ast-ksh package
Author: gsf+dgk+kpv
Keywords: software, package

### ast-ksh package The AT&T Software Technology ast-ksh package from AT&T Research contains ksh and support libraries. This is the minimal set of components needed to build ksh. Components in this package:
ksh93 | libast | libcmd | libcoshell | libdll | libsum
This package is a superset of the following package: ksh; you won't need this if you download ast-ksh. The software is covered by this license: http://www.eclipse.org/org/documents/epl-v10.html Individual components may be covered by separate licenses; refer to the component source and/or binaries for more information. A recent release change log is also included. ### ksh93 KSH-93 is the most recent version of the KornShell Language described in "The KornShell Command and Programming Language," by Morris Bolsky and David Korn of AT&T Bell Laboratories, ISBN 0-13-182700-6. The KornShell is a shell programming language, which is upward compatible with "sh" (the Bourne Shell), and is intended to conform to the IEEE P1003.2/ISO 9945.2 Shell and Utilities standard. KSH-93 provides an enhanced programming environment in addition to the major command-entry features of the BSD shell "csh". With KSH-93, medium-sized programming tasks can be performed at shell-level without a significant loss in performance. In addition, "sh" scripts can be run on KSH-93 without modification. The code should conform to the IEEE POSIX 1003.1 standard and to the proposed ANSI-C standard so that it should be portable to all such systems. Like the previous version, KSH-88, it is designed to accept eight bit character sets transparently, thereby making it internationally compatible. It can support multi-byte characters sets with some characteristics of the character set given at run time. KSH-93 provides the following features, many of which were also inherent in KSH-88: Enhanced Command Re-entry Capability: The KSH-93 history function records commands entered at any shell level and stores them, up to a user-specified limit, even after you log off. This allows you to re-enter long commands with a few keystrokes - even those commands you entered yesterday. The history file allows for eight bit characters in commands and supports essentially unlimited size histories. In-line Editing: In "sh", the only way to fix mistyped commands is to backspace or retype the line. KSH-93 allows you to edit a command line using a choice of EMACS-TC or "vi" functions. You can use the in-line editors to complete filenames as you type them. You may also use this editing feature when entering command lines from your history file. A user can capture keystrokes and rebind keys to customize the editing interface. Extended I/O Capabilities: KSH-93 provides several I/O capabilities not available in "sh", including the ability to: specify a file descriptor for input and output start up and run co-processes produce a prompt at the terminal before a read easily format and interpret responses to a menu echo lines exactly as output without escape processing format output using printf formats. read and echo lines ending in "\". Improved performance: KSH-93 executes many scripts faster than the System V Bourne shell. A major reason for this is that many of the standard utilities are built-in. To reduce the time to initiate a command, KSH-93 allows commands to be added as built-ins at run time on systems that support dynamic loading such as System V Release 4. Arithmetic: KSH-93 allows you to do integer arithmetic in any base from two to sixty-four. You can also do double precision floating point arithmetic. Almost the complete set of C language operators are available with the same syntax and precedence. Arithmetic expressions can be used to as an argument expansion or as a separate command. In addition there is an arithmetic for command that works like the for statement in C. Arrays: KSH-93 supports both indexed and associative arrays. The subscript for an indexed array is an arithmetic expression, whereas, the subscript for an associative array is a string. Shell Functions and Aliases: Two mechanisms - functions and aliases - can be used to assign a user-selected identifier to an existing command or shell script. Functions allow local variables and provide scoping for exception handling. Functions can be searched for and loaded on first reference the way scripts are. Substring Capabilities: KSH-93 allows you to create a substring of any given string either by specifying the starting offset and length, or by stripping off leading or trailing substrings during parameter substitution. You can also specify attributes, such as upper and lower case, field width, and justification to shell variables. More pattern matching capabilities: KSH-93 allows you to specify extended regular expressions for file and string matches. KSH-93 uses a hierarchal name space for variables. Compound variables can be defined and variables can be passed by reference. In addition, each variable can have one or more disciplines associated with it to intercept assignments and references. Improved debugging: KSH-93 can generate line numbers on execution traces. Also, I/O redirections are now traced. There is a DEBUG trap that gets evaluated before each command so that errors can be localized. Job Control: On systems that support job control, including System V Release 4, KSH-93 provides a job-control mechanism almost identical to that of the BSD "csh", version 4.1. This feature allows you to stop and restart programs, and to move programs between the foreground and the background. Added security: KSH-93 can execute scripts which do not have read permission and scripts which have the setuid and/or setgid set when invoked by name, rather than as an argument to the shell. It is possible to log or control the execution of setuid and/or setgid scripts. The noclobber option prevents you from accidentally erasing a file by redirecting to an existing file. KSH-93 can be extended by adding built-in commands at run time. In addition, KSH-93 can be used as a library that can be embedded into an application to allow scripting. Documentation for KSH-93 consists of an "Introduction to KSH-93", "Compatibility with the Bourne Shell" and a manual page and a README file. In addition, the "New KornShell Command and Programming Language," book is available from Prentice Hall. ### release change log
    All recorded changes follow.
### ksh93 changes
    12-08-01  --- Release ksh93u+ ---
    12-08-01  A bug that ignored interrupts for some builtins (e.g. cmdtst::grep)
    	  that read from stdin has been fixed.
    12-08-01  A bug that interpreted "cd .foo" as "cd foo" has been fixed.
    12-07-30  Added automatic restart for EINTR for ioctl, tcgetattr, and tcsetattr.
    12-07-23  A scoping error with namrefs to compound associative arrays has
    	  been fixed.
    12-07-20  A bug where builtin -d /path/foo deleted foo has been fixed.
    12-07-18  A bug in which /dev/stdout did not work in command substitution on
    	  some systems has been fixed.
    12-07-17  A bug in which the restricted option set in a subshell prevented
    	  some variables from getting restored when the subshell completed
    	  has been fixed.
    12-07-09  A bug in which the directory is not restored after a subshell changes
    	  the name of the directory for subshells executed in the same process
    	  has been fixed.
    12-07-09  A bug in which file descriptors created with {n}< file were not being
    	  closed has been fixed.
    12-07-09  The 12-04-04 fix for cd .. was not correct causing cd /etc;cd .. to
    	  remain in /etc.  This has been fixed.
    12-07-02  A bug in which builtin name did now work for builtins found in a
    	  library added by builtin -f lib has been fixed.
    12-07-02  A bug in the edit modes which <tab> after a directory did not refresh
              the input line has been fixed.
    12-07-02  A bug in which an exit status > 256 corresponding to a signal was
              not returned by a function to indicate a signal exit has been fixed.
    12-06-28  Fix ulimit -a to list (Kibytes) instead of (kbytes).
    12-06-27  Fix unitialized data reference for <CR> as first char in --vi mode.
    12-06-26  The formatting of printf "%q" for multibyte locales has changed to
    	  output using \u[xxx] format for valid wide characters.
    12-06-25  The size limit for read -N and read -n has been raised to INT_MAX.
    12-06-22  A bug in which an exit trap set in a subshell might not be triggered
    	  when the last command was a simple executable has been fixed.
    12-06-22  A bug which could cause the shell to hang when a coprocess exits
    	  while a command inside a command substitution is reading from it has
    	  been fixed.
    12-06-21 +ksh new accepts for commands of the form for i; <nl> do;...;done
    12-06-19  Tab completion after a / when there is only one match not completes
    	  with that match rather than generating a menu of matches.
    12-06-19  A bug in which patterns containing {...} where not processed
    	  correctly inside ${var/pattern/string} has been fixed.
    12-06-18  Code modified to eliminate fts_notify variable.
    12-06-15  Change the .paths plugin/builtin library variable name from
    	  BUILTIN_LIB to PLUGIN_LIB to prevent new plugin_version() aware
    	  -lcmd from causing older non-plugin_version() aware ksh to dump core.
    12-06-14  builtin without argument no longer lists .sh.tilde as a built-in.
    12-06-12  For assignments if the form x=(foo bar), foo is only check for an
    	  alias if it is float, integer, compound, or nameref.
    12-06-12 +The shell supports 64 bit i-nodes even for 32 bit binaries.
    12-06-11  A bug wth >; redirection systems for which vfork() was the same a
    	  fork() has been fixed.
    12-06-11  A bug in path lookup that ignored buffer boundaries has been fixed.
    12-06-08  typeset -a var and typeset -A var, first unset var when var is
    	  a compound variable.
    12-06-08  A bug in which running shcomp on a program containg namespace
    	  could core dump has been fixed.
    12-06-06  A bug in which unset of an associative array of compound variables
    	  did not completely unset the variable has been fixed.
    12-06-06  A bug in which exporting left or right justfied fields could loose
    	  the field width has been fixed.
    12-06-06  A bug on Solaris11 in which >; did not work for /dev/null was fixed.
    12-06-05  A race condition which occured when stopping a builtin command
    	  invoked from a subshell has been fixed.
    12-06-05  A bug with appending elements to an empty indexed array has been
    	  fixed.
    12-06-04  A bug in which continuing a stopped builtin could cause it to
    	  terminate has been fixed.
    12-06-04  By default, builtins added at runtime will restore the current
    	  directory if they are killed or stopped.
    12-06-04  A bug in handling \ in read has been fixed.
    12-05-31  Use getrlimit64/setrlimit64 on systems that support it.
    12-05-31  Fix 64 bit big-endian arithmentic bug that mishandled nan and inf.
    12-05-31  Handle ECONNRESET like EPIPE.
    12-05-31  Change .paths parse to use only the last BUILTIN_LIB from the top
    	  and treat BUILTIN_LIB value as a ':' separated list of lib names.
    12-05-29  Fix BUILTIN_LIB binding bug that ignored subsequent lookups.
    12-05-29  shtests: --nocompile omits the compile test and --compile does only
    	  the compile test.
    12-05-25  A command subsitution containing a here-document that itself contains
    	  a here-document no longer hangs.
    12-05-24  When the redirection operatory >; is directed to a symlink, it now
    	  overwrites the file named by the link rather than the link.
    12-05-21 +Added printf formats %(type)q where type can be html, url, pattern,
    	  ere, or csv.
    12-05-18  A bug with appending elements to an indexed array has been fixed.
    12-05-18  The exit status from getopts --man interactively was 0 instead of 2
    	  and has been fixed.
    12-05-18  Another bug with SHOPT_EDPREDICT which could cause a core dump has
    	  been fixed.
    12-05-17  A bug with fixed size arrays which could cause a core dump has been
    	  fixed.
    12-05-17  A bug in which the here-document <<< $(<file) was not processed
    	  correctly has been fixed.
    12-05-15  The default value for -L, -R, and -Z when the size was not set was
    	  incorrectly defaulting to 1 and has been fixed.
    12-05-15  A bug in which a subshell of the form (name=value exec ...) could
    	  coredump when name is an environment variable and xtrace is on has
    	  been fixed.
    12-05-15  Fixed a .paths bug in which only the first BUILTIN_LIB assignment worked.
    12-05-14  Arithmetic expressions and subexpressions that are not floating point
    	  now treat -0 as 0, so that $((-0)) is 0 and $((-0.0)) is -0.
    12-05-11  'unset .sh' now fails with readonly message instead of coredump.
    12-05-11  A bug which left an associative array arr containing one element in
    	  the wrong state after expanding with ${arr[@]} has been fixed.
    12-05-10  A bug in which typeset -f did not display options that called getopts
    	  has been fixed.
    12-05-08  Fixed a number of potential bugs uncovered by valgrind.
    12-05-08  A bug in which typeset -b -Z10 var did not initialize var to the
    	  empty string has been fixed.
    12-05-07  A bug in which the exit value of an interactive shell could be
    	  affected by the evaluation of the PS1 prompt has been fixed.
    12-05-04  A bug in which x=() was not unsetting the old value of x before
    	  creating an empty compound variable has been fixed.
    12-05-01  A bug in vi edit mode in which after <ESC>^V, the terminal was not
    	  restored to insert mode after a character is entered has been fixed.
    12-04-27  A bug in which old attributes were not cleared when assigning a
    	  value using typeset has been fixed.
    12-04-26 +Enabled multiline editing by default.  set +o multiline can disable.
    12-04-25  The 12-04-17 PATH fix created a new bug which was fixed.
    12-04-25  Fixed a big memory leak problem in which unsetting compound variables
    	  did not free all the space.
    12-04-25  A bug in which test ! ! ! was treated as an error has been fixed.
    12-04-24  A bug with print -v for a compound variable that contained fixed
    	  arrays which prevented the output from being used again as input
    	  has been fixed.
    12-04-23 +kill provides the STKFLT signal on systems that support it.
    12-04-23 +The -L option was added to kill.  The -L option is the same as -l
    	  except that without arguments the output format is in the form of
    	  a select menu.
    12-04-23  A bug in which the exit status for an interactive shell was always
    	  0 has been fixed.
    12-04-20  Entering blank lines interactively no longer resets the exit status.
    12-04-18  A bug in file completion in which the second tab completion on a file
    	  would list the completion rather than inserting the completion has
    	  been fixed.
    12-04-18  A bug in which "${arr[@]:i:j}" and "${@:i:j}" generated the empty
    	  string when i was a valid subscript and j was <=0 rather than
    	  generating nothing has been fixed.
    12-04-17  A bug in which read -d delim from a terminal did not respond to
    	  interrupt and did not termrinate when the delimiter was entered
    	  has been fixed.
    12-04-17  A bug in which a directory in PATH containing a .paths file that
    	  contains a line with FPATH=dir, where dir does not exist could
    	  cause the path search to fail has been fixed.
    12-04-16  A bug in which $(trap -p) did not display traps such as ERR and
    	  DEBUG that are not associated with signals has been fixed.
    12-04-11  A bug in which unsetting a variable did not unset attributes when
    	  the variable did not have a value has been fixed.
    12-04-11  A bug in which read -A for an array whose index is an enumeration
    	  type, lost the enumeration type has been fixed.
    12-04-10  Shared libraries loaded from a library named by a BUILTIN_LIB= found
    	  in a .paths file found in a directory on PATH now add builtins that
    	  are associated with the directory in PATH containing the .paths file.
    12-04-09  Increased I/O buffer sizes for better performance.
    12-04-09  A bug in which the leading 0 was stripped from $x, when $x contained
    	  a heximadecimal constant inside an arithmetic expression inside
    	  a for or while loop.
    12-04-06  Modified namespaces to hand variabes FPATH, PATH, and OPTIND that
    	  are defined in name spaces appropriately.  This also fixed OPTIND
    	  and OPTARG processing for functions.
    12-04-04  A bug in which cd .. fails when the current directory has been
    	  renamed has been fixed.
    12-04-02  Made some namespace changes and added a regression test.
    12-03-30  A bug with namespaces in which PATH and FPATH set in a namespace was
    	  not restored when leaving the namespace has been fixed.
    12-03-29  A bug in which appending an index array onto an array without elements
    	  caused the first element to be 1 rather than 0 has been fixed.
    12-03-29  A bug which could cause a core dump when copying a large index array
    	  has been fixed.
    12-03-28  The shell now generates an error message when the sizes with L, Z, and
    	  R are > 32767 on 32 bit binaries instead of generating a core dump.
    12-03-28  A bug in left and right justification in which the width of invalid
    	  characters was not taken as zero has been fixed.
    12-03-26  A bug in which typeset -p ref, when ref is a reference to an index
    	  array element did not display the subscript has been fixed.
    12-03-23  A bug in lowercase and uppercase fields when expanding ${name:=val}
    	  when name is the empty string has been fixed.
    12-03-22  A namespace bug in which a type t defined in namespace foo could not
    	  be referenced outside the namespace as .foo.t has been fixed.
    12-03-22  A bug in name reference scoping in which a name function called from
    	  another function is pass a name reference to a compound variable
    	  instance to be created and the compound variable is in the global
    	  scope.
    12-03-22  A bug in which ${ref[@}} did not behave like ${arr[i][@]} when
    	  ref is a name reference to arr[i] has been fixed.
    12-03-21  A bug in which assigning a compound variable into arr[i], where
    	  arr[i] is an array variable did not work correctly has been fixed.
    12-03-21  A bug with multi-dimenstional index arrays in which ${arr[i][j]}
    	  could generate a bogus error message when i was > 9 has been fixed.
    12-03-21  A bug in which typeset v=foo, typeset -p v[0] generated a core dump
    	  has been fixed.
    12-03-20  A bug in vi edit mode in which the sequence bar<ESC>0i<ESC>l left the
    	  cursor on the b rather than the a has been fixed.
    12-03-20  A bug which caused a core dump when defining a type with a field
    	  as ' integer -a data=([0]=0)' has been fixed.
    12-03-19  Using typeset -a array when array is an associative arry not
    	  generated an error message.
    12-03-19  typeset +a, typeset +A, and typeset +C not displays the variables
    	  with the attributes a, A, and C respectively instead of an error.
    12-03-19  A bug in which typeset -pC, typeset -pa, and typeset -pA output all
    	  variables rather than those of type C, a, or A only has been fixed.
    12-03-18  A bug in which unset foo where foo is a name reference to a compound
    	  variable defined inside a function is not unset has been fixed.
    12-03-18  A bug with SHOPT_EDPREDICT which could cause a core dump when the
    	  list of matches became empty has been fixed.
    12-03-15  The assignment, typeset -C foo=(a b c) now generates a syntax
    	  error since a is not an assignment command.
    12-03-16  A bug in which an unset discipline from a variable defined in a
    	  subshell is not invoked in the subshell has been fixed.
    12-03-08  The assignment typeset -a (x=1 y=2) now creates an index array
    	  of two elements rathern than an array of one element which is
    	  a compound variable.
    12-03-02 +The vi and emacs edit modes now list all the entries in a directory
    	  when entering a <tab> for completion after a /.
    12-03-02  A bug in which a program that exits with value 12 when called
    	  from a command substitution in which standard output has been
    	  redirected caused the shell to hang has been fixed.
    12-03-01  A bug in which the shell could not parse [[ ']' == ~(E)[]] ]]
    	  has been fixed.

    12-02-29  --- Release ksh93u+ ---
    12-02-29  A bug in which ~user expanded first in a subshell prevented it
    	  from expanding later in a program has been fixed.
    12-02-29  A bug which could lead to a core dump when more that four shared
    	  libraries were added with the builtin command has been fixed.
    12-02-29  Fixed a few bugs which caused SIGCHLD to be blocked preventing
    	  background jobs from being reaped until a foreground job was run.
    12-02-27  A bug in which sh -c for a simple command caused a fork() has been
    	  fixed.
    12-02-27  A timing bug on systems such as AIX that doesn't support vfork()
    	  that could cause the exist status to get lost has been fixed.
    12-02-22  A private file descriptor that was not close-on-exec for a command
    	  substitution and has been fixed.
    12-02-14  A bug in which ^Z did not stop a pipeline when the last component
    	  was a shell built-in has been fixed.
    12-02-14  getconf("PATH") used to initialize ed(1) path.
    12-02-13 +In earlier version read from standard input would fail when called
    	  from the KEYBD trap.  Now read options -N, -n, and -t should work
    	  when called from a KEYBD trap.
    12-02-13  If FCEDIT is not set and fc is invoked without the -e option,
    	  ed will be invoked if found instead of /bin/ed.
    12-02-10  Another bug in the saving and restoring of IFS in a subshell
    	  that caused a core dump has been fixed.
    12-02-08  A bug in which .sh.fun disciplines could be cleared after a
    	  function completes has been fixed.
    12-02-08  A bug in job control in which the foregroup process group was not
    	  set correctly after restarting a stopped pipeline has been fixed.
    12-02-07  A bug in which numbers with leading zeros could be treated as
    	  octal constants outside of ((...)) has been fixed.
    12-02-06  A bug in arithmetic with compound variables containing multiple
    	  array elements has been fixed.
    12-02-02  A bug in the ulimit option table was fixed.
    12-01-26  A bug in which a set command that did not change monitor could
    	  effect the behavior of the monitor when monitor mode is on is fixed.
    12-01-21 +You can now test whether the shell implements a math function using
    	  typeset -f .sh.math.name, where name is the name of the function.
    12-01-21  A bug in which typeset -L and typeset -R did not handle multibyte
    	  characters correctly has been fixed.
    12-01-20  A bug that could cause the shell to hang waiting for an incorrect
    	  job pid has been fixed.
    12-01-19  A memory leak which occured for a nested command subtiution has been
    	  fixed.
    12-01-17  A bug in which typeset -u PS1 could enable the uppercase attribute
    	  for some other variables, for exampe, HISTFILE has been fixed.
    12-01-16  A bug in which .sh.match was not correct after a substring match when
    	  the replacement string contained a substring match has been fixed.
    12-01-12 +Files that are sourced from profile files are now read and executed
    	  one command at a time so that alias definitions take effect as they
    	  do for profile files.
    12-01-12  A bug in which whence -p would find a function if one existed and
    	  there was no command of that name on PATH.
    12-01-11  Change b_* prototype (int, char**, void*) => (int, char**, Shbltin_t*).
    12-01-05  A bug in which read was not terminating for a signal that had a trap
    	  set has been fixed.
    12-01-01  A timing problem with >; has been fixed.
    12-01-01  A macro expansion memory leak has been fixed.
    11-12-26  A bug in array assignments of the form arr=( $arr[i] ...) in which
    	  arr was not unset before the assignment has been fixed.
    11-12-20  A number of code changes were made based on the results of errors
    	  indicated by static code analysis.
    11-12-13  In vi edit mode a lteral <TAB> can now be entered by preceding it
    	  with a backshash.
    11-12-13  When tab is entered for completion after a ' or ", the ' and "
    	  characters are no longer deleted.
    11-12-07  A bug in which a program in the current direcotry with a . in the
    	  name could fail to execute when both PATH and FPATH end with :. has
    	  been fixed.
    11-12-07  I fixed a bug in which a variable expansion in a large here-document
    	  could be expanded to a null string.
    11-12-06  An optimization to read was added in the case the the read command
    	  was redirected from a file.
    11-12-06  Changes were made to make the line limit for read unlimited by
    	  default.
    11-12-05  A bug in which unsetting an array variable did not completely clear
    	  the variable in some cases has been fixed.
    11-12-02 +The printf alternative character # when applied to the %q format will
    	  quote argument in a form suitable for a field in a .csv format file.
    11-12-02 +A -S option was added to read to be able to read .csv format files.
    11-11-28  A bug in which redirection of standard error in a function called from
    	  command substitution caused standard error to be lost has ben fixed.
    11-11-21  [[ (-n foo) ]] no longer requires a space before (.
    11-11-11  The readonly attribute for a variable now applies to compound
    	  assignments to that variable.
    11-11-07  Changes were made to reduce the stack size to allow deeper function
    	  recursion.
    11-10-10 +Added alternate flag to printf %H for encoding of URI's.
    11-10-10  A bug which could lead to a core dump when the shell was invoked
    	  with more than twenty five open files has been fixed.
    11-10-06  A bug in the scoping of name references in functions called by other
    	  functions has been fixed.
    11-10-05  A bug in which wait on a pid may return the exit status of an
    	  earlier background job with that pid instead has been fixed.
    11-09-22  A bug in which a read timed out with TMOUT did not always restore
    	  the terminal state has been fixed.
    11-09-21  An optimization that allowed the last command in a script to use
    	  the same process id as the script has been eliminated.
    11-09-21  Added letoctal option that enables the let command to recognize
    	  octal constants starting with 0.
    11-09-20  A bug in which ${var.} could cause a core dump has been fixed.
    11-09-20  A bug with SHOPT_EDPREDICT when neither vi or emacs was enabled for
    	  lines beginning with # when in a multibyte locale has been fixed.
    11-09-20  A bug in emacs edit mode with SHOPT_EDPREDICT that would cause
    	  history searches matching comments lines to generate predictions
    	  has been fixed.  Only user typed comment lines generate predictions.
    11-09-20  A bug in emacs edit mode with a search that matches a comment line
    	  that could cause a core dump has been fixed.
    11-09-16  A bug in which a command name ending in .. could cause the shell to
    	  abort has been fixed.
    11-09-16  The characters ! + - % and @ in file names are no longer escaped with
    	  file name completion.
    11-09-13  The let command no longer treats numbers starting with 0 as octal
    	  constants.
    11-09-08  A bug in which printf "%R" could cause a core dump for invalid shell
    	  patterns has been fixed.
    11-08-09  With set -u, ${var#pattern} reported that var was unset for special
    	  variables.
    11-08-03  A bug in which the shell did not preserve the exit status for a
    	  coprocess has been fixed.
    11-08-02  A bug in the saving and restoring of IFS in command substitution that
    	  caused a core dump has been fixed.
    11-07-21  Modified the 10-08-27 bug fix so that background jobs started in for
    	  and while loops created interactively generate completion messages.
    11-07-20  I fixed a bug in here documents in which multi-byte characters that
    	  crossed buffer boundaries were not processed correctly.
    11-06-22  The shell compiler now supports process substitution.
    11-06-22 +Added code to support process substitution on systems that do
    	  not supply the /dev/fd directory.
    11-06-21  Fixed extraneous jobs Done messages when builtin is at the end of a
    	  pipeline.
    11-06-20  Fixed two regression tests.
    11-06-20  Fixed a bug introduced on last update.
    11-06-14  A bug with pipefail in which the shell would wait for background
    	  jobs to complete has been fixed.
    11-06-09  A bug which caused the options.sh regression test to fail on OS390
    	  Linux has been fixed.  The bug could also have affected other systems.
    11-06-07 +A number of changes to support the still undocuments namespace option
    	  have been added.
    11-06-06  A bug in which command substitution of eval would hang when it  had
    	  standard error redirected to standard output has been fixed.
    11-06-01  A bug in case statement fall through (;&) ignoring set -e was fixed.
    11-06-01  A bug in which creating a left or right justified upper or lowercase
              variable with an empty string has been fixed.
    11-06-01  A bug in which the .paths directory wasn't read when a subshell was
    	  executed before any other command has been fixed.
    11-05-31  The shell now gives an error when a type variable is assigned to
    	  an array instance when the array has been declared a compound variable
    	  array.
    11-05-31  A bug in which typeset -m of an array instance did not remove the
    	  original instance has been fixed.
    11-05-28  A bug in which typeset -m dest=src fails when src and are passed as
    	  name references was fixed.
    11-05-28  A bug in which typeset -m "c.board[1][i]=el", where el is a compound
    	  variable core dumps has been fixed.
    11-05-28  Two bugs in the display of arrays of compound variables with print -v
    	  have been fixed.
    11-05-27  A bug with command substitution with the shift jis locale has been
    	  fixed.
    11-05-25  A bug in which unset -f foo, called within function foo could cause
    	  the shell to core dump has been fixed.
    11-05-24  A bug in unsetting arrays of compound variables that could lead to
    	  a core dump has been fixed.
    11-05-24  A scoping bug in with typeset -m for variables passed as references
    	  has been fixed.
    11-05-09  A bug in which 'typeset +p array[$i]' in a subshell could cause an
    	  exception has been fixed.
    11-05-03  Two more scoping bugs with name references and read -C were fixed.
    11-05-03  A potential race condition which occurs when here-documents are
    	  processed in asynchronous blocks has been eliminated.
    11-05-02  Another scoping bug with name references defined in a function has
    	  been fixed.
    11-05-02  A bug in which the shell discards saved exit status of a job if it is
    	  followed by a subshell execution has been fixed.
    11-04-28  The shell now checks for numerical overflows with process ids.
    11-04-28  Another scoping bug with compound variables defined by name references
    	  inside a function has been fixed.
    11-04-28  A bug which caused a core dump on 32 bit systems with the basic.sh
    	  regression test has been fixed.
    11-04-27  A scope binding error for name references has been fixed.
    11-04-27  Assignment of compound variable to compound array element by name
    	  is now working.
    11-04-26  I fixed a bug with SHOPT_FIXEDARRAY compilation that could cause
    	  an a core dump for not fixed arrays.
    11-04-25  A bug in the references to two dimensional compound arrays has
    	  been fixed.
    11-04-20  A bug in which a name reference to a multidimentional index array
    	  index, nameref x=foo[3][4], did not work correctly has been fixed.
    11-04-18  Changes were added to allow fixed size arrays of variable sized
    	  objects when the SHOPT_FIXEDARRAY compile option defined on 10-09-28.
    11-04-18  A bug in which name references to array elements could fail has
    	  been fixed.
    11-04-15 +A compile option, SHOPT_2DMATCH, has been added which causes
    	  .sh.match to be a two dimensional array after ${var//pat/str}
    	  where the first dimension is the pattern number and the second is
    	  the match instance.
    11-04-11  A bug in which readonly var, where var is exported could cause var
    	  to be unset has been fixed.
    11-04-06  A tokenizer bug in which ${x/{3}(\d)/ } would cause in infinite
    	  loop has been fixed.
    11-04-05  A bug in which ${!x.} could cause a core dump has been fixed.
    11-04-04  A bug in which cleaning out the history file could terminate before
    	  keeping all the recent history events has been fixed.
    11-03-29  A bug in which ${#array[@]} was 1 rather than 0 after issuing
    	  typeset array[7] has been fixed.
    11-03-29  The subscript out or range message for fixed arrays has been fixed.
    11-03-29  A bug in which suspend could cause a core dump has been fixed.
    11-03-24  For the showme option added 09-09-09, commands beginning with a ;
    	  inside an arithmetic for loop, no longer produce syntax errors.
    11-03-18  A bug in _WINIX ~domain/user expansion has been fixed.
    11-03-16  A bug in the pipefail option which could cause a script to hang
    	  has been fixed.
    11-03-12  The shell no longer treats ${##pattern} as a syntax error.
    11-03-11  A bug in typeset -u on systems that don't supply the towctrans()
    	  function has been fixed.
    11-03-11  A bug in which a compound assignment of the form var[sub]=(...)
    	  would evaluate sub for each assignment has been fixed.
    11-03-07  A bug in which reassigning a compound variable to an associative
    	  array index could incorrectly increase the count of the number
    	  of elements has been fixed.
    11-03-04 +The tilde expansion on windows has been modified to handle user
    	  names of the form domain/user so that ~domain/user now expands
    	  to the home directory of that domain user.
    11-03-03  A bug in which the width of the prompt was calculated incorectly
    	  which cause the wrong line length for edit commands has been fixed.
    11-03-02  A bug in which a global variables set from within a function inside
    	  a subshell can leave side effects in parent shell has been fixed.
    11-03-01  A bug in which whence -a could dump core when the first match
    	  was due to : in PATH and the program was in the current directory.
    11-02-28  A bug in emacs mode with SHOPT_EDPREDICT (added on 10-05-20) which
    	  disabled prediction on a line starting with # when the cursor was not
    	  at the end of line has been fixed.
    11-02-28  The output format for compound variables with set has been fixed.
    11-02-25  A bug which could lead to a core dump occurred when a shell script
    	  without #! is invoked by name from a parent shell that has name
    	  references defined and the script creates name references of the
    	  same name.
    11-02-21  The shell now fails with a syntax error when a here-document in a
    	  command substition is not completed before the closing ), for
    	  example, $( foobar <<! )
    		here_doc
    	  !.
    11-02-18  A bug in which the value of $0 in a function defined by name()
    	  was changed to name has been fixed.
    11-02-17  A bug in which the declaration typeset var[100] did not work
    	  correctly has been fixed.
    11-02-15  A bug in which [[ -v sh.match ]] did not work correctly has been
    	  fixed.

    11-02-08  --- Release ksh93u  ---
    11-02-08  A bug in which opening standard output after it has been closed with
    	  exec 1>&- doesn't work has been fixed.
    11-02-07  A bug on some systems for which a command subtitution could hang
    	  has been fixed.
    11-01-28  A bug in file name completion for files containing both multibyte
    	  characters shell special characters has been fixed.
    11-01-18  The .sh.match variable now shows elements that do not match as
    	  as not set rather than an empty string.
    11-01-18  A bug with typeset -m of an array into an element of an indexed
    	  array has been fixed.
    11-01-13  A bug in handling of arrays of compound variables inside ((...)) which
    	  reported a syntax error been fixed.
    11-01-10  A bug in arithmetic assignment operators of the form op= for array
    	  variables when the same array was referenced on the left and the
    	  right hand side with different indices has been fixed.
    11-01-10  A bug in which the output of time was lost when { time...;} 2>&1
    	  occurred inside command substition has been fixed.
    11-01-07  [[ -v sh.match[i] ]] was returning false when sh.match[i] was set.
    11-01-05  Added and modified warning messages with sh -n.
    11-01-02  Fixed bugs with typeset -l/-u/-M and arrays.
    10-12-28  Fixed a bug with typeset -l/-u/-M values in arithmetic expressions.
    10-12-26  Fixed a time parsing bug in sleep and localeconv() initialization.
    10-12-23  Prevented the shell from generating a core dump when it sends itself
    	  a termination signal because the last command terminated with that
    	  signal.  This prevents a core dump to be overwritten by the shell.
    10-12-22  A bug in the expansion of  ${A[@]} ${B[@]}, introduced in 10-12-01
    	   when A="" B=B has been fixed.
    10-12-21 +Use MS_3D in b_vpath() for setting win32 WoW mount defaults.
    10-12-17  A bug in the expansion of ${var:i:j} which caused a core dump when
    	  i > ${#var} has been fixed.
    10-12-16 +sleep now treats . as decimal point even in locales that use comma.
    10-12-16 +typeset -M mapname was added to generalize on toupper and tolowwer
    	  mapping as provided with wctrans().
    10-12-10  A bug in which typeset -l displayed namespaces as well as lower case
    	  variables has been fixed.
    10-12-06  A bug in which a pipeline could terminate prematurely for a pipeline
    	  whose right hand side is a builtin, and whose left hand side ends in
    	  a simple command that has standard output redirected has been fixed.
    10-12-06  A bug in hexfloat assignments when the right hand side is a string
              variable starting with 0x has been fixed.
    10-12-01  A bug in the expansion of ${$1+"$@"} which causes the last positional
    	  parameter to disappear when it is empty has been fixed.
    10-12-01  A number of changes were made to reduce the startup time.
    10-11-29  When wait is interrupted by a signal that is caught, it now exits
    	  with a non-zero exit status.
    10-11-29  When a variable is used directly in an arithmetic expression,
    	  leading zeros no longer cause the value to be treated as an
    	  octal constant.  This was true in previous versions for justified
    	  variables.
    10-11-29  An incorrect warning message was eliminated with the -n option for
    	  arithmetic expressions with associative arrays.
    10-11-29  Some changes were made to slightly reduces startup time.
    10-11-24  A bug in which a name reference is make to arr[0] when arr is not
    	  an array has been fixed.
    10-11-23  If a type definition is made without a compound variable assignment it
    	  produces an error message and no longer shows up as a defined type.
    10-11-22  The handling of  inside [...] for for shell and ~(E) patterns has
    	  been fixed.
    10-11-22  A patch was made to pfsh to handle an error case.
    10-11-22 +Modified types defined in namespace so that they do not clash with
    	  types in other namespaces.  Types can be referenced using
    	  .namespace.typename.
    10-11-22  A bug which caused functions addressed as .namespace.funct to not
    	  work has been fixed.
    10-11-22  A bug in which if nr was a name reference to an unset associative
    	  array subscript, then ${!nr} did not output the subscript correctly
    	  has been fixed.
    10-11-18  A bug in which shcomp -n was not processing double quotes correctly
    	  has been fixed.
    10-11-18  Fixed a bug in which typeset -T foo; typeset -T could cause a
    	  core dump.
    10-11-17  Fixed a bug in which the error message for set -u could come out
    	  garbelled.
    10-11-17  Modified the parser so that typeset -a var=(...) no longer checks
    	  the first index for aliases and reserved words.
    10-11-17  A bug in which a subshell command consisted of only a for or until
    	  command has been fixed.
    10-11-16  Fixed a bug in which typeset -u would display namespace variables
    	  as well as upper case variables.
    10-11-16  A bug which could cause a core dump when unsetting a type variable
    	  when there are references to type elements has been fixed.
    10-11-15  A bug which could cause a core dump when unsetting a compound
    	  array variable when there are references to array subscripts has
    	  been fixed.
    10-11-15  A bug in which using typeset -m to move an indexed array instance
    	  to another array could cause the array to display incorrectly has
    	  been fixed.
    10-11-12  A bug in which the unset discipline function for a type is called
    	  when the type is initialized has been fixed.
    10-11-12  The sequences \< and \> are now preserved after patterns containing
    	  ~(E) in ${var/pattern/string} expansions.
    10-11-11  A bug in typeset -m when the variables were compound arrary instances
    	  has been fixed.
    10-11-10  A bug in output of a compound variable with types containing types
    	  has been fixed.
    10-11-10  Fixed ``name=value export [-p]'' to list environment.
    10-11-09  shtests resets SIGPIPE to SIG_DFL for all tests.
    10-11-09  Fixed a bug in expansion of $"..." when used in assignments.
    10-11-09  Fixed a getaddrinfo() memory leak that didn't call freeaddrinfo()
    	  after an interrupt.
    10-11-08  Modified the behavior of set -u so that the shell terminates with
    	  error message when when var is unset with ${!var} and ${#var}.
    10-11-02  Fix a bug in which a signal received while in a subshell could be
    	  ignored.
    10-10-26  Fix a bug where terminal interrupt was ignored while in vi/emacs
    	  edit search mode.
    10-10-26  Fix $'a b'c to expand to 'ac'.
    10-10-26  Provide user defined round() if not in <math.h>.
    10-10-26  Fix bug where $((undefined_function(1))) dumped core.
    10-10-22  Provide user defined iszero() if not in <math.h>.
    10-10-22  Fixed a bug with BGX compile option that could cause the shell to
    	  hang.
    10-10-22  Fixed a bug with user define math function on systems for which
    	  char is unsigned.
    10-10-21  A bug in which function autoloaded in a function leaves a file open
    	  has been fixed.
    10-10-20  Modified the behavior of set -u so that the shell terminates when
    	  when var is unset with ${var op string} when op is #, % or /.
    10-10-20  Fixed a bug with the AUDIT option in which the audit file was not
    	  not close-on-exec.
    10-10-20 +Made a number of changes and fixes for the NAMESPACE compile option
    	  which as added on 10-06-09 but some problems still remain.
    10-10-15  Fixed a bug in which arithmetic functions (added on 10-03-24) did
    	  not work when the function definition was in the same compound
    	  command in which the function was referenced.
    10-10-13  A bug in which creating an associative array of compound variables
    	  with no members as an element of a compound variable did not work
    	  has been fixed.
    10-10-08  A bug in which killing the last command in a function defined
    	  with function name, terminated the calling script has been fixed.
    10-10-08  A bug which could cause a core dump if IFS is unset inside a function
    	  has been fixed.
    10-10-07 +To reduce unwanted side effects, invoking typeset without the export
    	  option and without an assignment now causes the variables to be unset
    	  if the variable is inherited from the environment.
    10-10-06  The closing brace for ${ command } is now a token no matter what
    	  character follows it.
    10-10-04  The change for $'...' expansion on 10-08-09 did not expand parameters
    	  contained in the error message and this has been fixed.
    10-10-04  A bug in which a declaration of indexed array (-a_ in a type
    	  definition would be displayed as a compound indexed array (-C -a)
    	  has been fixed.
    10-09-30  The C99 math function ldexp has been added.
    10-09-30  A bug with two dimensional arrays with expansion of the form
    	  ${ref[0..5]} where ref is a nameref to array[i] has been fixed.
    10-09-29  A bug in which an eval with redirections invoked from a dot script
    	  would not restore the file has been fixed.
    10-09-29  A bug in which loading a function from FPATH could leave a file
    	  descriptor open has been fixed.
    10-09-28 +A new compile option SHOPT_FIXEDARRAY has been added and is being
    	  evaluation.  It allows fixed sized indexed arrays be to defined
    	  using "typeset array[dim1][dim2]...[dimn]".  Fixed sized arrays
    	  are used the same way indexed arrays are.  Currently, only fixed
    	  arrays of fixed objects (float, int, and justifies objects) are
    	  supported.
    10-09-22  A bug which could cause an exception when a function with static
    	  variables was redefined has been fixed.
    10-09-21  A bug in the processing of (command&) which created a job in the
    	  parent process has been fixed.
    10-09-21  A for loop optimization bug with arithmetic expression evaluation
    	  has been fixed.
    10-09-21  A bug in which a recursive function containing a pipeline could
    	  lead to an exception fixed after 8 levels of recursion has been
    	  fixed.
    10-09-18  A bug in which the count of elements in an array was wrong leading
    	  to an exception has been fixed.
    10-09-13  A bug which occurred when both xtrace and showme options where
    	  specified in which the xtrace option disabled showme has been fixed.
    10-09-13  A bug in which creating a reference to an array variable with any
    	  elements could cause subsequent array elements to be treated as
    	  compound variables has been fixed.
    10-09-09  A bug which caused ((c.ar[x][y])) to be treated as a syntax error
    	  has been fixed.
    10-09-08  A bug in the processing of references to multidimensional arrays
    	  in arithmetic expressions has been fixed.
    10-09-08  A bug in the handling of multi-dimensional arrays which caused
    	  the number of elements in each dimension to be incorrect has
    	  been fixed.
    10-09-07  The change for messages on 10-08-09 did not handle message in
    	  assignments and this has been fixed.
    10-09-07  A bug in the indentation of compound variables in arrays when
    	  output with print -v has been fixed.
    10-09-07  A rare bug with indexed arrays when assigned a null string that could
    	  cause a core dump has been fixed.
    10-09-03  A number of changes were made for jobs pools.
    10-08-31  typeset -p was modified to output name references after other
    	  variables so that the output could be used as input.
    10-08-31  A bug with typeset -p in which variables with attributes but
    	  without attributes were not displayed correctly has been fixed.
    10-08-27 +When running a subshell, the current pool is unset.
    10-08-27  A bug in which jobs started from within for or while lists in
    	  interactive shells could generate completion messages has been fixed.
    10-08-25  Fixed a couple of bugs related to job pools.
    10-08-24 +[[ -e /dev/xxx/ ]] can be used to check whether special files of
    	  those names are handled by the shell.
    10-08-24  A bug in the running of a compiled dot script in which only the
    	  first command was executed has been fixed.
    10-08-23  A bug which sometimes caused a core dump with a configure script
    	  has been fixed.
    10-08-20  A bug in command substitution which caused a configure script to
    	  hang has been fixed.
    10-08-19  Eliminated unnecessary ; from output of compound variable with
    	  typeset -p.
    10-08-17  Fixed a bug in command substitution in which under certain
    	  circumstances a file whose size is a power of 2 plus one, and the last
    	  character was not a new-line, could cause memory corruption.
    10-08-13 +Added static discipline functions to type similar to C++ static
    	  class functions.
    10-08-11  A bug in time when applied to a pipeline in which the shell did
    	  not wait for all elements of the pipeline to complete has been fixed.
    10-08-11  Restored sh_fmtq() quoting to not quote NAME= in NAME=VALUE.
    10-08-09 +Modified the expansion of message strings, $"...", so that they
    	  are expanded each time they are referenced rather than expanding
    	  them when the script is compiled or read in.
    10-08-06 +The process id for jobs in job pools is now of the form poolname.n
    	  where n is the jobid in that pool.  Commands that accept job names
    	  or numbers now understand names in this format.
    10-08-05  A bug in which an assignment from within an arithmetic expression
    	  inside a function would create a local variable has been fixed.
    10-08-04  A bug in the expanding of variables whose names contain multibyte
    	  characters has been fixed.
    10-08-04  A bug which caused an exception when processing scripts compiled
    	  with shcomp -n has been fixed.
    10-08-02  Tests using very small buffer sizes uncovered a number of bug most
    	  connected with here documents which have been fixed.
    10-07-27  The format modifier , used for digit grouping with d and f formats
    	  has been documented.
    10-07-26  cd '' now produces and error rather than changing to the current
    	  directory.
    10-07-26  A bug in multi-byte locales which the last character of a
    	  multi-byte character is a  or pattern character which could occur
    	  when the character was the last character of a command substitution
    	  has been fixed.
    10-07-23  Another bug in the processing of ${var:offset;len} in multi-byte
    	  locales when len is larger than the number of characters has been
    	  fixed.
    10-07-23  Many coding changes have been made to eliminate most of the uses
    	  of global variables in the shell code.
    10-07-22  Fixed a bug in which discipline functions were not being invoked
    	  when it was invoked as ref.discipline where ref was a name reference
    	  to an array instance.
    10-07-22  Fixed a bug in which discipline functions were not being invoked it
    	  was invoked on a two dimensional array, i.e., arr[5][9].discipline.
    10-07-19  Fixed a buffering problem which occurred when running a script with
    	  ssh and the parent ssh process is killed.
    10-07-14  Modified the parser to treat ((...)) inside [[...]] as ( (...) ) to
    	  that it is a nested (...).
    10-07-09  A bug in the handling of process substitution inside command
    	  substitution as part of a pipeline has been fixed.
    10-07-07  A bug in the output for compound variables containing
    	  multi-dimensional arrays has been fixed.
    10-07-06  ksh now recovers from changes made by bash to the history file without
    	  loosing history commands.
    10-06-25  A bug in which a large here document containing command substitutions
    	  of a dynamically loaded function that contained a here document
    	  could get truncated has been fixed.
    10-06-24  If after executing a script found in FPATH, if a function, builtin,
    	  or type name corresponding to that script is not defined, the shell
    	  now outputs an error message and returns value 126.
    10-06-23  Floating point functions that happened to return integer values
    	  were being treated as if the function returned integers so that
    	  integer division could be used instead of floating point division.
    10-06-22  Fixed a bug in earlier ksh93u in which an arithmetic assignment to a
    	  variable in the global scope would instead create a local variable if
    	  the variable had an attribute but did not have a value.
    10-06-18  Modified trap handling so that if the same signal is received when
    	  executing the handler, it is deferred until the handler completes.
    10-06-16  Fixed a bug in which ulimit -v was setting the the cpu limit
    	  on Linux.
    10-06-14 +The command 'typeset -T' now generates the list of type definitions
    	  in a format that can be used as input to the shell.
    10-06-09  Put in patch from Solaris for output quoting with %q.
    10-06-09 +Made changes to the NAMESPACE compile option so that it now seems
    	  to work.  With this option, namespace <name> { command;} will
    	  run command in the namespace .name so that all variables and
    	  functions created by command are accessible outside the name
    	  space via .name.var and .name.fun.  Variables and functions that
    	  are not in the namespace are not modified when running command.
    10-06-07  Change most internal interfaces to take Sh_t* argument.
    10-06-03 +Types can be loaded on first reference by putting definitions in
    	  PFPATH.
    10-06-03 +The shell is now able to parse commands which use type statements
    	  before the typeset -T command to define the type executes.
    10-06-03  A bug in the quoting for name reference declarations which did
    	  not properly handle [ and ] in subscripts for associative arrays.
    10-06-02  A bug in which a discipline function defined by a type instance to
    	  override the default was not being registered has been fixed.
    10-06-02  A bug in which read -C of an associative array of compound variables
    	  was not working has been fixed.
    10-06-02  A bug in which the error message for an unset parameter with set -u
    	  did not contain the name of the variable has been fixed.
    10-06-01  A bug in typeset -m for moving an indexed array instance to a variable
    	  has been fixed.
    10-06-01  A bug in which caused memory to be freed twice when unset was called
    	  for an indexed array that had get or set disciplines has been fixed.
    10-06-01  A bug in which the %b format of printf was not preserving NUL bytes
    	  with   has been fixed.
    10-06-01  A bug in the handling of name references to array variables in
    	  arithmetic expressions has been fixed.
    10-05-28  Fixed bugs in changing attributes for two dimensional arrays.
    10-05-28  Eliminated a few unreferenced variables and a reference to
    	  uninitialized memory.
    10-05-27  Rewrote the subshell code to avoid using pipes an many cases.
    10-05-24  Fixed a bug which cause an exception when both -l and -s were
    	  specified with typeset -i.
    10-05-21  Inputting of three dimensional indexed arrays with ( ( (...)...)...)
              was not working and has been fixed.
    10-05-21  A bug in which adding the attributes -Ai to a variable via a name
    	  reference could cause the value to display incorrectly has been fixed.
    10-05-21  A bug in which using $var inside ((...)) did not work when var was
    	  a hex float variable.
    10-05-20 +The compile option SHOPT_EDPREDICT has been added.  When this option
    	  is on, as you type a line beginning with a # the following characters
    	  are treated as a shell pattern and cause matching lines from the
    	  history file to be displayed as a numbered list as you type.
    	  You can scroll up and down this list or you can use <ESC>nTAB
    	  to make this the current line (n defaults to 1 of omitted) or
    	  <ESC>n<cr> to execute.
    10-05-20  A bug which caused an exception when multiple levels of composite
    	  functions in arithemtic expressions has been fixed.
    10-05-19  <<< with an empty string no longer gives an error.
    10-05-19  A bug in arithmetic evaluation when a name reference to an array
    	  instance was used has been fixed.
    10-05-14  A bug in which the shell treats a valid index array assignment,
    	  typeset -a x=(foo (x=3;y=4) bar) as a syntax error has been fixed.
    10-05-13  A bug in creating name references to associative array variable
    	  after a lookup of one of its elements has been fixed.
    10-05-12  Two bugs in the handling of function static type variables in
    	  subshells have been fixed.  One could cause an exception and the
    	  other would leave side effects in the parent shell.
    10-05-10  A bug in which static variables in functions were not being saved and
    	  restored properly when running subshells has been fixed.
    10-05-05  A bug in which print -v did not work correctly when an operand was an
    	  indexed array element referring to a compound variable has been fixed.
    10-05-05  A change to improve performance by special casing empty string
    	  assignments to avoid repeated malloc() and free().
    10-05-05  A bug in which creating a name reference to a non-existent associative
    	  array element would create the array element has been fixed.
    10-05-04  A bug in which name references to static variables in the static
    	  scope were not found has been fixed.
    10-04-30  Do not use socketpair() on systems that implement ioctl(I_PEEK)
    	  on pipes.
    10-04-29 +When the current job pool is set, coprocess are run in a job pool.
    10-04-28  A type defined with a member foo that is an associative array without
    	  elements followed by an expansion ${bar.foo[a]} and an assignment
    	  bar.foo[a]=b, no longer indicates that ${#bar.foo[@]} has 0 members.
    10-04-27  Another bug in which a nested command substitution could hang if it
    	  generated too much data has been fixed.
    10-04-26  A type defined with a member that is an indexed array without elements
    	  would behave as if the 0th element of each instance was defined after
    	  a non-zero element was specified and this has been fixed.
    10-04-26  A bug in which types defined in a subshell were not undefined when
    	  the subshell completed has been fixed.
    10-04-23  For file completion in commmand line editing, file names starting
    	  with # are now escaped so that they are not treated as comments.
    10-04-23  A bug in which ${t.var:=value}, where t is an instance of a type
    	  variable, could assign value to the type variable rather than to
    	  the type instance has been fixed.
    10-04-23 +Added &| which can be used in place of | to have portions of a
    	  pipeline executed in the pool.
    10-04-22 +The .sh.pool variable was added for use with job pools.
    10-04-22  A bug in which a nested command substitution could hang if it
    	  generated too much data has been fixed.
    10-04-20  A bug which corrupted one byte of memory when read was called with
    	  reads that did not use a delimiter has been fixed.
    10-04-19  The display of a compound variable with an embedded array with
    	  attributes was sometimes not working correctly and has been fixed.
    10-04-16  A bug in which attributes were not be propagated to elements in
    	  an associative array has been fixed.
    10-04-15  A bug which caused scripts containing user defined math functions to
    	  fail to compile with shcomp has been fixed.
    10-04-15 +Job pools have been added with the SHOPT_COSHELL compilation option.
    	  A job pool allows a collection of background jobs to run either locally
    	  or remotely and to be managed as a unit.  The command '& name ...'
    	  creates or uses a named job pool for subsequent background jobs.
    	  kill, wait, and jobs allow the pool name as operands.
    10-04-14  A bug in which a coprocess connection could terminate prematurely
    	  when running a nested subshell has been fixed.
    10-04-12 +Enumeration constants can be used in arithmetic expressions with the
    	  ==, != and = operators when the left hand side is an enum variable
    	  and the right hand side is an enumeration constant.
    10-04-07  A bug in which setting the trap on CHLD to ignore could cause
    	  an incorrect exit status has been fixed.
    10-04-06  A bug in which LINENO was not incremented for a here-document when
    	  the here-document word was followed by a comment has been fixed.
    10-04-06  The optimization that execs the last process of a script rather
    	  than creating a new process has been removed when a trap on
    	  interrupt has been set.
    10-04-06  Unsetting the 'C', 'A' or 'a' typeset attribute now produces an
    	  error message rather than generating an exception.
    10-04-06  A bug in which .sh.name contained the subscript and .sh.subscript
    	  was empty in some cases with discipline functions on array instances
    	  has been fixed.
    10-04-05  A bug in the edit modes where preceding the interrupt character with
    	  the literal next character did not work has been fixed.
    10-04-05  A bug in the creation of type instances of arrays which could cause
    	  an exception has been fixed.
    10-03-30  A bug in the display of a compound variable containing an indexed
    	  array of compound variables has been fixed.
    10-03-24 +Arithmetic functions can be defined using the shell function syntax,
    	  'function .sh.math.name x y z{...}' , where name is the function name
    	  invoked within ((...)) and x y z are long double arguments passed
    	  as name references.  y and z are used for functions with two and
    	  three arguments respectively.  The value of the function is the value
    	  of the long double .sh.value variable when the function returns.
    10-03-24  A bug in which integer division was mistakenly used when the
    	  numerator was a binary operator with the first operand floating
    	  point and the second integer, e.g. (.1**3)/3, has been fixed.
    10-03-24  The >; file operator was modified so that the temporary file is
    	  created in the same physical directory as file.
    10-03-23  A warning message was added to sh -n when $var was used inside
    	  ((...)) instead of var.
    10-03-19  fmin was added to the list of math function on the man page.
    10-03-19  Fixed the return value for unalias when the alias did not
    	  exist.
    10-03-19  A bug in which the SHLVL variable exported the value it had on
    	  input rather than the incremented value has been fixed.
    10-03-19  A bug which causes whence -q to go into an infinite loop has been
    	  fixed.
    10-03-19  Removed space between Stopped message and (SIGTTIN) and (SIGTTOUT).
    10-03-17  Modified profile shell execution so that when builtins that
    	  correspond to executable have extended attributes, they are
    	  executed by pfksh instead of being treated as built-ins.
    10-03-16  A bug in whence -a which produced duplicate lines of output has
    	  been fixed.
    10-03-16  A bug in the handling of process groups in monitor mode for
    	  command substitutions has been fixed.
    10-03-15  Fixed a bug in which read -u[fd] could cause the shell to core
    	  dump when fd was greater than open_max.
    10-03-15 +Modified the shell I/O so that the shell will not fail if the
    	  ulimit for open_max is increased as part of the script.
    10-03-12  A bug in which a here-document containing command substitutions
    	  that contained here-documents did not process correctly has been
    	  fixed.
    10-03-12  A bug in which the terminal is not restored to canonical mode
    	  after read times out when in a multibyte locale with no edit mode
    	  enabled has been fixed.

    10-03-05  --- Release ksh93t+  ---
    10-03-05  A variable unset memory leak has been fixed and tests/leaks.sh
    	  has been added to verify the fix.
    10-03-04  Documentation, comment, and diagnostic spelling typos corrected.
    10-02-14  Fix sh_getenv() initialization to cooperate with the 3d fs.
    10-02-12  A bug in which the get discipline function was not invoked for
    	  associative array subscripts for unset array elements has been fixed.
    10-02-12  A bug which could occur if the last line of a script was an eval
    	  that executed multiple commands has been fixed.
    10-02-02  A buffer overflow in read and another in binary type base64
    	  encoding were fixed.
    10-01-20  A bug in the evaluation of arithmetic expression in which the
    	  subscript was evaluated twice for $((foo[x++]++)) has been fixed.
    10-01-19  A workaround for a double-free of a trap in both a subshell and its
    	  parent has been added.
    10-01-18  A bug in type handling of typeset -H has been fixed.
    10-01-15  The "adding empty subscript" warning now only emitted with -x set.
    10-01-01  A bug in the parser in which '$((case i in i):;esac);:))' was not
    	  parsed correctly was fixed.
    10-01-01  A bug in the parser in which '$(( 2 , 3.6 ))' dumped core for locales
    	  with radix char , and thousands separator . has been fixed.
    09-12-28  A bug in the handling of SIGCLD on systems that generated SIGCLD
    	  while blocked waiting for process to complete has been fixed.
    09-12-24  ast setlocale() reworked to differentiate env var changes from user
    	  override.
    09-12-18  A bug with the SHOPT_BGX option set which disabled traps for signals
    	  < SIGCHLD when a trap for a signal > SIGCHLD was set has been fixed.
    09-12-18  A bug where [[ -v var ]] was incorrect for some variables (including
    	  LC_* vars) has been fixed.
    09-12-15  A bug that produced a syntax error when a multibyte character
    	  straddled a buffer boundary has been fixed.
    09-12-11  A bug where the subscript of an unset variable was not evaluated has
    	  been fixed.
    09-12-09  A bug where shcomp dumped core on certain syntax errors has been fixed.
    09-12-07  A bug where a parent shell environment var reset in a subshell removed
    	  the value in subsequent children of the parent shell has been fixed.
    09-12-04  A bug in which in some cases a trap in a function executed in
    	  a subshell could trigger twice has been fixed.
    09-12-03  A bug in which SHLVL exported with some attributes could cause
    	  the shell to abort at startup has been fixed.
    09-12-02  A bug with pipefail in which the shell could hang waiting for the
    	  writer to complete before the last reader command has been fixed.
    09-11-30  A bug in which a trap could be inherited by the first element of
    	  a pipeline when the command had more than 63 arguments that did
    	  not contain any macro expansions has been fixed.
    09-11-19  When read from a terminal was called from with a while or for loop,
    	  and an edit mode was on, a backspace or erase no longer will
    	  overwrite the prompt.
    09-11-17 +Change .paths parse to handle BUILTIN_LIB=foo BUILTIN_LIB=foo-1.2.
    09-11-17  Inside a function, typeset foo.bar will bind foo to global variable
    	  foo if local variable foo does not exist, instead of creating a
    	  local variable.
    09-11-17  "read -n1" from the terminal has been fixed to read exactly one character.
    09-11-11  Job control now works for subshell commands, (...).
    09-11-11  If set -e is on for an interactive shell errors in special builtins
    	  now cause the shell to exit.
    09-11-11  A bug in which an interrupt handler processed during the read builtin
    	  when IFS did not contain a new line has been fixed.
    09-11-09  A bug in which a variable that has been unset in a subshell and then
    	  exported from that subshell does not show up in the environment
    	  has been fixed.
    09-11-02  ``,2'' is now a valid numeric constant for locales with
    	  decimal_point=','.
    09-11-02  A bug where "return" in .profile did not restore the shell state
    	  has been fixed.
    09-10-31  A bug that corrupted saved exit status when pids wrapped around has
    	  been fixed.
    09-10-26  A bug in { LANG LC_ALL LC_category } ordering has been fixed in -last.
    09-10-16  A bug where notification to libast that the environment has changed
              has been fixed.
    09-10-12  A bug in which a function loaded in a subshell could leave side
    	  effects in the parent shell has been fixed.
    09-10-12  A bug in converting a printf %d operand to a number when the operand
    	  contains multiple subscripts for the same variable has been fixed.
    09-10-09  A bug in the handling of the escape character  in directory prefixes
    	  in command completion has been fixed.
    09-10-09  $PATH processing has been changed to delay dir stat() and .paths
    	  lookup until the directory is needed in the path search.
    09-09-28  Call the ast setlocale() intercept on unset too.
    09-09-24  A bug in which LANG=foo; LC_ALL=foo; unset LC_ALL; did not revert
    	  LC_CTYPE etc. to the LANG value has been fixed.
    09-09-17  A bug in which unsetting SVLVL could cause a script invoked by
    	  name without #! to core dump has been fixed.
    09-09-16  A bug in which a pipeline in a here-document could hang when the
    	  pipefail option was on has been fixed.
    09-09-09  A bug in the processing of line joining in here documents which
    	  occurred when a buffer began with <escape><new-line> has been fixed.
    09-09-09 +A leading ; with commands in a brace group or parenthesis group
    	  no longer causes an error.  It now is used for the "showme" option.
    09-09-09  A bug in which a subshell containing a background process could
    	  block until the background process completed has been fixed.
    09-09-04  A bug in handing ${var[sub]}, where var is a nameref has been fixed.
    09-09-03  A bug which caused an index array to have the wrong number of elements
    	  when it was converted from a compound variable by adding an another
    	  element has been fixed.
    09-09-03  Specifying export for a compound variable now generates an error.
    09-09-02  $"..." localizations strings are no longer recognized inside `...`.
    09-09-01  A bug in the for loop optimizer in the handling of type static
    	  variables has been fixed.
    09-09-01  An error message is not displayed when * and @ are used as subscripts.
    09-09-01  Several bugs in the processing for types that included an associative
    	  array of another type has been fixed.
    09-09-01  A bug in the tracing of [[ a < b ]] and [[ a > b ]] has been fixed.
    09-08-26  The .sh.file variable was not being set for a script that was run
    	  by name and didn't start with #! and this has been fixed.
    09-08-25  A bug in which a function called to deeply from command substitution
    	  did not display an error message has been fixed.
    09-08-24 +When processing profiles, ksh93 now violates the POSIX standard and
    	  treats &> as a redirection operator similar to bash.
    09-08-23  A bug in the handling of the trap on SIGPIPE that could lead to a
    	  memory fault has been fixed.
    09-08-21  A bug in the handling of the comma operator in arithmetic expressions
    	  that could cause a core dump on some systems has been fixed.
    09-08-20  A bug in which a compound variable containing an array of a type
    	  that doesn't have any elements now expands correctly.
    09-08-19  A bug which disabled function tracing inside a function after
    	  a call to another function has been fixed.
    09-08-19  A bug in which initializing a compound variable instance to another
    	  compound variable by name has been fixed.
    09-08-18  A bug in which compound variable instances could be lost after
    	  an instance that invoked a type method discipline has been fixed.
    09-08-18  A bug in which a discipline function for a type applied to an
    	  array instance when invoked in a function ignored the subscript
    	  has been fixed.
    09-08-18  A scoping error with variables in arithmetic expression with
    	  type variables when reference with a name reference has been fixed.
    09-08-10  Several memory leaks were fixed primarily related to subshells.
    09-08-06  A bug in which setting the trap on CHLD to ignore could cause
    	  a script to hang has been fixed.
    09-07-08  A bug in the processing of name reference assignments when it
    	  contained pattern expansions with quoting has been fixed.
    09-06-22 +The default width for typeset -X has been changed so that there
    	  should be no loss of precision when converting to a string.
    09-06-19  A bug in the printing of array elements for binary variables with
    	  printf %B has been fixed.
    09-06-19  A bug which caused a core dump with trap DEBUG set with an array
    	  assignment with no elements has been fixed.
    09-06-19  A bug with read with typeset -b -Z<num> has been fixed.
    09-06-19  Two bugs related to read -b for array variables has been fixed.
    09-06-19  A bug with typeset for compound variables containing arrays of
    	  compound variables has been fixed.
    09-06-18  A bug in appending a compound variable to a an indexed array of
    	  compound variables has been fixed.
    09-06-18  A bug which occurs when appending a compound variable to an indexed
    	  array element has been fixed.
    09-06-18  Setting VISUAL to a value other than one ending in vi or emacs will
    	  no longer unset the edit mode.
    09-06-17  A bug in typeset -m when moving a local compound variable to a
    	  global compound variable via a name reference has been fixed.
    09-06-17  A bug in appending to nodes of an array of compound variables when
    	  addressing them via nameref has been fixed.
    09-06-17  A bug in typeset -p var, when var is an array of compound variables
    	  in which the output only contained on array element has been fixed.
    09-06-17  The prefix expansion ${!y.@} now works when y is a name
    	  reference to an element of an array.
    09-06-16  Traps on signals that are ignored when the shell is invoked
    	  no longer display.  Previously they were ignored as required but
    	  would be listed with trap -p.
    09-06-12  A bug in vi edit mode in which hitting the up arrow key at the
    	  end of a line longer than 40 characters which caused a core dump
    	  has been fixed.
    09-06-11  A bug in which "eval non-builtin &" would create two processes,
    	  one for the & and another for non-builtin has been fixed.
    09-06-08  When var is an identifier and is unset, ${var} no longer tries to
    	  run command substitution on the command var.
    09-06-08 +Process substitution arguments of the form <(command) can now be
    	  used following the < redirection operator to redirect from command.
    09-05-13  A bug in which redirections of the form 2>&1 1>&5 inside command
    	  substitution could cause the command substitution to hang has been
    	  fixed.
    09-05-12  To conform with POSIX, the -u option only checks for unset variables
    	  and subscript elements rather than checking for all parameters.
    09-05-12  A bug which could cause a core dump when a variable whose name
    	  begins with a . was referenced as part of a name reference inside
    	  a function has been fixed.
    09-05-01  A bug that caused a core dump when SIGWINCH was received and
    	  both vi and emacs mode were off has been fixed.
    09-04-22 +Default alias compound='typeset -C' added.
    09-04-15  A bug that caused ${...;} to hang for large files has been fixed.
    09-04-08  A change was made in the -n option which printed out an incorrect
    	  warning with <>.
    09-04-07  The emacs edit command M-_ and M_. and the vi command _ was fixed
    	  to handle the case there there is no history file.
    09-04-05  A bug in handling new-lines with read -n has been fixed.
    09-04-05  The ENV variable defaults the the file named by $HOME/.kshrc rather
    	  then to the string $HOME/.kshrc.
    09-03-31  A bug in which a nested command substitution with redirections could
    	  leave a file descriptor open has been fixed.
    09-03-24 +ksh now only uses the value of the _ variable on startup if it can
    	  verify that it was set by the invoking process rather than being
    	  inherited by some other ancestor.
    09-03-24 +When ksh is invoked without -p and ruid!=euid, and the shell is
    	  compiled without SHOPT_P_UID or ruid<SHOPT_P_UID, the shell now
    	  enables the -p option.  The previous version instead set the
    	  euid to the ruid as it does for set +p.
    09-03-24 +When SHOPT_P_UID is defined at compile time and the shell is started
    	  without -p and ruid!=euid and ruid>=SHOPT_P_UID then euid is set
    	  to ruid. A bug that did the wrong test (ruid<SHOPT_P_UID) was fixed.
    09-03-17 +The sleep(1) builtin now accept and ISO 8601 PnYnMnDTnHnMnS
    	  duration or date(1) compatible date/time operand.
    09-03-10  If a variable that was left or right justified or zero-filled was
    	  changed with a typeset statement that was left or right justified
    	  or zero-filled, then the original justification no longer affects
    	  the result.
    09-03-10  A bug in the handling of traps when the last command in a script
    	  is a subshell grouping command has been fixed.
    09-03-03  A bug in which an expansion of the form ${!prefix@} could generate
    	  an exception after the return from a function has been fixed.
    09-02-02  A bug in restricted mode in which the value of ENV could be
    	  changed from within a function has been fixed.
    09-02-02  A bug in which an erroneous message indicating that a process
    	  terminated with a coredump has been fixed.
    09-02-02  The exit status when exit was called without an argument from
    	  a signal handler was incorrect and has been fixed.
    09-02-02  A bug in which a function autoloaded in a subshell could cause
    	  a core dump when the subshell completed has been fixed.
    09-02-02  A bug in which 2>&1 inside a command substitution wasn't working
    	  correctly has been fixed.
    09-02-02  A bug in the call stack of arithmetic function with 2 args
    	  returning int has been fixed.
    09-01-30  A bug in which 'eval print \$0' inside a function was giving the
    	  wrong value for $0 has been fixed.
    09-01-28  A bug in which a command substitution could return an exit status
    	  of 127 when the pipefail option is enabled has been fixed.
    09-01-26  ksh93 now generates an error message if you attempt to create
    	  a global name reference to a local variable.
    09-01-26 +The [[ -v var ]] operator was modified to test for array elements.
    09-01-23 +The redirection operator <>; was added.  It is similar to <>
    	  except that if the command it is applied to succeeds, the file
    	  is truncated to the offset at the command completion.
    09-01-23  The default file descriptor for <> was changed to 1.
    09-01-20  A bug in which the exit status specified in an exit trap was
    	  not used when a process terminated with a signal has been fixed.
    09-01-19  A bug in which a signal whose default action is to terminate
    	  a process could be ignored when the process is running a sub-shell
    	  has been fixed.
    09-01-19  A bug in which sending SIGWINCH to a process that reads from a pipe
    	  could cause a memory fault has been fixed.
    09-01-16 +The -R unary operator was added to [[...]] and test to check whether
    	  a variable is a  name reference.
    09-01-16 +The -v unary operator was added to [[...]] and test to check whether
    	  a variable is set.
    09-01-14  The unset built-in was modified to return 0 exit status when
    	  unsetting a variable that was unset to conform with the POSIX
    	  standard.
    09-01-14  The unset built-in was modified to continue to unset variables
    	  after encountering a variable that it could not unset to
    	  conform to the POSIX standard.
    09-01-14  The parameter expansion ${x+value} no longer expands the value of
    	  the variable x when determining whether x is set or not.
    09-01-13  A bug in which background jobs and pipelines that were not waited
    	  for could, in rare instances, cause the shell to go into an infinite
    	  loop or fail has been fixed.
    09-01-06  A bug in indexed arrays of compound variables in which referencing
    	  non-existent sub-variable in an arithmetic expression could cause
    	  the sub-variable to be created has been fixed.
    09-01-05  A bug in which the  character did not escape extended regular
    	  expression pattern characters has been fixed.
    08-12-24  A bug in which killing the last element of a pipe did not cause
    	  a write to the pipe to generate a SIGPIPE has been fixed.
    08-12-19  A bug which could cause command substitution to hang when the
    	  last element of a pipeline in a command substitution was a built-in
    	  and the output was more that PIPE_BUFF.
    08-12-18  A bug which occurs when a here documented marker embedded in a
    	  command substitution occurs on a buffer boundary has been fixed.
    08-12-17  A bug in the output of typeset -p for variables that had attributes
    	  but did not have a value has been fixed.
    08-12-16  A bug in which a name reference to a name reference variable that
    	  references an array element has been fixed.
    08-12-16  A bug in which a variable given both the -A and -C attribute along
    	  with an initial assignment didn't work correctly has been fixed.
    08-12-10  The [[ -t fd ]] test was fixed to handle fd>9.
    08-12-10  A bug where function stack misalignment could cause a bus error
    	  has been fixed.
    08-12-09  Command completion was changed to use  to quote special characters
    	  instead of quoting the argument in single quotes.
    08-12-07  A bug in typeset -m which occurred when the target node was an
    	  associative array element has been fixed.
    08-12-07  A timing bug on some systems (for example darwin), that could
    	  cause the last process of a pipeline entered interactively to fail
    	  with an "Exec format error" has been fixed.
    08-12-04 +SHOPT_BGX enables background job extensions. Noted by "J" in
    	  the version string when enabled. (1) JOBMAX=n limits the number
    	  of concurrent & jobs to n; the n+1 & job will block until a
    	  running background job completes. (2) SIGCHLD traps are queued
    	  so that each completing background job gets its own trap; $! is
    	  set to the job pid and $? is set to the job exit status at the
    	  beginning of the trap. (3) sleep -s added to sleep until the time
    	  expires or until a signal is delivered.
    08-12-04  The sign of floating point zero is preserved across arithmetic
    	  function calls.
    08-12-04  A bug that caused print(1) to produce garbled stdout/stderr
    	  output has been fixed.
    08-12-04  A bug in which printf "%d "'<euro>'" did not output the
              numerical value of the EURO symbol, 8354, has been fixed.
    08-11-24 + /dev/fd* and /dev/std* redirections are first attempted with
    	  open() to preserve seek semantics; failing that the corresponding
    	  file descriptors are dup()'d.
    08-11-20  A bug which could cause a core dump if a function compiled with
    	  shcomp was found has been fixed.
    08-11-20  A bug in which jobs were not cleared from the jobs table for
    	  interactive shells when the pipefail option is on has been fixed.
    08-11-11  A bug in which a field that was unset in a type definition and later
    	  set for an instance could appear twice when displaying the variable
    	  has been fixed.
    08-11-11  A bug in which running a simple command & inside a function would
    	  not return the correct process id has been fixed.
    08-11-10  A bug in which the exit status of a command could be lost if the pid
    	  was that of the most recent command substitution that had completed
    	  has been fixed.
    08-11-10  The maximum depth for subshells has been increased from 256 to 65536.
    08-11-06  A bug which could cause a core dump when the _ reference variable was
              used as an embedded type with a compound assignment has been fixed.

    08-10-31  --- Release ksh93t  ---
    08-10-31  Variable scoping/initialization bugs that could dump core were fixed.
    08-10-24  The lexer now accepts all RE characters for patterns prefixed
    	  with a ksh ~(...) option expression.
    08-10-24 +For ${var/pat/sub}   in sub expands to the text matched by pat.
    08-10-18  A bug in array scoping that could dump core has been fixed.
    08-10-10  read -n and -N fixed to count characters in multibyte locales.
    08-10-10  A bug that mishandled _.array[] type references has been fixed.
    08-10-09 +${.sh.version} now contains a concatenation of the following (after
    	  'Version') denoting compile time features:
    		A	SHOPT_AUDIT
    		B	SHOPT_BASH
    		L	SHOPT_ACCT
    		M	SHOPT_MULTIBYTE
    08-10-09  A bug that caused subshell command substitution with redirection
    	  to hang has been fixed.
    08-10-08  Output errors, other than to stderr, now result in a diagnostic.
    08-10-08  ksh93 now supports types that contain arrays of other types as
    	  members.  Earlier versions core dumped in this case.
    08-10-05  A bug which caused the shell to emit a syntax error for an arithmetic
    	  statement of the form (( var.name[sub] = value)) has been fixed.
    08-10-01  A bug that caused subshell command substitution to hang has
    	  been fixed.
    08-09-29  When the -p export option of typeset is used with other options,
    	  only those variables matching the specified options are displayed.
    08-09-29  When the shell reads the environment and finds variables that are
    	  not valid shell assignments, it now passes these on to subsequent
    	  commands rather than deleting them.
    08-09-29  A bug in the display of compound variables containing an indexed
    	  array of compound variables has been fixed.
    08-09-29  A bug in the display of compound variables containing an associative
    	  array with a subscript containing a . in the name has been fixed.
    08-09-26  A core dump in the subshell environment restore has been fixed.
    08-09-24  $(...) has been fixed to properly set the exit status in $?.
    08-09-23  $(<...) with IFS=$'n' has been fixed to retain all but the last
    	  of multiple trailing newlines.
    08-09-23  The -p option to typeset when used with other attributes, restricts
    	  the output to variables with the specified attributes.
    08-09-22  A bug that sometimes lost the exit status of a job has been fixed.
    08-09-21  A bug that retained trailing command substitution newlines in
    	  cases where the command caused the shell to fork has been fixed.
    08-09-19  type, whence -v, and command -v were fixed to comply with POSIX
    	  by writing 'not found' diagnostics to the standard error.
    08-09-18  test and [...] were fixed to comply with POSIX in the case
    	  of test '(' binop ')' where binop is a valid binary test operator.
    08-09-16 +If a method discipline named create is specified when defining a
    	  type, this function will be called when an instance is created.
    08-09-15 +The variable _ is now set as a reference to the compound variable
    	  when defining a compound variable or a type.
    08-09-10  The shell now prints an error message when the type name specified
    	  for an indexed array subscript is not an enumeration type.
    08-09-10  A bug in which a subshell that spawned a background process could
    	  loose output that was produced after the foreground completed
    	  has been fixed.
    08-09-10  A timing bug on some systems that could cause coprocesses started by a
    	  subshell to not clean up and prevent other coprocesses has been fixed.
    08-09-09  The typeset -m option is now able to rename array elements from
    	  the same array.
    08-09-09  The exit status of 2 from the DEBUG trap causes the next command
    	  to be skipped.  An exit value of 255 from a DEBUG trap called from
    	  a function causes the function to return.
    08-09-08  A bug in which a coprocess created in a subshell that did not
    	  complete when the subshell terminated could prevent a coprocess
    	  from being created in the parent shell has been fixed.
    08-09-05  An assignment of the form name1=name2 where name1 and name2
    	  are both compound variables causes name1 to get a copy of name2.
    	  name1+=name2 causes name2 sub-variables to be appended to name1.
    08-09-05  A bug in which unsetting a compound variable did not unset all
    	  the sub-variables has been fixed.
    08-09-01  A bug in the subshell cleanup code that could cause SIGSEGV has
    	  been fixed.
    06-08-26 +The SHLVL variable which is an environment variable used by bash
              and zsh that gets incremented when the shell starts.
    08-08-25 +For an indexed array, a negative subscript now refers to offsets
    	  from the end so that -1 refers to the last element.
    08-08-24  An alignment error for shorts on 64 bit architectures has been fixed.
    08-08-22  If oldvar is a compound variable, typeset -C newvar=oldvar creates
    	  newvar as a copy of oldvar.
    08-08-19 +The ALRM signal no longer cause the sleep builtin to terminate.
    08-08-13  When used in an arithmetic expression, the .sh.version variable
    	  now produces a number that will be increasing for each release.
    08-08-11  A bug in which type instantiation with a compound assignment in
    	  a dot script in which the type is defined has been fixed.
    08-08-07 +The -m option has been added to typeset to move or rename a
    	  variable.  Not documented yet.
    08-08-06  A bug in read when used in a loop when a prompt was specified
    	  when reading from a terminal has been fixed.
    08-08-01  A bug with the pipefail option in which a nested pipeline could
    	  cause an asynchronous command to block has been fixed.
    08-08-01  A for loop optimizer bug that treats .sh.lineno as an invariant
    	  has been fixed.
    08-07-30  A bug in which expanding compound variable that had a get discipline
    	  from with a here document could cause a syntax error has been fixed.
    08-07-18  A bug in which a nameref caused a local variable to be created
    	  rather than binding to an existing variable in the global scope
    	  has been fixed.
    08-07-17  A bug which occurred when a nameref was created from within a
    	  function that was  part of a pipeline has been fixed.
    08-07-14 +The compile option SHOPT_STATS was added. With this option the
    	  compound variable .sh.stats keeps usage statistics that could help
    	  with performance tuning.
    08-07-10 +The output of set now always uses a single line for each variable.
    	  For array variables, the complete set of values is now displayed.
    08-07-09 +The typeset -C option can be used with arrays to indicate that
    	  each element should default to a compound variable.
    08-07-08 +The %B format now outputs compound variables and arrays.  The
    	  alternate flag # can be used to cause output into a single line.
    08-07-03  When the window change signal, WINCH, is received, the current
    	  edit line is redrawn in place.
    08-07-01  A bug in the handling of shared variables when inside an embedded
    	  type has been fixed.
    08-06-29  A bug in multiline edit mode which occurred when the prompt length
    	  was three characters or less has been fixed.
    08-06-23  A bug in which the SIGCLD was not be triggered when background
    	  jobs completed has been fixed.
    08-06-23  _KSH_VERSION added as a name reference to .sh.version.
    08-06-20  type now outputs 'special builtin' for special builtins.
    08-06-19  A couple of bugs in multi-dimensional arrays have been fixed.
    08-06-19  A bug in which a syntax error in a dot script could generated
    	  a syntax error in the next subsequent command has been fixed.
    08-06-17  Reduced the maximum function call depth to 2048 to avoid exceptions
    	  on some architectures.
    08-06-16  A bug in which printf "%B" could generate an exception when the
    	  specified variable was not set has been fixed.
    08-06-16 +When typeset -p is followed by variable names, it now displays
    	  the attributes names and values for the specific names.
    08-06-14  A bug that could effect the drawing of the screen from multiline
    	  emacs or gmacs mode when walking up the history file has been fixed.
    08-06-13  A bug in which a compound variable defined in a subshell could
    	  have side effects into the parent shell has been fixed.
    08-06-13  A number of bugs related to using .sh.level to set the stack from
    	  for DEBUG traps have been fixed.
    08-06-13 +The .sh.lineno variable has been added.  When .sh.level is changed
    	  inside a DEBUG trap, the .sh.lineno contains the calling line number
    	  for the specified stack frame.
    08-06-13  The .sh.level variable has been documented and now works.
    08-06-11 +The -C option has been added to read for reading compound command
    	  definitions from a file.
    08-06-11 +The . command is now permitted inside a compound command definition.
    	  The dot script can contain declaration commands and dot commands.
    08-06-09 +Add -C option to typeset so that typeset -C foo, is equivalent
    	  to foo=().
    08-06-09  Added -n warning message for typeset option orderings that are valid
    	  with ksh88 but not valid with ksh93, for example Lx5.
    08-06-09  A bug in which the return value for an assignment command containing
    	  a command substitution with that failed was zero when the assignment
    	  contained redirections has been fixed.
    08-06-09  A bug in the quoting of $ inside a ERE pattern ~(E)(pattern)
    	  has been fixed.
    08-06-06  A bug when processing `` command substitution with the character
    	  sequence \$' has been fixed.
    08-06-02 +When defining a type, the typeset -r attribute causes this field
    	  to be required to be specified for each instance of the type and
    	  does not allow a default value.
    08-06-02  Several bugs in which compound variables were modified by
    	  subshells have been fixed.
    08-05-22 +The ceil function has been added to the math functions.
    08-05-21  A bug in which a name reference defined in a function and passed
    	  as an argument to another function could cause an incorrect binding.
    08-05-21  A bug in freeing compound variables that are local to functions
    	  has been fixed.
    08-05-19 +The array expansions ${array[sub1..sub2]} and ${!array[sub1..sub2]}
    	  to expand to the value (or subscripts) for array between sub1 and
    	  sub2 inclusive.  For associative arrays, the range is based on
    	  location in the POSIX locale.  The .. must be explicit and cannot
    	  result from an expansion.
    08-05-15  The trap on SIGCLD is no longer triggered by the completion of
    	  the foreground job as with ksh88.
    08-05-14  A bug in the implementation of the editing feature added on
    	  07-09-19 in emacs mode has been fixed.
    08-05-12  A bug in processing the test built-in with parenthesis has been
    	  fixed.
    08-05-12  The unset built-in now returns non-zero when deleting an array
    	  subscript that is not set.
    08-05-08 +Changing the value of HISTFILE or HISTSIZE will cause the old
    	  history file to be close and reopened with the new name or size.
    08-05-08  When FPATH is changed functions that were found via a path search
    	  will be searched for again.
    08-05-08  A parser bug in which reserved words and labels were recognized
    	  inside compound indexed array assignment after a new-line has
    	  been fixed.
    08-05-07  A bug in getopts when handling numerical option arguments has
    	  been fixed.
    08-05-07 +The typeset -S option was added for variables outside type
    	  definitions to provide a storage class similar to C static
    	  inside a function defined with function name.  When outside
    	  type definitions and outside a function, the -S option cause
    	  the specified variable so be unset before the assignment and
    	  before the remaining attributes are supplied.
    08-05-07  A bug that affected the cursor movement in multiline mode when
    	  a character was deleted from near the beginning of the any
    	  line other than the first.
    08-05-01  In multiline edit mode, the refresh operation will now clear
    	  the remaining portion of the last line.
    08-05-01  A bug in computing prompt widths for the edit modes for prompts
    	  with multibyte characters has been fixed.
    08-05-01  A bug in the multiline edit mode which could cause the current
    	  line to be displayed incorrectly when moving backwards from third
    	  or higher line to the previous line has been fixed.
    08-05-01  A bug in which options set in functions declared with the function
    	  name syntax were carried across into functions invoked by these
    	  functions has been fixed.
    08-04-30  A bug which could cause a coprocess to hang when the read end
    	  is a builtin command has been fixed.
    08-04-30 +The emacs and vi editors have been modified to handle window
    	  change commands as soon as they happen rather than waiting for
    	  the next command.
    08-04-28  A bug in which ${!x} did not expand to x when x was unset has been
    	  fixed.
    08-04-27  A bug in which the assignment x=(typeset -a foo=([0]=abc)) created
    	  x.foo as an associative array has been fixed.
    08-04-25  A bug in which $# did not report correctly when there were more
    	  than 32K positional parameters has been fixed.
    08-04-04  Choose the name _ as the sub-variable that holds type or instance
    	  specific data used by discipline functions.
    08-03-27  A bug in which the terminal group was not given back to the parent
    	  shell when the last part of a pipeline was handled by the parent shell
    	  and the other parts of the pipeline complete has been fixed.
    	  The symptom was that the pipeline became uninterruptable.
    08-03-25  A bug in restricted mode introduced in ksh93s that caused scripts
    	  that did not use #! to executed in restricted mode has been fixed.
    08-03-25  A bug in which the pipefail option did not work for a pipeline
    	  within a pipeline has been fixed.
    08-03-24  A bug in which OPTIND was not set correctly in subshells has
    	  been fixed.
    08-03-24  A bug which could cause a memory exception when a compound variable
    	  containing an indexed array with only element 0 defined was expanded.
    08-03-20  A bug in which ${!var[sub].*} was treated as an error has been fixed.
    08-03-20  Associative array assignments of the form ([name]=value ...)
    	  now allow ; as well as space tab and new line to separate elements.
    08-03-18  A buffering problem in which standard error was sometimes
    	  not flushed before sleep has been fixed.
    08-03-17  A bug in which a signal sent to $$ while in a subshell would be
    	  sent to the subshell rather than the parent has been fixed.
    08-03-17 + A --default option added to set(1) to handle set +o POSIX semantics.
    	  set --state added as a long name alias for set +o.
    08-03-14  A bug in which using monitor mode from within a script could
    	  cause the terminal group to change has been fixed.
    08-03-10  The new ${...} command substitution will treat the trailing }
    	  as a reserved word even if it is not at the beginning of a command,
    	  for example, ${ date }.
    08-03-10  If the name of the ENV begins with /./ or ././ then the
    	  /etc/ksh.kshrc file will not be executed on systems that support
    	  this interactive initialization file.
    08-03-07  A bug in which ksh -i did not run the ENV file has been fixed.
    08-03-07  A bug in which ulimit did not always produce the same output as
    	  ulimit -fS has been fixed.
    08-03-04  A bug in multiline mode in emacs and vi mode which could cause the
    	  cursor to be on the wrong line when interrupt was hit has been fixed.
    08-03-03  The change made in ksh93s+ on 07-06-18 in which braces became
    	  optional for ${a[i]} inside  [[...]] was restored in the case
    	  where the argument can be a pattern.
    08-03-03  A bug in which creating a name reference to an associative array
    	  instance would fail when the subscript contained characters [ or
    	  ] has been fixed.
    08-02-29 +The redirection operator >; has been added which for non-special
    	  files, generates the output in a temporary file and writes the
    	  specified file only of the command has completed successfully.
    08-02-15  A bug in ${var/pattern/string} for patterns of the form ?(*) and +(*)
    	  has bee fixed.
    08-02-07  A bug in which test \( ! -e \) produced an error has been fixed.
    08-02-14 +The typeset -a option can now optionally be followed by the name
    	  of an enumeration type which allows subscripts to be enumerations.
    08-02-14 +The enum builtin which creates enumeration types has been added.
    08-02-12  The backoff logic when there are no more processes has been fixed.
    08-02-07  The -X option has been added to typeset.  The -X option creates
    	  a double precision number that gets displayed using the C99 %a
    	  format.  It can be used along with -l for long double.
    08-01-31  The -T option to typeset has been added for creating typed
    	  variables.  Also the -h and -S options have been added to
    	  typeset that are only applicable when defining a type.
    08-01-31  The prefix expansion operator @ has been added.  ${@name}
    	  expands to the type of name or yields the attributes.
    07-11-15  A bug in the macro expander for multibyte characters in which
    	  part of the character contains a file pattern byte has been fixed.
    07-10-03  A bug in which : was not allowed as part of an alias name has been
    	  fixed.
    07-09-26  A bug in which appending a compound variable to a compound variable
    	  or to an index array didn't work has been fixed.
    07-09-19  In both emacs and vi edit mode, the escape sequence \E[A (usually
    	  cursor up, when the cursor is at the end of the line will fetch
    	  the most recent line starting with the current line.
    07-09-18  The value of ${!var} was correct when var was a reference to an
    	  array instance.
    07-09-18  The value of ${!var[sub]} was not expanding to var[sub] and this
    	  was fixed.  It also fixed ${name} where name is a name reference
    	  to var[sub].
    07-09-18 +It is now legal to create a name reference without an initialization.
    	  It will be bound to a variable on the first assignment.
    07-08-30 +A discipline function can be invoked as ${x.foo} and is equivalent
    	  to ${ x.foo;} and can be invoked as x.foo inside ((...)).
    07-07-09  A bug in which typeset -a did not list indexed arrays has been
    	  fixed.
    07-07-03 +The command substitution ${ command;} has been added.  It behaves
    	  like $(command) except that command is executed in the current
    	  shell environment.  The ${ must be followed by a blank or an
    	  operator.

    08-04-17  --- Release ksh93s+  ---
    08-04-17  A bug in which umask was not being restored correctly after a
              subshell has been fixed.
    08-04-15  A bug in which sending a STOP signal to a job control shell started
    	  from within a shell function caused cause the invoking shell to
    	  terminate has been fixed.
    08-04-11  A bug which caused $(exec > /dev/null) to go into an infinite loop
    	  has been fixed.
    08-03-27  A bug in which typeset -LZ was being treated as -RZ has been fixed.
    08-03-06  A bug with ksh -P on systems that support the the profile shell,
              in which it would exit after running a non-builtin has been fixed.
    08-01-31  A bug in which command substitution inside ((...)) could cause
    	  syntax errors or lead to core dumps has been fixed.
    08-01-17  A bug in which discipline functions could be deleted when invoked
    	  from a subshell has been fixed.
    08-01-17  A bug in which a command substitution consisting only of
    	  assignments was treated as a noop has been fixed.
    08-01-17  A bug in which discipline functions invoked from withing a
    	  compound assignment could fail has been fixed.
    08-01-16  Incomplete arithmetic assignments, for example ((x += )), now
    	  generate an error message.
    08-01-16  A bug in which a set discipline defined for a variable before
    	  an array assignment could cause a core dump has been fixed.
    08-01-03  A bug in on some systems in which exit status 0 is incorrectly
    	  returned by a process that catches the SIGCONT signal is stopped
    	  and then continued.
    07-12-13  A race condition in which a program that has been stopped and then
    	  continued could loose the exit status has been fixed.
    07-12-12  Code to check for file system out of space write errors for all
    	  writes has been added.
    07-12-11  A bug in the macro expander for multibyte characters in which
    	  part of the character contains a file pattern byte has been fixed.
    07-12-06  A bug in the emacs edit mode when multiline was set that output
    	  a backspace before the newline to the screen has been fixed.
    07-12-04  A bug in which using <n>TAB after a variable name listing expansion
    	  in the edit modes would cause the $ to disappear has been fixed.
    07-11-28  A bug in which setting IFS to readonly could cause a subsequent
    	  command substitution to fail has been fixed.
    07-11-27  A work around for a gcc 4.* C99 "feature" that could cause a job
    	  control shell to go into an infinite loop by adding the volatile
    	  attribute to some auto vars in functions that call setjmp().
    07-11-27  A bug in which the shell could read ahead on a pipe causing the
    	  standard input to be incorrectly positioned has been fixed.
    07-11-27  A bug in which compound variable UTF-8 multibyte values were not
    	  expanded or traced properly has been fixed.
    07-11-21  A bug where an unbalanced '[' in a command argument was not treated
    	  properly has been fixed.
    07-11-15  A bug in which compatibility mode (no long option names) getopts(1)
    	  incorrectly set the value of OPTARG for flag options has been fixed.
    07-11-15  A bug in which "hash -- name" treated "--" as an invalid name operand
    	  has been fixed.
    07-11-15  typeset now handles "-t -- [-r] [--]" for s5r4 hash(1) compatibility.
    07-11-15  A bug in which the umask builtin mis-handled symbolic mode operands
    	  has been fixed.
    07-11-15  Bugs in which shell arithmetic and the printf builtin mis-handled the
    	  signs of { -NaN -Inf -0.0 } have been fixed.
    07-11-15 +The full { SIGRTMIN SIGRTMIN+1 ... SIGRTMAX-1 SIGRTMAX } range
    	  of signals, determined at runtime, are now supported.
    07-11-15  A bug in which creating an index array with only subscript 0 created
    	  only a simple variable has been fixed.
    07-11-14  A bug in which appending to an indexed array using the form
    	  name+=([sub]=value) could cause the array to become an associative
    	  array has been fixed.
    07-11-14  A bug in which typeset without arguments could coredump if a
    	  variable is declared as in indexed array and  has no elements has
    	  been fixed.
    07-11-14  A bug in which creating a local SECONDS variable with typeset in
    	  a function could corrupt memory has been fixed.
    07-11-14  A bug which could cause a core dump when a script invoked by name
    	  from a function used compound variables has been fixed.
    07-11-05  A bug in which printf %d "'AB" did not diagnose unconverted characters
    	  has been fixed.
    07-11-05  printf %g "'A" support added for all floating point formats.
    07-11-01  A bug in which typeset -f fun did not display the function definition
              when invoked in a subshell has been fixed.
    07-10-29  The sleep builtin was fixed so that all floating point constants
    	  are valid operands.
    07-10-10  A bug in which the locale was not being restored after
              LANG=value command has been fixed.
    07-09-20  A bug in which a nameref to a compound variable that was local
    	  to the calling function would not expand correctly when displaying
    	  is value has been fixed.
    07-09-19  A bug which cause cause a core dump if .sh.edchar returned
    	  80 characters or more from a keyboard trap has been fixed.
    07-09-14  A bug in which could cause a core dump when more than 8 file
    	  descriptors were in use has been fixed.
    07-09-10  A bug in which creating a name reference to an instance of
    	  an array when the array name is itself a reference has been fixed.
    07-09-10  The file completion code has been modified so that after an = in
    	  any word, each : will be considered a path delimiter.
    07-09-06  A bug in which subprocess cleanup could corrupt the malloc() heap
              has been fixed.
    07-08-26  A bug in which a name reference to an associative array instance
    	  could cause the subscript to be evaluated as an arithmetic expression
    	  has been fixed.
    07-08-22  A bug in which the value of an array instance was of a compound
    	  variable was not expanded correctly has been fixed.
    07-08-14  A bug which could cause a core dump when a compound assignment was
    	  made to a compound variable element with a typeset -a attribute
    	  has been fixed.
    07-08-08  A bug in which a trap ignored in a subshell caused it to be
    	  ignored by the parent has been fixed.
    07-08-07  A bug in which the set command would generated erroneous output
    	  for a variable with the -RZ attribute if the variable name had been
    	  passed to a function has been fixed.
    07-08-02  A bug in which read x[1] could core dump has been fixed.
    07-08-02  A second bug in which after read x[sub] into an associative array
    	  of an element that hasn't been assigned could lead to a core dump
    	  has been fixed.
    07-07-31  A bug in which a pipeline that completed correctly could have
    	  an exit status of 127 when pipefail was enabled has been fixed.
    07-07-09 +The SHOPT_AUDIT compile option has been added for keyboard logging.
    07-06-25  In vi insert mode, ksh no longer emits a backspace character
    	  before the carriage return when the newline is entered.
    07-06-25  A bug in which pipefail would cause a command to return 0
    	  when the pipeline was the last command and the failure happened
    	  on a component other than the last has been fixed.
    07-06-25  A bug in the expansion of ${var/pattern/rep} when pattern or rep
    	  contained a left parenthesis in single quotes has been fixed.
    07-06-18  The braces for a subscripted variable with ${var[sub]} are now
    	  optional when inside [[...]], ((...)) or as a subscript.
    07-05-28  A bug in brace expansion in which single and double quotes did
              not treat the comma as a literal character has been fixed.
    07-05-24  The -p option of whence now disables -v.
    07-05-23  Several bug fixes in compound variables and arrays of arrays
    	  have been made.
    07-05-15  A bug in which the %B format of printf was affected  by the
    	  locale has been fixed.
    07-05-14  A bug in which  was not removed in the replacement pattern with
    	  ${var/pattern/rep} when it was not followed by  or a digit has
    	  been fixed.
    07-05-10  A bug in which ksh -R file core dumped if no script was specified
    	  has been fixed.  it not displays an error message.
    07-05-07  Added additional Solaris signals to signal table.
    07-04-30  A bug in which a pipeline with command substitution inside a
    	  function could cause a pipeline that invokes this function to
    	  hang when the pipefail option is on has been fixed.
    07-04-30 +Added -q to whence.
    07-04-18  A small memory leak with each redirection of a non-builtin has
    	  been fixed.
    07-03-08  A bug in which set +o output command line options has been fixed.
    07-03-08  A bug in which an error in read (for example, an invalid variable
    	  name), could leave the terminal in raw mode has been fixed.
    07-03-06  A bug in which read could core dump when specified with an array
    	  variable with a subscript that is an arithmetic expression has
    	  been fixed.
    07-03-06  Several serious bugs with the restricted shell were reported and
    	  fixed.
    07-03-02  If a job is stopped, and subsequently restarted with a CONT
    	  signal and exits normally, ksh93 was incorrectly exiting with
    	  the exit status of the stop signal number.
    07-02-26 +M-^L added to emacs mode to clear the screen.
    07-02-26  A bug in which setting a variable readonly in a subshell would
    	  cause an unset error when the subshell completed has been fixed.
    07-02-19 +The format with printf uses the new = flag to center the output.
    07-02-19  A bug in which ksh93 did not allow multibyte characters in
    	  identifier names has been fixed.
    07-02-19  A bug introduced in ksh93 that causes global compound variable
    	  definitions inside functions to exit with "no parent" has been fixed.
    07-02-19  A bug in which using compound commands in process redirection
    	  arguments would give syntax errors <(...) and >(...) has been fixed.
    07-01-29  A bug which caused the shell to core dump which can occur when a
    	  built-in exits without closing files that it opens has been fixed.
    07-01-26  A bug in which ~(E) in patterns containing  that are not inside ()
    	  has been fixed.

    06-12-29  --- Release ksh93s  ---
    06-12-29  A bug in which the value of IFS could be changed after a command
    	  substitution has been fixed.
    06-12-22 +/dev/(tcp|udp|sctp)/HOST/SEVRICE now handles IPv6 addresses on
    	  systems that provide getaddrinfo(3).
    06-12-19 +A -v option was added to read.  With this option the value of
    	  the first variable name argument will become the default value
    	  when read from a terminal device.
    06-11-20  A bug in which "${foo[@]:1}}" expands a null argument (instead of
    	  no argument), when foo[0] is not empty has been fixed.
    06-11-16  The discipline functions have been modified to allow each subscript
    	  to act independently.  Currently the discipline function will not
    	  be called when called from a discipline function of the same variable.
    06-11-14  A bug which could cause a core dump if a file descriptor for
    	  an internal file was closed from with a subshell has been fixed.
    06-10-30 +The redirections <# pattern, and <## pattern have been added.
    	  Both seek forward to the beginning of the next line that contains
    	  the pattern.  The <## form copies the skipped portion to standard
    	  output.
    06-10-26 +On systems that support stream control transport, the virtual file
    	  name /dev/sctp/host/port can now be used to establish connections.
    06-10-26 +The printf modifier # when used with d produces units in thousands
    	  with a single letter suffix added.  The modifier # when used with
    	  the i specification provides units of 1024 with a two letter suffix.
    06-10-24  The value of $! is now set to the process id of a job put
    	  into the background with the bg command as required by POSIX.
    06-10-23  A bug in which the value of $! was affected by a background
    	  job started from a subshell has been fixed.
    06-10-23  A bug in ${var:offset:len} in multibyte locales has been fixed.
    06-10-15 +The remaining math functions from C99 were added for any system
    	  that supports them.
    06-10-13  The klockwork.com software detected a few coding errors that
    	  have been fixed.
    06-10-12  A bug when skipping over `...` with ${x:=`...`} when x is set
    	  has been fixed.
    06-10-11  A bug in process floating constants produced by the %a format
    	  of printf has been fixed.
    06-10-06  A bug in which IFS was not being restored correctly in some
    	  cases after a subshell has been fixed.
    06-10-06  A bug in which pipefail was not detecting some failures in
    	  pipelines with 3 or more states has been fixed.
    06-10-03  A bug in the processing of >(...) with builtins which could
    	  cause the builtin to hang has been fixed.
    06-10-03  A bug in the for loop optimizer which causes >(...) process
    	  substitution to be ignored has been fixed.
    06-09-17 +The -a option was added to typeset for indexed arrays.  This
    	  is only needed when using the ([subscript]=value ...) form.
    06-09-06 +The showme option was added.  Each simple command not beginning
    	  with a redirection and not occurring with in the while, until, if,
    	  select condition can be preceded by a semi-colon which will
    	  be ignored when showme is off.  When showme is on, any command
    	  preceded by a colon will be traced but not executed.
    06-08-16 +As a new feature, a leading ~(N) on a pattern has no effect
    	  except when used for file expansion.  In this case if not
    	  matches are found, the pattern is replaced by nothing rather
    	  than itself.
    06-08-11  A bug in the expansion of ${.sh.match[i]:${#.shmatch[i]}} has
    	  been fixed.
    06-08-10 +The read builtin options -n and -N have been modified to treat
              the size as characters rather than bytes unless storing into a
    	  binary (typeset -B) variable.
    06-07-27 +When the here document operator << is followed directly by a #
    	  rather than a -, the first line of the here-document determines
    	  how much whitespace is removed for each line.
    06-07-26  A bug in the C-shell history (enabled with set -H) in which the
    	  history event !$ was not processed has been fixed.
    06-07-21  A bug on some systems in which assigning PATH on a command line
    	  would not take effect has been fixed.
    06-07-20  Add ksh93 and rksh93 as allowable names for ksh binaries.
    06-07-20  Removed the SHOPT_OO compilation option which was only partially
    	  implemented.
    06-07-20  The ability to use egrep, grep, and fgrep expressions within
    	  shell patterns has been documented.
    06-07-17  A bug with arithmetic command expressions for locales in which
    	  the comma is a thousands separator has been fixed.
    06-07-13 +The default HISTSIZE was increased from 128 to 512.
    06-07-13  A multibyte problem with locales that use shift codes has been fixed.
    06-06-23  A number of bug fixes for command, file, and variable completion
    	  have been mode.
    06-06-20 +Floating point division by zero now yields the constant Inf or -Inf
    	  and floating functions with invalid arguments yield NaN.
    06-06-20 +The floating point constants Inf and NaN can be used in arithmetic
    	  expressions.
    06-06-20 +The functions isinf(), isnan(), tanhl() have been added for
    	  arithmetic expressions.
    06-06-13  Internal change to use ordering for variables instead of hashing
    	  to speed up prefix matching.
    06-06-13  A window between fork/exec in which a signal could get lost
    	  and cause a program to hang has been eliminated
    06-06-13  A bug in edit completion with quoted strings has been fixed.
    06-06-07  The restricted options can now be enabled by set as well as on
    	  the command line.  Once set, it can not be disabled.
    06-06-04  Modified built-in binding so that for systems for which /bin
              and /usr/bin are the same, a builtin bound to /bin will get
    	  selected when either /bin or /usr/bin is scanned.
    06-06-04 +Added literal-next character processing for emacs/gmacs mode.
    	  This change is not compatible with earlier versions of ksh93
              and ksh88 when the stty lnext is control-v.  The sequence
    	  escape-control-v will display the shell version.
    06-05-31 +Modified emacs and vi mode so that entering a TAB after a partial
    	  TAB completion, generates a listing of possible completions.
    	  After the second TAB, a number followed by a TAB will perform
    	  the completion with the corresponding item.
    06-05-19 +Modified arithmetic so that conversions to strings default to
    	  the maximum number of precision digits.
    06-05-16  Bug fixes for multibyte locales.
    06-05-10  The =~ operator was added to [[...]] and  [[ string ~= ERE ]]
    	  is equivalent to [[ string == ~(E)ERE ]].
    06-04-25  A bug in the vi edit mode which could cause the shell to core dump
    	  when switching from emacs mode.
    06-04-17  A bug in which using LANG or LC_ in assignment lists with builtins
    	  did not restore the localed correctly has been fixed.
    06-04-04  A bug in which discipline functions could not be added to variables
    	  whose names started with .sh has been fixed.
    06-03-28 +The -s option to typeset was added to modify -i to indicate short
    	  integers.
    06-03-28  A bug in which variables assignment lists before functions
    	  defined with function name were not passed on the functions
    	  invoked by this function has been fixed.
    06-03-28  A bug in which name references defined within a function defined
    	  with function  name could not be used with compound variables has
    	  been fixed.
    06-03-27  A bug in which read <&p (print >&p) would cause the coprocess input
    	  (output) pipe to close before reading from (after writing to)
              it has been fixed.
    06-02-28  A bug in which stopping a job created with the hist builtin command
    	  would create a job that could not be restarted has been fixed.

    06-01-24  --- Release ksh93r  ---
    06-01-24  A bug in which running commands with standard output closed would
    	  not work as expected has been fixed.
    06-01-23  A bug in which print -u<n> could fail when file descriptor <n> was
    	  open for writing has been fixed.
    06-01-19  The ?: arithmetic operator fixed to work when the operation after
    	  the colon was an assignment.
    05-12-24  A bug which could lead to a core dump when elements of a compound
    	  variable were array elements, i.e. foo=(bar=(1 2)), has been fixed.
    05-12-13  An arithmetic bug in which x+=y+=z was not working has been fixed.
    05-12-13  An arithmetic bug in which x||y was returning x when x was non-zero
    	  rather than 1 has been fixed.
    05-12-07 +The aliases for integer and float have been changed to use attributes
    	  -li and -lE to handle long long and long double types.
    05-12-07 +The histexpand (-H) option has been added which allows C-shell
    	  style history expansions using the history character !.
    05-12-07 +The multiline option was added which changes that way the edit
    	  modes handle lines longer than the window width.  Instead of
    	  horizontal scrolling, multiple lines on the screen are used.
    05-12-05  The whence builtin now returns an absolute pathname when the
              command is found in the current directory.
    05-11-29  A bug which caused ksh -c '[[ ! ((' to core dump rather than
    	  report a syntax error has been fixed.
    05-11-29  A bug when reading fixed length records into typeset -b variables
    	  which caused a zero byte to terminate the value has been fixed.
    05-11-22 +The ability to seek to an offset within a file has been added
    	  with the new I/O redirection operators, <#  and >#.  Currently,
    	  these redirection operators must be followed by ((expr))
    	  but in a future release, it should be able to used to seek forward
    	  to the specified shell pattern.  In addition $(n<#) expands to the
    	  current byte offset for file descriptor n.
    05-11-22 +The .sh.match array variable is now set after each [[ ... ]]
    	  pattern match.  Previously it was only set for substring matches.
    05-10-17  A bug in which the library path variable could be prefixed
              with a directory when a .path file was not encountered in
    	  the directory of the executable has been fixed.
    05-09-15  A for/while loop optimizer bug in which $OPTIND was not
    	  correctly expanded has been fixed.
    05-09-05  A bug in which a history command that invoked a history
    	  command could go into an infinite loop has been fixed.
    05-08-31 +In the case that IFS contains to adjacent new-lines so that
    	  new-line is not treated as a space delimiter, only a single
    	  new-line is deleted at the end of a command substitution.
    05-08-19 +When a tilde substitution expands to the / directory and is
    	  followed by a /, it is replaced by the empty string.
    05-08-16  A bug in which n<&m did not synchronize m has been fixed.
    05-08-16  A bug in which process substitution  ( <() and >() ) was not
    	  working within for and while loops has been fixed.
    05-07-24  A bug in which the pattern ~(E)(foo|bar) was treated as a syntax
    	  error has been fixed.
    05-07-24  A bug in completion with <n>=, where n was the one of the
    	  previous selection choices has been fixed.
    05-07-21  A bug with multibyte input when no edit mode was specified which
    	  caused the input line to shift left/right has been fixed.
    05-06-24  A race condition which could cause the exit status to get lost
    	  on some fast systems has been fixed.
    05-06-21  A bug in which nested patterns of the form {m,n}(pat) would cause
    	  syntax errors has been fixed.
    05-06-21  A bug in the macro expander has been fixed which could cause a
              syntax error for an expansion of the form ${x-$(...)} when
    	  x is set and the command substitution contained certain strings.
    05-06-08 +On systems for which echo does not do System V style  expansions,
    	  the -e option was added to enable these expansion.
    05-06-08  A bug in which ${var op pattern} to not work when inside an
    	  arithmetic expression has been fixed.
    05-05-23 +An extension to shell patterns that allows matching of nested
    	  groups while skipping over quoted strings has been added.
    05-05-18  A bug in which the line number for errors was not correct for
              functions loaded from FPATH has been fixed.
    05-04-18  A bug in which the exit status $? is not set when a trap triggered
    	  by the [[...]] command is executed has been fixed.
    05-04-08 +Redirection operators can be directly preceded with {varname}
    	  with no intervening space, where varname is a variable name which
    	  allows the shell to select a file descriptor > 10 and store it
    	  into varname.
    05-04-08 +SHOPT_CMDLIB_BLTIN=1 now includes <cmdlist.h> generated table.
    05-04-07 +[[ -o ?option ]] is true if "option" is a supported option.
    05-04-05  A bug in handling file completion with spaces in the names
              has been fixed.
    05-03-25 +The SIGWINCH signal is caught by default to keeps the LINES and
    	  COLUMNS variables in sync with the actual window size.
    05-03-25 +Building ksh with SHOPT_REMOTE=1 causes ksh to set --rc if stdin is
    	  a socket (presumably part of a remote shell invocation.)
    05-03-25 +Building ksh with SHOPT_SYSRC=1 causes interactive ksh to source
    	  /etc/ksh.kshrc (if it exists) before sourcing the $ENV file.
    05-03-25 +{first..last[..incr][%fmt]} sequences added to brace expansions
    	  when braceexpand is enabled.
    05-03-03  A bug where a SIGCHLD interrupt could cause a fifo open to fail has
    	  been fixed.
    05-02-25  A bug in which a builtin command run in the background could
    	  keep a file descriptor open which could cause a foreground
    	  process to hang has been fixed.
    05-02-24  A bug where builtin library commands (e.g., date and TZ) failed to
    	  detect environment variable changes has been fixed.
    05-02-22 +The read builtin and word splitting are now consistent with respect
    	  to IFS -- both treat IFS as field delimiters.
    05-02-22 +The read builtin no longer strips off trailing delimiters that
    	  are not space characters when there are fewer variables than fields.
    05-02-17  A builtin bug on systems where dlsym(libcmd) returns link-time
    	  bindings has been fixed.
    05-02-12  A bug in which the lib_init() function for .paths BUILTIN_LIB
    	  libraries was not called has been fixed.
    05-02-06  A bug on some systems in which moving the write end of a co-process
    	  to a numbered file descriptor could cause it to close has been fixed.
    05-02-06  A bug in the vi-edit mode in which the character under the cursor
    	  was not deleted in some cases with the d% directive has been fixed.
    05-02-06  A bug where external builtin stdout/stderr redirection corrupted
              stdout has been fixed.
    05-02-04  A bug where times formatting assumed CLK_TCK==60 has been fixed.

    05-01-11  --- Release ksh93q  ---
    05-01-11  A bug in the integral divide by zero check has been fixed.
    05-01-11 +The -l option has been added to read /etc/profile and
    	  $HOME/.profile, if they exist, before the first command.
    05-01-11  An argument parsing bug that caused `kill -s x -- n' to fail has
    	  been fixed.
    05-01-11 +The .paths file, introduced in ksh93m, which can appear in
    	  any directory in PATH, now allows a line of the form 'BUILTIN_LIB=.'
    	  When a command is searched for this directory, and the full path
    	  matches the path of the built-in version of the command (listed
    	  by the 'builtin' command) then the built-in version of the command
    	  is used.  When ksh is built with SHOPT_CMDLIB_DIR=1 then all libcmd
    	  functions become builtins with the '/opt/ast/bin/' directory prefix.
    05-01-10  A bug in which a nameref to a compound name caused a core dump has
    	  been fixed.
    05-01-09  A bug in which some SIGCHLD interrupts (from child processes exiting)
    	  caused a fatal print/echo error diagnostic has been fixed.
    04-12-24  A bug in which some SIGCHLD interrupts (from child processes exiting)
              corrupted the internal process/job list, sometimes causing the shell
    	  to hang, has been fixed.
    04-12-01  A bug in which typeset -Fn truncated less than n digits for large
    	  numbers has been fixed.
    04-11-25  A bug in which standard error could be closed after a redirection
    	  to /dev/stderr has been fixed.
    04-11-17  A bug in which an expansion of the form ${array[@]:3} could expand
              to ${array[0]} when ${array[3]} was not set has been fixed.
    04-10-22 +The -E or -orc command line option reads ${ENV-$HOME/.kshrc} file.
    04-10-22 +`-o foo' equivalent to `+o nofoo', `-o nobar' equivalent to `+o bar'.
              `--foo' equivalent to `-o foo', `--nofoo' equivalent to `+o foo'
    04-10-05 +The .paths file, introduced in ksh93m, which can appear in
    	  any directory in PATH, now allows a line of the form
    	  'BUILTIN_LIB=libname'.  When a command is searched for this directory,
    	  the shared library named by libname will first be searched for a
    	  built-in version of the command.
    04-09-03  <<< here documents now handle quotes in the word token correctly.
    04-08-08 +The maximum size for read -n and and read -N was increased from
    	  4095 to 32M.
    04-08-04 +printf %q was modified so that if an no operand was supplied, no
    	  no output would be generated rather than a quoted empty string.
    04-08-01 +The -n and -N options of the read builtin has been modified
    	  when reading variables with the binary attribute so that the
    	  data is stored directly rather than through assignment.
    04-08-01 +The shcomp command has been modified to process alias commands
    	  under some conditions.
    04-07-31 +The .sh.match variable added in ksh93l, now works like other
    	  indexed arrays.
    04-07-08  A loop optimizer bug which occurs when typeset is used in
    	  a for or while loop inside a function has been fixed.
    04-06-24 +The number of subexpressions in a pattern was increased to 64
    	  from the current number of 20.
    04-06-17 +The -t option to read was modified to allow seconds to be
    	  specified as any arithmetic expression rather than just
    	  an integral number of seconds, for example even -t 'sin(.5)'
    	  is now valid.
    04-06-16  Two small memory leak problems were fixed.
    04-06-15  A bug in ${var/pattern/"string"} which occurred when string
    	  contained pattern matching characters has been fixed.
    04-05-08  printf $'%d produced an erroneous error message and has
    	  been fixed.
    04-05-24  A bug in which an associative array without any elements could
    	  cause a core dump when a script with an associative array with
    	  the same name was declared in a script invoked by name has
    	  been fixed.
    04-05-11  A bug in which an exec statement could close the script that
    	  is being processed in a script that is run by name causing
    	  a failure has been fixed.
    04-04-28 +If the first character of assignment to an integer variable was 0,
              the variable had been treated as unsigned.  This behavior was
              undocumented and has been removed.
    04-04-05  A bug in which the positioning of standard input could be incorrect
    	  after reading from standard input from a subshell has been fixed.
    04-03-30  A bug in the for loop optimizer which in rare cases could cause
    	  memory corruption has been fixed.
    04-03-29 +The preset alias source='command .' has been added.
    04-03-29  A bug introduced in ksh93p on some systems in which invoked by
    	  name with #! on the first line would not get the signals handling
    	  initialized correctly has been fixed.
    04-03-29  A bug introduced in ksh93p in which a HUP signal received by
    	  a shell that is a session group leader was not passed down to
    	  its children has been fixed.

    04-02-28  --- Release ksh93p  ---
    04-02-28 +The ability to apply an append discipline to any variable has
    	  been added.
    04-02-14  A bug in which the exportall option (set -a) would cause incorrect
    	  results for arrays has been fixed.
    04-02-02  A bug in which an exported array would pass more than
    	  the first element to a script invoked by name has been fixed.
    04-02-02  A bug on some systems in which name=value pairs preceding a script
    	  invoked by name was not getting passed to the script has been fixed.
    04-01-20  A bug in which an unset discipline function could cause a core
    	  dump on some systems has been fixed.
    04-01-12  A bug in which a continue or break called outside a loop from
    	  inside a function defined with name() syntax could affect
    	  the invoking function has been fixed.
    04-01-08  If a command name begins with ~, only filename completion will be
    	  attempted rather than pathname completion using the builtin editors.
    04-01-08  A bug in the vi edit mode in which the wrong repeat count on
    	  multiple word replacements with the . directive has been fixed.
    04-01-06  Backspace characters are now handled correctly in prompt strings.
    04-01-06 +The getopts builtin has been modified to accept numerical
    	  arguments of size long long on systems that support this.
    04-01-06  A bug in which unsetting all elements of an associative array
    	  would cause it to be treated as an indexed array has been fixed.
    03-12-15  A bug in which a quoted string ending with an unescaped $ would
    	  delete the ending $ in certain cases has been fixed.
    03-12-05  A bug in which the shell could hang when set -x tracing a command
    	  when an invalid multibyte character is encountered has been fixed.
    03-12-05  On some systems, if the KEYBD trap is set, then commands that use
    	  the meta key were not processed until return was hit.  This
    	  has been fixed.
    03-12-05  A problem which occurred when the login shell was not a group
    	  leader that could cause it to fail has been fixed.
    03-12-05  A problem in which a shell could core dump after receiving a signal
    	  that should cause it to terminate while it was in the process
    	  of acquiring more space has been fixed.
    03-12-05 +If ENV is not specified, the shell will default to $HOME/.kshrc
    	  for interactive shells.
    03-11-21  A bug introduced in ksh93o in which the DEBUG trap could get
    	  disabled after it triggered has been fixed.
    03-11-04  A bug in which using arithmetic prefix operators ++ or -- on a
    	  non-lvalue could cause a core dump has been fixed.
    03-11-04  A bug in which leading zeros were stripped from variable
    	  expansions within arithmetic computation to avoid being treated
    	  as octal constants when they should not have, has been fixed.
    03-10-08  A bug introduced in ksh93o in which a large here document inside
    	  a function definition could get corrupted has been fixed.
    03-09-22  A bug in which the .get discipline function was not being
    	  called when a string variable was implicitly referenced from
    	  within a numerical expression has been fixed.
    03-09-22  A bug in which a script without a leading #! could get executed
    	  by /bin/sh rather than the current shell on some systems has
    	  been fixed.
    03-09-12 +To improve conformance with ksh88, leading zeros will be ignored
    	  when getting the numerical value of a string variable so that
    	  they will not be treated as octal constants.
    03-09-03 +The builtin kill command now processes obsolete invocations
    	  such as kill -1 -pid.
    03-09-02  The restriction on modifying FPATH in a restricted shell (sh -r)
    	  has been documented.
    03-09-02 +The restricted shell (sh -r) has been modified to disallow
    	  executing command -p.
    03-08-07  A bug in which the KEYBD trap was not being invoked when
    	  characters with the 8th bit set has been fixed.
    03-08-02  A parser bug introduced in ksh93o which caused the character
    	  after () in a Posix function definition to be skipped
    	  when reading from standard input has been fixed.
    03-08-01  A bug in which "${foo#pattern}(x)" treated (x) as if it were
    	  part of the pattern has been fixed.
    03-08-01 +The command -x option has been modified so that any trailing
    	  arguments that do expand to a single word will be included
    	  on each invocation, so that commands like command -x mv * dir
    	  work as expected.

    03-07-20  --- Release ksh93o+  ---
    03-07-20  A bug in which could cause memory corruption when a posix
    	  function invoked another one has been fixed.
    03-07-15  A bug in which a file descriptor>2 could be closed before
    	  executing a script has been fixed.
    03-07-15  A parsing error for <() and >() process substitutions inside
    	  command substitution has been fixed.
    03-07-15  A parsing error for patterns of the form {...}(...) when
    	  used inside ${...} has been fixed.
    03-07-15  An error in which expanding an indexed array inside a compound
    	  variable could cause a core dump has been fixed.
    03-07-15  A bug in which on rare occasions a job completion interrupt
    	  could cause to core dump has been fixed.
    03-06-26  A bug in which process substitution embedded within command
    	  substitution would generate a syntax error has been fixed.
    03-96-23  A bug in which ${@:offset:len} could core dump when there
    	  were no arguments has been fixed.
    03-96-23  A bug in which ${X[@]:offset:len} could core dump when X
    	  was unset has been fixed.
    03-06-22 +The -x option was added to the command builtin.  If this
    	  option is on, and the number of arguments would exceed ARG_MAX,
    	  the command will be invoked multiple times with a subset of
    	  the arguments.  For example, with alias grep='command -x grep,
    	  any number of arguments can be specified.
    03-06-14  A bug in which could cause a core dump on some systems with
    	  vi and emacs editors with the MULTIBYTE option has been fixed.
    03-06-06  A bug in which the shell could core dump when a script was
    	  run from its directory, and the script name a symlink to a file
    	  beginning with .., has been fixed.
    03-06-05  A bug in which the shell could core dump when a child process
    	  that it is unaware of terminates while it is calling malloc()
    	  has been fixed.
    03-06-02 +An option named globstar (set -G) has been added.  When enabled,
    	  during pathname expansion, any component that consists only of ** is
    	  matches all files and any number of directory levels.
    03-05-30  A bug in which the PATH search could give incorrect results when
    	  run from directory foo and PATH contained .:foo:xxx has been fixed.
    03-05-29 +Some changes were made to the code that displays the prompt in edit
    	  mode to better handle escape sequences in the prompt.
    03-05-27  I added = to the list of characters that mark the beginning of
    	  a word for edit completion so that filenames in assignments
    	  can be completed.
    03-05-20  A bug in which read -N could hang on some systems when reading
    	  from a terminal or a pipe has been fixed.
    03-05-19  A bug in which the output of uname from a command substitution
    	  would go to the standard output of the invoking command when
    	  uname was invoked with a non-standard option has been fixed.
    03-05-19  A job control bug which would cause the shell to exit because
    	  it hadn't take back the terminal has been fixed.  The bug
    	  could occur when running a function that contained a pipeline
    	  whose last element was a function.
    03-05-19  A job control timing bug introduced in ksh93o on some systems
    	  which could cause a pipeline to hang if the first component
    	  completed quickly has been fixed.
    03-05-13 +The read builtin has been modified so that the builtin editors
    	  will not overwrite output from a previous incomplete line.
    03-05-13  A bug in which the name of an identifier could have the string
    	  .sh. prefixed to it after expanding a variable whose name begins
    	  with .sh. has been fixed.
    03-05-13  A bug in the expansion of $var for compound variables in which
    	  some elements would not be output when the name was a prefix
    	  of another name in the compound variable has been fixed.
    03-05-08  The last item in the ksh93o release on 03-01-02 has been
    	  altered slightly to preserve the leading 0's when the
    	  preceding character is a digit.  Thus, with typeset -LZ3 x=10,
    	  $(( 1$x)) will be 1010 whereas $(( $x) will be 10.
    03-04-25  A bug in which if x is a name reference, then nameref y=x.foo
    	  did not follow x has been fixed.

    03-03-18  --- Release ksh93o  ---
    03-03-18 +A -N unary operator was added to test and [[...]] which returns
    	  true if the file exists and the file has been modified since it
    	  was last read.
    03-03-18 +The TIMEFORMAT variable was added to control the format for
    	  the time compound command.  The formatting description is
    	  described in the man page.
    03-03-06 +A -N n option was added to read which causes exactly n bytes
    	  to be read unlike -n n which causes at most n bytes to be read.
    03-03-03 +Three new shell variables were added.  The variable .sh.file
    	  stores the full pathname of the file that the current command
    	  was found in.  The variable .sh.fun names the current function
    	  that is running.  The variable .sh.subshell contains the depth
    	  of the current subshell or command substitution.
    03-03-03 +When the DEBUG trap is executed, the current command line after
    	  expansions is placed in the variable .sh.command.  The trap
    	  is also now triggered before each iteration of a for, select,
    	  and case command and before each assignment and redirection.
    03-02-28 +Function definitions are no longer stored in the history file so
    	  that set -o nolog no longer has any meaning.
    03-02-28 +All function definitions can be displayed with typeset -f not
    	  just those stored in the history file.  In addition, typeset +f
    	  displays the function name followed by a comment containing the
    	  line number and the path name for the file that defined this function.
    03-02-28  A bug in which the value of $LINENO was not correct when executing
    	  command contained inside mult-line command substitutions has been
    	  fixed.
    03-02-19 +Since some existing ksh88 scripts use the undocumented and
    	  unintended ability to insert a : in front of the % and # parameter
    	  expansion operators, ksh93 was modified to accept :% as equivalent
    	  to % and :# as equivalent to # with ${name op word}.
    03-02-14  A bug which could cause a core dump when reading from standard
    	  error when standard error was a pty has been fixed.
    03-02-14 +The shell arithmetic was modified to use long double on systems
    	  that provide this data type.
    03-02-09  A bug in which a function located in the first directory in FPATH
    	  would not be found when the last component of PATH was . and the
    	  current directory was one of the directories in PATH has been fixed.
    03-02-07 +The trap and kill builtin commands now accept a leading SIG prefix
    	  on the signal names as documented.
    03-02-05  A bug in the expansion of ${var/$pattern}, when pattern contained
    	  \[ has been fixed.
    03-02-05  A bug in which .sh.match[n], n>0, was not being set for substring
    	  matches with % and %% has been fixed.
    03-01-15  A bug in which getopts did not work for numerical arguments specified
    	  as n#var in the getopts string has been fixed.
    03-01-09  A bug in which using ${.sh.match} multiple times could lead to
    	  a memory exception has been fixed.
    03-01-06  A bug in the expansion of ${var/pattern/$string} in the case that
    	  $string contains \digit has been fixed.
    03-01-02 +A -P option was added for systems such as Solaris 8 that support
    	  profile shell.
    03-01-02  For backward compatibility with ksh88, arithmetic expansion
    	  with ((...)) and let has been modified so that if x is a zero-filled
    	  variable, $x will not be treated as an octal constant.

    02-12-05  --- Release ksh93n+  ---
    02-11-30  A bug that can show up in evaluating arithmetic statements that
    	  are in an autoloaded function when the function is autoload from
    	  another function has been fixed.
    02-11-30  An optimization bug in which an expansion of the form ${!name.@},
    	  which occurred inside a for or a while loop, when name is a name
    	  reference, has been fixed.
    02-11-18  A bug in which modifying array variables in a subshell could leave
    	  side effects in the parent shell environment has been fixed.
    02-11-18  A memory leak when unsetting an associative array has been fixed.
    02-11-14 +The code to display compound objects was rewritten to make
    	  it easier for runtime extensions to reuse this code.
    02-11-14 +A change was made to allow runtime builtins to be notified when
    	  a signal is received so that cleanup can be performed.
    02-10-31 +User applications can now trap the ALRM signal.  Previously,
    	  the ALRM signal was used internally and could not be used
    	  by applications.
    02-10-31  A bug in which signals received while reading from a coprocess
    	  for which traps were set was not handled correctly has been fixed.
    02-10-31  A bug in which a file opened with exec inside a subshell could
    	  be closed before the subshell completed has been fixed.
    02-10-21  A bug in which setting PATH or FPATH inside a function might not
    	  take effect has been fixed.
    02-10-21  A bug which could cause a core dump when a local SECONDS variable
    	  is defined in a function has been fixed.
    02-10-15  A bug in which the associate array name operator ${!array[@]}
    	  could return the same name multiple times has been fixed.
    02-10-15  A bug in which the zero'th element of an associative array was
    	  not getting set when an assignment was made without a subscript
    	  specified has been fixed.

    02-09-30  --- Release ksh93n  ---
    02-09-30 +The maximum indexed array size was increased to 16Megs.
    02-09-30  A bug which could cause a core dump when changing attributes
    	  of associative array has been fixed.
    02-09-30  A bug in which exporting an array variable would not export the
    	  0-th element has been fixed.
    02-09-30  A bug in which an array assignment of the form a=($a ...) would unset
    	  'a' before the right hand side was evaluated has been fixed.
    02-09-27  A bug in which the error message for ${var?message} when var was
    	  null or unset did not contain the variable name var has been fixed.
    02-09-27  A bug in which closing file descriptors 0 through 2 could
    	  cause a subsequent here document to fail has been fixed.
    02-09-14  A bug in whence which occurs when the specified name contained
    	  a / has been fixed.
    02-09-14  A bug in the parser for strings of the form name$((expr))=value
    	  has been fixed.
    02-09-14  A for loop optimization bug in which the number of elements in
    	  an array was treated as an invariant has been fixed.
    02-09-09  A bug in which redirection or closing of a file descriptor between
    	  3 and 9 could cause a subsequent here document to fail has been
    	  fixed.
    02-09-09  A bug in which a background job was not removed from the job list
    	  when a subshell completed has been fixed, for example (prog&).
    02-09-03  A bug in which an assignment of the form name=(integer x=3)
    	  could be interpreted as an array assignment rather than a
    	  compound variable assignment has been fixed.
    02-08-19  A command completion bug which occurred on file systems that
    	  are case insensitive has been fixed.
    02-08-19  A bug which could lead to an exception on some systems (for
    	  example FREEBSD) which occurred when setting PATH has been fixed.
    02-08-11  A bug in arithmetic rounding in which a value input as a decimal
    	  string would output as a rounded version of the string has
    	  been fixed.
    02-08-11  A bug in which the last character could be deleted from shell
    	  traces and from whence when called from a multibyte locale
    	  has been fixed.
    02-08-01  A bug which could cause a core dump to occur when a shell script
    	  is executed while a coprocess is running that has closed the
    	  output pipe has been fixed.
    02-08-01  A bug in which command completion in multibyte mode could
    	  corrupt memory for long command lines has been fixed.

    02-06-17  --- Release ksh93n-  ---
    02-06-17  A bug in which user defined macros could cause a core dump in
    	  with MULTIBYTE mode has been fixed.
    02-06-17  A bug in which printf format specifiers of the form %2$s were causing
    	  a core dump has been fixed.
    02-06-17  A bug in which setting stty to noecho mode did not prevent the
    	  echoing of characters by ksh when emacs or viraw mode
    	  was enabled has been fixed.
    02-06-17  A bug in which background job completion could cause the sleep
    	  builtin to terminate prematurely has been fixed.
    02-06-17  A bug in which the shell could core dump if getopts was called
    	  when the OPTIND variable contained a negative value has been fixed.
    02-06-10 +The edit mode prompt has been modified to handle escape sequences.
    02-06-10  A bug which occurred for interactive shells in which the builtin
    	  cat command was used in command substitution on a file whose
    	  size was larger than PIPE_BUF has been fixed.
    02-06-10  A bug in which the trap on ERR was not being processed when
    	  set inside a function has been fixed.
    02-06-07  A bug in which function definitions could cause the history count
    	  to be decremented by one (and even become negative) has been fixed.
    02-06-05  A bug in read in which share mode could be enabled has been fixed.
    02-05-28  A bug which could occur when the last command of a script was
    	  a case statement and the action selected ended in ;& instead of ;;
    	  has been fixed.
    02-05-23  A bug with unary + introduced in ksh93k has been fixed.
    02-05-07  A bug in substitutions of the form ${var/pattern/string} in which
    	  a backslash was inserted in the replacement string when it contained
    	  a special pattern character has been fixed.
    02-05-01  A bug in the emacs edit mode which occurred in versions compiled
    	  for multibyte character sets which occurred when a repeated search
    	  was requested after a long line had been returned for the previous
    	  search has been fixed.
    02-04-02 +vi and emacs edit modes were modified so that tab completion is
    	  disabled when invoked from the read built-in.

    02-03-26  --- Release ksh93m+  ---
    02-03-26  A bug in which  was not handled correctly when used in file
    	  expansion has been fixed.
    02-02-18  A bug in which lines beginning with a # were deleted from here
    	  documents when the here-document delimiter was followed by
    	  a comment has been fixed.
    02-12-06  An optimization bug in which ${!x[@]) was treated as invariant in
    	  a for loop has been fixed.
    02-02-06  A bug in which the ERR trap is not cleared for a script invoked
    	  by name from within a function has been fixed.
    02-01-08  A bug in which a shell script executed from within a subshell
    	  could cause this script to have an invalid pointer leading
    	  to a memory fault has been fixed.
    02-01-07 +Added here documents of the form <<< word (as per zsh) which
    	  is equivalent to << delimordelim.
    02-01-07  A bug in which the first word of a compound assignment,
    	  x=(word ...), was treated as a reserved word has been fixed.
    02-01-07  A bug in the handling of  when noglob was enabled and a
    	  substitution of the form ${word op pattern} occurred in the
    	  same word has been fixed.
    02-01-07 +A compilation option, CMDLIB_BLTIN in the file OPTION, has
    	  been added.  When this options is set, all commands implemented
    	  in libcmd become shell builtin commands by default.
    02-01-07  A bug in which builtin foo, where foo is already a builtin
    	  would result in the builtin foo getting removed has been fixed.
    02-01-07  A bug which the shell executed a command found in the current
    	  directory when PATH have no valid directories has been fixed.
    01-11-28  The value of $? was not being set when called with exit.
    01-11-28  If the last command was of the form (...) and a trap on EXIT or
    	  ERR was set, and the command inside () modified the trap, then
    	  the original trap wasn't executed.
    01-11-26 +The value for 0 is now preceded by the base number when
    	  the base was not 10.
    01-11-26 +The default has compilation mode has been changes so that
    	  viraw mode will always be on.

    01-10-31  --- Release ksh93m  ---
    01-10-31  A for loop optimizer bug for subshells contained withing for
    	  loops has been fixed.
    01-10-16  typeset without arguments no longer outputs variable names
    	  that do not have any attributes that are set.
    01-10-16  A bug introduced in ksh93l in which assignments specified with
    	  the exec built-in were not being expanded properly has been
    	  fixed.
    01-10-11  An optimization bug in which ${!x) was treated as invariant in
    	  a for loop has been fixed.
    01-10-11  Unsigned integer variables in bases other than 10 are printed now
    	  expand in that base with the base prefix.
    01-10-10  A number of typos in the self generating man pages for shell
    	  built-ins have been fixed.
    01-10-04  The self generated man pages for hist and fc were not working
    	  correctly and have been fixed.
    01-10-03  Yet another optimizer bug in which shell patterns were
    	  treated as invariants has been fixed.
    01-09-27  Two bugs relating to multibyte history searches and to find
    	  have been fixed.
    01-09-27  A bug introduced in ksh93k in which the PATH searching was
    	  not restored after running a command with an assignment list
    	  has been fixed.
    01-09-26  A bug in which a zero filled field was treated as octal when
    	  converted to integer has been fixed.
    01-09-26  Yet another bug in the optimization of for loops related to
    	  recursive functions with break or continue statements has been fixed.
    01-09-25 +The exponentiation operator ** was added to the shell arithmetic
    	  evaluation.  It has higher precedence than * and is left
    	  associative.
    01-09-25  The code was modified to use the ast multibyte macros
    	  and functions for handing multibyte locales.
    01-09-25 +The expansion ${parameter:offset:length} now handles negative
    	  offsets which cause offsets to be measured from the end.
    01-09-25  Some spelling errors in the documentation were corrected.
    01-09-24 +The /dev/tcp/host/port and /dev/udp/host/port now allow
    	  the ports to be specified by service name.
    01-09-24 +The change staring with ksh93g in which the the appropriate
    	  library path variable is prepended with a corresponding library
    	  directory has been modified.  With the new method, only the
    	  library path defined in the file named .paths in the directory
    	  where the executable is found will be modified.  See the
    	  man page for more details.
    01-09-23 +The .fpath file (see ksh93h) is no longer looked for in each
    	  directory on the path to locate function directories.  The
    	  file named .paths is used instead.
    01-09-23  A bug in which IFS was not being restored after being changed in
    	  a subshell has been fixed.
    01-09-16 +With the vi and emacs edit modes, after a list of command
    	  or functions is generated with = or M-= respectively,
    	  any element from the list can be pasted on the command line
    	  by preceding the = or M-= with a numeric parameter specifying
    	  the position on the list.
    01-09-16  A bug in ksh93l caused command completion not to find aliases
    	  and functions.  Command listing from the edit mode was presented
    	  in reverse order.  This has been fixed.
    01-09-13  Another bug in the optimization of for loops related to subshells
    	  when traps were set has been fixed.
    01-09-07  A change in ksh93l caused brace expansion to stop working
    	  and this has been fixed.
    01-09-04  A bug introduced in ksh93k in which an arithmetic statement
    	  within a function that used name references did not follow the
    	  reference has been fixed.
    01-09-04  A bug introduced in ksh93l in which export -p did not prefix
    	  each export with the word export has been fixed.
    01-08-29  A bug in multibyte input which occurred when a partial multibyte
    	  character was received has been fixed.
    01-08-29  A bug introduced in ksh93l which could cause a core dump
    	  when an assignment list containing PATH is specified inside
    	  command substitution has been fixed.
    01-08-09  Another bug in the optimization of for loops in ksh93l caused
    	  errors in recursive functions using local variables that
    	  contained for loops has been fixed.
    01-07-27  A bug in which IFS would be unset after a command substitution
    	  inside a here document has been fixed.
    01-07-26  To conform to the POSIX standard, if you invoked ksh name,
    	  and name does not contain a /,  it will first try to run
    	  one in the current directory whether it is executable or not
    	  before doing a path search for an executable script.  Earlier
    	  versions first checked for an executable script using the
    	  PATH variable.
    01-07-23  A bug in which unset -f invoked in a subshell could unset a
    	  function defined in the parent has been fixed.
    01-07-16  A bug in the optimization of for loops in ksh93l caused
    	  name references to be treated as invariants has been fixed.
    01-07-09  A bug in which a discipline function applied to a local variable
    	  could cause a shell exception has been fixed.  Discipline
    	  functions can only be specified for global variables.

    01-06-18  --- Release ksh93l  ---
    01-06-18  A bug in assigning integers larger than can be represented as
    	  long integers to floating point variables has been fixed.
    01-06-18  A bug in the handling of unsigned integers (typeset -ui) has
    	  been fixed.
    01-06-04  The evaluation of the PS1 prompt no longer effects the value
    	  of the $? variable.
    01-06-01  A small memory leak from subshells has been fixed.
    01-05-22  A bug in which attributes for variables that did not have
    	  values would be lost after a subshell has been fixed.
    01-05-22 +The %R format has been added to convert a shell pattern into
    	  an extended regular expression.
    01-05-22 +The escape sequences \, X, \C[.collating-element.], and
    	  \x{hex} have been added to ASCII-C strings and to printf format
    	  strings.
    01-05-20 +Patterns of the form {n}(pattern) and {m,n}(pattern) are now
    	  recognized.  The first form matches exactly n of pattern whereas,
    	  the second form matches from m to n instances of pattern.
    01-05-20 +The shell allows *-(pattern), +-(pattern),  ?-(pattern),
    	  {m,n}-(pattern}, and @-(pattern) to cause the minimal
    	  match of pattern to be selected whenever possible rather
    	  than the maximal (greedy) match.
    01-05-20 +The character class [:word:] has been added to patterns.
    	  The word class is the union of [:alnum:] and the character _.
    01-05-20 +Inside (...) pattern groups, the  character is now treated
    	  specially even when in an enclosing character class.  The
    	  sequences, \w, \d, \s are equivalent to the character classes
    	  word, digit, and space respectively.  The sequences \W, \D,
    	  and \S are their complement sets.
    01-05-20 +The shell now recognizes pattern groups of the form
    	  ~(options:pattern) where options or :pattern can be omitted.
    	  Options use the letters + and - to enable and disable options
    	  respectively.  The option letters g (greedy), i (ignore case)
    	  are used to cause maximal matching and to cause case
    	  insensitive matching respectively.  If :pattern is also
    	  specified, these options are only in effect while this
    	  pattern is being processed.  Otherwise, these options remain
    	  in effect until the end of the pattern group that they are contained
    	  in or until another ~(...) is encountered.  These pattern groups
    	  are not counted with respect to group numbering.
    01-05-14  When edit completion, expansion, or listing occurs in the
    	  middle of a quoted string, the leading quote is ignored when
    	  performing the completion, expansion, or listing.
    01-05-14  A small memory leak from subshells has been fixed.
    01-05-10  A bug in which open files were not restored after a subshell
    	  that had used exec to replace a file has been fixed.
    01-05-10 +Redirection to a null file name now generates an error message.
    01-05-09  The shell now rejects some invalid parameter substitutions that
    	  were previously processed in undefined ways.
    01-05-09  A bug in which the output of select was not flushed before the
    	  read when input did not come from the terminal has been fixed.
    01-05-08  A bug in which job ids would not be freed for interactive shells
    	  when subshells ran built-ins in the background has been fixed.
    01-05-08 +The FPATH variable now requires an explicit . to cause the
    	  current directory to be treated as a function directory.
    01-05-08  A bug in read -n when echo mode was disabled has been fixed.
    01-05-07  A bug in which function definitions could be listed as part
    	  of the history has been fixed.
    01-04-30 +This release uses a new and often much faster pattern matcher than
    	  earlier releases.
    01-04-30 +An optimizer now eliminates invariant parameter expansions from
    	  for while and until loops.
    01-04-30 +The variable .sh.match is set after each pattern match (# % or /)
    	  in a variable substitution.  The variable .sh.match is an
    	  indexed array with element 0 being the complete match.
    	  The array is only valid until the next subsequent pattern
    	  match or until the value of the variable changes which ever
    	  comes first.
    01-04-30 +A self generating man page has been added to shcomp.  Also,
    	  shcomp now stops compiling when it finds an exit or exec
    	  command and copies the remainder so that it can be used
    	  for standard input.
    01-04-30 +The shcomp command was modified so that it can work in an
    	  EBCIDIC environment and that binary scripts are portable
    	  across environments.
    01-04-30  A bug in the handling of a trailing : in PATH has been fixed.
    01-04-30  A bug in which the builtin version of a command would get invoked
    	  even though the full pathname for the command was specified
    	  has been fixed.
    01-04-30  A bug in which read would loose the last character when
    	  reading the last line of a file that did not contain a new-line
    	  character has been fixed.
    01-04-23  A bug on some systems in which in vi mode the end of file
    	  character and end of line character could be swapped has
    	  been fixed.
    01-04-23  A bug on some systems in which invoking a shell script that
    	  did not have execute permission could set the exit value to
    	  127 rather than 126 has been fixed.
    01-04-20  A bug in which read -n from a pipe would block if fewer than
    	  n characters was received has been fixed.
    01-04-09  A bug in which invalid patterns, for example, ) by itself,
    	  was not treated as a string has been fixed so that if i=')',
    	  then [[ $i == $i ]] is true.
    01-04-09 +The shell arithmetic now interprets C character constants.
    01-04-09  A bug in which a non-zero return from a function defined
    	  with the function reserved word did not trigger the ERR
    	  trap or exit with set -e has been fixed.
    01-04-02  A bug on some systems, in which characters above 127 were
    	  not displayed correctly in vi or emacs edit mode has been fixed.
    01-04-02  A bug on some systems, introduced in the 'k' point release, in
    	  which the erase character in viraw mode was moving the cursor
    	  to the left without erasing the character has been fixed.
    01-04-02  On some systems the wcwith() function was returning a wrong
    	  value for characters and caused characters to be displayed
    	  incorrectly from the shell edit modes.  A work around for
    	  this problem has been added.
    01-03-26  A bug in which valid scripts could produce syntax errors
    	  when run with locales that considered characters such as "'"
    	  to be space characters has been fixed.
    01-03-20  A bug in which an syntax error in an arithmetic expression
    	  entered interactively could cause the shell to go into
    	  an infinite loop outputting the error message has been fixed.
    01-03-10 +ksh93 accepts -l as a synonym for -L in test on systems for
    	  which /bin/test -l tests for symbolic links.
    01-03-10  A bug in parsing scripts in which { and } are used in place of
    	  in and esac in case statements embedded in compound commands
    	  has been fixed.  Use of { and } for in and esac is obsolete.
    01-03-06  A bug in which an argument of the form foo=bar was not
    	  being passed correctly to a traced function whose name
    	  was foo has been fixed.
    01-03-02  Using $(trap -p name) did not print the name of the current
    	  trap setting for trap name.
    01-02-26  Exported floating point variables gave incorrect results
    	  when passing them to ksh88.  This has been fixed.
    01-02-25  A race condition in which a coprocess which completed too quickly
    	  would not allow subsequent coprocesses to start has been fixed.
    01-02-25  The 'g' format specifier is now handled by printf.  It had
    	  inadvertently been omitted.
    01-02-20  The + was not being displayed during an execution trace
    	  with the += assignment operator.
    01-02-19  The error message which occurs when the interpreter name
    	  defined on the #! line does not exist is more informative.
    01-02-19  A bug in which $0 would not be set correctly when a
    	  script with #! was invoked by full pathname from the
    	  directory of the script has been fixed.
    01-02-19  A shell script did not always pick up tty mode changes
    	  made by external commands such as stty which could
    	  effect the behavior of read.
    01-02-19  The -u, -g, and -k unary tests did not give the correct
    	  results when used with negation and this has been fixed.

    01-02-05  --- Release ksh93k+  ---
    01-02-05  The sequence \<newline> inside $'...' was not incrementing
    	  the line count and this has been fixed.
    01-02-05 +Modified expansion of "${@-}" so that if no arguments are set
    	  it results in null string rather than nothing.
    01-02-02  memory leak problem with local variables in functions fixed.
    01-01-25 +allow arithmetic expressions with float%int and treat them
    	  as ((int)float)%int rather than as an error.
    01-01-19  read -n1 was not working and has been fixed.
    01-01-17 +ksh now handles the case in which a here document in command
    	  substitution $() is terminated by the trailing ).  Previously,
    	  a new-line was needed at the end of the delimiter word.
    01-01-02  A bug in which a KEYBD trap would cause a multi-line token
    	  to be processed incorrectly has been fixed.
    00-12-10 +Arithmetic integer constants can now have L and U suffices.
    00-12-10  A bug in the processing of arithmetic expressions with compound
    	  variables when the -n option is on has been fixed.
    00-12-08  A bug in M-f and M-b from emacs mode has been fixed.  This
    	  bug only occurs when ksh93 is compiled without MULTIBYTE enabled.
    00-11-29  A bug in which jobs -p would yield 0 for background
    	  jobs run in a script has been fixed.
    00-11-21  A bug in integer arrays in which the number of elements is
    	  incorrect when the ++ operator is applied to a non-existing
    	  element has been fixed.  For example, integer x; ((x[3]++)).
    00-11-20  A timing bug in which the shell could reset the terminal
    	  group to the wrong value in the case that the a new process
    	  changes the terminal group during startup has been fixed.

    00-10-27  --- Release ksh93k  ---
    00-10-27  Using tab for completion now works only when applied
    	  after a non-blank character at the end of the current line.
    	  In other case a tab is inserted.
    00-10-27  A bug in the emacs edit mode for ^X^E has been fixed.
    	  The ^X^E sequence is supposed to invoke the full editor
    	  on the current command.
    00-10-18  A bug in which expansions of the form ${var//pattern/string}
    	  did not work correctly when pattern was '/' or "/" has
    	  been fixed.
    00-10-18 +The output format for indexed arrays in compound variables
    	  has been modified so that it can be used as input.
    00-10-18  Assignments with name references (typeset -n) will now
    	  implicitly unreference an existing name reference.
    00-10-17  A bug the += append operator when a single array element
    	  is appended to a variable that is not an array has been fixed.
    00-10-16  A bug in which the SIGCONT signal was being sent to
    	  each process will kill -0 or kill -n 0 has been fixed.
    00-10-12 +The arithmetic evaluation portion has been rewritten to
    	  perform a number of optimizations.
    00-10-10  A bug in which name prefix matching ${!name.*} was not
    	  checking name to see if it was a name reference has been fixed.
    00-09-26  A bug in the multibyte version in which the width of for
    	  non-printing characters was not correct has been fixed.
    00-09-12 +Made changes to get multibyte editing work on UWIN for windows
    00-09-12  A bug in which multibyte characters would be displayed incorrectly
    	  has been fixed.
    00-08-08  Removed build dependency on iswprint() and iswalph().
    00-07-20  In some cases the read builtin would read more than a single
    	  line from a pipe on standard input and therefore leave the seek
    	  position in the wrong location.
    00-07-05 +If the directory / is on the path, a / will not be inserted
    	  between the directory and the file name during path searching
    	  to avoid searching // for systems that treat this specially.
    00-06-26  A bug in which on rare occasions wait could return before all
    	  jobs have completed has been fixed.
    00-06-21  A bug in which backspace did not work correctly during the
    	  R replace directive in vi-mode has been fixed.
    00-06-12 +Added variable name completion/expansion/listing  to the set of
    	  completions.  Variable name completions begin with $ or "$ followed
    	  by a letter.
    00-05-09  --- Release ksh93j  ---
    00-05-09  Modified command substitution to avoid using /tmp files when
              run on read-only file systems.
    00-04-17 +Modified printf to handle '%..Xc' and '%..Xs' options where X
    	  is not an alpha character.  Previous versions core dumped with this.
    00-04-10 +Changes to multibyte editing code were made to use standard
    	  ISO C functions rather than methods devised before the standard.
    00-04-09  Add %H options to printf to output strings with <"'&\t> properly
    	  converted for use in HTML and XML documents.
    00-04-07 +Modified getopts builtin to handle <.>..< >in usage string
    	  by invoking specified function.
    00-04-04  Added self generating man pages for bg, fc, fg, disown, jobs,
    	  hist, let, ., and ulimit.
    00-03-30 +The append operator += has been added and can be used
    	  for all assignments, strings, arrays, and compound variables.
    00-03-30 +Code was modified in several places to support automatic
    	  generation of C locale dictionaries.
    00-03-28  A bug in which the set and trap commands invoked with --name
    	  type arguments would terminate the invoking script  has
    	  been fixed.
    00-03-27  A bug in which the library path variable was not updated
    	  correctly on some systems as described in the 'g' point
    	  release has been fixed.
    00-03-07  printf now returns a non-zero exit status when one of
              its arguments cannot be converted to the given type.
    00-03-05  The return value and error message for a command that
              was found on the path but was not executable was set
              incorrectly.
    00-03-05  A prototype for ioctl() was removed from the vi edit mode.

    00-01-28  --- Release ksh93i  ---
    00-01-28 +Most of the built-in commands and ksh itself are now
              self documenting.  Running command --man will produce
              screen output.  Running command --html produces the
              man page in html format.
    00-01-28 +The getopts builtin can process command description
              strings to produce man pages.
    00-01-28  A bug in which a script could terminate when getopts
              encountered an error when invoked inside a function
              has been fixed.
    00-01-28  When a symbolic link was specified as the name of
              the script to invoke by name, the value of $0 was
              set to the real file name rather than the link name
              in some cases and this has been fixed.
    00-01-28  A bug in which the precision given as an argument
    	  to printf was not working has been fixed.

    99-03-31  --- Release ksh93h  ---
    99-03-31 +The PATH search algorithm has been modified to look
    	  for a file named .fpath in each bin directory and if
    	  found, to search for functions in this directory if
    	  it cannot find the command in that directory.
    99-03-31 +When performing pathname expansion, the shell checks
    	  to see whether each directory it reads is case sensitive
    	  or not, and performs the matching accordingly.
    99-03-31 +The %T format for printing formatted date/time.
    99-03-31 +The emacs and vi modes now handle arrow keys when
              they use standard ANSI escape sequences.
    99-03-31 +The TAB key can be used for completion in emacs and viraw mode.
    99-03-31  A bug in setting .sh.editchar during the KEYBD trap
    	  for the MULTIBYTE option was fixed in release ksh93h.
    99-03-31  A bug in shcomp for compilation of unary operators with [[...]]
    	  has been fixed.
    99-03-31  A bug in which the value of $? was changed when executing
    	  a keyboard trap has been fixed.
    99-03-31  The handling of SIGCHLD has been changed so that the
    	  trap is not triggered while executing trap commands
    	  to avoid recursive trap calls.
    99-03-31  A bug in which a local variable in a function declared readonly
    	  would generated an error when the function went out of
    	  scope has been fixed.
    99-03-31  A bug in which \<new_line> entered from the keyboard
    	  with the KEYBD trap enabled has been fixed.
    99-03-31  The error message for a misplaced ((, for example print ((3),
    	  was often garbled and has been fixed.
    99-03-31  A bug in the KEYBD trap in which escape sequences of the form
    	  <ESC>[#~ were not being handled as a unit has been fixed.
    99-03-31  A bug in which ksh would consider expressions like [[ (a) ]]
    	  as syntax errors has been fixed.
    99-03-31  A function defined as foo() without a function body
    	  was not reported as a syntax error.
    99-03-31  A bug in which ksh could run out of file descriptors when
    	  a stream was repeatedly opened with exec and read from
    	  has been fixed.

    98-04-30  --- Release ksh93g  ---
    98-04-30 +The pipefail option has been added.  With pipefail
    	  enabled, a pipeline will not complete until all
    	  commands are complete, and the return value will
    	  be that of the last command to fail, or zero if
    	  all complete successfully.
    98-04-30 +The name-value pair library uses the cdt library rather
    	  than the hash library.  This change should be transparent
    	  to applications.
    98-04-30 +On the U/WIN version for Window 95 and Windows NT,
              when a directory beginning with a letter followed by
              a colon is given to cd, it is assumed to be an absolute
              directory
    98-04-30 +When an executable is found on a given path,
    	  the appropriate library path variable is prepended
    	  with a corresponding library directory.
    98-04-30  A bug in which a name reference could be created to
    	  itself and later cause the shell to get into an infinite
    	  loop has been fixed.
    98-04-30  A bug in shcomp relating to compound variables was fixed.
    98-04-30  A bug introduced in ksh93e in which leading 0's in -Z
    	  fields caused the value to be treated as octal for arithmetic
    	  evaluation has been fixed.
    98-04-30  A bug when a name reference with a shorter name than
              the variable it references was the subject of a compound
    	  assignment has been fixed.
    98-04-30  A bug which in which assignment to array variables in
    	  a subshell could effect the parent shell has been
    	  fixed.
    98-04-30  read name?prompt was putting a 0 byte at the end of the
    	  prompt on standard error.
    98-04-30  A bug in [[ string1 > string2 ]] when ksh was run with -x
    	  has been fixed.
    98-04-30  A bug in which the escape character was not processed
    	  correctly inside {...} when brace expansion is enabled
    	  has been fixed, for example {\$foo}.
    98-04-30  A bug in line continuation in here-documents has been
    	  fixed.
    98-04-30  The default base when not specified with typeset -i is
    	  10 in accordance with the documentation.  Previously,
    	  the value was determined by the first assignment.
    98-04-30  A parsing bug in which a # preceded alphanumeric
    	  characters inside a command substitution caused
    	  a syntax error to be reported has been fixed.
    98-04-30  A bug in which a decimal constant represented as 10#ddd
    	  where ddd was more than five digits generated a syntax
    	  error has been fixed.
    98-04-30  A bug in here document expansion in which ${...} expansions
    	  were split across buffer boundaries has been fixed.
    98-04-30 +The sh_fun() function now takes third argument which
    	  is an argument list for the invoked discipline function
    	  or built-in.
    98-04-30 +A callback function can be installed which will give
              notification of file duplications and file closes.
    98-04-30  When ksh is compiled on systems that do not use fork()
    	  current option settings where not propagated to sub-shells.

    97-06-30  --- Release ksh93f  ---
    97-06-30 +Hostnames in addition to host addresses can be given in
    	  /dev/tcp/host/port virtual file names.
    97-06-30  File name completion and expansion now quotes special
    	  characters in file names from both emacs and vi edit modes.
    97-06-30  An empty for list behave like a for list with null expansions.
    	  It produces a warning message with sh -n.
    97-06-30 +The code has been modified to work with EBCDIC as well as ASCII.
    97-06-30  A bug which would cause the secondary prompt to be
    	  displayed when a user entered a literal carriage
    	  return has been fixed.
    97-06-30  A bug which caused ksh read -s name to core dump was
    	  fixed.
    97-06-30  A bug with the expansion of \} and \] inside double
    	  quoted strings that also contained variable expansions
    	  has been fixed
    97-06-30  Changes in the ksh93e point release caused autoload
    	  functions invoked from within command substitution
    	  to fail.  This has been fixed.
    97-06-30  A bug in the processing of here-documents that could
    	  prevent variable substitution to occur after $(...) command
    	  substitution for long here documents has been fixed.
    97-06-30  A bug caused by a race condition that could cause SIGTERM
    	  to be ignored by a child process has been fixed.
    97-06-30  A bug which prevented the startup of a coprocess immediately
    	  after killing a running coprocess has been fixed.
    97-06-30  ulimit foobar, where foobar is not an arithmetic
    	  expression, now gives an error message as it did with ksh88
    	  instead of setting the file size limit to 0.
    97-06-30  A bug which could cause an interactive shell to terminate when
    	  the last process of a pipeline was a POSIX function was fixed.
    97-06-30  A bug which could cause command substitution of a shell script
    	  to core dump has been fixed.
    97-06-30  A security hole was fixed in suid_exec.
    97-06-30  Arithmetic functions such as pow() that take more than
    	  one argument, did not work if arguments other than the
    	  first contained parenthesized sub-expression.
    97-06-30  The error message from a script containing an incomplete
    	  arithmetic expression has been corrected.
    97-06-30  A bug which caused a core dump on some machines when
    	  the value of a name reference contained a positional
    	  parameter and the name reference was not defined inside
    	  a function has been fixed.
    97-06-30  Arithmetic expressions now correctly handle hexadecimal
    	  constants.
    97-06-30  A bug in which integer variables could be expanded
    	  with a leading 10# when declared with typeset -i
    	  multiple times has been corrected.
    97-06-30  A bug in which IFS wasn't correctly restored when
    	  set within command substitution has been fixed.
    97-06-30  The _ character is now considered as part of a word
    	  with the M-f and M-b emacs directives as it was in ksh88.
    97-06-30  A bug in brace pattern expansions that caused expressions
              such as {foo\,bar,bam} to expand incorrectly have been fixed.

    96-07-31  --- Release ksh93e  ---
    96-07-31 +The math functions, atan2, hypot, fmod, and pow were added.
    96-07-31 +When a shared library is loaded, if the function lib_init()
    	  is defined in the library, it is invoked the first time that
    	  the library is loaded with builtin -f library.
    96-07-31  The k-shell information abstraction database option, KIA,
              has been revamped.
    96-07-31  Empty command substitutions of the form $() now work.
    	  whence -v foo now gives the correct result after calling
    	  builtin -d foo.
    96-07-31  A bug in right to left arithmetic assignment for which
    	  the arithmetic expression (( y = x = 1.5 )) did not
    	  yield 1 for y when x was declared typeset -i was fixed.
    96-07-31  printf has been fixed to handle format  containing
    	  and/or  145 correctly.  In addition, characters following
    	  %b in the format string are no longer displayed when
    	  the operand contains .
    96-07-31  A bug in printf that could cause the %E format to
    	  produce unnormalized results has been fixed.
    96-07-31  A bug which causes some arithmetic expressions to be
    	  incorrectly evaluated as integer expressions rather
    	  that floating point has been fixed.
    96-07-31  Functions defined inside a subshell no longer remain
    	  defined when the subshell completes.
    96-07-31  The error message from sh -c ';echo foo' has been
    	  corrected.
    96-07-31  The format for umask -S has been changed to agree
    	  with the specification in the POSIX standard.
    96-07-31  A bug that caused side effects in subscript evaluation
    	  when tracing was enabled for subscripts using ++ or --
    	  has been fixed.
    96-07-31  To conform to the Posix standard getopts has been changed
    	  so that the option char is set to ? when it returns with
    	  a non-zero exit status.
    96-07-31  The handling of \} inside ${name...} has been fixed so
    	  that the  quotes the }.
    96-07-31  A bug that caused the read builtin to resume execution
    	  after processing a trap has been fixed.
    96-07-31  [[ -s file ]] has been fixed so that if file is open
    	  by ksh, it is flushed first.
    96-07-31  In some cases attributes and sizes for non exported
    	  variables weren't being reset before running a script.
    96-07-31  The value of TMOUT was affected by changes make to
    	  it in a subshell.
    96-07-31  The jobs command did not reflect changes make by
    	  sending the CONT signal to a command.
    96-07-31  The error message for ksh -o unknown was incorrect.
    96-07-31  Functions invoked as name=value name, did not use
    	  values from the calling scope when evaluating value.
    96-07-31  A bug in which the shell would reexecute previously
    	  executed code when a shell script or coprocess was
    	  run in the background has been fixed.
    96-07-31  A bug in which an empty here-document would leave
    	  a file descriptor open has been fixed.
    96-07-31  A bug in which $(set -A array ...) would leave a
    	  side effect has been fixed.
    96-07-31  A discipline function for a global variable defined
    	  within a function defined with the function keyword,
    	  incorrectly created a local variable of the same name
    	  and applied the discipline to it.

    95-08-28  --- Release ksh93d  ---
    95-08-28  The  character was not handled correctly in replacement
    	  patterns with ${x/pattern/replace}.
    95-08-28  A bug with read in which the line did not end with
    	  a new-line has been fixed.
    95-08-28  A bug in file name generation which sometimes
    	  appended a . for filenames that ended in / has
    	  been fixed.
    95-08-28 +If a process is waited for after a status has
    	  been returned by a previous wait, wait now
    	  returns 127.
    95-08-28  A bug with hist (fc) -e which prevented a command
    	  to re-executed after it had been edited has been fixed.
    95-08-28  A bug which prevented quoting from removing the meaning
    	  of unary test operators has been fixed.
    95-08-28  A bug with typeahead and KEYBOARD traps with the
              MULTIBYTE option set has been fixed.
    95-08-28 +Builtin functions can take a third argument which is
              a void*.
    95-08-28  The nv_scan() function can restrict the scope of a walk
              to the top scope.

    95-04-31  --- Release ksh93c  ---
    95-04-31  The expansion of "$@" was incorrect when $1 was the null
    	  string.
    95-04-31  A bug which could incorrectly report a syntax error in
    	  a backquoted expression when a $ was preceded by \\
    	  has been fixed.
    95-04-31  A bug which prevented the shell from exiting after
    	  reporting an error when failing to open a script
    	  has been fixed.
    95-04-31  A bug that could lead to memory corruption when a
    	  large here document that required parameter or command
    	  substitution was expanded has been fixed.
    95-04-31  A bug that could cause a core dump on some systems
    	  after ksh detected an error when reading a function
    	  has been fixed.
    95-04-31  A bug which could cause a coprocess to hang when
    	  reading from a process that has terminated has been fixed.
    95-04-31  A bug which caused a script to terminate when set -e
    	  was on and the first command of and && or || list
    	  failed has been fixed.
    95-04-31  A bug with here documents inside $(...) when the delimiter
    	  word is an identifier has been fixed.
    95-04-31  A bug which caused $0 to display the wrong value when
    	  a script was invoked as an argument to the . command
    	  and the eval command has been fixed.
    95-04-31  A bug that could cause the built-in sleep to hang
    	  has been fixed.
    95-04-31  A bug introduces in 12/28/93b which caused the backslash
    	  to be removed when it was followed by digit inside double
    	  quotes in some instances has been fixed.
    95-04-31  A bug which could cause a core dump if ksh was invoked with
    	  standard input closed has been fixed.
    95-04-31  A bug which could cause a core dump if typeset -A was
    	  specified for an existing variable has been fixed.
    95-04-31  Variables that were unset but had attributes such as readonly
    	  and export were not listed with readonly, export and typeset.
    95-04-31  Several problems with signals have been fixed.
    95-04-31  A bug which prevented ulimit -t from working has been fixed.
    	  Also, a bug in which failed ulimits could cause a core dump
    	  has also been fixed.
    95-04-31  A bug in expansion of the form ${name/#pattern/string} and
    	  ${name/%pattern/string} has been fixed.
    95-04-31  A bug which caused read -r on a line that contained only
    	  blanks to get a non-null value has been fixed.
    95-04-31  A bug introduced in the 'a' point release in which
    	  ${x='\'} expanded to  when x was unset has been fixed.
    95-04-31  A bug which prevented a trap on EXIT from being executed
    	  when the last command in a script was a function invocation
    	  has been fixed.
    95-04-31  A bug which caused an interactive shell ignore input when
    	  standard error was redirected to a file with exec,
    	  and then restored with exec 2>&1 has been fixed.
    95-04-31  An interactive shell turns on monitor mode even when
    	  standard error has been redirected to a file.
    95-04-31  A bug which could cause standard input to be incorrectly
    	  positioned for the last command of a script has been fixed.
    95-04-31  A bug in the edit modes which allowed walking back in
    	  the history file for more than HISTSIZE commands has
    	  been fixed.
    95-04-31  A bug which could cause a core dump if variable TMPDIR was
    	  changed between two command substitutions has been fixed.
    95-04-31. A bug which prevented a trap on EXIT from being cleared
    	  has been fixed.
    95-04-31  A bug fixed for the v directive in vi MULTIBYTE has been
              fixed.
    95-04-31  Code to for IFS handling of multibyte characters has
              been added.
    95-04-31  The displaying of multibyte strings in export, readonly,
              typeset, and execution traces has been fixed.
    95-04-31  Variables inside functions are now statically scoped.
    	  The previous behavior was never documented.
    95-04-31  Variables inside functions are now statically scoped.
              The previous behavior was never documented.
    95-04-31  A few changes have been made to the name-value library
              that affect built-ins that use disciplines.  The
              changes allow disciplines to be shared by variables
              and should make it possible to add new disciplines
              without recompilation.
    95-04-31 +The name-value library interface has undergone significant
              change for this revision.  See the new nval.3 man page.

    94-12-31  --- Release ksh93b  ---
    94-12-31 +Variables inside functions are now statically scoped.
              The previous behavior was never documented.
    94-12-31 +If IFS contains two consecutive identical characters belonging
    	  to the [:space:] class, then this character is treated as
    	  a non-space delimiter so that each instance will delimit
    	  a field.  For example, IFS=$'\t\t' will cause two consecutive
    	  tabs to delimit a null field.
    94-12-31 +The getopts command has a -a name option that specifies a
    	  name that will be used for usage messages.
    94-12-31  A bug which caused unset RANDOM to dump core has been
    	  fixed.
    94-12-31  A bug which prevented return for terminating a profile
    	  or ENV file has been fixed.
    94-12-31  A bug which prevented standard input from being
    	  directed to /dev/null for background jobs when
    	  monitor mode was turned off has been fixed.
    94-12-31  Statements of the form typeset -options var[expr]=value
    	  did not perform substitutions on expr as expected.
    94-12-31  A bug which prevented the shell from sending a HUP
    	  signal to some background jobs that were not disowned
    	  has been fixed.
    94-12-31  A bug which allowed a script to trap signals that are
    	  ignored at the time that the shell was invoked by exec
    	  has been fixed.
    94-12-31  A bug which could cause a core dump when a discipline
    	  function was unset within a discipline was fixed.
    94-12-31  The typeset builtin now accepts a first argument of
    	 + or - for compatibility with ksh88.
    94-12-31  For compatibility with ksh88, the results of expansions
    	  of command arguments will treat the extended character
    	  match characters ()|& as ordinary characters.
    94-12-31  A bug which caused read to fail on a file that was
    	  open for read/write with <> when the first operation
    	  was print or printf has been fixed.
    94-12-31  When a job is suspended, it is put on the top of
    	  the job list as required by the POSIX standard.
    94-12-31  The value of OPTARG when an option that required
    	  an argument but didn't have one was incorrect in the
    	  case the the option string began with a :.
    94-12-31  A bug which caused the terminal to get into a bad
    	  state with some KEYBD traps in vi-mode has been fixed.
    94-12-31  A bug which caused an invalid trap to cause a script
    	  to terminate, rather than just return an error, has
    	  been fixed.
    94-12-31  Backreferencing sub-expressions in patterns and replacement
    	  strings now works.
    94-12-31  A bug in chmod which caused the -R option to fail has
    	  been fixed.
    94-12-31 +More signal names have been added for Solaris

    94-06-30  --- Release ksh93a  ---
    94-06-30  An expansion bug which causes portions of a word after
    	  a $((...)) expansion that contains a nested $var expansion
    	  to be lost has been fixed.
    94-06-30  A bug that caused a core dump when a script that did not
    	  have PWD set and did a cd inside command substitution
    	  has been fixed.
    94-06-30  A bug which caused a core dump on some machines when
    	  the LANG variable was assigned to has been fixed.
    94-06-30  A bug which incorrectly handled set disciplines that
    	  performed arithmetic evaluation when the discipline
    	  was called from the arithmetic evaluator has been fixed.
    94-06-30  A bug caused by an EXIT trap inside a function that
    	  was executed in a subshell was fixed.
    94-06-30  If foo is a function, and not a program, then command foo
    	  now reports that foo isn't found rather than invoking foo.
    94-06-30  The previous version incorrectly listed -A as an
    	  invocation option.  The -A option is only for set.
    94-06-30  A bug was fixed which caused ksh to loop when execution trace
    	  was enabled and the PS4 prompt required command substitution.
    94-06-30  A bug which could cause the job control switch character
    	  to be disabled when a script that enabled monitor mode
    	  terminated was fixed.
    94-06-30  A bug in the macro expansion global replacement operator //,
    	  when the pattern began with a [ or +( has been fixed.
    94-06-30  A bug which prevented ~ expansion from occurring when
    	  it was terminated with a colon inside an assignment
    	  has been fixed.
    94-06-30  A bug in the dot command which prevented autoload functions
    	  from working has been fixed.
    94-06-30  A bug which caused a variable to be unset if the
    	  its value were expanded inside a set discipline has
    	  been fixed.
    94-06-30  Whence -a now longer reports that a defined function
    	  is undefined.
    94-06-30  A bug on some systems in which $0 would be incorrect
    	  in scripts invoked by name has been fixed.
    94-06-30  Here documents with an empty body now work.
    94-06-30  A bug which disabled argument passing and resetting
    	  of options for a script invoked by name inside a
    	  function has been fixed.
    94-06-30  A bug in which an EXIT trap set the caller of a function
    	  would be executed if a command called inside a function
    	  was not found has been fixed.
    94-06-30  A bug which allowed a script to trap signals that are
    	  ignored at the time that the shell was invoked has
    	  been fixed.
    94-06-30  A bug which caused 2<&1- when applied to a shell built-in
    	  to leave standard input closed has been fixed.
    94-06-30  A bug which caused the shell to incorrectly parse
    	  $() command substitutions with nested case statements
    	  has been fixed.
### libast changes
    12-07-25 pathprobe.c: fix read() loop to handle EINTR
    12-06-28 vmalloc/malloc.c: use sbrk() unless VMALLOC_OPTIONS=mmap or asoinit(0,0,0)!=0 (workaround until next malloc update)
    12-06-28 aso/aso.c: asoinit(0,0,0): 0: no specific init, 1: app initialized
    12-06-27 sfio/sfvprintf.c: allow { L* z* } aliases for I* -- posix will probably pick one
    12-06-26 regex/regnexec.c: fix uninitialized variable reference
    12-06-26 comp/setlocale.c: utf8_wctomb() now calls (the corrrect) wc2utf8()
    12-06-25 string/chresc.c: accept \u[U+<hex>] and \u{U+<hex>}
    12-06-24 regex/regcomp.c: mb [^...] must be marked "complicated"
    12-06-20 port/astconf.c: increase DEBUG_astconf error debug levels (may leach into rt output)
    12-06-18 sfio/_sfopen.c: add 'e' => O_CLOEXEC
    12-06-18 features/fcntl.c: add #define O_CLOEXEC 0 if not defined
    12-06-13 features/float: handle __mips c99 peculiarities
    12-06-13 features/standards: handle __MACH__ posix peculiarities
    12-06-08 sfio/sfclose.c,sfmode.c: sfclose() for sfopopen() stream returns sh-compatible $?
    12-06-08 comp/strtold.c: fix header botch that missed ldexpl() prototype -- ouch
    12-06-06 misc/proclib.h: partially undo <ast_standards.h> for leaked ancient bsd-isms
    12-05-31 misc/proclib.h: <ast_standards.h> for linux undefined struct mmsghdr*
    12-05-31 error.h: add ERROR_PIPE(errno) to handle EPIPE and ECONNRESET
    12-05-31 Makefile: don't install $(INCLUDEDIR)/prototyped.h: src/cmd/INIT does it
    12-05-31 regcomp.c: add (?V...) ~(V...) REG_REGEXP switch
    12-05-28 regex: regoff_t in => ssize_t via api 20120528
    12-05-21 features/asometh: split intrinsic and method tests so code only instantiated in aso.c
    12-05-21 comp/strdup.c: use oldof() since mem overwritten by string copy
    12-05-18 misc/stk.c: fix access of moved realloc() data
    12-05-15 misc/optget.c: #? option with no value should have opt_info.num==0
    12-05-11 misc/stk.c: fix memmove() read of 1 uninitialized byte
    12-05-11 regex/regcoll.c: avoid memcpy() to self
    12-05-01 port/astconf.c: fix astconflist() to list standard minmax value if defined
    12-04-26 sfio/sftmp.c: fix memory leak due to inadvertent SF_STATIC copy
    12-04-26 sfio/sfwrite.c: fix subtle memory leak (with Vmlast or Vmpool or freeBSD malloc)
    12-04-26 vmalloc/vmbest.c: SIGSEGV overcommit check for __linux__ only
    12-04-25 vmalloc: add _vmfd() for private close-on-exec fds
    12-04-23 sfio_t.h: change getr to 32 bits to prepare for UTF-8 delimiters
    12-04-23 features/signal.c: add SIGSTKFLT
    12-04-17 regex/regcomp.c: fix (E:...) vs (E)... scoping
    12-04-11 features/sys: add aix's _LARGE_FILE_API to the _LARGEFILE(64)?_SOURCE mix -- anyone else?
    12-04-11 include/cmdarg.h,misc/cmdarg.c: (finally!) add a discipline with Cmdrun_f
    12-03-28 vmalloc: int vs [s]size_t cleanup
    12-03-27 sfio: fix #if logic that caused syntax errors (on 64 bit uwin)
    12-03-10 misc/optget.c: HELP_index for "PLUGIN" too
    12-02-29 include/shcmd.h: PLUGIN_VERSION 20111111 for cdt disc/meth change
    12-02-29 comp/spawnveg.c: fix sigcritical() to include waitpid() for internal child
    12-02-29 malloc.c: make __malloc_hook initialization thread safe
    12-02-24 comp/iconv.c: fix winix UTF-8 vs UCS-2 over-conversion
    12-02-24 astsa/*.h: clean up header guards
    12-02-24 astsa/astsa.omk: clean up standalone old make makefile interactions
    12-02-21 misc/cmdarg.c: fix bug that set argv[0]
    12-02-10 sfvprintf.c: fix 1 byte too long buffer access
    12-02-07 malloc.c/features/vmalloc: add gnu __malloc_hook tests
    12-02-06 vmmopen.c: fix ALIGN vs sys/param.h macro conflict
    12-02-02 astlicense.c: add license.component for component-specific licenses
    12-01-31 spawnveg.c: fix transient bug that made invalid setpgid() call
    12-01-27 pathpath.c: fix buffer size math when internal allocation requested
    12-01-24 malloc.c: fix _vmkeep() bug that did not return previous state
    12-01-23 malloc.c: add VMALLOC_OPTIONS=break to try sbrk() block allocator first
    12-01-21 astlicense.c: option style only overrides default license.type
    12-01-18 malloc.c: disable multiple regions for tracing or !vmbest or ASO_SIGNAL
    12-01-12 sfpkrd.c: add __sun I_PEEK+rsh runtime workaround
    12-01-10 shcmd.h: void* => Shbltin_t*
    12-01-10 tmxdate.c: handle { n>=1000 } TM_PARTS
    11-12-21 plug up some memory links -- thanks mhlavink
    11-12-21 vmprivate.c: enclose VM_NONMEM exception in CLRLOCK(vm,0) ... SETLOCK(vm,0)
    11-12-13 aso: in -lposix for uwin, not -last -- just like vmalloc
    11-12-13 sfpoll.c: all streams SF_IOINTR => don't ignore EINTR
    11-12-13 sfdcslow.c: set SF_IOINTR
    11-12-09 malloc.c: add _vmkeep() for setlocale() intercept _SYS_setlocale_free_OK
    11-12-04 sfio: _Sfmaxr=0 (unlimited) by default; use ulimit -M|-d or SFIO_OPTIONS
    11-12-01 aso: sync to new api
    11-11-11 optget.c: move .TH to the top for --nroff to get our macros first
    11-11-11 aso,cdt,vmalloc: resync with kpv
    11-11-11 cdt: preserve bits and Dt_link_t for CDT_VERSION < 20111111
    11-10-24 sfvprintf.c: %.-ns truncate from left to n chars
    11-10-21 sfvprintf.c: fix %0s (no width) core dump
    11-10-10 aso: add _WIN32 support
    11-09-26 vmalloc: sync with kpv
    11-08-29 features/{dirent,wchar,wctype}: eliminate #include with no header
    11-08-25 #pragma prototyped tweaks -- sun4 is dead, long live sun4
    11-08-25 ftwalk.c: FTS_SLNONE => FTW_SL
    11-08-11 features/wchar: fix #include _nxt_wchar for K&R C
    11-08-04 optget.c: tweak --html rendering
    11-07-24 mime.c: add %(default)[st] default if arg == ""
    11-07-21 setlocale.c: fix debug locale to treat "<<" as two single byte chars
    11-06-14 spawnveg.c: pgid -1: new session -2: setpgrp()&&tcsetpgid()
    11-06-14 pathprog.c: add darwin _NSGetExecutablePath
    11-05-14 features/common,features/align.c: { _X86_ _X64_ } conditionals for generic uwin
    11-05-13 tm/tminit.c: tweak tzname[] prototype
    11-05-09 astlicense.c: add ". file" parent-relative include and depth 4 input stack
    11-05-05 cmdarg: update to cmdopen_20110505 api
    11-05-03 sfio/sfclose.c: make sure close() errors propagate to sfclose() return value
    11-04-20 port/astlicense.c: add { id name } keys
    11-04-15 fmtdev.c: fix to work for non-{blk,chr} special
    11-04-12 stk: change size args to size_t and stseek() offset to ssize_t
    11-04-12 sfio: sync with kpv to optimize large SF_STRING sfputr() buffer allocation
    11-03-28 misc/fts.c: fix FTS_SLNONE logic to set it when it should!
    11-03-17 misc/stk.c: fixed bug that could delete an active stack frame
    11-03-10 sfio/sfvprintf.c: add %0<width>s to preserve <width> trailing chars in string arg
    11-03-09 misc/magic.c: add %d...%s where if %d==1 then %s=="" else %s=="s"
    11-03-09 misc/magic.tab: add windows ico
    11-02-08 misc/stk.c: change STK_FSIZE to (1024*sizeof(char*)) for 64 bit normalization
    11-02-02 sfio/sfmode.c: don't call sfsetbuf() on unbuffered stream to make it unbuffered
    11-02-02 features/wchar: handle hp.ia64 va_list interactions
    11-02-02 comp/omitted.c: fix mismatch between stat() vs _stat()
    11-01-31 std/wctype,features/wctype: add to handle <wchar.h> interactions
    11-01-28 add -lw for ancient sunos
    11-01-28 include/magic.h,misc/magic.c: add MAGIC_ALL
    11-01-27 tm/tmxfmt.c,tmpoff.c: %_z for SHH:MM
    11-01-25 features/wchar: change <wctype.h> <wchar.h> ordering
    10-12-24 sfstrtof.h: fix thousand grouping bug that did not check last group
    10-12-21 pathkey.c: add win32 { /32 /64 } preroot to hash
    10-12-09 pathprog.c: handle intermediate path != '* and fix invalid pathpath() call
    10-12-01 astconf.c: fix look.standard undefined variable reference
    10-12-01 sfset.c: SF_LINE|SF_WCWIDTH => no need for sfsetbuf() to call isatty()
    10-12-01 sfsetbuf.c: cache /dev/null <dev,ino> to cut down /dev/null stat()'s
    10-12-01 optget.c: delay dictionary initialization until needed
    10-11-30 malloc.c: drop { VMDEBUG VMETHOD VMPROFILE VMTRACE } env checks
    10-11-30 port/astconf.c: eliminate esaccess() calls for OP_universe checks
    10-11-24 regcomp.c: [[=]=]] must at least match itself in non-C locales
    10-11-23 glob.h,glob.c: add GLOB_GROUP => REG_SHELL_GROUP
    10-11-20 glob.c: handle mode switches across /
    10-11-19 regcomp.c: REG_SHELL => REG_CLASS_ESCAPE
    10-11-16 vmalloc.h: add VMFL tracing to vmstrdup()
    10-11-16 ast.h: simplify VMDEBUG _BLD_DEBUG and VMFL logic
    10-11-12 tm/tmlocale.c: ast TM_* extensions default to C locale
    10-11-10 regex/regnexec.c,vmalloc/vmstat.c: eliminate strict-aliasing puns
    10-10-20 misc/translate.c: change debug translation to drop " in (a,b,c,"d")
    10-10-10 misc/glob.c: drop ancient D_FILENO(d)!=0 test and trust readdir()
    10-10-06 misc/translate.c: fix "debug" locale logic
    10-10-04 misc/magic.c: fix magic() skip check to honor the continuation
    10-10-04 regex/regcoll.c: add wchar_t* args to regcollate(), drop ucs name lookup
    10-09-28 comp/setlocale.c: add utf8_wctomb()
    10-09-28 string/chresc.c,regex/regcoll.c: fix \S[.X.] (\C[.X.] never worked!)
    10-09-24 string/chresc.c: \Cc for control c, \S[.X.] for collating symbol X
    10-09-24 string/chresc.c: { c \ } deprecated
    10-09-22 regex/regcomp.c: fix off-by-one collation class allocation bug
    10-09-20 regex/regclass.c: fix CTYPES off-by-one bug
    10-09-14 comp/conf.sh: const int conf_elements, prefix_elements;
    10-09-08 add features/sizeof => ast_sizeof.h
    10-08-31 comp/getopt[l].c: export functions for dlls
    10-08-25 port/lc.c: add features/locale check for canonical UTF-8 spelling
    10-08-20 include/ast.h: add export plugin_version() prototype
    10-08-20 comp/conf.tab: add SF_BUFSIZE
    10-08-11 misc/conformance.c: conformance(0,0) => "standard"
    10-08-11 misc/conformance.c: check ast_env_serial for dynamic astconf() changes
    10-08-11 port/lcgen.c: remember to fudge Table_t.count for synthesized entries
    10-08-04 include/ast.h,comp/setlocale.c: add { debug C.UTF-8 } mbalpha() mbwidth()
    10-08-02 misc/translate.c: add NLSPATH message cache check
    10-07-29 string/fmtint.c: fix nasty bug that rendered "1000" as "1"
    10-07-27 setlocale,lsgen,localeconv: handle C vs C_EU decimal thousands sep
    10-07-26 misc/optget.c: fix interaction with nested plugin/builtin calls
    10-06-29 string/strtoi.h: strton() multiplier 1 => power of two suffix
    10-06-28 features/wchar: handle systems that require __va_list => va_list
    10-06-28 comp/conf.tab: another PID_MAX tweak -- default to 99999 for most
    10-06-28 port/astconf.c: lone "CONFORMANCE = standard" => all defaults standard
    10-06-25 misc/optget.c: avoid sfprints() call during initialization
    10-06-01 features/api, ast_api.h: formalized forwards/backwards api compatibility
    10-06-01 _AST_API=20100601: add size_t args for all path*() output buffers
    10-06-01 comp/setlocale.c: handle C.UTF-8 test locale
    10-06-01 include/mc.h: add size_t to mcfind() for result buffer (internal api)
    10-06-01 use strlcpy() instead of strncpy()
    10-05-28 include/ast_version.h: add AST_PLUGIN_VERSION for dllplugin()
    10-05-28 include/shcmd.h: add SH_PLUGIN_VERSION for dllplugin()
    10-05-28 misc/conformance.c: add conformance(3)
    10-05-28 misc/optget.c: add [(id1|id2)...] conformance("id1|id2",0) conditionals
    10-05-25 include/sfhdr.h: adjust SF_NMAP according to _ptr_bits
    10-05-25 include/shcmd.h: add sh_builtin() macro for lib_init() table initialization
    10-05-21 misc/optget.c: --html \bfoo::bar([[:digit:]][[:upper:]]*) => foo-bar.html
    10-05-15 include/proc.h,misc/procopen.c: add PROC_ORPHAN
    10-05-09 misc/optget.c: add --???MAN[section] --???SECTION
    10-05-07 sfio,stdio: fix all snprintf() variants to handle buf==0 and/or n==0
    10-05-04 string/fmtesc.c: add mb iswsoace() and iswcntrl() quoting checks
    10-05-03 fix LC_MESSAGES catalog lookup bugs, check for $set==3, accept $set==1
    10-04-30 string/chresc.c: add chrexp() for FMT_EXP_*
    10-04-30 string/stresc.c: add strexp() for FMT_EXP_*
    10-04-30 string/chresc.c: fix \uXXXXY bug that consumed Y
    10-04-22 misc/optget.c: check for html entities in <A name="...">
    10-04-22 misc/getcwd.c: add features/syscall check for SYSGETCWD() { linux solaris }
    10-04-22 string/stresc.c: wide chars absent locale guidance default to UTF-8
    10-04-12 port/mnt.c: favor bsd getfsstat() over getmntinfo()
    10-04-11 string/strtoi.h: k (1000) and ki (1024) now differentiated
    10-04-10 misc/recstr.c: fix 'd[delimiter]' parse
    10-04-08 include/vmalloc.h,vmalloc/vmstat.c: add Vmstat_t.mode region mode bits
    10-04-05 misc/fts.c: drop 1997-01-07 fts_open()=0 is one file and stat() fails
    10-04-05 misc/optget.c,optlib.h: add Optpass_t.release for --nroff .TH
    10-04-02 misc/optget.c: fix $'[-n?..]' --version bug
    10-04-02 regex/regcomp.c: ~(X) => REG_EXTENDED|REG_AUGMENTED, ~(PU) instead of ~(U)
    10-03-24 misc/procopen.c: add PROC_FD_CTTY(fd)
    10-03-24 path/pathtemp.c: fix pointer => int casts
    10-03-15 regex/regcache.c: fix 1 byte buffer overflow (didn't count trailing  )
    10-03-08 features/tvlib: fix utimensat probe to include all macros/structs
    10-03-07 features/lib: change stream_peek to test pipes only
    10-03-07 string/strelapsed.c: fix next char return overrun
    10-03-06 tm/tvtouch.c: use runtime fallback if utimensat() fails with ENOSYS
    10-03-05 path/pathtemp.c: add pfx /seed for regression testing
    10-03-04 vmalloc/vmwalk.c: add user supplied handle arg
    10-03-04 path/pathtemp.c: properly handle mktemp()-style *+(X) templates
    10-03-03 include/ast_getopt.h: remove NULL guard - _AST_GETOPT_H now handles it
    10-02-24 comp/getopt.h: fix ast_std.h interactions
    10-02-24 vmalloc/malloc.c: empty { VMALLOC_OPTION VMDEBUG ... } => no debug!
    10-02-02 string/base64.c: fix corner case output buffer overflow
    10-02-02 features/fs: sys/mnttab.h requires stdio.h on some systems!!
    10-02-01 misc/optget.c: uppercase --html heading -- doh
    10-01-29 misc/optget.c: [+NAME?...] overrides error_info.id for >= STYLE_man
    10-01-25 vmalloc/vmprivate.c: fix seg ptr initialization bug (24 years old!!)
    10-01-20 misc/optget.c: handle nested {...} rendering
    10-01-20 misc/state.c: add ast.version for runtime api version
    10-01-20 port/astconf.c: "_AST_VERSION" now returns ast.version
    10-01-20 include/ast_std.h: add ast.version for runtime api version
    10-01-19 astlicense.c: add epl
    10-01-01 vmalloc: VMALLOC_OPTIONS env var for all runtime options
    10-01-01 include: change some <ast.h> refs to less intrusive <ast_*.h>
    10-01-01 setlocale.c,translate.c,fmterror.c: AST_LC_internal retains prev state
    10-01-01 comp/setlocale.c: AST_LC_setenv defers to LC_ALL (for sh)
    10-01-01 ast_std.h: add { AST_LC_internal AST_LC_setenv }
    09-12-24 comp/setlocale.c: fix setlocale(LC_ALL,"") when already initialized
    09-12-17 misc/optget.c: handle mixed solaris usage="x:f:(in)yo:(out)"
    09-12-11 regex/regcomp.c: posix semantics for [z-a]
    09-12-11 regex/regcomp.c: fix BRE/ERE ^^ logic
    09-12-11 regex/regcomp.c: fix regcomb() for REG_LEFT|REG_RIGHT
    09-12-11 regex/regcomp.c: bm complete=0 if REX_END
    09-12-11 comp/sigflag.c: add with npt check in features/sig.sh
    09-12-11 tm/tminit.c: fix _tzset_environ logic
    09-12-09 tm/tmlocale.c: include "ast_nl_types.h" to pull nl_langinfo in!
    09-12-04 features/options: add "opt map-libc" check
    09-12-03 tm/tmxdate.c: fix 'next month final day' for dec -> jan
    09-11-21 misc/magic.tab: add gimp XCF
    09-11-20 vmalloc/vmtrace.c: add pid to assertion disgnostics
    09-11-11 regex.h,regcomp.c: add REG_CLASS_ESCAPE,  inside [...] literal by default
    09-11-03 regex/regcache.c: change to variable length pattern strings
    09-10-28 include/error.h: fix ERROR_translate() arg parens
    09-10-26 port/lcgen.c,comp/setlocale.c: handle LANG init after LC_* already defined
    09-10-05 _sfopen.c: add but ignore 'F' flags for stdio compatibility
    09-09-28 fts.h,ftwalk.h,fts.c: promote { namelen pathlen level } to (s)size_t
    09-09-28 locales: add AST_LC_LANG for $LANG
    09-09-28 setlocale.c: fix logic for dynamic { LANG LC_ALL LC_* } changes
    09-09-17 include/sfio.h,sfio/sfwalk.c: add sfwalk()
    09-09-09 sfio/sfputr.c: add SIGPIPE hang fix
    09-08-24 sfio/sfreserve.c: fix SF_UNBOUND logic with pushed streams
    09-08-18 include/ast_std.h,ast.h: add ast.mb_sync to sync mbchar() after error
    09-08-17 comp/setlocale.c: add AST_LC_utf8 and { utf8_mbtowc() utf8_mblen() }
    09-08-11 comp/setlocale.c: treat "en"/"en_US" AST_LC_MESSAGES as "C"/"POSIX"
    09-08-10 vmalloc/vmhdr.h: add user-defined _AST_PAGESIZE and computed VMHEAPINCR
    09-08-09 comp/conf.tab: add NPROCESSORS_MAX
    09-07-29 astlicense.c: fix first name=value logic error
    09-07-22 string/fmtip6.c: don't drop trailing 0 in 44::1:0:0
    09-06-30 port/astconf.c: standard PATH_RESOLVE is "physical" (not "metaphysical")
    09-06-19 vmalloc: sync with kpv
    09-06-19 include/shcmd.h: add sh_context(p) cast
    09-06-11 misc/magic.tab: differentiate pc 386 32/64 bit dll/exe/obj
    09-06-06 port/astconf.c: fix look->name null pointer reference
    09-06-05 port/astconf.c: fix 'UNIVERSE = value' synthesize logic
    09-05-25 tm/tmxduration.c: add
    09-05-08 comp/syslog.c: add _UWIN /var/log/syslog preference
    09-05-01 comp/setlocale.c: fix _UWIN intercepts to return NiL on unknown locales
    09-04-27 sfio/sfpool.c: fix bug that did not return pool on delete
    09-04-22 include/regex.h,regex/regcomp.c: add REG_REGEXP <regexp.h> compatibility
    09-04-15 tm/tmxdate.c: handle "4th thursday in november"
    09-03-31 string/strvcmp.c,string/strnvcmp.c: add version strcmp(3)
    09-03-31 string/strpcmp.c,string/strnpcmp.c: add path prefix strcmp(3)
    09-03-29 misc/optget.c: clean up num = number casts
    09-03-04 tm/tmxmake.c: add tmxtm() with zone override
    09-03-03 tm/tmxfmt.c: add %(...)<c>, specifically %(...)z for output zone
    09-02-22 tm/tmxdate.c: add iso P... durations
    09-02-02 path/pathprog.c: add
    09-02-02 misc/opthdr.h,optget.c: fix flags mixup, handle old '-' as option
    09-02-02 sfio/sfprints.c: fix sfvaprints() return value to not count trailing ' '
    09-02-02 misc/cmdarg.c: handle !defined(ARG_MAX)
    09-02-02 port/astconf.c: fix UNIVERSE overwrite of null[] value!
    09-01-31 features/sys: drop header sys/localedef.h
    09-01-28 include/fs3d.h,misc/fs3d.c: mount() => fs3d_mount() for diff std prototypes
    09-01-14 misc/fts_open.c: delay top list reorder until first fts_read()
    09-01-14 include/ls.h: LS_W_INUMBER => 9 to accomodate large st_ino
    09-01-14 misc/optget.c: expand STYLE_usage input text
    09-01-09 features/uwin,stdio/_stdfun.c: iffe for _p__iob and __p__iob
    09-01-09 misc/magic.tab: add ISO filesystem image entries
    09-01-07 string/strtoi.c: strtol() etc. do not consume [lLuU] suffix -- thanks jkf
    09-01-07 sfio/sfstrtof.h: strtod() etc. do not consume [fFlL] suffix -- thanks jkf
    09-01-05 string/strlcat.c: fix logic to match docs (not that easy)
    08-12-30 tm/tmxdate.c,include/tm.h: add TM_WORK { "workday" "working" "work" }
    08-12-28 sfio/sfcvt.c: fix 'a' format rounding
    08-12-21 tm/tmdata.c: add 2008-12-31+23:59:60-0000 leap second event
    08-12-19 tm/tmxdate.c: check for dates near the epoch rolling back to the future
    08-12-19 tm/tmxfmt.c: change %s for now==0 to be the epoch
    08-12-07 include/ast_std.h,misc/getenv.c: no _ast_getenv for uwin ast54 compatibility
    08-12-07 tm/tmxfmt.c: add %[_][EO]K for [space pad] [full|long] iso
    08-12-07 sfio/sfvscanf.c: fix ok[] short by one allocation
    08-12-07 comp/setlocale.c: fix off by one composite initialition loop test
    08-12-07 path/pathkey.c: fix off by one loop test
    08-12-04 vmalloc/vmbest.c: catch sbrk() wraparound
    08-12-04 comp/spawnveg.c: clean up attrs on failure too
    08-11-04 regex/regcomp.c: fix locale [!-...] and [^-...] re-initialization
    08-11-04 stdio: add flockfile.c ftrylockfile.c funlockfile.c
    08-10-24 port/astconf.c: handle multiple/trailing '/' in universe initialization
    08-09-10 misc/magic.c: handle old vcodex() indices
    08-09-10 sfio/sfvprintf.c: drop SF_WCWIDTH, use %Lc or %Ls instead
    08-09-05 Makefile: ibm.risc joins the :NOOPTIMIZE: crowd
    08-09-04 regex/regnexec.c: fix nested delimiter match beyond end of subject
    08-08-20 misc/fts.c: fix st_nlink stat() optimization logic
    08-08-19 sfio/sfpkrd.c: workaround macosx recv(PEEK) data consumption on non-socket
    08-08-19 strn?tol?d: handle long double with smaller exponent range than double
    08-08-18 sfio/sfcvt.c: eliminate excessive multiplies and integral overprecision
    08-08-11 tm/tmxfmt.c: handle %10N and %010N
    08-08-06 include/shcmd.h: add 'int invariant;' for builtin invariant arg count
    08-08-05 features/ndbm: favor sleepycat ndbm compatibility
    08-07-21 include/glob.h,misc/glob.c: GLOB_STARSTAR only forces lstat on chdir
    08-07-17 sfio: sync with kpv
    08-07-17 misc/optget.c: call astwinsize() each time terminal width required
    08-07-16 sfio/sfvscanf.c: fix %% to skip leading space per posix
    08-07-16 vmalloc/vmbest.c: add VMCHECK=m, VM_mmap to favor mmap() alloc
    08-07-16 features/stdio,stdio/f(read|write).c: size_t return value!! ouch
    08-06-24 tm/tmxfmt.c: fix %z to handle tm_isdst -- doh
    08-06-24 misc/astintercept.c,misc/getenv.c: split from misc/setenviron.c
    08-06-17 misc/setenviron.c: add { astintercept() getenv() }
    08-06-09 tm/tmlocale.c: use _DATE_FMT if defined for TM_DEFAULT
    08-06-06 misc/optget.c: handle sub-component about details
    08-06-04 misc/optget.c: fix [-n?..#0093; version parse
    08-06-04 include/debug.h,misc/debug.c: merge with kpvdebug.h
    08-06-02 features/ndbm: add to tame dbmlib.iffe replication
    08-06-01 comp/resolvepath.c,realpath.c: fix resolvepath() return value type
    08-05-22 tm/tmxdate.c: fix a few ordinal/last/this/next bugs
    08-05-18 string/fmtre.c: fix omitted stack var initialization bug
    08-05-14 regex/regcomp.c,regcoll.c: fix UTF-8 collation sequence logic
    08-05-11 tm/tmxfmt.c: :NOOPTIMIZE:, otherwise %Q/../../ fails
    08-05-01 tm/tmxdate.c: mon 1..12 => mon[13] -- doh
    08-04-30 misc/glob.c,reegex/regcomp.c: ~(R) => ~(O) to avoid pcre clash
    08-04-24 port/astconf.c: 'name = value' does assignment without system init
    08-04-15 port/astconf.c: SC#N treated like 'SC(N)'
    08-04-14 misc/optget.c: clean up nroff output
    08-04-01 port/astconf.c: add RELEASE => /proc/version fallback
    08-03-30 misc/optget.c: [-n]... to enable -number & +number options
    08-03-06 misc/optget.c: ---* and +++* are now operands
    08-03-06 misc/errorx.c: fix old error_info.translate workaround
    08-02-05 regex/regcomp.c: allow REG_SHELL {,n}... => {0,n}...
    08-02-27 misc/stk.c: top element during allocation relocated to top
    08-02-18 include/ip6.h,string/strtoip6.c,fmtip6.c: add ipv6 addr support
    08-02-14 regex/regsubexec.c: fix null match (tricky)
    08-02-14 regex/regsubcomp.c: fix SRE to match ksh
    08-02-11 comp/spawnveg.c: return proper errno on [v]fork() failure
    08-02-11 tm/tmxdate.c,tmdata.c: handle more ISO 8601:2000 forms
    08-02-02 regex/reglib.h: add REGMULTIREF to REG_COMP
    08-02-02 string/strmatch.c: fix str="" pat="" sub values
    08-01-31 comp/conf.sh,conf.tab: handle /bin/sh  in read data, redir subshell
    08-01-18 misc/magic.tab: amd-x68, 64-bit => x86-64
    08-01-18 string/strnton.c,strntonll.c: add
    07-12-10 string/strelapsed.c: "0" is a valid elapsed time!
    07-12-02 sfio/sfreserve.c: preserve SF_SHARE sfrd() via sfreserve(f,0,0)
    07-11-21 comp/setlocale.c: add sjis_mbtowc() to work around [\~] translation
    07-11-15 features/signal.c: RT(1) .. RT(MAX-1) => RTMIN+1 .. RTMAX-1
    07-11-14 features/float: favor sscanf() due to gnu strto[l]d() nan bugs
    07-10-31 regex/regcomp.c: fix REX_COLL_CLASS node allocation size
    07-10-31 sfio/sfcvt.c: use signbit() if available
    07-10-31 features/isoc99: _ISOC99_SOURCE tests
    07-10-31 port/astmath.c: add -DN=8 for signbit()
    07-10-31 sfio/sfstrtod.h: don't forget about -0.0
    07-10-26 features/map.c: add { optopt optarg optind opterr }
    07-10-26 features/stdio: add _filbuf => _ast__filbuf
    07-10-26 comp/getsubopt.c: fix #undef that interfered with <ast_map.h>
    07-10-26 regex/regcomp.c: fix bug that missed ')' in ~(F)...
    07-10-12 port/astconf.c: fix CONF_ALLOC 16 bit overflow
    07-10-12 misc/fts.c: fix fts_close() to free the handle -- doh
    07-10-11 comp/setlocale.c: second and subsequent setlocale(*,"") reverts to previous
    07-10-11 path/pathprobe.c: add vfs ST_NOSUID check
    07-10-10 comp/conf.tab: add a few more xpg6 deferrals
    07-09-28 astsa: update to share with mainline src via _PACKAGE_astsa
    07-09-25 sfio/sfgetr.c: no limit on string stream line size
    07-09-25 sfio/sfextern.c: increase _Sfmaxr to 256*1024
    07-09-18 misc/procopen.c: tighten up SIGCHLD logic between parent/child
    07-09-18 misc/signal.c: unblock SIG_DFL after setting handler, sig<0 => don't unblock
    07-09-13 misc/fs3d.c: no $LD_PRELOAD => no 3d and avoids invalid mount(2) call
    07-09-11 vmalloc: vmstat(0,0)==1 => region in use, drop VM_primary|VM_secondary
    07-09-05 misc/recstr.c: handle [lL] gobbled by strtol() -- ouch
    07-08-17 path/pathprobe.c: handle '\r' in VERSION string
    07-07-17 regex/regcache.c: regcache(0,n,0) extends cache to size n (no shrinking)
    07-07-16 tm/tmdata.c: add 2005-12-31, drop 1999-12-31 (where did that come from?)
    07-05-21 tm/tmxfmt.c,tmxscan.c: %F => %L (TM_DEFAULT); %F => %Y-%m-%d
    07-05-15 sfio/sfvprintf.c: %h? and SFFMT_SHORT => raw bytes
    07-05-09 features/signal.c,features/siglist: use kill -l & strsignal()
    07-04-25 misc/optctx.c: add for opt_info switching
    07-04-24 misc/cmdarg.c,include/cmdarg.h: add CMD_CHECKED, CMD_SILENT
    07-04-24 misc/procopen.c,include/proc.h: add PROC_CHECK
    07-04-24 misc/procrun.c: add flags arg (current use PROC_ARGMOD)
    07-04-24 misc/cmdarg.c,include/cmdarg.h: move from src/cmd/tw
    07-04-20 port/(lclang.h|lc.c|mc.c|lclib.h|lcgen.c): separate lctab.c
    07-04-20 comp/conf.sh: defer to systems without 'grep -q' -- sigh
    07-04-20 comp/conf.sh: probe for LL integer constant initializer suffix
    07-04-20 include/syslog.h: <namval.h> => <ast_namval.h> for win32
    07-04-20 ast_namval.h: add as copy of include/namval.h for win32
    07-04-19 comp/conf.tab: fix SVID SI entries to probe SI_* (not _SI_*)
    07-04-13 tm/tmxdate.c,tm/tmzone.c: handle [-+]0000 UTC zone offset
    07-04-11 sfio/sfvprintf.c: add %F, propagate SFFMT_UPPER
    07-04-11 sfio/sfcvt.c: handle SFFMT_UPPER => nan/inf vs. NAN/INF
    07-04-02 comp/conf.tab,comp/conf.sh: add C/POSIX <stdint.h> symbols
    07-03-28 misc/optget.c: fix l10n --?-
    07-03-25 features/common: fix { ast_std.h ast_map.h stdint.h } logic
    07-03-21 error.h: move from error_info to (*_error_data_)
    07-03-21 misc/error.c: add errorctx() for error_info switching
    07-03-21 option.h: move from opt_info to (*_opt_data_)
    07-03-19 regex/regdecomp.c: fix REX_ONECHAR escapes and add REX_KMP
    07-03-11 tm/tmxscan.c,regex/regnexec.c: fix strict-alias transgressions
    07-02-27 comp/conf.sh: handle native getconf invalid numeric values
    07-02-21 comp/conf.sh,comp/conf.tab: handle SSIZE_MAX vs _POSIX_SSIZE_MAX
    07-02-20 sfio/sfvprintf.c: handle SF_WCWIDTH justification
    07-02-14 features/common: cover <stdint.h>, move to int_(bits)_t
    07-02-14 include/int.h: drop
    07-02-14 include/sfio.h: add SF_WCWIDTH
    07-02-12 comp/conf.sh: fix CONF_LIMIT bug that missed ULONG_MAX etc.
    07-02-12 comp/conf.tab: *LONGLONG* => *LLONG* to match posix
    07-02-12 features/float: *LONGLONG* => *LLONG* to match posix
    07-02-12 port/astconf.c: handle CONF_LIMITS_DEF with no deferral
    07-02-12 stdio/vasprintf.c: add trailing ' ' -- doh
    07-02-04 string/fmtelapsed.c: fix naive multi month/year logic
    07-02-02 misc/optget.c: add --??posix for getopts(1)/getopt(3)
    07-01-26 string/chresc.c: use mbchar()
    07-01-26 misc/optget.c: handle "o:-:" usage for old-style long options
    07-01-22 sfio/sfdisc.c,sfpool.c: handle push on streams with pending peek
    07-01-22 include/sfio.h: mv Sfieee_t to sfio/sfhdr.h
    07-01-17 tm/tmxfmt.c: fix terminating nil logic which clobbered size-1
    07-01-11 misc/stk.c: a 2 day marathon bug fix (can we release now dr ek?)
    07-01-05 comp/spawnveg.c: posix_spawnattr_setflags(POSIX_SPAWN_SETPGROUP)
    07-01-05 misc/error.c: fix multibyte vs. printable logic
    07-01-01 comp/conf.sh: LC_ALL=C
    06-12-26 tm/tmxdate.c: handle nn*.nnnn* == sec.ns
    06-12-20 features/libpath.sh: generalize sol.* LIBPATH patterns
    06-12-18 comp/setlocale.c: include ast_standards.h and ast_wchar.h !
    06-12-12 string/strperm.c: octal modes are absolute!
    06-12-11 comp/conf.tab: always defer ARG_MAX
    06-12-07 Makefile: fix conftab.c generation CCFLAGS to match build - doh
    06-12-04 sfio/sfcvt.c: fix (int) vs. (long) cast mismatches
    06-12-01 comp/conf.tab: add changes to cover solaris { bin xpg4 xpg6 }
    06-12-01 regex/reginit.c: adjust { SRE KRE } escaped (){}*? inside [...]
    06-12-01 sfio/sfcvt.c: add signbit/copysign tests
    06-11-22 comp/spawnveg.c: fix _real_vfork logic to work with 3d
    06-11-20 features/common: bias _ast_int8_t "long long" before "__int64"
    06-11-20 string/strperm.c: fix X to work with all ops (not just +)
    06-11-15 astconf.c,conf.tab: add CONF_DEFER_* for variable constants
    06-11-11 port/astconf.c: validate path arg w.r.t. underlying calls
    06-11-11 comp/conf.sh: fix S CONF_STANDARD bug, add D to defer to native
    06-11-11 comp/conf.tab: add D to defer to native
    06-11-01 include/vmalloc.h: avoid VM_FLAGS sys/v*.h clash
    06-11-01 include/ast.h: add FMT_PARAM for fmtquote()
    06-10-31 disc/sfdcseekable.c: add SFSK_DISCARD for seekable window control
    06-10-31 comp/spawnveg.c,features/lib: handle posix_spawn exit status 127
    06-10-30 features/lib: fix posix_spawn() fork() prototype conflicts
    06-10-30 string/fmtscale.c: fix 1024 rounding bugs
    06-10-27 disc/sfkeyprintf.c: handle 'i' (=='d') -- oops
    06-10-26 sfio/sfvprintf.c: %#d => fmtscale(1000), %#i => fmtscale(1024)
    06-10-26 features/map.c: _map_libc cleanup
    06-10-26 features/fcntl: add to the circle of trust
    06-10-26 features/sys: add <sys/socket.h> socklen_t
    06-10-26 include/regex.h: handle include before <ast_map.h>
    06-10-25 astconf "SHELL" => "SH" to avoid _POSIX_SHELL conflict
    06-10-25 comp/conf.*: drop no-op duplicate conftab.c entries
    06-10-18 string/fmtscale.c: 1000: n[.]n[n](kMGTPE), 1024: n[.]n[n](KMGTPE)i
    06-10-11 ast_std.h: now implies <sys/stat.h> (did on most before anyway)
    06-10-11 strtoi.h: ignore sign for 0, validate scale shift
    06-10-11 strdup.c,vmstrdup.c: handle 0 arg
    06-10-11 add sfstruse()/sfstropen() error checks
    06-10-10 misc/procopen.c: envv==environ => don't modify environ
    06-10-10 misc/procclose.c: return valid exit(1) status
    06-10-06 port/astconf.c,comp/conf.sh,comp/conf.tab: play nice with getconf(1)
    06-10-01 comp/conf.tab: SHELL default checks { _CS_PATH } X { ksh ksh93 sh }
    06-10-01 comp/conf.sh: export CONF_getconf to shell actions
    06-10-01 comp/putenv.c: always enable setenv() for procopen()
    06-10-01 misc/procopen.c: use pathshell() or astconf("SHELL",0,0) if PARANOID
    06-10-01 path/pathshell.c: localize the shell path patterns and accept ksh93
    06-09-28 Makefile: avoid ast <stdio.h> vix iffe -X ast -- doh
    06-09-27 regex/regdecomp.c: add
    06-09-26 regex/regcomp.c: handle KRE ~(...)<invalid-kre>
    06-09-25 reorganize to avoid native header intercepts
    06-09-15 uwin/crypt.c: _UWIN only!
    06-09-14 Makefile: tweak the ast_common.h bootstrap again (finally?)
    06-09-14 misc/optget.c: noncommercial => OPT_proprietary
    06-09-12 string/strelapsed.c: fix multi-char qualifier parse
    06-09-12 string/strtoi.h: drop [cClLqQwW] multipliers
    06-09-11 misc/optget.c: add numeric arg validity check
    06-09-07 misc/optget.c,tm/tmfix.c: fix uninitialzed var refs
    06-09-05 path/pathprobe.c: add version header verification
    06-08-01 Makefile: handle iffe vs FEATURE/common vs ast_common.h
    06-08-31 Makefile: add ast_map.h to the bootstrap list
    06-08-30 misc/glob.c: fix ~(E)re bug that stripped ~(E) before regcomp
    06-08-30 include/ast.h: add { integralof(x) pointerof(x) }
    06-08-27 string/strelapsed.c: fix off-by-one (too little) parse bug
    06-08-25 misc/optget.c: 0*<n>.* numeric option args => <n>.*
    06-08-22 misc/glob.c: handle ~(...) pattern options
    06-08-16 string/strelapsed.c: fix off-by-one (too far) parse bug
    06-08-16 regex/regcomp.c: accept but ignore ~(N)
    06-08-14 features/libpath.sh: add solaris LD_LIBRARY_PATH_64 check
    06-08-05 sfio/sfpool.c: pool SF_READ|SF_WRITE loop fix
    06-08-02 misc/fts.c: fix FTS_NOSTAT optimization to check for ..
    06-07-28 include/glob.h: add gl_extra for user globlist_t expansion
    06-07-27 features/common: #include "ast_map.h"
    06-07-26 comp/fnmatch.[ch]: allow <ast_map.h> to map fnmatch()
    06-07-22 cdt: snarf from kpv
    06-07-17 string/strperm.c: perm==-1 skips umask(1)
    06-07-17 sfio/sfvprintf.c: handle format invalid mb seq
    06-07-17 regex/regcomp.c: inline REG_SHELL => anchored, otherwise not
    06-07-17 regex/regcomp.c: inline B|G:basic E:REG_EXTENDED F|L:REG_LITERAL
    06-07-17 regex/regcomp.c: inline l:REG_LEFT r:REG_RIGHT
    06-07-17 regex/regcomp.c: inline a:REG_LEFT|REG_RIGHT p:~REG_LENIENT
    06-07-17 string/chresc.c: add \Uxxxxxxxx
    06-07-17 sfio/sfstrtof.h: ignore thousands sep after decimal
    06-07-17 string/tokline.c: splice() => spliceline() for bsd
    06-06-27 features/float,sfio/sfcvt.c: fix Nan logic
    06-06-27 port/astmath.c: fix long double isnan() test
    06-06-27 features/map.c: _map_libc for std => _ast_std
    06-06-25 string/strperm.c: handle posix = w.r.t. umask
    06-06-19 port/mnt.c,features/fs: handle netbsd getmntent api change
    06-06-18 regex/regstat.c: add REG_LITERAL check
    06-06-11 cdt/dtview.c: update from kpv
    06-05-31 sfio/sfhdr.h: fix _SFOPEN() typo
    06-05-09 comp/conf.sh: add native getconf -a names to the mix
    06-04-28 misc/optget.c: add solaris long option name compatibility
    06-03-09 string/strmatch.c: add REG_ADVANCE => REG_* flags
    06-02-14 comp/iconv.c: fix uwin iconv_list() /reg/ generator
    06-02-10 port/astconf.c: relax standard prefix filter
    06-02-08 sfrd.c,sfsync.c: lock logic bug fix
    06-02-01 port/astlicense.c: add { parent incorporation }
    06-01-26 port/astconf.c: fix { LIBPREFIX LIBSUFFIX } length
    06-01-06 features/lib: change _UNIV_DEFAULT probe to use cross{...}
    06-01-04 misc/stk.c: fix n**2 realloc behavior
    06-01-01 include/sfio.h: export { _Sfi _Sfmaxr }
    05-12-13 string/chresc.c: handle \C-X => control-X, \M- => ESC
    05-11-22 regex/regcache.c: add, convert string/strmatch.c to regcache()
    05-10-06 string/ccmap.c: update ebcdic-u to be idempotent
    05-09-28 vmalloc: snarf from kpv; fixes large block brk() thrashing
    05-09-26 misc/magic.c,misc/magic.tab: handle latest vcodex header
    05-09-12 misc/optget.c: reset opt_info.offset on error
    	 string/strtoi.h: strton() '.' multiplier only if m>1
    	 string/fmtesc.c: add unadvertized FMT_PARM for FMT_SHELL
    05-09-09 string/fmtesc.c: fix FMT_SHELL logic w.r.t. [$`]
    05-08-11 string/strerror.c: fix { sys_errlist sys_nerr } prototypes
    05-08-03 sfio: snarf sfvaprints sfaprints
    05-07-21 port/astconf.c: retain most recent synthesized lookup
    05-07-20 sfio/sfsetbuf.c: default file io size now 64K on all systems
    05-07-17 ccmap*: add microfocus cobol EBCDIC_U
    05-06-29 regex/regcomp.c: fix the A & B inline flag logic
    05-06-15 include/recfmt.h: add fs format flag to fmtrec()
    05-06-14 error.c: add ERROR_OPTIONS { break count match }
    05-06-07 features/stdio: drop FEATURE/limits to fix bootstrap circular dep
    05-06-02 features/*,Makefile: drop vestigel iffeio.h bootstrap workaround
    05-05-31 string/fmtbuf.c: unlock (spin) before each return -- doh
    05-05-30 sfio/sfpkrd.c: work around macos 10.4 recv(MSG_PEEK) bug
    05-05-27 regex: add REX_NEST (?%[S.][T.][OT])
    	 magic.tab: ammend bsd db magic
    05-05-23 regex: REX_NEST (?%[D.][E.][L.][Q.][oc]...)
    05-05-21 regex: state.fold[] is now locale specific -- doh
    05-05-19 regex: add REX_NEST (?%\\()<>[]""...) %(...) nested match
    05-05-15 recfmt.h: add recstr() reclen() fmtrec()
    05-05-13 optget.c: allow boolean options to take numeric values
    05-05-12 recfmt.c: add to recfmt.h, adjust Recfmt_t encodings
    05-04-30 sfio: add sfmaxr(), default 64K
    05-04-22 comp/omitted.c: fix magic() logic for files < 512 bytes
    05-04-20 cdt: snarf update from kpv; void* Dt_t.user added
    	 misc/error.c: library => ERROR_LIBRARY
    05-04-19 regex/regcomp.c: handle REG_SHELL [^...] == [!...]
    05-04-11 tm/tmxscan.c: handle yyy.mm.dd[-+.]hh.mm.ss.nnnnnn
    05-04-07 regex/regnexec.c: fix out of bounds boundary check -- ouch
    	 features/align.c: add jmp_buf to the alignment mix (ia64)
    	 vmalloc/vmhdr.h: add jmp_buf to the alignment mix (ia64)
    05-03-31 misc/optget.c: fix option { - _ } separator matching
    05-03-30 misc/glob.c: eliminate superfluous GLOB_NOMATCH stat() calls
    05-03-24 port/astwinsize.c: include <sys/ioctl.h> if possible
    05-03-23 string/ccmap.c: add ebcdic-m mvs cobol table
    05-03-11 comp/omitted.c: handle utime[s](const,const)
    	 comp/conf.tab: fix linux PID_MAX probe
    05-03-10 comp/setlocale.c: LC_* value "" => unset -- doh
    	 misc/optget.c: reorder _PACKAGE_astsa code for msgcc
    05-03-08 misc/optget.c: delete leading space in STYLE_nroff output
    05-03-07 sfio/sfhdr.h: drop extern _sfdscan -- clashes with sfvscanf.c static
    05-03-01 tm/tminit.c: add tmlocaltime() for tzset() getenv() override workaround
    05-02-20 features/tvlib: tmsettimeofday only for systems that have settimeofday
    	 features/float: fix mvs.s390 NaN tests
    05-02-18 tm/tmxmake.c: fix <0 west of GMT bug that warped to 1800's -- wow
    05-02-11 port/mnt.c: handle lynxos MOUNTED=/etc/fstab
    05-02-08 features/float,sfio.h,sfcvt.c,sftable.c: add INF and fix NAN
    05-02-04 features/lib: add _std_strtol (for lynxos)
    	 include/ast_std.h: add _std_strtol tests
    	 comp/strtod.c: #define S2F_function strtod
    	 misc/signal.c: fix ancient bsd SV_INTERRUPT vs. SV_ABORT clash
    05-01-11 sfio/sfmove.c: try to seek(fr) when fw==0
    	 comp/omitted.c: intercept utimes() too
    	 comp/omitted.c: add DOSPATHVARS env var path value conversions
    	 features/tvlib,tm/tvtouch.c: check for utimets()
    	 misc/optget.c: handle '-' or '_' option word separators
    	 sfio/_sfopen.c: allow stream mode changes after initialization
    	 sfio: sync with kpv: SF_SYNCED fix for ksh input loss bug
    05-01-09 tm/tmxfmt.c: fix %6N for n<100000000
    05-01-08 regex/regcomp.c: conj() => con() to avoid C99 clash
    05-01-05 tm/*: fix { %U %V %W } logic -- my head hurts
    04-12-30 tm/tmxtime.c: fix tm_isdst<0 loop
    04-12-23 vmalloc/vmbest.c: fix vmresize bug that didn't 0 new data
    04-12-19 misc/optget.c: broaden - long option match
    04-12-09 string/strtoi.h: fix terabyte 't' suffix math
    	 string/strmatch.c: flush cache on locale change
    04-12-01 tm/tmsleep.c: add
    	 tv.h,tv*.c,tv.3: move from pax
    	 tmx.h,tmx*.c,tmx.3: add high resolution tm(3) counterparts
    	 features/lib: add *another* sgi linux.ia64 memccpy bug check
    04-10-31 Makefile: __OBSOLETE__ now computed <6 months ago year>0101
    	 ccode.h,ccmapid.c: add ccmaplist(Ccmap_t*) iterator
    	 option.h,optesc.c: add 3rd arg, 1 => quote '?' too
    	 misc/magic.c: fix bug that terminated `string  a' at
    	 misc/magic.c: handle vcodex() via decompose()
    	 misc/magic.tab: add vcodex magic
    	 features/stdio: handle _LARGEFILE64_SOURCE -- oops
    	 stdio/(fseek|ftell|fseeko|fsetpos|fgetpos|ftello).c: oops^2
    04-10-28 string/swapop.c: size==-4 => size=4 and extend op=3 to op=7
    	 tm/tmfix.c: fix tm_mon<0 logic
    04-10-22 tm/tmdate.c: handle 'final day feb 2004'
    	 port/astlicense.c: add query=all|id|${...}${...}
    	 port/astlicense.c: "free" => "mit"
    	 comp/omitted.c: revert to the open source license
    	 string/stropt.c: drop siz==0 => tab is hash table
    	 include/sfio.h: incorporate <sfstr.h>
    	 include/sfstr.h: drop
    	 disc/sfstrtmp.c: drop -- use sfstrbuf()
    04-10-20 misc/magic.tab: update tar magic
    04-10-18 ufc-crypt.h,crypt_util.c: drop GPL code
    	 crypt.c: add BSD code
    	 pathpath.c: disable { $0 $_ $PWD } related root search
    04-10-01 normalize ident stamps
    	 port/astlicense.c: add type=cpl -- yeah
    04-09-25 string/swapop.c: return op < size -- duh
    04-09-23 comp/spawnveg.c: :NOOPTIMIZE: -- volatile sometimes ignored
    04-09-21 comp/spawnveg.c: exec_errno_ptr is volatile -- duh
    04-09-14 tm/tmscan.c: add %| alternation and %& => tmdate()
    04-09-08 misc/optget.c: add :!value: omitted optional arg value
    	 misc/optget.c: fix --noNAME ambiguous option logic
    04-08-26 string/strperm.c: add who^mode to propagate least restrictive up
    	 astmath.c: add { frexpl ldexpl } checks for ast.req
    	 port/astlicense.c: ignore first option if non-assignment
    	 include/ast_dir.h: move d_fileno map before struct defs -- duh
    04-08-24 vmalloc/vmbest.c: add {VM_region} VMCHECK=+r for region segment checks
    	 misc/recfmt.c,include/recfmt.h: add
    04-08-23 vmalloc/vmbest.c: add {VM_primary VM_secondary} VMCHECK=-s for primary
    	 features/common: punt to <stdarg.h> for unknown va_list
    04-08-11 vmalloc: sync _UWIN libposix hooks
    04-07-27 features/common,features/limits.c: ULL suffix for unsigned _ast_int8_t
    04-07-22 include/ast.h,comp/eaccess.c: add eaccess() for effective access()
    04-07-19 comp/open.c,sfio/_sfopen.c: { O_RDONLY O_WRONLY O_RDWR } are values
    04-06-28 misc/error.c: check level after error_info.auxilliary
    04-06-24 string/strmatch.c: strgrpmatch() match[] now variable size array
    04-06-17 features/common: change _DLL null define to (the standard ast) 1
    04-06-11 misc/optget.c: allow optional [-|+|--|++] optstr() option prefix
    	 misc/optget.c: reset optstr() state on 0 return
    	 misc/optget.c: text()=>textout() linux.ppc symbol hijack workaround
    04-05-31 sfio/sfreserve.c: no side buffer if user buffer is large enough
    04-05-27 string/fmtbuf.c: handle one concurrent buf > sizeof(buf)
    04-05-24 regcomp.c: fix no-advance initialization
    04-05-05 conf.tab,conf.sh: update to align with standards
    	 magic.tab: ms suffix update
    04-05-04 port/lcgen.c: fix territory initialization
    04-04-15 tm/tmdate.c,include/tm.h: fix specific and ordinal days
    04-04-08 astconf: retain { HOSTTYPE LIBPATH LIBPREFIX LIBSUFFIX } strict vals
    04-04-07 vmalloc/vmbest.c: fix alpha tiny block bug
    	 vmalloc/malloc.c: re-enable on alpha
    04-03-30 tm/tminit.c: GMT => UCT only if tz.daylight not defined
    04-03-25 vmalloc/malloc.c: _AST_std_malloc=1 for __alpha
    	 path/pathprobe.c: per-user probe dir => $HOME/.probe/$HOSTTYPE
    04-03-23 regex/reglib.h: fix isw*() redefines
    04-03-17 features/stdio: no __FILE override for __CYGWIN_ (sys/reent.h clash)
    	 sfio/sfhdr.h,sfio/sfsetbuf.c: lower sfmove() default buf size 4x
    04-02-29 comp/omitted.c: move env trace after PATH fixup
    	 comp/omitted.c: cygwin spawn _P_DETACH => _P_NOWAIT+setpgid(pid,0)
    	 misc/optget.c: fix html mailto: match
    	 port/astlicense.c: add type=test for fixed 2001 date
    	 features/float: check local NaNQ first
    	 vmalloc/vmhdr.h: fix _vmextern_ vm_truncate return type
    	 misc/magic.tab: add elf s390 index=22
    04-02-26 vmalloc: VMCHECK a:assertions c:arena-check w:warn-instead-of-abort
    	 sfio/sfvscanf.c: fix extf arg selection
    04-02-24 features/dirent: set nodefine to avoid ast_std.h _typ_off64_t undef
    	 disc/sfkeyprintf.c: only case pattern must be ()[] balanced
    04-02-14 include/sfio_t.h: add SF_DCDOWN, SFDCNEXT(), SFDCPREV()
    04-02-13 string/strmatch.c: fix bug that didn't save one-time sub[] size
    	 vmalloc: -g: export VMCHECK=1 enable malloc/free checks
    	 vmalloc: -g: free(0) to check and disable malloc/free checks
    	 vmalloc: -g: free(1) to check and enable malloc/free checks
    04-02-11 Makefile: add :P=A: to conf and lcgen exec for cross-compile
    	 regex: use MBSIZE() instead of mbsize() to grab 1 char on err
    	 vmalloc/vmbest.c: updated to do more comprehensive DEBUG tests
    04-02-04 sfio/sfraise.c: add sfraise(0,a,b) to iterate over all streams
    04-02-01 vmalloc/vmbest.c: _BLD_DEBUG free(0) checks the arena
    04-01-31 features/vmalloc: fix typo that missed _mmap_zero
    04-01-23 string/strerror.c: handle real strerror() return value overwrite
    04-01-11 path/pathpath.c: fix size vs. sizeof(buf) typo
    03-12-22 misc/magic.tab: dos EXE tweaks
    03-12-05 vmalloc: sync with kpv, adding exceptf announcements
    03-12-04 port/astlicense.c: fix expand() loop sentinel bug
    03-12-02 include/ast.h: mbchar() advances by 1 on mbtowc() error
    	 misc/fts.c: increase MINNAME to 32
    03-11-21 vmalloc/vmbest.c: export VMCHECK=1 to enable $(CC.DEBUG) vmcheck()
             vmalloc/vmbest.c: export VMCHECK=2 to disable KPVCOMPACT
    	 misc/magic.c: add { cobol copybook pl1 } and suffix preference
    03-11-12 features/stdio: drop cuserid,getopt for SUSV3
    03-11-11 vmalloc/*: merge kpv update -- this should stomp the compaction bug
    03-10-23 comp/iconv.c: fix sfreserve lock fallback
    03-10-20 sfio/_sfopen.c: add to allow user sfopen() intercept
    03-10-17 regnexec.c: fix exec time REG_LEFT, \x.... => wctomb()
    03-10-12 string/strtoi.h: fix strton '.' overconsumption
    03-10-12 comp/iconv.c: identity is always (iconv_t)0
    03-10-09 string/fmtesc.c: fix FMT_SHELL to check for all shell magic chars
    03-10-01 port/astlicense.c: unknown authors copied verbatim (instead of ignored)
    03-09-30 string/chresc.c: handle \u..., \x... consumes all trailing hex digits
    	 string/stresc.c: \u... and \x... > UCHAR_MAX => wctomb()
    03-09-29 fnv.h: add
    03-09-23 modedata.c: table is for external modes, so no arch specific hacks
    	 optget.c: fix option prefix match translation bug
    	 optget.c: add `<length> <name>=<value> to optstr()
    	 features/lib: add memcmp() test for sgi optimzation bug
    03-09-22 regex.h,regcomp.c: add regncomp()
    	 regclass.c: fix for loop dangling ; in regaddclass()
    03-09-20 sftable.c,sfvprintf.c: fix SFFMT_CHAR handling to match extf api
    03-09-19 sfmode.c: update release to kpv's
    03-09-17 regcomp.c: add pedantic backref error checks
    03-09-16 regnexec.c: exec time REG_LEFT => don't advance past initial position
    	 regclass.c: add regaddclass() for user defined [:class:]
    	 regexec.h: REG_VERSION_N2X, add redisc_t {re_map} ccode map
    	 regstat.c: add regstat_t
    03-09-11 optget.c: --n:=v sets opt_info.assign=':', opt_info.number enabled
    03-09-09 disc/sfkeyprintf.c: *pn on lookup is arg separator; lookup "" arg too
    03-09-05 optget.c: [f:l*?] preserves user long name past '*' in opt_info.name[]
    03-09-03 sfstr.h: add sfstrpend() for #pending bytes in read buffer
    03-08-25 regex: add REG_FIRST, optimize bm
    	 features/lib: _AST_no_spawnveg==1 falls back to fork/exec
    03-08-22 features/stdio,stdio/asprintf.c,stdio/vasprintf.c: add
    03-08-21 path/pathnative.c,path/pathposix.c: interix updates
    	 features/botched: add cygwin _stat => _stat64
    03-08-15 include/ast.h: map out bsd strmode()
    	 features/common: add interix _ast_intmax_t workarounds
    	 misc/fs3d.c: 3d mount test now uses "" instead of NiL (or cygwin dumps)
    03-08-11 string/fmtesc.c: fix optional quoting checks
    	 tm/tmdate.c: fix > 1 year of seconds arithmetic
    	 tm/tmfix.c: fix leap year adjustments
    03-08-01 features/lib: beef up sock_peek test for interix
    03-07-29 features/float: add -lm to frexp... test
    	 Makefile: fix -lm astmath test sense
    03-07-26 features/mem.c: favor _mem_sbrk over _mem_mmap_*
    03-07-22 vmalloc/vmbest.c: fall back to sbrk() if mmap() fails
    	 features/mem.c: _mem_sbrk means sbrk() and brk() work
    03-07-17 regex/regcomp.c: fix bug that treated KRE X{n,m} like {n,m}(X)
    	 misc/magic.c: check MAGIC_VERBOSE for all load() messages
    03-07-14 misc/optget.c: handle [...]{[...]<.>..<.>..}
    03-06-21 misc/sigcrit.c: block SIGCHLD if _lib_sigprocmask || _lib_sigsetmask
    	 comp/spawnveg.c,sfio/sfmode.c: use sigcritical() SIG_REG_* macros
    	 comp/spawnveg.c: drop ENOEXEC logic
    	 vmalloc/*: snarf kpv KPVCOMPACT() fix
    	 vmalloc/vmbest.c: export VMCHECK=2 to disable KPVCOMPACT (just in case)
    	 string/strdup.c: drop __strdup() etc. intercepts -- malloc gets it
    	 features/mem: define _mem_method and _mem_* possible values
    	 vmalloc/malloc.c: _AST_mem_method==_mem_* to force mem get method
    	 sfio/sfputr.c: __ia64 memccpy is bogus -- how many tries do they get?
    	 path/pathshell.c: verify abs path and access(path,X_OK) -- duh
    	 vmalloc/vmhdr.h: add private _Vmessage() for non-sfio ASSERT()
    	 port/astconf.c: fix bug that always returned the minmax value
    03-06-11 comp/*.c: reorder macro hding for mvs.390 and <ast_map.h>
    	 features/vmalloc: add _lib_brk and _lib_sbrk verification
    	 include/ast_std.h,etc.: add _map_malloc for malloc => _ast_malloc
    	 comp/conf.sh: fix SI_* and *_SI_* macro redefs
    	 ast.h: VMDEBUG or _BLD_DEBUG enable <vmalloc.h> and VMFL tracing
    	 vmalloc/vmtrace.c: _PACKAGE_ast __FUNCTION__ is a string
    	 vmalloc/vmtrace.c: set trace file fd FD_CLOEXEC
    	 vmalloc/vmbest.c: set /dev/zero mmap fd FD_CLOEXEC
    	 features/mmap: fix ancient read() vs. mmap() time arithmetic typo
    	 vmalloc/malloc.c: _AST_std_malloc==1 to force standard malloc
    03-06-09 comp/omitted.c: add _imp__FUNCTION sybols for __CYGWIN__ static link
    	 vmalloc/vmbest.c: handle systems with sbrk() but no brk()
    03-06-04 port/astconf.c: drop non-standard diagnostics
    03-06-03 comp/conf.sh: rework symbol collision logic
    03-05-30 conf.tab,conf.sh,astconf.c: add <sys/systeminfo.h> sysinfo() SI_*
    03-05-29 ccode.h: rework for extensibility, drop obsolete mematoe(), memetoa()
    03-05-28 regex/*: recode to use isw*() directly when needed, is*() otherwise
    03-05-27 features/vmalloc: fix _std_malloc test
    03-05-25 misc/optget.c: fix optstr() ???* internal options
    03-05-24 misc/optget.c: fix (ancient) argv null dereference
    03-05-23 comp/getcwd.c: don't intercept on _WINIX -- unreliable st_ino
    03-05-22 sfio/sfsprintf.c: n<0 => don't append ' '
    03-05-18 misc/fts.c: re-stat FTS_DP to update nlink/times
    	 misc/fts.c: add FTSENT.stack to eliminate getlist() recursion
    	 regex/ucs_names.h: use "..." catenation to placate some cc's
    03-05-11 string/strtoi.h: handle "-" "+" "0x" "11#"
    03-05-09 vmalloc/vmbest.c: large memory allocation tweaks
    03-05-06 misc/optget.c: fix getopt_long() prefix==1 bug that missed short flags
    03-04-27 comp/system.c: handle <ast_map.h>
    03-04-24 vmalloc/vmmopen.c: drop dup <unistd.h>
    03-04-21 tm/tmdate.c: fix next hour/min logic
    03-04-15 vmalloc/malloc.c: intercept __malloc() along with __libc_malloc()
    	 string/strdup.c: intercept __strdup() along with __libc_strdup()
    	 features/mmap: consolidate from features/(lib|sfio|vmalloc)
    	 add _NO_MMAP==1 to disable all mmap()/munmap() calls
    	 path/pathposix.c: add
    03-04-14 comp/setlocale.c: fix debug_mbtowc() return value for *s==0 || n < 1
    	 comp/iconv.c: fix error return errno values
    03-04-11 misc/stk.c: fix stkgrow() realloc bug
    03-04-05 string/tok.c: support readonly single token input strings
    	 disc/sfdcdio.c: fix F_DIOINFO and FDIRECT #ifdef's
    	 include/ast_std.h: allow _LARGEFILE64_SOURCE on __hppa
    	 features/common: fix `tst _foo_' => `tst foo_' typo
    	 features/float: fix `tst _foo_' => `tst foo_' typo
    	 features/float: add FLTMAX_(UINTMAX_MAX,INTMAX_MAX,INTMAX_MIN)
    	 comp/omitted.c: fix pathconf => _pathconf => _ast_pathconf loop
    03-04-03 features/float: add _ast_no_um2fm: no usinged intmax => floatmax cast
    	 vmalloc/vmbest.c: add getenv("VMCHECK") to initialize Vmcheck
    03-03-28 include/ast_dir.h: add D_TYPE; { D_FILENO D_TYPE } must be #ifdef'd
    	 misc/fts.c|getcwd.c|glob.c,preroot/getpreroot.c: add D_FILENO #ifdef's
    	 Makefile: make sure _BLD_ast is defined for all compiles
    03-03-27 ast_vfork.h: generate from features/vfork to pick up headers/pragmas
    03-03-25 comp/omitted.c: drop free() of live environ
    	 path/pathshell.c: allow trailing .exe -- pox on that
    	 string/strtoi.h: fix bug leading 3 digits before thousands sep bug
    	 string/(fmt|str)[gu]id.c: we know root when we see it
    03-03-24 misc/optget.c: handle : and ? in := default value
    03-03-21 ast_std.h: drop all spawn*() but spawnveg()
    	 obsolete/spawn.c: add for dropped spawn*()
    	 features/lib: _use_spawnveg if spawnveg() is a win over fork()/exec()
    	 features/lib: drop NutForkExecve() and _map_spawnve
    	 features/lib: fix memccpy test to clean up /tmp droppings
    	 comp/spawnveg.c: call posix_spawn() if implemented
    	 comp/omitted.c: add spawnve() intercept
    	 comp/getoptl.c: set getopt_long() optind even if no options
    	 tm/tmfmt.c: add %Q<delim>recent<delim>distant<delim>
    	 misc/optget.c: fix trailing '*' for option and option args
    	 sfio/sfmode.c: getenv("_AST_SFIO_OPTIONS") [,]SF_LINE[,] for fd {0,1,2}
    	 vmalloc/*: kpv sync for uwin build independent of libast
    03-03-18 port/astconf.c: switch to dynamic string values (saves 7K data/bss)
    	 string/strmatch.c: switch to dynamic regex cache (saves 3K data/bss)
    	 regex/regcoll.c,ucs_names.h: initialize rw tables from smaller ro data
    	 features/lib: add vfork test for passing SIG_IGN across exec
    	 features/lib: add spawn test for passing SIG_IGN across spawn
    03-03-17 comp/omitted.c: unlink() renames to .deleted dir in case file open
    	 sfio/sfpopen.c: handle mode "" for spawn with no pipe
    	 features/float,comp/frexp.c,comp/frexpl.c: add pow2() table alternative
    03-03-12 features/lib: fix linux.ia64 memccpy() tests -- now its their turn
    	 features/vmalloc: fix /dev/zero test
    	 features/align: _ast_intmax_t and _ast_fltmax_t join the union
    	 misc/stk.c: fix struct frame size to align data
    	 disc/sfdcdos.c: change sfslen() => sfvalue(f)
    03-03-10 misc/optget.c: handle [f<:>x:lllddd]
    03-03-07 port/astconf.c: uninitialized CONFORMANCE + POSIXLY_CORRECT => standard
    03-03-05 comp/omitted.c: make sure at least /bin is in PATH to find cygwin dlls
    03-03-02 path/pathshell.c: write access to /bin is effectively root
    03-02-28 features/float: add (FLT|DBL|LDBL)_U?(LONG|LONGLONG|INTMAX)_(MIN|MAX)
    03-02-25 features/lib: change vfork() test to use _exit() instead of exit()
    03-02-23 include/error.h: update ERROR_VERSION for error_info.number space
    03-02-22 comp/conf.sh: wrap ksh check in eval to avoid premature exit
    03-02-21 misc/fts.c: verify chdir(..) to avoid malicious dir rename()
    03-02-19 string/strtoip4.c: isspace() instead of ' '||'\t'
    03-02-17 regex/regcomp.c: fix stats.l REX_REP logic that botched REX_BM
    03-02-13 string/base64.c: handle catenated encodings
    03-02-11 features/libpath.sh: change LIBPATH to <dir>[:<env>[:<pat>]][,...]
    03-02-07 path/pathfind.c: allow "/dev/null" to be PATH_REGULAR
    03-02-06 include/ast.h,fmtquote.c: add FMT_ALWAYS|FMT_ESCAPED|FMT_SHELL|FMT_WIDE
    03-02-05 tm/tmdate.c,tm/tmword.c,string/strelapsed.c: '_' treated like ' '
    03-02-01 string/strelapsed.c: handle ps style [day-][hour:]min:sec
    03-01-31 port/astlicense.c: fix author=* match
    03-01-30 include/tm.h: add tmisleapyear() macro
    03-01-29 comp/getopt.h,comp/getoptl.c: add gnu getopt_long(), getopt_long_only()
    	 include/ast_getopt.h: for non-gnu part of comp/getopt.h
    	 include/ast_std.h: include <ast_getopt.h> instead of <getopt.h>
    03-01-28 ast.h,string/base64.c: add base64encode() and base64decode()
    	 path/pathfind.c: verify S_ISREG()
    03-01-24 path/pathexists.c: fix abs dir bug and deal with case ignorance
    03-01-23 path/pathpath.c: honor PATH_ABSOLUTE for the easy case too
    03-01-22 path/pathprobe.c: fix search to find both the probe script and command
    03-01-17 misc/magic.tab: application/zip => appplication/(gzip|pzip|zip)
    03-01-14 misc/optget.c: change href="" to href="."
    03-01-10 include/ast_std.h: strtold() import hackery for static __CYGWIN__
    03-01-03 include/regex.h,regex/regcomp.h: add REG_SHELL_GROUP
    	 include/ast.h,string/strmatch.c: add STR_GROUP for REG_SHELL_GROUP
    02-12-15 include/error.h: errorcontext => Error_context_s (compatible til 2004)
    02-12-06 misc/sigdata.c: add NoF(sigdadata) -- why nmake was uninterruptable!
    02-12-03 comp/omitted.c,features/omitted: handle cygwin alarm() return botch
    02-11-27 misc/swapop.c: op=3,size=4 => op=7
    	 string/strlcat.c,strlcpy.c: fix uwin decl clash
    02-11-26 sfio/sfvprintf.c: fix sfsprintf() ' ' termination bug
    02-11-22 misc/glob.c: move static struniq() to libast extern
    	 string/fmtversion.c,include/ast.h: add fmtversion
    02-11-18 string/strncopy.c: add
    	 misc/magic.tab: list size for magicid.h magic
    02-11-14 sfio/sfvprintf.c: add %#c for C escapes
    	 include/error.h: add ERROR_NOTIFY context flag for builtin commands
    02-11-11 string/strtoi.h: add S2I_size for strnto*() size_t 2nd arg
    	 sfio/sfstrtof.h: add S2I_size for strnto*() size_t 2nd arg
    	 comp/putenv.c: add setenv() and unsetenv() wrappers for setenviron()
    02-10-31 path/pathfind.c: add dir of including file to the pathinclude() list
    	 misc/optesc.c: add
    02-10-30 string/strtoip4.c: set next char pointer even on error
    02-10-29 comp/resolvepath.c: add (size_t version of realpath())
    	 misc/mime.c: fix mimehead() to ignore null content values
    02-10-28 misc/glob.c: add GLOB_STARSTAR for /**/ and GLOB_NOTDIR optimization
    02-10-27 string/struniq.c: add
    02-10-23 features/common: fix off-by-one loop check
    02-10-18 include/ast_std.h: avoid off_t,ftruncate,lseek,truncate redefinitions
    02-10-17 misc/mime.c: handle type/* match, fix bogus header parse
    02-10-04 sfio/sfstrtof.h: S2F_static <0:export =0:private >0:static
    02-10-02 features/common: don't define _WIN32; define _WINIX => unix on windows
    	 features/tty: finally stomp the bsd _POSIX_VDISABLE redefinition
    	 misc/fastfind.c: add more specific findwrite() error messages
    	 comp/omitted.c: fix cygwin utime() to update st_ctime
    	 comp/strtol.c,strtoul.c: __CYGWIN__ static link workaround XXX
    	 string/fmtls.c,fmttime.c: tmform() => tmfmt()
    02-09-22 port/astconf.c: return values in fmtbuf() buffer instead of stack
    	 port/mnt.c: don't set MNT_REMOTE for win32 ?:paths
    	 sfio/sfvscanf.c: _sfdscan() is library global (not static)
    02-09-21 path/pathkey.c: add tool arg for mamake compatible hash
    	 features/fcntl.c: handle iffe _hdr_lcl_* => _lcl_* change
    02-09-15 comp/conf.sh: fix enum vs. macro test
    	 cdt: kpv sync
    02-09-11 ast.h,features/common: move _WIN32 macro init to features/common
    	 features/common: enable __EXTERN__ and __DEFINE__ for _WIN32&!_UWIN
    	 features/float: add -lm to _ast_*_nan_init tests
    	 vmalloc: kpv sync with vmresizef => vmgetmem
    	 features/iconv: must have both <iconv.h> and iconv_open()!
    	 features/vmalloc: alloca test must compile *and* link
    	 sfio/sfvscanf.c,sfstrtof.h: add flag arg to char get, fix NaN loop
    02-09-10 vmalloc/vmhdr.h: enable getpagesize() and sbrk() prototypes
    	 features/fcntl.c: enable mmap64() prototype
    	 include/ast_windows.h: windows.h wrapper with ast namespace workarounds
    02-09-07 misc/mime.c: fix quoted value parse bug that ate the whole line
    02-09-05 features/vmalloc: add free() to _std_malloc test
    	 include/ast.h: NoF(x) now defines _DATA_x for !_BLD_DLL too
    	 tm/tmlocale.c: { C POSIX en } == unix dadgummit
    02-08-29 path/pathfind.c: initialize Dir_t.next=0
    02-08-28 uwin/rint.c: update
    	 features/libpath.sh: "bin" is now the default value
    02-08-22 vmtrace.h: add for debugging
    02-08-20 misc/magic.c: convert to use <cdt.h>
    	 vmalloc/vmresizef.c: add for generic discipline resizef default
    	 string/strelapsed.c: allow long time component names
    02-08-19 misc/optget.c: add `.fp 5 CW' to --nroff output
    	 string/(fmtfs|fmtuid|fmtgid|strgid|struid).c: convert to use <cdt.h>
    	 include/dt.h,cdt/dtnew.c: add for dtopen() in specific vm region
    02-08-13 comp/omitted.c: fix bzero logic for e.g. unixware.i386
    	 include/ast.h: add fmtbase->fmtbasell; swap in 2003-09-01
    02-08-12 regex/regnexec.c: fix REG_MINIMAL REX_DOT mb bug
    02-08-08 features/iconv: <ast_common.h> instead of <sys/types.h> <ast_common.h>
    02-08-07 regex/regcomp.c: recognize anchors in BRE subexpressions
    02-08-06 comp/iconv.c: handle win32 cpNNNN == windows-NNNN aliases
    02-08-05 cdt/*: sync with kpv src
    02-08-02 features/iconv: include sys/types.h for ast_types.h
    02-08-01 misc/magic.c: magic file "." names the default
    	 misc/magic.c: handle addr type (from irix string)
    	 features/lib: move malloc tests to features/vmalloc
    	 features/vmalloc: snarf tests from features/lib
    	 vmalloc/*: sync with kpv src
    	 comp/libc.c: dropped -- __libc_* intercepts moved to vmalloc/malloc.c
    02-07-30 features/lib: handle __libc_malloc() in _std_malloc test
    	 vmalloc/malloc.c: add gnu pvalloc()
    	 features/vmalloc: fix alloca check
    02-07-29 features/limits.c: handle netbsd guards
    02-07-27 sfio/sfpoll.c: handle rw pipes
    02-07-25 features/iconv: include ast_types.h for size_t in ast_iconv.h
    02-07-18 apply LARGEFILE64 header prototype clash patches
    	 misc/optget.c: __EXTERN__ _opt_info_ instead of opt_info
    02-07-17 ast_std.h: memzero() now defaults to memset() instead of bzero()
    02-07-16 ast_std.h: add ast.env_serial
    	 misc/setenviron.c: increment ast.env_serial
    	 include/tm.h: tmset() now calls tminit() directly
    	 tm/tminit.c: check ast.env_serial for env change
    	 tm/tmfix.c: speed up for large values of tm_mday
    02-07-15 comp/fnmatch.c: fix memory leak caused by missing regfree()
    	 comp/strstr.c: fix broken interpretation and implementation
    	 comp/iconv.c: intercept (but no-op) null to and from buffer pointers
    02-06-27 ast_std.h: map _sysconf => _ast_sysconf for sun
    02-06-26 cdt,sfio,vmalloc: kpv sync -- is this ever easy?
    02-06-24 sfio: kpv sync, vfwscanf(),fputw() fix (wcslen(x)*sizeof(wchar_t)!!)
    	 misc/fts.c: fix symlink chdir() optimzation bug
    02-06-11 sfio/sfwrite.c: string to file fix
    	 Makefile: __OBSOLETE__==20020101
    02-06-01 regex/regcomp.c: REG_DELIMITED now consumes the delimiter
    02-05-31 regex/reglib.h,regcomp.c,regnexec.c: null subexpression fixes
    02-05-24 misc/fts.c: disable dir link counts in 3d
    	 misc/magic.c: fix "*(mkfile)" sh pattern to "*@(mkfile)"
    02-05-20 regex.h,regex/regsubcomp.c,regex/regsubexec.c: add
    	 regex/regsub.c: deprecate
    02-05-16 tm/tmfix.c: fix '60+n min/sec ago' bug for n min/sec after the hour
    02-05-14 regex/regsub.c: fix (^|x) null match early termination bug
    02-05-13 dir/dirlib.h: drop errant extern==__EXPORT__
    	 features/uwin: add uwin lib tests
    	 uwin/*.c: check features/uwin for stubs
    	 features/float: add nan representation generation
    	 sfio/sftable.h: used _ast_*_nan_init for huge values
    02-05-09 misc/fts.c: fix virtual top to force ``child'' stat()
    	 features/common: define va_copy() only if not in <stdarg.h>
    02-05-01 string/strtoip4.c: cisco inverted quad mask must have 4 parts
    02-04-30 misc/magic.tab: fix pzip version check
    02-04-19 string/strtoip4.c: handle cisco inverted quad mask n.n.n.n/i.i.i.i
    02-04-18 misc/fts.c: add chdir() verification stat() optimizations
    	 path/pathkey.c: check PROBE_ATTRIBUTES for list of vars
    02-04-12 port/astlicense.c: type=open tweak, fix author list spacing
    02-04-11 regex/regcomp.c: check for pattern number overflow
    02-04-05 tm/tmfmt.c: add %u
    02-04-04 sfkeyprintf.c: fix %c numeric value
    	 path/pathpath.c: check plain path first -- duh
    02-04-03 misc/fts.c: fix (FTS_PHYSICAL|FTS_NOSTAT) stat optimizations
    	 ftwalk.c: only clear FTW_DELAY if FTW_CHILDREN
    	 ftwalk.h: add FTW_NSOK for FTW_DELAY
    02-03-29 ast.h: drop strerror() prototype -- already in <ast_std.h>
    	 features/stdio: check for _SFIO_H redundant _Sfstd* declarations
    02-03-26 misc/glob.c: fix GLOB_LIST gl_flags values
    02-03-24 port/mnt.c: update bsd fstype name and mount option logic
    02-03-23 Makefile: add ast_wchar.h to the .check.hdr list (for mamake)
    02-03-17 features/stdio: hack around g++ 3.* clashes
    	 Makefile: add ast_nl_types.h to the .check.hdr list (for mamake)
    	 string/strtoip4.c: fix validity check bug that only checked last part
    02-03-14 misc/optget.c: fix --keys to not expand inline <.>..\f
    02-03-12 port/astlicense.c: add type=free
    	 path/pathaccess.c: sibling ".." search ignores relative dirs
    	 sfio/sfvscanf.c: sfstrtof get() must return 0 on eof
    02-03-11 path/pathexists.c: check path by pairs checking {ENOTDIR,ENOENT}
    02-02-14 features/float: copy local min/max macros to avoid printf roundoff
    	 features/wchar: include <ast_common.h>, not <ast_std.h>
    	 misc/magic.c: match[]=>matches[] to fix K&R match() macro conflict
    	 include/vmalloc.h: include <stdlib.h> for !_PACKAGE_ast
    	 uwin/mini.sym: add sprintf (now required by features/common)
    	 regex/regnexec.c: truncate wide chars for <ctype.h> functions
    	 Makefile: fix MAM ast_common.h sequencing bug by making it first
    	 cdt/dthash.c: fix DT_DELETE memory leak (DT_DETACH typo)
    	 cdt/dthash.c: fix DT_DELETE double free (dt->data->here typo)
    	 regex/regcomp.c: fix recomb() to reject RE with backref
    	 features/iffeio: explicitly generate stdio.lcl
    	 stdio: add {fcloseall,f(get|put)s_unlocked,fmemopen,getdelim,getline}
    	 tmmake,tmtime: allow negative time_t if native localtime/gmtime do
    	 tmdate: allow years before 1969
    	 fmtfmt: add
    	 include/ast.h: add { PATH_TOUCH_CREATE PATH_TOUCH_VERBATIM }
    	 Makefile: add std/*.h for std header iffe overrides
    	 comp/iconv.c: fix non-C win32 sfreserve() loop
    02-02-11 features/common: separate long long / long double tests
    	 features/common: verify printf handles long long / long double
    02-02-02 include/ast_std.h,sfio/sfhdr.h: drop _hdr_locale tests -- always on now
    	 include/ast_std.h: trust _UWIN <unistd.h>
    02-01-31 port/mnt.c: add aix options field
    02-01-30 comp/strstr.c: add for ancient s5
    	 stdio/_flsbuf.c: only on systems that transfer to native (e.g., uwin)
    	 string/strtoi.h: cat min/max error return values
    02-01-28 features/tty: add cf[gs]et[io]speed macros for <termio.h>
    	 comp/rename.c: punt to (ancient) /usr/lib/mv_dir on EISDIR
    02-01-24 sigcrit.c: fix SIGCLD!=SIGCHLD interrupt loop
    	 sfvprintf.c: convert fast io macros to functions for uts.390 cc
    	 string/strtoi.h: drop #pragma prototyped for standalone sfio
    	 sfdcsubstr.c: rename from sfdcsubstream.c for 14 char fs
    02-01-22 execlp,execvp,execvpe,spawnlp,spawnvp,spawnvpe: fix __EXPORT__
    	 spawnlp,spawnve,spawnvp,spawnvpe: handle ms mode arg -- barf
    	 sftable.c: ifdef hacks for _WIN32&_ALPHA_ fp exception
    	 _stdfun.c: add _UWIN&_ALPHA_ iob map
    02-01-18 sfio/sfstrtof.h: drop #pragma prototyped for standalone sfio
    02-01-17 features/hdr: don't include <stddef.h> after it doesn't check out!
    02-01-16 misc/magic.c: add version type for YYYYMMDD or [a.][b.]c.d
    	 misc/magic.c: recode mime %s parse -- sensible and no buffer overflow
    02-01-15 misc/magic.tab,magicid.h: add generic binary magic number and header
    02-01-12 tm/tmlocale.c: override win32 default date for {C,POSIX,en} locales
    	 comp/omitted.c: fix cygwin workaround logic bugs
    02-01-09 stdio/fseeko.c,ftello.c: add from UNIX98
    02-01-08 comp/conf.sh: use $cc instead of cc
    02-01-07 string/strlcat.c,string/strlcpy.c: add bsd api
    01-12-18 comp/conf.tab: fix LFS_CFLAGS default for sun _CS_LFS_CFLAGS botch
    	 features/common: add hdr stdarg test
    	 tm/tmdate.c: handle YYYY/MM/DD
    01-12-10 misc/magic.tab: add generic 0x00010203 binary magic
    01-12-03 path/pathprobe.c: return HOME relative path if readonly/non-suid fs
    01-11-30 misc/optget.c: add simple cache for repeat offenders (like ksh read)
    	 sfio/sfhdr.h: preserve errno across SFMMSEQON-SFMMSEQOFF
    01-11-29 magic.tab: fix GIF version number listing
    01-11-28 string/fmtbase.c: p!=0 => base always included in output
    01-11-26 misc/fts.c: empty path is an error
    01-11-14 misc/optget.c: fix --?+SECTION queries to include paragraphs
    01-11-20 regex/regnexec.c: fix REG_MINIMAL character class match bug
    01-11-19 features/lib: retain _lib_confstr for all solaris releases
    01-11-16 comp/setlocale.c: fix !_lib_setlocale typo
    01-10-31 regex/ucs_names.h: add string catenation to keep line length low
    	 misc/fastfind.c: handle gnu slocate db read
    	 misc/optget.c: add --?+SECTION queries
    	 comp/fnmatch.h: add FNM_NOSYS
    01-10-30 tm/tmdate.c: fix cron specs when both wday and mday are specified
    01-10-20 misc/glob.c: fix bug that called  trim() twice on same path
    	 misc/glob.c: fix  trim() bug that restored / to wrong position
    	 string/fmtre.c: fix { ^ . $ } translations
    	 misc/optget.c: use original string if translation fails -- duh
    	 sfio/sfhdr.h: assume <errno.h> assigns proper atttibutes to errno
    	 comp/regcmp.c: __ia64 workaround fixed by proper CC.DLL probe
    	 comp/getdate.c: __ia64 workaround fixed by proper CC.DLL probe
    	 features/lib: add lib getdate
    01-10-18 features/lib: check for strtod static link collision
    	 features/float: add another signed cast for old bsd cc
    	 features/wchar: add <stdlib.h> <stdio.h> before <wchar.h> for old bsd
    01-10-17 sfio/sfcvt.c: limit max precision to { FLT_DIG DBL_DIG LDBL_DIG }
    	 sfio/sfcvt.c: fix %[aA] format to always have leading 0[xX]1.
    	 sfio/sfvprintf.c: handle %C %lc %S %ls for wchar_t args
    	 sfio/sfvscanf.c: handle %C %lc %S %ls for wchar_t args
    	 string/fmtmode.c: fix bug that omitted trailing ' '
    01-10-12 misc/optget.c: . => . for --??nroff
    	 comp/wc.c: fix mbstate_t initialization typo
    	 features/float: fix max integer / float loop termiation
    	 features/float: fix LDBL_UINTMAX_MAX typo that did DBL_UINTMAX_MAX
    01-10-11 include/sfio.h: fix _Sfstd* import/export
    	 features/common: fix _UWIN __DYNAMIC__() definition
    01-10-06 features/fcntl.c: { O_BINARY O_TEXT } default to 0
    	 features/omitted: add for comp/omitted.c
    	 sfio/sfopen.c: O_BINARY default for _WIN32&&!_UWIN
    01-10-05 misc/glob.c: fix `\(x/*' GLOB_NOMATCH bug that returned `(x'
    	 misc/optget.c: fix localization lookup that didn't drop doubled : ? ]
    01-10-04 comp/setlocale.c: handle sizeof(wchar_t)!=4 in debug locale
    	 comp/conf.sh: handle sytems where _SC_* is both an enum and a macro
    01-09-25 astconf: add LIBPREFIX
    01-09-20 features/common: add __DYNAMIC__() for dll externs
    01-09-19 cdt: kpv update
    	 mb*() macros: update for ksh conversion, extend debug locale
    01-09-16 tm/tmlocale.c: add compiled in defaults for C locale
    	 misc/glob.c: add gl_nextdir callback for GLOB_COMPLETE
    01-08-14 clarify _WIN32 vs. _UWIN vs. __CYGWIN__
    	 tminit: fix standard & daylight initialization
    01-09-11 pathnative.c: add for native fs representation
    	 regex.h: fix regerror_t prototype
    01-09-04 regex/regnexec.c: fix REG_ICASE for multi-char collating elements
    	 tm/tmlocale.c: fix old ascii LC_TIME load
    	 locale*: add new LC_* categories
    	 comp/omitted.c: add CYGWIN workarounds
    	 features/lib: add CYGWIN workarounds
    01-08-11 features/common: some compilers have long long but no LL constants!
    	 features/lib: add mmap64 implementation test (for linux.s390)
    	 regex/regcomp.c: fix  in [...] parse
    	 setlocale: retain user locale spelling in setlocale() return value
    	 features/limits.c: don't include ./limits.h -- duh
    	 fmtesc: don't escape multibyte chars
    	 tm/tmlocale.c: fix native C locale default
    01-08-08 features/float: some compilers (msdev) forget long long vs. double
    01-07-31 misc/optget.c: handle suboptions
    01-07-27 cdt.h: add DTDISC()
    01-07-17 iffeio.h: move to include for stdio bootstrap iffe workarounds
    01-06-25 regex: perl extensions added and tested
    01-06-21 misc/error: add ERROR_OPTIONS=prefix=string for message processing
    01-06-15 string/chresc: only 2 hex digits max for \xxx
    	 regex/regsub: handle REG_SHELL ~(nnn) rhs backrefs
    01-06-11 regex: handle embedded   in pattern and subject string
    	 regex: add (?nnn) for backrefs > 9
    	 comp/fnmatch: add FNM_LEADING_DIR for gnu compatibility
    	 features/float: _ast_flt_unsigned_max_t for bsd.i386 omission
    01-06-06 misc/optget.c: add o option for old ps,ar,tar with optional leading -
    	 regex/regcomp.c: REG_LENIENT|REG_DELIMITED \<newline> => <newline>
    	 regex/regcomp.c: REG_LENIENT  00 => NUL
    01-06-04 features/dirent: replace Makefile hack with iffe semi-hack
    	 regex/regnexec.c: negation must also check REG_SHELL_DOT
    01-06-03 sprintf.c: change buf size from SF_BUFSIZE to INT_MAX
    01-05-31 glob: fix gl_fignore to ignore leading . by default
    	 features/lib: add botch_d_ino_dirent64 for linux botch
    01-05-25 port/lc.tab: add a few missing language_territory's
    01-05-23 string/chresc: \C[.collation-element.]
    	 fmtmatch,fmtre: update for <regex.h> syntax extensions
    01-05-21 regex: add perl extensions, unicode names for collation elements
    01-05-11 string/chresc: \ == \E == escape, X == control X, \x{..} == \x..
    01-05-09 path/pathtemp.c: pathtemp(0,0,0,"/private",0) for mode S_IRUSR|S_IWUSR
    	 port/touch.c: handle utime(2) EPERM to fix bug that truncated
    	 regex: change REG_MINIMAL to avoid negation -- much faster now
    01-05-08 *.h: add some off_t macro guards for suse linux
    01-05-03 regcomp.c: optimize ((x)!)* to ((x)!)
    	 wchar: add <wchar.h> and stdio wchar routines
    01-05-02 feaures/wchar: add <wchar.h> intercept, add stdio wchar functions
    01-05-01 string/strtoi.h: signed strtoi accepts qualified unsigned constants
    01-04-30 comp/setlocale.c: fix code that relied on 2 simultaneous getenv()'s
    	 tm/tmlocale.c: check for UTF-8 encoded LC_TIME files
    	 misc/magic.tab: add utf-8 and utf-16 U+FEFF magic
    01-04-26 features/common: some cc's have _ast_int8_t but not LL constants
    01-04-24 features/lib: add _std_strtod for mac os X
    01-04-23 ccode: add CC_sub for ms embedded EOF char on ebcdic -- no joke
    01-04-20 iconv: handle ebcdic<=>utf
    	 mc.h,mc.c: add mcindex()
    	 ast_std.h: add AST_MESSAGE_SET
    01-04-18 features/libpath.sh: fix mvs probe
    	 *: sundry mvs fixes
    	 glob: fix GLOB_NOCHECK to avoid stat() and properly trim patterns
    01-04-01 strtod,strtold: add
    	 strtol,strtoul,strtoll,strtoull,strton,strtonl: handle locale & ERANGE
    	 sfvprintf,sfvscanf: handle locale decimal_point,thousands_sep
    	 sfvprintf,sfvscanf: handle %a,%A
    	 setlocale: add LC_NUMERIC decimal_point,thousands_sep init
    	 ast_std.h: __OPTIMIZE_SIZE__==1 to disable non-std __GNUC__ inlines
    	 pathexists: path cache to cut down pathpath() access(2) calls
    	 features/stdio: __FILE_TAG == _sfio_s for solaris
    01-03-23 iconv: fix iconv_move buffer boundary bug that stopped at 1 block
    01-03-19 glob: add GLOB_AUGMENTED
    	 regex: REG_SHELL syntax error implies REG_LITERAL match
    	 strto[ln][ll]: add overflow checks
    01-03-17 locale: reimplemented to provide canonical locale namespace
    	 locale: add LC_ALL=local for local system user default
    	 tm.h: TM_*_3 => TM_*_ABBREV
    	 tmfmt: handle standard E and O format modifiers
    	 tmlocale: consult nl_langinfo() if defined
    	 fmtquote("
    01-03-08 regex: handle multibyte chars and collation classes
    	 strmatch,strgrpmatch: now a wrapper on regex
    	 ast_std.h: add mb*() multibyte and collation support
    	 sfvscanf: handle locale decimal and thousand
    	 proc*,system: handle ignored SIGCHLD
    	 sfkeyprintf: handle %*C
    01-03-06 locale: add locale data cache for efficient multiple locale switching
    	 optget: fix LC_MESSAGES!=C --man bug
    01-03-01 Makefile: HEADEROPT is not optional for win32.*
    	 comp/syslog.h: comply with the de factos
    	 optget(): fix <.>..< >stack bug that referenced data after pop
    01-02-27 *locale*: a batch of fixes for native LC_MESSAGE&LC_TIME hooks
    01-02-22 pathprobe: reprobe test now checks probe.ini too
    	 sfio_s.h: advertize public Sfio_t members with _ prefix
    	 sfio.h,features/stdio: add <sfio_s.h> reference
    	 sfhdr.h: map <sfio_s.h> _foo to foo
    	 sfio.h: SF_APPEND=>SF_APPENDWR, SF_CLOSE=>SF_CLOSING
    01-02-14 comp/conf.sh: probe <unistd.h> for _(CS|PC|SC)_* getconf symbols
    	 stdio/*: update for uwin stdio.dll binary compatibility
    	 sfread: finally fixed premature pipe read EOF bug
    	 fmtscale: format tenths for number > 0 && number < 10
    01-02-09 _sfmode(),_sftype(),_Sfextern: UWIN binary stdio compatibility exports
    01-02-08 sfgetm,sfputm,_sfputm: fix max clash with k&r max() macro
    	 setlocale: undef valid for sun4 k&r valid() macro
    01-02-07 catopen.c: don't do native catopen for the debug locale
    01-02-06 sfraise.c: add SF_FINAL check to avoid (posibly) freed disciplines
    01-01-01 features/common: fix uwin __DEFINE__
    	 sftable: initialize decimal and thousand
    	 magic.tab: add corel wordperfect document
    	 syslog: add LOG_LEVEL, add ' only if needed
    	 include/tm.h: #undef daylight for _WIN32
    	 sfio.h: add _SF_APPEND and _SF_CLOSE for native namespace incursion
    	 ast_std.h: add AST_LC_multibyte for MB_CUR_MAX>1
    	 setlocale: set AST_LC_multibyte
    	 strmatch: check AST_LC_multibyte
    	 features/limits.c: add _BITS_POSIX1_LIM_H guard for linux
    	 features/libpath.sh: fix for aix LIBPATH
    	 procopen,procclose: block SIGCHLD if PROC_FOREGROUND (e.g., system(3))
    	 optget.c: add enumerated option argument values
    	 optget.c: add <!--INTERNAL--> for private --html
    	 optget.c: fix memory leak that hit shell builtins hard
    	 sfio: drop sfread small chunk logic
    00-12-25 mnt.c: handle " and ' quoting for fstab
    	 sftmp.c: let pathtemp() open the fd O_EXCL
    00-12-15 conf.sh: add -v for verbose trace
    	 features/(limits|unistd).c: no FEATURE/types because of _POSIX_SOURCE
    	 features/time: add default for CLOCKS_PER_SEC
    	 features/lib: std_malloc now handles NeXT
    00-12-13 strton: recognize qualifier only if preceded by a digit
    	 features/lib: change return in vfork() test to exit() for linux sparc
    	 fmtquote: fix $'...' quote logic
    00-12-11 tmdate: fix cron format bug that mishandled months
    00-12-01 optget: handle $Id: ... $ in --?-version
    	 features/fcntl.c: fix _STDPP_ mmap munmap
    00-11-27 magic: drop dup sfclose() in load()
    	 optget: handle error_info.id==0
    00-11-22 features/stdio: add _FILEDEFED for sol9.sun4
    	 strton,stronll: handle [u|U][l|L][ll|LL] qualifiers
    00-10-31 tmdate: add TM_DATESTYLE and mmddHHMM[cc]yy
    	 astlicense.c: #include <hashkey.h> MAM workaround
    	 astlicense.c: check for non-empty CONTRIBUTORS
    00-10-26 features/stdio: add _FILE and __FILE for gnu
    	 misc/stk.c: fix stack pointer check off-by-one (dgk does it too!)
    00-10-23 syslog.h: sync with bsd values
    00-10-18 _STUB_* now functions instead of common symbols
    	 all extern data declared with definition to eliminate common symbols
    	 fastfind: add mac/bsd /var/db/locate.database
    00-10-17 features/lib: add apple osX (darwin.ppc) workarounds
    00-10-12 add: fmtbuf(), fmtclock(), fmtip4(), strtoip4()
    	 fmt*() now use fmtbuf() for tmp fmt buf allocation
    00-10-05 regex: add REG_DISCIPLINE and regdisc_t for alloc/error disc
    00-09-29 features/lib: pipe_rw==0 for sgi: boot rw == bin incompatibility
    00-09-21 astlicense: handle ' and
    00-09-20 sfwrite: fix write() error in sfprintf() loop
    00-08-11 hdr,vmhdr.h: check/hide { getpagesize sbrk } prototypes
    	 astlicense: add noncommercial
    00-07-31 fflush: don't seek on pipes
    	 sfresize: add
    	 setlocale: fix bad newof() call
    00-06-01 strmatch: initialize match.current.beg[0] to avoid dump at line 670
    	 sfio/stdio: a few more errno tweaks
    	 astquery: sfstdin/sfstderr by default
    00-05-26 sfmode: errno=EBADF for invalid stream use
    00-05-22 rewind: fix for xopen test
    00-05-18 mcfind: returns absolute path
    00-05-16 optget: --keys must catch <.>..< >too
    	 translate,mc: errno cleanup
    00-05-09 magic: add netbsd binary magic
    	 fts: PATH_RESOLVE!=logical => FTS_SEEDOTDIR
    	 ftwflags: call fts_flags()
    	 astconf: astconf(0,0,0) re-syncs with _AST_FEATURES
    00-05-08 optget: --usage & --keys for last -catalog group only
    00-05-02 iconv.c: add; use codes[] in ccmapid() and ccmapname(); "" for native
    00-05-01 pathtmp: copy env values (libshell or putenv may change)
    00-04-01 optget: drop bar from [-foo?bar] for --??keys
    	 sfvscanf: add %X -- duh
    	 features/common: fix va_listval() for power pc
    	 findopen: fix FIND_GENERATE codes file search
    	 magic: add ERROR_translate() and msgcat.key
    	 tmlocale: add for LC_TIME locale info
    	 tmlex: check tm_info.format and tm_data.format
    	 tmfix: fix for tm_wday special case (via nl_langinfo on LC_TIME fields)
    	 strftime: fix for nl_langinfo special case
    	 ast_std.h: provide LC_* defauls if not defined
    	 sfnew: check ${_AST_sfio_bufsize} -- don't tell kpv
    	 catopen,nl_types.h: add intercept to mc* routines
    	 magic.tab: add ast message catalog
    	 strerror: add _ast_strerror intercept with ERROR_translate("errno")
    	 fmtquote: escapes >0177 only if (flags&2)
    00-03-17 feof: stdio macro functions only for _UWIN
    	 optget: proper ERROR_translate() calls
    	 astgetconf: add for thread safe error message control
    	 astlicense: fix type=special but with non-null notice
    	 errorx: add for ERROR_translate() support
    	 ERROR_translate: add locale id args for alternate dictionary
    	 option.h: move _OPT_PRIVATE_ to pointer to avoid dll size mismatch
    	 ftwalk: fix FTW_CHILDREN bug that hit top level non-dirs twice
    	 translate.c: default error_info.translate
    	 astconf: fix dup loop thrash that never returns, add _AST_VERSION
    00-03-10 ast_std.h: do _LARGEFILE_SOURCE initialization before std headers
    	 fmtquote: handle $'...' quotes
    00-03-07 optget: fix numeric option support test
    	 sfkeyprintf: add %q for '...' quoting with ansi escapes
    00-03-06 features/stdio: fix _sfflsbuf prototype (dingold@gte.net)
    00-02-14 pathtmp: fix pid cache bug that sometimes repeated after ~10 attempts
    	 optget: "..." attribute quote
    	 pathfind: eliminate *: prefix in lib, not type
    	 proc: PROC_FOREGROUND for system(3) semantics (wait status return)
    	 pathtmp: fix mktemp() logic
    	 fts: fix FTS_NOSEEDOTDIR bug that botched ./* in top list
    	 include/ast/prototyped.h includes include/prototyped.h
    	 pathpath: fix strdup(0) bug
    	 optget: --html <foo@bar> => ...mailto:foo@bar...
    	 sscanf: fix sfsscanf => sfvsscanf typo
    	 magic.tab: strengthen tar recognition
    00-02-08 conf.sh: fix ifdef for systems that think sysconf(FOO) is const
    00-02-04 glob: fix globlist_t.gl_flags
    00-02-02 vm*: add NoF() for data only files
    00-01-27 fts: fix top level .==.. statp bug (thanks to dr. ek)
    00-01-25 conf.tab: fix LFS*_*LAGS typo
    00-01-24 astlicense: handle type=verbose, license.notice, author=*
    00-01-11 pathprobe: generate info for first probe script on PATH - duh
    	 ast.h: add NoF(x) for files that define no functions
    	 tmpfile: fix implementation
    	 global change for string ERROR_translate() dictionary names
    	 optget: fix new way but no long names off by one
    	 optget: handle [--dictionary?name]
    99-11-19 comp/conf.sh: `expr length XXX` is not universal
    	 drop sfstdio; stdio via functions everywhere
    	 drop Makefile conditionals (and follow our own advice for once)
    	 sfio: new stream after atexit() bug fix
    	 tm: Tm_zone_t.daylight=0 for standard time within zone
    	 stdio: fopen => _ast_fopen: only way short of binary compatibility
    	 Makefile: atmain.C falls back to atmain.c
    	 optget: add --keys, s<section> option
    	 stdio: _UWIN check for foreign stdio
    99-11-11 astlicense: add
    99-10-31 glob: fix regexec pattern; add PATH_ATTRIBUTES case check
    	 pathpath: path==0 means malloc space
    99-10-22 tmfmt: %C=2-digit-century, %k=date(1), %y=2-digit-year-in-century
    99-10-18 fastfind: expanded default db lookup
    99-08-11 magic: fix off by one registry malloc
    	 features/fs: add __RENAME checks for stat familiy (netbsd)
    	 features/fs: major()/minor() fixes for s5
    	 features/libpath.sh: netbsd fix -- ld.so not in std places
    	 misc/fastfind: fix codes path generation bug
    	 optget: beef up --?* description, fix <TR>...</TR> nesting
    	 pathprobe: check for override (writable key file) first
    	 features/time: int tmtimeofday(struct timeval*);
    	 optget: fix opt_info.num, even if opt_info.arg!=0
    	 fts: FTS_PHYSICAL => FTS_SEEDOTDIR, add FTS_CHOP
    	 fastfind: init dir tab with logical and physical name
    	 glob: add gnu GLOB_ALTDIRFUNC
    99-07-17 sfio: kpv update and sfhdr.h sync!
    99-06-24 stdio: fix fflush() to ignore sfseek(0) return value
    99-06-23 magic: '\r' is text not control to placate m$
    99-06-08 stdio: fix fseek,ftell semantics
    	 uwin stdio: fflush() => _doflsh() to avoid __cplusplus clash
    	 getopt: call liberror() to avoid error() conflict
    	 tmfmt,tmscan: %N zone type (nation code), %z zone minutes west offset
    	 tmfmt: - no pad _ space pad 0 leading 0 pad
    99-05-28 magic: fix 'x' == '*' for any number, magic.tab tweaks
    	 features/lib: verify that stat64 really works
    99-05-21 tm*: add TM_WINDOW==69 for consistent century windowing guard year
    99-05-18 tmtime: add century leap year calc anticipating unsigned time_t
    99-05-17 sfkeyprintf: handle %o and %x!!
    99-05-09 pathprobe: $HOME/.probe if not suid and st_uid!=geteuid()
    99-04-28 magic,magic.tab: add registry()
    99-04-24 regcomp: fix ksh pattern +! parse
    	 regfatalpat: add
    	 optget: make : ? ] double escape consistent in all contexts
    99-04-01 features: drop iffeio.h and stdio.h when only printf() used
    	 regex: fix stats() .l and .k count
    	 fmtquote: added; most general fmtesc() form
    99-03-22 fmtesc.c,ast.h: add fmtnesq()
    	 optget: --?x works for -x option flag
    99-03-17 features/limits.c: workaround solaris __EXTENSIONS__ _timespec bug
    	 workaround limits.h circular prereq with ignore stdio.h
    	 sfvprintf: %04e left-pad zero fixed
    99-03-03 fts: uncle already: add FTS_SEEDOTDIR to retain leading ./
    	 regex: REG_MULTIPLE, BM for fixed string alternation
    	 optget: embedded `-' optional in long options, prefix={0,1,2}
    99-02-14 fastfind: fix dir format bug that emitted wrong paths
    	 astconf: fix redef off by one bug
    99-02-11 pathcanon(): don't cache astconf("PATH_LEADING_SLASHES", NiL, NiL)
    99-01-23 optget: move <old_opt.h> back into <option.h>, no open-close
    	 optget: add "[index:long-name:description]" for --long-name
    	 comp/gross: add weak __libc_attr for irix < 6.5 compatibility
    	 features/limits.c: tweak the guards again
    99-01-11 fastfind: handle old format count byte order
    	 magic.tab: fix elf to use real phdr offset
    	 magic.c,magic.tab: fix | to act like switch/case
    	 comp/fross.c,features/hack: for gross hacks
    	 features/stdio: avoid sfio namespace pollution
    98-12-25 tmdate: yyyy.mm.dd
    	 pathprobe: fix procrun() cmd path bug
    	 fmtesq: add
    	 features/common: win32.alpha va_list
    	 magic: add pc alpha object
    98-11-11 strmatch: add STR_ICASE
    	 pathprobe: punt to $HOME/.probe/<key+HOSTTYPE> if not S_ISUID
    	 tmzone,tmdate: handle +-minutes, nn/MMM/yyyy
    	 stropt: fix nested quote pop
    	 tmfmt: add %K => %Y-%m-%d/%H:%M:%S
    	 sfio/stdio: fix fseek() SF_PUBLIC omissions
    	 fmtesc: catch '\' (duh)
    	 vmalloc: vmbest round bug fix
    98-11-01 fts.c: no pathcanon() if (fts_flags & FTS_PHYSICAL)
    98-10-01 features/stdio prototype fixes
    	 optget: strton() instead of strtol() for #
    98-09-22 regcomp: add REG_DELIMITED and REG_ESCAPE delimited re support
    98-09-15 fix _LARGEFILE64_SOURCE stuff
    	 ast_std.h: provide mmap() prototype
    98-08-11 fix sfpopen() to ignore SIGPIPE by ignoresig() for sfio but not stdio
    	 fix procopen() to ignore SIGPIPE by ignoresig() for PROC_IGNORE
    	 sfio sfpopen/popen update
    	 magic.src: fix ustar entry
    98-07-17 fix ftwalk() short by one malloc()
    	 add fts_notify()
    98-06-25 sfdcmore,sfdcprefix: add
    98-06-19 tokscan: add %f %g
    98-06-01 disc/sf*.c: memset(0) after disc malloc()
    98-05-11 strelapsed: y==Y
    	 fts: pathcanon() top list
    98-04-01 error: error_info.time for all msgs, just after cmd id
    	 error: no sfsync(sfstdin)
    	 sfio: sfpool, Sffmt_t update
    	 magic.tab: sgi core dumps -- why aren't these elf?
    	 stropt: (v+n) for unknown option is option value if n!=0
    	 procopen: fix setsid() for spawnveg() only
    98-03-19 malloc: add realloc foreign region check
    	 sfdisc.h: rename to match kpv disciplines
    	 fastfind: fix strcasecmp/strcmp directory prefix mixup
    98-03-17 features/fcntl.c,pathtmp,sftmp: add O_TEMPORARY
    98-03-01 pathcanon: fix PATH_LEADING_SLASHES to stat() both slashes
    	 pathcanon: add PATH_VERIFIED
    	 tmdate: add skip[] to expand separator char set
    	 fastfind: FIND_OLD for old 7 bit db, FIND_TYPE for new 8 bit typed db
    	 fastfind: default generates gnu LOCATE02 8 bit db
    	 magic: handle %s in mime description
    	 cdt: kpv update
    	 sfio: kpv update
    	 stdio: fpos64_t fseek64(), ftell64(), fgetpos64(), fsetpos64()
    	 stdio: fseek() => sfseek(SF_PUBLIC) to avoid locking
    	 fts: initialize parent stat[bp] from top level *after* statf done
    	 astmath: add -lm requirement test
    	 *: Astlong_t => _ast_*_t
    	 regex: simplify regcollate() (from doug)
    	 tmtime: preserve Tm_t*tm when calling tminit()
    	 astconf: add readonly PATH_ATTRIBUTES=[cirw]
    98-02-14 fastfind: add FIND_ICASE to ignore case
    	 tmdate,tmgoff: handle (+|-)hh[[:]mm[[:]ss]] absolute timezone
    	 tmdate: `<n> <part>' now assumes `next <n> <part>' instead of `this'
    	 tmfix: fix leap year bug that forgot to add 1900
    	 proc: add PROC_ZOMBIE
    98-02-06 strmatch() char class range bug fix
    	 regex char class range bug fix
    98-01-23 _WIN32: changed the #if logic again to accomodate _GNUC_
    	 mnt: grab the mount options too
    	 ast_std.h: hide getopt,getsubopt from stdlib.h
    	 features/limits.c: add gnu guard macros to avoid limits.h recursion
    	 features/mode.c: include "limits.h" instead of "FEATURE/limits.lcl"
    98-01-11 sfio.h: use Astlong_t, move Sfio_t Sfdisc_t typedef to top for stdio.h
    	 sfhdr.h: #undef SETLOCAL for hpux
    	 sfvprintf,sfvscanf: %I*x for sizeof(int_arg)
    	 handle ftruncate64 and truncate64
    	 dtopen.c: __hppa dll needs Dtset Dtlist Dttree refs here
    97-12-18 fmtnum: add
    97-12-11 magic: handle sgi 64 bit core dumps
    97-12-07 pathtmp: add override for TMPPATH,TMPDIR and cycling
    97-11-11 tm: handle 0 return from gmtime(),localtime() (dos negative time_t)
    	 features/stdio: fix fflush() macro to do physical sync
    97-10-31 astconf PATH_RESOLVE is logical if 3d&&!std, metaphysical otherwise
    	 magic: fix #! mime bug
    	 tm: tmtime() now calls tmfix() and adjusts tm_isdst too=>mtime() works
    97-10-11 dllfind,dlfcn: move to separate -ldll so -last can link static, duh
    	 Makefile,state.c: move forced header generation state.c => Makefile
    	 sfio: update including SF_WHOLE
    97-10-01 sfdostext: add \r=> sfio discipline
    	 stropt: NiL table => p=name for all name=value
    97-08-11 pathtmp: check pid to note forks
    	 procopen: FD_CLOEXEC rfd && wfd
    	 fts: fts_close() after fts_children() with no fts_read() now works
    97-07-17 error: sfsync(sfstdin,sfstdout,sfstderr) instead of sfsync(NiL)
    	 _sfcvinit: add sfio internal interface to base conversion tables
    	 strton: use _Sfcv* base conversion tables instead of sfsscanf()
    	 sfvscanf: use _Sfcv* base conversion tables
    	 mime: x- permutations now matched if exact fails
    	 mime: original- stripped from content-* headers
    	 tmdate: add yyyy-jjj, yyyy-mm-dd
    	 dllfind: add
    	 ccmapid: fix buf copy loop limit
    	 ccmapname,ccmapcpy: add
    	 sfstrtmp: add
    97-05-09 streval: fix up casts for pseudo-ansi cc
    	 features/types: use _ast_int_8 vars to verify support
    	 string/modedata: check for mvs.390 S_IFMT
    	 include/ast(_std).h: add #define __FILE_typedef
    	 magic: add ccode text check
    	 include/ftwalk.h: FTW_PATH=>FTS_NOCHDIR to avoid FTS_AGAIN (duh)
    	 fts: clear status for FTS_AGAIN (fixes rm -r bug)
    	 mnt: add mvs openedition w_getmntent()
    	 sfhdr: _hdr_float && <float.h> for correct MAXDOUBLE
    	 vmalloc/vmbest: if _std_malloc then use malloc()/free() not sbrk()
    	 remove: check _std_remove
    	 procopen: handle pio[{0,1}]=={0,1}
    	 setenviron,features/uinstd: test for mvs.390 dll environ hacks
    96-12-25 <sfio_p.h> -> <ast_common.h>
    	 __EXTERN__(type,object)
    	 __DEFINE__(type,object,value)
    	 magic: check strings in !CC_NATIVE code set too
    	 system: cmd==0 means check for shell access (xopen)
    	 sfhdr.h: fix sfrsrv prototype
    	 add __libc_malloc etc for gnu/linux
    	 astconf(NiL,path,name) == astconf(name,path,NiL) + no liberror
    	 fts_open: if toplist() stat fails return 0
    	 ftwalk: handle fts_open()==0 via one phony userf() call
    	 sfmode: S_ISFIFO default is SF_SHARE=0
    	 features/lib: _WIN32 _lib_vfork=1 by default
    	 unsigned<0 comparison and other fixes via sgi.mips4 cc
    	 stk.c: use <align.h> ALIGN_BOUND for stkalloc()
    	 features/lib,vfork: uwin fix
    	 ast_std.h: fix strto[u]ll prototypes with features/types _ast_int_8
    	 getsubopt: add for xopen 4.2 compatibility
    	 drop function __IMPORT__
    	 magic: more magic
    	 change #define FILE from Sfio_t to struct _sfio_s
    	 state.c: add generated includes that may be hit by std for MAM
    	 bytesex: forgot about sizeof(long)=>7; could we fix the name too?
    	 vmalloc.h: fix vmnewof() definition
    	 sfio.h,stdio.h,ast_common.h: pollution cleanup
    	 magic.c: add | op for switch
    	 Makefile: stdio.h was on both HEADERSRC and HEADERGEN -- don't do that
    	 drop pp:notice to get <sfio.h> ... <ast.h> to work
    	 regex: add [[:<:]]==\< and [[:>:]]==\> for bsd compat
    	 mime.c: ignore X-* headers while scanning for Content-*
    	 magic.c: check for negative indirect offsets
    	 magic.tab: fix dos entry that generated negative indirect offsets
    	 vmalloc.h: add vmstrdup() prototype
    	 hash.h: add hashgetbucket() macro
    	 magic.c: MAGIFILE is now a : file list
    	 mnt.c: another 4.4 bsd fix -- users must include <sys/crap.h>
    	 common: fix _WIN32 chicken&egg with va_copy
    	 sfio: forgot to set f->val along with _Sfi in sfexcept()
    	 Makefile: add mini target for uwin libmini.a
    	 sfcvt.c: workaround for flaky long double optimizers
    	 features/common: fix to work with va_list==void*
    	 regexec.c: fix REG_STARTEND subexpression offsets
    	 strmatch.c: don't forget <wctype.h>
    	 regrexec.c: fix REG_INVERT end boundary bug that missed last record
    	 astconf.c: notify(0,0,"a=b") called for each setenviron("a=b")
    	 pathcanon.c: check astconf(PATH_LEADING_SLASHES) to preserve //*
    96-11-28 _LARGEFILE64_SOURCE by default if possible: NOTE: assumes xopen
    	 regerror: fix for xopen
    	 getopt: fix for xopen
    	 magic: add ciao virtual database
    	 astconf: posix/strict/xopen implies "standard" conformance
    	 fs3d.h: hide mount prototype
    	 ast_std.h,mnt.c,features/fs: ncr port tweaks
    96-10-31 version 5.0
    	 add strtoll() strtoull()
    	 sfkeyprintf: upgrade to int_max args
    	 ast.h: add ssizeof() to work around unsigned botch
    	 conf.sh: add shell actions to conf.tab
    	 _DLL*: drop for _BLD_<lib> + __EXPORT__ + __IMPORT__
    	 sfio,cdt,vmalloc: kpv update
    96-10-11 <ccode.h>: add character code map support
    	 procclose: return shell style exit status
    	 features/fs: pun statvfs.f_basetype to statvfs.f_reserved7 for mvs
    	 uwin: add subdir for uwin additions
    	 ast_std.h: swab() is from <stdlib.h>
    	 sfio.h: <ast_std.h> if _PACKAGE_ast
    	 magic.tab: add mips[1-4], 64-bit
    	 port tweaks for sol.sun4 and sun4
    96-09-06 strerror: add
    	 fmterror: uses strerror
    	 str*search: use sfiso646() order
    	 strpsearch: add
    	 magic: add Magic_t.mime mime type return for magictype()
    	 mime.h: add
    	 strton: use sfsscanf()
    	 strperm: factor in umask() if no who
    	 pathtmp: add TMPPATH check
    	 libevent: add
    	 magic: add discipline to magicopen()
    	 mime: add discipline to mimeopen()
    96-08-31 regex: fix BM fail table generator
    96-08-11 mntread: fix mnt.type for SCO variant
    	 conf.tab: add SCO KERNEL_* sysconf() vars
    	 fastfind: add findwrite(), fix findread() FF_OFF omission
    	 ftwalk: reimplement on top of fts
    	 fnmatch,re_comp,regexp: reimplement on top of regex
    	 basename,dirname,fmtmsg,fts,ftw,getdate,getsubopt,glob: add
    	 hsearch,nftw,realpath,strftime,strptime,swab,tempnam: add
    	 tsearch,wordexp: add
    	 getcwd: cache last path for easy test
    96-07-17 error: sfsync(NiL) ... write ... sfsync(sfstderr)
    	 astconf: handle readonly *(DEV|DIR) vars
    96-04-01 swapop: fix stupid return value bug
    	 features/int.c: fix int_swap generation bug
    	 regnexec,regrexec: fix unsigned underflow init error
    	 ls.h: fix iblocks() to be in units of LS_BLOCKSIZE
    96-02-29 magic: space before function is definition with no call
    	 hash: drop hash_info from public interface
    	 hash: OBSOLETE hashlast()
    	 hash: add Hash_root_t.Hash_last_t to public interface
    	 add strsearch() and strnsearch() to complement strlook()
    	 add hashkey.h for keyword->long hash
    	 pathpath: pathpath(0,0,"",0) disables $0 $_ $PWD relative search
    	 sfio: sfstrtod+sfhdr update
    	 regex: fix REG_LENIENT to map BRE \[+?|] to ERE [+?|]
    	 change _std_malloc iffe test so it doesn't hang on alpha
    	 sfhdr.h: features/sfio generates _lib_cvt instead of _i386_cvt
    	 ast_hdr.h: add va_copy(a,b) to copy va_list b to a
    	 getopt: fix stupid getopt() -> optget() bug
    	 sfvprintf: %h? now downcasts
    	 regex: handle strto?l() errno in regcomp()
    	 sfstrtod: _Sfstrtod_already_defined -> _STUB_sfstrtod
    	 ast_std.h: hide valloc() and ignore <strings.h>
    	 sfkeyprintf: pass phony va_list for '2'
    	 regex: change HIT var type from int to size_t in special()
    	 ast.h: add EXIT_STATUS(x) to convert wait() status to sh exit status
    96-02-14 regex: add _ to \<...\> isalnum test
    	 regex: fix BM inner loop breakout
    	 features/types: size_t is signed on some systems! => _ast_size_t
    	 sfio: sfrd discipline peek optimization
    	 vmalloc: vmalloc.h malloc family macro upgrade
    	 tokopen: fix newline bug for non-restore open
    	 sfio: no inline for gcc until it emits for -g too
    96-02-12 sfio: internal upgrade
    96-02-09 regex: Boyer-Moore boundary fix
    	 vmalloc: snarf latest
    96-02-06 regex: add regrecord() and regrexec() for Boyer-Moore record filtering
    	 regex: rearrange regnexec() args to match buffer,count arg style
    96-01-31 stk: add STK_NULL to stk.h and stk.c
    	 regex: privatize regex.h and fix min re length computation
    	 workaround lazy strdup() implementations in features/lib _std_malloc
    	 fix stkclose() to free(stream) -- purify missed because of sfio links
    	 unused var cleanup
    	 port/mnt.c must include <ls.h> to get <ast_fs.h>
    	 add SF_FINAL to sfio and stk
    	 sfio reads now on natural block boundaries
    	 add #!!! <level> <message> !!! to tokline()
    	 add REX_BM pre-filter to regcomp/regnexec
    96-01-22 add regcomp env.paren overflow checks
    96-01-11 add Doug McIlroy's regex (converted to C from C++ by gsf)
    	 AT&T Research now
    	 sfgetr optimization
    	 regex buglets
    96-01-05 tweak magic.tab for win32
    95-12-25 add !(...) -> (...)! to fmtre()
    	 nt tweaks -- functions with no header proto must be defined extern
    95-11-24 version 4.1
    	 add mnt.h mntopen mntread mntclose
    	 convert fmtfs to mnt.h
    	 add RE_LEFTANCHOR and RE_RIGHTANCHOR
    	 gcc inlines must also have global library function instantiation!
    	 add hashview()
    	 fix strtape() internal buffer flow
    	 fix mntread() fs/dir transposition for uts mnttab
    95-10-31 change features/unistd.c includes to break limits-param cycle
    	 add cdt from kpv
    	 sfio snarf from kpv
    	 add [ht]search for _WIN32
    95-10-11 clarify PARANOID pathcheck() warning
    	 fix procopen() LIB_SPAWN environ bug with setenviron() cache
    	 fix setenviron() bug that forgot to reset environ if == 0
    	 add %Z ' ' output format to sfkeyprintf()
    	 sfio snarf for sfvprintf fix
    	 allow multiple hashscan() with scope caveat
    	 add comp/fakelink.h to synthesize a few symlink text patterns
    	 add !<xxx> magic to misc/magic.tab
    	 add FTW_TOP to inhibit recursion (for ftw side effects on top level)
    	 add memfatal() common malloc fatal exception message
    	 add dos \rtest to misc/magic.c/cklang()
    	 sftmp() O_EXCL+random to avoid collisions
    	 pathtemp() uses sftmp() randomizing
    	 features/fs uses SF_APPENDWR
    	 sftmp() uses pathtemp() -- don't worry, its not circular
    	 a few more _WIN32 compatibility additions
    	 realloc fixed to use VM_RSCOPY|VM_RSMOVE instead of obsolete 1
    	 add hashlook(tab, oldname, HASH_RENAME, newname)
    	 a few more tweaks to satisfy port warnings
    	 add _SFIO_INLINE_PRIVATE to provide real function too
    	 fix <dirent.h> installation test
    	 oops object / shared library compat with _sfgetl2 _sfgetu2
    95-09-11 add getopt() compatibility
    	 add fstat,lstat,mknod,stat fixes for _x versions in sys/stat.h
    	 add getconf CONFORMANCE - posix for things that aren't ast default
    	 sfio_t.h: #ifndef _SFIO_H #include "sfio.h" #endif
    	 snarf vmalloc from kpv
    95-08-11 fix malloc bug in magic
    	 update linux and bsd 386 magic entries
    	 error_info.auxilliary returns new level, |=ERROR_OUTPUT if msg done
    	 drop fnmatch from strmatch for sparc (solaris) until it collates
    95-07-17 fix port/astconf universe initialization
    	 fix misc/optget opt_info.nopt initialization
    	 drop tmset() TZ=... because it only worked when TZ=... was ignored
    95-05-09 mongo <ast.h> namespace cleanup
    	 drop > 2 year old obsolete interfaces
    	 sfvprintf.c fix for (char:8 short:16 int:32 long:64) architectures
    	 TMP_MAX back into conf.tab
    	 pathbin() and pathshell() now use astconf()
    	 fix pathtemp() to not cache getenv("TMPDIR")
    	 fix ftwalk() metaphysical to handle non-dirs too
    	 initialize *_info = { 0 }; for ancient ld semantics (NeXT)
    	 fix magic() to do vmfree()
    	 astconf(X_OK) must prefix lines with "getconf"
    	 use <wchar.h> and wctype in strmatch() if available
    	 _lib_utime_now checks utime(path,0)
    	 _lib_poll_notimer checks poll(x,0,timeout)
    	 add another _lib_utime_now check to port/touch.c
    	 fix dd_buf cast in dir/opendir.c
    	 split getconf.h into conftab.h and conftab.c for :READONLY:
    	 use mbtowc() only if MB_LEN_MAX>1
    	 sfio char* -> Void_t* cleanup
    	 handle old syntax in misc/magic.c
    	 sigdata.c holds readonly signal strings
    	 pathcheck() does AT&T checks for tools matching PARANOID - yuk
    	 unused var cleanup
    	 deprecate hash_info in favor of hashlast()
    	 fix bad conf.sh ksh integer interactions
    	 dll cleanup
    	 magic.c falls back to malloc for now
    	 add environ to <ast.h> -- C library global data syms are *RESERVED*
    	 sfhdr.h memccpy(1,2,3,size_t) prototype
    95-04-01 version 4.0
    	 convert to vmalloc
    	 allow sigcritical() nesting mismatch to work around vfork() bug
    	 add strexpr() primitive for streval() with user handle (like ftwalk)
    	 add <magic.h> and magic.c file command magic interface
    	 update magic mail message entry
    	 fix keyprintf() invisible char count nesting bug
    	 add sfstrnew(SF_READ|SF_WRITE) for alternate sfstropen() modes
    	 sfstrnew(SF_READ) but reading requires sfseek(), sfreserve()
    	 add conf.tab and conf.sh to nail C/POSIX limits/unistd macros
    	 add getconf() string interface to *conf*
    	 _DLL_INTERMEDIATE_DATA for systems that require indirect globals
    	 _DLL for building shared libraries with _DLL_INTERMEDIATE_DATA
    	 vecfile() restricted to S_ISREG()
    	 add spawnveg() for job control
    	 convert procopen() PROC_PGRP(id) to spawnveg()
    	 fmterror() returns error text given errno (strerror() does same)
    	 fmtsignal() returns signal text given errno (strsignal() does same)
    	 {sig_name,sig_text,SIG_MAX} -> sig_info.{name,text,sigmax}
    	 liberror("",...) omits [%s library] prefix
    	 update features/signal.c table
    	 add vmdisc() and change vmnewof() to use vmresize()
    	 fix conf.sh to allow refs to previously defined limits
    	 fix undefined entries in getconf()
    	 magic data in magic.tab
    	 fix stropt() pointer cast
    	 vmalloc() exception handler replaces nomalloc()
    	 merge sigdata.c into fmtsignal.c -- sun link needs function w/ data!
    	 sftmp() bug fix
    	 drop local <unistd.h> even with _POSIX_SOURCE
    	 fix vmstrdup() macro arg miscount
    	 fix conf.sh to handle enum'd symbolic constants in unistd.h
    	 drop malloc() et.al. prototypes from vmalloc.h
    	 fix sfvprintf() %d argument reference
    	 add OSF/1 AES symbol(s) to conf.tab
    	 determine standards prefix from conf.tab
    	 add _CS_SHELL to conf.tab
    	 getpath() default is confstr(_CS_PATH)
    	 getshell() default is confstr(_CS_SHELL)
    	 unify keyprintf user function args (should have learned by now!)
    	 add quad type to magic
    	 add astfeature() to unify universe style dynamic features
    	 add ftwflags() to determine FTW_* flags from astfeature()
    95-03-11 fix stropt() to not modify its *const* arg
    	 handle "' quotes and chresc() in stropt() values
    	 , treated like :space: between stropt() options
    	 fix procopen() fd dup to ignore self-dups
    	 add library id[] to misc/state.c
    	 add ftwalk(FTW_METAPHYSICAL) for posix -H
    	 sfvprintf() now handles balanced () in %()
    	 add tmfmt() with buffer size check to replace tmform()
    	 add fmttime() calling tmfmt() to fit fmt*() mold
    	 add <keyprintf.h> and keyprintf() to support %(...)? in commands
    	 add Hash_table_t for size==0 in stropt()
    	 add EXTTYPE extended header to tar.h
    95-02-14 sfmove() buffer size overflow fix
    	 add _SFSTDIO_H to sfio.h
    	 rename setenv() to setenviron() -- posix finally decided
    	 rename <option.h> opt_* to opt_info.*
    	 update features/unistd.c for _SC_* and _PC_* posix additions
    95-01-19 (char*)uchar cast in fmtesc()
    	 fix hash bucket memory leak in hashlook() [via John Mocenigo]
    	 update strings/strtape()
    	 fix optget()/optjoin() to handle leading +
    	 add ALIGN_ prefix to <align.h> identifiers
    95-01-11 change tm/*.c tmset(0) to tmset(tm_info.zone) to keep user setting
    	 fix tmform() %Z null pointer dereference
    95-01-01 add this RELEASE file
    	 fix strperm() to properly handle "644 file"
    	 fix tokline() to return last ' ' terminated line in string
    	 fix tokscan() to properly handle \\n splice
    	 add fmtesc() to complement stresc()
    	 add LS_NUMBER to fmtls()
    	 drop spurious optusage() ' '
### libcmd changes
    12-06-25 getconf.c: don't defer to native getconf if we are it -- doh
    12-06-19 tail.c: be nice and use sh_sigcheck() and tvsleep() to verify interrupts
    12-05-31 cat,head,tee: use errno==EPIPE => ERROR_PIPE(errno)
    12-05-25 vmstate.c: #include <sfdisc.h> for sfkeyprintf() prototype
    12-04-20 chgrp.c,chmod.c,cksum.c,cp.c: default fts_flags()|FTS_META (to disable pure FTS_PHYSICAL)
    12-03-26 cp.c: fix --interactive astquery() logic that ignored no&quit!
    12-02-14 rm.c: --force ignores no file operands specified
    12-01-10 b_* (int, char**, void*) => (int, char**, Shbltin_t*)
    11-08-27 pids.c: add getsid() iffe test
    10-08-16 chmod.c: add -l alias for { -h --symlink }
    11-08-16 chgrp.c: change lchmod() ref to lchown()
    11-05-03 cp.c: do not delete src if mv to dest fails -- doh
    11-03-28 chmod.c,chgrp.c: fix --symlink logic
    11-03-26 rm.c: don't eaccess() check symlinks!
    11-01-27 date: add { -R, --rfc-2822, -T, --rfc-3339=type }
    11-01-03 chgrp.c: --symlink => --physical
    10-12-10 rm.c: fix not-writable logic
    10-12-01 tee.c: add iterrupt logic for slow open(1) -- needs to be generalized
    10-11-30 chgrp.c: add -N,--numeric to bypass name lookup
    10-10-20 cp: add --timestamps (preserv timestamps and permissions)
    10-10-20 ln: fix 'cannot replace existing file' logic
    10-10-10 cp,mv: add --remove-destination
    10-08-11 cp.c,expr.c: use conformance("standard",0) test
    10-08-11 cut.c: use mbnsize() instead of mblen() (for ast C.UTF-8)
    10-07-28 chgrp.c,chmod.c,cksum.c: fts_path for diagnostics, not fts_accpath!
    10-06-14 rm.c: fix -rfu logic
    10-06-12 paste.c: repeat after me: do not modify argv[i]
    10-06-01 sync with ast api 20100601
    10-05-09 tail.c: fix -0f bug that inially listed the entire file
    10-05-06 basename.c: add { -a,--all -s,--suffux=suffix } from BSD
    10-04-12 cat.c: fix -v bug that dumped core and make consistent with cmp --print-chars
    10-04-11 cmp.c: add --print-bytes, --count=n, --differences=n
    10-04-08 vmstate.c: add { method flags } vars for Vmstat_t.mode
    10-04-08 mkdir.c: fix check for { S_ISUID S_ISGID S_ISVTX } after successful mkdir(2)
    10-04-01 stty.c: add --fd=fd option
    10-03-23 tail.c: fix -f large initial offset bug that didn't copy all data
    10-03-07 tail.c: sfsync(sfstdout) after all -f done, fix -f partial line
    10-03-05 mktemp.c: add --regress=seed for testing
    10-03-05 vmstate.c: add
    10-01-26 tail.c: -f sleep(1) only if no progress from last round of checks
    10-01-20 fts_fix.[ch]: use <fts_fix.h> instead of <fts.h> (see fts_fix.c)
    10-01-20 cp.c: free(state) if called from old shell
    09-12-10 join.c: <wctype.h> for iswspace()!
    09-12-04 cmd.h: fix CMD_DYNAMIC logic
    09-12-04 cut.c: handle -d mb
    09-12-03 mkdir.c: add --verbose
    09-11-30 cat.c,date.c,cksum.c: drop setlocale() call already done by optget()
    09-11-30 join.c: handle -t mb
    09-11-28 wclib.c: { -w -L } mb independent of -m
    09-11-28 paste.c: handle -d mb
    09-11-28 uniq.c: handle -s mb
    09-11-28 cksum.c: FTS_SEEDOTDIR by default
    09-09-09 fds.c: add --unit=fd
    09-08-25 tail.c: initialize Tail_t.fifo=0 !!
    09-08-15 tail.c: fix fifo logic
    09-08-11 wc.c: add setlocale(LC_CTYPE,"C") cleanup, add utf8 optimzations
    09-08-10 uniq.c: replace -c 1..9999 sfsprintf() with inline conversion
    09-08-01 join.c: fix empty field null pointer deref
    09-07-23 pathchk.c: add -P,--path and -a,--all
    09-07-02 chgrp.c,chmod.c,cksum.c: fts_flags() default only if not --recursive
    09-06-19 cmd.h,cmdinit.c: add ERROR_CALLBACK for ERROR_NOTIFY main() callback
    09-06-19 mktemp.c: --unsafe now checks and prints path but does create
    09-06-19 tee.c: add ERROR_CALLBACK for tee_cleanup() sfio discipline pop
    09-06-18 rm.c: handle interrupts during interactive query
    09-06-18 cp.c: handle interrupts during interactive query
    09-05-25 tail.c: fix old style option logic to handle --invalid-long-option
    09-05-24 tail.c: -r == +1r
    09-05-01 mktemp.c: handle foo/prefix, add -p dir and -u
    09-03-31 cat.c: handle --no* options
    09-03-15 tail.c: fix --timeout termination logic
    09-03-03 tee.c: clean up sfio disciplines on error
    09-03-03 cat.c: fix -v|-e|-n|-B interaction bugs
    09-02-14 tail.c: fix VSC failures
    09-02-14 join.c: fix VSC failure
    09-02-02 uniq.c: document -number == -fnumber, +number == -snumber
    09-02-02 tail.c: fix usage[] for negative offsets, add sun -b
    09-02-02 mktemp.c: add
    09-02-02 features/utsname: UWIN _UNAME_os_DEFAULT => UWIN
    09-01-31 dirname.c: add experimental { -f -r -x } for pathpath(3)
    09-01-05 cmp.c: fix EOF diagnostic to conform to posix
    09-01-03 mkfifo.c: fix --mode=mode logic
    08-12-07 date.c: add %[_][EO]K for [space pad] [full|long] iso docs
    08-11-10 stty.c: check for -t grouping so -tostop != -t -ostop
    08-10-15 rm.c: handle 'rm -f x x' => exit 0
    08-09-08 stty.c: #ifdef guard TAB[012] -- freebsd: damn the posix, full speed ahead
    08-06-17 shcmd.h: move to libast
    08-04-24 uniq.c: add optget() 'n' option for -1 => -f1
    08-04-24 getconf.c: clarify diffs between "name - value" and "name = value"
    08-04-01 cut.c: add write error check
    08-04-01 paste.c: fix --noserial stream vector access bug
    08-04-01 pids.c: add ls/ps style --format=format
    08-04-01 stty.c: fix off2 unitialized reference
    08-03-28 chgrp.c: add --before=file
    08-03-14 pids.c: add
    08-03-11 chgrp.c: fix -m to use uid:gid as lookup key
    08-02-11 Makefile: add -lmd possibly required by sumlib.o -- hack alert
    08-01-30 expr.c: fix <=0 type that broke substr * 1 * -- wow
    07-12-13 cp.c: fix builtin state reinitialization
    07-11-29 rev.c: honor multibyte locales
    07-11-27 cp.c: open non-existent destination with O_EXCL
    07-11-27 stty.c: add -t,--terminal-group to list tty pgrp
    07-11-27 cksum.c: --silent -s => -S, -s == -x sys5 for gnu compatibility
    07-11-11 tee.c: drop ancient bsd compatibility "-" operand => SIGINT
    07-10-29 cksum.c: add SUM_LEGACY for -r
    07-10-12 cp.c: plug usage string memory leak by using per-builtin state
    07-09-21 cksum.c: add sumprint() default scale arg, --scale, --bsd for solaris
    07-09-10 chmod.c: add --show,-n
    07-07-27 wclib.c: bias <wchar.h> checks for modern unix
    07-07-17 cat.c: fix --squeeze-blank to reduce multiple blank lines to *one*
    07-05-20 cmd.h: handle msvc's balk at if(0)0=0;
    07-05-20 cksum.c: #include <modex.h>
    07-05-11 cmd.h: add _CMD_CONTEXT_OK() to verify >= 20070511 context
    07-05-09 fds.c: handle ipv6 sockets
    07-05-09 cmd.h: <shbltin.h> : cmdquit() => sh_checksig(context)
    07-04-25 mkdir.c: force (S_ISVTX|S_ISUID|S_ISGID) after mkdir(2)
    07-04-24 procrun.c: add -last intercept => sh_run() and whence -q
    07-04-19 uname.c: name operands first checked for CS_NAME, then NAME
    07-03-28 date.c: add --unelapsed=scale, -U: fmtelapsed() => strelapsed()
    07-03-25 wclib.h: iswspace() requires <wctype.h>!
    07-03-11 tty.c: add sysV --line-number, -l
    07-02-26 Makefile: sumlib.o: direct extract from +lsum (vcodex someday)
    07-02-24 Makefile: tweak cmdext.h action for --mam bootstrap
    07-02-09 Makefile: { cmdext.h cmdlist.h } depend on *.c list!
    07-02-09 Makefile: +lsum to bring in static -lsum (no dynamic right now)
    07-02-07 cksum.c: move from src/cmd/std with ftwalk => fts
    07-02-07 getconf.c: handle /bin == /usr/bin in defer logic
    07-01-26 chmod.c: don't FTS_FOLLOW if !FTS_PHYSICAL
    07-01-23 cut.c: Cut_t variable dimension list[] must be last member
    07-01-22 uname.c: fix -h typo that clobbered astconf() state -- ouch
    07-01-02 fmt.c: fix buffer splice off by one bug -- what else
    06-11-23 cmd.h: because of proto cmdinit cannot be a function like macro
    06-11-21 cp.c: fix 06-10-31 const dot[] readonly assignment
    06-11-15 cp.c: fix 06-10-31 ln -s enoent bug
    06-11-11 getconf.c: let astconf() handle "undefined" vs. ""
    06-11-11 getconf.c: fix deferred getconf path search
    06-11-11 fmt.c: handle two char { \t } in --usage ouput
    06-10-31 global edit to eliminate most non-const static data0
    06-10-31 use <cmd.h> for all b_*() implementations; drop <cmdlib.h>
    06-10-31 cmd.h: add CMD_ prefix to { BUILTIN DYNAMIC STANDALONE }
    06-10-31 join.c: tone down /tmp usage vi SFSK_DISCARD
    06-10-31 cp.c,rm.c: update to <fts.h> to accomodate non-static data
    06-10-29 date.c: "...%H%..." => "...%H" "%..." to avoid SCCS conflict
    06-10-26 fds.c: handle sctp
    06-10-18 tail.c: fix invalid suffix infinite loop
    06-10-11 chgrp.c,cp.c: add sfstruse() error checks
    06-10-10 tee.c: add --linebuffer, -l
    06-10-06 getconf.c: preserve native getconf(1) known variable behavior
    06-10-04 sync.c: add (thanks to Roland Mainz)
    06-10-04 getconf.c: add -v specification => run native getconf(1)
    06-09-28 stty.c: static setmode() => set() for darwin.i386
    06-09-27 head.c: handle -1c => -c1
    06-09-19 pathchk.c: pathconf() => astconf()
    06-09-11 tail.c: handle compatibility corner cases
    06-09-08 date.c: add output write error diagnostic
    06-09-04 tail.c: fix initial position for -n0, no args => no -f
    06-08-28 uniq.c: add -D,--all-repeated
    06-08-25 wc.c,wclib.c: add -L,--longest-line,WC_LONGEST
    06-08-24 wc.c,wclib.c: implement -m and WC_MBYTE
    06-08-24 rmdir.c: -sp applies to every message, add gnu -e
    06-08-23 rmdir.c: add solaris --suppress, -s
    06-08-23 mkdir.c: don't add 0300 to -p final dir mode
    06-07-17 cut.c: handle last line with no newline
    06-07-17 cut.c: --output-delimiter == --line-delimiter
    06-06-25 chmod.c: mask -c output with S_IPERM
    06-05-09 uname.c: add -o; change -a to match linux
    06-05-03 date.c: add --last -L to list last of multiple time args
    06-02-14 tail.c: fix -f bug that lost fast stream data
    06-02-11 getconf.c: exit 1 if name invalid -- duh
    06-01-28 cp.c,rm.c: fix astquery() 'q' to return and not exit()
    05-08-11 fmt.c: fix -o to handle raw --usage strings
    05-05-17 cat.c,head.c: disable EPIPE error messages
    05-04-14 chgrp.c: -f means all non-syntax error messages
    05-04-11 fds.c: add from old internal open(1)
    05-04-09 cmdext.h,cmdlist.h: generate from source -- about time
    05-03-24 features/symlink: verify { lchmod lchown } implementations
    05-03-07 date.c: add --listzones to list the time zone table
    05-02-14 chmod.c: add --reference=file
    05-01-11 cat.c: restore output stream to binary mode on exit
    04-12-15 cp.c: add --preserve high resolution time support
    04-12-08 date.c: add high resolution time support
    04-12-01 cmp.c: fix %6I*ld => %6I*d -- doh
    	 fmt.c: handle "n operands n"
    	 head.c: handle -cN -nN, N > 4Gb
    04-11-22 cmp.c: handle >2G chars/lines
    04-11-18 fold.c: add --prepend=text, --append=text
    04-10-31 tail.c: use SF_LOCKR macro
    04-10-28 tail.c: use strtol() for old stype [+-]number[suffix] -- doh
    04-10-22 cp.c: check rename() errno==ENOENT to retain destination
    04-10-11 fmt.c: fix -o,--optget sublist bugs
    	 tail.c: use strton() for number conversion
    04-10-08 pathchk.c: add empty path and -p - first component char
    04-10-01 fmt.c: add -o,--optget concatenated usage string format
    	 stty.c: context is ERROR_INTERCATIVE
    	 rm.c: restore 3d before exit
    04-09-24 pathchk.c: fix docs
    04-09-14 date.c: add %| and %& --parse docs
    04-08-27 cp.c: add FTW_DC check -- duh
    04-08-01 fmt.c: handle last char != '
    04-07-22 date.c,uname.c: access() => eaccess()
    04-07-01 fmt.c: handle large input lines -- ouch
    04-06-11 id.c: fix -r to output something!
    04-05-27 expr.c: fix `:' op subexpression output
    04-04-15 chmod.c: follow symlink for relative mode
    04-04-12 Makefile: add STDCHMOD (for osf.alpha)
    04-03-19 tail.c: handle -f sfreserve() large chunk failure
    04-02-29 cp.c: decouple -f and -i for standard CONFORMANCE
    	 cp.c: mv now attempts rename() before remove()+rename()
    	 date.c: -f format or +format disables system clock set
    04-02-14 cp.c: add -F --fsync to call fsync(2) for each copied file
    04-01-05 head.c: -s now uses opt_info.number for >2Gb skip
    03-09-18 tail.c: add --log
    03-09-11 rm.c: add --unconditional
    03-08-11 fold.c: add --delimiter=c to break at c
    03-07-28 features/time: change settimeofday() test to 2nd arg of (void*)0
    	 expr.c: add {match,substr,index,length,quote}
    03-07-15 fmt.c: fix trailing space bug
    03-06-20 uname.c: fix -p constant string overwrite
    03-06-04 stty.c: add undef to control assignment docs
    03-05-31 uname.c: add -f and sysinfo()/confstr() compatibility via astconf()
    03-05-27 rm.c: fix inappropriate "/.." append path overflow
    	 cut.c: snarf from dgk
    03-05-18 rm.c: check st_nlink to verify progress w.r.t. ftwalk/fts
    03-05-15 join.c: fix stealth -v2 bug (thanks ahs)
    03-05-04 wc.c: drop trailing space for `wc -l < file'
    03-03-21 date.c: add %Q/recent/distant/ docs
    03-02-19 date.c: fix %+|!flag docs
    02-11-14 update for cmdinit() 4th arg and ERROR_NOTIFY for interrupt cleanup
    02-10-02 date.c: tmform() => tmfmt()
    02-09-30 date.c,uname.c: change execv() calls to procrun(): exec|exit => bad
    02-09-06 wclib.c: fix 1 char-at-a-time miscount bug
    02-08-19 chgrp.c: convert to use <cdt.h>
    02-07-23 join.c: fix comm snarf typo
    02-04-05 date.c: add %u
    02-01-24 stty.c: ifdef a few more macros for uts (yes, its still running)
    01-12-14 date.c: clarify %z doc
    01-10-31 mkdir.c: mkdir() on existing dir could fail with errno!=EEXIST
    	 uname.c: add execve() loop check for unknown options
    01-10-29 tail.c: SF_SHARE on only if not reading through EOF
    01-10-11 getconf.c: fix usage typos
    01-09-11 cp.c,cmd.h: handle . in argv[0]
    	 cp.c: add O_BINARY to all open() calls
    01-09-06 tail: input streams must be SF_SHARE -- duh
    01-07-16 stty: fix cntl() macro for CC_NATIVE!=CC_ASCII
    01-05-31 date: fix /bin/date fallback logic
    	 stty: fix a few mismatched flags, -a and -g option logic
    	 stty: tone down sane to modify current settings rather than from zero
    01-05-01 uname: -i => -h, add sol.sun4 -i, add sgi -R, punt to /usr/bin/uname
    01-04-17 date,rm: add
    01-03-07 cp: fix readonly string mod on "."
    01-01-23 cp: `cp foo' => `cp foo .' only for CONFORMANCE!=standard
    00-12-01 cut: multibyte support
    00-10-31 mkdir: handle races by checking EEXIST
    00-09-20 cp: copy argv to stack before modifying in place
    00-05-18 add setlocale(LC_ALL,"")
    00-04-30 join: drop weird opt_info.argv reference
    00-03-17 expr: add == operator -- duh
    	 cp,ln,mv: delay pathcanon() on destination to verify `cp a b/.'
    	 getconf: use astgetconf for proper message control
    	 ERROR_translate: dictionary update
    00-03-08 tail: handle multiple -f files
    00-03-07 fmt: add
    00-03-07 dirname: handle PATH_LEADING_SLASHES as documented
    	 tail: accept + options
    00-02-14 chmod: --ignore-umask to ignore umask(2) in symbolic expressions
    	 chmod,chgrp,cp: use FTS_NOSEEDOTDIR for correct path construction
    	 cat: fix -n (was ignored, wow)
    00-01-27 getconf: add "-a" and "-v spec" for sol7.* compatibility
    99-09-09 join: fix -j1 vs. -j 1, add --ignorecase
    99-06-22 paste: defualt delim in writable string
    99-06-16 cat: fix --dos-ouput typo
    99-06-11 cp: tighten chown() diagnostics
    99-06-08 expr: nothing for NULL string bug fix
    99-05-21 paste: fix missing newline columnize bug
    99-05-20 mv: do not check for `mv foo foo' since rename() handles it
    99-05-01 cmp,comm,cp/mv/ln,expr,fold,getconf,head: long options
    	 join,logname,paste,pathchk,tail,tee: long options
    99-04-10 uname: long options, stdize -a
    	 chmod,head,tail,rev: long options
    	 cut: long options, pass regression test 02
    99-04-07 cat: long options, fix O_TEXT modes
    99-01-11 tail: fix +n
    	 join: another ggs/psm bug
    	 join: all 1 and/or 2 to be unseekable
    99-01-01 cp: fix -p
    	 chmod: drop -l option because of clash with l (lock) mode
    98-12-25 cat: add -T to sfopen(,,"rt")
    98-11-11 chgrp,chmod: cannot open file stream => not found
    	 join: fix another ggs/psm bug; thanks guys
    98-10-20 cp: fix cp -rp to update dir times too
    98-09-22 join: fix ggs null field bug
    98-08-11 join: fix last regression test bug
    98-05-29 join: add jp->common to handle boundary conditions
    98-03-11 cat,cp,rev,tee: fix sfmove() error checks
    98-03-01 join: fix bug that emitted records more than once after eof
    	 cp: fix sfmove() error check
    98-02-14 cp: -R physical, -[HLP], -r getconf(PATH_RESOLVE)
    98-01-11 cp: check sfclose() return value
    98-01-07 chown,chgrp,chmod: use fts for -R
    	 mkdir: fix -p default mode
    97-12-07 mkdir: fix umask() reset
    97-11-11 chown,chgrp: proper interpretation of -h,-l for lchown()
    	 chown,chgrp: only chown() if uid or gid change
    97-10-31 mkdir: do umask right
    97-08-11 cmdinit: clear opt_info.index to allow multiple calls
    	 cp,ln,mv: add
    97-07-17 join: fix a few more -a bugs
    97-05-31 expr: optget() only if CONFORMANCE==standard
    97-04-01 join: fix a few bugs that make it work!
    96-12-25 head: sfset(sfstdin,SF_SHARE,1)
    	 Makefile: add -last to cmd lib list
    	 drop function __IMPORT__
    96-08-11 tail: check for truncated file and rewind for -f
    96-04-08 update <cmd.h>
    96-02-29 uname: -a like std, -l for everything
    	 id: add -a (default)
    96-02-14 wc: speed up inner loop newline breakout
    96-01-30 unused var cleanup
    96-01-01 AT&T Research now
    	 pathchk: handle getcwd(0,0) error
    	 expr: switch to <regex.h>
    95-11-11 add expr.c
    	 fix cut exit code and -s optimization
    95-10-11 add extern b_* to cmd.h
    	 add void* context 3rd arg to b_main()
    95-05-09 add getconf
    	 cat -u avoids mmap
    	 add chown|chgrp -m uid|gid map file
    	 add chown|chgrp -P for systems with lchown(2)
    	 chown|chgrp -P => lstat() too!
    	 chmod|chown|chgrp -HLP
    95-04-01 version 1.2
    	 add rmdir
    95-02-14 fix mkdir -p symlink bug
    	 fix mkdir '/' skip bug that went one too far
### libcoshell changes
    12-02-22 coinit.c: handle non-identifier export var names
    11-12-13 cowait.c: handle sfpoll() error return on interrupt
    11-11-21 cowait.c: poll before blocking read to weed out killed jobs (no 'x' message)
    11-08-30 codata.c,coopen.c: drop macro "..." catenation for old cc
    10-08-11 coinit.c: force _BLD_DLL for environ intercept
    10-06-01 sync with ast api 20100601
    10-05-19 cokill.c: do cowait(co,co,0) to drain pending messages
    10-05-15 coshell.h,coopen.c: add CO_ORPHAN for PROC_ORPHAN
    10-05-11 coopen.c: add PROC_ORPHAN for CO_SHELL
    10-05-10 coopen.c: no atexit() for CO_SHELL
    10-04-15 first ksh93u local job pool tests work (service daemon tbd)
    10-04-14 cowait.c: add 3rd cowait() arg timeout; 0 Coshell_t* operates on all open coshells
    10-04-10 coshell.h: add CO_SHELL for shell using coshell!
    09-12-09 coexport.c: add runtime CO_ENV_EXPORT hook that avoids changing environ
    08-10-28 coopen.c: close write side of parent msgfd -- doh
    08-04-28 coexec.c: check for fd 1,2 equivalence before CO_SERIALIZE 2>&1
    07-10-29 coshell.h,coexec.c: fix procrun()/system() intercept logic
    07-08-15 add CO_SEPARATE,CO_MODE_SEPARATE for separate shell+wait per action
    07-04-09 Makefile: $(CC.PIC) to allow archive to be pulled into other dlls
    06-08-22 coshell.h: procrun => coprocrun, system => cosystem
    06-08-09 coshell.h: export CO_ENV_MSGFD for COSHELL=coshell
    06-08-02 coexec.c: Cojob_t.flags&CO_SERVICE for service requests
    06-08-02 cokill.c: cokill() signal==0 => kill CO_SERVICE jobs
    06-07-27 coexec.c: drop server cowait() that bypassed caller
    06-06-21 coexec.c: add non-block cowait() to drain responses
    06-06-11 fix service intercept cleanup
    06-05-24 add service=name:init lightweight service intercepts
    05-04-19 cowait.c: beef up invalid message tests and diagnostics
    05-04-11 drop fixed CO_MSGFD for $_coshell_msgfd
    05-04-07 coexec.c: fix !_lib_fork&&_map_spawnve close-on-exec redirection
    04-09-22 cowait.c: remove CO_SERIALIZE temporaries after listing -- duh
    04-09-01 co*: add CO_SERIALIZE
    04-07-22 system.c: access() => eaccess()
    04-02-11 coinit.c: fix CO_CROSS PATH initialization
    02-10-30 coclose.c: fix reference-after-free bug in coclose()
    02-01-31 codata.c,coopen.c: fix CO_MSGFD parameterization
    02-01-24 coopen.c: fix small memory leak
    01-10-26 coopen.c: hung sfclose(fp) -> close(sffileno(fp)) -- wow
    01-09-11 coinit.c: fix coident[] for ancient bsh that die on `test == 1'
    	 coinit.c: and fix coident[] to weed out buggy ksh88i trap on exit
    01-05-31 co*: add CO_CROSS, expose CO_DEVFD
    01-04-23 coquote: add state.type to avoid getenv() overwrite on some systems
    01-01-01 cokill: killjob => cokilljob, killshell => cokillshell
    00-12-18 coinit: CO_OSH ? "${!-$$}" : "${!:-$$}"
    00-10-25 codata: $ZSH_VERSION is not ksh
    00-02-14 procrun,system: system(3) returns wait() status (not shell status)
    99-11-19 co*: add CO_OSH for bsdi lack of times(1)
    	 coexec: CO_IGNORE for all but real ksh
    98-06-22 coinit: quote cd path arg
### libsum changes
    12-02-29 sum-sha2.c: bitcount[] order reversed to allow a single noalias buffer copy
    09-09-28 sumlib.c: use simple (faster) method name match function
    08-06-05 sum-lmd.c: align context to largest int
    08-05-01 sumlib.c: add some -lmd verification checks
    08-02-11 sum-lmd.c,features/sum: add wrapper for solaris -lmd
    07-10-29 sum.h,sumlib.c: add SUM_LEGACY for legacy output format
    07-09-21 sum-sha1.c: reinstate Steve Reid's public domain implementation
    07-07-26 sumlib.c: drop GPL sum-sha1.c
    05-02-14 sumlib.c: split into sum-*.c
    05-02-14 sum-sha2.c: add SHA { 256 384 512 }
    04-02-29 Makefile: compile with $(CC.PIC) for codexlib/sum $(CC.DLL)
    03-12-16 add { crc prng } generic methods and maps[] to these methods
    03-12-16 sum.h,sumlib.c: add sumdata()
    03-09-29 sumlib.c: fix FNV to use ^ instead of +
    03-04-28 sumlib.c: drop md5 `zeroize' for performance
    	 sumlib.c: add FIPS 180-1 SHA-1
### libdll changes
    12-07-25 add debug diagnostics
    11-10-11 dll_lib.c: add { dllnames() dll_lib() }
    10-10-20 dllscan.c: version arg "-" => 0
    10-10-19 dllplug.c: fix bug that wiped out dlopen() error message
    10-10-19 dllplug.c: un-localize lookup names (happens with cut and paste)
    10-10-19 dllscan.c: still no code for implicit libs missed by dlopen()
    10-08-02 dllplug.c: fix local path dllcheck() call
    10-05-28 dllplug.c: add dllplugin() with dllcheck() version check
    10-05-28 dllcheck.c: add dllcheck() to do plugin_version() checks
    10-05-28 dllerror.c: add dllerror(int retain) for dll*() and dl*() messages
    09-11-17 dllscan.c: handle name[-.]version in dlsopen()
    09-04-15 dllopen.c: add, use dllopen() internally to wrap dlopen()
    08-05-12 dllscan.c: LIBSUFFIX==.dylib => default plugin version match 0.0
    06-10-11 dllscan.c: check sfstruse() return values -- doh
    06-01-25 dllplug.c: add errorf() library message for dlopen() error
    05-02-14 dllscan.c: "" || "-" => NiL
    04-10-01 dllfind.c: drop ksh "builtin" workaround
    	 dllscan.c: directory prefix in name limits search to dir and siblings
    04-07-22 dllscan.c: access() => eaccess()
    04-01-30 dllfind.c: dllplug(error_info.id) then dllplug(0)
    04-01-28 dllscan.c: update for new plugin scheme: lib/foo/bar.xxx
    	 dllplug.c: add dllplug() for plugin dllfind()
    03-03-12 dllfind.c: dlopen() with RTLD_GLOBAL|RTLD_PARENT defaults
    03-02-11 dllscan.c: change LIBPATH to <dir>[:<env>[:<pat>]][,...]
    03-01-08 dllscan.c: hack version logic again -- is consistency rocket science?
    03-01-07 dlfcn.c: fix darwin.ppc dlopen/dlsym/dlclose
    02-11-18 dllfind.c: add path,size args (with backwards compatibility checks)
    02-11-15 dllfind.c: check for ./path if '.' in path but no '/'
    02-08-30 dllfind.c: fix a bug that returned uninitialized value on not found
    02-08-28 dllscan.c: handle and display bin as a sibling dir
    02-07-31 dllscan.c: add dllsopen,dllsread,dllsclose
    	 dllfind.c: use dllsopen,dllsread,dllsclose
    02-07-26 dllfind.c: add dllinfo()
    02-06-27 dllnext.c: define _GNU_SOURCE to enable RTLD_NEXT
    02-03-17 dllfind.c: fix dll prefix search (for cygwin)
    02-01-11 features/dll: include <dlfcn.h> only if _hdr_dlfcn&&_lib_dlopen
    01-10-31 dlfcn.c: change hp.pa dlopen() prototype (<dlfcn.h> but no -ldl!)
    01-09-25 dllfind: add LIBSUFFIX
    01-07-17 dllfind: do at least one dlopen() to prime dlerror()
    01-05-29 dlopen: fix dlopen(0,0) for HP
    01-04-20 dllfind: use getconf HOSTTYPE LIBPATH LIBSUFFIX
    01-02-14 features/dll: fix unbalanced ' quote and ancient hostinfo reference
    00-01-26 dlllook: add -- dlsym() with `_' weak prefix fallback
    99-04-01 features/dll: drop <stdio.h> -- iffe protos printf
    99-03-19 static=1 for all but win32.*
    98-06-01 dllfind: fix version search
    98-03-11 features/dll: probe for _DLL_RLD_SYM
    98-03-01 dllnext: fix to work!
    98-01-23 -ldl test moved to lib0ast
    98-01-11 update for astconf("LIBPATH")
    	 add dllnext(flags) to uncover next layer
    	 dllfind() and dllnext() in separate files (for 3d)
    97-10-11 move from libast so libast can link static
|  | August 07, 2012