### ast-ksh package

The AT&T Software Technology ast-ksh package from AT&T Labs Research contains ksh and support libraries. This is the minimal set of components needed to build ksh. Components in this package:

ksh93 | libast | libcmd | libdll

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.research.att.com/sw/license/ast-open.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 after 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

ksh93 | libast | libcmd | libdll

    All recorded changes follow.

### ksh93 changes

    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 subsitituions 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 under on rare ocassions a job completion interrupt
    	  could cause to core dump has been fixed.
    03-06-26  A bug in which process substitution embeded 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 ouput 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 sligthly 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 containg 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 interpretted 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 MULTIBYE 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 \, <JOIN>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 <JOIN>.
    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
    	  beed 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

    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:lll<?>ddd]
    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, <JOIN>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  splice
    	 add fmtesc() to complement stresc()
    	 add LS_NUMBER to fmtls()
    	 drop spurious optusage() ' '

### libcmd changes

    03-07-15 fmt.c: ix 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 wierd 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

### libdll changes

    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

| July 25, 2003