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Release 93u+m/1.0.0-rc.1

Browse source 
We're nearly there!

I intend to release ksh 93u+m/1.0.0 on 2022-08-01, precisely ten
years after the last canonical 93u+ release.

We have a week until then, so here's a release candidate. Please
try as hard as you can to break it, and to help fix known bugs.

As of this commit, the 1.0 branch is feature-frozen and will only
get bugfixes.

src/cmd/ksh93/fun/man:
- Last-minute fix: .man.try_os_man(): do not look for arguments
  with / in section 1 and 8; this can cause false positives.
This commit is contained in:
Martijn Dekker 2022-07-25 03:38:23 +02:00
parent 68037b8524
commit b7817c3750
8 changed files with 113 additions and 176 deletions
Download patch file Download diff file Expand all files Collapse all files

58
ANNOUNCE
View file

@ -1,32 +1,46 @@
Announcing: KornShell 93u+m 1.0.0-beta.(unreleased)
Announcing: KornShell 93u+m/1.0.0-rc.1
https://github.com/ksh93/ksh
In May 2020, when every KornShell (ksh93) development project was
abandoned, development was rebooted in a new fork based on the last
stable AT&T version: ksh 93u+. This new fork is called ksh 93u+m as a
permanent nod to its origin. We're restarting it at version 1.0. Seven
months after the first beta, the second one is ready. Please test this
second beta and report any bugs you find, or help us fix known bugs.
[This is a release candidate. The announcement below is preliminary.]
We're now the default ksh93 in some OS distributions, at least Debian
and Slackware! Even though we don't think it's stable release quality
yet, the consensus seems to be that 93u+m is already much better than
the last AT&T release.
In May 2020, when every KornShell (ksh93) development project was abandoned,
Martijn Dekker reboted development in a new fork based on the last stable
AT&T version: ksh 93u+. He was soon joined by two main developers and a
number of other contributors. This new fork is called ksh 93u+m as a
permanent nod to its origin.
Now, more than two years, two beta versions, a number of enhancements, and
rougly a thousand bugfixes later, *and* precisely ten years after the last
canonical 93u+ release, version 93u+m/1.0.0 of the KornShell is released!
As an initial release, this still has known bugs; please do use this version,
but also continue to test it. See TODO to help us fix the known bugs.
CONTRIBUTORS
Main developers: Martijn Dekker, Johnothan King, hyenias
Contributors: Andy Fiddaman, Anuradha Weeraman, Chase, Gordon Woodhull,
Govind Kamat, Harald van Dijk, Lev Kujawski, Marc Wilson, Ryan Schmidt,
Sterling Jensen
Direct contributors: Andy Fiddaman, Anuradha Weeraman, atheik, Chase,
Finnbarr P. Murphy, George Lijo, Govind Kamat, Harald van Dijk, Lev
Kujawski, Marc Wilson, Ryan Schmidt, Sterling Jensen, Trey Valenta, vmihalko
All applicable third-party OS distribution patches from OpenSUSE, Red Hat
and Solaris have been merged. These are detailed and acknowledged here:
https://github.com/ksh93/ksh/wiki#upstreamed-third-party-ksh-93u-patches
Many fixes have also been backported from the AT&T 93v- beta as well as the
former ksh2020 project lead by Kurtis Rader and Siteshwar Vashisht; we
appreciate and benefit from their work. Many thanks also to Siteshwar for
graciously donating his 'ksh93' GitHub organisation account!
HOW TO GET IT
Please download the source code tarball from our GitHub releases page:
https://github.com/ksh93/ksh/releases
To build, follow the instructions in README.md or src/cmd/ksh93/README.
Or ask your distribution package manager to upgrade ksh93 to this version.
HOW TO GET INVOLVED
To report a bug, please open an issue at our GitHub page (see above).
@ -35,7 +49,7 @@ To get involved in development, read the brief policy information in
README.md and then jump right in with a pull request or email a patch.
See the TODO file in the top-level directory for a to-do list.
### MAIN CHANGES between 1.0.0-beta.2 and 1.0.0-(unreleased) ###
### MAIN CHANGES between 1.0.0-beta.2 and 1.0.0 ###
New features in built-in commands:
@ -83,6 +97,11 @@ New features in shell options:
not immediately executed but instead loaded into the next prompt's edit
buffer, allowing further changes.
- When the -b/--notify shell option is on and the vi or emacs/gmacs shell
line editor is in use, 'Done' and similar notifications from completed
background jobs are now inserted directly above the line you're typing,
without affecting your command line display.
### MAIN CHANGES between 1.0.0-beta.1 and 1.0.0-beta.2 ###
New features in built-in commands:
@ -199,11 +218,6 @@ New command line editor features:
mode, <ESC> 7 <left-arrow> will now move the cursor seven positions to
the left. In vi control mode, this would be entered as: 7 <left-arrow>.
- When the -b/--notify shell option is on and the vi or emacs/gmacs shell
line editor is in use, 'Done' and similar notifications from completed
background jobs are now inserted directly above the line you're typing,
without affecting your command line display.
New shell language features:
- The &>file redirection shorthand (for >file 2>&1) is now available for

7
COPYRIGHT
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@ -17,6 +17,7 @@ ksh 93u+m general copyright notice
# Martijn Dekker <martijn@inlv.org> #
# Johnothan King <johnothanking@protonmail.com> #
# hyenias <58673227+hyenias@users.noreply.github.com> #
# Andy Fiddaman <andy@omniosce.org> #
# Anuradha Weeraman <anuradha@weeraman.com> #
# atheik <atteh.mailbox@gmail.com> #
# Chase <nicetrynsa@protonmail.ch> #
@ -24,8 +25,14 @@ ksh 93u+m general copyright notice
# George Lijo <george.lijo@gmail.com> #
# Govind Kamat <govind_kamat@yahoo.com> #
# Harald van Dijk <harald@gigawatt.nl> #
# Kurtis Rader <krader@skepticism.us> #
# Lev Kujawski <int21h@mailbox.org> #
# Marc Wilson <posguy99@gmail.com> #
# Ryan Schmidt <ryandesign@macports.org> #
# Sterling Jensen <5555776+sterlingjensen@users.noreply.github.com> #
# Siteshwar Vashisht <svashisht@redhat.com> #
# Trey Valenta <t@trey.net> #
# vmihalko <35222576+vmihalko@users.noreply.github.com> #
# #
########################################################################

6
NEWS
View file

@ -3,7 +3,11 @@ For full details, see the git log at: https://github.com/ksh93/ksh/tree/1.0
Any uppercase BUG_* names are modernish shell bug IDs.
2022-07-24:
2022-07-25:
- Release candidate: ksh 93u+m/1.0.0-rc.1.
2722-07-24:
- Add new 'man' function in src/cmd/ksh93/fun/man. This integrates the --man
self-documentation of ksh built-in and external AST commands with your

60
README.md
View file

@ -2,7 +2,8 @@
# KornShell 93u+m
This repository is used to develop bugfixes
This is version 1.0.x of the 93u+m fork of the KornShell, including a
sizeable number of enhancements and roughly a thousand bugfixes compared
to the last stable release (93u+ 2012-08-01) of
[ksh93](http://www.kornshell.com/),
formerly developed by AT&T Software Technology (AST).
@ -10,57 +11,13 @@ The sources in this repository were forked from the
GitHub [AST repository](https://github.com/att/ast)
which is no longer under active development.
For information on the shell, see
[`src/cmd/ksh93/README`](https://github.com/ksh93/ksh/tree/1.0/src/cmd/ksh93#readme)
and other files in the same directory.
For user-visible fixes, see [NEWS](https://github.com/ksh93/ksh/blame/1.0/NEWS)
and click on commit messages for full details.
For all fixes, see [the commit log](https://github.com/ksh93/ksh/commits/).
To see what's left to fix, see [the issue tracker](https://github.com/ksh93/ksh/issues).
## Policy
1. Fixing bugs is main focus of the 1.x series.
Major feature development is for future versions (2.x and up).
2. No major rewrites. No refactoring code that is not fully understood.
3. No changes in documented behaviour, except if required for compliance with the
[POSIX shell language standard](https://pubs.opengroup.org/onlinepubs/9699919799/utilities/contents.html)
which David Korn [intended](http://www.kornshell.com/info/) for ksh to follow.
4. No 100% bug compatibility. Broken and undocumented behaviour gets fixed.
5. No bureaucracy, no formalities. Just fix it, or report it: create issues,
send pull requests. Every interested party is invited to contribute.
6. To help increase everyone's understanding of this code base, fixes and
significant changes should be fully documented in commit messages.
7. Code style varies somewhat in this historic code base.
Your changes should match the style of the code surrounding them.
Indent with tabs, assuming an 8-space tab width.
Opening braces are on a line of their own, at the same indentation level
as their corresponding closing brace.
Comments always use `/*`...`*/`.
8. Good judgment may override this policy.
## Why?
Between 2017 and 2020 there was an ultimately unsuccessful
[attempt](https://github.com/att/ast/tree/2020.0.1)
to breathe new life into the KornShell by extensively refactoring the last
unstable AST beta version (93v-).
While that ksh2020 effort is now abandoned and still has many critical bugs,
it also had a lot of bugs fixed. More importantly, the AST issue tracker
now contains a lot of documentation on how to fix those bugs, which made
it possible to backport many of them to the last stable release instead.
This ksh 93u+m reboot now incorporates many of these bugfixes,
plus patches from
[OpenSUSE](https://github.com/ksh93/ksh/wiki/Patch-Upstream-Report:-OpenSUSE),
[Red Hat](https://github.com/ksh93/ksh/wiki/Patch-Upstream-Report:-Red-Hat),
and
[Solaris](https://github.com/ksh93/ksh/wiki/Patch-Upstream-Report:-Solaris),
as well as many new fixes from the community
([1](https://github.com/ksh93/ksh/pulls?q=is%3Apr+is%3Amerged),
[2](https://github.com/ksh93/ksh/issues?q=is%3Aissue+is%3Aclosed+label%3Abug)).
Though there are many
[bugs left to fix](https://github.com/ksh93/ksh/issues),
we are confident at this point that 93u+m is already the least buggy version
of ksh93 ever released.
As of late 2021, distributions such as Debian and Slackware have begun
to package it as their default version of ksh93.
For all fixes, see [the commit log](https://github.com/ksh93/ksh/commits/1.0).
For known issues in the current release, see [TODO](https://github.com/ksh93/ksh/blob/1.0/TODO).
## Build
@ -104,6 +61,9 @@ bin/package help
```
Many other commands in this repo self-document via the `--help`, `--man` and
`--html` options; those that do have no separate manual page.
The autoloadable `man` function in
[`src/cmd/ksh93/fun/man`](https://github.com/ksh93/ksh/blob/1.0/src/cmd/ksh93/fun/man)
integrates this self-documentation into your regular `man` command.
### Test

130
TODO
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@ -1,124 +1,76 @@
TODO for ksh 93u+m
The following bugs and issues are known for ksh 93u+m 1.0.0-rc1:
See the issue tracker for up-to-date information:
https://github.com/ksh93/ksh/issues
______
Enhancements to do:
* Add -T (-o functrace) option as in bash
https://github.com/ksh93/ksh/issues/162
* History pattern search menu (SHOPT_EDPREDICT) needs work
https://github.com/ksh93/ksh/issues/233
* Use real pipes instead of sockets
https://github.com/ksh93/ksh/issues/327
______
Known bugs in ksh 93u+m 1.0.0-beta.2 (HELP IS WANTED to fix these):
* Memory leak when initialising associative array in subshell
Memory leak when initialising associative array in subshell
https://github.com/ksh93/ksh/issues/94
* command substitution botches output of non-waited-for child processes
command substitution botches output of non-waited-for child processes
https://github.com/ksh93/ksh/issues/124
* Intermittent coprocess hang on Debian/Ubuntu and Solaris
https://github.com/ksh93/ksh/issues/132
* wrong typeset -p output after unsetting multidimensional array elements
wrong typeset -p output after unsetting multidimensional array elements
https://github.com/ksh93/ksh/issues/148
* File descriptor is unexpectedly closed after exec in subshell
https://github.com/ksh93/ksh/issues/161
* printf %T date parsing: GNU-style "ago" date spec completely broken
printf %T date parsing: GNU-style "ago" date spec completely broken
https://github.com/ksh93/ksh/issues/182
* typeset -L/-R: string length breaks on multibyte characters
typeset -L/-R: string length breaks on multibyte characters
https://github.com/ksh93/ksh/issues/189
* Linux i386: variable expansion corruption in single-line function
Unicode code points in $'...' strings should vary according to the locale
https://github.com/ksh93/ksh/issues/193
Variable expansion corruption in single-line function on 32-bit systems
https://github.com/ksh93/ksh/issues/203
* Segfault with very large extended glob patterns
Segfault with very large extended glob patterns
https://github.com/ksh93/ksh/issues/207
* funcname.ksh crashes under standard malloc
https://github.com/ksh93/ksh/issues/212
* process substitution cannot be part of a larger argument
process substitution cannot be part of a larger argument
https://github.com/ksh93/ksh/issues/215
* Compound array regression on OpenBSD with standard malloc
https://github.com/ksh93/ksh/issues/229
* 'typeset -m'-related crash on OpenBSD compiled with standard malloc
https://github.com/ksh93/ksh/issues/231
* Freeze/crash on OpenBSD with -D_std_malloc involving typeset and command substitution
https://github.com/ksh93/ksh/issues/264
* Nested compound assignment misparsed in $(...) command substitution
Nested compound assignment misparsed in $(...) command substitution
https://github.com/ksh93/ksh/issues/269
* Crash on bin/shtests -px heredoc
https://github.com/ksh93/ksh/issues/306
* Multibyte characters get corrupted when KEYBD trap is set
https://github.com/ksh93/ksh/issues/307
* .sh.match index array result issues, crash after unset
https://github.com/ksh93/ksh/issues/308
* Builtins don't handle I/O errors
Builtins don't handle I/O errors
https://github.com/ksh93/ksh/issues/313
* block devices not seekable when open on fd 0, 1 or 2
https://github.com/ksh93/ksh/issues/318
* bug in printf when %b and %x$ are used in same format
bug in printf when %b and %x$ are used in same format
https://github.com/ksh93/ksh/issues/324
* namespaces don't work properly when defined within functions
namespaces don't work properly when defined within functions
https://github.com/ksh93/ksh/issues/325
* Associative arrays of various types fail to be unset
Associative arrays of various types fail to be unset
https://github.com/ksh93/ksh/issues/345
* types survive exec of hashbangless script
https://github.com/ksh93/ksh/issues/350
Variable with discipline function in subshell causes memory leak
https://github.com/ksh93/ksh/issues/404
* Backtick command substitutions can't nest double quotes
https://github.com/ksh93/ksh/issues/352
Memory leak(s) when modifying PATH in various contexts
https://github.com/ksh93/ksh/issues/405
* Line continuation breakage within $(comsub)
https://github.com/ksh93/ksh/issues/367
Discipline function .unset only called once for array subscripts
https://github.com/ksh93/ksh/issues/419
______
Fix regression test failures:
Function autoload apparently broken on DragonFly BSD
https://github.com/ksh93/ksh/issues/432
- There are some serious regression test failures on OpenBSD when ksh
is compiled with AST vmalloc disabled, so the system standard malloc(3)
is used. These probably represent real ksh93 bugs exposed by OpenBSD's
security hardening mechanisms.
confusing behaviour of backreferences with alternation
https://github.com/ksh93/ksh/issues/447
- Several known memory leaks have their tests disabled in tests/leaks.sh
and are marked TODO. These need tracking down and fixing.
Alias expansion loop not detected in command substitution
https://github.com/ksh93/ksh/issues/458
______
Fix currently known bugs affecting shell scripting. These are identified by
their modernish IDs. For exact details, see code/comments in:
https://github.com/modernish/modernish/tree/0.16/lib/modernish/cap/
Make KEYBD trap handling code multibyte-aware
https://github.com/ksh93/ksh/issues/460
- BUG_BRACQUOT: shell quoting within bracket patterns has no effect. This
bug means the '-' retains it special meaning of 'character range', and an
initial ! (and, on some shells, ^) retains the meaning of negation, even
in quoted strings within bracket patterns, including quoted variables.
$LINENO incorrect after compound assignment
https://github.com/ksh93/ksh/issues/484
- BUG_IFSGLOBS: In glob pattern matching (as in case or parameter
substitution with # and %), if IFS starts with ? or * and the "$*"
parameter expansion inserts any IFS separator characters, those characters
are erroneously interpreted as wildcards when quoted "$*" is used as the
glob pattern.
Tab completion can cause vi mode to switch to "control"
https://github.com/ksh93/ksh/issues/485
Shell quoting within bracket patterns has no effect
https://github.com/ksh93/ksh/issues/488
"$*" does pattern matching if the first char of $IFS is a wildcard
https://github.com/ksh93/ksh/issues/489

2
src/cmd/ksh93/COMPATIBILITY
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@ -1,4 +1,4 @@
ksh 93u+m vs. ksh 93u+
ksh 93u+m/1.0.0 vs. ksh 93u+
The following is a list of changes between ksh 93u+ 2012-08-01 and the new
ksh 93u+m reboot that could cause incompatibilities in rare corner cases.

2
src/cmd/ksh93/fun/man
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@ -111,7 +111,7 @@ namespace man
try_os_man()
{
[[ $(command man -s "$1" "$2" 2>/dev/null) == *$'\n'*$'\n'*$'\n'* ]]
[[ $2 != */* && $(command man -s "$1" "$2" 2>/dev/null) == *$'\n'*$'\n'*$'\n'* ]]
}
# The main function puts it all together. When given a single argument,

4
src/cmd/ksh93/include/version.h
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@ -22,8 +22,8 @@
#include <releaseflags.h>
#define SH_RELEASE_FORK "93u+m" /* only change if you develop a new ksh93 fork */
#define SH_RELEASE_SVER "1.0.0-beta.2" /* semantic version number: https://semver.org */
#define SH_RELEASE_DATE "2022-07-24" /* must be in this format for $((.sh.version)) */
#define SH_RELEASE_SVER "1.0.0-rc.1" /* semantic version number: https://semver.org */
#define SH_RELEASE_DATE "2022-07-25" /* must be in this format for $((.sh.version)) */
#define SH_RELEASE_CPYR "(c) 2020-2022 Contributors to ksh " SH_RELEASE_FORK
/* Scripts sometimes field-split ${.sh.version}, so don't change amount of whitespace. */