platform_external_mksh/src/var.c, branch pie-cuttlefish-testing

Upgrade to mksh R56c.

2018-02-07T20:46:26+00:00

R56c is a bugfix-only release everyone must upgrade to:

[komh] Remove redundant OS/2-specific code, clean up others
[komh, tg] Fix drive-qualified (absolute and relative) DOS-style path support in realpath functionality, partially other places
[tg] Don’t substitute ${ENV:-~/.mkshrc} result again
[tg] Improve OS/2 $PATH (et al.) handling, drive-relative paths
[tg] Add MKSH_ENVDIR compile-time option for Jehanne and Plan 9
[tg] Limit nesting when parsing malformed code (Debian #878947)
[tg] Update wcwidth data with bugfixed script (still Unicode 10; resulting values are identical to glibc git master for extant chars)
[Dr. Werner Fink] Raise some time limits in the testsuite
[Shamar] Add support for the Jehanne operating system
[komh] Set stdin to text mode before executing child processes on OS/2
[komh] Pass arguments via a resonse file if executing a child fails
[Dr. Werner Fink] Early locale tracking as a compile-time option
[tg] Fix regressions introduced with new fast character classes

Bug: N/A
Test: builds and boots
Change-Id: I44da7a8bb9859a0357bcd59891dd4f2cfc199733

Upgrade to mksh R56b.

2017-09-22T23:21:10+00:00

R56b is a bugfix-only release everyone should upgrade to:

[tg] Reference the FAQ webpage
[panpo, Riviera] Fix documentation bug wrt. Esc+Ctrl-L
[tg, Larry Hynes] Fix “0” movement in vi mode
[tg] Replace broken libcs’ offsetof macro with MirBSD’s

R56 is a bugfix release with some experimental fixes:

[tg, Seb] Do not apply alias name restrictions to hash/tilde tracking
[tg] Restore ‘.’, ‘:’ and ‘[’ in alias names (“[[” is still forbidden)
[tg] Fix accidentally defanged $PATHSEP test
[tg] On ^C (INTR and QUIT edchars), shove edit line into history
[iSKUNK, tg] Begin porting to z/OS using EBCDIC encoding, incomplete
[tg] Redo fast character classes code, adding POSIX and other helpers
[tg] bind parses backslash-escaped ‘^’ (and ‘\’) as escaped
[tg] Building with -DMKSH_ASSUME_UTF8=0 no longer causes a known failure in the testsuite
[tg] New test.sh option -U to pass a UTF-8 locale to use in the tests
[tg] re_format(7) BSD: [[ $x = *[[:\<:]]foo[[:\>:]]* ]]
[tg, iSKUNK] Use Config in check.pl only if it exists
[tg] New matching code for bracket expressions, full POSIX (8bit)
[komh] Exclude FAT/HPFS/NTFS-unsafe tests on OS/2 (and Cygwin/MSYS)
[tg] Update to Unicode 10.0.0
[tg, selk] Make readonly idempotent
[tg, multiplexd] When truncating the persistent history, do not change the underlying file, do all operations on the locked one; do not stop using the history at all if it has been truncated
[tg, Jörg] Turn off UTF-8 mode upon turning on POSIX mode
[Martijn Dekker, Geoff Clare, many on the Austin list, tg] In POSIX mode, make the exec builtin force a $PATH search plus execve
[tg] Fix GCC 7, Coverity Scan warnings
[tg, Michal Hlavinka] Track background process PIDs even interactive
[tg] Always expose mksh’s hexdump shell function; speed it up by working on the input in chunks; use character classes to make it EBCDIC safe
[tg] Revamp dot.mkshrc default editor selection mechanism

Bug: N/A
Test: builds and boots
Change-Id: I35d624c4352c1b7c1ee499f9680712a30c64323b

Upgrade to mksh R55.

2017-04-12T23:52:30+00:00

R55 is mostly a feature release with summary bugfixes:

[komh] Fix OS/2 search_access() and UNC path logic
[tg] Undocument printf(1) to avoid user confusion
[Jean Delvare, tg] Fix printf builtin -R option
[tg] Make ${var@x}, unknown x, fail (thanks izabera)
[tg] ${var=x} must evaluate x in scalar context (10x Martijn Dekker)
[tg] Fixup relation between lksh and mksh, reduce delta
[tg] Improve manpage display; add OS/2 $PATH FAQ
[Jean Delvare] Fix bugs in manpage
[tg] Review tilde expansion, removing “odd use of KEEPASN” and introduce POSIX “declaration utility” concept; wait isn’t one
[tg] Add \builtin utility, declaration utility forwarder
[tg] Make $'\xz' expand to xz, not \0
[tg] Use fixed string pooling (requires the above change in host mksh)
[tg] POSIX declaration commands can have varassign and redirections
[Martijn Dekker] Add typeset -g, replacing homegrown “global”
[Harvey-OS] Disable NOPROSPECTOFWORK, APEX is reportedly fixed now
[tg] Display ulimit -a output with flags; improve Haiku
[tg] Drop old let] hack, use \builtin internally
[tg] Fix padding in Lb64encode in dot.mkshrc
[tg] Move FAQ content to a separate, new FAQ section in the manpage
[tg] Add new standard variable PATHSEP (‘:’, ‘;’ on OS/2)
[Martijn Dekker] Fix LINENO in eval and alias
[komh] Fix “\builtin” on OS/2
[tg] Improve (internal) character classes code for speed
[tg] Fix: the underscore is no drive letter
[tg] No longer hard-disable persistent history support in lksh
[tg] Introduce build flag -T for enabling “textmode” on OS/2 (supporting CR+LF line endings, but incompatible with mksh proper)
[tg] Merge mksh-os2
[tg] Permit changing $OS2_SHELL during a running shell
[tg] Fix multibyte handling in ^R (Emacs search-history)
[tg] Allow “typeset -p arrname[2]” to work
[tg] Make some error messages more consistent
[tg, komh] Disable UTF-8 detection code for OS/2 as unrealistic
[tg, sdaoden] Limit alias name chars to POSIX plus non-leading ‘-’
[tg, Martijn Dekker] Expand aliases at COMSUB parse time
[tg] Make “typeset -f” output alias-resistent
[tg, Martijn Dekker] Permit “eval break” and “eval continue”
[tg] Make -masm=intel safe on i386
[tg] Disambiguate $((…)) vs. $((…)…) in “typeset -f” output
[Jean Delvare] Clarify the effect of exit and return in a subshell
[tg] Simplify compile-time asserts and make them actually compile-time
[tg] Fix ^O in Emacs mode if the line was modified (LP#1675842)
[tg] Address Coverity Scan… stuff… now that it builds again
[Martijn Dekker, tg] Add test -v
[tg] Document set -o posix/sh completely

Bug: N/A
Test: manual
Change-Id: Ifce1d879933a5773e98b4f34f4a9bb86a6bdff3b

Upgrade to mksh R40.

2016-12-08T23:59:56+00:00

From the release notes...

R54 is a bugfix release with moderate new features:

[tg] Simplify and improve code and manual page
[tg] Try GCC 5’s new -malign-data=abi
[tg] Allow interrupting builtin cat even on fast devices (LP#1616692)
[tg] Update to Unicode 9.0.0
[Andreas Buschka] Correct English spelling
[tg] Handle set -e-related error propagation in || and && constructs correctly
[tg] Initialise memory for RNG even when not targeting Valgrind
[tg] Shrink binary size
[Brian Callahan] Improve support for the contemporary pcc compiler
[tg] Fix side effects with lazy evaluation; spotted by ormaaj
[tg] New flags -c (columnise), -l, -N for the print builtin
[Larry Hynes] Fix English, spelling mistakes, typos in the manpage
[tg, ormaah] Return 128+SIGALRM if read -t times out, like GNU bash
[Martijn Dekker] Install both manpages from Build.sh
[Martijn Dekker] Document case changes are ASCII-only
[Ronald G. Minnich, Elbing Miss, Álvaro Jurado, tg] Begin porting to Harvey-OS and APEX (similar to Plan 9 and APE)
[KO Myung-Hun] More infrastructure for the OS/2 (EMX, KLIBC) port

I've continued to disable the cat, realpath, and sleep builtins,
and added print to the list (now I've realized it's unrelated to
the print on the desktop).

Bug: N/A
Test: manual
Change-Id: Iead4c1b572c6f288b2ab2b884125dcb606f1e356

Upgrade to mksh R53a.

2016-08-12T22:06:53+00:00

Note that we skipped R52c because it wouldn't build with clang (thanks to
the "Shave 200 bytes off .text by revisiting string pooling" change).

From the release notes:

R53a is a snapshot/feature release:

[lintian] Fix spelling
[tg] Unbreak multi-line command history broken by history flush
[tg] Fix redefining POSIX functions that were Korn functions before
[tg, TNF] Fix bounds checks in Vi editing mode
[tg] Handle combining characters at end of string or output correctly
[tg] Fix ${!#} ${!?} ${!-} (POSIX, prompted by izabera)
[tg] Fix shf.c-internal buffer overread on printing digits
[J�rg] Fix a typo in the testsuite
[arekm] Increase default edit line size (unless MKSH_SMALL)
[tg] Improve description of Emacs mode keybindings, especially ^U
[tg, arekm, jilles] Abort read builtin in case of read(2) errors
[tg, izabera, carstenh] Fix most of the ambiguous corner cases related to ${[pfx]var[op[word]]} (${@:-1} still unsupported)
[carstenh] Contribute some more testsuite coverage
[tg] WDS_TPUTS now emits QCHAR newline reentrant-safe
[tg] Fix var=<< implementation (LP#1380389)
[tg, FreeBSD] Make XSI test(1) extensions behave as if they were POSIX
[tg, izabera] Add $(<<>> as ROL and ROR operators with their new ^< and ^> spelling as per this proposal
[tg, slagtc] Clear-to-EOL under tmux to work around its anti-feature
[tg, p120ph37] Remove support for using file descriptors with more than a single digit, in preparation for named file descriptors
[tg] Correct, but simplify (at the potential cost of more tty I/O than strictly necessary, though never redundant and (probably) not more than before when it was miscalculated), line clearing and redrawing
[slagtc, tg] Implement new evaluate-region editing command Esc+Ctrl-E
[tg] Prefer external rename utility over the recovery builtin
[tg] Remove redundant full-line redraws
[tg, Natureshadow] Fix errorlevel of ‘.’ (“dot” special builtin) when the sourced script does not run any commands, for POSIX compliance
[tg] Refactor op tokens and edchars to shave off some more bytes
[tg] Fix some bugs in the manpage and some occasional/minor code bugs
[tg, Brian Callahan] Mark tests requiring new perl as !need-pass
[tg, slagtc] Add $KSH_MATCH and, to make it usable, ${foo@/bar/baz}
[tg, Score_Under] Fix bogus patch from OpenBSD: only NULL the global source in unwind when actually reclaiming its Area
[izabera] Mention in the manpage that integer bases go up to 36
[Natureshadow] Fix /= operator broken during refactoring

R52c is a bugfix-only release:

[tg] Shave 200 bytes off .text by revisiting string pooling
[tg, J�rg] Fix manpage for ditroff on Schillix
[tg, wbx] Use sed 1q instead of unportable head(1)
[tg] Implement underrun debugging tool for area-based memory allocator
[tg] Fix history underrun when first interactive command is entered
[tg, bef0rd] Do not misinterpret “${0/}” as “${0//”, fixes segfault
[tg, Stéphane Chazelas] Fix display problems with special parameters
[tg, Stéphane Chazelas] Catch attempt to trim $* and $@ with ?, fixes segfault (Todd Miller did this in 2004 for ${x[*]} already, so just sync)
[Martijn Dekker] Fix “command -p” with -Vv to behave as POSIX requires
[tg, jilles, Oleg Bulatov] Fix recusive parser with active heredocs
[tg] Flush even syntax-failing or interrupted commands to history
[tg, fmunozs] Fix invalid memory access for “'\0'” in arithmetics
[tg] Explicitly reserve SIGEXIT and SIGERR for ksh
[tg, izabera] Catch missing here documents at EOF even under “set -n”
[kre, tg] Document Austin#1015 handling (not considered a violation)
[tg, fmunozs] Fix buffer overread for empty nameref targets
[tg] Fix warnings pointed out by latest Debian gcc-snapshot
[tg, Martijn Dekker] Document upcoming set +o changes
[Martijn Dekker] Expand testsuite for command/whence

Change-Id: Ife475b25acae5a85277757cfe9f14c6575eac0cd

Upgrade to mksh R52b.

2016-02-02T23:26:47+00:00

From the release notes:

R52b is a strongly recommended bugfix-only release:

[tg] Recognise ksh93 compiled scripts and LZIP compressed files as binary (i.e. to not run as mksh plaintext script)
[tg] Document that we will implement locale tracking later
[tg] Add EEXIST to failback strerror(3)
[jilles] Make set -C; :>foo race-free
[tg] Don’t use unset in portable build script
[tg] Plug warning on GNU/kFreeBSD, GNU/Hurd
[tg] Document read -a resets the integer base
[J�rg] Fix manpage: time is not a builtin but a reserved word
[J�rg, tg] Make exit (and return) eat -1
[tg] parse “$( (( … ) … ) … )” correctly (LP#1532621), Jan Palus
[tg] reduce memory footprint by free(3)ing more aggressively
[tg] fix buffer overrun (LP#1533394), bugreport by izabera
[tg] correctly handle nested ADELIM parsing (LP#1453827), Teckids
[tg] permit “read -A/-a arr[idx]” as long as only one element is read; fix corruption of array indicēs with this construct (LP#1533396), izabera
[tg] Sanitise OS-provided signal number in even more places
[tg] As requested by J�rg, be clear manpage advice is for mksh
[tg] Revert (as it was a regression) POSIX bugfix from R52/2005 related to accent gravis-style command substitution until POSIX decides either way
[tg] Handle export et al. after command (Austin#351)
[tg] Catch EPIPE in built-in cat and return as SIGPIPE (LP#1532621)
[tg] Fix errno in print/echo builtin; optimise that and unbksl
[tg] Update documentation, point out POSIX violation (Austin#1015)

R52 is a strongly recommended bugfix release:

[_0bitcount] Move moving external link from mksh(1) to the #ksh channel homepage linked therein
[tg] Make setenv “set -u”-safe and fix when invoked with no args
[tg] Make “typeset -f” output reentrant if name is a reserved word
[oksh] Zero-pad seconds in “time” output to align columns
[tg] Check signals and errorlevels from OS to be within bounds
[komh, tg] Quote and document ‘;’ as PATH separator in some places
[oksh, tg] Simplify code to call afree() even if arg is NULL
[tg] Fix tree-printing and reentrancy of multiple here documents
[tg] Work around LP#1030581 by permitting exactly one space after
[tg, oksh] Code quality work, cleanups
[tg] New code for here documents/strings with several bugfixes
[tg] Stop using issetugid(2) for ±p checks, wrong tool for the job
[tg] Reintroduce some -o posix changes lost in 2005, plus fixes
[tg] Make “source” into a built-in command
[tg] Drop “stop” alias, lksh(1) functionality to auto-unalias
[tg] Fix \u0000 ignored in $'…' and print
[tg] Improve portability of Build.sh
[Jilles Tjoelker] Improve portability of testsuite
[tg] Fix tilde expansion for some substitutions (izabera, Chet, Geoff)
[tg] Improve reparsing of ((…) |…) as ( (…) |…)
[Martijn Dekker] Fix test(1) not returning evaluation errors
[tg] Fix ${*:+x} constructs (carstenh)
[tg] Make (( … )) into a compound command (ormaaj)
[tg] Repair a few parameter substitution expansion mistakes

Change-Id: I3d875b5c648c60cc6203c964f11d8cbd42648d9c

Upgrade to mksh 51.

2015-07-17T18:44:21+00:00

Bug: http://b/22413333
Change-Id: Id86d5bf463af540b84d03a7b8fe092d23702f414

Upgrade to mksh 50f.

2015-04-21T20:39:18+00:00

Bug: http://b/20101805
Change-Id: Ic311851b31217517f6c201b5ec68a0668577eddf

Upgrade to mksh 50e.

2015-03-11T05:22:24+00:00

Change-Id: I341673d83c67f83761aa02c8372da6bbc419286f

Upgrade to mksh 50d.

2014-10-07T22:04:14+00:00

Bug: 17814343
Change-Id: Ie56f48e041850aaf05f44d3640667848ec92f0b1