Upgrade to mksh R53a.
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 $(<<<x) and $(<<EOF…) implementation
[tg] Lower minimum screen size accepted as “sane” from the OS to 4×2
[tg, Torsten Sillke] Simplify tilde-expanded parameters
[tg, Torsten Sillke] Fix default PS1 for substring matches
[tg] Apply defer-builtin-with-arguments logic to realpath builtin
[tg] Rework string pooling (own vs. compiler’s) (LP#1580348)
[tg] Feature: print -A, prints arguments as characters
[tg, izabera] Replace <<< and >>> 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
27 files changed
