ksh 93u+m/1.0.11 release checklist

[McDutchie]

Blocking bugs (must be fixed before release):

• mv fails to move directory hierarchies across file systems #871 – essential functionality breaks (there's a PR to review)
• "typeset: : invalid variable name" message when trying to assign array element to readonly variable #905 – we introduced a spurious "invalid variable name" error for valid code

Fix wanted before release, if at all possible:

• sleep 10 | read hangs interactive shell after ^Z #750
• Infinite loop when evaluating ((-2**63/-1)) #789
• 'typeset -p' segfaults after failing to redefine a type variable in a namespace #791
• Cannot build ksh 1.0.10 with MSYS2/MinGW #801
• setalarm: add support for timer_settime(3) #820
• Is there a flag to avoid redirecting compiler output? #850 (build system feature request)
• SHOPT_AUDIT documentation note #890 (documentation)
• Garbage left in binary variable after assigning nothing #892
• ksh93 redirection cannot create filenames if |wchar_t| uses UTF-16 #897 (if still broken; needs testing on Cygwin)
• error on close-parenthesis in positional parameter substitution: ksh -c 'echo "${1:+a)c}"' #907
• Escaping / character in substitution expansions #909 (documentation)
• inconsistencies between --man output and --nroff output (when piped to nroff -man) #910
• rendering of \a...\a emphasized text in getopts' --man output #914
• possible lack of posix compliance #913 (work out which of these need fixing)
• docs(parameter expansion): prefix/suffix removal uses pattern-lists #918
• Wrong year for "month day" input #925
• probable bug: already assigned associative array elements cannot be used in default assignment of another element of same array #966
• Intermittent failure causing print -u2 breakage #975
• Time zone conversion broken on musl libc #976
• sudo pipe linefeeds in output #989
• printf %'d segfault/bus error on bad input #1004
• trap EXIT still has situations it erroneously sees $? == 0 #1006

These have proven difficult to fix, but a fix would be a nice bonus:

• command substitution botches output of non-waited-for child processes #124
• wrong typeset -p output after unsetting multidimensional array elements #148
• Segfault with very large extended glob patterns #207
• Associative arrays of various types fail to be unset #345
• Variable with discipline function in subshell causes memory leak #404
• Memory leak(s) when modifying PATH in various contexts #405
• Function autoload apparently broken on DragonFly BSD #432
• nameref fails with nested associative arrays #594
• globstar fails to resolve symlink #629
• Race condition in job notification #655
• ksh remains in "noecho" mode forever #672
• Declaration command names break 2D indexed array assignments #792
• [pattern matching] "invalid" left-bracket should match itself, but does not #945
• [NetBSD] 'read' hangs on EOF without final linefeed when reading from FIFO #961
• History entries lost with multiple ksh sessions #997