add more overflow handling for printf builtin; start incorporating C23 stdckdint...

[thirdparty/bash.git] / CWRU / CWRU.chlog

\
                                 12/6/2020
                                 ---------

[bash-5.1 released]

                                   12/7
                                   ----
Makefile.in
        - bashline.o: add dependency on ${DEFDIR}/builtext.h. Report from
          Fazal Majid <fazal@majid.org>

                                   12/11
                                   -----
builtins/wait.def
        - wait_builtin: don't assign the variable given with -p if there are no
          jobs to wait for. Report and fix from OÄuz <oguzismailuysal@gmail.com>

arrayfunc.c
        - kvpair_assignment_p: return non-zero if argument L appears to be a
          key-value pair associative array compound assignment
        - expand_and_quote_kvpair_word: run a single word in a key-value pair
          associative array compound assignment through the appropriate
          expansions and single-quote the result

arrayfunc.h
        - kvpair_assignment_p, expand_and_quote_kvpair_word: extern declarations

subst.c
        - expand_oneword: detect whether VALUE appears to be a key-value
          pair compound assignment and call the appropriate function to expand
          each word in the resulting list. Fixes inconsistency reported by
          oguzismailuysal@gmail.com

                                   12/12
                                   -----
subst.c
        - command_substitute: don't reset pipeline_pgrp to shell_pgrp if we
          are already forked to run a command (SUBSHELL_FORK). Fixes SIGINT
          in command substitution in here-document in forked child issue
          reported by oguzismailuysal@gmail.com

                                   12/18
                                   -----
execute_cmd.c
        - execute_pipeline: execute the lastpipe code even if prev == 0. It
          can only be 0 here if stdin was closed when this function was
          executed
        - execute_pipeline: if prev == 0, set lstdin to a sentinel (-1) that
          means to close fd 0 after executing the command, and call close(prev)
          before restoring stdin. restore_stdin now understands -1, and closes
          fd 0. Fixes issue reported by Tomas Janousek <tomi@nomi.cz>

                                   12/21
                                   -----
doc/bashref.texi
        - PROMPT_COMMANDS: clean up a couple of remaining instances of this
          name. Report from Eli Schwartz <eschwartz@archlinux.org>

                                   12/26
                                   -----
subst.c
        - command_substitute: make sure that the child process always has
          pipeline_pgrp == shell_pgrp: if pipeline_pgrp is non-zero when we
          get to the child, meaning that we're part of an already-forked
          child that is, for instance, running redirections, we need to reset
          shell_pgrp to it to preserve the invariant. Fixes bug with terminal
          being set to the incorrect pgrp reported by oguzismailuysal@gmail.com

                                   12/29
                                   -----
configure.ac,builtins/shobj-conf,m4/threadlib.m4
        - midnightbsd: update auto-configuration to treat MidnightBSD like
          FreeBSD. From https://savannah.gnu.org/patch/?10006

                                   12/30
                                   -----
examples/loadables/stat.c
        - stattime: use strftime with a default format or the format supplied
          with the -F option to format the file time information
        - stat_builtin: now takes a -F fmt option for a strftime format string;
          change to function calling sequences to pass the format down to
          stattime

examples/loadables/Makefile.in
        - stat: now built and installed by default

                                   12/31
                                   -----
command.h
        - SUBSHELL_IGNTRAP: new flag value

jobs.c
        - make_child: set SUBSHELL_IGNTRAP in subshell_environment in the
          child process, meaning that we should not execute trap handlers for
          trapped signals

execute_cmd.c
        - execute_in_subshell, execute_simple_command, execute_disk_command:
          make sure to unset SUBSHELL_IGNTRAP after a child process restores
          the original signal dispositions
        - execute_simple_command: make sure to set SUBSHELL_IGNTRAP after
          make_child returns and we're setting subshell_environment directly

subst.c
        - command_substitute,process_substitute: unset SUBSHELL_IGNTRAP after
          the child process has reset the trapped signal dispositions

trap.c
        - trap_handler: if we get a signal for which we have set a trap, but
          SUBSHELL_IGNTRAP is set in subshell_environmnent, make sure we
          restore the original signal disposition and resend the signal to
          ourselves. Fixes issue reported by Nikolay Borisov <nborisov@suse.com>
          (or at least makes the race window much smaller)

sig.c
        - initialize_terminating_signal: set the original signal handler from
          the return value from sigaction; a minor optimization that saves a
          system call or two

                                 1/5/2021
                                 --------
builtins/declare.def
        - declare_internal: make some option combinations that don't make
          sense errors (e.g., -f and -a/-A/-i/-n)
        - declare_internal: if we build a new variable name by expanding the
          value of a nameref variable, make sure to chop the `+' in a `+='
          off before going on

                                    1/7
                                    ---
doc/{bash.1,bashref.texi}
        - bind: add an example to the synopsis making it clear that you can
          use any readline command line as a non-option argument, as it says
          in the text. From a report from Dan Jacobson <jidanni@jidanni.org>

                                   1/12
                                   ----
locale.c
        - local_shiftstates -> locale_shiftsates in the non-multibyte code
          branch. Reported by Henry Bent <henry.r.bent@gmail.com>

subst.c
        - expand_compound_assignment_word: make sure to call dispose_words on
          the WORD_LIST * returned from expand_oneword after turning it back
          into a string. Fixes memory leak reported by Alexander Mescheryakov
          <alexander.s.m@gmail.com>

                                   1/13
                                   ----
variables.c
        - bind_variable_internal: when performing an assignment to a subscripted
          array variable that was the value of a nameref (used in the original
          assignment), don't call make_variable_value on the value, since that
          messes up +=. Just call assign_array_element and let that take care
          of calling make_variable_value appropriately. Fixes bug reported by
          Oguz <oguzismailuysal@gmail.com>

                                   1/14
                                   ----
findcmd.c
        - search_for_command: if `checkhash' is set, don't add non-executable
          files to the command hash table, since we will just remove them
          later

lib/sh/winsize.c
        - get_new_window_size: set *rp and *cp even if READLINE is not defined

                                   1/15
                                   ----
lib/sh/winsize.c
        - get_new_window_size: call rl_set_window_size only if we can determine
          we're using readline: an interactive shell without no-line-editing,
          or if we've already initialized readline, presumably in a non-
          interactive shell 

support/Makefile.in
        - man2html: add LDFLAGS_FOR_BUILD to the recipe. Report from
          Jeffrey Walton <noloader@gmail.com>

                                   1/17
                                   ----
lib/readline/misc.c
        - rl_operate_and_get_next: fix old K&R function declaration. Report
          from Tom Tromey <tom@tromey.com>

lib/readline/readline.c
        - _rl_internal_char_cleanup: move code that cleans up the active region
          and deactivates the mark inside this function so callback mode
          applications get the intended functionality. Report and fix from
          sparrowhawk996@gmail.com

lib/readline/bind.c
        - rl_parse_and_bind: when using the arithmetic comparison operators on
          the version, make sure to invert the tests so that we stop parsing
          if the test fails. Report and fix from Tom Tromey <tom@tromey.com>

                                   1/19
                                   ----
Makefile.in
        - pipesize.h: add dependency on ${BUILTINS_LIBRARY} to avoid parallel
          makes trying to create it twice. Report and fix from
          Richard Purdie <richard.purdie@linuxfoundation.org>

                                   1/21
                                   ----
subst.c
        - param_expand: if a nameref expands to array[@] or array[*], make sure
          to call chk_atstar so the right variables are set to split the
          result. Report from Oguz <oguzismailuysal@gmail.com>

                                   1/22
                                   ----
builtins/declare.def
        - Rewrote to reduce complexity. Still needs some work.

lib/readline/*.h, lib/tilde/tilde.h
        - PARAMS: remove, rely on compilers understanding function prototypes

lib/readline/{undo.c,histlib.h}
         - _hs_replace_history_data: move extern declaration to histlib.h

lib/readline/readline.c
        - _rl_parse_colors: instead of an extern declaration for this, include
          "parse-colors.h" for it

lib/readline/{histfile.c,histlib.h}
        - _hs_append_history_line: move extern declaration to histlib.h

lib/readline/history.h
        - HS_HISTORY_VERSION: define to 0x0801 (current library version) if
          it's not already defined. We conditionally define it in case an
          application has (unwisely) chosen to use it, since the history
          library doesn't do anything with it yet

lib/readine/{rlprivate.h,{search,misc,readline}.c}
        - _rl_free_history_entry: add extern declaration to rlprivate.h, remove
          extern declaration from c source files. Use HS_HISTORY_VERSION as a
          sentinel that it's ok to use HIST_ENTRY in rlprivate.h

lib/readline/{rlprivate.h,{isearch,search,undo}.c}
        - _rl_saved_line_for_history: add extern declaration to rlprivate.h,
          remove extern declaration from c source files, using HS_HISTORY_VERSION
          in the same way

                                   1/24
                                   ----
lib/readline/signals.c
        - _rl_handle_signal: make sure that all sigprocmask calls are protected
          by HAVE_POSIX_SIGNALS. Report and fix from Tom Tromey <tom@tromey.com>

                                   1/26
                                   ----
lib/readline/callback.c
        - rl_callback_read_char: make sure rl_linefunc is non-NULL before
          calling through the pointer. The line function could have been
          removed by the application before readline processes any typeahead
          input. Bug reported by Matthias Klose <doko@debian.org>, pointer
          to root cause from Koichi Murase <myoga.murase@gmail.com>

lib/glob/glob.c
        - skipname,wskipname: put in some additional checks for `.' to ensure
          that we don't get false positives (or incomplete tests) that can 
          affect the results of extglob patterns. Reported by
          gregrwm <rhn-users@greatlakedata.com>

                                   1/27
                                   ----
lib/glob/glob.c
        - extglob_skipname,wextglob_skipname: fixed an off-by-one error (SE
          was being set to one character before the end of the pattern string,
          not the null character at the end of the pattern string like other
          callers of glob_patscan) that caused the last character of the last
          subpattern to be cut off when calling skipname
        - extglob_skipname,wextglob_skipname: some cleanups so the code is
          closer to identical for the single-byte and wide character versions

                                    2/1
                                    ---
execute_cmd.c
        - execute_simple_command: in posix mode, if we have a variable
          assignment error while assigning into the temporary environment (e.g.,
          assigning to a readonly variable), a non-interactive shell running a
          special builtin exits; a non-interactive shell running anything else
          jumps back to the top level. A shell compiled with -DSTRICT_POSIX
          exits unconditionally.
        - execute_simple_command: make sure posix mode sets $? to non-zero
          if a variable assignment error occurs preceding a non-special builtin

subst.c
        - do_assignment_statements: take the code from expand_word_list_internal
          that performs assignment statements, either standalone or preceding 
          simple command names, and factor it out into this function
        - expand_word_list_internal: call do_assignment_statements where
          appropriate

                                    2/2
                                    ---
lib/glob/glob.c
        - dequote_pathname: fix function definition for non-multibyte systems.
          Report and fix from Marc Aurèle La France <tsi@tuyoix.net>

Makefile.in,doc/Makefile.in
        - for certain targets, remove files before creating them to deal with
          symlinked build trees.
          Report and fix from Marc Aurèle La France <tsi@tuyoix.net>

examples/loadables/accept.c
        - include limits.h before typemax.h
          Report and fix from Marc Aurèle La France <tsi@tuyoix.net>

builtins/gen-helpfiles.c
        - if USING_BASH_MALLOC is defined, make sure to undefine malloc as well
          as free. Fixes bug reported by George R Goffe <grgoffe@yahoo.com>

builtins/Makefile.in
        - install-help: now depends on $(HELPFILES_TARGET) so we make sure the
          separate helpfiles are created before we try to install them if we
          don't go through the `all' makefile target

configure.ac
        - HELPDIR: now ${datadir}/bash/helpfiles

                                    2/3
                                    ---
parse.y
        - parse_string_to_word_list: before expanding a compound assignment
          statement body, make sure to save any alias that's currently being
          expanded. Restore the alias after the compound assignment is parsed.
          Reported back in 11/2020 by Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>

                                    2/4
                                    ---
lib/readline/histexpand.c
        - history_expand_internal: when calling the history_inhibit_expansion
          function, make sure to call it using the string as we've expanded it
          to that point (RESULT), adding the expansion and next characters
          temporarily, since we make expansion decisions based on what we've
          accumulated, not what we started with. This makes things like
          echo abc!$!$ work, where before the second `!' inhibited expansion
          because bash_history_inhibit_expansion mistakenly took it as the
          second character in a `$!' word expansion. Fixes bug reported back
          in 10/2020 by Paul Fox <paul.d.fox@gmail.com>

array.h
        - array_pop: instead of calling array_dispose_element from this macro,
          just call array_shift with the AS_DISPOSE flag

                                    2/5
                                    ---
bashhist.c
        - shell_comment: move condition to return 0 if the delimiter stack is
          not empty or the shell is parsing a here document into the function
          itself, don't have the callers check so the check is in one place.
          Fixes bug reported by Oguz <oguzismailuysal@gmail.com>

array.h,variables.c
        - ARRAY_ELEMENT_REPLACE: convenience define for modifying an array
          element's value

variables.c
        - pop_args: a couple of code simplifications

                                    2/7
                                    ---
lib/malloc/malloc.c
        - pagesz: at least MALLOC_PAGESIZE_MIN (4096) bytes
        - union mhead: now 16-byte aligned on all systems, 32-bit and 64-bit
          pointers
        - binsizes: since the smallest allocation overhead is now 16 bytes,
          redo the buckets so binsizes[0] == 32; adjust the thresholds for
          split/coalesce/prepopulate/mmap (NBUCKETS = 28; STARTBUCK = 0).
          Sizes stay pretty much the same; indices change
        - consistently use MALLOC_SIZE_T instead of long/unsigned int/int
        - use MAGIC8_NUMBYTES as the length of the mh_magic8 buffer, in case
          it changes later for alignment
        - internal_remap: new function, calls mremap to reallocate a chunk of
          memory allocated using mmap(); called from internal_realloc if the
          old size and new size are both bigger than the mmap threshold
        - internal_realloc: call internal_remap if the old size and new size
          are both above the threshold where we use mmap for allocation

                                   2/10
                                   ----
include/timer.h
        - new file, declaration for a timer struct to be used by a set of
          functions to implement timers using SIGALRM or select/pselect

lib/sh/timers.c
        - new file, set of functions to manipulate timer objects and timeouts
          using SIGALRM or select/pselect. Inspired by a patch from
          Koichi Murase <myoga.murase@gmail.com>. Not used yet

                                   2/11
                                   ----
builtins/read.def
        - read_builtin: if there is a timeout set, block SIGCHLD around calls
          to zread and its siblings, or calls to readline for `read -e', so
          SIGCHLD (and the consequent waitpid) doesn't interrupt the read.
          Fixes bug reported by Koichi Murase <myoga.murase@gmail.com>, but
          there may be a different fix coming

Makefile.in,builtins/Makefile.in
        - fix up dependencies, especially on builtins.h and builtext.h


                                   2/12
                                   ----
lib/readline/input.c
        - rl_read_key: if we set rl_done == 1, set RL_STATE_DONE as well
          Reported by Koichi Murase <myoga.murase@gmail.com>

lib/readline/isearch.c
        - _rl_search_getchar: only call _rl_read_mbstring if rl_read_key returns
          >= 0, avoid some work

lib/readline/vi_mode.c
        - _rl_vi_callback_change_char,_rl_vi_change_char: don't overwrite the
          last replacement string if _rl_vi_callback_getchar returns -1.
          It will likely make no difference, since the next read will return
          an error or EOF, but being careful
        - rl_vi_overstrike: if _rl_overwrite_char doesn't return 0, break out
          of the loop

lib/readline/text.c
        - _rl_overwrite_char: return 1 if _rl_read_mbstring returns < 0 so
          we don't try to insert garbage

bashline.c
        - posix_edit_macros: handle rl_read_key() returning <= 0

                                   2/15
                                   ----
parse.y
        - read_comsub: make sure to turn on the LEX_RESWDOK flag if we are in
          a case statement and read a `)', since we can get a valid `esac'.
          Fixes bug reported by Oguz <oguzismailuysal@gmail.com>
        - read_comsub: if we're in a case statement, recognize `}' as a
          reserved word and set the LEX_RESWDOK flag for the next word, since
          we can get an esac (or another reserved word) after it

                                   2/16
                                   ----
parse.y
        - reserved_word_acceptable: add ARITH_CMD and COND_END to the list of
          tokens that can precede a reserved word, so you can use reserved
          words after ((...)) and [[...]].
          Reported by Koichi Murase <myoga.murase@gmail.com>

                                   2/17
                                   ----
parse.y
        - parse_comsub: use new LEX_CASEWD flag to track when we are reading
          the WORD in `case WORD in' and turn on the LEX_RESWDOK flag when
          that word ends. This allows $(case x in esac), which no one uses.
        - parse_comsub: use LEX_PATLIST flag to track when we are reading a
          case pattern list so `|' doesn't turn on the LES_RESWDOK flag
        - parse_comsub: case_level: simple counter to count the number of esacs
          we need to see before we're no longer in a case statement; analog of
          esacs_needed_count from the lexer

                                   2/19
                                   ----
parse.y
        - CHECK_FOR_RESERVED_WORD: don't return ESAC if we read `esac' after a
          left paren in a case pattern list. From an austingroup-bugs discussion
          about https://www.austingroupbugs.net/view.php?id=1454
        - parse_comsub: if we read a `(' while looking for a case pattern list
          and LEX_CKESAC is set, we have a leading left paren in the pattern
          list and should turn off LEX_CKESAC so (esac) doesn't prematurely
          terminate the case command. From an austingroup-bugs discussion
          about https://www.austingroupbugs.net/view.php?id=1454

                                   2/26
                                   ----
builtins/history.def
        - history_builtin: when checking negative offsets to -d, which are
          supposed to count back from the end of the history list, check the
          range against 0 instead of history_base, because the calculation is
          done against history_length, which is independent of history_base.
          Report and fix from Christopher Gurnee <chris@gurneeconsulting.net>

                                   2/28
                                   ----
doc/bashref.texi
        - replaced a number of uses of @var with a mixture of @env and @dfn
          to better match up with the texinfo standards

doc/{bash.1,bashref.texi}
        - clarify some aspects of the coproc description, especially the
          use of NAME and when it's optional

                                    3/1
                                    ---
subst.c
        - read_comsub: fix off-by-one error in mbrtowc that causes a read one
          character past the end of buf. Report and fix from
          Platon Pronko <platon7pronko@gmail.com> in
          https://savannah.gnu.org/patch/?10035

                                    3/3
                                    ---
builtins/ulimit.def
        - ulimit_builtin: Posix compatibility: if the last command specified
          by an option does not have an option argument, but there is an
          operand remaining after all the options are parsed, treat the
          operand as an argument to that last command. From an austin-group
          discussion and a Geoff Clare suggestion back in November, 2020.
          Austin Group interpretation 1418

examples/shellmath
        - a package of shell functions to perform floating-point math entirely
          in bash. Contributed by Michael Wood <mawood20@gmail.com>. Available
          at https://github.com/clarity20/shellmath

                                    3/4
                                    ---
support/shobj-conf
        - darwin: take out the -arch-only option in SHOBJ_XLDFLAGS and
          SHOBJ_ARCHFLAGS; no longer needed

doc/{bash.1,bashref.texi}
        - coprocesses: suggested changes from rms@gnu.org; recommend the
          `coproc NAME { commands; }' form as the simplest and most flexible

                                    3/5
                                    ---
builtins/exec.def
        - exec_builtin: set last_command_exit_value before calling exit_shell
          so any exit trap gets the right value for $?. From Matthew Bauer
          <mjbauer95@gmail.com> via https://savannah.gnu.org/patch/?10039

                                    3/8
                                    ---
include/timer.h
        - SHTIMER_ALRMSET: new flag, indicates that there is an active alarm
          associated with this timer (falarm() was called)

lib/sh/timers.c
        - shtimer_set: set the SHTIMER_ALRMSET flag after calling falarm
        - shtimer_unset: don't call falarm(0,0) unless the SHTIMER_ALRMSET flag
          is set

                                    3/9
                                    ---
include/posixtime.h
        - added some BSD convenience defines if they are not present

parse.y,shell.h
        - {save,restore}_parser_state: save and restore shell_eof_token and
          pushed_string_list; change callers (e.g., xparse_dolparen) so they
          don't have to manage them

                                   3/10
                                   ----
builtins/common.h
        - extern declarations for moving to timers (sh_timer) for read builtin
          timeouts

quit.h
        - CHECK_ALRM: remove, no longer used

trap.c
        - check_signals: call check_read_timeout instead of CHECK_ALRM

bashline.c
        - bash_event_hook: use read_timeout instead of checking `sigalrm_seen';
          that no longer exists
        - bash_event_hook: accommodate readline timing out (not used yet)

lib/sh/zread.c
        - zread: call read_builtin_timeout() to check for a timeout before
          calling a blocking read()
          
builtins/read.def
        - sigalrm,reset_timeout,check_read_timeout,read_builtin_timeout: new
          and modified functions to use sh_timers for timeouts instead of
          SIGALRM. Based on work contributed by Koichi Murase
          <myoga.murase@gmail.com>
        - read_builtin: use sh_timers for read timeouts (-t N) instead of
          using SIGALRM
        - edit_line: simulate receiving SIGALRM if readline times out (not
          used yet)

                                   3/11
                                   ----
lib/readline/readline.c
        - rl_initialize: call _rl_timeout_init to set things up for any timeout 
          that was set with rl_set_timeout
        - readline_internal_charloop: if we longjmped because of a timeout,
          make sure to set rl_done/RL_STATE_DONE and return; we are
          abandoning this call to readline(). The readline timeout changes
          were based on work contributed by Koichi Murase
          <myoga.murase@gmail.com>

lib/readline/readline.h
        - extern declarations for new timeout functions and hook
        - rl_clear_timeout: new define

lib/readline/callback.c
        - rl_callback_read_char: if we longjmped because of a timeout,
          make sure to set rl_done/RL_STATE_DONE and return; we are
          abandoning this call to readline()

lib/readline/util.c
        - _rl_abort_internal: if we time out, don't ring the bell; let the
          caller handle it

lib/readline/input.c
        - extern declarations for public and readline-library-private functions
          and hooks to implement timeouts
        - rl_set_timeout,rl_timeout_remaining: new public functions
        - _rl_timeout_select: new function, uses select/pselect to implement
          read timeouts that take timeouts set with rl_set_timeout into account;
          calling hook function if a timeout occurs
        - rl_gather_tyi, _rl_input_available: use _rl_timeout_select, taking
          any existing timeout into consideration if it expires before the
          timeout passed as an argument
        - rl_getc: use _rl_timeout_select and handle any timeouts by calling
          _rl_timehout_handle
        - set_alarm,reset_alarm: new functions to implement timeouts using
          SIGALRM for systems that lack a working select/pselect
        - _rl_timeout_init: new function, sets things up for reading input
          with a specified timeout
        - _rl_timeout_handle: a timeout handler; calls any event hook and
          sets up to abort the current readline() call
        - _rl_timeout_handle_sigalrm: a timeout handler for systems using
          SIGALRM to implement timeouts

lib/readline/parens.c
        - rl_insert_close: use _rl_timeout_select to take timeouts into account

lib/readline/rlprivate.h
        - extern declarations for readline-library-private timeout functions

lib/readline/rltty.c
        - rl_deprep_terminal: don't print a newline after the bracketed paste
          disable sequence if we timed out

lib/readline/signals.c
        - _rl_handle_signal: if sig is SIGALRM, call _rl_timeout_handle_sigalrm()

lib/readline/doc/rltech.texi
        - rl_set_timeout,rl_timeout_remaining: document new public functions
        - RL_STATE_TIMEOUT: document new possible state value for rl_readline_state
        - rl_timeout_event_hook: document new hook function, called when
          readline times out

builtins/read.def
        - read_builtin: changes to use the readline timeout functions to
          implement timeouts with `read -e'; these use rl_set_timeout and
          sh_timer structs together

                                   3/12
                                   ----
subst.c
        - expand_string_dollar_quote: new function, expands $'...' and $"..."
          in a string for those code paths that don't expand it themselves

subst.h
        - expand_string_dollar_quote: extern declaration

parse.y
        - read_secondary_line: if $'...' or $"..." appears in the line, call
          expand_string_dollar_quote to expand them. This now returns new
          memory, need to change callers

make_cmd.c
        - make_here_document: account for read_secondary_line returning newly
          allocated memory, free `full_line' appropriately

bashline.c
        - shell_expand_line,history_and_alias_expand_line: expand $'...' and
          $"..." in the line by calling expand_string_dollar_quote, since
          that happens after history expansion and before alias expansion in
          normal processing 

                                   3/15
                                   ----
subst.c
        - expand_string_dollar_quote: fix out-of-order initialization

Makefile.in
        - {TAGS,tags}: add ETAGS/ETAGSFLAGS/CTAGS/CTAGS flags; make sure to
          cd to the source directory before running them to get source files
          that don't have absolute paths. Fix from Mike Jonkmans
          <bashbug@jonkmans.nl>

parse.y
        - xparse_dolparen: don't longjmp if FLAGS includes SX_NOLONGJMP. From
          a report by Xu Lu <oliver_lew@outlook.com>

                                   3/16
                                   ----
subst.c
        - process_substitute: set startup_state and parse_and_execute_level
          to see if we can avoid a fork()

bashline.c
        - bash_spell_correct_word: bindable command (spell-correct-word) to
          perform spelling correction on the current `shellword', using the
          same code as the `cdspell' option and directory spelling correction
          during completion. Feature suggested by in 10/2020 by
          Karl Kleinpaste <karl@kleinpaste.org>
        - bash_spell_correct_word: bound to "C-x s" by default in emacs mode

lib/readline/display.c
        - rl_redisplay: fix redisplay problem that occurs when switching from
          the rl-digit-argument prompt "(arg: N)" back to the regular prompt,
          and the regular prompt contains invisible characters

doc/bash.1,lib/readline/doc/rluser.texi
        - spell-correct-word: document new function and its default binding

                                   3/17
                                   ----
doc/{bash.1,bashref.texi}
        - cd: slight changes to specify that it sets PWD and OLDPWD
        - {pushd,popd}: make it clear that these builtins use cd to change
          the current working directory; change wording to simplify the
          description and clarify the exit status

                                   3/18
                                   ----
execute_cmd.c
        - execute_disk_command: after performing redirections, call
          unlink_all_fifos() to remove the FIFOs created as part of
          expanding redirections. They should have been opened by then, and
          we're going to call shell_execve right away anyway, so we won't be
          around to remove the FIFOs. From a report from
          Michael Felt <aixtools@gmail.com>

                                   3/22
                                   ----
parse.y
        - alias_expand_token: slight tweak to check for alias expansion: perform
          expansion unconditionally if PST_ALEXPNEXT is set, and disable it
          in case statement pattern lists if the previous token indicates a
          command name is acceptable.
          From a report by Oguz <oguzismailuysal@gmail.com>

config-bot.h
        - HAVE_MKDTEMP: fix typo

                                   3/25
                                   ----
lib/readline/terminal.c
        - look in terminfo for key sequences for page up (kP) and page down
          (kN) and bind them to history-search-{backward,forward},
          respectively. From a patch from Xose Vazquez Perez
          <xose.vazquez@gmail.com>

                                   3/30
                                   ----
doc/bashref.texi
        - expand the node describing $"..." string translation with additional
          details and examples

                                   3/31
                                   ----
misc.c
        - rl_fetch_history: moved here from vi_mode.c
        - rl_fetch_history: negative arguments count back from the end of
          the history, instead of taking you to the beginning of the history
          list
        - rl_fetch_history: in vi mode, an out-of-range argument rings the
          bell and doesn't change the line

vi_mode.c
        - rl_vi_fetch_history: call rl_fetch_history

readline.h
        - rl_fetch_history: new extern declaration

doc/bash.1,lib/readline/doc/{readline.3,rluser.texi}
        - rl_fetch_history: add description

builtins/setattr.def
        - show_var_attributes: if a variable's value indicates that it should
          be ANSI-C quoted, use ansic_quote instead of sh_double_quote to
          format the value string. From proposal by Greg Wooledge
          <greg@wooledge.org>

                                    4/5
                                    ---
arrayfunc.c
        - unbind_array_element: if FLAGS includes VA_ONEWORD, don't use
          skipsubscript to parse the subscript, just assume the entire SUB is
          the subcript and that it contains the closing `]', so we just want
          everything in SUB except the last character.

parse.y:
        - select_command: use compound_list instead of list, like for_command.
          Report by Greywolf <greywolf@starwolf.com>
        - list: move this into compound_list (replacing the instance of `list'
          in the compound_list production), remove from the grammar

                                    4/6
                                    ---
arrayfunc.c
        - unbind_array_element: use VA_NOEXPAND instead of literal 1

                                    4/7
                                    ---
lib/readline/funmap.c
        - default_funmap: add missing `vi-undo' to the list of vi-mode bindable
          functions. Reported by Xirui Zhao <quinean@icloud.com>

                                    4/8
                                    ---

config-top.h
        - DEFAULT_LOADABLE_BUILTINS_PATH: default value for BASH_LOADABLES_PATH

doc/{bash.1,bashref.texi}
        - enable: note that it uses $BASH_LOADABLES_PATH, and that the default
          is system-dependent

variables.c
        - initialize_shell_variables: initialize BASH_LOADABLES_PATH to the
          default given in DEFAULT_LOADABLE_BUILTINS_PATH

                                   4/12
                                   ----
doc/{bash.1,bashref.texi}
        - add link to git master tar file as a place to get the current version

                                   4/14
                                   ----
bashline.c
        - attempt_shell_completion: use -1 as a sentinel value for
          in_command_position indicating that we cannot be in a command position
          (e.g., because we're the target of a redirection) and should not
          check for a programmable command completion or tell the programmable
          completion code to use command completion. Report and fix from
          Marc Aurèle La France <tsi@tuyoix.net>

                                   4/16
                                   ----
builtins/bind.def
        - bind_builtin: reverse sense of strvec_search return value when
          deciding whether or not to remove a unix-command binding from the
          cmd keymap. Bug report by Dale Sedivec <dale@codefu.org>

lib/readline/doc/rltech.texi
        - RL_PROMPT_{START,END}_IGNORE: document current values of \001 and
          \002. Report from Mingye Wang <arthur200126@gmail.com>

                                   4/19
                                   ----
arrayfunc.c
        - assign_assoc_from_kvlist: fix memory leak reported by konsolebox
          <konsolebox@gmail.com>

                                   4/20
                                   ----
command.h,subst.c
        - W_ITILDE: remove, replace with a variable since it's only used inside
          a single call to expand_word_internal

                                   4/21
                                   ----
{subst.c,make_cmd.c,parse.y}
        - W_DQUOTE: no longer used, use W_NOPROCSUB and W_NOTILDE directly
          (for arithmetic commands and words in arithmetic for commands)

                                   4/24
                                   ----
bashline.c
        - executable_completion: since this function gets an unquoted filename
          from rl_filename_completion_function, we need to quote special
          characters before passing it to bash_directory_completion_hook.
          Report from Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>

                                   4/26
                                   ----
lib/readline/search.c
        - _rl_nsearch_abort: move function calls around so _rl_restore_prompt
          happens before rl_clear_message, like when aborting an incremental
          search. Suggested by sparrowhawk996@gmail.com

subst.h
        - ASS_ALLOWALLSUB: new assignment flag value, means to allow @ and * as
          valid array subscripts when assigning to existing associative arrays

arrayfunc.c
        - assign_array_element: allow assignment of key `@' to an existing
          associative array if the caller passes ASS_ALLOWALLSUB
        - assign_compound_array_list: allow ( [@]=value ) to an existing
          associative array

builtins/declare.def
        - declare_internal: allow assignment of key `@' to an existing
          associative array by passing ASS_ALLOWALLSUB to assign_array_element
          as part of local_aflags. This affects declare, local, and typeset

subst.c
        - do_assignment_internal: allow a[@]=value to an existing associative
          array by passing ASS_ALLOWALLSUB to assign_array_element

                                   4/27
                                   ----
builtins/common.[ch]
        - builtin_bind_var_to_int: wrapper for bind_var_to_int to be used by
          builtin commands; placeholder for future work

builtins/wait.def
        - builtin_bind_var_to_int: use instead of bind_var_to_int

builtins/common.c
        - builtin_bind_variable: allow assignment of key `@' to an existing
          associative array by passing ASS_ALLOWALLSUB to assign_array_element.
          This affects printf and read

builtins/variables.[ch]
        - bind_var_to_int: add third `flags' argument to pass to bind_variable
          instead of always passing 0

redir.c,builtins/common.c,builtins/printf.def
        - bind_var_to_int: change callers, add third flags argument

builtins/common.c
        - builtin_bind_var_to_int: pass ASS_ALLOWALLSUB to bind_var_to_int so
          builtins like wait can assign to assoc[@] and assoc[*]

                                   4/28
                                   ----
bashline.c
        - command_word_completion_function: make sure to initialize
          old_glob_ignore_case before trying to restore from it
        - command_word_completion_function: if we are completing a glob
          pattern, make sure to set rl_filename_completion_desired, so we get
          quoting and appending -- we are completing a filename, after all.
          From a report from Manuel Boni <ziosombrero@gmail.com>

lib/readline/bind.c
        - enable-active-region: separate control of the active region and
          bracketed paste. Still set to the same default value as bracketed
          paste, and enabling bracketed paste enables the active region.
          Now you can enable bracketed paste and then turn off the active
          region.

doc/bash.1,lib/readline/doc/{readline.3,rltech.texi}
        - enable-active-region: document new bindable readline variable and
          its effects

                                   4/30
                                   ----
command.h
        - W_ARRAYREF: new flag, meaning the word is a valid array reference
          with subscript, replaces W_DOLLARSTAR, which was unused

subst.c 
        - expand_subscript_string,expand_array_subscript: new functions to
          parse and expand-and-quote array subscripts. For future use

                                    5/3
                                    ---
builtins/mapfile.def
        - mapfile: if the delimiter is a newline, set unbuffered_read = 1
          for any file descriptor that isn't seekable and lseek sets errno
          to ESPIPE (pipes, FIFOs, maybe terminal devices). If it's not a
          newline, only allow buffered reads if the file descriptor is a
          regular file. Report from Koichi Murase <myoga.murase@gmail.com>

builtins/read.def
        - read_builtin: only set unbuffered_read = 1 if the input is coming
          from a pipe (which we can't seek on) or the input is a terminal and
          we want to read a specified number of characters or we're using a
          non-standard delimiter

                                    5/4
                                    ---

builtins/mapfile.def
        - mapfile: call zsyncfd before calling the callback. Suggested by
          Koichi Murase <myoga.murase@gmail.com>; we'll see how it goes

                                    5/5
                                    ---
subst.h
        - expand_subscript_string: extern declaration

{arrayfunc,subst}.c
        - expand_subscript_string: replace expand_assignment_string_to_string
          with calls to this when expanding array subscripts

subst.c
        - cond_expand_word: call expand_word_internal with Q_ARITH if `special'
          says we should quote for an arithmetic expression context
        - expand_word_internal: call expand_array_subscript when we see `[' in
          arithmetic or array subscript contexts, make conditional on the
          compatibility level later
        - expand_word_internal: make sure W_ARRAYREF makes it through this
          function and into the returned word

                                    5/6
                                    ---

arrayfunc.c
        - array_expand_index: call evalexp with a flag of 0 since we call
          expand_arith_string with Q_ARITH and we want evalexp to remove
          the quotes

execute_cmd.c
        - eval_arith_for_expr,execute_arith_command: now that Q_ARITH has an
          effect on array subscripts (it quotes the special expansion
          characters), call evalexp with 0 as the flags arg so quote removal
          is performed on this quoted argument. Make this conditional on the
          shell compatibility level later
        - execute_cond_command: make sure to expand the argument to -v by
          calling cond_expand_node with Q_ARITH, and correspondingly turn off
          assoc_expand_once when calling unary_test with that argument, since
          we want it to be expanded again to remove the quotes
        - execute_cond_command: expand the arguments to the arithmetic operators
          with Q_ARITH and pass TEST_ARITHEXP to binary_test to ensure that
          it lets evalexp expand the arguments to remove the quoting

test.c
        - arithcomp: if TEST_ARITHEXP is in FLAGS, call evalexp with a flag
          if 0 to force evalexp to expand the arguments to remove the quoting

subst.c
        - param_expand: since we call expand_arith_string with Q_ARITH, we need
          to call evalexp with 0 instead of EXP_EXPANDED for $((...)) expansion
        - expand_word_internal: if we recursively call expand_word_internal to
          expand the contents of a double-quoted string, make sure we pass
          through Q_ARITH if it appears in QUOTED
        - verify_substring_values: call expand_arith_string with Q_ARITH and
          correspondingly call evalexp with 0 instead of EXP_EXPANDED

execute_cmd.c
        - execute_cond_node: if -v is the operator, and the operand is a valid
          array reference, pass TEST_ARRAYEXP flag to unary_test

                                    5/7
                                    ---
builtins/common.[ch]
        - set_expand_once: set array_expand_once to the value passed as the
          first argument, returning the original value

builtins.h
        - ARRAYREF_BUILTIN: new flag for shell builtins, means that the builtin
          can take array references, with subscripts, as arguments

builtins/mkbuiltins.c
        - set ARRAYREF_BUILTIN flag on builtins given in the arrayvar_builtins
          array

execute_cmd.c
        - execute_cond_node: use set_expand_once to set array_expand_once to 0
          before calling unary_test with -v (see change from 5/6)

arrayfunc.c
        - unbind_array_element: allow the caller to choose whether or not a
          subscript of `*' or `@' unsets the entire array by passing
          VA_ALLOWALL in FLAGS. Right now, since the unset builtin doesn't
          pass VA_ALLOWALL, those subscripts unset individual elements for
          associative arrays. We preserve the old behavior of unsetting
          indexed arrays for the time being with new indexed-array-specific
          code

                                    5/9
                                    ---

builtins/shopt.def
        - expand_once_flag: "assoc_expand_once" option now sets this flag,
          calls set_assoc_expand on change
        - set_assoc_expand: sets assoc_expand_once to mirror expand_once_flag;
          placeholder for future changes

builtins/common.h
        - expand_once_flag: extern declaration

                                   5/10
                                   ----
doc/{bash.1,bashref.texi}
        - note that case patterns undergo quote removal. Reported by
          AlvinSeville7cf <alvinseville7cf@gmail.com>

                                   5/11
                                   ----

builtins/bashgetopt.c
        - list_optflags: flags associated with the word corresponding to
          list_optarg, assuming list_optarg is a separate argument

builtins/bashgetopt.h
        - list_optflags: extern declaration

builtins/set.def
        - unset_builtin: set VFLAGS each time through the loop, since we take
          whether or not the word has W_ARRAYREF set into account
        - unset_builtin: don't pass VA_ALLOWALL to unbind_array_element for
          now

test.c
        - unary_test: in the -v case, use assoc_expand_once in the first call
          to valid_array_reference ()

builtins/printf.def
        - printf_builtin: only set VA_ONEWORD if the option argument to -v has
          W_ARRAYREF set (look at list_optflags)

                                   5/12
                                   ----

subst.c
        - expand_array_subscript: don't quote @ or * in the expanded subscript
          at all, even when they are the only character in the subscript. See
          how this works out -- it might uncover places where we need to allow
          `*' and `@' as subscripts where they are not allowed now

expr.c
        - expr_bind_variable: pass ASS_ALLOWALLSUB to bind_int_variable so we
          can allow (( A[@]=value )) when A is an existing associative array

arrayfunc.h
        - AV_ATSTARKEYS: new flag value, means to accept a[@] and a[*] but
          treat them as keys/expressions and not special values

arrayfunc.c
        - array_value_internal: check AV_ATSTARKEYS and don't treat them as
          ALL_ELEMENT_SUB values; they fall through to use as keys/indices

test.c
        - unary_test: if -v is passed an array reference, add AV_ATSTARKEYS to
          the flags passed to array_value so we treat @ and * as keys for an
          existing associative array

                                   5/13
                                   ----

subst.c
        - expand_cond_word: if SPECIAL == 3 (arithmetic expression), dequote the
          resulting WORD_LIST * as if special == 0, because we don't want to
          quote the list for pattern matching. Report from
          Adjudicator Darren <adjudicatordarren@protonmail.com>

                                   5/14
                                   ----
subst.c
        - expand_array_subscript: add double quote (") to the list of characters
          that are backslash-quoted in subscripts after word expansion.
          skipsubscript treats them specially, so you have to quote them to
          do things like `key='"' ; array[$key]=1 ; [[ -v array[$key] ]]'

                                   5/16
                                   ----

builtins/wait.def
        - wait_builtin: if we longjmp to wait_intr_buf, call unset_waitlist if
          we have called set_waitlist (wflags & JWAIT_WAITING). Fixes bug with
          wait -n interrupted by a trapped signal (not SIGINT) reported by
          Jonas Alfredsson <jonas.alfredsson@protonmail.com>

jobs.c
        - wait_sigint_cleanup: restore the old sigint handler before we longjmp
          out by calling restore_sigint_handler()

                                   5/17
                                   ----
builtins/read.def
        - bind_read_variable: now takes an additional argument, flags to pass
          to builtin_bind_variable; change callers
        - SET_VFLAGS: set vflags and bindflags
        - read_builtin: call SET_VFLAGS to set vflags and bindflags from each
          word before calling valid_array_reference and bind_read_variable

builtins/common.c
        - builtin_bind_variable: set vflags (for valid_array_reference) and
          bindflags (for bind_variable/assign_array_element) separately for
          clarity

arrayfunc.c
        - assign_array_element: sanity check: make sure that the subscript
          returned by array_variable_name consumes the entire NAME, otherwise
          flag it as a subscript error. This keeps things like
          `KEY=' ]'; read assoc[$KEY] <<< hello' from assigning to incomplete
          subscripts

builtins/printf.def
        - printf_builtin: if LIST_OPTFLAGS includes W_ARRAYREF, set VA_NOEXPAND
          in VFLAGS

                                   5/17
                                   ----

lib/readline/complete.c
        - compute_lcd_of_matches: move a couple of strlen calls out of a loop
          in calls to mbrtowc; performance improvement only. Report and fix
          from sparrowhawk996@gmail.com

lib/readline/bind.c
        - rl_trim_arg_from_keyseq: take a key sequence and its length and
          return the index into the key sequence following any initial numeric
          argument. Return -1 if there is no numeric argument (the caller is
          expected to make sure) or if the key sequence consists *only* of
          the numeric argument. The caller should use the remainder of the
          key sequence to look up the desired key binding.

lib/readline/readline.h
        - rl_trim_arg_from_keyseq: extern declaration

bashline.c
        - bash_execute_unix_command: if the argument count is > 1 or we have
          an explicit argument, call rl_trim_arg_from_keyseq to get past the
          numeric argument and deal with the rest of the key sequence. We still
          need a way to pass it to the invoked program or function. From
          a report from Jesper Nygards <jesper.nygards@gmail.com>

                                   5/18
                                   ----

bashline.c
        - bash_execute_unix_command: if the user supplied a numeric argument
          when invoking bash_execute_unix_command, pass it to the command in
          the READLINE_ARGUMENT variable

lib/readline/readline.[ch]
        - _rl_del_executing_keyseq: convenience function to `delete' the last
          character added to the executing key sequence. Intended to be used
          before calling rl_execute_next or similar functions that push input
          back to be re-read

doc/{bash.1,bashref.texi}
        - READLINE_ARGUMENT: documented new variable available for commands
          defined using `bind -x' keybindings

lib/readline/doc/rltech.texi
        - rl_trim_arg_from_keyseq: documented new function

                                   5/19
                                   ----

builtins/evalstring.c
        - should_suppress_fork: suppress the fork if we're in a process
          substitution subshell, in addition to being a simple command
          without redirections. From a report back in 10/2020 from
          Hyunho Cho <mug896@gmail.com>

bashline.c
        - command_word_completion_function: if we're trying to complete an
          absolute program (one containing a slash), don't run strcmp or
          strcasecmp on the return value from rl_filename_completion_function,
          since that duplicates work the filename completion function already
          does. From a report back in 1/2021 by awa54@cdak.net

                                   5/22
                                   ----
parse.y
        - CHECK_FOR_RESERVED_WORD: if we are returning an ESAC and unsetting
          PST_CASESTMT, decrement esacs_needed_count

parse.y,shell.h
        - sh_parser_state_t: save and restore esacs_needed_count and
          expecting_in_token in the shell parser state struct and
          save_parser_state/restore_parser_state

print_cmd.c
        - print_simple_command: don't bother to call command_print_word_list
          with an empty list
        - print_simple_command: don't print a space before a redirection list
          if there weren't any command words to print

                                   5/24
                                   ----

lib/sh/input_avail.c
        - nchars_avail: make sure SET and OSET are declared on systems with
          select(2). Reported by Larkin Nickle <me@larbob.org>

parse.y
        - cond_term: if we read a `!' toggle CMD_INVERT_RETURN instead of
          setting it unconditionally. Report and patch from
          Vincent Menegaux <vincent.menegaux@gmail.com> via
          https://savannah.gnu.org/patch/?10070

                                   5/25
                                   ----
doc/{bash.1,bashref.texi}
        - test: add the ( $2 $3 ) case to the description of the four-argument
          behavior. Inspired by a discussion with Christoph Anton Mitterer
          <calestyo@scientia.net>

                                   5/27
                                   ----
doc/bashref.texi
        - replace most of the GNU parallel section with a reference to the
          tutorial on gnu.org

lib/glob/glob.h
        - GX_NEGATE: new flag; indicates whether the pattern is being negated
          as part of an extglob pattern. Not used yet

lib/glob/glob.c
        - extglob_skipname,wextglob_skipname: pass GX_NEGATE to the skipname
          functions if the pattern is being negated. Not checked yet

                                   5/28
                                   ----
doc/{bash.1,bashref.texi}
        - dotglob: add text to clarify that `.' and `..' have to be matched by
          a pattern beginning with `.' or -- and this is the sketchy part --
          that a pattern beginning with `.' has to be one of the patterns in
          an extended glob expression

lib/glob/glob.c
        - skipname,wskipname: perform the special checks for `.' only if the
          pattern is not being negated

                                    6/3
                                    ---
parse.y,shell.h
        - eol_ungetc_lookahead: save and restore as part of the parser state
          included in {save,restore}_parser_state

                                    6/7
                                    ---
lib/readline/display.c
        - puts_face: make sure to cast each member of STR to unsigned char, so
          it's not misinterpreted as EOF, which putc_face does not display.
          Report and fix from Volodymyr Prodan <vovcat@gmail.com> in
          https://savannah.gnu.org/patch/?10076

examples/shobj-conf
        - aix*gcc: change SHOBJ_LD to ${CC}, prefix the SHOBJ_LDFLAGS flags
          with -Wl, so gcc will pass them to the linker. Report from
          lehel@maxer.hu in https://savannah.gnu.org/support/?110505

                                   6/11
                                   ----
doc/{bash.1,bashref.texi}
        - cd: additional arguments are not ignored; they raise an error.
          Report from Douglas McIlroy <douglas.mcilroy@dartmouth.edu>

lib/glob/strmatch.h
        - FNM_DOTDOT: enable special handling for `.' and `..': if FNM_PERIOD
          is not set, `.' and `..' at the start of a string or as a pathname
          component need to be matched by a `.' in the pattern and cannot be
          matched by `?', `*', or a bracket expression
        
lib/glob/glob.c
        - glob_vector: pass FNM_DOTDOT to strmatch() if noglob_dot_filenames
          is not set to enable special handling of `.' and `..'. Prompted by a
          discussion with Nora Platiel <nplatiel@gmx.us>
        - skipname,wskipname: remove special checks for `.' and (disabled)
          checks for `..'

lib/glob/sm_loop.c
        - GMATCH: implement special handling for FNM_DOTDOT and `.' and `..':
          make sure they can't be matched by any special glob characters at
          the start of the string or as a pathname component (if FNM_PATHNAME
          is set). This also means that !(pattern) won't return `.' or `..'
          if dotglob is set
        - GMATCH,EXTMATCH: don't pass FNM_DOTDOT down to recursive calls, like
          FNM_PERIOD, once we process the first character in the string or
          pathname component

lib/glob/smatch.c
        - ISDIRSEP,PATHSEP,SDOT_OR_DOTDOT,PDOT_OR_DOTDOT: provide definitions
          for single-byte or wide character strings for sm_loop.c to use

                                   6/16
                                   ----

doc/{bash.1,bashref.texi},lib/readline/doc/{rluser,rltech}.texi
        - slight wording changes to rewrite gender-specific language. From a
          report by Vipul Kumar <kumar+bug-bash@onenetbeyond.org>, suggested
          language from G. Branden Robinson <g.branden.robinson@gmail.com>,
          Lawrence Velázquez <vq@larryv.me>,
          and Andrew Church <achurch+bash@achurch.org>

builtins/fc.def
        - fc_builtin: make sure an entry in the history list is non-null
          before trying to write it to stdout or the temporary file. From a
          report from Sibo Dong <sibo.dong@outlook.com>

builtins/common.[ch]
        - builtin_arrayref_flags: given a WORD_DESC * (which includes flags)
          and a base set of flags, return a set of flags to pass to
          valid_array_reference and similar functions

builtins/set.def
        - unset_builtin: call builtin_arrayref_flags to set vflags

                                   6/19
                                   ----

parse.y
        - parse_comsub: rewrite to recursively call the parser (yyparse()) and
          return a string constructed from the resulting parse tree. Probably
          will only work with bison. Error reporting is more accurate about
          line numbers and invalid tokens, and command substitution errors 
          are caught earlier, before expansion
        - DOLPAREN: new token, never created by yylex; only ever set by
          parse_comsub and xparse_dolparen to indicate we're recursively
          calling the parser for a command substitution
        - comsub: new grammar production that's triggered by DOLPAREN and
          parses a command substitution, returning a <command>. It's one of
          the possible end states for the top-level parser
        - grammar: only call rewind_input_string if the shell's input is
          coming from a string
        - shell_ungets: push a string back onto the shell input; only used by
          make_here_document for backwards compatibility -- allowing a here-
          document to be terminated by a token at the end of a command
          substitution
        - yylex: don't need any more special handling when returning
          shell_eof_token, but we keep the clause for future work
        - read_token_word: don't handle backslashes (leave them in the input
          stream) if we are reading a command substitution (PST_NOEXPAND)
        - reserved_word_acceptable: allow reserved words after DOLPAREN
        - report_syntax_error: better error handling if we hit EOF while
          looking for the ending right paren in a command substitution
        - parse_string_to_word_list,parse_compound_assignment: make sure to
          turn off parse_comsub sentinel temporarily

make_cmd.c
        - make_here_document: backwards compatibility: if we end a here
          document on the same line as the end of a command substitution,
          allow the token to terminate the here document (without requiring
          a newline) and push the remainder of the line back for the parser
          to consume and terminate the command substitution

builtins/evalstring.c
        - parse_string: if we read shell_eof_token and use it to terminate a
          command, rewind the input string here before returning, instead of
          guessing where to rewind it in the caller

                                   6/22
                                   ----

redir.c
        - do_redirection_internal: if VARASSIGN_REDIR_AUTOCLOSE is non-zero,
          add a redirect to automatically close {var}<fn and other styles of
          varassign redirection. It's zero by default

builtins/shopt.def
        - varredir_close: new shell option, mirrors the value of
          varassign_redir_autoclose. Suggested multiple times by multiple
          people

doc/{bash.1,bashref.texi}
        - varredir_close: document new shell option (the name is tentative)

                                   6/24
                                   ----

parse.y
        - yylex: if read_token returns a value < 0, return YYerror to the
          parser
        - parse_comsub: if the current_token is not shell_eof_token when
          yyparse returns, return an error to read_token_word instead of
          trying to keep parsing. Fixes interactive-only (?) bug reported by
          Koichi Murase <myoga.murase@gmail.com>

parser.h
        - PST_NOERROR: don't print error messages in yyerror(), just reset
          the parser and return

parse.y
        - yyerror: if parser_state & PST_NOERROR, don't print an error message
        - xparse_dolparen: if the flags includes SX_COMPLETE, add PST_NOERROR
          to parser_state, to inhibit error messages. Fixes bug with adding
          lines with incomplete command substitutions to the history list
          reported by Koichi Murase <myoga.murase@gmail.com>

subst.c
        - skip_matched_pair: make sure to pass the SX_COMPLETE flag to
          extract_delimited_string

                                   6/28
                                   ----

lib/readline/bind.c
        - rl_trim_arg_from_keyseq: handle rl_vi_arg_digit if VI_MODE is
          defined. Report and fix from Koichi Murase <myoga.murase@gmail.com>
        - rl_trim_arg_from_keyseq: rework to handle case where the digit
          argument is given as a discrete sequence of multiple rl_digit_argument
          commands (e.g, "M-1 M-2" instead of "M-1 2"). Report and fix from
          Koichi Murase <myoga.murase@gmail.com>

subst.c
        - pat_subst: avoid calling RESIZE_MALLOCED_BUFFER with STRLEN(s) as an
          argument, since it ends up going into a loop. Report and fix from
          Koichi Murase <myoga.murase@gmail.com>

lib/sh/casemod.c
        - cval: take the string length as an argument, to avoid having to call
          strlen every time (in HANDLE_MULTIBYTE mode). The caller already has
          this info. Report and fix from Koichi Murase <myoga.murase@gmail.com>

builtins/complete.def
        - print_cmd_name: single-quote the command name if it contains any
          shell metacharacters
        - print_one_completion: call print_arg with a second arg of 1 if the
          function name contains shell metacharacters. Report and fix from
          Koichi Murase <myoga.murase@gmail.com>

                                   6/30
                                   ----

configure.ac
        - substitute BASE_CFLAGS_FOR_BUILD and STYLE_CFLAGS into Makefile
          targets
        - take STYLE_CFLAGS out of the CFLAGS_FOR_BUILD variable that gets
          substituted
        - remove STYLE_CFLAGS from CFLAGS
        - use `:+' expansion to set variables based on whether $GCC is set
          or null, since configure can do GCC=

support/Makefile.in
        - man2html: remove CCFLAGS_FOR_BUILD from the recipe, leaving only
          LDFLAGS_FOR_BUILD. Report from Jay K <jayk123@hotmail.com>
        - gen-helpfiles: remove CCFLAGS_FOR_BUILD from the recipe, leaving
          only LDFLAGS_FOR_BUILD
        - man2html: use $(STYLE_CFLAGS) in BASE_CCFLAGS variable for C file
          compilation options

{,builtins}/Makefile.in, lib/{sh,readline,malloc,glob}/Makefile.in
        - use STYLE_CFLAGS so specifying CFLAGS=-g to make doesn't clutter the
          output with warnings about parens and format strings

                                    7/9
                                    ---
lib/readline/search.c
        - make_history_line_current: call _rl_free_saved_history_line to clean
          up _rl_saved_line_from_history and get all the code that frees it
          into one place

lib/readline/misc.c
        - _rl_free_saved_history_line: if rl_undo_list points to the data
          member of _rl_saved_line_from_history, set it to NULL to avoid having
          it point to freed memory, since the next thing we do now is to free
          the undo list the data member points to
        - _rl_start_using_history: call _rl_free_saved_history_line instead of
          calling _rl_free_history_entry directly. Fixes memory leak reported
          by Trung Dam <trungdam@yahoo.com>

                                   7/12
                                   ----
lib/readline/search.c
        - make_history_line_current: free rl_undo_list before replacing the
          current line with the line from history, since it is a private
          undo list from reading the search string

lib/readline/rlmbutil.h
        - Since wchar_t/mbrtowc/wcrtomb are limited to 16 bits on Windows
          with MSVC, start abstracting the differences using WCHAR_T/
          MBRTOWC/WCRTOMB

                                   7/13
                                   ----

lib/readline/{complete,display,input,text,util,vi_mode}.c
        - use WCHAR_T/MBRTOWC/WCRTOMB. Part of a set of Windows MSVC fixes
          from sparrowhawk996@gmail.com

builtins/{enable,hash,help}.def
        - enable_builtin: use sh_chkwrite after output to check for write errors

                                   7/16
                                   ----
arrayfunc.c
        - quote_compound_array_word: free SUB and VALUE after assigning from
          sh_single_quote(). From a coverity report from
          Siteshwar Vashisht <svashisht@redhat.com>

bashhist.c
        - bash_remove_history_range: free DISCARD_LIST after freeing its
          elements

bashline.c
        - bash_directory_expansion: add code to free D as a separate branch,
          though it's never hit in practice

builtins/trap.def
        - showtrap: free T even if show_default == 1 if it's a non-default
          trap string

                                   7/17
                                   ----
execute_cmd.c
        - execute_coproc: free NAME on invalid identifier error

lib/glob/glob.c
        - glob_vector: make sure NEXTLINK is allocated using malloc before
          passing it to free()
        - glob_filename: free RESULT before returning glob_error_return when
          there is only a filename

print_cmd.c
        - indirection_level_string: make sure we free PS4 after calling
          decode_prompt_string if *ps4 == 0

subst.c
        - parameter_brace_transform: if vtype == VT_VARIABLE, we need to free
          a non-null VAL

variables.c
        - assign_in_env: if NAME is not a valid shell identifier, free it
          after printing the error message and before returning. These are
          the rest of the fixes from Siteshwar Vashisht <svashisht@redhat.com>

                                   7/22
                                   ----
shell.c
        - main: set dollar_vars[0] to shell_script_filename before calling
          run_startup_files() in the non-interactive case. Restore it after
          run_startup_files returns so we can get better error messages if
          we can't open a script file. Suggested by several people, originally
          by Marc Aurèle La France <tsi@tuyoix.net> back in 2/2021 (in a
          different form) and most recently by Tapani Tarvainen
          <bash@tapanitarvainen.fi>

                                   7/28
                                   ----
trap.c
        - any_signals_trapped: return that a signal is trapped only if it's
          not ignored. This is an additional opportunity for optimization,
          reported in https://bugzilla.redhat.com/show_bug.cgi?id=1981926

                                   7/30
                                   ----
examples/loadables/sleep.c
        - main: if the uconvert conversion fails, but the argument appears to
          contain a GNU-like interval specifier like "1m30s", return
          EX_DISKFALLBACK so the execute_builtin code tries to run the
          external version

builtins/enable.def
        - enable_shell_builtin: if the builtin isn't found, return EX_NOTFOUND
          to allow the caller (enable_builtin) to react differently if it
          wants to
        - dyn_load_builtin: if the shared object isn't found, return EX_NOTFOUND,
          change enable_builtin to deal with it
        - enable_builtin: if there are no supplied options, and we attempt to
          enable a non-existent builtin, try modifying `enable name' to the
          equivalent of `enable -f name name' and return success if we
          successfully load a builtin from a shared object. Proposed several
          times, most recently by Robert Elz <kre@munnari.OZ.AU>

doc/{bash.1,bashref.texi}
        - enable: document new behavior of `enable NAME' when NAME is not a
          current shell builtin

                                    8/3
                                    ---
lib/glob/sm_loop.c
        - GMATCH: check for interrupts or terminating signals each time through
          the loop and return FNM_NOMATCH immediately if received. Let the
          higher layers deal with interrupting the match and jumping out.
          Inspired by a report from andrej@podzimek.org

                                    8/6
                                    ---
subst.c
        - {parameter_brace_remove_pattern,parameter_brace_transform,
           parameter_brace_substring,parameter_brace_casemod,
           parameter_brace_patsub}: make sure the IND argument is of type
           arrayind_t to handle the full range of subscripts. Reported by
           felix@f-hauri.ch

builtins/printf.def
        - printf_builtin: take new format specifier: %Q. This acts like %q
          but applies any supplied precision to the original unquoted
          argument, then quotes that result and outputs the entire quoted
          string, preserving the original field width. Originally suggested
          back in 4/2020 by Sam Liddicott <sam@liddicott.com>

subst.c
        - char_is_quoted: check whether or not we are on the second or later
          line of a command with an unclosed quoted string from a previous
          line. If we are, see if it's closed before the character we're
          checking, so we don't interpret a closing quote as starting a new
          quoted string. Reported several times, most recently by
          Phi Debian <phi.debian@gmail.com> in 6/2021.

                                    8/9
                                    ---
parse.y,subst.c
        - locale_expand: if the variable SINGLEQUOTE_TRANSLATIONS is non-zero,
          single-quote the translated result of $"..." (if it's different from
          the untranslated string)

builtins/shopt.def
        - noexpand_translation: new option to expose the value of
          SINGLEQUOTE_TRANSLATIONS

                                   8/10
                                   ----
doc/{bash.1,bashref.texi}
        - noexpand_translation: add description of new option

                                   8/16
                                   ----
builtins/printf.def
        - printf_builtin: initialize retval after parsing arguments, since we
          use it for the `v' option. Bug report from Keith Thompson
          <Keith.S.Thompson@gmail.com>

lib/sh/unicode.c
        - u32tocesc: fix typo that returned \uXXXXXXXX instead of \UXXXXXXXX.
          From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=992257 by
          <nabijaczleweli@nabijaczleweli.xyz>

                                   8/17
                                   ----
siglist.c
        - include command.h before general.h for PARAMS and prototypes. Report
          from Osipov, Michael (LDA IT PLM) <michael.osipov@siemens.com>

                                   8/18
                                   ----
lib/readline/colors.c
        - S_ISBLK: make sure it's defined before we use it, like in complete.c

lib/readline/complete.c,{bashline,variables}.c
        - minor changes to prep for making rl_completer_word_break_characters
          `const'

subst.[ch],pcomplete.c
        - split_at_delims: the DELIMS argument is now `const'; change callers

lib/readline/rlmbutil.h
        - _rl_wcwidth: add function prototype for inline function declaration

lib/readline/bind.c
        - _rl_get_keyname: print keys greater than 160 (which are valid UTF-8)
          as octal escape sequences

lib/readline/text.c
        - do_lowercase_version: return 99999 to prevent the linker from
          combining it with _rl_null_function and optimizing away the separate
          copy. That messes with function pointer comparisons. Part of this
          batch of fixes from sparrowhawk996@gmail.com

                                   8/19
                                   ----
complete.c,readline.c,readline.h
        - rl_completer_word_break_characters: now const char * like
          rl_basic_word_break_characters; element of readline state struct
          used to save it also const. THIS IS AN API CHANGE

bashline.c
        - orig_rl_completer_word_break_characters: now const char * like
          rl_completer_word_break_characters

                                   8/20
                                   ----
bashline.c
        - bash_directory_completion_hook: if direxpand and dirspell are both
          set while trying to complete an absolute pathname as a command, don't
          take a spell-corrected directory name that is shorter than the
          original hint. https://bugzilla.redhat.com/show_bug.cgi?id=1782809

builtins/common.[ch]
        - sh_noassign: convenience function to print an error message when a
          user attempts an assignment to a "noassign" variable. Not used yet

assoc.[ch]
        - assoc_to_kvpair_list: new function, returns a WORD_LIST containing
          key-value pairs as separate words

array.[ch]
        - array_to_kvpair_list: new function, returns a WORD_LIST containing
          index-value pairs as separate words

subst.c
        - string_transform: handle '@k' transform like '@K'
        - valid_parameter_transform: 'k' is a valid transform operator
        - array_transform: handle '@k' transformation by calling one of
          array_to_kvpair_list or assoc_to_kvpair_list and treating the
          result as if expanding the array depending on whether the index is
          `@' or `*' with the usual meanings

doc/{bash.1,bashref.texi}
        - document new '@k' parameter transformation operator

                                   8/27
                                   ----
lib/readline/kill.c
        - rl_unix_filename_rubout: handle pathnames that consist only of one
          or more slashes. The old code went too far and deleted the previous
          word as well. From dabe@dabe.com

                                   8/31
                                   ----
parse.y
        - STRING_SAVER: now save and restore shell_input_line_len; not sure
          why it wasn't done before; fix push_string and pop_string accordingly
        - prompt_again: now takes a parameter FORCE; not used yet (every
          caller passes 0), needs more thought

builtins/evalstring.h
        - open_redir_file: broke code that expands the redirection and opens
          the resultant filename into a new function, called from cat_file

redir.h
        - open_redir_file: extern declaration here for now

builtins/evalstring.c
        - parse_string: takes a new argument: COMMAND **cmdp; if non-null, saves
          the parsed command to *cmdp and lets the caller manage it itself.
          global_command is still not modified. Changed callers in parse.y

                                    9/1
                                    ---
parse.y
        - parse_string_to_command: stripped-down version of xparse_dolparen
          that takes a string, runs it through the parser, and returns the
          resultant COMMAND *; uses parse_string with the new argument

externs.h
        - parse_string_to_command: extern declaration

builtins/evalstring.c
        - can_optimize_cat_file: new function, takes a COMMAND * argument and
          returns true if the command can be optimized like $(<file); changed
          parse_and_execute to call it

subst.c
        - optimize_cat_file: new function, optimizes $(<file) without creating
          a new process. Uses redir_open to open the redirection file, after
          expansion, and calls read_comsub to read from it directly
        - read_comsub: now reads into a 4096 byte buffer (COMSUB_PIPEBUF)
        - command_substitute: if the string begins with a `<' and isn't followed
          by any of "<>&", see if we can optimize the command and call
          optimize_cat_file to do it if we can. 

                                    9/2
                                    ---
configure.ac,config.h.in,lib/sh/setlinebuf.c
        - SETVBUF_REVERSED: remove all references

configure.ac,aclocal.m4
        - AC_OUTPUT: move created files and commands to AC_CONFIG_FILES and
          AC_CONFIG_COMMANDS; call AC_OUTPUT without any arguments
        - require autoconf version 2.63
        - AC_HELP_STRING -> AS_HELP_STRING
        - replace references to $ac_cv_prog_gcc with $GCC
        - AC_C_LONG_DOUBLE -> AC_TYPE_LONG_DOUBLE
        - enable-alt-array-implementation: new configure option, placeholder
          for later

unwind_prot.c
        - stddef.h: include if HAVE_STDDEF_H is defined, not STDC_HEADERS

bashansi.h
        - memory.h: don't include any more; assume <string.h> has all the
          necessary defines

aclocal.m4
        - AC_HEADER_STDC: remove AC_REQUIRE calls to this; change tests to use
          appropriate checks instead of STDC_HEADERS

                                    9/3
                                    ---
configure.ac,config.h.in
        - AC_TYPE_SIGNAL,BASH_TYPE_SIGHANDLER: remove calls, remove mention of
          RETSIGTYPE and VOID_SIGHANDLER
        - AC_USE_SYSTEM_EXTENSIONS: use this instead of AC_ISC_POSIX (which is
          well and truly obsolete) and AC_MINIX (which just calls it anyway).
          All the right defines are already present
        - AC_HEADER_TIME: removed
        - AC_HEADER_STDC: removed
        - AC_DECL_SYS_SIGLIST: replaced with BASH_DECL_SYS_SIGLIST
        - BASH_FUNC_CTYPE_NONASCII: removed

sig.h,lib/readline/signals.c
        - RETSIGTYPE -> void, SIGHANDLER_RETURN -> return

include/posixtime.h
        - don't bother with TIME_WITH_SYS_TIME, just include <sys/times.h> if
          we have it and include <time.h> unconditionally

include/chartypes.h,lib/readline/chardefs.h
        - IN_CTYPE_DOMAIN: no longer uses STDC_HEADERS define, checks against
          CHAR_MAX for non-C89 systems, still a no-op on C89 systems

lib/readline/chardefs.h
        - memory.h: don't include, no need for STDC_HEADERS; assume the mem*
          functions are defined in <string.h> as in C89
        - now that we assume IN_CTYPE_DOMAIN bounds its argument to unsigned
          chars, we don't need NON_NEGATIVE checks at all

lib/readline/chardefs.h,util.c
        - ALPHABETIC -> _rl_alphabetic_p

                                    9/8
                                    ---

lib/sh/strftime.c
        - include <posixtime.h> after reworking above; include <sys/types.h>
          unconditionally in case it defines time_t. From a report by
          Ori Sky Farrell <bash@ori.mx>

                                    9/9
                                    ---
lib/readline/search.c
        - rl_history_search_internal: set rl_undo_list to NULL after calling
          rl_maybe_save_line, since it will be restored one way or another
          after the search completes, and we don't want it to be freed twice
        - rl_history_search_internal: leave the current history offset at the
          position of the last matching history entry. This means that things
          like ^P will start back from that history entry, ^N will move
          forward from there, and operate-and-get-next will work like it does
          with incremental searches. Reported by Vandrus Zoltán
          <vandrus.zoltan@gmail.com>

                                   9/10
                                   ----
aclocal.m4
        - BASH_C_LONG_LONG: removed
        - BASH_TYPE_LONG_DOUBLE: removed
        - BASH_TYPE_LONG_LONG,BASH_TYPE_UNSIGNED_LONG_LONG: removed
        - BASH_FUNC_CTYPE_NONASCII: removed
        - BASH_SYS_SIGNAL_VINTAGE,BASH_SYS_REINSTALL_SIGHANDLERS: don't
          require AC_TYPE_SIGNAL, use void instead of RETSIGTYPE
        - BASH_TYPE_SIGHANDLER: removed

configure.ac,aclocal.m4,config.h.in
        - BASH_TYPE_LONG_LONG: removed, call AC_TYPE_LONG_LONG_INT directly,
          change #define to HAVE_LONG_LONG_INT
        - BASH_TYPE_UNSIGNED_LONG_LONG: removed, call AC_TYPE_UNSIGNED_LONG_LONG_INT
          directly, change #define to HAVE_UNSIGNED_LONG_LONG_INT

externs.h,include/typemax.h,lib/sh/{fmtullong,snprintf,strtoimax,strtoll,
strtoull,strtoumax}.c
        - HAVE_LONG_LONG -> HAVE_LONG_LONG_INT
        - HAVE_UNSIGNED_LONG_LONG -> HAVE_UNSIGNED_LONG_LONG_INT

configure.ac
        - AC_TRY_COMPILE -> AC_COMPILE_IFELSE
        - BASH_CHECK_TYPE (intmax_t) -> AC_TYPE_INTMAX_T
        - BASH_CHECK_TYPE (uintmax_t) -> AC_TYPE_UINTMAX_T
        - BASH_CHECK_TYPE (sig_atomic_t): removed

aclocal.m4
        - BASH_FUNC_STRSIGNAL: changed to use AC_LINK_IFELSE
        - BASH_FUNC_LSTAT: changed to use AC_LINK_IFELSE
        - BASH_FUNC_SBRK: changed to use AC_LINK_IFELSE and AC_RUN_IFELSE,
          fixed typo
        - BASH_CHECK_SPEED_T: changed to use AC_COMPILE_IFELSE
        - BASH_TYPE_SIG_ATOMIC_T: use BASH_CHECK_TYPE instead of AC_CHECK_TYPE
        - BASH_STRUCT_DIRENT: new macro, like _AC_STRUCT_DIRENT but public and
          sets a different bash-specific shell variable
        - BASH_STRUCT_DIRENT_D_{INO,FILENO,NAMLEN}: call BASH_STRUCT_DIRENT
          with a different first argument instead of using inline code and
          AC_TRY_COMPILE

                                   9/11
                                   ----
[prayers for the victims of 9/11/2001]

aclocal.m4
        - BASH_CHECK_DECL: just call AC_CHECK_DECLS and use the default
          includes, which includes the files we used to specify
        - BASH_FUNC_INET_ATON: changed to use AC_LINK_IFELSE
        - BASH_STRUCT_WEXITSTATUS_OFFSET: changed to use AC_RUN_IFELSE
        - BASH_FUNC_OPENDIR_CHECK: changed to use AC_RUN_IFELSE
        - BASH_FUNC_ULIMIT_MAXFDS: changed to use AC_RUN_IFELSE
        - BASH_UNDER_SYS_SIGLIST: changed to use AC_RUN_IFELSE
        - BASH_SYS_SIGLIST: changed to use AC_RUN_IFELSE
        - BASH_FUNC_DUP2_CLOEXEC_CHECK: changed to use AC_RUN_IFELSE
        - BASH_FUNC_GETENV: changed to use AC_RUN_IFELSE
        - BASH_FUNC_GETCWD: changed to use AC_RUN_IFELSE
        - BASH_FUNC_FNMATCH_EXTMATCH: changed to use AC_RUN_IFELSE
        - BASH_FUNC_POSIX_SETJMP: changed to use AC_RUN_IFELSE
        - BASH_FUNC_STRCOLL: changed to use AC_RUN_IFELSE
        - BASH_FUNC_PRINTF_A_FORMAT: changed to use AC_RUN_IFELSE
        - BASH_SYS_PGRP_SYNC: changed to use AC_RUN_IFELSE
        - BASH_SYS_SIGNAL_VINTAGE: changed to use AC_RUN_IFELSE
        - BASH_SYS_NAMED_PIPES: changed to use AC_RUN_IFELSE
        - BASH_CHECK_RTSIGS: changed to use AC_RUN_IFELSE
        - BASH_CHECK_MULTIBYTE: changed to use AC_RUN_IFELSE
        - RL_LIB_READLINE_VERSION: changed to use AC_RUN_IFELSE
        - BASH_CHECK_WCONTINUED: changed to use AC_RUN_IFELSE
        - BASH_FUNC_SNPRINTF: changed to use AC_RUN_IFELSE
        - BASH_FUNC_VSNPRINTF: changed to use AC_RUN_IFELSE
        - BASH_FUNC_FNMATCH_EQUIV_FALLBACK: changed to use AC_RUN_IFELSE
        - BASH_DECL_PRINTF: changed to use AC_RUN_IFELSE
        - BASH_TYPE_RLIMIT: rewrote to avoid quad_t, now uses AC_COMPILE_IFELSE
          to determine whether rlim_t is available, otherwise determines the
          value of RLIMTYPE based on sizeof(rlim.rlim_cur): int, long, or
          long long
        - BASH_SIZEOF_RLIMIT,BASH_SIZEOF_QUAD_T: helper macros for
          BASH_TYPE_RLIMIT in the case that rlim_t is not present

configure.ac
        - BASH_CHECK_DECL -> AC_CHECK_DECLS
        - quad_t: use AC_CHECK_TYPE (new style) instead of BASH_CHECK_TYPE

                                   
                                   9/14
                                   ----
execute_cmd.c
        - time_command: if we longjmp back to the top_level we saved, make sure
          we're in the same subshell environment before printing the timing
          stats. We could have longjmped back from a child process of the
          command or pipeline we want to time. From a report by
          Sergej Alikov <sergej@alikov.com>
        - time_command: restore command->flags even if we longjmp back

general.c
        - check_binary_file: if the first line of the ENOEXEC file starts with
          a `#!', check the rest of the buffer for NULs to determine whether
          this is a binary file. Since we only check the first line, a #! line
          followed by binary data could be confused for a shell script

                                   9/16
                                   ----
bashjmp.h
        - EXITBLTIN: new longjmp `code' value: used by the exit builtin

{execute_cmd,shell,subst,trap}.c,builtins/evalstring.c
        - treat EXITBLTIN exactly the same as EXITPROG (for now)

builtins/exit.def
        - exit_builtin: jump_to_top_level with value EXITBLTIN

builtins/evalstring.c
        - parse_and_execute: EXITBLTIN has its own case, with the same contents
          as EXITPROG

                                   9/17
                                   ----
builtins/evalstring.c
        - parse_and_execute: change EXITBLTIN case to avoid running the
          unwind-protect stack to the `pe_dispose' tag (which has the effect
          of running all the unwind-protects installed by the commands in
          the string) if we're executing in a function and EXIT is trapped.
          This has the effect of running the EXIT trap in the function context,
          which is what we do when we're not in parse_and_execute (eval,
          bash -c, command substitution, etc.)

                                   9/18
                                   ----
arrayfunc.c
        - expand_and_quote_kvpair_word,quote_compound_array_word,
          expand_and_quote_assoc_word,quote_compound_array_list: make sure
          the value has CTLESC characters doubled even when being single-
          quoted, since that's what the parser does with standalone assignment
          statements. From https://savannah.gnu.org/support/?110538

                                   9/19
                                   ----
aclocal.m4
        - AC_TRY_COMPILE -> AC_COMPILE_IFELSE (AC_TRY_LINK calls left to
          modify to avoid obsolete warnings)
        - BASH_STRUCT_WINSIZE: broke out checks for separate headers into new
          macros, call them and work with the results; needed to avoid two
          calls to AC_TRY_COMPILE
        - BASH_CHECK_KERNEL_RLIMIT: avoid multiple calls to AC_TRY_COMPILE by
          breaking basic test for RLIMIT_ defines into a separate test and
          calling the HPUX-specific _KERNEL test only if that fails

m4/gettext.m4,configure.ac
        - AM_GNU_GETTEXT -> BASH_GNU_GETTEXT: remove deprecation warning, since
          [no-libtool] is how we use this; rename to avoid someone's local
          copy from overriding ours

                                   9/20
                                   ----
aclocal.m4
        - BASH_CHECK_MULTIBYTE: take out code that checks for nl_langinfo(CODESET)
          since that's already provided by AM_LANGINFO_CODESET, which is
          called by BASH_GNU_GETTEXT. We AC_REQUIRE it here, though, to avoid
          problems from future changes
        - BASH_SYS_SIGNAL_VINTAGE: broke the code that checks for the different
          signal vintages into different AC_DEFUNed macros, changed
          BASH_SYS_SIGNAL_VINTAGE to stitch them together with shell code
          testing the cached variables
        - AC_TRY_LINK -> AC_LINK_IFELSE: there are no more autoconf warnings

                                   9/21
                                   ----
array.[ch]
        - array_from_argv: new convenience function

array.h
        - num_elements: now an arrayind_t, since that's the type of indices, it
          makes sense to allow that many elements

                                   9/22
                                   ----
lib/readline/terminal.c
        - rl_term_kP: fix typo. Fix from Koichi Murase <myoga.murase@gmail.com>

                                   9/25
                                   ----
lib/readline/display.c
        - rl_clear_visible_line: call _rl_clear_to_eol with _rl_screenwidth as
          the argument so we clear out the entire line even if the terminal
          doesn't have a clear-to-eol sequence; make sure to add a call to
          rl_cr after that so we know we're always in column 0
        - _rl_redisplay_after_sigwinch: just call rl_clear_visible_line instead 
          of erasing the last line of the display
        - _rl_redisplay_after_sigwinch: if the prompt is longer than the screen
          width, make sure to call _rl_reset_prompt to recalculate the
          local_prompt_newlines array. Should fix issue from
          https://savannah.gnu.org/support/index.php?110543

redir.c
        - do_redirection_internal: if given [N]<&WORD- or [N]>&WORD- and WORD
          expands to null, make it identical to <&- or >&- and close file
          descriptor N (default 0). From a discussion back in 5/2021

                                   9/27
                                   ----
arrayfunc.c
        - expand_compound_array_assignment: since we run the string through
          the parser to turn it into a list (so we can make sure all shell
          metacharacters are properly quoted), we need to remove the CTLESC
          the parser uses to quote CTLESC and CTLNUL in *unquoted* words.
          The rest of the code assumes this has been done, and assumes that
          any CTLESC characters passed to expansion are part of the original
          word and should themselves be quoted, doubling the number of CTLESCs

                                   9/28
                                   ----
arrayfunc.c
        - expand_and_quote_kvpair_word,quote_compound_array_word,
          expand_and_quote_assoc_word,quote_compound_array_list: if we are
          single-quoting associative array subscripts and associative and
          indexed array values, we need to quote CTLESC characters, because
          that's how they come out of the parser and how the assignment
          statement code expects to see them.
          Fixes https://savannah.gnu.org/support/index.php?110538

                                   9/29
                                   ----
subst.c
        - parameter_brace_transform: invalid transformation operators are now
          fatal errors in non-interactive shells, as with the other word
          expansions. Reported by Martin Schulte <gnu@schrader-schulte.de> in
          https://lists.gnu.org/archive/html/bug-bash/2020-10/msg00026.html

execute_cmd.c
        - execute_disk_command: if we're optimizing out the fork (nofork) and
          not directly in a pipeline (pipe_in == pipe_out == NO_PIPE), only
          modify shell_level if subshell_environment says we're not already in
          a pipeline. Reported by Paul Smith <psmith@gnu.org> 10/11/2020
          against GNU make

evalstring.c
        - should_suppress_fork: remove #if 1 for code that tries to suppress
          the fork in a process substitution subshell

                                   9/30
                                   ----
builtins/mapfile.def
        - do_chop: make sure we're comparing unsigned chars when checking
          whether the delim is the last character on the line. Reported by
          Greg Wooledge <greg@wooledge.org>

                                   10/1
                                   ----
lib/readline/rltty.c
        - rl_deprep_terminal: if we're not echoing to the terminal
          (_rl_echoing_p == 0), and we just output the bracketed paste end
          sequence, output a newline to compensate for the \r at the end of
          BRACK_PASTE_FINI, since redisplay didn't do it for us. Reported by
          Siteshwar Vashisht <svashisht@redhat.com>

shell.h
        - MATCH_EXPREP: new matching flag, understood only by pattern
          substitution; means to expand unquoted `&' in the replacement
          STRING to the match of PATTERN

subst.c
        - shouldexp_replacement: uncommented
        - pat_subst: we expand & in the replacement string if MATCH_EXPREP
          appears in MFLAGS
        - parameter_brace_patsub: push call to shouldexp_replacement out here,
          after the replacement string is expanded; set MATCH_EXPREP if there
          is an unquoted `&' (by backslash) in the expanded replacement
          string

doc/{bash.1,bashref.texi}
        - pattern substitution: overhauled the description, moved each of the
          possible forms to be tags in the tagged paragraph. The description
          now specifies the expansions that the replacement string undergoes
        - pattern substitution: documented new behavior of unquoted & in the
          replacement string

                                   10/4
                                   ----
shell.c
        - include <malloc/shmalloc.h> if we're debugging malloc (MALLOC_DEBUG)
          so we can get an extern declaration of trace_malloc_stats

                                   10/5
                                   ----
subst.c
        - expand_subscript_string: allocate new memory for td.word, copying
          STRING, in case it gets freed on error by expand_word_internal.
          Report and fix from Koichi Murase <myoga.murase@gmail.com>

lib/malloc/malloc.c
        - malloc_usable_size: return the allocated size instead of the chunk
          size, since writing over the bounds checking will cause fatal errors.
          Reported by Julien Moutinho <julm+bash@sourcephile.fr>, fix from
          Dominique Martinet <asmadeus@codewreck.org>

arrayfunc.c
        - unbind_array_elememnt: pass (flags&VA_NOEXPAND) to skipsubscript(),
          instead of unconditionally passing 1 if we're operating on an
          associative array. This is consistent with how valid_array_reference
          determines the length of the subscript.
          Report and fix from Koichi Murase <myoga.murase@gmail.com>

                                   10/6
                                   ----

subst.c
        - skip_to_delim: add a new value for FLAGS. If FLAGS&2, we assume that
          START is one character after the opening OPEN. If not, we assume that
          START is at OPEN, and needs to be incremented past it. Part of fix
          from Koichi Murase <myoga.murase@gmail.com>

arrayfunc.c
        - unbind_array_element: make sure to pass FLAGS to skipsubscript with
          bit 2 set, since we are passed a SUB index that's one past the
          opening bracket. Rest of fix from
          Koichi Murase <myoga.murase@gmail.com>
        - array_variable_name: make sure we pass (FLAGS&1) to skipsubscript, so
          we don't inadvertently pass a value with bit 2 set, which would
          cause an off-by-one error in subscript parsing

                                   10/8
                                   ----
trap.c
        - restore_traps: inverse of reset_signal_handlers. This understands
          how reset_signal_handlers changes the signal disposition while
          leaving the trap string in place, and knows how to restore flags
          and state based on that preserved trap string and whether or not
          the signal is "special" to the shell.

builtins/exec.def
        - exec_builtin: instead of using restore_original_signals to completely
          cancel the traps, call reset_signal_handlers so the trap strings are
          preserved. Then if the exec fails (and we're not exiting) we can
          look at the trap strings and see how to restore the trap state.
          This calls restore_traps after reinitializing the shell signal
          handlers, using the trap strings saved by reset_signal_handlers.
          Fixes issue with not exiting after a failed exec clearing the EXIT
          trap reported by Mark March <march@systempad.org>, using the
          approach suggested by Robert Elz <kre@munnari.OZ.AU>

subst.c
        - expand_declaration_argument: when parsing options that modify
          attributes that affect how the value is handled (i, c, u, etc.),
          make sure to create an option string and call make_internal_declare
          with options that start with a `+' so the attribute is off when
          the assignment is performed and changes how the value is expanded.
          From a report by Léa Gris <lea.gris@noiraude.net>

lib/readline/complete.c
        - rl_display_match_list: even if _rl_completion_prefix_display_length
          is set to a non-zero value, pass the common prefix length to
          fnprint if we've turned on colored completion prefixes; passes
          through to fnprint via print_filename
        - fnprint: add the ellipsis if prefix_bytes exceeds the
          _rl_completion_prefix_display_length, add explicit check for
          prefix_bytes being longer since print_filename passes it through
          if colored-completion-prefix is set. This means that while
          completion-prefix-display-length still has precedence over
          colored-completion-prefix, it doesn't override it if both are set
          and the common prefix length is shorter than
          completion-prefix-display-length. From a report by
          Christoph Anton Mitterer <calestyo@scientia.net>

                                   10/10
                                   -----
parse.y
        - parse_dparen: if the last token is FOR, increment word_top and assign
          word_lineno like for other for loops. Fixes bug with LINENO after
          arithmetic for commands reported by
          Tom Coleman <thomas.james.coleman@gmail.com>

                                   10/11
                                   -----
execute_cmd.c
        - shell_execve: if execve fails with ENOENT, but executable_file()
          succeeds, display a slightly more descriptive error message. Prompted
          by a report from Andrea Monaco <andrea.monaco@autistici.org>

stringlib.c
        - strcreplace: allow backslash to escape a backslash, since we allow it
          to escape a `&'

                                   10/14
                                   -----
pcomplib.c
        - COMPLETE_HASH_BUCKETS: double to 512

stringlib.c
        - strcreplace: the last argument is now a flags argument. 1 has its
          previous meaning (glob); 2 means to allow backslash to escape a
          backslash (as added on 10/11)

subst.c
        - pat_subst: call strcreplace with 2 as the flags value

                                   10/15
                                   -----
doc/bashref.texi
        - updates to Installation section

doc/{mkposix,mkinst,mkrbash},doc/Makefile.in
        - changes to allow scripts to be run outside the source directory

                                   10/18
                                   -----
subst.c
        - patsub_replacement: controls whether pattern substitution expands `&'
          in the replacement string. Initialized to 1 by default

                                   10/19
                                   -----
doc/{bash.1,bashref.texi}
        - document bash's WCE SIGINT behavior when job control is not enabled
          and the shell receives a SIGINT while waiting for the foreground
          command to complete. Added at Red Hat's request. A complete
          discussion is at https://www.cons.org/cracauer/sigint.html

                                   10/25
                                   -----
builtins/shopt.def
        - patsub_replacement: new shell option, exposes patsub_replacement
          variable controlling whether pattern substitution expands `&' in
          the replacement string. Still enabled by default.

doc/{bash.1,bashref.texi}
        - patsub_replacement: document new shopt option

                                   10/26
                                   -----
lib/readline/display.c
        - expand_prompt: group runs of invisible characters at the right edge
          of the screen with the previous physical characters when setting
          local_prompt_newlines, since that's how update_line() expects to
          get it. Fix from sparrowhawk996@gmail.com.

lib/readline/macro.c
        - rl_end_kbd_macro: make sure current_macro_index is > 0 after
          subtracting the key sequence length, clamp it to 0 before writing
          the ending NULL. From a fuzzing report by
          Tillmann Osswald <tosswald@ernw.de>

lib/readline/isearch.c
        - _rl_isearch_dispatch: in the bracketed paste case, don't assume the
          pasted text is null-terminated, so use memcpy instead of strcpy for
          the length of the pasted text, then make sure the search string is
          null-terminated. From a fuzzing report by
          Tillmann Osswald <tosswald@ernw.de>

lib/readline/text.c
        - rl_transpose_words: make sure to preserve the value of rl_end from
          the beginning to the end of the function. From a fuzzing report by
          Tillmann Osswald <tosswald@ernw.de>

lib/readline/vi_mode.c
        - rl_vi_delete_to,rl_vi_change_to,rl_vi_yank_to: if we are redoing a
          command (_rl_vi_redoing == 1), save the old _rl_vimvcxt, allocate a
          new one, and restore the old one before returning. Prevents some
          pointer aliasing problems. From a fuzzing report by
          Tillmann Osswald <tosswald@ernw.de>

                                   10/29
                                   -----
arrayfunc.c
        - tokenize_array_reference: take valid_array_reference and add a third
          argument (char **SUBP), which, if non-NULL, gets the null-terminated
          subscript parsed from the NAME argument. If it's NULL, the caller
          gets the old valid_array_reference behavior. Fix from
          Koichi Murase <myoga.murase@gmail.com>
        - valid_array_reference: just call tokenize_array_reference with a
          NULL third argument
        - unbind_array_element: assume the caller (unset_builtin) passes a
          null-terminated SUB that's already been validated by a call to
          tokenize_array_reference so we don't need to call skipsubscript() or
          check VA_ONEWORD. Fix from Koichi Murase <myoga.murase@gmail.com>

arrayfunc.h
        - tokenize_array_reference: extern declaration

builtins/set.def
        - unset_builtin: use tokenize_array_reference to figure out T and pass
          that to unbind_array_element. Fix from
          Koichi Murase <myoga.murase@gmail.com>
        - unset_builtin: pass non-null argument to array_variable_part to get
          the length of the subscript (T), then cut off any final `]' before
          passing it to unbind_array_element, since that's what it now
          expects

subst.c
        - expand_string_for_rhs,expand_string_for_pat: assign td.word from
          newly-allocated memory in case it gets freed on error during the
          call to call_expand_word_internal(); free it manually when that
          call returns

                                   11/1
                                   ----
findcmd.c
        - search_for_command: if FLAGS includes CMDSRCH_STDPATH, don't look in
          the hash table for the command name. Prompted by a report from
          Roger Morris <roger.morris@gmail.com>

aclocal.m4
        - BASH_FUNC_POSIX_SETJMP: add a check by fetching the signal mask
          after the siglongjmp and making sure that SIGINT is not blocked,
          indicating we restored the original signal mask

                                   11/2
                                   ----
subst.c
        - expand_string_assignment: make sure to add W_TILDEEXP to the flags so
          expand_word_internal performs the right tilde expansion on tildes
          following an unquoted colon. Report from Anders Kaseorg
          <andersk@mit.edu>


                                   11/3
                                   ----
aclocal.m4
        - BASH_FUNC_POSIX_SETJMP: if cross-compiling, default to `present' if
          we've determined we have posix signal functions

                                   11/4
                                   ----
execute_cmd.c
        - SET_LINE_NUMBER: set line_number, but don't set line_number_for_err_trap
          if we're already running the ERR trap
        - GET_LINE_NUMBER: evaluates to line_number_for_err_trap if we're
          running the ERR trap and executing_line_number() otherwise
        - execute_function: use GET_LINE_NUMBER to push the value for the line
          number into the BASH_LINENO array
        - execute_command_internal,execute_arith_command,execute_cond_command:
          use SET_LINE_NUMBER to avoid overwriting line_number_for_err trap
          while executing the ERR trap. Tentative fix for `caller' problem
          reported by Quinn Grier <quinn@quinngrier.com>

configure.ac,patchlevel.h
        - set bash version to 5.2-devel, meaning shell_compatibility_level = 52,
          which required updating tests (array.tests, array21.sub,
          quotearray3.sub, new-exp10.sub, history2.sub). The first three are
          because bash-5.2 flushes an indexed array but does not unset the
          variable when given `unset a[@]' or `unset[*]' (that is, it acts
          like `a=()' instead of `unset a'); the other two are because the
          version number changed

                                   11/8
                                   ----
doc/Makefile.in
        - bash.info: use `makeinfo -o' instead of calling infopost.sh to edit
          the filename, since the tags table includes absolute byte offsets to
          nodes. From https://savannah.gnu.org/support/?110557

                                   11/15
                                   -----
examples/loadables/realpath.c
        - add -a NAME argument to put canonicalized pathnames into an indexed
          array instead of displaying them on stdout. Suggested by
          felix@f-hauri.ch

lib/readline/colors.c
        - _rl_custom_readline_prefix: new function, looks in $LS_COLORS for a
          custom extension (*.readline-colored-completion-prefix) and uses that,
          if found, as the default color for the common prefix displayed when
          `colored-completion-prefix' is set. Suggested by
          Christoph Anton Mitterer <calestyo@scientia.net>
        - _rl_print_prefix_color: try the return value from _rl_custom_readline_prefix
          before defaulting to the C_PREFIX (C_SOCK) color. Suggested by
          Christoph Anton Mitterer <calestyo@scientia.net>

lib/readline/doc/{readline.3,rluser.texi},doc/bash.1
        - readline-colored-completion-prefix: document new custom suffix for
          readline's colored-completion-prefix color

                                   11/16
                                   -----
doc/{bash.1,bashref.texi},builtins/set.def
        - set: modify usage synopsis slightly, based on
          https://bugzilla.redhat.com/show_bug.cgi?id=2022324

builtins/set.def
        - unset_builtin: add shell compatibility level check <= bash-5.1 to
          force `unset a[@]' to unset array variable `a', like in previous
          versions, instead of unsetting associative array element `@' or
          removing all elements of an indexed array without unsetting the
          variable itself

builtins/common.c
        - set_expand_once: now a no-op if the shell compatibility level is
          <= bash-5.1, preserving the previous versions' behavior for [[ -v
          (dependent on assoc_expand_once instead of forcing it)

subst.c
        - parameter_brace_expand_rhs: make sure that the final value assigned
          is always returned from ${a:=b}, even when `a' has a variable
          attribute that modifies the value on assignment. Reported back on
          1/20/2021 by oguzismailuysal@gmail.com; bash-5.2 tag removed

                                   11/22
                                   -----
doc/{bashref.texi,bash.1}
        - unset: change the description of `unset name[@]' (unset name[*])
          to reflect the new behavior (unset associative array subscripts or
          remove all elements from an indexed array) and the difference from
          previous versions
        - set: document -r for restricted shell mode
        - restricted shell: change occurrences of `set +o restricted' to
          `shopt -u restricted_shell'. From a report from
          Jin Xiang <jxiang.sd@gmail.com>
        - read: note that read -t0 may return 0 if a subsequent read will
          return EOF. From a suggestion by Dale R. Worley
          <worley@alum.mit.edu>

execute_cmd.c
        - execute_arith_command,eval_arith_for_expr: don't pass EXP_EXPANDED
          to evalexp if shell_compatibility_level > 5.1, assuming that the
          expression has been quoted by Q_ARITH handling

test.c
        - test_arithcomp: if we're being called by the conditional command
          code and treating the arguments to the arithmetic operators as
          expressions, don't pass EXP_EXPANDED to evalexp if the shell
          compatibility level is > 5.1, assuming that the expression has been
          quoted by Q_ARITH handling

                                   11/29
                                   -----
examples/loadables/getconf.[ch]
        - getconf: new implementation of loadable builtin, based on glibc
          getconf

examples/loadables/sleep.c
        - parse_gnutimefmt: parse GNU interval format (2m30s), returning
          seconds and microseconds like uconvert
        - sleep: use parse_gnutimefmt if uconvert can't parse the format right
          away and "dhms" appears in the format string. Don't return
          EX_DISKFALLBACK under any circumstances

                                   11/30
                                   -----

builtins/wait.def
        - wait_builtin: refer to unset_waitlist only if JOB_CONTROL is enabled.
          Report from Joel Ebel <jbebel@google.com>

parse.y,builtins/set.def
        - changes for minimal config restrictions

configure.ac,config.h.in
        - --enable-translatable-strings: new configuration option to allow
          $"..." support to be compiled in or out; not included in the minimal
          shell configuration

shell.c
        - main: don't include any of the dump-strings options if
          TRANSLATABLE_STRINGS is not defined

lib/sh/shquote.c
        - sh_backslash_quote_for_double_quotes: needed for translatable strings

parse.y
        - support for translating $"..." strings now conditional on
          TRANSLATABLE_STRINGS

locale.c
        - locale_expand: now conditional on TRANSLATABLE_STRINGS

subst.c
        - expand_string_dollar_quote: support for $"..." now conditional on
          TRANSLATABLE_STRINGS

doc/bashref.texi
        - --enable-translatable-strings: document new configuration option

                                   12/2
                                   ----
subst.c
        - verify_substring_values: now that the default compatibility level is
          52, and the Q_ARITH code is enabled, make the EXP_EXPANDED flag for
          evalexp() dependent on the compatibility level
        - param_expand: arithmetic substitution: make EXP_EXPANDED flag
          for evalexp() dependent on the compatibility level
        - expand_word_internal: don't call expand_array_subscript if the
          shell compatibility level is 51 or below (Q_ARITH)

test.c
        - test_unop: if the shell compatibility level is > 51, using [@] with
          an existing associative array will report on a key of `@'

arrayfunc.c
        - array_expand_index: if the compatibility level is > 51, Q_ARITH is
          used and we don't pass EXP_EXPANDED to evalexp()

COMPAT,doc/bashref.texi
        - shell compatibility mode: document effects of setting the
          compatibility mode to 51

                                   12/3
                                   ----
lib/malloc/malloc.c
        - mremap: only use if MREMAP_MAYMOVE is defined, since we use the Linux
          version of the function signature

                                   12/6
                                   ----
bashhist.c
        - bash_add_history: if we're parsing a here-document (PST_HEREDOC), only
          suppress adding the newline between lines if we're not at the first
          line of the here-document (here_doc_first_line != 0). From a report
          by S0AndS0 <strangerthanbland@gmail.com>

                                   12/8
                                   ----
lib/readline/colors.c
        - _rl_custom_readline_prefix: use STREQN to check for the extension
          string in $LS_COLORS, since it's not necessarily null-terminated.
          From https://savannah.gnu.org/patch/?10158

                                   12/10
                                   -----
variables.c
        - set_int_value,set_string_value: broke common code for setting int
          and string dynamic variable values out into separate functions;
          changed all callers to use them where appropriate. set_int_value
          takes a flags argument saying whether or not to force the integer
          attribute on
        - assign_random: store the value assigned as the variable value so
          things like RANDOM=42; RANDOM+=7 generate consistent sequences
          like in ksh93
        - assign_seconds: store the value assigned as the variable value so
          things like SECONDS=42 ; SECONDS+=7 generate what's expected

doc/Makefile.in
        - changes to allow man pages that include others (.so FN) to be built
          outside the source tree

                                   12/13
                                   -----
arrayfunc.c
        - assign_array_element_internal: take an additional argument: char **NVALP.
          If non-null, it gets the value eventually assigned to the array
          element
        - assign_array_element: take an additional NVALP argument; pass it to
          assign_array_element_internal

arrayfunc.h
        - assign_array_element: new extern function declaration

{subst,variables}.c,builtins/{common.c,declare.def}
        - assign_array_element: change callers

subst.c
        - parameter_brace_expand_rhs: for the ${param:=value}, use the value
          returned by assign_array_element in NVALP as the return value, since
          it's the value ultimately assigned to the variable after possible
          modification (e.g., arithmetic evaluation). Reported by
          oguzismailuysal@gmail.com after flawed fix applied 11/16

                                   12/14
                                   -----
arrayfunc.h
        - array_eltstate_t: an object that encapsulates an array element's
          state (type, index, key, value) whether it's an indexed or
          associative array

arrayfunc.c
        - {init,flush}_eltstate: new functions to initialize and flush any
          allocated memory from array_eltstate_t objects. No allocation/
          deallocation functions yet; the only use is with a static instance
        - assign_array_element_internal: take an array_eltstate_t * instead of
          a char ** as the final argument, so we can return keys/indices and
          values depending on the type of array; populates it with the
          appropriate values
        - assign_array_element: take array_eltstate_t * as final argument
          instead of a char **; pass it to assign_array_element_internal

{subst,variables}.c,builtins/{common.c,declare.def}
        - assign_array_element: change callers to modify final argument

                                   12/15
                                   -----
arrayfunc.c
        - array_value_internal: now takes an array_eltstate_t * as the final
          argument; there is no more `rtype' argument in favor of the
          `subtype' member; returns the appropriate values in its members
        - array_value: changed to pass array_eltstate_t to array_value_internal,
          saves and fetches its `ind' member into *indp; saves `subtype'
          member into *rtype
        - get_arrary_value: changed to take array_eltstate_t as third argument,
          passes it to array_value_internal

{redir,expr}.c
        - get_array_value: changed callers; initializing the array_eltstate_t
          argument as necessary

test.c
        - test_builtin: changed to use get_array_value, adding AV_ALLOWALL to
          the flags, since it didn't use any QUOTED argument. Pass
          array_eltstate_t * as final argument and get subtype from it (the
          only thing we're interested in, to deallocate memory)

                                   12/16
                                   -----
arrayfunc.c
        - array_value: now takes a final argument of array_eltstate_t *, which
          it passes to array_value_internal; no more rtype and indp args.
          Callers are responsible for marshalling values into estatep

arrayfunc.h
        - array_value: changed function signature

subst.c
        - get_var_and_type,parameter_brace_expand_word: changed calls to
          array_value to use array_eltstate_t argument and initialize it
          appropriately. Copy values back from it to the parameters we need
          to modify

variables.c
        - assign_lineno: call set_int_value to store the value, like with
          RANDOM and SECONDS (from 12/10)

                                   12/17
                                   -----
{eval,execute_cmd}.c
        - when bypassing a parsed command because read_but_dont_execute is
          set, don't modify last_command_exit_value. From a report by
          Robert Elz <kre@munnari.OZ.AU>

parse.y
        - parse_comsub: make sure the first call to shell_getc to check whether
          or not it's an arithmetic expansion skips a quoted newline. From a
          report by Robert Elz <kre@munnari.OZ.AU>

                                   12/21
                                   -----
subst.c
        - parameter_brace_remove_pattern,parameter_brace_patsub,parameter_brace_casemod,
          parameter_brace_transform,parameter_brace_substring: now take an
          array_eltstate_t * argument in place of the arrayind_t argument, pass
          it to get_var_and_type; this generalizes the indexed array behavior
          of expanding array subscripts once to associative arrays via an
          eventual call to array_value_internal with a non-null KEY member
        - get_var_and_type: now takes an array_eltstate_t * argument in place
          of the arrayind_t argument; use it in calls to array_value so we
          can only expand array subscripts once whether they are indexed or
          associative arrays
        - parameter_brace_expand_word: take an array_eltstate_t * argument in
          place of the arrayind_t * argument; pass it to array_value; use a
          static version (which we init and flush) if the argument passed is
          NULL so we can get the right state passed back and forth
        - parameter_brace_expand: pass a pointer to a static array_eltstate_t
          to parameter_brace_expand_word, and use that in the various calls to
          parameter_brace_XXX functions that perform specific expansions in
          place of the old arrayind_t argument; make sure to flush it before
          returning, even on errors

                                   12/22
                                   -----
{trap,variables}.c
        - internal_warning: calls changed to use translatable strings
          consistently

error.[ch]
        - internal_debug: new function, prints a message like internal_warning,
          no-op if DEBUG is not defined
        - INTERNAL_DEBUG: macro that expands to internal_debug when DEBUG is
          defined, and nothing otherwise

{jobs,trap}.c
        - changed some internal_warning and internal_inform calls to use
          internal_debug, since they were active only when DEBUG is defined

parse.y
        - parse_comsub: add internal_debug call when a command substitution
          ends with unterminated here-documents

builtins/common.c
        - number_of_args: unconditionally return posparam_count

{jobs,execute_cmd,subst}.c,parse.y,builtins/{command.def,evalstring.c}
        - INTERNAL_DEBUG: use instead of calls to itrace protected by #ifdef
          DEBUG

                                   12/26
                                   -----
lib/glob/glob.c
        - glob_always_skip_dot_and_dotdot: initialize to 1 (enabled)

builtins/shopt.def
        - globskipdots: new shell option, exposes glob_always_skip_dot_and_dotdot

doc/{bash.1,bashref.texi}
        - globskipdots: document new shell option

execute_cmd.c
        - fix_arrayref_words: call valid_array_reference with 0 for third arg
          because the words have not undergone any word expansions yet and
          the quotes are still present. This makes things like
                A=[\[]=set
                unset A[\[]
          work

subst.c
        - word_list_split: if a word undergoes word splitting but is not
          changed, preserve any W_ARRAYREF flag into the new word. This makes
          things like
                rkey=']'
                unset A[$rkey]
          work because the unset builtin sees the W_ARRAYREF flag on its
          argument

                                   12/29
                                   -----
builtins/common.h
        - SET_VFLAGS: take a set of word flags, and set flags for use with
          valid_array_reference (vflags) and assign_array_element/bind_int_variable
          (bindflags) based on those flags and the setting of assoc_expand_once
          (moved from read.def and generalized)

arrayfunc.c
        - array_variable_name: now exclusively takes AV_xxx flags; understands
          how to translate AV_NOEXPAND to the right flag for skipsubscript;
          understands AV_ONEWORD and AV_NOEXPAND
        - array_variable_part: just passes the FLAGS arg to array_variable_name
        - assign_array_element: translates ASS_ flags to AV_ flags for
          array_variable_name
        - array_value_internal: now just passes flags straight through to
          array_variable_part (which sends them to array_variable_name)

builtins/common.[ch]
        - builtin_bind_var_to_int: now takes a new FLAGS third argument; passes
          it to bind_var_to_int

builtins/printf.def
        - printf_builtin: use SET_VFLAGS to set flags for builtin_bind_variable
          (bindflags); makes things like
                declare -A A; key=']' ; printf -v A[$key] "foo"
          work without a subscript error as long as assoc_expand_once is defined

builtins/read.def
        - read_builtin: use new common version of SET_VFLAGS instead of
          private version; changed to use new calling sequence; makes things like
                declare -A A; key=']' ; read A[$key] <<<"foo"
          work without a subscript error as long as assoc_expand_once is defined

builtins/wait.def
        - wait_builtin: use SET_VFLAGS for variable name with -p option
        - wait_builtin: call builtin_bind_var_to_int with new bindflags third
          argument

expr.c
        - expr_streval: just pass TFLAG (AV_xxx flags) straight through to
          array_variable_part

variables.c
        - bind_int_variable: translate the assignment flags (ASS_xxx) to
          VA_xxx flags for valid_array_reference calls (ASS_ONEWORD); translate
          assignment flags to AV_xxx flags for array_variable_part

                                   12/30
                                   -----
subst.c
        - parameter_brace_expand: when expanding an indirect variable, extend
          the special case for array[@] and array[*] (set -u/no positional
          parameters, obeying the baroque quoting rules) to the value of the
          indirection. Report and fix from konsolebox <konsolebox@gmail.com>

                                   12/31
                                   -----
parse.y
        - compound_list: when parsing a compound_list production, collect any
          pending here-documents after reading a newline, not after reading
          any command terminator. Fixes interactive-only prompting bug
          reported back in 8/2021 by Hyunho Cho <mug896@gmail.com>

                                 1/1/2022
                                 --------
bashline.c
        - set_filename_quote_chars: break code that modifies
          rl_filename_quote_characters based on whether DIRNAME needs to be
          expanded from bash_directory_completion_hook into its own function
        - bash_check_expchar: break code that checks whether DIRNAME will be
          word expanded from bash_directory_completion_hook into its own
          function 
        - bashline_reset,attempt_shell_completion: make sure complete_fullquote
          is set to 1 (as it is by default) in case a completion modifies it
        - bash_quote_filename: if we are completing (but not expanding --
          direxpand is unset) and backslash-quoting a filename with expansion
          characters as determined by bash_check_expchar, make sure
          filename_bstab is set not to include the expansion char (and any
          following char and closer) and set complete_fullquote to 0 so
          sh_backslash_quote uses filename_bstab. Fixes the longstanding issue
          of quoting a `$', for instance, if the rest of the filename contains
          any characters that need quoting in filenames. This assumes that the
          filename is unquoted (*QCP == 0) so the word will be expanded and is
          not part of the filename (if needed, we can use file_exists to check
          whether the expansion characters are actually part of the filename)

                                    1/7
                                    ---
examples/loadables/accept.c
        - new -b bindaddr option to bind to a specific IP address
        - move setsockopt calls before bind() to avoid TIME_WAIT issues. Fixes
          from Dzogovic Vehbo <dzove855@gmail.com>

                                   1/10
                                   ----
configure.ac
        - bumped version to 5.2-alpha.

                                   1/16
                                   ----

tests/{unicode1,glob2,intl2}.sub, tests/run-intl
        - minor changes to add warnings for missing locales that cause test
          failures

                                   1/17
                                   ----
parse.y
        - history_delimiting_chars: if we have a blank line by the time we
          hit the end of the tests, return a semicolon for the first blank
          line to avoid running lines of a multi-line command together.
          Fixes bug reported by Joakim Lindblad <joakim@cb.uu.se>

subst.c
        - expand_string_for_patsub: expand the replacement string for pattern
          substitution assuming that it will eventually be passed to
          strcreplace to replace `&' with the matched portion of the string.
          This calls expand_string_for_pat(), which leaves the string quoted
          and does not perform word splitting, then calls
          quote_string_for_repl to post-process the expanded string.
        - quote_string_for_repl: perform quote removal on passed string while
          replacing CTLESC escaping a `&' or a backslash with a backslash. The
          result must be passed to strcreplace
        - parameter_brace_patsub: call expand_string_for_patsub if
          patsub_replacement is set to quote 

                                   1/18
                                   ----
subst.c
        - read_comsub: make istring_index a size_t to avoid overflow with very
          large values of istring_size.
          From https://savannah.gnu.org/support/index.php?110596
        - expand_word_internal: make istring_index a size_t

                                   1/20
                                   ----
buitins/cd.def
        - add a description of `cd -' to the help text. Suggested by
          Rob Landley <rob@landley.net>

                                   1/21
                                   ----
lib/glob/glob.c
        - glob_vector: if we allocate NEXTLINK using malloc, and free it due to
          some allocation failure, reset FIRSTMALLOC to avoid duplicate frees
          later on

subst.[ch]
        - sub_append_string: the INDX parameter is now a size_t to avoid
          overflow

parse.y
        - decode_prompt_string: RESULT_INDEX is now a size_t to pass to
          sub_append_string

jobs.[ch],nojobs.c
        - wait_for_background_pids: now returns the number of jobs/processes
          reaped

builtins/wait.def
        - wait_builtin: if -p pid supplied without -n, make sure we do something
          useful if no job/pid arguments are supplied and there are no jobs.
          Reported by Oguz <oguzismailuysal@gmail.com>

builtins/read.def
        - read_builtin: if we have a timeout, use SIGALRM instead of select
          when in posix mode, since we use read instead of zread. Fixes bug
          reported by Andreas Schwab <schwab@linux-m68k.org>

subst.c
        - expand_string_dollar_quote: handle single-quoted and double-quoted
          strings that might include $' and $" without attempting translation;
          do more error checking for unterminated $' and $" that leaves those
          characters unmodified. This is for use by readline's various line
          expansion functions (shell_expand_line)

                                   1/23
                                   ----
parse.y,make_cmd.c
        - revert change that unconditionally processes $'...' and $"..." in
          here-document bodies; there are only a couple of cases where they
          should be processed in a double-quote environment

                                   1/24
                                   ----

subst.c
        - extract_dollar_brace_string: if we see another `${' on the rhs of
          the operator, reset the dolbrace_state to DOLBRACE_PARAM while we
          read this new ${...} string
        - extract_heredoc_dolbrace_string: new function, variant of
          extract_dollar_brace_string, to process the WORD in ${PARAM OP WORD}
          while expanding lines of here-document data. It's complicated by the
          requirement to add to the result string as we go along, since we
          need to change the contents of the input string with ansi expansion
          or locale translation.
        - string_extract_single_quoted: take a new third argument: ALLOWESC.
          This allows backslash to escape an embedded single quote, needed by
          extract_heredoc_dolbrace_string to process $'...'; changed callers

                                   1/25
                                   ----
parse.y
        - parse_matched_pair: ansi-expand $'...' in WORD for ${PARAM OP WORD}
          and single-quote the result if dolbrace_state == DOLBRACE_QUOTE
          (posix pattern removal operators) even if extended_quote == 0

subst.c
        - extract_heredoc_dolbrace_string: add logic to align with parse.y:
          parse_matched_pair and its $'...' expansion, including handling
          extended_quote

                                   1/27
                                   ----
builtins/evalstring.c
        - should_optimize_fork: broke conditions for optimizing away the fork
          for a simple command out of optimize_fork into new function, call
          from should_suppress_fork and optimize_subshell_command. Call from
          optimize_fork if (subshell_environment & SUBSHELL_PAREN), relying
          on fact that CMD_TRY_OPTIMIZING is only set in a couple of specific
          conditions
        - optimize_fork: call should_suppress_fork only if startup_state == 2;
          it does the extra checks for that specific case
        - optimize_fork: call should_optimize_fork if we're in a (list)
          subshell (subshell_environment & SUBSHELL_PAREN)
        - optimize_subshell_command: set CMD_TRY_OPTIMIZING on the right side
          of a `&&', `||', or `;' list as long as it's a simple command so
          we can check with optimize_fork() when it's time to execute it

execute_cmd.c
        - execute_in_subshell: call optimize_subshell_command for (list)
          subshells to either set CMD_NO_FORK for simple commands or set
          CMD_TRY_OPTIMIZING for likely candidates for later optimization

builtins/common.h,builtins/evalstring.c
        - optimize_fork: renamed to optimize_connection_fork; changed callers

                                   1/31
                                   ----
include/shmbutil.h
        - COPY_CHAR_I,SCOPY_CHAR_I: add check for locale_utf8locale and
          (c & 0x80) as in other macros

lib/sh/shquote.c
        - sh_backslash_quote_for_double_quotes: rewrote to use array indexing
          and COPY_CHAR_I to make it easier to drop in future calls to
          charvis() to make `unsafe' characters visible if FLAGS == 1

                                    2/1
                                    ---
parse.y
        - parse_comsub: if we are currently expanding aliases, temporarily
          turn off alias expansion if we are not in posix mode so we defer
          alias expansion until command_substitute(). Fixes double-expansion
          bug reported by Martijn Dekker <martijn@inlv.org> and aligns with
          https://www.austingroupbugs.net/view.php?id=1342
        - xparse_dolparen: turn off alias expansion entirely while running the
          parser: either we do it in parse_comsub (posix mode) or in
          command_substitute (default mode)
        - parse_string_to_command: ditto

subst.c
        - command_substitute: if we are expanding aliases, temporarily turn
          off alias expansion if we are in posix mode, since we already
          performed it in parse_comsub() and are using the command string
          reconstituted from the parse result

doc/bashref.texi
        - bash posix mode: add description of alias expansion and command
          substitution parsing and execution

                                    2/4
                                    ---
lib/readline/rltty.c
        - rl_deprep_terminal: set _rl_last_c_pos to 0 after outputting
          BRACK_PASTE_FINI, since the last character in that is \r. Partially
          address issue raised by Markus Schwarzenberg <markus.schwarzenberg@freenet.de>
          in https://lists.gnu.org/archive/html/bug-bash/2022-02/msg00056.html

                                    2/5
                                    ---
doc/{bash.1,bashref.texi}
        - minor typo fixes from Helge Kreutzmann <debian@helgefjell.de>

                                    2/7
                                    ---
{arrayfunc,variables}.c
        - ARRAY_EXPORT: changes to encode array and assoc variables using a
          scheme similar to shell functions so we can export arrays and
          differentiate them from scalar variables and differentiate array
          and assoc variables. Still not enabled by default.

variables.c
        - mk_env_string: third argument is now the variable's attributes or 0,
          with all the attributes we can export arrays

lib/readline/bind.c
        - active-region-start-color,active-region-end-color: new bindable
          string variables, one to set the active region color (instead of
          standout mode) and one to turn it off (instead of the "se" terminal
          capability). They set _rl_active_region_start_color and
          _rl_active_region_end_color variables via functions

lib/readline/display.c
        - putc_face: if setting standout mode, check for both the start color
          and end color variables and output the start color string. If turning
          off standout mode (normal face), output the end color string. Both
          variables must be set

lib/readline/{readline.c,rlprivate.h}
        - declarations for _rl_active_region_start_color and
          _rl_active_region_end_color

                                    2/8
                                    ---
bashline.c
        - initialize_readline: add bindable name `vi-edit-and-execute-command'

shell.c
        - subshell_exit: make sure to set last_command_exit_value before
          calling the exit trap. Fixes bug reported by Greg Edwards
          <gedwards@ddn.com>

                                    2/9
                                    ---
lib/readline/{terminal.c,rlprivate.h}
        - _rl_region_color_on,_rl_region_color_off: functions to output the
          _rl_active_region_start_color and _rl_active_region_end_color
        - _rl_reset_region_color: function to encapsulate setting the region
          color to an arbitrary string, including doing memory management

lib/readline/display.c
        - putc_face: call _rl_region_color_on and _rl_region_color_off instead
          of _rl_standout_on and _rl_standout_off

lib/readline/terminal.c
        - _rl_init_terminal_io: initialize _rl_active_region_start_color and
          _rl_active_region_end_color from _rl_term_so and _rl_term_se,
          respectively; reset every time the terminal is changed
        - _rl_init_terminal_io: turn off the active region for a dumb terminal

lib/readline/bind.c
        - sv_region_{start,end}_color: call _rl_reset_region_color with the
          appropriate value for WHICH

                                   2/10
                                   ----
lib/readline/doc/{rluser.texi,readline.3},doc/bash.1
        - active-region-start-color,active-region-end-color: documented new
          bindable readline variables
        - enable-active-region: document using active-region-start-color to
          highlight the text in the region

                                   2/11
                                   ----
parse.y
        - read_token,read_token_word: make sure characters read by shell_getc
          are protected by appropriate calls to MBTEST when testing for shell
          metacharacters and operators

                                   2/14
                                   ----
builtins/shopt.def
        - set_compatibility_level: if the current compatibility level is outside
          the range of the compatNN options, just leave it alone when
          unsetting one of the options (which by definition was already
          unset). Fixes issue reported by Mihai Moldovan <ionic@ionic.de>

                                   2/16
                                   ----
lib/readline/search.c
        - rl_history_search_{pos,len,flags}: rename to have a leading `_'
        - _rl_history_search_pos: no longer static so other parts of readline
          can see it

lib/readline/rlprivate.h
        - _rl_history_search_pos: extern declaration

lib/readline/readline.c
        - readline_internal_teardown: don't run the undo list against the
          current history entry if the non-incremental search functions have
          set _rl_history_search_pos to it, since it doesn't reflect the
          current contents of the line buffer. Fixes issue reported by
          Andreas Schwab <schwab@linux-m68k.org>

lib/readline/misc.c
        - _rl_start_using_history: initialize _rl_history_search_pos to
          something invalid so it doesn't match where_history()

                                   2/17
                                   ----
lib/readline/callback.c
        - rl_callback_read_char: make sure _rl_eof_found is set to the value
          of eof before calling the deprep terminal function, so it can do
          different things based on whether the input code read EOF (or the
          user entered the EOF character). From a gdb discussion started by
          Andrew Burgess <aburgess@redhat.com> (still more to do, since this
          is not part of the public API)

                                   2/18
                                   ----
lib/readline/readline.h
        - RL_STATE_EOF: new readline state value; set when readline reads an
          EOF character on an empty line or a read returns an error
        - rl_eof_found: new public variable

lib/readline/rprivate.h
        - _rl_eof_found: renamed to rl_eof_found, so not declared here

lib/readline/{callback,readline}.c
        - RL_STATE_EOF: set appropriately when readline gets an EOF. Suggested
          by Andrew Burgess <aburgess@redhat.com>
        - RL_STATE_EOF: make sure it's not set when readline starts
        - rl_eof_found: set appropriately when readline gets an EOF

lib/readline/{callback,readline,rltty}.c
        - rl_eof_found: new name for _rl_eof_found

lib/readline/doc/rltech.texi
        - RL_STATE_EOF: document

                                   2/19
                                   ----
parse.y
        - parse_comsub: turn off parser state flags we don't want to inherit
          into this call to the parser (PST_REGEXP, PST_EXTPAT, PST_CONDCMD,
          PST_CONDEXPR for now). Fixes bug reported by konsolebox
          <konsolebox@gmail.com>

                                   2/23
                                   ----
findcmd.c,builtins/hash.def
        - replace calls to is_directory with file_isdir, which only performs a
          stat and doesn't do the eaccess call to check for an executable file

findcmd.c
        - find_in_path_element: takes a new RFLAGSP argument, an int * where
          the status flags for the returned pathname are returned; saves
          additional calls to stat/eaccess
        - search_for_command: get the returned flags from
          find_user_command_in_path so we don't need any additional calls to
          file_status after we find the command in $PATH

                                   2/24
                                   ----
doc/{bash.1,bashref.texi}
        - FUNCTIONS: some small changes to the description of local variables
          and dynamic scoping, with emphasis on how that affects `unset'
          behavior. Inspired by a discussion with
          Christoph Anton Mitterer <calestyo@scientia.net>

                                   2/25
                                   ----
examples/loadables/realpath.c
        - renamed -s option to -q to align with other versions
        - perform array assignment for `-a varname' even if -q option supplied  
        - renamed -S option to -s for Linux compatibility

                                   2/28
                                   ----
lib/readline/misc.c
        - _rl_free_saved_history_line: call rl_free_undo_list, saving and
          setting rl_undo_list to the saved history line's data, so the right
          call to _hs_replace_history_data happens and we don't end up with
          a pointer aliasing problem. Fixes core dump reported by 
          Andreas Schwab <schwab@linux-m68k.org>, but does not make his
          scenario equivalent to incremental search

                                    3/1
                                    ---
lib/readline/search.c
        - make_history_line_current: save the current line before replacing it
          with the found history entry using rl_maybe_save_line
        - noninc_dosearch: we don't want the saved history line, so free it
          after calling make_history_line_current
        - _rl_history_search_internal: call rl_maybe_replace_line after making
          changes to the line buffer with make_history_line_current so we can
          save the undo list we constructed before we set the history position

                                    3/2
                                    ---
lib/readline/display.c
        - expand_prompt: add missing piece to patch from 10/26/2021: if we are
          recalculating the number of invisible characters on the first line
          of the prompt, we need to update INVFL, even if we already set it
          when we hit the number of physical characters. This ends up being
          assigned to prompt_invis_chars_first_line, and is used in several
          subsequent calculations. Reported by
          Andreas Schwab <schwab@linux-m68k.org>

lib/readline/doc/{readline.3,rluser.texi},doc/bash.1
        - enable-bracketed-paste: add some language making it clearer that
          bracketed paste prevents the pasted text from being interpreted as
          editing commands. Suggested by Karl O. Pinc <kop@karlpinc.com>

                                    3/4
                                    ---
make_cmd.c
        - make_here_document: perform quote removal on the here-doc delimiter
          only if it's marked as quoted, which prevents quotes from inside a
          command substitution from being removed (they're supposed to begin a
          new quoting context) when the word itself isn't flagged as quoted
          (which means the body of the here-document gets expanded). You can't
          perform quote removal *and* expand the here-document lines. From an
          austin-group discussion back in early February

lib/sh/strvis.c
        - charvis -> sh_charvis; change caller
        - sh_charvis: now take an additional SLEN argument to avoid having to
          compute the string length every time; change callers
        - sh_charvis: add a utf-8 locale-specific check before calling
          COPY_CHAR_I (in practice, doesn't make any real difference)

                                   3/10
                                   ----
arrayfunc.c
        - convert_var_to_array: if we're being asked to create an associative
          array (flags & 2), and we have an existing variable that is not an
          assoc array (and not an existing indexed array), call
          convert_var_to_assoc to make it one

                                   3/11
                                   ----
jobs.c
        - wait_for: don't call get_tty_state() if readline is dispatching
          (RL_STATE_DISPATCHING) with the terminal settings changed
          (RL_STATE_TERMPREPPED), the same way we don't if we are running a
          command for programmable completion. Fixes bug with SIGINT reverting
          to the saved readline terminal settings reported by
          Markus Napierkowski <markus.napierkowski@cyberus-technology.de>

parse.y
        - decode_prompt_string: make sure the expansion of \w, \W, and \s
          are all run through sh_strvis before calling
          sh_backslash_quote_for_double_quotes or just through sh_strvis if
          we're not running the prompt string through word expansions.
          Fixes issue reported by Josh Harcome <joshharc@gmail.com> back
          in mid-January

                                   3/16
                                   ----
bashline.c
        - bash_quote_filename: if we have a word to complete that contains
          characters that introduce a word expansion, make sure the passed
          string does *not* exist as a filename before removing those
          characters from the set that must be backslash-quoted. See change
          from 1/1/2022

                                   3/18
                                   ----
lib/readline/search.c
        - make_history_line_current: don't free rl_undo_list or
          _rl_saved_line_for_history; don't unconditionally save the history
          line. This reverts some of the changes to support setting the
          history position in history-search-backward
        - rl_history_search_internal: only free the saved history line if we
          were the ones who created it

                                   3/21
                                   ----
lib/readline/nls.c
        - xmalloc.h: include for systems without setlocale(), so xfree has a
          prototype. Report and fix from András Kucsma <r0maikx02b@gmail.com>

lib/readline/search.c
        - _rl_history_search_internal: use previous-history/next-history to
          move to the found history line instead of directly calling
          history_set_pos. This makes the behavior more similar to incremental
          search
        - rl_history_search_internal: make sure to set rl_undo_list to the
          current history undo list around the calls to rl_get_previous_history
          or rl_get_next_history, in order to fool the call to
          maybe_replace_line they make

lib/readline/readline.c
        - _rl_executing_func: the currently-executing readline command function

lib/readline/rlprivate.h
        - _rl_executing_func: extern declaration

lib/readline/search.c
        - _rl_history_search_internal: removed (commented out) code that sets
          the current history entry to the found history entry, too much
          assumes that the current undo list should be applied to the current
          history entry (where_history())

                                   3/23
                                   ----
subst.c
        - parameter_brace_expand_word: if we have double-quoted ${*} or ${@},
          make sure we are setting W_HASQUOTEDNULL in the flags we return to
          the caller if we are returning QUOTED_NULL(word)
        - parameter_brace_expand_word: if we have a double-quoted associative
          array reference using `*' or `@', make sure we are setting
          W_HASQUOTEDNULL in the flags we return to the caller if we are
          returning QUOTED_NULL(word)
        - parameter_brace_expand: if we're using the `[:]+' word expansion
          operator, we need to note a quoted null string and pass the
          W_QUOTEDNULL flag back to the caller
        - expand_word_internal: make sure to return a QUOTED_NULL
          (word[0] == CTLNUL) back to the caller if HAD_QUOTED_NULL is set,
          regardless of whether or not we see a quoted dollar at. Fix for bug
          reported by Andreas Luik <andreas.luik@innovative-navigation.de>

arrayfunc.c
        - array_value_internal: fix typo and set estatep->type to ARRAY_INDEXED
          for indexed arrays

                                   3/31
                                   ----
lib/readline/{history.c,histlib.h}
        - _hs_at_end_of_history: convenience function to tell whether or not
          the current history position is at the end of the history list

                                    4/1
                                    ---
lib/readline/search.c
        - make_history_line_current: don't free rl_undo_list if it is equal to
          _rl_saved_line_for_history->data, since we will need to restore it
         later if we got it from a history entry. Fixes issue dating back to
         7/2021 and changes to _rl_free_saved_line_for_history, current issue
         reported by Andreas Schwab <schwab@linux-m68k.org>

                                    4/5
                                    ---
lib/readline/{complete,histfile,histsearch,isearch,terminal}.c
        - xfree: use instead of free

                                    4/7
                                    ---
configure.ac
        - bumped version to bash-5.2-beta

[bash-5.2-beta frozen]

                                    4/8
                                    ---
lib/readline/input.c
        - _rl_orig_sigset: need extern declaration if HAVE_SELECT is defined.
          From https://savannah.gnu.org/support/?110634

examples/loadables/seq.c
        - PRIdMAX: redefine if PRI_MACROS_BROKEN is defined.
          From https://savannah.gnu.org/support/index.php?110635

                                   4/11
                                   ----
configure.ac
        - BASH_FUNC_STRTOIMAX: replace strtoimax if the system doesn't provide
          a declaration in a standard header file. Uses new m4/strtoimax.m4.
          From https://savannah.gnu.org/support/index.php?110633

builtins/printf.def
        - getdouble: new function, parses string into `double' using strtod
        - printf_builtin: check for the `L' length modifier and use long
          doubles for the floating point conversion specifiers. If it's not
          supplied, use `double' when in posix mode (as posix specifies) and
          long double (if it's available, double if not) in default mode.
          From a report from Paul Eggert <eggert@cs.ucla.edu>

                                   4/12
                                   ----
lib/sh/oslib.c
        - bzero: update function signature to modern BSD version

                                   4/14
                                   ----
lib/sh/oslib.c
        - bcopy, gethostname, mkfifo: update function signatures to modern
          versions

                                   4/15
                                   ----
jobs.c,nojobs.c
        - wait_for_single_pid: if the pid or job argument is invalid -- isn't
          a child of this shell -- return 257, which is out of the range of
          valid 8-bit status values

execute_cmd.c
        - execute_pipeline: if wait_for_single_pid returns > 256, set it to
          127 (invalid process)

jobs.c
        - wait_for_background_pids: if wait_for_single_pid returns > 256, set
          the status we return in PS to 127 (what it was before)

builtins/wait.def
        - wait_builtin: if wait_for_single_pid returns > 256, treat it as an
          error and set pstat.pid to NO_PID
        - wait_builtin: if -p supplied, and we get to the end of the argument
          list with PSTAT.PID != NO_PID (which we assume means that the return
          value is set from PSTAT.STATUS), set the variable name to PSTAT.PID.
          From a report by Robert Elz <kre@munnari.OZ.AU>
        - wait_builtin: for compatibility with the netbsd sh, leave the variable
          name specified with `-p' unset if there are no PID arguments.
          From a report by Robert Elz <kre@munnari.OZ.AU>

                                   4/17
                                   ----
parse.y
        - xparse_dolparen: if (flags & SX_NOLONGJMP), don't call
          jump_to_top_level() on errors

bashline.c
        - bash_quote_filename: don't call quote_word_break_chars() unless we
          have word break chars initialized. Fixes bug reported by
          Sam James <sam@gentoo.org>

                                   4/18
                                   ----
pcomplete.c
        - gen_globpat_matches: call glob_filename with the GX_GLOBSTAR flag if
          the `globstar' shell option is enabled. From a report by
          Steve <bash@lonetwin.net>

lib/malloc/malloc.c
        - internal_free: remove the GLIBC21 code (!)
        - internal_free: make the code that tests against memtop and calls
          lesscore depend on USE_LESSCORE being defined, which it is by
          default

lib/malloc/imalloc.h
        - USE_LESSCORE: define

parse.y,shell.h
        - token_buffer_size and its corresponding saved value in the shell's
          parser state are now size_t instead of int

stringlib.c
        - strsub,strcreplace: use size_t instead of int for local length and
          indexing variables

lib/sh/zmapfd.c
        - zmapfd: use size_t instead of int for local length and indexing
          variables

lib/sh/zgetline.c
        - zgetline: use size_t instead of int for local length and indexing
          variables

                                   4/20
                                   ----
pcomplete.c
        - init_itemlist_from_varlist: free VLIST after assigning it from
          *SVFUNC and after we get the variable names and values out of it.
          Report from Robert E. Griffith <bobg@junga.com>

                                   4/25
                                   ----
redir.c
        - here_document_to_fd: if the shell compatibility level is bash-5.0 or
          earlier, use tempfiles for all here-documents and here-strings. From
          a bug-bash discussion started by Sam Liddicott <sam@liddicott.com>

                                   4/26
                                   ----
parse.y
        - parse_comsub: non-interactive shells exit on a syntax error while
          parsing the command substitution
        - parse_comsub: unset additional PARSER_STATE flags before calling
          yyparse(). Inspired by https://bugs.gentoo.org/837203; unsetting
          PST_COMPASSIGN is the fix for that bug
        - parse_string_to_word_list: use save_parser_state/restore_parser_state
          instead of saving pieces of the shell state in individual variables
        - parse_compound_assignment: use save_parser_state/restore_parser_state
          instead of saving pieces of the shell state in individual variables
        - parse_compound_assignment: unset additional PARSER_STATE flags before
          calling read_token(); set esacs_needed_count and expecting_in_token
          to 0 like in parse_comsub() since read_token can use them

                                   4/27
                                   ----
lib/sh/strvis.c
        - sh_charvis: changes to handle being compiled without multibyte support

                                   4/29
                                   ----
lib/readline/callback.c
        - rl_callback_read_char: don't set rl_eof_found unless eof is > 0,
          since it can be -3 if we need to read more input in a multi-key
          sequence. Report from Andrew Burgess <aburgess@redhat.com>

examples/loadables/Makefile.sample.in
        - new file, containing the rules to build the example shared object
        - includes Makefile.inc from wherever it's installed. Suggested by
          Robert E. Griffith <bobg@junga.com>

examples/loadables/Makefile.inc.in
        - remove rules that create the example shared object

                                   4/30
                                   ----
builtins/evalstring.c
        - parse_and_execute: check for terminating signals before returning,
          after any longjmp, to improve responsiveness and fix the -c code
          path before running any exit trap. Report from
          Emanuele Torre <torreemanuele6@gmail.com>

                                   5/17
                                   ----
builtins/suspend.def
        - suspend_builtin: the -f option now forces a suspend even if job
          control is not enabled. Inspired by a discussion with
          Robert Elz <kre@munnari.OZ.AU>

doc/{bash.1,bashref.texi}
        - suspend: updated description to include expanded -f behavior

                                   5/25
                                   ----
builtins/mkbuiltins.c
        - -includefile: new argument, specifies extern filename to insert
          into the #include statement in the structfile (builtins.c) and
          the filename in the comment in the extern file (builtext.h).
          From Alexander Kanavin <alex.kanavin@gmail.com> via
          https://savannah.gnu.org/patch/?10210

builtins/Makefile.in
        - builtins.c: change call to mkbuiltins to add -includefile option
        - builtins.c: change recipe to run all the commands in the same shell
          invocation
        - builtins.c: change recipe to specify new filenames in the call to
          mkbuiltins and move them onto builtins.c/builtext.h if the new ones
          are different; make the new filenames use the current make recipe
          shell pid in the filename ($$RECPID).
          Inspired by Alexander Kanavin <alex.kanavin@gmail.com> via
          https://savannah.gnu.org/patch/?10210

                                    6/2
                                    ---
builtins/common.c
        - builtin_find_indexed_array: new function, factored common code out
          of mapfile and read builtins to find an in-scope indexed array or
          create one 

builtins/common.h
        - builtin_find_indexed_array: extern declaration

builtins/{mapfile,read}.def
        - change callers to use builtin_find_indexed_array

variables.c
        - unbind_global_variable, unbind_global_variable_noref: new functions
          that remove variables from the global_variables table

lib/sh/shmatch.c
        - sh_regmatch: use unbind_global_variable_noref to make sure we act on
          the copy of BASH_REMATCH in the global scope all the time, ignoring
          any local variables that might exist. Tentative fix for memory leak
          report from Emanuele Torre <torreemanuele6@gmail.com>

doc/{bash.1,bashref.texi}
        - BASH_REMATCH: add caveat about making it a local variable

                                    6/6
                                    ---
print_cmd.c
        - print_redirection: if the redirectee for r_duplicating_output_word
          (r_duplicating_input_word) is 1 (0), don't print it; only print a
          non-default file descriptor number
        - print_redirection_list: remove the code that tries to temporarily
          translate a >&word redirection to >&word now that we won't print a
          non-default file descriptor number. Fixes issue with `declare -f' and
          function export reported by Namikaze Minato <lloydsensei@gmail.com>

                                   6/13
                                   ----
configure.ac
        - bumped version to bash-5.2-rc1

[bash-5.2-rc1 released]

                                   6/15
                                   ----
parse.y
        - parse_string_to_word_list: save the parser state before any state-
          changing functions like bash_history_disable(). Reported by
          Clark Wang <dearvoid@gmail.com>

                                   6/16
                                   ----
doc/bash.1
        - play tricks with the value of the zZ number register to refer to
          `bash(1)' instead of `above' or `below' when creating the builtins
          man page

                                   6/17
                                   ----
doc/{bash.1,bashref.texi}
        - wait: note that wait will return > 128 if interrupted by a signal.
          Reported by AA <aathan_github@memeplex.com>

execute_cmd.c
        - {execute_cond_node,execute_arith_command,eval_arith_for_expr}: make
          sure to reset this_command_name after running any DEBUG trap so the
          DEBUG trap doesn't overwrite it.
          Reported by Emanuele Torre <torreemanuele6@gmail.com>.
        - execute_select_command: set this_command_name to NULL after running
          any DEBUG trap like execute_for_command does

                                   6/23
                                   ----
test.c
        - three_arguments: when given [ ! ! arg ], make sure to advance POS
          after calling two_arguments to avoid a `too many arguments' error.
          Report from Steffen Nurpmeso <steffen@sdaoden.eu>

                                   6/27
                                   ----
subst.c
        - expand_word_internal: when expanding backquoted command substitution,
          call string_extract with the SX_REQMATCH flag (closing backquote
          required) only if the word flags don't contain W_COMPLETE,
          indicating that we're doing this for completion, probably to
          determine whether or not to append something to the word. Fixes bug
          reported by Emanuele Torre <torreemanuele6@gmail.com>.

                                    7/5
                                    ---
execute_cmd.c
        - execute_connection: treat a connector of '\n' the same as ';'

print_cmd.c
        - print_comsub: new function, sets flag noting we are printing a
          command substitution and calls make_command_string
        - make_command_string_internal: add '\n' to the ';' case; print command
          list with newline connector appropriately

parse.y
        - parse_comsub: call print_comsub instead of make_command_string
        - list1 production (part of compound_list): if a list is separated by
          newlines, and the parser is parsing a command substitution, make
          the connection command with a '\n' connector. Makes the text
          output of parse_comsub closer to the original source text. From a
          report from Martijn Dekker <martijn@inlv.org>

                                    7/6
                                    ---
doc/bash.1,lib/readline/doc/rluser.texi
        - complete: add note about arguments passed to command specified by
          `complete -C'; suggested by Mark Chandler <mcp@synq.so>

builtins/setattr.def
        - show_local_var_attributes: special-case `local -', since there is
          no `declare -' equivalent.
          Reported by Emanuele Torre <torreemanuele6@gmail.com>.
        - show_all_var_attributes: use `local -' when printing a variable named
          `-' at the current non-zero variable context

parse.y
        - shell_getc: if we are at the end of an alias, returning a space,
          make sure we mark the previous character as single-byte by modifying
          shell_input_line_property so the space we return is properly
          recognized. This would fail before if the last character of the
          alias was a multi-byte character. Reported by
          Vangelis Natsios <vnatsios@gmail.com>

                                   7/12
                                   ----
lib/readline/isearch.c
        - rl_display_search: don't call rl_redisplay_function before returning;
          rl_message already calls it. Reported by
          Frédéric Moulins <frederic@moulins.org>

configure.ac
        - bumped version to bash-5.2-rc2

                                   7/18
                                   ----
jobs.c
        - set_job_control: don't bother calling tcgetpgrp if shell_tty < 0,
          since it will just fail

variables.c
        - reset_local_contexts: new function, delete all context tables
          associated with shell functions and set variable_context to 0.
          Called when we want to stop executing in a shell function without
          going through the pop_context chain with its side effects

variables.h
        - reset_local_contexts: extern declaration

builtins/evalstring.c
        - parse_and_execute: call reset_local_contexts instead of setting
          variable_context to 0

eval.c
        - reader_loop: call reset_local_contexts in cases where the shell has
          longjmped for a fatal error and errexit is enabled (ERREXIT), but
          not for other cases, and especially not for the exit builtin,
          instead of just setting variable_context to 0. Fixes issue originally
          reported by Robert Stoll <robert.stoll@tegonal.com>

subst.c
        - pat_subst: implement sed-like behavior when presented with a null
          pattern that's anchored at the start or end of the string, or when
          presented with a null string: process the replacement string for `&'
          and `\&' and substitute in the result as before. Patch from
          Koichi Murase <myoga.murase@gmail.com>

                                   7/20
                                   ----

[bash-5.2-rc2 frozen]

                                   7/27
                                   ----
parse.y
        - reset_parser: set need_here_doc, esacs_needed_count, expecting_in_token
          all to 0, since jumping back to a top-level parse needs that
        - parse_comsub: make sure to reset expand_aliases and shell_eof_token
          if we're not going to exit immediately out of this function

                                   7/28
                                   ----
parse.y
        - parse_comsub: if the compatibility level is <= 51, set extglob while
          parsing the command substitution, so bad pattern errors can still be
          caught but valid patterns are let through and can be evaluated at
          runtime, when extglob may have been set. If it isn't set, it will
          still be a parser error when the command substitution is executed.
          Fixes report from Sam James <sam@gentoo.org> about gentoo scripts.
        - reset_parser: set extended_glob from global_extglob if the parser
          state includes PST_CMDSUBST
        - xparse_dolparen: set global_extglob but don't modify extended_glob,
          so parse errors can be caught before forking a child for command
          substitution, as part of word expansion, but after extglob may have
          been set by command execution (e.g., in a shell function)

                                    8/5
                                    ---
[bump version to bash-5.2-rc3]

                                    8/6
                                    ---
trap.c
        - run_pending_traps: move code from evalstring() so we call
          parse_and_execute() directly and handle any `return' invocations so
          we can restore the value of running_trap. Otherwise, if we longjmp
          past this function, we will think we're running a trap after we
          finish. Prompted by post from Koichi Murase <myoga.murase@gmail.com>

                                    8/9
                                    ---

lib/readline/nls.c
        - _rl_current_locale: private variable, stores the value of the
          LC_CTYPE locale category, as determined by _rl_init_locale; set
          to allocated memory in _rl_init_locale()
        - _rl_set_localevars: new function, code from _rl_init_eightbit that
          checks the current locale (passed as an argument) and sets the
          various locale-aware variables based on it. It accepts a second
          argument: FORCE. If non-zero, it means to restore the default "C"
          locale values if the locale is "C" or "POSIX", now that this
          function can be called multiple times
        - _rl_init_eightbit: now just calls _rl_init_locale and
          _rl_set_localevars
        - _rl_reset_locale: new function, checks whether our the locale has
          changed since we last called _rl_init_locale to set our internal
          idea of its value. If it has changed, call _rl_set_localevars with
          the new locale and a FORCE argument of 1 to change the
          locale-dependent variables.

lib/readline/rlprivate.h
        - _rl_reset_locale: extern declaration

lib/readline/readline.c
        - rl_initialize: call _rl_reset_locale instead of _rl_init_locale so
          the internal readline variables get set when we move from a non-
          multibyte locale ("C") to a multibyte one ("en_US.UTF-8"). Report
          from Alan Coopersmith <alan.coopersmith@oracle.com>

                                   8/16
                                   ----
lib/sh/setlinebuf.c
        - sh_setlinebuf: allocate buffers for line-buffering stdout and stderr
          only once, the first time it is requested. Only allocate memory if
          we're using setvbuf (we usually are). Double the buffer size to 2016
          if we're using the bash malloc. Otherwise, let stdio handle it.

                                   8/17
                                   ----
builtins/exec.def
        - exec_builtin: make sure to initialize orig_job_control in case the
          command is not found by search_for_command. Report and fix from
          Xiami <i@f2light.com>

[bash-5.2-rc3 frozen]

                                   8/27
                                   ----
parse.y
        - parse_comsub: restore extended_glob to a local copy (local_extglob)
          only if we changed it; a safer way to do it. Fixes extglob change
          issue reported by Kerin Millar <kfm@plushkava.net>
        - cond_term: restore extended_glob to a local copy; safer than using
          global_extglob, which we will reserve for error recovery

                                   8/30
                                   ----
parse.y
        - parse_comsub: don't clear the pushed string list; we might need it to
          consume additional input to satisfy this command substitution. When
          we restore the parser state, don't restore the pushed string list in
          case we used it. From
          https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1018727
        - parse_comsub: don't modify extended_glob if parser_state includes
          PST_EXTPAT, in which case we've already set extended_glob and
          global_extglob appropriately. Only matters in compatibility mode.

                                   8/31
                                   ----
subst.c
        - parameter_brace_transform: make sure we return an error if *xform
          is '\0'. Report from Ivan Kapranov <koltiradw@yandex.ru>

                                    9/7
                                    ---
[bump version to bash-5.2-rc4]

                                    9/8
                                    ---
[bash-5.2-rc4 frozen]

                                   9/20
                                   ----
lib/readline/history.c
        - replace_history_entry: check for a NULL timestamp before trying to
          copy it. Report from nov.ondrej@gmail.com

                                   9/23
                                   ----
[bash-5.2 frozen]

                                   9/26
                                   ----
[bash-5.2 released]

                                   9/27
                                   ----
mailcheck.c
        - time_to_check_mail: don't bother if we're in the middle of readline
          completion or command dispatching.
          From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1019462

lib/readline/display.c
        - rl_forced_update_display: use memset to clear out visible_line
          instead of trying to use a loop; line_size is the size.
          Report from <srobertson@peratonlabs.com>

print_cmd.c
        - indirection_level_string: use MBRLEN and an initialized mbstate_t
          object to avoid altering an internal mbstate_t.
          From Koichi Murase <myoga.murase@gmail.com>

subst.c
        - string_extract_verbatim: use an explicit mbstate_t object and pass
          it to MBRLEN and mbrtowc to avoid altering the state that
          ADVANCE_CHAR is using.
          From Koichi Murase <myoga.murase@gmail.com>
        - setifs: use an explicit mbstate_t object and pass it to MBRLEN so
          to avoid altering an internal mbstate_t.
          From Koichi Murase <myoga.murase@gmail.com>

builtins/printf.def
        - asciicode: use an explicit mbstate_t object and pass it to mbrtowc
          to avoid using an incorrect internal mbstate_t
          From Koichi Murase <myoga.murase@gmail.com>

lib/sh/{mbscasecmp,mbscmp}.c
        - mbscasecmp,mbscmp: use different mbstate_t objects for the different
          strings so they don't affect each others' intermediate mbstate.
          From Koichi Murase <myoga.murase@gmail.com>

                                   9/28
                                   ----
execute_cmd.c
        - execute_command_internal: if executing a (command) subshell, restore
          the value of line_number from save_line_number before returning early
          due to being a non-terminal pipeline element.
          From https://savannah.gnu.org/support/index.php?110714

                                   9/30
                                   ----
subst.c
        - expand_array_subscript: make sure to pass a non-NULL first argument
          to sh_backslash_quote. Report from Emanuele Torre <torreemanuele6@gmail.com>,
          patch from Koichi Murase <myoga.murase@gmail.com>

                                   9/30
                                   ----
jobs.c
        - cleanup_dead_jobs: delete dead foreground jobs we won't notify the
          user about (those not killed by a signal or killed by SIGINT/SIGPIPE).
          From a report from Koichi Murase <myoga.murase@gmail.com>
        - wait_for_any_job: never return a foreground job, even when requested
          by pid, if it's in the jobs list
          Report and fix from Koichi Murase <myoga.murase@gmail.com>

m4/strtoimax.m4
        - BASH_FUNC_STRTOIMAX: fix logic inversion of result; we should be
          replacing the function if the tests show we *don't* have a working
          version. Report from Emanuel Haupt <ehaupt@FreeBSD.org>

                                   10/4
                                   ----
lib/readline/nls.c
        - _rl_init_locale: cope with setlocale returning NULL, make sure we
          set up a default value for LC_CTYPE. Report from
          https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021109

lib/readline/{input.c,rlprivate.h}
        - fixes for compiling on w64-mingw32

                                   10/5
                                   ----
parse.y
        - xparse_dolparen: save and restore extended_glob using local_extglob
          in the same way that parse_comsub does. Fixes compat issue reported in
          https://bugs.gentoo.org/873931 and by Kerin Millar <kfm@plushkava.net>

                                   10/6
                                   ----
subst.c
        - extract_dollar_brace_string: keep a stack of dolbrace_state values
          to handle nested expansions. Report from
          Antoine <bug-bash@glitchimini.net>

                                   10/7
                                   ----
builtins/{shopt.def,common.h}
        - extglob_flag: new variable to hold the state of the `extglob' option;
          initialized to EXTGLOB_DEFAULT like extended_glob
        - shopt_set_extglob: new function to set extended_glob to the right
          value for the rest of the shell

parse.y
        - reset_parser: set extended_glob to extglob_flag, which is only
          changed by shopt, remove global_extglob
        - parse_comsub,parse_cond_command,xparse_dolparen: no longer use
          global_extglob

execute_cmd.c
        - execute_cond_node: reset extended_glob to the value of extglob_flag,
          since we're executing a command here

                                   10/8
                                   ----
parse.y
        - save_dstart: when we set the value of function_dstart, save the old
          value in save_dstart (read_token, read_token_word); restore it in
          the grammar production after calling make_function_def. This gives
          you correct line numbers for one level of function nesting.
          Report from Daniel Castro <danicc097@gmail.com>

                                   10/10
                                   -----
execute_cmd.c
        - shell_execve: rearrange code so that we check for a bad interpreter
          before printing a generic ENOENT error message. Report from
          Kirill Elagin <kirelagin@gmail.com>

                                   10/12
                                   -----
lib/readline/callback.c
        - CALLBACK_READ_RETURN: add an inlined call to RL_CHECK_SIGNALS so we
          can handle any signals that arrived before we restored the calling
          application's signal handlers. From a gdb dicussion with
          Simon Marchi <simon.marchi@polymtl.ca>

                                   10/12
                                   -----
variables.c
        - pop_var_context: flag an internal error for shell_variables not
          pointing to a function context only if we haven't already flushed
          all the local contexts and reset variable_context. This can happen
          if errexit is enabled and we're going to be exiting the shell, but
          we're running unwind-protects on our way out. Report from
          Xavier Delaruelle <xavier.delaruelle@gmail.com>

                                   10/13
                                   -----
sig.c
        - kill_shell: broke the code that resets the signal disposition to the
          default and sends a terminating signal to the shell into a separate
          function
        - termsig_handler: set handling_termsig to terminating_signal and make
          it file-scope so other functions know we're handling a terminating
          signal and are about to exit, and which signal it is (latter not used
          yet)
        - termsig_sighandler: if we get a fatal signal while we're handling a
          fatal signal, kill ourselves with the second fatal signal immediately.
          Fixes issue reported by Andreas Schwab <schwab@suse.de>

execute_cmd.c
        - execute_case_command: call CHECK_TERMSIG after the call to strmatch,
          since gmatch will return FNM_NOMATCH if there's a pending terminating
          signal and we don't want incorrect results

subst.c
        - pat_subst: make sure REP is non-NULL before calling savestring on it.
          Report from Justin Wood (Callek) <callek@gmail.com>

                                   10/14
                                   -----
builtins/{shopt.def,common.h}
        - expand_aliases: split into a variable that holds the current state
          of alias expansion (expand_aliases) and a variable that reflects the
          global option value (expalias_flag), make sure expand_aliases is set
          appropriately by shopt

shell.c,execute_cmd.c,general.c
        - expand_aliases: make sure expand_aliases and expalias_flag always
          agree

parser.h
        - PST_STRING: new parser flag, set when parsing a string to a command
          or word list

parse.y
        - reset_parser: if we're parsing a command substitution or a string,
          and need to restore expand_aliases, make sure it's set to the value
          of expalias_flag.
          Fixes SIGINT during interactive command substitution parsing bug
          reported by feng xiangjun <fengxj325@gmail.com>
        - parse_string_to_word_list,parse_string_to_command: make sure to set
          PST_STRING in parser_flags since we're resetting expand_aliases

                                   10/17
                                   -----
print_cmd.c
        - print_function_def, named_function_string: if the function doesn't
          have any here-documents, unset was_heredoc after printing the
          closing brace so we can add a separator if there is another command
          following the function definition. Fixes bug with multiple function
          definitions and here-documents reported by D630 <d630@posteo.net>
        - make_command_string_internal: if we're printing a command
          substitution, make sure to preserve newlines in the comsub so we
          avoid problems with re-parsing function defs or command substitutions
          containing multiple compound commands that need to be separated
          by newlines, but don't double them up

parse.y
        - P_ARITH: new parse_matched_pair flags value; used to jump to
          parse_comsub if we see a $( inside a $(( )), $[ ], or (( ))
        - parse_matched_pair,parse_comsub,parse_arith_command,read_token_word:
          make sure to call parse_matched_pair with P_ARITH if we're parsing
          an arithmetic command or expansion
        - parse_matched_pair: if we see $( inside a call with P_ARITH in the
          flags argument, jump to parse_dollar_word and call parse_comsub to
          parse it. The rest of the steps assume that parse_comsub has
          expanded aliases (or not) appropriately. Fixes bug 2 from
          https://bugzilla.redhat.com/show_bug.cgi?id=2134307

                                   10/18
                                   -----
builtins/evalstring.c
        - parse_and_execute: we play tricks in the parser and in command_substitute
          to turn expand_aliases on and off depending on the comsub parser
          pass and whether or not we're in posix mode. Since this should only
          matter for parsing, when we're processing a command substitution, we
          set expand_aliases to the global flag value after parsing the
          command and before executing it, and restore it if the global flag
          value isn't changed during execution. Fixes bug 1 from
          https://bugzilla.redhat.com/show_bug.cgi?id=2134307

command.h
        - PF_BACKQUOTE: new flag value, only used by command_substitute to
          differentiate between `` and $() forms. The former does not have
          aliases expanded by parse_comsub in posix mode, so needs to expand
          them in parse_and_execute like default mode

subst.c
        - command_substitute: don't modify expand_aliases if PF_BACKQUOTE is
          included in flags, since aliases haven't been expanded in the
          command string (it was run through parse.y:parse_matched_pair())
        - expand_word_internal: pass PF_BACKQUOTE to command_substitute() if
          expanding a `` command substitution

                                   10/20
                                   -----
parse.y
        - yylex: return YYUNDEF as current_token if read_token returns < 0.
          Fixes parser reset issue reported by Todd Stein <toddbstein@gmail.com>
          in https://savannah.gnu.org/support/index.php?110745

subst.c
        - ARITH_EXP_CHARS: chars that are special and trigger expansion in
          arithmetic expressions, EXP_CHARS without `<' and `>'. Fixes bug
          reported by Glenn Jackman <glenn.jackman@gmail.com>

execute_cmd.c
        - retain_fifos: replace executing_list (which is still present) as the
          indicator of whether or not to save and restore the FIFO list around
          a call to execute_command_internal/execute_command; it's more
          descriptive and can be used elsewhere
        - execute_for_command: set retain_fifos so we don't unlink the fifo
          list until the for command completes. Fixes issue reported in
          https://savannah.gnu.org/support/index.php?110743

lib/readline/xmalloc.c
        - memory_error_and_abort: add `const' qualifiers to the argument. Fix
          from Markus Elfring <Markus.Elfring@web.de>

                                   10/24
                                   -----
general.c
        - check_binary_file: check the first two lines for NULs if the first
          line begins with a `#!'; otherwise check the first. From a discussion
          and patch in https://savannah.gnu.org/support/?110744
          (larsh@apache.org)

parse.y
        - parse_matched_pair: set PST_NOERROR if we read to EOF without finding
          a closing match and call parser_error; avoids redundant error
          message

lib/sh/uconvert.c
        - uconvert: RETURN: if ipart (integer part) is 0, but upart (fractional
          part) is non-zero, multiply upart by mult so we don't lose the sign
          for values in the range (-1, 0]. From a report by
          izabera <izaberina@gmail.com>

execute_cmd.c
        - execute_in_subshell: check for terminating signals before we return
          to our caller, which will immediately exit, and before running any
          exit trap (since termsig_handler will run any exit trap). Fixes bug
          reported by Andrew Neff <andrew.neff@visionsystemsinc.com>

                                   10/26
                                   -----
lib/readline/complete.c
        - rl_filename_completion_function: if the application doesn't supply
          any directory hook functions, we need to handle the case where we
          dequoted users_dirname and also tilde-expanded dirname. We choose
          to tilde expand users_dirname rather than call the application
          dequoting function again. Report and patch from
          Stefan H. Holek <stefan@epy.co.at>

                                   10/27
                                   -----
execute_cmd.c
        - execute_in_subshell: call procsub_clear in addition to clear_fifo_list,
          since none of these process substitutions are children of this new
          subshell

jobs.c
        - wait_for_background_pids: call procsub_waitpid on the last procsub
          created as long as it's the same as $!, then call reap_procsubs to
          clean up the procsub list. Don't call procsub_waitall. Report from
          Oguz İsmail Uysal <oguzismailuysal@gmail.com>

                                   10/31
                                   -----
expr.c
        - expr_streval: explicitly permit `@' and `*' as associative array
          subscripts if the shell compatibility level is greater than 51.
          Prompted by report from Corey Hickey <bugfood-ml@fatooh.org>

subst.c
        - string_list_pos_params, param_expand: make sure that $* is treated
          the same as "$*" in here-document bodies that are being expanded.
          From https://lists.gnu.org/archive/html/bug-bash/2022-09/msg00002.html

                                   11/1
                                   ----
lib/readline/readline.c
        - readline_internal_char: save and restore the value of _rl_top_level
          around our use of setjmp, even though it doesn't matter in most
          cases. Report from sparrowhawk996@gmail.com that it causes crashes
          in some obscure callback-mode cases

lib/readline/isearch.c
        - _rl_isearch_dispatch: if we end the search and stuff characters back
          to be read again, decrement the current key sequence index by 2 so
          we don't have duplicate characters in the sequence

lib/readline/misc.c
        - rl_digit_argument: call _rl_del_executing_keyseq after rl_execute_next

                                   11/3
                                   ----
builtins/setattr.def
        - show_localname_attributes: special-case "-" local variable, since
          there is no `declare -' equivalent.
          Reported by Emanuele Torre <torreemanuele6@gmail.com>.

                                   11/4
                                   ----
lib/sh/tmpfile.c
        - sh_mktmpname,sh_mktmpfd: use get_urandom32() instead of random() if
          we're not using mktemp or mkstemp and the system provides the
          appropriate support

trap.c
        - trap_variable_context: new variable, set to variable_context every
          time a trap string runs (that is, every time running_trap is set to
          a value > 0) in _run_trap_internal, run_exit_trap, run_pending_traps

trap.h
        - trap_variable_context: extern declaration

builtins/common.c
        - get_exitstat: if the `return' builtin is running, we are running a
          trap (but not the DEBUG trap), and the return would cause the trap
          string to complete (variable_context == trap_variable_context, so
          we haven't executed another shell function), use the last command
          exit value as the return status. POSIX interp 1602, from
          https://www.austingroupbugs.net/view.php?id=1602

                                   11/4
                                   ----

lib/readline/display.c
        - local_prompt_invis_chars: new array variable, similar to
          local_prompt_newlines, that keeps track of the number of invisible
          characters on each line of the prompt string. Use in WRAP_OFFSET
          macro with eye to using in W_OFFSET as well. Used for the case where
          the last line of the prompt is not the last line with invisible
          characters. Can use this in more calculations replacing wrap_offset
          and prompt_invis_chars_first_line going forward. Inspired by report
          from https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1018851
        - update_line: use local_prompt_invis_chars to set _rl_last_c_pos
          correctly when on a non-terminal prompt line that contains
          invisible characters

                                   11/7
                                   ----
subst.c
        - get_var_and_type: allocate new memory for *valp and return it if the
          type is VT_ARRAYMEMBER. The callers -- all of which treat this case
          the same as VT_VARIABLE -- will free appropriately. Fixes problems
          with using parameter operations like ## on dynamic array variables,
          reported by Ivan Kapranov <koltiradw@yandex.ru> back on 8/31/2022

expr.c
        - change some error messages to make it clearer these are arithmetic
          syntax errors. These will require new translations.

test.c
        - integer_expected_error: change the message to remove `expression',
          since this is only called for the `test' builtin, where TEST_ARITHEXP
          is not in FLAGS. This will require a new translation.
          Reported by Emanuele Torre <torreemanuele6@gmail.com> back on
          6/15/2022

                                   11/10
                                   -----
builtins/read.def
        - reset_timeout: when a timer expires, make sure to cancel any
          readline timeout as well with rl_clear_timeout().
          From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1023776

                                   11/11
                                   -----
builtins/reserved.def
        - !: add short help text

lib/readline/complete.c
        - make_quoted_replacement: if readline found quote characters anywhere
          in the filename, but is not completing on an unclosed quoted string,
          and there is an application filename quoting function, let that
          function quote the filename if necessary

bashline.c
        - COMPLETE_DQUOTE2: new completion quoting style define
        - bash_expand_filename: new function, runs a filename passed to it
          through word expansion, suppressing command and process substitution
          and returns the result (in new memory if it's different than the
          filename argument)
        - bash_quote_filename: if the return value from bash_check_expchar is
          `$' or ``', expand the filename and if it contains characters that
          should be quoted, set the quoting style to COMPLETE_DQUOTE2
        - bash_quote_filename: if the completion quoting style is COMPLETE_DQUOTE2,
          use sh_mkdoublequoted to put double quotes around the entire
          unexpanded filename instead of using sh_double_quote, which will
          backslash-quote any `$'. This is a start at preserving user-supplied
          quotes if the (expanded) completed filename requires them. From
          reports by Peng Yu <pengyu.ut@gmail.com> in 5/2020 and
          Pedro Gimeno <pgba-da0a@personal.formauri.es> in 6/2021

                                   11/14
                                   -----
parse.y
        - report_syntax_error: if word_top is set and we reach EOF, report the
          starting line number in the error message. From a patch from
          L A Walsh <bash@tlinx.org> and Manuel Reiter <manuel.reiter@dwd.de>
          back in 9/2018
        - MAX_CASE_NEST: doubled to 256, renamed to MAX_COMPOUND_NEST
        - read_token_word: add `if', `while', and `until' to the set of
          compound commands that use WORD_TOP and WORD_LINENO (with
          corresponding changes to grammar productions)
        - [grammar]: changed check to decrement WORD_TOP to >= 0 since we
          start at -1 and we want to decrement back to -1 when all loops are
          closed

builtins/jobs.def
        - jobs_builtin: call notify_and_cleanup after displaying the status of
          jobs to implement POSIX requirement that `jobs' remove terminated
          jobs from the jobs list
          https://pubs.opengroup.org/onlinepubs/9699919799/utilities/jobs.html#tag_20_62

                                   11/15
                                   -----
lib/sh/input_avail.c
        - include signal.h unconditionally, we need it for HAVE_SELECT and
          HAVE_PSELECT
        - nchars_avail: make sure we declare and use readfds and exceptfds if
          we have pselect or select available

lib/readline/input.c
        - rl_gather_tyi,rl_getc: need to declare and use readfds and exceptfds
          if HAVE_PSELECT or HAVE_SELECT is set. Report from
          Henry Bent <henry.r.bent@gmail.com>, fixes from
          Koichi Murase <myoga.murase@gmail.com>

                                   11/16
                                   -----
lib/sh/ufuncs.c
        - quit.h: include unconditionally for declaration of sigemptyset even
          if HAVE_SELECT is not defined

lib/sh/timers.c
        - USEC_PER_SEC: make sure it's defined even if HAVE_SELECT is not

lib/glob/sm_loop.c
        - BRACKMATCH: if an equivalence class does not match, and the next
          character following the class is a `]', treat that as the end of
          the bracket expression.
          Report and fix from Koichi Murase <myoga.murase@gmail.com>
        - GMATCH: if the current character in the string is a `/' and the
          current element in the pattern is a bracket expresion, and the FLAGS
          include FNM_PATHNAME, return FNM_NOMATCH immediately. A bracket
          expression can never match a slash.
          Report and fix from Koichi Murase <myoga.murase@gmail.com>
        - BRACKMATCH: if we encounter a <slash> in a bracket expression, either
          individually or as part of an equivalence class, nullify the bracket
          expression and force the `[' to be matched as an ordinary
          character

                                   11/17
                                   -----
lib/glob/sm_loop.c
        - BRACKMATCH: if a slash character appears as the first character
          after a non-matching character class or equivalence class, treat
          the bracket as an ordinary character that must be matched literally
        - BRACKMATCH: if a slash character appears as the second character
          of a range expression, treat the bracket as an ordinary character
        - BRACKMATCH: if a slash character appears in the portion of a
          bracket expression that already matched, treat the bracket as an
          ordinary character
          Updates from Koichi Murase <myoga.murase@gmail.com>
        - BRACKMATCH: if a range expression is incomplete (no end char),
          treat the bracket as an ordinary character

                                   11/18
                                   -----
doc/bashref.texi
        - Reporting Bugs: add mention of the Savannah project page. Suggested
          by Loïc Yhuel <loic.yhuel@gmail.com>

                                   11/20
                                   -----
builtins/common.h
        - SEVAL_NOOPTIMIZE: new flag for parse_and_execute: means don't try to
          optimize forks out of any simple or conditional commands

builtins/evalstring.c
        - parse_and_execute: if FLAGS includes SEVAL_NOOPTIMIZE, don't try to
          call can_optimize_connection to optimize away forks from AND_AND or
          OR_OR commands

builtins/eval.def,trap.c,parse.y,jobs.c
        - parse_and_execute: include SEVAL_NOOPTIMIZE in any calls to
          parse_and_execute. Fixes bug reported by
          Frode Nordahl <frode.nordahl@canonical.com>

                                   11/21
                                   -----
lib/readline/readline.c
        - readline_initialize_everything: use xmalloc to initialize
          rl_executing_keyseq, since we use xrealloc to reallocate it and
          don't check it for NULL anywhere

subst.c
        - parameter_brace_expand_word: make sure to update *ESTATEP and pass
          ES back to the caller even if array_value returns NULL. Fixes
          memory leak referencing unset associative array elements reported
          by Ralf Oehler <Ralf@Oehler-Privat.de>; fix from
          Koichi Murase <myoga.murase@gmail.com>

                                   11/22
                                   -----
lib/glob/sm_loop.c
        - BRACKMATCH: if a backslash appears before a slash in a bracket
          expression, treat the whole thing as literal and try to match the
          open bracket
        - BRACKMATCH: if a bracket expression ends in an unquoted backslash,
          try to match the left bracket literally and go on. More discussion with
          Koichi Murase <myoga.murase@gmail.com>

execute_cmd.c
        - execute_in_subshell: don't try to optimize away forks in the command
          if the subshell command is being timed or its return value is being
          inverted. Report from Dabrien 'Dabe' Murphy <dabe@dabe.com>

                                   11/23
                                   -----
lib/readline/complete.c
        - __WIN32__: remove uses of this preprocessor symbol, use _WIN32

lib/readline/rldefs.h
        - Don't define NEW_TTY_DRIVER on _WIN32. Fix from
          sparrowhawk996@gmail.com

include/posixselect.h
        - include "posixtime.h" instead of <sys/time.h> so the right guards
          are present

builtins/read.def
        - read_builtin_timeout: make sure we don't try to call shtimer_select
          if HAVE_SELECT isn't define; it won't be compiled in

include/stdc.h
        - restrict: make sure we have a definition if __STDC__ is not defined

include/posixtime.h,lib/sh/gettimeofday.c
        - gettimeofday: make sure the function signature matches POSIX by
          adding `restrict'

                                   11/25
                                   -----
include/posixselect.h
        - don't try to define HAVE_SELECT at all if _WIN32 is defined

lib/readline/kill.c
        - define WIN32_LEAN_AND_MEAN for the windows-specific paste function

lib/readline/rlprivate.h
        - _rl_timeout_select: only include declaration if HAVE_SELECT or
          HAVE_PSELECT are defined

                                   11/28
                                   -----
lib/readline/input.c
        - rl_gather_tyi: call rl_input_available_hook after FIONREAD test,
          let the application hook into whether or not there are characters
          to read

execute_cmd.c
        - execute_function: if the maximum function nesting level is exceeded,
          run the unwind-protects before jumping back to top level. Report
          from felix <felix@f-hauri.ch>

variables.c
        - find_variable_nameref_for_create,find_variable_nameref_for_assignment:
          handle find_variable_nameref returning &nameref_maxloop_value, return
          NULL and print a warning message in that case
        - find_variable_nameref: return &namref_maxloop_value instead of NULL
          if the number of resolution cycles exceeds NAMEREF_MAX; change
          callers to print a new error message in this case; no other change
          in behavior. From a 4/2020 suggestion from Andrej Podzimek
          <andrej@podzimek.org>
        - find_variable_nameref_context, find_nameref_at_context,
          find_variable_last_nameref_context: make sure to return
          &nameref_maxloop_value consistently and handle getting it as a
          return value from other functions

                                   11/29
                                   -----
lib/readline/display.c
        - _rl_update_final: if there is only one line (_rl_vis_botlin == 0)
          and that line is empty (botline_length == 0), assume there is no
          prompt and the line has no contents, so output the CR/LF to indicate
          that the newline has been read. From a report from
          Kevin Pulo <kev@pulo.com.au>

                                   11/30
                                   -----
builtins/evalstring.c
        - parse_and_execute: if we are executing the eval builtin, and the
          return status from the command is suppressed (builtin_ignoring_errexit),
          set CMD_IGNORE_RETURN in the parsed command's flags. From a report
          from Tycho Kirchner <tychokirchner@mail.de>

                                   12/1
                                   ----
lib/glob/sm_loop.c
        - PARSE_SUBBRACKET: a reworked PARSE_COLLSYM, generalized to handle
          [:, [=, and [. special bracket expressions
        - BRACKMATCH: change to use PARSE_SUBBRACKET consistently to parse
          [:, [=, and [. special bracket expressions
        - PATSCAN: takes new FLAGS arg, changed all callers to just pass the
          flags they get through to PATSCAN
        - PATSCAN: call PARSE_SUBBRACKET for [:, [=, and [. to treat them
          consistently (uses FLAGS argument here)
        - PATSCAN: handle FNM_NOESCAPE appearing in FLAGS argument
        This set of fixes contributed by Koichi Murase <myoga.murase@gmail.com>

lib/glob/{glob,gmisc}.c
        - PATSCAN: change all callers to add extra flags arg of 0

doc/{bash.1,bashref.texi}
        - trap description: replace ARG with ACTION
        - clarify the language describing what trap without arguments and
          trap -p without arguments display 
        - clarify that trap in non-interactive shells does not allow signals
          that were ignored at shell start to be trapped; interactive shells
          allow this
        - trap: add missing command types to the description of when the
          DEBUG trap is executed

builtins/trap.def
        - LONG_DOC: replace ARG with ACTION
        - make it clear that trap and trap -p without arguments display a
          information about specified signals, but in a form that may be
          reused as shell input

                                   12/5
                                   ----
pcomplete.c
        - compgen_compspec: new flag saying whether or not we're running via
          the compgen builtin or via programmable completion: set to 0
          every time gen_progcomp_completions runs, set to 1 in
          gen_compspec_completions if this_shell_builtin == compgen_builtin
        - gen_shell_function_completions: call rl_clear_signals and
          rl_set_signals so the shell's signal handlers are active when
          running shell functions to generate completions. We try to do it
          only when programmable completion, not the compgen builtin, is active.
          Idea from Koichi Murase <myoga.murase@gmail.com>, fixes bug
          reported in 9/22

sig.c
        - sigint_sighandler, termsig_sighandler: since these can now be called
          during programmable completion, we need to set the readline signal
          event hook if the readline state includes RL_STATE_DISPATCHING or
          RL_STATE_COMPLETING, since we can't rely on RL_STATE_SIGHANDLER
          being set and we want to call throw_to_top_level here
        - throw_to_top_level: if the shell is interactive, before calling
          bashline_reset (which zeroes rl_signal_event_hook), call
          rl_cleanup_after_signal if we think readline hasn't called it
          already

                                   12/9
                                   ----
configure.ac
        - add "LOCAL_LDFLAGS = -rdynamic" for freebsd/openbsd/netbsd. Reported
          by Christian Weisgerber <naddy@mips.inka.de>

                                   12/12
                                   -----
subst.c
        - parameter_brace_expand_length: handle namerefs with values that are
          valid length expansion expressions but invalid identifiers. From
          ed7-aspire4925@hotmail.com via https://savannah.gnu.org/support/?110799

                                   12/13
                                   -----
subst.c
        - extract_heredoc_dolbrace_string: fix off-by-one error after calling
          extract_command_subst and extract_process_subst that caused it to
          copy one too many parsed characters. Fix for bug reported by
          Norbert Lange <nolange79@gmail.com>

                                   12/14
                                   -----
execute_cmd.c
        - execute_cond_node: if a regular expression fails to compile, print
          an error message. Report from Emanuele Torre <torreemanuele6@gmail.com>
          back on 6/15/2022

trap.c
        - trap_variable_context -> trap_return_context, initialize from
          funcnest + sourcenest instead of variable_context so we handle
          shell function execution and `./source', both of which can use
          `return'. Idea from Koichi Murase <myoga.murase@gmail.com>

builtins/common.c
        - get_exitstat: compare trap_return_context against funcnest+sourcenest,
          since that's how it's initialized now

lib/readline/readline.c
        - readline_internal_charloop: if we're not using the callback interface,
          don't restore _rl_top_level from olevel, since we will just be going
          around the loop again and will potentially need to use it multiple
          times. Report from Emanuele Torre <torreemanuele6@gmail.com>

                                   12/15
                                   -----
shell.h
        - EX_UTILERROR: new generic special builtin return status to indicate a
          POSIX utility error that should cause a non-interactive shell to abort

execute_cmd.c
        - builtin_status: translate EX_UTILERROR to EXECUTION_FAILURE

builtins/set.def
        - unset_builtin: return EX_UTILERROR if posix_utility_error is set;
          set it when trying to unset a non-identifier (variable) or a
          non-unsettable or readonly variable

                                   12/16
                                   -----
subst.c
        - de_backslash: now takes a second argument with the current quoting
          flags
        - de_backslash: if the quoting flags include Q_HERE_DOCUMENT and the
          shell is in posix mode, remove backslashes quoting double quotes

subst.h
        - de_backslash: update extern declaration

lib/readline/histexpand.c
        - history_expand_internal,get_history_word_specifier,get_subst_pattern,
          hist_error,history_find_word,hist_string_extract_single_quoted:
          now take const char * string arguments

lib/readline/mbutil.c
        - _rl_get_char_len,_rl_adjust_point,_rl_find_next_mbchar_internal,
          _rl_find_next_mbchar,_rl_find_prev_mbchar,_rl_find_prev_mbchar_internal,
          _rl_test_nonzero,_rl_find_prev_utf8char,_rl_is_mbchar_matched,
          _rl_compare_chars,_rl_char_value: take const char * string arguments

                                   12/17
                                   -----
builtins/umask.def
        - parse_symbolic_umask: add missing POSIX pieces:
                o `action' of ugo, meaning to copy portions of initial mask
                o multiple `op' specs as part of the action string (`u=r-w')
                  (resets perm)
                o missing perm characters Xst in action string
                o default `who' equivalent to `a' instead of fixing up later

                                   12/19
                                   -----
builtins/type.def
        - if -a and -P are both supplied, look in the command hash table but
          continue and perform a $PATH search even if the NAME is hashed.
          From a report by Adam Vodopjan <adam.vodopjan@gmail.com>

doc/{bash.1,bashref.texi}
        - type: update description to fix it to what the code actually does

builtins/set.def
        - set_edit_mode: don't run with_input_from_stdin or with_input_from_stream
          unless command_execution_string is NULL. Report from
          Harald van Dijk <harald@gigawatt.nl>

                                   12/20
                                   -----
braces.c
        - array_concat: add a check for interrupts and terminating signals
          into the inner loop

jobs.c
        - without_job_control: set original_pgrp == NO_PID since we don't
          want to be messing with the terminal pgrp if we call end_job_control.
          From a report from ks1322 ks1322 <ks1322@gmail.com>

                                   12/21
                                   -----
include/{posixtime.h,systimes.h,shmbutil.h,shtty.h}
        - PARAMS: remove

                                   12/22
                                   -----
builtins/evalfile.c
        - _evalfile: add SEVAL_NOOPTIMIZE to the parse_and_execute flags
          (maybe overkill, but safer). From a report by
          Dan Church <h3xx@gmx.com> and Oguz <oguzismailuysal@gmail.com>

lib/sh/gettimeofday.c
        - gettimeofday: added code for _WIN32 version

                                   12/27
                                   -----
doc/{bash.1,bashref.texi},builtins/printf.def
        - specify the valid format characters as a subset of what printf(3)
          specifies, note that the %n format specifier takes a variable name
          as an argument. Suggestion from Emanuele Torre <torreemanuele6@gmail.com>

                                   12/28
                                   -----
{xmalloc,variables,unwind_prot,trap,test,subst,sig,siglist,shell,redir,
pcomplete,pathexp,make_cmd,mailcheck,jobs,input,hashcmd,hashlib,general,
flags,findcmd,externs,execute_cmd,error,dispose_cmd,command,bashline,
bashhist,assoc,arrayfunc,array,alias}.h
{version,version2}.c
        - PARAMS: remove for ANSI C-ification

builtins/{getopt,common,bashgetopt}.h
builtins/{mkbuiltins,gen-helpfiles,psize,psize-posix}.c
builtins/{evalstring,bashgetopt,common,evalfile,getopt}.c
builtins{alias,bind,break,cd,command,complete,declare,enable,exit,fc,
fg_bg,getopts,hash,help,history,jobs,kill,mapfile,printf,pushd,read,set,
shopt,source,suspend,trap,type,ulimit,umask,wait}.def
        - PARAMS: remove for ANSI C-ification

lib/malloc/{watch,table,shmalloc,mstats,imalloc}.h
lib/malloc/{malloc,stats,table,trace}.c
        - PARAMS: remove for ANSI C-ification

lib/glob/{glob,strmatch}.h
lib/glob/{glob,glob_loop,gmisc,sm_loop,smatch,strmatch,xmbsrtowcs}.c
        - PARAMS: remove for ANSI C-ification

lib/intl/{eval-plural,plural-exp,loadinfo,hash-string,gettextP}.h,
lib/intl{plural.y,plural.c},
lib/intl/{finddomain,bindtextdom,dcigettext,l10nflist,loadmsgcat,localealias,plural-exp}.c 
        - PARAMS: remove for ANSI C-ification
        - STATIC -> static
        - internal_function -> inline

lib/sh/{casemod,clock,eaccess,fnxform,fpurge,makepath,mktime,netopen,pathphys,random,shquote,snprintf,spell,strtod,strtoimax,strtoumax,times,timeval,tmpfile,unicode,winsize,zcatfd,zgetline,zmapfd}.c
        - PARAMS: remove for ANSI C-ification

support/{bashversion.c,mkversion.sh,mksignames.c}
        - PARAMS: remove for ANSI C-ification

lib/sh/{clock,strchrnul,getcwd,times,rename,inet_aton,strdup,strerror,strnlen
strpbrk,strtod,strtoimax,strtol,strtoumax,wcsdup,wcsnwidth,wcswidth,strcasecmp,
strcasestr}.c
        - C89-style function declarations

lib/malloc/{alloca,malloc,stats,table,trace,xmalloc}.c
        - C89-style function declarations

                                   12/29
                                   -----
lib/glob/{glob,glob_loop,gmisc,sm_loop,smatch,strmatch,xmbsrtowcs}.c
        - C89-style function declarations

lib/sh/{zcatfd,zgetline,zmapfd,zread,zwrite,winsize,vprint,uconvert,ufuncs,
unicode,utf8}.c
lib/sh/{stringlist,stringvec,strtrans,strvis,timeval,tmpfile}.c
lib/sh/{setlinebuf,shmatch,shmbchar,shquote,shtty,snprintf,spell}.c
lib/sh/{random,pathcanon,pathphys,oslib,netconn,netopen}.c
lib/sh/{mailstat,makepath,mbscasecmp,mbschr,mbscmp,mktime}.c
lib/sh/{input_avail,itos,getenv,fmtulong,fnxform,eaccess,dprintf,casemod,clktck}.c
        - C89-style function declarations

examples/loadables/{accept,asort,basename,bcat,cat,csv,cut,dirname,dsv}.c
examples/loadables/{fdflags,finfo,head,hello,id,lcut,ln}.c
examples/loadables/{mkdir,mkfifo,mktemp,mypid,necho,pathchk}.c
examples/loadables/{print,printenv,push,realpath,rm,rmdir,seq}.c
examples/loadables/{setpgid,stat,strftime,sync,tee,template,truefalse,tty}.c
examples/loadables/{uname,unlink,whoami}.c
        - C89-style function declarations

xmalloc.c, array2.c, list.c, dispose_cmd.c, copy_cmd.c, bracecomp.c, mksyntax.c
        - PARAMS: remove for ANSI C-ification
        - C89-style function declarations

                                   12/30
                                   -----
hashlib.c,assoc.c,input.c,hashcmd.c,alias.c,alias.h,array.c,flags.c,pcomplib.c,
pcomplib.h,locale.c
variables.c,arrayfunc.c,bashhist.c,bashline.c,error.c,pathexp.c,nojobs.c,
stringlib.c,eval.c,findcmd.c,mailcheck.c,make_cmd.c,shell.c,print_cmd.c,
general.c,expr.c
        - PARAMS: remove for ANSI C-ification
        - C89-style function declarations
        - add `const' and `inline' where it makes sense

                                   12/31
                                   -----
test.c,execute_cmd.c,parse.y,pcomplete.c,trap.c,subst.c,braces.c,jobs.c,sig.c
builtins/{evalstring.c,gen-helpfiles.c,mkbuiltins.c}
builtins/{alias.def,bind.def,break.def,builtin.def,caller.def,cd.def,colon.def}
builtins/{command.def,complete.def,declare.def,echo.def,enable.def,eval.def}
builtins/{exec.def,exit.def,fc.def,fg_bg.def,hash.def,help.def,history.def}
builtins/{jobs.def,kill.def,let.def,mapfile.def,printf.def,pushd.def,read.def}
builtins/{return.def,set.def,setattr.def,shift.def,shopt.def,source.def}
builtins/{suspend.def,test.def,times.def,trap.def,type.def,ulimit.def}
builtins/{umask.def,wait.def}
        - PARAMS: remove for ANSI C-ification
        - C89-style function declarations
        - add `const' and `inline' where it makes sense

                                 1/2/2023
                                 --------
lib/sh/{stringvec.c,inet_aton.c,strnlen.c,spell.c,netopen.c,stringlist.c}
lib/sh/{strtrans.c,tmpfile.c,uconvert.c,zcatfd.c}
builtins/{common.c,common.h}
mailcheck.c,bashline.c,pathexp.c,stringlib.c,locale.c,pcomplete.c,redir.c
test.c,trap.c,variables.c,bashhist.c,expr.c,arrayfunc.c,assoc.c,variables.c
subst.c,findcmd.c
arrayfunc.h,variables.h,findcmd.h,bashline.h,trap.h,pathexp.h,externs.h,
pcomplete.h,bashhist.h,assoc.h,general.h,subst.h
        - more `const' changes, remove `register'

                                    1/3
                                    ---
parse.y
        - more `const' changes, remove `register'

variables.h
        - VARLIST: list_len and list_size now size_t

variables.c
        - vlist_alloc: take size_t parameter, changed callers
        - vlist_realloc: take size_t parameter, changed callers

lib/sh/stringvec.c,externs.h
        - functions that take int size params now take size_t
        - strvec_len: returns size_t

lib/sh/stringlist.c,externs.h
        - STRINGLIST: list_size and list_len now size_t
        - functions that take int size params now take size_t

variables.c,bashline.c,builtins/bind.def
        - change strvec_ int parameters to size_t where it makes sense
        - change strlist_ int parameters to size_t where it makes sense

builtins/shopt.def
        - reset_shopt_options: set glob_always_skip_dot_and_dotdot to 1,
          since that's the current default in lib/glob/glob.c

                                    1/4
                                    ---
execute_cmd.c,parse.y,general.c,make_cmd.c,print_cmd.c,variables.c,expr.c
jobs.c,subst.c,input.c,unwind_prot.c,pathexp.c,pathexp.h,alias.c,bashline.c
bashhist.c,lib/sh/shquote.c,externs.h,stringlib.c,locale.c,findcmd.c
builtins/common.c,builtins/declare.def,builtins/enable.def,builtins/fc.def
lib/sh/zmapfd.c,builtins/help.def,builtins/mapfile.def,builtins/read.def
builtins/shopt.def,lib/glob/glob.c,lib/glob/smatch.c,lib/glob/sm_loop.c
lib/glob/xmbsrtowcs.c,lib/glob/gmisc.c,lib/glob/gm_loop.c
lib/sh/getenv.c,lib/sh/makepath.c,lib/sh/pathphys.c,lib/sh/tmpfile.c
lib/sh/stringlib.c,lib/sh/spell.c,lib/sh/strtrans.c,lib/sh/zgetline.c
lib/sh/mbscasecmp.c,lib/sh/utf8.c
lib/readline/readline.c,lib/readline/rlprivate.h,lib/readline/vi_mode.c
lib/readline/complete.c,lib/readline/bind.c,lib/readline/isearch.c
lib/readline/util.c,lib/readline/kill.c,lib/readline/macro.c
lib/readline/text.c,lib/readline/histexpand.c,lib/readline/histfile.c
lib/readline/mbutil.c,lib/tilde/tilde.c
        - size_t changes
        - remove some unused variables
        - remove `register'

                                    1/5
                                    ---
builtins/getopt.c
        - sh_getopt_restore_state: make sure argv[sh_curopt] is non-null before
          using it

parse.y
        - CHECK_FOR_RESERVED_WORD: make sure to set word_top appropriately if
          the last token was IF, WHILE, or UNTIL, since these tokens can follow
          those reserved words

Makefile.in
        - ubsan: new target, to build with gcc/clang UBSan undefined behavior
          sanitizer

                                    1/6
                                    ---
execute_cmd.[ch],locale.c,parse.y,expr.c,bracecomp.c,bashline.c,externs.h
stringlib.c,general.[ch]
builtins/{subst.c,array.c,echo.def,printf.def,enable.def,help.def,set.def}
lib/sh/{strtrans.c,stringvec.c,shquote.c}
lib/glob/sm_loop.c
lib/readline/{vi_mode.c,histfile.c,funmap.c,complete.c,display.c,bind.c,isearch.c}
lib/tilde/tilde.c
        - final code cleanups for ANSI C and lint/ubsan/asan runs

                                    1/7
                                    ---
lib/readline/complete.c
        - rl_complete_internal: when computing nontrivial_lcd and the length
          of the text from the line buffer, dequote the text from the line
          buffer before comparing it against the common prefix of the matches
          (matches[0]), so we don't get spurious mismatches if the quoted text
          from the line is longer than the unquoted match. Report from
          Martin Castillo <castilma@uni-bremen.de>

input.[ch]
        - get_buffered_stream(fd): new function, return the BUFFERED_STREAM *
          corresponding to file descriptor FD, if it exists

                                    1/8
                                    ---
parse.y
        - shell_getc: if yy_getc returns EOF but the buffered stream input
          indicates an error state, set shell_input_line_terminator to
          READERR. Currently treated the same as EOF.

                                   1/10
                                   ----
lib/sh/random.c
        - intrand32: use % operator instead of (mathematically equivalent)
          subtraction and multiplication, which can cause signed 32-bit
          overflow. Report from Sam James <sam@gentoo.org>

lib/readline/input.c
        - rl_getc: if the application hasn't defined a signal event handler,
          and readline is in callback mode, make sure SIGINT breaks out of
          operations like incremental and non-incremental searches and digit
          arguments by calling _rl_abort_internal, since the callback code
          expects the various contexts that rl_callback_sigcleanup() resets
          to be valid
        - rl_getc: if there is a pending signal when we enter the while loop
          in callback mode, handle it in the same way we would if a signal
          arrived while we were waiting in select/pselect. That forces
          callback mode to call _rl_abort_internal in the right place.
          From a report from Andrew Burgess <aburgess@redhat.com>

                                   1/13
                                   ----
trap.c
        - SIG_ASYNCSIG: new value for sigmodes; means that the signal is
          ignored because an async command is being executed
        - set_signal: if the original signal disposition is SIG_IGN only
          return if SIG_ASYNCSIG isn't set. This implements POSIX interp 751
          for setting a trap
        - ignore_signal: if we're ignoring a signal that already has SIG_IGNORED
          set, make sure we set SIG_TRAPPED in case of SIG_ASYNCSIG (POSIX
          interp 751)
        - reset_signal,restore_signal: if we want to reset or restore a signal
          that has SIG_ASYNCSIG set, make sure we reset to SIG_DFL if the
          signal is trapped to maintain POSIX semantics
        - set_signal_async_ignored: new function to set original_signals to
          SIG_IGN and set the SIG_IGNORED and SIG_ASYNCSIG sigmode flags; used
          by setup_async_signals
        - signal_is_async_ignored: return true if the SIG argument is being
          ignored because it's part of an async list

trap.h
        - set_signal_async_ignored,signal_is_async_ignored: extern declarations

sig.c
        - initialize_terminating_signals: if a signal is ignored because it's
          part of an async list, don't bother trying to initialize or set the
          hard ignored flag

execute_cmd.c
        - execute_simple_command: if we're executing a builtin or function
          asynchronously, call reset_terminating_signals like we do in
          execute_in_subshell()
        - execute_subshell_builtin_or_function: only call set_sigint_handler
          if async is 0, so we don't undo the work done by setup_async_signals.
          If the old handler is SIG_IGN and the signal has SIG_ASYNCSIG set
          and isn't trapped, restore the old handler
        - setup_async_signals: call set_signal_async_ignored to set the right
          flags

                                   1/16
                                   ----
parse.y
        - read_token_word: if we're in posix mode, and we find a reserved word
          before checking a token for aliases, turn off the `check next word
          for aliases' flag (PST_ALEXPNEXT). This is for compatibility with
          other shells. From a report by <anonymous4feedback@outlook.com>
        - shell_getc: make sure the shell is reading a buffered stream before
          checking the default buffered stream for errors if yy_getc returns 0

                                   1/17
                                   ----
subst.c
        - split_at_delims: if the cursor is at whitespace just preceding a
          word, and we're doing this for completion (e.g., to build COMP_WORDS),
          force the creation of an empty word and set the current word to it.
          This is a change from previous behavior, but a useful one: it makes
          COMP_WORDS[COMP_CWORD] and $2 to a completion function consistent
          and the same as the word readline wants to complete. From a report
          from Naim Favier <n@monade.li> back in 6/2022

parse.y
        - read_token: turn off PST_ALEXPNEXT if we read a shell metacharacter:
          we will expand aliases anyway if the token puts the shell in a
          command word position and we took pains to turn it off for
          redirection tokens; remove special cases that turned it off
        - pop_string: don't turn off PST_ALEXPNEXT if it's on; this is what
          prevents it from being enabled if an alias expansion of more than
          two aliases ends with a space. Fixes issue reported by
          <anonymous4feedback@outlook.com>

                                   1/18
                                   ----
jobs.c
        - wait_for: if we are reaping a background job, don't bother trying to
          give the terminal back to shell_pgrp -- we never set the terminal's
          pgrp to that job in the first place. Fixes issue reported by
          Steffen Nurpmeso <steffen@sdaoden.eu>

                                   1/19
                                   ----
lib/readline/{histexpand.c,history.h}
        - history_expand: first argument is now `const char *'. Request from
          Simon Marchi <simon.marchi@polymtl.ca>

lib/readline/doc/{history.3,hstech.texi}
        - history_expansion: change description to note new const first arg

                                   1/21
                                   ----
lib/readline/input.c
        - rl_gather_tyi: move call to rl_input_available_hook to the top,
          giving it first shot. There's still no way for it to set chars_avail.
          Conditionalize the rest of the input methods based on whether the
          result == -1.

lib/readline/rl_private.h
        - move the decision making about RL_TIMEOUT_USE_SELECT/RL_TIMEOUT_USE_SIGALRM
          here from input.c

                                   1/23
                                   ----
trap.c
        - restore_default_signal: if we have a signal that's not trapped, but
          is a signal that is set to SIG_ASYNCSIG, POSIX interp 751 requires
          the shell to allow it to be reset to the default, even though it
          wasn't already trapped

subst.c
        - do_assignment_internal: don't allocate new memory for NAME, just
          modify and restore it in place

                                   1/25
                                   ----
lib/readline/histfile.c
        - history_write_slow: a fallback function that uses stdio to write the
          history list to a supplied file descriptor
        - history_do_write: call history_write_slow if ftruncate/mmap/malloc
          fail; hope the simpler approach works

                                   1/27
                                   ----
general.[ch]
        - valid_function_name: new function, returns non-zero if the name
          can be used as a function name without the `function' prefix

print_cmd.c
        - named_function_string,print_function_def: use valid_function_name so
          the rules about when to use the `function' reserved word are
          consistent

builtins/trap.def
        - new option -P, which prints only the action associated with each
          signal spec argument

doc/{bash.1,bashref.texi}
        - trap: document new -P option, add note that trap -p or trap -P in a
          subshell can print the parent's traps

                                   1/28
                                   ----
parse.y
        - shell_getc: make sure references to shell_input_line_property are
          protected by #ifdef HANDLE_MULTIBYTE. From
          https://savannah.gnu.org/patch/?10309

print_cmd.c
        - named_function_string,print_function_def: don't copy the function
          COMMAND * before printing it as text; unwind-protect any redirects
          attached to the function body

parse.y
        - PST_CMDBLTIN: new parser state, means the previous token word was 
          `command' in a command position
        - read_token_word: in posix mode, "command" followed by a declaration
          utility preserves the declaration utility status of the following
          word, so we mark that state and then check a word for being an
          assignment builtin if in that state on the next call. This makes
          compound assignments to builtins that accept them (e.g., `declare')
          work as if `command' were not present. This is a POSIX issue 8
          requirement
        - read_token: turn off PST_CMDBLTIN state as appropriate

subst.c
        - use locale_mb_cur_max instead of MB_CUR_MAX consistently

                                    2/1
                                    ---
builtins/printf.def
        - printf_builtin: %q and %Q use the `alternate form' flag to force
          single quoting instead of backslash quoting. $'...' is still
          preferred if there are characters that require it
        - getwidestr, getwidechar: functions to take a possibly multibyte
          character string and convert to a wide character string or a wide
          character, respectively
        - convwidestr, convwidechar: functions to take a wide character string
          or single character, apply any precision, convert back to a multibyte
          character string, and return the result for printing
        - printf_builtin: consistently print an error message if printstr()
          returns < 0, since it will only do that if ferror(stdout) is true;
          let the PRETURN macro do that if appropriate, so we don't duplicate
          code

                                    2/2
                                    ---
builtins/printf.def
        - printwidestr: wide-character version of printstr; understands
          fieldwidth and precision as characters instead of bytes
        - printf_builtin: interpret %ls and %lc as referring to wide strings
          and characters, respectively; use printwidestr to print the wide-
          character string obtained from the (presumably multibyte) argument.
          Fieldwidth and precision are characters, not bytes

                                    2/3
                                    ---
builtins/set.def
        - unset_builtin: since tokenize_array_reference modifies its NAME
          argument, we need to restore the original word if there is no
          array variable found with that name, so we can go ahead and try to
          unset a function with that wonky name. Inspired by a report from
          Emanuele Torre <torreemanuele6@gmail.com>

parse.y
        - read_token_word: don't set the W_HASDOLLAR flag in the returned WORD
          for <(command) and >(command). That way they can be used in function
          names. 

execute_cmd.c
        - execute_simple_command: if in posix mode, don't perform function
          lookup for command names that contain a slash

builtins/enable.def
        - dyn_load_builtins: don't allow dynamically loaded builtins to have
          slashes in their name

                                    2/4
                                    ---
general.c
        - valid_function_word: new function, used to check whether a word can
          be used as a function name. Replaces call to check_identifier();
          incorporates POSIX interp 383 check for special builtin so we can
          move it out of execute_intern_function().
        - valid_function_name: use the FLAGS argument instead of POSIXLY_CORRECT;
          only reject reserved words if FLAGS&1

execute_cmd.c
        - execute_intern_function: call valid_function_word() instead of
          check_identifier(); remove check for special builtin that
          valid_function_word performs

print_cmd.c
        - print_function_def,named_function_string: pass POSIXLY_CORRECT to
          valid_function_name as the FLAGS argument

                                    2/6
                                    ---
subst.c
        - expand_subscript_string: don't set W_NOTILDE in td.flags so we
          perform `normal' tilde expansion (expansion at the start of the
          word) on the array subscript
        - expand_oneword,expand_compound_assignment_word: change second arg to
          ATYPE, which better reflects its use

arrayfunc.c
        - assign_assoc_from_kvlist,assign_compound_array_list,expand_and_quote_assoc_word:
          use expand_assignment_string_to_string instead of expand_subscript_string
          for the rhs of the assignment or the second word in the kvpair to
          be more consistent with how assignment statements behave (e.g.,
          tilde expansion). Fixes issue reported by maroloccio@gmail.com

                                    2/7
                                    ---
parse.y
        - discard_until: now returns the last character read. If we get an
          EOF while processing a comment, return EOF (rarely happens;
          shell_getc returns EOF only under certain circumstances)
        - read_token: if discard_until returns EOF, return yacc_EOF

input.h
        - bclearerror: new macro, clears the B_ERROR flag in the buffered
          stream BP

input.c
        - b_fill_buffer: try making errors `sticky': if the B_ERROR flag is
          set for the buffered stream, return EOF immediately. This is similar
          to what stdio does

builtins/fc.def
        - fc_builtin: in posix mode, if there are extra arguments supplied to
          -s (e.g. pat=rep first last), throw an error

doc/{bash.1,bashref.texi}
        - printf: document new altform for %q/%Q and %ls/%lc

                                    2/8
                                    ---
bashline.c
        - set_up_new_line: if the new line doesn't change rl_line_buffer,
          just return right away without changing rl_point. Affects
          alias-expand-line, history-expand-line, and history-and-alias-expand-line.
          Inspired by a report from
          Addison Brendtro <addison.brendtro@gmail.com>

builtins/declare.def
        - declare_internal: make multiple calls to `local -' at the same
          context have no effect after the first one. That way we don't keep
          overwriting the saved option set. Report and fix from
          Emanuele Torre <torreemanuele6@gmail.com>

                                   2/10
                                   ----
execute_cmd.[ch]
        - bind_lastarg: now a public function

parse.y
        - execute_variable_command: call bind_lastarg instead of bind_variable
          to avoid exporting $_ if allexport is set. Fix from
          Emanuele Torre <torreemanuele6@gmail.com>
        - history_delimiting_chars: if we're parsing some kind of delimited
          construct that's *not* a quoted string, don't bother adding an extra
          newline to the history if the current history entry already ends in
          a newline. From https://savannah.gnu.org/support/?110838 via
          Ganapathi Kamath <hgkamath@hotmail.com>

                                   2/13
                                   ----
bashline.c
        - set_up_new_line: add some more heuristics to try and usefully
          position rl_point

                                   2/16
                                   ----
lib/readline/complete.c
        - complete_fncmp: fix for case mapping `-' and `_' if the bytes do not
          form a valid multibyte character

lib/readline/util.c
        - new functions: _rl_strcaseeqn, like strcasencmp but with a flag to
          handle character mapping (-_) like completion-map-case wants, and
          _rl_charcasecmp, to do the same thing for two characters.
          Inspired by a patch from Brennan Vincent <brennan@umanwizard.com>

lib/readline/mbutil.c
        - new functions: _rl_mb_strcaseeqn and _rl_mb_charcasecmp, multibyte
          versions of the above
          Inspired by a patch from Brennan Vincent <brennan@umanwizard.com>

lib/readline/{rlprivate.h,rlmbutil.h}
        - extern declarations for the above functions

lib/readline/complete.c
        - complete_fncmp: use _rl_mb_strcaseeqn and _rl_strcaseeqn as
          appropriate, remove duplicated inline code
          Inspired by a patch from Brennan Vincent <brennan@umanwizard.com>

lib/readline/{isearch.c,rlprivate.h}
        - _rl_search_case_fold: new variable, will be used to indicate case-
          insensitive incremental and non-incremental searches

lib/readline/bind.c
        - search-ignore-case: new bindable variable, tied to _rl_search_case_fold
          Inspired by a patch from Brennan Vincent <brennan@umanwizard.com>

lib/sh/mbsncmp.c
        - mbsncmp(3) replacement

lib/readline/isearch.c
        - _rl_isearch_dispatch: honor `search-ignore-case' variable and perform
          case-insensitive incremental searches if it's set
          Inspired by a patch from Brennan Vincent <brennan@umanwizard.com>

lib/readline/histlib.h
        - CASEFOLD_SEARCH: new flag for history searching, means to search
          strings case-insensitively

lib/readline/histsearch.c
        - history_search_internal: anchored searches honor CASEFOLD_SEARCH

lib/readline/histsearch.c
        - history_search_internal: searches now honor CASEFOLD_SEARCH
        - _hs_history_search: new function, just external interface to
          history_search_internal, allows the rest of the library to specify
          search flags

lib/readline/histlib.h
        - _hs_history_search: extern declaration

lib/readline/search.c
        - noninc_search_from_pos: use _hs_history_search, add CASEFOLD_SEARCH
          to flags if _rl_search_case_fold is non-zero

doc/bash.1,lib/readline/doc/{readline.3,rluser.texi}
        - search-ignore-case: document new bindable variable

                                   2/17
                                   ----
config-top.h
        - PATSUB_REPLACE_DEFAULT: macro set to 1 or 0 to set the default value
          of `patsub_replacement'. Can be overridden by -DPATSUB_REPLACE_DEFAULT=0
          in the `make' command

builtins/shopt.def
        - reset_shopt_options: reset patsub_replacement to PATSUB_REPLACE_DEFAULT

subst.c
        - patsub_replacement: initialize to PATSUB_REPLACE_DEFAULT

parse.y
        - shell_getc: only call clearerr(stdin) when yy_stream_get returns EOF
          if the shell is currently interactive (interactive != 0)
        - shell_getc: if the shell is not interactive (interactive_shell == 0)
          and using stdio to read the script (bash_input.type == st_stream),
          set shell_input_line_terminator to READERR if ferror(stdin) is true
          after yy_stream_get returns EOF

                                   2/20
                                   ----
doc/{bash.1,bashref.texi}
        - update aliases description based on a bug-bash discussion
        - update description of word splitting behavior when IFS is unset

builtins/evalfile.c
        - _evalfile: if reading the entire file doesn't return the same
          number of bytes as requested (the file size), treat this as a read
          error

                                   2/21
                                   ----
parse.y
        - yylex: if read_token returns < 0, return YYEOF if EOF_Reached = 1.
          Don't return yacc_EOF because that allows commands to be executed.
        - grammar: add a production to handle YYEOF, treating it the same as
          yacc_EOF. Based on a report from
          Eduardo A. Bustamante López <dualbus@gmail.com>

jobs.c
        - wait_for: if we're checking for window size changes, allow checks
          during trap commands while readline is active or `bind -x' command
          execution. Fix from Koichi Murase <myoga.murase@gmail.com>

                                   2/22
                                   ----
jobs.c
        - wait_for: check for window size changes during programmable completion

                                   2/23
                                   ----
execute_cmd.c,input.c,jobs.c,nojobs.c,parse.y,redir.c,shell.c
builtins/{exec.def,read.def}
input.h
        - BUFFERED_INPUT: preprocessor #define is gone, this code is now
          unconditional

                                   2/24
                                   ----
builtins/declare.def
        - declare_internal: set the att_propagate flag on a variable that is
          marked as att_tempvar only if it's *not* marked att_local. The
          effect is that local variables with the same name as variables in
          the temporary environment are not propagated to the previous scope.
          From a report by Voldemar Lazarev <voldemar.lazarev@alludo.com>
          that prompted a bug-bash discussion

builtins/setattr.def
        - set_var_attribute: don't set local variables for which we are setting
          export or readonly to propagate back to the previous context, but
          make sure we preserve posix semantics

parse.y
        - read_token_word: if we're parsing the words of a compound assignment
          (parser_state & PST_COMPASSIGN), and we have a valid assignment
          statement as a word ([sub]=value), set W_NOBRACE in the word so we
          don't try and perform brace expansion on it. This makes ( [sub]=word )
          closer to name[sub]=word.
          From a report by Ilkka Virta <itvirta@iki.fi> back in July, 2020:
          https://lists.gnu.org/archive/html/bug-bash/2020-07/msg00133.html

                                   2/27
                                   ----
lib/readline/display.c
        - rl_redisplay: if HANDLE_MULTIBYTE is defined, do the special META_CHAR
          handling if wc_bytes == wc_width == 1

execute_cmd.c
        - eval_arith_for_expr: make sure we don't call make_word with a NULL
          string if expand_arith_string returns NULL. Report from
          F G <frank.graziano@gmail.com>

arrayfunc.c
        - assign_assoc_from_kvlist: added code, currently disabled, to perform
          all expansions, including word splitting, on the kv-pair word list

                                   2/28
                                   ----
lib/readline/search.c
        - rl_history_search_reinit: change check against history_string_size
          to account for history_string_size now being a size_t. Report and
          fix from Grisha Levit <grishalevit@gmail.com>

                                    3/2
                                    ---
lib/readline/history.c
        - _hs_search_history_data: search the history list for an entry with
          `data' matching the argument; return the index
        - _hs_replace_history_data: search backwards through the history list
          from the end

lib/readline/histlib.h
        - _hs_search_history_data: extern declaration

lib/readline/search.c
        - make_history_line_current: make sure rl_undo_list doesn't appear in
          any history entries (it should be a private search string undo list)
          before freeing it

lib/readline/misc.c
        - _rl_free_saved_history_line: make sure the undo list in
          _rl_saved_line_for_history isn't rl_undo_list and doesn't appear in
          any history list entries as `data' before freeing it. Fixes core
          dump after SIGINT reported by Grisha Levit <grishalevit@gmail.com>

parse.y,print_cmd.c
        - changes for size_t when computing new amount for xrealloc

                                    3/3
                                    ---
parse.y
        - set_word_top: new inline function to check and set word_top; called
          from the appropriate places
        - parse_dparen: call set_word_top before parsing an arith command or
          nested subshell. Fixes underflow issue reported by
          Grisha Levit <grishalevit@gmail.com>

examples/loadables/kv.c
        - kv: new loadable builtin, reads key-value pairs from stdin and assigns
          them to an associative array

                                    3/7
                                    ---
builtins/trap.def
        - trap_builtin: if trying to restore SIGQUIT to its default disposition,
          and the shell is in posix mode, set to SIG_DFL if the shell is
          running as an async command and signal_is_async_ignored (SIGQUIT) is
          true. Posix conformance issue 751

                                    3/8
                                    ---
builtins/alias.def
        - print_alias: now returns int. Check for write errors using sh_chkwrite
          and return EXECUTION_FAILURE if it fails
        - alias_builtin: if print_alias returns EXECUTION_FAILURE, return
          EXECUTION_FAILURE immediately (write error). POSIX test conformance

                                    3/9
                                    ---
builtins/cd.def
        - change_to_directory: if we're not in physical mode and are in posix
          mode, add step 9 of the posix cd algorithm, which essentially tries
          the pathname the user supplied if it's shorter than PATH_MAX and the
          length of the canonicalized pathname is longer than PATH_MAX. This
          is basically what default bash mode does without the length checks.
          POSIX test conformance.

subst.c
        - strip_trailing_ifs_whitespace: use ifs_whitespace(*s) instead of
          spctabnl(*s) like word splitting and get_word_from_string. POSIX
          test conformance

jobs.c
        - wait_for: tweak change from 1/18 to make sure a J_ASYNC job isn't in
          the foreground (J_FOREGROUND) as it would be if it had been continued
          in the foreground with `fg'; if it is, we want to give the terminal
          back to shell_pgrp

                                   3/10
                                   ----
input.c
        - fd_berror: returns true if the file descriptor passed as an arg
          corresponds to a buffered stream with an error condition

parse.y
        - shell_getc: use fd_berror instead of inline code
        - shell_getc: if yy_getc returns EOF, immediately set line[0] to NULL
          and set shell_input_line_terminator to READERR. Then exit immediately
          with status 128 if index == 0, line[index] == NULL, and READERR.
          Posix interp 1629

config-top.h
        - FATAL_READERROR: now defined to 1 by default

lib/readline/display.c
        - rl_expand_prompt: allocate an empty string for local_prompt if prompt
          is the NULL or empty string. Fixes seg fault with rl_message and
          empty prompt reported by Grisha Levit <grishalevit@gmail.com>

lib/readline/histexpand.c
        - history_expand: if hist_extract_single_quoted returns an index at or
          past the end of the string, correct the index and break the loop,
          which will cause a return. Report and fix from
          Grisha Levit <grishalevit@gmail.com>

                                   3/13
                                   ----
lib/readline/vi_mode.c
        - rl_domove_motion_callback: set the MOVE_FAILED flag in the context M
          if rl_dispatch returns non-zero and other movement-command-specific
          conditions are met. Right now, an unsuccessful `f' or `F' command
          is failure.
        - _rl_vi_domove_motion_cleanup: if the command is `c' or `C', we don't
          enter insert mode if the MOVE_FAILED flag is set in the context M.
          This is how standalone vi works.

lib/readline/kill.c
        - rl_unix_filename_rubout: add some checks for rl_point > 0 before
          looking at rl_line_buffer[rl_point - 1]. Report and fix from
          Grisha Levit <grishalevit@gmail.com>

lib/readline/isearch.c
        - _rl_isearch_dispatch: reset cxt->sline_index to 0 if it's past the
          end of the history string (sline_len). Fixes asan bug reported by
          Grisha Levit <grishalevit@gmail.com>

lib/readline/histexpand.c
        - history_tokenize_word: don't increment the string index past the
          NULL if the line ends in a backslash.Fixes asan bug reported by
          Grisha Levit <grishalevit@gmail.com>

lib/readline/vi_mode.c
        - rl_vi_yank_to,rl_vi_change_to,rl_vi_delete_to: if these are called
          with an existing valid vimvcxt, save it and allocate a new one for
          the current function call to use, then restore it before returning.
          This prevents referencing vimvcxt after freeing it in the case that
          these functions call each other recursively (e.g., y1y1, c1d1, etc.).
          Fixes asan bug reported by Grisha Levit <grishalevit@gmail.com>

                                   3/14
                                   ----
bashhist.c
        - bash_add_history: make sure curlen is large enough before checking
          curlen - 1 and curlen - 2, otherwise you can get buffer underflow.
          Fixes asan bug reported by Grisha Levit <grishalevit@gmail.com>

bashline.c
        - bash_spell_correct_shellword: don't bother trying to correct empty
          words. Fixes asan bug reported by Grisha Levit <grishalevit@gmail.com>

lib/sh/shquote.c
        - sh_mkdoublequoted: make sure to allocate enough memory for the
          pathological case: where every character in the string needs to be
          backslash-escaped because it's special within double quotes.
          Fixes asan bug reported by Grisha Levit <grishalevit@gmail.com>

doc/{bash.1,bashref.texi}
        - here documents: make sure the summary specifies the here-document is
          terminated by `delimiter'; specify what the delimiter is if the word
          is not quoted. Prompted by a help-bash post from
          goncholden <goncholden@protonmail.com>

                                   3/15
                                   ----
doc/bash.1,lib/readline/doc/rluser.texi
        - shell-expand-line: enumerate the specific expansions performed.
          From a request by Alex Bochannek <alex@bochannek.com>

findcmd.c
        - path_value: new function, returns normalized version of $PATH. Takes
          a single argument saying whether or not to look in the temporary
          environment first. Normalizes null $PATH (PATH=) into ".". From a
          bug-bash discussion started by Moshe Looks <moshe.looks@gmail.com>
        - _find_user_command_in_path: use path_value()
        - user_command_matches: use path_value()
        - search_for_command: if PATH[0] == 0, set PATH = "." like path_value().
          This has the side effect of calling command_not_found_handle when
          PATH is the empty string and the command isn't in the current
          directory
        - search_for_command: if path == 0, but we found an executable in the
          current directory, make sure to set dot_found_in_search before adding
          it to the command hash table

findcmd.h
        - path_value: extern declaration

bashline.c
        - command_word_completion_function: use path_value()

builtins/enable.def
        - dyn_load_builtin: use path_value for BASH_LOADABLES_PATH; it's cleaner
          though it doesn't change the behavior

                                   3/17
                                   ----
bashline.c 
        - bashline_reset: reset rl_filename_quoting_function, since there is a
          SIGINT code path where it could remain reset by glob completion.
          Reported by Grisha Levit <grishalevit@gmail.com>
        - command_word_completion_function,command_subst_completion_function,
          glob_complete_word: set some static variables to NULL
          after freeing them so they don't potentially get freed twice after
          a SIGINT during completion
          Reported by Grisha Levit <grishalevit@gmail.com>

parse.y
        - read_token_word: when deciding how to quote translated strings, don't
          free ttok before comparing it to ttrans
          Reported by Grisha Levit <grishalevit@gmail.com>
        - parse_matched_pair: same thing for freeing nestret
        - read_token: if we return a newline, make sure we call set_word_top()
          if necessary.
          Fixes underflow reported by Grisha Levit <grishalevit@gmail.com>

lib/glob/sm_loop.c
        - EXTMATCH: don't bother with FNM_PATHNAME checks; this function isn't
          called with a pathname.
          Fixes underflow reported by Grisha Levit <grishalevit@gmail.com>

lib/readline/misc.c
        - rl_maybe_replace_line: if we replace a history entry's data with
          rl_undo_list, we need to set rl_undo_list to 0, since we should not
          have rl_undo_list pointing to something from a history entry
          Fixes asan error reported by Grisha Levit <grishalevit@gmail.com>

                                   3/20
                                   ----
lib/readline/histexpand.c
        - postproc_subst_rhs: fix off-by-one error when reallocating new string
          for case where we're *not* substituting for `&'
          Fixes asan error reported by Grisha Levit <grishalevit@gmail.com>

jobs.c
        - terminate_current_pipeline: add a SIGKILL call in there in case the
          SIGTERM doesn't work
        - terminate_current_pipeline: add a version that works when job control
          isn't enabled (pipeline_pgrp == shell_pgrp)

subst.c
        - skip_to_delim: pass completeflag (SX_COMPLETE) to extract_dollar_brace_string
          in case it includes a command substitution, since we want to inhibit
          error messages in this case

parse.y
        - no_semi_successors: add DOLPAREN to list since something like $(\n
          shouldn't have a semicolon added there.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   3/21
                                   ----
pcomplete.c
        - gen_globpat_matches: set noglob_dot_filenames here since we're not
          calling shell_glob_filename to do it
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   3/22
                                   ----
lib/readline/misc.c
        - rl_maybe_replace_line: if we're replacing a history entry with the
          current line buffer and undo list, then zero out any undo list in
          _rl_saved_line_for_history, since we're not going to use it any more
          Fixes asan error reported by Grisha Levit <grishalevit@gmail.com>

lib/readline/undo.c
        - rl_free_undo_list: if we're freeing rl_undo_list, it can't be a
          valid value for data in _rl_saved_line_for_history
          Fixes asan error reported by Grisha Levit <grishalevit@gmail.com>

lib/readline/complete.c
        - display_matches: don't call rl_display_match_list if we received a
          signal during get_y_or_n and didn't jump out for some reason
          From a report by Grisha Levit <grishalevit@gmail.com>
        - rl_display_match_list: return if we received a signal during
          _rl_internal_pager (via get_y_or_n) and didn't jump out
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   3/23
                                   ----
lib/readline/history.c
        - history_truncate_file: don't bother trying to read the existing
          history file if we're just truncating it to 0 lines

                                   3/24
                                   ----
lib/readline/history.c
        - history_truncate_file: fix off-by-one error that resulted in the
          timestamp associated with the first history entry not being written
          to the truncated history file
          From a report by Grisha Levit <grishalevit@gmail.com>

parse.y 
        - decode_prompt_string: do something rational if localtime() returns
          NULL (extraordinarily rare)
          From a report by Paul Eggert <eggert@cs.ucla.edu>

examples/loadables/stat.c
        - stattime: ditto

examples/loadables/strftime.c
        - strftime_builtin: ditto

lib/readline/examples/histexamp.c
        - main: ditto

include/posixtime.h
        - getnow(): new inline function, calls gettimeofday and returns tv_sec;
          replacement for time(0). From Paul Eggert <eggert@cs.ucla.edu>

general.h
        - NOW: use a call to getnow() to standardize on gettimeofday for time
          information

lib/readline/history.c
        - include #posixtime.h for getnow()
        - hist_inittime: use getnow() instead of calling time(0)

parse.y
        - posixtime.h: include instead of <time.h>
        - decode_prompt_string: use getnow() instead of calling time(0)

                                   3/27
                                   ----
parse.y
        - count_all_jobs: add extern definition if JOB_CONTROL is not defined.
          From Emanuele Torre <torreemanuele6@gmail.com>

bashhist.c
        - bash_add_history: make sure the current history line is not empty
          before checking what ended it.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/histexpand.c
        - history_tokenize_word: break out of loop for incomplete command and
          process substitution or extended globbing patterns
          From a report by Grisha Levit <grishalevit@gmail.com>

bashline.c
        - hostnames_matching: fix size_t issue when checking whether to realloc
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/sh/random.c
        - genseed: use uintptr_t instead of u_bits32_t to silence compiler
          warnings. From Paul Eggert <eggert@cs.ucla.edu>

aclocal.m4
array2.c
builtins/mkbuiltins.c,builtins/psize-posix.c,version.c
builtins/getopts.def                
lib/readline/text.c,lib/readline/bind.c
support/recho.c,support/mksignames.c,support/zecho.c,support/xcase.c
support/printenv.c,support/signames.c,support/bashversion.c
support/memtest.c,support/endian.c
lib/glob/gm_loop.c
        - some cleanups for function prototypes and other stdc requirements
          From Paul Eggert <eggert@cs.ucla.edu>

lib/readline/doc/{rltech.texi,hstech.texi}
        - add prototypes and stdc requirements to the examples

builtins/complete.def
        - compgen_builtin: save and restore readline variables affecting how
          filename completions are treated in case someone uses compgen in
          the foreground.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   3/28
                                   ----
aclocal.m4
builtins/enable.def,builtins/gen-helpfiles.c,builtins/help.def,builtins/printf.def
general.h,hashlib.h
include/ansi_stdlib.h,include/ocache.h
lib/glob/collsyms.h,lib/glob/glob.c
lib/readline/history.h,lib/readline/xmalloc.h
xmalloc.c,xmalloc.h
lib/sh/strtrans.c
lib/tilde/tilde.c
mksyntax.c
support/endian.c
        - don't bother with __STDC__ if we are just using C89 features like
          const, function prototypes, etc.
          From Paul Eggert <eggert@cs.ucla.edu>

externs.h
        - prototype the list functions that take GENERIC_LIST *
          From Paul Eggert <eggert@cs.ucla.edu>

builtins/common.c,examples/loadables/getconf.c
execute_cmd.c,pcomplete.c,subst.c
lib/sh/stringlist.c,lib/sh/stringvec.c
        - changes and casts now that the generic list functions are prototyped
          From Paul Eggert <eggert@cs.ucla.edu>

                                   3/29
                                   ----
aclocal.m4,configure.ac
builtins/common.c,builtins/mkbuiltins.c,builtins/printf.def
include/memalloc.h,include/stdc.h
general.h,jobs.h
pcomplete.c,print_cmd.c
m4/iconv.m4
lib/readline/bind.c,lib/readline/complete.c,lib/readline/display.c
lib/readline/funmap.c,lib/readline/util.c,lib/readline/parens.c
lib/readline/histlib.h
lib/readline/readline.h,lib/readline/rldefs.h,lib/readline/rlstdc.h,lib/readline/rlprivate.h
lib/sh/dprintf.c,lib/sh/snprintf.c,lib/sh/vprintf.c
lib/malloc/shmalloc.h,lib/malloc/imalloc.h,lib/malloc/xmalloc.c
lib/termcap/termcap.h
        - stdarg: since we now assume C89 for prototypes at least, always
          prefer stdarg to old-style varargs
        - SH_VA_START: now use plain old va_start
        - don't bother with extern declarations for standard C89 functions
          From Paul Eggert <eggert@cs.ucla.edu>

config-bot.h
        - PREFER_STDARG: remove

builtins/mkbuiltins.c
execute_cmd.c,unwind_prot.c
unwind_prot.h
        - start on ANSI/ISO C changes for the unwind-protect framework
        - introduce new unwind-protect function pointer type to replace
          Function
          From Paul Eggert <eggert@cs.ucla.edu>

                                   3/30
                                   ----
builtins/command.def,builtins/fc.def,builtins/read.def,builtins/source.def
builtins/evalfile.c,builtins/evalstring.c
dispose_cmd.c,execute_cmd.c,pcomplete.c,print_cmd.c,subst.c,jobs.c,variables.c
dispose_cmd.h,general.h,trap.h
unwind_prot.c,unwind_prot.h
        - rest of work to convert unwind-protect framework to ANSI/ISO C.
          Convert unwind-protects to use new shim functions that obey the new
          unwind-protect function type
          From Paul Eggert <eggert@cs.ucla.edu>

general.h
        - STREQ, STREQN: now static inline functions to take advantage of arg
          type conversion

pcomplete.c,subst.c
lib/readline/histexpand.c,lib/readline/mbutil.c
        - fix size_t subtractions in comparisons to avoid unsigned underflow

externs.h
execute_cmd.c
builtins/times.h
        - add prototypes for functions taking clock_t and timeval, make their
          declaration in externs.h conditional on NEED_CLOCK_FUNCS_DECL and
          NEED_TIMEVAL_FUNCS_DECL, respectively

                                   3/31
                                   ----
subst.c
        - expand_string_dollar_quote: check for zero-length return from
          string_extract_{single,double}_quoted and avoid size_t underflow
          Fixes asan error reported by Grisha Levit <grishalevit@gmail.com>

                                    4/3
                                    ---
builtins/evalstring.c
        - open_redir_file: treat the case of failing to open the file as a
          non-fatal expansion error instead of a (fatal) redirection error.
          Report from Zev Weiss <zev@bewilderbeest.net>

                                    4/4
                                    ---
lib/readline/vi_mode.c
        - _rl_domove_motion_cleanup: d/D require the same special case as c/C
          so that a motion command that doesn't move the cursor consumes/deletes
          at least one character.
          From Emanuele Torre <torreemanuele6@gmail.com>
        - _rl_domove_motion_cleanup: ditto for y/Y
        - rl_domove_motion_callback: if t/T/;/, fail (return non-zero without
          moving point), flag the motion command as having failed (MOVE_FAILED)

                                    4/6
                                    ---
subst.c
        - command_substitute: save the return status of the child process in
          last_command_subst_status; don't assign to last_command_exit_value
          in posix mode (posix interp 1150)

execute_cmd.c
        - execute_null_command: a simple command without a command word but
          with command substitutions now returns last_command_subst_status.
          It may or may not have already modified $? depending on posix mode

redir.c
        - redir_varvalue: legal_number validity check should be == 0, not < 0
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   4/10
                                   ----
subst.c
        - parameter_brace_expand_rhs: check for namerefs in the variable name
          part of the ${name=word} expansion so we can go back and implement
          the POSIX semantics of returning "the final value of parameter."
          From a report by Grisha Levit <grishalevit@gmail.com>

sig.c,sig.h
        - sigpipe_handler: clean up, set $?, and throw to top level on receipt
          of a SIGPIPE
        - termsig_handler: if the variable builtin_catch_sigpipe is set (it's
          not set anywhere yet), call sigpipe_handler instead of terminating
          the shell. Still need to make sure a sighandler is installed for
          SIGPIPE even if initialize_terminating_signals isn't called

                                   4/14
                                   ----
lib/sh/tmpfile.c
        - sh_mktmpfd: add support for MT_UNLINK flag, unlinks created filename
          before returning fd, fails if the unlink fails for some reason

                                   4/15
                                   ----
pathexp.c,pathexp.h
        - globsort: support for various glob sorting criteria as defined by
          the GLOBSORT variable: name, size, blocks, mtime, atime, ctime.
          Default is ascending sort by name, as is traditional. Based on an
          idea from Evan Gates <evan.gates@gmail.com>
        - setup_globsort: parse the value of the GLOBSORT variable, find
          sorting type and whether or not it's ascending or descending
        - noquote_glob_filename: glob_filename for programmable completion,
          doesn't call quote_string_for_globbing and honors GLOBSORT, dotglob,
          and globstar

pcomplete.c
        - gen_globpat_matches: call noquote_glob_filename, let that handle
          all the variables and GLOB_FAILED

variables.c
        - GLOBSORT: support for special variable, call setup_globsort on
          set or unset

doc/bash.1,doc/bashref.texi
        - GLOBSORT: document variable and its effects on pathname expansion

                                   4/17
                                   ----
builtins/complete.def
        - build_actions: take an additional char ** arg VNAMEP; if it is non-
          null, accept a -V VARNAME option that names an indexed array
          variable in which to store the completions.
        - compgen_builtin: if the -V option is supplied, store the possible
          completions into VARNAME instead of printing them on stdout. From a
          patch from Grisha Levit <grishalevit@gmail.com>, idea originally
          from konsolebox <konsolebox@gmail.com> back in 2/2022

doc/bash.1,lib/readline/doc/rluser.texi
        - compgen: document new -V option

                                   4/18
                                   ----
lib/readline/vi_mode.c
        - rl_domove_read_callback: call _rl_arg_init before reading digit
          argument so prompt gets saved, both callback and non-callback modes
          From a report by Grisha Levit <grishalevit@gmail.com>
        - rl_vi_arg_dispatch: if we return 0 to end the digit argument and
          turn off NUMERICARG, call rl_restore_prompt

lib/readline/histexpand.c
        - history_expand_internal: make sure subst_lhs is not null before we
          call postproc_subst_rhs.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/display.c
        - rl_redisplay: remove redundant code that ends up incrementing lpos
          too much for meta characters displayed as octal escape sequences.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   4/19
                                   ----
bashline.c
        - attempt_shell_completion: handle case where s > e after calls to
          find_cmd_start and find_cmd_end, respectively.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/display.c
        - update_line: fix setting of `wsatend' when computing ols and nls in
          the multibyte case; this caused redisplay to print more characters
          than it needed
        - update_line: fix calculation of visible_wrap_offset when moving up
          to line 0, trying to figure whether or not the visible prompt has
          any invisible characters. Fixes C locale issue reported by
          Grisha Levit <grishalevit@gmail.com>

                                   4/20
                                   ----
lib/readline/text.c
        - _rl_rubout_char: update erase-at-end-of-line hack to deal with the
          unlikely event that a character in a non-multibyte locale is
          displayed using an octal representation.
          From a report by Grisha Levit <grishalevit@gmail.com>

execute_cmd.c,execute_cmd.h,builtins/evalstring.c
        - interrupt_execution: replaces `executing_list'
        - interrupt_execution: set while executing while, for, until, select,
          and arithmetic for loops

jobs.c
        - wait_for: if a process dies due to a SIGINT while the shell is
          executing a loop or a list, act as if the shell got SIGINT. This
          is no longer dependent on the compatibility level
          From a report by Grisha Levit <grishalevit@gmail.com>

bashline.c
        - name_is_acceptable: allow FIGNORE suffixes to match the entire
          pathname like tcsh does instead of requiring a non-empty prefix.
          From Emanuele Torre <torreemanuele6@gmail.com>

                                   4/23
                                   ----
lib/readline/misc.c
        - _rl_unsave_line: new function, takes a HIST_ENTRY * as an argument,
          generalized rl_maybe_unsave_line
        - _rl_alloc_saved_line: allocate a new HIST_ENTRY *, populate it like
          rl_saved_line_for_history
        - _rl_free_saved_line: free a saved HIST_ENTRY *
        - _rl_free_saved_history_line: call _rl_free_saved_line
        - _rl_previous_history_internal: new function, internals of
          rl_get_previous_history; change rl_get_previous_history to call it

lib/readline/history.h
        - HIST_ENTRY_DEFINED: define sentinel if HIST_ENTRY struct defined

lib/readline/rlprivate.h
        - _rl_alloc_saved_line,_rl_free_saved_line,_rl_unsave_line: new extern
          function definitions
        - _rl_free_saved_search_line: new extern definition

lib/readline/search.c
        - _rl_saved_line_for_search: use private storage to save current line,
          avoid clashes with rl_saved_line_for_history
        - _rl_free_saved_search_line,_rl_unsave_saved_search_line: new functions
          to manage _rl_saved_line_for_search
        - noninc_dosearch,_rl_nsearch_abort: clean up _rl_saved_line_for_search
          instead of rl_saved_line_for_history
        - rl_history_search_internal: allocate private _rl_saved_line_for_search;
          unsave or free it as appropriate
        - _rl_history_search_reinit: free up any _rl_saved_line_for_search just
          in case

lib/readline/vi_mode.c
        - rl_vi_search: free _rl_saved_line_for_search, since that's what the
          non-incremental search functions use now
        - rl_domove_read_callback: if we read a numeric argument, then a motion
          character, make sure the motion character is valid before returning
          it and going on
          From a report by minipython <599192367@qq.com>

                                   4/27
                                   ----
lib/readline/display.c
        - _rl_move_cursor_relative: when checking to see whether data is within
          the invisible line, make sure to stay within the invisible line
          line break boundaries
          From a report by minipython <599192367@qq.com>

lib/readline/search.c
        - dispose_saved_search_line: new function, either unsave the saved
          search line (if we're not at the end of the history) or free it
          (if we are). Needs to be immediately followed by call to
          make_history_line_current, which resets rl_undo_list
        - make_history_line_current: change strategy: rely on callers to
          manage _rl_saved_line_for_search and rl_undo_list; just copy the
          data from the passed history entry into the line buffer and reset
          rl_undo_list
        - noninc_dosearch,rl_history_search_internal: call dispose_saved_search_line
          before calling make_history_line_current

lib/readline/misc.c
        - _rl_start_using_history: free the undo list associated with
          _rl_saved_line_for_history, if one exists. Have to watch out for
          this causing pointer aliasing problems, maybe add a call to
          _hs_search_history_data()

                                   4/28
                                   ----
pathexp.c
        - sh_globsort: a sort specifier of `nosort' disables sorting completely

doc/bash.1,doc/bashref.texi
        - GLOBSORT: document `nosort' sort specifier

bashline.c
        - attempt_shell_completion: attempt completion with the empty command
          for a null command word on a line with only whitespace following any
          optional assignment statements
        - attempt_shell_completion: make sure that the start of the command
          word is not after rl_point before calling the programmable completion
          for the initial word.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/histexpand.c
        - history_expand: don't read past the end of the string if it ends with
          an incomplete multibyte character
          From a report by Grisha Levit <grishalevit@gmail.com>

                                    5/1
                                    ---
lib/readline/text.c
        - _rl_insert_char: make sure to return 1 in all cases where there are
          pending bytes accumulating for a multibyte character
        - _rl_insert_char: if the COUNT argument is 0, insert any pending
          bytes read so far. The idea is that these bytes were accumulating
          to compose a possible multibyte character, and the count of 0
          indicates that the current character doesn't contribute to that
          because it's bound to an editing command.
        - rl_insert, rl_quoted_insert: make sure to call _rl_insert_char
          with a 0 count as appropriate to insert any accumulating bytes
          From a patch by Grisha Levit <grishalevit@gmail.com>

sig.c
        - top_level_cleanup,throw_to_top_level: set variable_context to 0, just
          to make sure

execute_cmd.c
        - function_misc_cleanup: new function, runs make_funcname_visible and
          unlink_fifo_list at the end of execute_function, replaces inline
          code
        - uw_function_misc_cleanup: unwind-protect function, just calls
          function_misc_cleanup. Installed by execute_function.
          Partial fix for FUNCNAME bug reported by Grisha Levit <grishalevit@gmail.com>
        - execute_builtin: run unwind-protects if evalnest exeeds max
        - execute_builtin: run unwind-protects if sourcenest exeeds max

parse.y
        - parse_string_to_word_list: set current_token = '\n' on error
        - parse_string_to_word_list: if we're executing and not running in
          parse_and_execute, call top_level_cleanup before we jump to the
          top level. Rest of fix for FUNCNAME bug
        - parse_compound_assignment: set last_read_token and current_token to
          '\n' on parse error. Fix for alias expansion bug reported by
          Grisha Levit <grishalevit@gmail.com>
        - parse_compound_assignment: if we're executing and not running in
          parse_and_execute, call top_level_cleanup before we jump to the
          top level

                                    5/2
                                    ---
jobs.c
        - run_sigchld_trap: don't freeze and unfreeze the jobs list; move it
          to the callers who are running this on SIGCHLD receipt and cannot
          deal with jobs disappearing from the list while they're running
        - waitchld: if we are running the wait builtin, continue to run the
          SIGCHLD trap immediately upon signal receipt, but freeze and
          unfreeze the jobs list around the call to run_sigchld_trap().
          Fixes issue with `jobs' in a SIGCHLD trap not removing jobs from
          the jobs list reported by Guldrelokk <me@rarity.fan>

                                    5/4
                                    ---
input.c
        - fd_to_buffered_stream: make sure buffers[fd2] is non-null before
          turning on SHAREDBUF.
          From Emanuele Torre <torreemanuele6@gmail.com>

eval.c
        - reader_loop: save and restore EOF_Reached around expanding $PS0,
          setting it to 0 for the expansion so it doesn't affect things like
          command substitution.
          From a report by Grisha Levit <grishalevit@gmail.com>

parse.y
        - parse_comsub: handle ${Ccommand; }, where C == space, tab, newline,
          or '|'
        - read_token_word: understand ${Ccommand; } and call parse_comsub to
          parse the contents
        - parse_matched_pair: understand ${Ccommand; } inside another paired
          construct
        - new `funsub' production, like comsub but for ${Ccommand;} nofork
          command substitution

execute_cmd.c
        - execute_simple_command: if we fork because of pipes in or out, clear
          the fifo list, since subshell aren't supposed to inherit fifos

                                    5/8
                                    ---
parser.h
        - PST_FUNSUBST: new parser state, parsing the command in ${Ccommand;}.
          Primarily used to have read_token_word return `}' as a separate
          token even if it's not delimited like a reserved word

subst.h
        - SX_FUNSUB: new flag, tell xparse_dolparen we are parsing the command
          in a ${Ccommand;} nofork command substitution

parse.y
        - xparse_dolparen: handle parsing ${Ccommand;} nofork command
          substitution like parse_comsub
        - read_token: if we're parsing a foreground command substitution,
          treat a word that begins with an unquoted `}' as a `}' token to
          terminate the ${Ccommand;} construct without requiring that the
          close brace be delimited like a reserved word
        - no_semi_successors: add DOLBRACE
        - reserved_word_acceptable: add DOLBRACE

subst.c
        - extract_function_subst: like extract_command_subst, but for nofork
          command substitutions; calls xparse_dolparen with the SX_FUNSUB
          flag to differentiate
        - string_extract_double_quoted,extract_delimited_string,
          extract_heredoc_dolbrace_string,extract_dollar_brace_string,
          param_expand: call extract_function_subst as appropriate
        - function_substitute: like command_substitute, but for nofork command
          substitutions. Just a stub for now

                                   5/11
                                   ----
jobs.[ch]
        - pipeline_saver: already_making_children now saved and restored as
          part of the struct; no longer need a separate variable
        - save_pipeline,restore_pipeline: save already_making_children to struct

parse.y
        - parse_comsub,xparse_dolparen: handle `(' as the first char of a
          funsub (ksh93 supports that)

subst.c
        - function_substitute: complete implementation; handle both funsubs
          and valsubs (need different terminology); dummy up a fake shell
          function so local variables and `return' work; do the right thing
          with process groups
        - executing_funsub: flag for the rest of the shell to know we're
          expanding a funsub; used by parse_and_execute

builtins/evalstring.c
        - parse_and_execute: check executing_funsub to do the right thing with
          alias expansion and posix mode

                                   5/12
                                   ----
doc/bash.1,doc/bashref.texi
        - function substitution (or lambda substitution, or nofork command
          substitution): document

                                   5/15
                                   ----
subst.c
        - function_substitute: make sure to decrement variable_context in the
          unwind-protects since we don't unwind_protect it individually.
          Report from Oguz <oguzismailuysal@gmail.com>

                                   5/17
                                   ----
configure.ac
        - i370 machines cannot use the bash malloc
          Patch from Igor Todorovski <itodorov@ca.ibm.com>

support/signames.c
        - initialize_signames: add support for z/OS signals.
          Patch from Igor Todorovski <itodorov@ca.ibm.com>

lib/glob/smatch.c
        - collseqcmp: new name for collequiv[_wc], that function apparently
          exists in libc on z/OS
          Patch from Igor Todorovski <itodorov@ca.ibm.com>

jobs.c
        - mark_all_jobs_as_dead: make sure to reset js.j_ndead to the right
          number of jobs in the array

execute_cmd.c
        - execute_while_or_until: move call to REAP() after the action
          executes, like other loop functions

shell.c,parse.y,lib/intl/gettextP.h
        - add some __MVS__ checks for z/OS systems

                                   5/18
                                   ----
jobs.c
        - wait_for_any_job: catch jobs that can terminate and be reaped
          when we call UNBLOCK_CHILD between the loop where we check the
          jobs list for dead jobs and the loop where we check for running
          jobs and poll for them with wait_for().
          Fixes bug reported by Aleksey Covacevice <aleksey.covacevice@gmail.com>

                                   5/20
                                   ----
subst.c
        - read_comsub: quote CTLNUL if it's in $IFS and we're parsing the
          RHS of an assignment statement
        - comsub_quote_string: ditto
        - comsub_shouldquote: break code that decides whether to CTLESC escape  
          a character read from a command substitution or $REPLY into its own
          inline function; change read_comsub/comsub_quote_string callers

                                   5/21
                                   ----
subst.c
        - quote_escapes_internal: use ifs_cmap instead of iterating through
          ifs_value to set skip_ctlesc and skip_ctlnul

                                   5/23
                                   ----
parser.h
        - remove `(' from FUNSUB_CHARS

parse.y
        - parse_comsub: don't bother with `(' as one of the FUNSUB_CHARS

doc/bash.1,doc/bashref.texi
        - command substitution: remove mention of `(' as a valid character
          following the open brace in nofork command substitution

                                   5/24
                                   ----
parse.y
        - parse_comsub: avoid adding `;' to an empty ${ command substitution
        - parse_comsub: if open == '{', push back a newline we read into
          peekc to get PS2 prompting right.
          From a report by Grisha Levit <grishalevit@gmail.com>

subst.c
        - skip_double_quoted: pass the SX_COMPLETE flag down to 
          extract_dollar_brace_string in case it contains an unclosed command
          substitution.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   5/25
                                   ----
shell.c
        - make sure shell_initialized is set to 1 before running -c command

make_cmd.c
        - make_function_def: initialize source_file to something other than
          `main' or `environment' if the shell is not interactive.
          From a report from Emanuele Torre <torreemanuele6@gmail.com>

parse.y
        - save_token_state,restore_token_state: save and restore token_to_read
        - read_token_word: if we read EOF in an interactive shell, set
          token_to_read to yacc_EOF and EOF_Reached to 1 so the token will
          be delimited but the next call to read_token returns yacc_EOF
        - handle_ignoreeof: broke the code that checks eof_encountered and
          possibly exceeds the ignoreeof limit out into a separate public
          function, called from handle_eof_input_unit

eval.c
        - reader_loop: if EOF_Reached is set in an interactive shell after
          parse_command and execute_command, and ignoreeof has been enabled,
          check for ignoreeof with handle_ignoreeof and reset EOF_Reached
          back to 0 if we should not exit. This can occur when EOF delimits
          a simple command (simple_command_terminator)
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   5/27
                                   ----
lib/readline/mbutil.c
        - _rl_get_char_len: if SRC is "", make sure to return 0

lib/readline/isearch.c
        - _rl_isearch_callback: if _rl_search_getchar returns EOF, return 1
          to abort search; if it returns with RL_STATE_ISEARCH unset, return
          1 (handling a signal can turn it off via _rl_isearch_cleanup)

                                   5/29
                                   ----
lib/readline/text.c
        - _rl_insert_char, rl_quoted_insert: minor fixes from Grisha Levit

builtins/printf.def
        - bexpand: use the same calculation for the size of the return buffer
          as ansicstr().
          From a report by Grisha Levit <grishalevit@gmail.com>

locale.c
        - locale_setblanks: work around problem with macOS where isblank(x)
          incorrectly returns true for characters 0x80-0xff in a UTF-8 locale
          From a report by Grisha Levit <grishalevit@gmail.com>
        - set_default_locale_vars,set_locale_vars,reset_locale_vars: make sure
          we call locale_setblanks after setting/resetting locale_utf8locale,
          since we use that in locale_setblanks

lib/sh/smatch.c
        - charseqcmp,is_cclass,FOLD: make sure we don't treat chars >= 0x80
          as valid in a UTF-8 locale, since they are multibyte characters.
          From a report by Grisha Levit <grishalevit@gmail.com> with a full
          explanation in http://www.openradar.me/FB9973780

                                   5/30
                                   ----
builtins/enable.def
        - enable_builtin: don't call dlopen with a null pathname, it will
          succeed. Report from Wiley Young <wyeth2485@gmail.com>

lib/readline/readline.c
        - _rl_dispatch_subseq: if a user binds do-lowercase-version to something
          that isn't an uppercase character, flag an error rather than recurse.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   5/31
                                   ----
builtins/enable.def
        - enable_builtin: don't try to load a builtin that's not found if
          the -n flag is supplied.
          From a report from Emanuele Torre <torreemanuele6@gmail.com>

parse.y
        - parse_comsub: use was_word code again to make sure we add a closing
          `;' if the last token parsed before the closing ';' or '\n' was a
          word, no matter what character ends it.
          From a report by Grisha Levit <grishalevit@gmail.com>

aclocal.m4,configure.ac,findcmd.c
        - IBM z/OS changes from Igor Todorovski <itodorov@ca.ibm.com>

                                    6/1
                                    ---
parse.y
        - shell_getc: if the shell is not interactive and reading from a
          buffered stream or stdin, and not expanding an alias, add a
          backslash to a line ending with <backslash><EOF> like we do when
          reading from a string. This prevents a backslash-newline from
          being discarded when we are removing backslash-newlines from the
          input, since we will add a newline to shell_input_line in this case.
          From a report by Rob Landley <rob@landley.net>

parse.y
        - parse_compound_assignment: check and compensate for an alias being
          popped out from underneath this function by read_token() (e.g.,
          alias L='m=("x")'. Since we don't push a new input source, we should
          never restore pushed_string_list from the saved parser state, but
          we check and only do this if we were expanding an alias when this
          function was called.
          From a report by Wiley Young <wyeth2485@gmail.com>

                                    6/2
                                    ---
print_cmd.c
        - print_if_command: make sure to print any pending here-documents after
          printing the test.
          From https://bugzilla.redhat.com/show_bug.cgi?id=2211214

builtins/enable.def
        - if -n is supplied with -f, attempt to load the builtin but mark it
          as disabled after loading.
          Suggested by Robert Elz <kre@munnari.OZ.AU>

builtins/evalfile.c
        - _evalfile: increment retain_fifos, so we don't delete any FIFOs or
          pipes we inherited before sourcing this file; restore original value
          before we return.
          From https://savannah.gnu.org/support/index.php?110883

                                    6/3
                                    ---
subst.c
        - expand_string_dollar_quote: if singlequote_translations is set, there
          is a chance for a use-after-free of `t'.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                    6/7
                                    ---
jobs.c,nojobs.c,jobs.h
        - job_control_active_p: new function, returns 1 if job control is
          currently enabled and we have given away the terminal

builtins/evalstring.c
        - should_suppress_fork: don't optimize away the fork if job control is
          active because we need to call end_job_control and give the terminal
          back to the original process group when this command finishes. Call
          job_control_active_p() to check this.
          Report from Andrew Hamon <and.ham95@gmail.com>

                                    6/8
                                    ---
shell.c
        - ssh_run_startup_files: new variable, set by run_startup_files if
          the shell decides it's being run by ssh and runs bashrc (only if
          SSH_SOURCE_BASHRC is defined). Non-zero while the startup files
          are being run. Not used by any other part of the shell yet.

                                   6/12
                                   ----
arrayfunc.h
        - new inline functions to convert between assignment flags (ASS_*),
          array value flags (AV_*), and valid array flags (VA_*)

shell.h
        - include arrayfunc.h after subst.h and variables.h so all the values
          for the new inline functions are available

variables.c
        - bind_int_variable: use convert_assign_flags_to_validarray_flags and
          convert_assign_flags_to_arrayval flags instead of inline assignments

builtins/common.c
        - builtin_bind_variable: use convert_assign_flags_to_validarray_flags
          instead of inline assignments

arrayfunc.c
        - assign_array_element: use convert_assign_flags_to_arrayval_flags
          instead of inline code
        - assign_array_element_internal: use convert_assign_flags_to_arrayval_flags
          to pass the right values to array_expand_index
        - assign_array_var_from_string: since expand_compound_array_assignment
          performs one round of expansion on the subscripts, make sure to add
          ASS_NOEXPAND (if assoc_expand_once is set) and ASS_ALLOWALLSUB to the
          flags we pass to assign_compound_array_list
        - unbind_array_index: use convert_validarray_flags_to_array_value_flags
          to pass the right values to array_expand_index
        - array_expand_index: uncomment code tagged for bash-5.3 that checks
          AV_NOEXPAND and suppresses call to expand_arith_string if it's set.
          This set of changes extends assoc_expand_once to indexed arrays

arrayfunc.[ch],execute_cmd.c,expr.c,test.c,builtins/common.c,builtins/mkbuiltins.c
builtins/declare.def,builtins/set.def,builtins/shopt.def
        - array_expand_once: new name for internal assoc_expand_once variable

                                   6/13
                                   ----
builtins/shopt.def
        - array_expand_once: new option, replaces assoc_expand_once

doc/bash.1,doc/bashref.texi
        - array_expand_once: document new shopt option

                                   6/15
                                   ----
lib/readline/complete.c
        - rl_full_quoting_desired: new application-settable variable, if set
          to non-zero by an application completion function, all completions
          will be quoted as if they were filenames, subject to the value of
          rl_filename_quote_characters. Initialized to 0 and reset to 0
          by set_completion_defaults.
          From a contribution by Grisha Levit <grishalevit@gmail.com>
        - QUOTING_DESIRED: new macro to check whether we should quote completions

lib/readline/readline.h
        - rl_full_quoting_desired: extern declaration

lib/readline/doc/rltech.texi
        - rl_full_quoting_desired: document

configure.ac
        - bumped version to 5.3-devel

pcomplete.h
        - COPT_FULLQUOTE: new compspec option, for rl_full_quoting_desired

pcomplete.c
        - pcomp_set_readline_variables: set rl_full_quoting_desired according
          to COPT_FULLQUOTE

builtins/complete.def
        - fullquote: add new complete/compopt option value

doc/bash.1,lib/readline/doc/rluser.texi
        - fullquote: document new complete/compopt option

lib/sh/timeval.c
        - timeval_to_secs: sfp argument is now a long *; there is a new
          maxval argument (always 10^6 for now) that determines how to
          round; returns tv_usec in *sfp if maxval == 10^6; otherwise
          return value is basically tv_usec/maxval with rounding
        - print_timeval: change argument type in call to timeval_to_secs

lib/sh/clock.c
        - clock_t_to_secs: sfp argument is now a long *
        - print_clock_t: change argument type in call to clock_t_to_secs

externs.h
        - timeval_to_seconds, clock_t_to_seconds: change prototypes

execute_cmd.c
        - mkfmt,print_formatted_time: fractional seconds arguments are now
          longs
        - mkfmt: accept precisions up to 6; since sec_fraction is in usecs,
          perform any necessary rounding for precisions < 6
        - print_formatted_time: allow precision specifiers up to 6; default
          is still 3
        - time_command: fractional seconds variables are now long; add new
          argument to timeval_to_secs (always 1000000)
        - time_command: if we call clock_t_to_secs, multiply the return
          fractional seconds value by 1000 to convert it from msec to usec

doc/bash.1,doc/bashref.texi
        - TIMEFORMAT: document that the max precision is now 6
          From https://savannah.gnu.org/support/?110343

                                   6/16
                                   ----
variables.c
        - get_monoseconds: use clock_gettime to return the value of the
          system's monotonic clock, if available
        - BASH_MONOSECONDS: a new dynamic variable that returns the value of
          get_monoseconds
          From a suggestion by William Kennington <wak@google.com>

doc/bash.1,doc/bashref.texi
        - BASH_MONOSECONDS: document

trap.c
        - save_bash_trapsig,set_bash_trapsig,restore_bash_trapsig: functions
          to manage value of BASH_TRAPSIG
        - run_pending_traps: save and restore the value of BASH_TRAPSIG; set
          it to the numeric signal number of the trap being run while it's
          executing
          From a feature request by Eric Marceau <ericmarceau@rogers.com>
        - _run_trap_internal,run_exit_trap: save and restore BASH_TRAPSIG;
          make sure it's set appropriately

doc/bash.1,doc/bashref.texi
        - BASH_TRAPSIG: document

builtins/declare.def
        - declare_internal: if declare is supplied -f and an argument that
          looks like an assignment statement, fail only if there is not a
          function with that name already defined.
          From a report from Emanuele Torre <torreemanuele6@gmail.com>
          back in 12/22

jobs.c
        - wait_for: make checkwinsize work in subshell commands started from
          interactive shells
          New feature request by Kerin Millar <kfm@plushkava.net>

print_cmd.c
        - semicolon: don't return immediately unless a preceding `&' is
          itself preceded by a space, as the rest of the printing code prints
          asynchronous commands.
          Report and patch by Grisha Levit <grishalevit@gmail.com>

                                   6/17
                                   ----
arrayfunc.c
        - arrayvar_copyval: copy an array or hash table from shell variable
          V1 to V2

arrayfunc.h
        - arrayvar_copyval: extern declaration

subst.h
        - ASS_NOTEMPENV: new flag for bind_variable and assignments

variables.c
        - bind_variable: if ASS_NOTEMPENV is in FLAGS, don't bother calling
          bind_tempenv_variable

builtins/declare.def
        - declare_internal: if we find the variable in the temporary
          environment, call bind_variable with the ASS_NOTEMPENV flag since
          we are already dealing with a variable from the temporary environment
        - declare_internal: if we bind a new global variable because we're
          modifying a variable from the temporary environment, make sure to
          call arrayvar_copyval to copy array variables from the temporary
          environment to the global scope

variables.c
        - push_temp_var: if we are pushing an array variable, make sure to
          call arrayvar_copyval on the new variable
          Final fix for bug reported by Wiley Young <wyeth2485@gmail.com>
        - push_posix_tempvar_internal: call arrayar_copyval instead of using
          inline code

                                   6/19
                                   ----
lib/sh/shmatch.c
        - sh_regmatch: use builtin_find_indexed_array to allow a local copy
          of BASH_REMATCH.
          From https://lists.gnu.org/archive/html/bug-bash/2022-05/msg00052.html

execute_cmd.c
        - execute_in_subshell: tentative change to clear procsub list after
          performing redirections, so nothing in a redirection can affect
          what's in the subshell.
          From https://lists.gnu.org/archive/html/bug-bash/2022-10/msg00114.html

test.c
        - binary_operator: in posix mode, the < and > operators compare strings
          using the current locale (strcoll).
          From https://www.austingroupbugs.net/view.php?id=375

bashline.c
        - bash_default_completion: make sure that command completion adds the
          trailing `/' suffix for directories even if the directory name is
          the same as the common prefix of matches.
          From https://lists.gnu.org/archive/html/bug-bash/2022-11/msg00034.html

lib/readline/kill.c
        - rl_vi_yank_pop: make repeated invocations of vi-yank-pop cycle
          through the kill ring just like in emacs mode, even when point
          is at the end of the line.
          From https://lists.gnu.org/archive/html/bug-bash/2022-08/msg00105.html

parse.y
        - parse_comsub: set variables if the last token (last_read_token) is
          `;', `\n', or `&', in addition to was_word
        - parse_comsub: if the last read token was a newline (was_newline),
          terminate the comsub with a newline instead of a semicolon; keeps
          the line numbers more consistent.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/sh/anonfile.c
        - anonopen: use memfd_create if it is available, fall through to
          traditional Unix/POSIX implementation if it fails

                                   6/20
                                   ----
parse.y
        - yy_string_unget: don't push EOF back to a string, like the other
          unget functions

                                   6/21
                                   ----
parse.y
        - read_a_line: don't push an EOF back into the string or line if the
          line ends in a backslash.
          From a report by Rob Landley <rob@landley.net>

                                   6/22
                                   ----
lib/readline/input.c
        - rl_gather_tyi: make sure result is initialized

lib/readline/kill.c
        - _rl_read_bracketed_paste_prefix: make sure key is initialized

builtins/read.def
        - read_builtin: make sure pass_next and saw_escape are initialized
          before a possible goto
        - read_builtin: make sure to initialize prevset for very short
          timeouts

subst.c
        - function_substitute: make sure tflag is initialized even when we
          don't call read_comsub, since we return it in ret->flags
          All from a report by Grisha Levit <grishalevit@gmail.com>

builtins/complete.def
        - compgen_builtin: use array_from_argv to assign elements of the
          stringlist to the array variable.
          Update from Grisha Levit <grishalevit@gmail.com>

builtins/cd.def
        - bindpwd: fix seg fault from an unlikely set of circumstances
          From a report by Grisha Levit <grishalevit@gmail.com>

arrayfunc.h
        - convert_validarray_flags_to_arrayval_flags: initialize avflags
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/sh/anonfile.c
        - anonopen: set *fn if memfd_create is used
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   6/23
                                   ----
arrayfunc.c
        - bind_assoc_var_internal: free key to fix small leak if assign_func
          used
        - quote_compound_array_word: free value to fix small leak

builtins/evalstring.c
        - parse_and_execute: free parsed command on failed function definition
          import
        - open_redir_file: free FN if we're not passing it back to the caller

subst.c
        - param_expand: free TEMP1 in code paths that don't do it now

bashline.c
        - bash_command_name_stat_hook: if we modify *NAME, free the old value

examples/loadables/{kv,stat}.c
        - bind_assoc_variable is caller-free VALUE, so free when needed and
          don't allocate a new copy if not
          All from a report by Grisha Levit <grishalevit@gmail.com>

                                   6/24
                                   ----
lib/readline/complete.c
        - rl_menu_complete: use _rl_free_match_list instead of just freeing
          MATCHES if we have too many possible completions to display.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   6/25
                                   ----
eval.c
        - reader_loop: make sure to allow exit builtin (code == EXITBLTIN) to
          exit the shell when ignoreeof is set
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   6/26
                                   ----
lib/readline/complete.c
        - complete_sigcleanarg_t: new struct to hold match list and saved line
          buffer for cleanup on receipt of SIGINT
        - _rl_complete_sigcleanup: use new sigcleanarg_t struct and free both
          members
        - rl_complete_internal: whenever we display the match list, set up to
          clean the matches and saved line buffer in the event of a SIGINT
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/signals.c
        - _rl_handle_signal: if readline is compiled to include callbacks, only
          call rl_echo_signal_char if we're not in callback mode or the
          application has set rl_persistent_signal_handlers, leaving any
          application signal handler to call it (or not) otherwise.
          From a discussion with Andrew Burgess <aburgess@redhat.com>

lib/glob/glob.c
        - glob_filename: if ARRAY == TEMP_RESULTS, make sure to free TEMP_RESULTS
          after copying the filenames out of ARRAY, since we either assigned it
          directly or glob_dir_to_array returned it because the dirname was
          the empty string.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/rltypedefs.h
        - Function: only compile in these obsolete typedefs if
          WANT_OBSOLETE_TYPEDEFS is defined

print_cmd.c
        - xtrace_print_assignment,xtrace_print_word_list: prioritize checking
          for characters that need $'...' printing over shell metacharacters
          so that strings containing both get the $'...' treatment
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   6/27
                                   ----
subst.c
        - skip_double_quoted: make sure to call extract_function_subst with
          the SX_NOALLOC flag
          From a report by Grisha Levit <grishalevit@gmail.com>

trap.c
        - _run_trap_internal: if we're running a trap but shell_eof_token is
          set, this means we're somehow running a trap while parsing a
          command substitution (weird set of circumstances). Call
          reset_parser and unset shell_eof_token if shell_eof_token is set
          From a report by Wiley Young <wyeth2485@gmail.com>

builtins/setattr.def
        - set_var_attribute: don't set the att_propagate attribute unless the
          variable whose attribute is being modified is in the temporary
          environment for this builtin, not any previous temporary environments
          (like the temp env for a function call, or a special builtin like
          `.')

variables.c
        - push_posix_temp_var: if we have an array variable we're trying to
          push up here, use arrayvar_copyval to copy the value correctly

arrayfunc.c
        - arrayvar_copyval: make sure that V2 ends up being the same type of
          array as V1 (att_array or att_assoc), since we're copying the value.
          Fixes issue reported by Grisha Levit <grishalevit@gmail.com>, but
          with the previous fix to set_var_attribute, it's not needed
        - assign_compound_array_list: check for integer overflow if the max
          index of the array is already INT_MAX.
          From a report from Emanuele Torre <torreemanuele6@gmail.com>
        - assign_array_var_from_word_list: ditto

                                   6/28
                                   ----
pcomplete.c,bashline.c
        - uw_restore_parser_state,uw_rl_set_signals: move to bashline.c so the
          general readline support can use them

bashline.h
        - uw_restore_parser_state,uw_rl_set_signals: extern declarations

bashline.c
        - unset_readline_variables,uw_unset_readline_variables: function to
          unset READLINE_{LINE,POINT,MARK,ARGUMENT} and its unwind-protect
          counterpart
        - bash_execute_unix_command: add unwind-protect to free up allocated
          memory
          Report and patch by Grisha Levit <grishalevit@gmail.com>

doc/bash.1,doc/bashref.texi
        - BASH_ARGC,BASH_ARGV,BASH_SOURCE,BASH_LINENO: note that these variables
          may not be assigned to or unset

                                   6/29
                                   ----
builtins/declare.def
        - declare_internal: attempting to assign to a noassign variable is no
          longer an assignment error; the attempt is just ignored

arrayfunc.c
        - find_or_make_array_variable: take a new flag value, 4: means to
          return noassign variables as themselves instead of NULL without
          performing the assignment so the caller can handle them differently.
        - assign_array_from_string: pass flags & 4 to find_or_make_array_variable
          so we can simply ignore attempted assignments to noassign array
          variables instead of treating them as assignment errors
          From a report by Kerin Millar <kfm@plushkava.net>

expr.c
        - exppower: only report negative exponent error if noeval == 0.
          Fixes issue reported by Steffen Nurpmeso <steffen@sdaoden.eu>

                                   6/30
                                   ----
lib/sh/anonfile.c
        - anonopen: add support for using shm_open or shm_mkstemp to create
          an anonymous file using POSIX shared memory

configure.ac
        - if --enable-static-link is supplied, add -static to LDFLAGS on
          Linux if opt_profiling isn't enabled
          From a report from Emanuele Torre <torreemanuele6@gmail.com>

print_cmd.c
        - make_command_string_internal: if we're recursively printing a list
          (connection) with more than two elements, don't print any deferred
          here-documents after the make_command_string_internal on the right
          side of the connection unless we're at the end of the list
          (printing_connection == 1). This way the caller gets to add the
          appropriate connector before printing the deferred here-documents.
          From a report by Grisha Levit <grishalevit@gmail.com>
        - make_command_string_internal,print_group_command: after we call
          PRINT_DEFERRED_HEREDOCS and follow it with a closing `)' (subshell)
          or `}' (group command), we can set was_heredoc to 0 because we are
          no longer printing a here-document
          From a report by Grisha Levit <grishalevit@gmail.com>

                                    7/3
                                    ---
lib/readline/complete.c
        - rl_username_completion_function: simplify things by just skipping the
          function body if HAVE_GETPWENT is not defined.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/sh/ufuncs.c
        - fsleep: broke into three functions: nsleep, which uses nanosleep,
          ssleep, which uses select/pselect, and ancientsleep, which uses
          sleep. Prefer nanosleep, use the others depending on what's
          defined.
          From a report and patch by Grisha Levit <grishalevit@gmail.com>

arrayfunc.c
        - assign_compound_array_list: now behaves more like a series of
          assignment statements (a=(one two) is more like a[0]=one a[1]=two)
          in terms of error handling -- break after the first invalid
          assignment -- and return value -- now return int, 0 on failure and
          1 on success so the callers can throw assignment errors
        - assign_compound_array_list: if we have an explicit [subscript]=value
          assignment, use the negative-indices-count-back-from-the-end strategy;
          otherwise use last_ind and throw an error on overflow. This is like
          standalone assignment statements
        - assign_array_var_from_string: catch new return value from
          assign_compound_array_list; return NULL if assign_compound_array_list
          returns failure

subst.c
        - do_compound_assignment: if assign_compound_array_list or
          assign_array_var_from_string return error (0 or NULL, respectively),
          treat as an assignment error similar to assigning to a readonly
          variable
          Inspired by a report from Emanuele Torre <torreemanuele6@gmail.com>

arrayfunc.h
        - assign_compound_array_list: new return type

                                    7/5
                                    ---
builtins/enable.def
        - enable_builtin: make sure dynamic builtin loading and unloading
          updates the `enabled' and `disabled' programmable completion lists.
          From a report and patch by Grisha Levit <grishalevit@gmail.com>

doc/bash.1,doc/bashref.texi
        - hash: add note that assigment to PATH clears the hash table.
          Report by Sebastian Carlos <sebaaa1754@gmail.com>

lib/readline/complete.c
        - rl_filename_completion_function: make sure the results of
          *rl_filename_rewrite_hook are freed consistently if the function
          returns newly-allocated memory
          From a report and patch by Grisha Levit <grishalevit@gmail.com>
          back in May

                                    7/6
                                    ---
builtins/cd.def
        - cd_builtin: if $OLDPWD is set by the user or script to something
          that's not a full pathname, allow it to use $CDPATH.
          From a report by Dustin Boyd <chronokitsune3233@gmail.com>

                                    7/7
                                    ---
shell.h
        - user_info: add members for saved uid and saved gid

shell.c
        - uidget: if we have setresuid/setresgid, get the saved uid and saved
          gid so we can set them if we disable privileged mode
        - disable_priv_mode: only call setuid/setresuid and setgid/setresgid
          if the euid (egid) != uid (gid). If we have setresuid/setresgid,
          add a check whether the saved uid (gid) isn't the same as the real
          uid (gid). Potentially saves a couple of system calls.
          Fixes Android issue, patch by Grisha Levit <grishalevit@gmail.com>

test.c
        - unary_operator: only support historical handling of -t and its
          optional argument when not in posix mode
        - unary_test: print an error if the argument to -t is not a number
        - unary_operator: only make the argument to -t optional if the
          next argument is -a or -o and we are using the historical algorithm
          (argc >= 5), otherwise force it to be a number and print an error
          message if it's not
          From a report by Stephane Chazelas <stephane@chazelas.org>

doc/bash.1,doc/bashref.texi
        - added note about test/[ sorting using the current locale with the
          `<' and `>' operators when in posix mode
        - added note about the integer argument to test -t being required
          when in posix mode
        - added note recommending against the use of test with 5 or more
          arguments in favor of combining multiple instances of test with
          && or ||
          From a report by Stephane Chazelas <stephane@chazelas.org>

                                   7/10
                                   ----
jobs.c
        - start_job: turn off (on) the J_ASYNC flag depending on whether the
          job is being started in the foreground (background). It matters now
          that we use IS_ASYNC to determine whether to give the terminal
          back to the shell's process group.
          From a report by Grisha Levit <grishalevit@gmail.com>

bashline.c
        - command_word_completion_function: if we have a glob pattern that
          expands to multiple words, dispose of the list before returning NULL.
          From a report by Grisha Levit <grishalevit@gmail.com>

variables.c
        - makunbound: if we're unsetting a local variable, preserve the export
          attribute even if the variable's not in the temporary environment
          Tentative fix, compatible with other POSIX shells (except the BSD
          variants of ash)

                                   7/12
                                   ----
lib/sh/unicode.c
        - include <langinfo.h> if HAVE_LANGINFO_CODESET is defined, use
          nl_langinfo (CODESET) if HAVE_LANGINFO_CODESET is define, since
          we no longer check for nl_langinfo. This is what locale.c does.

                                   7/15
                                   ----
lib/readline/display.c
        - rl_redisplay: rudimentary code to handle some cases where the line
          buffer consumes more than the physical number of screen lines. It's
          not a screen editor, but it handles some of the common cases.
          From https://bugs.launchpad.net/ubuntu/+source/bash/+bug/2024628

                                   7/17
                                   ----
builtins/printf.def
        - getwidestr: make sure to force mbsrtowcs to convert the closing NULL
          so the wide-character string is NULL-terminated.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/sh/shmatch.c
        - strregerror: new function to return regerror(3) error message text
          in allocated memory
        - sh_regmatch: add an additional argument to hold the error message
          from regerror(3), in newly-allocated memory; generated by call to
          strregerror() on regcomp(3) failure
          From a patch by Grisha Levit <grishalevit@gmail.com>

externs.h
        - sh_regmatch: update extern declaration

execute_cmd.c
        - execute_cond_node: pass pointer to buffer to return any error
          message; if sh_regmatch returns 2, use a non-NULL error buffer in
          the error message.

lib/readline/bind.c
        - _rl_get_string_variable_value: return the values for
          active-region-start-color (_rl_active_region_start_color) and
          active-region-end-color (_rl_active_region_end_color) if they
          are set.
          Fixes bind -v issue reported by Sebastian Carlos <sebaaa1754@gmail.com>
        - _rl_get_string_variable_value: if the history is stifled, make
          sure we report the history size as < 0 so the output of bind -v
          can be reused as input.
          Fixes bind -v issue reported by Sebastian Carlos <sebaaa1754@gmail.com>

                                   7/20
                                   ----
pathexp.c
        - quote_string_for_globbing: don't bother backslash-quoting multibyte
          characters. It matters for macOS and doesn't make a difference for
          other systems, and those aren't going to be special globbing chars.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/glob/glob.c
        - glob_vector: normalize the pattern with fnx_fromfs so we make sure
          it's also in NFC on macOS (other systems don't care). This is a
          POSIX violation, but part of correcting the longtime HFS+ (and Finder)
          misfeature

lib/readline/complete.c
        - rl_filename_completion_function: if the application sets a filename
          rewrite hook, use it to rewrite the filename we're matching as well
          as filenames read with readdir().
          [SUPERSEDED BY CHANGE OF 10/4/2023]
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   7/21
                                   ----
pathexp.c
        - quote_string_for_globbing: see if we can get away without backslash-
          quoting single-byte characters that aren't CTLESC or characters
          that are special to EREs or BREs, even if they're quoted

bashline.c
        - bashline_set_filename_hooks: convenience function to set the
          directory hook and the filename rewrite and stat hooks; call from
          other places in the file so these are set consistently

bashline.h
        - bashline_set_filename_hooks: extern declaration

builtins/complete.def
        - compgen_builtin: make sure to set the directory and filename hooks
          so compgen called from a script works more like compgen called
          from a word completion context.
          Inspired by a report by Grisha Levit <grishalevit@gmail.com>

doc/Makefile.in
        - bash.pdf: use groff -T pdf to create, instead of creating postscript
          and then using ghostscript

                                   7/24
                                   ----
jobs.c
        - start_job: unconditionally send SIGCONT to the job we just started,
          even if we think it was already running, to reduce the window for a
          potential race condition, and only change the state to RUNNING if
          the SIGCONT succeeds or if the process has terminated so we can
          clean it up later.
          Report from Earl Chew <earl_chew@yahoo.com>

make_cmd.c
        - make_simple_command,make_bare_simple_command: now take line number as
          an argument; used instead of line_number to set the line associated
          with the simple command

make_cmd.h
        - make_simple_command,make_bare_simple_command: change prototype

parse.y,builtins/command.def,builtins.jobs.def
        - make_simple_command,make_bare_simple_command: change callers

                                   7/25
                                   ----
parse.y
        - read_token_word: try to keep track of whether we are parsing the
          first word of a simple command and set simplecmd_lineno if we
          are. We start a simple command when we return ASSIGNMENT_WORD
          or WORD in a command token position. This gives better values for
          $LINENO in multi-line simple commands
        - redirection: set simplecmd_lineno if it's -1, meaning this is a
          simple command with a leading redirection or a null command with
          only a redirection
        - pass simplecmd_lineno to make_simple_command if we are starting a
          simple command (the first ELEMENT)
        - parse_comsub,xparse_dolparen: save and restore simplecmd_lineno
        - simple_command,function_def production: reset simplecmd_lineno to -1
          after parsing a simple command or a function declared as WORD()

                                   7/26
                                   ----
doc/bash.1,doc/bashref.texi
        - xpg_echo: add description of how this can be used to suppress echo
          option interpretation
          Inspired by report from Zachary Santer <zsanter@gmail.com>

                                   7/27
                                   ----
builtins/printf.def
        - printf_erange: make out-of-range errors conversion errors even if
          the conversion function fully consumes the argument.
          From a report by thomas@habets.se

                                   7/31
                                   ----
lib/readline/rltypedefs.h
        - rl_macro_print_func_t: typedef for a function to print macro key
          bindings

lib/readline/bind.c
        - rl_macro_display_hook: hook function to call if the application
          wants to display a key sequence bound to a macro
        - rl_macro_dumper: if rl_macro_display_hook is non-NULL, call it to
          display the macro value (after `untranslating' it to add back any
          required backslashes)

lib/readline/doc/rltech.texi
        - rl_macro_display_hook: add description

pathexp.c
        - glob_char_p: add the characters that are special within BRE bracket
          expressions.
          Inspired by a report by Grisha Levit <grishalevit@gmail.com>

bashline.c
        - bind_keyseq_to_unix_command: allow whitespace to separate the keyseq
          and the command string, but require the command string to be
          surrounded by double quotes if it is. If we get a whitespace
          separator, call rl_macro_bind so we get the string `translated'
          according to how readline does it (backslash-escape sequences
          processed, etc.)
        - print_unix_command: function to print a key sequence and a unix
          command bound to it from cmd_xmap, using a space separator
        - print_unix_command_map: make sure to set rl_macro_display_hook to
          print_unix_command before calling rl_macro_dumper to print the
          bound command strings

                                    8/1
                                    ---
builtins/read.def
        - read_builtin: saw_escape is now a count of CTLESCs we added to the
          input
        - read_builtin: since we increment saw_escape when we add a CTLESC,
          decrement it when we remove one from the input (\\\n, \\\0)
        - read_builtin: remove the CTLESC we added if we have a backslash-
          escaped NULL character ('\0')
        - read_builtin: if the input ends with an unescaped newline, remove
          the CTLESC we added
          From a report by Grisha Levit <grishalevit@gmail.com>

                                    8/2
                                    ---
builtins/history.def
        - history_builtin: if history -[anrw] is used without a filename
          argument, and HISTFILE is unset or null, return success immediately
          From a report by Grisha Levit <grishalevit@gmail.com>

doc/{bash.1,bashref.texi},lib/readline/doc/hsuser.texi
        - history: document that if filename is not supplied, and HISTFILE is
          unset or null, the [-anrw] options have no effect

                                    8/3
                                    ---
pcomplete.c
        - gen_progcomp_completions: if the actual compspec that's run is
          something different from what's typed (full pathname, alias, etc.),
          set pcomp_curcmd to the word corresponding to the actual compspec,
          instead of what was typed. This is what eventually gets used by
          the compopt builtin's output.
          From a report by Grisha Levit <grishalevit@gmail.com>

execute_cmd.c
        - execute_coproc: in parent, close /dev/fd FIFOs only if we're not
          executing a shell function, like other calls to unlink_fifo_list().
          Report from Hal Blackburn in
          https://savannah.gnu.org/support/index.php?110910

subst.c
        - do_compound_assignment: don't attempt to convert a global associative
          array to an indexed array with declare -g.
          From a report and patch by Grisha Levit <grishalevit@gmail.com>

                                    8/7
                                    ---
lib/readline/bind.c
        - rl_print_keybinding: new function, prints a the key bindings for a
          single function specified by name
        - rl_function_dumper: call rl_print_keybinding for every function name

lib/readline/readline.h
        - rl_print_keybinding: extern declaration

lib/readline/bind.c
        - _rl_untranslate_macro_value: make sure characters betweeen 128 and
          159 (metafied control characters) are printed using the \M-\C-
          notation instead of directly writing the control character.
          From a report and patch by Grisha Levit <grishalevit@gmail.com>
        - rl_get_keyname: if a key binding shadows a function or macro, print
          the ANYOTHERKEY binding as a null string
          From a report and patch by Grisha Levit <grishalevit@gmail.com>
        - rl_untranslate_keyseq: make changes analogous to
          _rl_untranslate_macro_value so that we don't print control characters
          directly
        - rl_invoking_keyseqs_in_map: if the key corresponds to a keymap, use
          _rl_get_keyname to get its text representation, so this function
          returns consistent results
        - rl_translate_keyseq: if convert-meta is on, don't convert meta chars
          that are, e.g., \M-\C-@ (128) into \e followed by a NUL, resulting
          in truncated key sequences. Just don't honor convert-meta in this
          case

                                    8/8
                                    ---
bashhist.c
        - bash_history_no_expand_chars: add the rest of the shell
          metacharacters so we don't get empty history events; tcsh does more
          or less the same thing
          Inspired by a report from Emanuele Torre <torreemanuele6@gmail.com>

                                    8/9
                                    ---
parse.y
        - grammar: change bare `time' and `!' productions to use nullcmd_terminator,
          which is a list_terminator or a `&' to allow things like `time &'
          and `! &' which the original version of POSIX interp 267 (the one
          I implemented) says we should support

                                   8/11
                                   ----
m4/bison.m4,m4/flexmember.m4,m4/locale_h.m4
    - new m4 files from gettext-0.21.1

m4/gettext.m4,m4/intl.m4
m4/{codeset,extern-inline,fcntl-o,glibc2,glibc21,host-cpu-c-abi,iconv,intdiv0}.$
m4/{intl-thread-locale,intlmacosx,intmax,inttypes-pri,inttypes,inttypes_h}.m4
m4/{lcmessage,lib-ld,lib-link,lib-prefix,locale_h,lock,nls,po,printf-posix}.m4
m4/{progtest,pthread_rwlock_rdlock,size_max,stdint_h,strtoimax,threadlib}.m4
m4/{uintmax_t,ulonglong,visibility,wchar_t,wint_t,xsize}.m4
    - updated m4 files from gettext-0.21.1
        
configure.ac,config.h.in
        - updated autoconf files with changes for gettext-0.21.1

MANIFEST
        - updated distribution manifest with new files from gettext-0.21.1

lib/sh/unicode.c
        - u32cconv: prefer nl_langinfo to locale_charset like locale.c:
          locale_isutf8()

execute_cmd.c
        - uw_restore_lineno: an unwind-protect fuction to restore a saved
          line_number
        - execute_command: add an unwind-protect to restore line_number in
          case execute_simple_command longjmps back to top_level or a
          return context.
          Side effect of https://savannah.gnu.org/support/index.php?110919
        - execute_for_command, execute_select_command, execute_case_command:
          add unwind-protect to restore line_number (could also do it for
          if, while, until but those don't modify line_number)
        - execute_command_internal: add_unwind_protect to restore line number
          for arith, cond, function def commands

                                   8/14
                                   ----
execute_cmd.c
        - execute_simple_command: don't call savestring on the_printed_command_except_trap
          if it's NULL.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   8/15
                                   ----
lib/readline/rltty.c
        - prepare_terminal_settings: replace USE_XON_XOFF macro with private
          variable _rl_use_tty_xon_xoff (initially set to 1); if it's set to
          0 disable the tty start and stop characters. Prep for making it a
          bindable variable setting

builtins/read.def
        - edit_line: now takes a third argument saying whether or not to
          set rl_attempted_completion_function to NULL to use readline's
          default filename completion (the default)
        - read_builtin: new option -E to use readline and use the bash
          default completion (that is, leave rl_attempted_completion_function
          unchanged)
          From a suggestion by konsolebox <konsolebox@gmail.com> back in 5/2021


doc/bash.1,doc/bashref.texi
        - read: document new -E option

                                   8/17
                                   ----
aclocal.m4
        - BASH_CHECK_LIB_TERMCAP: add a check for bash_cv_termcap_lib ==
          "libcurses"; set TERMCAP_LIB=-lcurses in this case

                                   8/18
                                   ----
subst.c
        - bash_variable_assignment_error: new function, implements default mode
          behavior for variable assignment errors
        - posix_variable_assignment_error: new function, implements posix mode
          behavior for variable assignment errors
        - parameter_brace_expand_rhs,expand_declaration_argument,
          do_assignment_statements: call posix_variable_assignment_error or
          bash_variable_assignment_error as appropriate

                                   8/21
                                   ----
lib/readline/misc.c
        - _rl_arg_dispatch: add the digits or other characters to
          rl_executing_keyseq if we're not calling _rl_dispatch.
          From a report by Grisha Levit <grishalevit@gmail.com>

print_cmd.c
        - print_simple_command: make sure that the_printed_command[0] == '\0'
          if we're printing a null simple command with no words
          Patch by Grisha Levit <grishalevit@gmail.com>

                                   8/22
                                   ----
builtins/read.def
        - read_builtin: make `delim' variable local, pass to edit_line to
          set the last character of the returned line; change edit_line
          prototype.
          From a suggestion by Grisha Levit <grishalevit@gmail.com>

                                   8/23
                                   ----
parse.y
        - comsub and funsub productions: don't reset eof_encountered to 0 in
          the action

subst.c
        - function_substitute: unwind-protect eof_encountered so ignoreeof
          doesn't keep getting reset to 0 if PS1 includes a ${ ...;} command.
          From a report by Grisha Levit <grishalevit@gmail.com>

                                   8/25
                                   ----
doc/{bash.1,bashref.texi}
        - clarify the cases where arrayname[@] doesn't refer to all the
          elements of an associative array (the unset builtin and test/[/[[ -v
          for now)
          Inspired by https://savannah.gnu.org/support/index.php?110924

                                   8/28
                                   ----
execute_cmd.c
        - execute_for_command,execute_select_command,execute_arith_command,
          execute_case_command: fix up order in which BASH_COMMAND is set,
          the DEBUG trap is run, and PS4 is printed.
          From a report by Grisha Levit <grishalevit@gmail.com>

lib/readline/colors.c
        - RL_COLOR_PREFIX_EXTENSION: make sure the custom suffix has a leading
          `.'
          Report and fix from Stefan Klinger <readline-gnu.org@stefan-klinger.de>

lib/readline/parse-colors.c
        - free_color_ext_list: new function, called on parse error, frees the
          list of extensions
        - rl_reparse_colors: new public function, frees old extension list and
          reparses (presumably new) value of LS_COLORS; some minimal checking
          to make sure the value has really changed

                                    9/1
                                    ---
parse.y
        - time_command_acceptable: make sure `time' is recognized as a
          reserved word after DOLPAREN and DOLBRACE.
          Report from Dima Korobskiy <dkroot2@gmail.com>

builtins/printf.def
        - printf_builtin: make 'C' equivalent to 'lc'; 'S' equivalent to 'ls'
          as POSIX specifies

                                    9/6
                                    ---
eval.c
        - parse_command: don't run pending traps if we're parsing a command
          substitution
          From a report from Emanuele Torre <torreemanuele6@gmail.com>

                                    9/8
                                    ---
jobs.c
        - stop_pipeline: don't have the parent set the terminal pgrp; rely on
          child processes to do it to avoid potential race conditions.
          From a discussion beginning at
          https://lists.gnu.org/archive/html/bug-bash/2023-08/msg00087.html

builtins/printf.def
        - bexpand: when parsing the string to be expanded, consume entire
          multibyte characters at a time, in case their encoding includes a
          '\\'
        - printf_builtin: when parsing the format string, consume entire
          multibyte characters at a time unless they begin with '\\' or '%',
          to avoid characters whose encoding contains those characters

                                   9/11
                                   ----
builtins/hash.def
        - hash_builtin: if the -p option is supplied without a name to hash,
          it's an error

hashcmd.c
        - phash_remove: if the hash table is empty, return 1 like unalias does
          when the alias isn't in the hash table.
          Report from from Mike Jonkmans <bashbug@jonkmans.nl>

                                   9/13
                                   ----
test.c
        - binary_test,unary_test: now static
        - cond_test: new function, calls binary_test or unary_test as appropriate
          and handles longjmps from test_syntax_error

test.h
        - cond_test: extern declaration

execute_cmd.c
        - execute_cond_node: call cond_test instead of binary_test or unary_test.
          From a report and patch from Grisha Levit <grishalevit@gmail.com>

doc/bash.1,doc/bashref.texi
        - hash: add some text about the mutual exclusivity of the -t, -p, and
          -d options

                                   9/14
                                   ----
subst.c,subst.h,externs.h
        - string_extract,string_extract_verbatim,string_extract_double_quoted,
          string_extract_single_quoted,skip_single_quoted,skip_double_quoted,
          extract_delimited_string,extract_heredoc_dolbrace_string,
          extract_dollar_brace_string,parameter_brace_expand,param_expand,
          extract_command_subst,extract_function_subst,extract_arithmetic_subst,
          extract_process_subst,extract_array_assignment_list,
          expand_array_subscript
          change function signatures to take size_t * instead of int * for
          arguments that are string indices or lengths, change callers
        - unquoted_substring,unquoted_member,string_extract,
          string_extract_double_quoted,skip_double_quoted,
          string_extract_single_quoted,skip_single_quoted,
          string_extract_verbatim,extract_delimited_string,
          extract_heredoc_dolbrace_string,extract_dollar_brace_string,
          parameter_brace_expand,param_expand,skip_matched_pair,skip_to_delim,
          skip_to_histexp,list_string,expand_string_dollar_quote,
          parameter_brace_expand_rhs,expand_array_subscript,shouldexp_replacement,
          expand_array_subscript,string_quote_removal: change variables used
          for string indexes to size_t
          [merge from size_t branch]

arrayfunc.c
        - expand_compound_array_assignment: use size_t for string indices

braces.c
        - brace_gobbler: use size_t for string indices

parse.y
        - xparse_dolparen: change function signature to use size_t *
          instead of int * for string index, use size_t for string indices

general.c, general.h
        - bash_tilde_find_word: change function signature to use size_t *
          instead of int * for string index

lib/readline/readline.h
        - rl_reparse_colors: extern declaration

lib/readline/doc/rltech.texi
        - rl_reparse_colors: document as public function

                                   9/21
                                   ----
pcomplete.c
        - it_init_aliases: move the free (alias_list) inside #ifdef ALIAS.
          Report and fix from Mike Jonkmans <bashbug@jonkmans.nl>

redir.c
        - redirection_error: set W_NOPROCSUB in the word redirection_error
          creates to call redirection_expand

builtins/bind.def
         - bind_builtin: use CASE_HELPOPT so the long doc gets printed when
           --help is supplied

builtins/getopts.def
        - getopts_builtin: change to use no_options()

                                   9/22
                                   ----
execute_cmd.c
        - execute_select_command: in posix mode, an invalid selection variable
          name is a fatal error, just like with `for'. This is compatible with
          ksh93 and mksh

                                   9/25
                                   ----
subst.c
        - parameter_brace_expand_length: rearrange the code slightly to reduce
          the number of find_variable calls. This matters if the variable is
          dynamic and produces a new value each time (e.g., RANDOM).

                                   9/26
                                   ----
builtins/shift.def
        - shift_builtin: if get_numeric_arg returns a number out of range and
          we're going to print an error message, make sure to skip over an
          argument of `--' so we can print the right argument

builtins/break.def
        - break_builtin,continue_builtin: ditto with get_numeric_arg and `--'

                                   9/28
                                   ----
builtins/history.def
        - history_builtin: changed error message if the numeric argument to -d
          is invalid

                                   9/29
                                   ----
subst.c
        - array_length_reference: include the open bracket in the error message
          passed to err_badarraysub; it looks cleaner

                                   10/2
                                   ----
jobs.c
        - delete_all_jobs: if we are clearing the jobs list, reset the stats
          about running and dead jobs and child processes
          Report from Koichi Murase <myoga.murase@gmail.com>

                                   10/4
                                   ----
lib/readline/complete.c
        - rl_completion_rewrite_hook: rewrite hook applied to the completion
          word before comparing against the possible completions from the
          file system (modified by rl_filename_rewrite_hook)
        - rl_filename_completion_function: call rl_completion_rewrite_hook,
          if set by the calling application, on the filename portion of the
          word to be completed

lib/readline/readline.h
        - rl_completion_rewrite_hook: extern declaration

bashline.c
        - bash_set_filename_hooks: set rl_completion_rewrite_hook to
          bash_filename_rewrite_hook now that we've separated them
          From a report and patch from Grisha Levit <grishalevit@gmail.com>;
          original report from Stefan H. Holek <stefan@epy.co.at>

lib/readline/doc/rltech.texi
        - rl_completion_rewrite_hook: document

                                   10/5
                                   ----
lib/readline/complete.c
        - rl_complete_internal: use `%' as an op character to indicate that
          we should just display the completions, like '?' in previous versions
          (nothing uses this yet)
        - rl_possible_completions: set last_completion_failed to 0 before we
          pass '?' to rl_complete_internal so we don't worry about trying to
          insert a single completion

                                   10/6
                                   ----
subst.c
        - string_transform: use ansicstr directly for the `E' transformation
          so we don't accidentally remove too many escapes.
          From a report and patch from Grisha Levit <grishalevit@gmail.com>

execute_cmd.c
        - execute_arith_for_command: make sure a failed init expression resets
          loop_level so break and continue work correctly
          From a report and patch from Grisha Levit <grishalevit@gmail.com>
        - execute_for_command: set line_number for invalid identifier error
          messages; restore before returning error
          From a report and patch from Grisha Levit <grishalevit@gmail.com>

lib/readline/misc.c
        - _rl_set_insert_mode: manage RL_STATE_OVERWRITE when modifiying
          insert mode

doc/bash.1,doc/bashref.texi
        - some style and formatting changes from Bjarni Ingi Gislason
          <bjarniig@simnet.is>

subst.c
        - getifs: now returns allocated memory to insulate it from changes to
          $IFS

builtins/read.def
        - read_builtin: since getifs now returns allocated memory, note when
          we need to free ifs_chars and free it before returning.
          Reported by Robert Elz <kre@munnari.OZ.AU> in
          https://www.austingroupbugs.net/view.php?id=1778#c6513

                                   10/7
                                   ----
pathexp.c
        - glob_char_p: add more of the extglob pattern characters; it doesn't
          hurt to quote them
          Report and patch from Grisha Levit <grishalevit@gmail.com>
        - unquoted_glob_pattern_p: don't treat a `(' immediately following a
          `/' as a potential globbing character
        - unquoted_glob_pattern_p: only treat the extended glob characters
          followed by a `(' as a glob pattern if extended_glob is enabled
        - unquoted_glob_pattern_p: an unquoted backslash isn't treated
          specially any more, but if it's followed by a CTLESC, you still
          don't treat the next character as an unquoted globbing char
          Report and patch from Grisha Levit <grishalevit@gmail.com>

                                   10/9
                                   ----
builtins/common.c
        - get_numeric_arg: if fatal > 0, set the exit status to EX_USAGE
          and call jump_to_top_level with EXITPROG or DISCARD. We don't
          need to do everything that throw_to_top_level() does here (it's
          really meant for signals and other exceptional failure conditions).

builtins/cd.def
        - cd_builtin: exit with EX_USAGE on too many arguments

builtins/shift.def
        - shift_builtin: return EX_USAGE if get_numeric_arg returns 0,
          indicating that the argument wasn't a valid number

builtins/history.def
        - shift_builtin: return EX_USAGE if get_numeric_arg returns 0

builtins/exit.def
        - exit_or_logout: if get_exitstat (which calls get_numeric_arg) returns
          a value > EX_SHERRBASE, indicating an error, just return that to
          the caller and let the caller deal with it. This means that
          `exit xyz' is no longer a fatal error, but can potentially cause a
          non-interactive posix-mode shell to exit because exit is a special
          builtin

builtins/return.def
        - return_builtin: if a non-interactive shell in posix mode gets an
          invalid numeric arg from get_exitstat, return immediately and let
          the caller deal with exiting
          All prompted by a report by Martin Schulte <gnu@schrader-schulte.de>

                                   10/13
                                   -----
pathexp.c
        - unquoted_glob_pattern_p: restore some of the special treatment of
          backslash followed by CTLESC removed on 10/7
          Report and patch from Grisha Levit <grishalevit@gmail.com>

parse.y
        - parse_matched_pair: don't add an extra CTLESC after reading \CTLESC,
          like in other parts of the parser

subst.c
        - dequote_string: don't drop trailing CTLESC in a string with more
          than a single character
          Report and patch from Grisha Levit <grishalevit@gmail.com>

lib/sh/strtrans.c
        - ansicstr: handle $'\c^A' and $'\c^?' correctly when being expanded
          by the parser (flags&2). The parser passes these as \c^A^A and
          \c^A^?, respectively, so we should strip the quoting CTLESC.
          Report from Grisha Levit <grishalevit@gmail.com>

subst.[ch]
        - extract_dollar_brace_string: now global so brace expansion can use it

braces.c
        - brace_gobbler: use extract_dollar_brace_string if we see ${ with
          the appropriate value of QUOTING, so we don't have to teach brace
          expansion more shell syntax.
          Report from Emanuele Torre <torreemanuele6@gmail.com>
        - brace_gobbler: call the word extraction functions with SX_NOALLOC
          so we don't have to allocate memory we're just going to free

                                   10/16
                                   -----
builtins/read.def
        - read_builtin: return EX_MISCERROR (2) if there is an error trying
          to assign to one of the variables. This is what the newest POSIX
          draft specifies.

variables.c
        - dispose_variable_value: do the right thing for att_nofree vars
        - makunbound: call dispose_variable_value instead of using inline code

braces.c
        - brace_gobbler: make sure to set no_longjmp_on_fatal_error around
          calls to extract_dollar_brace_string

                                   10/17
                                   -----
braces.c
        - brace_gobbler: set SX_NOLONGJMP|SX_NOERROR in the flags passed
          to extract_command_subst; make sure no_longjmp_on_fatal_error
          is set before that call
        - brace_gobbler: revert 10/13 change to use extract_dollar_brace_string

                                   10/20
                                   -----
parse.y

        - xparse_dolparen,parse_string_to_command: if SX_NOERROR is set in
          FLAGS, add PST_NOERROR to parser_state. Not much effect yet.
        - parse_matched_pair: if PST_NOERROR is set in parser_state, don't
          print an error message if we hit EOF, just return an error. A start
          at using PST_NOERROR to suppress error messages, not just duplicate
          ones. We'll see how this goes before adding more

builtins/printf.def
        - decodeprec: decode the precision into an intmax_t; clamp the return
          value at INT_MAX
        - printf_builtin: update to posix interp 1647 (even though it's about
          fprintf(3)) and output a NUL byte if %lc is supplied a null argument.
        - printf_builtin: fix case where %Q is supplied with a precision in
          the format string
        - printf_builtin: fix case where %Q is supplied with a precision
          greater than INT_MAX
        - getwidestr,getwidechar: handle case where there is no argument
          supplied; return NULL or NUL
        - convwidestr: allow a precedence of 0 for %ls
        - getint: don't call getintmax any more, just use the same code style
          inline; getintmax will consume an extra argument on an error
          Report and patches from Grisha Levit <grishalevit@gmail.com>
        - printf_builtin: handle field width and precision overflow from
          getint() by ignoring the argument (fieldwidth = 0, precision = -1)

                                   10/26
                                   -----
jobs.c
        - wait_for: rearrange code that sets the SIGINT handler to
          wait_sigint_handler and saves the old handler to old_sigint_handler
          to avoid delay before assigning the handler
          Report from Wenlin Kang <wenlin.kang@windriver.com>
        - wait_sigint_handler: if cur_sigint_handler (what restore_sigint_handler)
          just restored or ignored) is INVALID_SIGNAL_HANDLER, set the
          appropriate SIGINT handler with set_sigint_handler before sending
          ourselves SIGINT

                                   10/30
                                   -----
general.c
        - legal_number: use the same test (isspace(3)) to skip trailing
          whitespace that strtoimax uses to skip leading whitespace.
          Report and patch from Paul Eggert <eggert@cs.ucla.edu>

general.c,general.h
        - legal_number: renamed to valid_number, changed all callers
        - legal_identifier: renamed to valid_identifier, changed all callers
        - legal_alias_name: renamed to valid_alias_name, changed all callers

lib/sh/compat.c
        - legal_number: definition of legal_number here for backwards compat
          with old loadable builtins
        - legal_identifier: definition of legal_identifier here for backwards
          compat with old loadable builtins
        - legal_alias_name: same

subst.c
        - brace_expand_word_list: if brace_expand returns NULL, dummy up a
          single-element vector with a copy of the original word so we can
          add it to the result list unchanged.
          Inspired by https://savannah.gnu.org/support/?110948

                                   11/3
                                   ----
lib/readline/text.c
        - readstr: set of functions to read a string from the keyboard, using
          rl_line_buffer for temporary storage, with minimal editing and an
          optional caller-supplied completion function. Doesn't use the
          callback framework yet since none of the functions are public
        - rl_execute_named_command: new bindable function to read a bindable
          command name (from the funmap_names array) and execute it, with
          command name completion on SPACE and TAB

lib/readline/readline.h
        - rl_execute_named_command: new extern declaration

lib/readline/rlprivate.h
        - new extern declarations for the readstr function framework

lib/readline/funmap.c
        - execute-named-command: new bindable function name

lib/readline/emacs_keymap.c
        - rl_execute_named_function: bound to M-x by default

lib/readline/doc/rluser.texi
        - execute-named-command: document as bindable function name with its
          default binding to M-x in emacs mode

                                   11/6
                                   ----
lib/readline/search.c
        - _rl_nsearch_dispatch: use ^V/^Q for rl_quoted_insert into the
          search string

lib/readline/isearch.c
        - _rl_isearch_dispatch: use ^V or anything bound to rl_quoted_insert
          for rl_quoted_insert into the search string

lib/readline/terminal.c
        - add support for new BE/BD and PS/PE bracketed-paste capabilities.
          Nothing uses them yet.

                                   11/10
                                   -----
builtins/enable.def
        - dyn_load_builtin: if we don't find a pathname argument without a
          slash in BASH_LOADABLES_PATH, convert it to a pathname with a slash
          before calling dlopen, to force the loader to look in the current
          directory (Linux, for example, will not).

                                   11/14
                                   -----
examples/loadables/fdflags.c
        - fdflags_builtin: only parse the setspec once, since parsing uses
          strtok.
          Report and patch from Emanuele Torre <torreemanuele6@gmail.com>

                                   11/15
                                   -----
builtins/enable.def
        - dyn_load_builtin: if BASH_LOADABLES_PATH is set, use only it: don't
          fall back to looking in the current directory. This changes the
          historical behavior and brings the path behavior more in line with
          PATH, but not CDPATH.

                                   11/20
                                   -----
lib/readline/complete.c
        - rl_complete_internal: add `|' as a character for rl_complete_internal
          that also just displays the completions, since `%' is overloaded by
          rl_menu_complete

                                   11/23
                                   -----
examples/loadables/strptime.c
        - strptime: new loadable builtin, interface to strptime(3). Takes a
          date-time string as its arguments and tries to parse it according
          to a number of built-in formats. If successful, it outputs the
          result as a number of seconds since the epoch. Understands some
          handy shorthands like "now" and "tomorrow".

                                   11/24
                                   -----
tests/unicode1.sub
        - update the driver function using namerefs and ${!x[@]}
        - zh_TW.BIG5: fixed some problems with the test encodings.
          Report and patches from Grisha Levit <grishalevit@gmail.com>

                                   11/25
                                   -----
tests/glob2.sub
        - zh_HK.big5hkscs -> zh_TW.big5 to work around macOS 14 issues with
          BSD-based locale definition

bashline.c
        - bash_execute_unix_command: check count != 1 instead of count > 1 to
          handle negative arguments

lib/readline/bind.c
        - rl_trim_arg_from_keyseq: change the parsing_digits logic to handle
          multiple instances of `-' the same way rl_digit_loop does (collapse
          to 1)
        - rl_trim_arg_from_keyseq: fix typo to correctly recognize a `-'
          after a key sequence bound to universal-argument
        - rl_trim_arg_from_keyseq: trim negative argument for a key sequence
          that is shadowed by a longer key sequence (ANYOTHERKEY)
          Report and patches from Grisha Levit <grishalevit@gmail.com>

                                   11/27
                                   -----
support/shobj-conf
        - solaris2: change PIC option for non-gcc Solaris 2 builds

lib/malloc/malloc.c
        - binsize: make sure indexing into binsizes casts to size_t (unsigned)

examples/loadables/getconf.c
        - protect more of the _SC defines with #ifdefs for different systems

examples/loadables/fdflags.c
        - ALLFLAGS: add some more flag values from Solaris/AIX/HP-UX

                                   11/28
                                   -----
subst.c
        - function_substitute: unwind return_catch_flag unconditionally
          Report and patch from Grisha Levit <grishalevit@gmail.com>
        - function_substitute: save getopts state and restore it if the
          funsub declares a local copy of OPTIND
          Report and patch from Grisha Levit <grishalevit@gmail.com>

lib/readline/display.c
        - rl_redisplay: make sure lpos is initialized to 0 if local_prompt is
          NULL

shell.c
        - run_startup_files: make sure ssh_reading_startup_files is set to 0
          in more places; still dependent on SSH_SOURCE_BASHRC

builtins/evalstring.c
        - should_suppress_fork: make sure ssh_reading_startup_files is 0 in
          order to suppress a fork. It will never be non-zero unless someone
          enables SSH_SOURCE_BASHRC.
          Fixes https://issues.redhat.com/browse/RHEL-5653

variables.c
        - posix_unbind_tempvar: new function to implement POSIX interp 1009,
          which says that `x=4 unset x' not only unsets the variable in the
          temporary environment but the most recent scope as well.

variables.h
        - posix_unbind_tempvar: extern declaration

builtins/set.def
        - unset_builtin: if we are unsetting a variable that is in some
          temporary environment, and the shell is in posix mode, call
          posix_unbind_tempvar to implement the right posix behavior

doc/bashref.texi
        - update posix mode section with change to unset for interp 1009

                                   12/1
                                   ----
lib/readline/readline.c
        - _rl_subseq_result: add check before _rl_do_lowercase_version that
          _rl_to_lower actually results in a different key sequence
          Report and patch from Grisha Levit <grishalevit@gmail.com>

lib/readline/isearch.c
        - _rl_isearch_dispatch: if the function bound to a key and the function
          bound to the result of _rl_to_lower for that key are both
          rl_do_lowercase_version, just insert the key into the search string

                                   12/5
                                   ----
parse.y,parser.h
        - heredoc_string: new variable to indicate whether or not we're reading
          a here-document from an alias (a pushed string). Set in
          gather_here_documents individually for each call to
          make_here_document.

parse.y
        - read_a_line: if heredoc_string is non-zero, use shell_getc instead
          of yy_getc to get the right alias processing
        - shell_getc: if heredoc_string is non-zero, don't add a space to the
          end of the alias -- it can mess up the here-document delimiter if
          the next character is a newline
          Report and sample patch from gldrk <me@rarity.fan>

parse.y,make_cmd.c
        - read_a_line,make_here_document: if we're using shell_getc to read
          the body of a here-document, let it manage line_number

                                   12/8
                                   ----
bashline.c
        - bash_dequote_filename: fix an off-by-one error that didn't remove a
          closing single quote in a filename if it was backslash-escaped.
          Report by Ole Tange <ota@prosa.dk>, fix from Grisha Levit <grishalevit@gmail.com>

lib/readline/terminal.c
        - _rl_check_ansi_terminal: check whether or not rl_terminal_name
          appears to be an ANSI/ECMA-48 terminal. Check some common terminal
          types and then check whether some common terminal capabilities
          (ce, nd, ho, up) begin with CSI (ESC-[) and then have a correct
          subsequent character
        - _rl_term_isansi: new variable, holds readline's idea about whether
          the value of rl_terminal_name is an ANSI/ECMA-48 terminal. Initialized
          to RL_ANSI_TERM_DEFAULT; set to the result of _rl_check_ansi_terminal
          if initialized to 0 and on a `non-dumb' terminal
          From an idea by John Tsiombikas <nuclear@mutantstargoat.com> in 11/2023

lib/readline/rlconf.h
        - RL_ANSI_TERM_DEFAULT: define to 1 (yes) or 0 (no) to tell readline
          whether or not to assume it's running on an ANSI/ECMA-48 terminal.
          The default is 1 (yes)

                                   12/11
                                   -----
print_cmd.c
        - make_command_string_internal: when printing a coproc, print the
          coproc name only if the coproc command is not a simple command.
          Report from Albert Akchurin <ackbeat@gmail.com>

                                   12/14
                                   -----
doc/bash.1,doc/bashref.texi
        - bind: clarify meaning of `re-read' as being individual arguments
          to `bind'.
          Report from Dan Jacobson <jidanni@jidanni.org>
        - history expansion: add that the quick substitution character is
          only active when it's the first character on the line.
          Suggested by Dale R. Worley <worley@alum.mit.edu>

lib/readline/histexpand.c
        - history_expand: if history_quoting_state is "'", don't try to
          interpret the quick substitution syntax at the start of the string.
          Report from Sundeep Agarwal <learnbyexample.net@gmail.com>

execute_cmd.c,execute_cmd.h
        - save_lastarg: new function, returns saved value of $_ in allocated
          memory

parse.y
        - execute_variable_command: instead of inline code, call save_lastarg

mailcheck.c
        - check_mail: instead of inline code, call save_lastarg
        - check_mail: instead of calling bind_variable, use bind_lastarg

parse.y
        - decode_prompt_string: use save_lastarg() and bind_lastarg() to preserve
          the value of $_ across prompt string decoding.
          Patch from Grisha Levit <grishalevit@gmail.com>

                                   12/21
                                   -----
lib/readline/doc/readline.3
        - updates to some vi-mode bindings
          Patch from Josh Brobst <josh@brob.st>

builtins/setattr.def
        - set_or_show_attributes: in posix mode, supplying an argument that is
          not an identifier when not acting on functions is a utility error.
          This will cause a non-interactive shell to exit

                                   12/27
                                   -----
print_cmd.c
        - command_print_word_list,print_select_command_head,print_case_command_head,
          print_function_def: if we're in pretty-print mode, dequote words
          before printing them
          Report from Seth Sabar <sethsabar@gmail.com>

shell.c
        - execute_profile_file,execute_bashrc_file: separate the (duplicated)
          code that sources the various profile and bashrc files out into
          separate functions
        - find_bashrc_file: new function, returns the name of the interactive
          shell startup file that should be executed if --rcfile (--init-file)
          is not supplied; currently returns DEFAULT_BASHRC
        - bashrc_file: default to NULL, making it just the filename supplied as
          an argument to --rcfile/--init-file
        - execute_bashrc_file: execute whatever find_bashrc_file() returns
          if bashrc_file is NULL
          From a patch from Allison Karlitskaya <allison.karlitskaya@redhat.com>

                                 1/3/2024
                                 --------
print_cmd.c
        - print_case_clauses: if we're printing a comsub for subsequent parsing,
          don't add a newline before the first case clause, since it adds a
          token after the `in' that will allow reserved words to be parsed.
          Report from Oguz <oguzismailuysal@gmail.com>

                                    1/5
                                    ---
lib/readline/doc/rltech.texi,lib/readline/doc/readline.3
        - Note that since quoted characters are possible, the line readline()
          returns may contain embedded newlines.
          From a report by Martin Buck <mb-tmp-tah.bet@gromit.dyndns.org>

                                    1/8
                                    ---
parse.y
        - parse_compound_assignment,parse_string_to_word_list: if we call
          reset_parser, directly or indirectly via yyerror, make sure to set
          the pushed_strings member of the saved parser state to NULL, since
          reset_parser already freed it and we don't want to try and restore
          it in restore_parser_state.
          From a report by Nathan Mills <the.true.nathan.mills@gmail.com>

                                   1/10
                                   ----
builtins/hash.def, builtins/ulimit.def
        - add some calls to sh_chkwrite where there is builtin output

lib/sh/eaccess.c
        - sh_stat: use strcpy/strcpy when constructing pbuf instead of
          strcpy/strcat

lib/sh/tmpfile.c
        - sh_mktmpname,sh_mktmpfd,sh_mktmpdir: use snprintf (filename, PATH_MAX, ...)
          instead of sprintf (filename, ...)

                                   1/11
                                   ----
configure.ac
        - unconditionally AC_DEFINE(PGRP_PIPE), to prevent the problem with a
          pipeline and a DEBUG trap containing an external command described
          in https://lists.gnu.org/archive/html/bug-bash/2024-01/msg00037.html

                                   1/12
                                   ----
jobs.c
        - wait_for_any_job: if we're executing a funsub/varsub, do the wait
          even if the jobs list is frozen, but don't remove the job from the
          table or change its notification status
          Report from Oguz <oguzismailuysal@gmail.com>

subst.c
        - uw_unbind_variable: unset the first instance of the named variable,
          don't follow namerefs. This is for REPLY in a varsub if it's made
          a nameref.
          Report from Oguz <oguzismailuysal@gmail.com>

shell.c
        - main: call compat_init() so the linker drags in the old compatibility
          functions from lib/sh/compat.c. Primarily for use by existing loadable
          builtins

parse.y
        - parse_compound_assignment: handle error case (wl == &parse_string_error)
          before restoring the parser state from ps
          Report from Grisha Levit <grishalevit@gmail.com>

                                   1/13
                                   ----
lib/readline/complete.c
        - compute_lcd_of_matches: move a strlen out of a call to MBRTOWC by
          computing the length of the entire string once and then using an
          offset from it while going through the loop

                                   1/15
                                   ----
parse.y
        - parse_compound_assignment: treat parsing a string following (( (read
          by parse_dparen but not an arithmetic command) the same as
          expanding an alias when fixing up the pushed string list
          Report from Grisha Levit <grishalevit@gmail.com>

                                   1/18
                                   ----
doc/bash.1
        - typos and style fixes to satisfy groff warnings; remove uses of the
          `CW' constant-width font; use .EX/.EE for examples; use consistent
          style for double-quoted strings; fix inconsistent inter-paragraph
          spacing
          Fixes from G. Branden Robinson <g.branden.robinson@gmail.com>

                                   1/19
                                   ----
test.c
        - binary_test: make sure all calls in posix mode use TEST_LOCALE for
          locale-specific string comparisons

shell.c
        - find_bashrc_file: remove

                                   1/20
                                   ----
shell.c
        - exit_shell: don't try to call rl_deprep_terminal, regardless of the
          readline state we inherited, if bash_readline_initialized is 0
          Fixes bug reported by Oguz <oguzismailuysal@gmail.com>
        - shell_reinitialize: reset startup_state and reading_shell_script to 0;
          reset debugging_mode to 0

                                   1/22
                                   ----
builtins/shopt.def
        - reset_shopt_options: reset debugging_mode to 0

builtins/set.def
        - reset_shell_options: reset interactive_comments to 1

braces.c
        - brace_expand: if the first call to brace_gobbler consumes the entire
          string, don't try to call it again
        - brace_expand: check that i < tlen before checking to see if
          expand_seqterm left more of the string unconsumed
        - brace_gobbler: if extract_command_subst hits the end of the string
          without closing the command substitution, make sure we return 0 as
          well as set *i = tlen
          From a fuzzing report by Nathan Mills <the.true.nathan.mills@gmail.com>

                                   1/23
                                   ----
subst.c
        - function_substitute: unwind-protect current_builtin and this_shell_builtin
          like we do this_shell_function
          From a fuzzing report by Nathan Mills <the.true.nathan.mills@gmail.com>

                                   1/24
                                   ----
braces.c
        - brace_gobbler: handle nofork command substitutions; skip over any
          enclosed command and any braces it contains

bashline.c
        - check_redir: return 0 if we're in a nofork comsub, so we will attempt
          command word completion if appropriate

                                   1/26
                                   ----
lib/readline/readline.h
        - RL_STATE_READSTR: new state flag saying we are reading an arbitrary
          string from the keyboard using rl_readstr

lib/readline/rlprivate.h
        - READSTR_FREEPMT: new context state flag for rl_readstr; indicates
          that we have allocated a new prompt with _rl_make_prompt_for_search
          and we should free it with rl_restore_prompt because rl_clear_message
          will not do it

lib/readline/text.c
        - _rl_readstr_init,_rl_readstr_cleanup: set and unset RL_STATE_READSTR
        - _rl_unsave_saved_readstr_line: free any rl_undo_list, which we may
          have accumulated while reading the string, before restoring the line
          Fixes leaks reported by sparrowhawk996@gmail.com.
        - _rl_readstr_init: set the READSTR_FREEPMT context flag after we
          call _rl_make_prompt_for_search, which calls rl_save_prompt
        - _rl_readstr_sigcleanup: new function to call from signal cleanup;
          restores prompt and calls _rl_readstr_cleanup to free the readstr
          context
        - _rl_readstr_restore: if the RL_READSTR_FREEPMT flag is set in the
          context, call rl_restore_prompt to deallocate the prompt we created

lib/readline/callback.c
        - rl_callback_sigcleanup: call _rl_readstr_sigcleanup to deallocate
          readstr state on a signal

lib/readline/text.c
        - rl_execute_named_command: free COMMAND before returning

                                   1/27
                                   ----
lib/readline/rlprivate.h
        - SF_FREEPMT: new flag for non-incremental search contexts: means we
          saved the prompt data with _rl_make_prompt_for_search and need to
          restore it with rl_restore_prompt, since rl_clear_message will not

lib/readline/search.c
        - _rl_nsearch_sigcleanup: new function that if calls rl_restore_prompt
          to clean up the saved prompt data if necessary before calling the
          context cleanup function, avoids memory leak
        - _rl_nsearch_init: set the SF_FREEPMPT flag after calling
          _rl_make_prompt_from_search so we can clean it up properly on errors
        - _rl_nsearch_abort,_rl_nsearch_dosearch: call rl_restore_prompt only
          if cxt->sflags includes SF_FREEPMT, manage SF_FREEPMT state

lib/readline/signals.c
        - _rl_state_sigcleanup: call _rl_nsearch_sigcleanup

lib/readline/callback.c
        - _rl_callback_sigcleanup: call _rl_nsearch_sigcleanup

                                   1/29
                                   ----
builtins/cd.def
        - change_to_directory: don't try to canonicalize a NULL path that's
          NULL after make_absolute.
          From a report by Kerin Millar <kfm@plushkava.net>

jobs.c
        - retrieve_proc_status,delete_proc_status: external interfaces to
          bgp_search and bgp_delete, respectively; these take an argument
          that says whether or not to block SIGCHLD

jobs.h
        - retrieve_proc_status,delete_proc_status: extern declarations

builtins/wait.def
        - check_bgpids: new function to check whether a requested PID is in
          the bgpids table (retrieve_proc_status) and optionally delete it
          if it is (posixly_correct delete_proc_status) while returning its
          status. If the PID isn't in the bgpids table, return -1
        - wait_builtin: if -n is supplied with pid/job arguments, use
          check_bgpids to check the bgpids table for any of the requested
          pids. Tagged for bash-5.3, might need another option
          From a report by Steven Pelley <stevenpelley@gmail.com>

                                   1/30
                                   ----
redir.c
        - redir_open: assume the AFS bug with O_CREAT and existing files in
          protected directories has been fixed over the years, so take out
          the workaround.
          From a report by Etienne Champetier <champetier.etienne@gmail.com>

jobs.c
        - wait_for_any_job: if the jobs list is frozen and we're running a
          funsub, mark the job as notified so it gets cleaned up later
        - wait_for_any_job: if we're in posix mode, we should remove the job
          from the job list and not add it to the bgpids list, as posix
          requires

builtins/set.def
        - set_shellopts: use ASS_FORCE in the call to bind_variable so we
          don't have to mess with temporarily turning off readonly

builtins/shopt.def
        - set_bashopts: same
          Report by Emanuele Torre <torreemanuele6@gmail.com>

                                    2/1
                                    ---
builtins/printf.def
        - vblen: make it a size_t to avoid going negative on underflow
        - clearerr, ferror, fflush: don't test these if vflag is set and we're
          writing to a string (multiple places)
        - vbprintf: pass through failure returns (< 0) from vsnprintf to the
          caller(s) so we can return on errors
        - printf_builtin: remove redundant test for empty or missing format
          string
        - PF: call builtin_error if vflag is set, sh_wrerror otherwise
          (via PRETURN)
        - PF: use PRETURN so we can get partial output to the variable on
          error (if vflag is set)
        - PRETURN: free conv_buf before attempting the write (it would get
          cleaned up on the next call, but why not)
        - PRETURN: clean up vbuf only if vflag is set, and clean it up on
          error (it would get cleaned up on the next call, but...)
          Fixes from Grisha Levit <grishalevit@gmail.com>

                                    2/2
                                    ---
doc/bash.1,doc/bashref.texi
        - word expansions: make it clearer that quote removal is one of the
          shell word expansions

execute_cmd.c,execute_cmd.h
        - currently_executing_command: no longer static, so other parts of
          the shell can save and restore it if necessary

subst.c
        - function_substitute: unwind-protect currently_executing_command,
          since parse_and_execute can overwrite it in the current shell
          execution context.
          Report from Grisha Levit <grishalevit@gmail.com>

lib/readline/readline.c
        - readline_common_teardown: new function from the guts of
          readline_internal_teardown, manages and deallocates rl_undo_list.

lib/readline/callback.c
        - rl_callback_handler_remove: if we're removing the line handler
          while we still have an undo list, we didn't call
          readline_internal_teardown. Call readline_common_teardown to manage
          the undo list in case we are calling this from a signal handler
          but not exiting the program.
          Fixes leaks reported by sparrowhawk996@gmail.com.

variables.c
        - initialize_shell_variables: use ASS_FORCE when binding SHELLOPTS or
          BASHOPTS if we get them from the environment, in case they've
          already been created as shell variables and set to readonly (like
          changes from 1/30)
        - set_ppid: use ASS_FORCE in the call to bind_variable instead of
          temporarily turning off att_readonly

subst.c
        - extract_delimited_string: pass FLAGS down to skip_single_quoted and
          skip_double_quoted so we propagate SX_COMMAND and SX_COMPLETE
          properly.
          Fixes bug reported by A4-Tacks <wdsjxhno1001@163.com>

                                    2/3
                                    ---
bashline.c
        - initialize_readline: add `bash-vi-complete' as a bindable command
          name so users can bind other key sequences to it
        - vi_advance_point: function to advance point by one character even
          in the presence of multibyte characters 
        - bash_vi_complete: call vi_advance_point instead of just incrementing
          rl_point

                                    2/5
                                    ---
doc/bash.1,lib/readline/doc/readline.3
        - minor updates to handle old versions of troff and groff warnings
          Fixes from G. Branden Robinson <g.branden.robinson@gmail.com>

                                    2/7
                                    ---
jobs.c
        - notify_of_job_status: in non-interactive shells, if we're not going
          to print information about a terminated background job
          (SIGINT/SIGTERM/SIGPIPE), don't mark it as notified, in the same
          way that we don't mark background jobs that exit cleanly as notified
          Inspired by a discussion with Robert Elz <kre@munnari.oz.au> and
          https://lists.gnu.org/archive/html/bug-bash/2024-01/msg00189.html

                                    2/9
                                    ---
lib/readline/history.c
        - DEFAULT_HISTORY_GROW_SIZE: bump up to 256
        - real_history, real_history_size: the true history array and its
          allocated size. the_history begins a user-visible window into this
          list, extending for history_size entries
        - history_list_grow_size: compute how much to extend the history list;
          increase by roughly sqrt(history_size), don't extend by less than
          (new) DEFAULT_HISTORY_GROW_SIZE
        - history_list_resize: possibly resize/realloc real_history and reset
          the_history to real_history and history_size to real_history_size
        - advance_history: make the `window' that the_history provides into
          real_history advance to simulate dropping an initial entry; don't
          need to memmove all the entries any more
        - add_history: call advance_history as necessary to move the_history
          window
        - add_history: call history_list_resize as necessary
        Report and initial patch from Casey Johnson <strykre@hotmail.com>

                                   2/12
                                   ----
bashline.c,lib/readline/bind.c,lib/readline/display.c
        - replace some sprintf calls with snprintf to appease clang

execute_cmd.c
        - execute_simple_command: unwind-protect this_command_name, since we
          assign it to something we will free if unwind-protects are run
        - execute_function: unwind-protect currently_executing_command, since
          execute_command_internal will change it to something will will free
          if unwind-protects are run
          Report from Grisha Levit <grishalevit@gmail.com>
        - execute_function: if we didn't compile with debugger support, restore
          currently_executing_command after run_debug_trap, like in other
          cases

                                   2/13
                                   ----
builtins/declare.def
        - declare_invalid_opts: move the code that checks for invalid option
          combinations to its own function; it returns 0 for no errors and
          a return code for declare_internal to return otherwise
          Inspired by report from Grisha Levit <grishalevit@gmail.com>
        - declare_invalid_opts: make -A -a and -A +A/-a +a option combinations
          invalid
          Report from Grisha Levit <grishalevit@gmail.com>

                                   2/14
                                   ----
bashline.c,general.c,subst.c,lib/sh/pathphys.c,builtins/read.def,
support/bashversion.c
        - changes for cygwin and msys (no new features)

bashline.c,builtins/fc.def,general.c,parse.y,stringlib.c,subst.c,variables.c
        - MSYS-specific changes to support \r\n line endings and DOS-style
          paths

configure.ac,cross-build/msys32.cache,support/config.rpath,support/shobj-conf
        - MSYS-specific build options

configure.ac,config.h.in,m4/unlocked-io.m4,general.h,include/unlocked-io.h
MANIFEST
        - adapt Gnulib's unlocked-io module for faster stdio functions.
          From Grisha Levit <grishalevit@gmail.com>

lib/malloc/malloc.c,lib/malloc/table.h,lib/sh/strlcpy.c
        - fixes for ISO C 23
          Patch from Collin Funk <collin.funk1@gmail.com>

                                   2/16
                                   ----
jobs.c
        - waitchld: note whether or not we are executing in a signal handler
          context and break out of the loop if we receive a terminating
          signal instead of calling termsig_handler, which can execute unsafe
          functions
          From https://issues.redhat.com/browse/RHEL-22295

variables.h
        - valid_readonly_attrs,invalid_readonly_attrs: new defines for declare
          to use to validate attempts to modify attributes of readonly
          variables

builtins/declare.def
        - declare_internal: reject attempts to modify (set or unset) attributes 
          in invalid_readonly_attrs for readonly variables.
          From a discussion with Grisha Levit <grishalevit@gmail.com>

                                   2/17
                                   ----
variables.h
        - add att_readonly to valid_readonly_attrs; it's valid to use
          declare -r var ; declare -r var

Makefile.in,builtins/Makefile.in
        - add unlocked-io.h to dependencies and variable contents where
          appropriate
        - add additional include files to INSTALLED_INCFILES

builtins/pushd.def,examples/loadables/necho.c
        - fix order of includes to get unlocked-io.h
          From Grisha Levit <grishalevit@gmail.com>

subst.c,subst.h
        - rename quote_rhs -> quote_nosplit

                                   2/19
                                   ----

subst.c
        - quote_var_value: break the code that quotes a variable value ($x,
          ${x}, ${x[n]}, etc.) into a separate inline function and call it
          from param_expand and parameter_brace_expand_word so they do it
          consistently
        - param_expand: quote $* appropriately using quote_nosplit if we are
          in a place where word splitting will not occur (PF_NOSPLIT2),
          expand_no_split_dollar_star == 1 but quoted is 0
        - quote_var_value: use quote_nosplit if we are in a place where word
          splitting will not occur (PF_NOSPLIT2) but quoted == 0.
          Fixes bug with IFS=$'\1' reported by alex xmb sw ratchev <fxmbsw7@gmail.com>

arrayfunc.c
        - array_value: make sure to quote ${A[*]} appropriately if not quoted
          (quoted == 0) and in a place where word splitting does not occur
          (flags & AV_ASSIGNRHS); the caller expects array_value to quote in
          this case

subst.c
        - parameter_brace_expand_word: make sure to call array_value with
          AV_ASSIGNRHS if we are expanding unquoted ${A[*]} in a place where
          word splitting does not occur with a non-null $IFS; array_value will
          quote appropriately here
        - parameter_brace_expand_word,param_expand: use quote_var_value when
          expanding $N and ${N}

doc/bash.1,doc/bashref.texi
        - HISTIGNORE: clarify the description a little to emphasize that lines
          matching one of the patterns are not saved in the history list
          From https://savannah.gnu.org/support/index.php?111020

                                   2/20
                                   ----
builtins/evalfile.c
        - FEVAL_RETRY: if set in FLAGS, _evalfile will retry an interrupted
          open
        - _evalfile: if open() returns -1, FEVAL_RETRY is set in FLAGS, and
          errno == EINTR, retry the open after checking for interrupts or
          terminating signals
        - maybe_execute_file,force_execute_file: pass FEVAL_RETRY in flags

bashhist.c
        - load_history: retry read_history if it returns EINTR after checking
          for interrupts or terminating signals 

lib/readline/bind.c
        - _rl_read_init_file: retry the open once if it's interrupted due to a
          signal. If we are at a point where readline has installed its
          signal handlers, check for signals readline handles
          From a patch from Grisha Levit <grishalevit@gmail.com>

                                   2/21
                                   ----
subst.c
        - make_internal_declare: now takes two strings of option arguments:
          those to turn on (`-') and those to turn off (`+')
        - expand_declaration_argument: simplify the code; handle `-' and `+'
          optionsns; always call make_internal_declare
          From a patch from Grisha Levit <grishalevit@gmail.com>

                                   2/22
                                   ----
aclocal.m4
        - add additional character to test for broken wcwidth (0x200b)

lib/readline/display.c
        - update_line: use IS_COMBINING_CHAR instead of UNICODE_COMBINING_CHAR
          plus WCWIDTH; it doesn't make sense on systems where wcwidth isn't
          broken

                                   2/27
                                   ----
print_cmd.c
        - print_case_clauses: if one of the case command pattern lists begins
          with the word `esac' (unquoted), precede the pattern list with `(',
          since it had to be there originally to get through the parser.
          Report by Emanuele Torre <torreemanuele6@gmail.com>

                                   2/29
                                   ----
general.c,general.h
        - string_to_rlimtype: takes a second ENDP argument, like strtol, so
          the caller doesn't have to check that the string is all digits,
          but can optionally check for and disallow a 0x prefix

                                    3/2
                                    ---
subst.c
        - dequote_list: unset the W_QUOTED flag in the word after dequoting it
        - parameter_brace_expand_rhs: if the word in the list returned by
          expand_string_for_rhs has W_QUOTED set, but the string being
          expanded was not quoted, turn on the W_QUOTED in the returned word
          so we can potentially avoid word splitting
        - expand_word_internal: if CTLNUL is a IFS character, don't add quoted
          null strings to istring if we're going to be word splitting, since
          they will be treated as word delimiters

                                    3/6
                                    ---
examples/loadables/getconf.c
        - getconf_builtin,getconf_all: changes for POSIX interp 1808 proposal
          to allow an optional pathname argument with -a that forces its use
          for pathconf variables
          https://www.austingroupbugs.net/view.php?id=1808

                                   3/11
                                   ----
builtins/printf.def
        - printf_builtin: %lc/%ls (%C/%S) should only work on wide characters
          when in a locale where MB_CUR_MAX > 1.
          Report by Emanuele Torre <torreemanuele6@gmail.com>

                                   3/12
                                   ----
jobs.c
        - notify_of_job_status: don't mark terminated background jobs or stopped
          jobs as notified in shells started to run -c command
          From a report by Greg Wooledge <greg@wooledge.org>
        - notify_of_job_status: make the final marking the dead job as notified
          a true catch-all so we can put a debugging message in there to see
          if there are other missing cases
        - notify_of_job_status: don't mark terminated jobs that died due to
          a signal the shell trapped (on the assumption that the shell
          received the signal, too) as notified, since we don't report on it
          in the JDEAD case if the signal is trapped

                                   3/13
                                   ----
builtins/printf.def
        - PF: print an error message if printf returns an error or leaves
          ferror(stdout) true
          From a report by Paul Eggert <eggert@cs.ucla.edu>

                                   3/14
                                   ----
builtins/printf.def
        - getint: now takes an int argument and returns it if the conversion
          overflows an int; changed callers in printf_builtin
        - getint: consolidate checks for overflow. This changes the behavior
          if the argument overflows an intmax_t: it returns a field width of
          0 (the overflow result) instead of -1, which changes how printf
          behaves. This is consistent with the behavior when the argument
          overflows an int
        - printf_builtin: change check for overflow of [LONG_MIN..LONG_MAX]
          for %d/%i to be explicit instead of relying on integer overflow of p
        - printstr,printwidestr: print message if field width or precision
          overflow, since we don't call printf
        - printstr,printwidestr: set field width and precision on integer
          overflow the way we do in printf_builtin
          From a report by Paul Eggert <eggert@cs.ucla.edu>

bashtypes.h
        - PRIdMAX: move redefinition here after including inttypes.h

builtins/printf.def,examples/loadables/seq.c,examples/loadables/getconf.h
        - remove PRIdMAX redefinitions, since it's now fixed in bashtypes.h
          From a report by Paul Eggert <eggert@cs.ucla.edu>

                                   3/15
                                   ----
include/stdckdint.in.h,include/intprops-internal.h
        - new files, from gnulib

configure.ac
        - stdckdint.h: create in the build directory if the system doesn't
          provide one by copying ${srcdir}/include/stdckdint.in.h; make
          sure we don't create a new one every time, changing the timestamp

Makefile.in
        - CREATED_HEADERS: add stdckdint.h