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 Ouz <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]