Bash-4.4 patch 4

[thirdparty/bash.git] / CWRU / changelog

                                 2/14/2011
                                 ---------
[bash-4.2 released]

                                   2/15
                                   ----
lib/glob/gmisc.c
        - fix wmatchlen and umatchlen to avoid going past the end of the
          string on an incomplete bracket expression that ends with a
          NUL.  Partial fix for bug reported by Clark Wang <dearvoid@gmail.com>

                                   2/16
                                   ----
subst.h
        - new string extract flag value: SX_WORD.  Used when calling
          extract_dollar_brace_string to skip over the word in
          ${param op word} from parameter_brace_expand

subst.c
        - change parameter_brace_expand to add SX_WORD to flags passed to
          extract_dollar_brace_string
        - change parameter_brace_expand to use SX_POSIXEXP for all non-posix
          word expansion operators that treat single quotes as special, not
          just % and #
        - change extract_dollar_brace_string to initialize dolbrace_state to
          DOLBRACE_WORD if SX_WORD flag supplied and we shouldn't use
          DOLBRACE_QUOTE.  Fixes bug reported by Juergen Daubert <jue@jue.li>

doc/{bash.1,bashref.texi}
        - document the exact expansions here strings undergo

                                   2/17
                                   ----
lib/readline/vi_mode.c
        - make sure that `dd', `cc', and `yy' call vidomove_dispatch from
          rl_domove_read_callback.  Fixes bug reported by Clark Wang
          <dearvoid@gmail.com>

lib/readline/callback.c
        - make sure _rl_internal_char_cleanup is called after the
          vi-motion callbacks (rl_vi_domove_callback) in rl_callback_read_char.
          Companion to above fix

doc/{bash.1,bashref.texi}
        - make sure that the text describing the rhs of the == and =~
          operators to [[ states that only the quoted portion of the pattern
          is matched as a string

                                   2/18
                                   ----
lib/glob/gmisc.c
        - better fix for umatchlen/wmatchlen: keep track of the number of
          characters in a bracket expression as the value to increase
          matchlen by if the bracket expression is not well-formed.  Fixes
          bug reported by Clark Wang <dearvoid@gmail.com>

subst.c
        - change expand_string_for_rhs so that it sets the W_NOSPLIT2 flag
          in the word flags.  We will not perform word splitting or quote
          removal on the result, so we do not want to add quoted nulls if
          we see "" or ''.  Fixes bug reported by Mike Frysinger
          <vapier@gentoo.org>

                                   2/19
                                   ----
variables.c
        - new function, int chkexport(name), checks whether variable NAME is
          exported and remakes the export environment if necessary.  Returns
          1 if NAME is exported and 0 if not
        - call chkexport(name) to get tzset to look at the right variable in
          the environment when modifying TZ in sv_tz.  Don't call tzset if
          chkexport doesn't indicate that the variable is exported

variables.h
        - new extern declaration for chkexport


{parse.y,builtins/printf.def}
        - call sv_tz before calling localtime() when formatting time strings
          in prompt strings or using printf.  Fixes bug reported by
          Dennis Williamson <dennistwilliamson@gmail.com>

execute_cmd.c
        - modify fix of 2/9 to add casts when those variables are passed to
          functions; some compilers throw errors instead of warnings.  Report
          and fix from Joachim Schmitz <jojo@schmitz-digital.de>

support/shobj-conf
        - add a stanza for nsk on the Tandem from Joachim Schmitz
          <jojo@schmitz-digital.de>

{shell,lib/readline/shell}.c
        - Tandem systems should use getpwnam (getlogin()); for some reason
          they don't do well with using getuid().  Fix from Joachim Schmitz
          <jojo@schmitz-digital.de>

                                    3/1
                                    ---
variables.c
        - make sure that the return value from find_variable is non-null
          before trying to use it in chkexport.  Fixes bug reported by
          Evangelos Foutras <foutrelis@gmail.com>

                                    3/3
                                    ---
parse.y
        - when adding $$ to the current token buffer in read_token_word(),
          don't xmalloc a buffer for two characters and then strcpy it, just
          copy the characters directly into the token buffer.  Fix from
          Michael Whitten <mfwitten@gmail.com>

execute_cmd.c
        - fix expand_word_unsplit to add the W_NOSPLIT2 flag to the word to
          be expanded, so "" doesn't add CTLNUL.  Similar to fix of 2/18 to
          expand_string_for_rhs.  Fixes bug reported by Nathanael D. Noblet
          <nathanael@gnat.ca> and Matthias Klose <doko@debian.org>

parse.y
        - fix extended_glob case of read_token_word to allocate an extra
          space in the buffer for the next character read after the extended
          glob specification if it's a CTLESC or CTLNUL.  Report and fix from
          Michael Witten <mfwitten@gmail.com>
        - fix shell expansions case of read_token_word to allocate an extra
          space in the buffer for the next character read after the shell
          expansion if it's a CTLESC or CTLNUL.  Report and fix from
          Michael Witten <mfwitten@gmail.com>
        - TENTATIVE: fix read_token_word to reduce the amount of buffer space
          required to hold the translated and double-quoted value of $"..."
          strings.  Report and fix from Michael Witten <mfwitten@gmail.com>
        - change code around got_character and got_escaped_character labels to
          make sure that we call RESIZE_MALLOCED_BUFFER before adding the
          CTLESC before a CTLESC or CTLNUL, and before adding the character if
          we're not adding a CTLESC.  Report and fix from
          Michael Witten <mfwitten@gmail.com>

subst.c
        - new param flags value, PF_ASSIGNRHS, mirrors W_ASSIGNRHS, noting that
          parameter expansion is on rhs of assignment statement.  That inhibits
          word splitting
        - change param_expand to call string_list_dollar_at with quoted == 1
          if PF_ASSIGNRHS is set, so it will quote IFS characters in the
          positional parameter before separating them with the first char of
          $IFS.  This keeps the rhs from being split inappropriately.  Fixes
          bug reported by Andres Perera <andres.p@zoho.com>

                                    3/4
                                    ---
lib/readline/bind.c
        - add a missing free of `names' in rl_function_dumper.  Bug report
          and fix from Michael Snyder <msnyder@vmware.com>

                                    3/5
                                    ---
lib/readline/rltty.c
        - change rl_deprep_terminal so it uses fileno (stdin) for the tty fd
          if rl_instream is not set, like rl_prep_terminal

                                    3/6
                                    ---
lib/readline/display.c
        - fix rl_message to use a dynamically-allocated buffer instead of a
          fixed-size buffer of 128 chars for the `local message prompt'.  Bug
          report and fix from Micah Cowan <micah@cowan.name>

                                    3/7
                                    ---
jobs.c
        - add sentinel to wait_sigint_handler so it only sets wait_sigint_received
          if waiting_for_child is non-zero; otherwise, it restores the old
          SIGINT handler and sends itself the SIGINT
        - set waiting_for_child around the calls to waitchld that use it to
          synchronously wait for a process
        - change logic that decides whether or not the child process blocked
          or handled SIGINT based on whether or not waitpid returns -1/EINTR
          and the shell receives a SIGINT and the child does not exit.  If
          the child later exits due to SIGINT, cancel the assumoption that it
          was handled
        - instead of testing whether or not the child exited due to SIGINT
          when deciding whether the shell should act on a SIGINT it received
          while waiting, test whether or not we think the child caught
          SIGINT.  If it did, we let it go (unless the shell has it trapped);
          if it did not catch it, the shell acts on the SIGINT.  Fix from
          Linus Torvalds <torvalds@linux-foundation.org>, bug report originally
          from Oleg Nesterov <oleg@redhat.com>

                                    3/8
                                    ---
shell.c
        - initialize no_line_editing to 1 if READLINE is not defined -- we
          can't have line editing without readline

                                   3/12
                                   ----
lib/readline/signals.c
        - add SIGHUP to the set of signals readline handles

lib/readline/doc/rltech.texi
        - document that SIGHUP is now part of the set of signals readline
          handles

lib/readline/input.c
        - if _rl_caught_signal indicates that read() was interrupted by a
          SIGHUP or SIGTERM, return READERR or EOF as appropriate
        - call rl_event_hook, if it's set, if call to read in rl_getc
          returns -1/EINTR.  If rl_event_hook doesn't do anything, this
          continues the loop as before.  This handles the other fatal
          signals

execute_cmd.c
        - add a couple of QUIT; calls to execute_disk_command and
          execute_simple_command to improve responsiveness to interrupts
          and fatal signals

input.c
        - rearrange getc_with_restart so that the return values from read()
          are handled right

parse.y
        - don't need to set terminate_immediately in yy_stream_get, since
          getc_with_restart checks for terminating signals itself
        - since readline returns READERR on SIGHUP or SIGTERM, don't need
          to set terminate_immediately.  Still doesn't handle other
          signals well -- will have to check that some more

bashline.c
        - new function, bash_event_hook, for rl_event_hook.  Just checks for
          terminating signals and acts on them using CHECK_TERMSIG.
        - set rl_event_hook to bash_event_hook

builtins/read.def
        - take out setting terminate_immediately; add calls to CHECK_TERMSIG
          after read calls

doc/{bash.1,bashref.texi}
        - move the text describing the effect of negative subscripts used to
          reference indexed array elements to the paragraphs describing
          ${parameter[subscript]}, since that's where they are implemented.
          Pointed out by Christopher F. A. Johnson <cfajohnson@gmail.com>

arrayfunc.[ch],subst.c
        - array_expand_index now takes a new first argument: a SHELL_VAR *
          of the array variable being subscripted.  Can be used later to fully
          implement negative subscripts

                                   3/14
                                   ----
lib/glob/glob.c
        - fix mbskipname to not turn the directory entry name into a wide char
          string if the conversion of the pattern to a wide char string fails
        - fix mbskipname to call skipname if either the pattern or the filename
          can't be converted into a wide-char string

lib/glob/xmbsrtowcs.c
        - fix xdupmbstowcs2 to handle return value of 0 from mbsnrtowcs and
          short-circuit with failure in that case.  Fixes bug reported by
          Roman Rakus <rrakus@redhat.com>

                                   3/15
                                   ----
bashline.c
        - new variable, bash_filename_quote_characters to store the value
          assigned to rl_filename_quote_characters so it can be restored
          if changed.
        - change bashline_reset and attempt_shell_completion to restore
          rl_filename_quote_characters if not set to default

                                   3/22
                                   ----
lib/glob/glob.c
        - wdequote_pathname falls back to udequote_pathname if xdupmbstowcs
          fails to convert the pathname to a wide-character string

lib/glob/xmbsrtowcs.c
        - xdupmbstowcs2: change to fix problem with leading '\\' (results in
          nms == 0, which causes it to short-circuit with failure right
          away).  Fixes bug pointed out by Werner Fink <werner@suse.de>
        - xdupmbstowcs2: compensate for mbsnrtowcs returning 0 by taking the
          next single-byte character and going on
        - xdupmbstowcs2: change memory allocation to increase by WSBUF_INC
          bytes; try to avoid calls to realloc (even if they don't actually
          result in more memory being allocated)

                                   3/24
                                   ----
doc/{bash.1,bashref.texi}
        - slightly modify BASH_SUBSHELL description based on complaint from
          Sam Liddicott <sam@liddicott.com>

                                   3/25
                                   ----
trap.c
        - change free_trap_strings to not call free_trap_string for signals
          that are being ignored, like reset_or_restore_signal_handlers.
          Fixes bug reported by Satoshi Takahashi <blue3waters@gmail.com>

                                   3/26
                                   ----
lib/readline/rltypedefs.h
        - remove old Function/VFunction/CPFunction/CPPFunction typedefs as
          suggested by Tom Tromey <tromey@redhat.com>

lib/readline/rlstdc.h
        - move defines for USE_VARARGS/PREFER_STDARG/PREFER_VARARGS from
          config.h.in to here because declaration of rl_message in
          readline.h uses the defines.  This makes it hard for another packages
          to use after the header files are installed, since config.h is not
          one of the installed files.  Suggested by Tom Tromey
          <tromey@redhat.com>

                                   3/27
                                   ----
print_cmd.c
        - change indirection_string from a static buffer to a dynamic one
          managed by indirection_level_string(), so we don't end up truncating
          PS4.  Suggested by Dennis Williamson <dennistwilliamson@gmail.com>

lib/readline/shell.c
        - change sh_set_lines_and_columns to use static buffers instead of
          allocating the buffers to pass to setenv/putenv

lib/readline/terminal.c
        - change _rl_get_screen_size to not call sh_set_lines_and_columns if
          ignore_env == 0
        - _rl_sigwinch_resize_terminal: new function to just retrieve terminal
          size, ignoring environment

lib/readline/rlprivate.h
        - new external declaration for _rl_sigwinch_resize_terminal() (currently
          unused)

lib/readline/signals.c
        - rl_sigwinch_handler: set _rl_caught_signal to SIGWINCH
        - rl_sigwinch_handler: don't immediately call rl_resize_terminal; just
          leave _rl_caught_signal set for RL_CHECK_SIGNALS to handle
        - _rl_signal_handler: call rl_resize_terminal if sig == SIGWINCH.
          Should fix hang when sending multiple repeated SIGWINCH reported by
          Henning Bekel <h.bekel@googlemail.com>

                                   3/29
                                   ----
lib/sh/snprintf.c
        - include math.h for any defines for isinf/isnan
        - use code from gnulib documentation to implement isinf/isnan if they
          are not defined

configure.in
        - don't check for isinf or isnan; c99 says they're macros anyway

config.h.in
        - remove defines for ISINF_IN_LIBC and ISNAN_IN_LIBC, no longer used
          by snprintf.c

                                    4/2
                                    ---
braces.c
        - brace_gobbler: fix to understand double-quoted command substitution,
          since the shell understands unquoted comsubs.  Fixes bug reported
          by Michael Whitten <mfwitten@gmail.com>

lib/readline/display.c
        - include <pc.h> on MDOS
        - get and set screen size using DJGPP-specific calls on MSDOS
        - move cursor up clear screen using DJGPP-specific calls
        - don't call tputs on DJGPP; there is no good terminfo support

lib/readline/terminal.c
        - include <pc.h> on MDOS
        - get and set screen size using DJGPP-specific calls on MSDOS
        - use DJGPP-specific initialization on MSDOS, zeroing all the
          _rl_term_* variables
        - don't call tputs on DJGPP; there is no good terminfo support
          DJGPP support from Eli Zaretskii  <eliz@gnu.org>

                                    4/6
                                    ---

config-top.h
        - change DEFAULT_PATH_VALUE to something more useful and modern

                                    4/8
                                    ---
tests/printf2.sub
        - make sure LC_ALL and LC_CTYPE are set so LANG assignment takes effect.
          Reported by Cedric Arbogast <arbogast.cedric@gmail.com>

                                   4/11
                                   ----
include/chartypes.h
        - fix a couple of dicey defines (though ones that don't cause any
          compiler warnings) in IN_CTYPE_DOMAIN

doc/{bashref.texi,bash.1}
        - add note referring to duplicating file descriptors in sections
          describing redirecting stdout and stderr and appending to stdout
          and stderr.  Suggested by Matthew Dinger <mdinger.bugzilla@gmail.com>

pcomplete.c
        - it_init_helptopics: new function to support completing on help topics,
          not just builtins
        - it_helptopics: new programmable completion list of help topics
        - build list of helptopic completions in gen_action_completions on
          demand

pcomplete.h
        - new extern declaration for it_helptopics

builtins/complete.def
        - the `helptopic' action now maps to CA_HELPTOPIC intead of CA_BUILTIN,
          since there are more help topics than just builtins.  Suggested by
          Clark Wang <dearvoid@gmail.com>

                                   4/12
                                   ----
print_cmd.c
        - fix print_arith_for_command to add a call to PRINT_DEFERRED_HEREDOCS
          before ending the body of the command, so heredocs get attached to
          the right command instead of to the loop.  From gentoo bug 363371
          http://bugs.gentoo.org/show_bug.cgi?id=363371

execute_cmd.c
        - change coproc_pidchk to unset the appropriate shell variables when
          the (currently single) known coproc pid terminates
        - cleanup and new functions to fully support multiple coprocesses when
          and if I decide to go there

                                   4/13
                                   ----
print_cmd.c
        - fix print_group_command to add a call to PRINT_DEFERRED_HEREDOCS
          after call to make_command_string_internal before printing closing
          `}'
        - fix make_command_string_internal to add a call to
          PRINT_DEFERRED_HEREDOCS after recursive call to
          make_command_string_internal in case cm_subshell before printing
          closing `)'

                                   4/14
                                   ----
print_cmd.c
        - change overlapping strcpy in named_function_string to memmove

sig.h
        - UNBLOCK_SIGNAL: convenience define, same as UNBLOCK_CHILD, just
          restores an old signal mask

trap.c
        - set_signal: instead of setting the signal handler to SIG_IGN while
          installing the new trap handler, block the signal and unblock it
          after the new handler is installed.  Fixes bug reported by Roman
          Rakus <rrakus@redhat.com>

                                   4/15
                                   ----
doc/{bash.1,bashref.texi}
        - make it clear that enabling monitor mode means that all jobs run in
          separate process groups

                                   4/18
                                   ----
builtins/fc.def
        - update fix of 4/15/2010 to not take saved_command_line_count into
          account when stepping down the history list to make sure that
          last_hist indexes something that is valid.  Fixes bug reported by
          <piuma@piumalab.org>

                                   4/19
                                   ----
builtins/fc.def
        - fc_gethnum: make sure the calculation to decide the last history
          entry is exactly the same as fc_builtin.  Fixes bug uncovered by
          fix of 4/18 to stop seg fault

                                   4/22
                                   ----
lib/readline/terminal.c
        - change _rl_enable_meta_key to set a flag indicating that it sent the
          enable-meta sequence
        - _rl_disable_meta_key: new function to turn off meta mode after we
          turned it on with _rl_enable_meta_key

lib/readline/rlprivate.h
        - extern declaration for _rl_disable_meta_key

configure.in
        - if not cross-compiling, set CFLAGS_FOR_BUILD from any CFLAGS inherited
          from the environment.  Fixes HP/UX build problem reported by
          "Daniel Richard G." <skunk@iSKUNK.ORG>

                                   4/26
                                   ----
config-top.h
        - define MULTIPLE_COPROCS to 0 so the code is still disabled but easy
          to enable via configure option or editing this file

                                   4/29
                                   ----
lib/sh/eaccess.c
        - freebsd provides faccessat, with the same misfeature as their eaccess
          and access implementations (X_OK returns true for uid==0 regardless
          of the actual file permissions), so reorganize code to check the
          file permissions as with eaccess.  Report and fix from Johan Hattne
          <johan.hattne@utsouthwestern.edu>

                                    5/2
                                    ---
doc/{bash.1,bashref.texi}
        - add forward reference to `Pattern Matching' from `Pathname
          Expansion', suggested by Greg Wooledge <wooledg@eeg.ccf.org>

                                    5/5
                                    ---
pcomplib.c
        - the bash_completion project now distributes over 200 completions
          for various programs, with no end in sight, so increase the value
          of COMPLETE_HASH_BUCKETS from 32 to 128

pathexp.c
        - quote_string_for_globbing: make sure CTLESC quoting CTLESC is
          translated into \<CTLESC> even if the flags include QGLOB_REGEXP.
          We don't want to process the second CTLESC as a quote character.
          Fixes bug reported by Shawn Bohrer <sbohrer@rgmadvisors.com>

                                    5/6
                                    ---
builtins/printf.def
        - change PRETURN to not call fflush if ferror(stdout) is true
        - if a call to one of the stdio functions or printstr leaves
          ferror(stdout) true, and PRETURN is going to be called, let PRETURN
          print the error message rather than doubling up the messages.  Fixes
          problem reported by Roman Rakus <rrakus@redhat.com>

                                    5/9
                                    ---
doc/{bash.1,bashref.texi}
        - add note to the effect that lists inside compound command can be
          terminated by newlines as well as semicolons.  Suggested by
          Roman Byshko <rbyshko@gmail.com>

                                   5/10
                                   ----
subst.c
        - remove_quoted_nulls: fix problem that caused it to skip over the
          character after a CTLNUL, which had the effect of skipping every
          other of a series of CTLNULs.  Fixes bug reported by
          Marten Wikstrom <marten.wikstrom@keystream.se>

                                   5/11
                                   ----
subst.c
        - extract_process_subst: add SX_COMMAND flag to call to
          extract_delimited_string, since we're expanding the same sort of
          command as command substitution.  Fixes bug reported in Ubuntu
          bug 779848

                                   5/12
                                   ----
configure.in
        - set the prefer_shared and prefer_static variables appropriately
          depending on the value of $opt_static_link

aclocal.m4
        - AC_LIB_LINKFLAGS_BODY: change to not prefer shared versions of the
          libraries it's searching for if the prefer_shared variable is "no".
          Fixes problem reported by Cedric Arbogast <arbogast.cedric@gmail.com>

                                   5/13
                                   ----
lib/readline/readline.c
        - _rl_internal_teardown: add call to _rl_disable_meta_key to make the
          meta key active only for the duration of the call to readline()
        - _rl_internal_setup: move call to _rl_enable_meta_key here from
          readline_initialize_everything so the meta key is active only for
          the duration of the call to readline().  Suggestion from Miroslav
          Lichvar <mlichvar@redhat.com>

builtins/help.def
        - help_builtin: change strncmp to strcmp so that `help read' no longer
          matches `readonly'.  Suggested by Clark Wang <dearvoid@gmail.com>

config.h.in
        - add define for GLIBC21, checked using jm_GLIBC21 as part of the tests
          for libintl

lib/malloc/malloc.c
        - internal_free: don't use the cached value of memtop when deciding
          whether or not to adjust the break and give memory back to the kernel
          when using the GNU C library, since glibc uses sbrk for its own
          internal purposes.  From Debian bug 614815, reported by Samuel
          Thibault <samuel.thibault@gnu.org>

aclocal.m4
        - BASH_STRUCT_WEXITSTATUS_OFFSET: change AC_RUN_IFELSE to AC_TRY_RUN
          to avoid warning about not using AC_LANG_SOURCE

                                   5/14
                                   ----
bashline.[ch]
        - two new functions, bashline_set_event_hook and bashline_reset_event_hook,
          to set rl_event_hook to bash_event_hook and back to NULL, respectively
        - don't set rl_event_hook unconditionally

sig.c
        - termsig_sighandler: if the shell is currently interactive and
          readline is active, call bashline_set_event_hook to cause
          termsig_handler to be called via bash_event_hook when the shell
          returns from the signal handler

                                   5/15
                                   ----
lib/readline/display.c
        - _rl_col_width: Mac OS X has a bug in wcwidth: it does not return 0
          for UTF-8 combining characters.  Added workaround dependent on
          MACOSX.  Fixes problem pointed out by Thomas De Contes
          <d.l.tDecontes@free.fr>

                                   5/16
                                   ----
lib/readline/rlmbutil.h
        - WCWIDTH: wrapper for wcwidth that returns 0 for Unicode combining
          characters on systems where wcwidth is broken (e.g., Mac OS X).

lib/readline/{complete,display,mbutil}.c
        - use WCWIDTH instead of wcwidth

                                   5/17
                                   ----
lib/readline/display.c
        - update_line: after computing ofd and nfd, see whether the next
          character in ofd is a zero-width combining character.  If it is,
          back ofd and nfd up one, so the base characters no longer compare
          as equivalent.  Fixes problem reported by Keith Winstein
          <keithw@mit.edu>

lib/readline/nls.c
        - _rl_utf8locale: new flag variable, set to non-zero if the current
          locale is UTF-8
        - utf8locale(): new function, returns 1 if the passed lspec (or the
          current locale) indicates that the locale is UTF-8.  Called from
          _rl_init_eightbit

lib/readline/rlprivate.h
        - extern declaration for _rl_utf8locale

locale.c
        - locale_utf8locale: new flag variable, set to non-zero if the current
          locale is UTF-8 (currently unused)
        - locale_isutf8(): new function, returns 1 if the passed lspec (or the
          current locale) indicates that the locale is UTF-8.  Should be called
          whenever the locale or LC_CTYPE value is modified

aclocal.m4
        - BASH_WCWIDTH_BROKEN: new test for whether or not wcwidth returns
          zero-width characters like unicode combining characters as having
          display length 1; define WCWIDTH_BROKEN in this case

config.h.in
        - WCWIDTH_BROKEN: new define

lib/readline/rlmbutil.h
        - change WCWIDTH macro to use _rl_utf8locale and the full range of
          Unicode combining characters (U+0300-U+036F)

                                   5/19
                                   ----
lib/readline/rlprivate.h
        - _rl_search_context: new member, prevc, will hold character read
          prior to lastc

lib/readline/isearch.c
        - _rl_isearch_dispatch: if the character causes us to index into
          another keymap, save that character in cxt->prevc
        - _rl_isearch_dispatch: if we index into another keymap, but don't
          find a function that's special to i-search, and the character that
          caused us to index into that keymap would have terminated the
          search, push back cxt->prevc and cxt->lastc to make it appear as
          if `prevc' terminated the search, and execute lastc as a command.
          We have to push prevc back so we index into the same keymap before
          we read lastc.  Fixes bug report from Davor Cubranic
          <cubranic@stat.ubc.ca>

                                   5/20
                                   ----
expr.c
        - expr_bind_variable: pay attention to the return value from
          bind_variable and check whether or not we should error out due to
          a readonly or noassign variable.  Fixes bug reported by Eric
          Blake <eblake@redhat.com>

                                   5/26
                                   ----

lib/readline/search.c
        - include histlib.h for ANCHORED_SEARCH defines
        - rl_history_search_flags: new variable, holds ANCHORED_SEARCH flag for
          the duration of a history search
        - rl_history_search_reinit: takes a new flags variable, defines whether
          or not the search is anchored; assigned to rl_history_search_flags
        - rl_history_serarch_reinit: if ANCHORED_SEARCH flag passed, add ^ to
          beginning of search string; otherwise search string is unmodified
        - rl_history_search_internal: set rl_point appropriately based on
          whether or not rl_history_search_flags includes ANCHORED_SEARCH
        - rl_history_substr_search_forward: new function, for non-anchored
          substring search forward through history for string of characters
          preceding rl_point
        - rl_history_substr_search_backward: new function, for non-anchored
          substring search backward through history for string of characters
          preceding rl_point.  Original code from Niraj Kulkarni
          <kulkarniniraj14@gmail.com>

lib/readline/readline.h
        - extern declarations for rl_history_substr_search_{for,back}ward

lib/readline/funmap.c
        - history-substring-search-forward: new bindable command, invokes
          rl_history_substr_search_forward
        - history-substring-search-backward: new bindable command, invokes
          rl_history_substr_search_backward

lib/readline/doc/{rluser.texi,readline.3}
        - document history-substring-search-forward and
          history-substring-search-backward

                                   5/27
                                   ----
{nojobs,jobs}.c
        - add support for DONT_REPORT_SIGTERM so that the shell doesn't print
          a message when a job exits due to SIGTERM since that's the default
          signal sent by the kill builtin.  Suggested by Marc Herbert
          <mark.herbert@gmail.com>

config-top.h
        - DONT_REPORT_SIGTERM: new user-modifiable setting.  Commented out
          by default

                                   5/28
                                   ----
lib/readline/bind.c
        - _rl_skip_to_delim: skip to a closing double quote or other delimiter,
          allowing backslash to quote any character, including the delimiter
        - rl_parse_and_bind: call _rl_skip_to_delim instead of using inline
          code
        - rl_parse_and_bind: allow quoted strings as the values of string
          variables.  Variable values without double quotes have trailing
          whitespace removed (which still allows embedded whitespace, for
          better or worse).  Fixes problem with string variables not matching
          in `set' command if values happen to have trailing spaces or tabs
          (debian bash bug #602762), but introduces slight incompatibility.

                                   5/29
                                   ----
doc/{bash.1,bashref.texi}
        - clarify unset description to specify that without options, a
          variable, then a shell function if there is no variable by that
          name, is unset.  Fixes discrepancy reported by Mu Qiao
          <qiaomuf@gentoo.org>

                                   6/4
                                   ----
doc/{bash.1,bashref.texi}
        - clarify description of LINES and COLUMNS (and checkwinsize shopt
          option) to make it clear that only interactive shells set a
          handler for SIGWINCH and update LINES and COLUMNS.  Original
          report submitted by Jonathan Nieder <jrnieder@gmail.com>

arrayfunc.c
        - expand_compound_array_assignment: defer expansion of words between
          parens when performing compound assignmnt to an associative array
          variable
        - assign_compound_array_list: perform the same expansions when doing
          a compound array assignment to an associative array variable as
          when doing a straight array index assignment.  The idea is that
                foo=( [ind1]=bar [ind2]=quux)
          is the same as
                foo[ind1]=bar ; foo[ind2]=quux

          This fixes problems with double-expansion and quote removal being
          performed on the array indices

                                   6/13
                                   ----
doc/{bash.1,bashref.texi}
        - Add a little text to make it clear that the locale determines how
          range expressions in glob patterns are handled.


                                   6/21
                                   ----
builtins/read.def
        - display a message and return error status if -a is used with an
          existing associative array.  Fixes bug reported by Curtis Doty
          <curtis@greenkey.net>

                                   6/24
                                   ----
{jobs,nojobs}.c
        - non-interactive shells now react to the setting of checkwinsize
          and set LINES and COLUMNS after a foreground job exits.  From a
          suggestion by Leslie Rhorer <lrhorer@satx.rr.com>

doc/{bash.1,bashref.texi}
        - checkwinsize: remove language saying that only interactive shells
          check the window size after each command

lib/readline/histfile.c
        - history_backupfile: new file, creates a backup history file name
          given a filename (appending `-')
        - history_do_write: when overwriting the history file, back it up
          before writing.  Restore backup file on a write error.  Suggested
          by chkno@chkno.net

bashline.c
        - find_cmd_name: two new arguments, return the start and end of the
          actual text string used to find the command name, without taking
          whitespace into account
        - attempt_shell_completion: small changes to make sure that completion
          attempted at the beginning of a non-empty line does not find a
          programmable completion, even if the command name starts at point
        - attempt_shell_completion: small change to make sure that completion
          does not find a progcomp when in whitespace before the command
          name
        - attempt_shell_completion: small change to make sure that completion
          does not find a progcomp when point is at the first character of a
          command name, even when there is leading whitespace (similar to
          above).  Fixes problems noted by Ville Skytta <ville.skytta@iki.fi>

subst.c
        - brace_expand_word_list: since the individual strings in the strvec
          returned by brace_expand are already allocated, don't copy them to
          newly-allocated memory when building the WORD_LIST, just use them
          intact

locale.c
        - locale_mb_cur_max: cache value of MB_CUR_MAX when we set or change
          the locale to avoid a function call every time we need to read it

shell.h
        - new struct to save shell_input_line and associated variables:
          shell_input_line_state_t
        - add members of sh_parser_state_t to save and restore token and the
          size of the token buffer

parse.y
        - {save,restore}_input_line_state: new functions to save and restore
          shell_input_line and associated variables
        - {save,restore}_parser_state: add code to save and restore the token
          and token buffer size
        - xparse_dolparen: call save_ and restore_input_line_state to avoid
          problems with overwriting shell_input_line when we recursively
          call the parser to parse a command substitution.  Fixes bug
          reported by Rui Santos <rsantos@grupopie.com>

include/shmbutil.h
        - use locale_mb_cur_max instead of MB_CUR_MAX in ADVANCE_CHAR and
          similar macros

lib/glob/smatch.c
        - rangecmp,rangecmp_wc: change to take an additional argument, which
          forces the use of strcoll/wscoll when non-zero.  If it's 0, a new
          variable `glob_asciirange' controls whether or not we use strcoll/
          wscoll.  If glob_asciirange is non-zero, we use straight
          C-locale-like ordering. Suggested by  Aharon Robbins
          <arnold@skeeve.com>

                                   6/30
                                   ----
execute_cmd.c
        - execute_pipeline: make sure the lastpipe code is protected by
          #ifdef JOB_CONTROL.  Fixes problem reported by Thomas Cort
          <tcort@minix3.org>

                                    7/2
                                    ---
lib/readline/complete.c
        - EXPERIMENTAL: remove setting of _rl_interrupt_immediately around
          completion functions that touch the file system.  Idea from Jan
          Kratochvil <jan.ktratochvil@redhat.com> and the GDB development
          team

lib/readline/signals.c
        - rl_signal_handler: if we're in callback mode, don't interrupt
          immediately on a SIGWINCH

                                    7/3
                                    ---
bashline.c
        - set_directory_hook: and its siblings are a new set of functions to
          set, save, and restore the appropriate directory completion hook
        - change callers to use {set,save,restore}_directory_hook instead of
          manipulating rl_directory_rewrite_hook directly
        - dircomplete_expand: new variable, defaults to 0, if non-zero causes
          directory names to be word-expanded during word and filename
          completion
        - change {set,save,restore}_directory_hook to look at dircomplete_expand
          and change rl_directory_completion_hook or rl_directory_rewrite_hook
          appropriately

bashline.h
        - extern declaration for set_directory_hook so shopt code can use it

                                    7/6
                                    ---
builtins/shopt.def
        - globasciiranges: new settable shopt option, makes glob ranges act
          as if in the C locale (so b no longer comes between A and B).
          Suggested by Aharon Robbins <arnold@skeeve.com>

                                    7/7
                                    ---
doc/{bash.1,bashref.texi}
        - document new `globasciiranges' shopt option

                                    7/8
                                    ---
builtins/shopt.def
        - direxpand: new settable option, makes filename completion expand
          variables in directory names like bash-4.1 did.
        - shopt_set_complete_direxpand: new function, does the work for the
          above by calling set_directory_hook

doc/{bash.1,bashref.texi}
        - document new `direxpand' shopt option

                                   7/15
                                   ----
lib/readline/isearch.c
        - _rl_isearch_dispatch: when adding character to search string, use
          cxt->lastc (which we use in the switch statement) instead of c,
          since lastc can be modified earlier in the function

                                   7/18
                                   ----
lib/readline/rlprivate.h
        - _rl_search_context: add another member to save previous value of
          (multibyte) lastc: pmb is to mb as prevc is to lastc

lib/readline/isearch.c:
        - _rl_isearch_dispatch: if a key sequence indexes into a new keymap,
          but doesn't find any bound function (k[ind].function == 0) or is
          bound to self-insert (k[ind].function == rl_insert), back up and
          insert the previous character (the one that caused the index into a
          new keymap) and arrange things so the current character is the next
          one read, so both of them end up in the search string.  Fixes bug
          reported by Clark Wang <dearvoid@gmail.com>
        - _rl_isearch_dispatch: a couple of efficiency improvements when adding
          characters to the isearch string

                                   7/24
                                   ----
lib/readline/isearch.c
        - _rl_isearch_dispatch: save and restore cxt->mb and cxt->pmb
          appropriately when in a multibyte locale

doc/{bash.1,bashref.texi}
        - correct description of {x}>file (and other redirection operators
          that allocate a file descriptor) to note the the fd range is
          greater than or equal to 10.  Fixes problem reported by
          Christian Ullrich 

lib/readline/signals.c
        - rl_signal_handler: don't interrupt immediately if in callback mode

lib/readline/callback.c
        - rl_callback_read_char: install signal handlers only when readline
          has control in callback mode, so readline's signal handlers aren't
          called when the application is active (e.g., between the calls to
          rl_callback_handler_install and rl_callback_read_char).  If the
          readline signal handlers only set a flag, which the application
          doesn't know about, the signals will effectively be ignored until
          the next time the application calls into the readline callback
          interface.  Fixes problem of calling unsafe functions from signal
          handlers when in callback mode reported by Jan Kratochvil
          <jan.kratochvil@redhat.com>

execute_cmd.c
        - fix_assignment_words: when in Posix mode, the `command' builtin
          doesn't change whether or not the command name it protects is an
          assignment builtin.  One or more instances of `command'
          preceding `export', for instance, doesn't make `export' treat its
          assignment statement arguments differently.  Posix interpretation
          #351

doc/{bash.1,bashref.texi}
        - document new Posix-mode behavior of `command' when preceding builtins
          that take assignment statements as arguments

builtins/printf.def
        - printstr: if fieldwidth or precision are < 0 or > INT_MAX when
          supplied explicitly (since we take care of the `-' separately),
          clamp at INT_MAX like when using getint().  Fixes issue reported
          by Ralph Coredroy <ralph@inputplus.co.uk>

                                   7/25
                                   ----
lib/readline/chardefs.h
        - isxdigit: don't define if compiling with c++; declared as a c++
          template function.  Fixes bug reported by Miroslav Lichvar
          <mlichvar@redhat.com>

builtins/printf.def
        - getint: if garglist == 0, return whatever getintmax returns (0).
          Fixes bug reported  by Ralph Coredroy <ralph@inputplus.co.uk>

                                   7/28
                                   ----
doc/{bash.1,bashref.texi}
        - minor changes to the descriptions of the cd and pushd builtins

lib/sh/zread.c
        - zsyncfd: change variable holding return value from lseek to
          off_t.  Bug report and fix from Gregory Margo <gmargo@pacbell.net>

                                    8/1
                                    ---
expr.c
        - don't check for division by 0 when in a context where no evaluation
          is taking place.  Fixes bug reported by dnade.ext@orange-ftgroup.com

                                    8/6
                                    ---
execute_cmd.c
        - execute_command_internal: the parent branch of the subshell code
          (where the child calls execute_in_subshell) should not close all
          open FIFOs with unlink_fifo_list if it's part of a shell function
          that's still executing.  Fixes bug reported by Maarten Billemont
          <lhunath@lyndir.com>

                                    8/9
                                    ---
builtins/common.c
        - get_exitstat: return EX_BADUSAGE (2) on a non-numeric argument

builtins/return.def
        - return_builtin: just call get_exitstat to get the return status,
          let it handle proper parsing and handling of arguments.  Fixes
          issue most recently raised by Linda Walsh <bash@tlinx.org>.
          Reverses change from 9/11/2008 (see above)

                                   8/16
                                   ----
doc/{bash.1,bashref.texi}
        - clean up `set -e' language to make it clearer that any failure of
          a compound command will cause the shell to exit, not just subshells
          and brace commands

                                   8/17
                                   ----
configure.in
        - make the various XXX_FOR_BUILD variables `precious' to autoconf to
          avoid stale data
        - change how CC_FOR_BUILD is initialized when cross-compiling and not,
          but do not change behavior
        - initialize CFLAGS_FOR_BUILD to -g when cross-compiling
        - initialize LIBS_FOR_BUILD to $(LIBS) when not cross-compiling, empty
          when cross-compiling
        - create AUTO_CFLAGS variable to hold basic CFLAGS defaults; used when
          CFLAGS not inherited from environment (like effect of old
          auto_cflags variable)
        - substitute LIBS_FOR_BUILD into output Makefiles
          [changes inspired by bug report from Nathan Phillip Brink
          <ohnobinki@ohnopublishing.net> -- gentoo bug 378941]

builtins/Makefile.in    
        - substitute LIBS_FOR_BUILD from configure, not strictly initialized
          to $(LIBS)

                                   8/27
                                   ----
doc/{bash.1,bashref.texi}
        - minor changes to the here string description to clarify the
          expansions performed on the word

support/shobj-conf
        - handle compilation on Lion (Mac OS X 10.7/darwin11) with changes
          to darwin stanzas.  Fixes readline bug reported by Vincent
          Sheffer <vince.sheffer@apisphere.com>

lib/sh/strtrans.c
        - ansic_wshouldquote: check a string with multi-byte characters for
          characters that needs to be backslash-octal escaped for $'...'
        - ansic_shouldquote: if is_basic fails for one character, let
          ansic_wshouldquote examine the rest of the string and return what
          it returns.  From a patch sent by Roman Rakus <rrakus@redhat.com>

                                   8/30
                                   ----
lib/sh/strtrans.c
        - ansic_quote: changes to quote (or not) multibyte characters.  New
          code converts them to wide characters and uses iswprint to check
          valid wide chars.  From a patch sent by Roman Rakus
          <rrakus@redhat.com>

                                    9/7
                                    ---
lib/sh/shquote.c
        - sh_backslash_quote: change to be table-driven so we can use a
          different table if we want to
        - sh_backslash_quote: takes a second char table[256] argument;

externs.h
        - sh_backslash_quote: add second argument to function prototype

bashline.c,braces.c,parse.y,builtins/printf.def
        - change callers of sh_backslash_quote to add second argument

bashline.c
        - filename_bstab: table of characters to pass to sh_backslash_quote;
          characters with value 1 will be backslash-quoted
        - set_filename_bstab: turn on characters in filename backslash-quote
          table according to passed string argument
        - call set_filename_bstab every time rl_filename_quote_characters is
          assigned a value
        - bash_quote_filename: call sh_backslash_quote with filename_bstab
          as second argument.  This allows other characters in filenames to
          be quoted without quoting, for instance, a dollar sign in a shell
          variable reference

                                    9/8
                                    ---
bashline.c
        - complete_fullquote: new variable, controls table passed to
          sh_backslash_quote.  If non-zero (the default), the standard set
          of shell metacharacters -- as in bash versions up to and including
          bash-4.2 -- gets backslash-quoted by the completion code.  If zero,
          sh_backslash_quote gets the table with the characters in the
          variable reference removed, which means they are removed from the
          set of characters to be quoted in filenames

                                   9/10
                                   ----
bashline.c
        - bash_filename_stat_hook: new function, designed to expand variable
          references in filenames before readline passes them to stat(2)
          to determine whether or not they are a directory

                                   9/15
                                   ----
builtins/declare.def
        - if assign_array_element fails due to a bad (or empty) subscript, mark
          it as an assignment error and don't attempt any further processing
          of that declaration.  Fixes segfault bug reported by Diego Augusto
          Molina <diegoaugustomolina@gmail.com>

                                   9/19
                                   ----
expr.c
        - exppower: replace the simple exponentiation algorithm with an
          implementation of exponentiation by squaring.  Inspired by report
          from Nicolas ARGYROU <nargy@yahoo.com>

bashline.c
        - bash_quote_filename: check for rtext being non-null before
          dereferencing it
        - set_saved_history: operate_and_get_next assumes that the previous
          line was added to the history, even when the history is stifled and
          at the max number of entries.  If it wasn't, make sure the history
          number is incremented properly.  Partial fix for bug reported by
          gregrwm <backuppc-users@whitleymott.net>

doc/{bash.1,bashref.texi},lib/readline/doc/{hsuser,rluser}.texi
        - minor editorial changes inspired by suggestions from
          Roger Zauner <rogerx.oss@gmail.com>

                                   9/20
                                   ----
lib/intl/localealias.c
        - read_alias_file: close resource leak (fp) when returning on error

                                   9/22
                                   ----
execute_command.c
        - execute_intern_function: implement Posix interpretation 383 by making
          it an error to define a function with the same name as a special
          builtin when in Posix mode.
          http://austingroupbugs.net/view.php?id=383#c692

                                   9/25
                                   ----
doc/{bash.1,bashref.texi}
        - formatting and some content changes from Benno Schulenberg
          <bensberg@justemail.net>
        - document new posix-mode behavior from interp 383 change of 9/22

                                   9/30
                                   ----
execute_cmd.c
        - shell_execve: add strerror to error message about executable file
          that shell can't execute as a shell script.  From suggestion by
          daysleeper <daysleeper@centrum.cz>

                                   10/1
                                   ----
bashhist.c
        - maybe_add_history: act as if literal_history is set when parser_state
          includes PST_HEREDOC, so we save the bodies of here-documents just
          as they were entered.  Fixes bug reported by Jonathan Wakely
          <bugs@kayari.org>
        - bash_add_history: make sure that the second and subsequent lines of
          a here document don't have extra newlines or other delimiting
          chars added, since they have the trailing newline preserved, when
          `lithist' is set and history_delimiting_chars isn't called

execute_cmd.c
        - execute_command_internal: avoid fd exhaustion caused by using
          process substitution in loops inside shell functions by using
          copy_fifo_list and close_new_fifos ().  Fixes debian bash bug
          642504

lib/readline/complete.c
        - new variable, rl_filename_stat_hook, used by append_to_match.  If
          filename completion is desired, and rl_filename_stat_hook points
          to a function, call that function to expand the filename in an
          application-specific way before calling stat.

bashline.c
        - bash_default_completion: if variable completion returns a single
          match, use bash_filename_stat_hook and file_isdir to determine
          whether or not the variable name expands to a directory.  If it
          does, set the filename_append_character to `/'.  This is not
          perfect, so we will see how it works out.  Adds functionality
          requested by Peter Toft <pto@linuxbog.dk> and Patrick Pfeifer
          <patrick@pfeifer.de>
        - rl_filename_stat_hook: assigned bash_filename_stat_hook, so things
          like $HOME/Downloads (after completion) have a slash appended.
          In general, this causes the stat hook to be called whenever
          filename completion is appended.  Adds functionality requested by
          Patrick Pfeifer <patrick@pfeifer.de>

lib/readline/readline.h
        - new extern declaration for rl_filename_stat_hook

lib/readline/doc/rltech.texi
        - rl_directory_rewrite_hook: now documented
        - rl_filename_stat_hook: document

pcomplete.c
        - gen_action_completions: in the CA_DIRECTORY case, turn off
          rl_filename_completion_desired if it was off before we called
          rl_filename_completion_function and we didn't get any matches.
          Having it on causes readline to quote the matches as if they
          were filenames.  Adds functionality requested by many,
          including Clark Wang <dearvoid@gmail.com>

assoc.[ch]
        - assoc_replace: new function, takes the same arguments as
          assoc_insert, but returns the old data instead of freeing it
        - assoc_insert: if the object returned by hash_insert doesn't have
          the same value for its key as the key passed as an argument, we
          are overwriting an existing value.  In this case, we can free the
          key.  Fixes bug reported by David Parks <davidparks21@yahoo.com>

                                   10/5
                                   ----
print_cmd.c
        - indirection_level_string: small change to only re-enable `x'
          option after calling decode_prompt_string if it was on before.  In
          normal mode, it will be, but John Reiser <jreiser@bitwagon.com>
          has a novel use for that code in conjunction with a pre-loaded
          shared library that traces system call usage in shell scripts

                                   10/10
                                   -----
Makefile.in
        - Fix from Mike Frysinger <vapier@gentoo.org> to avoid trying to
          build y.tab.c and y.tab.h with two separate runs of yacc if
          parse.y changes.  Problem with parallel makes
        - Fix from Mike Frysinger <vapier@gentoo.org> to avoid subdirectory
          builds each trying to make version.h (and all its dependencies)

lib/sh/Makefile.in
        - remove some dependencies on version.h where it doesn't make sense

variables.c
        - initialize_shell_variables: while reading the environment, a shell
          running in posix mode now checks for SHELLOPTS being readonly (it
          gets set early on in main()) before trying to assign to it.  It
          saves an error message and the variable gets parsed as it should.
          Fixes bug reported by Len Giambrone <Len.Giambrone@intersystems.com>

                                   10/14
                                   -----
doc/{bash.1,bashref.texi}
        - add to the "duplicating file descriptors" description that >&word
          doesn't redirect stdout and stderr if word expands to `-'
        - add to the "appending standard output and standard error"
          description a note that >&word, where word is a number or `-',
          causes other redirection operators to apply for sh and Posix
          compatibility reasons.  Suggested by Greg Wooledge
          <wooledg@eeg.ccf.org>

                                   10/15
                                   -----
pcomplete.c
        - change pcomp_filename_completion_function to only run the filename
          dequoting function in the cases (as best as it can figure) where
          readline won't do it via rl_filename_completion_function.  Based
          on reports from <lolilolicon@gmail.com>

                                   10/19
                                   -----
bashline.c
        - attempt_shell_completion: add call to set_directory_hook() to make
          sure the rewrite functions are correct.  It's cheap and doesn't
          hurt
        - command_word_completion_function: if completing a command name that
          starts with `.' or `..', temporarily suppress the effects of the
          `direxpand' option and restore the correct value after calling
          rl_filename_completion_function.  If it's enabled, the directory
          name will be rewritten and no longer match `./' or `../'.  Fixes
          problem reported by Michael Kalisz <michael@kalisz.homelinux.net>

                                   10/22
                                   -----
builtins/history.def
        - push_history: make sure remember_on_history is enabled before we
          try to delete the last history entry -- the `history -s' command
          might not have been saved.  Fixes bug reported by
          lester@vmw-les.eng.vmware.com

lib/readline/complete.c
        - rl_callback_read_char: add calls to a macro CALLBACK_READ_RETURN
          instead of straight return; add same call at end of function.
          Placeholder for future work in deinstalling signal handlers when
          readline is not active

                                   10/25
                                   -----
expr.c
        - exp2: catch arithmetic overflow when val1 == INTMAX_MIN and val2 == -1
          for DIV and MOD and avoid SIGFPE.  Bug report and pointer to fix
          from Jaak Ristioja <jaak.ristioja@cyber.ee>
        - expassign: same changes for arithmetic overflow for DIV and MOD

                                   10/28
                                   -----
subst.c
        - parameter_brace_expand: allow pattern substitution when there is an
          expansion of the form ${var/} as a no-op: replacing nothing with
          nothing
        - parameter_brace_patsub: don't need to check for PATSUB being NULL;
          it never is

flags.c
        - if STRICT_POSIX is defined, initialize history_expansion to 0, since
          history expansion (and its treatment of ! within double quotes) is
          not a conforming posix environment.  From austin-group issue 500

lib/readline/histexpand.c
        - history_expand: when processing a string within double quotes
          (DQUOTE == 1), make the closing double quote inhibit history
          expansion, as if the word were outside double quotes.  In effect,
          we assume that the double quote is followed by a character in
          history_no_expand_chars.  tcsh and csh seem to do this.  This
          answers a persistent complaint about history expansion

                                   10/29
                                   -----
make_cmd.c
        - make_arith_for_command: use skip_to_delim to find the next `;'
          when breaking the string between the double parens into three
          separate components instead of a simple character loop.  Fixes
          bug reported by Dan Douglas <ormaaj@gmail.com>

                                   11/2
                                   ----
Makefile.in
        - make libbuiltins.a depend on builtext.h to serialize its creation
          and avoid conflict between multiple invocations of mkbuiltins.
          Fix from Mike Frysinger <vapier@gentoo.org>

                                   11/5
                                   ----
findcmd.c
        - user_command_matches: if stat(".", ...) returns -1, set st_dev
          and st_ino fields in dotinfo to 0 to avoid same_file matches
        - find_user_command_in_path: check stat(2) return the same way

lib/glob/glob.c
        - glob_vector: don't call strlen(pat) without checking pat == 0
        - glob_dir_to_array: make sure to free `result' and all allocated
          members before returning error due to malloc failure
        - glob_vector: make sure to free `nextname' and `npat' on errors
          (mostly when setting lose = 1)
        - glob_vector: if flags & GX_MATCHDIRS but not GX_ALLDIRS, make
          sure we free `subdir'
        - glob_filename: when expanding ** (GX_ALLDIRS), make sure we
          free temp_results (return value from glob_vector)

lib/glob/xmbsrtowcs.c
        - xdupmbstowcs: fix call to realloc to use sizeof (char *) instead
          of sizeof (char **) when assigning idxtmp

execute_cmd.c
        - print_index_and_element: return 0 right away if L == 0
        - is_dirname: fix memory leak by freeing `temp'
        - time_command: don't try to deref NULL `command' when assigning
          to `posix_time'
        - shell_execve: null-terminate `sample' after READ_SAMPLE_BUF so it's
          terminated for functions that expect that

builtins/read.def
        - read_builtin: don't call bind_read_variable with a potentially-null
          string

pcomplete.c
        - gen_command_matches: don't call dispose_word_desc with a NULL arg
        - gen_compspec_completions: fix memory leak by freeing `ret' before
          calling gen_action_completions (tcs, ...).  happens when
          performing directory completion as default and no completions
          have been generated
        - gen_progcomp_completions: make sure to set foundp to 0 whenever
          returning NULL
        - it_init_aliases: fix memory leak by freeing alias_list before
          returning

bashline.c
        - command_word_completion_function: don't call restore_tilde with a
          NULL directory_part argument
        - bash_directory_expansion: bugfix: don't throw away results of
          rl_directory_rewrite_hook if it's set and returns non-zero
        - bind_keyseq_to_unix_command: free `kseq' before returning error

arrayfunc.c
        - assign_array_element_internal: make sure `akey' is freed if non-null
          before returning error
        - assign_compound_array_list: free `akey' before returning error
        - array_value_internal: free `akey' before returning error
        - unbind_array_element: free `akey' before returning error

subst.c
        - array_length_reference: free `akey' before returning error in case
          of expand_assignment_string_to_string error
        - array_length_reference: free `akey' after call to assoc_reference
        - skip_to_delim: if skipping process and command substitution, free
          return value from extract_process_subst
        - parameter_brace_substring: free `val' (vtype == VT_VARIABLE) before
          returning if verify_substring_values fails
        - parameter_brace_expand: remove two duplicate lines that allocate
          ret in parameter_brace_substring case
        - parameter_brace_expand: convert `free (name); name = xmalloc (...)'
          to use `xrealloc (name, ...)'
        - parameter_brace_expand: free `name' before returning when handling
          ${!PREFIX*} expansion
        - split_at_delims: fix memory leak by freeing `d2' before returning

redir.c
        - redirection_error: free `filename' if the redirection operator is
          REDIR_VARASSIGN by assigning allocname

eval.c
        - send_pwd_to_eterm: fix memory leak by freeing value returned by
          get_working_directory()

builtins/cd.def
        - change_to_directory: fix memory leak by freeing return value from
          resetpwd()
        - cd_builtin: fix memory leak by freeing value returned by dirspell()
        - cd_builtin: fix memory leak by freeing `directory' if appropriate
          before overwriting with return value from resetpwd()

builtins/type.def
        - describe_command: free `full_path' before overwriting it with return
          value from sh_makepath

builtins/complete.def
        - compgen_builtin: fix memory leak by calling strlist_dispose (sl)
          before overwriting sl with return value from completions_to_stringlist

builtins/hash.def
        - list_hashed_filename_targets: fix memory leak by freeing `target'

make_cmd.c
        - make_arith_for_command: free `init', `test', and `step' before
          returning error on parse error

jobs.c
        - initialize_job_control: don't call move_to_high_fd if shell_tty == -1

general.c
        - check_dev_tty: don't call close with an fd < 0
        - legal_number: deal with NULL `string' argument, return invalid

lib/sh/fmtulong.c
        - fmtulong: if the `base' argument is invalid, make sure we index
          buf by `len-1' at maximum

print_cmd.c
        - print_deferred_heredocs: don't try to dereference a NULL `cstring'
        - cprintf: make sure to call va_end (args)

variables.c
        - push_dollar_vars: fix call to xrealloc to use sizeof (WORD_LIST *)
          instead of sizeof (WORD_LIST **)

lib/sh/zmapfd.c
        - zmapfd: if read returns error, free result and return -1 immediately
          instead of trying to reallocate it

                                   11/6
                                   ----
execute_cmd.c
        - cpl_reap: rewrote to avoid using pointer after freeing it; now builds
          new coproc list on the fly while traversing the old one and sets the
          right values for coproc_list when done

                                   11/12
                                   -----
builtins/set.def
        - if neither -f nor -v supplied, don't allow a readonly function to
          be implicitly unset.  Fixes bug reported by Jens Schmidt
          <jens.schmidt35@arcor.de>

lib/readline/callback.c
        - change CALLBACK_READ_RETURN to clear signal handlers before returning
          from rl_callback_read_char so readline's signal handlers aren't
          installed when readline doesn't have control.  Idea from Jan
          Kratochvil <jan.ktratochvil@redhat.com> and the GDB development
          team

pcomplete.h
        - COPT_NOQUOTE: new complete/compgen option value

builtins/complete.def
        - noquote: new complete/compgen option; will be used to disable
          filename completion quoting

pcomplete.c
        - pcomp_set_readline_variables: pay attention to COPT_NOQUOTE; turns
          of rl_filename_quoting_desired if set; turns it on if unset (value
          is inverted, since default is on)

doc/bash.1,lib/readline/doc/rluser.texi
        - document new -o noquote option to complete/compgen/compopt

pathexp.c
        - quote_string_for_globbing: if QGLOB_REGEXP, make sure characters
          between brackets in an ERE bracket expression are not inappropriately
          quoted with backslashes.  This is a pretty substantial change,
          should be stressed when opening bash up for alpha and beta tests.
          Fixes bug pointed out by Stephane Chazleas
          <stephane_chazelas@yahoo.fr>

doc/{bash.1,bashref.texi}
        - document that regexp matches can be inconsistent when quoting
          characters in bracket expressions, since usual quoting characters
          lose their meaning within brackets
        - note that regular expression matching when the pattern is stored
          in a shell variable which is quoted for expansion causes string
          matching

redir.h
        - RX_SAVEFD: new flag value; notes that a redirection denotes an
          fd used to save another even if it's not >= SHELL_FD_BASE

redir.c
        - do_redirection_internal: when deciding whether or not to reset the
          close-on-exec flag on a restored file descriptor, trust the value
          of redirect->flags & RX_SAVCLEXEC even if the fd is < SHELL_FD_BASE
          if the RX_SAVEFD flag is set
        - add_undo_redirect: set the RX_SAVEFD flag if the file descriptor
          limit is such that the shell can't duplicate to a file descriptor
          >= 10.  Fixes a limitation that tripped a coreutils test reported
          by Paul Eggert <eggert@cs.ucla.edu>

                                   11/19
                                   -----
doc/{bash.1,bashref.texi},lib/readline/doc/hsuser.texi
        - make it clear that bash runs HISTFILESIZE=$HISTSIZE after reading
          the startup files
        - make it clear that bash runs HISTSIZE=500 after reading the
          startup files
        - make it clear that setting HISTSIZE=0 causes commands to not be
          saved in the history list
        - make it clear that setting HISTFILESIZE=0 causes the history file
          to be truncated to zero size

variables.c
        - sv_histsize: change so setting HISTSIZE to a value less than 0
          causes the history to be `unstifled'
        - sv_histsize: change so setting HISTFILESIZE to a value less than 0
          results in no file truncation
        - make it clear that numeric values less than 0 for HISTFILESIZE or
          HISTSIZE inhibit the usual functions

                                   11/23
                                   -----
parse.y
        - save_input_line_state: add missing `return ls' at the end, since the
          function is supposed to return its argument.  Pointed out by
          Andreas Schwab <schwab@linux-m68k.org>

builtins/read.def
        - skip over NUL bytes in input, as most modern shells seem to.  Bug
          report by Matthew Story <matt@tablethotels.com>

lib/readline/vi_mode.c
        - rl_vi_replace: set _rl_vi_last_key_before_insert to invoking key

                                   11/25
                                   -----
builtins/read.def
        - read_builtin: if xrealloc returns same pointer as first argument,
          don't bother with the remove_unwind_protect/add_unwind_protect pair
        - read_builtin: set a flag (`reading') around calls to zread/zreadc
          and readline()
        - sigalrm: change to set flag (`sigalrm_seen') and only longjmp if
          currently in read(2) (reading != 0)
        - CHECK_ALRM: new macro, checks sigalrm_seen and longjmps if non-zero,
          behavior of old SIGALRM catching function
        - read_builtin: call CHECK_ALRM in appropriate places while reading
          line of input.  Fixes bug reported by Pierre Gaston
          <pierre.gaston@gmail.com>

lib/readline/vi_mode.c
        - rl_vi_replace: initialize characters before printing characters in
          vi_replace_keymap to their default values in vi_insertion_keymap,
          since we're supposed to be in insert mode replacing characters
        - rl_vi_replace: call rl_vi_start_inserting to set last command to
          `R' for undo
        - rl_vi_replace: set _rl_vi_last_key_before_insert to `R' for future
          use by _rl_vi_done_inserting
        - vi_save_insert_buffer: new function, broke out code that copies text
          into vi_insert_buffer from _rl_vi_save_insert
        - _rl_vi_save_replace: new function, saves text modified by
          rl_vi_replace (using current point and vi_replace_count to figure
          it out) to vi_replace_buffer
        - _rl_vi_save_insert: call vi_save_insert_buffer
        - _rl_vi_done_inserting: if _rl_vi_last_key_before_insert == 'R', call
          _rl_vi_save_replace to save text modified in replace mode (uses
          vi_save_insert_buffer)
        - _rl_vi_replace_insert: new function, replaces the number of chars
          in vi_insert_buffer after rl_point with contents ov vi_insert_buffer
        - rl_vi_redo: call _rl_vi_replace_insert if last command == 'R' and
          there's something in vi_insert_buffer.  Fixes bug with `.' not
          redoing the most recent `R' command, reported by Geoff Clare
          <g.clare@opengroup.org> in readline area on savannah

                                   11/26
                                   -----
lib/readline/rlprivate.h
        - RL_SIG_RECEIVED(): evaluate to non-zero if there is a pending signal
          to be handled
        - RL_SIGINT_RECEIVED(): evaluate to non-zero if there is a pending
          SIGINT to be handled

lib/readline/complete.c
        - remove all mention of _rl_interrupt_immediately
        - rl_completion_matches: check RL_SIG_RECEIVED after each call to
          the entry function, call RL_CHECK_SIGNALS if true to handle the
          signal
        - rl_completion_matches: if RL_SIG_RECEIVED evaluates to true, free
          and zero out the match_list this function allocated
        - rl_completion_matches: if the completion entry function is
          rl_filename_completion_function, free the contents of match_list,
          because that function does not keep state and will not free the
          entries; avoids possible memory leak pointed out by
          Garrett Cooper <yanegomi@gmail.com>
        - gen_completion_matches: if RL_SIG_RECEIVED evalutes to true after
          calling rl_attempted_completion_function, free the returned match
          list and handle the signal with RL_CHECK_SIGNALS; avoids
          possible memory leak pointed out by Garrett Cooper
          <yanegomi@gmail.com>
        - gen_completion_matches: if RL_SIG_RECEIVED evaluates to true after
          calling rl_completion_matches, free the returned match list and
          handle the signal with RL_CHECK_SIGNALS

lib/readline/util.c
        - rl_settracefp: new utility function to set the tracing FILE *

lib/readline/signals.c
        - _rl_sigcleanup: pointer to a function that will be called with the
          signal and a void * argument from _rl_handle_signal
        - _rl_sigcleanarg: void * that the rest of the code can set to have
          passed to the signal cleanup function
        - _rl_handle_signal: if _rl_sigcleanup set, call as
                (*_rl_sigcleanup) (sig, _rl_sigcleanarg)

lib/readline/rlprivate.h
        - extern declarations for _rl_sigcleanup and _rl_sigcleanarg

lib/readline/complete.c
        - _rl_complete_sigcleanup: signal cleanup function for completion code;
          calls _rl_free_match_list on _rl_sigcleanarg if signal == SIGINT
        - rl_complete_internal: before calling display_matches if what_to_do
          == `?', set _rl_sigcleanup to _rl_complete_sigcleanup so the match
          list gets freed on SIGINT; avoids possible memory leak pointed out
          by Garrett Cooper <yanegomi@gmail.com>
        - rl_complete_internal: in default switch case, call _rl_free_match_list
          before returning to avoid memory leak

doc/bashref.texi
        - start at a set of examples for the =~ regular expression matching
          operator, touching on keeping the pattern in a shell variable and
          quoting portions of the pattern to remove their special meaning

                                   12/1
                                   ----
lib/glob/gmisc.c
        - extglob_pattern: new function, returns 1 if pattern passed as an
          argument looks like an extended globbing pattern

lib/glob/glob.c
        - skipname: return 0 immediately if extglob_pattern returns non-zero,
          let the extended globbing code do the right thing with skipping
          names beginning with a `.'
        - mbskipname: return 0 immediately if extglob_pattern returns non-zero,
          let the extended globbing code do the right thing with skipping
          names beginning with a `.'.  Fixes bug reported by Yongzhi Pan
          <panyongzhi@gmail.com>

                                   12/2
                                   ----
lib/glob/smatch.c
        - patscan, patscan_wc: no longer static so other parts of the glob
          library can use them, renamed to glob_patscan, glob_patscan_wc

lib/glob/glob.c
        - extern declarations for glob_patscan, glob_patscan_wc
        - wchkname: new function, does skipname on wchar_t pattern and dname,
          old body of mbskipname after converting to wide chars
        - extglob_skipname: new function, checks all subpatterns in an extglob
          pattern to determine whether or not a filename should be skipped.
          Calls skipname for each subpattern.  Dname is only skipped if all
          subpatterns indicate it should be.  Better fix for bug reported by
          Yongzhi Pan <panyongzhi@gmail.com>
        - wextglob_skipname: wide-char version of extglob_skipname, calls
          wchkname instead of calling back into mbskipname for each
          subpattern to avoid problems with char/wchar_t mismatch
        - skipname: call extglob_skipname if extglob_pattern returns non-zero
        - mbskipname: call wextglob_skipname if extglob_pattern returns non-zero
        - mbskipname: short-circuit immediately if no multibyte chars in
          pattern or filename

execute_cmd.c
        - execute_cond_node: added parens to patmatch assignment statement to
          make intent clearer

                                   12/3
                                   ----
configure.in,config.h.in
        - check for imaxdiv, define HAVE_IMAXDIV if present

expr.c
        - expassign, exp2: use imaxdiv if available.  Doesn't help with checks
          for overflow from 10/25

                                   12/6
                                   ----
lib/readline/complete.c
        - compute_lcd_of_matches: if we're ignoring case in the matches, only
          use what the user typed as the lcd if it matches the first match
          (after sorting) up to the length of what was typed (if what the
          user typed is longer than the shortest of the possible matches, use
          the shortest common length of the matches instead).  If it doesn't
          match, use the first of the list of matches, as if case were not
          being ignored.  Fixes bug reported by Clark Wang
          <dearvoid@gmail.com>

                                   12/7
                                   ----
builtins/cd.def
        - cd_builtin: add code to return error in case cd has more than one
          non-option argument, conditional on CD_COMPLAINS define (which is
          not defined anywhere)

doc/{bash.1,bashref.texi}
        - note that additional arguments to cd following the directory name
          are ignored.  Suggested by Vaclav Hanzl <hanzl@noel.feld.cvut.cz>

                                   12/10
                                   -----
lib/readline/input.c
        - rl_read_key: don't need to increment key sequence length here; doing
          it leads to an off-by-one error

lib/readline/macro.c
        - rl_end_kbd_macro: after off-by-one error with rl_key_sequence_length
          fixed, can decrement current_macro_index by rl_key_sequence_length
          (length of key sequence that closes keyboard macro)

lib/readline/readline.c
        - _rl_dispatch_subseq: fix extra increment of rl_key_sequence_length
          when ESC maps to a new keymap and we're converting meta characters
          to ESC+key
        - _rl_dispatch_subseq: better increment of rl_key_sequence_length
          before we dispatch to a function in the ISFUNC case (where the
          second increment above should have happened)
        - rl_executing_keyseq: the full key sequence that ended up executing
          a readline command.  Available to the calling application, maintained
          by _rl_dispatch_subseq, indexed by rl_key_sequence_length
        - rl_executing_key: the key that was bound to the currently-executing
          readline command.  Same as the `key' argument to the function

lib/readline/readline.h
        - rl_executing_keyseq: extern declaration
        - rl_executing_key: extern declaration
        - rl_key_sequence_length: declaration moved here from rlprivate.h,
          now part of public interface

lib/readline/rlprivate.h
        - new extern declaration for _rl_executing_keyseq_size, buffer size
          for rl_executing_keyseq

lib/readline/doc/rltech.texi
        - documented new variables: rl_executing_key, rl_executing_keyseq,
          rl_key_sequence_length

                                   12/13
                                   -----
bashline.c
        - bash_execute_unix_command: replace ad-hoc code that searches
          cmd_xmap for correct command with call to rl_function_of_keyseq
          using rl_executing_keyseq; now supports key sequences longer
          than two characters.  Fixes bug reported by Michael Kazior
          <kazikcz@gmail.com>

                                   12/15
                                   -----
make_cmd.c
        - make_function_def: don't null out source_file before calling
          make_command so it can be used later on when the function definition
          is executed

execute_cmd.c
        - execute_intern_function: second argument is now FUNCTION_DEF *
          instead of COMMAND *
        - execute_command_internal: call execute_intern_function with the
          new second argument (the entire FUNCTION_DEF instead of just the
          command member)
        - execute_intern_function: if DEBUGGER is defined, call
          bind_function_def before calling bind_function, just like
          make_function_def does (might be able to take out the call in
          make_function_def depending on what the debugger does with it).
          Fixes bug reported by <dethrophes@motd005>

expr.c
        - more minor changes to cases of INTMAX_MIN % -1 and INTMAX_MIN / 1;
          fix typos and logic errors

                                   12/16
                                   -----
bashline.c
        - find_cmd_start: change flags to remove SD_NOSKIPCMD so it skips over
          command substitutions and doesn't treat them as command separators
        - attempt_shell_completion: instead of taking first return from
          find_cmd_name as command name to use for programmable completion,
          use loop to skip over assignment statements.  Fixes problem reported
          by Raphael Droz <raphael.droz+floss@gmail.com>
        - attempt_shell_completion: if we don't find a command name but the
          command line is non-empty, assume the other words are all assignment
          statements and flag that point is in a command position so we can
          do command name completion
        - attempt_shell_completion: if the word being completed is the first
          word following a series of assignment statements, and the
          command line is non-empty, flag that point is in a command position
          so we can do command name completion

lib/readline/history.c
        - history_get_time: atol -> strtol

                                   12/18
                                   -----
parse.y
        - parser_in_command_position: external interface to the
          command_token_position macro for use by other parts of the shell,
          like the completion mechanism

externs.h
        - extern declaration for parser_in_command_position

                                   12/19
                                   -----

builtins/read.def
        - read_builtin: make sure all calls to bind_read_variable are passed
          a non-null string.  Fixes bug reported by Dan Douglas
          <ormaaj@gmail.com>

bashline.c
        - attempt_shell_completion: mark that we're in a command position if
          we're at the start of the line and the parser is ready to accept
          a reserved word or command name.  Feature most recently suggested
          by Peng Yu <pengyu.ut@gmail.com>

                                   12/21
                                   -----
lib/readline/bind.c
        - _rl_escchar: return the character that would be backslash-escaped
          to denote the control character passed as an argument ('\n' -> 'n')
        - _rl_isescape: return 1 if character passed is one that has a
          backslash escape
        - _rl_untranslate_macro_value: new second argument: use_escapes, if
          non-zero translate to backslash escapes where possible instead of
          using straight \C-x for control character `x'.  Change callers
        - _rl_untranslate_macro_value: now global

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

lib/readline/{macro.c,readline.h}
        - rl_print_last_kbd_macro: new bindable function, inspired by patch
          from Mitchel Humpherys

lib/readline/funmap.c
        - print-last-kbd-macro: new bindable command, bound to
          rl_print_last_kbd_macro

lib/readline/doc/{rluser.texi,readline.3},doc/bash.1
        - print-last-kbd-macro: document.

lib/readline/text.c
        - _rl_insert_next: if we're defining a macro, make sure the key gets
          added to the macro text (should really audit calls to rl_read_key()
          and make sure the right thing is happening for all of them)

bashline.[ch]
        - print_unix_command_map: new function, prints all bound commands in
          cmd_xmap using rl_macro_dumper in a reusable format

builtins/bind.def
        - new -X option: print all keysequences bound to Unix commands using
          print_unix_command_map.  Feature suggested by Dennis Williamson
          (2/2011)

doc/{bash.1,bashref.texi}
        - document new `bind -X' option

                                   12/24
                                   -----

doc/{bash.1,bashref.texi}
        - add a couple of sentences to the description of the case modification
          operators making it clearer that each character of parameter is
          tested against the pattern, and that the pattern should only attempt
          to match a single character.  Suggested by Bill Gradwohl
          <bill@ycc.com>

                                   12/28
                                   -----
shell.c
        - init_noninteractive: instead of calling set_job_control(0) to
          unconditionally turn off job control, turn on job control if
          forced_interactive or jobs_m_flag is set
        - shell_initialize: call initialize_job_control with jobs_m_flag as
          argument so `bash -m script' enables job control while running the
          script

jobs.c
        - initialize_job_control: if the `force' argument is non-zero, turn on
          job control even if the shell is not currently interactive
          (interactive == 0)

                                   12/29
                                   -----

flags.h
        - new extern declaration for jobs_m_flag

builtins/{cd,set}.def,doc/{bash.1,bashref.texi}
        - added text clarifying the descriptions of cd -L and -P, suggested by
          Padraig Brady <p@draigbrady.com>
        - slight change to the description of `set -P' about resolving symbolic
          links

lib/readline/doc/rluser.texi
        - Added an example to the programmable completion section: _comp_cd,
          a completion function for cd, with additional verbiage.  Text
          includes a reference to the bash_completion project

                                 1/1/2012
                                 --------
jobs.c
        - set_job_status_and_cleanup: note that a job is stopped due to
          SIGTSTP (any_tstped) if job_control is set; there's no need to
          test interactive

                                    1/5
                                    ---
quit.h
        - LASTSIG(): new macro, expands to signal number of last terminating
          signal received (terminating_signal or SIGINT)

trap.c
        - first_pending_trap: returns lowest signal number with a trap pending
        - trapped_signal_received: set to the last trapped signal the shell
          received in trap_handler(); reset to 0 in run_pending_traps

builtins/read.def
        - read_builtin: changes to posix-mode (posixly_correct != 0) to make
          `read' interruptible by a trapped signal.  After the trap runs,
          read returns 128+sig and does not assign the partially-read line
          to the named variable(s).  From an austin-group discussion started
          by David Korn

                                   1/11
                                   ----
doc/{bash.1,bashref.texi}
        - slight changes to the descriptions of the compat32 and compat40 shell
          options to clarify their meaning

                                   1/12
                                   ----
lib/readline/{colors.[ch],parse-colors.[ch]}
        - new files, part of color infrastructure support

Makefile.in,lib/readline/Makefile.in
        - arrange to have colors.o and parse-colors.o added to readline
          library

{configure,config.h}.in
        - check for stdbool.h, define HAVE_STDBOOL_H if found

                                   1/14
                                   ----
lib/readline/bind.c
        - colored_stats: new bindable variable, enables using colors to
          indicate file type when listing completions

lib/readline/complete.c
        - _rl_colored_stats: new variable, controlled by colored-stats bindable
          variable
        - colored_stat_start, colored_stat_end: new functions to set and reset
          the terminal color appropriately depending on the type of the
          filename to be printed
        - print_filename: changes to print colors if `colored-stats' variable
          set.  Changes contributed by Raphael Droz
          <raphael.droz+floss@gmail.com>

lib/readline/readline.c
        - rl_initialize_everything: add call to _rl_parse_colors to parse
          color values out of $LS_COLORS.  May have to add to rl_initialize
          to make more dynamic if LS_COLORS changes (which doesn't happen
          very often, if at all)

lib/readline/rlprivate.h
        - _rl_colored_stats: new extern declaration

lib/readline/doc/{readline.3,rluser.texi},doc/bash.1
        - colored-stats: document new bindable readline variable

lib/readline/colors.c
        - _rl_print_color_indicator: call rl_filename_stat_hook before calling
          lstat/stat so we can get color indicators for stuff like
          $HOME/Applications

lib/readline/complete.c
        - stat_char: call rl_filename_stat_hook before calling lstat/stat

findcmd.[ch],execute_cmd.c
        - search_for_command: now takes a second `flags' argument; changed
          header function prototype and callers
        - search_for_command: if (flags & 1), put the command found in $PATH
          into the command hash table (previous default behavior)

execute_cmd.c
        - is_dirname: call search_for_command with flags argument of 0 so it
          doesn't try to put something in the command hash table

bashline.c
        - bash_command_name_stat_hook: a hook function for readline's
          filename_stat_hook that does $PATH searching the same way that
          execute_cmd.c:execute_disk_command() does it, and rewrites the
          passed filename if found.  Does not put names into command hash
          table.  This allows command name completion to take advantage
          of `visible-stats' and `colored-stats' settings.
        - executable_completion: new function, calls the directory completion
          hook to expand the filename before calling executable_file or
          executable_or_directory; change command_word_completion_function to
          call executable_completion.  This allows $HOME/bin/[TAB] to do
          command completion and display alternatives

                                   1/17
                                   ----
pcomplete.c
        - gen_command_matches: now takes a new second argument: the command
          name as deciphered by the programmable completion code and used
          to look up the compspec; changed callers (gen_compspec_completions)
        - gen_shell_function_matches: now takes a new second argument: the
          command that originally caused the completion function to be
          invoked; changed callers (gen_compspec_completions))
        - build_arg_list: now takes a new second argument: the command name
          corresponding to the current compspec; changed callers
          (gen_command_matches, gen_shell_function_matches)
        - build_arg_list: now uses `cmd' argument to create $1 passed to
          invoked command or shell function
        - gen_compspec_completions: if we skipped a null command at the
          beginning of the line (e.g., for completing `>'), add a new word for
          it at the beginning of the word list and increment nw and cw
          appropriately.  This is all a partial fix for the shortcoming
          pointed out by Sung Pae <sungpae@gmail.com>

                                   1/18
                                   ----

{configure,config.h}.in
        - new check: check for AUDIT_USER_TTY defined in <linux/audit.h>,
          define HAVE_DECL_AUDIT_USER_TTY if both are found

lib/readline/rlconf.h
        - ENABLE_TTY_AUDIT_SUPPORT: new define, allows use of the Linux kernel
          tty auditing system if it's available and enabled

lib/readline/util.c
        - _rl_audit_tty: new function, send a string to the kernel tty audit
          system

lib/readline/rlprivate.h
        - _rl_audit_tty: new extern declaration

lib/readline/readline.c
        - readline: call _rl_audit_tty with line to be returned before returning
          it if the Linux tty audit system is available and it's been enabled
          in rlconf.h  Original patch from Miroslav Trmac; recent request
          from Miroslav Lichvar <mlichvar@redhat.com>

                                   1/21
                                   ----

lib/readline/readline.c:
        - _rl_dispatch_subseq: add an inter-character timeout for multi-char
          key sequences.  Suggested by <rogerx.oss@gmail.com>.  Still needs
          work to make a user-settable variable

parse.y
        - shell_getc: make code that uses the pop_alias dependent on ALIAS
          define

variables.h
        - sv_tz: extern define should only depend on HAVE_TZSET

expr.c
        - expr_streval: if ARRAY_VARS is not defined, set lvalue->ind to -1;
          move assignment to `ind' inside define
        - expr_bind_array_element: declaration and uses need to be #ifdef
          ARRAY_VARS

arrayfunc.h
        - AV_ALLOWALL, AV_QUOTED, AV_USEIND: define to 0 if ARRAY_VARS not
          defined; used in subst.c unconditionally

sig.h
        - make the signal blocking functions not dependent on JOB_CONTROL

sig.c
        - sigprocmask: make the replacement definition not dependent on
          JOB_CONTROL

trap.c
        - use BLOCK_SIGNAL/UNBLOCK_SIGNAL instead of code dependent on
          HAVE_POSIX_SIGNALS and BSD signals

                                   1/24
                                   ----

print_cmd.c
        - print_redirection_list: change the conditions under which
          r_duplicating_output_word is mapped to r_err_and_out to more or
          less match those used in redir.c.  Fixes bug pointed out by
          Dan Douglas <ormaaj@gmail.com>


                                   1/29
                                   ----
lib/readline/signals.c
        - _rl_block_sigwinch,_rl_release_sigwinch: don't compile in bodies
          unless SIGWINCH is defined.  Fixes bug reported by Pierre Muller
          <pierre.muller@ics-cnrs.unistra.fr>

doc/{bash.1,bashref.texi}
        - small modifications to the introduction to the REDIRECTION section
          to describe how redirections can modify file handles
        - small modification to the section describing base#n to make it
          clearer that n can be denoted using non-numerics.  From a posting
          by Linda Walsh <bash@tlinx.org>

                                    2/2
                                    ---
builtins/printf.def
        - printf_builtin: make sure vbuf is intialized and non-null when -v
          is supplied, since other parts of the code assume that it's not
          null (e.g., bind_printf_variable()).  Fixes bug reported by Jim
          Avera <james_avera@yahoo.com>

                                    2/4
                                    ---
lib/readline/undo.c
        - _rl_free_undo_list: new function, old body of rl_free_undo_list,
          frees undo entries in UNDO_LIST * passed as argument
        - rl_free_undo_list: call _rl_free_undo_list

lib/readline/rlprivate.h
        - _rl_free_undo_list: new extern declaration
        - _rl_keyseq_timeout: new extern declaration (see below)

lib/readline/misc.c
        - rl_clear_history: new function.  Clears the history list and frees
          all associated data similar to history.c:clear_history(), but
          takes rl_undo_list into account and frees and UNDO_LISTs saved as
          `data' members of a history list entry

lib/readline/doc/rltech.texi
        - rl_clear_history: documented

lib/readline/readline.c
        - _rl_keyseq_timeout: new variable to hold intra-key timeout value
          from 1/21 fix; specified in milliseconds.  Default value is 500
        - _rl_dispatch_subseq: change to use _rl_keyseq_timeout as intra-key
          timeout if it's greater than 0; no timeout if <= 0
        - _rl_dispatch_subseq: don't check for queued keyboard input if we have
          pushed or pending input, or if we're reading input from a macro

lib/readline/bind.c
        - keyseq-timeout: new bindable variable, shadows _rl_keyseq_timeout
        - string_varlist: add keyseq-timeout
        - sv_seqtimeout: new function to modify value of _rl_keyseq_timeout;
          clamps negative values at 0 for now
        - _rl_get_string_variable_value: return value for keyseq-timeout

doc/bash.1,lib/readline/doc/{rluser.texi,readline.3}
        - keyseq-timeout: documented

lib/readline/isearch.c
        - _rl_isearch_dispatch: modification to fix from 7/18 to not use
          cxt->keymap and cxt->okeymap, since by the time this code is
          executed, they are equal.  Use `f' to check for rl_insert or
          unbound func
        - _rl_isearch_dispatch: if we're switching keymaps, not in
          callback mode, and don't have pending or pushed input, use
          _rl_input_queued to resolve a potentially ambiguous key sequence.
          Suggested by Roger Zauner <rogerx.oss@gmail.com>
        - _rl_isearch_dispatch: if we have changed keymaps and resolved to
          an editing function (not self-insert), make sure we stuff the
          right characters back onto the input after changing the keymap
          back so the right editing function is executed after the search
          is terminated.  Rest of fix for bug reported by Roger Zauner
          <rogerx.oss@gmail.com>

                                    2/5
                                    ---
builtins/gen-helpfiles.c
        - new file: reads struct builtin and writes the long docs to files
          in the `helpdirs' subdirectory.  The filename is given in the
          previously-unused `handle' member of the struct builtin.  Links
          with `tmpbuiltins.o', which is created by Makefile to have the
          right long documentation.  When not cross-compiling, gets the
          right #defines based on configuration options from config.h instead
          of trying to parse conditional parts of def files.  Fixes
          shortcoming pointed out by Andreas Schwab <schwab@linux-m68k.org>

builtins/Makefile.in
        - tmpbuiltins.c: new generated file, created to enable creation of
          separate helpfiles based on correct #defines instead of trying to
          parse conditional parts of def files
        - gen-helpfiles: new program to generate helpfiles, links with
          tmpbuiltins.o
        - HELPFILES_TARGET: new target, substituted by configure to `helpdoc'
          if separate helpfiles requested
        - targets: new target, libbuiltins.a and $(HELPFILES_TARGET)
        - CREATED_OBJECTS: new variable, holds created object files for
          make clean; changed make clean to remove created objects
        - helpdoc: changed to call gen-helpfiles instead of mkbuiltins

Makefile.in
        - when building libbuiltins.a, recursively call make with `targets'
          argument to make sure separate helpfiles get built

configure.in
        - substitute `helpdoc' as value of HELPFILES_TARGET if
          --enable-separate-helpfiles supplied as configure argument

builtins/mkbuiltins.c
        - `-nofunctions': new argument, causes mkbuiltins to not write value
          for function implementing a particular builtin to struct builtin
          and to write document file name to `handle' member of struct builtin
        - no longer writes separate helpfiles; that is left to gen-helpfiles

                                    2/8
                                    ---
subst.c
        - make sure last_command_exit_value is set to a non-zero value before
          any calls to report_error, since `-e' set will short-circuit
          report_error.  Fixes bug reported by Ewan Mellor
          <Ewan.Mellor@eu.citrix.com>

variables.c
        - make_local_array_variable: added second argument; if non-zero,
          function will return an existing local associative array variable
          instead of insisting on an indexed array

variable.h,subst.c
        - make_local_array_variable: changed prototype and caller

builtins/declare.def
        - declare_internal: add second arg to call to make_local_array_variable;
          making_array_special, which indicates we're processing an
          assignment like declare a[b]=c.  Fixes seg fault resulting from
          a being an already-declared local associative array variable in a
          function.  Ubuntu bash bug 928900.

                                   2/14
                                   ----

execute_cmd.c
        - execute_command_internal: if redirections into or out of a loop fail,
          don't try to free ofifo_list unless saved_fifo is non-zero.  It's
          only valid if saved_fifo is set

                                   2/15
                                   ----
{arrayfunc,braces,variables}.c
        - last_command_exit_value: make sure it's set before any calls to
          report_error, since -e will cause that to exit the shell

builtins/common.c
        - get_job_by_name: call internal_error instead of report_error so this
          doesn't exit the shell

                                   2/18
                                   ----
builtins/evalstring.c
        - parse_and_execute: make sure the file descriptor to be redirected to
          is 1 before calling cat_file.  One fix for bug reported by Dan Douglas
          <ormaaj@gmail.com>

parse.y
        - read_token_word: don't return NUMBER if a string of all digits
          resolves to a number that overflows the bounds of an intmax_t.
          Other fix for bug reported by Dan Douglas <ormaaj@gmail.com>

                                   2/19
                                   ----
lib/sh/strtrans.c
        - ansicstr: use 0x7f as the boundary for characters that translate
          directly from ASCII to unicode (\u and \U escapes) instead of
          UCHAR_MAX, since everything >= 0x80 requires more than one byte.
          Bug and fix from John Kearney <dethrophes@web.de>

builtins/printf.def
        - tescape: ditto for printf \u and \U escape sequences

                                   2/20
                                   ----
lib/sh/unicode.c
        - u32toutf8: fix to handle encodings up to six bytes long correctly
          (though technically UTF-8 only has characters up to 4 bytes long).
          Report and fix from John Kearney <dethrophes@web.de>
        - u32toutf8: first argument is now an unsigned 32-bit quantity,
          changed callers (u32cconv) to pass c instead of wc
        - u32reset: new function, resets local static state to uninitialized
          (locale information, currently)

locale.c
        - call u32reset whenever LC_CTYPE/LC_ALL/LANG is changed to reset the
          cached locale information used by u32cconv.  From a report from
          John Kearney <dethrophes@web.de>

                                   2/21
                                   ----
doc/{bash,builtins}.1
        - minor changes from Bjarni Ingi Gislason <bjarniig@rhi.hi.is>

lib/sh/unicode.c
        - u32cconv: only assume you can directly call wctomb on the passed
          value if __STDC_ISO_10646__ is defined and the value is <=
          0x7fffffff
        - stub_charset: return locale as default instead of "ASCII", let
          rest of code decide what to do with it

lib/readline/parens.c
        - _rl_enable_paren_matching: make paren matching work in vi insert
          mode.  Bug report from <derflob@derflob.de>

                                   2/22
                                   ----
lib/sh/shquote.c
        - sh_backslash_quote: quote tilde in places where it would be
          expanded.  From a report from John Kearney <dethrophes@web.de>

                                   2/23
                                   ----
execute_cmd.c
        - execute_pipeline: wrap the discard_unwind_frame call in #ifdef
          JOB_CONTROL, since the frame is only created if JOB_CONTROL is
          defined.  Bug and fix from Doug Kehn <rdkehn@yahoo.com>

                                   2/25
                                   ----
error.c
        - report_error: make sure last_command_exit_value is non-zero before
          we call exit_shell, since the exit trap may reference it.  Call
          exit_shell with last_command_exit_value to allow exit statuses
          other than 1

unicode.c
        - stub_charset: use local static buffer to hold charset, don't change
          value returned by get_locale_var.  Based on idea and code from
          John Kearney <dethrophes@web.de>
        - u32toutf16: function to convert unsigned 32-bit value (unicode) to
          UTF-16.  From John Kearney <dethrophes@web.de>
        - u32cconv: call u32toutf16 if __STDC_ISO_10646__ defined and wchar_t
          is two bytes, send result to wcstombs, return if not encoding error.
          From John Kearney <dethrophes@web.de>
        - u32cconv: return UTF-8 conversion if iconv conversion to local
          charset is unsupported

                                    3/2
                                    ---
lib/readline/complete.c
        - print_filename: if there is no directory hook, but there is a stat
          hook, and we want to append a slash to directories, call the stat
          hook before calling path_isdir on the expanded directory name.
          Report and pointer to fix from Steve Rago <sar@nec-labs.com>

                                    3/3
                                    ---
builtins/evalstring.c
        - parse_and_execute: fix to change of 2/18: make sure the file
          descriptor being redirected to is 0 before calling cat_file when
          we see something like $(< file).  Real fix for bug reported by
          Dan Douglas <ormaaj@gmail.com>

subst.c
        - parameter_brace_patsub: run the replacement string through quote
          removal even if the expansion is within double quotes, because
          the parser and string extract functions treat the quotes and
          backslashes as special.  If they're treated as special, quote
          removal should remove them (this is the Posix position and
          compatible with ksh93).  THIS IS NOT BACKWARDS COMPATIBLE.

                                    3/4
                                    ---
lib/readline/complete.c
        - rl_menu_complete: fix to make show-all-if-ambiguous and
          menu-complete-display-prefix work together if both are set.  Fix
          from Sami Pietila <sami.pietila@gmail.com>

                                    3/5
                                    ---
bashline.c
        - dircomplete_expand_relpath: new variable, if non-zero, means that
          `shopt -s direxpand' should expand relative pathnames.  Zero by
          default, not user-settable yet
        - bash_directory_completion_hook: if we have a relative pathname that
          isn't changed by canonicalization or spell checking after being
          appended to $PWD, then don't change what the user typed.  Controlled
          by dircomplete_expand_relpath

                                    3/7
                                    ---
m4/timespec.m4
        - new macros, cribbed from gnulib and coreutils: find out whether we
          have `struct timespec' and what file includes it

m4/stat-time.m4
        - new macros, cribbed from gnulib and coreutils: find out whether the
          mtime/atime/ctime/etctime fields of struct stat are of type
          struct timespec, and what the name is

include/stat-time.h
        - new file, cribbed from gnulib, with additions from coreutils: include
          the right file to get the struct timespec define, or provide our own
          replacement.  Provides a bunch of inline functions to turn the
          appropriate members of struct stat into `struct timespec' values,
          zeroing out the tv_nsec field if necessary

test.c
        - include "stat-time.h" for the nanosecond timestamp resolution stuff
        - stat_mtime: new function, returns struct stat and the mod time
          normalized into a `struct timespec' for the filename passed as the
          first argument
        - filecomp: call stat_mtime instead of sh_stat for each filename
          argument to get the mtime as a struct timespec
        - filecomp: call timespec_cmp instead of using a straight arithmetic
          comparison for the -nt and -ot operators, using timespec returned by
          stat_mtime.  Added functionality requested by by Werner Fink
          <werner@suse.de> for systems that can support it

                                   3/10
                                   ----
include/posixdir.h
        - REAL_DIR_ENTRY: remove dependency on _POSIX_SOURCE, only use feature
          test macros to decide whether dirent.d_ino is present and usable;
          define D_INO_AVAILABLE.  Report and fix from Fabrizion Gennari
          <fabrizio.ge@tiscali.it>
        - D_FILENO_AVAILABLE: define if we can use dirent.d_fileno

lib/sh/getcwd.c
        - use D_FILENO_AVAILABLE to decide whether or not to compile in
          _path_checkino and whether or not to call it.  Report and initial
          fix from Fabrizion Gennari <fabrizio.ge@tiscali.it>

lib/readline/signals.c
        - make sure all occurrences of SIGWINCH are protected by #ifdef

sig.c
        - make sure all occurrences of SIGCHLD are protected by #ifdef

nojobs.c
        - make sure SA_RESTART is defined to 0 if the OS doesn't define it

version.c
        - show_shell_version: don't use string literals in printf, use %s.
          Has added benefit of removing newline from string to be translated

trap.c
        - queue_sigchld_trap: new function, increments the number of pending
          SIGCHLD signals by the argument, which is by convention the number
          of children reaped in a call to waitchld()

trap.h
        - queue_sigchld_trap: new extern declaration

jobs.c
        - waitchld: if called from the SIGCHLD signal handler (sigchld > 0),
          then call queue_sigchld_trap to avoid running the trap in a signal
          handler context.  Report and original fix from Siddhesh Poyarekar
          <siddhesh@redhat.com>

lib/sh/unicode.c
        - u32tocesc: take an unsigned 32-bit quantity and encode it using
          ISO C99 string notation (\u/\U)
        - u32cconv: call u32tocesc as a fallback instead of u32cchar
        - u32cconv: call u32tocesc if iconv cannot convert the character.
          Maybe do the same thing if iconv_open fails
        - u32reset: call iconv_close on localconv if u32init == 1

                                   3/11
                                   ----
config-top.h
        - CHECKWINSIZE_DEFAULT: new define, set to initial value of
          check_window_size (shopt checkwinsize): 0 for off, 1 for on.
          Default is 0

{jobs,nojobs}.c
        - check_window_size: default initial value to CHECKWINSIZE_DEFAULT

                                   3/13
                                   ----
doc/bashref.texi
        - change text referring to the copying restrictions to that
          recommended by the FSF (no Front-Cover Texts and no Back-Cover
          Texts)

lib/readline/doc/{history,rlman,rluserman}.texi
        - change text referring to the copying restrictions to that
          recommended by the FSF (no Front-Cover Texts and no Back-Cover
          Texts)

                                   3/15
                                   ----
array.c
        - LASTREF_START: new macro to set the starting position for an array
          traversal to `lastref' if that's valid, and to the start of the array
          if not.  Used in array_reference, array_insert, array_remove
        - array_remove: try to be a little smarter with lastref instead of
          unconditionally invalidating it

                                   3/16
                                   ----
array.c
        - array_insert: fix memory leak by deleting element to be added in the
          case of an error

                                   3/18
                                   ----
lib/sh/mbschr.c
        - mbschr: don't call mbrlen unless is_basic is false; devolves to a
          straight character-by-character run through the string

                                   3/19
                                   ----
stringlib.c
        - substring: use memcpy instead of strncpy, since we know the length
          and are going to add our own NUL terminator

                                   3/20
                                   ----
subst.c
        - parameter_brace_expand_rhs: if expand_string_for_rhs returns a quoted
          null string (a list with one element for which
          QUOTED_NULL(list->word->word) returns true), return the quoted null
          and set the flags in the returned word to indicate it.  Fixes bug
          reported by Mark Edgar <medgar123@gmail.com>

lib/sh/tmpfile.c
        - use random(3) instead of get_random_number to avoid perturbing the
          random sequence you get using $RANDOM.  Bug report and fix from
          Jurij Mihelic <jurij.mihelic@fri.uni-lj.si>

                                   3/21
                                   ----
config-top.h
        - OPTIMIZE_SEQUENTIAL_ARRAY_ASSIGNMENT: define to 1 to optimize
          sequential indexed array assignment patterns.  Defined to 1 by
          default

array.c
        - array_insert: if OPTIMIZE_SEQUENTIAL_ARRAY_ASSIGNMENT is defined,
          start the search at lastref (see change from 3/15)

                                   3/27
                                   ----
print_cmd.c
        - debug_print_word_list: new debugging function, prints a word list
          preceded by an optional string and using a caller-specified
          separator

                                    4/1
                                    ---
command.h
        - W_ASSNGLOBAL: new flag, set to indicate declare -g

execute_cmd.c
        - fix_assignment_words: note that we have a -g argument to an assignment
          builtin and set the W_ASSNGLOBAL flag in the variable word

subst.c
        - dump_word_flags: print out W_ASSNGLOBAL if present
        - do_assignment_internal: only set ASS_MKLOCAL if W_ASSIGNARG is set
          and W_ASSNGLOBAL is not.  Don't want to create a local variable even
          if variable_context is non-zero if ASSNGLOBAL is set.  Fixes bug
          reported by Bill Gradwohl <bill@ycc.com>

                                    4/7
                                    ---
lib/readline/readline.c
        - _rl_dispatch_subseq: make the `keyseq-timeout' variable apply to
          ESC processing when in vi mode.  After hitting ESC, readline will
          wait up to _rl_keyseq_timeout*1000 microseconds (if set) for
          additional input before dispatching on the ESC and switching to
          command/movement mode.  Completes timeout work suggested by
          <rogerx.oss@gmail.com>; this prompted by report from Barry Downes
          <barry.downes@gmail.com>

lib/sh/shmbchar.c
        - sh_mbsnlen: new function, returns the number of (possibly multibyte)
          characters in a passed string with a passed length, examining at most
          maxlen (third argument) bytes

externs.h
        - sh_mbsnlen: extern declaration for new function

shell.c
        - exit_shell: call maybe_save_shell_history if remember_on_history is
          set, not just in interactive shells.  That means the history is
          saved if history is enabled, regardless of whether or not the shell
          is interactive

doc/{bash.1,bashref.texi}
        - TMOUT: fix description to make it explicit that TMOUT is the timeout
          period for a complete line of input, not just any input.  Fixes
          problem reported in Ubuntu bug 957303:
          https://bugs.launchpad.net/ubuntu/+source/bash/+bug/957303
        - HISTFILE: document change to write history list to history file in
          any shell with history enabled, not just interactive shells.  This
          seems to be more logical behavior.  Suggested by Greg Wooledge
          <wooledg@eeg.ccf.org>

                                   4/12
                                   ----
lib/readline/colors.h
        - only include stdbool.h if HAVE_STDBOOL_H is defined
        - if HAVE_STDBOOL_H is not defined, provide enough definition for the
          library to use `bool', `true', and `false'

lib/readline/parse-colors.[ch]
        - don't try to include <stdbool.h> at all; rely on colors.h to do it

lib/sh/snprintf.c
        - vsnprintf_internal: only treat '0' as a flag to indicate zero padding
          if `.' hasn't been encountered ((flags&PF_DOT) == 0); otherwise treat
          it as the first digit of a precision specifier.  Fixes bug reported
          by Petr Sumbera <petr.sumbera@sun.com>

                                   4/15
                                   ----
lib/sh/snprintf.c
        - vsnprintf_internal: if the '0' and '-' flags both occur, the '0'
          flag is ignored -- Posix.  Start of a series of fixes based on
          tests and patches from Petr Sumbera <petr.sumbera@sun.com>
        - PUT_PLUS: make sure PF_PLUS flag is specified before putting the `+'
        - vsnprintf_internal: when '+' is read as a flag, don't set right-
          justify flag if the LADJUST (`-') flag has already been supplied
        - floating: make sure to output space padding before the `+', zero
          padding after
        - exponent: make sure to output space padding before the `+', zero
          padding after
        - exponent: only subtract one from the width for the decimal point
          if we're really going to print one
        - floating: use presence of PF_PLUS flag to decide whether to account
          for the `+' in the padded field width.  Ditto for exponent()

                                   4/16
                                   ----
lib/sh/snprintf.c
        - vsnprint_internal: only reduce precision by 1 when processing the `g'
          format if it's > 0.  A precision of 0 should stay 0; otherwise it
          gets set to -1 (NOT_FOUND) and converted to the default
        - number, lnumber: if an explicit precision is supplied, turn off the
          zero-padding flag and set the pad character back to space
        - number, lnumber: only account for a `+' when performing the field
          width calculation if the coversion is base 10; we don't add a `+'
          for other bases

                                   4/18
                                   ----
tests/printf3.sub
        - try using "perl -e 'print time'" to get the current time in seconds
          since the epoch if "date +%s" is not available (solaris 8-10)

                                   4/19
                                   ----
tests/run-printf
        - use cat -v instead of relying on diff -a being available to convert
          control characters to ascii and avoid the dreaded "Binary files
          /tmp/xx and printf.right differ"

                                   4/20
                                   ----
lib/sh/strftime.c
        - incoporated new version from Aharon Robbins <arnold@skeeve.com>

                                   4/22
                                   ----
doc/{bash.1,bashref.texi}
        - slight change to the description of /dev/tcp and /dev/udp

subst.c
        - match_wpattern: logic fix to the calculation of `simple' (was |=,
          needs to be &=).  Bug report from Mike Frysinger <vapier@gentoo.org>,
          fix from Andreas Schwab <schwab@linux-m68k.org>

bashline.c
        - bash_filename_stat_hook: add code from bash_directory_completion_hook
          that performs pathname canonicalization in the same way that cd and
          other builtins will do

                                   4/25
                                   ----
execute_cmd.c
        - execute_pipeline: change the call to move_to_high_fd to make it use
          getdtablesize() and to not stomp on existing open file descriptors,
          like the fd the shell is using to read a script.  Bug report from
          Greg Wooledge <wooledg@eeg.ccf.org>

                                    5/6
                                    ---
subst.c
        - expand_word_internal: case '$': after calling param_expand and
          setting had_quoted_null, set TEMP to null.  The code that builds the
          returned string at the end of the function will take care of making
          and returning a quoted null string if there's nothing else in
          ISTRING.  If there is, the quoted null should just go away.  Part of
          fix for bug reported by Ruediger Kuhlmann <RKuhlmann@orga-systems.com>
        - expand_word_internal: when processing ISTRING to build return value,
          only set W_HASQUOTEDNULL in the returned word flags if the word is
          a quoted null string AND had_quoted_null is set.  Rest of fix

                                    5/9
                                    ---
variables.c
        - bind_variable_internal: if we get an array variable here (implicit
          assignment to index 0), call make_array_variable_value, which
          dummies up a fake SHELL_VAR * from array[0].  This matters when
          we're appending and have to use the current value
        - bind_variable_internal: after computing the new value, treat assoc
          variables with higher precedence than simple array variables; it
          might be that a variable has both attributes set

arrayfunc.c
        - bind_array_var_internal: break code out that handles creating the
          new value to be assigned to an array variable index into a new
          function, make_array_variable_value.  This handles creating a
          dummy SHELL_VAR * for implicit array[0] assignment.  Fixes bug
          reported by Dan Douglas <ormaaj@gmail.com>

arrayfunc.h
        - make_array_variable_value: new extern declaration

                                   5/19
                                   ----
variables.c
        - bind_int_variable: if an assignment statement like x=y comes in
          from the expression evaluator, and x is an array, handle it like
          x[0]=y.  Fixes bug reported by Dan Douglas <ormaaj@gmail.com>

                                   5/24
                                   ----

braces.c
        - mkseq: handle possible overflow and break the sequence generating
          loop if it occurs.  Fixes OpenSUSE bug 763591:
          https://bugzilla.novell.com/show_bug.cgi?id=763591

                                   5/25
                                   ----
Makefile.in
        - LDFLAGS_FOR_BUILD: add to compilation recipes for build tools
          buildversion, mksignames, mksyntax
        - LDFLAGS_FOR_BUILD: add to compilation recipes for test tools
          recho, zecho, printenv, xcase

builtins/Makefile.in
        - LDFLAGS_FOR_BUILD: add to compilation recipes for build tools
          gen-helpfiles, psize.aux

variables.c
        - bind_int_variable: if LHS is a simple variable name without an array
          reference, but resolves to an array variable, call
          bind_array_variable with index 0 to make x=1 equivalent to x[0]=1.
          Fixes bug reported by Dan Douglas <ormaaj@gmail.com>

                                   5/27
                                   ----
subst.c
        - expand_word_internal: make sure has_dollar_at doesn't get reset before
          recursive calls to param_expand or expand_word_internal, since it has
          to save state of what came before.  Use temp variable and make sure
          has_dollar_at is incremented if recursive call processes "$@".
          Fixes bug reported by gregrwm <backuppc-users@whitleymott.net> and
          supplemented by Dan Douglas <ormaaj@gmail.com>

doc/{bash.1,bashref.texi}
        - changes to the description of substring expansion inspired by
          suggestions from Bill Gradwohl <bill@ycc.com>

doc/bashref.texi
        - added substring expansion examples inspired by suggestions from
          Bill Gradwohl <bill@ycc.com>

variables.c
        - find_shell_variable: search for a variable in the list of shell
          contexts, ignore the temporary environment
        - find_variable_tempenv: search for a variable in the list of shell
          contexts, force search of the temporary environment
        - find_variable_notempenv: search for a variable in the list of shell
          contexts, don't force search of the temporary environment

variables.h
        - find_shell_variable: extern declaration
        - find_variable_tempenv: extern declaration
        - find_variable_notempenv: extern declaration

arrayfunc.c
        - bind_array_variable: call find_shell_variable instead of calling
          var_lookup directly

findcmd.c
        - search_for_command: call find_variable_tempenv instead of
          find_variable_internal directly
        - _find_user_command_internal: call find_variable_tempenv instead of
          find_variable_internal directly

builtins/setattr.def
        - set_var_attribute: call find_variable_notempenv instead of
          find_variable_internal directly
        - show_name_attributes:  call find_variable_tempenv instead of
          find_variable_internal directly

                                    6/1
                                    ---
sig.c
        - termsig_handler: don't try to save the shell history on a terminating
          signal any more, since it just causes too many problems on Linux
          systems using glibc and glibc malloc

lib/readline/vi_mode.c
        - rl_vi_change_to: change to correctly redo `cc', since `c' is not a vi
          motion character.  From Red Hat bug 813289
        - rl_vi_delete_to: change to correctly redo `dd', since `d' is not a vi
          motion character
        - rl_vi_yank_to: change to correctly redo `yy', since `y' is not a vi
          motion character

                                    6/4
                                    ---
lib/sh/mktime.c
        - current versions of VMS do not need to include <stddef.h>.  Fix from
          John E. Malmberg <wb8tyw@qsl.net>

                                    6/5
                                    ---
lib/sh/eaccess.c
        - sh_stat: instead of using a static buffer to do the DEV_FD_PREFIX
          translation, use a dynamically-allocated buffer that we keep
          resizing.  Fixes potential security hole reported by David Leverton
          <levertond@googlemail.com>

                                    6/5
                                    ---
braces.c
        - expand_seqterm: check errno == ERANGE after calling strtoimax for
          rhs and incr.  Part of a set of fixes from Scott McMillan
          <scotty.mcmillan@gmail.com>
        - expand_seqterm: incr now of type `intmax_t', which changes
          arguments to mkseq
        - mkseq: a better fix for detecting overflow and underflow since it's
          undefined in C and compilers `optimize' out overflow checks.  Uses
          ADDOVERFLOW and SUBOVERFLOW macros
        - mkseq: use sh_imaxabs (new macro) instead of abs() for intmax_t
          variables
        - mkseq: don't allow incr to be converted to -INTMAX_MIN
        - mkseq: make sure that strvec_create isn't called with a size argument
          greater than INT_MAX, since it only takes an int

                                    6/6
                                    ---
braces.c
        - mkseq: try and be smarter about not overallocating elements in
          the return array if the increment is not 1 or -1

                                    6/7
                                    ---
parse.y
        - history_delimiting_chars: if the parser says we're in the middle of
          a compound assignment (PST_COMPASSIGN), just return a space to avoid
          adding a stray semicolon to the history entry.  Fixes bug reported
          by "Davide Brini" <dave_br@gmx.com>

                                    6/8
                                    ---
bashline.c
        - bash_directory_completion_hook: don't attempt spelling correction
          on the directory name unless the direxpand option is set and we are
          going to replace the directory name with the corrected one in the
          readline line.  Suggested by Linda Walsh <bash@tlinx.org>

lib/sh/shquote.c
        - sh_backslash_quote: now takes a third argument: flags.  If non-zero,
          tildes are not backslash-escaped.  Have to handle both printf %q,
          where they should be escaped, and filename completion, where they
          should not when used as usernames

externs.h
        - sh_backslash_quote: declaration now takes a third argument

builtins/printf.def
        - printf_builtin: call sh_backslash_quote with 1 as third argument
          so tildes get escaped

{bashline,bracecomp}.c
        - call sh_backslash_quote with 0 as third argument so tildes are not
          escaped in completed words

doc/bash.1
        - add `coproc' to the list of reserved words.  From a report by
          Jens Schweikhardt <schweikh@schweikhardt.net>

                                   6/10
                                   ----
execute_cmd.c
        - line_number_for_err_trap: now global, so parse_and_execute can save
          and restore it with unwind-protect

builtins/evalstring.c
        - parse_prologue: save and restore line_number_for_err_trap along
          with line_number
        - restore_lastcom: new function, unwind-protect to restore
          the_printed_command_except_trap
        - parse_prologue: use restore_lastcom to save and restore the value
          of the_printed_command_except_trap around calls to parse_and_execute
          (eval/source/.)

                                   6/15
                                   ----
lib/readline/complete.c
        - complete_fncmp: change filename comparison code to understand
          multibyte characters, even when doing case-sensitive or case-mapping
          comparisons.  Fixes problem reported by Nikolay Shirokovskiy
          <nshyrokovskiy@gmail.com>

                                   6/20
                                   ----
builtins/mapfile.def
        - mapfile: move the line count increment and check for having read
          the specified number of lines to the end of the loop to avoid
          reading an additional line with zgetline.  Fixes bug reported by
          Dan Douglas <ormaaj@gmail.com>

                                   6/21
                                   ----

execute_cmd.c
        - execute_pipeline: make sure `lastpipe_flag' is initialized to 0 on
          all systems, since it's tested later in the function.  Fixes bug
          reported by John E. Malmberg <wb8tyw@qsl.net>

                                   6/22
                                   ----
mailcheck.c
        - file_mod_date_changed: return 0 right away if mailstat() does not
          return success.  Fixes bug with using uninitialized values reported
          by szymon.kalasz@uj.edu.pl

builtins/set.def
        - the `monitor' option is not available when the shell is compiled
          without job control, since the underlying `m' flag is not available

nojobs.c
        - job_control: now declared as int variable, initialized to 0, never
          modified

jobs.h
        - job_control: extern declaration no longer dependent on JOB_CONTROL

execute_cmd.c
        - execute_pipeline: made necessary changes so `lastpipe' shell option
          is now available in all shells, even those compiled without
          JOB_CONTROL defined

                                   6/23
                                   ----
lib/glob/glob.c
        - glob_filename: check for interrupts before returning if glob_vector
          returns NULL or an error.  Bug reported by Serge van den Boom
          <svdb@stack.nl>, fix from Andreas Schwab <schwab@linux-m68k.org>
        - call run_pending_traps after each call to QUIT or test of
          interrupt_state, like we do in mainline shell code
        - glob_vector: don't call QUIT; in `if (lose)' code block; just free
          memory, return NULL, and let callers deal with interrupt_state or
          other signals and traps

                                   6/25
                                   ----
lib/readline/input.c
        - rl_read_key: restructure the loop that calls the event hook a little,
          so that the hook is called only after rl_gather_tyi returns no input,
          and any pending input is returned first.  This results in better
          efficiency for processing pending input without calling the hook
          on every input character as bash-4.1 did.  From a report from
          Max Horn <max@quendi.de>

                                   6/26
                                   ----
trap.c
        - signal_is_pending: return TRUE if SIG argument has been received and
          a trap is waiting to execute

trap.h
        - signal_is_pending: extern declaration

lib/glob/glob.c
        - glob_vector: check for pending SIGINT trap each time through the loop,
          just like we check for interrupt_state or terminating_signal, and
          set `lose = 1' so we clean up after ourselves and interrupt the
          operation before running the trap.  This may require a change later,
          maybe call run_pending_traps and do that if run_pending_traps returns?

variables.c
        - sv_histtimefmt: set history_comment_character to default (`#') if
          it's 0 when we're turning on history timestamps.  The history code
          uses the history comment character to prefix timestamps, and
          leaving it at 0 effectively removes them from the history.  From a
          report to help-bash by Dennis Williamson <dennistwilliamson@gmail.com>

                                   6/27
                                   ----
lib/readline/signals.c
        - rl_maybe_restore_sighandler: new function, sets handler for SIG to
          HANDLER->sa_handler only if it's not SIG_IGN.  Needs to be called
          on same signals set using rl_maybe_set_sighandler, which does not
          override an existing SIG_IGN handler (SIGALRM is ok since it does
          the check inline; doesn't mess with SIGWINCH)

                                   6/30
                                   ----
variables.h
        - additional defines for the new `nameref' variable attribute
          (att_nameref): nameref_p, nameref_cell, var_setref

variables.c
        - find_variable_nameref: resolve SHELL_VAR V through chain of namerefs
        - find_variable_last_nameref: resolve variable NAME until last in a
          chain of possibly more than one nameref starting at shell_variables
        - find_global_variable_last_nameref: resolve variable NAME until last
          in a chain of possibly more than one nameref starting at
          global_variables
        - find_nameref_at_context: resolve SHELL_VAR V through chain of namerefs        
          in a specific variable context (usually a local variable hash table)
        - find_variable_nameref_context: resolve SHELL_VAR V through chain of
          namerefs following a chain of varible contexts
        - find_variable_last_nameref_context: resolve SHELL_VAR V as in
          find_variable_last_context, but return the final nameref instead of
          what the final nameref resolves to
        - find_variable_tempenv, find_variable_notempenv, find_global_variable,
          find_shell_variable, find_variable: modified to follow namerefs
        - find_global_variable_noref: look up a global variable without following
          any namerefs
        - find_variable_noref: look up a shell variable without following any
          namerefs
        - bind_variable_internal: modify to follow a chain of namerefs in the
          global variables table; change to handle assignments to a nameref by
          following nameref chain
        - bind_variable: modify to follow chain of namerefs when binding to a
          local variable
        - unbind_variable: changes to unset nameref variables (unsets both
          nameref and variable it resolves to)

subst.c
        - parameter_brace_expand_word: change to handle expanding nameref whose
          value is x[n]
        - parameter_brace_expand_indir: change to expand in ksh93-compatible
          way if variable to be indirected is nameref and a simple (non-array)
          expansion
        - param_expand: change to expand $foo where foo is a nameref whose value
          is x[n]

execute_cmd.c
        - execute_for_command: changes to implement ksh93 semantics when index
          variable is a nameref

builtins/setattr.def
        - show_var_attributes: change to add `n' to flags list if att_nameref
          is set

builtins/set.def
        - unset_builtin: changes to error messages to follow nameref variables

builtins/declare.def
        - document new -n option
        - declare_internal: new `-n' and `+n' options
        - declare_internal: handle declare -n var[=value] and
          declare +n var[=value] for existing and non-existant variables.
          Enforce restriction that nameref variables cannot be arrays.
          Implement semi-peculiar ksh93 semantics for typeset +n ref=value

                                    7/5
                                    ---
variables.c
        - unbind_variable: unset whatever a nameref resolves to, leaving the
          nameref variable itself alone
        - unbind_nameref: new function, unsets a nameref variable, not the
          variable it references

variables.h
        - unbind_nameref: extern declaration

builtins/set.def
        - unset_builtin: modify to add -n option, which calls unbind_nameref
          leaving unbind_variable for the usual case.  This required slight
          changes and additions to the test suite

doc/{bash.1,bashref.texi}
        - document namerefs and typeset/declare/local/unset -n

                                   7/13
                                   ----
lib/sh/casemod.c
        - include shmbchar.h for is_basic and supporting pieces
        - sh_casemod: use _to_wupper and _to_wlower to convert wide character
          case instead of TOUPPER and TOLOWER.  Fixes bug reported by
          Dennis Williamson <dennistwilliamson@gmail.com>, fix from
          Andreas Schwab <schwab@linux-m68k.org>
        - cval: short-circuit and return ascii value if is_basic tests true
        - sh_casemod: short-circuit and use non-multibyte case modification
          and toggling code if is_basic tests true

lib/readline/signals.c
        - _rl_{block,release}_sigint: remove the code that actually blocks and
          releases the signals, since we defer signal handling until calls to
          RL_CHECK_SIGNALS()

lib/readline/{callback,readline,util}.c
        - if HAVE_POSIX_SIGSETJMP is defined, use sigsetjmp/siglongjmp without
          saving and restoring the signal mask instead of setjmp/longjmp

lib/readline/rltty.c
        - prepare_terminal_settings: don't mess with IXOFF setting if
          USE_XON_XOFF defined

doc/{bash.1,bashref.texi}
        - add some text to the description of set -e clarifying its effect
          on shell functions and shell function execution.  Suggested by
          Rainer Blome <rainer.blome@gmx.de>

bashline.c
        - edit_and_execute_command: increment current_command_line_count before
          adding partial line to command history (for command-oriented-history
          because of rl_newline at beginning of function), then reset it to 0
          before adding the dummy history entry to make sure the dummy entry
          doesn't get added to previous incomplete command.  Partial fix for
          problem reported by Peng Yu <pengyu.ut@gmail.com>

                                   7/24
                                   ----
configure.in
        - interix: define RECYCLES_PIDS.  Based on a report from Michael
          Haubenwallner <michael.haubenwallner@salomon.at>

                                   7/26
                                   ----
jobs.c
        - make_child: call bgp_delete on the newly-created pid unconditionally.
          Some systems reuse pids before cycling through an entire set of
          CHILD_MAX/_SC_CHILD_MAX unique pids.  This is no longer dependent
          on RECYCLES_PIDS.  Based on a report from Michael Haubenwallner
          <michael.haubenwallner@salomon.at>

support/shobj-conf
        - Mac OS X: drop MACOSX_DEPLOYMENT_TARGET=10.3 from the LDFLAGS. We
          can finally kill Panther

                                   7/28
                                   ----
subst.c
        - command_substitute: make sure last_made_pid gets reset if make_child
          fails

execute_cmd.c
        - execute_command_internal: case cm_simple: decide whether or not to
          wait_for a child if already_making_children is non-zero, indicates
          that there is an unwaited-for child.  More of fix for bug report
          from Michael Haubenwallner <michael.haubenwallner@salomon.at>

jobs.c
        - make_child: call delete_old_job (new_pid) unconditionally, don't
          bother to check whether or not pid wrap occurred.  Rest of fix for
          bug report from Michael Haubenwallner
          <michael.haubenwallner@salomon.at>

                                   7/29
                                   ----
shell.c
        - subshell_exit: new function, exits the shell (via call to sh_exit())
          after calling any defined exit trap

externs.h
        - subshell_exit: new extern declaration

execute_cmd.c
        - execute_command_internal: make sure to call subshell_exit for
          {} group commands executed asynchronously (&).  Part of fix for
          EXIT trap bug reported by Maarten Billemont <lhunath@lyndir.com>

sig.c
        - reset_terminating_signals: make sure to set termsigs_initialized back
          to 0, so a subsequent call to initialize_terminating_signals works
          right.  Rest of fix for bug reported by Maarten Billemont
          <lhunath@lyndir.com>

{execute_cmd,general,jobs,mailcheck,mksyntax,test}.c
builtins/{cd,fc,pushd,ulimit}.def
lib/malloc/getpagesize.h
lib/sh/{clktck,fpurge,inet_aton,mailstat,oslib,pathcanon,pathphys,spell,strerror}.c
        - make inclusion of <sys/param.h> dependent on HAVE_SYS_PARAM_H
          consistently

                                    8/6
                                    ---
lib/readline/histexpand.c
        - history_expand_internal: now takes an additional argument saying
          whether the history expansion occurs within a quoted string, set to
          the open quote character
        - history_expand_internal: use new argument instead of checking prev
          char and initializing quoted_search_delimiter, pass qc directly to
          get_history_event, where it allows a matching quote to terminate a
          string defining an event
        - history_expand: change single-quote handling code so that if
          history_quotes_inhibit_expansion is 0, single quotes are treated
          like double quotes
        - history_expand: change call to history_expand_internal to pass new
          argument of `"' if double-quoted string, `'' if single-quoted string;
          this lets history_expand decide what is a quoted string and what
          is not

                                    8/7
                                    ---
configure.in
        - AC_CANONICAL_BUILD: invoke for later use

lib/readline/macro.c
        - _rl_prev_macro_key: new function, inverse of _rl_next_macro_key:
          backs up the index into the current macro by 1

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


lib/readline/readline.c
        - _rl_dispatch_subseq, _rl_subseq_result: don't call _rl_unget_char
          if we're currently reading from a macro; call _rl_prev_macro_key
          instead.  Fixes bug reported by Clark Wang <clark.wang@oracle.com>

                                   8/13
                                   ----
builtins/evalstring.c
        - evalstring(): new function, wrapper around parse_and_execute.
          make sure we handle cases where parse_and_execute can call `return'
          and short-circuit without cleaning up properly.  We call
          parse_and_execute_cleanup() then jump to the previous-saved return
          location

builtins/common.h
        - extern declaration for evalstring()

builtins/eval.def
        - eval_builtin: make sure we handle `eval " ... return"' in contexts
          where `return' is valid by calling evalstring().  Fixes bug with
          `eval return' in sourced files reported by Clark Wang
          <dearvoid@gmail.com>

trap.c
        - run_pending_traps: call evalstring instead of parse_and_execute.
          XXX - still needs to handle saving and restoring token state in the
          presence of `return'; could use unwind_protects for that

builtins/mapfile.def
        - run_callback: call evalstring instead of parse_and_execute

                                   8/15
                                   ----
bashline.c
        - bash_filename_stat_hook: make sure we don't free local_dirname
          before using it to canonicalize any expanded filename.  Make sure
          it always points to *dirname and only free it if we're replacing
          it.

lib/readline/complete.c
        - append_to_match: make sure we call rl_filename_stat_hook with
          newly-allocated memory to avoid problems with freeing it twice

                                   8/17
                                   ----
variables.c,config-top.h
        - if ARRAY_EXPORT is defined to 1 when variables.c is compiled, the
          code that allows indexed arrays to be exported is enabled and
          included

                                   8/19
                                   ----
shell.c
        - call start_debugger from main() only if dollar_vars[1] != 0 (close
          enough to a non-interactive shell, since we can be interactive with
          -i while running a shell script).  Fixes oddity reported by
          Techlive Zheng <techlivezheng@gmail.com>

                                   8/20
                                   ----
arrayfunc.c
        - quote_array_assignment_chars: don't bother quoting if the word has
          not been marked as an assignment (W_ASSIGNMENT)
        - quote_array_assignment_chars: turn on W_NOGLOB in the word flags
          so assignment statements don't undergo globbing.  Partial fix for
          problems reported by Dan Douglas <ormaaj@gmail.com>

                                   8/21
                                   ----
command.h
        - W_NOBRACE: new word flag that means to inhibit brace expansion

subst.c
        - brace_expand_word_list: suppress brace expansion for words with
          W_NOBRACE flag

                                   8/22
                                   ----
builtins/read.def
        - read_builtin: don't call dequote_string on what we've read, even if
          we saw an escape character, unless (input_string && *input_string).
          We may have escaped an IFS whitespace character.  Fixes seg fault
          reported by <armandsl@gmail.com>

execute_cmd.c
        - execute_command_internal: set the_printed_command_except trap when
          about to execute a ( ... ) user subshell.  For now, set it only if
          ERR is trapped; can relax that later.  Fixes bug reported by
          Mike Frysinger <vapier@gentoo.org>

                                   8/23
                                   ----
jobs.c
        - remove references to first_pid and pid_wrap, since we're not using
          them for anything anymore

                                   8/24
                                   ----
subst.c
        - changes for W_NOBRACE everywhere appropriate: so it can be displayed
          for debugging, and passed out of expand_word_internal

doc/{bash.1,bashref.texi}
        - small changes to make it clearer that the = and == operators are
          equivalent, and will cause pattern matching when used with [[.
          From a question from Michal Soltys <soltys@ziu.info>

doc/bashref.texi
        - some small formatting changes from Karl Berry <karl@freefriends.org>

                                   8/27
                                   ----
lib/readline/doc/{history,rlman,rluserman}.texi
        - some small formatting changes from Karl Berry <karl@freefriends.org>

arrayfunc.c
        - assign_array_element_internal, assign_compound_array_list,
          unbind_array_element, array_value_internal: changes to make
          assignment statements to negative indices (a[-1]=2) and unsetting
          array elements using negative indices (unset 'a[-1]') work.
          From suggestions by Dennis Williamson <dennistwilliamson@gmail.com>
          and Chris F. A. Johnson <chris@cfajohnson.com>

subst.c
        - array_length_reference: changes to make length references to array
          elements using negative indices (${#a[-1]}) work

                                   8/28
                                   ----
doc/{bash.1,bashref.texi}
        - document new treatment of negative indices to indexed arrays when
          assigning, referencing, calculating length, and unsetting

                                   8/29
                                   ----
shell.c
        - show_shell_usage: add -l to list of shell invocation options (short
          for --login).  From Red Hat bug 852469

configure.ac
        - renamed from configure.in, as latest autoconf versions want.  Patches
          Stefano Lattarini <stefano.lattarini@gmail.com>

MANIFEST,Makefile.in,doc/bashref.texi,support/mkconffiles
        - configure.in -> configure.ac

                                    9/1
                                    ---

parse.y
        - read_token_word: allow words like {array[ind]} to be valid redirection
          words for constructs like {x}<file

redir.c
        - redir_varassign: bind_var_to_int already handles array assignments,
          so don't need to do anything more for things like {a[i]}<file
        - redir_varvalue: changes to allow references to {a[i]} when
          performing redirections using valid_array_reference and
          get_array_value.  Adds functionality requested most recently by
          <unknown@vmw-les.eng.vmware.com>

lib/readline/display.c
        - update_line: if the first difference between the old and new lines
          is completely before any invisible characters in the prompt, we
          should not adjust _rl_last_c_pos, since it's before any invisible
          characters.  Fixed in two places
        - prompt_modechar: return a character indicating the editing mode:
          emacs (@), vi command (:), or vi insert (+)
        - _rl_reset_prompt: new function, just calls rl_expand_prompt.  Will be
          inlined, placeholder for more changes
        - expand_prompt: if show-mode-in-prompt is enabled, add a character to
          the front of the prompt indicating the editing mode, adjusting the
          various variables as appropriate to keep track of the number of
          visible characters and number of screen positions

lib/readline/bind.c
        - show-mode-in-prompt: new bindable boolean variable, shadowed by
          _rl_show_mode_in_prompt variable
        - hack_special_boolean_var: call _rl_reset_prompt when toggling or
          setting show-mode-in-prompt

lib/readline/readline.c
        - readline_internal_setup: make sure the correct vi mode keymap is set
          before expanding the prompt string for the first time

lib/readline/misc.c
        - rl_emacs_editing_mode: make sure to call _rl_reset_prompt if we're
          showing the editing mode in the prompt

lib/readline/rlprivate.h
        - _rl_reset_prompt, _rl_show_mode_in_prompt: extern declarations

lib/readline/vi_mode.c
        - rl_vi_insertion_mode: call _rl_reset_prompt
        - rl_vi_movement_mode: call _rl_reset_prompt.  Finishes changes for
          showing mode in prompt string, originally requested by Miroslav
          Koskar <mkoskar@gmail.com> and most recently by Jordan Michael
          Ziegler <jziegler@bnl.gov>

doc/bash.1,lib/readline/doc/{readline.3,rluser.texi}
        - document new show-mode-in-prompt variable, off by default

                                    9/3
                                    ---

jobs.c
        - set_childmax: new function, external mechanism for other parts of
          the shell to set js.c_childmax, the number of saved exited child
          statuses to remember
jobs.h
        - set_childmax: extern declaration

variables.c
        - CHILD_MAX: new special variable, with sv_childmax function to
          run when it changes.  Setting CHILD_MAX to a value greater than
          zero but less than some maximum (currently 8192) sets the number of
          exited child statuses to remember.  set_childmax (jobs.c) ensures
          that the number does not drop below the posix-mandated minimum
          (CHILD_MAX)

doc/{bash.1,bashref.texi}
        - CHILD_MAX: document new meaning and action when variable is set

                                    9/5
                                    ---
redir.c
        - redir_varassign: call stupidly_hack_special_variables after
          assigning fd number to specified variable, so we can use constructs
          like {BASH_XTRACEFD}>foo.  Suggested by Pierre Gaston
          <pierre.gaston@gmail.com>

                                    9/8
                                    ---
expr.c
        - readtok: invalidate previous contents of `curlval' before freeing
          and reallocating tokstr (which, chances are, will get the same
          pointer as before and render curlval inconsistent).  Fixes other
          bug reported by Dan Douglas <ormaaj@gmail.com>

                                    9/9
                                    ---
lib/readline/complete.c
        - rl_username_completion_function: protect call to setpwent() with
          #ifdef (HAVE_GETPWENT)/#endif.  Fixes bug reported by
          Gerd Hofmann <gerd.hofmann.nbg@googlemail.com>

lib/readline/display.c
        - rl_message: second and subsequent calls to rl_message can result in
          local_prompt being overwritten with new values (e.g., from the
          successive calls displaying the incremental search string).  Need
          to free before overwriting if it's not the same as the value saved
          in saved_local_prompt.  Fixes memory leak reported by
          Wouter Vermaelen <vermaelen.wouter@gmail.com>

lib/readline/{terminal.c,rlprivate.h}
        - move CUSTOM_REDISPLAY_FUNC and CUSTOM_INPUT_FUNC defines from
          terminal.c to rlprivate.h so other files can use them

expr.c
        - expr_streval: if noeval is non-zero, just return 0 right away,
          short-circuiting evaluation completely.  readtok will leave curtok
          set correctly without re-entering the evaluator at all.  Rest of
          fix for bug reported by Dan Douglas <ormaaj@gmail.com>

                                   9/11
                                   ----

parse.y
        - parse_comsub: make sure the `reserved word ok in this context' flag
          is preserved after we read `do' followed by whitespace.  Fixes bug
          reported by Benoit Vaugon <benoit.vaugon@gmail.com>

                                   9/13
                                   ----
configure.ac,config.h.in
        - enable-direxpand-default: new configure option, turns the `direxpand'
          shell option on by default

bashline.c
        - dircomplete_expand, dircomplete_expand_relpath: initialize to 1 if
          DIRCOMPLETE_EXPAND_DEFAULT is defined and non-zero

doc/bashref.texi
        - enable-direxpand-default: document new configure option

                                   9/14
                                   ----
shell.c
        - --protected: make option valid only when wordexp is compiled into
          the shell.  Fix from Roman Rakus <rrakus@redhat.com>

configure.ac
        - HP NonStop (*-nsk*): compile --without-bash-malloc. Change from
          Joachim Schmitz <jojo@schmitz-digital.de>

                                   9/16
                                   ----
subst.c,execute_cmd.c,lib/glob/sm_loop.c,lib/sh/shquote.c
        - minor code cleanups from Joachim Schmitz <jojo@schmitz-digital.de>

lib/readline/colors.h
        - workaround for HP NonStop compiler issue with <stdbool.h> from
          Joachim Schmitz <jojo@schmitz-digital.de>

                                   9/17
                                   ----
builtins/printf.def
        - printf_builtin: handle localtime returning NULL, as can happen when
          encountering overflow.  Bug report and initial fix from
          Eduardo A. Bustamante López <dualbus@gmail.com>

doc/{bash.1,bashref.texi}
        - emphasize that brace expansion using character ranges ({a..c}) acts
          as if the C locale were in use.  Prompted by message from
          Marcel Giannelia <info@skeena.net>

                                   9/20
                                   ----
lib/sh/wcsnwidth.c
        - wcsnwidth: new function, variant of wcwidth, returns the number of
          wide characters from a string that will be displayed to not exceed
          a specified max column position

                                   9/21
                                   ----
builtins/help.def
        - show_builtin_command_help: break code that displays the short-doc
          for each builtin in two columns into a new function: dispcolumn
        - wdispcolumn: multibyte-char version of dispcolumn; uses wide
          chars and printf "%ls" format.  Fixes problem reported by
          Nguyá»n Thái Ngá»c Duy <pclouds@gmail.com>

                                   9/22
                                   ----
execute_cmd.c
        - execute_disk_command: before running the command-not-found hook,
          call kill_current_pipeline() to make sure we don't add processes
          to an existing pipeline or wait for processes erroneously

                                   9/23
                                   ----
lib/readline/input.c
        - rl_input_available_hook: new hook function, called from
          _rl_input_available (or _rl_input_queued) to return whether or not
          input is available wherever the input source is

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

                                   9/27
                                   ----
lib/glob/sm_loop.c:
        - GMATCH: after one or more `*', an instance of ?(x) can match zero or
          1 times (unlike ?, which has to match one character).  The old code
          failed if it didn't match at least once.  Fixes `a*?(x)' bug.
        - GMATCH: if we hit the end of the search string, but not the end of
          the pattern, and the rest of the pattern is something that can
          match the NUL at the end of the search string, we should successfully
          match.  Fixes `a*!(x)' bug reported by <hans1worst@gmail.com>

                                   10/2
                                   ----
command.h
        - add c_lock member to coproc structure for future use to tell who is
          manipulating it

execute_cmd.c
        - execute_coproc: block SIGCHLD while parent is forking coproc
          process and adding pid to sh_coproc struct to avoid race condition
          where child is reaped before the pid is assigned and the coproc is
          never marked as having died.  Fixes race condition identified by
          Davide Baldini <baldiniebaldini@gmail.com>
        - add assignments to c_lock member of struct coproc in various
          functions that manipulate it; was used to identify race condition
        - coproc_pidchk: don't call coproc_dispose to avoid using malloc and
          other functions in a signal handler context
        - coproc_dispose: call BLOCK_SIGNAL/UNBLOCK_SIGNAL for SIGCHLD while
          manipulating the sh_coproc struct

                                   10/6
                                   ----
lib/readline/complete.c
        - rl_display_match_list: if printing completions horizontally, don't
          bother with spacing calculations if limit == 1, which means we are
          printing one completion per line no matter what.  Fixes bug
          reported by David Kaasen <kaasen@nvg.ntnu.no>

                                   10/7
                                   ----
builtins/declare.def
        - declare_internal: add error checking for nameref attribute and
          variable assignments: self-references, attempts to make an array
          variable a nameref

subst.c
        - parameter_brace_expand: handle parameter_brace_expand_word returning
          &expand_param_fatal or &expand_param_error and return the appropriate
          error value
        - parameter_brace_expand_word: if a nameref variable's value is not a
          valid identifier, return an error
        - param_expand: if a nameref variable's value is not a valid identifier,
          return an error

test.c
        - unary_operator: add new -R variable, returns true if variable is set
          and has the nameref attribute. From ksh93

builtins/test.def
        - add -R to description of conditional commands for help test

doc/{bash.1,bashref.texi}
        - document new -R unary conditional operator

                                   10/13
                                   -----
trap.c
        - check_signals_and_traps: new function, convenience function for the
          rest of the shell to check for pending terminating and interrupt
          signals, and to check for and process any pending traps
        - any_signals_trapped: new function, returns non-zero if any signals
          are trapped and -1 if not

trap.h
        - extern declaration for check_signals_and_traps

bashline.c
        - bashline_reset: make sure we reset the event hook
        - bash_event_hook: call check_signals_and_traps instead of just
          checking for terminating signals so we can run pending traps and
          react to interrupts, and reset the event hook when we're done


                                   10/14
                                   -----
trap.c
        - trap_handler: if executing in a readline signal handler context,
          call bashline_set_event_hook to install bash_event_hook to process
          the signal (if bash cares about it)

sig.c
        - sigint_sighandler: call bashline_set_event_hook to set the event
          hook if we're executing in a readline signal handler context

lib/readline/input.c
        - rl_getc: call RL_CHECK_SIGNALS if read returns -1/EINTR and the caught
          signal is SIGINT or SIGQUIT rather than waiting until the next time
          around the loop
        - rl_getc: call rl_event_hook after calling RL_CHECK_SIGNALS to allow
          an application signal handler to set the event hook in its own
          signal handler (e.g., like bash trap_handler or sigint_sighandler)


parse.y
        - yy_readline_get: don't set interrupt_immediately before we call
          readline().  Inspired by report from lanshun zhou
          <zls.sogou@gmail.com>

input.c
        - getc_with_restart: add call to run_pending_traps after call to
          CHECK_TERMSIG

lib/sh/zread.c
        - zread: call check_signals_and_traps if read() returns -1/EINTR
          instead of just ignoring the EINTR and deferring handling any
          signal that generated it

builtins/mapfile.def
        - mapfile: don't set interrupt_immediately before calling zgetline()
          (which uses zread internally)

builtins/read.def
        - read_builtin: don't set interrupt_immediately before calling zread
          (moved code around so that it was only being set right around calls
          to zread to avoid signal handler conflicts).  Inspired by report
          from lanshun zhou <zls.sogou@gmail.com>
        - edit_line: don't set interrupt_immediately around call to readline()
        - include shmbutil.h
        - read_builtin: don't call read_mbchar unless is_basic(c) returns
          false for the character we just read

                                   10/15
                                   -----
sig.c
        - throw_to_top_level: if interrupt_state is non-zero, make sure that
          last_command_exit_value reflects 128+SIGINT if it's not already
          greater than 128

                                   10/20
                                   -----
builtins/wait.def
        - WAIT_RETURN: set wait_signal_received back to 0 for the potential
          next call to wait

quit.h
        - CHECK_WAIT_INTR: macro to check whether trap_handler handled a
          signal and set wait_signal_received; longjmp to wait_intr_buf in
          that case

jobs.c
        - wait_for, waitchld: call CHECK_WAIT_INTR at the same places we call
          CHECK_TERMSIG to check for terminating signals
        - wait_sigint_handler: don't longjmp out of the wait builtin unless
          interrupt_immediately is set; otherwise just SIGRETURN from the
          handler
        - wait_sigint_handler: if interrupt_immediately not set, but we are
          executing in the wait builtin and SIGINT is not trapped, treat it
          as a `normally received' SIGINT: restore the signal handler and
          send SIGINT to ourselves
        - waitchld: when in posix mode and running SIGCHLD traps, don't longjmp
          to wait_intr_buf (and let wait be interrupted) if we're running from
          a signal handler.  Wait for CHECK_WAIT_INTR to do the longjmp.
          run_pending_traps will run the SIGCHLD trap later

nojobs.c
        - reap_zombie_children, wait_for_single_pid, wait_for: call
          CHECK_WAIT_INTR where we call CHECK_TERMSIG
        - wait_sigint_handler: don't longjmp out of the wait builtin unless
          interrupt_immediately is set; otherwise just SIGRETURN from the
          handler

trap.c
        - trap_handler: make sure wait_signal_received is set if the wait
          builtin is executing, and only longjmp if interrupt_immediately is
          set.  This whole set of fixes was prompted by report from
          lanshun zhou <zls.sogou@gmail.com>

                                   10/24
                                   -----
lib/glob/glob.c
        - glob_filename: only check directory_name for globbing chars if
          it's of non-zero length

lib/sh/strchrnul.c
        - new simpler implementation

subst.c
        - command_substitute: call set_shellopts after turning off errexit
          in subshells so it's reflected in $SHELLOPTS

                                   11/7
                                   ----
builtins/evalstring.c
        - parse_and_execute: treat ERREXIT case like reader_loop does: set
          variable_context to 0 before longjmping back to top_level. Don't
          run the unwind-protect context to avoid side effects from popping
          function contexts.  Part of fix for problem reported by Nikolai
          Kondrashov <nikolai.kondrashov@redhat.com>

execute_cmd.c
        - execute_simple_command: call unlink_fifo_list only if this is the
          last element of a pipeline (or not in a pipeline), rather than for
          every child.  Fixes difference in behavior between /dev/fd and
          FIFOs reported by Zev Weiss <zev@bewilderbeest.net>
        - execute_null_command: do the same thing in the parent branch after
          make_child

                                   11/14
                                   -----
subst.c
        - parameter_brace_expand: a variable is null if it's special ($@, $*),
          the expansion occurs within double quotes, and the expansion turns
          into a quoted null.  Fixes debian bug 692447 reported by
          Matrosov Dmitriy <sgf.dma@gmail.com>

jobs.c
        - run_sigchld_trap: make sure `running_trap' sentinel is set
          appropriately
        - waitchld: only run the sigchld trap if we're not in a signal
          handler, not running a trap, and executing the wait builtin.
          Otherwise, queue for later handling.  We still run one instance
          of the trap handler per exited child.  Bulk of fix for bug
          reported by Elliott Forney <idfah@cs.colostate.edu>

trap.c
        - queue_sigchld_trap: set catch_flag so run_pending_traps notices,
          and set trapped_signal_received for completeness.  Rest of fix
          for bug reported by Elliott Forney <idfah@cs.colostate.edu>

lib/malloc/malloc.c
        - block_signals: renamed to _malloc_block_signals, made public
        - unblock_signals: renamed to _malloc_unblock_signals, made public

lib/malloc/imalloc.h
        - extern declarations for _malloc_{un,}block_signals

lib/malloc/table.c
        - mregister_alloc, mregister_free: block signals around table
          manipulation

                                   11/15
                                   -----
trap.c
        - run_pending_traps: set SIG_INPROGRESS flag around calls to
          run_sigchld_handler so other parts of the shell know that the
          SIGCHLD trap handler is executing
        - run_pending_traps: if we get a situation where we are looking at
          running a SIGCHLD trap but the trap string is IMPOSSIBLE_TRAP_HANDLER
          and the SIG_INPROGRESS flag is set, just skip it.  This is possible
          if run_pending_traps is called from a SIGCHLD trap handler run by
          run_sigchld_trap

doc/bash.1,lib/readline/doc/{rluser.texi,readline.3}
        - corrected description of the effect of `set history-size 0'.  Report
          from Vesa-Matti J Kari <vmkari@cc.helsinki.fi>

include/stdc.h
        - CPP_STRING: new define, replaces __STRING

lib/malloc/{malloc.c,imalloc.h}
        - replace __STRING with CPP_STRING

                                   11/16
                                   -----
lib/readline/bind.c
        - sv_histsize: if argument evaluates to a value < 0, unstifle the
          history

                                   11/22
                                   -----
redir.c
        - do_redirection_internal: if we have REDIR_VARASSIGN set in the
          redirection flags and we set up `redirector' using fcntl or dup2,
          don't add a redirect to make sure it stays open.  Let the
          script programmer manage the file handle.  Fixes bug reported by
          Sam Liddicott <sam@liddicott.com>

                                   11/24
                                   -----
jobs.c
        - wait_for_any_job: new function, waits for an unspecified background
          job to exit and returns its exit status.  Returns -1 on no background
          jobs or no children or other errors.  Calls wait_for with new
          sentinel value ANY_PID
        - wait_for: changes to handle argument of ANY_PID: don't look up or
          try to modify the child struct, only go through the wait loop once.
          Return -1 if waitpid returns no children

jobs.h
        - ANY_PID: new define

builtins/wait.def
        - new option: -n. Means to wait for the next job and return its exit
          status.  Returns 127 if there are no background jobs (or no
          children).  Feature most recently requested by Elliott Forney
          <idfah@cs.colostate.edu>

doc/{bash.1,bashref.texi}
        - document new `wait -n' option

execute_cmd.c
        - execute_command_internal: save make_command_string () result in a
          temp variable before calling savestring() on it; avoids evaluating
          make_command_string() result twice.  Fix from John E. Malmberg
          <wb8tyw@qsl.net>

                                   11/28
                                   -----

builtins/declare.def
        - declare_internal: if an array variable is declared using `declare -a'
          or `declare -A', but not assigned a value, set the `invisible'
          attribute so the variable does not show up as set.  Fix for bug
          about variable initialization reported by Tim Friske <me@timfriske.com>

builtins/{mapfile,read}.def
        - after calling find_or_make_array_variable, make sure the invisible
          flag is turned off, in case the variable was declared previously
          using `declare -a' or `declare -A'.  Side effect of above change to
          declare_internal

subst.c
        - shell_expand_word_list: handle the W_ASSNGLOBAL flag and put -g into
          the list of options passed to make_internal_declare as appropriate.
          Fix for bug reported by Tim Friske <me@timfriske.com>

                                   11/30
                                   -----
test.c
        - unary_op: make sure -v and -n check that the variable is not marked
          as invisible before calling var_isset.  Fix for bug reported by Tim
          Friske <me@timfriske.com>

                                   12/2
                                   ----
subst.c
        - process_substitute: turn off the `expanding_redir' flag, which
          controls whether or not variables.c:find_variable_internal uses the
          temporary environment to find variables.  We want to use the
          temp environment, since we don't have to worry about order of
          evaluation in a subshell.  Fixes bug reported by Andrey Borzenkov
          <arvidjaar@gmail.com>

                                   12/4
                                   ----
lib/glob/glob.c
        - glob_filename: changes to avoid null filenames and multiple entries
          returned for patterns like **/** (globstar enabled).  Fixes bug
          reported by Ulf Magnusson <ulfalizer@gmail.com>

                                   12/10
                                   -----
lib/glob/glob.c
        - glob_filename: finish up a series of changes to make globstar-style   
          globbing more efficient, avoid more duplicate filenames, and be more
          compatible with other shells that implement it
                o collapse a sequence of **/**/** to one **
                o note when the directory name is all ** or ends in ** so we
                  can treat it specially when the filename is **
          All inspired by report from Andrey Borzenkov <arvidjaar@gmail.com>

lib/sh/zread.c
        - zreadn: new function, like zread, but takes an additional argument
          saying how many bytes to read into the local buffer.  Can be used to
          implement `read -N' without so many one-byte calls to zreadc.  Code
          from Mike Frysinger <vapier@gentoo.org>

                                   12/12
                                   -----
lib/glob/sm_loop.c
        - PATSCAN (glob_patscan): if passed string already points to end of
          pattern, return NULL immediately.  Fixes problem with
          extglob_skipname reported by Raphaël Droz <raphael.droz@gmail.com>

                                   12/13
                                   -----
execute_cmd.c
        - execute_coproc: handle the command's exit status being inverted
          (an oversight).  Fixes bug reported by DJ Mills
          <danielmills1@gmail.com> and Andreas Schwab <schwab@linux-m68k.org>

                                   12/14
                                   -----
lib/readline/readline.c
        - bind_arrow_keys_internal: add MINGW key bindings for Home, End,
          Delete, and Insert keys.  Fix from Pierre Muller
          <pierre.muller@ics-cnrs.unistra.fr>

builtins/printf.def
        - printf_builtin: '%()T' conversion: if there is no argument supplied,
          behave as if -1 had been supplied (current time).  ksh93-like feature
          suggested by Clark Wang <dearvoid@gmail.com>

doc/{bash.1,bashref.texi}
        - document new printf %()T default argument behavior

                                   12/15
                                   -----
lib/readline/display.c
        - displaying_prompt_first_line: new variable, indicates whether or
          not the first line of output is displaying the prompt.  Always true
          in normal mode, sometimes false in horizontal scrolling mode
        - rl_redisplay: set displaying_prompt_first_line to true unless we
          are in horizontal mode; set to false in horizontal mode if the left
          margin of the displayed line is greater than the end of the prompt
          string
        - rl_redisplay: when in horizontal scroll mode, don't adjust
          _rl_last_c_pos by the wrap offset unless the line is displaying
          a prompt containing invisible chars
        - update line: don't adjust _rl_last_c_pos by the wrap offset unless
          the line is displaying a prompt containing invisible chars
        - update_line: if shrinking the line by reducing the number of
          displayed characters, but we have already moved the cursor to the
          beginning of the line where the first difference starts, don't
          try to delete characters

builtins/read.def
        - unbuffered_read: set to 2 if invoked as `read -N'
        - if unbuffered_read is set to 2, compute the number of chars we
          need to read and read that many with zreadn.  Posix mode still
          uses zreadintr.  Code from Mike Frysinger <vapier@gentoo.org>

doc/{bash.1,bashref.texi}
        - read: make it clear that if read times out, it saves any input
          read to that point into the variable arguments.  Report from
          Fiedler Roman <Roman.Fiedler@ait.ac.at>

subst.c
        - command_substitute: change direct assignment of exit_immediately_on_error
          to use change_flag ('e', FLAG_OFF) instead

flags.c
        - use errexit_flag as the variable modified by changes to the -e
          option, reflect those changes to exit_immediately_on_error

execute_cmd.c
        - execute_builtin: new global variable, builtin_ignoring_errexit, set
          to 0 by default and set to 1 if eval/source/command executing in a
          context where -e should be ignored
        - execute_builtin: set exit_immediately_on_error to errextit_flag
          after executing eval/source/command in a context where -e should
          be ignored

flags.c
        - if builtin_ignoring_errexit is set, changes to errexit_flag are
          not reflected in the setting of exit_immediately_on_error.  Fixes
          bug reported by Robert Schiele <rschiele@gmail.com>

                                   12/23
                                   -----
include/posixjmp.h
        - setjmp_nosigs: new define, call setjmp in such a way that it will
          not manipulate the signal mask

{expr,test,trap}.c
        - setjmp_nosigs: call instead of setjmp; don't need to manipulate
          signal mask

builtins/read.def
        - read_builtin: setjmp_nosigs: call instead of setjmp; don't need
          to manipulate signal mask

builtins/evalstring.c:
        - parse_and_execute: setjmp_nosigs: call instead of setjmp; don't need
          to manipulate signal mask
        - parse_string: setjmp_nosigs: call instead of setjmp; don't need
          to manipulate signal mask
        - parse_and_execute: save and restore the signal mask if we get a
          longjmp that doesn't cause us to return or exit (case DISCARD)

                                   12/24
                                   -----
general.c
        - bash_tilde_expand: only set interrupt_immediately if there are no
          signals trapped; we want to jump to top level if interrupted but
          not run any trap commands

                                   12/25
                                   -----
jobs.c
        - run_sigchld_trap: no longer set interrupt_immediately before calling
          parse_and_execute, even if this is no longer run in a signal handler
          context

input.c
        - getc_with_restart: add call to QUIT instead of CHECK_TERMSIG

parse.y
        - yy_stream_get: now that getc_with_restart calls QUIT, don't need to
          set interrupt_immediately (already had call to run_pending_traps)

execute_cmd.c
        - execute_subshell_builtin_or_function,execute_function,execute_in_subshell:
          setjmp_nosigs: call instead of setjmp when saving return_catch; don't
          need to manipulate signal mask
        - execute_subshell_builtin_or_function,execute_in_subshell:
          setjmp_nosigs: call instead of setjmp where appropriate when saving
          top_level; don't need to manipulate signal mask if we're going to
          exit right away

subst.c
        - command_substitute: setjmp_nosigs: call instead of setjmp when saving
          return_catch; don't need to manipulate signal mask
        - command_substitute: setjmp_nosigs: call instead of setjmp where
          appropriate when saving top_level; don't need to manipulate signal
          mask if we're going to exit right away

trap.c
        - run_exit_trap: setjmp_nosigs: call instead of setjmp when saving
          return_catch; don't need to manipulate signal mask
        - run_exit_trap: setjmp_nosigs: call instead of setjmp where
          appropriate when saving top_level; don't need to manipulate signal
          mask if we're going to exit right away
        - _run_trap_internal: setjmp_nosigs: call instead of setjmp when saving
          return_catch; don't need to manipulate signal mask

builtins/evalfile.c
        - _evalfile: setjmp_nosigs: call instead of setjmp when saving
          return_catch; don't need to manipulate signal mask

builtins/evalstring.c
        - evalstring: setjmp_nosigs: call instead of setjmp when saving
          return_catch; don't need to manipulate signal mask

shell.c
        - main: setjmp_nosigs: call instead of setjmp where appropriate when
          saving top_level; don't need to manipulate signal mask if we're
          going to exit right away
        - run_one_command: setjmp_nosigs: call instead of setjmp where
          appropriate when saving top_level; don't need to manipulate signal
          mask if we're going to exit right away
        - run_wordexp: setjmp_nosigs: call instead of setjmp where
          appropriate when saving top_level; don't need to manipulate signal
          mask if we're going to exit right away

eval.c
        - reader_loop: save and restore the signal mask if we get a longjmp
          that doesn't cause us to return or exit (case DISCARD)

                                   12/26
                                   -----
parse.y
        - shell_input_line_{index,size,len}: now of type size_t; in some cases
          the unsigned property makes a difference
        - STRING_SAVER: saved_line_{size,index} now of type size_t
        - shell_getc: don't allow shell_input_line to grow larger than SIZE_MAX;
          lines longer than that are truncated until read sees a newline;
          addresses theoretical buffer overflow described by Paul Eggert
          <eggert@cs.ucla.edu>
        - set_line_mbstate: size_t changes like shell_getc
        - shell_getc: if shell_input_line is larger than 32K, free it and
          start over to avoid large memory allocations sticking around

variables.c
        - bind_global_variable: new function, binds value to a variable in
          the global shell_variables table

variables.h
        - bind_global_variable: new extern declaration

builtins/declare.def
        - declare_internal: if -g given with name=value, but variable is not
          found in the global variable table, make sure to call
          bind_global_variable so the variable is created and modified at
          global scope.  Fixes a bug where declare -g x=y could modify `x'
          at a previous function scope

command.h
        - W_ASSIGNARRAY: new word flag, compound indexed array assignment

subst.h
        - ASS_MKGLOBAL: new assignment flag, forcing global assignment even in
          a function context, used by declare -g

execute_cmd.c
        - fix_assignment_words: set W_ASSIGNARRAY flag if -a option given to
          declaration builtin

subst.c
        - do_assignment_internal: explicitly handle case where we are
          executing in a function and we want to create a global array or
          assoc variable
        - shell_expand_word_list: call make_internal_declare if -a option
          given to declaration builtin (W_ASSIGNARRAY); handle -g option with
          it (W_ASSNGLOBAL).  Fixes inconsistency noticed by Vicente Couce
          Diaz <vituko@gmail.com>, where declare -ag foo=(bar) could modify
          array variable foo at previous function scope, not global scope

                                   12/27
                                   -----
bashline.c
        - Minix needs the third argument to tputs to be a void funtion taking
          an int argument, not an int-returning function.  Fix from
          John E. Malmberg <wb8tyw@qsl.net> as part of VMS bash port

                                   12/29
                                   -----
configure.ac,version.c,patchlevel.h
        - bash-4.3-devel: new version, new shell compatibility level (43)

subst.c
        - parameter_brace_patsub: put the bash-4.2 code back in from the
          change of 3/3 that runs the replacement string through quote
          removal, make it dependent on shell_compatibility_level <= 42

builtins/shopt.def
        - compat42: new shopt option
        - set_compatibility_level: change logic to set and unset various
          compat variables and shell_compatibility_level

COMPAT
        - new documentation for bash-4.3 compatibility changes

doc/{bash.1,bashref.texi}
        - compat42: document new shopt option

builtins/shopt.def
        - set_compatibility_opts: new function, sets the various shopt
          compat variables based on the value of shell_compatibility_level

builtins/common.h
        - set_compatibility_opts: new extern declaration

variables.c
        - BASH_COMPAT: new special variable; sets the shell compatibility
          level.  Accepts values in decimal (4.2) or integer (42) form;
          Unsetting variable, setting it to empty string, or setting it to
          out-of-range value sets the shell's compatibility level to the
          default for the current version.  Valid values are 3.1/31 through
          the current version
        - sv_shcompat: new function implementing logic for BASH_COMPAT

variables.h
        - sv_shcompat: new extern declaration

doc/{bash.1,bashref.texi}
        - BASH_COMPAT: description of new variable

lib/readline/complete.c
        - _rl_colored_stats: default back to 0 for 4.3 release branch

                                 1/5/2013
                                 --------
quit.h
        - remove spurious call to itrace in CHECK_WAIT_INTR

bashline.c
        - bash_event_hook: if we're going to jump to top_level, make sure we
          clean up after readline() by calling rl_cleanup_after_signal().
          Fixes bug reported against devel branch by Raphaël Droz
          <raphael.droz@gmail.com>
        - bash_event_hook: reset the event hook before checking for signals
          or traps in case we longjmp

doc/{bash.1,bashref.texi}
        - small additions to the set -e section to make it more clear that
          contexts where -e is ignored extend to compound commands as well
          as shell functions

lib/readline/readline.h
        - rl_signal_event_hook: new extern declaration

lib/readline/input.c
        - rl_signal_event_hook: new variable, hook function to call when a
          function (currently just read(2)) is interrupted by a signal and
          not restarted
        - rl_getc: call rl_signal_event_hook instead of rl_event_hook

lib/readline/doc/rltech.texi
        - rl_signal_event_hook: document new function

bashline.c
        - changes to set rl_signal_event_hook instead of rl_event_hook

lib/readline/readline.h
        - change readline version numbers to 6.3

                                    1/6
                                    ---
doc/{bash.1,bashref.texi}
        - a couple of changes to the descriptions of the ERR trap and its
          effects based on a message from Rob Nagler <nagler@bivio.biz>

                                    1/9
                                    ---
expr.c
        - expassign: invalidate curlval before freeing and NULLing tokstr to
          avoid aliasing issues.  Fixes bug reported by Eduardo A. Bustamante
          López<dualbus@gmail.com>  and Dan Douglas <ormaaj@gmail.com>

braces.c
        - array_concat: don't be so aggressive in trying to short-circuit. We
          can only short-circuit if we have a single-element array where the
          element is an empty string (array[0] == "" array[1] = 0x0).  Existing
          practice requires us to replicate arrays and prefix or append empty
          strings.  Fixes bug reported by Eduardo A. Bustamante López
          <dualbus@gmail.com>

                                   1/11
                                   ----
execute_cmd.c
        - execute_builtin: since mapfile uses evalstring() to run its callbacks
          internally, just like eval, so it needs to handle the case where the
          temp environment given to mapfile persists throughout the entire
          set of callback commands.  This might be a problem with trap also, but
          trap isn't run in the same way.  Fixes bug reported by Dan Douglas
          <ormaaj@gmail.com>

                                   1/13
                                   ----
redir.c
        - redirection_error: before expanding the redirection word (if
          expandable_redirection_filename returns true), disable command
          substitution during expansion.  Fixes bug reported by Dan Douglas
          <ormaaj@gmail.com>

subst.c
        - expand_word_internal: case '\\': if the next character is an IFS
          character, and the expansion occurs within double quotes, and the
          character is not one for which backslash retains its meaning, add
          the (escaped) '\' and the (escaped) character.  Fixes bug reported
          by Dan Douglas <ormaaj@gmail.com>

                                   1/15
                                   ----
builtins/cd.def
        - cd_builtin: make sure call to internal_getopt handles -e option.
          Fixes bug reported by <mashimiao.fnst@cn.fujitsu.com>

                                   1/17
                                   ----
subst.c
        - expand_word_list_internal: make sure tempenv_assign_error is
          initialized to 0

execute_cmd.c
        - execute_simple_command: make sure tempenv_assign_error is reset to 0
          after it's tested to see if an error should force the shell to exit.
          Fixes problem where a the failure of a tempenv assignment preceding
          a non-special builtin `sticks' and causes the next special builtin
          to exit the shell.  From a discussion on bug-bash started by
          douxin <wq-doux@cn.fujitsu.com>

                                   1/20
                                   ----
subst.c
        - parameter_brace_expand_rhs: call stupidly_hack_special_variables
          after assigning with ${param[:]=word} even if IFS is changing.
          Suggested by Dan Douglas <ormaaj@gmail.com> [TENTATIVE, needs work
          on IFS side effects]

command.h
        - W_GLOBEXP (which was unused) is now W_SPLITSPACE (which isn't used
          yet)

{execute_cmd,subst,variables}.c
        - removed all code that mentioned W_GLOBEXP
        - removed mention of gnu_argv_flags and code that set it

                                   1/22
                                   ----
subst.c
        - param_expand: set W_SPLITSPACE if we expand (unquoted) $* and
          IFS is unset or null so we can be sure to split this on spaces
          no matter what happens with IFS later
        - expand_word_internal: note that param_expand returns W_SPLITSPACE
          in the returned word flags and keep track of that state with
          `split_on_spaces'

                                   1/23
                                   ----
subst.c
        - expand_word_internal: if split_on_spaces is non-zero, make sure
          we split `istring' on spaces and return the resultant word.  The
          previous expansions should have quoted spaces in the positional
          parameters where necessary.  Suggested by Dan Douglas
          <ormaaj@gmail.com>

execute_cmd.c
        - execute_command_internal: make sure any subshell forked to run a
          group command or user subshell at the end of a pipeline runs any
          EXIT trap it sets.  Fixes debian bash bug 698411
          http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=698411

subst.c
        - shell_expand_word_list: fix code that creates args for and calls
          make_internal_declare to avoid calling it twice (missing `else'
          in 12/26 change)
        - do_assignment_internal: fix code from 12/26 change to fix problem
          where an existing assoc variable could be converted to an array
          without checking `mkassoc'

                                   1/24
                                   ----
builtins/evalfile.c
        - _evalfile: add missing `close (fd)' calls before returning to
          avoid fd leaks.  Bug and fix from Roman Rakus <rrakus@redhat.com>

                                   1/25
                                   ----
builtins/read.def
        - read_builtin: don't try to play tricks with the top of the unwind-
          protect stack after read gets a SIGALRM; save input_string to new
          memory, run the stack, then restore input_string and assign the
          variables.  Part of fix for bug reported by konsolebox
          <konsolebox@gmail.com>; the rest of the fix is with the changes in
          trap and signal handling and doing away with interrupt_immediately

                                   1/26
                                   ----
redir.c
        - redirection_expand, write_here_string, write_here_document: before
          calling any of the word expansion functions, after setting
          expanding_redir to 1 (which bypasses the temp environment in the
          variable lookup functions), call sv_ifs to reset the cached IFS-
          related variables set by subst.c:setifs().  This ensures that
          redirections will not get any IFS values that are set in the
          temporary environment, as Posix specifies.  Then, after the word
          expansions, after resetting expanding_redir to 0, call sv_ifs
          again to make sure the cached IFS values are set from any
          assignments in the temporary environment.  We force executing_builtin
          to 1 to `fool' the variable lookup functions into using any temp
          environment, then reset it to its old value after sv_ifs returns.
          This is what allows read() to use the (cached) IFS variables set
          in the temp environment. Fixes inconsistency reported by Dan Douglas
          <ormaaj@gmail.com>

                                   1/29
                                   ----
lib/readline/display.c
        - update_line: fix off-by-one error when updating vis_lbreaks array
          in a multibyte locale that occurs when moving multibyte chars from
          one line down to another.  Bug report and fix from Egmont
          Koblinger <egmont@gmail.com>

                                   1/30
                                   ----
configure.ac
        - changed version to 4.3-alpha

redir.c
        - redir_open: handle open returning -1/EINTR, which seems to happen
          a lot with FIFOs and SIGCHLD, and call QUIT to handle other
          signals that can interrupt open(2).  Bug report and initial fix
          from Mike Frysinger <vapier@gentoo.org>

                                   1/31
                                   ----
subst.c
        - parameter_brace_expand: make sure to propagate the PF_ASSIGNRHS flag
          to parameter_brace_expand_word
        - parameter_brace_expand_word: make sure that if the PF_ASSIGNRHS flag
          is set and we are expanding ${a[@]} or ${a[*]} we set quoted to
          include Q_DOUBLE_QUOTES before calling array_value_internal, mirroring
          what we do for $@ and $*.  Fixes inconsistency reported by Dan
          Douglas <ormaaj@gmail.com>

configure.ac
        - use AC_CHECK_TOOL instead of AC_CHECK_PROG to check for ar, since it
          will find $host-prefixed versions of utilities.  Report and fix from
          Mike Frysinger <vapier@gentoo.org>

builtins/setattr.def
        - set_var_attribute: check whether bind_variable (called when the
          variable whose attributes are being modified is found in the temp
          environment) just modified a read-only global variable, and don't
          bother marking the temporary variable for propagation if so.  The
          propagation is superfluous and will result in a strange error
          message

                                    2/2
                                    ---
variables.c
        - initialize_shell_variables: don't try to import function definitions
          with invalid names from the environment if already in posix mode,
          but create them as (invisible) exported variables so they pass
          through the environment.  Print an error message so user knows
          what's wrong.  Fixes bug reported by Tomas Trnka <ttrnka@mail.muni.cz>

                                    2/9
                                    ---

builtins/read.def
        - sigalrm_seen, alrmbuf: now global so the rest of the shell (trap.c)
          can use them
        - sigalrm: just sets flag, no longer longjmps to alrmbuf; problem was
          longjmp without manipulating signal mask, leaving SIGALRM blocked

quit.h
        - move CHECK_ALRM macro here from builtins/read.def so trap.c:
          check_signals() can call it

trap.c
        - check_signals: add call to CHECK_ALRM before QUIT
        - check_signals_and_traps: call check_signals() instead of including
          CHECK_ALRM and QUIT inline.  Integrating check for read builtin's
          SIGALRM (where zread call to check_signals_and_traps can see it)
          fixes problem reported by Mike Frysinger <vapier@gentoo.org>

                                   2/12
                                   ----
lib/glob/xmbsrtowcs.c
        - xdupmbstowcs2: fixed but where end of string was not handled
          correctly, causing loop to go past end of string in a bunch of cases.
          Fixes bug reported by "Dashing" <dashing@hushmail.com>


                                   2/13
                                   ----
builtins/pushd.def
        - popd_builtin: treat any argument that isn't -n or of the form
          [-+][[:digit:]]* as an error.  Fixes problem reported by Bruce
          Korb <bruce.korb@gmail.com>

                                   2/14
                                   ----
configure.ac
        - add check for sig_atomic_t; already a placeholder for it in
          config.h.in

                                   2/15
                                   ----
subst.c
        - do_compound_assignment: don't call assign_compound_array_list with
          a NULL variable in case make_local_xxx_variable returns NULL
          (it will if you try to shadow a readonly or noassign variable).
          Fixes bug reported by Richard Tollerton <rich.tollerton@ni.com>

                                   2/16
                                   ----
variables.c
        - make_local_variable: print error messager if an attempt is made to
          create a local variable shadowing a `noassign' variable.  Previously
          we just silently refused to do it

trap.[ch]
        - get_original_signal: now global so rest of the shell can use it

sig.c
        - initialize_shell_signals: install a signal handler for SIGTERM
          that does nothing except set a sigterm_received flag instead of
          ignoring it with SIG_IGN, as long as SIGTERM is not ignored when
          the shell is started.  Use get_original_signal early to get the
          original handler, since we will do that later anyway
        - set_signal_handler: if installing sigterm_sighandler as the SIGTERM
          handler, make sure to add SA_RESTART flag to make it as close to
          SIG_IGN as possible

sig.h
        - sigterm_sighandler: new extern declaration

quit.h
        - RESET_SIGTERM: set sigterm_receved to 0
        - CHECK_SIGTERM: check sigterm_received; if it's non-zero, treat it
          as a fatal signal and call termsig_handler to exit the shell

jobs.c
        - make_child: call RESET_SIGTERM just before fork() so we can detect
          if the child process received a SIGTERM before it's able to change
          the signal handler back to what it was when the shell started
          (presumably SIG_DFL).  Only has effect if the shell installed
          sigterm_sighandler for SIGTERM, interactive shells that were not
          started with SIG_IGN as the SIGTERM handler
        - make_child: call RESET_SIGTERM in the parent after fork() so the
          rest of the shell won't react to it

execute_cmd.c
        - execute_simple_command: call CHECK_SIGTERM after make_child in child
          to catch SIGTERM received after fork() and before restoring old
          signal handlers
        - execute_disk_command: call CHECK_SIGTERM after make_child in child
          process after restoring old signal handlers and again just before
          calling shell_execve.  Fixes race condition observed by
          Padraig Brady <p@draigbrady.com> when testing with his `timeout'
          program

lib/readline/display.c
        - open_some_spaces: new function, subset of insert_some_chars that just
          opens up a specified number of spaces to be overwritten
        - insert_some_spaces: now just calls to open_some_spaces followed by
          _rl_output_some_chars
        - update_line: use col_temp instead of recalculating it using
          _rl_col_width in the case where we use more columns with fewer bytes
        - update_line: use open_some_spaces and then output the right number
          of chars instead of trying to print new characters then overwrite
          existing characters in two separate calls.  This includes removing
          some dodgy code and making things simpler.  Fix from Egmont
          Koblinger <egmont@gmail.com>
        - use new variable `bytes_to_insert' instead of overloading temp in
          some code blocks (nls - nfd, bytes that comprise the characters
          different in the new line from the old)

                                   2/18
                                   ----
redir.c
        - do_redirection_internal: add undoable redirection for the implicit
          close performed by the <&n- and >&n- redirections.  Fixes bug
          reported by Stephane Chazelas <stephane.chazelas@gmail.com>

                                   2/19
                                   ----
sig.c
        - termsig_handler: an interactive shell killed by SIGHUP and keeping
          command history will try to save the shell history before exiting.
          This is an attempt to preserve the save-history-when-the-terminal-
          window-is-closed behavior

                                   2/21
                                   ----
braces.c
        - brace_expand: if a sequence expansion fails (e.g. because the
          integers overflow), treat that expansion as a simple string, including
          the braces, and try to process any remainder of the string.  The
          remainder may include brace expansions.  Derived from SuSE bug
          804551 example (https://bugzilla.novell.com/show_bug.cgi?id=804551)

                                   2/23
                                   ----
{quit,sig}.h,sig.c
        - sigterm_received declaration now in sig.h; type is sig_atomic_t
        - sigwinch_received type now sig_atomic_t
        - sig.h includes bashtypes.h and <signal.h> if SIG_DFL not defined
          (same logic as trap.h) to pick up sig_atomic_t

unwind_prot.c
        - include sig.h before quit.h (reverse order)

                                   2/27
                                   ----
builtins/shopt.def
        - reset_shopt_options: make sure check_window_size is reset to the
          default from config.h, not unconditionally to 0

jobs.[ch]
        - last_made_pid, last_asynchronous_pid: now volatile.  Change from SuSE

jobs.c
        - wait_for: if we're using sigaction to install a handler for SIGCHLD,
          make sure we specify SA_RESTART

lib/{tilde,readline}/shell.c
        - get_home_dir: instead of looking in the password file every time,
          look once and cache the result

sig.[ch]
        - sigwinch_received, sigterm_received: now `volatile' qualified

sig.c,quit.h
        - interrupt_state,terminating_signal: now sig_atomic_t

                                    3/1
                                    ---
MANIFEST,examples/*
        - removed around 120 files without FSF copyrights; requested by
          Karl Berry in early January

                                    3/2
                                    ---
lib/malloc/malloc.c
        - morecore: only check whether SIGCHLD is trapped if SIGCHLD is defined

doc/bashref.texi
        - Fixed most of the examples in the GNU Parallel section to use better
          shell idioms following complaints on bug-bash; added a couple of
          examples and smoothed out the text

quit.h
        - include "sig.h" for sig_atomic_t

lib/readline/display.c
        - update_line: when inserting one or more characters at the end of
          the display line in a non-multibyte environment, just write from the
          first difference to the end of the line and return. We don't have
          to adjust _rl_last_c_pos.  This is needed to adjust from the old
          two-part copy to a single call to _rl_output_some_chars (change of
          2/16)

                                    3/4
                                    ---
Makefile.in,doc/Makefile.in
        - PACKAGE_TARNAME, docdir: new variables substituted by autoconf
        - OTHER_DOCS,OTHER_INSTALLED_DOCS: new variables with auxiliary
          documentation files to be installed into $(docdir)
        - install: add new rule to install $(OTHER_DOCS)
        - uninstall: add new rule to uninstall $(docdir)/$(OTHER_INSTALLED_DOCS)

doc/bash.1
        - add URL to `POSIX' file in `SEE ALSO' section; put pointer to that
          section in --posix and set -o posix descriptions

examples/
        - removed around 110 examples at the request of the FSF due to copyright
          issues

                                    3/5
                                    ---
builtins/setattr.def
        - readonly: modified help text slightly to make it clearer that
          functions aren't changed or displayed unless the -f option is given.
          Report from <gotmynick@gmail.com>

                                    3/9
                                    ---
include/typemax.h
        - SIZE_MAX: define to 65535 (Posix minimum maximum) if not defined

parse.y
        - include "typemax.h" for possible SIZE_MAX definition, make sure we
          include it after shell.h

{braces,expr}.c
        - include "typemax.h" for possible INTMAX_MIN and INTMAX_MAX definitions

                                   3/10
                                   ----
bashline.c
        - bash_default_completion: make sure completion type of `!' (same as
          TAB but with show-all-if-ambiguous set) and glob-word-completion
          sets rl_filename_completion_desired to 0 so extra backslashes don't
          get inserted by `quoting' the completion.  We can't kill all the
          matches because show-all-if-ambiguous needs them.   Bug report from
          Marcel (Felix) Giannelia <info@skeena.net>

[bash-4.3-alpha frozen]

                                   3/14
                                   ----
general.c
        - trim_pathname: use memmove instead of memcpy since the source and
          destination pathnames may overlap.  Report and fix from Matthew
          Riley <mattdr@google.com>

                                   3/18
                                   ----
configure.ac
        - socklen_t is defined as `unsigned int' if configure can't find it

                                   3/20
                                   ----
lib/readline/complete.c
        - S_ISVTX: since it's not defined on all platforms (Minix), make sure
          its use is protected with #ifdef

                                   3/21
                                   ----
doc/{bash.1,bashref.texi}
        - Added mention of ${!name[@]} and ${!name[*]} expansions to get all
          indices of an array.  Suggested by Jonathan Leffler
          <jonathan.leffler@gmail.com>

                                   3/24
                                   ----
subst.h
        - SD_IGNOREQUOTE: new define for skip_to_delim; if set, means that
          single quotes (for now) will be treated as ordinary characters

subst.c
        - skip_to_delim: handle SD_IGNOREQUOTE. no callers use it for now

                                   3/25
                                   ----
support/config.{guess,sub}
        - updated to versions from autoconf-2.69

                                   3/31
                                   ----
lib/sh/shquote.c
        - sh_single_quote: short-circuit quoting a single "'" instead of
          creating a long string with empty single-quoted strings

parser.h
        - DOLBRACE_QUOTE2: new define, like DOLBRACE_QUOTE, but need to single-
          quote results of $'...' expansion because quote removal will be
          done later.  Right now this is only done for ${word/pat/rep}

parse.y
        - parse_matched_pair: set state to DOLBRACE_QUOTE2 for pattern
          substitution word expansion so we don't treat single quote specially
          in the pattern or replacement string
        - parse_matched_pair: if we're parsing a dollar-brace word expansion
          (${...}) and we're not treating single quote specially within
          double quotes, single-quote the translation of $'...' ansi-c
          escaped strings.  Original report and fix from Eduardo A.
          Bustamante López <dualbus@gmail.com>

subst.c
        - extract_dollar_brace_string: ${word/pat/rep} scanning now sets the
          DOLBRACE_QUOTE2 flag instead of DOLBRACE_QUOTE so we don't treat
          single quotes specially within a double-quoted string

execute_cmd.c
        - fix_assignment_words: skip over assignment statements preceding a
          command word before trying to figure out whether or not assignment
          statements following a possible declaration command should be 
          treated specially.  Fixes bug reported by Dan Douglas
          <ormaaj@gmail.com>

                                    4/4
                                    ---
lib/readline/readline.c
        - _rl_dispatch_subseq: only call _rl_vi_set_last (and check whether
          the key is a text modification command) if the key sequence length
          is 1.  That keeps the arrow keys from setting the last command
          when called in vi command mode.  Fixes bug reported by Ian A.
          Watson <watson_ian_a@lilly.com>

                                    4/6
                                    ---
lib/readline/bind.c
        - rl_parse_and_bind: when parsing a double-quoted string as the value
          of a variable, make sure we skip past the leading double quote.
          Fix from Andreas Schwab <schwab@linux-m68k.org>

variables.c
        - hash_lookup: set new local variable last_table_searched to the table
          a successful lookup appears in; tested in make_local_variable to
          solve the problem below
        - make_local_variable: if we find a variable with the tempenv flag
          set at the same `level' as variable_context', but not found in the
          temporary_env (temp environment preceding the builtin), return it.
          The temp environment preceding the function call has already been
          merged (in execute_function) into the list of variable contexts the
          function sees as shell_variables by the time this is called.  Fixes
          inconsistency pointed out by Dan Douglas <ormaaj@gmail.com>

subst.c
        - expand_arith_string: expanded out contents of expand_string,
          expand_string_internal, expand_string_if_necessary to create a
          WORD_DESC and call call_expand_word_internal() on it directly.
          We don't want process substitution to be performed ( 1<(2) ) should
          mean something different in an arithmetic expression context.
          It doesn't work to just turn on the DQUOTE flag, since that means
          that things like ${x["expression"]} are not expanded correctly.
          Fixes problem pointed out by Dan Douglas <ormaaj@gmail.com>

                                   4/13
                                   ----
subst.c
        - process_substitute: run the EXIT trap before exiting, as other
          shells seem to.  Fixes problem pointed out by Dan Douglas
          <ormaaj@gmail.com>

lib/readline/readline.c
        - readline_internal_setup: call rl_vi_insertion_mode to enter vi
          mode instead of rl_vi_insert_mode to avoid resetting the saved last
          command information.  Posix says that `.' can repeat a command
          that was entered on a previous line so we need to save the info.
          Fixes bug reported by Ian A. Watson <watson_ian_a@lilly.com>

                                   4/14
                                   ----
lib/readline/complete.c
        - rl_completion_matches: make sure xrealloc returns something non-null
          (can happen when interrupted by a signal) before trying to add
          matches to match_list

subst.c
        - array_remove_pattern: return NULL right away if array_variable_part
          returns an invisible variable
        - array_length_reference: handle array_variable_part returning an
          invisible variable
        - get_var_and_type: handle array_variable_part returning an invisible
          variable

                                   4/15
                                   ----
execute_cmd.c
        - execute_command_internal: make sure to run the EXIT trap for group
          commands anywhere in pipelines, not just at the end.  From a point
          raised by Andreas Schwab <schwab@linux-m68k.org>

variables.c
        - bind_int_variable: make sure invisible flag is unset.  Fixes problems
          like "declare -ai a; : $(( a[4]=4 ));"

arrayfunc.c
        - array_variable_part: return variable even if invisible flag set,
          callers must handle invisible vars

                                   4/18
                                   ----
builtins/set.def
        - unset_builtin: if -n flag given, call unset_nameref instead of
          unset_variable

variables.c
        - find_variable_nameref: print warning message if nameref circular
          reference detected, return NULL and let caller deal with it

builtins/declare.def
        - declare_builtin: only disallow global references at this point if
          we are at the global scope

                                   5/16
                                   ----
configure.ac
        - update release status to beta

                                   5/23
                                   ----
trap.c
        - run_pending_traps: save and restore pipeline around calls to
          evalstring() in case we get a trap while running a trap. Have to
          figure out the recursive running traps issue elsewhere.  Fixes
          bug reported by Roman Rakus <rrakus@redhat.com>
        - run_pending_traps: make sure to set running_trap to the appropriate
          signal value when running a trap command
        - run_pending_traps: short-circuit immediately if running_trap set
          when invoked.  Could change this later to only skip if it would
          run the same trap as currently being run (running_trap == sig + 1)

configure.ac
        - add warning if bison not found

lib/readline/doc/rltech.texi
        - new section with an example program illustrating the callback
          interface. Suggested by Peng Yu <pengyu.ut@gmail.com>

examples/loadables/Makefile.in
        - remove references to `cut' and `getconf', which were removed in
          early March

                                   5/28
                                   ----
lib/sh/pathphys.c
        - sh_realpath: correct inverted two arguments to call to sh_makepath.
          Report and fix from Julien Thomas <jthomas@exosec.fr>

                                    6/7
                                    ---
execute_cmd.c
        - executing_line_number: the else clauses that are conditional on
          various options being defined can simply be if clauses -- they are
          mutually exclusive and all have `return' in the body.  Fixes bug
          reported by Flavio Medeiros <flaviomotamedeiros@gmail.com>

                                   6/25
                                   ----
lib/readline/readline.c
        - readline_internal_setup: only sent the meta-key enable string to the
          terminal if we've been told to use one and the terminal has been
          successfully initialized (RL_ISSTATE (RL_STATE_TERMPREPPED) != 0).
          Suggested by Dan Mick <dan.mick@inktank.com>

lib/readline/signals.c
        - _rl_signal_handler: call any defined signal hook after calling
          rl_resize_terminal when handling a SIGWINCH.  We already have called
          the original SIGWINCH handler but will not be resending the signal
          to ourselves

                                   6/27
                                   ----
lib/readline/doc/history.3, doc/bash.1
        - fix description of the `$' modifier to note that it expands to the
          last *word*, which is not always the last argument.  Report from
          ariyetz@gmail.com via gnu.org RT

                                   6/29
                                   ----
lib/glob/smatch.c
        - glob_asciiranges: initialize to value of GLOBASCII_DEFAULT instead
          of 0 (0 if not defined)

configure.ac,config.h.in
        - --enable-glob-asciiranges-default: new option, controls the value of
          GLOBASCII_DEFAULT; use it to turn globasciiranges shopt option on
          by default

doc/bashref.texi
        - document new --enable-glob-asciiranges-default configure option

variables.c
        - assign_in_env: implement += value appending semantics for assignments
          preceding command names

                                    7/4
                                    ---
expr.c
        - set lasttok = NUM in all of the functions that result in a number,
          even if it's a boolean, to avoid errors with constructs like
          1 * x = 1, which should be an asignment error.  Fixes problem
          pointed out by Dan Douglas <ormaaj@gmail.com>

parse.y
        - decode_prompt_string: don't bother to call strcpy if
          polite_directory_format returns its argument unchanged.  It's not
          necessary and Mac OS X 10.9 aborts because of a supposed overlapping
          string copy.  Bug and fix from simon@hitzemann.org

subst.c
        - parameter_brace_find_indir: new function, code from
          parameter_brace_expand_indir that looks up the indirectly-referenced
          variable, but does not expand it
        - parameter_brace_expand_indir: call parameter_brace_find_indir to
          look up indirected variable reference
        - get_var_and_type: call parameter_brace_find_indir if it looks like we
          are trying to manipulate an indirect variable reference like
          ${!b%%foo}.  This makes a difference if !b references an array
          variable.  Bug report from Dan Douglas <ormaaj@gmail.com>

                                    7/6
                                    ---
lib/sh/casemod.c
        - sh_modcase: make sure argument passed to is_basic is <= UCHAR_MAX,
          since cval can convert something to a wchar_t greater than UCHAR_MAX.
          Fixes bug reported by Tomasz Tomasik <scx.mail@gmail.com>

                                    7/8
                                    ---
lib/readline/history.c
        - add_history_time: if history_length == 0, referencing history_length
          - 1 will result in an array bounds error, so make history_length be
          at least 1 before going on.  Fixes bug reported by Geng Sheng Liu
          <gsliu.tju@gmail.com>

builtins/setattr.def
        - show_func_attributes: display definition (if NODEFS argument is 0) and
          attributes for a particular function; used by `declare -fp name'

builtins/declare.def
        - declare_internal: call show_func_attributes if -f supplied with -p.
          Fixes inconsistency observed by Linda Walsh <bash@tlinx.org>

builtins/common.h
        - new extern declaration for show_func_attributes

builtins/read.def
        - read_builtin: check the first supplied variable name for validity
          before attempting to read any input, since we know we will have to
          at least use that one.  Don't check any other names yet.  Suggested
          by jidanni@jidanni.org

                                   7/10
                                   ----
redir.c
        - do_redirection_internal: when closing a file descriptor with
          r_close_this ([n]<&-) count close errors as redirection errors if
          errno ends up as EIO or ENOSPC.  Originally reported back in April
          2012 by Andrey Zaitsev <jstcdr@gmail.com>

                                   7/11
                                   ----
redir.c
        - do_redirection_internal: before calling check_bash_input, make sure
          that we don't call check_bash_input for an asynchronous process that
          is replacing stdin with something else. The seek backwards affects
          the parent process as well, since parents and children share the
          file pointer. Fixes problem originally reported in March 2013 by
          Martin Jackson <mjackson220.list@gmail.com>

                                   7/13
                                   ----
doc/{bash.1,bashref.texi}
        - slight change to add a description of `shopt -o' suggested by Bruce
          Korb <bruce.korb@gmail.com>

                                   7/19
                                   ----
lib/readline/histfile.c
        - history_do_write: if close returns < 0, make sure we restore the
          backup history file and return a non-zero value
        - history_truncate_file: if write or close return < 0, make sure we
          return a non-zero value

[bash-4.3-beta frozen]

                                   7/21
                                   ----
lib/readline/isearch.c
        - rl_display_search: now takes an entire search context flags word as
          the second argument, instead of just reverse flag; changed callers
        - rl_display_search: if the search has failed, add `failed ' to the
          beginning of the search prompt
        - _rl_isearch_dispatch: if the search has failed, display the entire
          search string with an indication that the search failed but with the
          last matching line.  Suggested by jidanni@jidanni.org

command.h
        - W_ASSIGNINT: new word flag; used internally for make_internal_declare
          and set by fix_assignment_words

execute_cmd.c
        - fix_assignment_words: set W_ASSIGNINT if compound assignment and -i
          given as option.  We don't do anything with the value yet

subst.c
        - shell_expand_word_list: rework the way the option list that is
          passed to make_internal_declare is created

                                    8/1
                                    ---
doc/{bash.1,bashref.texi}
        - minor changes to description of $! based on a report from Chris
          Down <chris@chrisdown.name>

arrayfunc.c
        - assign_array_element_internal: before trying to get an array's max
          index to process a negative subscript, make sure the array exists.
          Bug report from Geir Hauge <geir.hauge@gmail.com>

                                    8/2
                                    ---
arrayfunc.c
        - assign_array_element_internal: before using array_max_index() when
          processing a negative subscript, make sure the variable is an array.
          if it's not, use 0 as array_max_index assuming it's a string.
          Fixes bug report from Geir Hauge <geir.hauge@gmail.com>

                                    8/3
                                    ---
Makefile.in
        - pcomplete.o: add dependency on $(DEFDIR)/builtext.h. Suggested by
          Curtis Doty <curtis@greenkey.net>

                                    8/5
                                    ---
lib/glob/sm_loop.c
        - strcompare: short-circuit and return FNM_NOMATCH if the lengths of the
          pattern and string (pe - p  and se - s, respectively) are not equal
        - strcompare: don't bother trying to set *pe or *se to '\0' if that's
          what they already are.  Fixes bug reported by Geir Hauge
          <geir.hauge@gmail.com>

                                    8/6
                                    ---
doc/{bash.1,bashref.texi},builtins/hash.def,lib/readline/doc/rluser.texi
        - minor typo changes from Geir Hauge <geir.hauge@gmail.com>

bultins/help.def
        - show_longdoc: avoid trying to translate the empty string because it
          often translates to some boilerplate about the project and
          translation.  Report and fix from Geir Hauge <geir.hauge@gmail.com>

                                    8/8
                                    ---
builtins/help.def
        - help_builtin: try two passes through the list of help topics for each
          argument: one doing exact string matching and one, if the first pass
          fails to find a match, doing string prefix matching like previous
          versions.  This prevents `help read' from matching both `read' and
          `readonly', but allows `help r' to match everything beginning with
          `r'.  Inspired by report from Geir Hauge <geir.hauge@gmail.com>

                                   8/13
                                   ----
builtins/fc.def
        - fc_builtin,fc_gethnum: calculate `real' end of the history list and
          use it if -0 is specified as the beginning or end of the history
          range to list.  Doesn't work for fc -e or fc -s by design.  Feature
          requested by Mike Fied <micfied@gmail.com>

                                   8/16
                                   ----
trap.c
        - _run_trap_internal: use {save,restore}_parser_state instead of
          {save,restore}_token_state. It's more comprehensive

                                   8/23
                                   ----
doc/bash.1
        - disown: remove repeated text.  Report and fix from Thomas Hood
          <jdthood@gmail.com>

                                   8/25
                                   ----
lib/readline/rltty.c
        - set_special_char: fix prototype (last arg is rl_command_func_t *)

sig.c
        - set_signal_handler: return oact.sa_handler only if sigaction
          succeeds; if it doesn't, return SIG_DFL (reasonable default).  From
          https://bugzilla.redhat.com/show_bug.cgi?id=911404

bashline.c
        - attempt_shell_completion: fix to skip assignment statements preceding
          command name even if there are no programmable completions defined.
          From https://bugzilla.redhat.com/show_bug.cgi?id=994659
        - attempt_shell_completion: if still completing command word following
          assignment statements, do command completion even if programmable
          completion defined for partial command name entered so far

                                   8/26
                                   ----
pcomplete.c
        - pcomp_filename_completion_function: make sure rl_filename_dequoting_function
          is non-NULL before trying to call it.  Bug and fix from
          Andreas Schwab <schwab@linux-m68k.org>

bashline.c
        - bash_command_name_stat_hook: if *name is not something we're going
          to look up in $PATH (absolute_program(*name) != 0), just call the
          usual bash_filename_stat_hook and return those results.  This makes
          completions like $PWD/exam[TAB] add a trailing slash

                                    9/2
                                    ---
builtins/read.def
        - read_builtin: before comparing what we read to the delim, make sure
          we are not supposed to be ignoring the delimiter (read -N).  We
          set the delim to -1, but it's possible to read a character whose
          int value ends up being between -1 and -128.  Fixes bug
          reported by Stephane Chazelas <stephane.chazelas@gmail.com>

doc/{bash.1,bashref.texi}
        - word splitting: crib some language from Posix to make it clear that
          characters in IFS are treated as field *terminators*, not field
          *separators*.  Addresses issue raised by DJ Mills
          <danielmills1@gmail.com>

lib/readline/{util.c,rldefs.h}
        - _rl_stricmp,_rl_strnicmp: now take const char * string arguments;
          changed prototype declarations

                                    9/5
                                    ---
doc/{bash.1,bashref.texi}
        - [[: modify description of pattern matching to make it clear that the
          match is performed as if the extglob option were enabled.  From Red
          Hat bug https://bugzilla.redhat.com/show_bug.cgi?id=1002078

                                   9/12
                                   ----
lib/readline/isearch.c
        - _rl_isearch_dispatch: if we read an ESC and it's supposed to
          terminate the search, make sure we check for typeahead with
          _rl_pushed_input_available, since installing a hook function causes
          typeahead to be collected in `ibuffer' (input.c).  If there is any,
          make sure we still use the ESC as a prefix character.  Bug and fix
          from Mike Miller <mtmiller@ieee.org>

                                   9/16
                                   ----
builtins/{caller,cd,kill,pushd,wait}.def
        - builtin_usage(): make sure call to this sets return status to
          EX_USAGE

                                   9/18
                                   ----
terminal.c
        - rl_change_environment: new application-settable variable; if non-
          zero (the default), readline will modify LINES and COLUMNS in the
          environment when it handles SIGWINCH
        - _rl_get_screen_size: if rl_change_environment is non-zero, use setenv
          to modify LINES and COLUMNS environment variables

readline.h
        - rl_change_environment: new extern declaration for applications

                                   9/22
                                   ----
configure.ac
        - relstatus: bumped version to bash-4.3-beta2

                                   9/24
                                   ----

lib/readline/readline.c
        - bind_arrow_keys_internal: added more key bindings for the numeric key
          pad arrow keys on mingw32.  Patch from Pierre Muller
          <pierre.muller@ics-cnrs.unistra.fr>

                                   10/19
                                   -----

bashline.c
        - maybe_restore_tilde: version of restore_tilde that honors `direxpand';
          calls restore_tilde after saving directory expansion hook if
          necessary.  Report from Andreas Schwab <schwab@linux-m68k.org>

builtins/cd.def
        - -@: new option, allows cd to use `extended attributes' present in
          NFSv4, ZFS; idea taken from ksh93.  Attributes associated with a
          file are presented as a directory containing the attributes as
          individual files.  Original patch contributed by Cedric Blancher
          <cedric.blancher@gmail.com>

                                   10/20
                                   -----
aclocal.m4
        - BASH_CHECK_MULTIBYTE: check for wcwidth being broken with unicode
          combining characters needs a value to use when cross-compiling.
          Bug report from Bert Sutherland <bertsutherland@gmail.com>

doc/{bash.1,bashref.texi}
        - document new -@ option to cd builtin

                                   10/28
                                   -----
lib/glob/{{gmisc,glob}.c,glob.h}
        - extglob_pattern renamed to extglob_pattern_p, declared in glob.h

subst.c
        - expand_word_internal: typo fix: case to fix " $@\ " bug in bash-4.2
          had a typo (& isexp instead of &&)

                                   10/29
                                   -----
input.c
        - getc_with_restart: make sure local_index and local_bufused are
          reset to 0 before returning EOF, in case we are running an interactive
          shell without line editing and ignoreeof is set.  Report and fix
          from Yong Zhang <yong.zhang@windriver.com>

lib/readline/search.c
        - _rl_nsearch_init: take out extra third argument to rl_message; it
          only matches prototype (and maybe format) in cases where
          PREFER_STDARG and USE_VARARGS are both undefined, which is rare

                                   10/31
                                   -----
subst.c
        - process_substitute: when opening the named pipe in the child, open
          without O_NONBLOCK to avoid race conditions.  Happens often on AIX.
          Bug report and fix from Michael Haubenwallner
          <michael.haubenwallner@salomon.at>

builtins/ulimit.def
        - RLIMIT_NTHR: if RLIMIT_PTHREAD is not defined, but RLIMIT_NTHR is,
          use RLIMIT_NTHR (NetBSD)

                                   11/5
                                   ----
locale.c
        - set_default_locale_vars,set_locale_var: if TEXTDOMAINDIR has been
          set, and default_dir has a non-null value, call bindtextdomain(3)
          when TEXTDOMAIN is assigned a value.  Fixes problem reported by
          Michael Arlt <qwertologe@googlemail.com>

                                   11/6
                                   ----
builtins/cd.def
        - cdxattr: only create synthetic pathname in `buf' if NDIRP argument
          is non-null
        - change_to_directory: if we have specified -@ and cdxattr returns
          failure, fail immediately.  Fixes bug reported by Joshuah Hurst
          <joshhurst@gmail.com>

                                   11/12
                                   -----
redir.c
        - print_redirection: change r_err_and_out (&>) and its append form,
          r_append_err_and_out (&>>) cases to separate redirection operator
          from filename by a space, in case we have a process substitution.
          Fixes bug reported by admn ombres <admn.ombres@gmail.com>

                                   11/15
                                   -----
execute_cmd.c
        - execute_simple_command: don't close process substitution fds until
          we are finished executing any current shell function.  Partial fix
          for bug reported by John Dawson <john.dawson@gmail.com>

support/shobj-conf
        - add support for Darwin 13 (Mac OS X 10.9, Mavericks).  Based on a
          report by Ludwig Schwardt <ludwig.schwardt@gmail.com>

                                   11/20
                                   -----
[bash-4.3-rc1 frozen]

                                   11/24
                                   -----
builtins/printf.def
        - bind_printf_variable: make sure that the variable assigned to is
          no longer marked as invisible. Fixes bug reported by NBaH
          <nbah@sfr.fr>

                                   11/28
                                   -----
jobs.c
        - delete_old_job: fix off-by-one error in job index in call to
          internal_warning. Bug report from Peter Cordes <peter@cordes.ca>

                                   11/30
                                   -----
doc/bashref.texi
        - add string to description of special parameters with name of
          special parameter prefixed by a $, so you can search for $#,
          for instance

                                   12/2
                                   ----
lib/readline/{histexpand.c
        - get_history_event: account for current_history() possibly returning
          NULL. Report and fix from Pankaj Sharma <pankaj.s01@samsung.com>


                                   12/11
                                   -----

lib/readline/parse-colors.c
        - get_funky_string: don't call abort if we see something we can't
          parse; just return an error
        - _rl_parse_colors: if we encounter an error while parsing $LS_COLORS
          we need to leave _rl_color_ext_list as NULL after freeing its
          elements, then turn off _rl_colored_stats. Report and fix from Martin
          Wesdorp <mwesdorp@casema.nl>

                                   12/13
                                   -----

lib/readline/parse-colors.c
        - _rl_parse_colors: if we encounter an unrecognized prefix, throw an
          error but try to recover and go on to the next specification

variables.c
        - make_local_variable: for new variables this function creates, set
          the att_invisible attribute.  All callers from declare_internal.
          Indirectly, this is a fix for bug with `declare -n var; var=foo;'
          reported by Pierre Gaston <pierre.gaston@gmail.com>
        - bind_variable: if assigning to nameref variable that doesn't have
          a value yet (e.g., with `declare -n var; var=foo'), don't try to
          use the unset name. Fixes a segfault reported by Pierre Gaston
          <pierre.gaston@gmail.com>

execute_cmd.c
        - execute_command_internal: make sure last_command_exit_value is set
          to 0 after any command executed in the background.  Fixes bug
          reported by Martin Kealey <martin@kurahaupo.gen.nz>

                                   12/17
                                   -----
support/config.{guess,sub}
        - updated to latest versions from git

                                   12/19
                                   -----
parse.y
        - struct STRING_SAVER: now has a new `flags' element, to identify the
          caller: alias expansion, double-paren parsing, or parse_and_execute
        - push_string: now sets flags to PSH_ALIAS if `ap' argument is non-NULL
        - push_string: now doesn't attempt to call strlen on a NULL string to
          set shell_input_line_size
        - parser_expanding_alias, parser_save_alias, parser_restore_alias: new
          functions to provide an external interface to push_string and
          pop_string; parser_save_alias sets flags element to PSH_SOURCE (could
          be renamed PSH_EXTERN someday)
        - shell_getc: when yy_getc returns '\0', instead of just testing
          whether the pushed_string_list is not-empty before popping it, don't
          pop if if the saved string has flags PSH_SOURCE, indicating that
          parse_and_execute set it before setting bash_input to the string.
          We should continue reading to the end of that string before popping
          back to a potential alias. Partial solution for the problem of aliases
          with embedded newlines containing `.' commands being executed out of
          order reported by Andrew Martin <andrew.martin@gmail.com>
        - shell_getc: when yy_getc returns '\0' and there is a saved string of
          type PSH_SOURCE, restart the read without popping the string stack
          if we have not read to the end of bash_input.location.string.  Rest
          of fix for out-of-order execution problem

externs.h
        - parser_expanding_alias, parser_save_alias, parser_restore_alias: new
          extern function declarations

builtins/evalstring.c
        - pe_prologue: if the parser is expanding an alias, make sure to add
          an unwind-protect to restore the alias; undoes the work that will be
          performed by parse_and_execute/parse_string
        - parse_and_execute,parse_string: after calling push_stream to save
          bash_input, check whether or not the parser is currently expanding
          an alias (parser_expanding_alias() != 0). If it is, we want to save
          that string in the pushed_string_list, which we do with
          parser_save_alias.

                                   12/23
                                   -----
execute_cmd.c
        - execute_for_command: make sure to set line_number before expanding
          the word list, so expansion errors have the right line number.
          From a report from Ben Okopnik <ben@okopnik.com>

expr.c
        - exp2: save token pointer before calling readtok(), arrange to use
          saved token pointer when printing error token on a division by 0
          error

                                   12/27
                                   -----
lib/readline/display.c
        - rl_redisplay: when calculating effects of invisible characters in a
          prompt that is split across physical screen lines to set the indices
          of linebreaks, don't bother testing local_prompt_prefix (line 751).
          That prefix doesn't matter when calculating prompt visible and
          invisible characters.  Fixes problem reported by Jinesh Choksi
          <jinesh@onelittlehope.com>

Makefile.in
        - install: make sure to use $(DESTDIR) when installing OTHER_DOCS.
          Report and fix from Matthias Klose <doko@debian.org>

doc/texinfo.tex
        - updated to version of 2013-09-11

                                   12/28
                                   -----
lib/readline/undo.c
        - rl_do_undo: if we are undoing from a history entry (rl_undo_list ==
          current_history()->data), make sure the change to rl_line_buffer is
          reflected in the history entry. We use the guts of
          rl_maybe_replace_line to do the work.  Fixes problem reported by
          gregrwm <backuppc-users@whitleymott.net>

                                   12/30
                                   -----
sig.c
        - sigint_sighandler: if we get a SIGINT (and this signal handler is
          installed) while the wait builtin is running, note that we received
          it in the same way as jobs.c:wait_sigint_handler and return.  The
          various wait_for functions will look for that with CHECK_WAIT_INTR.
          This fixes the wait builtin not being interruptible in an interactive
          job control shell

                                   12/31
                                   -----
trap.c
        - set_signal_hard_ignored: rename set_signal_ignored to this, since it
          both sets original_signals[sig] and sets the HARD_IGNORE flag
        - set_signal_ignored: new function, now just sets original_signals[sig]

trap.h
        - set_signal_hard_ignored: new external declaration

sig.c
        - initialize_terminating_signals: call set_signal_hard_ignored instead
          of set_signal_ignored for signals with disposition SIG_IGN when the
          shell starts

execute_cmd.c
        - setup_async_signals: make sure we get the original dispositions for
          SIGINT and SIGQUIT before starting the subshell, and don't call
          set_signal_ignored  because that sets original_signals[sig].  If we
          don't, subsequent attempts to reset handling using trap will fail
          because it thinks the original dispositions were SIG_IGN. Posix
          interpretation 751 (http://austingroupbugs.net/view.php?id=751)

                                 1/2/2014
                                 --------
lib/sh/stringvec.c
        - strvec_mcreate, strvec_mresize: versions of create and resize that
          use malloc and realloc, respectively, instead of xmalloc/xrealloc

braces.c
        - expand_amble,mkseq: use strvec_mcreate/strvec_mresize so we can
          catch and handle memory allocation failures instead of aborting
          with the xmalloc/xrealloc interface

lib/sh/strdup.c
        - strdup replacement function for ancient systems that don't have it

lib/sh/itos.c
        - mitos: new function, itos that uses strdup instead of savestring

externs.h
        - strvec_mcreate/strvec_mresize: new extern declarations
        - mitos: new extern declaration

configure.ac
        - bash version moved to 4.3-rc2

                                    1/6
                                    ---
doc/bash.1,lib/readline/doc/{rluser.texi,readline.3}
        - separate the description of what happens when readline reads the
          tty EOF character from the description of delete-char, leaving a
          note in the delete-char description about common binding for ^D.
          From suggestion by Parke <parke.nexus@gmail.com>

lib/readline/doc/{version.texi,history.3,*.texi}
        - updated email addresses and copyright dates

                                    1/7
                                    ---
variables.c
        - delete_var: new function, just removes a variable from a hash table
          and frees it, without doing anything else
        - make_variable_value: if we are trying to assign to a nameref variable,
          return NULL if the value is null or the empty string or not a valid
          identifier

variables.h
        - delete_var: new extern declaration

subst.h
        - ASS_NAMEREF: new define for assignments, means assigning to a nameref
          variable

builtins/declare.def
        - declare_internal: if we are creating and assigning to a nameref
          variable, make sure the value is a valid variable name (checks done
          by make_variable_value via bind_variable_value) and display an
          error message, deleting the variable we just created, if it is not.
          Fixes bug reported by Peggy Russell <prusselltechgroup@gmail.com>

                                    1/9
                                    ---
builtins/declare.def
        - declare_internal: turning on nameref attribute for an existing
          variable turns off -i/-l/-u/-c attributes (essentially the ones
          that cause evaluation at assignment time) for ksh93 compat

builtins/setattr.def
        - show_name_attributes: if asked to display attributes and values for
          a nameref variable, don't follow the nameref chain to the end. More
          ksh93 compat

                                   1/10
                                   ----
trap.c
        - _run_trap_internal: use {save,restore}_parser_state instead of
          {save,restore}_token_state, like in run_pending_traps(); don't
          need to save and restore last_command_exit_value as a result
        - _run_trap_internal: call {save,restore}_pipeline like in
          run_pending_traps()
        - run_pending_traps: since we no longer run traps in a signal handler
          context, do not block and unblock the trapped signal while the
          trap is executing
        - run_pending_traps: allow recursive invocations (basically, running
          traps from a trap handler) with only a warning if the shell is
          compiled in debug mode.  If a caller doesn't want this to happen,
          it should test running_trap > 0. signal_in_progress (sig) only works
          for the signals the shell handles specially

bashline.c
        - bash_event_hook: make sure we clean up readline if interrupt_state
          is set, not only when SIGINT is not trapped.  check_signals_and_traps
          will call check_signals, which calls QUIT, which will longjmp back
          to top_level, running the interrupt trap along the way.  Fixes the
          problem of signal handlers being reset out from under readline, and
          not being set properly the next time readline is called, because
          signals_set_flag is still set to 1.  XXX - might need to do this
          for other signals too?

                                   1/11
                                   ----
subst.h
        - SD_GLOB: new define for skip_to_delim; means we are scanning a
          glob pattern.

subst.c
        - skip_to_delim: if flags include SD_GLOB, assume we are scanning a
          glob pattern.  Currently only used to skip bracket expressions
          which may contain one of the delimiters

                                   1/12
                                   ----
subst.c
        - parameter_brace_expand: when expanding $@ as part of substring
          expansion, pattern substitution, or case modification, don't turn
          on the QUOTED_NULL flag.  The code that constructs the word to be
          returned from expand_word_internal expects a different code path
          when $@ is being expanded.  Fixes bug reported by Theodoros
          V. Kalamatianos <thkala@gmail.com>

                                   1/19
                                   ----
subst.c
        - list_dequote_escapes: new function; analogue of list_quote_escapes

pathexp.c
        - quote_string_for_globbing: fix case where unescaped ^A is last char
          in string; need to pass it through unaltered instead of turning it
          into a bare backslash
        - quote_string_for_globbing: when quoting for regexp matching in [[,
          don't treat backslash as a quote character; quote the backslash as
          any other character.  Part of investigation into reports from
          Eduardo A. Bustamante López <dualbus@gmail.com>

                                   1/25
                                   ----
builtins/gen-helpfiles.c
        - write_helpfiles: add prototype
        - make sure to #undef xmalloc/xfree/xrealloc/free if USING_BASH_MALLOC
          is defined. the code does not use them, and we don't link against
          xmalloc.o. Report from Linda Walsh <bash@tlinx.org>

Makefile.in
        - variables.o: add dependency on builtins/builtext.h; helps with
          parallel builds.  Report from Linda Walsh <bash@tlinx.org>

support/shobj-conf
        - darwin: combine the stanzas into one that will not require them to
          be updated on each Mac OS X release.  Report and fix from Max Horn
          <max@quendi.de>

                                   1/27
                                   ----
support/shobj-conf
        - darwin: changed the install_name embedded into the shared library
          to contain only the major version number, not the minor one. The
          idea is that the minor versions should all be API/ABI compatible,
          and it is better to link automatically with the latest one.  Idea
          from Max Horn <max@quendi.de>

                                   1/29
                                   ----
[bash-4.3-rc2 released]

                                   1/30
                                   ----
lib/readline/readline.h
        - rl_clear_history, rl_free_keymap: add extern declarations.  Report
          from Hiroo Hayashi <hiroo.hayashi@computer.org>

general.c
        - include trap.h for any_signals_trapped() prototype

lib/sh/unicode.c
        - include <stdio.h> for sprintf prototype

                                   1/31
                                   ----
execute_cmd.c
        - execute_simple_command: only posix-mode shells should exit on an
          assignment failure in the temporary environment preceding a special
          builtin. This is what the documentation and code comments have
          always said
        - execute_simple_command: make sure redirection errors, word expansion
          errors, and assignment errors to Posix special builtins cause a
          non-interactive posix mode shell to exit.  Previously the shell
          would not exit if the failed special builtin was on the LHS of ||
          or &&

pathexp.c
        - quote_string_for_globbing: when quoting a regular expression
          (QGLOB_REGEXP), allow an unquoted backslash to pass through
          unaltered. Don't use it as a quote character or quote it.  More
          investigation from 1/24 and report by Mike Frysinger
          <vapier@gentoo.org>
        - quote_string_for_globbing: when quoting a regular expression
          (QGLOB_REGEXP), turn CTLESC CTLESC into CTLESC without adding a
          backslash to quote it. We should not have to quote it because it is
          not a character special to EREs. More investigation from 1/24

lib/glob/glob.c
        - glob_testdir: now takes a second flags argument (currently unused);
          changed prototype and callers

                                    2/1
                                    ---
lib/glob/glob.c
        - glob_testdir: if flags argument includes GX_ALLDIRS (globstar), use
          lstat so we skip symlinks when traversing the directory tree.
          Originally reported by Chris Down <chris@chrisdown.name>

                                    2/2
                                    ---
lib/readline/undo.c
        - rl_do_undo: make sure CUR is non-zero before dereferencing it to
          check cur->data against rl_undo_list.  Report and fix from
          Andreas Schwab <schwab@linux-m68k.org>

doc/{bash.1,bashref.texi}
        - added slight clarifying language to the description of $*,
          describing what happens when the expansion is not within double
          quotes

                                    2/4
                                    ---
test.c
        - unary_test: add code to -v case so that it interprets `bare' array
          references (foo[1]) and returns true if that index has a value

                                    2/5
                                    ---
trap.c
        - restore_default_signal: fix SIGCHLD special case for SIG_TRAPPED flag
          off but SIG_INPROGRESS mode set and handler IMPOSSIBLE_TRAP_HANDLER;
          continue with resetting handler in this case. maybe_set_sigchld_trap
          will check these things before resetting sigchld trap from
          run_sigchld_trap.  Fixes (apparently long-standing?) problem reported
          by Alexandru Damian <alexandru.damian@intel.com>

                                    2/6
                                    ---
lib/sh/strtrans.c
        - ansic_quote: fixed a bug when copying a printable character that
          consumes more than one byte; byte counter was not being incremented.
          Bug report from jidanni@jidanni.org

                                    2/7
                                    ---
input.c
        - getc_with_restart: if read(2) returns -1/EINTR and interrupt_state or
          terminating_signal is set (which means QUIT; will longjmp out of this
          function), make sure the local buffer variables are zeroed out to
          avoid reading past the end of the buffer on the next call.  Bug report
          from Dan Jacobson <jidanni@jidanni.org>

                                    2/9
                                    ---
bashline.c
        - command_word_completion_function: if a directory in $PATH contains
          quote characters, we need to quote them before passing the candidate
          path to rl_filename_completion_function, which performs dequoting on
          the pathname it's passed.  Fixes bug reported by Ilyushkin Nikita
          <ilyushkeane@gmail.com>

                                   2/11
                                   ----
parse.y
        - xparse_dolparen: save and restore shell_eof_token around call to
          parse_string, intead of just leaving it set to ')'
        - shell_getc: when -v is set, only print the command line when
          shell_eof_token is 0, so we don't print it multiple times when
          recursively entering the parser to parse $(...) commands.  Fixes
          bug reported by Greg Wooledge <wooledg@eeg.ccf.org>

[changed release status to 4.3-release]

                                   2/13
                                   ----
lib/sh/strtrans.c
        - ansic_quote: handle case where mbrtowc reports that the multibyte
          sequence is incomplete or invalid.  Fixes bug reported by
          Eduardo A. Bustamante López <dualbus@gmail.com>

                                   2/14
                                   ----
variables.c
        - find_variable_nameref_context: fix a problem that caused the loop
          to go one context too close to the global context.  In some cases,
          simple variable assignment would set a variable in the global
          context instead of a local context.  Bug report from
          Geir Hauge <geir.hauge@gmail.com>

                                   2/26
                                   ----
[bash-4.3 released]

                                   2/27
                                   ----
aclocal.m4
        - broken wcwidth check: fix typo reported by David Michael
          <fedora.dm0@gmail.com>

                                   2/28
                                   ----
support/bashbug.sh
        - add ${BUGADDR} to error message printed if sending mail fails

trap.c
        - _run_trap_internal: don't call {save,restore}_pipeline if running
          DEBUG trap; run_debug_trap calls them itself.  Fixes bug reported
          by Moe Tunes <moetunes42@gmail.com>

test.c
        - unary_test: fix 'R' case by using find_variable_noref instead of
          find_variable
        - test_unop: add back missing 'R' case.  Fixes bug reported by
          NBaH <nbah@sfr.fr>

                                    3/2
                                    ---
jobs.c
        - end_job_control: if job control is active, we changed the terminal's
          process group, so make sure we restore it.  Fixes bug reported by
          Eduardo A. Bustamante López <dualbus@gmail.com>

                                    3/7
                                    ---
pcomplete.c
        - pcomp_curtxt: new variable, holds the original text to be completed
          as passed to the programmable completion code
        - pcomp_filename_completion_function: if we are running compgen
          (presumably in a shell function completion) and performing readline
          completion, check the word being completed.  If it's not empty, but
          the original word passed to the programmable completion code is an
          empty string (""), call a dequoting function if one is available.
          This compensates for an assumption in bash-completion.  Reported by
          Albert Shih <Albert.Shih@obspm.fr>

lib/readline/readline.c
        - _rl_dispatch_subseq: when deciding whether or not to set vi mode's
          idea of the last command, use whether or not the dispatching keymap
          is vi_movement_keymap instead of the key sequence length.  The `c',
          `d', and `y' commands all take motion commands as `arguments' and
          will produce key sequences longer than 1 character.  The arrow keys
          will end up dispatching out of a different keymap, so the test will
          prevent arrow keys from setting the last command (the problem in
          bash-4.2). Bug report from Daan van Rossum <daan@flash.uchicago.edu>

lib/readline/vi_mode.c
        - _rl_vi_motion_command: convenience function to test whether a key is
          a vi-mode motion command

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

parse.y
        - parse_matched_pair: we should not skip processing single quotes in
          posix mode if dolbrace_state == DOLBRACE_QUOTE2 (pattern
          substitution).  Fixes bug reported by David Sines
          <dave.gma@googlemail.com>

                                   3/10
                                   ----
lib/readline/readline.c
        - _rl_dispatch_callback: treat a return value of -1 as the end of
          a command dispatch sequence if the current context doesn't
          indicate that we're reading a multi-key sequence
          ((cxt->flags & KSEQ_SUBSEQ) == 0).  Turn off the multikey flag
          and free the context chain in this case.  Fixes one bug reported
          by Felix Yan <felixonmars@gmail.com> to bug-readline list
        - _rl_dispatch_callback: treat a return value of > 0 the same as 0
          and return from the function, since only values < 0 cause us to
          simulate recursion.  Rest of fix for bug tracked down by
          Anatol Pomozov <anatol.pomozov@gmail.com>

                                   3/11
                                   ----

execute_cmd.c
        - execute_in_subshell: if a longjmp occurs, set result to
          EXECUTION_FAILURE only if last_command_exit_value == EXECUTION_SUCCESS;
          use value of last_command_exit_value otherwise.  Fixes cosmetic
          issue reported by Dennis Lambe Jr. <malsyned@malsyned.net>

doc/bash.1
        - shell-kill-word and shell-backward-kill-word should be documented
          as unbound by default.  Report from Oliver Hartley
          <ohartley@talktalk.net>

trap.c
        - run_pending_traps: save value of $? before running trap commands in
          trap_saved_exit_value, like run_exit_trap
        - _run_trap_internal: save value of $? before running trap commands in
          trap_saved_exit_value, like run_exit_trap

builtins/common.c
        - get_exitstat: when running `return' in a trap action, and it is not
          supplied an argument, use the saved exit status in
          trap_saved_exit_value.  Fixes Posix problem reported by
          Eduardo A. Bustamante López <dualbus@gmail.com>

                                   3/13
                                   ----
lib/sh/shquote.c
        - sh_contains_quotes: new function, returns true if a given string
          contains any of the shell quote characters (single quote, double
          quote, or backslash)

externs.h
        - sh_contains_quotes: new extern declaration

pcomplete.c
        - pcomp_filename_completion_function: more changes for the benefit of
          bash-completion: if the argument is not the same as the original
          argument passed to the programmable completion code (pcomp_curtxt),
          and we are being run by compgen as part of a completion, dequote the
          argument as bash-completion expects.  Fix for the complete-word-
          with-quoted-special-chars problem with bash-completion

                                   3/17
                                   ----
execute_cmd.c
        - execute_intern_function: when in posix mode, make defining a function
          with the same name as a special builtin a fatal error only when the
          shell is not interactive. Interactive shells display an error
          message and go on.  From a discussion with Doug McIlroy
          <doug@cs.dartmouth.edu>

                                   3/18
                                   ----
arrayfunc.c
        - assign_compound_array_list: when using expand_assignment_string_to_string
          to expand the value in a ( [x]=y ) compound assignment, make sure
          that we convert 0x0 to "" when expanding [x]= so it doesn't appear as
          if the index is unset.  Fixes bug reported by Geir Hauge
          <geir.hauge@gmail.com>

builtins/common.c
        - get_exitstat: update fix of 3/11 to allow the DEBUG trap to use the
          current value of $? instead of the value it had before the trap
          action was run.  This is one reason the DEBUG trap exists, and
          extended debug mode uses it.  Might want to do this only in Posix
          mode

doc/{bash.1,bashref.texi}
        - return: add language cribbed from Posix saying what happens when
          return is run without an argument from a trap, including the DEBUG
          trap exception

                                   3/19
                                   ----
lib/glob/gmisc.c
        - extglob_pattern_p: make sure ?(patlist) is flagged as an extglob
          pattern

lib/glob/glob.c
        - extglob_skipname: rewrite to handle patterns that begin but do not
          end with an extglob pattern; change test for easy case and loop
          through patterns accordingly.  Fixes problem with matching filenames
          with a leading dot reported by Stephane Chazelas
          <stephane.chazelas@gmail.com>
        - wextglob_skipname: make analogous changes

                                   3/20
                                   ----
Makefile.in
        - pass -DDEBUG down to builds in readline and history directories

lib/readline/util.c
        - _rl_trace and related functions are now only compiled in if DEBUG
          is defined

lib/readline/Makefile.in
        - substitute @DEBUG@ and pass -DDEBUG, if necessary, to compilation
          in LOCAL_CFLAGS

                                   3/21
                                   ----
parse.y
        - shell_getc: when checking whether or not to reallocate
          shell_input_line to add trailing newline, don't try to subtract from
          shell_input_line_size.  size_t is unsigned, so if its value is less
          than 3 (like, say, 2), size-3 is a very large number and the string
          will not be reallocated.  Use len+3 > size instead of len > size-3.
          Fixes bug reported in
          https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1295467

                                   3/27
                                   ----
lib/readline/display.c
        - _rl_clean_up_for_exit: don't bother to call _rl_move_vert to whatever
          readline thinks the last displayed line is if it's 0.  Two reasons: a
          minor optimization, and it protects against unwanted moving if this
          function is called twice, as it is when ^C is pressed.  Fixes bug
          reported by Egmont Koblinger <egmont@gmail.com>

                                   3/28
                                   ----
bashline.c
        - invalid_completion: new function, used to identify attempts to
          complete words that are syntax errors
        - attempt_shell_completion: if invalid_completion returns true for a
          word in a command position, punt on all completions.  Fixes cosmetic
          issue reported by Uwe Storbeck <uwe@ibr.ch>
        - attempt_shell_completion: add clause so that in_command_position
          remains set to 1 for an empty word following a command separator like
          (, &, or |

lib/readline/kill.c
        - rl_yank, rl_yank_nth_arg_internal: don't return -1 from bindable
          functions, return 1 instead

lib/readline/text.c
        - rl_rubout, _rl_rubout_char, rl_delete, rl_change_case,
          rl_transpose_chars, rl_transpose_words, _rl_set_mark_at_pos,
          rl_exchange_point_and_mark, _rl_insert_next, _rl_char_search,
          _rl_char_search_internal:
          don't return -1 from bindable functions, return 1 instead

lib/readline/vi_mode.c
        - rl_vi_end_word, rl_vi_rubout, rl_vi_delete, rl_vi_char_search,
          rl_vi_match, _rl_vi_set_mark, _rl_vi_goto_mark:
          don't return -1 from bindable functions, return 1 instead

lib/readline/macro.c
        - rl_start_kbd_macro, rl_end_kbd_macro:
          don't return -1 from bindable functions, return 1 instead

builtins/setattr.def
        - set_var_attribute: honor setting of no_invisible_vars when setting
          att_invisible on a variable
        - include "../flags.h" for no_invisible_vars

builtins/declare.def
        - declare_internal: honor setting of no_invisible_vars when setting
          att_invisible on a variable
        - include "../flags.h" for no_invisible_vars

Makefile.in,builtins/Makefile.in
        - make sure declare.o and setattr.o depend on flags.h

execute_cmd.c
        - decpoint: new function, returns locale's decimal point or `.' default
        - mkfmt: use decpoint() to get decimal point instead of unconditionally
          using `.'.  Fixes bug reported by Andrey Tataranovich
          <tataranovich@gmail.com> in debian bug 741669

                                   4/10
                                   ----
lib/readline/rltypedefs.h
        - add back old Function/VFunction/etc typedefs, since other packages
          (python, samba) use them. Mark as deprecated using gcc and clang
          attributes.  Report and fix from Max Horn <max@quendi.de>

                                   4/14
                                   ----
jobs.c
        - run_sigchld_trap: unwind-protect value of this_shell_builtin, since
          it matters in some cases whether or not we are running `wait' or
          `eval'.  Fixes bug reported by Eduardo A. Bustamante López
          <dualbus@gmail.com>

                                   4/18
                                   ----
shell.h
        - sh_parser_state_t: add `need_here_doc' flags member, since
          xparse_dolparen (via parse_command) sets it to 0

parse.y
        - gather_here_documents: make sure need_here_doc is > 0, since we
          don't want to just decrement it forever if it ends up < 0. Partial
          fix for bug reported by Jared Yanovich <slovichon@gmail.com>
        - {save,restore}_parser_state: save and restore need_here_doc flag.
          Rest of fix for bug reported by Jared Yanovich <slovichon@gmail.com>

                                   4/19
                                   ----
subst.c
        - cond_expand_word: since we are not supposed to be performing word
          splitting here, set expand_no_split_dollar_star to 1 in addition to
          setting W_NOSPLIT2
        - expand_word_internal: if we have a case where we have an unquoted
          $@ but we are in a case where we don't want to split (W_NOSPLIT2),
          make sure we return a list consisting of a single word with the
          arguments separated by spaces and don't do word splitting.  Fixes
          bug reported by Greg Wooledge <wooledg@eeg.ccf.org> from an IRC
          discussion

builtins/hash.def
        - print_portable_hash_info: single-quote pathnames and hashed filenames
          that contain shell metacharacters.  Fixes bug reported by
          <g1pi@libero.it> in debian bash bug #739853

                                   4/20
                                   ----
lib/readline/display.c
        - When using horizontal scrolling, the redisplay code erases too much
          of the line containing successful results, so make sure we only
          erase to the end of the line after making sure we move the cursor
          to the end.  Fixes bug reported by <Trond.Endrestol@ximalas.info>

                                   4/23
                                   ----
{bashhist,bashline}.c
builtins{bind,help,type}.def
lib/glob/glob.c, lib/intl/{loadmsgcat,localealias}.c,lib/sh/mktime.c
        - fixes to memory leaks uncovered by coverity scan

                                   4/24
                                   ----
{bashhist,subst,redir,assoc,jobs,array,trap}.c
lib/intl/l10flist.c
builtins/complete.def
        - fixes to memory leaks and other resource usage problems uncovered by
          coverity scan

redir.c
        - do_redirection_internal: if dup2 fails (presumably because of a
          resource limit), close the file descriptor we opened before returning
          error

                                   4/25
                                   ----
config-top.h
        - DEFAULT_BASHRC: new define with the name of the default shell
          startup file

bashline.c
        - bash_directory_completion_matches: don't dequote the directory name.
          If rl_completion_found_quote is non-zero, readline will dequote the
          filename itself.  Fixes bug reported by Clark Wang
          <dearvoid@gmail.com>

                                   4/27
                                   ----
subst.c
        - parameter_brace_expand_rhs: if parameter_brace_find_indir returns
          NULL or "", or if it returns something that is not a valid identifier,
          report an error and return &expand_wdesc_error so the error can
          propagate up.  Fixes bug reported by Andre Holzhey
          <andre.holzhey@gmx.de>

                                   4/29
                                   ----
subst.c
        - parameter_brace_substring: don't short-circuit right away if the
          value is NULL but we are looking at the positional parameters.  Part
          of fix for bug reported by Pierre Gaston <pierre.gaston@gmail.com>
        - pos_params: if there are no positional parameters, only short-circuit
          if we are looking for $1 and above.  Rest of fix for bug reported
          by Pierre Gaston <pierre.gaston@gmail.com>

subst.h
        - SD_NOPROCSUB: new flag for skip_to_delim, means to not allow any
          process subsitutions (should not have overloaded SD_NOSKIPCMD)

subst.c
        - skip_to_delim: honor SD_NOPROCSUB flag

make_cmd.c
        - make_arith_for_expr: set W_NOPROCSUB flag in the created word
        - make_arith_for_command: set SD_NOPROCSUB in the flags argument to
          skip_to_delim so we don't treat <( or >( as a process substitution
          (we won't evaluate them in eval_arith_for_expr anyway).  Fixes
          bug reported by Pierre Gaston <pierre.gaston@gmail.com>

                                    5/1
                                    ---
lib/glob/gmisc.c
        - glob_dirscan: new function, takes a pattern and a directory separator
          argument and advances the pattern to the last occurrence of the
          separator. Like strrchr, but understands extended glob patterns and
          uses glob_patscan to skip over them

lib/glob/glob.c
        - extglob_skipname: if the extended globbing pattern is invalid, don't
          skip the name
        - glob_filename: if there is a slash in the pattern to be matched, and
          extglob is enabled, use glob_dirscan to find the real last occurrence
          of `/' to avoid being confused by slashes in extglob patterns.  Fix
          for bug reported by Pierre Gaston <pierre.gaston@gmail.com>

                                    5/6
                                    ---
variables.c
        - make_local_variable: only set the att_invisible attribute if
          no_invisible_vars isn't set
        - find_variable_for_assignment: new function, intended to be called by
          code that eventually wants to assign a value to the variable; will not
          skip invisible variables; currently identical to find_variable
        - find_variable_no_invisible: new function, finds the first visible
          instance of variable with a given name in the variable context chain;
          eventually will be used to replace find_variable; separate right now
          for testing

variables.h
        - find_variable_for_assignment: extern declaration
        - find_variable_no_invisible: extern declaration

                                    5/7
                                    ---
variables.c
        - make_local_variable: don't clear `invisible' attribute if we are
          returning an existing local variable at the right context.  Let the
          upper layers do that. Fixes bug reported by Dan Douglas
          <ormaaj@gmail.com>

                                    5/8
                                    ---
lib/readline/input.c
        - rl_getc: call RL_CHECK_SIGNALS if a read(2) is interrupted (-1/EINTR)
          by SIGALRM or SIGVTALRM (placeholder for non-keyboard-generated
          signals of interest)

builtins/read.def
        - edit_line: call bashline_set_event_hook and
          bashline_reset_event_hook around call to readline(), so the right
          signal handling happens
        - read_builtin: make sure we add an unwind_protect call to
          bashline_reset_event_hook.  These changes fix bug reported in
          https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1317476

bashline.c
        - bash_event_hook: make sure we clean up the readline state by calling
          rl_cleanup_after_signal if sigalrm_seen is non-zero.  The read builtin
          sets this when it times out

                                   5/12
                                   ----
doc/{bash.1,bashref.texi}
        - clarify language to make it clear that changing attributes of a
          nameref variable (e.g., export), actually changes the attributes of
          the referenced variable.  Fixes omission noted by Jeff Haemer
          <jeffrey.haemer@gmail.com>

arrayfunc.c
        - bind_array_var_internal: make sure ENTRY no longer has invisible
          attribute before returning.  Fixes bug reported by Geir Hauge
          <geir.hauge@gmail.com>

                                   5/22
                                   ----
execute_cmd.c
        - shell_execve: if execve fails and we return 127 or 126, make sure to
          set last_command_exit_value if a call to file_error or report_error
          causes the shell to exit.  This ensures that the shell exits with
          the right value.

                                    6/6
                                    ---
shell.c
        - drop_priv_mode: print an error message on setuid() failure, optionally
          exit if errno == EAGAIN, as it can be on Linux when RLIMIT_NPROC for
          the target user is exceeded.

config-top.h
        - EXIT_ON_SETUID_FAILURE: new settable define, will cause the shell to
          exit if setuid fails with errno == EAGAIN

                                   6/10
                                   ----
parse.y
        - time_command_acceptable: fix so time is accepted everywhere the
          grammar is looking for a `compound_list'.  Fixes bug reported by
          Dale Worley <worley@alum.mit.edu>

                                   6/12
                                   ----
subst.c
        - clear_fifo_list: new function, clears FDs associated with open pipes
          in current FIFO list without closing the file descriptors.  Can
          possibly be used when shell_execve fails and the shell jumps back
          to top_level and we don't want the shell to close the open FIFOs
          each time through the read-execute loop.  Bug reported by Harald
          Koenig <koenig@tat.physik.uni-tuebingen.de>


                                   6/16
                                   ----
builtins/shopt.def
        - compat42: make sure the `compat42' option sets the correct variable
          for compatibility level.  Fixes bug reported by Ondrej Oprala
          <ooprala@redhat.com>

support/bashbug.sh
        - fix typo when echoing $USAGE.  Report from Shantanu Kulkarni
          <djbware@shantanukulkarni.org>

execute_cmd.c
        - shell_execve: before longjmp back to subshell_top_level, clear out the
          FIFO fd list by calling clear_fifo_list so the FDs (which we inherited
          from our parent) aren't closed every time through the read-eval loop.
          Fix for bug reported by Harald Koenig <koenig@tat.physik.uni-tuebingen.de>

                                   6/18
                                   ----
subst.c
        - extract_process_subst: add additional argument: xflags, allow callers to
          pass flags like extract_command_subst
        - extract_process_subst: call xparse_dolparen like command substitution
          to avoid problems when parsing commands constructs with embedded open
          parens.  Fixes bug reported by Tim Friske <me@timfriske.com>

subst.h
        - extract_process_subst: modified prototype for extern declaration

                                   6/19
                                   ----
execute_cmd.c
        - execute_pipeline: if running with lastpipe enabled, make sure that we
          check whether or not the job id is valid using INVALID_JOB before
          calling job_exit_status. the jobs list can get frozen and unfrozen in
          the presence of nested pipelines and loops and wait_for can clear a
          job table entry.  Fixes bug reported by <scorp.dev.null@gmail.com>

jobs.c
        - freeze_jobs_list: now returns old value of jobs_list_frozen; unused at
          current time

jobs.h
        - freeze_jobs_list: change return value

                                   6/20
                                   ----
lib/glob/smatch.c
        - MEMCHR: single-byte and wide character defines (memchr/wmemchr)

lib/glob/sm_loop.c
        - GMATCH: when the wildcards are the last element of the pattern, make
          sure they do not match a string containing a `/' if FNM_PATHNAME is
          set in FLAGS
        - GMATCH: when recursively calling GMATCH after we see a `*', don't
          try to consume the rest of the pattern with `*' if FNM_PATHNAME is
          set in FLAGS, just consume up to the next slash and then see whether
          or not the rest of the pattern matches.  Fixes bug reported by Ian
          Kelling <ian@iankelling.org>
        - GMATCH: when processing `*' in the pattern, after skipping consecutive
          wildcards, if we hit a literal `/' in the pattern and we're looking
          for a pathname, skip characters in the string until we find a `/'
          (no slash means the match fails), and try to match the rest of the
          pattern against the portion of the string after the next `/'.  Picked
          up from gnulib/glibc

pathexp.c
        - split_ignorespec: since split_ignorespec gets globbing patterns,
          make sure we call skip_to_delim with the SD_GLOB flag so delimiters
          that occur within bracket expressions don't delimit the pattern.
          Fixes problem with [[:digit:]] in GLOBIGNORE reported by Ian Kelling
          <ian@iankelling.org>

unwind_prot.c
        - unwind_protect_tag_on_stack: new function, returns 1 if unwind-protect
          frame corresponding to `tag' argument is on unwind-protect stack

unwind_prot.h
        - unwind_protect_tag_on_stack: extern declaration

                                   6/30
                                   ----
lib/readline/misc.c
        - _rl_revert_all_lines: set entry->data to 0 after assigning it to
          rl_undo_list to avoid pointer aliasing problems that would result
          in entry->line being freed by an undo.  The subsequent free would
          be a double free.  Report and fix from Jared Yanovich
          <slovichon@gmail.com>

subst.c
        - command_substitute: other shells do not appear to inherit the -v
          option when reading and executing command substitutions.  Reported
          by Ondrej Oprala <ooprala@redhat.com>

                                    7/1
                                    ---
config-top.h
        - CHECKHASH_DEFAULT: new define that supplies the default value for
          check_hashed_filenames (`checkhash' shopt option); still 0 by default

findcmd.c
        - check_hashed_filenames: initialize using CHECKHASH_DEFAULT

lib/readline/histexpand.c
        - history_expand: double quotes can inhibit recognition of the history
          comment character if history_quotes_inhibit_expansion is non-zero

lib/readline/doc/{history.3,hstech.texi}
        - history_quotes_inhibit_expansion: expand definition to note that it
          inhibits scanning for the history comment character as well; correct
          typo to make it clear that it only works on double-quoted strings

lib/sh/zgetline.c
        - add new fourth argument: DELIM, allows delimiter to be something
          other than newline (if DELIM != '\n', UNBUFFERED_READ should be
          non-zero)
        - UNBUFFERED_READ is now fifth argument
        - check character against DELIM rather than strictly newline

externs.h
        - zgetline: change function prototype for extern declaration

builtins/mapfile.def
        - mapfile: change calling sequence for zgetline calls
        - mapfile_builtin: new -d option: DELIM, like in read builtin
        - mapfile_builtin: pass `delim' to mapfile() as new argument; default
          to '\n' unless -d option supplied
        - mapfile: take new DELIM argument, pass to zgetline
        - mapfile: if DELIM != '\n', set unbuffered_read to 1

doc/{bash.1,bashref.texi}
        - mapfile: document new `-d DELIM' option

                                    7/5
                                    ---
lib/readline/histfile.c
        - history_truncate_file: if there is an error writing the truncated
          history list back to the history file, use the same strategy as
          history_do_write: create a backup file, rename the history file to
          the backup file, and restore the original history file from the
          backup file name if the write or the close fails.  Suggestion from
          Chen Gang <gang.chen.5i5j@gmail.com> to bug-readline

execute_cmd.c
        - evalnest, evalnest_max: new variables establishing maximum number of
          recursive `eval' calls; current max is 4096
        - execute_builtin: unwind-protect value of evalnest around calls to
          eval builtin. Suggested by Oliver Morais <oliver.morais@gmail.com>
        - {initialize_subshell,execute_subshell_builtin_or_function}: reset
          evalnest to 0 in a subshell

builtins/setattr.def
        - show_name_attributes: show a variable's attributes even if it's
          invisible (don't show any value since it has none). This means that
          declare -p var will display VAR's attributes even when var marked
          as invisible.  Feature request from Peggy Russell
          <prusselltechgroup@gmail.com>
        - show_var_attributes: don't print assignment if array or assoc
          attribute is set but variable marked as invisible

tests/array.right
        - special note: changed all declare -a output tests because the shell
          will no longer print out values for invisible array variables. This
          is a change, but one for correctness:

                declare -a foo='()'
          and
                declare -a foo
          are not equivalent

                                   7/22
                                   ----
subst.c
        - parameter_brace_expand: after calling parameter_brace_expand_indir,
          turn off the W_ARRAYIND flag in the word it returns, because there
          is no way for it to return the index that should be used, and the
          rest of the function assumes that IND is valid if W_ARRAYIND is set.
          Fixes bug reported by Corentin Peuvrel <cpeuvrel@pom-monitoring.com>

                                    8/2
                                    ---
parse.y
        - read_token_word: if we read a character that will end a command
          substitution, don't skip over quoted newlines when we read an
          additional character to figure out whether it's a two-character
          token. This lets the higher layers deal with quoted newlines after
          the command substitution. Fixes bug reported by EmanueL Czirai
          <amanual@riseup.net>

                                   8/11
                                   ----
execute_cmd.c
        - execute_pipeline: check whether lastpipe_jid corresponds to a valid
          job before calling append_process, for the same reason as fix from
          6/19.  Fixes bug reported by <lolilolicon@gmail.com>

                                   8/12
                                   ----
lib/sh/unicode.c
        - stub_charset: use strncpy instead of strcpy because we are copying
          into a local fixed-length buffer.  Fixes vulnerability reported by
          <romerox.adrian@gmail.com>

execute_cmd.c
        - execute_pipeline: if we don't call append_process, call
          wait_for_single_pid to get the status of `lastpid', since that will
          check the status of already-reaped processes.  Fixes spurious error
          message about non-existent process from fix of 8/11

                                   8/15
                                   ----
jobs.c
        - running_in_background: new variable, keeps track of whether or not we
          are running in the background (not perfect yet)
        - initialize_job_control: even if we are not turning on job control,
          get the terminal pgrp so we can use it later
        - {set_job_control,initialize_job_control}: set running_in_background
          to 1 if terminal pgrp != shell pgrp
        - {stop_pipeline,make_child,wait_for}: if we are running in the
          background, don't mess with the terminal's process group; assume that
          the parent shell will do that.  Fixes bug reported by Greg Wooledge
          <wooledg@eeg.ccf.org>

shell.c
        - shell_reinitialize: reset running_in_background back to 0

                                   8/24
                                   ----
execute_cmd.c
        - {execute_connection,execute_command_internal}: make sure that
          asynchronous commands always set $? to 0 and are not affected by the
          command's exit status being inverted using `!'.  Fixes bug reported
          by Vincent Lefevre <vincent@vinc17.net>

lib/readline/display.c
        - rl_message: call vsnprintf with full msg_bufsiz, since it counts 
          one fewer than the buffer length passed as an argument.  Bug report
          and fix from Dylan Cali <calid1984@gmail.com>

                                   8/26
                                   ----
builtins/evalstring.c
        - evalstring: if CURRENT_TOKEN == yacc_EOF, reset it to newline.  This
          is instead of calling reset_parser(); that might still be needed.
          Fixes bug with eval and a subsequent statement ending with EOF
          reported by <jim.avera@gmail.org>

pcomplete.c
        - filter_stringlist: when extglob is on, a leading ! in the filter
          pattern should be left alone when it introduces a !(pat) pattern;
          otherwise it messes up the pattern.  Fixes bug reported by David
          Korn <dgkorn@gmail.com>

                                   8/27
                                   ----
doc/{bash.1,bashref.texi}
        - clarify the behavior of bash when given the -c option, since $0 is
          technically not a positional parameter.  Bug reported by Stephane
          Chazelas <stephane.chazelas@gmail.com>

                                   8/28
                                   ----
lib/readline/history.c
        - add_history: use history_max_entries (if history is stifled) or
          DEFAULT_HISTORY_INITIAL_SIZE if not (new define, defaults to 502)
          to size the initial allocation of the history array.  Assumption
          is that this will reduce the number of allocations

                                   8/29
                                   ----
execute_command.c:
        - sourcenest, sourcenest_max: new variables used to track level of
          sourced files and (maybe) one day catch infinite source recursion
        - execute_builtin: if current source level exceeds sourcenest_max,
          trigger an error and jump back to the top level
        - {initialize_subshell,execute_subshell_builtin_or_function}: reset
          sourcenest to 0 in a subshell

                                    9/2
                                    ---
variables.c
        - bind_variable: if a nameref expands to an array reference, make
          sure that assign_array_element gets called (maybe even
          recursively) instead of bind_variable_internal, so invalid variable
          names (like arr[0]) don't get created.  Fixes bug reported by
          <lolilolicon@gmail.com>

                                    9/3
                                    ---
execute_cmd.c
        - evalnest_max,sourcenest_max: initialize from EVALNEST_MAX and
          SOURCENEST_MAX, respectively.  Feature suggested by
          <bogun.dmitriy@gmail.com>

config-top.h
        - define EVALNEST_MAX and SOURCENEST_MAX to 0

                                    9/6
                                    ---
bashline.c
        - find_cmd_start: fix to (crudely) deal with >| token; even though
          skip_to_delim finds `|' as a delimiter, we call it again and use
          what the second call finds.  Fixes bug reported by Dan Jacobson
          <jidanni@jidanni.org>

findcmd.c
        - find_in_path_element: if in posix mode, do not expand a literal
          tilde in a $PATH element

doc/bashref.texi
        - add change to tilde expansion in $PATH elements to posix mode
          description

builtins/common.h
        - ISHELP: new define for builtins that do their own option parsing
          and don't use internal_getopt(); checks whether argument is --help
        - CHECK_HELPOPT: convenience define to help builtins that do their
          own option parsing to check for --help with one line of code
        - CASE_HELPOPT: convenience define to help builtins that use
          internal_getopt() check for --help with one line of code

builtins/help.def
        - builtin_help: new function, prints out --help output for current
          builtin

builtins/{kill,let,pushd}.def
        - add CHECK_HELPOPT to builtins that use ISOPTION; call builtin_help
          and return EX_USAGE (kill/let/pushd/popd/dirs)

builtins/{caller,fg_bg}.def
        - use CHECK_HELPOPT to recognize --help, since these builtins perform
          checks that can cause them to return before calling no_options
          (caller/fg/bg)

builtins/{exit,return}.def
        - use CHECK_HELPOPT to recognize --help before calling get_exitstat()
          (return/exit/logout)

builtins/{break,shift}.def
        - use CHECK_HELPOPT to recognize --help before any other checks
          (break/continue/shift)

builtins/bashgetopt.h
        - GETOPT_EOF: convenience define
        - GETOPT_HELP: new define, to indicate internal_getopt saw --help

builtins/bashgetopt.c
        - internal_getopt: return GETOPT_HELP for --help

builtins/common.c
        - no_options: recognize --help, call builtin_help and return 2
          (builtin/eval/source/./times)

builtins/command.def
        - use CASE_HELPOPT() to handle --help after calling internal_getopt()
          (command)

builtins/{colon,echo,test}.def
        - do not recognize --help (:/true/false/echo/test)

                                    9/8
                                    ---
sig.c
        - termsig_sighandler: if readline is active now, set the bashline event
          hook. Old code just set it for interactive shells.  Part of fix for
          bug reported by <mickael9@gmail.com>

bashline.c
        - bash_event_hook: call rl_cleanup_after_signal if terminating_signal
          is non-zero, since check_signals_and_traps() will cause the shell to
          exit if it is and we want to clean up the readline state first.  Rest
          of fix for bug reported by <mickael9@gmail.com>

                                    9/9
                                    ---
jobs.c
        - waitchld: when running the wait builtin in posix mode, with a trap set
          on SIGCHLD, use queue_sigchld_trap instead of trap_handler (SIGCHLD),
          otherwise you will lose SIGCHLDs when children_exited > 1.  Fixes bug
          reported by <crispusfairbairn@gmail.com>

builtins/read.def
        - read_builtin: if we are changing the tty settings, call
          initialize_terminating_signals so we have a chance to catch all
          terminating signals and potentially clean up the terminal before
          exiting
        - read_builtin: tty_modified: new variable, set to 1 if we change the
          terminal attributes and have to call ttyrestore() to restore them
        - if one of the `reads' returns -1/EINTR due to a terminating signal,
          and we have modified the terminal, call ttyrestore before calling
          CHECK_TERMSIG
        - ttyrestore: set tty_modified to 0 when called

                                   9/10
                                   ----
builtins/read.def
        - termsave: now global to file so other functions can use it
        - read_tty_cleanup: if tty_modified is non-zero, call ttycleanup to
          restore old terminal settings and turn off tty_modified

sig.c
        - termsig_handler: call read_tty_cleanup if currently executing read
          builtin; it does the right thing.  Final piece of fix for bug reported
          by Jan Rome <jan.rome@gmail.com>

                                   9/11
                                   ----
general.c
        - printable_filename: general function to return a printable
          representation of a string (presumed to be a filename)

general.h
        - extern declaration for printable_filename

execute_cmd.c
        - execute_disk_command: use printable_filename

builtins/{bind,cd,enable,hash,source}.def
        - use printable_filename as appropriate when printing error messages.
          From a suggestion by Vincent Lefevre <vincent@vinc17.net>

builtins/bind.def
        - use CASE_HELPOPT() to handle --help after calling internal_getopt()
          (bind)

                                   9/12
                                   ----
builtins/common.h
        - SEVAL_FUNCDEF: new flag for parse_and_execute; it means that we only
          accept a single function definition command, as when we are importing
          functions from the environment
        - SEVAL_ONECMD: new flag for parse_and_execute; for future use

builtins/evalstring.c
        - parse_and_execute: if the SEVAL_FUNCDEF flag is set, disallow anything
          but a function definition command

variables.c
        - initialize_shell_variables: don't allow functions with invalid names
          to be imported from the environment, even though we still allow them
          to be defined
        - initialize_shell_variables: when importing function definitions from
          the environment, call parse_and_execute with the SEVAL_FUNCDEF flag
          to force the command to be just a function definition

subst.c
        - param_expand: when expanding a $name variable expansion, make sure that
          the variable is visible and set before following the nameref chain
        - param_expand: when expanding a $name variable expansion and following the
          nameref chain, make sure the resulting variable is visible and set
          before using it

                                   9/13
                                   ----
variables.c
        - initialize_shell_variables: when importing function definitions from
          environment, use SEVAL_ONECMD flag for parse_and_execute.  Part of
          CVE-2014-6271

builtins/evalstring.c
        - parse_and_execute: if SEVAL_ONECMD flag set, return immediately after
          calling execute_command_internal.  Final piece for fix for bug
          reported by Stephane Chazelas <stephane.chazelas@gmail.com>.  Part of
          CVE-2014-6271

                                   9/24
                                   ----
parse.y
        - reset_parser: reset eol_ungetc_lookahead to 0 here, since we don't want
          shell_getc returning it on the next call.  Fixes problem reported by
          Tavis Ormandy <taviso@cmpxchg8b.com> and Michal Zalewski
          <lcamtuf@coredump.cx>.  Potentially part of CVE-2014-6271; fix for
          CVE-2014-7169

                                   9/25
                                   ----
parse.y
        - push_heredoc: new function, pushes a here-doc redirection onto
          redir_stack handling overflow of redir_stack. Exits on overflow.
          Original fix from Florian Weimer <fweimer@redhat.com>.  Fix for
          CVE-2014-7186
        - change straight assignments to redir_stack to call push_redir
        - add one to size of word_lineno stack to avoid off-by-one error
          below in read_token_word. Overflow just results in line numbers
          being wrong.  Fix for CVE-2014-7187

                                   9/27
                                   ----
{execute_cmd,trap}.c
        - changes to make minimal-config builds work again, mostly missing
          #ifdefs for optional features

builtins/common.c
        - builtin_help: dummy version to be included if HELP_BUILTIN not
          defined, for minimal-config builds

variables.c
        - initialize_shell_variables: incorporated patches from Florian
          Weimer <fweimer@redhat.com> to change the strings bash looks
          for when importing shell functions from the environment.  It
          adds a prefix (BASH_FUNC_) and a suffix (%%) to the name to
          mark it as having been created by bash as an exported function.
          Fix for remote attacks part of CVE-2014-6271 and CVE-2014-7169
        - mk_env_string: takes new argument, indicating whether we are
          constructing a function
        - mk_env_string: encodes function names as described above, so
          initialize_shell_variables can find them

                                   9/28
                                   ----
copy_cmd.c
        - copy_redirects: before calling savestring on here_doc_eof, make
          sure it's not NULL (it could have been the result of a here
          document delimited by EOF or EOS).  Fixes bug reported by
          Michal Zalewski <lcamtuf@coredump.cx>.  Fix for CVE-2014-6277

make_cmd.c
        - make_redirection: initialize here_doc_eof member to NULL.  Rest of
          fix for CVE-2014-6277

                                   9/29
                                   ----
parse.y
        - current_input_line_state: return a sh_input_line_state_t containing
          the current shell_input_line and its index and size variables

shell.h
        - current_input_line_state: extern declaration

builtins/evalstring.c
        - parse_and_execute: call reset_parser() before returning if
          SEVAL_ONECMD set.  Fixes bug reported by Michal Zalewski
          <lcamtuf@coredump.cx> and designated CVE-2014-6278
        - parse_and_execute: if we parse a function definition when
          SEVAL_FUNCDEF is set, but don't consume the entire passed string,
          throw an error, reset the parser, and return.  Part of fix for
          CVE-2014-6278
        - parse_and_execute: if parsing the shell function definition when
          SEVAL_FUNCDEF is set transforms the function name (e.g., if it
          begins with a newline or begins or ends with whitespace), throw
          an error, reset the parser, and return.  Fixes bug reported by
          Eric Kobrin <ekobrin@akamai.com>

                                   10/2
                                   ----
jobs.c
        - bgp_prune: don't do anything if bgpids.npid == 0 or
          bgpids.list == NULL.  This can happen if something gets run before
          the job control framework is initialized.  Bug report from
          <mancha1@zoho.com>

                                   10/3
                                   ----
parse.y
        - xparse_dolparen: don't set token_to_read to newline after calling
          parse_string() and cleaning up when the shell is not interactive.  This
          makes the parser think it's ok to read new commands even if it's not in
          a state where that should be possible.  Underlying fix for bug reported
          by Michal Zalewski <lcamtuf@coredump.cx> and designated CVE-6278
        - parser_remaining_input: new function, returns the portion of
          shell_input_line that hasn't yet been read
        - current_input_line_state: removed

shell.h
        - parser_remaining_input: extern declaration
        - current_input_line_state: removed

builtins/evalstring.c
        - parse_and_execute: change code that checks whether parse_command has
          consumed the entire passed string when SEVAL_FUNCDEF is used to use
          parser_remaining_input instead of messing around with (new)
          current_input_line_state.  Part of fix for CVE-2014-6278

variables.c
        - initialize_shell_variables: if we don't call parse_and_execute, free
          the temporary string, since parse_and_execute won't.  Report and fix
          from Eric Kobrin <ekobrin@akamai.com>

                                   10/4
                                   ----
print_cmd.c
        - print_function_def: when in posix mode, print shell function
          definitions as posix specifies them, without the leading
          `function' keyword

general.c
        - exportable_function_name: return 1 if the passed string can be
          added to the environment as an exported function name.  Currently
          prohibits function names containing  `/' and `=' from being
          exported

general.h
        - exportable_function_name: extern declaration

builtins/setattr.def
        - set_or_show_attributes: if exporting a function with export -f,
          call exportable_function_name to determine whether the function
          should be exported; don't export function if it returns 0

                                   10/7
                                   ----
builtins/setattr.def
        - set_or_show_attributes: don't show identifiers that are invisible
          and imported from the environment, since that combination of
          attributes means that the imported variable is not a valid shell
          identifier.  Report from Stephane Chazelas
          <stephane.chazelas@gmail.com>

                                   10/8
                                   ----
shell.c
        - shell_initialize: set new variable should_be_restricted, which
          says whether or not the shell will be a restricted one based on the
          shell name; use in calls to initialize_shell_variables (to inhibit
          importing shell functions) and initialize_shell_options (to inhibit
          parsing $SHELLOPTS) and initialize_bashopts (to inhibit parsing
          $BASHOPTS).  Report from <paulfm@umn.edu>

                                   10/12
                                   -----
execute_cmd.c
        - execute_function: unwind-protect loop_level, set loop_level to 0
          when entering a function so break and continue in functions don't
          break loops running outside of the function. Fix picked up from
          dash via Herbert Xu <herbert@gnodor.apana.org.au>

                                   10/13
                                   -----
doc/Makefile.in
        - bashref.pdf: create using texi2dvi --pdf rather than postprocessing
          the dvi file, so we have PDF bookmarks and links.  Fix from
          Siep Kroonenberg <siepo@cybercomm.nl>

                                   10/14
                                   -----
subst.h
        - Q_ARITH: new quoting flag. Semantics are per Posix's spec for
          arithmetic expansion: act as if string is quoted, but don't treat
          double quotes specially (in this case, they will be removed by quote
          removal)
        - Q_ARRAYSUB: new quoting flag, indicates we are expanding an indexed
          array subscript

subst.c
        - expand_arith_string: if we are not expanding the string, but we saw
          a quote with Q_ARITH specified as one of quoting flags, perform
          quote removal even if Q_DOUBLE_QUOTES is specified
        - param_expand: change calls to expand_arith_string for $[ and $((
          cases to specify Q_ARITH.  Now $(( "$x" )) and $(( "x" )) work if x
          has a value that evaluates to a valid number, as Posix specifies
        - expand_word_internal: add test for quoted&Q_ARITH to the tilde case,
          so we continue to perform tilde expansion in arithmetic contexts
        - expand_word_internal: if quoted&Q_ARITH, continue processing when we
          see a `"', acting as if the double quote isn't present (already
          Q_DOUBLE_QUOTED)

arrayfunc.c
        - array_expand_index: pass Q_DOUBLE_QUOTED|Q_ARITH|Q_ARRAYSUB as quoted
          argument in call to expand_arith_string.  This inhibits word
          splitting (Q_DOUBLE_QUOTED) while discarding double quotes (Q_ARITH),
          identical to the quote flags passed while expanding $(( )) and $[ ].
          Q_ARRAYSUB reserved for future use.  Fixes problem reported by
          Stephane Chazelas <stephane.chazelas@gmail.com>

                                   10/16
                                   -----
subst.c
        - parameter_brace_expand_word: if the PF_ASSIGNRHS flag is set and we
          are expanding what looks like an array subscripted with @ or *,
          make sure the variable we're expanding is actually an array before
          we add Q_DOUBLE_QUOTES to the flags.  If we don't, things like
          scalar[@] will remain quoted.  Fixes ubuntu bug 1381567
          https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1381567

                                   10/17
                                   -----
{jobs,nojobs}.c
        - get_original_tty_job_signals: get original signal dispostions for
          SIGTSTP, SIGTTIN, SIGTTOU before we start manipulating them in
          make_child
        - default_tty_job_signals: make sure we set SIGTSTP, SIGTTIN, or
          SIGTTOU to SIG_IGN if they were ignored at shell startup instead of
          unconditionally setting them to SIG_DFL.  Fixes bug reported by
          idallen@idallen.ca

jobs.h
        - get_original_tty_job_signals: extern declaration

trap.c
        - initialize_traps: add call to get_original_tty_job_signals

                                   10/22
                                   -----
subst.c
        - expand_string_for_rhs: when expanding in this context (rhs of a word
          expansion or pattern removal), we don't perform word splitting, so
          we don't want to split $* if IFS is empty.  Fixes bug reported by
          Stephane Chazelas <stephane.chazelas@gmail.com>

                                   10/23
                                   -----
subst.c
        - param_expand: when expanding $* in a pattern context where the
          expansion is quoted (Q_PATQUOTE), don't quote the expansion --
          the outer quotes don't make the characters in the expansion of
          $* special.  Posix interp 221.  Reported by Stephane Chazelas
          <stephane.chazelas@gmail.com>

                                   10/28
                                   -----
lib/readline/bind.c
        - enable-bracketed-paste: new bindable variable, enables support for
          a terminal's `bracketed paste mode'.  Code contributed by
          Daniel Colascione <dancol@dancol.org>

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

lib/readline/{readline.c,rlprivate.h}
        - _rl_enable_bracketed_paste: declarations
        - #defines for use by bracketed paste implementation

lib/readline/rltty.c
        - rl_prep_terminal: send BRACK_PASTE_INIT string to terminal if we
          are supposed to enable bracketed-paste mode; change terminal_prepped
          to indicate we sent that string and need to clean up
        - rl_deprep_terminal: if terminal_prepped indicates we sent the
          bracketed-paste mode init string to the terminal, send the cleanup
          string before restoring the terminal modes

lib/readline/kill.c
        - rl_bracketed_paste_begin: function to read bracketed paste until
          BRACK_PASTE_SUFF; discard the suffix, and insert the rest of the
          paste as a single (undoable) object.  Bound to BRACK_PASTE_PREF

lib/readline/funmap.c
        - bracketed-paste-begin: new bindable command, executes
          rl_bracketed_paste_begin

lib/readline/readline.c
        - bind_bracketed_paste_prefix: new function, sets up to recognize
          the bracketed paste prefix sequence (BRACK_PASTE_PREF) in emacs
          keymap and vi insertion keymap
        - readline_initialize_everything: call bind_bracketed_paste_prefix

                                   11/1
                                   ----
builtins/ulimit.def
        - RLIMIT_POSIXLOCKS: now synonym for RLIMIT_LOCKS
        - -k: new option: RLIMIT_KQUEUES, max kqueues allocated for this
          process
        - -P: new option: RLIMIT_NPTS, max number of pseudoterminals available
          to this process

doc/{bash.1,bashref.texi}
        - document `ulimit -k' option
        - document `ulimit -P' option

parse.y
        - `timespec list_terminator' production: if the list terminator is `;'
          set last_read_token to `;' to allow things like `time ; command' to
          time null commands and not throw a syntax error.  Patch from
          Piotr Grzybowski <narsil.pl@gmail.com>
        - `BANG list_terminator' production: do the same thing

variables.c
        - sv_optind: use find_shell_variable and get_variable_value so we can
          have the variable's context in the case we need to do something
          when we are restoring a previous variable context's value

builtins/getopt.h
        - sh_getopt_state_t: struct to save sh_getopt's internal state so we
          can restore it around function calls in the event that we have a
          local copy of OPTIND

builtins/getopt.[ch]
        - sh_getopt_{save,restore}_istate: new functions to save and restore
          getopt's internal state
        - sh_getopt_{alloc,dispose}_istate: new functions to allocate and
          deallocate sh_getopt_istate_t objects

execute_cmd.c
        - maybe_restore_getopt_state: restore sh_getopt state after executing
          function body iff the funtion declared a local copy of OPTIND
        - execute_function: save sh_getopt state before executing function body
        - execute_function: note in getopt_state->flags whether or not the
          function declared a local copy of OPTIND; used by
          maybe_restore_getopt_state
        - execute_function: maybe restore sh_getopt state before returning via
          call to maybe_restore_getopt_state.  Fixes bugs with getopts and
          state between calls reported in 2011 by Bernd Eggink
          <monoped@sudrala.de> and in 2014 by Oyvind Hvidsten
          <oyvind.hvidsten@dampir.no>

configure.ac
        - enable-function-import: new option, controls whether function imports
          are included.  Enabled by default.  Patch from David Galos
          <davegalos@google.com>

config.h.in
        - FUNCTION_IMPORT: define controlled by enable-function-import above

variables.c
        - initialize_shell_variables: include code to import function
          definitions from the environment if FUNCTION_IMPORT is defined

doc/bashref.texi
        - --enable_function-import: document new configuration option

                                   11/5
                                   ----
lib/readline/history.c
        - history_lines_read_from_file: new variable, set by read_history and
          read_history_range to the actual number of lines read from the
          history file.  The value is valid immediately after a call to one
          of those functions
        - history_lines_written_to_file: new variable, set by write_history,
          history_do_write, and history_truncate_file to the actual number of
          lines written to the history file.  The value is valid immediately
          after a call to one of those functions

variables.c
        - sv_histsize: set history_lines_in_file after history_truncate_file()
          only if hmax < history_lines_in_file (lines we've already read); a
          cosmetic change only

bashhist.c
        - load_history: set history_lines_in_file after read_history() from
          history_lines_read_from_file, since read_history reads all of the
          lines from the history file even if it's more than $HISTSIZE
        - maybe_save_shell_history: after calling write_history(), set
          history_lines_in_file to history_lines_written_to_file, since we
          can assume that we read everyhing we just wrote

builtins/history.def
        - history_builtin: after calling read_history (history -r), set the
          new value of history_lines_in_file, for the same reason as above
        - history_builtin: after calling read_history_range (history -n), set
          history_lines_in_file from history_lines_read_from_file

                                   11/6
                                   ----
lib/readline/histfile.c
        - history_truncate_file: since we move the old file to a backup copy
          before truncating, make sure the new file is owned by the same uid
          as the old
        - history_do_write: use chown in the same way as history_truncate_file

                                   11/12
                                   -----
lib/readline/display.c
        - expand_prompt: takes a new `flags' argument; only one flag defined
          so far: PMT_MULTILINE
        - expand_prompt: changed all callers to add new flags argument
        - rl_expand_prompt, redraw_prompt: make sure to set PMT_MULTILINE in
          FLAGS argument to expand_prompt if expanding parts of a prompt
          containing embedded newlines
        - expand_prompt: only add mode char to last line of a prompt with
          embedded newlines, so mode indicator doesn't get lost and gets
          updated properly.  Fixes problem reported by Renlin Li
          <lirenlin@gmail.com>

                                   11/13
                                   -----

lib/readline/display.c
        - prompt_modestr: changed prompt_modechar to return a string denoting
          the editing mode; default strings for emacs and both vi modes are
          #defines in this file.  prompt_modestr takes an argument in which
          it returns the length of the mode string
        - expand_prompt: if expanding mode strings in the prompt, get the
          mode string to use and add it at the beginning of the prompt string,
          before expanding it.  This will allow future work allowing the mode
          string to contain invisible characters

                                   11/15
                                   -----
lib/readline/rlprivate.h
        - _rl_{emacs,vi_cmd,vi_ins}_mode_str: extern declarations for
          variables to hold current values of user-settable mode strings;
          variables to hold lengths 

lib/readline/rlconf.h
        - defines for default values of the mode strings for each editing mode
          and keymap

lib/readline/display.c
        - _rl_{emacs,vi_cmd,vi_ins}_mode_str: new variables to hold values of
          user-settable mode strings
        - _rl_{emacs,vi_cmd,vi_ins}_modestr_len: new variables to hold lengths
          of corresponding mode string variables
        - prompt_modestr: return appropriate user-settable mode string
          variables

lib/readline/bind.c
        - {emacs,vi-ins,vi-cmd}-mode-string: new user-settable mode string
          variables
        - sv_{emacs,viins,vicmd}_modestr: variable handling functions for user-
          settable mode string variables. Non-null values are run through
          rl_translate_keyseq so users can include invisible character
          sequences in the mode strings; null values restore the default
        - _rl_get_string_variable_value: handle values for new user-settable
          mode string variables. Original code contributed by Dylan Cali
          <calid1984@gmail.com>

lib/readline/doc/rluser.texi
        - {emacs,vi-ins,vi-cmd}-mode-string: document, including the fact that
          you can use \1 and \2 to bracket sequences of non-printing
          characters

                                   11/16
                                   -----
lib/readline/history.c
        - add_history: replace loop that copies history list down one item
          with call to memmove to take advantage of whatever efficiencies
          libc can offer.  Won't be any slower than current loop

lib/readline/display.c
        - rl_redraw_prompt_last_line: new function, calls redraw_prompt if
          the prompt contains multiple lines; calls rl_forced_update_display
          if not

lib/readline/readline.h
        - rl_redraw_prompt_last_line: extern declaration, undocumented in
          texinfo manual until I get it a little more work

bashline.c
        - bash_execute_unix_command: instead of unconditionally calling
          rl_forced_update_display, call rl_redraw_prompt_last_line if we
          cleared the last line before executing the command.  This keeps
          commands that don't display any other output but just manipulate
          the contents of the line buffer from redisplaying the prompt lines
          before the last newline multiple times.  Fixes bug reported by
          Jesper Nygards <jesper.nygards@gmail.com> and Rob Foehl
          <rwf@loonybin.net>.  This means that commands that display output
          will *only* display the final line of the prompt
        - bash_execute_unix_command: if the command returns 124, we redraw
          the line unconditionally, including all lines of the prompt

                                   11/18
                                   -----
builtins/mapfile.def
        - mapfile_builtin: don't allow a valid array reference through to
          mapfile(), since it will just create a shell variable with that name.
          Bug and fix from Eduardo A. Bustamante López <dualbus@gmail.com>

                                   11/19
                                   -----
lib/readline/complete.c
        - _rl_colored_completion_prefix: new variable, if non-zero, and color
          support is compiled in, and the $LS_COLORS variable exists and
          contains color definitions, display any common prefix of a set of
          completions in blue when displaying all the possible completions.
          Doesn't work with menu-complete, which inserts possible completions
          inline
        - colored_prefix_start(), colored_prefix_end(): new functions, used to
          bracket colored completion prefixes
        - fnprint: if prefix_bytes is non-zero, and _rl_colored_completion_prefix
          is > 0, display the first PREFIX_BYTES bytes of the word bracketed
          by calls to colored_prefix_start and colored_prefix_end
        - print_filename: if _rl_colored_completion_prefix is > 0, compute the
          length in bytes of the common prefix and pass that to fnprint

lib/readline/readline.c
        - readline_initialize_everything: initialize the colors from $LS_COLORS
          if _rl_colored_completion_prefix is non-zero

lib/readline/colors.c
        - _rl_print_prefix_color: new function, changes text color to that
          defined for the common prefix of a set of possible completions
          (currently cyan, same as directories); currently uses C_PREFIX,
          defined in colors.h as C_DIR

lib/readline/colors.h
        - _rl_print_prefix_color: new extern declaration

lib/readline/bind.c
        - colored-completion-prefix: new bindable variable, if set, common
          prefix of a set of possible completions is displayed in color.
          Feature requested by several, most recently by Richard Neill
          <rn214@richardneill.org> (in a slightly different form) and
          Duy Nguyen <pclouds@gmail.com>

                                   11/20
                                   -----
builtins/printf.def
        - printf_builtin: allow null (empty) format strings supplied with
          -v var to set `var' to the empty string.  That is, printf -v var ""
          is now the same as var="".  Change suggested by Mike Frysinger
          <vapier@gentoo.org>

pathexp.h
        - FNMATCH_NOCASEGLOB: macro to decide whether or not to pass
          FNM_CASEFOLD flag to strmatch depending on whether glob_ignore_case
          is set; analogout to FNMATCH_IGNCASE

pathexp.c
        - glob_name_is_acceptable: use FNMATCH_NOCASEMATCH to determine flags
          passed to strmatch; if nocaseglob is used to generate glob matches,
          it should be used to generate ignored matches

                                   11/21
                                   -----
pcomplete.c
        - filter_stringlist: the call to strmatch now honors the setting of
          nocasematch.  Feature request from Ville Skytta <ville.skytta@iki.fi>
          back in 2010

doc/bash.1,lib/readline/doc/rluser.texi
        - complete -X: document that filtering the list of possible completions
          honors the nocasematch option when performing matching

lib/glob/gmisc.c
        - include chartypes.h and strmatch.h for new defines
        - match_pattern_{wchar,char}: now take new third FLAGS argument, flags
          have same meanings as strmatch(); intent is to handle case
          insensitive comparisons under same conditions as strmatch
        - FOLD: imported case-folding define from sm_loop.c; wide and single-
          byte character versions
        - match_pattern_{wchar,char}: use FOLD when comparing characters to
          honor FNM_CASEFOLD if set in FLAGS argument

externs.h
        - match_pattern_{wchar,char}: updated extern declarations

subst.c
        - match_{upattern,wpattern}: update strmatch/wcsmatch calls to include
          FNMATCH_IGNCASE in flags argument
        - match_{upattern,wpattern}: update match_pattern_{char,wchar} calls
          to include FNMATCH_IGNCASE in flags argument (consistent with calls
          to strmatch).  This makes pattern substitution word expansion honor
          nocasematch shell option.  Feature requested by Davide Baldini
          <baldiniebaldini@gmail.com>
        - match_wpattern: make sure to fold case if necessary when doing simple
          matching

doc/{bash.1,bashref.texi}
        - pattern substitution: updated description to include honoring setting
          of nocasematch when performing matching

subst.c
        - expand_word_internal: optimize handling of "$@" idiom by calling
          list_rest_of_args() and quote_list() directly at the top of the
          function instead of going through normal code path
        - cached_quoted_dollar_at: WORD_LIST of quoted positional parameters,
          used by same code above that optimizes "$@"; if non-null we just
          return a copy of the list; if null, we save a copy of the list we
          create
        - invalidate_cached_quoted_dollar_at: convenience function to allow
          other parts of the shell (e.g., remember_args()) to destroy the
          cached list of quoted positional parameter when the positional
          parameters change

builtins/common.c
        - remember_args: call invalidate_cached_quoted_dollar_at()

builtins/shift.def
        - shift_builtin: call invalidate_cached_quoted_dollar_at after modifying
          dollar_vars[]

builtins/source.def
        - maybe_pop_dollar_vars: call invalidate_cached_quoted_dollar_at just
          to be safe

                                   11/23
                                   -----
builtins/evalfile.c
        - _evalfile: return -1 if errno == ENOENT and the flags don't include
          FEVAL_ENOENTOK.  If we print an error message we should return an
          error
        - force_execute_file: new function, reads and executes commands from
          a file but returns an error if file  doesn't exist

builtins/common.h
        - force_execute_file: new extern declaration

shell.c
        - main: call start_debugger even if dollar_vars[1] == 0 if the shell
          isn't interactive (interactive_shell == 0)
        - start_debugger: call force_execute_file instead of maybe_execute_file;
          turn off debugging mode if it returns value < 0

                                   11/24
                                   -----
hashlib.h
        - DEFAULT_HASH_BUCKETS: doubled to 128, cost in memory use is small but
          changes traversal order when not sorting results

                                   11/25
                                   -----
doc/{bash.1,bashref.texi}
        - make it clearer, by breaking it out into a separate paragraph, that
          referencing an array without a subscript is equivalent to referencing
          it with subscript 0
        - add text saying that referencing any variable using a valid subscript
          is OK

                                   11/28
                                   -----

arrayfunc.c
        - bind_array_variable, bind_assoc_variable: allow binding value to a
          readonly variable if the ASS_FORCE flag is set in the FLAGS
          argument

subst.h
        - ASS_FORCE: new assignment flag; means to allow assignment even if
          variable is marked readonly

builtins/declare.def
        - when assigning a value to an array or assoc variable using
          something like `declare -r foo=bar' where foo is an existing array
          variable, pass the ASS_FORCE to assign_array_var_from_string so
          the assignment is allowed.  Fixes debian bug 765759
          http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=765759

builtins/setattr.def
        - var_attribute_string: new function to return (as argument) a char
          array with attribute flag values for a given variable; returns the
          length of the array

lib/sh/shquote.c
        - sh_quote_reusable: function returning a version of its string
          argument that is quoted for reuse

externs.h
        - sh_quote_reusable: extern declaration

builtins/common.h
        - MAX_ATTRIBUTES: define used to size arrays for attribute flag
          characters
        - var_attribute_string: new extern function declaration

subst.c
        - array_remove_pattern: fixed a bug where `var' instead of `v' was
          tested for invisible attribute
        - get_var_and_type: fill in a valid *VARP if returning VT_VARIABLE
          because callers may need to use it
        - parameter_brace_transform: family of functions to implement the new
          mksh-inspired ${param@spec} transformation word expansions.  Some
          of the operators transform the (expanded) value of the parameter,
          the rest expand to information about the parameter itself
          (array_transform, parameter_list_transform, list_transform,
          string_transform, pos_params_assignment, array_var_assignment,
          string_var_assignment)
        - parameter_brace_expand: changes to parse the new `@' word expansion
          operator and call parameter_brace_transform appropriately
        - parameter_brace_expand: make sure we handle ${#@} as we have before
          even in the presence of the new `@' operator

variables.c
        - push_temp_var: make sure to call bind_variable_internal with the
          ASS_FORCE flag so we override readonly variables created with
          something like `tempvar=foo declare -r foo'.
        - bind_variable_internal: honor ASS_FORCE flag to allow binding even
          if a variable is readonly

execute_cmd.c
        - struct func_array_state: new state to save state of BASH_LINENO,
          BASH_SOURCE, and FUNCNAME during function execution so it can be
          restored on a jump to top level
        - restore_funcarray_state: new function to restore func_array_state
        - execute_function: fill in func_array_state variable, add unwind-
          protect to restore it on jump to top level, call explicitly at
          end of function if subshell != 0 (may not be necessary, but safe
          for now).  Fixes bug with local assignments to FUNCNAME reported
          by Arfrever Frehtes Taifersar Arahesis <arfrever.fta@gmail.com>

                                   11/29
                                   -----
arrayfunc.c
        - assign_compound_array_list: turn off ASS_APPEND flag when processing
          each individual assignment inside the parens in var+=(...).  The
          outer += should not affect assignments to existing subscripts;
          those should be treated like usual assignments unless += supplied
          inside the parens.  Bug report from Maarten Billemont
          <lhunath@lyndir.com>, fix from Eduardo A. Bustamante López
          <dualbus@gmail.com>

config.h.in
        - HAVE_PSELECT: define if pselect(2) available

configure.ac
        - check for pselect(2), define HAVE_PSELECT if found

lib/readline/input.c
        - rl_getc: use pselect(2) to wait for input ready on readline's
          input fd or for a signal to arrive, will handle SIGWINCH (which
          does not interrupt read(2)) and thus allow resize to happen without
          having to wait to read more input.  Only works if pselect available
          and returns -1/EINTR on a signal even if the signal was installed
          with SA_RESTART.  From a suggestion from Egmont Koblinger
          <egmont@gmail.com>

                                   12/3
                                   ----
variables.c
        - flush_temporary_env: new function, disposes all temp variables in
          temporary_env hash table
        - bind_variable: only try to update a temporary variable's value in the
          temporary env if the value argument is not null.  Fixes bug reported
          by <tangqinghao@360.cn>

variables.h
        - flush_temporary_env: new extern declaration

subst.c
        - command_substitute: if running command substitution as part of
          expanding a redirection (expanding_redir == 1), flush any temporary
          environment we've inherited as part of this command, since we are not
          supposed to have access to the temporary environment.  Since
          expanding_redir only controls access to the temporary environment for
          variable lookup and binding, we can turn it off in the subshell

                                   12/4
                                   ----
builtins/printf.def
        - printstr: make sure a missing precision specifier after a `.' is
          treated as 0, as printf(3) specifies.  Fixes ubuntu bash bug
          1399087 (https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1399087)

                                   12/5
                                   ----
subst.c
        - skip_to_delim: if scanning past process substitution (skipcmd == 1,
          noprocsub == 0), use extract_delimited_string instead of
          extract_process_subst, which was changed a while back (bash-4.3.23)
          to use xparse_dolparen.  xparse_dolparen complains if the command
          or process substitution is unterminated, since it runs the parser,
          which is not what we want here.  Command substitution does the same
          thing.  Fixes bug reported by  Daniel Kahn Gillmor
          <dkg@fifthhorseman.net> as Debian bash bug 771968
          (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=771968)

                                   12/6
                                   ----
subst.c
        - command_substitute: short-circuit without forking on a command string
          that consists entirely of <blank>s and newlines

jobs.c
        - make_child: changes to allow interrupts through if fork fails and
          we are sleeping for `forksleep' seconds
        - waitchld: make things a little more resilient if CHILD ends up NULL

                                   12/12
                                   -----
lib/readline/complete.c
        - rl_display_match_list: when calculating common prefix to display in
          color, make sure we correctly handle a common prefix with a trailing
          `/' as we do when checking whether or not to add an ellipis.
          printable_part() doesn't return the whole pathname if it ends in a
          slash, to avoid printing null strings, so we have to make sure we
          have the entire prefix

lib/readline/complete.c
        - _rl_complete_display_matches_interrupt: new variable, set to 1 by
          _rl_complete_sigcleanup to let rl_display_match_list know it has
          freed the match list
        - display_matches: check for signals during the printing loops with
          RL_SIG_RECEIVED(), return immediately if there is a pending signal
          (might not want to do this if it's SIGWINCH -- CHECK)
        - rl_complete_internal: if _rl_complete_display_matches_interrupt
          set after calling display_matches, just null out `matches' since
          it's already been freed and call any application-set signal hook

                                   12/14
                                   -----
parse.y
        - time_command_acceptable: if the token before a newline is `|',
          return 0, since it's not really valid to time inside a pipeline.
          Only handles a single newline but allows things like
                echo a |
                 time cat
          to invoke /usr/bin/time, which is probably enough to catch the
          stray carriage return.  Fixes bug reported by Andre Majorel
          <aym-ung@teaser.fr>

builtins/declare.def
        - declare_internal: don't try to perform compound assignments unless
          the WORD_DESC has flags including W_COMPASSIGN (maybe should check
          W_ASSIGNMENT as well), avoiding unexpected evaluation if a word
          is of the form (word) and is assigned to an array variable like so:
          declare -x var=$value.  Bug reported by Stephane Chazelas
          <stephane.chazelas@gmail.com>. Will eventually be contingent on
          compatibility level > 43, but not there yet. TENTATIVE

                                   12/15
                                   -----
lib/sh/Makefile.in
        - add missing dependencies for shmatch.o.  Pointed out by Sergey
          Mikhailov <sergey.mikhailov@gmail.com>

                                   12/16
                                   -----
{execute_cmd,subst}.c
        - W_ASSIGNINT: remove, not used any more

execute_cmd.c
        - fix_assignment_words: don't look for `-i' option and set W_ASSIGNINT
          flag any more; doing things a different way
        - shell_expand_word_list: instead of using W_ASSIGNINT flag, since it
          doesn't take into account all options that can transform values on
          assignment (-l/-u/-c can also), go through option arguments looking
          for options that need special handling and add them to the `opts'
          array for make_internal_declare to use.  Fixes bug with constructs
          like `declare -al foo=(UPONE UPTWO UPTHREE)' not being lowercased on
          assignment reported by Linda Walsh <bash@tlinx.org>



                                   12/18
                                   -----
lib/readline/readline.c
        - rl_internal_char: when we read EOF on a non-empty line, check for
          signals and invoke any readline signal handling and any application-
          installed signal hook

                                   12/20
                                   -----
lib/readline/readline.c
        - rl_internal_char: if we read EOF on a non-empty line, set c to
          _rl_eof_char the first time through.  If we read EOF the next time,
          return EOF from readline().  If callbacks are defined, this returns
          EOF immediately, since lastc isn't available.  Fix for problem
          most recently identified by Jiri Kukacka <jiri.kukacka@orcle.com>,
          it has come up in the past

                                   12/21
                                   -----
builtins/declare.def
        - declare_internal: keep track of whether or not an assignment statement
          argument to declare is an array subscript assignment; need to
          differentiate assignments from straight declarations (declare a[4])
          which are accepted for backwards compatibility
        - assignment statements like declare a[2]=foo are now treated as
          straight subscript assignment statements if a already exists as an
          array variable
        - declare foo='(1 2 3)' is treated as an assignment to foo[0] if foo
          exists and is an array, just as it would be if it were an assignment
          statement and `declare' was not present.  All this from a proposal
          by Stephane Chazelas <stephane.chazelas@gmail.com>

                                   12/22
                                   -----
builtins/read.def
        - read_tty_modified: function to tell the rest of the shell if the
          read builtin has modified the tty
        - read_builtin: make sure to initialize terminating signals before
          installing a SIGALRM signal handler in case we modify the tty as
          well as ask for a timeout; the subsequent call to
          initialize_terminating_signals would overwrite the read-builtin-
          local SIGALRM handler

builtins/common.h
        - read_tty_modified: new extern declaration

shell.c
        - exit_shell: if read_tty_modified() returns true, call read_tty_cleanup
          to undo the terminal modifications. Extension of previous fixes;
          fixes bug with read -s reported by Richard W. Marsden
          <richard@marsden.nu>


                                   12/23
                                   -----
builtins/setattr.def
        - show_var_attributes: call print_array_assignment and print_assoc_assignment
          with a `not quoted' flag so the assignment statements are not
          surrounded by single quotes.  Caused changes to a lot of test output

                                   12/29
                                   -----
lib/readline/complete.c
        - stat_char: Windows doesn't handle X_OK flag to access(2); use file
          extensions to determine whether or not a file is executable.  Bug
          report and fix from Eli Zaretskii <eliz@gnu.org>

configure.ac
        - changed version to bash-4.4-devel

lib/readline/readline.h
        - changed version to readline-6.4

                                   12/30
                                   -----
readline.h
        - struct readline_state: fix types of `ignorefunc' and `attemptfunc'
          members

lib/sh/shquote.c,externs.h
        - sh_contains_shell_metas, sh_contains_quotes: now take `const char *'
          as parameter

stringlib.c,externs.h
        - strcreplace: `text' argument now `const char *'

pathexp.[ch]
        - quote_globbing_chars: `string' argument now `const char *', accompanying
          changes to function local variables

pcomplete.c
        - preproc_filterpat: `text' argument now `const char *'
        - filter_stringlist: `text' argument now `const char *'

                                   12/31
                                   -----
builtins/evalstring.c
        - should_suppress_fork: new function, broke code that decides whether
          to turn on CMD_NO_FORK flag out of parse_and_execute into a separate
          function

execute_cmd.c
        - execute_command_internal: AND_AND, OR_OR: call should_suppress_fork
          for the RHS of && and ||, make `make' invocations marginally more
          efficient

flags.c
        - get_current_flags: returns a bitmap of all single-letter shell
          options with a non-zero value meaning option is enabled
        - set_current_flags: set current single-letter options from a passed
          bitmap, which has presumably been initialized with get_current_flags

flags.h
        - {get,set}_current_flags: new extern declarations

builtins/declare.def
        - declare_internal: if invoked as `local', interpret name argument of
          `-' to mean to save (and restore at shell return) single-letter
          shell options

variables.c
        - push_func_var: if we encounter `-' as the name of a local variable,
          take the value and call set_current_flags on it to restore old
          flag settings

builtins/set.def
        - get_current_options: returns a bitmap of all shell options settable
          with `set', with a non-zero value meaning option is enabled
        - set_current_options: set current shell options from a passed
          bitmap, which has presumably been initialized with get_current_options


                                 1/1/2015
                                 --------
lib/readline/parens.c
        - _rl_blink_matching_paren: initialize to 0 whether or not select(2) is
          available.  Inconsistency reported by Mark Karpov
          <markkarpov@opmbx.org>

builtins/declare.def
        - declare_internal: use get_current_options instead of
          get_current_flags, so `local -' can be generalized

variables.c
        - push_func_var: use set_current_options instead of set_current_flags
          so `local -' can be generalized

doc/{bash.1,bashref.texi}
        - document new `local -' feature; originally inspired by Robert Elz
          <kre@munnari.oz.au> describing feature in NetBSD sh

                                    1/3
                                    ---
lib/readline/{complete,funmap,kill,histfile,util}
lib/readline/readline.h
lib/tilde/tilde.c
        - fixes for filename- and evironment-related issues on Windows.  Fixes
          from Eli Zaretskii <eliz@gnu.org>
        - Windows can paste to the console from the clipboard like Cygwin
        - Windows uses $APPDATA as a pseudo-$HOME

lib/readline/input.c
        - rl_getc: use _getch on Windows to avoid being overridden by a getch
          ncurses function
        - win32_isatty: replace Windows isatty(3) with a function that does
          additional checks, sinces Windows isatty returns non-zero for
          every character device.  From Eli Zaretskii <eliz@gnu.org>

lib/readline/display.c
        - delete_chars: if compiled with ncurses on Windows, this code can
          work, so build it in if NCURSES_VERSION defined
        - open_some_spaces: ditto

                                    1/6
                                    ---
doc/{bash.1,bashref.texi}
        - minor grammar and typo corrections from TonyMc <afmcc@btinternet.com>

                                    1/8
                                    ---
sig.c
        - throw_to_top_level: only attempt to run the interrupt trap if SIGINT
          is trapped -- minor optimization
        - throw_to_top_level: if we are running a trap, call run_trap_cleanup
          to turn off the sigmodes flags

trap.c
        - _run_trap_internal: temporarily suppress pending SIGINTs while running
          one of the traps the shell handles internally (e.g., ERR).  Fixes bug
          reported by Keith Thompson <keithsthompson@gmail.com>

                                   1/10
                                   ----
bashhist.c
        - bash_history_inhibit_expansion: use skip_to_delim with the history
          expansion character to see whether or not the instance of the
          history expansion character should be skipped because, for instance,
          it is in a command substitution.  Fixes issue reported by
          Zigmund.Ozean@zig-home.localdomain

                                   1/14
                                   ----
lib/readline/isearch.c
        - _rl_isearch_dispatch: if we are in a multibyte locale, make sure to
          use _rl_find_prev_mbchar when trying to delete characters from the
          search string, instead of just chopping off the previous byte.
          Fixes bug reported by Kyrylo Shpytsya <kshpitsa@gmail.com>

lib/readline/complete.c
        - rl_filename_completion_function: if we tilde-expand `dirname', make
          sure we use the expanded result instead of throwing it away for the
          quote-removed `users_dirname', which still has any leading tilde.
          Fixes bug reported by Dave Rutherford <dave@evilpettingzoo.com>

execute_cmd.c
        - select_query: if the read builtin doesn't return anything in REPLY,
          return NULL (failure). Fixes bug reported by Etherial Raine
          <osirisgothra@hotmail.com>

builtins/read.def
        - read_builtin: if REPLY has the readonly or noassign attribute, return
          failure

                                   1/16
                                   ----
redir.c
        - redir_open: if open() returns -1/EINTR, check traps as well as
          using QUIT to handle signals

                                   1/18
                                   ----
jobs.c
        - wait_for: make sure queue_sigchld is set to 1 before unblocking
          SIGCHLD if MUST_UNBLOCK_CHLD is defined

                                   1/19
                                   ----
pcomplete.h
        - new progcomp option: COPT_NOSORT, means to not sort list of possible
          completions

pcomplete.c
        - pcomp_set_readline_variables: if COPT_NOSORT set in compspec flags,
          set rl_sort_completion_duplicates to 0

builtins/complete.def
        - _compopt: new option value: -o nosort, sets COPT_NOSORT in compspec
          option flags. Provides new -o nosort option for complete and compgen

bashline.c
        - attempt_shell_completion: make sure rl_sort_completion_matches is
          set to 1 before completion is attempted; allow a compspec to turn
          it off

lib/readline/kill.c
        - rl_vi_yank_pop: new function, vi-mode version of yank-pop.  Original
          code from Ian Kelling <ian@iankelling.org>

lib/readline/funmap.c
        - `vi-yank-pop': bindable name mapped to rl_vi_yank_pop

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

                                   1/21
                                   ----
lib/sh/shquote.c
        - sh_backslash_quote: change to understand and handle multibyte
          characters, using is_basic, COPY_CHAR_P.  See
          https://bugzilla.redhat.com/show_bug.cgi?id=1184320 for original
          report

                                   1/23
                                   ----
include/posixjmp.h
        - use setjmp_sigs instead of redefined setjmp, it fails on Cygwin.
          Report from Eric Blake <eblake@redhat.com>

builtins/wait.def,shell.c
        - use setjmp_sigs instead of setjmp call, since setjmp no longer
          redefined to something known

include/chartypes.h, lib/readline/chardefs.h
        - make sure all ctype.h macros are called with unsigned char args,
          casting to make sure

lib/sh/casemod.c
        - sh_modcase: don't assume that the upper and lower case versions of a
          character are the same width, so don't try to do the conversion in
          place: convert and copy the converted characters one or more at a
          time to the returned string
        - sh_modcase: since upper and lower case versions of same character
          may have different widths in some locales, don't shortcut and assume
          that we can do single-byte case modification (toupper) with a
          single-byte input character (e.g., `i').  Fix for problem reported
          by Stephane Chazelas <stephane.chazelas@gmail.com>

                                   1/31
                                   ----
lib/readline/histfile.c
        - history_truncate_file, history_do_write: if the first rename(2)
          of the history file to the backup file fails, set the backup file
          name to NULL to prevent any later attempts to restore the
          original.  Report from Jonathan Hankins <jhankins@homewood.k12.al.us>
        - history_do_write: don't attempt to back up non-regular files.
          Report from Jonathan Hankins <jhankins@homewood.k12.al.us>

                                    2/2
                                    ---
trap.c
        - run_interrupt_trap: now takes an argument indicating whether or not
          it was called just before a longjmp to top_level; change callers
        - run_interrupt_trap: if running a trap and we are being called before
          a longjmp to top_level, call run_trap_cleanup on running trap so
          a QUIT call while running a DEBUG trap, for instance, doesn't leave
          sigmodes[DEBUG_TRAP] including SIG_INPROGRESS.  Fixes bug reported
          by Chih-Chieh Chou <ccchou@gmail.com>

sig.c
        - throw_to_top_level: change call to run_interrupt_trap to pass arg 1
        - termsig_handler: change call to run_interrupt_trap

trap.h
        - run_interrupt_trap: update extern prototype declaration

                                    2/4
                                    ---
lib/readline/histfile.c
        - histfile_backup, histfile_restore: new functions to back up and restore
          history file to `filename-', following (one level of) symlinks through
          so we don't rename the symlink itself.  From a suggestion by
          Jonathan Hankins <jhankins@homewood.k12.al.us>

assoc.c
        - assoc_to_assign: if an index happens to be `@' or `*', make sure it's
          double-quoted.  Bug report from Greg Wooledge <wooledg@eeg.ccf.org>

                                    2/5
                                    ---
lib/readline/bind.c
        - rl_bind_key: if we are rebinding a key that is not bound to a
          function or a macro, construct a key sequence and pass it to
          rl_bind_keyseq.  Make sure that '\' when it is used as a key is
          changed to "\\" so it can survive rl_translate_keyseq.  Fixes
          https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776743

                                    2/8
                                    ---
include/posixjmp.h
        - _rl_longjmp, sh_longjmp: new defines, expand to siglongjmp or longjmp
          depending on autoconf results, used to avoid redefining longjmp,
          remove _OPENNT conditional code.  Report from Eric Blake
          <eblake@redhat.com>

{bashjmp,quit}.h,{execute_cmd,expr,jobs,sig,trap}.c,builtins/{evalstring.c,return.def}
        - change calls to longjmp to use sh_longjmp

lib/readline/util.c
        - change calls to longjmp to use _rl_longjmp

                                   2/18
                                   ----
variables.c
        - bind_int_variable: make sure `v' is non-null before making it visible

                                   2/19
                                   ----
arrayfunc.c
        - assign_array_var_from_word_list: after assignment, mark variable as no
          longer invisible
        - assign_array_var_from_string: after assignment, mark variable as no
          longer invisible

builtins/declare.def
        - declare_internal: add warning if an attempt is made to use a quoted
          compound assignment as an argument to declare (declare -a foo='( 1 2 )');
          backwards compatible with bash-4.3. Still a tentative change

                                   2/20
                                   ----
lib/glob/smatch.c
        - is_wcclass: check malloc() return value, return -1 if it fails
          Report from Tobias Stoeckmann <tobias@stoeckmann.org>

lib/sh/shmatch.c
        - sh_regmatch: check malloc() return value, handle NULL value if it
          fails.  Report from Tobias Stoeckmann <tobias@stoeckmann.org>

                                   2/22
                                   ----
lib/readline/doc/rltech.texi
        - rl_callback_handler_install: note that the handler function should
          free the line it receives, as with readline.  Suggested by
          Ulf Magnusson <ulfalizer@gmail.com>
        - Readline Signal Handling: note that application needs to clean up
          readline's terminal state if it wants to handle a signal before
          the line handler restores it.  Suggested by Ulf Magnusson
          <ulfalizer@gmail.com>

                                   2/24
                                   ----
lib/readline/histfile.c
        - history_do_write,history_truncate_file: if the write fails, make sure
          to set history_lines_written_to_file to 0 so we don't lose those
          history entries

                                   2/27
                                   ----
execute_cmd.c
        - execute_function: unwind-protect the value of line_number_for_err_trap,
          so a function that returns a non-zero value and triggers an ERR trap
          has the right value for LINENO. Any simple command in the function
          body can change it.  Bug report from Paul Donohue <gnu@paulsd.com>

                                    3/5
                                    ---
lib/sh/shquote.c
        - sh_backslash_quote: cast `c' to `unsigned char' before using as
          index into backslash_table.  Report and fix from
          alexeyv.90@gmail.com

arrayfunc.[ch]
        - valid_array_reference: added second `flags' argument for future use;
          currently unused

parse.y,{redir,subst,variables,test}.c
builtins/{declare,printf,read,set}.def
        - valid_array_reference: changed callers

                                    3/7
                                    ---
lib/readline/signals.c
        - _rl_handle_signal: if readline gets a SIGTSTP or SIGTTIN, block
          SIGTTOU so a backgrounded readline can reset the terminal settings
          appropriately, otherwise the terminal state and readline's idea
          of it can get messed up.  Original report from Dave Wysochanski
          <dwysocha@redhat.com> and Dave Anderson <anderson@redhat.com>

trap.c
        - run_pending_traps: don't allow recursive SIGWINCH trap invocations;
          they're wasteful and trying to handle a stream of signals while a
          user resizes the terminal can lead to malloc errors trying to save
          and restore the_pipeline multiple times.  Problem reported most
          recently by Martin M. S. Pederson (Fedora bash bug 1197768
          https://bugzilla.redhat.com/show_bug.cgi?id=1197768)
        - reset_or_restore_signal_handlers: set pending_traps to 0 for all
          signals when forking a child. TENTATIVE fix

jobs.c
        - {save,restore}_pipeline: block SIGCHLD while manipulating the_pipeline
          like cleanup_the_pipeline does. XXX - may not be necessary

lib/readline/display.c
        - rl_redisplay: fixed case where multibyte character in the prompt
          (e.g., \u03bb) in the last screen column causes problems with line
          wrapping because the newline marker is put in the middle of the
          multibyte char.  Most recently reported on Ubuntu by
          <sterpe@gmail.com>

pathexp.c
        - quote_string_for_globbing: if a bracket expression doesn't have a
          closing right bracket, rescan it from just after the opening
          bracket without treating it as a bracket expression.  Bug report
          from Stephane Chazelas <stephane.chazelas@gmail.com>

                                    3/9
                                    ---
subst.c
        - process_substitute: keep the last pipeline created to run a process
          substitution in LAST_PROCSUB_CHILD; discard it when another one is
          created

jobs.[ch]
        - discard_pipeline: now global, so process_substitute can call it

jobs.c
        - last_procsub_child: new variable, set and modified only by the process
          substitution code
        - find_pipeline: if the requested pid is in LAST_PROCSUB_CHILD, return
          it; analogous to the way this code handles the_pipeline
        - waitchld: if we find a child via find_pipeline that is a part of the
          last process substitution child, mark that child appropriately.  If
          the child is dead, add it to the bgp list.  This and the previous
          change allow waiting for the most recent process substitution (the
          one corresponding to $!).  Original report from Stephane Chazelas
          <stephane.chazelas@gmail.com>

                                   3/10
                                   ----
arrayfunc.c
        - unbind_array_element: make sure skipsubscript() doesn't try to parse
          embedded quotes in the subscript, since this has already been through
          one round of word expansion before calling the unset builtin.  (This
          function is only called by the unset builtin).  Fixes bug reported by
          <vampyrebat@gmail.com>

                                   3/17
                                   ----
jobs.c
        - waitchld: move code that adds the last process substitution pid to
          the bgpids array from waitchld (where it can call malloc in a signal
          handler context) to cleanup_dead_jobs

                                   3/19
                                   ----
subst.c
        - parameter_brace_expand: if expanding an array in a context where word
          splitting will not take place (W_ASSIGNRHS only for now), make sure
          to pass the double-quoted flag to chk_atstar so we don't get the
          unquoted $* behavior, which will cause unwanted word splitting.
          Fixes bug reported by isabella parakiss <izaberina@gmail.com>

arrayfunc.c
        - unbind_array_element: don't assume that caller will check and pass
          only array variables; don't allow non-array variables to be unset
          using the `@' or `*' subscripts and don't allow any subscripts other
          than 0; return -2 in those cases
        - unbind_array_element: unset a non-array variable if passed a subscript
          of `0' (e.g., `unbind "scalar[0]"').  This is new functionality that
          parallels the ${scalar[0]} expansion

builtins/set.def
        - unset_builtin: don't check whether a variable is an array if it's
          referenced using array syntax (scalar[0]); pass it to
          unbind_array_element anyway and check the result.  This means that
          `unset scalar' and `unset scalar[0]' are equivalent

                                   3/20
                                   ----
builtins/set.def
        - set_builtin: make `-i' an invalid option, unconditionally for now.
          From a bug-bash discussion started by Peng Yu <pengyu.ut@gmail.com>

                                   3/21
                                   ----
lib/readline/colors.c
        - _rl_print_color_indicator: handle dangling symlinks (C_ORPHAN) and
          the `target' specifier for links (dereference S_ISLNK if the target
          exists).  Bug report and fix from andreas@stapelspeicher.org

{arrayfunc,subst}.c
        - add code to save and restore this_command_name in places that set
          this_command_name to NULL to prevent error messages from arithmetic
          evaluation.  Fixes bug reported by brian.carpenter@gmail.com

builtins/mapfile.def
        - do_chop: remove a new DELIM argument from the line, instead of
          unconditionally removing newline
        - mapfile: if -d delim is supplied and we are breaking fields at DELIM,
          remove DELIM if the -t option is supplied by passing DELIM to do_chop().
          Suggested by Geir Hauge <geir.hauge@gmail.com>

doc/{bash.1,bashref.texi}
        - mapfile: document new -t option behavior, defaults are the same

builtins/alias.def
        - print_alias: if the first character of an alias name is `-', add a
          `-- ' after `alias' to avoid option errors when trying to reuse the
          output.  Bug report and fix on savannah from Pasha Bolokhov
          <pasha.bolokhov@gmail.com>

                                   3/22
                                   ----
builtins/declare.def
        - declare_internal: if creating a variable does not return a valid
          variable in VAR, check for null variable before dereferencing it.
          This happens with nameref variables referencing variables set to
          the empty string.
          Fixes bug reported by Arthur200000 <arthur200126@163.com> 

                                   3/23
                                   ----
doc/{bash.1,bashref.texi}
        - INVOCATION: add language to make it clear that non-interactive login
          shells execute ~/.bash_logout if they run the `exit' builtin.  From a
          question from Christoph Anton Mitterer <calestyo@scientia.net>

                                    4/6
                                    ---
subst.c
        - process_substitute: increment and decrement subshell_level around
          calls to parse_and_execute, as in command substitution, so
          $BASH_SUBSHELL gets new values in the subshell.  Fixes inconsistency
          pointed out by Peng Yu <pengyu.ut@gmail.com>

doc/{bash.1,bashref.texi}
        - read: add clarifying text to note that the -N option does not split
          on $IFS, but does retain backslash as an escape character subject
          to -r.  Report from isabella parakiss <izaberina@gmail.com>

builtins/declare.def
        - declare_internal: unless it's the last statement in a {...} block,
          NEXT_VARIABLE must be protected by braces.  Bug introduced in patch
          from 3/22, reported by Eduardo A. Bustamante López
          <dualbus@gmail.com>

                                    4/7
                                    ---
parse.y
        - shell_getc: if bash is reading input from a string that ends with an
          unquoted backslash, add another backslash instead of a newline, since
          the backslash and newline will disappear in normal processing.  Fixes
          bug with `bash -c 'eval \\; echo y' ' skipping the eval command and
          setting incorrect exit status, and `bash -ic 'eval \\; echo y' '
          seeing EOF on empty line and exiting before the echo.  Keep track of
          backslash state with last_was_backslash; set in char reading loop.
          Fixes bug reported by Eduardo A. Bustamante López <dualbus@gmail.com>

                                    4/8
                                    ---
shell.c
        - main: check for $INSIDE_EMACS as well as $EMACS when deciding whether
          or not bash is being run in a GNU emacs shell window.  Don't bother
          checking whether $TERM is unset because variable initialization sets
          it to `dumb' if unset.  Fixes from Paul Eggert <eggert@CS.UCLA.EDU>

parse.y
        - push_token: new function, rotates current_token through last_read_token,
          saving old values like yylex() does, sets current_token to argument

evalfile.c
        - _evalfile: if current_token is yacc_EOF, push a newline as the value
          of current_token instead, using push_token().  yacc_EOF can result if
          sourced file doesn't end with a newline but does end with an unescaped
          backslash.  Fixes bug reported by Pedro Gimeno
          <pgwr-842@personal.formauri.es>

lib/readline/histfile.c
        - use PARAMS(x) instead of __P(x).  Bug reported by Evan Gates
          <evan.gates@gmail.com>

                                    4/9
                                    ---
execute_cmd.c
        - execute_simple_command: if we haven't already forked, and we have
          created FIFOs, turn off the no-fork optimization in the simple
          command's flags. Originally reported to savannah by Kuang-che Wu as
          https://savannah.gnu.org/support/index.php?108732

                                   4/10
                                   ----
trap.c
        - trap_if_untrapped: new function, sets a trap on a signal if that
          signal is not already trapped
        - maybe_set_debug_trap: new function, sets DEBUG trap to command string
          argument only if it's not already trapped

trap.h
        - maybe_set_debug_trap: new extern declaration


builtins/source.def
        - source_builtin: if the -T option isn't set, use maybe_set_debug_trap
          in the unwind-protect instead of unconditionally restoring the old
          trap string. That means if the sourced file changes the DEBUG trap,
          that new trap will persist instead of being undone when the old
          value is restored. Fixes bug reported by Scott Bronson
          <bronson@rinspin.com>

builtins/evalstring.c
        - parse_string: before we jump to top_level, if we are at the `bottom'
          of the parse_and_execute stack (parse_and_execute_level == 0), call
          top_level_cleanup() before jumping so the right cleanup happens (e.g.,
          cleaning up redirections and other state).  Fixes bug reported by
          Sam Liddicott <sam@liddicott.com>

                                   4/15
                                   ----
jobs.c
        - delete_job: only add J_ASYNC (and not J_FOREGROUND) jobs to the
          bgpids array, since Posix says shells only need to save the status
          of async jobs.  Report and fix from John Fremlin <john@fb.com>

                                   4/17
                                   ----
pcomplib.c
        - COMPLETE_HASH_BUCKETS: increase to 256 since bash-completion is
          over 300 completions by now

variables.c
        - VARIABLES_HASH_BUCKETS: constant used to size shell variables hash
          table instead of relying on hash library default.  Used in calls
          to hash_create in create_variable_tables(), push_temp_var(), and
          push_func_var().  Currently set to 1024 because why not?  From a
          discussion starting at
          https://lists.gnu.org/archive/html/bug-bash/2015-04/msg00089.html
        - initialize_shell_variables: if FUNCTION_IMPORT is not defined, the
          nested conditional compilation causes syntax errors.  Bug and fix
          from Eric Blake <eblake@redhat.com>

configure.ac
        - function-import: fix typo, assign to correct variable.  Found as the
          result of a report by Eric Blake <eblake@redhat.com>

shell.c
        - open_shell_script: check whether or not file argument is a
          directory before opening; Posix says that implementations may open
          a directory with O_RDONLY.  Bug report from
          Eduardo A. Bustamante López <dualbus@gmail.com>

                                   4/19
                                   ----
ulimit.def
        - fix typo in limits[] declaration of `k'

                                   4/20
                                   ----
configure.ac
        - add template definitions set by AC_USE_SYSTEM_EXTENSIONS from a report
          from Andreas Schwab <schwab@linux-m68k.org>

variables.c
        - FUNCTIONS_HASH_BUCKETS: constant used to size the hash tables used for
          shell functions and the text of shell function definitions.  Initially
          set to 512, even though it's a really rare case that someone has more
          than around 150 functions, even with bash-completion

                                   4/21
                                   ----
shell.c
        - main: malloc_set_register: change arg to 0 to disable keeping track of
          allocations and frees in table; change to 1 for malloc debugging on
          demand.  Table is too small to keep effective track of allocations on
          a modern system, need to use something like valgrind

                                   4/22
                                   ----
shell.c
        - main: move cmd_init() (initialize word desc and word list object
          caches) after startup files are read so the cache doesn't get filled
          up with semi-permanent storage for shell functions and variables

execute_cmd.c
        - execute_function: use maybe_set_debug_trap in the same way as source
          builtin change from 4/10 to allow functions to reset a DEBUG trap
          when set -T not in effect.  From a report by Peng Yu
          <pengyu.ut@gmail.com>

                                   4/23
                                   ----
execute_cmd.c
        - execute_disk_command: don't overwrite value of subshell_environment
          by assigning SUBSHELL_FORK; just OR in SUBSHELL_FORK so something
          like SUBSHELL_ASYNC or SUBSHELL_PIPE is preserved

jobs.c
        - wait_for: don't call give_terminal_to if running in a subshell
          environment, not just if running_in_background is set; don't want
          shell functions waiting for a process to complete in a pipeline to
          give the terminal to the wrong process group.  Part of fix for bug
          reported by Valentin Bajrami <valentin.bajrami@gmail.com>
        - make_child: child process should not try to give the terminal to the
          pipeline_pgrp if running as part of a pipeline (SUBSHELL_PIPE in
          subshell_environment); functions in execute_cmd.c don't set that
          flag until after make_child returns and the child process is running.
          Rest of fix for bug reported by Valentin Bajrami
          <valentin.bajrami@gmail.com>

                                   4/24
                                   ----
redir.c
        - redirection_error: if the redirection involves {varname}, only use
          `varname' in the error message if the error code is < 0 (one of the
          internal redirection errors, like ambiguous or bad variable name);
          otherwise the issue is probably with the filename and should be treated
          as usual.  Fixes problem reported by Dr. David Alan Gilbert
          <dgilbert@redhat.com>

configure.ac,config.h.in
        - sys/ioctl.h: add check in AC_CHECK_HEADERS macro, define HAVE_SYS_IOCTL_H

lib/readline/{rltty,terminal}.c
        - sys/ioctl.h: include unconditionally for ioctl declaration, avoid
          issues with `implicit declaration' warnings.  Issue originally
          raised on gdb list by Chen Gang <xili_gchen_5257@hotmail.com>

                                   4/27
                                   ----
lib/malloc/table.c
        - mem_table: now a circular buffer showing the state of the last
          REG_TABLE_SIZE allocations rather than a hash table that quickly
          fills up

builtins/declare.def
        - typeset_builtin: add -n to list of supported options.  Omission
          reported by Valentin Bajrami <valentin.bajrami@gmail.com>

unwind_prot.c
        - use object caches instead of malloc/free to allocate and deallocate
          unwind-protect elements
        - uwp_init: initialize unwind-protect element object cache

unwind_prot.h
        - uwp_init: extern declaration

shell.c
        - main: call uwp_init right after calling cmd_init -- initialize all the
          object caches at the same place

lib/malloc/table.[ch]
        - mlocation_table: new table to keep track of allocation locations by
          file and line, functions to initialize table, record an allocation,
          and dump the table to stderr
        - mregister_alloc: call mlocation_register_alloc to record the location
          (source file/line) for each allocation to pinpoint malloc hot spots
          by number of calls.  More detail than gprof

parse.y
        - set_line_mbstate: replace free/xmalloc pair with xrealloc call
        - read_token_word: call alloc_word_desc instead of xmalloc so we can take
          advantage of the WORD_DESC cache

                                   4/28
                                   ----
execute_cmd.c
        - execute_simple_command: if command execution fails because the command
          is a directory, and the `autocd' option is set, add a `--' argument
          to the constructed `cd' command to protect against command names with
          the same name as options to `cd'.  Report and fix from
          isabella parakiss <izaberina@gmail.com>

                                   4/30
                                   ----
jobs.c
        - printable_job_status, j_strsignal: change calls to strcpy and sprintf
          that write to retcode_name_buffer to use strncpy and snprintf to
          avoid buffer overflows caused by malicious translations.  Bug and fix
          from Trammell Hudson <Trammell.Hudson@twosigma.com>

                                    5/1
                                    ---
strtrans.c
        - ansicstr: make sure the buffer is at least 12 bytes to ensure enough
          space for any eventual call to u32cesc for one multibyte char

                                    5/4
                                    ---
jobs.c
        - wait_for: if an interactive shell is running a loop and waiting for
          a non-builtin command to exit, and the command exits due to SIGINT,
          act as if the shell received the SIGINT as well and break the loop.
          This matches the behavior when the shell is running a builtin command
          in a loop, and when running a non-builtin command outside a loop, and
          seems more broadly useful than running the trap handler over and over
          again.  Report originally from Kaz Kylheku <kkylheku@gnu.org>

builtins/set.def
        - unset_builtin: use different variables for keeping the state of the
          -f and -v options than the loop uses to decide whether or not to
          treat a name as a function or a variable.  Fixes problem with
          unset_function setting `sticking' after you unset a function when
          invoked with no options.  Bug report from Dreamcat4
          <dreamcat4@gmail.com>

shell.c
        - open_shell_script: set running_shell_script to 1, set to 0 in every
          other case (new variable)
        - main: when checking whether or not to call start_debugger, test
          running_shell_script instead of dollar_vars[1].  The goal is to not
          invoke the debugger for interactive shells but allow it to run for
          things like `bash --debugger -i /tmp/script'.  Problem reported by
          Rocky Bernstein <rocky@gnu.org>

lib/readline/histexpand.c
        - history_event_delimiter_chars: new (as yet undocumented) variable
          containing by default characters that can delimit a history event
          specifier without requiring a `:': "^$*%-" as the documentation has
          always said.  Fixes bug reported by Anders Granlund
          <anders.granlund.0@gmail.com>

                                   5/10
                                   ----
lib/glob/gmisc.c
        - match_pattern_char, match_pattern_wchar: if passed an empty string,
          return a match if the first character of the pattern is `*'

subst.c
        - pat_subst: change to allow empty strings to be replaced as long as
          pattern matches empty string.  Report and fix from isabella parakiss
          <izaberina@gmail.com>

                                   5/12
                                   ----
lib/sh/strtrans.c
        - ansic_wshouldquote: make behavior consistent in the event of an
          invalid multibyte sequence: return 1 to the caller so the string
          will be $'...' quoted

builtins/cd.def
        - cd_builtin: print the right error message even if printable_filename
          changes errno (e.g., EILSEQ)

lib/sh/shquote.c
        - sh_backslash_quote: in multibyte locales, even if is_basic does not
          return true, backslash-quote an ASCII character that backslash_table
          says should be quoted.  Part of fix for bug reported by Igor
          Bogomazov <ygrex@ygrex.ru>

bashline.c
        - directory_exists: new function, dequotes the string argument, removes
          any trailing slash, and returns true if the result is a valid
          existing filename
        - bash_filename_stat_hook,bash_directory_completion_hook: use
          directory_exists instead of calling lstat/stat on the quoted
          directory name.  Rest of fix for bug reported by Igor Bogomazov
          <ygrex@ygrex.ru>

                                   5/15
                                   ----
aclocal.m4
        - BASH_CHECK_MULTIBYTE: when checking for locale_charset, add $LIBINTL
          to $LIBS.  If we're using the included lib/intl/libintl.a, it will
          include a version of locale_charset

                                   5/17
                                   ----
lib/readline/bind.c
        - sv_isrchterm: make sure we check for v[end] == 0 while in the loop
          looking for whitespace.  Bug report and fix from Sergio Durigan
          Junior <sergiodj@sergiodj.net>

lib/sh/shmbchar.c
        - mbstrlen,mbsmbchar: move calculation of MB_CUR_MAX out of loop;
          calculate it once at beginning

lib/sh/mbscmp.c
        - mbscmp: move calculation of MB_CUR_MAX out of loop; calculate it once
          at beginning

lib/sh/mbscasecmp.c
        - mbscasecmp: move calculation of MB_CUR_MAX out of loop; calculate it
          once at beginning

lib/sh/shquote.c
        - sh_backslash_quote: move calculation of MB_CUR_MAX out of loop;
          calculate it once at beginning

lib/sh/casemod.c
        - sh_modcase: move calculation of MB_CUR_MAX out of loop; calculate it
          once at beginning

subst.c
        - expand_word_internal: move calculation of MB_CUR_MAX out of loops;
          calculate it once at beginning of function (XXX should use
          locale_mb_cur_max)

                                   5/22
                                   ----
lib/readline/rlmbutil.h
        - _rl_wcwidth: new function, short-circuits wcwidth calls for ASCII
          printable characters, returns 1 for those
        - WCWIDTH: call _rl_wcwidth instead of wcwidth

lib/readline/display.c
        - rl_redisplay: move calculation of MB_CUR_MAX out of loop; calculate
          it once at beginning.  Report and patch from Ole Laursen
          <ole.laursen@gmail.com>

                                   5/24
                                   ----
lib/readline/text.c
        - rl_insert: change to attempt to batch-insert pending typeahead (not
          pushed input or input from a macro) that maps to rl_insert.  An
          attempt to suppress redisplay until readline reads all typeahead --
          pasted input, for instance.  Inspired by report from Ole Laursen
          <ole.laursen@gmail.com>.  XXX - need to make this a bindable
          variable; already controlled by _rl_optimize_typeahead

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

lib/readline/doc/{hstech.texi,history.3}
        - next_history: clarify under what circumstances the history offset is
          incremented; suggestion from Glenn Golden <gdg@zplane.com>

print_cmd.c
        - print_arith_command: should be compiled in if either DPAREN_ARITHMETIC
          or ARITH_FOR_COMMAND is defined.  Report from Flavio Medeiros
          <flaviomotamederios@gmail.com>

flags.c
        - change_flag: new variable verbose_flag, set when `v' flag modified;
          sets value of echo_input_at_read correspondingly

flags.h
        - verbose_flag: new extern declaration

shell.c
        - long_options: --verbose now sets verbose_flag
        - main: set echo_input_at_read from verbose_flag after parsing any
          long options

builtins/fc.def
        - fc_builtin: don't unwind-protect echo_input_at_read directly; set it
          to 1 before calling fc_execute_file as before, and reset it to value
          of global verbose_flag using set_verbose_flag called from an
          unwind_protect.  Report from isabella parakiss <izaberina@gmail.com>

builtins/shopt.def
        - shopt_set_debug_mode: new function, called when the extdebug shell
          option changes.  Right now, it sets function_trace_mode when extdebug
          is enabled, and turns off when extdebug is disabled.  The
          documentation has always said that shopt does this.  Report from
          Peng Yu <pengyu.ut@gmail.com>

                                   5/27
                                   ----
findcmd.[ch]
        - add support for EXECIGNORE shell variable, list of extglob patterns
          that prevent matching filenames from being identified as executable
          files

variables.c
        - EXECIGNORE: arrange for findcmd.c:setup_exec_ignore to be called when
          $EXECIGNORE changes

variables.h
        - sv_execignore: extern declaration

doc/{bash.1,bashref.texi}
        - document EXECIGNORE variable

                                   5/28
                                   ----
lib/readline/callback.c
        - rl_callback_sigcleanup: new function, cleans up and unsets any state
          rl_callback_read_char uses.  Intended to be used after a signal

lib/readline/signals.c
        - _rl_handle_signal: call rl_callback_sigcleanup on SIGINT.  Fixes bug
          reported to python group by Martin Panter <vadmium+floss@gmail.com>

lib/readline/isearch.c
        - _rl_isearch_cleanup: now a public function so rl_callback_cleanup can
          call it

lib/readline/search.c
        - _rl_nsearch_cleanup: now a public function so rl_callback_cleanup can
          call it

lib/readline/rlprivate.h
        - _rl_[in]search_cleanup: extern declarations

lib/readline/readline.h
        - rl_callback_sigcleanup: new extern declaration

lib/readline/doc/rltech.texi
        - rl_callback_sigcleanup: documented

lib/readline/readline.h
        - bump readline version to 7.0 due to addition of rl_callback_sigcleanup

                                   5/29
                                   ----
builtins/declare.def
        - declare_internal: if we are trying to change attributes or value for
          a nameref variable whose value points to an unset variable, make
          sure we create a new variable whose name is the value of the nameref
          variable. That is,

                declare -n foo=bar
                unset foo       # unsets bar
                declare -i foo

          should create a (invisible) variable named `bar' with the integer
          attribute.  Fixes problem reported by Greg Wooledge
          <wooledg@eeg.ccf.org>

builtins/set.def
        - unset_builtin: if we find a nameref variable when we look it up with
          find_variable (the returned variable has a name different from what
          we looked up), make sure we use that new name for the rest of the
          function rather than rely on unbind_variable to do the same thing as
          find_variable.  Fixes problem reported by Greg Wooledge
          <wooledg@eeg.ccf.org>
        - unset_builtin: if we try to unset a nameref variable whose value is
          not a set variable, make sure we don't try to unset the nameref
          itself, but rather the variable it points to.  This ensures that the
          following always works as it should

                declare -n foo=bar
                unset foo       # unsets bar and leaves foo unchanged

lib/readline/funmap.c
        - vi-insertion-mode: make sure it maps to rl_vi_insert_mode, which is
          actually what the `i' keybinding in vi_movement_keymap maps to.
          Cosmetic fix from isabella parakiss <izaberina@gmail.com>

                                    6/2
                                    ---
general.c
        - conf_standard_path: moved get_standard_path here from command.def; made
          public function

general.h
        - conf_standard_path: extern declaration


                                    6/3
                                    ---
parse.y
        - parse_matched_pair: make sure that command substitution constructs
          within ${...} expansions are parsed as such using parse_comsub, so
          the P_FIRSTCLOSE flag doesn't stop parsing if a right brace appears
          within the comsub.  Report from Christos Zoulas <christos@zoulas.com>

findcmd.c
        - search_for_command: take two new flags for FLAGS arg: CMDSRCH_STDPATH,
          which means use the command -p path, and CMDSRCH_TEMPENV, currently
          unused.  Existing flag value of 1 now CMDSRCH_HASH
        - search_for_command: don't set `path' to NULL if it wasn't found in
          the temporary environment; we can use it later
        - search_for_command: look for the hashed file if temp_path == 0, not
          if we set path back to 0 (or path lookup failed)
        - search_for_command: just call find_user_command_in_path with a
          pathlist argument that's set depending on the flags passed
        - find_in_path: new function, just calls find_user_command_in_path at 
          this point
        - search_for_command: don't put non-existent files into the hash table

findcmd.h
        - CMDSRCH_*: new flags for search_for_command
        - find_in_path: extern declaration

execute_cmd.c
        - execute_disk_command: check for CMD_STDPATH and call search_for_command
          with CMDSRCH_STDPATH if it's set

builtins/command.def
        - command_builtin: if -p given without -v or -V, set the CMD_STDPATH
          flag in the simple command we construct from the rest of the
          argument list.  This fixes the command -p cmd issue with changing
          $PATH for the duration  of `cmd's execution reported by
          <sdowdy@rap.ucar.edu>

builtins/common.h
        - CDESC_STDPATH: new flag for describe_command; means to use standard
          path for command -pv or -pV

builtins/command.def
        - command_builtin: if -p given with -v or -V, pass the CDESC_STDPATH
          flag to describe_command

builtins/type.def
        - describe_command: if given the CDESC_STDPATH flag, use find_in_path
          with the conf_standard_path() result. Since `all' will never be on
          with this flag, at least not yet, we can allocate and free the path
          list.  Fixes the bug of a temporary environment value for PATH
          preceding a `command -pv' or `command -pV' persisting when the
          command finishes and means we use fewer unwind-protects

                                    6/4
                                    ---
Makefile.in (plus other Makefile.ins)
        - VPATH: remove `.' from VPATH value.  It's not needed any more and it
          trips a GNU make 4.1 bug on Cygwin.  Report and fix from Eric Blake
          <eblake@redhat.com>

lib/readline/histfile.c
        - history_tempfile: new function, takes history file name as template
          and creates a temp file name including the PID
        - history_truncate_file, history_do_write: instead of creating backup
          and restoring it on failure, use history_tempfile to create a temp
          file name, write to it, then rename to original history filename
          (handling symlinks using history_restore()).  Original report and
          patch from Russell Stuart <russell-savannah@stuart.id.au>

doc/{bash.1,bashref.texi}
        - ulimit: clarify that -c and -f are in increments of 512 bytes when
          in posix mode.  Fix from Robin Johnson <robbat2@gentoo.org> via
          <vapier@gentoo.org>

                                    6/9
                                    ---
execute_cmd.c
        - execute_in_subshell: don't call restore_default_signal for the exit
          trap, reset_signal_handlers already does the right thing and keeps
          the trap string around; no need to kill trap string.  Bug report
          from Miroslav Koskar <mk@mkoskar.com>

                                   6/11
                                   ----
nojobs.c
        - find_proc_slot: now takes pid as an argument to avoid finding old
          procs when pids wrap around
        - add_pid: pass pid to find_proc_slot to avoid multiple instances of
          the same pid in the list when pids wrap around.  Fixes bug reported
          by Roy Keene <rkeene@rkeene.org>

execute_cmd.c
        - REAP: test for job_control == 0 also to determine whether or not
          to call reap_dead_jobs, since shells without job control enabled
          don't report on background process status

doc/bash.1,lib/readline/doc/hsuser.texi
        - history: clarify documentation of -a option to note that it will not
          append the same line to the history file more than once.  Fixes
          problem reported by Reuben Thomas <rrt@sc3d.org>

                                   6/12
                                   ----
execute_cmd.c
        - execute_in_subshell: don't bother decrementing subshell_level before
          this returns; the caller will just exit.  This means that
          $BASH_SUBSHELL will have consistent values in the subshell and any
          subsequent exit trap.  Fixes bug reported by Miroslav Koskar
          <mk@mkoskar.com>
        - shell_execve: before longjmp to subshell_top_level, call reset_parser
          to free up any input line and stack of pushed strings

parse.y
        - mk_alexpansion: if the last character of the alias is a shell
          metacharacter, don't add a space to the string following the alias
          value, since that will change the meaning of the command.  THIS IS
          NOT BACKWARDS COMPATIBLE AND MAY REQUIRE REVERTING. Inspired by an
          email message from Jilles Tjoelker <jilles@stack.nl> to austin
          group

                                   6/13
                                   ----
subst.c
        - dequote_string: don't turn strings consisting of a single CTLESC
          into empty strings; return them unmodified.  The idea is that there
          is nothing to quote.  This means that something like
                c=$'\001'
                x=$c
          results in x containing '\001' when IFS=$'\001'.  See if this will
          cause problems by adding a debugging statement in the code

                                   6/15
                                   ----
parse.y
        - CHECK_FOR_RESERVED_WORD: don't return ESAC when you read `esac'
          after a `|' while in a case pattern list (parser_state & PST_CASEPAT).
          This is Posix grammar rule 4
          (http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_10_02)

                                   6/16
                                   ----
jobs.c
        - wait_for: make sure we queue SIGCHLD signals if a SIGCHLD trap
          handler is running (signal_in_progress or IMPOSSIBLE_TRAP_HANDLER),
          since we allow recursive trap invocations now
        - wait_for: make sure we treat SIGCHLD as trapped if the trap handler
          is set to IMPOSSIBLE_TRAP_HANDLER so we don't miss signals during
          calls to run_sigchld_trap()

trap.c
        - run_pending_traps: since we allow recursive trap handler invocations,
          make sure we set pending_traps[SIGCHLD] to 0 while we mark the
          signal handler in progress (SIG_INPROGRESS) and don't reset it to 0
          after run_sigchld_trap returns in case more SIGCHLDs have been
          queued while it's running

                                   6/22
                                   ----
lib/readline/readline.c
        - _rl_dispatch_subseq: if we shadowed any function, not just self-
          insert, bind that function to the key we shadowed and dispatch on it.
          This preserves and dispatches off the original key, not ANYOTHERKEY,
          and makes sure we are dispatching from a keymap with the right key
          binding.  Fixes bug reported by Carlos Pita
          <carlosjosepita@gmail.com>

                                   6/23
                                   ----
bashline.c
        - attempt_shell_completion: don't read past the end of rl_line_buffer
          while skipping assignment statements before command names.  Fix for
          bug reported by Hanno Böck <hanno@hboeck.de>

lib/readline/parens.c
        - _rl_enable_paren_matching: make paren matching work in vi insert
          mode. Really, this time.  Bug report from Carlos Pita
          <carlosjosepita@gmail.com>

                                   6/29
                                   ----
parse.y
        - parse_comsub: when starting to parse a word, make sure that we set
          lex_rwlen to 0 along with lex_wlen if we are in a position where we
          can read a reserved word.  Fixes bug reported by  Nathan Neulinger
          <nneul@neulinger.org>

                                   6/30
                                   ----
sig.h
        - include <signal.h> unconditionally and rely on guards in sig.h to
          keep from including it more than once.  Irix 6.5 defines SIG_DFL
          in other files and defeats the test of SIG_DFL.  Fixes bug
          reported by Klaus Ziegler <klausz@haus-gisela.de>

alias.c
        - ALIAS_HASH_BUCKETS: table size increased to 64

                                    7/7
                                    ---

{jobs,nojobs}.c
        - wait_sigint_cleanup: new function, to be called by longjmp targets
          for wait_intr_buf. Performs any necessary cleanup of internal waitchld
          state before going back to top level

jobs.h
        - wait_sigint_cleanup: new extern declaration

builtins/wait.def
        - wait_builtin: call wait_sigint_cleanup after longjmp back to
          wait_intr_buf on interrupt

[bash-4.4-alpha frozen]

                                    7/7
                                    ---
bashline.c
        - attempt_shell_completion: when skipping assignment statements, don't
          skip past rl_point to find the word on which to perform programmable
          completion.  Fixes bug reported by Hanno Böck <hanno@hboeck.de>

                                   7/10
                                   ----

pcomplib.c
        - compspec_copy: set the refcount on the copy to 1, since it's a freshly
          allocated copy and there are no other pointers to it.  Fixes memory
          leak from gen_progcomp_completions

lib/readline/complete.c
        - printable_part: if the pathname passed is just `/', just return it
          instead of potentially reading before the `/'.  Fixes bug reported
          by Hanno Böck <hanno@hboeck.de>

                                   7/11
                                   ----
support/man2html.c
        - change calls to malloc to use xmalloc; provide standard xmalloc
          definition.  Report from Bill Parker <wp02855@gmail.com>

builtins/wait.def
        - wait_intr_flag: set to denote validity of wait_intr_buf as target
          for longjmp; reset by WAIT_RETURN macro; should always be 0 when
          wait_builtin returns

quit.h
        - CHECK_WAIT_INTR: now also checks wait_intr_flag to ensure valid state
          of wait_intr_buf before sh_longjmp

{jobs,nojobs}.c
        - wait_intr_flag: extern declaration for use by CHECK_WAIT_INTR

sig.c
        - wait_intr_flag: set back to 0 every place the shell resets state after
          a jump to top_level
        - sigint_sighandler: only set wait_signal_received if wait_intr_flag
          indicates that the wait builtin has correctly set wait_intr_buf.
          Final fix for bug reported by Ondrej Oprala <ooprala@redhat.com>

subst.c
        - parameter_brace_expand: fix so that ${!vvv@} is not interpreted as
          introducing a `@' operator, but instead retains its meaning as all
          variables whose name begins with vvv.  Fixes bug reported by
          konsolebox <konsolebox@gmail.com>

                                   7/14
                                   ----
execute_cmd.c
        - execute_connection: remove the fork optimization from and AND_AND
          and OR_OR cases; it has trouble with `a && b && c', since the `&&'
          is left-associative.  Putting that code here can result in unwanted
          fork optimizations since the `b' will end up as `second' on a
          recursive call to execute_command.  Bug reported by Mike Frysinger
          <vapier@gentoo.org>

builtins/evalstring.c
        - optimize_fork: moved code from execute_connection to here; checks
          whether the RHS of a && or || passes the suppress_fork() tests and
          turns on the NO_FORK bit if so
        - parse_and_execute: if suppress_fork() tests fail, check whether the
          command to be executed is a connection and attempt to optimize the
          fork for the right side using optimize_fork().  The key is dealing
          with the entire command passed to `bash -c' or `eval'

builtins/common.h
        - optimize_fork: new extern declaration

execute_cmd.c
        - execute_command_internal: enable code put in to undo redirections
          before exiting the shell due to `set -e' in the case of a shell
          function that gets command-not-found or a syntax error.  Reported
          back in May, 2014 by Mark Ferrell <major@homeonderanged.org>

bashhist.c
        - bash_history_inhibit_expansion: enable change from 1/10 that skips
          over history expansion character in command and process
          substitution

                                   7/15
                                   ----
lib/readline/{history,undo}.c
        - replace_history_data now _hs_replace_history_data

                                   7/16
                                   ----
lib/readline/readline.c
        - make sure _rl_to_lower doesn't ever get characters that are outside
          of its valid range by casting arg to unsigned char

lib/readline/colors.h
        - change completion prefix color (C_PREFIX) to be the same as C_SOCK,
          which is less likely to collide with file type colorings (magenta)

lib/readline/complete.c
        - fnprint: now takes an additional argument: the full, expanded pathname
          corresponding to the `toprint' argument
        - fnprint: don't zero out prefix_bytes if we're not printing the
          ellipisis but we still want to use prefix_bytes for displaying
          the common prefix in a color
        - print_filename: move colored-stats display responsibility into fnprint
        - fnprint: change so colored-prefix and colored-stats can cooperate
          and display filenames with multiple colors: one for the prefix and
          one for the file type.  The prefix is displayed in the prefix color
          and the remainder of the pathname, if any, is displayed in the color
          corresponding to the file type.  Report and suggestion from Mike
          Frysinger <vapier@gentoo.org>

                                   7/17
                                   ----
lib/readline/readline.[ch]
        - rl_readline_state: now unsigned long, prepare for more than 32 states


                                   7/18
                                   ----
lib/readline/history.h
        - history_offset: now declared here, was always a global variable
        - copy_history_entry: now declared here, part of the public interface
        - alloc_history_entry: now declared here, part of the public interface

                                   7/20
                                   ----
lib/readline/readline.h
        - RL_STATE_CHARSEARCH: new state, for vi mode character search.  Was
          previously handled by simply setting _rl_callback_func

lib/readline/vi_mode.c
        - rl_domove_motion_callback: split into two functions, remaining code
          after _rl_dispatch call goes into new function
          _rl_vi_domove_motion_cleanup
        - rl_vi_char_search: set RL_STATE_CHARSEARCH
        - rl_vi_char_search: sets `i2' member of callback data to the key used
          to invoke the char search
        - _rl_vi_callback_char_search: unset RL_STATE_CHARSEARCH after reading
          the character to find
        - _rl_vi_domove_motion_cleanup: make sure RL_STATE_VIMOTION is unset in
          all cases where this function returns
        - _rl_vi_domove_motion_cleanup: use `end' member of vi motion context
          as value of rl_end to restore after adding blank at end of line in
          rl_domove_motion_callback; avoids need to keep `old_end' and somehow
          pass it between the two functions

lib/readline/rlprivate.h
        - _rl_vi_domove_motion_cleanup: new extern declaration

lib/readline/callback.c
        - rl_callback_read_char: handle RL_STATE_CHARSEARCH, including case
          where char search is vi motion command for d/c/y/m and RL_STATE_VIMOTION
          is set when this is called.  Last of set of fixes for bug reported
          by Carlos Pita <carlosjosepita@gmail.com> with vi-mode `dty' command
          in callback mode

                                   7/21
                                   ----
subst.c
        - command_substitute, process_substitute: add QUIT call in the child
          after restoring original signal handlers to catch post-fork SIGINT
          or terminating signal

jobs.c,nojobs.c
        - make_child: after forking, clear interrupt_state in child
          before restoring signal mask so children get their own set of
          interrupts

                                   7/22
                                   ----
lib/sh/shquote.c
        - sh_double_quote: since all uses of the return value from this function
          are for display and not subject to subsequent expansion, we don't
          need to protect CTLESC and CTLNUL with CTLESC.  Bug report and fix
          from isabella parakiss <izaberina@gmail.com>

parse.y
        - decode_prompt_string: need to protect literal instances of CTLESC
          and CTLNUL with CTLESC, even if they are not coming out of one of
          the backslash-expansions

subst.c
        - make_internal_declare: fixed memory leak; make_internal_declare should
          free the memory it allocates to construct the word list.  From Red
          Hat bug 1245233; https://bugzilla.redhat.com/show_bug.cgi?id=1245233

lib/readline/readline.c
        - _rl_dispatch_subseq: when checking whether an ESC in vi insert mode
          should be treated as part of a key sequence or as a single char,
          make sure we are getting input from the keyboard before we check
          _rl_input_queued().  If we are getting input from a macro, this
          causes a needless delay.  Report from Carlos Pita
          <carlosjosepita@gmail.com>

                                   7/23
                                   ----
input.c
        - save_bash_input: before checking to see whether or not a new fd has a
          stale associated buffer, make sure that the new fd is within bounds.
          Bug report and fix from Alexey Makhalov <makhaloff@gmail.com>


                                   7/24
                                   ----
doc/{bash.1,bashref.texi}
        - note that the `return' builtin accepts arguments beginning with `-'
          without requiring `--'

                                   7/27
                                   ----
examples/loadables/Makefile.in
        - add variables and targets to support `make install'; installs
          supported builtins in $(libdir)/bash

                                   7/28
                                   ----
lib/readline/{readline,rlprivate}.h, lib/readline/display.c
        - rearrange some structure members for better alignment and to reduce
          padding.  Fix from <git-dpa@aegee.org>

tests/run-*
        - use BASH_TSTOUT instead of hardcoded /tmp/xx as output file

trap.[ch]
        - maybe_set_error_trap: set a trap for the ERR trap if it is not already
          trapped; similar to maybe_set_debug_trap back from 4/10

lib/malloc/malloc.c
        - internal_free: make sure `ubytes' is initialized if MALLOC_WATCH is
          defined and we'll be passing it to _malloc_ckwatch.  Report from
          Flavio Medeiros <flaviomotamederios@gmail.com>

execute_cmd.c
        - execute_function: use maybe_set_error_trap in the same way as
          maybe_set_debug_trap.  Fixes bug reported by David Waddell
          <David.Waddell@owmobility.com>

                                   7/29
                                   ----
jobs.c
        - wait_for: no longer need to call job_signal_status when checking
          whether a comsub shell reaped a child that died due to SIGINT; code
          now uses child_caught_sigint

                                   7/30
                                   ----
builtins/exec.def
        - exec_builtin: after call to restore_original_signals, need to call
          default_tty_job_signals to undo changes done by initialize_job_signals.
          Fix for problem reported by Andreas Schwab <schwab@suse.de>

doc/{bash.1,bashref.texi}
        - clarify definition of metacharacter to explicitly include newline;
          prompted by report from George Gallo <georgeggallo@gmail.com>

                                    8/3
                                    ---
lib/readline/search.c
        - _rl_free_history_entry: should be void, not int.  Report from
          Dilyan Palauzov <dilyan.palauzov@aegee.org>

general.h
        - sh_load_func_t, sh_unload_func_t: new function pointer types, used by
          enable for load and unload hook functions

builtins/enable.def
        - dyn_load_builtin: attempt to execute a function named
          BUILTIN_builtin_load, where BUILTIN is the name of the command being
          loaded.  If that function returns 0, the load fails
        - dyn_unload_builtin: attempt to execute a function named
          BUILTIN_builtin_unload, where BUILTIN is the name of the command
          being unloaded.  It offers a dynamic builtin a way to clean up after
          itself.  Inspired by suggestion from Piotr Grzybowski
          <narsil.pl@gmail.com> in response to a bug report from isabella
          parakiss <izaberina@gmail.com>

                                    8/6
                                    ---
lib/readline/colors.[ch]
        - _rl_print_color_indicator: now takes `const char *' argument

lib/readline/complete.c
        - colored_stat_start: now takes `const char *' argument

lib/malloc/table.h
        - ma_table_t: `file' member is now `const char *'

lib/malloc/table.c
        - mlocation_register_alloc: make sure variable assigned to `file' in
          ma_table_t is of type `const char *'.  Fixes from Dilyan Palauzov
          <dilyan.palauzov@aegee.org>

lib/termcap/termcap.[ch]
        - tputs: should return int instead of void

lib/readline/readline.h
        - RL_STATE_DONE: correct value, avoid collision

lib/readline/vi_mode.c
        - _rl_vi_redoing: now global, added _rl_ prefix to `vi_redoing'

lib/readline/readline.c
        - _rl_subseq_result: call _rl_dispatch_subseq instead of rl_dispatch to
          avoid changing _rl_dispatching_keymap
        - _rl_subseq_result: in the -2 case, set _rl_dispatching_keymap to the
          map passed as an argument.  Without this, vi mode doesn't call
          rl_vi_set_last when it should
        - _rl_dispatch_subseq: if redoing a vi mode command with `.'
          (_rl_vi_redoing != 0) in callback mode and we're indirecting into
          another keymap that has shadowed the key corresponding to the command
          we are redoing, just call _rl_subseq_result immediately: vi redo
          doesn't need to read any additional input, and rl_vi_redo assumes
          that a single call to rl_dispatch is sufficient.  Fixes bug reported
          by Carlos Pita <carlosjosepita@gmail.com>

                                    8/7
                                    ---
subst.c
        - parameter_brace_expand: if a substitution (parameter expansion) error
          occurs, and shell_compatibility_level is <= 43, return expansion error
          as in all previous versions.  If shell_compatibility_level is > 43,
          a posix-mode non-interactive shell will consider this a fatal error.
          Problem reported by Christian Neukirchen <chneukirchen@gmail.com>

doc/bashref.texi
        - documented that word expansion errors cause fatal errors in posix mode
          non-interactive shells

                                    8/8
                                    ---
subst.h
        - SD_COMPLETE: skip_to_delim being called as part of word completion
        - SX_COMPLETE: one of the string_extract functions being called as
          part of word completion

bashline.c
        - find_cmd_start,find_cmd_end,find_cmd_name: call skip_to_delim with
          SD_COMPLETE flag

subst.c
        - skip_double_quoted: takes new flags argument; changed callers
        - skip_double_quoted: if flags argument includes SX_COMPLETE, pass it
          to extract_command_subst
        - extract_command_subst: if flags&SX_COMPLETE, call
          extract_delimited_string instead of xparse_dolparen, since completion
          may call this for unterminated command substitutions.  Fixes
          (imperfectly) bug reported by Ingo Ruhnke <grumbel@gmail.com>
        - skip_to_delim: if passed the SD_COMPLETE flag, pass the SX_COMPLETE
          flag to skip_double_quoted 
        - char_is_quoted: pass SX_COMPLETE flag to skip_double_quoted
        - unclosed_pair: pass SX_COMPLETE flag to skip_double_quoted

                                    8/9
                                    ---
execute_cmd.c
        - time_command: catch longjmps to top_level and print command timing
          statistics even after a jump to top_level.  Fixes issue reported by
          Sam Watkins <sam@nipl.net>

                                   8/10
                                   ----
config-top.h
        - OPENLOG_OPTS: if SYSLOG_HISTORY is defined, define to LOG_PID, so
          each message is tagged with the pid

bashhist.h
        - bash_syslog_history: the first time it's called, call openlog with
          OPENLOG_OPTS and SYSLOG_FACILITY

                                   8/11
                                   ----
doc/{bash.1,bashref.texi}
        - GROUPS,FUNCNAME: change description to note that assignments are
          silently ignored, but do not return an error (which would constitute
          an assignment error and cause posix mode shells to abort).  Problem
          pointed out by Grzegorz Bajson <gbajson@gmail.com>

                                   8/12
                                   ----
subst.c
        - parameter_brace_expand_indir: if the value of the indirectly expanded
          variable isn't something that the shell would expand if it were inside
          ${}, error out right away before calling parameter_brace_expand_word.
          Fixes problem reported by isabella parakiss <izaberina@gmail.com>
        - parameter_brace_expand: handle returning &expand_wdesc_error or
          &expand_wdesc_fatal from parameter_brace_expand_indir in case it does
          that someday

                                   8/13
                                   ----
jobs.c
        - {save,restore}_pipeline: saved_pipeline now a linked list of pipelines,
          new ones allocated in save_pipeline and freed in restore_pipeline.
          This allow multiple nested calls to save_pipeline (e.g., in traps
          and then in process substitution).  Fix for bug reported by isabella
          parakiss <izaberina@gmail.com>

print_cmd.c
        - named_function_string: if printing a function with the same name as a
          reserved word, add the `function ' keyword before the name to avoid
          parsing problems when trying to reuse it as input.  Fix for bug
          reported by isabella parakiss <izaberina@gmail.com>

                                   8/14
                                   ----
lib/readline/text.c
        - rl_insert: when optimizing typeahead, make sure we set rl_last_func
          ourselves if we set pending input, since the mainline code path
          won't set rl_last_func if input is pending.  Fixes bug reported by
          Hiroo Hayashi <hiroo.hayashi@computer.org>

                                   8/15
                                   ----
builtins/type.def
        - describe_command: if using the short description (CDESC_SHORTDESC) in
          posix mode, describe posix special builtins as such.  Requested by
          Stephane Chazelas <stephane.chazelas@gmail.com>

builtins/enable.def
        - BASH_LOADABLES_PATH: a colon-separated list of directories where bash
          looks for loadable builtins specified as arguments to `enable -f'

doc/{bash.1,bashref.texi}
        - BASH_LOADABLES_PATH: document new shell variable

configure.ac,Makefile.in,builtins/Makefile.in
        - loadablesdir: set in configure, substitute into Makefiles.  Reserved
          for future use

                                   8/18
                                   ----
subst.c
        - shell_expand_word_list: if make_internal_declare fails, make sure to
          propagate that error return back and make the assignment statement
          fail. Fixes seg fault reported by Sergey Tselikh <stselikh@gmail.com>

                                   8/20
                                   ----
builtins/declare.def
        - declare_internal: made a slight tweak to the warning message about
          quoted compound assignments by printing it only if the array (indexed
          or assoc) does not already exist

                                   8/21
                                   ----
braces.c
        - mkseq: call strvec_dispose before throw_to_top_level if we saw SIGINT
          to avoid a memory leak

trap.c
        - maybe_set_return_trap: set the RETURN trap to string if it's not
          already trapped, in the same way as the debug and error traps

execute_cmd.c
        - execute_function: use maybe_set_return_trap to allow functions to set
          return traps that persist across calls even if function tracing is
          enabled

lib/readline/input.c
        - rl_gather_tyi: make sure errno reset to 0 after select call, for
          ioctl and read
        - rl_gather_tyi: if read returns -1/EIO, return -1
        - rl_read_key: if rl_gather_tyi returns -1/EIO, return READERR if in
          RL_STATE_READCMD (reading command in readline_internal_char), EOF
          if not (like rl_getc). Continue to return '\n' on other errors;
          rl_done = 1 in any case.  Fix for issue reported by
          Lubomir Rintel <lkundrak@v3.sk>

lib/readline/{misc,text,vi_mode}.c
        - fix return values from rl_read_key to handle < 0

                                   8/22
                                   ----

parse.y
        - parsing_redirection: macro that expands to true if the last read
          token (always passed as an argument) is a redirection token that
          will leave us reading a word that's the target of the redirection
        - command_token_position: make sure that even if the parser state
          indicates we are reading a simple command (PST_REDIRLIST), we do
          not perform alias expansion on a WORD that is part of a redirection,
          using parsing_redirection() to do so.  Fixes but reported to Red Hat
          by Robert Alm Nilsson <rorialni@gmail.com>
          https://bugzilla.redhat.com/show_bug.cgi?id=795795

builtins/declare.def
        - declare_internal: only print the warning now if the variable is not
          already an array or if we are not creating an array with -a or -A,
          cuts down the spurious warnings
        - declare_internal: even if the rhs of the assignment looks like a
          compound array, if we're not assigning to an existing array or we're
          not creating an array, make it an array subscript assignment.  This
          means things like declare a[1]='(foo)' and a[1]='(foo)' behave
          identically

builtins/help.def
        - wdispcolumn: change use of displen and add new dispchars variable to
          deal with locales where each wide character does not take up one
          column position.  Fix for bug reported by Mingye (Arthur) Wang
          <arthur200126@hotmail.com>

                                   8/23
                                   ----
sig.c
        - sigint_sighandler: if we get a SIGINT while this_shell_builtin ==
          wait_builtin, perform the special handling only if wait_intr_flag
          is non-zero, don't just use it to set wait_sigint_received.  This
          makes sure we run bashline_set_event_hook.  Fixes bug reported by
          isabella parakiss <izaberina@gmail.com>

                                   8/25
                                   ----
subst.h
        - SD_HISTEXP: new flag for skip_to_delim, indicates we are looking for
          the history expansion character (special double quote handling)
        - skip_to_delim: handle SD_HISTEXP flag, changes double quote handling
          to be similar to history library: don't call skip_double_quote, make
          sure single quotes aren't special in double quotes, but continue to
          skip over $(), ${}, and other similar constructs

                                   8/27
                                   ----
support/bash.pc.in
        - new file, pkgconfig template for bash, installed to support nascent
          loadable builtins dev environment

examples/loadables/Makefile.inc
        - new file, example Makefile with correct definitions for loadable
          builtin development

configure.ac
        - headersdir: directory where headers get installed to support loadable
          builtin development
        - examples/loadables/Makefile.inc, support/bash.pc: create 

Makefile.in
        - INSTALLED_HEADERS, INSTALLED_BUILTINS_HEADERS, INSTALLED_INCFILES,
          CREATED_HEADERS: new variables holding names of include files to
          install into $(headersdir) for loadable builtin development
        - install-headers,install-headers-dirs: new targets to support
          installing headers into $(headersdir) and subdirectories for loadable
          builtin development
        - uninstall-headers: target to uninistall headers in $(headersdir)
        - uninstall: call uninstall-headers whether or not install-headers
          was done; add uninstall in examples/loadables
        - install: add install in examples/loadables
        - clean: add clean in examples/loadables

examples/loadables/Makefile.in
        - install-supported, install-unsupported: new targets, make install
          chooses one based on $(SHOBJ_STATUS)
        - install-supported: now cds to the top level build directory and
          installs the header files
        - install-supported: now installs Makefile.inc to $(loadablesdir) as
          an example
        - uninstall-supported,uninistall-unsupported: uninstall targets,
          make uninstall chooses one based on $(SHOBJ_STATUS)

                                   8/31
                                   ----
lib/glob/Makefile.in
        - CPPFLAGS: move after ${INCLUDES} so library-specific include paths
          take precedence.  This is what the other parts of the shell do.
          Report from Poor Yorick <org.gnu.lists.bug-bash@pooryorick.com>

builtins/read.def
        - reset_alarm: cancel alarm before restoring signal handler to avoid
          possible race condition.  Report and fix from Oleg Popov
          <dev-random@mail.ru>

subst.c
        - string_extract_verbatim: if SEPARATORS is "'", don't short-circuit
          to string_extract_single_quoted unless the SX_NOCTLESC flag is set.
          Callers expect this function to honor CTLESC, even to quote a single
          quote.  Fixes bug reported by isabella parakiss <izaberina@gmail.com>
          and several others

                                    9/2
                                    ---
include/chartypes.h
        - TOCTRL: handle '?' by special-casing it to 0x7f.  Fixes a problem
          with $'\c?' reported by Helmut Karlowski <helmut.karlowski@ish.de>

redir.c
        - write_here_string: don't word-split the here string document.  The
          bash documentation has always said this doesn't happen, even though
          bash has done so for years, and other shells that implement here-
          strings don't perform any word splitting.  The practical effect is
          that sequences of IFS characters are collapsed to spaces.  Fixes
          bug reported by Clint Hepner <clint.hepner@gmail.com>

                                    9/3
                                    ---
doc/{bash.1,bashref.texi}
        - add \? to the list of backslash escapes expanded by $'...' ANSI-C
          quoting.  It was expanded but not documented

lib/readline/util.c
        - _rl_audit_tty: updated from Red Hat patch

lib/readline/readline.c
        - HAVE_DECL_AUDIT_USER_TTY: correct #define check

                                   9/13
                                   ----
shell.c
        - read_from_stdin: make sure value set to 1 appropriately if the shell
          is reading from standard input, as Posix seems to specify (?)

lib/readline/kill.c
        - _rl_copy_to_kill_ring: don't assume that rl_kill_ring has been
          allocated if _rl_last_command_was_kill is non-zero; make sure it's
          non-null before indexing into it

                                   9/15
                                   ----
variables.c
        - initialize_shell_variables: cope with a NULL env pointer.  Fixes bug
          reported by ziyunfei <446240525@qq.com>

                                   9/16
                                   ----
builtins/exec.def
        - exec_builtin: if -c is supplied, pass an empty array instead of a NULL
          pointer to shell_execve

variables.c
        - set_pwd: only believe $PWD if it begins with a slash; try to
          canonicalize it and set it to physical path if canonicalization fails.
          Reported by ziyunfei <446240525@qq.com>

                                   9/17
                                   ----
subst.c
        - do_compound_assignment: make sure to dispose of word list generated
          by expand_compound_array_assignment; fixes memory leak reported in
          https://bugzilla.redhat.com/show_bug.cgi?id=1264101

variables.c
        - adjust_shell_level: clamp the value of shell_level at 1000 and reset
          there, instead of > 1000, since the itos replacement code doesn't
          handle the value 1000.  Fixes bug reported by ziyunfei
          <446240525@qq.com>

shell.h,parse.y
        - save_parser_state,restore_parser_state: now save and restore
          redir_stack, short-circuiting if need_here_doc == 0.  If we save a
          non-zero value for need_here_doc, we have to make sure there is
          something valid for gather_here_documents to work on.  Fixes bug
          reported by Brian Carpenter <brian.carpenter@gmail.com>

                                   9/18
                                   ----
array.c
        - array_to_assign: use ansic_shouldquote to check whether each element
          value contains non-printable characters and use ansic_quote to
          generate the value instead of using sh_double_quote unconditionally

assoc.c
        - assoc_to_assign: if either the key or the value of an associative
          array element contains non-printable characters (ansic_shouldquote
          returns true), use ansic_quote to quote them instead of using double
          quotes unconditionally

                                   9/19
                                   ----
subst.c
        - pat_subst: handle REP being NULL.  Fixes bug reported by Brian
          Carpenter <brian.carpenter@gmail.com>

builtins/evalstring.c
        - parse_string: if we get a longjmp to top_level with DISCARD as the
          code (in which case we are going to go on), return -DISCARD to our
          caller (always xparse_dolparen) after doing our own cleanup instead
          of calling jump_to_top_level

parse.y
        - xparse_dolparen: if parse_string returns < 0, do the appropriate
          cleanup and then jump_to_top_level with the negative of the return
          value.  This allows us to do the appropriate parser cleanup in
          case we're not going to exit the shell.  Fixes bug reported by Brian
          Carpenter <brian.carpenter@gmail.com>

subst.c
        - extract_delimited_string: if a recursive call to one of the extract_
          functions or a call to ADVANCE_CHAR leaves i past the end of the
          string, cut the loop off at the end of the string.  Fixes bug
          reported by Brian Carpenter <brian.carpenter@gmail.com>

                                   9/20
                                   ----
subst.c
        - get_var_and_type: return appropriate values if variable indirection
          results in a NULL variable.  Fixes bug reported by Brian Carpenter
          <brian.carpenter@gmail.com>

lib/readline/history.c
        - history_get_time: handle strtol overflows caused by malicious
          modifications to timestamps in the history file.  Fixes issue
          reported by rens@endoria.net

                                   9/21
                                   ----
lib/readline/rlconf.h
        - ENABLE_AUDIT_TTY_SUPPORT: now undefined (off) by default

                                   9/24
                                   ----
jobs.c
        - waitchld: if we get a SIGINT while waiting for a child to exit, but
          the kernel doesn't interrupt the waitpid(2) call, assume the child
          caught SIGINT if it exited for some reason other than SIGINT.  Fix
          suggested by Stephane Chazelas <stephane.chazelas@gmail.com>

input.c
        - make_buffered_stream: use B_TEXT in buffered stream flags instead
          of (typo) O_TEXT.  Report and fix from Eric Blake <eblake@redhat.com>

                                   9/27
                                   ----
execute_cmd.c
        - shell_execve: call reset_parser before calling initialize_subshell,
          which calls delete_all_aliases.  reset_parser wants to free the
          pushed string list, which has pointers back into the alias table
          (use after free)
        - execute_simple_command: if we fork for an async command, make sure
          the child process increments shell_level before performing any
          word expansions, so $BASH_SUBSHELL is incremented.  Fixes issue
          reported by ziyunfei <446240525@qq.com>

                                   10/1
                                   ----
builtins/kill.def
        - kill_builtin: make -L equivalent to -l for compatibility with other
          (Linux) versions of kill

doc/{bash.1,bashref.texi}
        - kill: document new `-L' option

                                   10/2
                                   ----
[bash-4.4-beta frozen]

                                   10/5
                                   ----
doc/{bash.1,bashref.texi}
        - LC_TIME: document that the shell recognizes it and calls setlocale
          when it changes; and that the shell uses it for time formatting

                                   10/6
                                   ----
subst.c
        - skip_single_quoted: now takes an additional `flags' argument, like
          skip_double_quoted; changed callers
        - skip_single_quoted: now pays attention to SX_COMPLETE flag, allows
          backslash to escape single quote, like $'...' allows
        - skip_to_delim: added case where we are completing and we are
          skipping over a $'...' string to call skip_single_quoted with
          SX_COMPLETE flag to allow backslash to quote single quote.  Fixes
          bug reported by Daniel Colascione <dancol@dancol.org>
        - char_is_quoted: make analogous changes to handle $'...' so we can
          accommodate $'ab \' cd'

                                   10/11
                                   -----
subst.c,bashjmp.h
        - no_longjmp_on_fatal_error: now global so other parts of the shell can
          use it

arrayfunc.c
        - expand_array_index: if no_longjmp_on_fatal_error is non-zero, don't
          longjmp to top_level, just return 0.  Fixes bug reported by
          isabella parakiss <izaberina@gmail.com>

subst.c
        - CQ_RETURN: restore old value of no_longjmp_on_fatal_error (oldjmp);
          make sure all callers (skip_matched_pair, skip_to_delim,
          char_is_quoted) save no_longjmp_on_fatal_error to oldjmp before
          setting it to 1

expr.c
        - expr_streval: if longjmping after an unbound variable error, jump
          back to expr toplevel (evalbuf) if no_longjmp_on_fatal_error is set
          in an interactive shell

variables.c
        - push_func_var: if pushing an array variable, such as when a variable
          in the temporary environment is promoted to an array by mapfile when
          the shell is in posix mode (so variable assignments preceding special
          builtins or shell functions persist in the shell environment after
          the builtin returns), make sure to copy the array or hash table so
          the variable is duplicated correctly.  Fixes seg fault reported by
          Linda Walsh <bash@tlinx.org>

                                   10/13
                                   -----
variables.c
        - initialize_shell_variables: add call to sv_shcompat, so BASH_COMPAT
          can be set in the initial environment

execute_cmd.c
        - execute_function: set loop_level to 0 only if shell_compatibility_level
          is greater than bash-4.3; this was kind of an incompatible change.
          Report from Carlos Pita <carolosjosepita@gmail.com>

COMPAT,doc/{bash.1,bashref.texi}
        - compat43: added loop_level changes to description

                                   10/15
                                   -----
lib/sh/casemod.c,lib/readline/display.c
        - make sure mb_cur_max variable is defined outside of HANDLE_MULTIBYTE
          if it's used outside HANDLE_MULTIBYTE.  Fixes from Greg Wooledge
          <wooledg@eeg.ccf.org>

support/Makefile.in
        - bash.pc: remove as part of distclean, not clean.  Report from Andreas
          Schwab <schwab@linux-m68k.org>

                                   10/17
                                   -----
subst.c
        - array_var_assignment: make sure to call quote_string or quote_escapes
          on the assignment string, so spaces in the assignment survive word
          splitting.  Fixes bug reported by isabella parakiss
          <izaberina@gmail.com>

                                   10/20
                                   -----
doc/{bash.1,bashref.texi}
        - word splitting: make sure that newline is listed as one of the IFS
          whitespace characters.  Fixes omission reported by ziyunfei
          <446240525@qq.com>

lib/readline/histfile.c
        - history_do_write: make sure that we only create and use the tempfile
          if the history file exists and is a regular file.  Reported several
          times, most recent check the result of a report from
          <marko.teiste@gmail.com>

                                   10/22
                                   -----
jobs.c
        - delete_all_jobs: if running_only == 0, we are eventually going to
          clear the bgpids list, so don't bother to add pids to it in
          delete_job (call with DEL_NOBGPID flag if running_only == 0)

                                   10/24
                                   -----
jobs.[ch]
        - bgpids: new implementation from a patch from John Fremlin
          <john@fb.com>, uses an array for the list of the last CHILD_MAX
          terminated background pids, and a separate hash table to search it.
          The storage can be freed as a unit, and the size of the hash table
          (currently 4096) is independent of the size of the bgpids table

subst.c
        - inherit_errexit: new variable to control whether or not command
          substitution inherits the -e (errexit) option.  Disabled by default

general.c
        - posix_initialize: set inherit_errexit = 1 when Posix mode is enabled

builtins/shopt.def
        - inherit_errexit: new shell option, tracks value of inherit_errexit,
          allows command substitution to inherit the setting of errexit without
          posix mode.  From a request and patch submitted by Christoph Gysin
          <christoph.gysin@gmail.com>

{version,version2}.c
        - use #if HAVE_SNPRINTF instead of #if defined in case configure
          decides to #define it to 0.  Fixes problem reported by Klaus Ziegler
          <klausz@haus-gisela.de>

configure.ac
        - when checking for sys/resource.h, make sure to include <sys/time.h>
          for the benefit of both old systems that require it and new versions
          of autoconf that require a header file to compile to report its
          presence.  Reported by Klaus Ziegler <klausz@haus-gisela.de>

                                   10/26
                                   -----
subst.h
        - SD_ARITHEXP: new flag value for skip_to_delim, supports parsing
          arithmetic expressions in parameter expansions

subst.c
        - skip_to_delim: handle SD_ARITHEXP flag by skipping parentheses for
          subexpressions and allowing ?: expression to not terminate an
          arithmetic expression delimited by `:'
        - skiparith: just call skip_to_delim with the SD_ARITHEXP option and
          the right delimiter string and return the right result.  Fixes bug
          reported by <grishalevit@gmail.com>

include/shmbchar.h
        - strip out everything except what is needed to support is_basic and
          similar functions, since the mbchar_t typedef apparently conflicts
          with some AIX-specific type definition.  Problem reported by
          Michael Felt <aixtools@gmail.com>

                                   10/27
                                   -----
builtins/{set,ulimit}.def
        - {set,ulimit}_builtin: make sure that --help is treated the same as
          -? and prints a message and returns.  Fixes bug reported by ziyunfei
          <446240525@qq.com>

builtins/*.def
        - make sure to consistently use builtin_help() instead of mix of that
          function and builtin_usage()

                                   10/29
                                   -----
doc/{bash.1,bashref.texi}
        - BASH_CMDS, BASH_ALIASES: note that removing elements from these
          array variables is not currently reflected in the command hash
          table and alias list, respectively.  Reported by isabella parakiss
          <izaberina@gmail.com>

                                   10/30
                                   -----
eval.c
        - reader_loop: if PS0 is set in an interactive shell, expand and
          display it after reading a (complete) command but before executing
          it.  This differs from the DEBUG trap because the DEBUG trap is
          executed once for each simple command (and some others, like each
          time through a for loop).  From a patch submitted by Dan Stromberg
          <dstromberglists@gmail.com>

parse.y
        - prompt_again: set ps0_prompt from $PS0 in an interactive shell

doc/{bash.1,bashref.texi}
        - PS0: document new prompt string

                                   11/3
                                   ----
subst.c
        - cond_expand_node: if special > 0, remove quoted nulls from the word
          list, since no word splitting takes place.  Fixes bug reported by
          Corentin Peuvrel <cpeuvrel@pom-monitoring.com>

                                   11/4
                                   ----
doc/{bash.1,builtins.texi}
        - inherit_errexit: add to shopt description; modify Posix mode
          description

                                   11/9
                                   ----
lib/readline/util.c
        - rl_tilde_expand: fix out-of-bounds read caused when this function
          is invoked with rl_point == 0.  Bug reported by Hanno Böck
          <hanno@hboeck.de>

                                   11/11
                                   -----
{nojobs,jobs}.c
        - get_original_tty_job_signals: force the original signal disposition
          for SIGTSTP/SIGTTIN/SIGTTOU to SIG_DFL in interactive shells.  This
          will force child processes to get SIG_DFL even if the shell is
          started with those signals ignored.  From a bug report from
          Keith Thompson <keithsthompson@gmail.com>

                                   11/13
                                   -----
make_cmd.c
        - make_function_def: if a function is being defined without a source
          file, and the shell has not been initialized, assume that the
          function is being imported from the environment and set the
          source_file struct member to "environment".  Set to "main" if the
          shell has been initialized.  Fixes bug reported on savannah by
          Arno-Can Uestuensoez
          https://savannah.gnu.org/support/index.php?108903

subst.c
        - skip_to_delim: if the shell is in posix mode (posixly_correct != 0)
          and performing history expansion ((flags & SD_HISTEXP) != 0), allow
          double quotes to quote the history expansion character.  TENTATIVE
          CHANGE, inspired by
          https://savannah.gnu.org/support/index.php?108491

                                   11/14
                                   -----
jobs.c
        - wait_for: modify change from 4/23 to only give the terminal to
          shell_pgrp if not running in the background and subshell_environment
          indicates we're not in a pipeline and not an async command.  Fixes
          bug reported by konsolebox <konsolebox@gmail.com>

                                   11/16
                                   -----
doc/{bash.1,bashref.texi}
        - document new posix-mode behavior of not giving ! special meaning
          within double quotes, even if histexpand is enabled

                                   11/17
                                   -----
builtins/evalfile.c
        - fc_execute_file: pass FEVAL_BUILTIN flag to _evalfile so it returns
          the value of parse_and_execute after executing the commands in the
          file.  Fixes bug reported by Chris Marusich <cmmarusich@gmail.com>

                                   11/20
                                   -----
subst.c
        - process_substitute: don't unconditionally set pipeline_pgrp to
          shell_pgrp; do that only if pipeline_pgrp == 0 (we haven't forked
          yet) or if we know we haven't forked for a command, a pipeline,
          or an async command.  Fixes bug reported by
          <gnu.20.drkshadow@spamgourmet.com>
          as https://savannah.gnu.org/support/index.php?108593

                                   11/24
                                   -----
variables.c
        - set_pwd: inherit the value of OLDPWD from the initial environment
          if it names a directory.  From a report from John Wiersba
          <jrw32982@yahoo.com>

builtins/set.def
        - -T: fix help text to note that the DEBUG and RETURN traps are both
          inherited if this is set.  Report from Grisha Levin
          <grishalevit@gmail.com>

doc/{bash.1,bashref.texi}
        - HISTIGNORE,GLOBIGNORE: note that the pattern matching is subject to
          the setting of the `extglob' variable.  Clarification raised by
          Aharon Robbins <arnold@skeeve.com>

builtins/jobs.def,doc/{bash.1,bashref.texi}
        - disown: add text to synopsis making it clear that disown takes a
          pid argument.  From a report from Matthew Stanfield
          <matthew@i-dig.info>

findcmd.c,doc/{bash.1,bashref.texi}
        - EXECIGNORE: change pattern matching to use FNMATCH_EXTFLAG like other
          IGNORE variables.  From a report from Aharon Robbins <arnold@skeeve.com>

trap.c
        - _run_trap_internal: make sure to catch and use return values supplied
          as arguments to `return'; instead of just catching return, make sure
          we use return_catch_value as well.  Fixes bug reported by
          Grisha Levit <grishalevit@gmail.com>, affects RETURN, DEBUG, ERROR
          traps

                                   11/30
                                   -----
lib/readline/display.c
        - rl_redisplay: fix code that deals with prompts that contain
          multibyte characters whose physical length is longer than the screen
          width (so the prompt line wraps) to deal with invisible characters
          in the prompt and set the inv_lbreaks offsets correctly and set
          lpos appropriately
        - _rl_move_cursor_relative: always called with either visible line or
          invisible line. Decide whether we are being called with the invisible
          line (or a portion thereof) as the DATA argument; make sure to account
          for invisible characters in the last line of the prompt by offsetting
          the desired buffer offset (NEW) by where DATA starts in invisible line
          and checking whether that is past the last invisible character in
          the prompt
        - _rl_move_cursor_relative: do the same for the visible line by using
          the visible line lbreaks array instead of _rl_screenwidth, since
          that fails in the presence of multibyte characters (buffer offset
          vs. physical screen position).  These fix bug with prompts with
          multibyte characters and invisible characters that are longer than
          the screen width reported by Ryo Furue <ryofurue@gmail.com>

                                   12/1
                                   ----
parse.y,make_cmd.c
        - here_doc_first_line: new variable, set to non-zero to indicate the
          first line of possibly multiple here documents associated with the
          current command.  Set in parse.y:gather_here_documents() before
          reading any here documents, set to 0 after reading the first line
          of any here document in make_cmd.c:make_here_document().

parse.y
        - history_delimiting_chars: if parser_state indicates we are reading
          a here document, don't use current_command_line_count to see whether
          or not we're on the first line of a here document -- it can be fooled
          by multi-line commands (or even backslash-escaped newlines).  Use
          here_doc_first_line to check that directly.  Fixes bug reported by
          Geoffrey Allott <geoffrey@allott.email>

shell.h,parse.y
        - save and restore here_doc_first_line as part of the shell's parser
          state

lib/sh/tmpfile.c
        - use ANSI-C rand() interface if random() not available.  Fixes problem
          with linking on (ancient) Solaris 2.4 reported by Klaus Ziegler
          <klausz@haus-gisela.de>

                                   12/2
                                   ----
aclocal.m4
        - RL_LIB_READLINE_VERSION: if cross-compiling, assume current version
          of readline if cross-compiling bash while using an external readline
          library.  Fix from Barry Davis <barry_davis@stormagic.com>

execute_cmd.c
        - execute_builtin: save and restore value of builtin_ignoring_errexit
          instead of assuming we can set it back to 0 -- the ignore-errexit
          cases might be nested
        - execute_builtin: after a builtin executes and eval_unwind is set,
          set exit_immediately_on_error to 0 if builtin_ignoring_errexit is
          set, and back to the value of errexit otherwise, just like the
          code that sets -e does.  Fixes short-circuiting bug reported by
          Marcin Swigon <swigon.mar@gmail.com>

                                   12/5
                                   ----
builtins/setattr.def
        - set_or_show_attributes: instead of using a fixed string for the
          options argument to `declare', which results in export adding the
          readonly attribute, build the option string dynamically like in
          subst.c:shell_expand_word_list()
        - set_or_show_attributes: don't add the -r option to declare if the
          attribute passed as an argument doesn't include att_readonly; add
          -x if the attribute includes att_exported
        - set_or_show_attributes: add the -g option to declare so readonly
          and export in functions that go through this code path don't create
          local variables.  Part of fix for bug reported by ziyunfei
          <446240525@qq.com>

execute_cmd.c
        - make_internal_declare: if we have an assignment builtin that isn't
          supposed to create local variables (export/readonly), make sure to
          add the W_ASSNGLOBAL flag to each assignment statement word.
          Part of fix for bug reported by ziyunfei <446240525@qq.com> where
          readonly can create local variables when invoked with a compound
          array assignment as an argument within a shell function

subst.c
        - make_internal_declare: added third argument: command name.  Not used
          in any useful way yet
        - do_compound_assignment: handle attempted assignments to readonly
          variables and print error messages, like bind_variable does and the
          callers expect. This means that assignments to readonly array
          variables can't go through a code path that allows them to fail
          silently

doc/Makefile.in
        - uninstall: run install-info --delete after removing the installed
          info file to update the directory file

execute_cmd.c
        - execute_disk_command: since we still (and have always) perform
          redirections in child processes, we need to mark that state so
          we know that we're in a child process.  subshell_performing_redirections
          is the new variable; non-zero when executing do_redirections()

subst.c
        - process_substitute: if we are executing process substitution in a
          redirection expansion context (expanding_redir == 1), the child
          process should not have access to any temporary environment the
          parent has.  Call flush_tempenv() in the child process to get rid
          of it.  Fix for bug reported by Clint Hepner <clint.hepner@gmail.com>

                                   12/9
                                   ----
jobs.c
        - waitchld: if in posix mode and attempting to let SIGCHLD interrupt the
          wait builtin, make sure wait_intr_flag is non-zero before trying to
          longjmp to wait_intr_buf.  Fixes bug reported by Aharon Robbins
          <arnold@skeeve.com>

                                   12/10
                                   -----
lib/readline/display.c
        - update_line: if a prompt containing invisible characters changes,
          and the change is within the prompt string, we need to redraw the
          entire prompt.  After that redraw, if the cursor position is after
          the first index where the old and new lines differ, we can short-
          circuit the update if the line length stays the same
        - update_line: if we redraw the entire prompt string because the prompt
          contains invisible characters and the first difference is in the
          middle of the prompt, we possibly need to adjust our idea of the
          first differing character in the old and new lines.  We punt and do
          a dumb update in this case.  Fixes bug with dynamic vi-mode mode
          strings containing invisible characters reported by Dylan Cali
          <calid1984@gmail.com>

                                   12/11
                                   -----
lib/readline/display.c
        - update_line: if we move up to a new screen line, we need to recompute
          the number of invisible characters on the new current line
          (visible_wrap_offset).  Fixes bug reported to bug-readline by
          Per Bothner <per@bothner.com>
        - update_line: update code that attempts to compute where we are in
          the new line buffer.  Fixes `vt100' bug reported to bug-readline by
          Per Bothner <per@bothner.com>

                                   12/18
                                   -----
execute_cmd.c
        - execute_function: unwind-protect and restore BASH_ARGC and BASH_ARGV
        - restore_funcarray_state: now global

execute_cmd.h
        - make func_array_state type global, add extern function declaration
          for restore_funcarray_state

builtins/evalfile.c
        - _evalfile: use restore_funcarray_state and pop_args as unwind-protects
          to restore BASH_{SOURCE,LINENO,ARGC,ARGV} and FUNCNAME on interrupts.
          Fixes bug reported back on 11/10 by Grisha Levit
          <grishalevit@gmail.com>

                                   12/20
                                   -----
lib/readline/isearch.c
        - _rl_isearch_dispatch: after removing the only character from the
          search string with DEL, leaving the search string empty, don't match
          the previous line if we didn't have a match before

                                   12/22
                                   -----
bashhist.c
        - enable_history_list,remember_on_history: initialize to 0 instead of 1

shell.c
        - init_interactive,init_interactive_script: set enable_history_list and
          remember_on_history to 1 (defaults)

                                   12/23
                                   -----
variables.c
        - initialize_shell_variables: don't inherit PS4 from the environment
          if the shell is running with euid == 0; just reset it to `+ '.  This
          is a known potential vulnerability, since PS4 expansion performs
          command substitution in the root shell's context before displaying
          it.  Discussion started by up201407890@alunos.dcc.fc.up.pt

bashhist.c
        - bash_history_reinit: initialize remember_on_history to the value of
          enable_history_list (set -o history).  Fixes bug reported by
          Stephane Chazelas <stephane.chazelas@gmail.com> with command-line
          option `-o history' not having any effect

                                   12/28
                                   -----
lib/readline/{history.h,histfile.c}
        - history_file_version: new int variable, reserved for future use
        - history_multiline_entries: new int variable, can be set by the
          calling application to enable reading multi-line history entries
          from the history file (currently undocumented)

lib/readline/history.c
        - _hs_append_history_line: new function, append a line passed as an
          argument to a specified history entry, used to create multi-line
          history entries

lib/readline/histfile.c
        - read_history_range: implement a heuristic that temporarily sets the
          history comment character if the first line read from the history
          file looks like it has is a timestamp (#[:digit:]) so we can read
          timestamps from the history file properly.  Originally reported
          back in March 2015 by Christoph Anton Mitterer <calestyo@gmail.com>
        - read_history_range: make sure history_multiline_entries is non-zero
          if the history file looks like it has timestamps
        - read_history_range: if we think we have a history file with timestamps
          and we read more than one non-timestamp consecutive history lines,
          assume they are part of a single multi-line history entry and paste
          them together using _hs_append_history_line.  Feature most recently
          requested by james harvey <jamespharvey20@gmail.com>, also suggested
          by Christoph Anton Mitterer <calestyo@gmail.com>

examples/loadables/setpgid.c
        - setpgid: new loadable builtin, originally contributed by Jason
          Vas Dias <jason.vas.dias@gmail.com>

                                   12/29
                                   -----
bashhist.c
        - bash_history_inhibit_expansion: fix cases where a history expansion
          should be skipped because it's in a command or process substitution
          but there is another history expansion preceding the substitution
          on the command line.  Don't let the previous history expansion fool
          the function into saying the command substitution history expansion
          should be performed

builtins/evalstring.c
        - parse_prologue: always unwind-protect history_expansion_inhibited,
          since history expansion can be enabled in non-interactive shells,
          and calling eval once in a non-interactive shell inhibits history
          expansion forever even if `set -o histexpand' was run before the
          eval

builtins/common.h
        - SEVAL_NOHISTEXP: new flag for parse_and_execute/parse_string; means
          to not perform history expansion (decouple from SEVAL_NOHIST, which
          now means to not remember commands on history); changed all callers
          that had SEVAL_NOHIST to have SEVAL_NOHIST|SEVAL_NOHISTEXP

builtins/evalstring.c
        - parse_prologue: instead of calling bash_history_disable, set
          remember_on_history to 0 if SEVAL_NOHIST and history_expansion_inhibited
          to 1 if SEVAL_NOHISTEXP

                                   12/30
                                   -----
subst.c
        - skip_to_histexp: new function, a stripped-down version of skip_to_delim.
          Used to skip to the next unquoted instance of the history expansion
          character, handles peculiar quoting and command/process substitution
          requirements.  Better fix for bug reported by
          Zigmund.Ozean@zig-home.localdomain back in January, prompted by report
          from Keith Thompson <keithsthompson@gmail.com>

bashhist.c
        - bash_history_inhibit_expansion: use skip_to_histexp instead of
          skip_to_delim

subst.c
        - parameter_brace_expand_rhs: if the rhs of an expansion is "$@" and
          IFS is null, we need to separate the (quoted) positional parameters
          in the returned word with a space, and mark the word as needing to
          be split on spaces (W_SPLITSPACE).  Fix for issues reported back in
          October 2014 as the result of an austin-group discussion, and just
          re-reported by Martijn Dekker <martijn@inlv.org>

                                 1/4/2016
                                 --------
execute_cmd.c
        - execute_simple_command: if autocd is set, invoke a function named
          `cd' if one exists, instead of the shell builtin.  Feature requested
          by transl8czech@gmail.com

builtins/mkbuiltins.c
        - if a command's short description is the same as its name (e.g., `true'),
          don't mark the short doc to be translated.  Report and fix from
          Benno Schulenberg <bensberg@justemail.net>

                                    1/6
                                    ---
subst.c
        - command_substitute,process_substitute: before replacing the file
          descriptor underlying stdout (fd 1), make sure to purge any pending
          stdio output that hasn't been written successfully, even after a
          call to fflush().  Fixes bug reported by cks@cs.toronto.edu

                                    1/7
                                    ---
builtins/{echo,printf}.def
        - echo_builtin,printf_builtin: don't use terminate_immediately; use
          calls to QUIT in the body of the print loop after writes and flushes.
          Fixes problem with running the signal handler and exit trap in a
          signal context and other bug reported by cks@cs.toronto.edu

builtins/common.c
        - sh_chkwrite: put in calls to QUIT to catch signals that interrupt
          writes

shell.c
        - get_current_user_info: protect endpwent() with #ifdef HAVE_GETPWENT.
          Fixes bug reported by pb <p-bauer-schriesheim@t-online.de>

                                    1/8
                                    ---
lib/readline/bind.c
        - _rl_init_file_error: now a varargs function so it can take format
          strings and arguments and pass them to vfprintf
        - rl_parse_and_bind: print a warning if we encounter a key binding
          string with one or more hyphens but we don't find a valid modifier
          (`control', `meta', etc.).  Prompted by a report from Andrew Kurn
          <kurn@sfu.ca>
        - rl_parse_and_bind: improve several existing error messages now that
          _rl_init_file_error takes a variable number of arguments
        - rl_variable_bind: print error message upon encountering unknown
          variable

                                   1/10
                                   ----
lib/readline/bind.c
        - rl_parse_and_bind: if a `bare' keybinding is supplied without any
          terminating `:' or whitespace separating it from the command to be
          bound, signal an error

                                   1/11
                                   ----
subst.c
        - process_substitute: when compiled without job control (JOB_CONTROL not
          defined), make sure we call stop_making_children like we do in the job
          control code branch, so already_making_children is reset to 0.  This
          is what command substitution does.  Fixes bug reported by Alastair
          Hughes <hobbitalastair@yandex.com>

                                   1/12
                                   ----
execute_cmd.c
        - execute_in_subshell: if a user subshell (`(command)') or other shell
          compound command has an input pipe, note for later by setting
          stdin_redir.  This will inhibit the implicit redirection of standard
          input from /dev/null for async commands executed as part of this
          subshell.  Fixes bug reported by Martin D Kealey <martin@kurahaupo.gen.nz>
        - execute_simple_command: if the shell forks to execute this command
          because it has an input pipe, set stdin_redir to inhibit later redirection
          from /dev/null for async commands

                                   1/13
                                   ----
execute_cmd.c
        - HASH_BANG_BUFSIZE: use #define for size of buffer used in
          READ_SAMPLE_BUF instead of straight constant 80
        - HASH_BANG_BUFSIZ: increase to 128 because Linux allows 128 chars in
          exec header.  Reported by Ludovic Courtès <ludo@gnu.org>

configure.ac
        - remove support for purify and purecoverage
        - change release level to `rc1'

                                   1/15
                                   ----
builtins/enable.def
        - dyn_load_builtin: fix missing argument to builtin_error if load function
          returns an error.  Fix from Aharon Robbins <arnold@skeeve.com>

                                   1/18
                                   ----
builtins/history.def
        - histtime: display a better error message for invalid timestamps; use
          existing `??' string for empty/missing timestamps or invalid history
          entries.  Suggestion from Reuben Thomas <rrt@sc3d.org>

                                   1/21
                                   ----
lib/readline/text.c
        - rl_insert: when trying to optimize typeahead, make sure to reset the
          key sequence and key sequence length when we read a character that is
          not bound to self-insert.  Bug report from Geir Hauge
          <geir.hauge@gmail.com>

                                   1/25
                                   ----
doc/{bash.1,bashref.texi}
        - word splitting: add example showing how -d'' is equivalent to -d
          after word splitting and null argument removal

                                   1/27
                                   ----
doc/{bash.1,bashref.texi}
        - read: modify description to make it more clear that the line is split
          using the same rules as word splitting, and use `delimiters' instead
          of `separators', which people read the wrong way

                                    2/2
                                    ---
variables.c
        - initialize_shell_variables: allow FUNCNEST to set funcnest_max when
          imported from the environment.  Inspired by
          https://bugzilla.redhat.com/show_bug.cgi?id=1274553

                                   2/11
                                   ----
bashhist.c
        - bash_history_inhibit_expansion: function should be compiled in only if
          BANG_HISTORY is defined.  Report from isabella parakiss
          <izaberina@gmail.com>

[bash-4.4-rc1 frozen]

                                   2/15
                                   ----
lib/readline/text.c
        - rl_refresh_line: call rl_redraw_prompt_last_line instead of
          rl_forced_update_display to avoid redrawing all lines of a multiline
          prompt (overwriting the last line of the multiline prompt in the
          process).  Report from Hugh Davenport <hugh@davenport.net.nz>

                                   2/18
                                   ----
subst.c
        - parameter_brace_expand: when processing ${!name[@]}, make sure to
          free `name' before returning the list of keys to avoid a memory leak.
          Fixes bug reported by Emilio PastorMira <Emilio.PastorMira@utimaco.com>

                                   2/19
                                   ----
trap.c
        - free_trap_strings: when freeing the `special' traps (NSIG to BASH_NSIG),
          check whether or not the `signal' is trapped, as it would be if the
          subshell inherited it (errtrace) and don't free the trap string in that
          case.  Fixes bug reported by Jan Klötzke <jan@kloetzke.net>

                                   2/21
                                   ----
lib/sh/netconn.c
        - isnetconn: return false if getpeername fails with errno == EBADF.
          Bug and fix from Andrew Gregory <andrew.gregory.8@gmail.com>

builtins/shopt.def
        - parse_bashopts: when reading BASHOPTS from the environment, make
          sure to call any set functions associated with a variable, instead
          of just setting the value to 1.  Report and fix from
          Vehlow, Jörg <Joerg.Vehlow@kratzer-automation.com>

                                   2/22
                                   ----
lib/readline/complete.c
        - rl_display_match_list: don't bother calling strrchr to check the
          return value from printable_part() if rl_filename_completion_desired
          is non-zero, since in that case printable_part just returns its
          argument.  Fixes git completion issue reported by
          Dilyan Palauzov <dilyan.palauzov@aegee.org>
        - _rl_colored_completion_prefix: default is now 0, testing is complete

                                   2/23
                                   ----
variables.c
        - assign_hashcmd: if the shell is restricted, reject attempts to add
          pathnames containing slashes to the hash table, as the hash builtin
          does.  Fixes bug reported to savannah by Sylvain Beucler as
          https://savannah.gnu.org/support/?108969

                                   2/24
                                   ----
subst.c
        - NEED_FPURGE_DECL: need it before externs.h included, since fpurge
          is now used in this file.  Fixes warning reported by Mike
          Frysinger <vapier@gentoo.org>
        - skip_double_quoted: add missing argument to declaration

parse.y
        - shell_getc: in call to internal_warning, use %lu to print an argument
          cast explicitly to unsigned long.  Fixes warning reported by Mike
          Frysinger <vapier@gentoo.org>

                                   2/27
                                   ----
parse.y
        - decode_prompt_string: quote result of \s expansion in case shell has
          been invoked with a pathname like '$(id)'.  Inspired by report from
          Travis Garrell <travis.garrell@oracle.com>
        - decode_prompt_string: quote result of \h and \H expansions in the
          (unlikely) case that the hostname has been changed to something
          malicious including a command substitution.  From report from
          Travis Garrell <travis.garrell@oracle.com>

builtins/getopts.def
        - getopts_unbind_variable: new static function, just calls unbind_variable
          for now.  Placeholder for any future work to do something special if
          OPTARG is readonly.  Based on discussion started by Robert Elz
          <kre@munnari.oz.au>

lib/readline/vi_mode.c
        - rl_vi_unix_word_rubout: new function, implements ^W as Posix specifies
          it for vi mode, using whitespace and punctuation characters as word
          boundaries. Prompted by question from Carlos Pita
          <carolosjosepita@gmail.com>

lib/readline/vi_keymap.c
        - bind rl_vi_unix_word_rubout to ^W by default in both insert and
          command mode

lib/readline/rltty.c
        - _rl_bind_tty_special_chars: if in vi mode, bind the WERASE character
          to rl_vi_unix_word_rubout

lib/readline/funmap.c
        - vi-unix-word-rubout is new bindable name for rl_vi_unix_word_rubout

lib/readline/readline.h
        - rl_vi_unix_word_rubout: new extern declaration

                                   2/28
                                   ----
doc/bash.1
        - document readline blink-matching-paren variable
        - document readline completion-display-width variable
        - document readline completion-map-case variable
        - note that the default value of history-size depends on the value of
          the HISTSIZE variable.  All from a message from Branden Robinson
          <g.branden.robinson@gmail.com>

doc/bash.1,lib/readline/doc/{readline.3,rluser.texi}
        - convert-meta: modify the description to note that readline will turn
          the default to off if the locale contains eight-bit characters
        - input-meta: modify the description to note that readline will turn
          the default to on if the locale contains eight-bit characters
        - output-meta: modify the description to note that readline will turn
          the default to on if the locale contains eight-bit characters.  From
          a message from Branden Robinson <g.branden.robinson@gmail.com>

                                    3/6
                                    ---
examples/loadables/Makefile.in
        - install-dev: make installdirs a prerequisite; don't rely on the
          install-supported target to create it first.  Bug with parallel
          install (`make -j 4 install') reported by Chris Staub
          <cstaub67@gmail.com>

                                   3/12
                                   ----
lib/readline/display.c:
        - rl_clear_visible_line: clear all screen lines occupied by the current
          visible readline line.  Inspired by report from Lauri Ranta
          <lauri.ranta@gmail.com>

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

lib/readline/doc/rltech.texi
        - rl_clear_visible_line: add documentation

                                   3/19
                                   ----
findcmd.c
        - file_status: add inadvertently-dropped test for EXECIGNORE to the
          `other' bits check.  The check was in the original patch
        - search_for_command: if the file should not be considered executable
          because it's in the EXECIGNORE blacklist, don't set file_to_lose_on,
          since the attempt to execute the last-ditch path will circumvent the
          EXECIGNORE setting.  Fixes bug reported by Dennis Williamson
          <dennistwilliamson@gmail.com>

                                   3/28
                                   ----
lib/readline/display.c
        - rl_redisplay: when computing where the cursor should go (and the
          physical cursor position) after displaying the prompt, don't adjust
          the cursor position by wadjust if there are no multibyte chars in
          the prompt.  lpos is already a physical cursor position; _rl_screenwidth
          is the physical screen width, and we're not calling _rl_col_width and
          don't need to take invisible characters into account again.  Fixes
          bug reported by Andreas Schwab <schwab@linux-m68k.org>

                                    4/1
                                    ---
parse.y
        - parse_comsub: when we read `esac' followed by a break character,
          turn on the LEX_RESWDOK flag because we can now read another case
          statement or other compound command.  Fixes bug reported by
          Christian Franke <Christian.Franke@t-online.de>, original version
          of patch from Piotr Grzybowski <narsil.pl@gmail.com>
        - parse_comsub: leave the reserved-word-ok flag set for four-char
          reserved words (then/else/elif/done/time) that can be followed by
          reserved words; set lex_rwlen to 0 so we know to start reading a
          new one

                                    4/7
                                    ---
builtins/{alias,complete,jobs}.def
        - {alias,compopt,disown}: add missing `CASE_HELPOPT;' so --help option
          prints help longdoc instead of builtin_usage()

                                    4/8
                                    ---
arrayfunc.c
        - assign_array_var_from_word_list: use bind_array_var_internal instead
          of inline code, so value conversions happen on assignment (case
          modification, arithmetic evaluation, etc).  Fixes bug reported by
          Geir Hauge <geir.hauge@gmail.com>

                                    4/9
                                    ---
shell.c
        - main: change the logic that determines whether or not bash is running
          under an emacs terminal emulator so it works with future versions of
          emacs, which will change to use only $INSIDE_EMACS.  Report and fix
          from Paul Eggert <eggert@cs.ucla.edu>

lib/glob/sm_loop.c
        - EXT: if we see ?(pat), we can match 0 or 1 times, so if we don't
          match, we should consume the extglob pattern and go on to attempt
          to match the rest of the pattern against the string.  Fixes bug
          reported by Isabella Parakiss <izaberina@gmail.com>
        - GMATCH: in case `*', don't short-circuit and match anything if the
          * is the last character in the pattern until after we check the
          special cases for matching a `.'.  Fixes bugs reported back on 3/23
          by Isabella Parakiss <izaberina@gmail.com>

                                   4/13
                                   ----
bashhist.c
        - hc_erasedups: fix memory leak by freeing history entry returned by
          remove_history.  Bug and fix from Seiichi Ishitsuka
          <ishitsuka.sc@ncos.nec.co.jp>

                                   4/19
                                   ----
config-top.h
        - CD_COMPLAINS: now settable in config-top.h; enables (fatal) error
          messages if cd is given multiple directory arguments

                                   4/20
                                   ----
execute_cmd.c
        - coproc_setvars: refuse to create variables with names that are not
          valid identifiers.  Suggestion from Piotr Grzybowski
          <narsil.pl@gmail.com>

rltty.c
        - rl_tty_set_echoing: interface to set _rl_echoing_p, returning old
          value.  Inspired by gdb use of _rl_echoing_p when switching
          between terminal and curses modes described by Doug Evans
          <dje@google.com>

bashline.c
        - bash_execute_unix_command: use rl_clear_visible_line instead of
          erasing current line on the screen, inspired by same report from
          3/12.  Still tentative change

configure.ac
        - update release status to rc2, may skip this and go directly to
          release

                                   4/21
                                   ----
arrayfunc.c
        - convert_var_to_array: make sure that the newly-converted array
          variable is not marked as being an associative array.  Fixes bug
          reported by Grisha Levit <grishalevit@gmail.com>
        - convert_var_to_assoc: make sure that the newly-converted associative
          array variable is not marked as being an indexed array

                                   4/22
                                   ----
builtins/evalstring.c
        - should_suppress_fork: don't suppress the fork if there are any traps
          set, since that requires that we hang around to react to a signal or
          collect the command's exit status and run something.  Fixes bug
          reported by Brian Vandenberg <phantall@gmail.com>

histexpand.c
        - history_tokenize_word: handle >| as a single token.  Fix from
          Piotr Grzybowski <narsil.pl@gmail.com> from a report from
          idallen@idallen-fibe.dyndns.org

                                   4/24
                                   ----
execute_cmd.
        - coproc_setvars: don't overwrite readonly variables used as coproc
          names.  From a report from Grisha Levit <grishalevit@gmail.com>

histexpand.c
        - history_tokenize_word: handle strings of digits before redirections
          beginning with `<' or `>' as part of the redirection word; handle
          strings of digits following `<&' or `>&' as part of the redirection
          word.  Inspired by patch from  Piotr Grzybowski <narsil.pl@gmail.com>
          from a report from idallen@idallen-fibe.dyndns.org

lib/readline/complete.c
        - rl_display_match_list: if the common prefix is longer than any of
          the possible matches, set the length of the common prefix to 0 so
          the entire match gets printed for each match
        - rl_display_match_list: make sure to output at least one space
          between each displayed match, even if the displayed length is
          longer than our computed max
        - fnprint: if the length of the prefix (prefix_bytes) is greater than
          or equal to the length of the string to be printed (print_len), make
          sure to set the prefix length to 0 so the entire string is printed.
          From a report from Grisha Levit <grishalevit@gmail.com>

                                   4/25
                                   ----
subst.c
        - command_substitute: update the conditions under which we give the
          terminal to pipeline_pgrp with give_terminal_to to the same ones
          where wait_for uses to decide whether to give the terminal back to
          shell_pgrp.  This code exists to undo the work wait_for does; it
          has to give the terminal back to pipeline_pgrp only under those
          conditions when wait_for gives it back to the shell pgrp.  Fix for
          bug reported by Paulo Bardes <bardes0022@gmail.com>

                                   4/26
                                   ----
bashline.c
        - bash_filename_stat_hook: temporarily disable the `nounset' shell
          option around calls to expand_prompt_string so we don't get error
          messages during completion.  Fixes issue reported by Eric Pruitt
          <eric.pruitt@gmail.com>

                                   4/27
                                   ----
doc/{bash.1,bashref.texi}
        - extdebug: clarify that having this option enabled at shell startup
          acts identically to --debugger.  From a report from Grisha Levit
          <grishalevit@gmail.com>

jobs.[ch]
        - wait_for_single_pid: now takes additional `int flags' argument

{jobs,execute_cmd}.c,builtins/wait.def
        - wait_for_single_pid: changed callers to add extra argument

jobs.c
        - wait_for_single_pid: if (flags & 1) == 0, don't print the error
          message if PID isn't found; changed execute_pipeline call when
          lastpipe is set

                                   4/28
                                   ----
general.c
        - bash_tilde_expand: try not setting interrupt_immediately or
          terminate_immediately; see what happens with networked password
          databases

                                   4/29
                                   ----
subst.c
        - parameter_brace_expand, parameter_brace_expand_rhs: now take an
          additional `pflags' argument from its caller so we can pass
          state
        - parameter_brace_expand_rhs: if expand_string_for_rhs returns a
          quoted null, but l_hasdollat is set to 1, meaning we saw a quoted
          "$@" of some form, we need to turn off special handling of "$@"
          so something like "${@-${@-$@}}" expands to an empty string like
          Posix says it should.  Fixes bug reported by Grisha Levit
          <grishalevit@gmail.com>

                                    5/1
                                    ---
variables.c
        - bind_variable_internal: if we have a nameref variable with a valid
          array reference that is invalid for assignment (e.g., a[*]), and
          assign_array_element returns NULL, short-circuit and return NULL.
          Fixes bug reported by Grisha Levit <grishalevit@gmail.com>

general.[ch]
        - valid_nameref_value: new function, return 1 if passed argument is
          a valid variable name argument for a nameref variable: a valid
          identifier, a valid array reference, or a valid positional
          parameter.  Second argument indicates whether the value is to be
          used for an assignment; in this case, return an error if the name
          consists of all digits

builtins/declare.def
        - declare_internal: disallow values for nameref variables that don't
          pass the tests in valid_nameref_value.  Part of fix for bug
          reported by Grisha Levit <grishalevit@gmail.com>

variables.c
        - bind_variable_internal: if trying to assign a value to a nameref
          variable, throw an error if valid_nameref_value fails (with a second
          argument of 1).  More fixes for bug reported by Grisha Levit
          <grishalevit@gmail.com>

                                    5/2
                                    ---
builtins/declare.def
        - declare_internal: don't allow nameref attribute to be applied to an
          existing readonly variable; it can be used to circumvent readonly
          value.  Fix for bug reported by Grisha Levit <grishalevit@gmail.com>

variables.[ch]
        - find_variable_last_nameref, find_global_variable_last_nameref: takes
          a new flags argument.  If flags is non-zero, and we find a nameref
          variable that is unset (has no value), return that variable instead
          of NULL.

{variables,execute_cmd,arrayfunc,subst}.c,builtins/{declare,set}.def
        - find_variable_last_nameref, find_global_variable_last_nameref: change
          callers to add flags argument (initially 0)

                                    5/3
                                    ---
variables.c
        - bind_variable_internal: make sure we run the value of a namref
          variable through valid_nameref_value before doing the assignment.
          This can go away if we stop allowing namerefs to refer to positional
          parameters

execute_cmd.c
        - execute_select_command: if bind_variable returns NULL, handle it as
          an error, as if attempting assignment to a readonly variable
        - execute_for_command: use 1 as second argument to
          find_variable_last_nameref, so it will return an invisible nameref
          to assign for each variable in the list
        - execute_for_command: if the current word in the list is an invalid
          identifier and the loop variable is a nameref, handle it as an error,
          as if attempting assignment to a readonly variable

                                    5/4
                                    ---
variables.c
        - bind_int_variable: add warning if assigning an int to a nameref
          variable
        - assign_in_env: if assigning a variable in the temporary environment
          that is a namref, throw an error if trying to assign an invalid
          value
        - bind_variable_value: use valid_nameref_value instead of calls to
          legal_identifier and valid_array_reference

execute_cmd.c
        - coproc_setvars: if we have a nameref variable as the coproc name, but
          it can't be assigned to for some reason, remove the nameref attribute
          and  issue a warning that we are doing so
        - coproc_setvars: don't allow assignment to a nameref variable with an
          invalid variable name, using same code as find_or_make_array_variable

general.c
        - valid_nameref_value: disallow values consisting solely of digits,
          like the positional parameters

builtins/declare.def
        - declare_internal: don't call valid_nameref_value on the existing value
          of a variable that's being converted to a nameref -- that value is
          going to be thrown away and we've already checked the new value
        - declare_internal: call bind_variable_value with the ASS_NAMEREF flag
          if we're assigning to an existing nameref variable (for instance,
          `declare -n x ; declare x=42')

                                    5/5
                                    ---
variables.c
        - make_local_variable: if we are being asked to create a local copy of
          a nameref variable from a prior scope (checked by looking up
          using find_variable_noref), use the nameref variable, not the variable
          it references (which we find using find_variable).  Bug report from
          Grisha Levit <grishalevit@gmail.com> ; fix by Piotr Grzybowski
          <narsil.pl@gmail.com>

builtins/declare.def
        - declare_internal: if asked to do the same thing as above (difference
          is declare -n r=foo in previous case; declare -n r in this one),
          don't follow reference var from a previous context.  Create a new
          local variable (using make_local_variable) and inherit attributes
          from previous scope's nameref as above

                                    5/6
                                    ---
builtins/declare.def
        - declare_internal: if we are assigning a value to an existing
          invisible nameref variable, validate value early so we don't end up
          removing the variable after the assignment fails

builtins/shopt.def
        - toggle_shopts: don't call set_bashopts here unless $BASHOPTS exists,
          since we don't want to set it up before it gets read from the
          environment. Keeping BASHOPTS read-only should keep users from
          unsetting it.  Fix from Grisha Levit <grishalevit@gmail.com>
        - shopt_set_debug_mode: make sure error_trace_mode reflects the setting
          of extdebug.  This one is tentative.  Fix from Grisha Levit
          <grishalevit@gmail.com>
        - shopt_set_debug_mode: call set_shellopts after setting error_trace_mode
          or function_trace_mode.  Fix from Grisha Levit <grishalevit@gmail.com>

shell.c
        - start_debugger: make sure that function_trace_mode and error_trace_mode
          reflect the value of debugging_mode, so they are both disabled if we
          disable debugging mode because we can't find the debugger start file.
          Fix from Grisha Levit <grishalevit@gmail.com>
        - start_debugger: set $SHELLOPTS and $BASHOPTS to the option values are
          reflected if we change or set them here.  Fix from Grisha Levit
          <grishalevit@gmail.com>

builtins/set.def
        - reset_shell_options: add reset values for: posix, nolog, pipefail.
          Fix from Grisha Levit <grishalevit@gmail.com>

builtins/shopt.def
        - reset_shopt_options: add reset values for: autocd, checkjobs,
          complete_fullquote, dirspell, failglob, globstar, gnu_errfmt,
          huponexit, inherit_errexit, interactive_comments, lastpipe,
          no_empty_cmd_completion, progcomp.  Fix from Grisha Levit
          <grishalevit@gmail.com>
        - reset_shopt_options: make sure the following options have the right
          defaults based on #defines: checkjobs, checkwinsize, direxpand,
          extglob, globasciiranges.  Fix from Grisha Levit
          <grishalevit@gmail.com>

flags.c
        - reset_shell_flags: add missing flags, re-initialize history_expansion
          based on STRICT_POSIX

                                    5/8
                                    ---
lib/readline/histexpand.c
        - history_expand: if any expansion returns 1 from history_expand_internal,
          indicating that :p was supplied, make it apply to the entire line
          like tcsh and csh.  Fixes bug reported by Dean Stanton
          <dstanton@tintri.com>

variables.[ch]
        - ifsname: move define to variables.h

execute_cmd.c
        - execute_for_command: check whether or not the word in the for command
          is IFS; call setifs every time the variable is assigned a value.
          Fixes bug report from Grisha Levit <grishalevit@gmail.com>

                                   5/16
                                   ----
general.c
        - valid_nameref_value: explicitly handle name == 0 and *name == 0 right
          away to save calls to legal_identifier

builtins/declare.def
        - declare_internal: if trying to set nameref attribute on a variable
          with a null value, flag as invalid assignment, just as if running
          `declare -n r=""'.  Fixes bug report from Grisha Levit
          <grishalevit@gmail.com>
        - declare_internal: when creating a variable with a temporary value
          (""), use ASS_FORCE in the assignment flags to bypass name validity
          checks on nameref variable names

variables.c
        - bind_variable_internal: don't call valid_nameref_value if we're
          forcing assignment with (flags & ASS_FORCE)

builtins/read.def
        - read_builtin: handle bind_variable returning NULL when setting REPLY.
          Report and fix from Grisha Levit <grishalevit@gmail.com>

builtins/setattr.def
        - set_var_attribute: handle bind_variable returning NULL

lib/sh/tmpfile.c
        - sh_seedrand(): call srandom() to seed the random number generator
        - sh_mktmpname, sh_mktmpfd: if we have random(), assume we have
          srandom() and seed the random number generator. Still looking for
          better value to see random number generator with

variables.c
        - check_unbind_variable: use internal_error instead of builtin_error

{execute_cmd,variables}.c
        - fix some places where bind_variable could return NULL and it was not
          checked.  Fix from Piotr Grzybowski <narsil.pl@gmail.com>

                                   5/17
                                   ----
arrayfunc.c
        - convert_var_to_{array,assoc}: make sure to turn off nameref attribute,
          since namerefs can't be arrays

execute_cmd.c
        - coproc_setvars: if the coproc name names a nameref, resolve the
          nameref and use it as the name of the coproc.  Suggested by Grisha
          Levit <grishalevit@gmail.com>

subst.c
        - command_substitute: don't bother calling QUIT after calling
          reset_signal_handlers in the child, kill the child with SIGINT in
          case we just reset the signal handler to SIG_DFL and we should just
          exit instead of throwing to top level.  Fixes bug reported by
          Grisha Levit <grishalevit@gmail.com>

                                   5/18
                                   ----
variables.c
        - find_variable_nameref_for_create: find a nameref variable whose value
          doesn't resolve to an existing variable and see whether or not that
          value is appropriate for a new variable to be created
        - find_variable_nameref_for_assignment: find a nameref variable whose
          value doesn't resolve to an existing variable and see whether or not
          that value is appropriate for a new variable to be created.
          Difference between _assignment and _create is that _assignment
          allows the nameref value to be a subscripted array reference

builtins/setattr.def
        - set_var_attribute: if variable lookup doesn't return anything, check
          for a nameref and make sure that any reference value is something we
          should be working on here, using find_variable_nameref_for_create().
          If it fails, error out and return, otherwise it's probably a reference
          to a variable that hasn't been set yet, so let bind_variable take care
          of that.  Report from Grisha Levit <grishalevit@gmail.com>

arrayfunc.c
        - bind_array_variable: if find_shell_variable returns NULL, check for a
          nameref using find_variable_nameref_for_create and create a new array
          variable with the value if it returns a valid nameref variable.
          Makes `unset var; declare -n ref=var ; ref[0]=foo' work right.
          Report from Grisha Levit <grishalevit@gmail.com>

                                   5/19
                                   ----
variables.[ch]
        - unbind_variable_noref: unset a variable NAME without following any
          nameref chain.  If the first instance of the variable with that name
          is a nameref, just unset that nameref variable.

builtins/getopts.def
        - getopts_unbind_variable: if OPTARG is going to be unbound, use
          unbind_variable_noref to unbind that name even if it is a nameref
          variable.  Issue raised by Grisha Levit <grishalevit@gmail.com>

execute_cmd.c
        - coproc_unsetvars: use unbind_variable_noref in case someone sets the
          coproc _PID variable as a nameref pointing to something read-only or
          strange.  Issue raised by Grisha Levit <grishalevit@gmail.com>

builtins/set.def
        - set_ignoreeof: use unbind_variable_noref to unset "IGNOREEOF" and
          "ignoreeof"
        - set_posix_mode: use unbind_variable_noref to unset "POSIXLY_CORRECT"

variables.c
        - make_vers_array: use unbind_variable_noref to unset "BASH_VERSINFO"

lib/sh/shmatch.c
        - sh_regmatch: use unbind_variable_noref to unset "BASH_REMATCH"

bashline.c
        - bash_execute_unix_command: use check_unbind_variable to unset
          READLINE_LINE and READLINE_POINT

pcomplete.c
        - unbind_compfunc_variables: use unbind_variable_noref to unset
          COMP_LINE, COMP_POINT, COMP_WORDS, COMP_CWORD, COMP_TYPE, COMP_KEY
        - gen_shell_function_matches: use unbind_variable_noref to unset
          COMPREPLY

config-top.h
        - USE_MKTEMP/USE_MKSTEMP: define by default to use libc version of
          mktemp and mkstemp in lib/sh/tmpfile.c.  Recommended by Mike
          Frysinger <vapier@gentoo.org> to fix a FreeBSD problem

configure.ac,config.h.in
        - mkstemp: check for mkstemp, define HAVE_MKSTEMP if available

config-bot.h
        - USE_MKSTEMP: #undef if HAVE_MKSTEMP not defined

                                   5/22
                                   ----
variables.c
        - assign_in_env: if appending to a variable's value, make sure we call
          make_variable_value with the empty string if expand_assignment_string_to_string
          returns NULL, as do_assignment_internal does.  Fixes bug with
          `str=''; val=foo ; val+=str printenv val' reported by Grisha Levit
          <grishalevit@gmail.com>
        - assign_in_env: if assigning to a nameref variable in the temporary
          environment, and the nameref has a valid value for assignment (even
          if the target variable is not set), resolve the nameref and create
          a variable in the temporary environment named by the nameref's value.
          If the nameref variable is invisible or isn't set to a valid value
          for assignment, just create a regular temporary variable with the
          nameref's name.  This provides a degree of ksh93 compatibility.
          Suggested by Grisha Levit <grishalevit@gmail.com>
        - find_variable_nameref_context,find_variable_last_nameref_context:
          instead of returning NULL when detecting a loop, return a
          distinguished value: &nameref_maxloop_value
        - bind_variable: catch nameref_maxloop_value so we can do different
          things based on whether or not we get it.  Right now we don't do
          anything different, but we could

                                   5/24
                                   ----
lib/readline/display.c
        - update_line,_rl_move_cursor_relative: save value of MB_CUR_MAX in a
          variable and use it throughout the functions instead of recomputing it
          every time (which possibly costs a function call)

                                   5/25
                                   ----
builtins/declare.def
        - declare_internal: only check whether the value being assigned to a
          nameref variable is a valid identifier if we're not appending to an
          existing value.  Suggested by Grisha Levit <grishalevit@gmail.com>
        - declare_internal: add a couple of more checks on nameref names:
                o make sure `declare -n x[3]=y' is an error
                o nameref variable self-references now produce a warning when
                  in function scope
                o nameref variable self-references using subscripted arrays
                  (a=a[0]) now produce warnings at function scope and errors at
                  global scope

                                   5/29
                                   ----
builtins/declare.def
        - declare_internal: use name of readonly variable when calling sh_readonly      
          instead of name passed as argument to declare in case we've followed
          a nameref chain
        - declare_internal: when turning off attributes on a nameref variable
          after following the nameref chain and turning them off on the target
          variable, don't allow the readonly attribute to be removed.  This is
          primarily intended to turn off the nameref attribute.  Issue pointed
          out by Grisha Levit <grishalevit@gmail.com>
        - declare_internal: if we are attempting to modify an existing global
          nameref variable, and the -n option is supplied, operate on the
          nameref variable itself, not the variable it references

doc/{bash.1,bashref.texi}
        - change the descriptions of namerefs and declare -n slightly to note
          that using the -n option to declare will operate on the nameref
          variable itself rather than the variable it references

variables.c
        - bind_variable_internal: if trying to assign to a read-only variable,
          print the error message using the variable's name instead of the
          name passed to bind_variable in case we followed a nameref

builtins/declare.def
        - declare_internal: when we're creating a (possibly invisible) variable
          as part of another operation, assigning NULL, make sure to use
          ASS_FORCE to avoid warning messages from any existing nameref
          variables we follow
        - declare_internal: allow the nameref attribute to be removed from a
          readonly nameref variable without a value but do not allow it to be
          removed from a readonly nameref variable that has a value, even if it
          doesn't reference an existing variable.  This distinction is for ksh93
          compatibility.  Pointed out by Grisha Levit <grishalevit@gmail.com>

                                   5/31
                                   ----
builtins/declare.def
        - declare_internal: if the call to bind_variable_value fails for some
          reason, make sure to restore the nameref attribute to flags_on and
          flags_off before calling NEXT_VARIABLE

subst.c
        - make_internal_declare: handle += append op
        - shell_expand_word_list: when transforming assignment statement
          arguments to `declare', make sure to handle += append op to avoid
          passing invalid identifiers to declare.  Report by Grisha Levit
          <grishalevit@gmail.com>

                                    6/1
                                    ---
builtins/declare.def
        - declare_internal: if a nameref assignment fails, only call delete_var
          to delete the variable if we created it in declare_internal in the
          first place

general.c
        - check_selfref: new function, checks a NAME against a VALUE for nameref
          self-reference

general.h
        - check_selfref: extern declaration

builtins/declare.def
        - declare_internal: call check_selfref to determine whether a given NAME
          and VALUE constitute an invalid nameref variable self-reference

variables.c
        - bind_variable_internal: call check_selfref to determine whether a
          given NAME and VALUE constitute an invalid nameref variable self-
          reference

                                    6/2
                                    ---
parse.y
        - clear_shell_input_line: new function, clears contents of shell_input_line
          and sets index to 0, but doesn't free it

externs.h
        - clear_shell_input_line: extern declaration

builtins/evalstring.c
        - parse_and_execute: call clear_shell_input_line after setting input to
          string to be executed.  Fixes problem with command substitution and
          multi-line aliases reported by Grisha Levit <grishalevit@gmail.com>

eval.c
        - parse_command: only execute PROMPT_COMMAND if the shell is not
          currently expanding an alias; use the same tests as parse.y:SHOULD_PROMPT
          and parse.y:prompt_again() use to decide whether or not to print a
          prompt.  Fixes problems with PROMPT_COMMAND and multi-line aliases
          reported by Grisha Levit <grishalevit@gmail.com>

builtins/set.def
        - unset_builtin: changes to fix three problems reported by Grisha
          Levit <grishalevit@gmail.com>:
                o if -n is supplied, we should not try to unset a function if
                  a variable isn't found
                o unsetting namerefs whose values are array references does
                  not work
                o unset -n n[0], where n is a nameref, would unset the
                  referenced variable instead of `n'

redir.c
        - redir_varvalue: handle case where nameref var points to subscripted
          array reference.  Reported by Grisha Levit <grishalevit@gmail.com>

variables.c
        - bind_variable_value: make sure to call check_selfref only if aflags
          includes ASS_NAMEREF and not ASS_FORCE.  Reported by Grisha Levit
          <grishalevit@gmail.com>

general.c
        - valid_nameref_value: now understands a FLAGS value of 2 to mean that
          the name will be used to create a variable, so only legal_identifier
          matters

arrayfunc.c
        - find_or_make_array_variable: call valid_nameref_value with FLAGS value
          of 2 to indicate we will be creating a variable.  Fixes mapfile issue
          reported by Grisha Levit <grishalevit@gmail.com>

                                    6/5
                                    ---
builtins/declare.def
        - declare_internal: only pass ASS_FORCE as part of assignment flags to
          assignments concerning arrays
        - declare_internal: when at the global scope, if we resolve a nameref
          and commit to using the new name, go back to to the beginning of the
          loop and use the new name in the checks and variable references.
          Make sure we construct the new name as a straight substitution of
          the nameref value into the old name, including array subscripts and
          rebuilding the correct values for `offset' and `value', since they
          are relative to the original value of name.
          Fixes several issues with checking use of subscripted array variables
          as nameref values
        - declare_internal: when calling assign_array_element, make sure to
          pass ASS_APPEND if aflags includes it, so things like
                declare -a var; var[1]=1; declare var[1]+=4
          append to the value appropriately and var[1] ends up being `14'

arrayfunc.c
        - valid_array_reference: make sure the array reference is properly
          terminated after the first subscript; return invalid if there is
          anything following the closing `]'

                                   6/12
                                   ----
variables.c
        - bind_variable_internal: if asked to perform an array subscript
          assignment on a nameref variable, display a warning and remove the
          nameref attribute (as bash-4.3 did).  Reported by Dan Douglas
          <ormaaj@gmail.com>

                                   6/14
                                   ----
test.c
        - posixtest: handle four-argument case where argv[1] == '(' and
          argv[4] == ')' by performing two-argument test on $2 and $3.
          Reported by Joerg Schilling <Joerg.Schilling@fokus.fraunhofer.de>

                                   6/15
                                   ----
variables.c
        - sv_ignoreeof: make sure ignoreeof is set only if IGNOREEOF is set and
          has a value (no `local IGNOREEOF'). Reported by Grisha Levit
          <grishalevit@gmail.com>
        - sv_strict_posix: make sure posixly_correct is set only if
          POSIXLY_CORRECT is set and has a value.  Reported by Grisha Levit
          <grishalevit@gmail.com>

                                   6/16
                                   ----
builtins/declare.def
        - declare_internal: analogous to 6/12 change; when performing an array
          subscript assignment on a nameref, display a warning, remove the
          nameref attribute, and go on

                                   6/21
                                   ----
execute_cmd.c
        - shell_execve: make sure errno is (re)set appropriately before
          returning error value on exec format error

                                   6/23
                                   ----
subst.c
        - param_expand: when expanding $* in a context where splitting is not
          desired (pflags & PF_ASSIGNRHS), make sure to quote the word and the
          included separators.  Reported by Dan Douglas <ormaaj@gmail.com>

                                   6/30
                                   ----
configure.ac
        - release version is now `beta2'

execute_cmd.c
        - execute_simple_command: even if already_making_children is non-zero,
          don't call wait_for if last_made_pid == NO_PID.  Indirectly inspired
          by report from Nicolas Vivet <nicolas@nzx.io>

                                    7/2
                                    ---
subst.c
        - expand_word_internal: when adding an IFS character to the accumulated
          string, don't quote it if word expansion is not going to be
          performed ((word->flags & (W_NOSPLIT|W_NOSPLIT2)) == 0) in the
          default case.  This was already the case everwhere else, when we did
          `goto add_ifs_character;'.  Fixes bug reported by Ibrahim M. Ghazal
          <imgx64@gmail.com>

subst.[ch],arrayfunc.c
        - string_list_dollar_at: now takes a new third argument, currently
          reserved for future use; changed callers and declaration

                                    7/7
                                    ---
[bash-4.4-beta2 frozen]

                                    7/9
                                    ---
bashline.c
        - check_redir: make sure that index is > 0 before checking previous
          char; fixes out of bounds read reported by Hanno Böck
          <hanno@hboeck.de>

                                   7/16
                                   ----
subst.c
        - parameter_brace_expand: if ${array[@]} or ${array[*]} is supplied
          with an unset (or empty) array, and -u is enabled, don't make it
          an unbound variable error, like $@ or $* when there are no
          positional parameters.  Based on report from Ian Allen
          <idallen@idallen-fibe.dyndns.org>

lib/readline/signals.c
        - rl_pending_signal(): return the number of any signal readline has
          caught but is waiting to handle

lib/readline/callback.c
        - rl_persistent_signal_handlers: new variable, restores readline-6.2
          signal handler semantics: installed at rl_callback_handler_install
          time and removed with rl_clear_signals when a complete line has
          been read
        - _rl_callback_newline: call rl_set_signals if rl_persistent_signal_handlers
          is non-zero
        - rl_callback_read_char: install signal handlers with rl_set_signals
          if rl_persistent_signal_handlers is 0 (the default)
        - CALLBACK_READ_RETURN: uninstall signal handlers with rl_clear_signals
          only if rl_persistent_signal_handlers is 0 (the default)

lib/readline/readline.h
        - rl_pending_signal: new extern declaration
        - rl_persistent_signal_handlers: new extern declaration

                                   7/19
                                   ----
execute_cmd.c
        - execute_while_or_until: make sure we decrement `continuing' the way
          we decrement `breaking' if the loop test indicates we will be
          breaking out of the loop.  That keeps `until continue' from
          keeping `continuing' set to 1.  Reported by Dan Douglas
          <ormaaj@gmail.com>

                                   7/20
                                   ----
trap.c
        - run_pending_traps,_run_trap_internal: save and restore temporary_env,
          set temporary_env to 0 before trap runs so traps don't inherit a
          command's temporary env.  Fixes bug with IFS assignment in tempenv
          and trap reported by Andriy Martynets <martynets@volia.ua>

jobs.c
        - run_sigchld_trap: save and restore temporary_env, set temporary_env
          to 0 before trap runs so traps don't inherit a command's temporary
          env (see above)

                                   7/21
                                   ----
execute_cmd.c
        - execute_function: unwind-protect function_line_number, in case we
          are executing a function inside another function.  Reported by
          Grisha Levit <grishalevit@gmail.com> in context of evaled functions
          and DEBUG traps
        - execute_arith_for_command,execute_arith_command,execute_simple_command,
          execute_cond_command: make sure line_number doesn't go < 0 when
          adjusting it by function_line_number

                                   7/23
                                   ----
subst.c,command.h
        - move the PF_ constants to command.h so other files can see them, now
          that PF_ASSIGNRHS has meaning to string_list_dollar_at

arrayfunc.h
        - AV_ASSIGNRHS: new flag, indicate that ${a[@]} is being expanded on
          the RHS of an assignment statement

arrayfunc.c
        - array_value_internal: if AV_ASSIGNRHS passed for ${a[@]}, pass
          PF_ASSIGNRHS to string_list_dollar_at to support args separated by
          spaces even if $IFS does not have the default value.  Reported by
          Dan Douglas <ormaaj@gmail.com>

subst.c
        - string_list_dollar_at: if FLAGS argument includes PF_ASSIGNRHS, obey
          rules for $@ on the RHS of an assignment statement: expand to
          postitional parameters separated by spaces no matter what the first
          character of $IFS is.  Reported by Dan Douglas <ormaaj@gmail.com>
        - parameter_brace_expand_word: pass AV_ASSIGNRHS as flags value to
          array_value if PF_ASSIGNRHS is set and we are expanding an array
          variable subscripted by @ or *
        - param_expand: pass pflags to string_list_dollar_at in case it contains
          PF_ASSIGNRHS
        - expand_word_internal: if we have an assignment statement argument to
          a declaration builtin (W_ASSIGNARG), turn on W_ASSIGNRHS when we see
          the `=' to enable special $@ behavior
        - expand_word_internal: if W_ASSIGNARG enabled in word flags, pass that
          flag and W_ASSIGNRHS to recursive call to expand_word_internal when
          expanding double-quoted string; handles "$@" when IFS is not the
          default value and word splitting will not be performed

subst.c
        - expand_word_internal: change case that handles '' (single-quoted
          empty string) to only discard it if we will not be performing word
          splitting (W_NOSPLIT|W_NOSPLIT2), since we need to add a quoted null
          argument if the subsequent characters will cause word splitting.
          This is how "" (double-quoted empty string) is handled after a bug
          fix back in August 2010.  Reported by Grisha Levit
          <grishalevit@gmail.com>, fix for Posix interp 888

                                   7/27
                                   ----
subst.c
        - param_expand: change fix from 6/23 (expanding $* in a context where
          word splitting is not performed) to make sure that $* expands to
          something before trying to quote the string.  Bug and fix from
          Andreas Schwab <schwab@suse.de>

lib/readline/bind.c
        - _rl_get_string_variable_value: fix a cut-and-paste error that caused
          the emacs mode string to be displayed for both vi insert and command
          mode strings.  Report and fix from Steve Jones <sjml@slohj.org>

                                   7/28
                                   ----
lib/readline/display.c
        - update_line: we can't use PROMPT_ENDING_INDEX unless we're testing
          against _rl_last_c_pos; if we are testing buffer indices, we need to
          use prompt_last_invisible directly.  Fixes mode string redisplay issue
          with short prompt strings reported by Steve Jones <sjml@slohj.org>

                                    8/4
                                    ---
nojobs.c
        - without_job_control: new function, resets child state that's
          eventually used to decide whether or not to wait_for children

execute_cmd.c
        - initialize_subshell: call without_job_control in both the
          JOB_CONTROL and no job control paths so we can reset the state in
          subshells that will not cause them to wait_for children
          inappropriately.  Fixes bug reported by Dan Cross <crossd@gmail.com>

                                    8/5
                                    ---
configure.ac
        - release version is now `rc2'

bashline.c
        - command_word_completion_function: if direxpand is set, make sure to
          run hint_text through bash_directory_completion_hook, since
          readline will do that and we want to be able to match the results
          readline returns.  Fixes bug reported by Pat Somaru
          <tuf18542@temple.edu>

command.h
        - W_COMPLETE: new flag word value
        - PF_COMPLETE: new flags value for param_expand

subst.h
        - SX_STRIPDQ: new flag, used for string_extract_double_quoted

bashline.c
        - bash_filename_stat_hook,bash_directory_completion_hook: pass W_COMPLETE
          flag to expand_prompt_string

subst.c
        - expand_word_internal: if W_COMPLETE in word->flags, pass PF_COMPLETE
          to param_expand
        - param_expand: if PF_COMPLETE in pflags, pass SX_COMPLETE to
          extract_command_subst.  This allows `"$(echo ~/' to perform
          completion successfully
        - string_extract_double_quoted: turn third argument into a flags arg,
          old STRIPDQ is now set if flags&SX_STRIPDQ
        - string_extract_double_quoted: changed callers, if third argument was
          1, pass SX_STRIPDQ instead
        - expand_word_internal: if W_COMPLETE in word->flags, pass SX_COMPLETE
          in flags to string_extract_double_quoted for case '"'
        - string_extract_double_quoted: if SX_COMPLETE in flags, pass it to
          extract_command_subst
        - expand_word_internal: if W_COMPLETE in word->flags, make sure W_COMPLETE
          is in temp word passed to recursive call to expand_word_internal to
          expand double-quoted string.  Fixes bug reported by John Passaro
          <john.a.passaro@gmail.com>

                                    8/9
                                    ---
[bash-4.4-rc2 frozen]

                                   8/10
                                   ----
subst.c
        - sub_append_string: use size_t variable to store string length to
          avoid integer overflow.  Report from Siteshwar Vashisht
          <svashisht@redhat.com>
        - sub_append_string: `size' argument is now pointer to size_t; changed
          istring_index in expand_word_internal to accommodate change

lib/sh/ufuncs.c
        - include "posixselect.h" if HAVE_SELECT is defined, make sure that
          fd_set and the rest are defined

                                   8/11
                                   ----
lib/readline/histexpand.c
        - history_tokenize_word: use ISDIGIT instead of isdigit for more
          argument checking
        - "chardefs.h": include for ISDIGIT define and <ctype.h>.  Fix from
          Mike Frysinger <vapier@gentoo.org>

lib/sh/eaccess.c,externs.h
        - sh_eaccess: first argument now const char *
        - sh_stataccess,sh_euidaccess: first argument now const char *, since
          sh_stat and sh_eaccess call them.
          Fix from Mike Frysinger <vapier@gentoo.org>

lib/glob/glob.c
        - sh_eaccess: change local prototype

general.[ch]
        - all_digits,legal_identifier,valid_nameref_value,importable_function_name,
          exportable_function_name,check_binary_file,file_exists,file_isdir,
          file_iswdir,same_file,make_absolute,valid_nameref_value: first
          argument (always identifier or filename) is now a `const char *';
          some second filename arguments now `const char *'.
          Fix from Mike Frysinger <vapier@gentoo.org>

configure.ac,config.h.in
        - uintptr_t: make sure it's defined to an integer type wide enough to
          hold a pointer

lib/sh/tmpfile.c
        - sh_seedrand: use `uintptr_t' to cast pointer value to int value,
          instead of allowing truncation to take place, since srandom takes
          an `unsigned int'.
          Fix from Mike Frysinger <vapier@gentoo.org>

arrayfunc.[ch]
        - valid_array_reference,array_variable_name,array_variable_part,
          array_value_internal,array_value,get_array_value: first argument
          (always variable name) now a `const char *'
          Fix from Mike Frysinger <vapier@gentoo.org>

                                   8/19
                                   ----
print_cmd.c
        - xtrace_print_word_list: if (xtflags & 2), don't try to quote the
          words in the LIST argument.  Intended to be used in places where
          the list has not yet been expanded
        - xtrace_print_for_command_head: call xtrace_print_word_list with
          flags argument of 2.  Fixes issue reported by Aharon Robbins
          <arnold@skeeve.com>
        - xtrace_print_select_command_head: call xtrace_print_word_list with
          flags argument of 2

                                   8/21
                                   ----
lib/sh/netopen.c
        - netopen: fix memory leak by freeing allocated path before error
          return.  Fix from Dmitry Goncharov <dgoncharov@users.sf.net>

doc/{bash.1,bashref.texi}
        - change conditional commands description to make it clearer that
          bash doesn't emulate /dev/fd if the OS provides it

                                   8/22
                                   ----
braces.c
        - expand_amble: free partial and tem on failure to allocate memory
          for merged partial+result strvec.  Fix from Dmitry Goncharov
          <dgoncharov@users.sf.net>

                                   8/23
                                   ----
jobs.c
        - wait_for: don't call get_tty_state when a job finishes if we're
          running it as part of programmable completion.  We test
          rl_readline_state.  Fixes bug reported by Jaro Punta
          <silly8888@gmail.com>

                                   8/24
                                   ----
subst.c
        - pat_subst: fix memory leak (mstr).  Fix from Dmitry Goncharov
          <dgoncharov@users.sf.net>
        - split_at_delims: fix memory leak (d2).  Fix from Dmitry Goncharov
          <dgoncharov@users.sf.net>

                                   8/26
                                   ----
subst.c
        - match_upattern,match_wpattern: make sure that a trailing `*' is
          not escaped (preceded by an odd number of backslashes) before we
          append a `*' when checking whether a pattern matches anywhere in
          the string

lib/readline/{input,signals}.c
        - protect instances of SIGQUIT with #ifdef SIGQUIT; apparently
          MinGW doesn't define it
        - protect instances of SIGHUP with #ifdef SIGHUP; apparently
          MinGW doesn't define it.  From a report from Simon Sobisch
          <simonsobisch@gnu.org>

xmalloc.o
        - allocerr: only try to find the break and report it if we're using
          the bash malloc; there's no guarantee that any other malloc is
          using sbrk()

doc/{bash.1,bashref.texi}
        - quote removal: add paragraph mentioning quote removal to beginning
          of expansions section, referencing later paragraph.  Report from
          Michel Lanne <michel.lanne@gmail.com>

                                   8/30
                                   ----
lib/readline/input.c
        - protect instances of SIGALRM and SIGWINCH with #ifdef; apparently
          MinGW doesn't define them.  From a report from Simon Sobisch
          <simonsobisch@gnu.org>

subst.c
        - SPECIAL_VAR: make sure name is not the empty string before going on,
          empty strings can result in unitialized reads
        - CHECK_STRING_OVERRUN: semi-general macro to use in *extract* and
          similar functions to to check whether a function called to parse an
          embedded construct (like a backquoted command substitution) doesn't
          consume the entire string because it's unterminated
        - skip_double_quoted: make sure other extraction functions don't
          consume the entire string (which they can if the construct is
          unterminated) before incrementing the index and going on.  Uses
          CHECK_STRING_OVERRUN
        - extract_dollar_brace_string: check for unterminated embedded
          constructs consuming the entire string with CHECK_STRING_OVERRUN ('`')
        - skip_matched_pair: use CHECK_STRING_OVERRUN to make sure unterminated
          embedded "`", $(, ${ don't cause out-of-bounds reads

[bash-4.4 frozen]