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--------------------------------------
-CHANGES FROM PREVIOUS VERSIONS OF ZSH
--------------------------------------
-
-Changes since zsh version 4.2.0
--------------------------------
-
-- The zftp module supports ports following the hostname in the normal suffix
-  notation, `host:port'.  This requires IPv6 colon-style addresses to be
-  specified in suitably quoted square brackets, for example:
-
-  zftp open '[f000::baaa]'
-  zftp open '[f000::baaa]:ftp'
-
-  (the two are equivalent).
-
-- Special traps, those that don't correspond to signals, i.e. ZERR, DEBUG
-  and EXIT are no longer executed inside other traps.  This caused
-  unnecessary confusion if, for example, both DEBUG and EXIT traps
-  were set.  The new behaviour is more compatible with other shells.
-
-- New option TRAPS_ASYNC which if set allows traps to run while the
-  shell is waiting for a child process.  This is the traditional zsh
-  behaviour; POSIX requires the option to be unset.  In sh/ksh
-  compatibility mode the option is turned off by default and the option
-  letter -T turns it on, for compatibility with FreeBSD sh.
-
-New features between zsh versions 4.0 and 4.2
----------------------------------------------
-
-Configuration:
-- upgraded to use autoconf post-2.50
-- improved compatibility with other shells through shell options,
-  builtin arguments and improved builtin option parsing
-
-Syntax and builtins:
-- new printf builtin
-- `+=' to append to parameters which works for scalars, arrays and (with
-  pairs) associative arrays.
-- enhanced multiple parameter `for' loops:
-    for key value in key1 value1 key2 value2 ...
-  maintaining full compatibility with POSIX syntax.
-- Suffix aliases allow the shell to run a command on a file by suffix,
-  e.g `alias -s ps=gv' makes `foo.ps' execute `gv foo.ps'.  Supplied
-  function zsh-mime-setup uses existing mailcap and mime.types files
-  to set up suitable aliases.  Supplied function pick-web-browser is
-  suitable for finding a browser to show .html etc. files by suffix alias.
-- new option `no_case_glob' for case-insensitive globbing.
-
-Add-on modules and functions:
-- zsh/datetime modules makes date formatting and seconds since EPOCH
-  available inside the shell.
-- zsh/net/tcp module provides builtin interface to TCP through ztcp
-  builtin.  Function suite for interactive and script use with expect-style
-  pattern matching.
-- zsh/net/socket module provides zsocket builtin.
-- zcalc calculator function with full line editing.
-- builtin interface to pcre library
-- zsh/zselect module provides zselect builtin as interface to select
-  system call
-
-Completion system:
-- general improvements to command and context support, low-level functions,
-  display code.
-- in verbose mode, matches with the same description are grouped
-- highly configurable completions for values of specific parameters,
-  specific redirections for specific commands
-- support for bash completion functions (typically zsh native functions are
-  more powerful where available)
-- New completions provided for (some of these may be in later 4.0
-  releases):  valgrind, tidy, texinfo, infocmp, Java classes, larch, limit,
-  locale parameters, netcat, mysqldiff, mt, lsof, elinks, ant, debchange
-  (dch), email addresses, file system types, Perforce, xsltproc.
-  Plus many others.
-
-Line editor:
-- special parameters $PREDISPLAY, $POSTDISPLAY available in function
-  widgets to configure uneditable text (for narrowing)
-- recursive editing
-- supplied widgets read-from-minibuffer, replace-string use these features
-  (more intuitive prompting and argument reading than 4.0)
-- access to killed text via $CUTBUFFER and $killring
-- supplied highly configurable word widgets forward-word-match etc., can
-  set what constitutes a word interactively or in startup script
-  (implement bash-style behaviour, replacing previous bash-* word widgets)
-- interface to incremental search via $LASTSEARCH
-- better handling of keymaps in zle and widgets
-- better support for output from user-defined widgets while zle is active
-- tetris game which runs entirely in zle
-- several other contributed widgets
-
-Local internal improvements:
-- disowned jobs are automatically restarted
-- \u and \U print escapes for Unicode
-- read -d <delimiter> allows a custom line ending.
-- read -t <timeout>.
-- line numbers in error messages and $PS4 output are more consistent
-- `=prog' expands only paths, no longer aliases for consistency
-- job display in prompts; `jobs' command output can be piped
-- prompts: new $RPROMPT2, %^, %j, %y, enhanced %{, %}, %_.
-- rand48() function in zsh/mathfunc for better randomness in arithmetic
-  (if the corresponding math library function is present)
-- $SECONDS parameter can be made floating point via `typeset -F SECONDS'
-  for better timing accuracy
-- improvements to command line history mechanism
-- job table is dynamically sized, preventing overflow (typically seen
-  previously in complex completions).
-- many bugfixes
-
-
-New features in zsh version 4.0.1
----------------------------------
-
-Compared with 3.1.9, there are mostly incremental improvements to
-  - the new completion system --- more functions, completers, styles...
-  - the line editor
-  - handling of signals and traps
-  - the configuration system, particularly for modules
-  - Cygwin support (now essentially complete)
-  - arithmetic evaluation
-  - the zpty (pseudoterminal handling) module
-  - the test suite
-plus various bug fixes and compatibility improvements.
-
-The alias modules (zle.so as an alias for zsh/zle.so, etc.) have been
-removed; use `zmodload -A' to load modules under other names.  This is
-irrelevant if you are upgrading from 3.0.
-
-Compared with the 3.0 series of releases (the last stable set), the most
-significant of a large number of improvements in the shell are:
-  - Dynamically loadable modules with hierarchical naming system
-  - Shell functions as editor functions, with much additional builtin support
-  - Incredibly rich new completion system; just needs a single
-    initialization command to provide completion for all sorts of commands
-    and contexts
-  - Associative arrays
-  - Lots of new features in parameter substitution and globbing; more
-    logical handling of nested parameter substitutions
-  - Rewritten pattern-matching (globbing) code supports approximate
-    and case-insensitive matching and backreferences
-  - Various custom modules for pty's, FTP, special parameters, etc.
-  - Rewrites of many internal parts of the code: execution code to
-    provide compilation to internal representation, pattern matching
-  - Floating point arithmetic and mathematical functions module
-  - A test suite
-  - Various new options for compatibility with this, that and the other
-See the 3.1.x changes below for more detail.
-
-New features in zsh version 3.1.8 and 3.1.9
--------------------------------------------
-These are primarily bug-fix versions.  There are only a few user-visible
-changes.
- - Array slices ${array[a,b]} with b < a now correctly have zero length.
-
-New features in zsh version 3.1.7
----------------------------------
-Further enhancements to new completion system:
- - Comprehensive context-sensitive configuration via `styles', which
-   can be set by the menu-driven front end in compinstall
- - General mechanism for setting patterns to be ignored in a completion;
-   overriding  of patterns to be matched for functions
- - New completers: _prefix to complete word before cursor, _ignored
-   to complete using words so far ignored (like $fignore but more
-   powerful), _history to complete words from shell history
- - Multiple use of completers with different options, similarly splitting
-   of different types of completion (`tags') so they are considered with
-   different styles
- - Many more supplied completions for standard commands which work out of
-   the box, and better handling of command line options/arguments which
-   behave in the usual way   
- - $fpath now set up to use installed functions by default; functions
-   can be loaded just by `autoload -U compinit; compinit'
- - Much improved handling of nested quoting and nested braces
- - New LIST_PACKED and LIST_ROWS_FIRST completion options and corresponding
-   styles
- - compctl library separated out (frozen but still supported)
- - User-friendly introduction available at zsh website
-   http://sunsite.auc.dk/zsh/
-
-Additions to complist listing library (coloured completion and menu
-selection):
- - Listings can be shown page by page (are by default for new completion)
- - Menu selection allows full up and down scrolling of long lists
-
-Other editing features:
- - new parameters $PENDING, $MARK, $BUFFERLINES
- - Easy display of a prompt from within an editing widget
-
-Code parsing, storing and execution:
- - Completely new system of storing code internally, greatly optimised
- - Much less memory for shell functions etc.
- - Can compile shell functions to .zwc `wordcode' functions for fast
-   loading
- - Can create `digest' files of entire directories in .zwc format
-
-Parameters:
- - Floating point support added, similar to ksh93, `typeset -F' and
-   `typeset -E' declare floating point variables; usual C/Fortran-like
-   rules for integer/float conversion
- - Mathematical library zsh/mathfunc contains all the standard mathematical
-   functions for use in arithmetical expressions
- - Improved parsing of arithmetical expressions and better error messages
- - Special parameters can be made local
- - `typeset -h' hides specialness of parameters, either as parameter
-   attribute or when declaring new local variable
- - Local parameters can now be exported as in other shells; new option
-   GLOBAL_EXPORTS on by default provides old behaviour that `typeset -x'
-   referred to global parameters.
- - zsh/parameter module enhanced: now needed for new completion; parameters
-   provided have `-h' flag set so that they are hidden by `typeset', so
-   that existing functions don't need to be changed
- - Quotes can be stripped from parameter values with ${(Q)...}, providing
-   reverse of ${(q...)...} facility
-
-Globbing and pattern matching:
- - Pattern matching rewritten for efficiency
- - Supports `backreferences', i.e. extracting parenthesised chunks of
-   matches, e.g.
-     [[ $foo = (#b)(*/)[^/]* ]]
-   stores the part of $foo up to the last / in $match[1] and the indexes of
-   the match in $mbegin[1], $mend[1].  (#m) is also available to set $MATCH
-   to the entire match and corresponding $MBEGIN, $MEND:  useful in
-   parameter substitutions like ${.../.../...}.
- - (#s) and (#e) match start and end of pattern like ^ and $ in regular
-   expression, useful in complex expressions such as ((#s)|/)dirname((#e)|/)
-   and in parameter expressions.
-
- - Depth-first/last listing of recursive glob lists
-
-Functions etc.:
- - `autoload -X' inside a function body instructs the shell to
-   bootstrap the function at that point
- - `autoload +X fn' says load the function fn but don't execute it
- - Prompt `themes' make customization of prompts easier
-
-Modules:
- - New hierarchical naming scheme for modules; supplied modules go into
-   zsh subdirectory, so zle becomes zsh/zle etc.; aliases supplied for
-   compatibility for existing code, but the new format should be used in
-   future.
- - zmodload is more consistent between dynamically and statically linked
-   shells
- - zsh/zftp and its function suite support multiple sessions (zfsession
-   command); zftransfer allows transfer of files between two ftp sessions
-   with no local file; use styles for e.g. progress style; IPv6 supported;
-   recursive put `zfput -r' for uploads
- - zsh/zpty module creates pseudoterminal and allows builtin `expect'-like
-   behaviour
-
-Other:
- - Test suite, not yet complete (`make test')
- - use of Linux task limits
- - Many fixes including output redirection with `setopt xtrace' and
-   other redirection fixes; NIS+ problem.
- - Better null-command behaviour in sh and csh emulation
- - Internal memory usage optimisations
-
-New features in zsh version 3.1.6 (beta version)
-------------------------------------------------
-Note also the changes for 3.0.6, which include changes between 3.1.5. and
-3.1.6.
-
-New completion system via shell functions; massive degree of
-programmability and configurability:
- - ready-made function suite to use, see zshcompsys(1)
- - approximate completion and spelling correction via completion
- - control over matching for case-independence, partial word completion, etc.
- - menu selection:  choose a completion by moving the cursor
- - coloured completion lists
- - completion of filenames in quotes is now more reliable; splitting
-   quoted strings into command arguments is also possible.
-
-Other editing changes:
-  - enhancements to function/editing interface:  new parameters, numeric
-    arguments, string argument passing, reading keys from widgets.
-  - the old history-search-{back,for}ward behaviour and bindings have
-    returned (up to minor details).
-  - BASH_AUTO_LIST option to show completion list only on second key press.
-  - the ZBEEP parameter gives a string to output instead of beeping,
-    allowing you to have a visual bell.
-
-History changes: new options HIST_NO_FUNCTIONS, HIST_EXPIRE_DUPS_FIRST,
-HIST_FIND_NO_DUPS, HIST_IGNORE_ALL_DUPS, INC_APPEND_HISTORY,
-HIST_SAVE_NO_DUPS, SHARE_HISTORY, allow better control of when history is
-read and written and how duplicates are handled.  New format for history
-saves.
-
-Associative arrays plus enhanced parameter substitutions to retrieve keys
-and values.
-
-Globbing changes:
-  - Case-insensitive and approximate globbing.
-  - Ordering and indexing of globbing matches, e.g. *(om[1]) picks
-    most recently modified file.
-  - General file mode qualifier with chmod(1)-like syntax, e.g. *(f:u+wx:)
-
-New loadable modules:
-  - zftp, plus associated function suite, for turning your zsh session
-    into an FTP session too
-  - parameter, for examining and altering shell hash tables via an
-    associative array interface.
-  - mapfile, for reading and writing external files via an associative
-    array interface.
-
-Debugging and prompt enhancements:
-  - $PS4 can contain %i for $LINENO as well as %N for script or function
-    names (default PS4 changed), also %_ for current shell structure
-    executing;
-  - Prompt truncation %<...< is now more flexible: it applies to a
-    whole section of the prompt, not just one escape.  You need to put
-    %<< after the truncated escape to get the old behaviour.
-  - %20(l.yes.no) in prompts prints yes if at least 20 characters have
-    been output, else no (e.g. for outputting extra newlines).
-
-Parameter and expansion changes
-  - `typeset -t MYPATH mypath' creates tied path/PATH-like variables
-  - `typeset -g' allows operations on parameters without making them local
-  - New expansions
-    - ${(t)param} prints type information for $param
-    - ${(P)param} treats value of $param as the name of a param to
-      substitute
-    - ${foo:q} can quote replaced parameter text from expansion
-    - ${foo/old/new} substitution, like bash; also (S) flag for shortest
-      match
-    - $foo[(b.2.i)bar] starts searching $foo for bar starting at 2nd match
-
-Builtin and function changes
-  - stat module: `stat -H hash foo' gives you e.g. $hash[mtime]
-  - `autoload -U' autoloads functions without alias expansion.
-
-Other new options:
-  - LOCAL_TRAPS allows signal traps to be local to functions (as in ksh).
-  - NO_RCS can now be turned on at any point in initialization files.
-  - NO_GLOBAL_RCS can force /etc/z* files after /etc/zshenv to be skipped.
-    (Please don't use this as an excuse to stuff more into /etc/zshenv!)
-  - Existing MAGIC_EQUAL_SUBST option is more useful; any argument containing
-    ...=~...:~... will perform filename expansion on the ~ (previously,
-    the string before `=' had to look like a parameter name).
-
-Configuration changes:
-  - Generation of signal names should be more reliable
-  - Customizable installation of shell functions from distribution.
-
-New features in zsh version 3.0.6
----------------------------------
-
-Most of these changes are designed to improve compatibility with zsh
-version 3.1.6, the latest development release.  However, this release also
-fixes all known Year 2000 (Y2K) bugs in zsh 3.0.
-
-History changes:
-  - whitespace between words is ignored in history searches.
-  - new option HIST_REDUCE_BLANKS removes extra whitespace in the stored
-    history.
-  - support for reading (but not writing) version 3.1.6 history files.
-
-Globbing changes:
-  - the a, c, and m glob qualifiers can now test time in seconds.
-  - globbing of number ranges behaves more like character ranges in that
-    it can match a prefix of a number, e.g. `<1-5>*' matches 1, 2, 3, 4,
-    5, 17, 23skiddoo, 5986, etc., but not 6, 7, 8ball, 911, etc.
-
-Parameter and expansion changes:
-  - expansion of ~ and other globbing flags via ${~param} do not depend
-    upon EXTENDED_GLOB (bug fix).
-  - nested parameter substitutions require braces (this was always the
-    documented behavior, but previous parsers didn't enforce it).
-  - quote only nested expansion, e.g. ${(f)"$(<file)"} reads complete
-    `file', then splits lines into array.
-
-Builtin and function changes:
-  - `typeset -U' works on the colon-array version of linked parameters.
-  - `typeset +f' and `functions +' output the names (only) of functions.
-  - `emulate -L' has the effect of `setopt localoptions'.
-  - in fn1() { local foo; unset foo; foo=bar; }, foo is restored at local
-    level, whereas if the `unset foo' appeared in a nested function it
-    would have been restored at global level, which was presumably wrong.
-  - `foo=bar >&file' is a redirection, not a NULLCMD.
-  - any single complex command, such as `case ... esac', parses as if
-    semicolon-terminated (bug fix).
-  - the shell function `preexec', if defined, is run after parsing each
-    command line but before executing the command.
-
-Other changes:
-  - the option PRINT_EIGHT_BIT causes zsh to emit raw bytes in prompts
-    and completion lists even if the system ctype(3) package says that
-    those bytes are not "printable."
-
-Debugging enhancements:
-  - LINENO is now very much more useful in scripts and functions and is
-    reported correctly in most error messages.
-  - ERREXIT behavior is now consistent with newer Bourne-like shells,
-    e.g. with respect to `if' tests that fail.
-
-Configuration changes:
-  - Large file and 64-bit integers on 32-bit machines supported where
-    provided by OS.
-  - a few more system features, such as getpwnam/getpwuid, are tested for.
-
-
-New features in zsh version 3.1 (beta version)
-----------------------------------------------
-
-On most operating systems zsh can load binary modules dynamically at
-run-time.  ZLE and the compctl builtin are now reside in a separate
-module which is loaded automatically on demand.
-
-for ((expr; expr; expr)) do ... done loop syntax from AT&T ksh93 is
-now supported.
-
-POSIX globbing character classes ([:alnum:] etc.) are now supported.
-
-ksh's case fall-through feature (;&) is supported.
-
-ksh93's $'' quoting syntax is supported.
-
-Restricted mode is now supported.  This is controlled by the new option
-RESTRICTED (-r).
-
-New options BARE_GLOB_QUAL, HIST_NO_FUNCTIONS (alias NO_LOG), KSH_GLOB,
-PRINT_EIGHT_BIT, PROMPT_BANG, PROMPT_PERCENT, RM_STAR_WAIT.
-
-Options ALWAYS_LAST_PROMPT, APPEND_HISTORY, AUTO_LIST, AUTO_MENU,
-AUTO_PARAM_KEYS, AUTO_PARAM_SLASH, AUTO_REMOVE_SLASH, LIST_AMBIGUOUS
-and LIST_TYPES are now on by default.
-
-In ZLE, arbitrarily many keymaps can be defined.  Multi-character
-keybindings now work.
-
-Completion can be performed within a brace expansion.
-
-EMACS-like universal-argument function.
-
-
-New features in zsh version 3.0
--------------------------------
-
-Trailing "/" in a glob pattern now works like in other shell thus it
-can no longer be used as a shorthand for "(/)".
-
-Much improved sh/ksh emulation.  When zsh is invoked as sh it mostly
-conforms to POSIX 1003.2.
-
-Enhanced parameter expansion features: new flags: A, @, e, W, p, f, F.
-Expansions can be nested.  For example,
-"${${(M)${(f@)$(<builtin.pro)}:#char*}[2][(w)3]}" expands to the third
-word of the second line of builtin.pro which begins with char.  See
-zshexpn(1) for the details.
-
-***/foo glob does recursive directory search following symbolic links.
-
-Traps defined by the trap builtin are now executed in the current shell
-environment and not as a shell function.  This means that $1 is not set
-to the signal number.  Of course the TRAPxxx functions continue working
-as before.
-
-Traps defined by the trap builtin are reset to their default values in
-subshells.
-
-Option names can be prefixed by `no' to unset an option.
-setopt no_option_name is the same as unsetopt option_name.
-This change affects the output of the setopt and unsetopt
-builtins when these are invoked without arguments.  See
-the zshoptions manual page for more explanation.
-
-!, {, } and [[ are now reserved words.  Things like [[-z $foo]] or {foo}
-should not be used.  {foo} still works if the IGNORE_BRACES option is not
-set but this feature may be removed in the future.  [[ -z $foo ]] and
-{ foo } should be used instead.
-
-HOSTTYPE special parameter is removed.  The new OSTYPE, MACHTYPE and
-VENDOR parameters should be used instead.
-
-VERSION parameter is renamed to ZSH_VERSION
-
-exec now saves the history in interactive shells.  If you do not like this
-behaviour you can alias exec to 'unset HISTFILE ; exec'.
-
-${~spec}, ${=spec} and ${^spec} used to toggle the effect of
-globsubst/shwordsplit/rcexpandparam.  Now these force the corresponding
-option on. ~, = or ^ can be doubled to force the relevant option off for
-the substitution.
-
-Explicitly requested word splitting like ${=spec} or ${(s:delim:)spec}
-will be executed even if the substitution is double quoted.
-
-The right-hand side of assignments are no longer globbed by default hence
-assignment foo=* will assign '*' as a value of foo.  Use the foo=( * )
-array assignment syntax to get the old behaviour.  Alternatively the
-GLOB_ASSIGN can be set to emulate the old behaviour but the usage of this
-option is strongly discouraged and this option may be completely removed in
-the future.
-
-foo=$bar no longer creates an array even if bar is an array.  Use
-foo=( $bar ) or even better, foo=( "$bar[@]" ) instead.
-
-When foo is an array parameter ${#foo} will always return the length of the
-array even if the substitution is double quoted.  ${(c)#foo} should be used
-to get back the old behaviour.
-
-When the prompt_subst option is set prompts are fully expanded using
-parameter expansion, command substitution and arithmetic expansion.
-In 2.5 backquote substitution was not performed in the prompts so this
-change might cause problems in some startup scripts if ` is used literally
-in prompts.
-
-History substitution is now not performed if the history escape character
-appears in a single-quoted string.  This may break some interactive shell
-functions which use \! in single-quoted strings.
-
-The UID, EUID, GID, EGID parameters can be assigned now. The assignment
-executes the setuid(), seteuid(), setgid(), setegid() respectively.  On
-systems where setuid and seteuid is not supported these functions are
-emulated using setreuid or setresuid which may result in a different
-behaviour.
-
-Assigning the USERNAME parameter will call setuid(uid) where uid is the
-user id of the specified user.
-
-The privileged (-p) option is automatically set on invocation if euid != uid
-or egid != gid.  If this option is set no user startup files are sourced.
-The shell will drop privileges when this option is unset by resetting its
-euid to uid and its egid to gid.
-
-The =number substitution for accessing the directory stack is changed to
-~number to allow =command substitution when a command name begins with a 
-digit.
-
-<> is a redirection operator which opens the standard input for both
-reading and writing.  To match a number use <->.
-
-Option letters -1 and -C for PRINT_EXIT_VALUE and NO_CLOBBER are swapped:
-`set -C' sets NO_CLOBBER and `set -1' sets PRINT_EXIT_VALUE.
-
-AUTO_PUSHD behaviour is changed.  Now cd without arguments will always go
-to the $HOME directory even if AUTO_PUSHD is set and PUSHD_TO_HOME is not
-set.  If you preferred the old behaviour you can alias cd to pushd.
-
-IFS word splitting with SH_WORD_SPLIT and the splitting of the input in the
-read builtin has changed in cases when IFS contains characters other than
-<space>, <tab>, <newline>.  See the description of IFS in the zshparam
-manual page for more details.
-
-
-New features in zsh version 2.5
--------------------------------
-
-Greatly expanded completion possibilities.  Programmable completion
-allows detailed control over what arguments of what commands can be
-completed to what.  See dots/zcomp in the distribution for examples.
-
-Expand filenames with ~ and = on the right hand side of parameter
-assignments.  New option MAGIC_EQUAL_SUBST to do it in all
-identifier=expression arguments.
-
-${+name} becomes 1 or 0 if name is set or unset.  ${~spec} toggles
-GLOB_SUBST in substitution.  Parameter substitution takes lots
-of flags in the format ${(flags)name}.
-
-New glob qualifiers for block/character special files, times in glob
-qualifiers can be in months, weeks, days, hours, minutes.  Qualifiers can
-work on links or on what they point to.  Qualifiers separated by commas
-are or-ed.
-
-New parameter substitution modifiers (fFwW) to repeat actions.  New
-option CSH_JUNKIE_HISTORY.
-
-New line editor functions history-beginning-search-backward,
-history-beginning-search-forward, expand-or-complete-prefix, push-input,
-push-line-or-edit.
-
-Assign to part of a string, use qualifiers on string subscription with
-$foo[(qual)2,5]
-
-New parameters: EGID, EUID, KEYTIMEOUT
-
-New prompt escape sequence %_ to get constructs like for and while in
-the secondary prompt.  %E in prompt clears to end of screen.
-
-Conditional expressions in PROMPT and WATCHFMT.
-
-New options ALWAYS_LAST_PROMPT, ALWAYS_TO_END, AUTO_PARAM_KEYS,
-COMPLETE_ALIASES, COMPLETE_IN_WORD, CSH_JUNKIE_HISTORY, GLOB_SUBST,
-LIST_AMBIGUOUS, MAGIC_EQUAL_SUBST, NO_FLOW_CONTROL, PROMPT_SUBST
-
-New option -m to many builtins makes arguments subject to pattern
-matching.
-
-Bindkey can now bind both key sequences and prefixes of those.  You can
-for example bind ESC and function keys sending ESC sequences.
-
-Additional options to read builtin to use in functions called by
-completion.
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-New options to print to sort arguments and print them in columns.
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-Some additional resource limits can be specified.
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-Some editor functions now work in the minibuffer.