1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2010-2013 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
9 This file is about changes in Emacs version 24.
11 See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12 and NEWS.1-17 for changes in older Emacs versions.
14 You can narrow news to a specific version by calling `view-emacs-news'
15 with a prefix argument or by typing C-u C-h C-n.
18 +++ indicates that the appropriate manual has already been updated.
19 --- means no change in the manuals is called for.
20 When you add a new item, please add it without either +++ or ---
21 so we will look at it and add it to the manual.
24 * Installation Changes in Emacs 24.4
26 ** Emacs can be compiled with POSIX ACL support.
27 This happens by default if a suitable support library is found at
28 build time, like libacl on GNU/Linux. To prevent this, use the
29 configure option `--without-acl'.
31 * Startup Changes in Emacs 24.4
32 * Changes in Emacs 24.4
35 ** `apropos-variable' is now `apropos-user-option'
36 `apropos-user-option' shows all user options while `apropos-variable'
37 shows all variables. When called with a universal prefix argument,
38 the two commands swap their behaviors. When `apropos-do-all' is
39 non-nil, they output the same results.
42 ** `eval-defun' on an already defined defcustom calls the :set function,
45 ** The option `set-mark-default-inactive' has been deleted.
46 This unfinished feature was introduced by accident in Emacs 23.1;
47 simply disabling Transient Mark mode does the same thing.
49 ** `initial-buffer-choice' can now specify a function to set up the
52 ** ACL support has been added.
54 *** Emacs preserves the ACL entries of files when backing up.
56 *** New functions `file-acl' and `set-file-acl' get and set the ACL
57 entries of a file. On GNU/Linux, the POSIX ACL interface is used via
58 libacl. On MS-Windows, the NT Security APIs are used to emulate the
61 * Editing Changes in Emacs 24.4
63 ** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
64 bound to <f11> and M-<f10>, respectively.
67 * Changes in Specialized Modes and Packages in Emacs 24.4
71 *** Battery information via the BSD `apm' utility is now supported.
75 *** New macro cl-tagbody.
78 *** letf is now just an alias for cl-letf.
82 *** Calc by default now uses the Gregorian calendar for all dates, and
83 uses January 1, 1 AD as its day number 1. Previously Calc used the
84 Julian calendar for dates before September 14, 1752, and it used
85 December 31, 1 BC as its day number 1; the new scheme is more
86 consistent with Calendar's calendrical system and day numbering.
88 *** The new variable `calc-gregorian-switch' lets you configure the
89 date when Calc switches from the Julian to the Gregorian calendar.
90 Nil, the default value, means to always use the Gregorian calendar.
91 The value (YEAR MONTH DAY) means to start using the Gregorian calendar
96 *** New option `erc-accidental-paste-threshold-seconds'.
97 If set to a number, this can be used to avoid accidentally paste large
98 amounts of data into the ERC input.
100 ** Icomplete is a bit more like IDO.
101 *** key bindings to navigate through and select the completions.
102 *** The icomplete-separator is customizable, and its default has changed.
103 *** Removed icomplete-show-key-bindings.
107 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
108 and adds it to the search string.
110 ** MH-E has been updated to MH-E version 8.4.
111 See MH-E-NEWS for details.
114 ** The unrmail command converts from BABYL to mboxrd rather than mboxo.
115 Customize `unrmail-mbox-format' to change this.
118 ** Similarly, customize `rmail-mbox-format' to influence some minor aspects
119 of how Rmail displays non-MIME messages.
122 ** New function `ses-rename-cell' to give SES cells arbitrary names.
124 ** trace-function was largely rewritten.
125 New features include:
126 - no prompting for the destination buffer, unless a prefix-arg was used.
127 - additionally to prompting for a destination buffer, when a prefix-arg is
128 used, the user can enter a "context", i.e. Lisp expression whose value at the
129 time the function is entered/exited will be printed along with the function
130 name and arguments. Useful to trace the value of (current-buffer) or
131 (point) when the function is invoked.
133 ** New command `delete-duplicate-lines' has two types of operation:
134 when its arg ADJACENT is non-nil (when called interactively with C-u C-u)
135 it works like the utility `uniq'. Otherwise by default it deletes
136 duplicate lines everywhere in the region without regard to adjacency.
140 *** New connection method "adb", which allows to access Android
141 devices by the Android Debug Bridge. The variable `tramp-adb-sdk-dir'
142 must be set to the Android SDK installation directory.
144 *** Handlers for `file-acl' and `set-file-acl' for remote machines
145 which support POSIX ACLs.
149 *** The commands `woman-default-faces' and `woman-monochrome-faces'
150 are obsolete. Customize the `woman-* faces instead.
152 ** Obsolete packages:
154 *** longlines.el is obsolete; use visual-line-mode instead.
156 *** terminal.el is obsolete; use term.el instead.
159 * New Modes and Packages in Emacs 24.4
160 ** New nadvice.el package offering lighter-weight advice facilities.
162 - add-function/remove-function which can be used to add/remove code on any
163 function-carrying place, such as process-filters or `<foo>-function' hooks.
164 - advice-add/advice-remove to add/remove a piece of advice on a named function,
165 much like `defadvice' does.
167 * Incompatible Lisp Changes in Emacs 24.4
169 ** frame-local variables that affect redisplay do not work any more.
170 More specifically, the redisplay does not bother to check for a frame-local
171 value when looking up variables.
173 ** nil and "unbound" are indistinguishable in symbol-function.
174 `symbol-function' never signals `void-function' any more.
175 `fboundp' returns non-nil if the symbol was `fset' to nil.
177 ** `defadvice' does not honor the `freeze' flag and cannot advise
178 special-forms any more.
180 ** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
181 VAR was bound to nil which was not tremendously useful and just lead to
182 spurious warnings about an unused var.
184 ** The return value of `backup-buffer' has changed.
185 The second argument is no longer an SELinux context, instead it is an
186 alist of extended attributes as returned by the new function
187 `file-extended-attributes'. The attributes can be applied to another
188 file using `set-file-extended-attributes'.
190 * Lisp changes in Emacs 24.4
192 ** Support for filesystem notifications.
193 Emacs now supports notifications of filesystem changes, such as
194 creation, modification, and deletion of files. This requires the
195 'inotify' API on GNU/Linux systems. On MS-Windows systems, this is
196 supported for Windows XP and newer versions.
200 *** The `face-spec-set' is now analogous to `setq' for face specs.
201 Its third arg now accepts values specifying exactly which face spec to
202 set (defface, custom, or user spec), and it directly sets the relevant
203 property using the supplied face spec.
205 *** Face specs set via Custom themes now replace the `defface' spec
206 rather than inheriting from it (as do face specs set via Customize).
208 *** New face characteristic (supports :underline (:style wave))
209 specifies whether or not the terminal can display a wavy line.
211 ** time-to-seconds is not obsolete any more.
212 ** New function special-form-p.
213 ** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
214 text-property on the first char.
216 ** The `defalias-fset-function' property lets you catch calls to defalias
217 and redirect them to your own function instead of `fset'.
219 ** The 9th element returned by `file-attributes' is now unspecified.
220 Formerly, it was t if the file's gid would change if file were deleted
221 and recreated. This value has been inaccurate for years on many
222 platforms, and nobody seems to have noticed or cared.
224 ** The function `file-ownership-preserved-p' now has an optional
225 argument GROUP which causes it check for file group too. This can be
226 used in place of the 9th element of `file-attributes'.
228 ** New functions `group-gid' and `group-real-gid'.
230 ** The 6th argument to `copy-file' has been renamed to
231 `preserve-extended-attributes' as it now handles both SELinux context
234 * Changes in Emacs 24.4 on non-free operating systems
237 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
238 The backtrace is written to the 'emacs_backtrace.txt' file in the
239 directory where Emacs was running.
242 * Installation Changes in Emacs 24.3
244 ** The default X toolkit is now Gtk+ version 3.
245 If you don't pass `--with-x-toolkit' to configure, or if you use
246 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
247 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
248 You can explicitly require a specific version by passing
249 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
251 ** New configure option `--enable-link-time-optimization', to utilize
252 an appropriate feature provided by GCC since version 4.5.0.
254 ** New configure option `--without-all' to disable most of the optional
255 features (image support, etc.) that are normally enabled by default.
257 ** New configure option `--enable-gcc-warnings' (for developing/debugging
258 Emacs). If building with GCC, this enables compile-time checks that
259 warn about possibly-questionable C code. On a recent GNU system there
260 should be no warnings; on older and on non-GNU systems the generated
261 warnings may be useful.
263 ** The configure option `--enable-use-lisp-union-type' has been
264 renamed to `--enable-check-lisp-object-type', as the resulting
265 Lisp_Object type no longer uses a union to implement the compile time
266 check that this option enables.
268 ** The configure option `--disable-maintainer-mode' has been removed,
269 as it was confusingly-named and rarely useful.
271 ** The configure options `--program-prefix', `--program-suffix', and
272 `--program-transform-name' apply to more than just the installed
273 binaries. Now they also affect the man pages, icons, and the
274 etc/emacs.desktop file; but not the info pages, since this would break
275 links between the various manuals.
277 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
278 overwriting "emacs" in the installation bin/ directory with a link
281 ** Emacs uses libtinfo in preference to libncurses, if available.
283 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
284 /usr/pkg/lib to the linker search path. You must add them yourself if
287 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
288 (from the bin and libexec directories, respectively). The former is
289 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
292 * Startup Changes in Emacs 24.3
294 ** Emacs no longer searches for `leim-list.el' files beneath the standard
295 lisp/ directory. There should not be any there anyway. If you have
296 been adding them there, put them somewhere else; e.g., site-lisp.
298 ** The `--no-site-lisp' command line option now works for Nextstep builds.
301 * Changes in Emacs 24.3
305 *** `C-h f' (`describe-function') can now perform autoloading.
306 When this command is called for an autoloaded function whose docstring
307 contains a key substitution construct, that function's library is
308 automatically loaded, so that the documentation can be shown
309 correctly. To disable this, set `help-enable-auto-load' to nil.
311 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
312 even after their associated libraries have been loaded (and the
313 autoloads have been redefined as functions).
317 *** Images displayed via ImageMagick now support transparency and the
318 :background image specification property.
320 *** When available, ImageMagick support is automatically enabled.
321 It is no longer necessary to call `imagemagick-register-types'
322 explicitly to install ImageMagick image types; that function is called
323 automatically at startup, or when customizing an imagemagick- option.
325 *** Setting `imagemagick-types-inhibit' to t now disables the use of
326 ImageMagick to view images. (You must call `imagemagick-register-types'
327 afterwards if you do not use customize to change this.)
329 *** The new variable `imagemagick-enabled-types' also affects which
330 ImageMagick types are treated as images. The function
331 `imagemagick-filter-types' returns the list of types that will be
336 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
337 next and previous path separator, respectively.
339 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
340 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
341 non-nil before enabling the mode.
345 *** New option `mode-line-default-help-echo' specifies the help text
346 (shown in a tooltip or in the echo area) for any part of the mode line
347 that does not have its own specialized help text.
349 *** You can now click mouse-3 in the coding system indicator to invoke
350 `set-buffer-file-coding-system'.
354 *** emacsclient now obeys string values for `initial-buffer-choice',
355 if it is told to open a new frame without specifying any file to visit
356 or expression to evaluate.
358 *** New option `server-auth-key' specifies a shared server key.
360 ** Emacs now generates backtraces on fatal errors.
361 On encountering a fatal error, Emacs now outputs a textual description
362 of the fatal signal, and a short backtrace on platforms like glibc
363 that support backtraces.
365 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
366 This minor mode replaces `toggle-read-only', which is now obsolete.
368 ** Most `y-or-n' prompts now allow you to scroll the selected window.
369 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
370 respectively, without exiting from the prompt.
372 ** In the Package Menu, newly-available packages are listed as "new",
373 and sorted above the other "available" packages by default.
375 ** If your Emacs was built from a bzr checkout, the new variable
376 `emacs-bzr-version' contains information about the bzr revision used.
378 ** New option `create-lockfiles' specifies usage of lockfiles.
379 It defaults to t. Changing it to nil inhibits the creation of lock
380 files (use this with caution).
382 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
383 variables on remote hosts.
385 ** The entry for PCL-CVS has been removed from the Tools menu.
386 The PCL-CVS commands are still available via the keyboard.
388 ** Using "unibyte: t" in Lisp source files is obsolete.
389 Use "coding: raw-text" instead.
391 ** Internationalization
393 *** New language environment: Persian.
395 *** New input method `vietnamese-vni'.
397 ** Nextstep (GNUstep / Mac OS X) port
399 *** Support for fullscreen and the frame parameter fullscreen.
401 *** A file dialog is used for open/save operations initiated from the
405 * Editing Changes in Emacs 24.3
407 ** Search and Replace
409 *** Non-regexp Isearch now performs "lax" space matching.
410 Each sequence of spaces in the supplied search string may match any
411 sequence of one or more whitespace characters, as specified by the
412 variable `search-whitespace-regexp'. (This variable is also used by a
413 similar existing feature for regexp Isearch.)
415 *** New Isearch command `M-s SPC' toggles lax space matching.
416 This applies to both ordinary and regexp Isearch.
418 *** New option `replace-lax-whitespace'.
419 If non-nil, `query-replace' uses flexible whitespace matching too.
422 *** Global `M-s _' starts a symbol (identifier) incremental search,
423 and `M-s _' in Isearch toggles symbol search mode.
424 `M-s c' in Isearch toggles search case-sensitivity.
426 ** Navigation commands
428 *** New binding `M-g c' for `goto-char'.
430 *** New binding `M-g TAB' for `move-to-column'.
432 *** `M-g TAB' (`move-to-column') prompts for a column number if called
433 interactively with no prefix arg. Previously, it moved to column 1.
435 ** New option `yank-handled-properties' allows processing of text
436 properties on yanked text, in ways that are more general than just
437 removing them (as is done by `yank-excluded-properties').
439 ** New option `delete-trailing-lines' specifies whether
440 M-x delete-trailing-whitespace should delete trailing lines at the end
441 of the buffer. It defaults to t.
443 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
445 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
446 `ucs-insert' is now an obsolete alias for `insert-char'.
448 ** The `z' key no longer has a binding in most special modes.
449 It used to be bound to `kill-this-buffer', but `z' is too easy to
452 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
453 It copies the region-rectangle as the last rectangle kill.
457 *** `C-x r +' is now overloaded to invoke `append-to-register'.
459 *** New option `register-separator' specifies the register containing
460 the text to put between collected texts for use with
461 M-x append-to-register and M-x prepend-to-register.
464 * Changes in Specialized Modes and Packages in Emacs 24.3
466 ** Common Lisp emulation (CL)
468 *** CL's main entry is now (require 'cl-lib).
469 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
470 i.e., all its definitions have the "cl-" prefix (and internal definitions
471 use the "cl--" prefix).
473 If `cl' provided a feature under the name `foo', then `cl-lib'
474 provides it under the name `cl-foo' instead; with the exceptions of the
475 few `cl' definitions that had to use `foo*' to avoid conflicts with
476 pre-existing Elisp entities. These have been renamed to `cl-foo'
477 rather than `cl-foo*'.
479 The old `cl' is now deprecated and is mainly just a bunch of aliases that
480 provide the old, non-prefixed names. Some exceptions are listed below:
482 *** `cl-flet' is not like `flet' (which is deprecated).
483 Instead it obeys the behavior of Common-Lisp's `flet'.
484 In particular, in cl-flet function definitions are lexically scoped,
485 whereas in flet the scoping is dynamic.
487 *** `cl-labels' is slightly different from `labels'.
488 The difference is that it relies on the `lexical-binding' machinery
489 (as opposed to the `lexical-let' machinery used previously) to capture
490 definitions in closures, so such closures will only work if `lexical-binding'
493 *** `cl-letf' is not exactly like `letf'.
494 The only difference is in details that relate to some deprecated usage
495 of `symbol-function' in place forms.
497 *** `progv' was rewritten to use the `let' machinery.
498 A side effect is that variables without corresponding values are bound
499 to nil rather than being made unbound.
501 *** The following methods of extending `setf' are obsolete
502 (use features from gv.el instead):
503 `define-modify-macro' (use `gv-letplace')
504 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
505 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
506 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
510 *** Changes are now highlighted using the same color scheme as in
511 modern VCSes. Deletions are displayed in red (new faces
512 `diff-refine-removed' and `smerge-refined-removed', and new definition
513 of `diff-removed'), insertions in green (new faces `diff-refine-added'
514 and `smerge-refined-added', and new definition of `diff-added').
516 *** The variable `diff-use-changed-face' defines whether to use the
517 face `diff-changed', or `diff-removed' and `diff-added' to highlight
518 changes in context diffs.
520 *** The new command `diff-delete-trailing-whitespace' removes trailing
521 whitespace introduced by a diff.
523 ** Ediff now uses the same color scheme as Diff mode.
527 A new version of python.el, which provides several new features, including:
528 per-buffer shells, better indentation, Python 3 support, and improved
529 shell-interaction compatible with iPython (and virtually any other
532 *** Some user options have been replaced/renamed, including (old -> new):
533 **** python-indent -> python-indent-offset
534 **** python-guess-indent -> python-indent-guess-indent-offset
535 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
536 **** python-use-skeletons -> python-skeleton-autoinsert
538 *** Some user options have been removed, including:
540 **** `python-indent-string-contents': Strings are never indented.
542 **** `python-honour-comment-indentation':
543 Comments are always considered as indentation markers.
545 **** `python-continuation-offset': Indentation is automatically
546 calculated in a pep8 compliant way depending on the context.
548 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
549 Have no direct mapping as the shell interaction is completely different.
551 **** `python-python-command', `python-jython-command':
552 Replaced by `python-shell-interpreter'.
554 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
555 `python-pdbtrack-minor-mode-string', `python-source-modes':
558 *** Some commands have been replaced (old -> new):
559 **** python-insert-class -> python-skeleton-class
560 **** python-insert-def -> python-skeleton-def
561 **** python-insert-for -> python-skeleton-for
562 **** python-insert-if -> python-skeleton-if
563 **** python-insert-try/except -> python-skeleton-try
564 **** python-insert-try/finally -> python-skeleton-try
565 **** python-insert-while -> python-skeleton-while
566 **** python-find-function -> python-nav-jump-to-defun
567 **** python-next-statement -> python-nav-forward-sentence
568 **** python-previous-statement -> python-nav-backward-sentence
569 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
570 **** python-end-of-defun-function -> python-nav-end-of-defun
571 **** python-send-buffer -> python-shell-send-buffer
572 **** python-send-defun -> python-shell-send-defun
573 **** python-send-region -> python-shell-send-region
574 **** python-send-region-and-go -> emulate with python-shell-send-region
575 and python-shell-switch-to-shell
576 **** python-send-string -> python-shell-send-string
577 **** python-switch-to-python -> python-shell-switch-to-shell
578 **** python-describe-symbol -> python-eldoc-at-point
582 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
584 *** The D-Bus object manager interface is implemented.
586 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
587 if their value does not fit into Emacs's integer range.
589 *** The function `dbus-call-method' is now non-blocking.
590 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
592 *** Signals can also be sent as unicast messages.
594 *** The argument list of `dbus-register-signal' has been extended,
595 according to the new match rule types of D-Bus.
597 *** `dbus-init-bus' supports private connections.
599 *** There is a new function `dbus-setenv'.
601 ** `desktop-path' no longer includes the "." directory.
602 Desktop files are now located in ~/.emacs.d by default.
606 *** `dired-do-async-shell-command' executes each file sequentially
607 if the command ends in `;' (when operating on multiple files).
608 Otherwise, it executes the command on each file in parallel.
610 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
611 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
614 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
615 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
616 mark/unmark/flag all files in the active region.
618 *** The minibuffer default for `=' (`dired-diff) has changed.
619 It is now the backup file for the file at point, if one exists.
620 In Transient Mark mode the default is the file at the active mark.
622 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
623 The global binding for `M-=', `count-words-region' is in effect.
627 *** New module "notifications", which can send a notification when you
628 receive a private message or your nickname is mentioned.
630 *** ERC will look up server/channel names via auth-source and use any
633 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
634 only applies to messages sent by lurkers.
636 ** reStructuredText mode
638 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
639 fontification, comment handling, and customization have all been revised
642 *** Support for `imenu' and `which-function-mode'.
644 *** The reStructuredText syntax is more closely covered.
645 Sphinx support has been improved.
647 *** `rst-insert-list' inserts new list or continues existing lists.
649 *** A negative prefix argument always works for `rst-adjust'.
651 *** The window configuration is reset after displaying a TOC.
653 *** The constant `rst-version' describes the rst.el package version.
657 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
659 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
661 *** `sh-use-smie' lets you choose a new indentation and navigation code.
665 *** The free software compiler GHDL is supported (and now the default).
667 *** Support for the VHDL-AMS packages has been added/updated.
669 *** Updated to the 2002 revision of the VHDL standard.
671 *** Accepts \r and \f as whitespace.
675 *** The faces used by Apropos are now directly customizable.
676 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
677 see the `apropos' Custom group for details.
679 *** The old options whose values specified faces to use have been removed
680 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
684 *** This package has been rewritten to use Tabulated List mode.
686 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
687 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
691 *** You can customize the header text that appears above each calendar month.
692 See the variable `calendar-month-header'.
694 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
696 *** The calendars produced by cal-html include holidays.
697 Customize `cal-html-holidays' to change this.
699 ** Compile has a new option `compilation-always-kill'.
703 *** `custom-reset-button-menu' now defaults to t.
705 *** Non-option variables are never matched in `customize-apropos' and
706 `customize-apropos-options' (i.e., the prefix argument does nothing for
711 *** The variables `term-default-fg-color' and `term-default-bg-color'
712 are now deprecated in favor of the customizable face `term'.
714 *** You can customize how to display ANSI terminal colors and styles
715 by customizing the corresponding `term-color-<COLOR>',
716 `term-color-underline' and `term-color-bold' faces.
720 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
722 *** Remote processes are now also supported on remote MS-Windows hosts.
726 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
727 Previously, this slot stored semicolon-separated attribute-value pairs
728 appended to some imap URLs, but this is not compatible with RFC 3986.
729 So now the `filename' slot stores the entire path and query components,
730 and the `attributes' slot is always nil.
732 *** New function `url-encode-url' for encoding a URI string.
733 The `url-retrieve' function now uses this to encode its URL argument,
734 in case that is not properly encoded.
736 ** notifications.el supports now version 1.2 of the Notifications API.
737 The function `notifications-get-capabilities' returns the supported
740 ** Flymake uses fringe bitmaps to indicate errors and warnings.
741 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
742 `flymake-warning-bitmap'.
744 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
745 specifying URL types that should be converted to remote file names at
746 the FFAP prompt. The default is now '("ftp").
748 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
749 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
751 ** New option `mouse-avoidance-banish-position' specifies where the
752 `banish' mouse avoidance setting moves the mouse.
754 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
755 closing brackets to be aligned with the line of the opening bracket.
757 ** In Proced mode, new command `proced-renice' renices marked processes.
759 ** New option `async-shell-command-buffer' specifies the buffer to use
760 for a new asynchronous `shell-command' when the default output buffer
761 `*Async Shell Command*' is already in use.
763 ** SQL mode has a new option `sql-db2-escape-newlines'.
764 If non-nil, newlines sent to the command interpreter will be escaped
765 by a backslash. The default does not escape the newlines and assumes
766 that the sql statement will be terminated by a semicolon.
768 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
769 (and modes that derive from it), sorts the column at point, or the Nth
770 column if a numeric prefix argument is given.
772 ** `which-func-modes' now defaults to t, so Which Function mode, when
773 enabled, applies to all applicable major modes.
775 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
778 ** Follow mode no longer works by using advice.
779 The option `follow-intercept-processes' has been removed.
781 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
783 ** Hooks renamed to avoid obsolete "-hooks" suffix:
784 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
785 *** semantic-change-hooks -> semantic-change-functions
786 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
787 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
788 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
789 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
790 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
791 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
792 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
793 *** rcirc-activity-hooks -> rcirc-activity-functions
794 *** rcirc-print-hooks -> rcirc-print-functions
795 *** dbus-event-error-hooks -> dbus-event-error-functions
796 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
797 *** checkdoc-style-hooks -> checkdoc-style-functions
798 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
799 *** archive-extract-hooks -> archive-extract-hook
800 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
801 *** hfy-post-html-hooks -> hfy-post-html-hook
802 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
803 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
804 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
805 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
810 In most cases, assoc+member+push+delq work just as well.
811 And in any case it's just a terrible package: ugly semantics, terrible
812 inefficiency, and not namespace-clean.
821 * Incompatible Lisp Changes in Emacs 24.3
823 ** Docstrings starting with `*' no longer indicate user options.
824 Only variables defined using `defcustom' are considered user options.
825 The function `user-variable-p' is now an obsolete alias for
828 ** The return values of `defalias', `defun' and `defmacro' have changed,
829 and are now undefined. For backwards compatibility, `defun' and
830 `defmacro' currently return the name of the newly defined
831 function/macro, but this should not be relied upon.
833 ** `random' by default now returns a different random sequence in
834 every Emacs run. Use `(random S)', where S is a string, to set the
835 random seed to a value based on S, in order to get a repeatable
836 sequence in later calls.
838 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
839 that substring is inserted literally even if the LITERAL arg is
840 non-nil, instead of causing an error to be signaled.
842 ** `select-window' now always makes the window's buffer current.
843 It does so even if the window was selected before.
845 ** The function `x-select-font' can return a font spec, instead of a
846 font name as a string. Whether it returns a font spec or a font name
847 depends on the graphical library.
849 ** `face-spec-set' no longer sets frame-specific attributes when the
850 third argument is a frame (that usage was obsolete since Emacs 22.2).
852 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
854 ** The CL package's `get-setf-method' function no longer exists.
855 Generalized variables are now part of core Emacs Lisp, and implemented
856 differently to the way cl.el used to do it. It is not possible to
857 define a compatible replacement for `get-setf-method'. See the file
858 gv.el for internal details of the new implementation.
860 ** The arguments of `dbus-register-signal' are no longer just strings,
861 but keywords or keyword-string pairs. The old argument list will
862 still be supported for Emacs 24.x.
864 ** Miscellaneous name changes
865 Some Lisp symbols have been renamed to correct their spelling,
866 or to be more consistent with standard Emacs terminology.
868 *** Renamed functions
869 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
870 **** inactivate-input-method -> deactivate-input-method
871 **** quail-inactivate -> quail-deactivate
872 **** robin-inactivate -> robin-deactivate
873 **** viper-inactivate-input-method -> viper-deactivate-input-method
874 **** viper-inactivate-input-method-action ->
875 viper-deactivate-input-method-action
876 **** ucs-input-inactivate -> ucs-input-deactivate
879 The old hooks are still supported for backward compatibility, but they
880 are deprecated and will be removed eventually.
881 **** input-method-inactivate-hook -> input-method-deactivate-hook
882 **** robin-inactivate-hook -> robin-deactivate-hook
883 **** quail-inactivate-hook -> quail-deactivate-hook
885 *** Renamed variables
886 **** follow-deactive-menu -> follow-inactive-menu
887 **** inactivate-current-input-method-function ->
888 deactivate-current-input-method-function
890 ** Some obsolete functions, variables, and faces have been removed:
891 *** `last-input-char', `last-command-char', `unread-command-char'
892 *** `facemenu-unlisted-faces'
893 *** `rmail-decode-mime-charset'
894 *** `iswitchb-read-buffer'
895 *** `sc-version', `sc-submit-bug-report'
896 *** `set-char-table-default'
897 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
898 *** `compile-internal'
900 *** `mode-line-inverse-video'
901 *** `follow-mode-off-hook'
902 *** `cvs-commit-buffer-require-final-newline'
903 (use `log-edit-require-final-newline' instead)
904 *** `cvs-changelog-full-paragraphs'
905 (use `log-edit-changelog-full-paragraphs' instead)
906 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
907 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
908 *** `vc-master-templates' (use `vc-handled-backends' instead)
909 *** `vc-checkout-carefully'
912 * Lisp changes in Emacs 24.3
914 ** CL-style generalized variables are now in core Elisp.
915 `setf' is autoloaded; `push' and `pop' accept generalized variables.
916 You can define your own generalized variables using `gv-define-simple-setter',
917 `gv-define-setter', etc.
919 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
920 This can significantly speed up execution of non-byte-compiled code,
921 but can also bump into previously unnoticed cyclic dependencies.
922 These are generally harmless: they will simply cause the macro calls
923 to be left for later expansion (as before), but will result in a
924 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
925 You may wish to restructure your code so this does not happen.
927 ** New sampling-based Elisp profiler.
928 Try M-x profiler-start, do some work, and then call M-x profiler-report.
929 When finished, use M-x profiler-stop. The sampling rate can be based on
930 CPU time or memory allocations.
932 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
933 The interpretation of the DECLS is determined by `defun-declarations-alist'.
935 ** New macros `setq-local' and `defvar-local'.
937 ** Face underlining can now use a wave.
939 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
940 of `read-regexp' accepts a string ending with a colon and space, and its
941 second argument DEFAULTS can be a list of strings accessible via `M-n'
942 in the minibuffer ahead of other hard-coded useful regexp-related values.
943 More commands use `read-regexp' now to read their regexp arguments.
947 *** New function `completion-table-with-quoting' to handle completion
948 in the presence of quoting, such as file completion in shell buffers.
950 *** New function `completion-table-subvert' to use an existing completion
951 table, but with a different prefix.
955 *** New error type and new function `user-error'.
956 These do not trigger the debugger.
958 *** New option `debugger-bury-or-kill', saying what to do with the
959 debugger buffer when exiting debug.
961 *** Set `debug-on-message' to enter the debugger when a certain
962 message is displayed in the echo area. This can be useful when trying
963 to work out which code is doing something.
965 *** New var `inhibit-debugger', automatically set to prevent accidental
966 recursive invocations.
970 *** New command `fit-frame-to-buffer' adjusts the frame height to
973 *** The command `fit-window-to-buffer' can adjust the frame height
974 if the new option `fit-frame-to-buffer' is non-nil.
976 *** New macro `with-temp-buffer-window', similar to
977 `with-output-to-temp-buffer'.
979 *** `temp-buffer-resize-mode' no longer resizes windows that have been
982 *** New option `switch-to-buffer-preserve-window-point' to restore a
983 window's point when switching buffers.
985 *** New display action alist entries `window-height' and `window-width'
986 specify the size of new windows created by `display-buffer'.
988 *** New display action alist entry `pop-up-frame-parameters', if
989 non-nil, specifies frame parameters to give any newly-created frame.
991 *** New display action alist entry `inhibit-switch-frame', if non-nil,
992 tells display action functions to avoid changing which frame is
995 *** New display action alist entry `previous-window', if non-nil,
996 specifies window to reuse in `display-buffer-in-previous-window'.
998 *** New display action functions `display-buffer-below-selected',
999 and `display-buffer-in-previous-window'.
1001 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1002 now accept a third argument to avoid choosing the selected window.
1004 *** Additional values recognized for option `window-combination-limit'.
1006 *** The following variables are obsolete, as they can be replaced by
1007 appropriate entries in the `display-buffer-alist' function introduced
1009 **** `dired-shrink-to-fit'
1010 **** `display-buffer-reuse-frames'
1011 **** `display-buffer-function'
1012 **** `special-display-buffer-names'
1013 **** `special-display-frame-alist'
1014 **** `special-display-function'
1015 **** `special-display-regexps'
1019 *** `current-time-string' no longer requires that its argument's year
1020 must be in the range 1000..9999. It now works with any year supported
1021 by the underlying C implementation.
1023 *** `current-time' now returns extended-format time stamps
1024 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1025 PSEC is typically a multiple of 1000 on current machines. Other
1026 functions that use this format, such as `file-attributes' and
1027 `format-time-string', have been changed accordingly. Old-format time
1028 stamps are still accepted.
1030 *** The format of timers in `timer-list' and `timer-idle-list' is now
1031 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1032 The PSECS slot is new, and uses picosecond resolution. It can be
1033 accessed via the new `timer--psecs' accessor.
1035 *** Last-modified time stamps in undo lists now are of the form
1036 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1038 ** Floating point functions now always return special values like NaN,
1039 instead of signaling errors, if given invalid args; e.g., (log -1.0).
1040 Previously, they returned NaNs on some platforms but signaled errors
1041 on others. The affected functions are acos, asin, tan, exp, expt,
1042 log, log10, sqrt, and mod.
1044 ** New fringe bitmap `exclamation-mark'.
1046 ** Miscellaneous changes to special forms and macros
1048 *** `defun' and `defmacro' are now macros rather than special forms.
1050 *** `kbd' is now a function rather than a macro.
1052 ** Miscellaneous new functions
1054 *** `set-temporary-overlay-map' sets up a temporary keymap that
1055 takes precedence over most other maps for a short while (normally one key).
1057 *** `autoloadp' tests if its argument is an autoloaded object.
1059 *** `autoload-do-load' performs the autoloading operation.
1061 *** `buffer-narrowed-p' tests if the buffer is narrowed.
1063 *** `file-name-base' returns a file name sans directory and extension.
1065 *** `function-get' fetches a function property, following aliases.
1067 *** `posnp' tests if an object is a `posn'.
1069 *** `system-users' returns the user names on the system.
1071 *** `system-groups' returns the group names on the system.
1073 *** `tty-top-frame' returns the topmost frame of a text terminal.
1075 ** The following functions and variables are obsolete:
1076 *** `automount-dir-prefix' (use `directory-abbrev-alist')
1077 *** `buffer-has-markers-at'
1078 *** `macro-declaration-function' (use `macro-declarations-alist')
1079 *** `window-system-version' (provides no useful information)
1080 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
1081 *** `query-replace-interactive'
1082 *** `font-list-limit' (has had no effect since Emacs < 23)
1085 * Changes in Emacs 24.3 on non-free operating systems
1087 ** Cygwin builds can use the native MS Windows user interface.
1088 Pass `--with-w32' to configure. The default remains the X11 interface.
1090 ** Two new functions are available in Cygwin builds:
1091 `cygwin-convert-file-name-from-windows' and
1092 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
1093 code to access the Cygwin file-name mapping machinery to convert
1094 between Cygwin and Windows-native file and directory names.
1096 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
1097 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
1098 `mouse-autoselect-window'.
1100 ** On MS Windows Vista and later Emacs now supports symbolic links.
1102 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
1103 support for libxml2, even if its presence is detected.
1105 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1107 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
1108 directories to the search path. You must add them yourself if you want them.
1111 * Changes in Emacs 24.2
1113 ** This is mainly a bug-fix release.
1116 * Installation Changes in Emacs 24.1
1118 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1119 to configure. Note that other libraries used by Emacs, RSVG and GConf,
1120 also depend on Gtk+. You can disable them with --without-rsvg and
1123 ** Emacs can be compiled with GnuTLS support.
1124 This happens by default if a suitably recent version of the library is
1125 found at build time. To prevent this, use the configure option
1126 `--without-gnutls'. See below for GnuTLS features.
1128 ** Emacs can be compiled with SELinux support.
1129 This happens by default if a suitably recent version of the library is
1130 found at build time. To prevent this, use the configure option
1131 `--without-selinux'. See below for SELinux features.
1133 ** Emacs can be compiled with ImageMagick support.
1134 This happens by default if a suitably recent version of the library is
1135 found at build time. To prevent this, use the configure option
1136 `--without-imagemagick'. See below for ImageMagick features.
1137 This feature is not available for the Nextstep or MS ports.
1139 ** Emacs can be compiled with libxml2 support.
1140 This happens by default if a suitably recent version of the library is
1141 found at build time. To prevent this, use the configure option
1142 `--without-xml2'. See below for libxml2 features.
1144 ** By default, the installed Info and man pages are compressed.
1145 You can disable this by configuring --without-compress-info.
1147 ** New configure option --with-wide-int.
1148 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
1149 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1152 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
1153 These provide no new functionality, they just remove the need to edit
1154 lib-src/Makefile by hand in order to use the associated features.
1156 ** New configure option --enable-use-lisp-union-type.
1157 This is only useful for Emacs developers to debug certain types of bugs.
1158 This is not a new feature; only the configure flag is new.
1160 ** The standalone programs digest-doc and sorted-doc are removed.
1161 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1163 ** The standalone program `fakemail' is removed.
1164 If you need it, feedmail.el provides a superset of the functionality.
1167 * Startup Changes in Emacs 24.1
1169 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
1170 command line arguments, and the EMACS_UNIBYTE environment variable, no
1171 longer have any effect. (They were declared obsolete in Emacs 23.)
1173 ** New command line option `--no-site-lisp' removes site-lisp directories
1174 from load-path. -Q now implies this. This option does not affect the
1175 EMACSLOADPATH environment variable (and hence has no effect for
1179 * Changes in Emacs 24.1
1183 *** Many packages now use the `completion-at-point' command,
1184 rather than implementing separate completion commands.
1186 *** `completion-at-point' now handles tags and semantic completion.
1188 *** Completion in a non-minibuffer now tries to detect the end of completion
1189 and pops down the *Completions* buffer accordingly.
1191 *** New option `completion-cycle-threshold' allows completion cycling.
1193 *** New option `completion-category-overrides' for overriding the
1194 default completion style in certain circumstances.
1196 *** New completion style `substring'.
1198 *** Completion of buffer names uses `substring' completion by default.
1200 *** The option `widget-complete-field' has been removed.
1204 *** The first time you try sending mail, Emacs asks for a mail method.
1205 This is implemented by a new default for `send-mail-function', which
1206 is `sendmail-query-once'. This offers to use the smtpmail package, or
1207 to use the old defaults relying on external mail facilities
1208 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1209 `mailclient-send-it' on Windows).
1211 *** Typing C-c m in the buffer made by M-x report-emacs-bug transfers
1212 the report to your desktop's preferred mail client, if there is one.
1213 This uses either the "xdg-email" utility, or Mac OS's "open" command.
1215 *** See Changes in Specialized Modes and Packages for SMTPmail changes
1216 and Mail mode changes
1218 ** Emacs server and client changes
1220 *** New option `server-port' specifies the port for TCP Emacs servers.
1222 *** New emacsclient argument -q/--quiet suppresses some status messages.
1224 *** New emacsclient argument --frame-parameters specifies the frame
1225 parameters of any newly-created graphical frame.
1227 *** If emacsclient shuts down due to Emacs signaling an error,
1228 its exit status is 1.
1230 *** New emacsclient argument --parent-id ID.
1231 This opens a client frame in parent X window ID, via XEmbed, similar
1232 to the --parent-id argument to Emacs.
1234 ** Internationalization changes
1236 *** Emacs now supports display and editing of bidirectional text.
1237 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1238 displayed in the correct visual order as expected by users of those
1239 scripts. The display reordering is a "full bidirectionality" class
1240 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1241 with no RTL text should look exactly the same as before.
1243 **** New buffer-local variable `bidi-display-reordering'.
1244 To disable display reordering in a buffer, change this to nil.
1246 **** New buffer-local variable `bidi-paragraph-direction'.
1247 If nil (the default), Emacs determines the base direction of each
1248 paragraph from its text, as specified by the UBA. Setting the value
1249 to `right-to-left' or `left-to-right' forces a base direction on each
1252 Paragraphs with right-to-left base direction are displayed starting at
1253 the right window edge.
1255 *** Enhanced support for characters with no glyphs in available fonts,
1256 or, on text terminals, characters that cannot be encoded by the
1257 terminal coding system. The new option `glyphless-char-display-control'
1258 specifies how to display them: as a hexadecimal code in a box, a thin
1259 1-pixel space, an empty box, etc.
1261 *** New input methods for Farsi and Bulgarian
1262 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
1264 *** `nobreak-char-display' now also highlights Unicode hyphen chars
1265 (U+2010 and U+2011).
1267 *** New Hebrew translation of the Emacs Tutorial.
1268 Type `C-u C-h t' to choose it in case your language setup doesn't
1269 automatically select it.
1271 ** An Emacs Lisp package manager is now included.
1272 This is a convenient way to download and install additional packages,
1273 from a package repository at http://elpa.gnu.org.
1275 *** M-x list-packages shows a list of packages, which can be
1276 selected for installation.
1278 *** New command `describe-package', bound to `C-h P'.
1280 *** By default, all installed packages are loaded automatically when
1281 Emacs starts up. To disable this, set `package-enable-at-startup' to
1282 nil. To specify the packages to load, customize `package-load-list'.
1284 ** Custom theme changes
1286 *** New command `M-x customize-themes', which provides a convenient
1287 interface for enabling and disabling Custom themes.
1289 *** New option `custom-theme-load-path' is the load path for themes.
1290 Emacs no longer looks for Custom themes in `load-path'. The default
1291 value of `custom-theme-load-path' says to look for themes in
1292 `custom-theme-directory', followed by a subdirectory of
1293 `data-directory' named "themes/", which contains a small selection of
1294 built-in Custom themes.
1296 *** New option `custom-safe-themes' records known-safe theme files.
1297 If a theme is not in this list, Emacs queries before loading it, and
1298 offers to save the theme to `custom-safe-themes' automatically. By
1299 default, all themes included in Emacs are treated as safe.
1301 ** Improved GTK integration
1303 *** GTK scroll-bars are now placed on the right by default.
1304 The function `set-scroll-bar-mode' can change this.
1306 *** GTK tool bars can have just text, just images or images and text.
1307 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1308 the default is taken from desktop settings.
1310 *** GTK tool bars can be placed on any edge of the frame.
1311 The frame-parameter tool-bar-position controls this. It takes the
1312 values top, left, right or bottom. The Options => Show/Hide menu has
1315 *** The default colors for selected text (the `region' face) are taken
1316 from the GTK theme when Emacs is built with GTK.
1318 *** Emacs uses GTK tooltips by default if built with GTK.
1319 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
1321 ** Graphical interface changes
1323 *** On graphical displays, the mode-line no longer ends in dashes.
1324 Also, the first dash (which does not indicate anything) is just
1325 displayed as a space.
1327 *** `menu-bar-select-buffer-function' lets you choose another operation
1328 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1330 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
1331 built with Xft. These fonts can be set via X resources, for example:
1332 Emacs.pane.menubar.font: Courier-12
1336 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
1337 or if it receives a SIGINT signal in batch mode.
1339 *** `kill-emacs-hook' is now also run in batch mode.
1340 Third-party code which adds to `kill-emacs-hook' should check if they
1341 do the right thing in batch mode.
1343 ** Scrolling changes
1345 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
1346 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
1347 of buffer at first key-press (instead they move to top/bottom of buffer)
1348 when `scroll-error-top-bottom' is non-nil.
1350 *** New option `scroll-error-top-bottom' (see above).
1352 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
1353 scroll a line instead of full screen.
1355 *** New property `scroll-command' should be set on a command's symbol to
1356 define it as a scroll command affected by `scroll-preserve-screen-position'.
1358 *** If you customize `scroll-conservatively' to a value greater than 100,
1359 Emacs will never recenter point in the window when it scrolls due to
1360 cursor motion commands or commands that move point (e.f., `M-g M-g').
1361 Previously, you needed to use `most-positive-fixnum' as the value of
1362 `scroll-conservatively' to achieve the same effect.
1364 *** "Aggressive" scrolling now honors the scroll margins.
1365 If you customize `scroll-up-aggressively' or
1366 `scroll-down-aggressively' and move point off the window, Emacs now
1367 scrolls the window so as to avoid positioning point inside the scroll
1370 ** Basic SELinux support has been added.
1371 This requires Emacs to be linked with libselinux at build time.
1373 *** Emacs preserves the SELinux file context when backing up.
1374 Also, the function `copy-file' has an extra optional argument for
1375 preserving SELinux context, and the return value of `backup-buffer'
1376 now includes the SELinux context.
1378 *** New functions `file-selinux-context' and `set-file-selinux-context'
1379 get and set the SELinux context of a file.
1383 *** `delete-by-moving-to-trash' now only affects commands that specify
1384 trashing. This avoids inadvertently trashing temporary files.
1386 *** Calling `delete-file' or `delete-directory' with a prefix argument
1387 now forces true deletion, regardless of `delete-by-moving-to-trash'.
1389 ** File- and directory-local variable changes
1391 *** You can stop directory local vars from applying to subdirectories.
1392 Add an element (subdirs . nil) to the alist portion of any variables
1393 settings to indicate that the section should not apply to
1396 *** Directory local variables can apply to some file-less buffers.
1397 Affected modes include dired, vc-dir, and log-edit. For example,
1398 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
1399 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
1400 `hack-dir-local-variables-non-file-buffer' to support this.
1402 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
1403 Instead, use "eval: (minor-mode 1)".
1405 *** The variable `inhibit-first-line-modes-regexps' has been renamed
1406 to `inhibit-local-variables-regexps'. As the name suggests, it now
1407 applies to ALL file local variables, not just -*- lines. The
1408 associated `inhibit-first-line-modes-suffixes' has been renamed in the
1413 *** The `quit-window' command now restores the last buffer displayed
1414 in the quitted window.
1416 *** Resizing an Emacs frame now preserves proportional window sizes,
1417 modulo restrictions like window minimum sizes and fixed-size windows.
1419 *** The behavior of `display-buffer' is now customizable in detail.
1421 **** New option `display-buffer-base-action' specifies a list of
1422 user-determined display "actions" (functions and optional arguments
1423 for choosing the displaying window).
1425 This takes precedence over the default display action, which is
1426 specified by `display-buffer-fallback-action'.
1428 **** New option `display-buffer-alist' maps buffer name regexps to
1429 display actions, taking precedence over `display-buffer-base-action'.
1431 *** New option `window-combination-limit'.
1432 The new option `window-combination-limit' allows to return the space
1433 obtained for resizing or creating a window more reliably to the window
1434 from which such space was obtained.
1436 *** New option `window-combination-resize'.
1437 The new option `window-combination-resize' allows to split a window that
1438 otherwise cannot be split because it's too small by stealing space from
1439 other windows in the same combination. Subsequent resizing or deletion
1440 of the window will resize all windows in the same combination as well.
1442 *** New option `frame-auto-hide-function' lets you choose between
1443 iconifying or deleting a frame when burying a buffer in a dedicated
1444 frame, or quitting a window showing a buffer in a frame of its own.
1446 *** New commands `maximize-window' and `minimize-window'.
1447 These maximize and minimize the size of a window within its frame.
1449 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
1450 These functions allow to navigate through the live buffers that have
1451 been shown in a specific window.
1453 ** Minibuffer changes
1455 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
1456 This is handy for minibuffer-only frames, and is also used for the feature
1457 where mouse-1 pops up *Messages*"', which can now easily be changed.
1459 *** Minibuffers set `truncate-lines' to nil.
1460 If you want to change the value to something else, you could use
1461 for example `minibuffer-setup-hook'.
1463 ** `auto-mode-case-fold' is now enabled by default.
1465 ** `backup-by-copying-when-mismatch' now defaults to t.
1467 ** New basic faces `error', `warning', `success'.
1468 These are used to highlight text indicating failure, caution or
1469 successful operation.
1471 ** New option `list-colors-sort' defines the color sort order
1472 for `list-colors-display'.
1474 ** The variable `focus-follows-mouse' now always defaults to nil.
1477 * Editing Changes in Emacs 24.1
1481 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
1482 `isearch-yank-line'.
1484 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
1485 `isearch-yank-kill'.
1487 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
1489 ** New commands `count-words-region' and `count-words'.
1491 *** M-= is bound to `count-words-region', not `count-lines-region'.
1492 The `count-words-region' command, when called interactively, reports
1493 the number of lines, words, and characters in the region. It is a
1494 superset of the old `count-lines-region', which is now an obsolete
1497 ** The command `just-one-space' (M-SPC), if given a negative argument,
1498 also deletes newlines around point.
1502 *** New option `delete-active-region'.
1503 If non-nil, [delete] and DEL delete the region if it is active and no
1504 prefix argument is given. If set to `kill', those commands kill
1507 *** New command `delete-forward-char', bound to [delete].
1508 This is meant for interactive use, and obeys `delete-active-region'.
1509 The command `delete-char' does not obey `delete-active-region'.
1511 *** `delete-backward-char' is now a Lisp function.
1512 Apart from obeying `delete-active-region', its behavior is unchanged.
1513 However, the byte compiler now warns if it is called from Lisp; Lisp
1514 callers should use delete-char with a negative argument instead.
1516 *** The option `mouse-region-delete-keys' has been deleted.
1518 ** Selection changes.
1520 The default handling of clipboard and primary selections has been
1521 changed to conform with modern X applications. In short, most
1522 commands for killing and yanking text now use the clipboard, while
1523 mouse commands use the primary selection.
1525 In the following, we provide a list of these changes, followed by a
1526 list of steps to get the old behavior back if you prefer that.
1528 *** `select-active-regions' now defaults to t.
1529 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
1530 the kill ring. The selected text is put in the primary selection, if
1531 the system possesses a separate primary selection facility (e.g. X).
1533 **** `select-active-regions' also accepts a new value, `only'.
1534 This means to only set the primary selection for temporarily active
1535 regions (usually made by mouse-dragging or shift-selection);
1536 "ordinary" active regions, such as those made with C-SPC followed by
1537 point motion, do not alter the primary selection.
1539 **** `mouse-drag-copy-region' now defaults to nil.
1541 *** mouse-2 is now bound to `mouse-yank-primary'.
1542 This pastes from the primary selection, ignoring the kill-ring.
1543 Previously, mouse-2 was bound to `mouse-yank-at-click'.
1545 *** `x-select-enable-clipboard' now defaults to t on all platforms.
1547 *** `x-select-enable-primary' now defaults to nil.
1548 Thus, commands that kill text or copy it to the kill-ring (such as
1549 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
1551 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
1552 exactly equivalent to M-w, C-w, and C-y respectively.
1554 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
1555 non-nil by default, as Windows does not support the primary selection
1556 between applications.
1558 *** To return to the previous behavior, do the following:
1560 **** Change `select-active-regions' to nil.
1561 **** Change `mouse-drag-copy-region' to t.
1562 **** Change `x-select-enable-primary' to t (on X only).
1563 **** Change `x-select-enable-clipboard' to nil.
1564 **** Bind `mouse-yank-at-click' to mouse-2.
1566 *** Support for X cut buffers has been removed.
1568 *** X clipboard managers are now supported.
1569 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
1571 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
1572 in the current rectangle. With a prefix argument, this prompts for a
1573 number to count from and for a format string.
1575 ** `redisplay-dont-pause' now defaults to t.
1576 This makes Emacs feel more responsive to editing commands that arrive
1577 at high rate, e.g. if you lean on some key, because stopping redisplay
1578 in the middle (when this variable is nil) forces more expensive
1579 updates later on, and Emacs appears to be unable to keep up.
1581 ** The behavior of <TAB> for active regions in Text mode has changed.
1582 In Text and related modes, typing <TAB> (`indent-for-tab-command')
1583 when the region is active causes Emacs to indent all the lines in the
1584 region, aligning them with the line previous to the first line in the
1585 region (or with the left margin if there is no previous line).
1587 ** When `occur' is called with a prefix argument, matching strings are
1588 collected into the `*Occur*' buffer without line numbers. If there
1589 are parenthesized subexpressions in the specified regexp, `occur'
1590 reads replacement text that may contain \\& and \\N whose convention
1591 follows `replace-match'.
1594 * Changes in Specialized Modes and Packages in Emacs 24.1
1596 ** Archive Mode has basic support for browsing and updating 7z archives.
1600 *** BibTeX mode now supports biblatex.
1601 Use the variable `bibtex-dialect' to select different BibTeX dialects.
1602 `bibtex-entry-field-alist' is now an obsolete alias for
1603 `bibtex-BibTeX-entry-alist'.
1605 *** New command `bibtex-search-entries', bound to C-c C-a.
1607 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
1609 *** New variable `bibtex-search-entry-globally'.
1613 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
1615 *** The default browser used by the package is now the "xdg-open" program,
1616 on platforms that support it. This calls your desktop's preferred browser.
1618 ** Calendar, Diary, and Appt
1620 *** Diary entries can contain non-printing "comments".
1621 See the variable `diary-comment-start'.
1623 *** Appointments can specify their individual warning times.
1624 See the variable `appt-warning-time-regexp'.
1626 *** The function specified by `appt-disp-window-function' may be passed
1627 lists of arguments if multiple appointments are due at similar times.
1628 If you are using a custom function for this, you should update it.
1630 *** New function `diary-hebrew-birthday'.
1632 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
1633 may no longer be nil, but must all be strings.
1635 *** The obsolete (since Emacs 22.1) method of enabling the appt
1636 package by adding `appt-make-list' to `diary-hook' has been removed.
1637 Use `appt-activate' instead.
1639 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
1640 appt-issue-message (use the function appt-activate)
1641 appt-visible/appt-msg-window (use the variable appt-display-format)
1643 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
1644 view-diary-entries, list-diary-entries, show-all-diary-entries
1648 *** New feature to "guess" the style in an existing buffer.
1649 The main entry point is M-x c-guess.
1651 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
1653 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
1654 Thus C-M-a will, by default, go to the beginning of the immediate function,
1657 *** "Macros with semicolons" can be registered for correct indentation.
1658 Where such a macro ends a line (no semicolon) the next statement is no longer
1659 parsed as a statement continuation.
1661 ** Comint and modes derived from it use the standard completion code.
1665 *** Compilation mode can be used without Font Lock mode.
1666 `compilation-parse-errors-function' is now obsolete.
1668 *** New variable `compilation-filter-start', which is bound while
1669 `compilation-filter-hook' runs. It records the start position of the
1670 text inserted by `compilation-filter'.
1672 *** `compilation-error-screen-columns' and `compilation-first-column'
1673 are obeyed in the editing buffer. So programming language modes can
1674 set them, whereas previously only the value in the *Compilation*
1679 *** Customize buffers now contain a search field.
1680 The search is performed using `customize-apropos'.
1681 To turn off the search field, set `custom-search-field' to nil.
1683 *** Options in customize group buffers start out hidden if not customized.
1684 Use the arrow to the left of the option name to toggle visibility.
1686 *** custom-buffer-sort-alphabetically now defaults to t.
1688 *** The color widget now has a "Choose" button, which allows you to
1689 choose a color via `list-colors-display'.
1693 *** It is now possible to access buses other than the default system
1696 *** The `dbus-register-method' and `dbus-register-property' functions
1697 optionally do not register names.
1699 *** The new function `dbus-register-service' registers a known service
1700 name on a D-Bus without also registering a property or a method.
1704 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
1705 if called with a prefix argument, read a file name from the minibuffer
1706 instead of using the current buffer.
1708 *** The "dired local variables" feature of Dired-x is obsolete.
1709 The standard directory local variables feature replaces it.
1713 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
1714 controlling attempts to autojoin a channel.
1716 *** New variable `erc-coding-system-precedence': If we use `undecided'
1717 as the server coding system, this variable will then be consulted.
1718 The default is to decode strings that can be decoded as utf-8 as
1719 utf-8, and do the normal `undecided' decoding for the rest.
1723 *** The default value of `eshell-directory-name' has changed
1724 to be an "eshell" directory in `user-emacs-directory'.
1725 The old "~/.eshell/" directory is still used if it exists, though.
1729 *** The M-x gdb command now uses the GDB Machine Interface protocol.
1730 It now supports multithread non-stop debugging and simultaneous
1731 debugging of several threads.
1735 *** RET (`image-toggle-animation') toggles animation, if applicable.
1736 Animation plays once, unless the option `image-animate-loop' is non-nil.
1740 *** New command M-x info-display-manual displays a named Info manual.
1741 If that manual is already visited in some Info buffer, it displays
1742 that buffer. (This is handy if you have many manuals in many *info*
1743 buffers, and don't remember the name of the buffer visiting the manual
1744 you want to consult.) Otherwise, it loads and displays the manual.
1746 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
1747 This is for compatibility with the stand-alone Info reader program,
1748 and also because `Info-edit' is a rarely used command that is disabled
1751 ** Mail mode changes (not Message mode)
1753 *** New command M-x mail-add-attachment for adding MIME attachments
1755 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
1756 (Its name is misleading, since it has nothing to do with MIME
1757 attachments.) The old name is now an obsolete alias to the new name.
1759 ** MH-E has been updated to MH-E version 8.3.1.
1760 See MH-E-NEWS for details.
1762 ** Modula-2 mode provides auto-indentation.
1764 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
1766 ** nXML mode no longer binds C-RET to `nxml-complete'.
1767 Completion is now performed via `completion-at-point', bound to C-M-i
1768 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
1769 default), this performs tag completion.
1771 ** Org mode has been updated to version 7.8.09.
1772 See ORG-NEWS for details.
1774 ** Prolog mode has been completely revamped, with lots of additional
1775 functionality such as more intelligent indentation, electricity,
1776 support for more variants, including Mercury, and a lot more.
1780 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
1781 in the Rmail incoming message.
1783 *** The variable `rmail-message-filter' no longer has any effect.
1784 This change was made in Emacs 23.1 but was not advertised at the time.
1785 Try using `rmail-show-message-hook' instead.
1789 *** M-x shell prompts for the shell path name if the default directory
1790 is a remote file name and neither the environment variable $ESHELL nor
1791 the variable `explicit-shell-file-name' is set.
1793 *** TAB is now bound to the standard `completion-at-point' command,
1794 which now implements the pcomplete rules for shell command completion.
1798 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
1799 if the mail server supports them. This uses either built-in GnuTLS
1800 support, or the starttls.el library. Customize `smtpmail-stream-type'
1803 *** The variable `smtpmail-auth-credentials' has been removed.
1804 By default, the information is now stored in the file ~/.authinfo.
1805 This was the default value of smtpmail-auth-credentials. If you had
1806 customized smtpmail-auth-credentials to a list of user names and
1807 passwords, those settings are not used. During your first connection
1808 to the smtp server, Emacs will prompt for the user name and password,
1809 and offer to save them to ~/.authinfo. Or you can manually copy the
1810 credentials to ~/.authinfo. For example, if you had
1812 (setq smtpmail-auth-credentials
1813 '(("mail.example.org" 25 "jim" "s!cret")))
1815 then the equivalent line in ~/.authinfo would be
1817 machine mail.example.org port 25 login jim password s!cret
1819 See the auth-source manual for more information, e.g. on encrypting
1820 the credentials file.
1822 *** The variable `smtpmail-starttls-credentials' has been removed.
1823 If you had that set, you need to put
1825 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
1827 in your ~/.authinfo file instead.
1829 *** SMTPmail defaults to using the address in the From: header as the
1830 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
1831 to the address you wish to use instead.
1835 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
1836 and `sql-oracle-scan-on'.
1838 *** New options controlling prompting for login parameters.
1839 Each supported product has a custom variable `sql-*-login-params',
1840 which is a list of the parameters to be prompted for before a
1841 connection is established.
1843 *** The command `sql-product-interactive' now takes a prefix argument,
1844 which causes it to prompt for an SQL product.
1846 *** Product-specific SQL interactive commands now take prefix arguments.
1847 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
1848 given a prefix argument, prompt for a name for the SQL interactive
1849 buffer. This reduces the need for calling `sql-rename-buffer'.
1851 *** SQL interactive modes suppress command continuation prompts, and
1852 replace tabs with spaces. The first change impacts multiple line SQL
1853 statements entered with C-j between each line, statements yanked into
1854 the buffer and statements sent with `sql-send-*' functions. The
1855 second prevents the MySQL and Postgres interpreters from listing
1856 object name completions when sent text via `sql-send-*' functions.
1858 *** New command `sql-connect' starts a predefined SQLi session,
1859 using the login parameters from `sql-connection-alist'.
1861 *** New "Save Connection" menu item in SQLi buffers.
1862 This gathers the login params specified for the SQLi session, if it
1863 was not started by a connection, and saves them as a new connection.
1865 *** New commands for listing database objects and details:
1866 sql-list-all and sql-list-table.
1868 *** An API for manipulating SQL product definitions has been added.
1872 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
1876 *** New inline access method "ksu" (kerberized su).
1878 *** The following access methods are discontinued: "ssh1_old",
1879 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
1881 *** The user option `remote-file-name-inhibit-cache' controls whether
1882 remote file attributes are cached for better performance.
1884 *** The option `ange-ftp-binary-file-name-regexp' has changed its
1885 default value to "".
1887 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
1888 for remote machines which support SELinux.
1890 ** New function `url-queue-retrieve', which behaves like url-retrieve,
1891 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
1892 the degree of parallelism.
1894 ** VC and related modes
1896 *** Support for pulling on distributed version control systems.
1897 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
1898 supported (currently with Bzr, Git, and Mercurial), to update the
1899 current branch and working tree. A prefix argument means to prompt
1900 the user for specifics, e.g. a pull location.
1902 *** `vc-update' is now an alias for `vc-pull'.
1904 *** Support for merging on distributed version control systems.
1905 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
1906 is supported (currently with Bzr, Git, and Mercurial), to merge
1907 changes from another branch into the current one. It prompts for
1908 specifics, e.g. a merge source.
1910 *** New option `vc-revert-show-diff' controls whether `vc-revert'
1911 shows a diff while querying the user. It defaults to t.
1913 *** Log entries in some Log View buffers can be toggled to display a
1914 longer description by typing RET (log-view-toggle-entry-display).
1915 This is currently supported for Bzr, Git, and Mercurial (to support
1916 another backend, define a `log-view-expanded-log-entry-function').
1917 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
1918 use this to display the full log entry for the revision at point.
1920 *** New command `vc-ediff' allows visual comparison of two revisions
1921 of a file similar to `vc-diff', but using ediff backend.
1923 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
1924 this was not advertised at the time.
1926 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
1927 Since Emacs 23, it has done the same thing as `toggle-read-only', but
1928 this was not advertised at the time.
1934 *** erc-hecomplete.el (use erc-pcomplete.el instead)
1936 *** partial-completion-mode (complete.el) is obsolete.
1937 You can get a comparable behavior with:
1938 (setq completion-styles '(partial-completion initials))
1939 (setq completion-pcm-complete-word-inserts-delimiters t)
1941 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
1943 *** pgg is obsolete (use EasyPG instead).
1945 *** sregex.el is obsolete, since rx.el is a strict superset.
1947 *** s-region.el and pc-select.el are obsolete.
1948 They are superseded by shift-select-mode, enabled by default since 23.1.
1950 *** vc-mcvs.el is obsolete (for lack of a maintainer).
1954 *** The Landmark game is now invoked with `landmark', not `lm'.
1955 Its functions and variables have been similarly renamed.
1957 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
1958 (This interfered with cua-mode.)
1960 *** f90.el has some support for Fortran 2008 syntax.
1962 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
1964 *** New command `nato-region' converts text to NATO phonetic alphabet.
1967 * New Modes and Packages in Emacs 24.1
1969 ** Occur Edit mode applies edits made in *Occur* buffers to the
1970 original buffers. It is bound to "e" in Occur mode.
1972 ** New global minor mode electric-pair-mode.
1973 When enabled, typing an open parenthesis automatically inserts the
1974 matching closing one.
1976 ** New global minor mode electric-indent-mode.
1977 When enabled, typing certain characters triggers reindentation.
1978 Major modes wishing to use this can set electric-indent-chars or
1979 electric-indent-functions.
1981 ** New global minor mode electric-layout-mode.
1982 When enabled, typing certain characters automatically inserts newlines.
1983 Major modes wishing to use this can set electric-layout-rules.
1985 ** tabulated-list.el provides a generic major mode for tabulated data,
1986 from which other modes can be derived.
1988 ** pcase.el provides the ML-style pattern matching macro `pcase'.
1990 ** secrets.el is an implementation of the Secret Service API, an
1991 interface to password managers like GNOME Keyring or KDE Wallet. The
1992 Secret Service API requires D-Bus for communication. The command
1993 `secrets-show-secrets' offers a buffer with a visualization of the
1996 ** notifications.el provides an implementation of the Desktop
1997 Notifications API. It requires D-Bus for communication.
1999 ** soap-client.el supports access to SOAP web services from Emacs.
2000 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2002 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
2004 ** New emacs-lock.el package.
2005 The previous version has been moved to obsolete/old-emacs-lock.el.
2006 Now, there is a proper minor mode `emacs-lock-mode'. Protection
2007 against exiting Emacs and killing the buffer can be set separately.
2008 The mechanism for automatically turning off protection for buffers
2009 with dead inferior processes has been generalized.
2012 * Incompatible Lisp Changes in Emacs 24.1
2014 ** Passing a nil argument to a minor mode function call now ENABLES
2015 the minor mode unconditionally. This is so that you can write e.g.
2017 (add-hook 'text-mode-hook 'foo-mode)
2019 to enable foo-mode in Text mode buffers, removing the need for
2020 `turn-on-foo-mode' style functions. This affects all mode commands
2021 defined by `define-minor-mode'. If called interactively, the mode
2022 command still toggles the minor mode.
2024 ** The return value of `backup-buffer' has changed.
2025 It is now a list of three elements, where the second element is a list
2026 describing the original file's SELinux context. If Emacs or the
2027 system lacks SELinux support, the context list is (nil nil nil nil).
2028 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
2030 ** `char-direction-table' and the `char-direction' function were deleted.
2031 They were buggy and inferior to the new support of bidirectional
2032 editing introduced in Emacs 24. If you need the bidirectional
2033 properties of a character, use `get-char-code-property' with the last
2034 argument `bidi-class'.
2036 ** `copy-directory' now copies the source directory as a subdirectory
2037 of the target directory, if the latter is an existing directory. The
2038 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2039 the contents directly into a pre-existing target directory.
2041 ** For mouse click input events in the text area, the Y pixel
2042 coordinate in the POSITION list now counts from the top of the text
2043 area, excluding any header line. Previously, it counted from the top
2046 ** Support for "old-style" backquotes, obsolete for 10+ years, has
2047 been further reduced. Now a backquote not followed by a space is
2048 always treated as a "new-style" backquote. Please remove all
2049 "old-style" backquotes from your code. If your code uses backquotes
2050 as documented in the Elisp manual, and compiles without warning, then
2051 you have nothing to do in this regard. Code not following the
2052 appropriate conventions may fail to compile.
2054 The most common cause of trouble seems to be an old-style backquote
2055 followed by a newline. Another cause of trouble is vector notation
2056 for key sequence notation: instead of [(control ,)] and [(control ')],
2057 you should write [(control ?,)] and [(control ?')], which will work in
2060 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2061 was not advertised at the time. The function `custom-initialize-delay'
2062 replaced all known uses.
2064 ** `view-buffer' now treats special mode-class in the same way that
2065 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2066 major mode is special).
2068 ** Menu and tool bar changes
2070 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
2071 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2072 With these alist entries omitted, `make-frame' checks the value of the
2073 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2074 a menu-bar or tool-bar, respectively. If the alist entries are added,
2075 they override the value of `menu-bar-mode'/`tool-bar-mode'.
2077 *** The menu bar bindings's caches are not used any more.
2078 Use (where-is-internal <def> nil t) instead.
2080 ** Regions created by mouse dragging are now normal active regions,
2081 similar to those created by shift-selection (see Selection changes
2082 above). In previous Emacs versions, these regions were delineated by
2083 `mouse-drag-overlay'; that variable has been removed.
2085 ** The fourth argument of `filter-buffer-substring' has been removed.
2086 If you want to remove text properties from the final result, simply
2087 pass the result through substring-no-properties.
2089 ** cl.el no longer provides `cl-19'.
2091 ** The following obsolete functions and aliases have been removed
2092 (the appropriate new function is given in parentheses; "not needed"
2093 means you can just remove all calls to the function in question):
2095 *** `comint-kill-output' (`comint-delete-output')
2096 *** `decompose-composite-char' (`char-to-string')
2097 *** `outline-visible' (`outline-invisible-p')
2098 *** `internal-find-face' (`facep')
2099 *** `internal-get-face' (`facep and check-face')
2100 *** `frame-update-faces' (not needed)
2101 *** `frame-update-face-colors' (`frame-set-background-mode')
2102 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2103 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
2104 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2105 *** `x-make-font-bold-italic' (`make-face-bold-italic')
2106 *** `x-make-font-unbold' (`make-face-unbold')
2107 *** `x-make-font-unitalic' (`make-face-unitalic')
2108 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2109 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2110 *** `iswitchb-default-keybindings' (`iswitchb-mode')
2111 *** `char-bytes' (== 1)
2112 *** `isearch-return-char' (`isearch-printing-char')
2113 *** `make-local-hook' (not needed)
2114 *** `set-screen-height' (`set-frame-height')
2115 *** `set-screen-width' (`set-frame-width')
2117 ** The following obsolete variables and varaliases have been removed
2118 (the appropriate new variable is given in parentheses):
2120 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2121 *** `vc-header-alist' (`vc-BACKEND-header')
2122 *** `directory-sep-char' (== ?/)
2123 *** `font-lock-defaults-alist' (`font-lock-defaults')
2124 *** `e' (`float-e').
2126 ** The following obsolete files were removed:
2127 sc.el, x-menu.el, rnews.el, rnewspost.el
2129 ** The format of the finder-inf.el file has changed, since the Finder
2130 mechanism is now based on the package system. The variable
2131 `finder-package-info' is replaced by `package--builtins' and
2132 `finder-keywords-hash'.
2134 ** When generating autoloads, `update-directory-autoloads' no longer
2135 assumes every inspected file is in your `load-path'. It instead
2136 generates relative names according to the current `load-path'.
2139 * Lisp changes in Emacs 24.1
2141 ** Code can now use lexical scoping by default instead of dynamic scoping.
2142 The `lexical-binding' variable enables lexical scoping for local
2143 variables. It is typically set via a file-local variable in the first
2144 line of the file, in which case it applies to all the code in that
2147 *** `eval' takes a new optional argument `lexical' to choose the new lexical
2148 binding instead of the old dynamic binding mode.
2150 *** Lexically scoped interpreted functions are represented with a new form
2151 of function value which looks like (closure ENV ARGS &rest BODY).
2153 *** New macro `letrec' to define recursive local functions.
2155 *** `defvar' and `defconst' now mark the variable as special (dynamic).
2156 So do `defcustom' and other forms that call `defvar' as a subroutine.
2158 *** New function `special-variable-p' to check whether a variable is
2159 declared as dynamically bound.
2161 *** The form ((lambda ...) ...) is deprecated.
2163 ** An Emacs Lisp testing tool is now included.
2164 Emacs Lisp developers can use this tool to write automated tests for
2165 their code. See the ERT info manual for details.
2167 ** Changes for bidirectional display and editing
2169 *** New function `current-bidi-paragraph-direction'.
2170 This returns the base direction of the paragraph at point.
2172 *** New function `bidi-string-mark-left-to-right'.
2173 Given a string containing characters from right-to-left scripts, this
2174 function returns another string which can be safely inserted into a
2175 buffer, such that any following text will be always displayed to the
2176 right of that string. (This works by appending an invisible Unicode
2177 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
2179 This is useful when the buffer has overall left-to-right paragraph
2180 direction and you need to insert a string whose contents are not known
2181 in advance, without disrupting the layout of the line.
2185 *** Window tree functions are accessible in Elisp.
2186 Functions are provided to return the parent, siblings or child windows
2187 of any window including internal windows (windows not associated with a
2188 buffer) in the window tree.
2190 **** New function `window-valid-p' gives non-nil for live and internal
2193 **** Window manipulation can deal with internal windows.
2194 Many window handling functions like `split-window', `delete-window', or
2195 `delete-other-windows' as well as the window resizing functions can now
2196 act on any window including internal ones.
2198 *** window-total-height/-width vs window-body-height/-width.
2199 The function `window-height' has been renamed to `window-total-height'
2200 and `window-width' has been renamed to `window-body-width'. The old
2201 names are provided as aliases. Two new functions `window-total-width'
2202 and `window-body-height' are provided.
2204 *** Window parameters specific to window handling functions.
2205 For each window you can specify a parameter to override the default
2206 behavior of a number of functions like `split-window', `delete-window'
2207 and `delete-other-windows'. The variable `ignore-window-parameters'
2208 allows to ignore processing such parameters.
2210 *** New semantics of third argument of `split-window'.
2211 The third argument of `split-window' has been renamed to SIDE and can be
2212 set to any of the values 'below, 'right, 'above, or 'left to make the
2213 new window appear on the corresponding side of the window that shall be
2214 split. Any other value of SIDE will cause `split-window' to split the
2215 window into two side-by-side windows as before.
2217 *** Window resizing functions.
2218 A new standard function for resizing windows called `window-resize' has
2219 been introduced. This and all other functions for resizing windows no
2220 longer delete any windows when they become too small.
2222 *** Deleting the selected window now selects the most recently selected
2223 live window on that frame instead.
2225 *** `adjust-window-trailing-edge' adjustments.
2226 `adjust-window-trailing-edge' can now deal with fixed-size windows and
2227 is able to resize other windows if a window adjacent to the trailing
2228 edge cannot be shrunk any more. This makes its behavior more similar to
2229 that of Emacs 21 without compromising, however, its inability to delete
2230 windows which was introduced in Emacs 22.
2232 *** Window-local buffer lists.
2233 Windows now have local buffer lists. This means that removing a buffer
2234 from display in a window will preferably show the buffer previously
2235 shown in that window with its previous window-start and window-point
2236 positions. This also means that the same buffer may be automatically
2237 shown twice even if it already appears in another window.
2239 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2240 which if non-nil requires the buffer to be displayed in the currently
2241 selected window, signaling an error otherwise. If nil, another window
2242 can be used, e.g. if the selected one is strongly dedicated.
2244 *** `split-window-vertically' and `split-window-horizontally' renamed
2245 to `split-window-below' and `split-window-right' respectively.
2246 The old names are kept as aliases.
2250 **** The second arg to `display-buffer' and `pop-to-buffer' is now
2251 named ACTION, and takes a display action of the same form as
2252 `display-buffer-base-action' (see Changes, above). A non-nil,
2253 non-list value is treated specially, as the old meaning.
2255 **** New variable `display-buffer-overriding-action'.
2257 **** The procedure of `display-buffer' etc. to choose a window is
2258 determined by combining `display-buffer-overriding-action',
2259 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2260 and `display-buffer-fallback-action'. The second and fourth of these
2261 are user-customizable variables.
2263 See the docstring of `display-buffer' for details.
2265 *** New functions `window-state-get' and `window-state-put'.
2266 These functions allow to save and restore the state of an arbitrary
2267 frame or window as an Elisp object.
2271 *** New variable `completion-extra-properties' used to specify extra
2272 properties of the current completion:
2273 - :annotate-function, same as the old completion-annotate-function.
2274 - :exit-function, function to call after completion took place.
2276 *** Functions on `completion-at-point-functions' can return any of the
2277 properties valid for `completion-extra-properties'.
2279 *** `completion-annotate-function' is obsolete.
2281 *** New `metadata' method for completion tables. The metadata thus returned
2282 can specify various details of the data returned by `all-completions':
2283 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2284 used to select a style in completion-category-overrides.
2285 - `annotation-function' to add annotations in *Completions*.
2286 - `display-sort-function' to specify how to sort entries in *Completions*.
2287 - `cycle-sort-function' to specify how to sort entries when cycling.
2289 *** `minibuffer-local-filename-must-match-map' is not used any more.
2290 Instead, the bindings in `minibuffer-local-filename-completion-map'
2291 are combined with `minibuffer-local-must-match-map'.
2293 *** New variable `completing-read-function' allows overriding the
2294 behavior of `completing-read'.
2296 ** `glyphless-char-display' can now distinguish between graphical and
2297 text terminal display, via a char-table entry that is a cons cell.
2299 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
2300 Instead, the offending function is removed.
2304 *** New function `run-hook-wrapped' for running an abnormal hook by
2305 passing the hook functions as arguments to a "wrapping" function.
2306 Like `run-hook-with-args-until-success', it stops at the first
2307 non-nil return value.
2309 *** New macro `with-wrapper-hook' for running an abnormal hook as a
2310 set of "wrapping" filters, similar to around advice.
2311 (A version of this macro was actually added in Emacs 23.2 but was not
2312 advertised at the time.)
2316 *** New macro `condition-case-unless-debug' (this was actually added in
2317 Emacs 23.1 as condition-case-no-debug, but not advertised)
2319 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
2321 *** Variable `stack-trace-on-error' removed.
2323 *** The debugger can now "continue" from an error, which means it will
2324 jump to the error handler as if the debugger had not been invoked
2325 instead of jumping all the way to the top-level.
2327 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2328 This can be useful when `inhibit-quit' is set.
2330 ** The new function `server-eval-at' allows evaluation of Lisp forms on
2331 named Emacs server instances.
2333 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
2334 to redirect STDOUT to a file.
2336 ** The function `format-time-string' now supports the %N directive,
2337 for higher-resolution time stamps.
2339 ** New input reading functions
2341 *** New function `read-char-choice' reads a restricted set of
2342 characters, discarding any inputs not inside the set.
2344 *** The command `read-color' now requires a match for a color name
2345 or RGB triplet, instead of signaling an error if the user provides
2348 **** `facemenu-read-color' is now an alias for `read-color'.
2350 ** `image-library-alist' is renamed to `dynamic-library-alist'.
2351 The variable is now used to load all kind of supported dynamic libraries,
2352 not just image libraries. The previous name is still available as an
2355 ** Syntax parsing changes
2357 *** New variable `syntax-propertize-function'.
2358 This replaces `font-lock-syntactic-keywords' which is now obsolete.
2359 This allows syntax-table properties to be set independently from font-lock:
2360 just call syntax-propertize to make sure the text is propertized.
2361 Together with this new variable come a new hook
2362 syntax-propertize-extend-region-functions, as well as two helper functions:
2363 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
2364 as-is; and syntax-propertize-rules which provides a new way to specify
2367 *** Syntax tables support a new "comment style c" additionally to style b.
2369 ** New hook `post-self-insert-hook', run after `self-insert-command'.
2371 ** frame-local variables cannot be let-bound any more.
2373 ** Major and minor mode changes
2375 *** `set-auto-mode' now respects mode: local variables at the end of files,
2376 as well as those in the -*- line.
2378 *** `prog-mode' is a new major mode from which programming modes
2381 **** `prog-mode-hook' can be used to enable features for programming
2382 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
2383 on-the-fly spell checking for comments and strings.
2385 *** New hook `change-major-mode-after-body-hook', run by
2386 `run-mode-hooks' just before any other mode hooks.
2388 *** Enabled globalized minor modes can be disabled in specific major modes.
2389 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
2390 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
2392 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
2394 ** File-handling changes
2396 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
2397 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
2398 both non-nil. Interactively, TRASH defaults to t, unless a prefix
2399 argument is supplied (see Trash changes, above).
2401 *** New file predicates: `file-equal-p', `file-in-directory-p'.
2403 ** Tool-bars can display separators.
2404 Tool-bar separators are handled like menu separators in menu-bar maps,
2405 i.e. via menu entries of the form `(menu-item "--")'.
2409 *** Animated images support (currently animated gifs only).
2411 **** `image-animated-p' returns non-nil if an image can be animated.
2413 **** `image-animate' animates a supplied image spec.
2415 **** `image-animate-timer' returns the timer object for an image that
2418 *** `image-extension-data' has been renamed to `image-metadata'.
2419 The old name is an obsolete alias to the new one.
2421 *** Image mode can view any image type that ImageMagick supports.
2422 This requires Emacs to be built with ImageMagick support.
2424 **** New function `imagemagick-types', defined if ImageMagick support
2425 is enabled, returns a list of image file extensions that your
2426 ImageMagick installation supports.
2428 **** New function `imagemagick-register-types' enables ImageMagick
2429 image types in Image mode and in `create-image' and other helper
2432 **** New option `imagemagick-types-inhibit' excludes certain
2433 ImageMagick image types from `imagemagick-register-types'.
2435 **** With ImageMagick support, there are extra Image mode commands to
2436 resize and rotate images: `image-transform-fit-to-height',
2437 `image-transform-fit-to-width', `image-transform-set-rotation', and
2438 `image-transform-set-scale'.
2440 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
2441 passes it to the mail user agent function. This argument specifies an
2442 action for returning to the caller after finishing with the mail. For
2443 example, this is used by Rmail to optionally delete a mail window.
2445 ** XML and HTML parsing
2446 If Emacs is compiled with libxml2 support, there are two new
2447 functions: `libxml-parse-html-region' (which parses "real world" HTML)
2448 and `libxml-parse-xml-region' (which parses XML). Both return an
2449 Emacs Lisp parse tree.
2451 ** Networking and encryption changes
2453 *** `open-network-stream' can now be used to open an encrypted stream.
2454 It now accepts an optional `:type' parameter for initiating a TLS
2455 connection, directly or via STARTTLS. To do STARTTLS, additional
2456 parameters (`:end-of-command', `:success', `:capabilities-command')
2457 must also be supplied.
2459 *** New library gnutls.el.
2460 The new function `gnutls-available-p' returns non-nil if Emacs is
2461 built with GnuTLS support. The main entry points are
2462 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
2463 these functions through `open-network-stream', because that can
2464 upgrade connections through STARTTLS opportunistically or use plain
2465 SSL, depending on your needs. For debugging, set `gnutls-log-level'
2468 *** New primitive `secure-hash' that supports many secure hash algorithms:
2469 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
2470 sha1.el has been removed. The `sha1' feature is provided by default.
2474 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
2476 ** Progress reporters can now "spin".
2477 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
2478 now be nil, or omitted. This makes a "non-numeric" reporter. Each
2479 time you call `progress-reporter-update' on that progress reporter,
2480 with a nil or omitted VALUE argument, the reporter message is
2481 displayed with a "spinning bar".
2483 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
2484 being reverted, even if the buffer has a local `revert-buffer-function'.
2486 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
2487 If delayed-warnings-list is non-nil, the command loop calls
2488 `delayed-warnings-hook' after `post-command-hook'. At present, this
2489 is only used by Emacs on some platforms to display warnings during
2490 startup, which might otherwise not be noticed. This uses the
2491 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
2493 ** rx.el has a new `group-n' construct for explicitly numbered groups.
2495 ** New function `make-composed-keymap' that constructs a new keymap
2496 from multiple input maps. You can use this to make a keymap that
2497 inherits from multiple maps, eg:
2498 (set-keymap-parent newmap (make-composed-keymap othermap parent))
2500 ** New function `string-prefix-p'.
2501 (This was actually added in Emacs 23.2 but was not advertised at the time.)
2503 ** New reader macro ## that stands for the empty symbol.
2504 This means that the empty symbol can now be read back. Also, #: by itself
2505 (when not immediately followed by a possible symbol character) stands for
2506 an empty uninterned symbol.
2508 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
2510 ** The following functions and variables are obsolete:
2512 *** `tooltip-use-echo-area' is obsolete.
2513 Rather than setting this to t, disable Tooltip mode instead.
2515 *** buffer-substring-filters is obsolete.
2516 Use `filter-buffer-substring-functions' instead.
2518 *** `byte-compile-disable-print-circle' is obsolete.
2520 *** `deferred-action-list' and `deferred-action-function' are obsolete.
2521 Use `post-command-hook' instead.
2523 *** `font-lock-maximum-size' is obsolete.
2526 * Changes in Emacs 24.1 on non-free operating systems
2528 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
2529 and also when HOME is set to C:\ by default.
2531 ** New configure.bat options
2533 *** --enable-checking builds Emacs with extra runtime checks.
2535 *** --distfiles specifies files to be included in binary distribution.
2537 *** --without-gnutls disables automatic GnuTLS detection.
2539 *** --lib for general library linkage, works with the USER_LIBS build variable.
2541 ** New make target `dist' to create binary distribution for MS Windows.
2543 ** The Lisp function `w32-default-color-map' is now obsolete.
2544 (It is only used internally in the Emacs C code.)
2546 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
2547 reappear on mouse-over. (Requires OS X 10.6 or later.)
2549 ** On Mac OS X, dragging a file into Emacs visits the file, like on
2550 other platforms, rather than inserting its contents into the buffer.
2553 ----------------------------------------------------------------------
2554 This file is part of GNU Emacs.
2556 GNU Emacs is free software: you can redistribute it and/or modify
2557 it under the terms of the GNU General Public License as published by
2558 the Free Software Foundation, either version 3 of the License, or
2559 (at your option) any later version.
2561 GNU Emacs is distributed in the hope that it will be useful,
2562 but WITHOUT ANY WARRANTY; without even the implied warranty of
2563 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2564 GNU General Public License for more details.
2566 You should have received a copy of the GNU General Public License
2567 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2572 paragraph-separate: "[
\f]*$"