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 ** New option `scroll-bar-adjust-thumb-portion'.
63 * Editing Changes in Emacs 24.4
65 ** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
66 bound to <f11> and M-<f10>, respectively.
69 * Changes in Specialized Modes and Packages in Emacs 24.4
71 ** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.
73 ** completing-read-multiple's separator can now be a regexp.
74 The default separator is changed to allow surrounding spaces around the comma.
78 *** Battery information via the BSD `apm' utility is now supported.
82 *** New macro cl-tagbody.
85 *** letf is now just an alias for cl-letf.
89 *** Calc by default now uses the Gregorian calendar for all dates, and
90 uses January 1, 1 AD as its day number 1. Previously Calc used the
91 Julian calendar for dates before September 14, 1752, and it used
92 December 31, 1 BC as its day number 1; the new scheme is more
93 consistent with Calendar's calendrical system and day numbering.
95 *** The new variable `calc-gregorian-switch' lets you configure the
96 date when Calc switches from the Julian to the Gregorian calendar.
97 Nil, the default value, means to always use the Gregorian calendar.
98 The value (YEAR MONTH DAY) means to start using the Gregorian calendar
103 *** New option `erc-accidental-paste-threshold-seconds'.
104 If set to a number, this can be used to avoid accidentally paste large
105 amounts of data into the ERC input.
107 ** Icomplete is a bit more like IDO.
108 *** key bindings to navigate through and select the completions.
109 *** The icomplete-separator is customizable, and its default has changed.
110 *** Removed icomplete-show-key-bindings.
114 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
115 visit the next image file and the previous image file in the same
116 directory, respectively.
119 *** The command `image-mode-fit-frame' deletes other windows.
120 When toggling, it restores the frame's previous window configuration.
121 It also has an optional frame argument, which can be used by Lisp
122 callers to fit the image to a frame other than the selected frame.
126 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
127 and adds it to the search string.
129 ** MH-E has been updated to MH-E version 8.4.
130 See MH-E-NEWS for details.
133 ** The unrmail command converts from BABYL to mboxrd rather than mboxo.
134 Customize `unrmail-mbox-format' to change this.
137 ** Similarly, customize `rmail-mbox-format' to influence some minor aspects
138 of how Rmail displays non-MIME messages.
141 ** New function `ses-rename-cell' to give SES cells arbitrary names.
143 ** trace-function was largely rewritten.
144 New features include:
145 - no prompting for the destination buffer, unless a prefix-arg was used.
146 - additionally to prompting for a destination buffer, when a prefix-arg is
147 used, the user can enter a "context", i.e. Lisp expression whose value at the
148 time the function is entered/exited will be printed along with the function
149 name and arguments. Useful to trace the value of (current-buffer) or
150 (point) when the function is invoked.
152 ** New command `delete-duplicate-lines' has two types of operation:
153 when its arg ADJACENT is non-nil (when called interactively with C-u C-u)
154 it works like the utility `uniq'. Otherwise by default it deletes
155 duplicate lines everywhere in the region without regard to adjacency.
159 *** New connection method "adb", which allows to access Android
160 devices by the Android Debug Bridge. The variable `tramp-adb-sdk-dir'
161 must be set to the Android SDK installation directory.
163 *** Handlers for `file-acl' and `set-file-acl' for remote machines
164 which support POSIX ACLs.
168 *** The commands `woman-default-faces' and `woman-monochrome-faces'
169 are obsolete. Customize the `woman-* faces instead.
171 ** Obsolete packages:
173 *** longlines.el is obsolete; use visual-line-mode instead.
175 *** terminal.el is obsolete; use term.el instead.
178 * New Modes and Packages in Emacs 24.4
179 ** New nadvice.el package offering lighter-weight advice facilities.
181 - add-function/remove-function which can be used to add/remove code on any
182 function-carrying place, such as process-filters or `<foo>-function' hooks.
183 - advice-add/advice-remove to add/remove a piece of advice on a named function,
184 much like `defadvice' does.
186 * Incompatible Lisp Changes in Emacs 24.4
188 ** frame-local variables that affect redisplay do not work any more.
189 More specifically, the redisplay does not bother to check for a frame-local
190 value when looking up variables.
192 ** nil and "unbound" are indistinguishable in symbol-function.
193 `symbol-function' never signals `void-function' any more.
194 `fboundp' returns non-nil if the symbol was `fset' to nil.
196 ** `defadvice' does not honor the `freeze' flag and cannot advise
197 special-forms any more.
199 ** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
200 VAR was bound to nil which was not tremendously useful and just lead to
201 spurious warnings about an unused var.
203 ** The return value of `backup-buffer' has changed.
204 The second argument is no longer an SELinux context, instead it is an
205 alist of extended attributes as returned by the new function
206 `file-extended-attributes'. The attributes can be applied to another
207 file using `set-file-extended-attributes'.
209 * Lisp changes in Emacs 24.4
211 ** Support for filesystem notifications.
212 Emacs now supports notifications of filesystem changes, such as
213 creation, modification, and deletion of files. This requires the
214 'inotify' API on GNU/Linux systems. On MS-Windows systems, this is
215 supported for Windows XP and newer versions.
219 *** The `face-spec-set' is now analogous to `setq' for face specs.
220 Its third arg now accepts values specifying exactly which face spec to
221 set (defface, custom, or user spec), and it directly sets the relevant
222 property using the supplied face spec.
224 *** Face specs set via Custom themes now replace the `defface' spec
225 rather than inheriting from it (as do face specs set via Customize).
227 *** New face characteristic (supports :underline (:style wave))
228 specifies whether or not the terminal can display a wavy line.
230 ** time-to-seconds is not obsolete any more.
231 ** New function special-form-p.
232 ** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
233 text-property on the first char.
235 ** The `defalias-fset-function' property lets you catch calls to defalias
236 and redirect them to your own function instead of `fset'.
238 ** The 9th element returned by `file-attributes' is now unspecified.
239 Formerly, it was t if the file's gid would change if file were deleted
240 and recreated. This value has been inaccurate for years on many
241 platforms, and nobody seems to have noticed or cared.
243 ** The function `file-ownership-preserved-p' now has an optional
244 argument GROUP which causes it check for file group too. This can be
245 used in place of the 9th element of `file-attributes'.
247 ** New functions `group-gid' and `group-real-gid'.
249 ** The 6th argument to `copy-file' has been renamed to
250 `preserve-extended-attributes' as it now handles both SELinux context
253 * Changes in Emacs 24.4 on non-free operating systems
256 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
257 The backtrace is written to the 'emacs_backtrace.txt' file in the
258 directory where Emacs was running.
261 * Installation Changes in Emacs 24.3
263 ** The default X toolkit is now Gtk+ version 3.
264 If you don't pass `--with-x-toolkit' to configure, or if you use
265 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
266 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
267 You can explicitly require a specific version by passing
268 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
270 ** New configure option `--enable-link-time-optimization', to utilize
271 an appropriate feature provided by GCC since version 4.5.0.
273 ** New configure option `--without-all' to disable most of the optional
274 features (image support, etc.) that are normally enabled by default.
276 ** New configure option `--enable-gcc-warnings' (for developing/debugging
277 Emacs). If building with GCC, this enables compile-time checks that
278 warn/give errors about possibly-questionable C code. On a recent GNU
279 system there should be no warnings; on older and on non-GNU systems
280 the results may be useful to developers.
282 ** The configure option `--enable-use-lisp-union-type' has been
283 renamed to `--enable-check-lisp-object-type', as the resulting
284 Lisp_Object type no longer uses a union to implement the compile time
285 check that this option enables.
287 ** The configure option `--disable-maintainer-mode' has been removed,
288 as it was confusingly-named and rarely useful.
290 ** The configure options `--program-prefix', `--program-suffix', and
291 `--program-transform-name' apply to more than just the installed
292 binaries. Now they also affect the man pages, icons, and the
293 etc/emacs.desktop file; but not the info pages, since this would break
294 links between the various manuals.
296 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
297 overwriting "emacs" in the installation bin/ directory with a link
300 ** Emacs uses libtinfo in preference to libncurses, if available.
302 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
303 /usr/pkg/lib to the linker search path. You must add them yourself if
306 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
307 (from the bin and libexec directories, respectively). The former is
308 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
311 * Startup Changes in Emacs 24.3
313 ** Emacs no longer searches for `leim-list.el' files beneath the standard
314 lisp/ directory. There should not be any there anyway. If you have
315 been adding them there, put them somewhere else; e.g., site-lisp.
317 ** The `--no-site-lisp' command line option now works for Nextstep builds.
320 * Changes in Emacs 24.3
324 *** `C-h f' (`describe-function') can now perform autoloading.
325 When this command is called for an autoloaded function whose docstring
326 contains a key substitution construct, that function's library is
327 automatically loaded, so that the documentation can be shown
328 correctly. To disable this, set `help-enable-auto-load' to nil.
330 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
331 even after their associated libraries have been loaded (and the
332 autoloads have been redefined as functions).
336 *** Images displayed via ImageMagick now support transparency and the
337 :background image specification property.
339 *** When available, ImageMagick support is automatically enabled.
340 It is no longer necessary to call `imagemagick-register-types'
341 explicitly to install ImageMagick image types; that function is called
342 automatically at startup, or when customizing an imagemagick- option.
344 *** Setting `imagemagick-types-inhibit' to t now disables the use of
345 ImageMagick to view images. (You must call `imagemagick-register-types'
346 afterwards if you do not use customize to change this.)
348 *** The new variable `imagemagick-enabled-types' also affects which
349 ImageMagick types are treated as images. The function
350 `imagemagick-filter-types' returns the list of types that will be
355 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
356 next and previous path separator, respectively.
358 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
359 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
360 non-nil before enabling the mode.
364 *** New option `mode-line-default-help-echo' specifies the help text
365 (shown in a tooltip or in the echo area) for any part of the mode line
366 that does not have its own specialized help text.
368 *** You can now click mouse-3 in the coding system indicator to invoke
369 `set-buffer-file-coding-system'.
373 *** emacsclient now obeys string values for `initial-buffer-choice',
374 if it is told to open a new frame without specifying any file to visit
375 or expression to evaluate.
377 *** New option `server-auth-key' specifies a shared server key.
379 ** Emacs now generates backtraces on fatal errors.
380 On encountering a fatal error, Emacs now outputs a textual description
381 of the fatal signal, and a short backtrace on platforms like glibc
382 that support backtraces.
384 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
385 This minor mode replaces `toggle-read-only', which is now obsolete.
387 ** Most `y-or-n' prompts now allow you to scroll the selected window.
388 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
389 respectively, without exiting from the prompt.
391 ** In the Package Menu, newly-available packages are listed as "new",
392 and sorted above the other "available" packages by default.
394 ** If your Emacs was built from a bzr checkout, the new variable
395 `emacs-bzr-version' contains information about the bzr revision used.
397 ** New option `create-lockfiles' specifies usage of lockfiles.
398 It defaults to t. Changing it to nil inhibits the creation of lock
399 files (use this with caution).
401 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
402 variables on remote hosts.
404 ** The entry for PCL-CVS has been removed from the Tools menu.
405 The PCL-CVS commands are still available via the keyboard.
407 ** Using "unibyte: t" in Lisp source files is obsolete.
408 Use "coding: raw-text" instead.
410 ** Internationalization
412 *** New language environment: Persian.
414 *** New input method `vietnamese-vni'.
416 ** Nextstep (GNUstep / Mac OS X) port
418 *** Support for fullscreen and the frame parameter fullscreen.
420 *** A file dialog is used for open/save operations initiated from the
424 * Editing Changes in Emacs 24.3
426 ** Search and Replace
428 *** Non-regexp Isearch now performs "lax" space matching.
429 Each sequence of spaces in the supplied search string may match any
430 sequence of one or more whitespace characters, as specified by the
431 variable `search-whitespace-regexp'. (This variable is also used by a
432 similar existing feature for regexp Isearch.)
434 *** New Isearch command `M-s SPC' toggles lax space matching.
435 This applies to both ordinary and regexp Isearch.
437 *** New option `replace-lax-whitespace'.
438 If non-nil, `query-replace' uses flexible whitespace matching too.
441 *** Global `M-s _' starts a symbol (identifier) incremental search,
442 and `M-s _' in Isearch toggles symbol search mode.
443 `M-s c' in Isearch toggles search case-sensitivity.
445 ** Navigation commands
447 *** New binding `M-g c' for `goto-char'.
449 *** New binding `M-g TAB' for `move-to-column'.
451 *** `M-g TAB' (`move-to-column') prompts for a column number if called
452 interactively with no prefix arg. Previously, it moved to column 1.
454 ** New option `yank-handled-properties' allows processing of text
455 properties on yanked text, in ways that are more general than just
456 removing them (as is done by `yank-excluded-properties').
458 ** New option `delete-trailing-lines' specifies whether
459 M-x delete-trailing-whitespace should delete trailing lines at the end
460 of the buffer. It defaults to t.
462 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
464 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
465 `ucs-insert' is now an obsolete alias for `insert-char'.
467 ** The `z' key no longer has a binding in most special modes.
468 It used to be bound to `kill-this-buffer', but `z' is too easy to
471 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
472 It copies the region-rectangle as the last rectangle kill.
476 *** `C-x r +' is now overloaded to invoke `append-to-register'.
478 *** New option `register-separator' specifies the register containing
479 the text to put between collected texts for use with
480 M-x append-to-register and M-x prepend-to-register.
483 * Changes in Specialized Modes and Packages in Emacs 24.3
485 ** Common Lisp emulation (CL)
487 *** CL's main entry is now (require 'cl-lib).
488 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
489 i.e., all its definitions have the "cl-" prefix (and internal definitions
490 use the "cl--" prefix).
492 If `cl' provided a feature under the name `foo', then `cl-lib'
493 provides it under the name `cl-foo' instead; with the exceptions of the
494 few `cl' definitions that had to use `foo*' to avoid conflicts with
495 pre-existing Elisp entities. These have been renamed to `cl-foo'
496 rather than `cl-foo*'.
498 The old `cl' is now deprecated and is mainly just a bunch of aliases that
499 provide the old, non-prefixed names. Some exceptions are listed below:
501 *** `cl-flet' is not like `flet' (which is deprecated).
502 Instead it obeys the behavior of Common-Lisp's `flet'.
503 In particular, in cl-flet function definitions are lexically scoped,
504 whereas in flet the scoping is dynamic.
506 *** `cl-labels' is slightly different from `labels'.
507 The difference is that it relies on the `lexical-binding' machinery
508 (as opposed to the `lexical-let' machinery used previously) to capture
509 definitions in closures, so such closures will only work if `lexical-binding'
512 *** `cl-letf' is not exactly like `letf'.
513 The only difference is in details that relate to some deprecated usage
514 of `symbol-function' in place forms.
516 *** `progv' was rewritten to use the `let' machinery.
517 A side effect is that variables without corresponding values are bound
518 to nil rather than being made unbound.
520 *** The following methods of extending `setf' are obsolete
521 (use features from gv.el instead):
522 `define-modify-macro' (use `gv-letplace')
523 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
524 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
525 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
529 *** Changes are now highlighted using the same color scheme as in
530 modern VCSes. Deletions are displayed in red (new faces
531 `diff-refine-removed' and `smerge-refined-removed', and new definition
532 of `diff-removed'), insertions in green (new faces `diff-refine-added'
533 and `smerge-refined-added', and new definition of `diff-added').
535 *** The variable `diff-use-changed-face' defines whether to use the
536 face `diff-changed', or `diff-removed' and `diff-added' to highlight
537 changes in context diffs.
539 *** The new command `diff-delete-trailing-whitespace' removes trailing
540 whitespace introduced by a diff.
542 ** Ediff now uses the same color scheme as Diff mode.
546 A new version of python.el, which provides several new features, including:
547 per-buffer shells, better indentation, Python 3 support, and improved
548 shell-interaction compatible with iPython (and virtually any other
551 *** Some user options have been replaced/renamed, including (old -> new):
552 **** python-indent -> python-indent-offset
553 **** python-guess-indent -> python-indent-guess-indent-offset
554 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
555 **** python-use-skeletons -> python-skeleton-autoinsert
557 *** Some user options have been removed, including:
559 **** `python-indent-string-contents': Strings are never indented.
561 **** `python-honour-comment-indentation':
562 Comments are always considered as indentation markers.
564 **** `python-continuation-offset': Indentation is automatically
565 calculated in a pep8 compliant way depending on the context.
567 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
568 Have no direct mapping as the shell interaction is completely different.
570 **** `python-python-command', `python-jython-command':
571 Replaced by `python-shell-interpreter'.
573 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
574 `python-pdbtrack-minor-mode-string', `python-source-modes':
577 *** Some commands have been replaced (old -> new):
578 **** python-insert-class -> python-skeleton-class
579 **** python-insert-def -> python-skeleton-def
580 **** python-insert-for -> python-skeleton-for
581 **** python-insert-if -> python-skeleton-if
582 **** python-insert-try/except -> python-skeleton-try
583 **** python-insert-try/finally -> python-skeleton-try
584 **** python-insert-while -> python-skeleton-while
585 **** python-find-function -> python-nav-jump-to-defun
586 **** python-next-statement -> python-nav-forward-sentence
587 **** python-previous-statement -> python-nav-backward-sentence
588 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
589 **** python-end-of-defun-function -> python-nav-end-of-defun
590 **** python-send-buffer -> python-shell-send-buffer
591 **** python-send-defun -> python-shell-send-defun
592 **** python-send-region -> python-shell-send-region
593 **** python-send-region-and-go -> emulate with python-shell-send-region
594 and python-shell-switch-to-shell
595 **** python-send-string -> python-shell-send-string
596 **** python-switch-to-python -> python-shell-switch-to-shell
597 **** python-describe-symbol -> python-eldoc-at-point
601 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
603 *** The D-Bus object manager interface is implemented.
605 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
606 if their value does not fit into Emacs's integer range.
608 *** The function `dbus-call-method' is now non-blocking.
609 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
611 *** Signals can also be sent as unicast messages.
613 *** The argument list of `dbus-register-signal' has been extended,
614 according to the new match rule types of D-Bus.
616 *** `dbus-init-bus' supports private connections.
618 *** There is a new function `dbus-setenv'.
620 ** `desktop-path' no longer includes the "." directory.
621 Desktop files are now located in ~/.emacs.d by default.
625 *** `dired-do-async-shell-command' executes each file sequentially
626 if the command ends in `;' (when operating on multiple files).
627 Otherwise, it executes the command on each file in parallel.
629 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
630 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
633 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
634 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
635 mark/unmark/flag all files in the active region.
637 *** The minibuffer default for `=' (`dired-diff) has changed.
638 It is now the backup file for the file at point, if one exists.
639 In Transient Mark mode the default is the file at the active mark.
641 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
642 The global binding for `M-=', `count-words-region' is in effect.
646 *** New module "notifications", which can send a notification when you
647 receive a private message or your nickname is mentioned.
649 *** ERC will look up server/channel names via auth-source and use any
652 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
653 only applies to messages sent by lurkers.
655 ** reStructuredText mode
657 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
658 fontification, comment handling, and customization have all been revised
661 *** Support for `imenu' and `which-function-mode'.
663 *** The reStructuredText syntax is more closely covered.
664 Sphinx support has been improved.
666 *** `rst-insert-list' inserts new list or continues existing lists.
668 *** A negative prefix argument always works for `rst-adjust'.
670 *** The window configuration is reset after displaying a TOC.
672 *** The constant `rst-version' describes the rst.el package version.
676 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
678 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
680 *** `sh-use-smie' lets you choose a new indentation and navigation code.
684 *** The free software compiler GHDL is supported (and now the default).
686 *** Support for the VHDL-AMS packages has been added/updated.
688 *** Updated to the 2002 revision of the VHDL standard.
690 *** Accepts \r and \f as whitespace.
694 *** The faces used by Apropos are now directly customizable.
695 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
696 see the `apropos' Custom group for details.
698 *** The old options whose values specified faces to use have been removed
699 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
703 *** This package has been rewritten to use Tabulated List mode.
705 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
706 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
710 *** You can customize the header text that appears above each calendar month.
711 See the variable `calendar-month-header'.
713 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
715 *** The calendars produced by cal-html include holidays.
716 Customize `cal-html-holidays' to change this.
718 ** Compile has a new option `compilation-always-kill'.
722 *** `custom-reset-button-menu' now defaults to t.
724 *** Non-option variables are never matched in `customize-apropos' and
725 `customize-apropos-options' (i.e., the prefix argument does nothing for
730 *** The variables `term-default-fg-color' and `term-default-bg-color'
731 are now deprecated in favor of the customizable face `term'.
733 *** You can customize how to display ANSI terminal colors and styles
734 by customizing the corresponding `term-color-<COLOR>',
735 `term-color-underline' and `term-color-bold' faces.
739 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
741 *** Remote processes are now also supported on remote MS-Windows hosts.
745 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
746 Previously, this slot stored semicolon-separated attribute-value pairs
747 appended to some imap URLs, but this is not compatible with RFC 3986.
748 So now the `filename' slot stores the entire path and query components,
749 and the `attributes' slot is always nil.
751 *** New function `url-encode-url' for encoding a URI string.
752 The `url-retrieve' function now uses this to encode its URL argument,
753 in case that is not properly encoded.
755 ** notifications.el supports now version 1.2 of the Notifications API.
756 The function `notifications-get-capabilities' returns the supported
759 ** Flymake uses fringe bitmaps to indicate errors and warnings.
760 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
761 `flymake-warning-bitmap'.
763 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
764 specifying URL types that should be converted to remote file names at
765 the FFAP prompt. The default is now '("ftp").
767 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
768 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
770 ** New option `mouse-avoidance-banish-position' specifies where the
771 `banish' mouse avoidance setting moves the mouse.
773 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
774 closing brackets to be aligned with the line of the opening bracket.
776 ** In Proced mode, new command `proced-renice' renices marked processes.
778 ** New option `async-shell-command-buffer' specifies the buffer to use
779 for a new asynchronous `shell-command' when the default output buffer
780 `*Async Shell Command*' is already in use.
782 ** SQL mode has a new option `sql-db2-escape-newlines'.
783 If non-nil, newlines sent to the command interpreter will be escaped
784 by a backslash. The default does not escape the newlines and assumes
785 that the sql statement will be terminated by a semicolon.
787 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
788 (and modes that derive from it), sorts the column at point, or the Nth
789 column if a numeric prefix argument is given.
791 ** `which-func-modes' now defaults to t, so Which Function mode, when
792 enabled, applies to all applicable major modes.
794 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
797 ** Follow mode no longer works by using advice.
798 The option `follow-intercept-processes' has been removed.
800 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
802 ** Hooks renamed to avoid obsolete "-hooks" suffix:
803 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
804 *** semantic-change-hooks -> semantic-change-functions
805 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
806 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
807 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
808 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
809 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
810 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
811 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
812 *** rcirc-activity-hooks -> rcirc-activity-functions
813 *** rcirc-print-hooks -> rcirc-print-functions
814 *** dbus-event-error-hooks -> dbus-event-error-functions
815 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
816 *** checkdoc-style-hooks -> checkdoc-style-functions
817 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
818 *** archive-extract-hooks -> archive-extract-hook
819 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
820 *** hfy-post-html-hooks -> hfy-post-html-hook
821 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
822 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
823 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
824 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
829 In most cases, assoc+member+push+delq work just as well.
830 And in any case it's just a terrible package: ugly semantics, terrible
831 inefficiency, and not namespace-clean.
840 * Incompatible Lisp Changes in Emacs 24.3
842 ** Docstrings starting with `*' no longer indicate user options.
843 Only variables defined using `defcustom' are considered user options.
844 The function `user-variable-p' is now an obsolete alias for
847 ** The return values of `defalias', `defun' and `defmacro' have changed,
848 and are now undefined. For backwards compatibility, `defun' and
849 `defmacro' currently return the name of the newly defined
850 function/macro, but this should not be relied upon.
852 ** `random' by default now returns a different random sequence in
853 every Emacs run. Use `(random S)', where S is a string, to set the
854 random seed to a value based on S, in order to get a repeatable
855 sequence in later calls.
857 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
858 that substring is inserted literally even if the LITERAL arg is
859 non-nil, instead of causing an error to be signaled.
861 ** `select-window' now always makes the window's buffer current.
862 It does so even if the window was selected before.
864 ** The function `x-select-font' can return a font spec, instead of a
865 font name as a string. Whether it returns a font spec or a font name
866 depends on the graphical library.
868 ** `face-spec-set' no longer sets frame-specific attributes when the
869 third argument is a frame (that usage was obsolete since Emacs 22.2).
871 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
873 ** The CL package's `get-setf-method' function no longer exists.
874 Generalized variables are now part of core Emacs Lisp, and implemented
875 differently to the way cl.el used to do it. It is not possible to
876 define a compatible replacement for `get-setf-method'. See the file
877 gv.el for internal details of the new implementation.
879 ** The arguments of `dbus-register-signal' are no longer just strings,
880 but keywords or keyword-string pairs. The old argument list will
881 still be supported for Emacs 24.x.
883 ** Miscellaneous name changes
884 Some Lisp symbols have been renamed to correct their spelling,
885 or to be more consistent with standard Emacs terminology.
887 *** Renamed functions
888 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
889 **** inactivate-input-method -> deactivate-input-method
890 **** quail-inactivate -> quail-deactivate
891 **** robin-inactivate -> robin-deactivate
892 **** viper-inactivate-input-method -> viper-deactivate-input-method
893 **** viper-inactivate-input-method-action ->
894 viper-deactivate-input-method-action
895 **** ucs-input-inactivate -> ucs-input-deactivate
898 The old hooks are still supported for backward compatibility, but they
899 are deprecated and will be removed eventually.
900 **** input-method-inactivate-hook -> input-method-deactivate-hook
901 **** robin-inactivate-hook -> robin-deactivate-hook
902 **** quail-inactivate-hook -> quail-deactivate-hook
904 *** Renamed variables
905 **** follow-deactive-menu -> follow-inactive-menu
906 **** inactivate-current-input-method-function ->
907 deactivate-current-input-method-function
909 ** Some obsolete functions, variables, and faces have been removed:
910 *** `last-input-char', `last-command-char', `unread-command-char'
911 *** `facemenu-unlisted-faces'
912 *** `rmail-decode-mime-charset'
913 *** `iswitchb-read-buffer'
914 *** `sc-version', `sc-submit-bug-report'
915 *** `set-char-table-default'
916 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
917 *** `compile-internal'
919 *** `mode-line-inverse-video'
920 *** `follow-mode-off-hook'
921 *** `cvs-commit-buffer-require-final-newline'
922 (use `log-edit-require-final-newline' instead)
923 *** `cvs-changelog-full-paragraphs'
924 (use `log-edit-changelog-full-paragraphs' instead)
925 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
926 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
927 *** `vc-master-templates' (use `vc-handled-backends' instead)
928 *** `vc-checkout-carefully'
931 * Lisp changes in Emacs 24.3
933 ** CL-style generalized variables are now in core Elisp.
934 `setf' is autoloaded; `push' and `pop' accept generalized variables.
935 You can define your own generalized variables using `gv-define-simple-setter',
936 `gv-define-setter', etc.
938 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
939 This can significantly speed up execution of non-byte-compiled code,
940 but can also bump into previously unnoticed cyclic dependencies.
941 These are generally harmless: they will simply cause the macro calls
942 to be left for later expansion (as before), but will result in a
943 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
944 You may wish to restructure your code so this does not happen.
946 ** New sampling-based Elisp profiler.
947 Try M-x profiler-start, do some work, and then call M-x profiler-report.
948 When finished, use M-x profiler-stop. The sampling rate can be based on
949 CPU time or memory allocations.
951 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
952 The interpretation of the DECLS is determined by `defun-declarations-alist'.
954 ** New macros `setq-local' and `defvar-local'.
956 ** Face underlining can now use a wave.
958 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
959 of `read-regexp' accepts a string ending with a colon and space, and its
960 second argument DEFAULTS can be a list of strings accessible via `M-n'
961 in the minibuffer ahead of other hard-coded useful regexp-related values.
962 More commands use `read-regexp' now to read their regexp arguments.
966 *** New function `completion-table-with-quoting' to handle completion
967 in the presence of quoting, such as file completion in shell buffers.
969 *** New function `completion-table-subvert' to use an existing completion
970 table, but with a different prefix.
974 *** New error type and new function `user-error'.
975 These do not trigger the debugger.
977 *** New option `debugger-bury-or-kill', saying what to do with the
978 debugger buffer when exiting debug.
980 *** Set `debug-on-message' to enter the debugger when a certain
981 message is displayed in the echo area. This can be useful when trying
982 to work out which code is doing something.
984 *** New var `inhibit-debugger', automatically set to prevent accidental
985 recursive invocations.
989 *** New command `fit-frame-to-buffer' adjusts the frame height to
992 *** The command `fit-window-to-buffer' can adjust the frame height
993 if the new option `fit-frame-to-buffer' is non-nil.
995 *** New macro `with-temp-buffer-window', similar to
996 `with-output-to-temp-buffer'.
998 *** `temp-buffer-resize-mode' no longer resizes windows that have been
1001 *** New option `switch-to-buffer-preserve-window-point' to restore a
1002 window's point when switching buffers.
1004 *** New display action alist entries `window-height' and `window-width'
1005 specify the size of new windows created by `display-buffer'.
1007 *** New display action alist entry `pop-up-frame-parameters', if
1008 non-nil, specifies frame parameters to give any newly-created frame.
1010 *** New display action alist entry `inhibit-switch-frame', if non-nil,
1011 tells display action functions to avoid changing which frame is
1014 *** New display action alist entry `previous-window', if non-nil,
1015 specifies window to reuse in `display-buffer-in-previous-window'.
1017 *** New display action functions `display-buffer-below-selected',
1018 and `display-buffer-in-previous-window'.
1020 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1021 now accept a third argument to avoid choosing the selected window.
1023 *** Additional values recognized for option `window-combination-limit'.
1025 *** The following variables are obsolete, as they can be replaced by
1026 appropriate entries in the `display-buffer-alist' function introduced
1028 **** `dired-shrink-to-fit'
1029 **** `display-buffer-reuse-frames'
1030 **** `display-buffer-function'
1031 **** `special-display-buffer-names'
1032 **** `special-display-frame-alist'
1033 **** `special-display-function'
1034 **** `special-display-regexps'
1038 *** `current-time-string' no longer requires that its argument's year
1039 must be in the range 1000..9999. It now works with any year supported
1040 by the underlying C implementation.
1042 *** `current-time' now returns extended-format time stamps
1043 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1044 PSEC is typically a multiple of 1000 on current machines. Other
1045 functions that use this format, such as `file-attributes' and
1046 `format-time-string', have been changed accordingly. Old-format time
1047 stamps are still accepted.
1049 *** The format of timers in `timer-list' and `timer-idle-list' is now
1050 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1051 The PSECS slot is new, and uses picosecond resolution. It can be
1052 accessed via the new `timer--psecs' accessor.
1054 *** Last-modified time stamps in undo lists now are of the form
1055 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1057 ** Floating point functions now always return special values like NaN,
1058 instead of signaling errors, if given invalid args; e.g., (log -1.0).
1059 Previously, they returned NaNs on some platforms but signaled errors
1060 on others. The affected functions are acos, asin, tan, exp, expt,
1061 log, log10, sqrt, and mod.
1063 ** New fringe bitmap `exclamation-mark'.
1065 ** Miscellaneous changes to special forms and macros
1067 *** `defun' and `defmacro' are now macros rather than special forms.
1069 *** `kbd' is now a function rather than a macro.
1071 ** Miscellaneous new functions
1073 *** `set-temporary-overlay-map' sets up a temporary keymap that
1074 takes precedence over most other maps for a short while (normally one key).
1076 *** `autoloadp' tests if its argument is an autoloaded object.
1078 *** `autoload-do-load' performs the autoloading operation.
1080 *** `buffer-narrowed-p' tests if the buffer is narrowed.
1082 *** `file-name-base' returns a file name sans directory and extension.
1084 *** `function-get' fetches a function property, following aliases.
1086 *** `posnp' tests if an object is a `posn'.
1088 *** `system-users' returns the user names on the system.
1090 *** `system-groups' returns the group names on the system.
1092 *** `tty-top-frame' returns the topmost frame of a text terminal.
1094 ** The following functions and variables are obsolete:
1095 *** `automount-dir-prefix' (use `directory-abbrev-alist')
1096 *** `buffer-has-markers-at'
1097 *** `macro-declaration-function' (use `macro-declarations-alist')
1098 *** `window-system-version' (provides no useful information)
1099 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
1100 *** `query-replace-interactive'
1101 *** `font-list-limit' (has had no effect since Emacs < 23)
1104 * Changes in Emacs 24.3 on non-free operating systems
1106 ** Cygwin builds can use the native MS Windows user interface.
1107 Pass `--with-w32' to configure. The default remains the X11 interface.
1109 ** Two new functions are available in Cygwin builds:
1110 `cygwin-convert-file-name-from-windows' and
1111 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
1112 code to access the Cygwin file-name mapping machinery to convert
1113 between Cygwin and Windows-native file and directory names.
1115 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
1116 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
1117 `mouse-autoselect-window'.
1119 ** On MS Windows Vista and later Emacs now supports symbolic links.
1121 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
1122 support for libxml2, even if its presence is detected.
1124 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1126 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
1127 directories to the search path. You must add them yourself if you want them.
1130 * Changes in Emacs 24.2
1132 ** This is mainly a bug-fix release.
1135 * Installation Changes in Emacs 24.1
1137 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1138 to configure. Note that other libraries used by Emacs, RSVG and GConf,
1139 also depend on Gtk+. You can disable them with --without-rsvg and
1142 ** Emacs can be compiled with GnuTLS support.
1143 This happens by default if a suitably recent version of the library is
1144 found at build time. To prevent this, use the configure option
1145 `--without-gnutls'. See below for GnuTLS features.
1147 ** Emacs can be compiled with SELinux support.
1148 This happens by default if a suitably recent version of the library is
1149 found at build time. To prevent this, use the configure option
1150 `--without-selinux'. See below for SELinux features.
1152 ** Emacs can be compiled with ImageMagick support.
1153 This happens by default if a suitably recent version of the library is
1154 found at build time. To prevent this, use the configure option
1155 `--without-imagemagick'. See below for ImageMagick features.
1156 This feature is not available for the Nextstep or MS ports.
1158 ** Emacs can be compiled with libxml2 support.
1159 This happens by default if a suitably recent version of the library is
1160 found at build time. To prevent this, use the configure option
1161 `--without-xml2'. See below for libxml2 features.
1163 ** By default, the installed Info and man pages are compressed.
1164 You can disable this by configuring --without-compress-info.
1166 ** New configure option --with-wide-int.
1167 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
1168 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1171 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
1172 These provide no new functionality, they just remove the need to edit
1173 lib-src/Makefile by hand in order to use the associated features.
1175 ** New configure option --enable-use-lisp-union-type.
1176 This is only useful for Emacs developers to debug certain types of bugs.
1177 This is not a new feature; only the configure flag is new.
1179 ** The standalone programs digest-doc and sorted-doc are removed.
1180 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1182 ** The standalone program `fakemail' is removed.
1183 If you need it, feedmail.el provides a superset of the functionality.
1186 * Startup Changes in Emacs 24.1
1188 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
1189 command line arguments, and the EMACS_UNIBYTE environment variable, no
1190 longer have any effect. (They were declared obsolete in Emacs 23.)
1192 ** New command line option `--no-site-lisp' removes site-lisp directories
1193 from load-path. -Q now implies this. This option does not affect the
1194 EMACSLOADPATH environment variable (and hence has no effect for
1198 * Changes in Emacs 24.1
1202 *** Many packages now use the `completion-at-point' command,
1203 rather than implementing separate completion commands.
1205 *** `completion-at-point' now handles tags and semantic completion.
1207 *** Completion in a non-minibuffer now tries to detect the end of completion
1208 and pops down the *Completions* buffer accordingly.
1210 *** New option `completion-cycle-threshold' allows completion cycling.
1212 *** New option `completion-category-overrides' for overriding the
1213 default completion style in certain circumstances.
1215 *** New completion style `substring'.
1217 *** Completion of buffer names uses `substring' completion by default.
1219 *** The option `widget-complete-field' has been removed.
1223 *** The first time you try sending mail, Emacs asks for a mail method.
1224 This is implemented by a new default for `send-mail-function', which
1225 is `sendmail-query-once'. This offers to use the smtpmail package, or
1226 to use the old defaults relying on external mail facilities
1227 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1228 `mailclient-send-it' on Windows).
1230 *** Typing C-c m in the buffer made by M-x report-emacs-bug transfers
1231 the report to your desktop's preferred mail client, if there is one.
1232 This uses either the "xdg-email" utility, or Mac OS's "open" command.
1234 *** See Changes in Specialized Modes and Packages for SMTPmail changes
1235 and Mail mode changes
1237 ** Emacs server and client changes
1239 *** New option `server-port' specifies the port for TCP Emacs servers.
1241 *** New emacsclient argument -q/--quiet suppresses some status messages.
1243 *** New emacsclient argument --frame-parameters specifies the frame
1244 parameters of any newly-created graphical frame.
1246 *** If emacsclient shuts down due to Emacs signaling an error,
1247 its exit status is 1.
1249 *** New emacsclient argument --parent-id ID.
1250 This opens a client frame in parent X window ID, via XEmbed, similar
1251 to the --parent-id argument to Emacs.
1253 ** Internationalization changes
1255 *** Emacs now supports display and editing of bidirectional text.
1256 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1257 displayed in the correct visual order as expected by users of those
1258 scripts. The display reordering is a "full bidirectionality" class
1259 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1260 with no RTL text should look exactly the same as before.
1262 **** New buffer-local variable `bidi-display-reordering'.
1263 To disable display reordering in a buffer, change this to nil.
1265 **** New buffer-local variable `bidi-paragraph-direction'.
1266 If nil (the default), Emacs determines the base direction of each
1267 paragraph from its text, as specified by the UBA. Setting the value
1268 to `right-to-left' or `left-to-right' forces a base direction on each
1271 Paragraphs with right-to-left base direction are displayed starting at
1272 the right window edge.
1274 *** Enhanced support for characters with no glyphs in available fonts,
1275 or, on text terminals, characters that cannot be encoded by the
1276 terminal coding system. The new option `glyphless-char-display-control'
1277 specifies how to display them: as a hexadecimal code in a box, a thin
1278 1-pixel space, an empty box, etc.
1280 *** New input methods for Farsi and Bulgarian
1281 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
1283 *** `nobreak-char-display' now also highlights Unicode hyphen chars
1284 (U+2010 and U+2011).
1286 *** New Hebrew translation of the Emacs Tutorial.
1287 Type `C-u C-h t' to choose it in case your language setup doesn't
1288 automatically select it.
1290 ** An Emacs Lisp package manager is now included.
1291 This is a convenient way to download and install additional packages,
1292 from a package repository at http://elpa.gnu.org.
1294 *** M-x list-packages shows a list of packages, which can be
1295 selected for installation.
1297 *** New command `describe-package', bound to `C-h P'.
1299 *** By default, all installed packages are loaded automatically when
1300 Emacs starts up. To disable this, set `package-enable-at-startup' to
1301 nil. To specify the packages to load, customize `package-load-list'.
1303 ** Custom theme changes
1305 *** New command `M-x customize-themes', which provides a convenient
1306 interface for enabling and disabling Custom themes.
1308 *** New option `custom-theme-load-path' is the load path for themes.
1309 Emacs no longer looks for Custom themes in `load-path'. The default
1310 value of `custom-theme-load-path' says to look for themes in
1311 `custom-theme-directory', followed by a subdirectory of
1312 `data-directory' named "themes/", which contains a small selection of
1313 built-in Custom themes.
1315 *** New option `custom-safe-themes' records known-safe theme files.
1316 If a theme is not in this list, Emacs queries before loading it, and
1317 offers to save the theme to `custom-safe-themes' automatically. By
1318 default, all themes included in Emacs are treated as safe.
1320 ** Improved GTK integration
1322 *** GTK scroll-bars are now placed on the right by default.
1323 The function `set-scroll-bar-mode' can change this.
1325 *** GTK tool bars can have just text, just images or images and text.
1326 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1327 the default is taken from desktop settings.
1329 *** GTK tool bars can be placed on any edge of the frame.
1330 The frame-parameter tool-bar-position controls this. It takes the
1331 values top, left, right or bottom. The Options => Show/Hide menu has
1334 *** The default colors for selected text (the `region' face) are taken
1335 from the GTK theme when Emacs is built with GTK.
1337 *** Emacs uses GTK tooltips by default if built with GTK.
1338 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
1340 ** Graphical interface changes
1342 *** On graphical displays, the mode-line no longer ends in dashes.
1343 Also, the first dash (which does not indicate anything) is just
1344 displayed as a space.
1346 *** `menu-bar-select-buffer-function' lets you choose another operation
1347 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1349 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
1350 built with Xft. These fonts can be set via X resources, for example:
1351 Emacs.pane.menubar.font: Courier-12
1355 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
1356 or if it receives a SIGINT signal in batch mode.
1358 *** `kill-emacs-hook' is now also run in batch mode.
1359 Third-party code which adds to `kill-emacs-hook' should check if they
1360 do the right thing in batch mode.
1362 ** Scrolling changes
1364 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
1365 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
1366 of buffer at first key-press (instead they move to top/bottom of buffer)
1367 when `scroll-error-top-bottom' is non-nil.
1369 *** New option `scroll-error-top-bottom' (see above).
1371 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
1372 scroll a line instead of full screen.
1374 *** New property `scroll-command' should be set on a command's symbol to
1375 define it as a scroll command affected by `scroll-preserve-screen-position'.
1377 *** If you customize `scroll-conservatively' to a value greater than 100,
1378 Emacs will never recenter point in the window when it scrolls due to
1379 cursor motion commands or commands that move point (e.f., `M-g M-g').
1380 Previously, you needed to use `most-positive-fixnum' as the value of
1381 `scroll-conservatively' to achieve the same effect.
1383 *** "Aggressive" scrolling now honors the scroll margins.
1384 If you customize `scroll-up-aggressively' or
1385 `scroll-down-aggressively' and move point off the window, Emacs now
1386 scrolls the window so as to avoid positioning point inside the scroll
1389 ** Basic SELinux support has been added.
1390 This requires Emacs to be linked with libselinux at build time.
1392 *** Emacs preserves the SELinux file context when backing up.
1393 Also, the function `copy-file' has an extra optional argument for
1394 preserving SELinux context, and the return value of `backup-buffer'
1395 now includes the SELinux context.
1397 *** New functions `file-selinux-context' and `set-file-selinux-context'
1398 get and set the SELinux context of a file.
1402 *** `delete-by-moving-to-trash' now only affects commands that specify
1403 trashing. This avoids inadvertently trashing temporary files.
1405 *** Calling `delete-file' or `delete-directory' with a prefix argument
1406 now forces true deletion, regardless of `delete-by-moving-to-trash'.
1408 ** File- and directory-local variable changes
1410 *** You can stop directory local vars from applying to subdirectories.
1411 Add an element (subdirs . nil) to the alist portion of any variables
1412 settings to indicate that the section should not apply to
1415 *** Directory local variables can apply to some file-less buffers.
1416 Affected modes include dired, vc-dir, and log-edit. For example,
1417 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
1418 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
1419 `hack-dir-local-variables-non-file-buffer' to support this.
1421 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
1422 Instead, use "eval: (minor-mode 1)".
1424 *** The variable `inhibit-first-line-modes-regexps' has been renamed
1425 to `inhibit-local-variables-regexps'. As the name suggests, it now
1426 applies to ALL file local variables, not just -*- lines. The
1427 associated `inhibit-first-line-modes-suffixes' has been renamed in the
1432 *** The `quit-window' command now restores the last buffer displayed
1433 in the quitted window.
1435 *** Resizing an Emacs frame now preserves proportional window sizes,
1436 modulo restrictions like window minimum sizes and fixed-size windows.
1438 *** The behavior of `display-buffer' is now customizable in detail.
1440 **** New option `display-buffer-base-action' specifies a list of
1441 user-determined display "actions" (functions and optional arguments
1442 for choosing the displaying window).
1444 This takes precedence over the default display action, which is
1445 specified by `display-buffer-fallback-action'.
1447 **** New option `display-buffer-alist' maps buffer name regexps to
1448 display actions, taking precedence over `display-buffer-base-action'.
1450 *** New option `window-combination-limit'.
1451 The new option `window-combination-limit' allows to return the space
1452 obtained for resizing or creating a window more reliably to the window
1453 from which such space was obtained.
1455 *** New option `window-combination-resize'.
1456 The new option `window-combination-resize' allows to split a window that
1457 otherwise cannot be split because it's too small by stealing space from
1458 other windows in the same combination. Subsequent resizing or deletion
1459 of the window will resize all windows in the same combination as well.
1461 *** New option `frame-auto-hide-function' lets you choose between
1462 iconifying or deleting a frame when burying a buffer in a dedicated
1463 frame, or quitting a window showing a buffer in a frame of its own.
1465 *** New commands `maximize-window' and `minimize-window'.
1466 These maximize and minimize the size of a window within its frame.
1468 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
1469 These functions allow to navigate through the live buffers that have
1470 been shown in a specific window.
1472 ** Minibuffer changes
1474 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
1475 This is handy for minibuffer-only frames, and is also used for the feature
1476 where mouse-1 pops up *Messages*"', which can now easily be changed.
1478 *** Minibuffers set `truncate-lines' to nil.
1479 If you want to change the value to something else, you could use
1480 for example `minibuffer-setup-hook'.
1482 ** `auto-mode-case-fold' is now enabled by default.
1484 ** `backup-by-copying-when-mismatch' now defaults to t.
1486 ** New basic faces `error', `warning', `success'.
1487 These are used to highlight text indicating failure, caution or
1488 successful operation.
1490 ** New option `list-colors-sort' defines the color sort order
1491 for `list-colors-display'.
1493 ** The variable `focus-follows-mouse' now always defaults to nil.
1496 * Editing Changes in Emacs 24.1
1500 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
1501 `isearch-yank-line'.
1503 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
1504 `isearch-yank-kill'.
1506 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
1508 ** New commands `count-words-region' and `count-words'.
1510 *** M-= is bound to `count-words-region', not `count-lines-region'.
1511 The `count-words-region' command, when called interactively, reports
1512 the number of lines, words, and characters in the region. It is a
1513 superset of the old `count-lines-region', which is now an obsolete
1516 ** The command `just-one-space' (M-SPC), if given a negative argument,
1517 also deletes newlines around point.
1521 *** New option `delete-active-region'.
1522 If non-nil, [delete] and DEL delete the region if it is active and no
1523 prefix argument is given. If set to `kill', those commands kill
1526 *** New command `delete-forward-char', bound to [delete].
1527 This is meant for interactive use, and obeys `delete-active-region'.
1528 The command `delete-char' does not obey `delete-active-region'.
1530 *** `delete-backward-char' is now a Lisp function.
1531 Apart from obeying `delete-active-region', its behavior is unchanged.
1532 However, the byte compiler now warns if it is called from Lisp; Lisp
1533 callers should use delete-char with a negative argument instead.
1535 *** The option `mouse-region-delete-keys' has been deleted.
1537 ** Selection changes.
1539 The default handling of clipboard and primary selections has been
1540 changed to conform with modern X applications. In short, most
1541 commands for killing and yanking text now use the clipboard, while
1542 mouse commands use the primary selection.
1544 In the following, we provide a list of these changes, followed by a
1545 list of steps to get the old behavior back if you prefer that.
1547 *** `select-active-regions' now defaults to t.
1548 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
1549 the kill ring. The selected text is put in the primary selection, if
1550 the system possesses a separate primary selection facility (e.g. X).
1552 **** `select-active-regions' also accepts a new value, `only'.
1553 This means to only set the primary selection for temporarily active
1554 regions (usually made by mouse-dragging or shift-selection);
1555 "ordinary" active regions, such as those made with C-SPC followed by
1556 point motion, do not alter the primary selection.
1558 **** `mouse-drag-copy-region' now defaults to nil.
1560 *** mouse-2 is now bound to `mouse-yank-primary'.
1561 This pastes from the primary selection, ignoring the kill-ring.
1562 Previously, mouse-2 was bound to `mouse-yank-at-click'.
1564 *** `x-select-enable-clipboard' now defaults to t on all platforms.
1566 *** `x-select-enable-primary' now defaults to nil.
1567 Thus, commands that kill text or copy it to the kill-ring (such as
1568 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
1570 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
1571 exactly equivalent to M-w, C-w, and C-y respectively.
1573 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
1574 non-nil by default, as Windows does not support the primary selection
1575 between applications.
1577 *** To return to the previous behavior, do the following:
1579 **** Change `select-active-regions' to nil.
1580 **** Change `mouse-drag-copy-region' to t.
1581 **** Change `x-select-enable-primary' to t (on X only).
1582 **** Change `x-select-enable-clipboard' to nil.
1583 **** Bind `mouse-yank-at-click' to mouse-2.
1585 *** Support for X cut buffers has been removed.
1587 *** X clipboard managers are now supported.
1588 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
1590 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
1591 in the current rectangle. With a prefix argument, this prompts for a
1592 number to count from and for a format string.
1594 ** `redisplay-dont-pause' now defaults to t.
1595 This makes Emacs feel more responsive to editing commands that arrive
1596 at high rate, e.g. if you lean on some key, because stopping redisplay
1597 in the middle (when this variable is nil) forces more expensive
1598 updates later on, and Emacs appears to be unable to keep up.
1600 ** The behavior of <TAB> for active regions in Text mode has changed.
1601 In Text and related modes, typing <TAB> (`indent-for-tab-command')
1602 when the region is active causes Emacs to indent all the lines in the
1603 region, aligning them with the line previous to the first line in the
1604 region (or with the left margin if there is no previous line).
1606 ** When `occur' is called with a prefix argument, matching strings are
1607 collected into the `*Occur*' buffer without line numbers. If there
1608 are parenthesized subexpressions in the specified regexp, `occur'
1609 reads replacement text that may contain \\& and \\N whose convention
1610 follows `replace-match'.
1613 * Changes in Specialized Modes and Packages in Emacs 24.1
1615 ** Archive Mode has basic support for browsing and updating 7z archives.
1619 *** BibTeX mode now supports biblatex.
1620 Use the variable `bibtex-dialect' to select different BibTeX dialects.
1621 `bibtex-entry-field-alist' is now an obsolete alias for
1622 `bibtex-BibTeX-entry-alist'.
1624 *** New command `bibtex-search-entries', bound to C-c C-a.
1626 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
1628 *** New variable `bibtex-search-entry-globally'.
1632 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
1634 *** The default browser used by the package is now the "xdg-open" program,
1635 on platforms that support it. This calls your desktop's preferred browser.
1637 ** Calendar, Diary, and Appt
1639 *** Diary entries can contain non-printing "comments".
1640 See the variable `diary-comment-start'.
1642 *** Appointments can specify their individual warning times.
1643 See the variable `appt-warning-time-regexp'.
1645 *** The function specified by `appt-disp-window-function' may be passed
1646 lists of arguments if multiple appointments are due at similar times.
1647 If you are using a custom function for this, you should update it.
1649 *** New function `diary-hebrew-birthday'.
1651 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
1652 may no longer be nil, but must all be strings.
1654 *** The obsolete (since Emacs 22.1) method of enabling the appt
1655 package by adding `appt-make-list' to `diary-hook' has been removed.
1656 Use `appt-activate' instead.
1658 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
1659 appt-issue-message (use the function appt-activate)
1660 appt-visible/appt-msg-window (use the variable appt-display-format)
1662 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
1663 view-diary-entries, list-diary-entries, show-all-diary-entries
1667 *** New feature to "guess" the style in an existing buffer.
1668 The main entry point is M-x c-guess.
1670 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
1672 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
1673 Thus C-M-a will, by default, go to the beginning of the immediate function,
1676 *** "Macros with semicolons" can be registered for correct indentation.
1677 Where such a macro ends a line (no semicolon) the next statement is no longer
1678 parsed as a statement continuation.
1680 ** Comint and modes derived from it use the standard completion code.
1684 *** Compilation mode can be used without Font Lock mode.
1685 `compilation-parse-errors-function' is now obsolete.
1687 *** New variable `compilation-filter-start', which is bound while
1688 `compilation-filter-hook' runs. It records the start position of the
1689 text inserted by `compilation-filter'.
1691 *** `compilation-error-screen-columns' and `compilation-first-column'
1692 are obeyed in the editing buffer. So programming language modes can
1693 set them, whereas previously only the value in the *Compilation*
1698 *** Customize buffers now contain a search field.
1699 The search is performed using `customize-apropos'.
1700 To turn off the search field, set `custom-search-field' to nil.
1702 *** Options in customize group buffers start out hidden if not customized.
1703 Use the arrow to the left of the option name to toggle visibility.
1705 *** custom-buffer-sort-alphabetically now defaults to t.
1707 *** The color widget now has a "Choose" button, which allows you to
1708 choose a color via `list-colors-display'.
1712 *** It is now possible to access buses other than the default system
1715 *** The `dbus-register-method' and `dbus-register-property' functions
1716 optionally do not register names.
1718 *** The new function `dbus-register-service' registers a known service
1719 name on a D-Bus without also registering a property or a method.
1723 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
1724 if called with a prefix argument, read a file name from the minibuffer
1725 instead of using the current buffer.
1727 *** The "dired local variables" feature of Dired-x is obsolete.
1728 The standard directory local variables feature replaces it.
1732 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
1733 controlling attempts to autojoin a channel.
1735 *** New variable `erc-coding-system-precedence': If we use `undecided'
1736 as the server coding system, this variable will then be consulted.
1737 The default is to decode strings that can be decoded as utf-8 as
1738 utf-8, and do the normal `undecided' decoding for the rest.
1742 *** The default value of `eshell-directory-name' has changed
1743 to be an "eshell" directory in `user-emacs-directory'.
1744 The old "~/.eshell/" directory is still used if it exists, though.
1748 *** The M-x gdb command now uses the GDB Machine Interface protocol.
1749 It now supports multithread non-stop debugging and simultaneous
1750 debugging of several threads.
1754 *** RET (`image-toggle-animation') toggles animation, if applicable.
1755 Animation plays once, unless the option `image-animate-loop' is non-nil.
1759 *** New command M-x info-display-manual displays a named Info manual.
1760 If that manual is already visited in some Info buffer, it displays
1761 that buffer. (This is handy if you have many manuals in many *info*
1762 buffers, and don't remember the name of the buffer visiting the manual
1763 you want to consult.) Otherwise, it loads and displays the manual.
1765 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
1766 This is for compatibility with the stand-alone Info reader program,
1767 and also because `Info-edit' is a rarely used command that is disabled
1770 ** Mail mode changes (not Message mode)
1772 *** New command M-x mail-add-attachment for adding MIME attachments
1774 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
1775 (Its name is misleading, since it has nothing to do with MIME
1776 attachments.) The old name is now an obsolete alias to the new name.
1778 ** MH-E has been updated to MH-E version 8.3.1.
1779 See MH-E-NEWS for details.
1781 ** Modula-2 mode provides auto-indentation.
1783 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
1785 ** nXML mode no longer binds C-RET to `nxml-complete'.
1786 Completion is now performed via `completion-at-point', bound to C-M-i
1787 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
1788 default), this performs tag completion.
1790 ** Org mode has been updated to version 7.8.09.
1791 See ORG-NEWS for details.
1793 ** Prolog mode has been completely revamped, with lots of additional
1794 functionality such as more intelligent indentation, electricity,
1795 support for more variants, including Mercury, and a lot more.
1799 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
1800 in the Rmail incoming message.
1802 *** The variable `rmail-message-filter' no longer has any effect.
1803 This change was made in Emacs 23.1 but was not advertised at the time.
1804 Try using `rmail-show-message-hook' instead.
1808 *** M-x shell prompts for the shell path name if the default directory
1809 is a remote file name and neither the environment variable $ESHELL nor
1810 the variable `explicit-shell-file-name' is set.
1812 *** TAB is now bound to the standard `completion-at-point' command,
1813 which now implements the pcomplete rules for shell command completion.
1817 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
1818 if the mail server supports them. This uses either built-in GnuTLS
1819 support, or the starttls.el library. Customize `smtpmail-stream-type'
1822 *** The variable `smtpmail-auth-credentials' has been removed.
1823 By default, the information is now stored in the file ~/.authinfo.
1824 This was the default value of smtpmail-auth-credentials. If you had
1825 customized smtpmail-auth-credentials to a list of user names and
1826 passwords, those settings are not used. During your first connection
1827 to the smtp server, Emacs will prompt for the user name and password,
1828 and offer to save them to ~/.authinfo. Or you can manually copy the
1829 credentials to ~/.authinfo. For example, if you had
1831 (setq smtpmail-auth-credentials
1832 '(("mail.example.org" 25 "jim" "s!cret")))
1834 then the equivalent line in ~/.authinfo would be
1836 machine mail.example.org port 25 login jim password s!cret
1838 See the auth-source manual for more information, e.g. on encrypting
1839 the credentials file.
1841 *** The variable `smtpmail-starttls-credentials' has been removed.
1842 If you had that set, you need to put
1844 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
1846 in your ~/.authinfo file instead.
1848 *** SMTPmail defaults to using the address in the From: header as the
1849 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
1850 to the address you wish to use instead.
1854 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
1855 and `sql-oracle-scan-on'.
1857 *** New options controlling prompting for login parameters.
1858 Each supported product has a custom variable `sql-*-login-params',
1859 which is a list of the parameters to be prompted for before a
1860 connection is established.
1862 *** The command `sql-product-interactive' now takes a prefix argument,
1863 which causes it to prompt for an SQL product.
1865 *** Product-specific SQL interactive commands now take prefix arguments.
1866 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
1867 given a prefix argument, prompt for a name for the SQL interactive
1868 buffer. This reduces the need for calling `sql-rename-buffer'.
1870 *** SQL interactive modes suppress command continuation prompts, and
1871 replace tabs with spaces. The first change impacts multiple line SQL
1872 statements entered with C-j between each line, statements yanked into
1873 the buffer and statements sent with `sql-send-*' functions. The
1874 second prevents the MySQL and Postgres interpreters from listing
1875 object name completions when sent text via `sql-send-*' functions.
1877 *** New command `sql-connect' starts a predefined SQLi session,
1878 using the login parameters from `sql-connection-alist'.
1880 *** New "Save Connection" menu item in SQLi buffers.
1881 This gathers the login params specified for the SQLi session, if it
1882 was not started by a connection, and saves them as a new connection.
1884 *** New commands for listing database objects and details:
1885 sql-list-all and sql-list-table.
1887 *** An API for manipulating SQL product definitions has been added.
1891 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
1895 *** New inline access method "ksu" (kerberized su).
1897 *** The following access methods are discontinued: "ssh1_old",
1898 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
1900 *** The user option `remote-file-name-inhibit-cache' controls whether
1901 remote file attributes are cached for better performance.
1903 *** The option `ange-ftp-binary-file-name-regexp' has changed its
1904 default value to "".
1906 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
1907 for remote machines which support SELinux.
1909 ** New function `url-queue-retrieve', which behaves like url-retrieve,
1910 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
1911 the degree of parallelism.
1913 ** VC and related modes
1915 *** Support for pulling on distributed version control systems.
1916 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
1917 supported (currently with Bzr, Git, and Mercurial), to update the
1918 current branch and working tree. A prefix argument means to prompt
1919 the user for specifics, e.g. a pull location.
1921 *** `vc-update' is now an alias for `vc-pull'.
1923 *** Support for merging on distributed version control systems.
1924 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
1925 is supported (currently with Bzr, Git, and Mercurial), to merge
1926 changes from another branch into the current one. It prompts for
1927 specifics, e.g. a merge source.
1929 *** New option `vc-revert-show-diff' controls whether `vc-revert'
1930 shows a diff while querying the user. It defaults to t.
1932 *** Log entries in some Log View buffers can be toggled to display a
1933 longer description by typing RET (log-view-toggle-entry-display).
1934 This is currently supported for Bzr, Git, and Mercurial (to support
1935 another backend, define a `log-view-expanded-log-entry-function').
1936 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
1937 use this to display the full log entry for the revision at point.
1939 *** New command `vc-ediff' allows visual comparison of two revisions
1940 of a file similar to `vc-diff', but using ediff backend.
1942 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
1943 this was not advertised at the time.
1945 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
1946 Since Emacs 23, it has done the same thing as `toggle-read-only', but
1947 this was not advertised at the time.
1953 *** erc-hecomplete.el (use erc-pcomplete.el instead)
1955 *** partial-completion-mode (complete.el) is obsolete.
1956 You can get a comparable behavior with:
1957 (setq completion-styles '(partial-completion initials))
1958 (setq completion-pcm-complete-word-inserts-delimiters t)
1960 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
1962 *** pgg is obsolete (use EasyPG instead).
1964 *** sregex.el is obsolete, since rx.el is a strict superset.
1966 *** s-region.el and pc-select.el are obsolete.
1967 They are superseded by shift-select-mode, enabled by default since 23.1.
1969 *** vc-mcvs.el is obsolete (for lack of a maintainer).
1973 *** The Landmark game is now invoked with `landmark', not `lm'.
1974 Its functions and variables have been similarly renamed.
1976 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
1977 (This interfered with cua-mode.)
1979 *** f90.el has some support for Fortran 2008 syntax.
1981 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
1983 *** New command `nato-region' converts text to NATO phonetic alphabet.
1986 * New Modes and Packages in Emacs 24.1
1988 ** Occur Edit mode applies edits made in *Occur* buffers to the
1989 original buffers. It is bound to "e" in Occur mode.
1991 ** New global minor mode electric-pair-mode.
1992 When enabled, typing an open parenthesis automatically inserts the
1993 matching closing one.
1995 ** New global minor mode electric-indent-mode.
1996 When enabled, typing certain characters triggers reindentation.
1997 Major modes wishing to use this can set electric-indent-chars or
1998 electric-indent-functions.
2000 ** New global minor mode electric-layout-mode.
2001 When enabled, typing certain characters automatically inserts newlines.
2002 Major modes wishing to use this can set electric-layout-rules.
2004 ** tabulated-list.el provides a generic major mode for tabulated data,
2005 from which other modes can be derived.
2007 ** pcase.el provides the ML-style pattern matching macro `pcase'.
2009 ** secrets.el is an implementation of the Secret Service API, an
2010 interface to password managers like GNOME Keyring or KDE Wallet. The
2011 Secret Service API requires D-Bus for communication. The command
2012 `secrets-show-secrets' offers a buffer with a visualization of the
2015 ** notifications.el provides an implementation of the Desktop
2016 Notifications API. It requires D-Bus for communication.
2018 ** soap-client.el supports access to SOAP web services from Emacs.
2019 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2021 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
2023 ** New emacs-lock.el package.
2024 The previous version has been moved to obsolete/old-emacs-lock.el.
2025 Now, there is a proper minor mode `emacs-lock-mode'. Protection
2026 against exiting Emacs and killing the buffer can be set separately.
2027 The mechanism for automatically turning off protection for buffers
2028 with dead inferior processes has been generalized.
2031 * Incompatible Lisp Changes in Emacs 24.1
2033 ** Passing a nil argument to a minor mode function call now ENABLES
2034 the minor mode unconditionally. This is so that you can write e.g.
2036 (add-hook 'text-mode-hook 'foo-mode)
2038 to enable foo-mode in Text mode buffers, removing the need for
2039 `turn-on-foo-mode' style functions. This affects all mode commands
2040 defined by `define-minor-mode'. If called interactively, the mode
2041 command still toggles the minor mode.
2043 ** The return value of `backup-buffer' has changed.
2044 It is now a list of three elements, where the second element is a list
2045 describing the original file's SELinux context. If Emacs or the
2046 system lacks SELinux support, the context list is (nil nil nil nil).
2047 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
2049 ** `char-direction-table' and the `char-direction' function were deleted.
2050 They were buggy and inferior to the new support of bidirectional
2051 editing introduced in Emacs 24. If you need the bidirectional
2052 properties of a character, use `get-char-code-property' with the last
2053 argument `bidi-class'.
2055 ** `copy-directory' now copies the source directory as a subdirectory
2056 of the target directory, if the latter is an existing directory. The
2057 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2058 the contents directly into a pre-existing target directory.
2060 ** For mouse click input events in the text area, the Y pixel
2061 coordinate in the POSITION list now counts from the top of the text
2062 area, excluding any header line. Previously, it counted from the top
2065 ** Support for "old-style" backquotes, obsolete for 10+ years, has
2066 been further reduced. Now a backquote not followed by a space is
2067 always treated as a "new-style" backquote. Please remove all
2068 "old-style" backquotes from your code. If your code uses backquotes
2069 as documented in the Elisp manual, and compiles without warning, then
2070 you have nothing to do in this regard. Code not following the
2071 appropriate conventions may fail to compile.
2073 The most common cause of trouble seems to be an old-style backquote
2074 followed by a newline. Another cause of trouble is vector notation
2075 for key sequence notation: instead of [(control ,)] and [(control ')],
2076 you should write [(control ?,)] and [(control ?')], which will work in
2079 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2080 was not advertised at the time. The function `custom-initialize-delay'
2081 replaced all known uses.
2083 ** `view-buffer' now treats special mode-class in the same way that
2084 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2085 major mode is special).
2087 ** Menu and tool bar changes
2089 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
2090 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2091 With these alist entries omitted, `make-frame' checks the value of the
2092 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2093 a menu-bar or tool-bar, respectively. If the alist entries are added,
2094 they override the value of `menu-bar-mode'/`tool-bar-mode'.
2096 *** The menu bar bindings's caches are not used any more.
2097 Use (where-is-internal <def> nil t) instead.
2099 ** Regions created by mouse dragging are now normal active regions,
2100 similar to those created by shift-selection (see Selection changes
2101 above). In previous Emacs versions, these regions were delineated by
2102 `mouse-drag-overlay'; that variable has been removed.
2104 ** The fourth argument of `filter-buffer-substring' has been removed.
2105 If you want to remove text properties from the final result, simply
2106 pass the result through substring-no-properties.
2108 ** cl.el no longer provides `cl-19'.
2110 ** The following obsolete functions and aliases have been removed
2111 (the appropriate new function is given in parentheses; "not needed"
2112 means you can just remove all calls to the function in question):
2114 *** `comint-kill-output' (`comint-delete-output')
2115 *** `decompose-composite-char' (`char-to-string')
2116 *** `outline-visible' (`outline-invisible-p')
2117 *** `internal-find-face' (`facep')
2118 *** `internal-get-face' (`facep and check-face')
2119 *** `frame-update-faces' (not needed)
2120 *** `frame-update-face-colors' (`frame-set-background-mode')
2121 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2122 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
2123 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2124 *** `x-make-font-bold-italic' (`make-face-bold-italic')
2125 *** `x-make-font-unbold' (`make-face-unbold')
2126 *** `x-make-font-unitalic' (`make-face-unitalic')
2127 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2128 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2129 *** `iswitchb-default-keybindings' (`iswitchb-mode')
2130 *** `char-bytes' (== 1)
2131 *** `isearch-return-char' (`isearch-printing-char')
2132 *** `make-local-hook' (not needed)
2133 *** `set-screen-height' (`set-frame-height')
2134 *** `set-screen-width' (`set-frame-width')
2136 ** The following obsolete variables and varaliases have been removed
2137 (the appropriate new variable is given in parentheses):
2139 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2140 *** `vc-header-alist' (`vc-BACKEND-header')
2141 *** `directory-sep-char' (== ?/)
2142 *** `font-lock-defaults-alist' (`font-lock-defaults')
2143 *** `e' (`float-e').
2145 ** The following obsolete files were removed:
2146 sc.el, x-menu.el, rnews.el, rnewspost.el
2148 ** The format of the finder-inf.el file has changed, since the Finder
2149 mechanism is now based on the package system. The variable
2150 `finder-package-info' is replaced by `package--builtins' and
2151 `finder-keywords-hash'.
2153 ** When generating autoloads, `update-directory-autoloads' no longer
2154 assumes every inspected file is in your `load-path'. It instead
2155 generates relative names according to the current `load-path'.
2158 * Lisp changes in Emacs 24.1
2160 ** Code can now use lexical scoping by default instead of dynamic scoping.
2161 The `lexical-binding' variable enables lexical scoping for local
2162 variables. It is typically set via a file-local variable in the first
2163 line of the file, in which case it applies to all the code in that
2166 *** `eval' takes a new optional argument `lexical' to choose the new lexical
2167 binding instead of the old dynamic binding mode.
2169 *** Lexically scoped interpreted functions are represented with a new form
2170 of function value which looks like (closure ENV ARGS &rest BODY).
2172 *** New macro `letrec' to define recursive local functions.
2174 *** `defvar' and `defconst' now mark the variable as special (dynamic).
2175 So do `defcustom' and other forms that call `defvar' as a subroutine.
2177 *** New function `special-variable-p' to check whether a variable is
2178 declared as dynamically bound.
2180 *** The form ((lambda ...) ...) is deprecated.
2182 ** An Emacs Lisp testing tool is now included.
2183 Emacs Lisp developers can use this tool to write automated tests for
2184 their code. See the ERT info manual for details.
2186 ** Changes for bidirectional display and editing
2188 *** New function `current-bidi-paragraph-direction'.
2189 This returns the base direction of the paragraph at point.
2191 *** New function `bidi-string-mark-left-to-right'.
2192 Given a string containing characters from right-to-left scripts, this
2193 function returns another string which can be safely inserted into a
2194 buffer, such that any following text will be always displayed to the
2195 right of that string. (This works by appending an invisible Unicode
2196 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
2198 This is useful when the buffer has overall left-to-right paragraph
2199 direction and you need to insert a string whose contents are not known
2200 in advance, without disrupting the layout of the line.
2204 *** Window tree functions are accessible in Elisp.
2205 Functions are provided to return the parent, siblings or child windows
2206 of any window including internal windows (windows not associated with a
2207 buffer) in the window tree.
2209 **** New function `window-valid-p' gives non-nil for live and internal
2212 **** Window manipulation can deal with internal windows.
2213 Many window handling functions like `split-window', `delete-window', or
2214 `delete-other-windows' as well as the window resizing functions can now
2215 act on any window including internal ones.
2217 *** window-total-height/-width vs window-body-height/-width.
2218 The function `window-height' has been renamed to `window-total-height'
2219 and `window-width' has been renamed to `window-body-width'. The old
2220 names are provided as aliases. Two new functions `window-total-width'
2221 and `window-body-height' are provided.
2223 *** Window parameters specific to window handling functions.
2224 For each window you can specify a parameter to override the default
2225 behavior of a number of functions like `split-window', `delete-window'
2226 and `delete-other-windows'. The variable `ignore-window-parameters'
2227 allows to ignore processing such parameters.
2229 *** New semantics of third argument of `split-window'.
2230 The third argument of `split-window' has been renamed to SIDE and can be
2231 set to any of the values 'below, 'right, 'above, or 'left to make the
2232 new window appear on the corresponding side of the window that shall be
2233 split. Any other value of SIDE will cause `split-window' to split the
2234 window into two side-by-side windows as before.
2236 *** Window resizing functions.
2237 A new standard function for resizing windows called `window-resize' has
2238 been introduced. This and all other functions for resizing windows no
2239 longer delete any windows when they become too small.
2241 *** Deleting the selected window now selects the most recently selected
2242 live window on that frame instead.
2244 *** `adjust-window-trailing-edge' adjustments.
2245 `adjust-window-trailing-edge' can now deal with fixed-size windows and
2246 is able to resize other windows if a window adjacent to the trailing
2247 edge cannot be shrunk any more. This makes its behavior more similar to
2248 that of Emacs 21 without compromising, however, its inability to delete
2249 windows which was introduced in Emacs 22.
2251 *** Window-local buffer lists.
2252 Windows now have local buffer lists. This means that removing a buffer
2253 from display in a window will preferably show the buffer previously
2254 shown in that window with its previous window-start and window-point
2255 positions. This also means that the same buffer may be automatically
2256 shown twice even if it already appears in another window.
2258 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2259 which if non-nil requires the buffer to be displayed in the currently
2260 selected window, signaling an error otherwise. If nil, another window
2261 can be used, e.g. if the selected one is strongly dedicated.
2263 *** `split-window-vertically' and `split-window-horizontally' renamed
2264 to `split-window-below' and `split-window-right' respectively.
2265 The old names are kept as aliases.
2269 **** The second arg to `display-buffer' and `pop-to-buffer' is now
2270 named ACTION, and takes a display action of the same form as
2271 `display-buffer-base-action' (see Changes, above). A non-nil,
2272 non-list value is treated specially, as the old meaning.
2274 **** New variable `display-buffer-overriding-action'.
2276 **** The procedure of `display-buffer' etc. to choose a window is
2277 determined by combining `display-buffer-overriding-action',
2278 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2279 and `display-buffer-fallback-action'. The second and fourth of these
2280 are user-customizable variables.
2282 See the docstring of `display-buffer' for details.
2284 *** New functions `window-state-get' and `window-state-put'.
2285 These functions allow to save and restore the state of an arbitrary
2286 frame or window as an Elisp object.
2290 *** New variable `completion-extra-properties' used to specify extra
2291 properties of the current completion:
2292 - :annotate-function, same as the old completion-annotate-function.
2293 - :exit-function, function to call after completion took place.
2295 *** Functions on `completion-at-point-functions' can return any of the
2296 properties valid for `completion-extra-properties'.
2298 *** `completion-annotate-function' is obsolete.
2300 *** New `metadata' method for completion tables. The metadata thus returned
2301 can specify various details of the data returned by `all-completions':
2302 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2303 used to select a style in completion-category-overrides.
2304 - `annotation-function' to add annotations in *Completions*.
2305 - `display-sort-function' to specify how to sort entries in *Completions*.
2306 - `cycle-sort-function' to specify how to sort entries when cycling.
2308 *** `minibuffer-local-filename-must-match-map' is not used any more.
2309 Instead, the bindings in `minibuffer-local-filename-completion-map'
2310 are combined with `minibuffer-local-must-match-map'.
2312 *** New variable `completing-read-function' allows overriding the
2313 behavior of `completing-read'.
2315 ** `glyphless-char-display' can now distinguish between graphical and
2316 text terminal display, via a char-table entry that is a cons cell.
2318 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
2319 Instead, the offending function is removed.
2323 *** New function `run-hook-wrapped' for running an abnormal hook by
2324 passing the hook functions as arguments to a "wrapping" function.
2325 Like `run-hook-with-args-until-success', it stops at the first
2326 non-nil return value.
2328 *** New macro `with-wrapper-hook' for running an abnormal hook as a
2329 set of "wrapping" filters, similar to around advice.
2330 (A version of this macro was actually added in Emacs 23.2 but was not
2331 advertised at the time.)
2335 *** New macro `condition-case-unless-debug' (this was actually added in
2336 Emacs 23.1 as condition-case-no-debug, but not advertised)
2338 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
2340 *** Variable `stack-trace-on-error' removed.
2342 *** The debugger can now "continue" from an error, which means it will
2343 jump to the error handler as if the debugger had not been invoked
2344 instead of jumping all the way to the top-level.
2346 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2347 This can be useful when `inhibit-quit' is set.
2349 ** The new function `server-eval-at' allows evaluation of Lisp forms on
2350 named Emacs server instances.
2352 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
2353 to redirect STDOUT to a file.
2355 ** The function `format-time-string' now supports the %N directive,
2356 for higher-resolution time stamps.
2358 ** New input reading functions
2360 *** New function `read-char-choice' reads a restricted set of
2361 characters, discarding any inputs not inside the set.
2363 *** The command `read-color' now requires a match for a color name
2364 or RGB triplet, instead of signaling an error if the user provides
2367 **** `facemenu-read-color' is now an alias for `read-color'.
2369 ** `image-library-alist' is renamed to `dynamic-library-alist'.
2370 The variable is now used to load all kind of supported dynamic libraries,
2371 not just image libraries. The previous name is still available as an
2374 ** Syntax parsing changes
2376 *** New variable `syntax-propertize-function'.
2377 This replaces `font-lock-syntactic-keywords' which is now obsolete.
2378 This allows syntax-table properties to be set independently from font-lock:
2379 just call syntax-propertize to make sure the text is propertized.
2380 Together with this new variable come a new hook
2381 syntax-propertize-extend-region-functions, as well as two helper functions:
2382 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
2383 as-is; and syntax-propertize-rules which provides a new way to specify
2386 *** Syntax tables support a new "comment style c" additionally to style b.
2388 ** New hook `post-self-insert-hook', run after `self-insert-command'.
2390 ** frame-local variables cannot be let-bound any more.
2392 ** Major and minor mode changes
2394 *** `set-auto-mode' now respects mode: local variables at the end of files,
2395 as well as those in the -*- line.
2397 *** `prog-mode' is a new major mode from which programming modes
2400 **** `prog-mode-hook' can be used to enable features for programming
2401 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
2402 on-the-fly spell checking for comments and strings.
2404 *** New hook `change-major-mode-after-body-hook', run by
2405 `run-mode-hooks' just before any other mode hooks.
2407 *** Enabled globalized minor modes can be disabled in specific major modes.
2408 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
2409 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
2411 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
2413 ** File-handling changes
2415 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
2416 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
2417 both non-nil. Interactively, TRASH defaults to t, unless a prefix
2418 argument is supplied (see Trash changes, above).
2420 *** New file predicates: `file-equal-p', `file-in-directory-p'.
2422 ** Tool-bars can display separators.
2423 Tool-bar separators are handled like menu separators in menu-bar maps,
2424 i.e. via menu entries of the form `(menu-item "--")'.
2428 *** Animated images support (currently animated gifs only).
2430 **** `image-animated-p' returns non-nil if an image can be animated.
2432 **** `image-animate' animates a supplied image spec.
2434 **** `image-animate-timer' returns the timer object for an image that
2437 *** `image-extension-data' has been renamed to `image-metadata'.
2438 The old name is an obsolete alias to the new one.
2440 *** Image mode can view any image type that ImageMagick supports.
2441 This requires Emacs to be built with ImageMagick support.
2443 **** New function `imagemagick-types', defined if ImageMagick support
2444 is enabled, returns a list of image file extensions that your
2445 ImageMagick installation supports.
2447 **** New function `imagemagick-register-types' enables ImageMagick
2448 image types in Image mode and in `create-image' and other helper
2451 **** New option `imagemagick-types-inhibit' excludes certain
2452 ImageMagick image types from `imagemagick-register-types'.
2454 **** With ImageMagick support, there are extra Image mode commands to
2455 resize and rotate images: `image-transform-fit-to-height',
2456 `image-transform-fit-to-width', `image-transform-set-rotation', and
2457 `image-transform-set-scale'.
2459 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
2460 passes it to the mail user agent function. This argument specifies an
2461 action for returning to the caller after finishing with the mail. For
2462 example, this is used by Rmail to optionally delete a mail window.
2464 ** XML and HTML parsing
2465 If Emacs is compiled with libxml2 support, there are two new
2466 functions: `libxml-parse-html-region' (which parses "real world" HTML)
2467 and `libxml-parse-xml-region' (which parses XML). Both return an
2468 Emacs Lisp parse tree.
2470 ** Networking and encryption changes
2472 *** `open-network-stream' can now be used to open an encrypted stream.
2473 It now accepts an optional `:type' parameter for initiating a TLS
2474 connection, directly or via STARTTLS. To do STARTTLS, additional
2475 parameters (`:end-of-command', `:success', `:capabilities-command')
2476 must also be supplied.
2478 *** New library gnutls.el.
2479 The new function `gnutls-available-p' returns non-nil if Emacs is
2480 built with GnuTLS support. The main entry points are
2481 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
2482 these functions through `open-network-stream', because that can
2483 upgrade connections through STARTTLS opportunistically or use plain
2484 SSL, depending on your needs. For debugging, set `gnutls-log-level'
2487 *** New primitive `secure-hash' that supports many secure hash algorithms:
2488 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
2489 sha1.el has been removed. The `sha1' feature is provided by default.
2493 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
2495 ** Progress reporters can now "spin".
2496 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
2497 now be nil, or omitted. This makes a "non-numeric" reporter. Each
2498 time you call `progress-reporter-update' on that progress reporter,
2499 with a nil or omitted VALUE argument, the reporter message is
2500 displayed with a "spinning bar".
2502 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
2503 being reverted, even if the buffer has a local `revert-buffer-function'.
2505 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
2506 If delayed-warnings-list is non-nil, the command loop calls
2507 `delayed-warnings-hook' after `post-command-hook'. At present, this
2508 is only used by Emacs on some platforms to display warnings during
2509 startup, which might otherwise not be noticed. This uses the
2510 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
2512 ** rx.el has a new `group-n' construct for explicitly numbered groups.
2514 ** New function `make-composed-keymap' that constructs a new keymap
2515 from multiple input maps. You can use this to make a keymap that
2516 inherits from multiple maps, eg:
2517 (set-keymap-parent newmap (make-composed-keymap othermap parent))
2519 ** New function `string-prefix-p'.
2520 (This was actually added in Emacs 23.2 but was not advertised at the time.)
2522 ** New reader macro ## that stands for the empty symbol.
2523 This means that the empty symbol can now be read back. Also, #: by itself
2524 (when not immediately followed by a possible symbol character) stands for
2525 an empty uninterned symbol.
2527 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
2529 ** The following functions and variables are obsolete:
2531 *** `tooltip-use-echo-area' is obsolete.
2532 Rather than setting this to t, disable Tooltip mode instead.
2534 *** buffer-substring-filters is obsolete.
2535 Use `filter-buffer-substring-functions' instead.
2537 *** `byte-compile-disable-print-circle' is obsolete.
2539 *** `deferred-action-list' and `deferred-action-function' are obsolete.
2540 Use `post-command-hook' instead.
2542 *** `font-lock-maximum-size' is obsolete.
2545 * Changes in Emacs 24.1 on non-free operating systems
2547 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
2548 and also when HOME is set to C:\ by default.
2550 ** New configure.bat options
2552 *** --enable-checking builds Emacs with extra runtime checks.
2554 *** --distfiles specifies files to be included in binary distribution.
2556 *** --without-gnutls disables automatic GnuTLS detection.
2558 *** --lib for general library linkage, works with the USER_LIBS build variable.
2560 ** New make target `dist' to create binary distribution for MS Windows.
2562 ** The Lisp function `w32-default-color-map' is now obsolete.
2563 (It is only used internally in the Emacs C code.)
2565 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
2566 reappear on mouse-over. (Requires OS X 10.6 or later.)
2568 ** On Mac OS X, dragging a file into Emacs visits the file, like on
2569 other platforms, rather than inserting its contents into the buffer.
2572 ----------------------------------------------------------------------
2573 This file is part of GNU Emacs.
2575 GNU Emacs is free software: you can redistribute it and/or modify
2576 it under the terms of the GNU General Public License as published by
2577 the Free Software Foundation, either version 3 of the License, or
2578 (at your option) any later version.
2580 GNU Emacs is distributed in the hope that it will be useful,
2581 but WITHOUT ANY WARRANTY; without even the implied warranty of
2582 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2583 GNU General Public License for more details.
2585 You should have received a copy of the GNU General Public License
2586 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2591 paragraph-separate: "[
\f]*$"