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 all necessary updates to the manuals in doc/ are complete.
19 --- means no change in the manuals is needed.
20 When you add a new item, use the appropriate mark if you know it applies,
21 otherwise leave it unmarked.
24 * Installation Changes in Emacs 24.4
26 ** Emacs can be compiled with 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 `--disable-acl'.
31 ** Emacs can be compiled with file notification support.
32 This happens by default if a suitable system library is found at
33 build time. To prevent this, use the configure option
34 `--with-file-notification-no'. See below for file-notify features.
35 FIXME? This feature is not available for the Nextstep port. (?)
37 ** The configure option --with-crt-dir has been removed.
38 It is no longer needed, as the crt*.o files are no longer linked
41 ** Directories passed to configure option `--enable-locallisppath' are
42 no longer created during installation.
45 ** Emacs for NS (OSX, GNUStep) can be built with ImageMagick support.
46 pkg-config is required to find ImageMagick libraries.
49 * Startup Changes in Emacs 24.4
52 * Changes in Emacs 24.4
54 ** Key ? also describes prefix bindings like C-h.
57 ** `apropos-variable' is now `apropos-user-option'
58 `apropos-user-option' shows all user options while `apropos-variable'
59 shows all variables. When called with a universal prefix argument,
60 the two commands swap their behaviors. When `apropos-do-all' is
61 non-nil, they output the same results.
64 ** `eval-defun' on an already defined defcustom calls the :set function,
67 ** If the new variable `enable-dir-local-variables' is nil,
68 directory local variables are ignored. May be useful for some modes
69 that want to ignore directory-locals while still respecting file-locals.
71 ** The option `set-mark-default-inactive' has been deleted.
72 This unfinished feature was introduced by accident in Emacs 23.1;
73 simply disabling Transient Mark mode does the same thing.
75 ** `initial-buffer-choice' can now specify a function to set up the
78 ** `remember-notes' creates a buffer whose content is saved on kill-emacs.
79 You may think of it as a *scratch* buffer whose content is preserved.
80 In fact, it was designed as a replacement for *scratch* buffer and can
81 be used that way by setting `initial-buffer-choice' to `remember-notes'
82 and `remember-notes-buffer-name' to "*scratch*". Without the second
83 change, *scratch* buffer will still be there for notes that do not
86 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
88 ** ACL support has been added.
90 *** Emacs preserves the ACL entries of files when backing up.
92 *** New functions `file-acl' and `set-file-acl' get and set the ACL
93 entries of a file. On GNU/Linux, the POSIX ACL interface is used via
94 libacl. On MS-Windows, the NT Security APIs are used to emulate the
97 ** New option `scroll-bar-adjust-thumb-portion'.
98 Available only on X, this option allows to control over-scrolling
99 using the scroll bar (i.e. dragging the thumb down even when the end
100 of the buffer is visible).
102 ** New function `add-face-text-property' has been added, which can be
103 used to conveniently prepend/append new face attributes to text.
105 ** In compiled Lisp files, the header no longer includes a timestamp.
107 ** Multi-monitor support has been added.
109 *** New functions `display-monitor-attributes-list' and
110 `frame-monitor-attributes' can be used to obtain information about
111 each physical monitor on multi-monitor setups.
113 *** The functions `display-pixel-width' and `display-pixel-height' now
114 behave consistently among the platforms: they return the pixel width
115 or height for all physical monitors associated with the given display
116 as just they were on X11. To get information for each physical
117 monitor, use the new functions above. Similar notes also apply to
118 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
119 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
121 ** New macro `alternatives-define' can be used to define generic commands.
122 Generic commands are interactive functions whose implementation can be
123 selected among several alternatives, as a matter of user preference.
125 ** The blink cursor stops blinking after 10 blinks (default) on X and NS.
126 You can change the default by customizing the variable blink-cursor-blinks.
127 Also timers for blinking are stopped when no blinking is done, so Emacs does
128 not consume CPU cycles.
131 * Editing Changes in Emacs 24.4
133 ** `split-window' is no longer a command, just a non-interactive function.
134 As a command it was a special case of `split-window-below', and as such
135 superfluous. After being reimplemented in Lisp, its interactive form
136 was mistakenly retained.
138 ** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
139 bound to <f11> and M-<f10>, respectively.
141 ** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
145 ** New option `visual-order-cursor-movement'.
146 If this is non-nil, cursor motion with arrow keys will follow the
147 visual order of characters on the screen: <left> always moves to the
148 left, <right> always moves to the right, disregarding the surrounding
149 bidirectional context.
151 ** New command `kmacro-to-register' to store keyboard macros in registers.
155 *** `sh-mode' now has the mode own `add-log-current-defun-function'.
156 You can pick the name of the function and the variables with `C-x 4 a'.
159 * Changes in Specialized Modes and Packages in Emacs 24.4
161 ** The debugger's `e' command evaluates the code in the context at point.
162 This includes using the lexical environment at point, which means that
163 `e' now lets you access lexical variables as well.
165 ** `eshell' now supports visual subcommands and options
166 Eshell has been able to handle "visual" commands (interactive,
167 non-line oriented commands such as top that require display
168 capabilities not provided by eshell) by running them in an Emacs
169 terminal emulator. See `eshell-visual-commands'.
171 This feature has been extended to subcommands and options that make a
172 usually line-oriented command a visual command. Typical examples are
173 "git log" and "git <command> --help" which display their output in a
174 pager by default. See `eshell-visual-subcommands' and
175 `eshell-visual-options'.
177 ** If your Emacs is compiled with libxml2 support, you can use the new
178 built-in web browser `eww'.
180 ** `remember' can now store notes in separates files
181 You can use the new function `remember-store-in-files' within the
182 `remember-handler-functions' option.
184 See `remember-data-directory' and `remember-directory-file-name-format'
185 for new options related to this function.
187 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
189 ~/.emacs.d/timelog replaces ~/.timelog
190 ~/.emacs.d/vip replaces ~/.vip
191 ~/.emacs.d/viper replaces ~/.viper
192 ~/.emacs.d/ido.last replaces ~/.ido.last
193 ~/.emacs.d/kkcrc replaces ~/.kkcrc
194 ~/.emacs.d/quickurls replaces ~/.quickurls
195 ~/.emacs.d/idlwave replaces ~/.idlwave
196 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
197 ~/.emacs.d/places replaces ~/.emacs-places
198 ~/.emacs.d/shadows replaces ~/.shadows
199 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
200 ~/.emacs.d/strokes replaces ~/.strokes
201 ~/.emacs.d/notes replaces ~/.notes
202 ~/.emacs.d/type-break replaces ~/.type-break
203 Also the following files used by the now obsolete otodo-mode.el:
204 ~/.emacs.d/todo-do replaces ~/.todo-do
205 ~/.emacs.d/todo-done replaces ~/.todo-done
206 ~/.emacs.d/todo-top replaces ~/.todo-top
209 ** Delphi mode is now called OPascal mode.
210 *** All delphi-* variables and functions have been renamed to opascal-*.
211 *** `delphi-newline-always-indents' is not supported any more.
212 Use `electric-indent-mode' instead.
213 *** `delphi-tab' is gone, replaced by `indent-for-tab-command'.
215 ** Eldoc Mode works properly in the minibuffer.
217 ** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.
219 ** completing-read-multiple's separator can now be a regexp.
220 The default separator is changed to allow surrounding spaces around the comma.
224 *** Battery information via the BSD `apm' utility is now supported.
228 *** `M-s a C-o' shows lines matching a regexp in marked buffers using Occur.
230 ** Calendar and Diary
233 *** New variable `diary-from-outlook-function', used by the command
234 `diary-from-outlook'.
236 ** VC and related modes
238 *** In VC directory mode, `D' displays diffs between VC-controlled
239 whole tree revisions.
241 *** In VC directory mode, `L' lists the change log for the current VC
242 controlled tree in a window.
244 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a
245 file under current version control system.
249 *** New macro cl-tagbody.
252 *** letf is now just an alias for cl-letf.
256 *** Calc by default now uses the Gregorian calendar for all dates, and
257 uses January 1, 1 AD as its day number 1. Previously Calc used the
258 Julian calendar for dates before September 14, 1752, and it used
259 December 31, 1 BC as its day number 1; the new scheme is more
260 consistent with Calendar's calendrical system and day numbering.
262 *** The new variable `calc-gregorian-switch' lets you configure the
263 date when Calc switches from the Julian to the Gregorian calendar.
264 Nil, the default value, means to always use the Gregorian calendar.
265 The value (YEAR MONTH DAY) means to start using the Gregorian calendar
268 *** Support for ISO 8601 dates.
272 *** `desktop-auto-save-timeout' defines the number of seconds between
273 auto-saves of the desktop.
275 *** `desktop-restore-frames', enabled by default, allows saving and
276 restoring the window/frame configuration. Additional options
277 `desktop-restore-in-current-display' and
278 `desktop-restoring-reuses-frames' allow further customization.
282 *** New minor mode `dired-hide-details-mode' hides details.
286 *** New option `erc-accidental-paste-threshold-seconds'.
287 If set to a number, this can be used to avoid accidentally paste large
288 amounts of data into the ERC input.
292 *** New option `epa-mail-aliases'.
294 You can set this to a list of alias expansions for keys to use
295 in `epa-mail-encrypt'.
297 If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
298 that means: when one of the recipients of the message being encrypted
299 is `foo@bar.com', encrypt the message for `foo@hello.org' instead.
301 If one element of the variable's value is ("foo@bar.com"),
302 that means: when one of the recipients of the message being encrypted
303 is `foo@bar.com', ignore that name as regards encryption.
304 This is useful to avoid a query when you have no key for that name.
307 ** New F90 mode option `f90-smart-end-names'.
309 ** Icomplete is a bit more like Ido.
310 *** key bindings to navigate through and select the completions.
311 *** The icomplete-separator is customizable, and its default has changed.
312 *** Removed icomplete-show-key-bindings.
315 *** Ido has a manual now.
316 *** `ido-use-virtual-buffers' takes a new value 'auto.
317 *** `ido-decorations' has been slightly extended to give a bit more control.
321 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
322 visit the next image file and the previous image file in the same
323 directory, respectively.
325 *** New commands to show specific frames of multi-frame images.
326 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
327 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
330 *** The command `image-mode-fit-frame' deletes other windows.
331 When toggling, it restores the frame's previous window configuration.
332 It also has an optional frame argument, which can be used by Lisp
333 callers to fit the image to a frame other than the selected frame.
337 *** New face `info-index-match' is used to highlight matches in index
338 entries displayed by `Info-index-next', `Info-virtual-index' and
343 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
344 will cycle through faces in `hi-lock-face-defaults' without prompting.
347 *** New global command `M-s h .' (`highlight-symbol-at-point')
348 highlights the symbol found near point without prompting,
349 using the next face automatically.
351 ** Search and Replace
353 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
354 starts a symbol (identifier) incremental search forward with the
355 symbol found near point added to the search string initially.
357 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
358 and adds it to the search string.
360 *** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
361 between nil and the value of the option `search-invisible' (or `open'
364 *** `query-replace' skips invisible text when `search-invisible' is nil,
365 and opens overlays with hidden text when `search-invisible' is `open'.
368 *** By default, prefix arguments do not now terminate Isearch mode.
369 Set `isearch-allow-prefix' to nil to restore old behavior.
371 *** More Isearch commands accept prefix arguments, namely
372 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
375 *** Word search now matches whitespace at the beginning/end
376 of the search string if it contains leading/trailing whitespace.
377 In an incremental word search or when using a non-nil LAX argument
378 of `word-search-regexp', the lax matching can also match part of
379 the first word (in addition to the lax matching of the last word).
380 The same rules are now applied to the symbol search with the difference
381 that it matches symbols, and non-symbol characters between symbols.
383 ** MH-E has been updated to MH-E version 8.5.
384 See MH-E-NEWS for details.
387 ** The unrmail command converts from BABYL to mboxrd rather than mboxo.
388 Customize `unrmail-mbox-format' to change this.
391 ** Similarly, customize `rmail-mbox-format' to influence some minor aspects
392 of how Rmail displays non-MIME messages.
395 ** New function `ses-rename-cell' to give SES cells arbitrary names.
397 ** trace-function was largely rewritten.
398 New features include:
399 - no prompting for the destination buffer, unless a prefix-arg was used.
400 - additionally to prompting for a destination buffer, when a prefix-arg is
401 used, the user can enter a "context", i.e. Lisp expression whose value at the
402 time the function is entered/exited will be printed along with the function
403 name and arguments. Useful to trace the value of (current-buffer) or
404 (point) when the function is invoked.
406 ** New command `delete-duplicate-lines' has new types of operation:
407 When its arg ADJACENT is non-nil (when called interactively with C-u C-u)
408 it works like the utility `uniq'. Otherwise by default it deletes
409 duplicate lines everywhere in the region without regard to adjacency.
410 When its arg KEEP-BLANKS is non-nil (when called interactively with
411 C-u C-u C-u), duplicate blank lines are preserved.
413 ** New `cycle-spacing' command allows cycling between having just one
414 space, no spaces, or reverting to the original spacing. Like
415 `just-one-space' command it can handle or ignore newlines and
416 leave different number of spaces.
418 ** Todo mode has been rewritten and enhanced.
419 New features include:
420 - support for multiple todo files and archive files of done items;
421 - renaming, reordering, moving, merging, and deleting categories;
422 - sortable tabular summaries of categories and the types of items they contain;
423 - cross-category lists of items filtered by specific criteria;
424 - more fine-grained interaction with the Emacs diary, by being able to decide
425 for each todo item whether it appears in the Fancy Diary display;
426 - highly flexible new item insertion and item editing;
427 - moving items between categories, storing done items in their category or in
428 archive files, undoing or unarchiving done items;
429 - reprioritizing items by inputting a numerical priority;
430 - extensive customizability of operation and display, including numerous faces.
431 To support some of these features, a new file format is used, which is
432 incompatible with the old format; however, you can convert old todo and done
433 item files to the new format on initializing the first new todo file, or at any
434 later time with the provided conversion command. The old version of
435 todo-mode.el has been made obsolete and renamed otodo-mode.el.
440 *** New connection method "adb", which allows to access Android
441 devices by the Android Debug Bridge. The variable `tramp-adb-program'
442 can be used to adapt the path of the "adb" program, if needed.
444 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
445 "scpc" and "rsyncc" are discontinued. The ssh option
446 "ControlMaster=auto" is set automatically in all ssh-based methods,
450 *** Handlers for `file-acl' and `set-file-acl' for remote machines
451 which support POSIX ACLs.
454 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
455 for remote machines which support filesystem notifications.
459 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
461 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
465 *** The commands `woman-default-faces' and `woman-monochrome-faces'
466 are obsolete. Customize the `woman-*' faces instead.
470 *** Added Eshell-Tramp module
471 External su and sudo commands are now the default; the internal,
472 Tramp-using variants can still be used by enabling the eshell-tramp
475 ** New term.el option `term-suppress-hard-newline'.
477 ** Obsolete packages:
479 *** longlines.el is obsolete; use visual-line-mode instead.
484 *** terminal.el is obsolete; use term.el instead.
486 *** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.
491 *** yow.el is obsolete; use fortune.el or cookie1.el instead.
494 *** The Info-edit command is obsolete. Editing Info nodes by hand
495 has not been relevant for some time.
499 *** `explicit-bash-args' now always defaults to use --noediting.
500 During initialization, Emacs no longer expends a process to decide
501 whether it is safe to use Bash's --noediting option. These days
502 --noediting is ubiquitous; it was introduced in 1996 in Bash version 2.
505 * New Modes and Packages in Emacs 24.4
507 ** New `superword-mode' in subword.el
508 `superword-mode' overrides the default word motion commands to treat
509 symbol_words as a single word, similar to what `subword-mode' does and
510 using the same internal functions.
512 ** New nadvice.el package offering lighter-weight advice facilities.
514 - add-function/remove-function which can be used to add/remove code on any
515 function-carrying place, such as process-filters or `<foo>-function' hooks.
516 - advice-add/advice-remove to add/remove a piece of advice on a named function,
517 much like `defadvice' does.
520 ** The package filenotify.el provides an interface for file system
521 notifications. It requires, that Emacs is compiled with one of the
522 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
525 * Incompatible Lisp Changes in Emacs 24.4
527 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
529 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
530 Some languages match those as »...« and others as «...» so better stay neutral.
532 ** The default file coding for Emacs Lisp files is now utf-8.
533 (See file-coding-system-alist.) In most cases, this change is transparent, but
534 files that contain unusual characters without specifying an explicit coding
535 system may fail to load with obscure errors.
536 You should either convert them to utf-8 or add an explicit `coding:' cookie.
538 ** overriding-terminal-local-map does not replace the local keymaps any more.
539 It used to disable the minor mode, major mode, and text-property keymaps,
540 whereas now it simply has higher precedence.
542 ** Default process filters and sentinels are not nil any more.
543 Instead they default to a function which does what the nil value used to do.
545 ** `read-event' does not return decoded chars in ttys any more.
546 Just as was the case in Emacs-22 and before, decoding of tty input according to
547 keyboard-coding-system is not performed in read-event any more. But contrary
548 to that past, it is still done before input-decode-map/function-key-map/...
550 ** Removed inhibit-local-menu-bar-menus.
552 ** frame-local variables that affect redisplay do not work any more.
553 More specifically, the redisplay does not bother to check for a frame-local
554 value when looking up variables.
556 ** nil and "unbound" are indistinguishable in symbol-function.
557 `symbol-function' never signals `void-function' any more.
558 `fboundp' returns non-nil if the symbol was `fset' to nil.
560 ** `defadvice' does not honor the `freeze' flag and cannot advise
561 special-forms any more.
563 ** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
564 VAR was bound to nil which was not tremendously useful and just lead to
565 spurious warnings about an unused var.
567 ** The return value of `backup-buffer' has changed.
568 The second argument is no longer an SELinux context, instead it is an
569 alist of extended attributes as returned by the new function
570 `file-extended-attributes'. The attributes can be applied to another
571 file using `set-file-extended-attributes'.
573 ** `visited-file-modtime' now returns -1 for nonexistent files.
574 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
575 in the presence of files with negative time stamps.
577 * Lisp Changes in Emacs 24.4
579 ** New hook `tty-setup-hook'.
582 ** New macro with-eval-after-load. Like eval-after-load, but better behaved.
584 ** Obsoleted functions:
587 *** `lisp-complete-symbol'
589 *** `minibuffer-completion-contents'
590 *** `isearch-nonincremental-exit-minibuffer'
591 *** `isearch-filter-visible'
592 *** `generic-make-keywords-list'
594 ** `with-wrapper-hook' is obsoleted by `add-function'.
595 The few hooks that used with-wrapper-hook are replaced as follows:
596 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
597 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
598 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
600 ** `split-string' now takes an optional argument TRIM.
601 The value, if non-nil, is a regexp that specifies what to trim from
602 the start and end of each substring.
604 ** `get-upcase-table' is obsoleted by the new `case-table-get-table'.
606 ** Support for filesystem notifications.
607 Emacs now supports notifications of filesystem changes, such as
608 creation, modification, and deletion of files. This requires the
609 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
610 MS-Windows systems, this is supported for Windows XP and newer
613 ** Changes in autorevert.el
616 *** If Emacs is compiled with file notification support, notifications
617 are used instead of checking the time stamp of the files. You can
618 disable this by setting the user option `auto-revert-use-notify' to
619 nil. Alternatively, a regular expression of directories to be
620 excluded from file notifications can be specified by
621 `auto-revert-notify-exclude-dir-regexp'.
624 *** The new user option `auto-revert-remote-files' enables reversion
625 of remote files when set to non-nil.
629 *** The function `face-spec-set' is now analogous to `setq' for face specs.
630 Its third arg now accepts values specifying exactly which face spec to
631 set (defface, custom, or user spec), and it directly sets the relevant
632 property using the supplied face spec.
634 *** Face specs set via Custom themes now replace the `defface' spec
635 rather than inheriting from it (as do face specs set via Customize).
637 *** New face characteristic (supports :underline (:style wave))
638 specifies whether or not the terminal can display a wavy line.
643 *** `image-animated-p' is now `image-multi-frame-p'.
644 It returns non-nil for any image that contains multiple frames,
645 whether or not it specifies a frame delay.
648 *** When animating images that do not specify a frame delay,
649 Emacs uses `image-default-frame-delay'.
652 *** New functions `image-current-frame' and `image-show-frame' for getting
653 and setting the current frame of a multi-frame image.
655 ** Changes in encoding and decoding of text
658 *** New coding-system `prefer-utf-8'.
659 This is like `undecided' but prefers UTF-8 on decoding if the text to
660 be decoded does not contain any invalid UTF-8 sequences. On encoding,
661 any non-ASCII characters are automatically encoded as UTF-8.
664 *** New attributes of coding-systems whose type is `undecided'.
665 Two new attributes, `:inhibit-null-byte-detection' and
666 `:inhibit-iso-escape-detection', determine how to detect encoding of
667 text that includes null bytes and ISO-2022 escape sequences,
668 respectively. Each of these attributes can be either nil, zero, or
669 t. If it is t, decoding text ignores null bytes and, respectively,
670 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
671 with no-conversion and ISO-2022 sequences cause Emacs to assume the
672 text is encoded in one of the ISO-2022 encodings, such as
673 iso-2022-7bit. If the value is zero, Emacs consults the variables
674 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
676 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
677 UTF-8 encoding and decoding, whenever possible.
679 These attributes are only meaningful for coding-systems of type
680 `undecided'. (The type of a coding-system is determined by its
681 `:coding-type' attribute and can be accessed by calling the
682 `coding-system-type' function.)
684 ** The function `set-visited-file-modtime' now accepts a 0 or -1 argument
685 with the same interpretation as the returned value of `visited-file-modtime'.
687 ** time-to-seconds is not obsolete any more.
688 ** New function special-form-p.
689 ** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
690 text-property on the first char.
692 ** The `defalias-fset-function' property lets you catch calls to defalias
693 and redirect them to your own function instead of `fset'.
695 ** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
696 When you edit DIR/FILE, Emacs normally creates a symbolic link
697 DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
698 is being edited. Formerly, if there was already a non-symlink file
699 named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
700 through DIR/.#FILE.9. These fallbacks have been removed, so that
701 Emacs now no longer locks DIR/FILE in that case.
703 On file systems that do not support symbolic links, the lock is now a
704 regular file with contents being what would have been in the symlink.
706 ** The 9th element returned by `file-attributes' is now unspecified.
707 Formerly, it was t if the file's gid would change if file were deleted
708 and recreated. This value has been inaccurate for years on many
709 platforms, and nobody seems to have noticed or cared.
711 ** The function `file-ownership-preserved-p' now has an optional
712 argument GROUP which causes it check for file group too. This can be
713 used in place of the 9th element of `file-attributes'.
715 ** New functions `group-gid' and `group-real-gid'.
717 ** The 6th argument to `copy-file' has been renamed to
718 `preserve-extended-attributes' as it now handles both SELinux context
721 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
723 *** The package descriptor and name of global variables, constants,
724 and functions should be separated by two hyphens if the symbol is not
725 meant to be used by other packages.
728 * Changes in Emacs 24.4 on Non-Free Operating Systems
730 ** Emacs for MS-Windows can now be built by running the configure script
731 using the MSYS environment and MinGW development tools.
732 This is from now on the preferred method of building Emacs on
733 MS-Windows. The Windows-specific configure.bat and makefile.w32-in
734 files are deprecated. See the file nt/INSTALL.MSYS for detailed
737 Using the Posix configure script and Makefile's also means a change in
738 the directory structure of the Emacs installation on Windows. It is
739 now the same as on GNU and Unix systems. In particular, the auxiliary
740 programs, such as cmdproxy.exe and hexl.exe, are in
741 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
742 version), version-independent site-lisp is in share/emacs/site-lisp,
743 version-specific Lisp files are in share/emacs/VERSION/lisp and in
744 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
745 files are in share/emacs/VERSION/etc. (Emacs knows about all these
746 directories and will find the files in there automatically; there's no
747 need to set any variables due to this change.)
750 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
751 The backtrace is written to the 'emacs_backtrace.txt' file in the
752 directory where Emacs was running.
755 ** The variable `buffer-file-type' is no longer supported.
756 Setting it has no effect, and %t in the mode-line format is ignored.
757 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
758 modifying it has no effect.
761 ** Lock files now work on MS-Windows.
762 This allows to avoid losing your edits if the same file is being
763 edited in another Emacs session or by another user. See the node
764 "Interlocking" in the Emacs User Manual for the details. To disable
765 file locking, customize `create-lockfiles' to nil.
767 ** Improved fullscreen support on Mac OS X.
768 Both native (>= OSX 10.7) and "old style" fullscreen are supported.
769 Customize `ns-use-native-fullscreen' to change style. For >= 10.7
770 native is the default.
773 * Installation Changes in Emacs 24.3
775 ** The default X toolkit is now Gtk+ version 3.
776 If you don't pass `--with-x-toolkit' to configure, or if you use
777 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
778 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
779 You can explicitly require a specific version by passing
780 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
782 ** New configure option `--enable-link-time-optimization', to utilize
783 an appropriate feature provided by GCC since version 4.5.0.
785 ** New configure option `--without-all' to disable most of the optional
786 features (image support, etc.) that are normally enabled by default.
788 ** New configure option `--enable-gcc-warnings' (for developing/debugging
789 Emacs). If building with GCC, this enables compile-time checks that
790 warn/give errors about possibly-questionable C code. On a recent GNU
791 system there should be no warnings; on older and on non-GNU systems
792 the results may be useful to developers.
794 ** The configure option `--enable-use-lisp-union-type' has been
795 renamed to `--enable-check-lisp-object-type', as the resulting
796 Lisp_Object type no longer uses a union to implement the compile time
797 check that this option enables.
799 ** The configure option `--disable-maintainer-mode' has been removed,
800 as it was confusingly-named and rarely useful.
802 ** The configure options `--program-prefix', `--program-suffix', and
803 `--program-transform-name' apply to more than just the installed
804 binaries. Now they also affect the man pages, icons, and the
805 etc/emacs.desktop file; but not the info pages, since this would break
806 links between the various manuals.
808 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
809 overwriting "emacs" in the installation bin/ directory with a link
812 ** Emacs uses libtinfo in preference to libncurses, if available.
814 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
815 /usr/pkg/lib to the linker search path. You must add them yourself if
818 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
819 (from the bin and libexec directories, respectively). The former is
820 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
823 * Startup Changes in Emacs 24.3
825 ** Emacs no longer searches for `leim-list.el' files beneath the standard
826 lisp/ directory. There should not be any there anyway. If you have
827 been adding them there, put them somewhere else; e.g., site-lisp.
829 ** The `--no-site-lisp' command line option now works for Nextstep builds.
832 * Changes in Emacs 24.3
836 *** `C-h f' (`describe-function') can now perform autoloading.
837 When this command is called for an autoloaded function whose docstring
838 contains a key substitution construct, that function's library is
839 automatically loaded, so that the documentation can be shown
840 correctly. To disable this, set `help-enable-auto-load' to nil.
842 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
843 even after their associated libraries have been loaded (and the
844 autoloads have been redefined as functions).
848 *** Images displayed via ImageMagick now support transparency and the
849 :background image specification property.
851 *** When available, ImageMagick support is automatically enabled.
852 It is no longer necessary to call `imagemagick-register-types'
853 explicitly to install ImageMagick image types; that function is called
854 automatically at startup, or when customizing an imagemagick- option.
856 *** Setting `imagemagick-types-inhibit' to t now disables the use of
857 ImageMagick to view images. (You must call `imagemagick-register-types'
858 afterwards if you do not use customize to change this.)
860 *** The new variable `imagemagick-enabled-types' also affects which
861 ImageMagick types are treated as images. The function
862 `imagemagick-filter-types' returns the list of types that will be
865 *** ImageMagick images now support the :max-width and :max-height
870 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
871 next and previous path separator, respectively.
873 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
874 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
875 non-nil before enabling the mode.
879 *** New option `mode-line-default-help-echo' specifies the help text
880 (shown in a tooltip or in the echo area) for any part of the mode line
881 that does not have its own specialized help text.
883 *** You can now click mouse-3 in the coding system indicator to invoke
884 `set-buffer-file-coding-system'.
888 *** emacsclient now obeys string values for `initial-buffer-choice',
889 if it is told to open a new frame without specifying any file to visit
890 or expression to evaluate.
892 *** New option `server-auth-key' specifies a shared server key.
894 ** Emacs now generates backtraces on fatal errors.
895 On encountering a fatal error, Emacs now outputs a textual description
896 of the fatal signal, and a short backtrace on platforms like glibc
897 that support backtraces.
899 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
900 This minor mode replaces `toggle-read-only', which is now obsolete.
902 ** Most `y-or-n' prompts now allow you to scroll the selected window.
903 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
904 respectively, without exiting from the prompt.
906 ** In the Package Menu, newly-available packages are listed as "new",
907 and sorted above the other "available" packages by default.
909 ** If your Emacs was built from a bzr checkout, the new variable
910 `emacs-bzr-version' contains information about the bzr revision used.
912 ** New option `create-lockfiles' specifies usage of lockfiles.
913 It defaults to t. Changing it to nil inhibits the creation of lock
914 files (use this with caution).
916 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
917 variables on remote hosts.
919 ** The entry for PCL-CVS has been removed from the Tools menu.
920 The PCL-CVS commands are still available via the keyboard.
922 ** Using "unibyte: t" in Lisp source files is obsolete.
923 Use "coding: raw-text" instead.
925 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
926 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
927 The previous binding, introduced in Emacs 24.1, was a mistake, because
928 `C-c LETTER' bindings are reserved for user customizations.
930 ** Internationalization
932 *** New language environment: Persian.
934 *** New input method `vietnamese-vni'.
936 ** Nextstep (GNUstep / Mac OS X) port
938 *** Support for fullscreen and the frame parameter fullscreen.
940 *** A file dialog is used for open/save operations initiated from the
944 * Editing Changes in Emacs 24.3
946 ** Search and Replace
948 *** Non-regexp Isearch now performs "lax" space matching.
949 Each sequence of spaces in the supplied search string may match any
950 sequence of one or more whitespace characters, as specified by the
951 variable `search-whitespace-regexp'. (This variable is also used by a
952 similar existing feature for regexp Isearch.)
954 *** New Isearch command `M-s SPC' toggles lax space matching.
955 This applies to both ordinary and regexp Isearch.
957 *** New option `replace-lax-whitespace'.
958 If non-nil, `query-replace' uses flexible whitespace matching too.
961 *** Global `M-s _' starts a symbol (identifier) incremental search,
962 and `M-s _' in Isearch toggles symbol search mode.
963 `M-s c' in Isearch toggles search case-sensitivity.
965 ** Navigation commands
967 *** New binding `M-g c' for `goto-char'.
969 *** New binding `M-g TAB' for `move-to-column'.
971 *** `M-g TAB' (`move-to-column') prompts for a column number if called
972 interactively with no prefix arg. Previously, it moved to column 1.
974 ** New option `yank-handled-properties' allows processing of text
975 properties on yanked text, in ways that are more general than just
976 removing them (as is done by `yank-excluded-properties').
978 ** New option `delete-trailing-lines' specifies whether
979 M-x delete-trailing-whitespace should delete trailing lines at the end
980 of the buffer. It defaults to t.
982 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
984 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
985 `ucs-insert' is now an obsolete alias for `insert-char'.
987 ** The `z' key no longer has a binding in most special modes.
988 It used to be bound to `kill-this-buffer', but `z' is too easy to
991 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
992 It copies the region-rectangle as the last rectangle kill.
996 *** `C-x r +' is now overloaded to invoke `append-to-register'.
998 *** New option `register-separator' specifies the register containing
999 the text to put between collected texts for use with
1000 M-x append-to-register and M-x prepend-to-register.
1003 * Changes in Specialized Modes and Packages in Emacs 24.3
1005 ** Common Lisp emulation (CL)
1007 *** CL's main entry is now (require 'cl-lib).
1008 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1009 i.e., all its definitions have the "cl-" prefix (and internal definitions
1010 use the "cl--" prefix).
1012 If `cl' provided a feature under the name `foo', then `cl-lib'
1013 provides it under the name `cl-foo' instead; with the exceptions of the
1014 few `cl' definitions that had to use `foo*' to avoid conflicts with
1015 pre-existing Elisp entities. These have been renamed to `cl-foo'
1016 rather than `cl-foo*'.
1018 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1019 provide the old, non-prefixed names. Some exceptions are listed below:
1021 *** `cl-flet' is not like `flet' (which is deprecated).
1022 Instead it obeys the behavior of Common-Lisp's `flet'.
1023 In particular, in cl-flet function definitions are lexically scoped,
1024 whereas in flet the scoping is dynamic.
1026 *** `cl-labels' is slightly different from `labels'.
1027 The difference is that it relies on the `lexical-binding' machinery
1028 (as opposed to the `lexical-let' machinery used previously) to capture
1029 definitions in closures, so such closures will only work if `lexical-binding'
1032 *** `cl-letf' is not exactly like `letf'.
1033 The only difference is in details that relate to some deprecated usage
1034 of `symbol-function' in place forms.
1036 *** `progv' was rewritten to use the `let' machinery.
1037 A side effect is that variables without corresponding values are bound
1038 to nil rather than being made unbound.
1040 *** The following methods of extending `setf' are obsolete
1041 (use features from gv.el instead):
1042 `define-modify-macro' (use `gv-letplace')
1043 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1044 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1045 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1049 *** Changes are now highlighted using the same color scheme as in
1050 modern VCSes. Deletions are displayed in red (new faces
1051 `diff-refine-removed' and `smerge-refined-removed', and new definition
1052 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1053 and `smerge-refined-added', and new definition of `diff-added').
1055 *** The variable `diff-use-changed-face' defines whether to use the
1056 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1057 changes in context diffs.
1059 *** The new command `diff-delete-trailing-whitespace' removes trailing
1060 whitespace introduced by a diff.
1062 ** Ediff now uses the same color scheme as Diff mode.
1066 A new version of python.el, which provides several new features, including:
1067 per-buffer shells, better indentation, Python 3 support, and improved
1068 shell-interaction compatible with iPython (and virtually any other
1071 *** Some user options have been replaced/renamed, including (old -> new):
1072 **** python-indent -> python-indent-offset
1073 **** python-guess-indent -> python-indent-guess-indent-offset
1074 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1075 **** python-use-skeletons -> python-skeleton-autoinsert
1077 *** Some user options have been removed, including:
1079 **** `python-indent-string-contents': Strings are never indented.
1081 **** `python-honour-comment-indentation':
1082 Comments are always considered as indentation markers.
1084 **** `python-continuation-offset': Indentation is automatically
1085 calculated in a pep8 compliant way depending on the context.
1087 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1088 Have no direct mapping as the shell interaction is completely different.
1090 **** `python-python-command', `python-jython-command':
1091 Replaced by `python-shell-interpreter'.
1093 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1094 `python-pdbtrack-minor-mode-string', `python-source-modes':
1097 *** Some commands have been replaced (old -> new):
1098 **** python-insert-class -> python-skeleton-class
1099 **** python-insert-def -> python-skeleton-def
1100 **** python-insert-for -> python-skeleton-for
1101 **** python-insert-if -> python-skeleton-if
1102 **** python-insert-try/except -> python-skeleton-try
1103 **** python-insert-try/finally -> python-skeleton-try
1104 **** python-insert-while -> python-skeleton-while
1105 **** python-find-function -> python-nav-jump-to-defun
1106 **** python-next-statement -> python-nav-forward-sentence
1107 **** python-previous-statement -> python-nav-backward-sentence
1108 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1109 **** python-end-of-defun-function -> python-nav-end-of-defun
1110 **** python-send-buffer -> python-shell-send-buffer
1111 **** python-send-defun -> python-shell-send-defun
1112 **** python-send-region -> python-shell-send-region
1113 **** python-send-region-and-go -> emulate with python-shell-send-region
1114 and python-shell-switch-to-shell
1115 **** python-send-string -> python-shell-send-string
1116 **** python-switch-to-python -> python-shell-switch-to-shell
1117 **** python-describe-symbol -> python-eldoc-at-point
1121 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1123 *** The D-Bus object manager interface is implemented.
1125 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
1126 if their value does not fit into Emacs's integer range.
1128 *** The function `dbus-call-method' is now non-blocking.
1129 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
1131 *** Signals can also be sent as unicast messages.
1133 *** The argument list of `dbus-register-signal' has been extended,
1134 according to the new match rule types of D-Bus.
1136 *** `dbus-init-bus' supports private connections.
1138 *** There is a new function `dbus-setenv'.
1140 ** `desktop-path' no longer includes the "." directory.
1141 Desktop files are now located in ~/.emacs.d by default.
1145 *** `dired-do-async-shell-command' executes each file sequentially
1146 if the command ends in `;' (when operating on multiple files).
1147 Otherwise, it executes the command on each file in parallel.
1149 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1150 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
1153 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
1154 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
1155 mark/unmark/flag all files in the active region.
1157 *** The minibuffer default for `=' (`dired-diff') has changed.
1158 It is now the backup file for the file at point, if one exists.
1159 In Transient Mark mode the default is the file at the active mark.
1161 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1162 The global binding for `M-=', `count-words-region' is in effect.
1166 *** New module "notifications", which can send a notification when you
1167 receive a private message or your nickname is mentioned.
1169 *** ERC will look up server/channel names via auth-source and use any
1172 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1173 only applies to messages sent by lurkers.
1175 ** reStructuredText mode
1177 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1178 fontification, comment handling, and customization have all been revised
1181 *** Support for `imenu' and `which-function-mode'.
1183 *** The reStructuredText syntax is more closely covered.
1184 Sphinx support has been improved.
1186 *** `rst-insert-list' inserts new list or continues existing lists.
1188 *** A negative prefix argument always works for `rst-adjust'.
1190 *** The window configuration is reset after displaying a TOC.
1192 *** The constant `rst-version' describes the rst.el package version.
1196 *** Support for percent literals and recognition of regular expressions
1197 in method calls without parentheses with more methods, including Cucumber
1200 *** Improved syntax highlighting and indentation.
1202 *** New command `ruby-toggle-block', bound to `C-c {'.
1204 *** Some non-standard keybindings/commands have been removed:
1206 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
1208 **** `ruby-mark-defun'; use `mark-defun'.
1210 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1211 appropriate settings for the variables `beginning-of-defun-function'
1212 and `end-of-defun-function'.
1214 **** Non-standard keybindings for `backward-kill-word', `comment-region',
1215 `reindent-then-newline-and-indent' and `newline' have been removed.
1217 ** Shell Script mode
1219 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1221 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1223 *** `sh-use-smie' lets you choose a new indentation and navigation code.
1227 *** The free software compiler GHDL is supported (and now the default).
1229 *** Support for the VHDL-AMS packages has been added/updated.
1231 *** Updated to the 2002 revision of the VHDL standard.
1233 *** Accepts \r and \f as whitespace.
1237 *** The faces used by Apropos are now directly customizable.
1238 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1239 see the `apropos' Custom group for details.
1241 *** The old options whose values specified faces to use have been removed
1242 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1246 *** This package has been rewritten to use Tabulated List mode.
1248 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
1249 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1253 *** Algebraic simplification mode is now the default.
1254 To restrict to the limited simplifications given by the former
1255 default simplification mode, use `m I'.
1259 *** You can customize the header text that appears above each calendar month.
1260 See the variable `calendar-month-header'.
1262 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
1264 *** The calendars produced by cal-html include holidays.
1265 Customize `cal-html-holidays' to change this.
1269 *** The major modes from the parser generators "Bovine" and "Wisent"
1270 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1271 are in `auto-mode-alist', and the corresponding manuals are included.
1275 **** Menu support for the "Configuration" feature. This allows users to
1276 choose the active configuration (such as debug or install) from the menu.
1278 **** New command `ede-set' to interactively set project-local variables.
1280 **** Support for compiling, debugging, and running in "generic" projects.
1282 **** Autoconf editing support for M4 macros with complex arguments.
1284 **** Compilation support for the "linux" project type.
1286 **** "simple" projects have been removed; use "generic" projects instead.
1290 **** Support for parsing #include statements inside a namespace in C/C++.
1292 **** Improved support for 'extern "C"' declarations in C/C++.
1294 **** The ability to ignore more common special C/C++ preprocessor symbols,
1295 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1296 If available, include cdefs.h as an additional source of preprocessor symbols.
1298 **** Improved C/C++ function pointer parsing.
1300 **** In Python, support for converting imports to include file names.
1302 **** Ability to dynamically determine the Python load path.
1304 **** Support for the Python 'WITH' and 'AT' keywords.
1306 **** Improved tooltip completion.
1310 **** The SRecode manual is now included.
1312 **** Tag generation supports constructor/destructor settings and system
1313 include differentiation.
1315 **** Addition of 'Framework' support: Frameworks are specified when a
1316 particular kind of library (such as Android) is needed in a common language
1319 **** Support for nested templates and let variables override based on priority.
1321 **** Support for merging tables from multiple related modes, such as
1322 default -> c++ -> arduino.
1324 ** Compile has a new option `compilation-always-kill'.
1328 *** `custom-reset-button-menu' now defaults to t.
1330 *** Non-option variables are never matched in `customize-apropos' and
1331 `customize-apropos-options' (i.e., the prefix argument does nothing for
1332 these commands now).
1336 *** The variables `term-default-fg-color' and `term-default-bg-color'
1337 are now deprecated in favor of the customizable face `term'.
1339 *** You can customize how to display ANSI terminal colors and styles
1340 by customizing the corresponding `term-color-<COLOR>',
1341 `term-color-underline' and `term-color-bold' faces.
1345 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
1347 *** Remote processes are now also supported on remote MS-Windows hosts.
1351 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1352 Previously, this slot stored semicolon-separated attribute-value pairs
1353 appended to some imap URLs, but this is not compatible with RFC 3986.
1354 So now the `filename' slot stores the entire path and query components,
1355 and the `attributes' slot is always nil.
1357 *** New function `url-encode-url' for encoding a URI string.
1358 The `url-retrieve' function now uses this to encode its URL argument,
1359 in case that is not properly encoded.
1361 *** New command `url-cookie-list' displays all the current cookies, and
1362 allows deleting selected cookies.
1364 ** notifications.el supports now version 1.2 of the Notifications API.
1365 The function `notifications-get-capabilities' returns the supported
1368 ** Flymake uses fringe bitmaps to indicate errors and warnings.
1369 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1370 `flymake-warning-bitmap'.
1372 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1373 specifying URL types that should be converted to remote file names at
1374 the FFAP prompt. The default is now '("ftp").
1376 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
1377 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
1379 ** New option `mouse-avoidance-banish-position' specifies where the
1380 `banish' mouse avoidance setting moves the mouse.
1382 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1383 closing brackets to be aligned with the line of the opening bracket.
1385 ** In Proced mode, new command `proced-renice' renices marked processes.
1387 ** New option `async-shell-command-buffer' specifies the buffer to use
1388 for a new asynchronous `shell-command' when the default output buffer
1389 `*Async Shell Command*' is already in use.
1391 ** SQL mode has a new option `sql-db2-escape-newlines'.
1392 If non-nil, newlines sent to the command interpreter will be escaped
1393 by a backslash. The default does not escape the newlines and assumes
1394 that the sql statement will be terminated by a semicolon.
1396 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1397 (and modes that derive from it), sorts the column at point, or the Nth
1398 column if a numeric prefix argument is given.
1400 ** `which-func-modes' now defaults to t, so Which Function mode, when
1401 enabled, applies to all applicable major modes.
1403 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
1406 ** Follow mode no longer works by using advice.
1407 The option `follow-intercept-processes' has been removed.
1409 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
1411 ** Hooks renamed to avoid obsolete "-hooks" suffix:
1412 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1413 *** semantic-change-hooks -> semantic-change-functions
1414 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1415 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1416 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1417 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1418 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1419 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1420 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1421 *** rcirc-activity-hooks -> rcirc-activity-functions
1422 *** rcirc-print-hooks -> rcirc-print-functions
1423 *** dbus-event-error-hooks -> dbus-event-error-functions
1424 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1425 *** checkdoc-style-hooks -> checkdoc-style-functions
1426 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1427 *** archive-extract-hooks -> archive-extract-hook
1428 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1429 *** hfy-post-html-hooks -> hfy-post-html-hook
1430 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1431 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1432 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1433 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
1435 ** Obsolete packages
1438 In most cases, assoc+member+push+delq work just as well.
1439 And in any case it's just a terrible package: ugly semantics, terrible
1440 inefficiency, and not namespace-clean.
1449 * Incompatible Lisp Changes in Emacs 24.3
1451 ** Docstrings starting with `*' no longer indicate user options.
1452 Only variables defined using `defcustom' are considered user options.
1453 The function `user-variable-p' is now an obsolete alias for
1454 `custom-variable-p'.
1456 ** The return values of `defalias', `defun' and `defmacro' have changed,
1457 and are now undefined. For backwards compatibility, `defun' and
1458 `defmacro' currently return the name of the newly defined
1459 function/macro, but this should not be relied upon.
1461 ** `random' by default now returns a different random sequence in
1462 every Emacs run. Use `(random S)', where S is a string, to set the
1463 random seed to a value based on S, in order to get a repeatable
1464 sequence in later calls.
1466 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1467 that substring is inserted literally even if the LITERAL arg is
1468 non-nil, instead of causing an error to be signaled.
1470 ** `select-window' now always makes the window's buffer current.
1471 It does so even if the window was selected before.
1473 ** The function `x-select-font' can return a font spec, instead of a
1474 font name as a string. Whether it returns a font spec or a font name
1475 depends on the graphical library.
1477 ** `face-spec-set' no longer sets frame-specific attributes when the
1478 third argument is a frame (that usage was obsolete since Emacs 22.2).
1480 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
1482 ** The CL package's `get-setf-method' function no longer exists.
1483 Generalized variables are now part of core Emacs Lisp, and implemented
1484 differently to the way cl.el used to do it. It is not possible to
1485 define a compatible replacement for `get-setf-method'. See the file
1486 gv.el for internal details of the new implementation.
1488 ** The arguments of `dbus-register-signal' are no longer just strings,
1489 but keywords or keyword-string pairs. The old argument list will
1490 still be supported for Emacs 24.x.
1492 ** Miscellaneous name changes
1493 Some Lisp symbols have been renamed to correct their spelling,
1494 or to be more consistent with standard Emacs terminology.
1496 *** Renamed functions
1497 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
1498 **** inactivate-input-method -> deactivate-input-method
1499 **** quail-inactivate -> quail-deactivate
1500 **** robin-inactivate -> robin-deactivate
1501 **** viper-inactivate-input-method -> viper-deactivate-input-method
1502 **** viper-inactivate-input-method-action ->
1503 viper-deactivate-input-method-action
1504 **** ucs-input-inactivate -> ucs-input-deactivate
1507 The old hooks are still supported for backward compatibility, but they
1508 are deprecated and will be removed eventually.
1509 **** input-method-inactivate-hook -> input-method-deactivate-hook
1510 **** robin-inactivate-hook -> robin-deactivate-hook
1511 **** quail-inactivate-hook -> quail-deactivate-hook
1513 *** Renamed variables
1514 **** follow-deactive-menu -> follow-inactive-menu
1515 **** inactivate-current-input-method-function ->
1516 deactivate-current-input-method-function
1518 ** Some obsolete functions, variables, and faces have been removed:
1519 *** `last-input-char', `last-command-char', `unread-command-char'
1520 *** `facemenu-unlisted-faces'
1521 *** `rmail-decode-mime-charset'
1522 *** `iswitchb-read-buffer'
1523 *** `sc-version', `sc-submit-bug-report'
1524 *** `set-char-table-default'
1525 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
1526 *** `compile-internal'
1528 *** `mode-line-inverse-video'
1529 *** `follow-mode-off-hook'
1530 *** `cvs-commit-buffer-require-final-newline'
1531 (use `log-edit-require-final-newline' instead)
1532 *** `cvs-changelog-full-paragraphs'
1533 (use `log-edit-changelog-full-paragraphs' instead)
1534 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1535 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1536 *** `vc-master-templates' (use `vc-handled-backends' instead)
1537 *** `vc-checkout-carefully'
1540 * Lisp Changes in Emacs 24.3
1542 ** CL-style generalized variables are now in core Elisp.
1543 `setf' is autoloaded; `push' and `pop' accept generalized variables.
1544 You can define your own generalized variables using `gv-define-simple-setter',
1545 `gv-define-setter', etc.
1547 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1548 This can significantly speed up execution of non-byte-compiled code,
1549 but can also bump into previously unnoticed cyclic dependencies.
1550 These are generally harmless: they will simply cause the macro calls
1551 to be left for later expansion (as before), but will result in a
1552 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1553 You may wish to restructure your code so this does not happen.
1555 ** New sampling-based Elisp profiler.
1556 Try M-x profiler-start, do some work, and then call M-x profiler-report.
1557 When finished, use M-x profiler-stop. The sampling rate can be based on
1558 CPU time or memory allocations.
1560 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1561 The interpretation of the DECLS is determined by `defun-declarations-alist'.
1563 ** New macros `setq-local' and `defvar-local'.
1565 ** Face underlining can now use a wave.
1567 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
1568 of `read-regexp' accepts a string ending with a colon and space, and its
1569 second argument DEFAULTS can be a list of strings accessible via `M-n'
1570 in the minibuffer ahead of other hard-coded useful regexp-related values.
1571 More commands use `read-regexp' now to read their regexp arguments.
1575 *** New function `completion-table-with-quoting' to handle completion
1576 in the presence of quoting, such as file completion in shell buffers.
1578 *** New function `completion-table-subvert' to use an existing completion
1579 table, but with a different prefix.
1583 *** New error type and new function `user-error'.
1584 These do not trigger the debugger.
1586 *** New option `debugger-bury-or-kill', saying what to do with the
1587 debugger buffer when exiting debug.
1589 *** Set `debug-on-message' to enter the debugger when a certain
1590 message is displayed in the echo area. This can be useful when trying
1591 to work out which code is doing something.
1593 *** New var `inhibit-debugger', automatically set to prevent accidental
1594 recursive invocations.
1598 *** New command `fit-frame-to-buffer' adjusts the frame height to
1601 *** The command `fit-window-to-buffer' can adjust the frame height
1602 if the new option `fit-frame-to-buffer' is non-nil.
1604 *** New macro `with-temp-buffer-window', similar to
1605 `with-output-to-temp-buffer'.
1607 *** `temp-buffer-resize-mode' no longer resizes windows that have been
1610 *** New option `switch-to-buffer-preserve-window-point' to restore a
1611 window's point when switching buffers.
1613 *** New display action alist entries `window-height' and `window-width'
1614 specify the size of new windows created by `display-buffer'.
1616 *** New display action alist entry `pop-up-frame-parameters', if
1617 non-nil, specifies frame parameters to give any newly-created frame.
1619 *** New display action alist entry `inhibit-switch-frame', if non-nil,
1620 tells display action functions to avoid changing which frame is
1623 *** New display action alist entry `previous-window', if non-nil,
1624 specifies window to reuse in `display-buffer-in-previous-window'.
1626 *** New display action functions `display-buffer-below-selected',
1627 and `display-buffer-in-previous-window'.
1629 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1630 now accept a third argument to avoid choosing the selected window.
1632 *** Additional values recognized for option `window-combination-limit'.
1634 *** The following variables are obsolete, as they can be replaced by
1635 appropriate entries in the `display-buffer-alist' function introduced
1637 **** `dired-shrink-to-fit'
1638 **** `display-buffer-reuse-frames'
1639 **** `display-buffer-function'
1640 **** `special-display-buffer-names'
1641 **** `special-display-frame-alist'
1642 **** `special-display-function'
1643 **** `special-display-regexps'
1647 *** `current-time-string' no longer requires that its argument's year
1648 must be in the range 1000..9999. It now works with any year supported
1649 by the underlying C implementation.
1651 *** `current-time' now returns extended-format time stamps
1652 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1653 PSEC is typically a multiple of 1000 on current machines. Other
1654 functions that use this format, such as `file-attributes' and
1655 `format-time-string', have been changed accordingly. Old-format time
1656 stamps are still accepted.
1658 *** The format of timers in `timer-list' and `timer-idle-list' is now
1659 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1660 The PSECS slot is new, and uses picosecond resolution. It can be
1661 accessed via the new `timer--psecs' accessor.
1663 *** Last-modified time stamps in undo lists now are of the form
1664 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1668 *** Improved security when handling persistent objects:
1670 **** `eieio-persistent-read' now features optional arguments for specifying
1671 the class to load, as well as a flag stating whether subclasses are allowed;
1672 if provided, other classes will be rejected by the reader. For
1673 compatibility with existing code, if the class is omitted only a
1676 **** New specialized reader for pulling in classes and signaling errors
1677 without evaluation of suspicious code.
1679 **** All slots that contain objects must have a :type. Slots with lists
1680 of objects must use a new type predicate for a list of an object type.
1682 *** Support for `find-function' and similar utilities, through the addition
1683 of filename support to generated symbols.
1685 ** Floating point functions now always return special values like NaN,
1686 instead of signaling errors, if given invalid args; e.g., (log -1.0).
1687 Previously, they returned NaNs on some platforms but signaled errors
1688 on others. The affected functions are acos, asin, tan, exp, expt,
1689 log, log10, sqrt, and mod.
1691 ** New fringe bitmap `exclamation-mark'.
1693 ** Miscellaneous changes to special forms and macros
1695 *** `defun' and `defmacro' are now macros rather than special forms.
1697 *** `kbd' is now a function rather than a macro.
1699 ** Miscellaneous new functions
1701 *** `set-temporary-overlay-map' sets up a temporary keymap that
1702 takes precedence over most other maps for a short while (normally one key).
1704 *** `autoloadp' tests if its argument is an autoloaded object.
1706 *** `autoload-do-load' performs the autoloading operation.
1708 *** `buffer-narrowed-p' tests if the buffer is narrowed.
1710 *** `file-name-base' returns a file name sans directory and extension.
1712 *** `function-get' fetches a function property, following aliases.
1714 *** `posnp' tests if an object is a `posn'.
1716 *** `system-users' returns the user names on the system.
1718 *** `system-groups' returns the group names on the system.
1720 *** `tty-top-frame' returns the topmost frame of a text terminal.
1722 ** The following functions and variables are obsolete:
1723 *** `automount-dir-prefix' (use `directory-abbrev-alist')
1724 *** `buffer-has-markers-at'
1725 *** `macro-declaration-function' (use `macro-declarations-alist')
1726 *** `window-system-version' (provides no useful information)
1727 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
1728 *** `query-replace-interactive'
1729 *** `font-list-limit' (has had no effect since Emacs < 23)
1732 * Changes in Emacs 24.3 on Non-Free Operating Systems
1734 ** Cygwin builds can use the native MS Windows user interface.
1735 Pass `--with-w32' to configure. The default remains the X11 interface.
1737 ** Two new functions are available in Cygwin builds:
1738 `cygwin-convert-file-name-from-windows' and
1739 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
1740 code to access the Cygwin file-name mapping machinery to convert
1741 between Cygwin and Windows-native file and directory names.
1743 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
1744 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
1745 `mouse-autoselect-window'.
1747 ** On MS Windows Vista and later Emacs now supports symbolic links.
1749 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
1750 support for libxml2, even if its presence is detected.
1752 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1754 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
1755 directories to the search path. You must add them yourself if you want them.
1758 * Changes in Emacs 24.2
1760 ** This is mainly a bug-fix release.
1763 * Installation Changes in Emacs 24.1
1765 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1766 to configure. Note that other libraries used by Emacs, RSVG and GConf,
1767 also depend on Gtk+. You can disable them with --without-rsvg and
1770 ** Emacs can be compiled with GnuTLS support.
1771 This happens by default if a suitably recent version of the library is
1772 found at build time. To prevent this, use the configure option
1773 `--without-gnutls'. See below for GnuTLS features.
1775 ** Emacs can be compiled with SELinux support.
1776 This happens by default if a suitably recent version of the library is
1777 found at build time. To prevent this, use the configure option
1778 `--without-selinux'. See below for SELinux features.
1780 ** Emacs can be compiled with ImageMagick support.
1781 This happens by default if a suitably recent version of the library is
1782 found at build time. To prevent this, use the configure option
1783 `--without-imagemagick'. See below for ImageMagick features.
1784 This feature is not available for the Nextstep or MS ports.
1786 ** Emacs can be compiled with libxml2 support.
1787 This happens by default if a suitably recent version of the library is
1788 found at build time. To prevent this, use the configure option
1789 `--without-xml2'. See below for libxml2 features.
1791 ** By default, the installed Info and man pages are compressed.
1792 You can disable this by configuring --without-compress-info.
1794 ** New configure option --with-wide-int.
1795 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
1796 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1799 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
1800 These provide no new functionality, they just remove the need to edit
1801 lib-src/Makefile by hand in order to use the associated features.
1803 ** New configure option --enable-use-lisp-union-type.
1804 This is only useful for Emacs developers to debug certain types of bugs.
1805 This is not a new feature; only the configure flag is new.
1807 ** The standalone programs digest-doc and sorted-doc are removed.
1808 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1810 ** The standalone program `fakemail' is removed.
1811 If you need it, feedmail.el provides a superset of the functionality.
1814 * Startup Changes in Emacs 24.1
1816 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
1817 command line arguments, and the EMACS_UNIBYTE environment variable, no
1818 longer have any effect. (They were declared obsolete in Emacs 23.)
1820 ** New command line option `--no-site-lisp' removes site-lisp directories
1821 from load-path. -Q now implies this. This option does not affect the
1822 EMACSLOADPATH environment variable (and hence has no effect for
1826 * Changes in Emacs 24.1
1830 *** Many packages now use the `completion-at-point' command,
1831 rather than implementing separate completion commands.
1833 *** `completion-at-point' now handles tags and semantic completion.
1835 *** Completion in a non-minibuffer now tries to detect the end of completion
1836 and pops down the *Completions* buffer accordingly.
1838 *** New option `completion-cycle-threshold' allows completion cycling.
1840 *** New option `completion-category-overrides' for overriding the
1841 default completion style in certain circumstances.
1843 *** New completion style `substring'.
1845 *** Completion of buffer names uses `substring' completion by default.
1847 *** The option `widget-complete-field' has been removed.
1851 *** The first time you try sending mail, Emacs asks for a mail method.
1852 This is implemented by a new default for `send-mail-function', which
1853 is `sendmail-query-once'. This offers to use the smtpmail package, or
1854 to use the old defaults relying on external mail facilities
1855 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1856 `mailclient-send-it' on Windows).
1858 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
1859 transfers the report to your desktop's preferred mail client, if there
1860 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
1863 *** See Changes in Specialized Modes and Packages for SMTPmail changes
1864 and Mail mode changes
1866 ** Emacs server and client changes
1868 *** New option `server-port' specifies the port for TCP Emacs servers.
1870 *** New emacsclient argument -q/--quiet suppresses some status messages.
1872 *** New emacsclient argument --frame-parameters specifies the frame
1873 parameters of any newly-created graphical frame.
1875 *** If emacsclient shuts down due to Emacs signaling an error,
1876 its exit status is 1.
1878 *** New emacsclient argument --parent-id ID.
1879 This opens a client frame in parent X window ID, via XEmbed, similar
1880 to the --parent-id argument to Emacs.
1882 ** Internationalization changes
1884 *** Emacs now supports display and editing of bidirectional text.
1885 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1886 displayed in the correct visual order as expected by users of those
1887 scripts. The display reordering is a "full bidirectionality" class
1888 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1889 with no RTL text should look exactly the same as before.
1891 **** New buffer-local variable `bidi-display-reordering'.
1892 To disable display reordering in a buffer, change this to nil.
1894 **** New buffer-local variable `bidi-paragraph-direction'.
1895 If nil (the default), Emacs determines the base direction of each
1896 paragraph from its text, as specified by the UBA. Setting the value
1897 to `right-to-left' or `left-to-right' forces a base direction on each
1900 Paragraphs with right-to-left base direction are displayed starting at
1901 the right window edge.
1903 *** Enhanced support for characters with no glyphs in available fonts,
1904 or, on text terminals, characters that cannot be encoded by the
1905 terminal coding system. The new option `glyphless-char-display-control'
1906 specifies how to display them: as a hexadecimal code in a box, a thin
1907 1-pixel space, an empty box, etc.
1909 *** New input methods for Farsi and Bulgarian
1910 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
1912 *** `nobreak-char-display' now also highlights Unicode hyphen chars
1913 (U+2010 and U+2011).
1915 *** New Hebrew translation of the Emacs Tutorial.
1916 Type `C-u C-h t' to choose it in case your language setup doesn't
1917 automatically select it.
1919 ** An Emacs Lisp package manager is now included.
1920 This is a convenient way to download and install additional packages,
1921 from a package repository at http://elpa.gnu.org.
1923 *** M-x list-packages shows a list of packages, which can be
1924 selected for installation.
1926 *** New command `describe-package', bound to `C-h P'.
1928 *** By default, all installed packages are loaded automatically when
1929 Emacs starts up. To disable this, set `package-enable-at-startup' to
1930 nil. To specify the packages to load, customize `package-load-list'.
1932 ** Custom theme changes
1934 *** New command `M-x customize-themes', which provides a convenient
1935 interface for enabling and disabling Custom themes.
1937 *** New option `custom-theme-load-path' is the load path for themes.
1938 Emacs no longer looks for Custom themes in `load-path'. The default
1939 value of `custom-theme-load-path' says to look for themes in
1940 `custom-theme-directory', followed by a subdirectory of
1941 `data-directory' named "themes/", which contains a small selection of
1942 built-in Custom themes.
1944 *** New option `custom-safe-themes' records known-safe theme files.
1945 If a theme is not in this list, Emacs queries before loading it, and
1946 offers to save the theme to `custom-safe-themes' automatically. By
1947 default, all themes included in Emacs are treated as safe.
1949 ** Improved GTK integration
1951 *** GTK scroll-bars are now placed on the right by default.
1952 The function `set-scroll-bar-mode' can change this.
1954 *** GTK tool bars can have just text, just images or images and text.
1955 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1956 the default is taken from desktop settings.
1958 *** GTK tool bars can be placed on any edge of the frame.
1959 The frame-parameter tool-bar-position controls this. It takes the
1960 values top, left, right or bottom. The Options => Show/Hide menu has
1963 *** The default colors for selected text (the `region' face) are taken
1964 from the GTK theme when Emacs is built with GTK.
1966 *** Emacs uses GTK tooltips by default if built with GTK.
1967 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
1969 ** Graphical interface changes
1971 *** On graphical displays, the mode-line no longer ends in dashes.
1972 Also, the first dash (which does not indicate anything) is just
1973 displayed as a space.
1975 *** `menu-bar-select-buffer-function' lets you choose another operation
1976 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1978 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
1979 built with Xft. These fonts can be set via X resources, for example:
1980 Emacs.pane.menubar.font: Courier-12
1984 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
1985 or if it receives a SIGINT signal in batch mode.
1987 *** `kill-emacs-hook' is now also run in batch mode.
1988 Third-party code which adds to `kill-emacs-hook' should check if they
1989 do the right thing in batch mode.
1991 ** Scrolling changes
1993 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
1994 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
1995 of buffer at first key-press (instead they move to top/bottom of buffer)
1996 when `scroll-error-top-bottom' is non-nil.
1998 *** New option `scroll-error-top-bottom' (see above).
2000 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2001 scroll a line instead of full screen.
2003 *** New property `scroll-command' should be set on a command's symbol to
2004 define it as a scroll command affected by `scroll-preserve-screen-position'.
2006 *** If you customize `scroll-conservatively' to a value greater than 100,
2007 Emacs will never recenter point in the window when it scrolls due to
2008 cursor motion commands or commands that move point (e.f., `M-g M-g').
2009 Previously, you needed to use `most-positive-fixnum' as the value of
2010 `scroll-conservatively' to achieve the same effect.
2012 *** "Aggressive" scrolling now honors the scroll margins.
2013 If you customize `scroll-up-aggressively' or
2014 `scroll-down-aggressively' and move point off the window, Emacs now
2015 scrolls the window so as to avoid positioning point inside the scroll
2018 ** Basic SELinux support has been added.
2019 This requires Emacs to be linked with libselinux at build time.
2021 *** Emacs preserves the SELinux file context when backing up.
2022 Also, the function `copy-file' has an extra optional argument for
2023 preserving SELinux context, and the return value of `backup-buffer'
2024 now includes the SELinux context.
2026 *** New functions `file-selinux-context' and `set-file-selinux-context'
2027 get and set the SELinux context of a file.
2031 *** `delete-by-moving-to-trash' now only affects commands that specify
2032 trashing. This avoids inadvertently trashing temporary files.
2034 *** Calling `delete-file' or `delete-directory' with a prefix argument
2035 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2037 ** File- and directory-local variable changes
2039 *** You can stop directory local vars from applying to subdirectories.
2040 Add an element (subdirs . nil) to the alist portion of any variables
2041 settings to indicate that the section should not apply to
2044 *** Directory local variables can apply to some file-less buffers.
2045 Affected modes include dired, vc-dir, and log-edit. For example,
2046 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2047 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2048 `hack-dir-local-variables-non-file-buffer' to support this.
2050 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2051 Instead, use "eval: (minor-mode 1)".
2053 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2054 to `inhibit-local-variables-regexps'. As the name suggests, it now
2055 applies to ALL file local variables, not just -*- lines. The
2056 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2061 *** The `quit-window' command now restores the last buffer displayed
2062 in the quitted window.
2064 *** Resizing an Emacs frame now preserves proportional window sizes,
2065 modulo restrictions like window minimum sizes and fixed-size windows.
2067 *** The behavior of `display-buffer' is now customizable in detail.
2069 **** New option `display-buffer-base-action' specifies a list of
2070 user-determined display "actions" (functions and optional arguments
2071 for choosing the displaying window).
2073 This takes precedence over the default display action, which is
2074 specified by `display-buffer-fallback-action'.
2076 **** New option `display-buffer-alist' maps buffer name regexps to
2077 display actions, taking precedence over `display-buffer-base-action'.
2079 *** New option `window-combination-limit'.
2080 The new option `window-combination-limit' allows to return the space
2081 obtained for resizing or creating a window more reliably to the window
2082 from which such space was obtained.
2084 *** New option `window-combination-resize'.
2085 The new option `window-combination-resize' allows to split a window that
2086 otherwise cannot be split because it's too small by stealing space from
2087 other windows in the same combination. Subsequent resizing or deletion
2088 of the window will resize all windows in the same combination as well.
2090 *** New option `frame-auto-hide-function' lets you choose between
2091 iconifying or deleting a frame when burying a buffer in a dedicated
2092 frame, or quitting a window showing a buffer in a frame of its own.
2094 *** New commands `maximize-window' and `minimize-window'.
2095 These maximize and minimize the size of a window within its frame.
2097 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2098 These functions allow to navigate through the live buffers that have
2099 been shown in a specific window.
2101 ** Minibuffer changes
2103 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2104 This is handy for minibuffer-only frames, and is also used for the feature
2105 where mouse-1 pops up *Messages*"', which can now easily be changed.
2107 *** Minibuffers set `truncate-lines' to nil.
2108 If you want to change the value to something else, you could use
2109 for example `minibuffer-setup-hook'.
2111 ** `auto-mode-case-fold' is now enabled by default.
2113 ** `backup-by-copying-when-mismatch' now defaults to t.
2115 ** New basic faces `error', `warning', `success'.
2116 These are used to highlight text indicating failure, caution or
2117 successful operation.
2119 ** New option `list-colors-sort' defines the color sort order
2120 for `list-colors-display'.
2122 ** The variable `focus-follows-mouse' now always defaults to nil.
2125 * Editing Changes in Emacs 24.1
2129 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2130 `isearch-yank-line'.
2132 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2133 `isearch-yank-kill'.
2135 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2137 ** New commands `count-words-region' and `count-words'.
2139 *** M-= is bound to `count-words-region', not `count-lines-region'.
2140 The `count-words-region' command, when called interactively, reports
2141 the number of lines, words, and characters in the region. It is a
2142 superset of the old `count-lines-region', which is now an obsolete
2145 ** The command `just-one-space' (M-SPC), if given a negative argument,
2146 also deletes newlines around point.
2150 *** New option `delete-active-region'.
2151 If non-nil, [delete] and DEL delete the region if it is active and no
2152 prefix argument is given. If set to `kill', those commands kill
2155 *** New command `delete-forward-char', bound to [delete].
2156 This is meant for interactive use, and obeys `delete-active-region'.
2157 The command `delete-char' does not obey `delete-active-region'.
2159 *** `delete-backward-char' is now a Lisp function.
2160 Apart from obeying `delete-active-region', its behavior is unchanged.
2161 However, the byte compiler now warns if it is called from Lisp; Lisp
2162 callers should use delete-char with a negative argument instead.
2164 *** The option `mouse-region-delete-keys' has been deleted.
2166 ** Selection changes.
2168 The default handling of clipboard and primary selections has been
2169 changed to conform with modern X applications. In short, most
2170 commands for killing and yanking text now use the clipboard, while
2171 mouse commands use the primary selection.
2173 In the following, we provide a list of these changes, followed by a
2174 list of steps to get the old behavior back if you prefer that.
2176 *** `select-active-regions' now defaults to t.
2177 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
2178 the kill ring. The selected text is put in the primary selection, if
2179 the system possesses a separate primary selection facility (e.g. X).
2181 **** `select-active-regions' also accepts a new value, `only'.
2182 This means to only set the primary selection for temporarily active
2183 regions (usually made by mouse-dragging or shift-selection);
2184 "ordinary" active regions, such as those made with C-SPC followed by
2185 point motion, do not alter the primary selection.
2187 **** `mouse-drag-copy-region' now defaults to nil.
2189 *** mouse-2 is now bound to `mouse-yank-primary'.
2190 This pastes from the primary selection, ignoring the kill-ring.
2191 Previously, mouse-2 was bound to `mouse-yank-at-click'.
2193 *** `x-select-enable-clipboard' now defaults to t on all platforms.
2195 *** `x-select-enable-primary' now defaults to nil.
2196 Thus, commands that kill text or copy it to the kill-ring (such as
2197 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2199 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
2200 exactly equivalent to M-w, C-w, and C-y respectively.
2202 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
2203 non-nil by default, as Windows does not support the primary selection
2204 between applications.
2206 *** To return to the previous behavior, do the following:
2208 **** Change `select-active-regions' to nil.
2209 **** Change `mouse-drag-copy-region' to t.
2210 **** Change `x-select-enable-primary' to t (on X only).
2211 **** Change `x-select-enable-clipboard' to nil.
2212 **** Bind `mouse-yank-at-click' to mouse-2.
2214 *** Support for X cut buffers has been removed.
2216 *** X clipboard managers are now supported.
2217 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
2219 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2220 in the current rectangle. With a prefix argument, this prompts for a
2221 number to count from and for a format string.
2223 ** `redisplay-dont-pause' now defaults to t.
2224 This makes Emacs feel more responsive to editing commands that arrive
2225 at high rate, e.g. if you lean on some key, because stopping redisplay
2226 in the middle (when this variable is nil) forces more expensive
2227 updates later on, and Emacs appears to be unable to keep up.
2229 ** The behavior of <TAB> for active regions in Text mode has changed.
2230 In Text and related modes, typing <TAB> (`indent-for-tab-command')
2231 when the region is active causes Emacs to indent all the lines in the
2232 region, aligning them with the line previous to the first line in the
2233 region (or with the left margin if there is no previous line).
2235 ** When `occur' is called with a prefix argument, matching strings are
2236 collected into the `*Occur*' buffer without line numbers. If there
2237 are parenthesized subexpressions in the specified regexp, `occur'
2238 reads replacement text that may contain \\& and \\N whose convention
2239 follows `replace-match'.
2242 * Changes in Specialized Modes and Packages in Emacs 24.1
2244 ** Archive Mode has basic support for browsing and updating 7z archives.
2248 *** BibTeX mode now supports biblatex.
2249 Use the variable `bibtex-dialect' to select different BibTeX dialects.
2250 `bibtex-entry-field-alist' is now an obsolete alias for
2251 `bibtex-BibTeX-entry-alist'.
2253 *** New command `bibtex-search-entries', bound to C-c C-a.
2255 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
2257 *** New variable `bibtex-search-entry-globally'.
2261 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
2263 *** The default browser used by the package is now the "xdg-open" program,
2264 on platforms that support it. This calls your desktop's preferred browser.
2268 *** Support for musical notes.
2270 *** Support for logarithmic units.
2272 *** No longer uses the tex prefix for TeX specific unit names when
2273 using TeX or LaTeX mode.
2275 *** New option to highlight selections using faces.
2277 *** `calc-histogram' has the option of using a vector to determine the bins.
2279 *** New "O" option prefix.
2281 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2283 ** Calendar, Diary, and Appt
2285 *** Diary entries can contain non-printing "comments".
2286 See the variable `diary-comment-start'.
2288 *** Appointments can specify their individual warning times.
2289 See the variable `appt-warning-time-regexp'.
2291 *** The function specified by `appt-disp-window-function' may be passed
2292 lists of arguments if multiple appointments are due at similar times.
2293 If you are using a custom function for this, you should update it.
2295 *** New function `diary-hebrew-birthday'.
2297 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2298 may no longer be nil, but must all be strings.
2300 *** The obsolete (since Emacs 22.1) method of enabling the appt
2301 package by adding `appt-make-list' to `diary-hook' has been removed.
2302 Use `appt-activate' instead.
2304 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
2305 appt-issue-message (use the function appt-activate)
2306 appt-visible/appt-msg-window (use the variable appt-display-format)
2308 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2309 view-diary-entries, list-diary-entries, show-all-diary-entries
2313 *** New feature to "guess" the style in an existing buffer.
2314 The main entry point is M-x c-guess.
2316 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2318 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
2319 Thus C-M-a will, by default, go to the beginning of the immediate function,
2322 *** "Macros with semicolons" can be registered for correct indentation.
2323 Where such a macro ends a line (no semicolon) the next statement is no longer
2324 parsed as a statement continuation.
2326 ** Comint and modes derived from it use the standard completion code.
2330 *** Compilation mode can be used without Font Lock mode.
2331 `compilation-parse-errors-function' is now obsolete.
2333 *** New variable `compilation-filter-start', which is bound while
2334 `compilation-filter-hook' runs. It records the start position of the
2335 text inserted by `compilation-filter'.
2337 *** `compilation-error-screen-columns' and `compilation-first-column'
2338 are obeyed in the editing buffer. So programming language modes can
2339 set them, whereas previously only the value in the *Compilation*
2344 *** Customize buffers now contain a search field.
2345 The search is performed using `customize-apropos'.
2346 To turn off the search field, set `custom-search-field' to nil.
2348 *** Options in customize group buffers start out hidden if not customized.
2349 Use the arrow to the left of the option name to toggle visibility.
2351 *** custom-buffer-sort-alphabetically now defaults to t.
2353 *** The color widget now has a "Choose" button, which allows you to
2354 choose a color via `list-colors-display'.
2358 *** It is now possible to access buses other than the default system
2361 *** The `dbus-register-method' and `dbus-register-property' functions
2362 optionally do not register names.
2364 *** The new function `dbus-register-service' registers a known service
2365 name on a D-Bus without also registering a property or a method.
2369 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2370 if called with a prefix argument, read a file name from the minibuffer
2371 instead of using the current buffer.
2373 *** The "dired local variables" feature of Dired-x is obsolete.
2374 The standard directory local variables feature replaces it.
2378 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2379 controlling attempts to autojoin a channel.
2381 *** New variable `erc-coding-system-precedence': If we use `undecided'
2382 as the server coding system, this variable will then be consulted.
2383 The default is to decode strings that can be decoded as utf-8 as
2384 utf-8, and do the normal `undecided' decoding for the rest.
2388 *** The default value of `eshell-directory-name' has changed
2389 to be an "eshell" directory in `user-emacs-directory'.
2390 The old "~/.eshell/" directory is still used if it exists, though.
2394 *** The M-x gdb command now uses the GDB Machine Interface protocol.
2395 It now supports multithread non-stop debugging and simultaneous
2396 debugging of several threads.
2400 *** RET (`image-toggle-animation') toggles animation, if applicable.
2401 Animation plays once, unless the option `image-animate-loop' is non-nil.
2405 *** New command M-x info-display-manual displays a named Info manual.
2406 If that manual is already visited in some Info buffer, it displays
2407 that buffer. (This is handy if you have many manuals in many *info*
2408 buffers, and don't remember the name of the buffer visiting the manual
2409 you want to consult.) Otherwise, it loads and displays the manual.
2411 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2412 This is for compatibility with the stand-alone Info reader program,
2413 and also because `Info-edit' is a rarely used command that is disabled
2416 ** Mail mode changes (not Message mode)
2418 *** New command M-x mail-add-attachment for adding MIME attachments
2420 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2421 (Its name is misleading, since it has nothing to do with MIME
2422 attachments.) The old name is now an obsolete alias to the new name.
2424 ** MH-E has been updated to MH-E version 8.3.1.
2425 See MH-E-NEWS for details.
2427 ** Modula-2 mode provides auto-indentation.
2429 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
2431 ** nXML mode no longer binds C-RET to `nxml-complete'.
2432 Completion is now performed via `completion-at-point', bound to C-M-i
2433 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2434 default), this performs tag completion.
2436 ** Org mode has been updated to version 7.8.09.
2437 See ORG-NEWS for details.
2439 ** Prolog mode has been completely revamped, with lots of additional
2440 functionality such as more intelligent indentation, electricity,
2441 support for more variants, including Mercury, and a lot more.
2445 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
2446 in the Rmail incoming message.
2448 *** The variable `rmail-message-filter' no longer has any effect.
2449 This change was made in Emacs 23.1 but was not advertised at the time.
2450 Try using `rmail-show-message-hook' instead.
2454 *** M-x shell prompts for the shell path name if the default directory
2455 is a remote file name and neither the environment variable $ESHELL nor
2456 the variable `explicit-shell-file-name' is set.
2458 *** TAB is now bound to the standard `completion-at-point' command,
2459 which now implements the pcomplete rules for shell command completion.
2463 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
2464 if the mail server supports them. This uses either built-in GnuTLS
2465 support, or the starttls.el library. Customize `smtpmail-stream-type'
2468 *** The variable `smtpmail-auth-credentials' has been removed.
2469 By default, the information is now stored in the file ~/.authinfo.
2470 This was the default value of smtpmail-auth-credentials. If you had
2471 customized smtpmail-auth-credentials to a list of user names and
2472 passwords, those settings are not used. During your first connection
2473 to the smtp server, Emacs will prompt for the user name and password,
2474 and offer to save them to ~/.authinfo. Or you can manually copy the
2475 credentials to ~/.authinfo. For example, if you had
2477 (setq smtpmail-auth-credentials
2478 '(("mail.example.org" 25 "jim" "s!cret")))
2480 then the equivalent line in ~/.authinfo would be
2482 machine mail.example.org port 25 login jim password s!cret
2484 See the auth-source manual for more information, e.g. on encrypting
2485 the credentials file.
2487 *** The variable `smtpmail-starttls-credentials' has been removed.
2488 If you had that set, you need to put
2490 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2492 in your ~/.authinfo file instead.
2494 *** SMTPmail defaults to using the address in the From: header as the
2495 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2496 to the address you wish to use instead.
2500 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2501 and `sql-oracle-scan-on'.
2503 *** New options controlling prompting for login parameters.
2504 Each supported product has a custom variable `sql-*-login-params',
2505 which is a list of the parameters to be prompted for before a
2506 connection is established.
2508 *** The command `sql-product-interactive' now takes a prefix argument,
2509 which causes it to prompt for an SQL product.
2511 *** Product-specific SQL interactive commands now take prefix arguments.
2512 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2513 given a prefix argument, prompt for a name for the SQL interactive
2514 buffer. This reduces the need for calling `sql-rename-buffer'.
2516 *** SQL interactive modes suppress command continuation prompts, and
2517 replace tabs with spaces. The first change impacts multiple line SQL
2518 statements entered with C-j between each line, statements yanked into
2519 the buffer and statements sent with `sql-send-*' functions. The
2520 second prevents the MySQL and Postgres interpreters from listing
2521 object name completions when sent text via `sql-send-*' functions.
2523 *** New command `sql-connect' starts a predefined SQLi session,
2524 using the login parameters from `sql-connection-alist'.
2526 *** New "Save Connection" menu item in SQLi buffers.
2527 This gathers the login params specified for the SQLi session, if it
2528 was not started by a connection, and saves them as a new connection.
2530 *** New commands for listing database objects and details:
2531 sql-list-all and sql-list-table.
2533 *** An API for manipulating SQL product definitions has been added.
2537 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
2541 *** New inline access method "ksu" (kerberized su).
2543 *** The following access methods are discontinued: "ssh1_old",
2544 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
2546 *** The user option `remote-file-name-inhibit-cache' controls whether
2547 remote file attributes are cached for better performance.
2549 *** The option `ange-ftp-binary-file-name-regexp' has changed its
2550 default value to "".
2552 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
2553 for remote machines which support SELinux.
2555 ** New function `url-queue-retrieve', which behaves like url-retrieve,
2556 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2557 the degree of parallelism.
2559 ** VC and related modes
2561 *** Support for pulling on distributed version control systems.
2562 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2563 supported (currently with Bzr, Git, and Mercurial), to update the
2564 current branch and working tree. A prefix argument means to prompt
2565 the user for specifics, e.g. a pull location.
2567 *** `vc-update' is now an alias for `vc-pull'.
2569 *** Support for merging on distributed version control systems.
2570 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2571 is supported (currently with Bzr, Git, and Mercurial), to merge
2572 changes from another branch into the current one. It prompts for
2573 specifics, e.g. a merge source.
2575 *** New option `vc-revert-show-diff' controls whether `vc-revert'
2576 shows a diff while querying the user. It defaults to t.
2578 *** Log entries in some Log View buffers can be toggled to display a
2579 longer description by typing RET (log-view-toggle-entry-display).
2580 This is currently supported for Bzr, Git, and Mercurial (to support
2581 another backend, define a `log-view-expanded-log-entry-function').
2582 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
2583 use this to display the full log entry for the revision at point.
2585 *** New command `vc-ediff' allows visual comparison of two revisions
2586 of a file similar to `vc-diff', but using ediff backend.
2588 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
2589 this was not advertised at the time.
2591 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2592 Since Emacs 23, it has done the same thing as `toggle-read-only', but
2593 this was not advertised at the time.
2599 *** erc-hecomplete.el (use erc-pcomplete.el instead)
2601 *** partial-completion-mode (complete.el) is obsolete.
2602 You can get a comparable behavior with:
2603 (setq completion-styles '(partial-completion initials))
2604 (setq completion-pcm-complete-word-inserts-delimiters t)
2606 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2608 *** pgg is obsolete (use EasyPG instead).
2610 *** sregex.el is obsolete, since rx.el is a strict superset.
2612 *** s-region.el and pc-select.el are obsolete.
2613 They are superseded by shift-select-mode, enabled by default since 23.1.
2615 *** vc-mcvs.el is obsolete (for lack of a maintainer).
2619 *** The Landmark game is now invoked with `landmark', not `lm'.
2620 Its functions and variables have been similarly renamed.
2622 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
2623 (This interfered with cua-mode.)
2625 *** f90.el has some support for Fortran 2008 syntax.
2627 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
2629 *** New command `nato-region' converts text to NATO phonetic alphabet.
2632 * New Modes and Packages in Emacs 24.1
2634 ** Occur Edit mode applies edits made in *Occur* buffers to the
2635 original buffers. It is bound to "e" in Occur mode.
2637 ** New global minor mode electric-pair-mode.
2638 When enabled, typing an open parenthesis automatically inserts the
2639 matching closing one.
2641 ** New global minor mode electric-indent-mode.
2642 When enabled, typing certain characters triggers reindentation.
2643 Major modes wishing to use this can set electric-indent-chars or
2644 electric-indent-functions.
2646 ** New global minor mode electric-layout-mode.
2647 When enabled, typing certain characters automatically inserts newlines.
2648 Major modes wishing to use this can set electric-layout-rules.
2650 ** tabulated-list.el provides a generic major mode for tabulated data,
2651 from which other modes can be derived.
2653 ** pcase.el provides the ML-style pattern matching macro `pcase'.
2655 ** secrets.el is an implementation of the Secret Service API, an
2656 interface to password managers like GNOME Keyring or KDE Wallet. The
2657 Secret Service API requires D-Bus for communication. The command
2658 `secrets-show-secrets' offers a buffer with a visualization of the
2661 ** notifications.el provides an implementation of the Desktop
2662 Notifications API. It requires D-Bus for communication.
2664 ** soap-client.el supports access to SOAP web services from Emacs.
2665 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2667 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
2669 ** New emacs-lock.el package.
2670 The previous version has been moved to obsolete/old-emacs-lock.el.
2671 Now, there is a proper minor mode `emacs-lock-mode'. Protection
2672 against exiting Emacs and killing the buffer can be set separately.
2673 The mechanism for automatically turning off protection for buffers
2674 with dead inferior processes has been generalized.
2677 * Incompatible Lisp Changes in Emacs 24.1
2679 ** Passing a nil argument to a minor mode function call now ENABLES
2680 the minor mode unconditionally. This is so that you can write e.g.
2682 (add-hook 'text-mode-hook 'foo-mode)
2684 to enable foo-mode in Text mode buffers, removing the need for
2685 `turn-on-foo-mode' style functions. This affects all mode commands
2686 defined by `define-minor-mode'. If called interactively, the mode
2687 command still toggles the minor mode.
2689 ** The return value of `backup-buffer' has changed.
2690 It is now a list of three elements, where the second element is a list
2691 describing the original file's SELinux context. If Emacs or the
2692 system lacks SELinux support, the context list is (nil nil nil nil).
2693 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
2695 ** `char-direction-table' and the `char-direction' function were deleted.
2696 They were buggy and inferior to the new support of bidirectional
2697 editing introduced in Emacs 24. If you need the bidirectional
2698 properties of a character, use `get-char-code-property' with the last
2699 argument `bidi-class'.
2701 ** `copy-directory' now copies the source directory as a subdirectory
2702 of the target directory, if the latter is an existing directory. The
2703 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2704 the contents directly into a pre-existing target directory.
2706 ** For mouse click input events in the text area, the Y pixel
2707 coordinate in the POSITION list now counts from the top of the text
2708 area, excluding any header line. Previously, it counted from the top
2711 ** Support for "old-style" backquotes, obsolete for 10+ years, has
2712 been further reduced. Now a backquote not followed by a space is
2713 always treated as a "new-style" backquote. Please remove all
2714 "old-style" backquotes from your code. If your code uses backquotes
2715 as documented in the Elisp manual, and compiles without warning, then
2716 you have nothing to do in this regard. Code not following the
2717 appropriate conventions may fail to compile.
2719 The most common cause of trouble seems to be an old-style backquote
2720 followed by a newline. Another cause of trouble is vector notation
2721 for key sequence notation: instead of [(control ,)] and [(control ')],
2722 you should write [(control ?,)] and [(control ?')], which will work in
2725 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2726 was not advertised at the time. The function `custom-initialize-delay'
2727 replaced all known uses.
2729 ** `view-buffer' now treats special mode-class in the same way that
2730 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2731 major mode is special).
2733 ** Menu and tool bar changes
2735 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
2736 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2737 With these alist entries omitted, `make-frame' checks the value of the
2738 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2739 a menu-bar or tool-bar, respectively. If the alist entries are added,
2740 they override the value of `menu-bar-mode'/`tool-bar-mode'.
2742 *** The menu bar bindings's caches are not used any more.
2743 Use (where-is-internal <def> nil t) instead.
2745 ** Regions created by mouse dragging are now normal active regions,
2746 similar to those created by shift-selection (see Selection changes
2747 above). In previous Emacs versions, these regions were delineated by
2748 `mouse-drag-overlay'; that variable has been removed.
2750 ** The fourth argument of `filter-buffer-substring' has been removed.
2751 If you want to remove text properties from the final result, simply
2752 pass the result through substring-no-properties.
2754 ** cl.el no longer provides `cl-19'.
2756 ** The following obsolete functions and aliases have been removed
2757 (the appropriate new function is given in parentheses; "not needed"
2758 means you can just remove all calls to the function in question):
2760 *** `comint-kill-output' (`comint-delete-output')
2761 *** `decompose-composite-char' (`char-to-string')
2762 *** `outline-visible' (`outline-invisible-p')
2763 *** `internal-find-face' (`facep')
2764 *** `internal-get-face' (`facep and check-face')
2765 *** `frame-update-faces' (not needed)
2766 *** `frame-update-face-colors' (`frame-set-background-mode')
2767 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2768 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
2769 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2770 *** `x-make-font-bold-italic' (`make-face-bold-italic')
2771 *** `x-make-font-unbold' (`make-face-unbold')
2772 *** `x-make-font-unitalic' (`make-face-unitalic')
2773 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2774 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2775 *** `iswitchb-default-keybindings' (`iswitchb-mode')
2776 *** `char-bytes' (== 1)
2777 *** `isearch-return-char' (`isearch-printing-char')
2778 *** `make-local-hook' (not needed)
2779 *** `set-screen-height' (`set-frame-height')
2780 *** `set-screen-width' (`set-frame-width')
2782 ** The following obsolete variables and varaliases have been removed
2783 (the appropriate new variable is given in parentheses):
2785 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2786 *** `vc-header-alist' (`vc-BACKEND-header')
2787 *** `directory-sep-char' (== ?/)
2788 *** `font-lock-defaults-alist' (`font-lock-defaults')
2789 *** `e' (`float-e').
2791 ** The following obsolete files were removed:
2792 sc.el, x-menu.el, rnews.el, rnewspost.el
2794 ** The format of the finder-inf.el file has changed, since the Finder
2795 mechanism is now based on the package system. The variable
2796 `finder-package-info' is replaced by `package--builtins' and
2797 `finder-keywords-hash'.
2799 ** When generating autoloads, `update-directory-autoloads' no longer
2800 assumes every inspected file is in your `load-path'. It instead
2801 generates relative names according to the current `load-path'.
2804 * Lisp Changes in Emacs 24.1
2806 ** Code can now use lexical scoping by default instead of dynamic scoping.
2807 The `lexical-binding' variable enables lexical scoping for local
2808 variables. It is typically set via a file-local variable in the first
2809 line of the file, in which case it applies to all the code in that
2812 *** `eval' takes a new optional argument `lexical' to choose the new lexical
2813 binding instead of the old dynamic binding mode.
2815 *** Lexically scoped interpreted functions are represented with a new form
2816 of function value which looks like (closure ENV ARGS &rest BODY).
2818 *** New macro `letrec' to define recursive local functions.
2820 *** `defvar' and `defconst' now mark the variable as special (dynamic).
2821 So do `defcustom' and other forms that call `defvar' as a subroutine.
2823 *** New function `special-variable-p' to check whether a variable is
2824 declared as dynamically bound.
2826 *** The form ((lambda ...) ...) is deprecated.
2828 ** An Emacs Lisp testing tool is now included.
2829 Emacs Lisp developers can use this tool to write automated tests for
2830 their code. See the ERT info manual for details.
2832 ** Changes for bidirectional display and editing
2834 *** New function `current-bidi-paragraph-direction'.
2835 This returns the base direction of the paragraph at point.
2837 *** New function `bidi-string-mark-left-to-right'.
2838 Given a string containing characters from right-to-left scripts, this
2839 function returns another string which can be safely inserted into a
2840 buffer, such that any following text will be always displayed to the
2841 right of that string. (This works by appending an invisible Unicode
2842 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
2844 This is useful when the buffer has overall left-to-right paragraph
2845 direction and you need to insert a string whose contents are not known
2846 in advance, without disrupting the layout of the line.
2850 *** Window tree functions are accessible in Elisp.
2851 Functions are provided to return the parent, siblings or child windows
2852 of any window including internal windows (windows not associated with a
2853 buffer) in the window tree.
2855 **** New function `window-valid-p' gives non-nil for live and internal
2858 **** Window manipulation can deal with internal windows.
2859 Many window handling functions like `split-window', `delete-window', or
2860 `delete-other-windows' as well as the window resizing functions can now
2861 act on any window including internal ones.
2863 *** window-total-height/-width vs window-body-height/-width.
2864 The function `window-height' has been renamed to `window-total-height'
2865 and `window-width' has been renamed to `window-body-width'. The old
2866 names are provided as aliases. Two new functions `window-total-width'
2867 and `window-body-height' are provided.
2869 *** Window parameters specific to window handling functions.
2870 For each window you can specify a parameter to override the default
2871 behavior of a number of functions like `split-window', `delete-window'
2872 and `delete-other-windows'. The variable `ignore-window-parameters'
2873 allows to ignore processing such parameters.
2875 *** New semantics of third argument of `split-window'.
2876 The third argument of `split-window' has been renamed to SIDE and can be
2877 set to any of the values 'below, 'right, 'above, or 'left to make the
2878 new window appear on the corresponding side of the window that shall be
2879 split. Any other value of SIDE will cause `split-window' to split the
2880 window into two side-by-side windows as before.
2882 *** Window resizing functions.
2883 A new standard function for resizing windows called `window-resize' has
2884 been introduced. This and all other functions for resizing windows no
2885 longer delete any windows when they become too small.
2887 *** Deleting the selected window now selects the most recently selected
2888 live window on that frame instead.
2890 *** `adjust-window-trailing-edge' adjustments.
2891 `adjust-window-trailing-edge' can now deal with fixed-size windows and
2892 is able to resize other windows if a window adjacent to the trailing
2893 edge cannot be shrunk any more. This makes its behavior more similar to
2894 that of Emacs 21 without compromising, however, its inability to delete
2895 windows which was introduced in Emacs 22.
2897 *** Window-local buffer lists.
2898 Windows now have local buffer lists. This means that removing a buffer
2899 from display in a window will preferably show the buffer previously
2900 shown in that window with its previous window-start and window-point
2901 positions. This also means that the same buffer may be automatically
2902 shown twice even if it already appears in another window.
2904 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2905 which if non-nil requires the buffer to be displayed in the currently
2906 selected window, signaling an error otherwise. If nil, another window
2907 can be used, e.g. if the selected one is strongly dedicated.
2909 *** `split-window-vertically' and `split-window-horizontally' renamed
2910 to `split-window-below' and `split-window-right' respectively.
2911 The old names are kept as aliases.
2915 **** The second arg to `display-buffer' and `pop-to-buffer' is now
2916 named ACTION, and takes a display action of the same form as
2917 `display-buffer-base-action' (see Changes, above). A non-nil,
2918 non-list value is treated specially, as the old meaning.
2920 **** New variable `display-buffer-overriding-action'.
2922 **** The procedure of `display-buffer' etc. to choose a window is
2923 determined by combining `display-buffer-overriding-action',
2924 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2925 and `display-buffer-fallback-action'. The second and fourth of these
2926 are user-customizable variables.
2928 See the docstring of `display-buffer' for details.
2930 *** New functions `window-state-get' and `window-state-put'.
2931 These functions allow to save and restore the state of an arbitrary
2932 frame or window as an Elisp object.
2936 *** New variable `completion-extra-properties' used to specify extra
2937 properties of the current completion:
2938 - :annotate-function, same as the old completion-annotate-function.
2939 - :exit-function, function to call after completion took place.
2941 *** Functions on `completion-at-point-functions' can return any of the
2942 properties valid for `completion-extra-properties'.
2944 *** `completion-annotate-function' is obsolete.
2946 *** New `metadata' method for completion tables. The metadata thus returned
2947 can specify various details of the data returned by `all-completions':
2948 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2949 used to select a style in completion-category-overrides.
2950 - `annotation-function' to add annotations in *Completions*.
2951 - `display-sort-function' to specify how to sort entries in *Completions*.
2952 - `cycle-sort-function' to specify how to sort entries when cycling.
2954 *** `minibuffer-local-filename-must-match-map' is not used any more.
2955 Instead, the bindings in `minibuffer-local-filename-completion-map'
2956 are combined with `minibuffer-local-must-match-map'.
2958 *** New variable `completing-read-function' allows overriding the
2959 behavior of `completing-read'.
2961 ** `glyphless-char-display' can now distinguish between graphical and
2962 text terminal display, via a char-table entry that is a cons cell.
2964 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
2965 Instead, the offending function is removed.
2969 *** New function `run-hook-wrapped' for running an abnormal hook by
2970 passing the hook functions as arguments to a "wrapping" function.
2971 Like `run-hook-with-args-until-success', it stops at the first
2972 non-nil return value.
2974 *** New macro `with-wrapper-hook' for running an abnormal hook as a
2975 set of "wrapping" filters, similar to around advice.
2976 (A version of this macro was actually added in Emacs 23.2 but was not
2977 advertised at the time.)
2981 *** New macro `condition-case-unless-debug' (this was actually added in
2982 Emacs 23.1 as condition-case-no-debug, but not advertised)
2984 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
2986 *** Variable `stack-trace-on-error' removed.
2988 *** The debugger can now "continue" from an error, which means it will
2989 jump to the error handler as if the debugger had not been invoked
2990 instead of jumping all the way to the top-level.
2992 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2993 This can be useful when `inhibit-quit' is set.
2995 ** The new function `server-eval-at' allows evaluation of Lisp forms on
2996 named Emacs server instances.
2998 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
2999 to redirect STDOUT to a file.
3001 ** The function `format-time-string' now supports the %N directive,
3002 for higher-resolution time stamps.
3004 ** New input reading functions
3006 *** New function `read-char-choice' reads a restricted set of
3007 characters, discarding any inputs not inside the set.
3009 *** The command `read-color' now requires a match for a color name
3010 or RGB triplet, instead of signaling an error if the user provides
3013 **** `facemenu-read-color' is now an alias for `read-color'.
3015 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3016 The variable is now used to load all kind of supported dynamic libraries,
3017 not just image libraries. The previous name is still available as an
3020 ** Syntax parsing changes
3022 *** New variable `syntax-propertize-function'.
3023 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3024 This allows syntax-table properties to be set independently from font-lock:
3025 just call syntax-propertize to make sure the text is propertized.
3026 Together with this new variable come a new hook
3027 syntax-propertize-extend-region-functions, as well as two helper functions:
3028 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3029 as-is; and syntax-propertize-rules which provides a new way to specify
3032 *** Syntax tables support a new "comment style c" additionally to style b.
3034 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3036 ** frame-local variables cannot be let-bound any more.
3038 ** Major and minor mode changes
3040 *** `set-auto-mode' now respects mode: local variables at the end of files,
3041 as well as those in the -*- line.
3043 *** `prog-mode' is a new major mode from which programming modes
3046 **** `prog-mode-hook' can be used to enable features for programming
3047 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3048 on-the-fly spell checking for comments and strings.
3050 **** New minor modes `prettify-symbols-mode' and
3051 `global-prettify-symbols-mode' let the user enable symbol
3052 prettification (replacing a string like "lambda" with the Greek lambda
3055 *** New hook `change-major-mode-after-body-hook', run by
3056 `run-mode-hooks' just before any other mode hooks.
3058 *** Enabled globalized minor modes can be disabled in specific major modes.
3059 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3060 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3062 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3064 ** File-handling changes
3066 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3067 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3068 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3069 argument is supplied (see Trash changes, above).
3071 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3073 ** Tool-bars can display separators.
3074 Tool-bar separators are handled like menu separators in menu-bar maps,
3075 i.e. via menu entries of the form `(menu-item "--")'.
3079 *** Animated images support (currently animated gifs only).
3081 **** `image-animated-p' returns non-nil if an image can be animated.
3083 **** `image-animate' animates a supplied image spec.
3085 **** `image-animate-timer' returns the timer object for an image that
3088 *** `image-extension-data' has been renamed to `image-metadata'.
3089 The old name is an obsolete alias to the new one.
3091 *** Image mode can view any image type that ImageMagick supports.
3092 This requires Emacs to be built with ImageMagick support.
3094 **** New function `imagemagick-types', defined if ImageMagick support
3095 is enabled, returns a list of image file extensions that your
3096 ImageMagick installation supports.
3098 **** New function `imagemagick-register-types' enables ImageMagick
3099 image types in Image mode and in `create-image' and other helper
3102 **** New option `imagemagick-types-inhibit' excludes certain
3103 ImageMagick image types from `imagemagick-register-types'.
3105 **** With ImageMagick support, there are extra Image mode commands to
3106 resize and rotate images: `image-transform-fit-to-height',
3107 `image-transform-fit-to-width', `image-transform-set-rotation', and
3108 `image-transform-set-scale'.
3110 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3111 passes it to the mail user agent function. This argument specifies an
3112 action for returning to the caller after finishing with the mail. For
3113 example, this is used by Rmail to optionally delete a mail window.
3115 ** XML and HTML parsing
3116 If Emacs is compiled with libxml2 support, there are two new
3117 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3118 and `libxml-parse-xml-region' (which parses XML). Both return an
3119 Emacs Lisp parse tree.
3121 ** Networking and encryption changes
3123 *** `open-network-stream' can now be used to open an encrypted stream.
3124 It now accepts an optional `:type' parameter for initiating a TLS
3125 connection, directly or via STARTTLS. To do STARTTLS, additional
3126 parameters (`:end-of-command', `:success', `:capabilities-command')
3127 must also be supplied.
3129 *** New library gnutls.el.
3130 The new function `gnutls-available-p' returns non-nil if Emacs is
3131 built with GnuTLS support. The main entry points are
3132 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3133 these functions through `open-network-stream', because that can
3134 upgrade connections through STARTTLS opportunistically or use plain
3135 SSL, depending on your needs. For debugging, set `gnutls-log-level'
3138 *** New primitive `secure-hash' that supports many secure hash algorithms:
3139 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3140 sha1.el has been removed. The `sha1' feature is provided by default.
3144 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3146 ** Progress reporters can now "spin".
3147 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3148 now be nil, or omitted. This makes a "non-numeric" reporter. Each
3149 time you call `progress-reporter-update' on that progress reporter,
3150 with a nil or omitted VALUE argument, the reporter message is
3151 displayed with a "spinning bar".
3153 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
3154 being reverted, even if the buffer has a local `revert-buffer-function'.
3156 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3157 If delayed-warnings-list is non-nil, the command loop calls
3158 `delayed-warnings-hook' after `post-command-hook'. At present, this
3159 is only used by Emacs on some platforms to display warnings during
3160 startup, which might otherwise not be noticed. This uses the
3161 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
3163 ** rx.el has a new `group-n' construct for explicitly numbered groups.
3165 ** New function `make-composed-keymap' that constructs a new keymap
3166 from multiple input maps. You can use this to make a keymap that
3167 inherits from multiple maps, eg:
3168 (set-keymap-parent newmap (make-composed-keymap othermap parent))
3170 ** New function `string-prefix-p'.
3171 (This was actually added in Emacs 23.2 but was not advertised at the time.)
3173 ** New reader macro ## that stands for the empty symbol.
3174 This means that the empty symbol can now be read back. Also, #: by itself
3175 (when not immediately followed by a possible symbol character) stands for
3176 an empty uninterned symbol.
3178 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
3180 ** The following functions and variables are obsolete:
3182 *** `tooltip-use-echo-area' is obsolete.
3183 Rather than setting this to t, disable Tooltip mode instead.
3185 *** buffer-substring-filters is obsolete.
3186 Use `filter-buffer-substring-functions' instead.
3188 *** `byte-compile-disable-print-circle' is obsolete.
3190 *** `deferred-action-list' and `deferred-action-function' are obsolete.
3191 Use `post-command-hook' instead.
3193 *** `font-lock-maximum-size' is obsolete.
3196 * Changes in Emacs 24.1 on Non-Free Operating Systems
3198 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
3199 and also when HOME is set to C:\ by default.
3201 ** New configure.bat options
3203 *** --enable-checking builds Emacs with extra runtime checks.
3205 *** --distfiles specifies files to be included in binary distribution.
3207 *** --without-gnutls disables automatic GnuTLS detection.
3209 *** --lib for general library linkage, works with the USER_LIBS build variable.
3211 ** New make target `dist' to create binary distribution for MS Windows.
3213 ** The Lisp function `w32-default-color-map' is now obsolete.
3214 (It is only used internally in the Emacs C code.)
3216 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3217 reappear on mouse-over. (Requires OS X 10.6 or later.)
3219 ** On Mac OS X, dragging a file into Emacs visits the file, like on
3220 other platforms, rather than inserting its contents into the buffer.
3223 ----------------------------------------------------------------------
3224 This file is part of GNU Emacs.
3226 GNU Emacs is free software: you can redistribute it and/or modify
3227 it under the terms of the GNU General Public License as published by
3228 the Free Software Foundation, either version 3 of the License, or
3229 (at your option) any later version.
3231 GNU Emacs is distributed in the hope that it will be useful,
3232 but WITHOUT ANY WARRANTY; without even the implied warranty of
3233 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3234 GNU General Public License for more details.
3236 You should have received a copy of the GNU General Public License
3237 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
3242 paragraph-separate: "[
\f]*$"