1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2010-2014 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 documentation updates are complete.
19 (This means all relevant manuals in doc/ AND lisp doc-strings.)
20 --- means no change in the manuals is needed.
21 When you add a new item, use the appropriate mark if you are sure it applies,
22 otherwise leave it unmarked.
25 * Installation Changes in Emacs 24.5
28 ** Building Emacs now requires GNU make.
31 * Startup Changes in Emacs 24.5
34 * Changes in Emacs 24.5
37 ** The default value of `history-length' has increased to 100.
40 ** The new variable `term-file-aliases' replaces some files from lisp/term.
41 The function `tty-run-terminal-initialization' consults this variable
42 when deciding what terminal-specific initialization code to run.
45 ** New variable `system-configuration-features', listing some of the
46 main features that Emacs was compiled with. This is mainly intended
47 for use in Emacs bug reports.
50 * Editing Changes in Emacs 24.5
53 * Changes in Specialized Modes and Packages in Emacs 24.5
56 ** The Rmail commands d, C-d and u now handle repeat counts
57 to delete or undelete multiple messages.
59 ** The URL package accepts now the protocols "ssh", "scp" and "rsync".
60 When `url-handler-mode' is enabled, file operations for these
61 protocols as well as for "telnet" and "ftp" are passed to Tramp.
69 * New Modes and Packages in Emacs 24.5
72 * Incompatible Lisp Changes in Emacs 24.5
75 * Lisp Changes in Emacs 24.5
78 ** You can specify a function's interactive-only property via `declare'.
79 However you specify it, the property affects `describe-function' output.
82 * Changes in Emacs 24.5 on Non-Free Operating Systems
85 * Installation Changes in Emacs 24.4
88 ** Emacs can now be compiled with ACL support.
89 This happens by default if a suitable support library is found at
90 build time, like libacl on GNU/Linux. To prevent this, use the
91 configure option `--disable-acl'. See below for related features.
94 ** Emacs can now be compiled with file notification support.
95 This happens by default if a suitable system library is found at
96 build time. To prevent this, use the configure option
97 `--without-file-notification'. See below for file-notify features.
98 This feature is not available for the Nextstep port.
101 ** Emacs can now be compiled with zlib support.
102 This happens by default if zlib is present, which it normally is.
103 To prevent this, use the configure option `--without-zlib'.
104 This provides the function `zlib-decompress-region'; see below for details.
107 ** The configure option `--without-compress-info' has been generalized,
108 and renamed to `--without-compress-install'. It now prevents compression
109 of _any_ files during installation.
112 ** The configure option `--with-crt-dir' has been removed.
113 It is no longer needed, as the crt*.o files are no longer linked specially.
116 ** Directories passed to configure option `--enable-locallisppath' are
117 no longer created during installation.
120 ** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
121 This requires pkg-config to be available at build time.
124 * Startup Changes in Emacs 24.4
127 ** When initializing `load-path', an empty element in the EMACSLOADPATH
128 environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
129 "/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
130 load-path (the one that would have been used if EMACSLOADPATH was unset).
131 This makes it easier to _extend_ the load-path via EMACSLOADPATH
132 (previously, EMACSLOADPATH had to specify the complete load-path,
133 including the defaults). (In older versions of Emacs, an empty element
134 was replaced by ".", so use an explicit "." now if that is what you want.)
137 ** The -L option, which normally prepends its argument to load-path,
138 will instead append, if the argument begins with `:' (or `;' on MS Windows;
139 i.e., `path-separator').
142 ** If you use either site-load.el or site-init.el to customize the dumped
143 Emacs executable, any changes to `load-path' that these files make
144 will no longer be present after dumping. To affect a permanent change
145 to `load-path', use the `--enable-locallisppath' option of `configure'.
148 ** The user option `initial-buffer-choice' can now specify a function
149 to set up the initial buffer.
152 * Changes in Emacs 24.4
155 ** New function `zlib-decompress-region', which decompresses gzip- and
156 zlib-format compressed data using built-in zlib support, if available.
159 ** New option `gnutls-verify-error', if non-nil, means that Emacs
160 should reject SSL/TLS certificates that GnuTLS determines as invalid.
161 (This option defaults to nil at present, but this is expected to change
162 in a future release.)
165 ** Emacs now supports menus on text-mode terminals.
166 If the terminal supports a mouse, clicking on the menu bar, or on
167 sensitive portions of the mode line or header line, will drop down the
168 menu defined at that position. Likewise, clicking C-mouse-2 or
169 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
172 If the text terminal does not support a mouse, you can activate the
173 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
175 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
176 customize the option `tty-menu-open-use-tmm' to a non-nil value.
177 (Typing M-` always invokes `tmm-menubar', even if `tty-menu-open-use-tmm'
181 ** The *Messages* buffer is created in `messages-buffer-mode',
182 a new major mode, with read-only status. Any code that might create
183 the *Messages* buffer should call the function `messages-buffer' to do
184 so and set up the mode.
187 ** Emacs can now support ACLs (access control lists).
188 This requires a suitable support library to be found at build time.
189 On GNU/Linux, the POSIX ACL interface is used via libacl.
190 On MS-Windows, the NT Security APIs are used to emulate the POSIX interface.
193 *** Emacs preserves the ACL entries of files when backing up.
195 *** New functions `file-acl' and `set-file-acl' get and set the ACL
198 ** Multi-monitor support has been added.
201 *** New functions `display-monitor-attributes-list' and
202 `frame-monitor-attributes' can be used to obtain information about
203 each physical monitor on multi-monitor setups.
206 *** The functions `display-pixel-width' and `display-pixel-height' now
207 behave consistently among the platforms: they return the pixel width
208 or height for all physical monitors associated with the given display
209 as if they were on X. To get information for each physical
210 monitor, use the new functions above. Similar notes also apply to
211 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
212 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
215 ** The cursor stops blinking after 10 blinks (by default) on X and NS.
216 You can change the default by customizing `blink-cursor-blinks'.
219 ** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
220 This affects View mode, etc.
223 ** The default value of `make-backup-file-name-function' is no longer nil.
224 Instead it defaults to a function that does what the nil value used to.
229 *** The command `apropos-variable' is renamed to `apropos-user-option'.
230 `apropos-user-option' shows all user options while `apropos-variable'
231 shows all variables. When called with a universal prefix argument,
232 the two commands swap their behaviors. When `apropos-do-all' is
233 non-nil, they output the same results.
236 *** The key `?' now describes prefix bindings, like `C-h'.
239 *** The command `describe-function' has been extended for EIEIO.
240 Running it on constructors will show a full description of the
241 generated class. For generic functions, it will show all
242 implementations together with links to the source. The old commands
243 `describe-class', `describe-constructor' and `describe-generic' were
247 *** The function `quail-help' is no longer an interactive command.
248 Use `C-h C-\' (`describe-input-method') instead.
253 *** ImageMagick images now support the :max-width and :max-height keywords.
256 *** When using `create-image' with image data, you can pass a :format
257 attribute (via the property-list argument) in order to help
258 ImageMagick detect the image type. The value should be a MIME
259 content-type that is found in the new variable `image-format-suffixes'.
261 ** Frame and window changes
264 *** The function `window-in-direction' introduced in Emacs 24.1 now
265 takes additional arguments for specifying a reference point, wrapping
266 selection around frame borders, and specifying ways to select the
270 *** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
271 bound to <f11> and M-<f10>, respectively.
274 *** New hooks `focus-in-hook', `focus-out-hook'.
275 These are normal hooks run when an Emacs frame gains or loses input focus.
278 *** Emacs can now change frame sizes in units of pixels, rather than
279 text rows or columns. When maximizing a frame or making it fullscreen,
280 remaining extra pixels are no longer given to the minibuffer, the rightmost
281 fringe, or other unusable space, but are distributed among the text
282 areas of the frame's windows. If the new option `frame-resize-pixelwise'
283 is non-nil, all frame size changes happen pixelwise and set the
284 corresponding size hints for the window manager.
287 *** Emacs can now change window sizes in units of pixels.
288 Mouse-dragging a mode line or window divider now changes the size of
289 adjacent windows pixelwise. If the new option `window-resize-pixelwise'
290 is non-nil, functions like `balance-windows-area' and `fit-window-to-buffer'
291 resize windows pixelwise. Most functions for changing or accessing
292 window sizes now have an additional argument that allows changes to apply,
293 or values to be returned, in pixels instead of lines/columns.
296 *** The functions `window-body-height' and `window-body-width' now never
297 count partially visible lines or columns if called with a nil PIXELWISE
301 *** Emacs can now draw dividers between adjacent windows. To put
302 dividers between side-by-side/vertically stacked windows customize the
303 frame parameters `right-divider-width' and `bottom-divider-width' to
304 some positive integer. You can drag dividers with the mouse (they show
305 a corresponding cursor when the mouse hovers over them). You can change
306 the appearance of dividers by customizing the faces `window-divider',
307 `window-divider-first-pixel', and `window-divider-last-pixel'. The last
308 two are useful to provide a 3D effect, or to better distinguish dividers
309 from surrounding display objects.
312 *** New functions are provided to return the pixel sizes of window
313 components, namely `window-scroll-bar-width', `window-mode-line-height'
314 `window-header-line-height', `window-right-divider-width' and
315 `window-bottom-divider-width'.
318 *** The new function `window-text-pixel-size' returns the size of the
319 text of a window's buffer in pixels. This allows functions like
320 `fit-frame-to-buffer' and `fit-window-to-buffer' to accurately fit a
321 window to its buffer as it will be displayed.
324 *** `fit-window-to-buffer' can now resize windows in both dimensions.
325 This behavior is controlled by the new option
326 `fit-window-to-buffer-horizontally'. The new option
327 `fit-frame-to-buffer' allows to fit the window's frame to its buffer.
330 *** `fit-frame-to-buffer' now fits frames in both dimensions. The new
331 options `fit-frame-to-buffer-margins' and `fit-frame-to-buffer-sizes'
332 control the size of the frame and its position on screen.
335 *** Temp Buffer Resize Mode can now adjust height and width of windows
336 and frames. `temp-buffer-resize-mode' is now able to adjust the height
337 and the width of a window displaying a temporary buffer. The new option
338 `temp-buffer-max-width' allows to control the width of temporary buffer
339 windows. Moreover, if the new option `fit-frame-to-buffer' is non-nil
340 and the buffer appears in the root window of a frame, Temp Buffer Resize
341 Mode will try to adjust width and/or height of the frame.
344 *** `split-window' is now a non-interactive function, not a command.
345 As a command, it was a special case of `C-x 2' (`split-window-below'),
346 and as such superfluous. After being reimplemented in Lisp, its
347 interactive form was mistakenly retained.
350 *** The functions `window-size' and `window-total-size' now have an
351 optional argument to return a rounded size value.
354 *** `window-state-put' now allows to put a window state into internal
358 *** New option `scroll-bar-adjust-thumb-portion'.
359 Available only on X, this option allows to control over-scrolling
360 using the scroll bar (i.e. dragging the thumb down even when the end
361 of the buffer is visible).
364 *** New basic action function `display-buffer-in-previous-window' has
365 `display-buffer' display a buffer in a window previously showing that
369 *** New basic action function `display-buffer-at-bottom' has
370 `display-buffer' choose or make a window at the bottom of the selected
374 *** New display action function `display-buffer-no-window' to not
375 display the buffer in a window.
378 *** New display action alist entry `allow-no-window' to indicate the
379 caller of `display-buffer' is ready to handle the case of not
380 displaying the buffer in a window.
382 ** Lisp evaluation changes
384 *** `eval-defun' on an already defined defcustom calls the :set function,
388 *** The commands `eval-expression' (`M-:'), `eval-last-sexp' (`C-x C-e'),
389 and `eval-print-last-sexp' (`C-j' in Lisp Interaction mode) can take a
390 zero prefix argument. This disables truncation of lists in the output,
391 equivalent to setting `(eval-expression-)print-length' and
392 `(eval-expression-)print-level' to nil. Additionally, it causes integers
393 to be printed in other formats (octal, hexadecimal, and character).
396 *** New hook `eval-expression-minibuffer-setup-hook' run by
397 `eval-expression' on entering the minibuffer.
400 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
403 ** `cache-long-line-scans' is now non-nil, and renamed to `cache-long-scans',
404 because it affects caching of paragraph scanning results as well.
405 There is no reason to set this to nil except for debugging purposes.
408 ** The option `set-mark-default-inactive' has been deleted.
409 This unfinished feature was introduced by accident in Emacs 23.1;
410 simply disabling Transient Mark mode does the same thing.
413 ** The default value of `comment-use-global-state' is now t,
414 and this variable has been marked obsolete.
417 ** `emacs-bzr-version' has been renamed to `emacs-repository-version',
418 and works for git too, if you fetch the repository notes.
421 ** New option `load-prefer-newer' affects how the `load' function chooses
422 the file to load. If this is non-nil, then when both .el and .elc
423 versions of a file exist, and the caller did not explicitly specify
424 which one to load, then the newer file is loaded. The default, nil,
425 means to always load the .elc file.
428 * Editing Changes in Emacs 24.4
430 ** Indentation changes
433 *** `electric-indent-mode' is now enabled by default.
434 Typing RET reindents the current line and indents the new line.
435 `C-j' inserts a newline but does not indent. In some programming modes,
436 additional characters are electric (eg `{').
439 *** New buffer-local `electric-indent-local-mode'.
442 *** The behavior of `C-x TAB' (`indent-rigidly') has changed.
443 When invoked without a prefix argument, it now activates a transient
444 mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
445 the text indentation in the region. Typing any other key resumes
446 normal editing behavior.
449 *** `tab-stop-list' is now implicitly extended to infinity by repeating
450 the last step. Its default value is changed to nil, which means a tab
451 stop every `tab-width' columns.
454 ** New command `cycle-spacing' acts like a smarter `just-one-space'.
455 When called in succession, it cycles between spacing conventions:
456 one space, no spaces, original spacing.
459 ** The new function `fill-single-char-nobreak-p' can stop fill from breaking
460 a line after a one-letter word, which is an error in some typographical
461 conventions. To use it, add it to the `fill-nobreak-predicate' hook.
464 ** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
467 ** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
468 Most commands are still unaware of it, but kill/yank do work on the rectangle.
471 ** New option `visual-order-cursor-movement'.
472 If this is non-nil, cursor motion with arrow keys will follow the
473 visual order of characters on the screen: <left> always moves to the
474 left, <right> always moves to the right, disregarding the surrounding
475 bidirectional context.
480 *** All interactive commands that read a register (`copy-to-register', etc.)
481 now display a temporary window after `register-preview-delay' seconds
482 that summarizes existing registers. To disable this, set that option to nil.
483 Interactive commands that read registers and want to make use of this
484 should use `register-read-with-preview' to read register names.
487 *** New command `frameset-to-register' bound to `C-x r f', replacing
488 `frame-configuration-to-register'. It offers similar functionality,
489 plus enhancements like the ability to restore deleted frames.
490 (`frame-configuration-to-register' still exists, but no longer has a
494 *** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
498 ** New command `delete-duplicate-lines'.
499 This searches the region for identical lines, and removes all but one
500 copy of each repeated line. The lines need not be sorted.
503 ** `blink-matching-paren' now only highlights the matching open-paren
504 by default, instead of moving cursor. Set this variable to `jump' to
505 enable the old behavior.
508 * Changes in Specialized Modes and Packages in Emacs 24.4
511 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
513 ~/.emacs.d/timelog replaces ~/.timelog
514 ~/.emacs.d/vip replaces ~/.vip
515 ~/.emacs.d/viper replaces ~/.viper
516 ~/.emacs.d/ido.last replaces ~/.ido.last
517 ~/.emacs.d/kkcrc replaces ~/.kkcrc
518 ~/.emacs.d/quickurls replaces ~/.quickurls
519 ~/.emacs.d/idlwave/ replaces ~/.idlwave/
520 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
521 ~/.emacs.d/places replaces ~/.emacs-places
522 ~/.emacs.d/shadows replaces ~/.shadows
523 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
524 ~/.emacs.d/strokes replaces ~/.strokes
525 ~/.emacs.d/notes replaces ~/.notes
526 ~/.emacs.d/type-break replaces ~/.type-break
527 Also the following files used by the now obsolete otodo-mode.el:
528 ~/.emacs.d/todo-do replaces ~/.todo-do
529 ~/.emacs.d/todo-done replaces ~/.todo-done
530 ~/.emacs.d/todo-top replaces ~/.todo-top
532 ** Backtrace and debugger
535 *** New Lisp debugger command `v' (`debugger-toggle-locals') toggles the
536 display of local variables of the current stack frame.
539 *** The Lisp debugger's `e' command (`debugger-eval-expression') now includes
540 the lexical environment when evaluating the code in the context at point
541 (and so allows you to access lexical variables).
544 *** New minor mode `jit-lock-debug-mode' helps you debug code run via JIT Lock.
547 ** Battery information can now be retrieved from BSD's `apm' utility.
550 ** In the Buffer Menu, `M-s a C-o' shows matches for a regexp in marked buffers.
552 ** Calendar and Diary
555 *** New faces `calendar-weekday-header', `calendar-weekend-header',
556 and `calendar-month-header'.
559 *** New option `calendar-day-header-array'.
562 *** New variable `diary-from-outlook-function', used by the command
563 `diary-from-outlook'.
566 *** The variable `calendar-font-lock-keywords' is obsolete.
571 *** Calc by default now uses the Gregorian calendar for all dates, and
572 uses January 1, 1 AD as its day number 1. Previously Calc used the
573 Julian calendar for dates before September 14, 1752, and it used
574 December 31, 1 BC as its day number 1; the new scheme is more
575 consistent with Calendar's calendrical system and day numbering.
578 *** The new option `calc-gregorian-switch' lets you configure if
579 (and when) Calc switches from the Julian to the Gregorian calendar.
582 *** Support for ISO 8601 dates.
589 **** The cpp-root project now supports executing a compile command.
590 It can be set through the new :compile-command slot or the
591 buffer-local variable `compile-command'.
594 **** Better selection of include directories for the 'linux' project.
595 Include directories now support out-of-tree build directories and
596 target architecture auto-detection.
601 **** Improved detection of used namespaces in current scope in C++.
603 **** Parsing of default values for variables and function arguments in C/C++.
604 They are also displayed by the summarize feature in the mode line.
606 **** Improved parsing of function pointers in C/C++.
607 This also includes parsing of function pointers as function arguments.
609 **** Parsing of C/C++ preprocessor macros that open new scope.
610 For example, this enables parsing of macros that open new namespaces.
612 **** Support for 'this' pointer in inline member functions in C++.
617 *** New macro `cl-tagbody'.
618 This executes statements while allowing for control transfer to labels.
621 *** letf is now just an alias for cl-letf.
626 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
627 Hence, you can now enable it independently from those modes, and from
628 `transient-mark-mode'.
631 *** `cua-highlight-region-shift-only' is now obsolete.
632 You can disable `transient-mark-mode' to get the same result.
635 *** CUA's rectangles can now be used without CUA by calling the command
636 `cua-rectangle-mark-mode'.
641 *** Support for completion, ElDoc, and Flycheck has been added.
644 *** The current CFEngine syntax is parsed from "cf-promises -s json".
645 There is a fallback syntax available if you don't have cf-promises or
646 if your version doesn't support that option. See option `cfengine-cf-promises'.
649 ** Delete Selection mode can now be used without Transient Mark mode.
654 *** `desktop-save-mode' by default now auto-saves an existing desktop file
655 after `desktop-auto-save-timeout'. To disable this, customize that option
659 *** Desktop now saves and restores the frame/window configuration.
660 To disable this, set `desktop-restore-frames' to nil.
661 See also related options `desktop-restore-reuses-frames',
662 `desktop-restore-in-current-display', and `desktop-restore-forces-onscreen'.
665 ** New Dired minor mode `dired-hide-details-mode' toggles whether details,
666 such as file ownership or permissions, are visible.
669 ** You can enable ElDoc inside the `eval-expression' minibuffer with:
670 (add-hook 'eval-expression-minibuffer-setup-hook 'eldoc-mode)
671 The results display in the mode line.
673 ** Electric Pair mode
676 *** New option `electric-pair-preserve-balance', enabled by default.
677 If non-nil, pairing/skipping only kicks in when that help the balance
678 of parentheses and quotes, i.e. the buffer should end up at least as
681 You can further control this behavior by adjusting the predicates
682 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
685 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
686 In `electric-pair-mode', the commands `backward-delete-char' and
687 `backward-delete-char-untabify' are now bound to electric variants
688 that delete the closer when invoked between adjacent pairs.
691 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
692 In `electric-pair-mode', inserting a newline between adjacent pairs
693 opens an extra newline after point, which is indented if
694 `electric-indent-mode' is also set.
697 *** New option `electric-pair-skip-whitespace', enabled by default.
698 This controls if skipping over closing delimiters should jump over any
699 whitespace slack. Setting it to `chomp' makes it delete this
700 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
703 *** New variables control the pairing in strings and comments.
704 You can customize `electric-pair-text-pairs' and
705 `electric-pair-text-syntax-table' to tweak pairing behavior inside
706 strings and comments.
709 ** New EPA option `epa-mail-aliases'.
710 You can set this to a list of email address aliases that `epa-mail-encrypt'
711 should use to find keys.
714 ** New ERC option `erc-accidental-paste-threshold-seconds'.
715 If set to a number, this can be used to avoid accidentally pasting large
716 amounts of data into the ERC input.
719 ** New ERT macro `skip-unless' allows skipping ERT tests.
720 See the ERT manual for details.
725 *** `eshell' now supports visual subcommands and options.
726 Eshell has been able to handle "visual" commands (interactive,
727 non-line oriented commands such as top that require display
728 capabilities not provided by eshell) by running them in an Emacs
729 terminal emulator. See `eshell-visual-commands'.
731 This feature has been extended to subcommands and options that make a
732 usually line-oriented command a visual command. Typical examples are
733 "git log" and "git <command> --help", which display their output in a
734 pager by default. See `eshell-visual-subcommands' and
735 `eshell-visual-options'.
738 *** New Eshell-Tramp module.
739 External su and sudo commands are now the default; the internal,
740 Tramp-using variants can still be used by enabling the eshell-tramp
744 ** New F90 mode option `f90-smart-end-names'.
747 Icomplete is now more similar to Ido.
750 *** Icomplete by default now applies to all forms of minibuffer completion.
751 The variable `icomplete-with-completion-tables' (now a user option)
752 controls this. To restore the old behavior, set it back to
753 '(internal-complete-buffer).
756 *** You can navigate through and select completions using the keys
757 from `icomplete-minibuffer-map'.
760 *** The string that separates potential completions is now a customizable
761 option (`icomplete-separator'). The default is " | " rather than ",".
764 *** New face `icomplete-first-match'; and new options
765 `icomplete-hide-common-prefix' and `icomplete-show-matches-on-no-input'.
768 *** The option `icomplete-show-key-bindings' has been removed.
773 *** An Ido user manual is now included.
776 *** The option `ido-use-virtual-buffers' can now take the value `auto'.
777 This means to use virtual buffers if the current ido input does not match
781 *** The variable `ido-decorations' can optionally have two new elements,
782 which are the brackets to use around the sole remaining completion.
787 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
788 visit the next image file and the previous image file in the same
789 directory, respectively.
792 *** New commands to show specific frames of multi-frame images.
793 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
794 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
797 *** New commands to speed up, slow down, or reverse animation.
798 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
799 speed up and slow down the animation. `a r' (`image-reverse-speed')
800 to reverse it and `a 0' (`image-reset-speed') to reset it.
803 *** The command `image-mode-fit-frame' deletes other windows.
804 When toggling, it restores the frame's previous window configuration.
805 It also has an optional frame argument, which can be used by Lisp
806 callers to fit the image to a frame other than the selected frame.
811 *** New global command `M-s h .' (`highlight-symbol-at-point') highlights
812 the symbol found near point.
815 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
816 will cycle through faces in `hi-lock-face-defaults' without prompting.
819 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
824 *** New Info face `info-index-match', used to highlight matches in index
825 entries displayed by `Info-index-next', `Info-virtual-index' and
829 *** The Info-edit command is obsolete. Editing Info nodes by hand
830 has not been relevant for some time.
835 *** New option `js-switch-indent-offset'.
838 *** Better indentation of multiple-variable declarations.
839 If a declaration spans several lines, variables on the following lines
840 are lined up to the first one.
843 *** Recognition and better indentation of continuations in array comprehensions.
846 ** MH-E has been updated to version 8.5 - see separate MH-E-NEWS file.
851 *** Font locking for Texinfo comments and new keywords.
853 *** Completion in Octave file buffers.
857 *** Jump to definition.
859 *** Documentation lookup/search.
862 ** OPascal mode is the new name for Delphi mode
865 *** All delphi-* variables and functions have been renamed to opascal-*.
866 Obsolete aliases exist for those likely to have been used externally.
869 *** The option `delphi-newline-always-indents' has been removed.
870 Use `electric-indent-mode' instead.
873 *** The TAB key runs the standard `indent-for-tab-command', not `delphi-tab'.
878 *** In the `list-packages' buffer, you can use `f' (`package-menu-filter')
879 to filter the list of packages by a keyword.
882 *** In the `describe-package' buffer, there are now buttons listing the
883 keywords related to the package. Click on a button to see other packages
884 related to that keyword.
887 *** The format of `archive-contents' files, generated by package
888 repositories, has changed to allow a new (fifth) element in the data
889 vectors, containing an associative list with extra properties.
890 (For example, `describe-package' uses the `:url' extra property to
891 display a "Homepage" header.)
894 ** In Prolog mode, `prolog-use-smie' has been removed,
895 along with the non-SMIE indentation code.
900 *** The new command `remember-notes' creates a buffer that is saved on exit.
901 You can use it as a more permanent *scratch* buffer.
904 *** Remember can now store notes in separate files.
905 To use this, add `remember-store-in-files' to the `remember-handler-functions'
906 option. The files are saved in `remember-data-directory' using
907 names specified by `remember-directory-file-name-format'.
912 *** Customize `rmail-mbox-format' to influence some minor aspects of
913 how Rmail displays non-MIME messages.
916 *** The `unrmail' command now converts from BABYL to mboxrd format,
917 rather than mboxo. Customize `unrmail-mbox-format' to change this.
922 *** Improved syntax highlighting and indentation.
925 *** New `electric-indent-mode' integration.
928 *** New option `ruby-encoding-magic-comment-style'.
931 *** New option `ruby-custom-encoding-magic-comment-template'.
934 *** New option `ruby-align-to-stmt-keywords'.
937 *** New option `ruby-align-chained-calls'.
940 *** More Ruby file types have been added to `auto-mode-alist'.
942 ** Search and Replace
945 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
946 starts a symbol (identifier) incremental search forward with the
947 symbol found near point added to the search string initially.
950 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
951 and adds it to the search string.
954 *** `M-s i' in Isearch mode toggles whether search matches invisible text.
957 *** `query-replace' skips invisible text when `search-invisible' is nil,
958 and opens overlays with hidden text when `search-invisible' is `open'.
961 *** A negative prefix arg of replacement commands replaces backward.
962 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
963 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
966 *** By default, prefix arguments do not now terminate Isearch mode.
967 Set `isearch-allow-prefix' to nil to restore old behavior.
970 *** More Isearch commands accept prefix arguments, namely
971 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
975 *** Word search now matches whitespace at the beginning/end
976 of the search string if it contains leading/trailing whitespace.
977 In an incremental word search or when using a non-nil LAX argument
978 of `word-search-regexp', the lax matching can also match part of
979 the first word (in addition to the lax matching of the last word).
980 The same rules are now applied to the symbol search with the difference
981 that it matches symbols, and non-symbol characters between symbols.
984 ** New SES command `ses-rename-cell' allows assignment of names to SES cells.
987 ** The shell.el option `explicit-bash-args' includes --noediting by default.
988 All non-ancient Bash versions support this option.
993 *** The SMIE indentation engine is now used by default - see `sh-use-smie'.
996 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
1001 *** You can customize the SMIE indentation of a mode via `smie-config'.
1002 The command `smie-config-guess' can help you derive the appropriate
1003 indentation settings, if you provide it with an indented sample file.
1004 Use `smie-config-save' to save the result.
1007 *** You can customize the SMIE indentation of a file by adding an entry to
1008 the file's local variables of the form: `eval: (smie-config-local '(RULES))'.
1011 *** New commands `smie-config-show-indent' and `smie-config-set-indent'.
1016 *** Improved login monitoring and appropriate response to login failures.
1017 New variable `sql-login-delay' defines maximum wait time for a connection.
1020 SQL*Plus script placeholders are properly highlighted and identified
1021 in `sql-placeholders-filter'. When starting SQL*Plus, `sql-oracle-options'
1022 are passed before the logon parameter, as required. The default now
1023 includes `-L', to limit the number of logon attempts per invocation.
1026 ** New Term mode option `term-suppress-hard-newline'.
1029 ** Todo mode has been rewritten and enhanced.
1030 The Todo mode user manual describes all commands and most user
1031 options. To support some of these features, a new file format is
1032 used, which is incompatible with the old format; however, you can
1033 convert old todo and done item files to the new format on initializing
1034 the first new todo file, or at any later time with the provided
1035 conversion command. The previous version of todo-mode.el has been
1036 renamed to otodo-mode.el and is now obsolete. New features include:
1038 *** Support for multiple todo files and archive files of done items.
1040 *** Renaming, reordering, moving, merging, and deleting categories.
1042 *** Sortable tabular summaries of categories and the item types they contain.
1044 *** Cross-category lists of items filtered by specific criteria.
1046 *** More fine-grained interaction with the Emacs diary, by being able to
1047 decide for each todo item whether it appears in the Fancy Diary display.
1049 *** Highly flexible new item insertion and item editing.
1051 *** Moving items between categories, storing done items in their category
1052 or in archive files, undoing or unarchiving done items.
1054 *** Reprioritizing items by inputting a numerical priority.
1056 *** Extensive customizability of operation and display, including many faces.
1061 *** `trace-function' and `trace-function-background' no longer prompt for
1062 the output buffer. Unless you use a prefix argument, they output to
1066 *** With a prefix argument, `trace-function' and `trace-function-background'
1067 will prompt for a "context". This is a Lisp expression, whose value at the
1068 time the function is entered/exited is printed along with the function's
1074 *** The experimental url syntax for remote file names has been removed.
1077 *** New connection method "adb", which allows to access Android
1078 devices by the Android Debug Bridge. The variable `tramp-adb-program'
1079 can be used to adapt the path of the "adb" program, if needed.
1082 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
1083 "scpc" and "rsyncc" are discontinued. The ssh option
1084 "ControlMaster=auto" is set automatically in all ssh-based methods,
1085 when possible. See `tramp-use-ssh-controlmaster-options'.
1088 *** Handlers for `file-acl' and `set-file-acl' for remote machines
1089 which support POSIX ACLs.
1092 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
1093 for remote machines which support filesystem notifications.
1096 ** New URL command `url-cookie-list' displays the current cookies,
1097 and allows you to interactively remove cookies.
1099 ** VC and related modes
1102 *** In VC directory mode, `D' displays diffs between VC-controlled
1103 whole tree revisions.
1106 *** In VC directory mode, `L' lists the change log for the current VC
1107 controlled tree in a window.
1110 *** In VC directory mode, `I' shows a log of changes that will be
1111 received with a pull operation.
1114 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
1115 under current version control system. When called with a prefix
1116 argument, you can remove a file from the ignored file list.
1121 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
1124 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
1127 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
1128 are obsolete. Customize the `woman-*' faces instead.
1130 ** Obsolete packages
1133 *** iswitchb.el; use icomplete-mode.
1136 *** longlines.el; use visual-line-mode.
1145 *** terminal.el; use term.el instead.
1148 *** the old version of todo-mode.el (renamed to otodo-mode.el).
1151 *** xesam.el (owing to the cancellation of the XESAM project).
1154 *** yow.el; use fortune.el or cookie1.el instead.
1157 * New Modes and Packages in Emacs 24.4
1160 ** New package `eww' is a built-in web browser.
1161 It is only available if Emacs is compiled with libxml2 support.
1164 ** New minor mode `superword-mode'.
1165 This overrides the default word motion commands to treat "symbol_words"
1166 as a single word, similar to what `subword-mode' does.
1169 ** New package nadvice.el offers lighter-weight advice facilities.
1172 *** add-function/remove-function, which can be used to add/remove code on any
1173 function-carrying place, such as process-filters or `<foo>-function' hooks.
1175 *** advice-add/advice-remove to add/remove a piece of advice on a named
1176 function, much like `defadvice' does.
1178 ** New package frameset.el.
1179 It provides a set of operations to save a frameset (the state of all
1180 or a subset of the existing frames and windows, somewhat similar to a
1181 frame configuration), both in-session and persistently, and restore it
1182 at some point in the future.
1185 ** New package filenotify.el provides an interface for file system
1186 notifications. It requires that Emacs be compiled with one of the
1187 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
1190 * Incompatible Lisp Changes in Emacs 24.4
1193 ** `kill-region' has lost its `yank-handler' optional argument.
1196 ** `(input-pending-p)' no longer runs other timers that are ready to run.
1197 The new optional CHECK-TIMERS parameter allows for the prior behavior.
1200 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
1203 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
1204 Some languages match those as »...«, and others as «...», so it is
1205 better for Emacs to stay neutral by default.
1208 ** In compiled Lisp files, the header no longer includes a timestamp.
1211 ** The default file coding for Emacs Lisp files is now utf-8.
1212 (See `file-coding-system-alist'.) In most cases, this change is
1213 transparent, but files that contain unusual characters without
1214 specifying an explicit coding system may fail to load with obscure
1215 errors. You should either convert them to utf-8 or add an explicit
1219 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
1220 It used to disable the minor mode, major mode, and text-property keymaps,
1221 whereas now it simply has higher precedence.
1224 ** Default process filters and sentinels are not nil any more.
1225 Instead they default to a function that does what the nil value used to do.
1228 ** `read-event' does not return decoded chars in ttys any more.
1229 As was the case in Emacs 22 and before, the decoding of terminal
1230 input, according to `keyboard-coding-system', is not performed in
1231 `read-event' any more. But unlike in Emacs 22, this decoding is still
1232 done before input-decode-map, function-key-map, etc.
1235 ** The option `inhibit-local-menu-bar-menus' has been removed.
1238 ** Frame-local variables that affect redisplay do not work any more.
1239 More specifically, redisplay does not bother to check for a frame-local
1240 value when looking up variables.
1243 ** nil and "unbound" are indistinguishable in `symbol-function'.
1244 `symbol-function' does not signal a `void-function' error any more.
1245 To determine if a symbol's function definition is void, use `fboundp'.
1248 ** `defadvice' does not honor the `freeze' flag and cannot advise
1249 special-forms any more.
1252 ** `dolist' no longer binds VAR while evaluating the RESULT form,
1253 when lexical binding is enabled. Previously, VAR was bound to nil,
1254 which often led to spurious unused-variable warnings.
1257 ** The return value of `backup-buffer' has changed.
1258 The second argument is no longer an SELinux context, instead it is an
1259 alist of extended attributes as returned by the new function
1260 `file-extended-attributes'. The attributes can be applied to another
1261 file using `set-file-extended-attributes'.
1264 ** By default `copy-file' no longer copies file permission bits to an
1265 existing destination; and it sets the file permission bits of a newly
1266 created destination to those of the source, masked by the default file
1267 permissions. To copy the file permission bits, pass t as the
1268 PRESERVE-PERMISSIONS argument of `copy-file'.
1271 ** `visited-file-modtime' now returns -1 for nonexistent files.
1272 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
1273 in the presence of files with negative time stamps.
1276 ** The cars of the elements in `interpreter-mode-alist' are now
1277 treated as regexps rather than literal strings.
1280 * Lisp Changes in Emacs 24.4
1283 ** The second argument of `eval' can now specify a lexical environment.
1286 ** New functions `special-form-p' and `macrop'.
1289 ** New macro `define-alternatives' can be used to define generic commands.
1290 Generic commands are interactive functions whose implementation can be
1291 selected among several alternatives, as a matter of user preference.
1294 ** If you give a symbol a `defalias-fset-function' property, `defalias'
1295 on that symbol will use the associated value as a function to call
1299 ** New variable `enable-dir-local-variables'.
1300 Directory-local variables are ignored if this is nil. This may be
1301 useful for modes that want to ignore directory-locals while still
1302 respecting file-local variables.
1305 ** New function `get-pos-property'.
1308 ** `read-regexp' now uses the new variable `read-regexp-defaults-function'
1309 as a function to call to provide default values.
1311 ** Completion changes
1314 *** The separator used by `completing-read-multiple' is now a regexp.
1315 The default `crm-separator' has been changed to allow surrounding spaces
1319 *** The `common-substring' argument of `display-completion-list',
1320 which has been documented as obsolete since Emacs 23.1, is now _really_
1321 obsolete, and no longer advertised. Instead either call
1322 `completion-hilit-commonality' to add the highlighting; or use
1323 `completion-all-completions', which returns highlighted strings.
1326 *** New function `completion-table-with-cache' is a wrapper for
1327 `completion-table-dynamic' that caches the result of the last lookup.
1330 *** New function `completion-table-merge' to combine several
1331 completion tables by merging their completions.
1334 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1335 display specified symbols as composed characters. E.g., in Emacs Lisp mode,
1336 this replaces the string "lambda" with the Greek lambda character.
1341 *** Functions to pop up menus and dialogs now work on all terminals,
1342 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1343 `message-box', `yes-or-no-p', etc.
1345 The function `display-popup-menus-p' will now return non-nil for a
1346 display or frame whenever a mouse is supported on that display or
1350 *** New hook `tty-setup-hook', run at the end of initializing a text terminal.
1353 *** The hook `term-setup-hook' is obsolete. It is entirely equivalent
1354 to `emacs-startup-hook'. See also the new `tty-setup-hook'.
1357 ** New hook `pre-redisplay-function'.
1360 ** New bool-vector set operation functions
1361 *** `bool-vector-exclusive-or'
1362 *** `bool-vector-union'
1363 *** `bool-vector-intersection'
1364 *** `bool-vector-set-difference'
1365 *** `bool-vector-not'
1366 *** `bool-vector-subsetp'
1367 *** `bool-vector-count-consecutive'
1368 *** `bool-vector-count-population'
1371 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1373 ** Error-handling changes
1376 *** New function `define-error'.
1379 *** `with-demoted-errors' takes an additional argument `format'.
1382 ** New macro `with-eval-after-load'.
1383 This is like the old `eval-after-load', but better behaved.
1386 ** New library subr-x.el with miscellaneous small utility functions
1387 *** `hash-table-keys'
1388 *** `hash-table-values'
1389 *** `string-blank-p'
1390 *** `string-empty-p'
1392 *** `string-reverse'
1393 *** `string-trim-left'
1394 *** `string-trim-right'
1396 *** `string-remove-prefix'
1397 *** `string-remove-suffix'
1400 ** Obsoleted functions
1403 *** `lisp-complete-symbol'
1404 *** `field-complete'
1405 *** `minibuffer-completion-contents'
1406 *** `isearch-nonincremental-exit-minibuffer'
1407 *** `isearch-filter-visible'
1408 *** `generic-make-keywords-list'
1409 *** `get-upcase-table' (use `case-table-get-table' instead).
1412 ** `with-wrapper-hook' is obsoleted by `add-function'.
1413 The few hooks that used with-wrapper-hook are replaced as follows:
1414 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1415 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1416 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1419 ** `byte-compile-interactive-only-functions' is now obsolete.
1420 To specify that a command should only be called interactively, give it
1421 a non-nil `interactive-only' property.
1424 ** `split-string' now takes an optional argument TRIM.
1425 The value, if non-nil, is a regexp that specifies what to trim from
1426 the start and end of each substring.
1429 ** New function `string-suffix-p'.
1431 ** File-handling changes
1434 *** Support for filesystem notifications.
1435 Emacs now supports notifications of filesystem changes, such as
1436 creation, modification, and deletion of files. This requires the
1437 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1438 MS-Windows systems, this is supported for Windows XP and newer
1442 *** The 9th element returned by `file-attributes' is now unspecified.
1443 Formerly, it was t if the file's gid would change if file were deleted
1444 and recreated. This value has been inaccurate for years on many
1445 platforms, and nobody seems to have noticed or cared.
1448 *** The 6th argument to `copy-file' has been renamed to
1449 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1450 Unix file permission bits as well as SELinux context.
1453 *** The function `file-ownership-preserved-p' now has an optional
1454 argument GROUP which causes it check for file group too. This can be
1455 used in place of the 9th element of `file-attributes'.
1458 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1459 argument, with the same interpretation as the returned value of
1460 `visited-file-modtime'.
1462 ** Revert and Autorevert changes
1465 *** The default values of `buffer-stale-function', `revert-buffer-function',
1466 and `revert-buffer-insert-file-contents-function' are no longer nil.
1467 Instead they default to functions that do what the nil value used to.
1470 *** `buffer-stale-function' is now used for buffers visiting files too.
1473 *** If Emacs is compiled with file notification support, it uses notifications
1474 instead of checking file time stamps. To disable this, set the user option
1475 `auto-revert-use-notify' to nil. Alternatively, you can specify a regular
1476 expression matching directories to be excluded from file notifications via
1477 `auto-revert-notify-exclude-dir-regexp'.
1480 *** The new user option `auto-revert-remote-files' enables reversion
1481 of remote files, if set to non-nil.
1486 *** The function `face-spec-set' is now like `setq' for face specs.
1487 Its third arg now accepts values specifying a face spec type (defface,
1488 custom, or override spec), and the relevant spec is set accordingly.
1491 *** New function `add-face-text-property', which can be used to
1492 conveniently prepend/append new face properties.
1495 *** Face specs set via Custom themes now replace the `defface' spec
1496 rather than inheriting from it. In other words, setting a face via a
1497 theme now behaves like setting it via Customize: you only need to
1498 specify the attributes that you want, you don't need to unset those
1499 that you don't want.
1502 *** New face characteristic (supports :underline (:style wave))
1503 specifies whether or not the terminal can display a wavy line.
1506 *** New face spec attribute :distant-foreground
1507 specifies foreground to use if background color is near the foreground
1508 color that would otherwise have been used.
1513 *** `image-animated-p' is now `image-multi-frame-p'.
1514 It returns non-nil for any image that contains multiple frames,
1515 whether or not it specifies a frame delay.
1518 *** New variable `image-default-frame-delay' gives the frame delay for
1519 animated images which do not specify a frame delay.
1522 *** New functions `image-current-frame' and `image-show-frame' for getting
1523 and setting the current frame of a multi-frame image.
1528 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1529 **** object-name -> eieio-object-name
1530 **** object-class -> eieio-object-class
1531 **** object-class-fast -> eieio--object-class
1532 **** object-class-name -> eieio-object-class-name
1533 **** object-name-string -> eieio-object-name-string
1534 **** object-num-slots -> eieio--object-num-slots
1535 **** object-set-name-string -> eieio-object-set-name-string
1536 **** class-of -> eieio-object-class
1537 **** class-name -> eieio-class-name
1538 **** class-parent -> eieio-class-parent
1539 **** class-parents -> eieio-class-parents
1540 **** class-parents-fast -> eieio-class-parents-fast
1541 **** class-children -> eieio-class-children
1542 **** class-num-slots -> eieio--class-num-slots
1543 **** class-precedence-list -> eieio-class-precedence-list
1544 **** class-direct-subclasses -> eieio-class-children
1545 **** class-direct-superclasses -> eieio-class-parents
1547 ** Changes in encoding and decoding of text
1550 *** New coding-system `prefer-utf-8'.
1551 This is like `undecided' but prefers UTF-8 on decoding if the text to
1552 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1553 any non-ASCII characters are automatically encoded as UTF-8.
1556 *** New attributes of coding-systems whose type is `undecided'.
1557 Two new attributes, `:inhibit-null-byte-detection' and
1558 `:inhibit-iso-escape-detection', determine how to detect encoding of
1559 text that includes null bytes and ISO-2022 escape sequences,
1560 respectively. Each of these attributes can be either nil, zero, or
1561 t. If it is t, decoding text ignores null bytes and, respectively,
1562 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1563 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1564 text is encoded in one of the ISO-2022 encodings, such as
1565 iso-2022-7bit. If the value is zero, Emacs consults the variables
1566 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1568 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1569 UTF-8 encoding and decoding, whenever possible.
1571 These attributes are only meaningful for coding-systems of type
1572 `undecided'. (The type of a coding-system is determined by its
1573 `:coding-type' attribute and can be accessed by calling the
1574 `coding-system-type' function.)
1577 ** The `time-to-seconds' alias to `float-time' is no longer marked obsolete.
1580 ** New functions `group-gid' and `group-real-gid'.
1583 ** The spelling of the rx.el category `chinese-two-byte' has been
1584 corrected (the first 'e' was missing).
1587 ** Minor internal changes to the details of lock files.
1588 The lock for DIR/FILE is now _always_ DIR/.#FILE.
1589 If DIR/.#FILE already exists and is not an Emacs lock file,
1590 Emacs makes no attempt to lock DIR/FILE. (Previously, it fell back to
1591 numbered lock files DIR/.#FILE.0...).
1592 On file systems that do not support symbolic links, the lock is now a
1593 regular file with contents being what would have been in the symlink.
1595 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1598 *** The package descriptor and name of global variables, constants,
1599 and functions should be separated by two hyphens if the symbol is not
1600 meant to be used by other packages.
1603 * Changes in Emacs 24.4 on Non-Free Operating Systems
1606 ** The procedure for building Emacs on MS-Windows has changed.
1607 It is now built by running the same configure script as on all other
1608 platforms. This requires the MSYS environment and MinGW development
1609 tools. See the updated instructions in nt/INSTALL for details.
1611 Using the Posix configure script and Makefile's also means a change in
1612 the directory structure of the Emacs installation on Windows. It is
1613 now the same as on GNU and Unix systems. In particular, the auxiliary
1614 programs, such as cmdproxy.exe and hexl.exe, are in
1615 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1616 version), version-independent site-lisp is in share/emacs/site-lisp,
1617 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1618 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1619 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1620 directories and will find the files in there automatically; there's no
1621 need to set any variables due to this change.)
1624 ** Emacs on Windows 2000 and later can now access files and directories
1625 whose names cannot be encoded in the current system codepage.
1627 The new variable `w32-unicode-filenames' controls this feature: if it
1628 is t, Emacs uses Unicode APIs to pass file names to system calls,
1629 which lifts the limitation of file names to the current locale.
1632 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1633 The backtrace is written to the 'emacs_backtrace.txt' file in the
1634 directory where Emacs was running.
1637 ** The variable `buffer-file-type' is no longer supported.
1638 Setting it has no effect, and %t in the mode-line format is ignored.
1639 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1640 modifying it has no effect.
1643 ** Lock files now work on MS-Windows.
1644 This helps to prevent losing your edits if the same file is being
1645 edited in another Emacs session or by another user. See the node
1646 "Interlocking" in the Emacs User Manual for the details. To disable
1647 file locking, customize `create-lockfiles' to nil.
1649 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1650 GNUstep and Mac OS X 10.4 use the old font backend.
1651 To use the old backend by default, do on the command line:
1652 % defaults write org.gnu.Emacs FontBackend ns
1654 ** Improved fullscreen support on Mac OS X.
1655 Emacs supports both native (Mac OS X 10.7 and newer) and "old style" fullscreen.
1656 Customize `ns-use-native-fullscreen' to change the style.
1657 For Mac OS X 10.7 and newer, native is the default.
1659 ** On Mac OS X 10.7 and newer, Emacs uses sRGB colorspace by default.
1660 Customize `ns-use-srgb-colorspace' to disable this. Note that this
1661 does not apply to images.
1664 * Installation Changes in Emacs 24.3
1666 ** The default X toolkit is now Gtk+ version 3.
1667 If you don't pass `--with-x-toolkit' to configure, or if you use
1668 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1669 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1670 You can explicitly require a specific version by passing
1671 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1673 ** New configure option `--enable-link-time-optimization', to utilize
1674 an appropriate feature provided by GCC since version 4.5.0.
1676 ** New configure option `--without-all' to disable most of the optional
1677 features (image support, etc.) that are normally enabled by default.
1679 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1680 Emacs). If building with GCC, this enables compile-time checks that
1681 warn/give errors about possibly-questionable C code. On a recent GNU
1682 system there should be no warnings; on older and on non-GNU systems
1683 the results may be useful to developers.
1685 ** The configure option `--enable-use-lisp-union-type' has been
1686 renamed to `--enable-check-lisp-object-type', as the resulting
1687 Lisp_Object type no longer uses a union to implement the compile time
1688 check that this option enables.
1690 ** The configure option `--disable-maintainer-mode' has been removed,
1691 as it was confusingly-named and rarely useful.
1693 ** The configure options `--program-prefix', `--program-suffix', and
1694 `--program-transform-name' apply to more than just the installed
1695 binaries. Now they also affect the man pages, icons, and the
1696 etc/emacs.desktop file; but not the info pages, since this would break
1697 links between the various manuals.
1699 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1700 overwriting "emacs" in the installation bin/ directory with a link
1703 ** Emacs uses libtinfo in preference to libncurses, if available.
1705 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1706 /usr/pkg/lib to the linker search path. You must add them yourself if
1709 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1710 (from the bin and libexec directories, respectively). The former is
1711 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1714 * Startup Changes in Emacs 24.3
1716 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1717 lisp/ directory. There should not be any there anyway. If you have
1718 been adding them there, put them somewhere else; e.g., site-lisp.
1720 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1723 * Changes in Emacs 24.3
1727 *** `C-h f' (`describe-function') can now perform autoloading.
1728 When this command is called for an autoloaded function whose docstring
1729 contains a key substitution construct, that function's library is
1730 automatically loaded, so that the documentation can be shown
1731 correctly. To disable this, set `help-enable-auto-load' to nil.
1733 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1734 even after their associated libraries have been loaded (and the
1735 autoloads have been redefined as functions).
1739 *** Images displayed via ImageMagick now support transparency and the
1740 :background image specification property.
1742 *** When available, ImageMagick support is automatically enabled.
1743 It is no longer necessary to call `imagemagick-register-types'
1744 explicitly to install ImageMagick image types; that function is called
1745 automatically at startup, or when customizing an imagemagick- option.
1747 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1748 ImageMagick to view images. (You must call `imagemagick-register-types'
1749 afterwards if you do not use customize to change this.)
1751 *** The new variable `imagemagick-enabled-types' also affects which
1752 ImageMagick types are treated as images. The function
1753 `imagemagick-filter-types' returns the list of types that will be
1758 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1759 next and previous path separator, respectively.
1761 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1762 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1763 non-nil before enabling the mode.
1767 *** New option `mode-line-default-help-echo' specifies the help text
1768 (shown in a tooltip or in the echo area) for any part of the mode line
1769 that does not have its own specialized help text.
1771 *** You can now click mouse-3 in the coding system indicator to invoke
1772 `set-buffer-file-coding-system'.
1774 ** Server and client
1776 *** emacsclient now obeys string values for `initial-buffer-choice',
1777 if it is told to open a new frame without specifying any file to visit
1778 or expression to evaluate.
1780 *** New option `server-auth-key' specifies a shared server key.
1782 ** Emacs now generates backtraces on fatal errors.
1783 On encountering a fatal error, Emacs now outputs a textual description
1784 of the fatal signal, and a short backtrace on platforms like glibc
1785 that support backtraces.
1787 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1788 This minor mode replaces `toggle-read-only', which is now obsolete.
1790 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1791 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1792 respectively, without exiting from the prompt.
1794 ** In the Package Menu, newly-available packages are listed as "new",
1795 and sorted above the other "available" packages by default.
1797 ** If your Emacs was built from a repository checkout, the new variable
1798 `emacs-bzr-version' contains information about the bzr revision used.
1800 ** New option `create-lockfiles' specifies usage of lockfiles.
1801 It defaults to t. Changing it to nil inhibits the creation of lock
1802 files (use this with caution).
1804 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1805 variables on remote hosts.
1807 ** The entry for PCL-CVS has been removed from the Tools menu.
1808 The PCL-CVS commands are still available via the keyboard.
1810 ** Using "unibyte: t" in Lisp source files is obsolete.
1811 Use "coding: raw-text" instead.
1813 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1814 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1815 The previous binding, introduced in Emacs 24.1, was a mistake, because
1816 `C-c LETTER' bindings are reserved for user customizations.
1818 ** Internationalization
1820 *** New language environment: Persian.
1822 *** New input method `vietnamese-vni'.
1824 ** Nextstep (GNUstep / Mac OS X) port
1826 *** Support for fullscreen and the frame parameter fullscreen.
1828 *** A file dialog is used for open/save operations initiated from the
1832 * Editing Changes in Emacs 24.3
1834 ** Search and Replace
1836 *** Non-regexp Isearch now performs "lax" space matching.
1837 Each sequence of spaces in the supplied search string may match any
1838 sequence of one or more whitespace characters, as specified by the
1839 variable `search-whitespace-regexp'. (This variable is also used by a
1840 similar existing feature for regexp Isearch.)
1842 *** New Isearch command `M-s SPC' toggles lax space matching.
1843 This applies to both ordinary and regexp Isearch.
1845 *** New option `replace-lax-whitespace'.
1846 If non-nil, `query-replace' uses flexible whitespace matching too.
1849 *** Global `M-s _' starts a symbol (identifier) incremental search,
1850 and `M-s _' in Isearch toggles symbol search mode.
1851 `M-s c' in Isearch toggles search case-sensitivity.
1853 ** Navigation commands
1855 *** New binding `M-g c' for `goto-char'.
1857 *** New binding `M-g TAB' for `move-to-column'.
1859 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1860 interactively with no prefix arg. Previously, it moved to column 1.
1862 ** New option `yank-handled-properties' allows processing of text
1863 properties on yanked text, in ways that are more general than just
1864 removing them (as is done by `yank-excluded-properties').
1866 ** New option `delete-trailing-lines' specifies whether
1867 M-x delete-trailing-whitespace should delete trailing lines at the end
1868 of the buffer. It defaults to t.
1870 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1872 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1873 `ucs-insert' is now an obsolete alias for `insert-char'.
1875 ** The `z' key no longer has a binding in most special modes.
1876 It used to be bound to `kill-this-buffer', but `z' is too easy to
1879 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1880 It copies the region-rectangle as the last rectangle kill.
1884 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1886 *** New option `register-separator' specifies the register containing
1887 the text to put between collected texts for use with
1888 M-x append-to-register and M-x prepend-to-register.
1891 * Changes in Specialized Modes and Packages in Emacs 24.3
1893 ** Common Lisp emulation (CL)
1895 *** CL's main entry is now (require 'cl-lib).
1896 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1897 i.e., all its definitions have the "cl-" prefix (and internal definitions
1898 use the "cl--" prefix).
1900 If `cl' provided a feature under the name `foo', then `cl-lib'
1901 provides it under the name `cl-foo' instead; with the exceptions of the
1902 few `cl' definitions that had to use `foo*' to avoid conflicts with
1903 pre-existing Elisp entities. These have been renamed to `cl-foo'
1904 rather than `cl-foo*'.
1906 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1907 provide the old, non-prefixed names. Some exceptions are listed below:
1909 *** `cl-flet' is not like `flet' (which is deprecated).
1910 Instead it obeys the behavior of Common-Lisp's `flet'.
1911 In particular, in cl-flet function definitions are lexically scoped,
1912 whereas in flet the scoping is dynamic.
1914 *** `cl-labels' is slightly different from `labels'.
1915 The difference is that it relies on the `lexical-binding' machinery
1916 (as opposed to the `lexical-let' machinery used previously) to capture
1917 definitions in closures, so such closures will only work if `lexical-binding'
1920 *** `cl-letf' is not exactly like `letf'.
1921 The only difference is in details that relate to some deprecated usage
1922 of `symbol-function' in place forms.
1924 *** `progv' was rewritten to use the `let' machinery.
1925 A side effect is that variables without corresponding values are bound
1926 to nil rather than being made unbound.
1928 *** The following methods of extending `setf' are obsolete
1929 (use features from gv.el instead):
1930 `define-modify-macro' (use `gv-letplace')
1931 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1932 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1933 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1937 *** Changes are now highlighted using the same color scheme as in
1938 modern VCSes. Deletions are displayed in red (new faces
1939 `diff-refine-removed' and `smerge-refined-removed', and new definition
1940 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1941 and `smerge-refined-added', and new definition of `diff-added').
1943 *** The variable `diff-use-changed-face' defines whether to use the
1944 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1945 changes in context diffs.
1947 *** The new command `diff-delete-trailing-whitespace' removes trailing
1948 whitespace introduced by a diff.
1950 ** Ediff now uses the same color scheme as Diff mode.
1954 A new version of python.el, which provides several new features, including:
1955 per-buffer shells, better indentation, Python 3 support, and improved
1956 shell-interaction compatible with iPython (and virtually any other
1959 *** Some user options have been replaced/renamed, including (old -> new):
1960 **** python-indent -> python-indent-offset
1961 **** python-guess-indent -> python-indent-guess-indent-offset
1962 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1963 **** python-use-skeletons -> python-skeleton-autoinsert
1965 *** Some user options have been removed, including:
1967 **** `python-indent-string-contents': Strings are never indented.
1969 **** `python-honour-comment-indentation':
1970 Comments are always considered as indentation markers.
1972 **** `python-continuation-offset': Indentation is automatically
1973 calculated in a pep8 compliant way depending on the context.
1975 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1976 Have no direct mapping as the shell interaction is completely different.
1978 **** `python-python-command', `python-jython-command':
1979 Replaced by `python-shell-interpreter'.
1981 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1982 `python-pdbtrack-minor-mode-string', `python-source-modes':
1985 *** Some commands have been replaced (old -> new):
1986 **** python-insert-class -> python-skeleton-class
1987 **** python-insert-def -> python-skeleton-def
1988 **** python-insert-for -> python-skeleton-for
1989 **** python-insert-if -> python-skeleton-if
1990 **** python-insert-try/except -> python-skeleton-try
1991 **** python-insert-try/finally -> python-skeleton-try
1992 **** python-insert-while -> python-skeleton-while
1993 **** python-find-function -> python-nav-jump-to-defun
1994 **** python-next-statement -> python-nav-forward-sentence
1995 **** python-previous-statement -> python-nav-backward-sentence
1996 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1997 **** python-end-of-defun-function -> python-nav-end-of-defun
1998 **** python-send-buffer -> python-shell-send-buffer
1999 **** python-send-defun -> python-shell-send-defun
2000 **** python-send-region -> python-shell-send-region
2001 **** python-send-region-and-go -> emulate with python-shell-send-region
2002 and python-shell-switch-to-shell
2003 **** python-send-string -> python-shell-send-string
2004 **** python-switch-to-python -> python-shell-switch-to-shell
2005 **** python-describe-symbol -> python-eldoc-at-point
2009 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
2011 *** The D-Bus object manager interface is implemented.
2013 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
2014 if their value does not fit into Emacs's integer range.
2016 *** The function `dbus-call-method' is now non-blocking.
2017 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
2019 *** Signals can also be sent as unicast messages.
2021 *** The argument list of `dbus-register-signal' has been extended,
2022 according to the new match rule types of D-Bus.
2024 *** `dbus-init-bus' supports private connections.
2026 *** There is a new function `dbus-setenv'.
2028 ** `desktop-path' no longer includes the "." directory.
2029 Desktop files are now located in ~/.emacs.d by default.
2033 *** `dired-do-async-shell-command' executes each file sequentially
2034 if the command ends in `;' (when operating on multiple files).
2035 Otherwise, it executes the command on each file in parallel.
2037 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
2038 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
2041 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
2042 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
2043 mark/unmark/flag all files in the active region.
2045 *** The minibuffer default for `=' (`dired-diff') has changed.
2046 It is now the backup file for the file at point, if one exists.
2047 In Transient Mark mode the default is the file at the active mark.
2049 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
2050 The global binding for `M-=', `count-words-region' is in effect.
2054 *** New module "notifications", which can send a notification when you
2055 receive a private message or your nickname is mentioned.
2057 *** ERC will look up server/channel names via auth-source and use any
2060 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
2061 only applies to messages sent by lurkers.
2063 ** reStructuredText mode
2065 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
2066 fontification, comment handling, and customization have all been revised
2069 *** Support for `imenu' and `which-function-mode'.
2071 *** The reStructuredText syntax is more closely covered.
2072 Sphinx support has been improved.
2074 *** `rst-insert-list' inserts new list or continues existing lists.
2076 *** A negative prefix argument always works for `rst-adjust'.
2078 *** The window configuration is reset after displaying a TOC.
2080 *** The constant `rst-version' describes the rst.el package version.
2084 *** Support for percent literals and recognition of regular expressions
2085 in method calls without parentheses with more methods, including Cucumber
2088 *** Improved syntax highlighting and indentation.
2090 *** New command `ruby-toggle-block', bound to `C-c {'.
2092 *** Some non-standard keybindings/commands have been removed:
2094 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
2096 **** `ruby-mark-defun'; use `mark-defun'.
2098 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
2099 appropriate settings for the variables `beginning-of-defun-function'
2100 and `end-of-defun-function'.
2102 **** Non-standard keybindings for `backward-kill-word', `comment-region',
2103 `reindent-then-newline-and-indent' and `newline' have been removed.
2105 ** Shell Script mode
2107 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
2109 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
2111 *** `sh-use-smie' lets you choose a new indentation and navigation code.
2115 *** The free software compiler GHDL is supported (and now the default).
2117 *** Support for the VHDL-AMS packages has been added/updated.
2119 *** Updated to the 2002 revision of the VHDL standard.
2121 *** Accepts \r and \f as whitespace.
2125 *** The faces used by Apropos are now directly customizable.
2126 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
2127 see the `apropos' Custom group for details.
2129 *** The old options whose values specified faces to use have been removed
2130 (i.e. `apropos-symbol-face', `apropos-keybinding-face', `apropos-label-face',
2131 `apropos-match-face' and `apropos-property-face'.).
2135 *** This package has been rewritten to use Tabulated List mode.
2137 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
2138 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
2142 *** Algebraic simplification mode is now the default.
2143 To restrict to the limited simplifications given by the former
2144 default simplification mode, use `m I'.
2148 *** You can customize the header text that appears above each calendar month.
2149 See the variable `calendar-month-header'.
2151 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
2153 *** The calendars produced by cal-html include holidays.
2154 Customize `cal-html-holidays' to change this.
2158 *** The major modes from the parser generators "Bovine" and "Wisent"
2159 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
2160 are in `auto-mode-alist', and the corresponding manuals are included.
2164 **** Menu support for the "Configuration" feature. This allows users to
2165 choose the active configuration (such as debug or install) from the menu.
2167 **** New command `ede-set' to interactively set project-local variables.
2169 **** Support for compiling, debugging, and running in "generic" projects.
2171 **** Autoconf editing support for M4 macros with complex arguments.
2173 **** Compilation support for the "linux" project type.
2175 **** "simple" projects have been removed; use "generic" projects instead.
2179 **** Support for parsing #include statements inside a namespace in C/C++.
2181 **** Improved support for 'extern "C"' declarations in C/C++.
2183 **** The ability to ignore more common special C/C++ preprocessor symbols,
2184 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
2185 If available, include cdefs.h as an additional source of preprocessor symbols.
2187 **** Improved C/C++ function pointer parsing.
2189 **** In Python, support for converting imports to include file names.
2191 **** Ability to dynamically determine the Python load path.
2193 **** Support for the Python 'WITH' and 'AT' keywords.
2195 **** Improved tooltip completion.
2199 **** The SRecode manual is now included.
2201 **** Tag generation supports constructor/destructor settings and system
2202 include differentiation.
2204 **** Addition of 'Framework' support: Frameworks are specified when a
2205 particular kind of library (such as Android) is needed in a common language
2208 **** Support for nested templates and let variables override based on priority.
2210 **** Support for merging tables from multiple related modes, such as
2211 default -> c++ -> arduino.
2213 ** Compile has a new option `compilation-always-kill'.
2217 *** `custom-reset-button-menu' now defaults to t.
2219 *** Non-option variables are never matched in `customize-apropos' and
2220 `customize-apropos-options' (i.e., the prefix argument does nothing for
2221 these commands now).
2225 *** The variables `term-default-fg-color' and `term-default-bg-color'
2226 are now deprecated in favor of the customizable face `term'.
2228 *** You can customize how to display ANSI terminal colors and styles
2229 by customizing the corresponding `term-color-<COLOR>',
2230 `term-color-underline' and `term-color-bold' faces.
2234 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
2236 *** Remote processes are now also supported on remote MS-Windows hosts.
2240 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
2241 Previously, this slot stored semicolon-separated attribute-value pairs
2242 appended to some imap URLs, but this is not compatible with RFC 3986.
2243 So now the `filename' slot stores the entire path and query components,
2244 and the `attributes' slot is always nil.
2246 *** New function `url-encode-url' for encoding a URI string.
2247 The `url-retrieve' function now uses this to encode its URL argument,
2248 in case that is not properly encoded.
2250 ** notifications.el supports now version 1.2 of the Notifications API.
2251 The function `notifications-get-capabilities' returns the supported
2254 ** Flymake uses fringe bitmaps to indicate errors and warnings.
2255 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
2256 `flymake-warning-bitmap'.
2258 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
2259 specifying URL types that should be converted to remote file names at
2260 the FFAP prompt. The default is now '("ftp").
2262 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
2263 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
2265 ** New option `mouse-avoidance-banish-position' specifies where the
2266 `banish' mouse avoidance setting moves the mouse.
2268 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
2269 closing brackets to be aligned with the line of the opening bracket.
2271 ** In Proced mode, new command `proced-renice' renices marked processes.
2273 ** New option `async-shell-command-buffer' specifies the buffer to use
2274 for a new asynchronous `shell-command' when the default output buffer
2275 `*Async Shell Command*' is already in use.
2277 ** SQL mode has a new option `sql-db2-escape-newlines'.
2278 If non-nil, newlines sent to the command interpreter will be escaped
2279 by a backslash. The default does not escape the newlines and assumes
2280 that the sql statement will be terminated by a semicolon.
2282 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
2283 (and modes that derive from it), sorts the column at point, or the Nth
2284 column if a numeric prefix argument is given.
2286 ** `which-func-modes' now defaults to t, so Which Function mode, when
2287 enabled, applies to all applicable major modes.
2289 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
2292 ** Follow mode no longer works by using advice.
2293 The option `follow-intercept-processes' has been removed.
2295 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
2297 ** Hooks renamed to avoid obsolete "-hooks" suffix:
2298 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
2299 *** semantic-change-hooks -> semantic-change-functions
2300 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
2301 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
2302 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
2303 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
2304 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
2305 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
2306 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
2307 *** rcirc-activity-hooks -> rcirc-activity-functions
2308 *** rcirc-print-hooks -> rcirc-print-functions
2309 *** dbus-event-error-hooks -> dbus-event-error-functions
2310 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
2311 *** checkdoc-style-hooks -> checkdoc-style-functions
2312 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2313 *** archive-extract-hooks -> archive-extract-hook
2314 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2315 *** hfy-post-html-hooks -> hfy-post-html-hook
2316 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2317 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2318 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2319 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2321 ** Obsolete packages
2324 In most cases, assoc+member+push+delq work just as well.
2325 And in any case it's just a terrible package: ugly semantics, terrible
2326 inefficiency, and not namespace-clean.
2335 * Incompatible Lisp Changes in Emacs 24.3
2337 ** Docstrings starting with `*' no longer indicate user options.
2338 Only variables defined using `defcustom' are considered user options.
2339 The function `user-variable-p' is now an obsolete alias for
2340 `custom-variable-p'.
2342 ** The return values of `defalias', `defun' and `defmacro' have changed,
2343 and are now undefined. For backwards compatibility, `defun' and
2344 `defmacro' currently return the name of the newly defined
2345 function/macro, but this should not be relied upon.
2347 ** `random' by default now returns a different random sequence in
2348 every Emacs run. Use `(random S)', where S is a string, to set the
2349 random seed to a value based on S, in order to get a repeatable
2350 sequence in later calls.
2352 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2353 that substring is inserted literally even if the LITERAL arg is
2354 non-nil, instead of causing an error to be signaled.
2356 ** `select-window' now always makes the window's buffer current.
2357 It does so even if the window was selected before.
2359 ** The function `x-select-font' can return a font spec, instead of a
2360 font name as a string. Whether it returns a font spec or a font name
2361 depends on the graphical library.
2363 ** `face-spec-set' no longer sets frame-specific attributes when the
2364 third argument is a frame (that usage was obsolete since Emacs 22.2).
2366 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2368 ** The CL package's `get-setf-method' function no longer exists.
2369 Generalized variables are now part of core Emacs Lisp, and implemented
2370 differently to the way cl.el used to do it. It is not possible to
2371 define a compatible replacement for `get-setf-method'. See the file
2372 gv.el for internal details of the new implementation.
2374 ** The arguments of `dbus-register-signal' are no longer just strings,
2375 but keywords or keyword-string pairs. The old argument list will
2376 still be supported for Emacs 24.x.
2378 ** Miscellaneous name changes
2379 Some Lisp symbols have been renamed to correct their spelling,
2380 or to be more consistent with standard Emacs terminology.
2382 *** Renamed functions
2383 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2384 **** inactivate-input-method -> deactivate-input-method
2385 **** quail-inactivate -> quail-deactivate
2386 **** robin-inactivate -> robin-deactivate
2387 **** viper-inactivate-input-method -> viper-deactivate-input-method
2388 **** viper-inactivate-input-method-action ->
2389 viper-deactivate-input-method-action
2390 **** ucs-input-inactivate -> ucs-input-deactivate
2393 The old hooks are still supported for backward compatibility, but they
2394 are deprecated and will be removed eventually.
2395 **** input-method-inactivate-hook -> input-method-deactivate-hook
2396 **** robin-inactivate-hook -> robin-deactivate-hook
2397 **** quail-inactivate-hook -> quail-deactivate-hook
2399 *** Renamed variables
2400 **** follow-deactive-menu -> follow-inactive-menu
2401 **** inactivate-current-input-method-function ->
2402 deactivate-current-input-method-function
2404 ** Some obsolete functions, variables, and faces have been removed:
2405 *** `last-input-char', `last-command-char', `unread-command-char'
2406 *** `facemenu-unlisted-faces'
2407 *** `rmail-decode-mime-charset'
2408 *** `iswitchb-read-buffer'
2409 *** `sc-version', `sc-submit-bug-report'
2410 *** `set-char-table-default'
2411 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2412 *** `compile-internal'
2414 *** `mode-line-inverse-video'
2415 *** `follow-mode-off-hook'
2416 *** `cvs-commit-buffer-require-final-newline'
2417 (use `log-edit-require-final-newline' instead)
2418 *** `cvs-changelog-full-paragraphs'
2419 (use `log-edit-changelog-full-paragraphs' instead)
2420 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2421 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2422 *** `vc-master-templates' (use `vc-handled-backends' instead)
2423 *** `vc-checkout-carefully'
2426 * Lisp Changes in Emacs 24.3
2428 ** CL-style generalized variables are now in core Elisp.
2429 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2430 You can define your own generalized variables using `gv-define-simple-setter',
2431 `gv-define-setter', etc.
2433 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2434 This can significantly speed up execution of non-byte-compiled code,
2435 but can also bump into previously unnoticed cyclic dependencies.
2436 These are generally harmless: they will simply cause the macro calls
2437 to be left for later expansion (as before), but will result in a
2438 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2439 You may wish to restructure your code so this does not happen.
2441 ** New sampling-based Elisp profiler.
2442 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2443 When finished, use M-x profiler-stop. The sampling rate can be based on
2444 CPU time or memory allocations.
2446 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2447 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2449 ** New macros `setq-local' and `defvar-local'.
2451 ** Face underlining can now use a wave.
2453 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2454 of `read-regexp' accepts a string ending with a colon and space, and its
2455 second argument DEFAULTS can be a list of strings accessible via `M-n'
2456 in the minibuffer ahead of other hard-coded useful regexp-related values.
2457 More commands use `read-regexp' now to read their regexp arguments.
2461 *** New function `completion-table-with-quoting' to handle completion
2462 in the presence of quoting, such as file completion in shell buffers.
2464 *** New function `completion-table-subvert' to use an existing completion
2465 table, but with a different prefix.
2469 *** New error type and new function `user-error'.
2470 These do not trigger the debugger.
2472 *** New option `debugger-bury-or-kill', saying what to do with the
2473 debugger buffer when exiting debug.
2475 *** Set `debug-on-message' to enter the debugger when a certain
2476 message is displayed in the echo area. This can be useful when trying
2477 to work out which code is doing something.
2479 *** New var `inhibit-debugger', automatically set to prevent accidental
2480 recursive invocations.
2484 *** New command `fit-frame-to-buffer' adjusts the frame height to
2487 *** The command `fit-window-to-buffer' can adjust the frame height
2488 if the new option `fit-frame-to-buffer' is non-nil.
2490 *** New macro `with-temp-buffer-window', similar to
2491 `with-output-to-temp-buffer'.
2493 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2496 *** New option `switch-to-buffer-preserve-window-point' to restore a
2497 window's point when switching buffers.
2499 *** New display action alist entries `window-height' and `window-width'
2500 specify the size of new windows created by `display-buffer'.
2502 *** New display action alist entry `pop-up-frame-parameters', if
2503 non-nil, specifies frame parameters to give any newly-created frame.
2505 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2506 tells display action functions to avoid changing which frame is
2509 *** New display action alist entry `previous-window', if non-nil,
2510 specifies window to reuse in `display-buffer-in-previous-window'.
2512 *** New display action functions `display-buffer-below-selected',
2513 and `display-buffer-in-previous-window'.
2515 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2516 now accept a third argument to avoid choosing the selected window.
2518 *** Additional values recognized for option `window-combination-limit'.
2520 *** The following variables are obsolete, as they can be replaced by
2521 appropriate entries in the `display-buffer-alist' function introduced
2523 **** `dired-shrink-to-fit'
2524 **** `display-buffer-reuse-frames'
2525 **** `display-buffer-function'
2526 **** `special-display-buffer-names'
2527 **** `special-display-frame-alist'
2528 **** `special-display-function'
2529 **** `special-display-regexps'
2533 *** `current-time-string' no longer requires that its argument's year
2534 must be in the range 1000..9999. It now works with any year supported
2535 by the underlying C implementation.
2537 *** `current-time' now returns extended-format time stamps
2538 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2539 PSEC is typically a multiple of 1000 on current machines. Other
2540 functions that use this format, such as `file-attributes' and
2541 `format-time-string', have been changed accordingly. Old-format time
2542 stamps are still accepted.
2544 *** The format of timers in `timer-list' and `timer-idle-list' is now
2545 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2546 The PSECS slot is new, and uses picosecond resolution. It can be
2547 accessed via the new `timer--psecs' accessor.
2549 *** Last-modified time stamps in undo lists now are of the form
2550 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2554 *** Improved security when handling persistent objects:
2556 **** `eieio-persistent-read' now features optional arguments for specifying
2557 the class to load, as well as a flag stating whether subclasses are allowed;
2558 if provided, other classes will be rejected by the reader. For
2559 compatibility with existing code, if the class is omitted only a
2562 **** New specialized reader for pulling in classes and signaling errors
2563 without evaluation of suspicious code.
2565 **** All slots that contain objects must have a :type. Slots with lists
2566 of objects must use a new type predicate for a list of an object type.
2568 *** Support for `find-function' and similar utilities, through the addition
2569 of filename support to generated symbols.
2571 ** Floating point functions now always return special values like NaN,
2572 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2573 Previously, they returned NaNs on some platforms but signaled errors
2574 on others. The affected functions are acos, asin, tan, exp, expt,
2575 log, log10, sqrt, and mod.
2577 ** New fringe bitmap `exclamation-mark'.
2579 ** Miscellaneous changes to special forms and macros
2581 *** `defun' and `defmacro' are now macros rather than special forms.
2583 *** `kbd' is now a function rather than a macro.
2585 ** Miscellaneous new functions
2587 *** `set-temporary-overlay-map' sets up a temporary keymap that
2588 takes precedence over most other maps for a short while (normally one key).
2590 *** `autoloadp' tests if its argument is an autoloaded object.
2592 *** `autoload-do-load' performs the autoloading operation.
2594 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2596 *** `file-name-base' returns a file name sans directory and extension.
2598 *** `function-get' fetches a function property, following aliases.
2600 *** `posnp' tests if an object is a `posn'.
2602 *** `system-users' returns the user names on the system.
2604 *** `system-groups' returns the group names on the system.
2606 *** `tty-top-frame' returns the topmost frame of a text terminal.
2608 ** The following functions and variables are obsolete:
2609 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2610 *** `buffer-has-markers-at'
2611 *** `macro-declaration-function' (use `macro-declarations-alist')
2612 *** `window-system-version' (provides no useful information)
2613 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2614 *** `query-replace-interactive'
2615 *** `font-list-limit' (has had no effect since Emacs < 23)
2618 * Changes in Emacs 24.3 on Non-Free Operating Systems
2620 ** Cygwin builds can use the native MS Windows user interface.
2621 Pass `--with-w32' to configure. The default remains the X11 interface.
2623 ** Two new functions are available in Cygwin builds:
2624 `cygwin-convert-file-name-from-windows' and
2625 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2626 code to access the Cygwin file-name mapping machinery to convert
2627 between Cygwin and Windows-native file and directory names.
2629 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2630 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2631 `mouse-autoselect-window'.
2633 ** On MS Windows Vista and later Emacs now supports symbolic links.
2635 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2636 support for libxml2, even if its presence is detected.
2638 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2640 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2641 directories to the search path. You must add them yourself if you want them.
2644 * Changes in Emacs 24.2
2646 ** This is mainly a bug-fix release.
2649 * Installation Changes in Emacs 24.1
2651 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2652 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2653 also depend on Gtk+. You can disable them with --without-rsvg and
2656 ** Emacs can be compiled with GnuTLS support.
2657 This happens by default if a suitably recent version of the library is
2658 found at build time. To prevent this, use the configure option
2659 `--without-gnutls'. See below for GnuTLS features.
2661 ** Emacs can be compiled with SELinux support.
2662 This happens by default if a suitably recent version of the library is
2663 found at build time. To prevent this, use the configure option
2664 `--without-selinux'. See below for SELinux features.
2666 ** Emacs can be compiled with ImageMagick support.
2667 This happens by default if a suitably recent version of the library is
2668 found at build time. To prevent this, use the configure option
2669 `--without-imagemagick'. See below for ImageMagick features.
2670 This feature is not available for the Nextstep or MS ports.
2672 ** Emacs can be compiled with libxml2 support.
2673 This happens by default if a suitably recent version of the library is
2674 found at build time. To prevent this, use the configure option
2675 `--without-xml2'. See below for libxml2 features.
2677 ** By default, the installed Info and man pages are compressed.
2678 You can disable this by configuring --without-compress-info.
2680 ** New configure option --with-wide-int.
2681 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2682 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2685 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2686 These provide no new functionality, they just remove the need to edit
2687 lib-src/Makefile by hand in order to use the associated features.
2689 ** New configure option --enable-use-lisp-union-type.
2690 This is only useful for Emacs developers to debug certain types of bugs.
2691 This is not a new feature; only the configure flag is new.
2693 ** The standalone programs digest-doc and sorted-doc are removed.
2694 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2696 ** The standalone program `fakemail' is removed.
2697 If you need it, feedmail.el provides a superset of the functionality.
2700 * Startup Changes in Emacs 24.1
2702 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2703 command line arguments, and the EMACS_UNIBYTE environment variable, no
2704 longer have any effect. (They were declared obsolete in Emacs 23.)
2706 ** New command line option `--no-site-lisp' removes site-lisp directories
2707 from load-path. -Q now implies this. This option does not affect the
2708 EMACSLOADPATH environment variable (and hence has no effect for
2712 * Changes in Emacs 24.1
2716 *** Many packages now use the `completion-at-point' command,
2717 rather than implementing separate completion commands.
2719 *** `completion-at-point' now handles tags and semantic completion.
2721 *** Completion in a non-minibuffer now tries to detect the end of completion
2722 and pops down the *Completions* buffer accordingly.
2724 *** New option `completion-cycle-threshold' allows completion cycling.
2726 *** New option `completion-category-overrides' for overriding the
2727 default completion style in certain circumstances.
2729 *** New completion style `substring'.
2731 *** Completion of buffer names uses `substring' completion by default.
2733 *** The option `widget-complete-field' has been removed.
2737 *** The first time you try sending mail, Emacs asks for a mail method.
2738 This is implemented by a new default for `send-mail-function', which
2739 is `sendmail-query-once'. This offers to use the smtpmail package, or
2740 to use the old defaults relying on external mail facilities
2741 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2742 `mailclient-send-it' on Windows).
2744 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2745 transfers the report to your desktop's preferred mail client, if there
2746 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2749 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2750 and Mail mode changes
2752 ** Emacs server and client changes
2754 *** New option `server-port' specifies the port for TCP Emacs servers.
2756 *** New emacsclient argument -q/--quiet suppresses some status messages.
2758 *** New emacsclient argument --frame-parameters specifies the frame
2759 parameters of any newly-created graphical frame.
2761 *** If emacsclient shuts down due to Emacs signaling an error,
2762 its exit status is 1.
2764 *** New emacsclient argument --parent-id ID.
2765 This opens a client frame in parent X window ID, via XEmbed, similar
2766 to the --parent-id argument to Emacs.
2768 ** Internationalization changes
2770 *** Emacs now supports display and editing of bidirectional text.
2771 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2772 displayed in the correct visual order as expected by users of those
2773 scripts. The display reordering is a "full bidirectionality" class
2774 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2775 with no RTL text should look exactly the same as before.
2777 **** New buffer-local variable `bidi-display-reordering'.
2778 To disable display reordering in a buffer, change this to nil.
2780 **** New buffer-local variable `bidi-paragraph-direction'.
2781 If nil (the default), Emacs determines the base direction of each
2782 paragraph from its text, as specified by the UBA. Setting the value
2783 to `right-to-left' or `left-to-right' forces a base direction on each
2786 Paragraphs with right-to-left base direction are displayed starting at
2787 the right window edge.
2789 *** Enhanced support for characters with no glyphs in available fonts,
2790 or, on text terminals, characters that cannot be encoded by the
2791 terminal coding system. The new option `glyphless-char-display-control'
2792 specifies how to display them: as a hexadecimal code in a box, a thin
2793 1-pixel space, an empty box, etc.
2795 *** New input methods for Farsi and Bulgarian
2796 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2798 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2799 (U+2010 and U+2011).
2801 *** New Hebrew translation of the Emacs Tutorial.
2802 Type `C-u C-h t' to choose it in case your language setup doesn't
2803 automatically select it.
2805 ** An Emacs Lisp package manager is now included.
2806 This is a convenient way to download and install additional packages,
2807 from a package repository at http://elpa.gnu.org.
2809 *** M-x list-packages shows a list of packages, which can be
2810 selected for installation.
2812 *** New command `describe-package', bound to `C-h P'.
2814 *** By default, all installed packages are loaded automatically when
2815 Emacs starts up. To disable this, set `package-enable-at-startup' to
2816 nil. To specify the packages to load, customize `package-load-list'.
2818 ** Custom theme changes
2820 *** New command `M-x customize-themes', which provides a convenient
2821 interface for enabling and disabling Custom themes.
2823 *** New option `custom-theme-load-path' is the load path for themes.
2824 Emacs no longer looks for Custom themes in `load-path'. The default
2825 value of `custom-theme-load-path' says to look for themes in
2826 `custom-theme-directory', followed by a subdirectory of
2827 `data-directory' named "themes/", which contains a small selection of
2828 built-in Custom themes.
2830 *** New option `custom-safe-themes' records known-safe theme files.
2831 If a theme is not in this list, Emacs queries before loading it, and
2832 offers to save the theme to `custom-safe-themes' automatically. By
2833 default, all themes included in Emacs are treated as safe.
2835 ** Improved GTK integration
2837 *** GTK scroll-bars are now placed on the right by default.
2838 The function `set-scroll-bar-mode' can change this.
2840 *** GTK tool bars can have just text, just images or images and text.
2841 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2842 the default is taken from desktop settings.
2844 *** GTK tool bars can be placed on any edge of the frame.
2845 The frame-parameter tool-bar-position controls this. It takes the
2846 values top, left, right or bottom. The Options => Show/Hide menu has
2849 *** The default colors for selected text (the `region' face) are taken
2850 from the GTK theme when Emacs is built with GTK.
2852 *** Emacs uses GTK tooltips by default if built with GTK.
2853 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2855 ** Graphical interface changes
2857 *** On graphical displays, the mode-line no longer ends in dashes.
2858 Also, the first dash (which does not indicate anything) is just
2859 displayed as a space.
2861 *** `menu-bar-select-buffer-function' lets you choose another operation
2862 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2864 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2865 built with Xft. These fonts can be set via X resources, for example:
2866 Emacs.pane.menubar.font: Courier-12
2870 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2871 or if it receives a SIGINT signal in batch mode.
2873 *** `kill-emacs-hook' is now also run in batch mode.
2874 Third-party code which adds to `kill-emacs-hook' should check if they
2875 do the right thing in batch mode.
2877 ** Scrolling changes
2879 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2880 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2881 of buffer at first key-press (instead they move to top/bottom of buffer)
2882 when `scroll-error-top-bottom' is non-nil.
2884 *** New option `scroll-error-top-bottom' (see above).
2886 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2887 scroll a line instead of full screen.
2889 *** New property `scroll-command' should be set on a command's symbol to
2890 define it as a scroll command affected by `scroll-preserve-screen-position'.
2892 *** If you customize `scroll-conservatively' to a value greater than 100,
2893 Emacs will never recenter point in the window when it scrolls due to
2894 cursor motion commands or commands that move point (e.f., `M-g M-g').
2895 Previously, you needed to use `most-positive-fixnum' as the value of
2896 `scroll-conservatively' to achieve the same effect.
2898 *** "Aggressive" scrolling now honors the scroll margins.
2899 If you customize `scroll-up-aggressively' or
2900 `scroll-down-aggressively' and move point off the window, Emacs now
2901 scrolls the window so as to avoid positioning point inside the scroll
2904 ** Basic SELinux support has been added.
2905 This requires Emacs to be linked with libselinux at build time.
2907 *** Emacs preserves the SELinux file context when backing up.
2908 Also, the function `copy-file' has an extra optional argument for
2909 preserving SELinux context, and the return value of `backup-buffer'
2910 now includes the SELinux context.
2912 *** New functions `file-selinux-context' and `set-file-selinux-context'
2913 get and set the SELinux context of a file.
2917 *** `delete-by-moving-to-trash' now only affects commands that specify
2918 trashing. This avoids inadvertently trashing temporary files.
2920 *** Calling `delete-file' or `delete-directory' with a prefix argument
2921 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2923 ** File- and directory-local variable changes
2925 *** You can stop directory local vars from applying to subdirectories.
2926 Add an element (subdirs . nil) to the alist portion of any variables
2927 settings to indicate that the section should not apply to
2930 *** Directory local variables can apply to some file-less buffers.
2931 Affected modes include dired, vc-dir, and log-edit. For example,
2932 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2933 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2934 `hack-dir-local-variables-non-file-buffer' to support this.
2936 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2937 Instead, use "eval: (minor-mode 1)".
2939 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2940 to `inhibit-local-variables-regexps'. As the name suggests, it now
2941 applies to ALL file local variables, not just -*- lines. The
2942 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2947 *** The `quit-window' command now restores the last buffer displayed
2948 in the quitted window.
2950 *** Resizing an Emacs frame now preserves proportional window sizes,
2951 modulo restrictions like window minimum sizes and fixed-size windows.
2953 *** The behavior of `display-buffer' is now customizable in detail.
2955 **** New option `display-buffer-base-action' specifies a list of
2956 user-determined display "actions" (functions and optional arguments
2957 for choosing the displaying window).
2959 This takes precedence over the default display action, which is
2960 specified by `display-buffer-fallback-action'.
2962 **** New option `display-buffer-alist' maps buffer name regexps to
2963 display actions, taking precedence over `display-buffer-base-action'.
2965 *** New option `window-combination-limit'.
2966 The new option `window-combination-limit' allows to return the space
2967 obtained for resizing or creating a window more reliably to the window
2968 from which such space was obtained.
2970 *** New option `window-combination-resize'.
2971 The new option `window-combination-resize' allows to split a window that
2972 otherwise cannot be split because it's too small by stealing space from
2973 other windows in the same combination. Subsequent resizing or deletion
2974 of the window will resize all windows in the same combination as well.
2976 *** New option `frame-auto-hide-function' lets you choose between
2977 iconifying or deleting a frame when burying a buffer in a dedicated
2978 frame, or quitting a window showing a buffer in a frame of its own.
2980 *** New commands `maximize-window' and `minimize-window'.
2981 These maximize and minimize the size of a window within its frame.
2983 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2984 These functions allow to navigate through the live buffers that have
2985 been shown in a specific window.
2987 ** Minibuffer changes
2989 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2990 This is handy for minibuffer-only frames, and is also used for the feature
2991 where mouse-1 pops up *Messages*"', which can now easily be changed.
2993 *** Minibuffers set `truncate-lines' to nil.
2994 If you want to change the value to something else, you could use
2995 for example `minibuffer-setup-hook'.
2997 ** `auto-mode-case-fold' is now enabled by default.
2999 ** `backup-by-copying-when-mismatch' now defaults to t.
3001 ** New basic faces `error', `warning', `success'.
3002 These are used to highlight text indicating failure, caution or
3003 successful operation.
3005 ** New option `list-colors-sort' defines the color sort order
3006 for `list-colors-display'.
3008 ** The variable `focus-follows-mouse' now always defaults to nil.
3011 * Editing Changes in Emacs 24.1
3015 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
3016 `isearch-yank-line'.
3018 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
3019 `isearch-yank-kill'.
3021 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
3023 ** New commands `count-words-region' and `count-words'.
3025 *** M-= is bound to `count-words-region', not `count-lines-region'.
3026 The `count-words-region' command, when called interactively, reports
3027 the number of lines, words, and characters in the region. It is a
3028 superset of the old `count-lines-region', which is now an obsolete
3031 ** The command `just-one-space' (M-SPC), if given a negative argument,
3032 also deletes newlines around point.
3036 *** New option `delete-active-region'.
3037 If non-nil, [delete] and DEL delete the region if it is active and no
3038 prefix argument is given. If set to `kill', those commands kill
3041 *** New command `delete-forward-char', bound to [delete].
3042 This is meant for interactive use, and obeys `delete-active-region'.
3043 The command `delete-char' does not obey `delete-active-region'.
3045 *** `delete-backward-char' is now a Lisp function.
3046 Apart from obeying `delete-active-region', its behavior is unchanged.
3047 However, the byte compiler now warns if it is called from Lisp; Lisp
3048 callers should use delete-char with a negative argument instead.
3050 *** The option `mouse-region-delete-keys' has been deleted.
3052 ** Selection changes.
3054 The default handling of clipboard and primary selections has been
3055 changed to conform with modern X applications. In short, most
3056 commands for killing and yanking text now use the clipboard, while
3057 mouse commands use the primary selection.
3059 In the following, we provide a list of these changes, followed by a
3060 list of steps to get the old behavior back if you prefer that.
3062 *** `select-active-regions' now defaults to t.
3063 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
3064 the kill ring. The selected text is put in the primary selection, if
3065 the system possesses a separate primary selection facility (e.g. X).
3067 **** `select-active-regions' also accepts a new value, `only'.
3068 This means to only set the primary selection for temporarily active
3069 regions (usually made by mouse-dragging or shift-selection);
3070 "ordinary" active regions, such as those made with C-SPC followed by
3071 point motion, do not alter the primary selection.
3073 **** `mouse-drag-copy-region' now defaults to nil.
3075 *** mouse-2 is now bound to `mouse-yank-primary'.
3076 This pastes from the primary selection, ignoring the kill-ring.
3077 Previously, mouse-2 was bound to `mouse-yank-at-click'.
3079 *** `x-select-enable-clipboard' now defaults to t on all platforms.
3081 *** `x-select-enable-primary' now defaults to nil.
3082 Thus, commands that kill text or copy it to the kill-ring (such as
3083 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
3085 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
3086 exactly equivalent to M-w, C-w, and C-y respectively.
3088 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
3089 non-nil by default, as Windows does not support the primary selection
3090 between applications.
3092 *** To return to the previous behavior, do the following:
3094 **** Change `select-active-regions' to nil.
3095 **** Change `mouse-drag-copy-region' to t.
3096 **** Change `x-select-enable-primary' to t (on X only).
3097 **** Change `x-select-enable-clipboard' to nil.
3098 **** Bind `mouse-yank-at-click' to mouse-2.
3100 *** Support for X cut buffers has been removed.
3102 *** X clipboard managers are now supported.
3103 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
3105 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
3106 in the current rectangle. With a prefix argument, this prompts for a
3107 number to count from and for a format string.
3109 ** `redisplay-dont-pause' now defaults to t.
3110 This makes Emacs feel more responsive to editing commands that arrive
3111 at high rate, e.g. if you lean on some key, because stopping redisplay
3112 in the middle (when this variable is nil) forces more expensive
3113 updates later on, and Emacs appears to be unable to keep up.
3115 ** The behavior of <TAB> for active regions in Text mode has changed.
3116 In Text and related modes, typing <TAB> (`indent-for-tab-command')
3117 when the region is active causes Emacs to indent all the lines in the
3118 region, aligning them with the line previous to the first line in the
3119 region (or with the left margin if there is no previous line).
3121 ** When `occur' is called with a prefix argument, matching strings are
3122 collected into the `*Occur*' buffer without line numbers. If there
3123 are parenthesized subexpressions in the specified regexp, `occur'
3124 reads replacement text that may contain \\& and \\N whose convention
3125 follows `replace-match'.
3128 * Changes in Specialized Modes and Packages in Emacs 24.1
3130 ** Archive Mode has basic support for browsing and updating 7z archives.
3134 *** BibTeX mode now supports biblatex.
3135 Use the variable `bibtex-dialect' to select different BibTeX dialects.
3136 `bibtex-entry-field-alist' is now an obsolete alias for
3137 `bibtex-BibTeX-entry-alist'.
3139 *** New command `bibtex-search-entries', bound to C-c C-a.
3141 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
3143 *** New variable `bibtex-search-entry-globally'.
3147 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
3149 *** The default browser used by the package is now the "xdg-open" program,
3150 on platforms that support it. This calls your desktop's preferred browser.
3154 *** Support for musical notes.
3156 *** Support for logarithmic units.
3158 *** No longer uses the tex prefix for TeX specific unit names when
3159 using TeX or LaTeX mode.
3161 *** New option to highlight selections using faces.
3163 *** `calc-histogram' has the option of using a vector to determine the bins.
3165 *** New "O" option prefix.
3167 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
3169 ** Calendar, Diary, and Appt
3171 *** Diary entries can contain non-printing "comments".
3172 See the variable `diary-comment-start'.
3174 *** Appointments can specify their individual warning times.
3175 See the variable `appt-warning-time-regexp'.
3177 *** The function specified by `appt-disp-window-function' may be passed
3178 lists of arguments if multiple appointments are due at similar times.
3179 If you are using a custom function for this, you should update it.
3181 *** New function `diary-hebrew-birthday'.
3183 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
3184 may no longer be nil, but must all be strings.
3186 *** The obsolete (since Emacs 22.1) method of enabling the appt
3187 package by adding `appt-make-list' to `diary-hook' has been removed.
3188 Use `appt-activate' instead.
3190 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
3191 appt-issue-message (use the function appt-activate)
3192 appt-visible/appt-msg-window (use the variable appt-display-format)
3194 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
3195 view-diary-entries, list-diary-entries, show-all-diary-entries
3199 *** New feature to "guess" the style in an existing buffer.
3200 The main entry point is M-x c-guess.
3202 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
3204 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
3205 Thus C-M-a will, by default, go to the beginning of the immediate function,
3208 *** "Macros with semicolons" can be registered for correct indentation.
3209 Where such a macro ends a line (no semicolon) the next statement is no longer
3210 parsed as a statement continuation.
3212 ** Comint and modes derived from it use the standard completion code.
3216 *** Compilation mode can be used without Font Lock mode.
3217 `compilation-parse-errors-function' is now obsolete.
3219 *** New variable `compilation-filter-start', which is bound while
3220 `compilation-filter-hook' runs. It records the start position of the
3221 text inserted by `compilation-filter'.
3223 *** `compilation-error-screen-columns' and `compilation-first-column'
3224 are obeyed in the editing buffer. So programming language modes can
3225 set them, whereas previously only the value in the *Compilation*
3230 *** Customize buffers now contain a search field.
3231 The search is performed using `customize-apropos'.
3232 To turn off the search field, set `custom-search-field' to nil.
3234 *** Options in customize group buffers start out hidden if not customized.
3235 Use the arrow to the left of the option name to toggle visibility.
3237 *** custom-buffer-sort-alphabetically now defaults to t.
3239 *** The color widget now has a "Choose" button, which allows you to
3240 choose a color via `list-colors-display'.
3244 *** It is now possible to access buses other than the default system
3247 *** The `dbus-register-method' and `dbus-register-property' functions
3248 optionally do not register names.
3250 *** The new function `dbus-register-service' registers a known service
3251 name on a D-Bus without also registering a property or a method.
3255 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
3256 if called with a prefix argument, read a file name from the minibuffer
3257 instead of using the current buffer.
3259 *** The "dired local variables" feature of Dired-x is obsolete.
3260 The standard directory local variables feature replaces it.
3264 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
3265 controlling attempts to autojoin a channel.
3267 *** New variable `erc-coding-system-precedence': If we use `undecided'
3268 as the server coding system, this variable will then be consulted.
3269 The default is to decode strings that can be decoded as utf-8 as
3270 utf-8, and do the normal `undecided' decoding for the rest.
3274 *** The default value of `eshell-directory-name' has changed
3275 to be an "eshell" directory in `user-emacs-directory'.
3276 The old "~/.eshell/" directory is still used if it exists, though.
3280 *** The M-x gdb command now uses the GDB Machine Interface protocol.
3281 It now supports multithread non-stop debugging and simultaneous
3282 debugging of several threads.
3286 *** RET (`image-toggle-animation') toggles animation, if applicable.
3287 Animation plays once, unless the option `image-animate-loop' is non-nil.
3291 *** New command M-x info-display-manual displays a named Info manual.
3292 If that manual is already visited in some Info buffer, it displays
3293 that buffer. (This is handy if you have many manuals in many *info*
3294 buffers, and don't remember the name of the buffer visiting the manual
3295 you want to consult.) Otherwise, it loads and displays the manual.
3297 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
3298 This is for compatibility with the stand-alone Info reader program,
3299 and also because `Info-edit' is a rarely used command that is disabled
3302 ** Mail mode changes (not Message mode)
3304 *** New command M-x mail-add-attachment for adding MIME attachments
3306 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
3307 (Its name is misleading, since it has nothing to do with MIME
3308 attachments.) The old name is now an obsolete alias to the new name.
3310 ** MH-E has been updated to MH-E version 8.3.1.
3311 See MH-E-NEWS for details.
3313 ** Modula-2 mode provides auto-indentation.
3315 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3317 ** nXML mode no longer binds C-RET to `nxml-complete'.
3318 Completion is now performed via `completion-at-point', bound to C-M-i
3319 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3320 default), this performs tag completion.
3322 ** Org mode has been updated to version 7.8.09.
3323 See ORG-NEWS for details.
3325 ** Prolog mode has been completely revamped, with lots of additional
3326 functionality such as more intelligent indentation, electricity,
3327 support for more variants, including Mercury, and a lot more.
3331 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3332 in the Rmail incoming message.
3334 *** The variable `rmail-message-filter' no longer has any effect.
3335 This change was made in Emacs 23.1 but was not advertised at the time.
3336 Try using `rmail-show-message-hook' instead.
3340 *** M-x shell prompts for the shell path name if the default directory
3341 is a remote file name and neither the environment variable $ESHELL nor
3342 the variable `explicit-shell-file-name' is set.
3344 *** TAB is now bound to the standard `completion-at-point' command,
3345 which now implements the pcomplete rules for shell command completion.
3349 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3350 if the mail server supports them. This uses either built-in GnuTLS
3351 support, or the starttls.el library. Customize `smtpmail-stream-type'
3354 *** The variable `smtpmail-auth-credentials' has been removed.
3355 By default, the information is now stored in the file ~/.authinfo.
3356 This was the default value of smtpmail-auth-credentials. If you had
3357 customized smtpmail-auth-credentials to a list of user names and
3358 passwords, those settings are not used. During your first connection
3359 to the smtp server, Emacs will prompt for the user name and password,
3360 and offer to save them to ~/.authinfo. Or you can manually copy the
3361 credentials to ~/.authinfo. For example, if you had
3363 (setq smtpmail-auth-credentials
3364 '(("mail.example.org" 25 "jim" "s!cret")))
3366 then the equivalent line in ~/.authinfo would be
3368 machine mail.example.org port 25 login jim password s!cret
3370 See the auth-source manual for more information, e.g. on encrypting
3371 the credentials file.
3373 *** The variable `smtpmail-starttls-credentials' has been removed.
3374 If you had that set, you need to put
3376 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3378 in your ~/.authinfo file instead.
3380 *** SMTPmail defaults to using the address in the From: header as the
3381 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3382 to the address you wish to use instead.
3386 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3387 and `sql-oracle-scan-on'.
3389 *** New options controlling prompting for login parameters.
3390 Each supported product has a custom variable `sql-*-login-params',
3391 which is a list of the parameters to be prompted for before a
3392 connection is established.
3394 *** The command `sql-product-interactive' now takes a prefix argument,
3395 which causes it to prompt for an SQL product.
3397 *** Product-specific SQL interactive commands now take prefix arguments.
3398 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3399 given a prefix argument, prompt for a name for the SQL interactive
3400 buffer. This reduces the need for calling `sql-rename-buffer'.
3402 *** SQL interactive modes suppress command continuation prompts, and
3403 replace tabs with spaces. The first change impacts multiple line SQL
3404 statements entered with C-j between each line, statements yanked into
3405 the buffer and statements sent with `sql-send-*' functions. The
3406 second prevents the MySQL and Postgres interpreters from listing
3407 object name completions when sent text via `sql-send-*' functions.
3409 *** New command `sql-connect' starts a predefined SQLi session,
3410 using the login parameters from `sql-connection-alist'.
3412 *** New "Save Connection" menu item in SQLi buffers.
3413 This gathers the login params specified for the SQLi session, if it
3414 was not started by a connection, and saves them as a new connection.
3416 *** New commands for listing database objects and details:
3417 sql-list-all and sql-list-table.
3419 *** An API for manipulating SQL product definitions has been added.
3423 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3427 *** New inline access method "ksu" (kerberized su).
3429 *** The following access methods are discontinued: "ssh1_old",
3430 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3432 *** The user option `remote-file-name-inhibit-cache' controls whether
3433 remote file attributes are cached for better performance.
3435 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3436 default value to "".
3438 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3439 for remote machines which support SELinux.
3441 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3442 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3443 the degree of parallelism.
3445 ** VC and related modes
3447 *** Support for pulling on distributed version control systems.
3448 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3449 supported (currently with Bzr, Git, and Mercurial), to update the
3450 current branch and working tree. A prefix argument means to prompt
3451 the user for specifics, e.g. a pull location.
3453 *** `vc-update' is now an alias for `vc-pull'.
3455 *** Support for merging on distributed version control systems.
3456 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3457 is supported (currently with Bzr, Git, and Mercurial), to merge
3458 changes from another branch into the current one. It prompts for
3459 specifics, e.g. a merge source.
3461 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3462 shows a diff while querying the user. It defaults to t.
3464 *** Log entries in some Log View buffers can be toggled to display a
3465 longer description by typing RET (log-view-toggle-entry-display).
3466 This is currently supported for Bzr, Git, and Mercurial (to support
3467 another backend, define a `log-view-expanded-log-entry-function').
3468 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3469 use this to display the full log entry for the revision at point.
3471 *** New command `vc-ediff' allows visual comparison of two revisions
3472 of a file similar to `vc-diff', but using ediff backend.
3474 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3475 this was not advertised at the time.
3477 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3478 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3479 this was not advertised at the time.
3485 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3487 *** partial-completion-mode (complete.el) is obsolete.
3488 You can get a comparable behavior with:
3489 (setq completion-styles '(partial-completion initials))
3490 (setq completion-pcm-complete-word-inserts-delimiters t)
3492 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3494 *** pgg is obsolete (use EasyPG instead).
3496 *** sregex.el is obsolete, since rx.el is a strict superset.
3498 *** s-region.el and pc-select.el are obsolete.
3499 They are superseded by shift-select-mode, enabled by default since 23.1.
3501 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3505 *** The Landmark game is now invoked with `landmark', not `lm'.
3506 Its functions and variables have been similarly renamed.
3508 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3509 (This interfered with cua-mode.)
3511 *** f90.el has some support for Fortran 2008 syntax.
3513 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3515 *** New command `nato-region' converts text to NATO phonetic alphabet.
3518 * New Modes and Packages in Emacs 24.1
3520 ** Occur Edit mode applies edits made in *Occur* buffers to the
3521 original buffers. It is bound to "e" in Occur mode.
3523 ** New global minor mode electric-pair-mode.
3524 When enabled, typing an open parenthesis automatically inserts the
3525 matching closing one.
3527 ** New global minor mode electric-indent-mode.
3528 When enabled, typing certain characters triggers reindentation.
3529 Major modes wishing to use this can set electric-indent-chars or
3530 electric-indent-functions.
3532 ** New global minor mode electric-layout-mode.
3533 When enabled, typing certain characters automatically inserts newlines.
3534 Major modes wishing to use this can set electric-layout-rules.
3536 ** tabulated-list.el provides a generic major mode for tabulated data,
3537 from which other modes can be derived.
3539 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3541 ** secrets.el is an implementation of the Secret Service API, an
3542 interface to password managers like GNOME Keyring or KDE Wallet. The
3543 Secret Service API requires D-Bus for communication. The command
3544 `secrets-show-secrets' offers a buffer with a visualization of the
3547 ** notifications.el provides an implementation of the Desktop
3548 Notifications API. It requires D-Bus for communication.
3550 ** soap-client.el supports access to SOAP web services from Emacs.
3551 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3553 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3555 ** New emacs-lock.el package.
3556 The previous version has been moved to obsolete/old-emacs-lock.el.
3557 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3558 against exiting Emacs and killing the buffer can be set separately.
3559 The mechanism for automatically turning off protection for buffers
3560 with dead inferior processes has been generalized.
3563 * Incompatible Lisp Changes in Emacs 24.1
3565 ** Passing a nil argument to a minor mode function call now ENABLES
3566 the minor mode unconditionally. This is so that you can write e.g.
3568 (add-hook 'text-mode-hook 'foo-mode)
3570 to enable foo-mode in Text mode buffers, removing the need for
3571 `turn-on-foo-mode' style functions. This affects all mode commands
3572 defined by `define-minor-mode'. If called interactively, the mode
3573 command still toggles the minor mode.
3575 ** The return value of `backup-buffer' has changed.
3576 It is now a list of three elements, where the second element is a list
3577 describing the original file's SELinux context. If Emacs or the
3578 system lacks SELinux support, the context list is (nil nil nil nil).
3579 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3581 ** `char-direction-table' and the `char-direction' function were deleted.
3582 They were buggy and inferior to the new support of bidirectional
3583 editing introduced in Emacs 24. If you need the bidirectional
3584 properties of a character, use `get-char-code-property' with the last
3585 argument `bidi-class'.
3587 ** `copy-directory' now copies the source directory as a subdirectory
3588 of the target directory, if the latter is an existing directory. The
3589 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3590 the contents directly into a pre-existing target directory.
3592 ** For mouse click input events in the text area, the Y pixel
3593 coordinate in the POSITION list now counts from the top of the text
3594 area, excluding any header line. Previously, it counted from the top
3597 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3598 been further reduced. Now a backquote not followed by a space is
3599 always treated as a "new-style" backquote. Please remove all
3600 "old-style" backquotes from your code. If your code uses backquotes
3601 as documented in the Elisp manual, and compiles without warning, then
3602 you have nothing to do in this regard. Code not following the
3603 appropriate conventions may fail to compile.
3605 The most common cause of trouble seems to be an old-style backquote
3606 followed by a newline. Another cause of trouble is vector notation
3607 for key sequence notation: instead of [(control ,)] and [(control ')],
3608 you should write [(control ?,)] and [(control ?')], which will work in
3611 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3612 was not advertised at the time. The function `custom-initialize-delay'
3613 replaced all known uses.
3615 ** `view-buffer' now treats special mode-class in the same way that
3616 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3617 major mode is special).
3619 ** Menu and tool bar changes
3621 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3622 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3623 With these alist entries omitted, `make-frame' checks the value of the
3624 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3625 a menu-bar or tool-bar, respectively. If the alist entries are added,
3626 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3628 *** The menu bar bindings's caches are not used any more.
3629 Use (where-is-internal <def> nil t) instead.
3631 ** Regions created by mouse dragging are now normal active regions,
3632 similar to those created by shift-selection (see Selection changes
3633 above). In previous Emacs versions, these regions were delineated by
3634 `mouse-drag-overlay'; that variable has been removed.
3636 ** The fourth argument of `filter-buffer-substring' has been removed.
3637 If you want to remove text properties from the final result, simply
3638 pass the result through substring-no-properties.
3640 ** cl.el no longer provides `cl-19'.
3642 ** The following obsolete functions and aliases have been removed
3643 (the appropriate new function is given in parentheses; "not needed"
3644 means you can just remove all calls to the function in question):
3646 *** `comint-kill-output' (`comint-delete-output')
3647 *** `decompose-composite-char' (`char-to-string')
3648 *** `outline-visible' (`outline-invisible-p')
3649 *** `internal-find-face' (`facep')
3650 *** `internal-get-face' (`facep and check-face')
3651 *** `frame-update-faces' (not needed)
3652 *** `frame-update-face-colors' (`frame-set-background-mode')
3653 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3654 *** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
3655 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3656 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3657 *** `x-make-font-unbold' (`make-face-unbold')
3658 *** `x-make-font-unitalic' (`make-face-unitalic')
3659 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3660 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3661 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3662 *** `char-bytes' (== 1)
3663 *** `isearch-return-char' (`isearch-printing-char')
3664 *** `make-local-hook' (not needed)
3665 *** `set-screen-height' (`set-frame-height')
3666 *** `set-screen-width' (`set-frame-width')
3668 ** The following obsolete variables and varaliases have been removed
3669 (the appropriate new variable is given in parentheses):
3671 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3672 *** `vc-header-alist' (`vc-BACKEND-header')
3673 *** `directory-sep-char' (== ?/)
3674 *** `font-lock-defaults-alist' (`font-lock-defaults')
3675 *** `e' (`float-e').
3677 ** The following obsolete files were removed:
3678 sc.el, x-menu.el, rnews.el, rnewspost.el
3680 ** The format of the finder-inf.el file has changed, since the Finder
3681 mechanism is now based on the package system. The variable
3682 `finder-package-info' is replaced by `package--builtins' and
3683 `finder-keywords-hash'.
3685 ** When generating autoloads, `update-directory-autoloads' no longer
3686 assumes every inspected file is in your `load-path'. It instead
3687 generates relative names according to the current `load-path'.
3690 * Lisp Changes in Emacs 24.1
3692 ** Code can now use lexical scoping by default instead of dynamic scoping.
3693 The `lexical-binding' variable enables lexical scoping for local
3694 variables. It is typically set via a file-local variable in the first
3695 line of the file, in which case it applies to all the code in that
3698 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3699 binding instead of the old dynamic binding mode.
3701 *** Lexically scoped interpreted functions are represented with a new form
3702 of function value which looks like (closure ENV ARGS &rest BODY).
3704 *** New macro `letrec' to define recursive local functions.
3706 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3707 So do `defcustom' and other forms that call `defvar' as a subroutine.
3709 *** New function `special-variable-p' to check whether a variable is
3710 declared as dynamically bound.
3712 *** The form ((lambda ...) ...) is deprecated.
3714 ** An Emacs Lisp testing tool is now included.
3715 Emacs Lisp developers can use this tool to write automated tests for
3716 their code. See the ERT info manual for details.
3718 ** Changes for bidirectional display and editing
3720 *** New function `current-bidi-paragraph-direction'.
3721 This returns the base direction of the paragraph at point.
3723 *** New function `bidi-string-mark-left-to-right'.
3724 Given a string containing characters from right-to-left scripts, this
3725 function returns another string which can be safely inserted into a
3726 buffer, such that any following text will be always displayed to the
3727 right of that string. (This works by appending an invisible Unicode
3728 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3730 This is useful when the buffer has overall left-to-right paragraph
3731 direction and you need to insert a string whose contents are not known
3732 in advance, without disrupting the layout of the line.
3736 *** Window tree functions are accessible in Elisp.
3737 Functions are provided to return the parent, siblings or child windows
3738 of any window including internal windows (windows not associated with a
3739 buffer) in the window tree.
3741 **** New function `window-valid-p' gives non-nil for live and internal
3744 **** Window manipulation can deal with internal windows.
3745 Many window handling functions like `split-window', `delete-window', or
3746 `delete-other-windows' as well as the window resizing functions can now
3747 act on any window including internal ones.
3749 *** window-total-height/-width vs window-body-height/-width.
3750 The function `window-height' has been renamed to `window-total-height'
3751 and `window-width' has been renamed to `window-body-width'. The old
3752 names are provided as aliases. Two new functions `window-total-width'
3753 and `window-body-height' are provided.
3755 *** Window parameters specific to window handling functions.
3756 For each window you can specify a parameter to override the default
3757 behavior of a number of functions like `split-window', `delete-window'
3758 and `delete-other-windows'. The variable `ignore-window-parameters'
3759 allows to ignore processing such parameters.
3761 *** New semantics of third argument of `split-window'.
3762 The third argument of `split-window' has been renamed to SIDE and can be
3763 set to any of the values 'below, 'right, 'above, or 'left to make the
3764 new window appear on the corresponding side of the window that shall be
3765 split. Any other value of SIDE will cause `split-window' to split the
3766 window into two side-by-side windows as before.
3768 *** Window resizing functions.
3769 A new standard function for resizing windows called `window-resize' has
3770 been introduced. This and all other functions for resizing windows no
3771 longer delete any windows when they become too small.
3773 *** Deleting the selected window now selects the most recently selected
3774 live window on that frame instead.
3776 *** `adjust-window-trailing-edge' adjustments.
3777 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3778 is able to resize other windows if a window adjacent to the trailing
3779 edge cannot be shrunk any more. This makes its behavior more similar to
3780 that of Emacs 21 without compromising, however, its inability to delete
3781 windows which was introduced in Emacs 22.
3783 *** Window-local buffer lists.
3784 Windows now have local buffer lists. This means that removing a buffer
3785 from display in a window will preferably show the buffer previously
3786 shown in that window with its previous window-start and window-point
3787 positions. This also means that the same buffer may be automatically
3788 shown twice even if it already appears in another window.
3790 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3791 which if non-nil requires the buffer to be displayed in the currently
3792 selected window, signaling an error otherwise. If nil, another window
3793 can be used, e.g. if the selected one is strongly dedicated.
3795 *** `split-window-vertically' and `split-window-horizontally' renamed
3796 to `split-window-below' and `split-window-right' respectively.
3797 The old names are kept as aliases.
3801 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3802 named ACTION, and takes a display action of the same form as
3803 `display-buffer-base-action' (see Changes, above). A non-nil,
3804 non-list value is treated specially, as the old meaning.
3806 **** New variable `display-buffer-overriding-action'.
3808 **** The procedure of `display-buffer' etc. to choose a window is
3809 determined by combining `display-buffer-overriding-action',
3810 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3811 and `display-buffer-fallback-action'. The second and fourth of these
3812 are user-customizable variables.
3814 See the docstring of `display-buffer' for details.
3816 *** New functions `window-state-get' and `window-state-put'.
3817 These functions allow to save and restore the state of an arbitrary
3818 frame or window as an Elisp object.
3822 *** New variable `completion-extra-properties' used to specify extra
3823 properties of the current completion:
3824 - :annotate-function, same as the old completion-annotate-function.
3825 - :exit-function, function to call after completion took place.
3827 *** Functions on `completion-at-point-functions' can return any of the
3828 properties valid for `completion-extra-properties'.
3830 *** `completion-annotate-function' is obsolete.
3832 *** New `metadata' method for completion tables. The metadata thus returned
3833 can specify various details of the data returned by `all-completions':
3834 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3835 used to select a style in completion-category-overrides.
3836 - `annotation-function' to add annotations in *Completions*.
3837 - `display-sort-function' to specify how to sort entries in *Completions*.
3838 - `cycle-sort-function' to specify how to sort entries when cycling.
3840 *** `minibuffer-local-filename-must-match-map' is not used any more.
3841 Instead, the bindings in `minibuffer-local-filename-completion-map'
3842 are combined with `minibuffer-local-must-match-map'.
3844 *** New variable `completing-read-function' allows overriding the
3845 behavior of `completing-read'.
3847 ** `glyphless-char-display' can now distinguish between graphical and
3848 text terminal display, via a char-table entry that is a cons cell.
3850 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3851 Instead, the offending function is removed.
3855 *** New function `run-hook-wrapped' for running an abnormal hook by
3856 passing the hook functions as arguments to a "wrapping" function.
3857 Like `run-hook-with-args-until-success', it stops at the first
3858 non-nil return value.
3860 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3861 set of "wrapping" filters, similar to around advice.
3862 (A version of this macro was actually added in Emacs 23.2 but was not
3863 advertised at the time.)
3867 *** New macro `condition-case-unless-debug' (this was actually added in
3868 Emacs 23.1 as condition-case-no-debug, but not advertised)
3870 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3872 *** Variable `stack-trace-on-error' removed.
3874 *** The debugger can now "continue" from an error, which means it will
3875 jump to the error handler as if the debugger had not been invoked
3876 instead of jumping all the way to the top-level.
3878 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3879 This can be useful when `inhibit-quit' is set.
3881 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3882 named Emacs server instances.
3884 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3885 to redirect STDOUT to a file.
3887 ** The function `format-time-string' now supports the %N directive,
3888 for higher-resolution time stamps.
3890 ** New input reading functions
3892 *** New function `read-char-choice' reads a restricted set of
3893 characters, discarding any inputs not inside the set.
3895 *** The command `read-color' now requires a match for a color name
3896 or RGB triplet, instead of signaling an error if the user provides
3899 **** `facemenu-read-color' is now an alias for `read-color'.
3901 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3902 The variable is now used to load all kind of supported dynamic libraries,
3903 not just image libraries. The previous name is still available as an
3906 ** Syntax parsing changes
3908 *** New variable `syntax-propertize-function'.
3909 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3910 This allows syntax-table properties to be set independently from font-lock:
3911 just call syntax-propertize to make sure the text is propertized.
3912 Together with this new variable come a new hook
3913 syntax-propertize-extend-region-functions, as well as two helper functions:
3914 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3915 as-is; and syntax-propertize-rules which provides a new way to specify
3918 *** Syntax tables support a new "comment style c" additionally to style b.
3920 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3922 ** frame-local variables cannot be let-bound any more.
3924 ** Major and minor mode changes
3926 *** `set-auto-mode' now respects mode: local variables at the end of files,
3927 as well as those in the -*- line.
3929 *** `prog-mode' is a new major mode from which programming modes
3932 **** `prog-mode-hook' can be used to enable features for programming
3933 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3934 on-the-fly spell checking for comments and strings.
3936 *** New hook `change-major-mode-after-body-hook', run by
3937 `run-mode-hooks' just before any other mode hooks.
3939 *** Enabled globalized minor modes can be disabled in specific major modes.
3940 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3941 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3943 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3945 ** File-handling changes
3947 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3948 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3949 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3950 argument is supplied (see Trash changes, above).
3952 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3954 ** Tool-bars can display separators.
3955 Tool-bar separators are handled like menu separators in menu-bar maps,
3956 i.e. via menu entries of the form `(menu-item "--")'.
3960 *** Animated images support (currently animated gifs only).
3962 **** `image-animated-p' returns non-nil if an image can be animated.
3964 **** `image-animate' animates a supplied image spec.
3966 **** `image-animate-timer' returns the timer object for an image that
3969 *** `image-extension-data' has been renamed to `image-metadata'.
3970 The old name is an obsolete alias to the new one.
3972 *** Image mode can view any image type that ImageMagick supports.
3973 This requires Emacs to be built with ImageMagick support.
3975 **** New function `imagemagick-types', defined if ImageMagick support
3976 is enabled, returns a list of image file extensions that your
3977 ImageMagick installation supports.
3979 **** New function `imagemagick-register-types' enables ImageMagick
3980 image types in Image mode and in `create-image' and other helper
3983 **** New option `imagemagick-types-inhibit' excludes certain
3984 ImageMagick image types from `imagemagick-register-types'.
3986 **** With ImageMagick support, there are extra Image mode commands to
3987 resize and rotate images: `image-transform-fit-to-height',
3988 `image-transform-fit-to-width', `image-transform-set-rotation', and
3989 `image-transform-set-scale'.
3991 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3992 passes it to the mail user agent function. This argument specifies an
3993 action for returning to the caller after finishing with the mail. For
3994 example, this is used by Rmail to optionally delete a mail window.
3996 ** XML and HTML parsing
3997 If Emacs is compiled with libxml2 support, there are two new
3998 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3999 and `libxml-parse-xml-region' (which parses XML). Both return an
4000 Emacs Lisp parse tree.
4002 ** Networking and encryption changes
4004 *** `open-network-stream' can now be used to open an encrypted stream.
4005 It now accepts an optional `:type' parameter for initiating a TLS
4006 connection, directly or via STARTTLS. To do STARTTLS, additional
4007 parameters (`:end-of-command', `:success', `:capabilities-command')
4008 must also be supplied.
4010 *** New library gnutls.el.
4011 The new function `gnutls-available-p' returns non-nil if Emacs is
4012 built with GnuTLS support. The main entry points are
4013 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
4014 these functions through `open-network-stream', because that can
4015 upgrade connections through STARTTLS opportunistically or use plain
4016 SSL, depending on your needs. For debugging, set `gnutls-log-level'
4019 *** New primitive `secure-hash' that supports many secure hash algorithms:
4020 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
4021 sha1.el has been removed. The `sha1' feature is provided by default.
4025 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
4027 ** Progress reporters can now "spin".
4028 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
4029 now be nil, or omitted. This makes a "non-numeric" reporter. Each
4030 time you call `progress-reporter-update' on that progress reporter,
4031 with a nil or omitted VALUE argument, the reporter message is
4032 displayed with a "spinning bar".
4034 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
4035 being reverted, even if the buffer has a local `revert-buffer-function'.
4037 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
4038 If delayed-warnings-list is non-nil, the command loop calls
4039 `delayed-warnings-hook' after `post-command-hook'. At present, this
4040 is only used by Emacs on some platforms to display warnings during
4041 startup, which might otherwise not be noticed. This uses the
4042 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
4044 ** rx.el has a new `group-n' construct for explicitly numbered groups.
4046 ** New function `make-composed-keymap' that constructs a new keymap
4047 from multiple input maps. You can use this to make a keymap that
4048 inherits from multiple maps, eg:
4049 (set-keymap-parent newmap (make-composed-keymap othermap parent))
4051 ** New function `string-prefix-p'.
4052 (This was actually added in Emacs 23.2 but was not advertised at the time.)
4054 ** New reader macro ## that stands for the empty symbol.
4055 This means that the empty symbol can now be read back. Also, #: by itself
4056 (when not immediately followed by a possible symbol character) stands for
4057 an empty uninterned symbol.
4059 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
4061 ** The following functions and variables are obsolete:
4063 *** `tooltip-use-echo-area' is obsolete.
4064 Rather than setting this to t, disable Tooltip mode instead.
4066 *** buffer-substring-filters is obsolete.
4067 Use `filter-buffer-substring-functions' instead.
4069 *** `byte-compile-disable-print-circle' is obsolete.
4071 *** `deferred-action-list' and `deferred-action-function' are obsolete.
4072 Use `post-command-hook' instead.
4074 *** `font-lock-maximum-size' is obsolete.
4077 * Changes in Emacs 24.1 on Non-Free Operating Systems
4079 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
4080 and also when HOME is set to C:\ by default.
4082 ** New configure.bat options
4084 *** --enable-checking builds Emacs with extra runtime checks.
4086 *** --distfiles specifies files to be included in binary distribution.
4088 *** --without-gnutls disables automatic GnuTLS detection.
4090 *** --lib for general library linkage, works with the USER_LIBS build variable.
4092 ** New make target `dist' to create binary distribution for MS Windows.
4094 ** The Lisp function `w32-default-color-map' is now obsolete.
4095 (It is only used internally in the Emacs C code.)
4097 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
4098 reappear on mouse-over. (Requires OS X 10.6 or later.)
4100 ** On Mac OS X, dragging a file into Emacs visits the file, like on
4101 other platforms, rather than inserting its contents into the buffer.
4104 ----------------------------------------------------------------------
4105 This file is part of GNU Emacs.
4107 GNU Emacs is free software: you can redistribute it and/or modify
4108 it under the terms of the GNU General Public License as published by
4109 the Free Software Foundation, either version 3 of the License, or
4110 (at your option) any later version.
4112 GNU Emacs is distributed in the hope that it will be useful,
4113 but WITHOUT ANY WARRANTY; without even the implied warranty of
4114 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4115 GNU General Public License for more details.
4117 You should have received a copy of the GNU General Public License
4118 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
4123 paragraph-separate: "[
\f]*$"