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 24.4
27 ** Emacs can now be compiled with ACL support.
28 This happens by default if a suitable support library is found at
29 build time, like libacl on GNU/Linux. To prevent this, use the
30 configure option `--disable-acl'.
32 ** Emacs can now be compiled with file notification support.
33 This happens by default if a suitable system library is found at
34 build time. To prevent this, use the configure option
35 `--with-file-notification-no'. See below for file-notify features.
36 FIXME? This feature is not available for the Nextstep port. (?)
39 ** The configure option `--without-compress-info' has been generalized,
40 and renamed to `--without-compress-install'. It now prevents compression
41 of _any_ files during installation.
44 ** The configure option `--with-crt-dir' has been removed.
45 It is no longer needed, as the crt*.o files are no longer linked
49 ** Directories passed to configure option `--enable-locallisppath' are
50 no longer created during installation.
52 ** Emacs can be compiled with zlib support.
53 If this library is present (which it normally is on most systems), the
54 function `zlib-decompress-region' becomes available, which can
55 decompress gzip- and zlib-format compressed data.
58 ** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
59 This requires pkg-config to be available at configure time.
62 * Startup Changes in Emacs 24.4
65 ** When initializing `load-path', an empty element in the EMACSLOADPATH
66 environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
67 "/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
68 load-path (the one that would have been used if EMACSLOADPATH was unset).
69 This makes it easier to _extend_ the load-path via EMACSLOADPATH
70 (previously, EMACSLOADPATH had to specify the complete load-path,
71 including the defaults). (In older versions of Emacs, an empty element
72 was replaced by ".", so use an explicit "." now if that is what you want.)
75 ** The -L option, which normally prepends its argument to load-path,
76 will instead append, if the argument begins with `:' (or `;' on MS Windows;
77 i.e., `path-separator').
80 ** If you use either site-load.el or site-init.el to customize the dumped
81 Emacs executable, any changes to `load-path' that these files make
82 will no longer be present after dumping. To affect a permanent change
83 to `load-path', use the `--enable-locallisppath' option of `configure'.
86 ** The user option `initial-buffer-choice' can now specify a function
87 to set up the initial buffer.
90 * Changes in Emacs 24.4
93 ** New option `gnutls-verify-error', if non-nil, means that Emacs
94 should reject SSL/TLS certificates that GnuTLS determines as invalid.
95 (This option defaults to nil at present, but this is expected to change
99 ** Emacs now supports menus on text-mode terminals.
100 If the terminal supports a mouse, clicking on the menu bar, or on
101 sensitive portions of the mode line or header line, will drop down the
102 menu defined at that position. Likewise, clicking C-mouse-2 or
103 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
106 If the text terminal does not support a mouse, you can activate the
107 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
109 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
110 customize the option `tty-menu-open-use-tmm' to a non-nil value.
111 (Typing M-` will always invoke `tmm-menubar', even if
112 `tty-menu-open-use-tmm' is nil.)
115 ** The *Messages* buffer is created in `messages-buffer-mode',
116 a new major mode, with read-only status. Any code that might create
117 the *Messages* buffer should call the function `messages-buffer' to do
118 so and set up the mode.
120 ** Emacs now supports ACLs (access control lists).
122 *** Emacs preserves the ACL entries of files when backing up.
124 *** New functions `file-acl' and `set-file-acl' get and set the ACL
125 entries of a file. On GNU/Linux, the POSIX ACL interface is used via
126 libacl. On MS-Windows, the NT Security APIs are used to emulate the
127 POSIX ACL interfaces.
129 ** Multi-monitor support has been added.
131 *** New functions `display-monitor-attributes-list' and
132 `frame-monitor-attributes' can be used to obtain information about
133 each physical monitor on multi-monitor setups.
135 *** The functions `display-pixel-width' and `display-pixel-height' now
136 behave consistently among the platforms: they return the pixel width
137 or height for all physical monitors associated with the given display
138 as just they were on X11. To get information for each physical
139 monitor, use the new functions above. Similar notes also apply to
140 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
141 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
144 ** The cursor stops blinking after 10 blinks (by default) on X and NS.
145 You can change the default by customizing `blink-cursor-blinks'.
148 ** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
149 This affects View mode, etc.
154 *** The command `apropos-variable' is renamed to `apropos-user-option'.
155 `apropos-user-option' shows all user options while `apropos-variable'
156 shows all variables. When called with a universal prefix argument,
157 the two commands swap their behaviors. When `apropos-do-all' is
158 non-nil, they output the same results.
161 *** The key `?' now describes prefix bindings, like `C-h'.
163 *** The command `describe-function' has been extended for EIEIO.
164 Running it on constructors will show a full description of the
165 generated class. For generic functions, it will show all
166 implementations together with links to the source. The old commands
167 `describe-class', `describe-constructor' and `describe-generic' were
171 *** The function `quail-help' is no longer an interactive command.
172 Use `C-h C-\' (`describe-input-method') instead.
177 *** ImageMagick images now support the :max-width and :max-height keywords.
180 *** When using `create-image' with image data, you can pass a :format
181 attribute (via the property-list argument) in order to help
182 ImageMagick detect the image type. The value should be a MIME
183 content-type that is found in the new variable `image-format-suffixes'.
185 ** Frame and window changes
188 *** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
189 bound to <f11> and M-<f10>, respectively.
191 *** New command `frameset-to-register' is now bound to `C-x r f', replacing
192 `frame-configuration-to-register'. It offers similar functionality,
193 plus enhancements like the ability to restore deleted frames. The
194 command `frame-configuration-to-register' still exists, but is unbound.
197 *** New hooks `focus-in-hook', `focus-out-hook'.
198 These are normal hooks run when an Emacs frame gains or loses input focus.
201 *** `split-window' is now a non-interactive function, not a command.
202 As a command, it was a special case of `C-x 2' (`split-window-below'),
203 and as such superfluous. After being reimplemented in Lisp, its
204 interactive form was mistakenly retained.
207 *** New option `scroll-bar-adjust-thumb-portion'.
208 Available only on X, this option allows to control over-scrolling
209 using the scroll bar (i.e. dragging the thumb down even when the end
210 of the buffer is visible).
212 ** Lisp evaluation changes
214 *** `eval-defun' on an already defined defcustom calls the :set function,
217 *** The commands `eval-expression' (`M-:'), `eval-last-sexp' (`C-x C-e'),
218 and `eval-print-last-sexp' (`C-j') can take a zero prefix argument.
219 This disables truncation of lists in the output, equivalent to
220 setting `(eval-expression-)print-length' and `(eval-expression-)print-limit'
221 to nil. Additionally, it causes integers to be printed in multiple
222 formats (octal, hexadecimal, and character).
225 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
228 ** `cache-long-line-scans' has been renamed to `cache-long-scans'
229 because it affects caching of paragraph scanning results as well.
230 Also, it is now enabled by default.
233 ** The option `set-mark-default-inactive' has been deleted.
234 This unfinished feature was introduced by accident in Emacs 23.1;
235 simply disabling Transient Mark mode does the same thing.
237 ** The default value of `comment-use-global-state' is now t,
238 and this variable has been marked obsolete.
241 ** `emacs-bzr-version' has been renamed to `emacs-repository-version',
242 and works for git too, if you fetch the repository notes.
246 *** `read-regexp-defaults-function' defines a function to read regexps,
247 used by commands like `rgrep', `lgrep' `occur', `highlight-regexp', etc.
248 You can customize this to specify a function that provides a default
249 value from the regexp last history element, or from the symbol found
253 *** `load-prefer-newer', affects how the `load' function chooses the
254 file to load. If this is non-nil, then when both .el and .elc
255 versions of a file exist, and the caller did not explicitly specify
256 which one to load, then the newer file is loaded. The default, nil,
257 means to always load the .elc file.
260 * Editing Changes in Emacs 24.4
262 ** Indentation changes
265 *** The behavior of `C-x TAB' (`indent-rigidly') has changed.
266 When invoked without a prefix argument, it now activates a transient
267 mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
268 the text indentation in the region. Typing any other key resumes
269 normal editing behavior.
271 *** `electric-indent-mode' is enabled by default.
273 *** `tab-stop-list' is now implicitly extended to infinity by repeating
274 the last step. Its default value is changed to nil, which means a tab
275 stop every `tab-width' columns.
279 *** New command `cycle-spacing' cycles between spacing conventions:
280 having just one space, no spaces, or reverting to the original
281 spacing. Like `just-one-space', it can handle or ignore newlines and
282 leave different number of spaces.
284 *** `fill-single-char-nobreak-p' prevents fill from breaking a line after
285 a 1-letter word, which is an error according to Polish and
286 Czech typography rules. To globally enable this feature, evaluate:
288 (add-hook 'fill-nobreak-predicate 'fill-single-char-nobreak-p)
291 ** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
293 ** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
294 Most commands are still unaware of it, but kill/yank do work on the rectangle.
297 ** New option `visual-order-cursor-movement'.
298 If this is non-nil, cursor motion with arrow keys will follow the
299 visual order of characters on the screen: <left> always moves to the
300 left, <right> always moves to the right, disregarding the surrounding
301 bidirectional context.
305 *** All register commands can now show help with preview.
308 *** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
311 *** New command `C-x r f' (`frameset-to-register').
312 See Changes in Emacs 24.4, above.
314 ** New command `delete-duplicate-lines'.
315 When its arg ADJACENT is non-nil (when called interactively with C-u
316 C-u) it works like the utility `uniq'. Otherwise by default it
317 deletes duplicate lines everywhere in the region without regard to
318 adjacency. When its arg KEEP-BLANKS is non-nil (when called
319 interactively with C-u C-u C-u), duplicate blank lines are preserved.
322 * Changes in Specialized Modes and Packages in Emacs 24.4
324 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
326 ~/.emacs.d/timelog replaces ~/.timelog
327 ~/.emacs.d/vip replaces ~/.vip
328 ~/.emacs.d/viper replaces ~/.viper
329 ~/.emacs.d/ido.last replaces ~/.ido.last
330 ~/.emacs.d/kkcrc replaces ~/.kkcrc
331 ~/.emacs.d/quickurls replaces ~/.quickurls
332 ~/.emacs.d/idlwave replaces ~/.idlwave
333 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
334 ~/.emacs.d/places replaces ~/.emacs-places
335 ~/.emacs.d/shadows replaces ~/.shadows
336 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
337 ~/.emacs.d/strokes replaces ~/.strokes
338 ~/.emacs.d/notes replaces ~/.notes
339 ~/.emacs.d/type-break replaces ~/.type-break
340 Also the following files used by the now obsolete otodo-mode.el:
341 ~/.emacs.d/todo-do replaces ~/.todo-do
342 ~/.emacs.d/todo-done replaces ~/.todo-done
343 ~/.emacs.d/todo-top replaces ~/.todo-top
345 ** Backtrace and debugger
347 *** The Lisp debugger's `e' command now includes the lexical environment
348 when evaluating the code in the context at point. Hence, it now lets
349 you access lexical variables.
352 *** New command `v' (`debugger-toggle-locals') displays local vars.
354 *** New minor mode `jit-lock-debug-mode' lets you use the debuggers on
355 code run via JIT Lock.
360 *** Battery information via the BSD `apm' utility is now supported.
364 *** `M-s a C-o' shows lines matching a regexp in marked buffers using Occur.
366 ** Calendar and Diary
369 *** New faces `calendar-weekday-header', `calendar-weekend-header',
370 and `calendar-month-header'.
373 *** New option `calendar-day-header-array'.
376 *** New variable `diary-from-outlook-function', used by the command
377 `diary-from-outlook'.
380 *** The variable `calendar-font-lock-keywords' is obsolete.
384 *** Calc by default now uses the Gregorian calendar for all dates, and
385 uses January 1, 1 AD as its day number 1. Previously Calc used the
386 Julian calendar for dates before September 14, 1752, and it used
387 December 31, 1 BC as its day number 1; the new scheme is more
388 consistent with Calendar's calendrical system and day numbering.
390 *** The new variable `calc-gregorian-switch' lets you configure the
391 date when Calc switches from the Julian to the Gregorian calendar.
392 Nil, the default value, means to always use the Gregorian calendar.
393 The value (YEAR MONTH DAY) means to start using the Gregorian calendar
396 *** Support for ISO 8601 dates.
402 **** The cpp-root project now supports executing a compile command.
403 It can be set through the new :compile-command slot or the
404 buffer-local variable `compile-command'.
406 **** Better selection of include directories for the 'linux' project.
407 Include directories now support out-of-tree build directories and
408 target architecture auto-detection.
412 **** Improved detection of used namespaces in current scope in C++.
414 **** Parsing of default values for variables and function arguments in C/C++.
415 They are also displayed by the summarize feature in the modeline.
417 **** Improved parsing of function pointers in C/C++.
418 This also includes parsing of function pointers as function arguments.
420 **** Parsing of C/C++ preprocessor macros which open new scope.
421 For example, this enables parsing of macros which open new namespaces.
423 **** Support for 'this' pointer in inline member functions in C++.
427 *** New macro `cl-tagbody'.
430 *** letf is now just an alias for cl-letf.
434 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
435 Hence, you can now enable it independently from `transient-mark-mode',
436 `delete-selection-mode', and `shift-select-mode'.
438 *** `cua-highlight-region-shift-only' is now obsolete.
439 You can disable `transient-mark-mode' to get the same result.
441 *** CUA's rectangles can now be used via `cua-rectangle-mark-mode'.
445 *** Support for completion, ElDoc, and Flycheck has been added.
447 *** The current CFEngine syntax is parsed from "cf-promises -s json".
448 There is a fallback syntax available if you don't have cf-promises or
449 if it doesn't support that option.
451 ** Delete Selection mode can now be used without `transient-mark-mode'.
455 *** `desktop-auto-save-timeout' defines the number of seconds idle time
456 before auto-save of the desktop.
458 *** `desktop-restore-frames', enabled by default, allows saving and
459 restoring the frame/window configuration (frameset). Additional options
460 `desktop-restore-in-current-display', `desktop-restore-reuses-frames'
461 and `desktop-restore-forces-onscreen' offer further customization.
466 *** New minor mode `dired-hide-details-mode' hides details.
468 ** Eldoc Mode works properly in the minibuffer.
470 ** Electric Pair mode
472 *** New option `electric-pair-preserve-balance', enabled by default.
473 If non-nil, pairing/skipping only kicks in when that help the balance
474 of parentheses and quotes, i.e. the buffer should end up at least as
477 You can further control this behavior by adjusting the predicates
478 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
480 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
481 In `electric-pair-mode', the commands `backward-delete-char' and
482 `backward-delete-char-untabify' are now bound to electric variants
483 that delete the closer when invoked between adjacent pairs.
485 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
486 In `electric-pair-mode', inserting a newline between adjacent pairs
487 opens an extra newline after point, which is indented if
488 `electric-indent-mode' is also set.
490 *** New option `electric-pair-skip-whitespace', enabled by default.
491 This controls if skipping over closing delimiters should jump over any
492 whitespace slack. Setting it to `chomp' makes it delete this
493 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
495 *** New variables control the pairing in strings and comments.
496 You can customize `electric-pair-text-pairs' and
497 `electric-pair-text-syntax-table' to tweak pairing behavior inside
498 strings and comments.
502 *** New option `epa-mail-aliases'.
503 You can set this to a list of alias expansions for keys to use
504 in `epa-mail-encrypt'.
506 If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
507 that means: when one of the recipients of the message being encrypted
508 is `foo@bar.com', encrypt the message for `foo@hello.org' instead.
510 If one element of the variable's value is ("foo@bar.com"),
511 that means: when one of the recipients of the message being encrypted
512 is `foo@bar.com', ignore that name as regards encryption.
513 This is useful to avoid a query when you have no key for that name.
517 *** New option `erc-accidental-paste-threshold-seconds'.
518 If set to a number, this can be used to avoid accidentally pasting large
519 amounts of data into the ERC input.
522 ** New ERT macro `skip-unless' allows skipping ERT tests.
523 See the ERT manual for details.
528 *** `eshell' now supports visual subcommands and options.
529 Eshell has been able to handle "visual" commands (interactive,
530 non-line oriented commands such as top that require display
531 capabilities not provided by eshell) by running them in an Emacs
532 terminal emulator. See `eshell-visual-commands'.
534 This feature has been extended to subcommands and options that make a
535 usually line-oriented command a visual command. Typical examples are
536 "git log" and "git <command> --help", which display their output in a
537 pager by default. See `eshell-visual-subcommands' and
538 `eshell-visual-options'.
541 *** New Eshell-Tramp module.
542 External su and sudo commands are now the default; the internal,
543 Tramp-using variants can still be used by enabling the eshell-tramp
548 *** New option `f90-smart-end-names'.
550 ** Icomplete is a bit more like Ido.
552 *** Key bindings to navigate through and select the completions.
554 *** The icomplete-separator is customizable, and its default has changed.
556 *** Removed `icomplete-show-key-bindings'.
558 *** Icomplete-mode by defaults applies to all forms of minibuffer completion.
559 (setq icomplete-with-completion-tables '(internal-complete-buffer))
560 will revert to the old behavior.
564 *** Ido has a manual now.
566 *** `ido-use-virtual-buffers' takes a new value 'auto.
568 *** `ido-decorations' has been slightly extended to give a bit more control.
573 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
574 visit the next image file and the previous image file in the same
575 directory, respectively.
578 *** New commands to show specific frames of multi-frame images.
579 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
580 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
583 *** New commands to speed up, slow down, or reverse animation.
584 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
585 speed up and slow down the animation. `a r' (`image-reverse-speed')
586 to reverse it and `a 0' (`image-reset-speed') to reset it.
589 *** The command `image-mode-fit-frame' deletes other windows.
590 When toggling, it restores the frame's previous window configuration.
591 It also has an optional frame argument, which can be used by Lisp
592 callers to fit the image to a frame other than the selected frame.
596 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
597 will cycle through faces in `hi-lock-face-defaults' without prompting.
600 *** New global command `M-s h .' (`highlight-symbol-at-point')
601 highlights the symbol found near point without prompting,
602 using the next face automatically.
604 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
607 ** New Info face `info-index-match', used to highlight matches in index
608 entries displayed by `Info-index-next', `Info-virtual-index' and
613 *** Better indentation of multiple-variable declarations.
614 If declaration spans several lines, variables on the following lines
615 are lined up to the first one.
617 *** We now recognize and better indent continuations in array
620 *** New option `js-switch-indent-offset`.
622 ** MH-E has been updated to MH-E version 8.5.
623 See MH-E-NEWS for details.
628 *** Font locking for texinfo comments and new keywords.
630 *** Completion in Octave file buffers.
634 *** Jump to definition.
636 *** Documentation lookup/search.
638 ** OPascal mode is the new name for Delphi mode.
640 *** All delphi-* variables and functions have been renamed to opascal-*.
642 *** `delphi-newline-always-indents' is not supported any more.
643 Use `electric-indent-mode' instead.
645 *** `delphi-tab' is gone, replaced by `indent-for-tab-command'.
649 *** The format of `archive-contents' files, generated by package
650 repositories, has changed to allow a new (fifth) element in the data
651 vectors, containing an associative list with extra properties.
653 *** `describe-package' buffer uses the `:url' extra property to
654 display a `Homepage' header, if it's present.
656 *** In the buffer produced by `describe-package', there are now buttons
657 listing the keywords related to that package. You can click on them
658 to see other packages related to any given keyword.
660 *** In the *Packages* buffer, `f' or the Package->Filter menu filters
661 the packages by a keyword.
664 ** In Prolog mode, `prolog-use-smie' has been removed,
665 along with the non-SMIE indentation code.
669 *** The new command `remember-notes' creates a buffer that is saved on
670 `kill-emacs'. You can think of it as a *scratch* buffer whose content
671 is preserved. In fact, it was designed as a replacement for *scratch*
672 buffer and can be used that way by setting `initial-buffer-choice' to
673 `remember-notes' and `remember-notes-buffer-name' to "*scratch*".
674 Without the second change, the *scratch* buffer will still be there
675 for notes that do not need to be preserved.
677 *** The Remember package can now store notes in separates files.
678 You can use the new function `remember-store-in-files' within the
679 `remember-handler-functions' option. See `remember-data-directory'
680 and `remember-directory-file-name-format' for new options related to
685 *** Customize `rmail-mbox-format' to influence some minor aspects of
686 how Rmail displays non-MIME messages.
689 *** The `unrmail' command now converts from BABYL to mboxrd format,
690 rather than mboxo. Customize `unrmail-mbox-format' to change this.
694 *** New option `ruby-encoding-magic-comment-style'.
696 *** New option `ruby-custom-encoding-magic-comment-template'.
698 *** Improved syntax highlighting and indentation.
700 *** More Ruby file types have been added to `auto-mode-alist'.
702 *** New option `ruby-align-to-stmt-keywords'.
704 *** New `electric-indent-mode' integration.
706 ** Search and Replace
709 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
710 starts a symbol (identifier) incremental search forward with the
711 symbol found near point added to the search string initially.
714 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
715 and adds it to the search string.
717 *** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
718 between nil and the value of the option `search-invisible' (or `open'
721 *** `query-replace' skips invisible text when `search-invisible' is nil,
722 and opens overlays with hidden text when `search-invisible' is `open'.
725 *** A negative prefix arg of replacement commands replaces backward.
726 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
727 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
730 *** By default, prefix arguments do not now terminate Isearch mode.
731 Set `isearch-allow-prefix' to nil to restore old behavior.
734 *** More Isearch commands accept prefix arguments, namely
735 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
739 *** Word search now matches whitespace at the beginning/end
740 of the search string if it contains leading/trailing whitespace.
741 In an incremental word search or when using a non-nil LAX argument
742 of `word-search-regexp', the lax matching can also match part of
743 the first word (in addition to the lax matching of the last word).
744 The same rules are now applied to the symbol search with the difference
745 that it matches symbols, and non-symbol characters between symbols.
748 ** New SES command `ses-rename-cell' allows assigning names to SES cells.
751 ** The shell.el option `explicit-bash-args' includes --noediting by default.
752 All non-ancient Bash versions support this option.
756 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
758 *** The SMIE indentation engine is now used by default.
760 ** SMIE indentation can be customized via `smie-config'.
761 Emacs can learn the appropriate indentation settings if you provide it
762 with an indented sample file.
764 ** New Term mode option `term-suppress-hard-newline'.
766 ** Todo mode has been rewritten and enhanced.
767 New features include:
768 *** Support for multiple todo files and archive files of done items
769 *** Renaming, reordering, moving, merging, and deleting categories
770 *** Sortable tabular summaries of categories and the types of items they contain
771 *** Cross-category lists of items filtered by specific criteria
772 *** More fine-grained interaction with the Emacs diary, by being able to decide
773 for each todo item whether it appears in the Fancy Diary display
774 *** Highly flexible new item insertion and item editing
775 *** Moving items between categories, storing done items in their category or in
776 archive files, undoing or unarchiving done items
777 *** Reprioritizing items by inputting a numerical priority
778 *** Extensive customizability of operation and display, including numerous faces
780 The Todo mode user manual describes all commands and most user
781 options. To support some of these features, a new file format is
782 used, which is incompatible with the old format; however, you can
783 convert old todo and done item files to the new format on initializing
784 the first new todo file, or at any later time with the provided
785 conversion command. The previous version of todo-mode.el has been
786 renamed to otodo-mode.el and is now obsolete.
790 *** No prompting for the destination buffer, unless a prefix argument is used.
792 *** With a prefix argument, you can enter a "context"; i.e., a Lisp
793 expression whose value at the time the function is entered/exited will
794 be printed along with the function name and arguments. For example,
795 you can use this to trace the value of current-buffer or point.
799 *** The experimental url syntax for remote file names has been removed.
802 *** New connection method "adb", which allows to access Android
803 devices by the Android Debug Bridge. The variable `tramp-adb-program'
804 can be used to adapt the path of the "adb" program, if needed.
806 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
807 "scpc" and "rsyncc" are discontinued. The ssh option
808 "ControlMaster=auto" is set automatically in all ssh-based methods,
812 *** Handlers for `file-acl' and `set-file-acl' for remote machines
813 which support POSIX ACLs.
816 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
817 for remote machines which support filesystem notifications.
819 ** New command `url-cookie-list' displays all the current cookies, and
820 allows deleting selected cookies.
822 ** VC and related modes
825 *** In VC directory mode, `D' displays diffs between VC-controlled
826 whole tree revisions.
829 *** In VC directory mode, `L' lists the change log for the current VC
830 controlled tree in a window.
833 *** In VC directory mode, `I' shows a log of changes that will be
834 received with a pull operation.
837 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
838 under current version control system. When called with a prefix
839 argument, you can remove a file from the ignored file list.
842 *** `cvs-append-to-ignore' has been renamed to `vc-cvs-append-to-ignore'
843 because it is moved to vc-cvs.el.
848 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
851 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
853 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
854 are obsolete. Customize the `woman-*' faces instead.
856 ** Obsolete packages:
858 *** Iswitchb is made obsolete by icomplete-mode.
860 *** longlines.el is obsolete; use visual-line-mode instead.
865 *** terminal.el is obsolete; use term.el instead.
867 *** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.
869 *** xesam.el is obsolete, because the XESAM project has been canceled.
872 *** yow.el is obsolete; use fortune.el or cookie1.el instead.
875 *** The Info-edit command is obsolete. Editing Info nodes by hand
876 has not been relevant for some time.
879 * New Modes and Packages in Emacs 24.4
882 ** New package `eww' is a built-in web browser.
883 It is only available if Emacs is compiled with libxml2 support.
885 ** New minor mode `superword-mode'.
886 This overrides the default word motion commands to treat "symbol_words"
887 as a single word, similar to what `subword-mode' does.
890 ** New package nadvice.el offers lighter-weight advice facilities.
893 *** add-function/remove-function, which can be used to add/remove code on any
894 function-carrying place, such as process-filters or `<foo>-function' hooks.
896 *** advice-add/advice-remove to add/remove a piece of advice on a named
897 function,much like `defadvice' does.
899 ** New package frameset.el.
900 It provides a set of operations to save a frameset (the state of all
901 or a subset of the existing frames and windows, somewhat similar to a
902 frame configuration), both in-session and persistently, and restore it
903 at some point in the future.
906 ** New package filenotify.el provides an interface for file system
907 notifications. It requires that Emacs be compiled with one of the
908 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
911 * Incompatible Lisp Changes in Emacs 24.4
914 ** `kill-region' has lost its `yank-handler' optional argument.
917 ** `(input-pending-p)' no longer runs other timers that are ready to run.
918 The new optional CHECK-TIMERS parameter allows for the prior behavior.
921 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
924 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
925 Some languages match those as »...«, and others as «...», so it is
926 better for Emacs to stay neutral by default.
929 ** In compiled Lisp files, the header no longer includes a timestamp.
932 ** The default file coding for Emacs Lisp files is now utf-8.
933 (See `file-coding-system-alist'.) In most cases, this change is
934 transparent, but files that contain unusual characters without
935 specifying an explicit coding system may fail to load with obscure
936 errors. You should either convert them to utf-8 or add an explicit
940 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
941 It used to disable the minor mode, major mode, and text-property keymaps,
942 whereas now it simply has higher precedence.
944 ** Default process filters and sentinels are not nil any more.
945 Instead they default to a function that does what the nil value used to do.
948 ** `read-event' does not return decoded chars in ttys any more.
949 As was the case in Emacs 22 and before, the decoding of terminal
950 input, according to `keyboard-coding-system', is not performed in
951 `read-event' any more. But unlike in Emacs 22, this decoding is still
952 done before input-decode-map, function-key-map, etc.
955 ** The option `inhibit-local-menu-bar-menus' has been removed.
958 ** Frame-local variables that affect redisplay do not work any more.
959 More specifically, redisplay does not bother to check for a frame-local
960 value when looking up variables.
963 ** nil and "unbound" are indistinguishable in `symbol-function'.
964 `symbol-function' does not signal a `void-function' error any more.
965 To determine if a symbol's function definition is void, use `fboundp'.
968 ** `defadvice' does not honor the `freeze' flag and cannot advise
969 special-forms any more.
972 ** `dolist' no longer binds VAR while evaluating the RESULT form,
973 when lexical binding is enabled. Previously, VAR was bound to nil,
974 which often led to spurious unused-variable warnings.
977 ** The return value of `backup-buffer' has changed.
978 The second argument is no longer an SELinux context, instead it is an
979 alist of extended attributes as returned by the new function
980 `file-extended-attributes'. The attributes can be applied to another
981 file using `set-file-extended-attributes'.
984 ** By default `copy-file' no longer copies file permission bits to an
985 existing destination; and it sets the file permission bits of a newly
986 created destination to those of the source, masked by the default file
987 permissions. To copy the file permission bits, pass t as the
988 PRESERVE-PERMISSIONS argument of `copy-file'.
991 ** `visited-file-modtime' now returns -1 for nonexistent files.
992 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
993 in the presence of files with negative time stamps.
996 ** The cars of the elements in `interpreter-mode-alist' are now
997 treated as regexps rather than literal strings.
1000 * Lisp Changes in Emacs 24.4
1003 ** The second argument of `eval' can now specify a lexical environment.
1006 ** New functions `special-form-p' and `macrop'.
1008 ** New macro `define-alternatives' can be used to define generic commands.
1009 Generic commands are interactive functions whose implementation can be
1010 selected among several alternatives, as a matter of user preference.
1012 ** The `defalias-fset-function' property lets you catch `defalias'
1013 calls, and redirect them to your own function, instead of `fset'.
1016 ** New variable `enable-dir-local-variables'.
1017 Directory-local variables are ignored if this is nil. This may be
1018 useful for modes that want to ignore directory-locals while still
1019 respecting file-local variables.
1022 ** New function `get-pos-property'.
1024 ** Completion changes
1026 *** The separator for `completing-read-multiple' can now be a regexp.
1027 The default separator has been changed to allow surrounding spaces
1030 *** The `common-substring' arg of `display-completion-list' is obsolete.
1031 Either use `completion-all-completions', which returns highlighted
1032 strings (including for partial or substring completion), or call
1033 `completion-hilit-commonality' to add the highlight.
1035 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1036 let you enable symbol prettification (replacing a string like "lambda" with
1037 the Greek lambda character).
1042 *** Functions to pop up menus and dialogs now work on all terminals,
1043 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1044 `message-box', `yes-or-no-p', etc.
1046 The function `display-popup-menus-p' will now return non-nil for a
1047 display or frame whenever a mouse is supported on that display or
1050 *** New hook `tty-setup-hook'.
1054 *** New display action function `display-buffer-no-window' to not
1055 display the buffer in a window.
1057 *** New display action alist entry `allow-no-window' to indicate the
1058 caller of `display-buffer' is ready to handle the case of not
1059 displaying the buffer in a window.
1061 ** New hook `pre-redisplay-function'.
1064 ** New bool-vector set operation functions:
1065 *** `bool-vector-exclusive-or'
1066 *** `bool-vector-union'
1067 *** `bool-vector-intersection'
1068 *** `bool-vector-set-difference'
1069 *** `bool-vector-not'
1070 *** `bool-vector-subsetp'
1071 *** `bool-vector-count-consecutive'
1072 *** `bool-vector-count-population'
1075 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1077 ** Error-handling changes
1080 *** New function `define-error'.
1082 *** `with-demoted-errors' takes an additional argument `format'.
1085 ** New macro `with-eval-after-load'.
1086 This is like the old `eval-after-load', but better behaved.
1089 ** New library subr-x.el with miscellaneous small utility functions
1090 *** `hash-table-keys'
1091 *** `hash-table-values'
1092 *** `string-blank-p`
1093 *** `string-empty-p`
1095 *** `string-reverse`
1096 *** `string-trim-left'
1097 *** `string-trim-right'
1099 *** `string-remove-prefix'
1100 *** `string-remove-suffix'
1103 ** Obsoleted functions:
1106 *** `lisp-complete-symbol'
1107 *** `field-complete'
1108 *** `minibuffer-completion-contents'
1109 *** `isearch-nonincremental-exit-minibuffer'
1110 *** `isearch-filter-visible'
1111 *** `generic-make-keywords-list'
1112 *** `get-upcase-table' (use `case-table-get-table' instead).
1114 ** `with-wrapper-hook' is obsoleted by `add-function'.
1115 The few hooks that used with-wrapper-hook are replaced as follows:
1116 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1117 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1118 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1121 ** `byte-compile-interactive-only-functions' is now obsolete.
1122 To specify that a command should only be called interactively, give it
1123 a non-nil `interactive-only' property.
1126 ** `split-string' now takes an optional argument TRIM.
1127 The value, if non-nil, is a regexp that specifies what to trim from
1128 the start and end of each substring.
1131 ** New function `string-suffix-p'.
1133 ** File-handling changes
1136 *** Support for filesystem notifications.
1137 Emacs now supports notifications of filesystem changes, such as
1138 creation, modification, and deletion of files. This requires the
1139 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1140 MS-Windows systems, this is supported for Windows XP and newer
1144 *** The 9th element returned by `file-attributes' is now unspecified.
1145 Formerly, it was t if the file's gid would change if file were deleted
1146 and recreated. This value has been inaccurate for years on many
1147 platforms, and nobody seems to have noticed or cared.
1150 *** The 6th argument to `copy-file' has been renamed to
1151 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1152 Unix file permission bits as well as SELinux context.
1155 *** The function `file-ownership-preserved-p' now has an optional
1156 argument GROUP which causes it check for file group too. This can be
1157 used in place of the 9th element of `file-attributes'.
1160 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1161 argument, with the same interpretation as the returned value of
1162 `visited-file-modtime'.
1164 ** Autorevert changes
1167 *** If Emacs is compiled with file notification support, notifications
1168 are used instead of checking the time stamp of the files. You can
1169 disable this by setting the user option `auto-revert-use-notify' to
1170 nil. Alternatively, a regular expression of directories to be
1171 excluded from file notifications can be specified by
1172 `auto-revert-notify-exclude-dir-regexp'.
1175 *** The new user option `auto-revert-remote-files' enables reversion
1176 of remote files when set to non-nil.
1180 *** The function `face-spec-set' is now like `setq' for face specs.
1181 Its third arg now accepts values specifying a face spec type (defface,
1182 custom, or override spec), and the relevant spec is set accordingly.
1185 *** New function `add-face-text-property', which can be used to
1186 conveniently prepend/append new face properties.
1188 *** Face specs set via Custom themes now replace the `defface' spec
1189 rather than inheriting from it (as do face specs set via Customize).
1191 *** New face characteristic (supports :underline (:style wave))
1192 specifies whether or not the terminal can display a wavy line.
1195 *** New face spec attribute :distant-foreground
1196 specifies foreground to use if background color is near the foreground
1197 color that would otherwise have been used.
1202 *** `image-animated-p' is now `image-multi-frame-p'.
1203 It returns non-nil for any image that contains multiple frames,
1204 whether or not it specifies a frame delay.
1207 *** New variable `image-default-frame-delay' gives the frame delay for
1208 animated images which do not specify a frame delay.
1211 *** New functions `image-current-frame' and `image-show-frame' for getting
1212 and setting the current frame of a multi-frame image.
1217 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1218 **** object-name -> eieio-object-name
1219 **** object-class -> eieio-object-class
1220 **** object-class-fast -> eieio--object-class
1221 **** object-class-name -> eieio-object-class-name
1222 **** object-name-string -> eieio-object-name-string
1223 **** object-num-slots -> eieio--object-num-slots
1224 **** object-set-name-string -> eieio-object-set-name-string
1225 **** class-of -> eieio-object-class
1226 **** class-name -> eieio-class-name
1227 **** class-parent -> eieio-class-parent
1228 **** class-parents -> eieio-class-parents
1229 **** class-parents-fast -> eieio-class-parents-fast
1230 **** class-children -> eieio-class-children
1231 **** class-num-slots -> eieio--class-num-slots
1232 **** class-precedence-list -> eieio-class-precedence-list
1233 **** class-direct-subclasses -> eieio-class-children
1234 **** class-direct-superclasses -> eieio-class-parents
1236 ** Changes in encoding and decoding of text
1239 *** New coding-system `prefer-utf-8'.
1240 This is like `undecided' but prefers UTF-8 on decoding if the text to
1241 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1242 any non-ASCII characters are automatically encoded as UTF-8.
1245 *** New attributes of coding-systems whose type is `undecided'.
1246 Two new attributes, `:inhibit-null-byte-detection' and
1247 `:inhibit-iso-escape-detection', determine how to detect encoding of
1248 text that includes null bytes and ISO-2022 escape sequences,
1249 respectively. Each of these attributes can be either nil, zero, or
1250 t. If it is t, decoding text ignores null bytes and, respectively,
1251 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1252 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1253 text is encoded in one of the ISO-2022 encodings, such as
1254 iso-2022-7bit. If the value is zero, Emacs consults the variables
1255 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1257 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1258 UTF-8 encoding and decoding, whenever possible.
1260 These attributes are only meaningful for coding-systems of type
1261 `undecided'. (The type of a coding-system is determined by its
1262 `:coding-type' attribute and can be accessed by calling the
1263 `coding-system-type' function.)
1265 ** `time-to-seconds' is not obsolete any more.
1267 ** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
1268 When you edit DIR/FILE, Emacs normally creates a symbolic link
1269 DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
1270 is being edited. Formerly, if there was already a non-symlink file
1271 named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
1272 through DIR/.#FILE.9. These fallbacks have been removed, so that
1273 Emacs now no longer locks DIR/FILE in that case.
1275 On file systems that do not support symbolic links, the lock is now a
1276 regular file with contents being what would have been in the symlink.
1279 ** New functions `group-gid' and `group-real-gid'.
1282 ** The spelling of the rx.el category `chinese-two-byte' has been
1283 corrected (the first 'e' was missing).
1285 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1288 *** The package descriptor and name of global variables, constants,
1289 and functions should be separated by two hyphens if the symbol is not
1290 meant to be used by other packages.
1293 * Changes in Emacs 24.4 on Non-Free Operating Systems
1295 ** The procedure for building Emacs on MS-Windows has changed.
1296 It is now built by running the same configure script as on all other
1297 platforms. This requires the MSYS environment and MinGW development
1298 tools. See the updated instructions in nt/INSTALL for details.
1300 Using the Posix configure script and Makefile's also means a change in
1301 the directory structure of the Emacs installation on Windows. It is
1302 now the same as on GNU and Unix systems. In particular, the auxiliary
1303 programs, such as cmdproxy.exe and hexl.exe, are in
1304 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1305 version), version-independent site-lisp is in share/emacs/site-lisp,
1306 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1307 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1308 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1309 directories and will find the files in there automatically; there's no
1310 need to set any variables due to this change.)
1313 ** Emacs on Windows 2000 and later can now access files and directories
1314 whose names cannot be encoded in the current system codepage.
1316 The new variable `w32-unicode-filenames' controls this feature: if it
1317 is t, Emacs uses Unicode APIs to pass file names to system calls,
1318 which lifts the limitation of file names to the current locale.
1321 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1322 The backtrace is written to the 'emacs_backtrace.txt' file in the
1323 directory where Emacs was running.
1326 ** The variable `buffer-file-type' is no longer supported.
1327 Setting it has no effect, and %t in the mode-line format is ignored.
1328 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1329 modifying it has no effect.
1332 ** Lock files now work on MS-Windows.
1333 This allows to avoid losing your edits if the same file is being
1334 edited in another Emacs session or by another user. See the node
1335 "Interlocking" in the Emacs User Manual for the details. To disable
1336 file locking, customize `create-lockfiles' to nil.
1338 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1339 GNUstep and Mac OS X 10.4 use the old font backend.
1340 To use the old backend by default, do on the command line:
1341 % defaults write org.gnu.Emacs FontBackend ns
1343 ** Improved fullscreen support on Mac OS X.
1344 Emacs supports both native (Mac OS X 10.7 and newer) and "old style" fullscreen.
1345 Customize `ns-use-native-fullscreen' to change the style.
1346 For Mac OS X 10.7 and newer, native is the default.
1348 ** On Mac OS X 10.7 and newer, Emacs uses sRGB colorspace by default.
1349 Customize `ns-use-srgb-colorspace' to disable this. Note that this
1350 does not apply to images.
1353 * Installation Changes in Emacs 24.3
1355 ** The default X toolkit is now Gtk+ version 3.
1356 If you don't pass `--with-x-toolkit' to configure, or if you use
1357 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1358 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1359 You can explicitly require a specific version by passing
1360 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1362 ** New configure option `--enable-link-time-optimization', to utilize
1363 an appropriate feature provided by GCC since version 4.5.0.
1365 ** New configure option `--without-all' to disable most of the optional
1366 features (image support, etc.) that are normally enabled by default.
1368 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1369 Emacs). If building with GCC, this enables compile-time checks that
1370 warn/give errors about possibly-questionable C code. On a recent GNU
1371 system there should be no warnings; on older and on non-GNU systems
1372 the results may be useful to developers.
1374 ** The configure option `--enable-use-lisp-union-type' has been
1375 renamed to `--enable-check-lisp-object-type', as the resulting
1376 Lisp_Object type no longer uses a union to implement the compile time
1377 check that this option enables.
1379 ** The configure option `--disable-maintainer-mode' has been removed,
1380 as it was confusingly-named and rarely useful.
1382 ** The configure options `--program-prefix', `--program-suffix', and
1383 `--program-transform-name' apply to more than just the installed
1384 binaries. Now they also affect the man pages, icons, and the
1385 etc/emacs.desktop file; but not the info pages, since this would break
1386 links between the various manuals.
1388 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1389 overwriting "emacs" in the installation bin/ directory with a link
1392 ** Emacs uses libtinfo in preference to libncurses, if available.
1394 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1395 /usr/pkg/lib to the linker search path. You must add them yourself if
1398 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1399 (from the bin and libexec directories, respectively). The former is
1400 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1403 * Startup Changes in Emacs 24.3
1405 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1406 lisp/ directory. There should not be any there anyway. If you have
1407 been adding them there, put them somewhere else; e.g., site-lisp.
1409 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1412 * Changes in Emacs 24.3
1416 *** `C-h f' (`describe-function') can now perform autoloading.
1417 When this command is called for an autoloaded function whose docstring
1418 contains a key substitution construct, that function's library is
1419 automatically loaded, so that the documentation can be shown
1420 correctly. To disable this, set `help-enable-auto-load' to nil.
1422 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1423 even after their associated libraries have been loaded (and the
1424 autoloads have been redefined as functions).
1428 *** Images displayed via ImageMagick now support transparency and the
1429 :background image specification property.
1431 *** When available, ImageMagick support is automatically enabled.
1432 It is no longer necessary to call `imagemagick-register-types'
1433 explicitly to install ImageMagick image types; that function is called
1434 automatically at startup, or when customizing an imagemagick- option.
1436 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1437 ImageMagick to view images. (You must call `imagemagick-register-types'
1438 afterwards if you do not use customize to change this.)
1440 *** The new variable `imagemagick-enabled-types' also affects which
1441 ImageMagick types are treated as images. The function
1442 `imagemagick-filter-types' returns the list of types that will be
1447 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1448 next and previous path separator, respectively.
1450 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1451 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1452 non-nil before enabling the mode.
1456 *** New option `mode-line-default-help-echo' specifies the help text
1457 (shown in a tooltip or in the echo area) for any part of the mode line
1458 that does not have its own specialized help text.
1460 *** You can now click mouse-3 in the coding system indicator to invoke
1461 `set-buffer-file-coding-system'.
1463 ** Server and client
1465 *** emacsclient now obeys string values for `initial-buffer-choice',
1466 if it is told to open a new frame without specifying any file to visit
1467 or expression to evaluate.
1469 *** New option `server-auth-key' specifies a shared server key.
1471 ** Emacs now generates backtraces on fatal errors.
1472 On encountering a fatal error, Emacs now outputs a textual description
1473 of the fatal signal, and a short backtrace on platforms like glibc
1474 that support backtraces.
1476 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1477 This minor mode replaces `toggle-read-only', which is now obsolete.
1479 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1480 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1481 respectively, without exiting from the prompt.
1483 ** In the Package Menu, newly-available packages are listed as "new",
1484 and sorted above the other "available" packages by default.
1486 ** If your Emacs was built from a repository checkout, the new variable
1487 `emacs-bzr-version' contains information about the bzr revision used.
1489 ** New option `create-lockfiles' specifies usage of lockfiles.
1490 It defaults to t. Changing it to nil inhibits the creation of lock
1491 files (use this with caution).
1493 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1494 variables on remote hosts.
1496 ** The entry for PCL-CVS has been removed from the Tools menu.
1497 The PCL-CVS commands are still available via the keyboard.
1499 ** Using "unibyte: t" in Lisp source files is obsolete.
1500 Use "coding: raw-text" instead.
1502 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1503 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1504 The previous binding, introduced in Emacs 24.1, was a mistake, because
1505 `C-c LETTER' bindings are reserved for user customizations.
1507 ** Internationalization
1509 *** New language environment: Persian.
1511 *** New input method `vietnamese-vni'.
1513 ** Nextstep (GNUstep / Mac OS X) port
1515 *** Support for fullscreen and the frame parameter fullscreen.
1517 *** A file dialog is used for open/save operations initiated from the
1521 * Editing Changes in Emacs 24.3
1523 ** Search and Replace
1525 *** Non-regexp Isearch now performs "lax" space matching.
1526 Each sequence of spaces in the supplied search string may match any
1527 sequence of one or more whitespace characters, as specified by the
1528 variable `search-whitespace-regexp'. (This variable is also used by a
1529 similar existing feature for regexp Isearch.)
1531 *** New Isearch command `M-s SPC' toggles lax space matching.
1532 This applies to both ordinary and regexp Isearch.
1534 *** New option `replace-lax-whitespace'.
1535 If non-nil, `query-replace' uses flexible whitespace matching too.
1538 *** Global `M-s _' starts a symbol (identifier) incremental search,
1539 and `M-s _' in Isearch toggles symbol search mode.
1540 `M-s c' in Isearch toggles search case-sensitivity.
1542 ** Navigation commands
1544 *** New binding `M-g c' for `goto-char'.
1546 *** New binding `M-g TAB' for `move-to-column'.
1548 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1549 interactively with no prefix arg. Previously, it moved to column 1.
1551 ** New option `yank-handled-properties' allows processing of text
1552 properties on yanked text, in ways that are more general than just
1553 removing them (as is done by `yank-excluded-properties').
1555 ** New option `delete-trailing-lines' specifies whether
1556 M-x delete-trailing-whitespace should delete trailing lines at the end
1557 of the buffer. It defaults to t.
1559 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1561 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1562 `ucs-insert' is now an obsolete alias for `insert-char'.
1564 ** The `z' key no longer has a binding in most special modes.
1565 It used to be bound to `kill-this-buffer', but `z' is too easy to
1568 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1569 It copies the region-rectangle as the last rectangle kill.
1573 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1575 *** New option `register-separator' specifies the register containing
1576 the text to put between collected texts for use with
1577 M-x append-to-register and M-x prepend-to-register.
1580 * Changes in Specialized Modes and Packages in Emacs 24.3
1582 ** Common Lisp emulation (CL)
1584 *** CL's main entry is now (require 'cl-lib).
1585 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1586 i.e., all its definitions have the "cl-" prefix (and internal definitions
1587 use the "cl--" prefix).
1589 If `cl' provided a feature under the name `foo', then `cl-lib'
1590 provides it under the name `cl-foo' instead; with the exceptions of the
1591 few `cl' definitions that had to use `foo*' to avoid conflicts with
1592 pre-existing Elisp entities. These have been renamed to `cl-foo'
1593 rather than `cl-foo*'.
1595 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1596 provide the old, non-prefixed names. Some exceptions are listed below:
1598 *** `cl-flet' is not like `flet' (which is deprecated).
1599 Instead it obeys the behavior of Common-Lisp's `flet'.
1600 In particular, in cl-flet function definitions are lexically scoped,
1601 whereas in flet the scoping is dynamic.
1603 *** `cl-labels' is slightly different from `labels'.
1604 The difference is that it relies on the `lexical-binding' machinery
1605 (as opposed to the `lexical-let' machinery used previously) to capture
1606 definitions in closures, so such closures will only work if `lexical-binding'
1609 *** `cl-letf' is not exactly like `letf'.
1610 The only difference is in details that relate to some deprecated usage
1611 of `symbol-function' in place forms.
1613 *** `progv' was rewritten to use the `let' machinery.
1614 A side effect is that variables without corresponding values are bound
1615 to nil rather than being made unbound.
1617 *** The following methods of extending `setf' are obsolete
1618 (use features from gv.el instead):
1619 `define-modify-macro' (use `gv-letplace')
1620 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1621 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1622 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1626 *** Changes are now highlighted using the same color scheme as in
1627 modern VCSes. Deletions are displayed in red (new faces
1628 `diff-refine-removed' and `smerge-refined-removed', and new definition
1629 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1630 and `smerge-refined-added', and new definition of `diff-added').
1632 *** The variable `diff-use-changed-face' defines whether to use the
1633 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1634 changes in context diffs.
1636 *** The new command `diff-delete-trailing-whitespace' removes trailing
1637 whitespace introduced by a diff.
1639 ** Ediff now uses the same color scheme as Diff mode.
1643 A new version of python.el, which provides several new features, including:
1644 per-buffer shells, better indentation, Python 3 support, and improved
1645 shell-interaction compatible with iPython (and virtually any other
1648 *** Some user options have been replaced/renamed, including (old -> new):
1649 **** python-indent -> python-indent-offset
1650 **** python-guess-indent -> python-indent-guess-indent-offset
1651 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1652 **** python-use-skeletons -> python-skeleton-autoinsert
1654 *** Some user options have been removed, including:
1656 **** `python-indent-string-contents': Strings are never indented.
1658 **** `python-honour-comment-indentation':
1659 Comments are always considered as indentation markers.
1661 **** `python-continuation-offset': Indentation is automatically
1662 calculated in a pep8 compliant way depending on the context.
1664 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1665 Have no direct mapping as the shell interaction is completely different.
1667 **** `python-python-command', `python-jython-command':
1668 Replaced by `python-shell-interpreter'.
1670 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1671 `python-pdbtrack-minor-mode-string', `python-source-modes':
1674 *** Some commands have been replaced (old -> new):
1675 **** python-insert-class -> python-skeleton-class
1676 **** python-insert-def -> python-skeleton-def
1677 **** python-insert-for -> python-skeleton-for
1678 **** python-insert-if -> python-skeleton-if
1679 **** python-insert-try/except -> python-skeleton-try
1680 **** python-insert-try/finally -> python-skeleton-try
1681 **** python-insert-while -> python-skeleton-while
1682 **** python-find-function -> python-nav-jump-to-defun
1683 **** python-next-statement -> python-nav-forward-sentence
1684 **** python-previous-statement -> python-nav-backward-sentence
1685 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1686 **** python-end-of-defun-function -> python-nav-end-of-defun
1687 **** python-send-buffer -> python-shell-send-buffer
1688 **** python-send-defun -> python-shell-send-defun
1689 **** python-send-region -> python-shell-send-region
1690 **** python-send-region-and-go -> emulate with python-shell-send-region
1691 and python-shell-switch-to-shell
1692 **** python-send-string -> python-shell-send-string
1693 **** python-switch-to-python -> python-shell-switch-to-shell
1694 **** python-describe-symbol -> python-eldoc-at-point
1698 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1700 *** The D-Bus object manager interface is implemented.
1702 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
1703 if their value does not fit into Emacs's integer range.
1705 *** The function `dbus-call-method' is now non-blocking.
1706 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
1708 *** Signals can also be sent as unicast messages.
1710 *** The argument list of `dbus-register-signal' has been extended,
1711 according to the new match rule types of D-Bus.
1713 *** `dbus-init-bus' supports private connections.
1715 *** There is a new function `dbus-setenv'.
1717 ** `desktop-path' no longer includes the "." directory.
1718 Desktop files are now located in ~/.emacs.d by default.
1722 *** `dired-do-async-shell-command' executes each file sequentially
1723 if the command ends in `;' (when operating on multiple files).
1724 Otherwise, it executes the command on each file in parallel.
1726 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1727 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
1730 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
1731 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
1732 mark/unmark/flag all files in the active region.
1734 *** The minibuffer default for `=' (`dired-diff') has changed.
1735 It is now the backup file for the file at point, if one exists.
1736 In Transient Mark mode the default is the file at the active mark.
1738 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1739 The global binding for `M-=', `count-words-region' is in effect.
1743 *** New module "notifications", which can send a notification when you
1744 receive a private message or your nickname is mentioned.
1746 *** ERC will look up server/channel names via auth-source and use any
1749 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1750 only applies to messages sent by lurkers.
1752 ** reStructuredText mode
1754 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1755 fontification, comment handling, and customization have all been revised
1758 *** Support for `imenu' and `which-function-mode'.
1760 *** The reStructuredText syntax is more closely covered.
1761 Sphinx support has been improved.
1763 *** `rst-insert-list' inserts new list or continues existing lists.
1765 *** A negative prefix argument always works for `rst-adjust'.
1767 *** The window configuration is reset after displaying a TOC.
1769 *** The constant `rst-version' describes the rst.el package version.
1773 *** Support for percent literals and recognition of regular expressions
1774 in method calls without parentheses with more methods, including Cucumber
1777 *** Improved syntax highlighting and indentation.
1779 *** New command `ruby-toggle-block', bound to `C-c {'.
1781 *** Some non-standard keybindings/commands have been removed:
1783 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
1785 **** `ruby-mark-defun'; use `mark-defun'.
1787 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1788 appropriate settings for the variables `beginning-of-defun-function'
1789 and `end-of-defun-function'.
1791 **** Non-standard keybindings for `backward-kill-word', `comment-region',
1792 `reindent-then-newline-and-indent' and `newline' have been removed.
1794 ** Shell Script mode
1796 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1798 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1800 *** `sh-use-smie' lets you choose a new indentation and navigation code.
1804 *** The free software compiler GHDL is supported (and now the default).
1806 *** Support for the VHDL-AMS packages has been added/updated.
1808 *** Updated to the 2002 revision of the VHDL standard.
1810 *** Accepts \r and \f as whitespace.
1814 *** The faces used by Apropos are now directly customizable.
1815 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1816 see the `apropos' Custom group for details.
1818 *** The old options whose values specified faces to use have been removed
1819 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1823 *** This package has been rewritten to use Tabulated List mode.
1825 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
1826 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1830 *** Algebraic simplification mode is now the default.
1831 To restrict to the limited simplifications given by the former
1832 default simplification mode, use `m I'.
1836 *** You can customize the header text that appears above each calendar month.
1837 See the variable `calendar-month-header'.
1839 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
1841 *** The calendars produced by cal-html include holidays.
1842 Customize `cal-html-holidays' to change this.
1846 *** The major modes from the parser generators "Bovine" and "Wisent"
1847 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1848 are in `auto-mode-alist', and the corresponding manuals are included.
1852 **** Menu support for the "Configuration" feature. This allows users to
1853 choose the active configuration (such as debug or install) from the menu.
1855 **** New command `ede-set' to interactively set project-local variables.
1857 **** Support for compiling, debugging, and running in "generic" projects.
1859 **** Autoconf editing support for M4 macros with complex arguments.
1861 **** Compilation support for the "linux" project type.
1863 **** "simple" projects have been removed; use "generic" projects instead.
1867 **** Support for parsing #include statements inside a namespace in C/C++.
1869 **** Improved support for 'extern "C"' declarations in C/C++.
1871 **** The ability to ignore more common special C/C++ preprocessor symbols,
1872 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1873 If available, include cdefs.h as an additional source of preprocessor symbols.
1875 **** Improved C/C++ function pointer parsing.
1877 **** In Python, support for converting imports to include file names.
1879 **** Ability to dynamically determine the Python load path.
1881 **** Support for the Python 'WITH' and 'AT' keywords.
1883 **** Improved tooltip completion.
1887 **** The SRecode manual is now included.
1889 **** Tag generation supports constructor/destructor settings and system
1890 include differentiation.
1892 **** Addition of 'Framework' support: Frameworks are specified when a
1893 particular kind of library (such as Android) is needed in a common language
1896 **** Support for nested templates and let variables override based on priority.
1898 **** Support for merging tables from multiple related modes, such as
1899 default -> c++ -> arduino.
1901 ** Compile has a new option `compilation-always-kill'.
1905 *** `custom-reset-button-menu' now defaults to t.
1907 *** Non-option variables are never matched in `customize-apropos' and
1908 `customize-apropos-options' (i.e., the prefix argument does nothing for
1909 these commands now).
1913 *** The variables `term-default-fg-color' and `term-default-bg-color'
1914 are now deprecated in favor of the customizable face `term'.
1916 *** You can customize how to display ANSI terminal colors and styles
1917 by customizing the corresponding `term-color-<COLOR>',
1918 `term-color-underline' and `term-color-bold' faces.
1922 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
1924 *** Remote processes are now also supported on remote MS-Windows hosts.
1928 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1929 Previously, this slot stored semicolon-separated attribute-value pairs
1930 appended to some imap URLs, but this is not compatible with RFC 3986.
1931 So now the `filename' slot stores the entire path and query components,
1932 and the `attributes' slot is always nil.
1934 *** New function `url-encode-url' for encoding a URI string.
1935 The `url-retrieve' function now uses this to encode its URL argument,
1936 in case that is not properly encoded.
1938 ** notifications.el supports now version 1.2 of the Notifications API.
1939 The function `notifications-get-capabilities' returns the supported
1942 ** Flymake uses fringe bitmaps to indicate errors and warnings.
1943 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1944 `flymake-warning-bitmap'.
1946 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1947 specifying URL types that should be converted to remote file names at
1948 the FFAP prompt. The default is now '("ftp").
1950 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
1951 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
1953 ** New option `mouse-avoidance-banish-position' specifies where the
1954 `banish' mouse avoidance setting moves the mouse.
1956 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1957 closing brackets to be aligned with the line of the opening bracket.
1959 ** In Proced mode, new command `proced-renice' renices marked processes.
1961 ** New option `async-shell-command-buffer' specifies the buffer to use
1962 for a new asynchronous `shell-command' when the default output buffer
1963 `*Async Shell Command*' is already in use.
1965 ** SQL mode has a new option `sql-db2-escape-newlines'.
1966 If non-nil, newlines sent to the command interpreter will be escaped
1967 by a backslash. The default does not escape the newlines and assumes
1968 that the sql statement will be terminated by a semicolon.
1970 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1971 (and modes that derive from it), sorts the column at point, or the Nth
1972 column if a numeric prefix argument is given.
1974 ** `which-func-modes' now defaults to t, so Which Function mode, when
1975 enabled, applies to all applicable major modes.
1977 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
1980 ** Follow mode no longer works by using advice.
1981 The option `follow-intercept-processes' has been removed.
1983 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
1985 ** Hooks renamed to avoid obsolete "-hooks" suffix:
1986 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1987 *** semantic-change-hooks -> semantic-change-functions
1988 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1989 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1990 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1991 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1992 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1993 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1994 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1995 *** rcirc-activity-hooks -> rcirc-activity-functions
1996 *** rcirc-print-hooks -> rcirc-print-functions
1997 *** dbus-event-error-hooks -> dbus-event-error-functions
1998 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1999 *** checkdoc-style-hooks -> checkdoc-style-functions
2000 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2001 *** archive-extract-hooks -> archive-extract-hook
2002 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2003 *** hfy-post-html-hooks -> hfy-post-html-hook
2004 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2005 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2006 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2007 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2009 ** Obsolete packages
2012 In most cases, assoc+member+push+delq work just as well.
2013 And in any case it's just a terrible package: ugly semantics, terrible
2014 inefficiency, and not namespace-clean.
2023 * Incompatible Lisp Changes in Emacs 24.3
2025 ** Docstrings starting with `*' no longer indicate user options.
2026 Only variables defined using `defcustom' are considered user options.
2027 The function `user-variable-p' is now an obsolete alias for
2028 `custom-variable-p'.
2030 ** The return values of `defalias', `defun' and `defmacro' have changed,
2031 and are now undefined. For backwards compatibility, `defun' and
2032 `defmacro' currently return the name of the newly defined
2033 function/macro, but this should not be relied upon.
2035 ** `random' by default now returns a different random sequence in
2036 every Emacs run. Use `(random S)', where S is a string, to set the
2037 random seed to a value based on S, in order to get a repeatable
2038 sequence in later calls.
2040 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2041 that substring is inserted literally even if the LITERAL arg is
2042 non-nil, instead of causing an error to be signaled.
2044 ** `select-window' now always makes the window's buffer current.
2045 It does so even if the window was selected before.
2047 ** The function `x-select-font' can return a font spec, instead of a
2048 font name as a string. Whether it returns a font spec or a font name
2049 depends on the graphical library.
2051 ** `face-spec-set' no longer sets frame-specific attributes when the
2052 third argument is a frame (that usage was obsolete since Emacs 22.2).
2054 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2056 ** The CL package's `get-setf-method' function no longer exists.
2057 Generalized variables are now part of core Emacs Lisp, and implemented
2058 differently to the way cl.el used to do it. It is not possible to
2059 define a compatible replacement for `get-setf-method'. See the file
2060 gv.el for internal details of the new implementation.
2062 ** The arguments of `dbus-register-signal' are no longer just strings,
2063 but keywords or keyword-string pairs. The old argument list will
2064 still be supported for Emacs 24.x.
2066 ** Miscellaneous name changes
2067 Some Lisp symbols have been renamed to correct their spelling,
2068 or to be more consistent with standard Emacs terminology.
2070 *** Renamed functions
2071 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2072 **** inactivate-input-method -> deactivate-input-method
2073 **** quail-inactivate -> quail-deactivate
2074 **** robin-inactivate -> robin-deactivate
2075 **** viper-inactivate-input-method -> viper-deactivate-input-method
2076 **** viper-inactivate-input-method-action ->
2077 viper-deactivate-input-method-action
2078 **** ucs-input-inactivate -> ucs-input-deactivate
2081 The old hooks are still supported for backward compatibility, but they
2082 are deprecated and will be removed eventually.
2083 **** input-method-inactivate-hook -> input-method-deactivate-hook
2084 **** robin-inactivate-hook -> robin-deactivate-hook
2085 **** quail-inactivate-hook -> quail-deactivate-hook
2087 *** Renamed variables
2088 **** follow-deactive-menu -> follow-inactive-menu
2089 **** inactivate-current-input-method-function ->
2090 deactivate-current-input-method-function
2092 ** Some obsolete functions, variables, and faces have been removed:
2093 *** `last-input-char', `last-command-char', `unread-command-char'
2094 *** `facemenu-unlisted-faces'
2095 *** `rmail-decode-mime-charset'
2096 *** `iswitchb-read-buffer'
2097 *** `sc-version', `sc-submit-bug-report'
2098 *** `set-char-table-default'
2099 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2100 *** `compile-internal'
2102 *** `mode-line-inverse-video'
2103 *** `follow-mode-off-hook'
2104 *** `cvs-commit-buffer-require-final-newline'
2105 (use `log-edit-require-final-newline' instead)
2106 *** `cvs-changelog-full-paragraphs'
2107 (use `log-edit-changelog-full-paragraphs' instead)
2108 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2109 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2110 *** `vc-master-templates' (use `vc-handled-backends' instead)
2111 *** `vc-checkout-carefully'
2114 * Lisp Changes in Emacs 24.3
2116 ** CL-style generalized variables are now in core Elisp.
2117 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2118 You can define your own generalized variables using `gv-define-simple-setter',
2119 `gv-define-setter', etc.
2121 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2122 This can significantly speed up execution of non-byte-compiled code,
2123 but can also bump into previously unnoticed cyclic dependencies.
2124 These are generally harmless: they will simply cause the macro calls
2125 to be left for later expansion (as before), but will result in a
2126 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2127 You may wish to restructure your code so this does not happen.
2129 ** New sampling-based Elisp profiler.
2130 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2131 When finished, use M-x profiler-stop. The sampling rate can be based on
2132 CPU time or memory allocations.
2134 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2135 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2137 ** New macros `setq-local' and `defvar-local'.
2139 ** Face underlining can now use a wave.
2141 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2142 of `read-regexp' accepts a string ending with a colon and space, and its
2143 second argument DEFAULTS can be a list of strings accessible via `M-n'
2144 in the minibuffer ahead of other hard-coded useful regexp-related values.
2145 More commands use `read-regexp' now to read their regexp arguments.
2149 *** New function `completion-table-with-quoting' to handle completion
2150 in the presence of quoting, such as file completion in shell buffers.
2152 *** New function `completion-table-subvert' to use an existing completion
2153 table, but with a different prefix.
2157 *** New error type and new function `user-error'.
2158 These do not trigger the debugger.
2160 *** New option `debugger-bury-or-kill', saying what to do with the
2161 debugger buffer when exiting debug.
2163 *** Set `debug-on-message' to enter the debugger when a certain
2164 message is displayed in the echo area. This can be useful when trying
2165 to work out which code is doing something.
2167 *** New var `inhibit-debugger', automatically set to prevent accidental
2168 recursive invocations.
2172 *** New command `fit-frame-to-buffer' adjusts the frame height to
2175 *** The command `fit-window-to-buffer' can adjust the frame height
2176 if the new option `fit-frame-to-buffer' is non-nil.
2178 *** New macro `with-temp-buffer-window', similar to
2179 `with-output-to-temp-buffer'.
2181 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2184 *** New option `switch-to-buffer-preserve-window-point' to restore a
2185 window's point when switching buffers.
2187 *** New display action alist entries `window-height' and `window-width'
2188 specify the size of new windows created by `display-buffer'.
2190 *** New display action alist entry `pop-up-frame-parameters', if
2191 non-nil, specifies frame parameters to give any newly-created frame.
2193 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2194 tells display action functions to avoid changing which frame is
2197 *** New display action alist entry `previous-window', if non-nil,
2198 specifies window to reuse in `display-buffer-in-previous-window'.
2200 *** New display action functions `display-buffer-below-selected',
2201 and `display-buffer-in-previous-window'.
2203 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2204 now accept a third argument to avoid choosing the selected window.
2206 *** Additional values recognized for option `window-combination-limit'.
2208 *** The following variables are obsolete, as they can be replaced by
2209 appropriate entries in the `display-buffer-alist' function introduced
2211 **** `dired-shrink-to-fit'
2212 **** `display-buffer-reuse-frames'
2213 **** `display-buffer-function'
2214 **** `special-display-buffer-names'
2215 **** `special-display-frame-alist'
2216 **** `special-display-function'
2217 **** `special-display-regexps'
2221 *** `current-time-string' no longer requires that its argument's year
2222 must be in the range 1000..9999. It now works with any year supported
2223 by the underlying C implementation.
2225 *** `current-time' now returns extended-format time stamps
2226 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2227 PSEC is typically a multiple of 1000 on current machines. Other
2228 functions that use this format, such as `file-attributes' and
2229 `format-time-string', have been changed accordingly. Old-format time
2230 stamps are still accepted.
2232 *** The format of timers in `timer-list' and `timer-idle-list' is now
2233 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2234 The PSECS slot is new, and uses picosecond resolution. It can be
2235 accessed via the new `timer--psecs' accessor.
2237 *** Last-modified time stamps in undo lists now are of the form
2238 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2242 *** Improved security when handling persistent objects:
2244 **** `eieio-persistent-read' now features optional arguments for specifying
2245 the class to load, as well as a flag stating whether subclasses are allowed;
2246 if provided, other classes will be rejected by the reader. For
2247 compatibility with existing code, if the class is omitted only a
2250 **** New specialized reader for pulling in classes and signaling errors
2251 without evaluation of suspicious code.
2253 **** All slots that contain objects must have a :type. Slots with lists
2254 of objects must use a new type predicate for a list of an object type.
2256 *** Support for `find-function' and similar utilities, through the addition
2257 of filename support to generated symbols.
2259 ** Floating point functions now always return special values like NaN,
2260 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2261 Previously, they returned NaNs on some platforms but signaled errors
2262 on others. The affected functions are acos, asin, tan, exp, expt,
2263 log, log10, sqrt, and mod.
2265 ** New fringe bitmap `exclamation-mark'.
2267 ** Miscellaneous changes to special forms and macros
2269 *** `defun' and `defmacro' are now macros rather than special forms.
2271 *** `kbd' is now a function rather than a macro.
2273 ** Miscellaneous new functions
2275 *** `set-temporary-overlay-map' sets up a temporary keymap that
2276 takes precedence over most other maps for a short while (normally one key).
2278 *** `autoloadp' tests if its argument is an autoloaded object.
2280 *** `autoload-do-load' performs the autoloading operation.
2282 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2284 *** `file-name-base' returns a file name sans directory and extension.
2286 *** `function-get' fetches a function property, following aliases.
2288 *** `posnp' tests if an object is a `posn'.
2290 *** `system-users' returns the user names on the system.
2292 *** `system-groups' returns the group names on the system.
2294 *** `tty-top-frame' returns the topmost frame of a text terminal.
2296 ** The following functions and variables are obsolete:
2297 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2298 *** `buffer-has-markers-at'
2299 *** `macro-declaration-function' (use `macro-declarations-alist')
2300 *** `window-system-version' (provides no useful information)
2301 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2302 *** `query-replace-interactive'
2303 *** `font-list-limit' (has had no effect since Emacs < 23)
2306 * Changes in Emacs 24.3 on Non-Free Operating Systems
2308 ** Cygwin builds can use the native MS Windows user interface.
2309 Pass `--with-w32' to configure. The default remains the X11 interface.
2311 ** Two new functions are available in Cygwin builds:
2312 `cygwin-convert-file-name-from-windows' and
2313 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2314 code to access the Cygwin file-name mapping machinery to convert
2315 between Cygwin and Windows-native file and directory names.
2317 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2318 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2319 `mouse-autoselect-window'.
2321 ** On MS Windows Vista and later Emacs now supports symbolic links.
2323 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2324 support for libxml2, even if its presence is detected.
2326 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2328 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2329 directories to the search path. You must add them yourself if you want them.
2332 * Changes in Emacs 24.2
2334 ** This is mainly a bug-fix release.
2337 * Installation Changes in Emacs 24.1
2339 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2340 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2341 also depend on Gtk+. You can disable them with --without-rsvg and
2344 ** Emacs can be compiled with GnuTLS support.
2345 This happens by default if a suitably recent version of the library is
2346 found at build time. To prevent this, use the configure option
2347 `--without-gnutls'. See below for GnuTLS features.
2349 ** Emacs can be compiled with SELinux support.
2350 This happens by default if a suitably recent version of the library is
2351 found at build time. To prevent this, use the configure option
2352 `--without-selinux'. See below for SELinux features.
2354 ** Emacs can be compiled with ImageMagick support.
2355 This happens by default if a suitably recent version of the library is
2356 found at build time. To prevent this, use the configure option
2357 `--without-imagemagick'. See below for ImageMagick features.
2358 This feature is not available for the Nextstep or MS ports.
2360 ** Emacs can be compiled with libxml2 support.
2361 This happens by default if a suitably recent version of the library is
2362 found at build time. To prevent this, use the configure option
2363 `--without-xml2'. See below for libxml2 features.
2365 ** By default, the installed Info and man pages are compressed.
2366 You can disable this by configuring --without-compress-info.
2368 ** New configure option --with-wide-int.
2369 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2370 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2373 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2374 These provide no new functionality, they just remove the need to edit
2375 lib-src/Makefile by hand in order to use the associated features.
2377 ** New configure option --enable-use-lisp-union-type.
2378 This is only useful for Emacs developers to debug certain types of bugs.
2379 This is not a new feature; only the configure flag is new.
2381 ** The standalone programs digest-doc and sorted-doc are removed.
2382 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2384 ** The standalone program `fakemail' is removed.
2385 If you need it, feedmail.el provides a superset of the functionality.
2388 * Startup Changes in Emacs 24.1
2390 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2391 command line arguments, and the EMACS_UNIBYTE environment variable, no
2392 longer have any effect. (They were declared obsolete in Emacs 23.)
2394 ** New command line option `--no-site-lisp' removes site-lisp directories
2395 from load-path. -Q now implies this. This option does not affect the
2396 EMACSLOADPATH environment variable (and hence has no effect for
2400 * Changes in Emacs 24.1
2404 *** Many packages now use the `completion-at-point' command,
2405 rather than implementing separate completion commands.
2407 *** `completion-at-point' now handles tags and semantic completion.
2409 *** Completion in a non-minibuffer now tries to detect the end of completion
2410 and pops down the *Completions* buffer accordingly.
2412 *** New option `completion-cycle-threshold' allows completion cycling.
2414 *** New option `completion-category-overrides' for overriding the
2415 default completion style in certain circumstances.
2417 *** New completion style `substring'.
2419 *** Completion of buffer names uses `substring' completion by default.
2421 *** The option `widget-complete-field' has been removed.
2425 *** The first time you try sending mail, Emacs asks for a mail method.
2426 This is implemented by a new default for `send-mail-function', which
2427 is `sendmail-query-once'. This offers to use the smtpmail package, or
2428 to use the old defaults relying on external mail facilities
2429 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2430 `mailclient-send-it' on Windows).
2432 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2433 transfers the report to your desktop's preferred mail client, if there
2434 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2437 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2438 and Mail mode changes
2440 ** Emacs server and client changes
2442 *** New option `server-port' specifies the port for TCP Emacs servers.
2444 *** New emacsclient argument -q/--quiet suppresses some status messages.
2446 *** New emacsclient argument --frame-parameters specifies the frame
2447 parameters of any newly-created graphical frame.
2449 *** If emacsclient shuts down due to Emacs signaling an error,
2450 its exit status is 1.
2452 *** New emacsclient argument --parent-id ID.
2453 This opens a client frame in parent X window ID, via XEmbed, similar
2454 to the --parent-id argument to Emacs.
2456 ** Internationalization changes
2458 *** Emacs now supports display and editing of bidirectional text.
2459 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2460 displayed in the correct visual order as expected by users of those
2461 scripts. The display reordering is a "full bidirectionality" class
2462 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2463 with no RTL text should look exactly the same as before.
2465 **** New buffer-local variable `bidi-display-reordering'.
2466 To disable display reordering in a buffer, change this to nil.
2468 **** New buffer-local variable `bidi-paragraph-direction'.
2469 If nil (the default), Emacs determines the base direction of each
2470 paragraph from its text, as specified by the UBA. Setting the value
2471 to `right-to-left' or `left-to-right' forces a base direction on each
2474 Paragraphs with right-to-left base direction are displayed starting at
2475 the right window edge.
2477 *** Enhanced support for characters with no glyphs in available fonts,
2478 or, on text terminals, characters that cannot be encoded by the
2479 terminal coding system. The new option `glyphless-char-display-control'
2480 specifies how to display them: as a hexadecimal code in a box, a thin
2481 1-pixel space, an empty box, etc.
2483 *** New input methods for Farsi and Bulgarian
2484 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2486 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2487 (U+2010 and U+2011).
2489 *** New Hebrew translation of the Emacs Tutorial.
2490 Type `C-u C-h t' to choose it in case your language setup doesn't
2491 automatically select it.
2493 ** An Emacs Lisp package manager is now included.
2494 This is a convenient way to download and install additional packages,
2495 from a package repository at http://elpa.gnu.org.
2497 *** M-x list-packages shows a list of packages, which can be
2498 selected for installation.
2500 *** New command `describe-package', bound to `C-h P'.
2502 *** By default, all installed packages are loaded automatically when
2503 Emacs starts up. To disable this, set `package-enable-at-startup' to
2504 nil. To specify the packages to load, customize `package-load-list'.
2506 ** Custom theme changes
2508 *** New command `M-x customize-themes', which provides a convenient
2509 interface for enabling and disabling Custom themes.
2511 *** New option `custom-theme-load-path' is the load path for themes.
2512 Emacs no longer looks for Custom themes in `load-path'. The default
2513 value of `custom-theme-load-path' says to look for themes in
2514 `custom-theme-directory', followed by a subdirectory of
2515 `data-directory' named "themes/", which contains a small selection of
2516 built-in Custom themes.
2518 *** New option `custom-safe-themes' records known-safe theme files.
2519 If a theme is not in this list, Emacs queries before loading it, and
2520 offers to save the theme to `custom-safe-themes' automatically. By
2521 default, all themes included in Emacs are treated as safe.
2523 ** Improved GTK integration
2525 *** GTK scroll-bars are now placed on the right by default.
2526 The function `set-scroll-bar-mode' can change this.
2528 *** GTK tool bars can have just text, just images or images and text.
2529 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2530 the default is taken from desktop settings.
2532 *** GTK tool bars can be placed on any edge of the frame.
2533 The frame-parameter tool-bar-position controls this. It takes the
2534 values top, left, right or bottom. The Options => Show/Hide menu has
2537 *** The default colors for selected text (the `region' face) are taken
2538 from the GTK theme when Emacs is built with GTK.
2540 *** Emacs uses GTK tooltips by default if built with GTK.
2541 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2543 ** Graphical interface changes
2545 *** On graphical displays, the mode-line no longer ends in dashes.
2546 Also, the first dash (which does not indicate anything) is just
2547 displayed as a space.
2549 *** `menu-bar-select-buffer-function' lets you choose another operation
2550 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2552 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2553 built with Xft. These fonts can be set via X resources, for example:
2554 Emacs.pane.menubar.font: Courier-12
2558 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2559 or if it receives a SIGINT signal in batch mode.
2561 *** `kill-emacs-hook' is now also run in batch mode.
2562 Third-party code which adds to `kill-emacs-hook' should check if they
2563 do the right thing in batch mode.
2565 ** Scrolling changes
2567 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2568 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2569 of buffer at first key-press (instead they move to top/bottom of buffer)
2570 when `scroll-error-top-bottom' is non-nil.
2572 *** New option `scroll-error-top-bottom' (see above).
2574 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2575 scroll a line instead of full screen.
2577 *** New property `scroll-command' should be set on a command's symbol to
2578 define it as a scroll command affected by `scroll-preserve-screen-position'.
2580 *** If you customize `scroll-conservatively' to a value greater than 100,
2581 Emacs will never recenter point in the window when it scrolls due to
2582 cursor motion commands or commands that move point (e.f., `M-g M-g').
2583 Previously, you needed to use `most-positive-fixnum' as the value of
2584 `scroll-conservatively' to achieve the same effect.
2586 *** "Aggressive" scrolling now honors the scroll margins.
2587 If you customize `scroll-up-aggressively' or
2588 `scroll-down-aggressively' and move point off the window, Emacs now
2589 scrolls the window so as to avoid positioning point inside the scroll
2592 ** Basic SELinux support has been added.
2593 This requires Emacs to be linked with libselinux at build time.
2595 *** Emacs preserves the SELinux file context when backing up.
2596 Also, the function `copy-file' has an extra optional argument for
2597 preserving SELinux context, and the return value of `backup-buffer'
2598 now includes the SELinux context.
2600 *** New functions `file-selinux-context' and `set-file-selinux-context'
2601 get and set the SELinux context of a file.
2605 *** `delete-by-moving-to-trash' now only affects commands that specify
2606 trashing. This avoids inadvertently trashing temporary files.
2608 *** Calling `delete-file' or `delete-directory' with a prefix argument
2609 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2611 ** File- and directory-local variable changes
2613 *** You can stop directory local vars from applying to subdirectories.
2614 Add an element (subdirs . nil) to the alist portion of any variables
2615 settings to indicate that the section should not apply to
2618 *** Directory local variables can apply to some file-less buffers.
2619 Affected modes include dired, vc-dir, and log-edit. For example,
2620 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2621 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2622 `hack-dir-local-variables-non-file-buffer' to support this.
2624 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2625 Instead, use "eval: (minor-mode 1)".
2627 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2628 to `inhibit-local-variables-regexps'. As the name suggests, it now
2629 applies to ALL file local variables, not just -*- lines. The
2630 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2635 *** The `quit-window' command now restores the last buffer displayed
2636 in the quitted window.
2638 *** Resizing an Emacs frame now preserves proportional window sizes,
2639 modulo restrictions like window minimum sizes and fixed-size windows.
2641 *** The behavior of `display-buffer' is now customizable in detail.
2643 **** New option `display-buffer-base-action' specifies a list of
2644 user-determined display "actions" (functions and optional arguments
2645 for choosing the displaying window).
2647 This takes precedence over the default display action, which is
2648 specified by `display-buffer-fallback-action'.
2650 **** New option `display-buffer-alist' maps buffer name regexps to
2651 display actions, taking precedence over `display-buffer-base-action'.
2653 *** New option `window-combination-limit'.
2654 The new option `window-combination-limit' allows to return the space
2655 obtained for resizing or creating a window more reliably to the window
2656 from which such space was obtained.
2658 *** New option `window-combination-resize'.
2659 The new option `window-combination-resize' allows to split a window that
2660 otherwise cannot be split because it's too small by stealing space from
2661 other windows in the same combination. Subsequent resizing or deletion
2662 of the window will resize all windows in the same combination as well.
2664 *** New option `frame-auto-hide-function' lets you choose between
2665 iconifying or deleting a frame when burying a buffer in a dedicated
2666 frame, or quitting a window showing a buffer in a frame of its own.
2668 *** New commands `maximize-window' and `minimize-window'.
2669 These maximize and minimize the size of a window within its frame.
2671 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2672 These functions allow to navigate through the live buffers that have
2673 been shown in a specific window.
2675 ** Minibuffer changes
2677 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2678 This is handy for minibuffer-only frames, and is also used for the feature
2679 where mouse-1 pops up *Messages*"', which can now easily be changed.
2681 *** Minibuffers set `truncate-lines' to nil.
2682 If you want to change the value to something else, you could use
2683 for example `minibuffer-setup-hook'.
2685 ** `auto-mode-case-fold' is now enabled by default.
2687 ** `backup-by-copying-when-mismatch' now defaults to t.
2689 ** New basic faces `error', `warning', `success'.
2690 These are used to highlight text indicating failure, caution or
2691 successful operation.
2693 ** New option `list-colors-sort' defines the color sort order
2694 for `list-colors-display'.
2696 ** The variable `focus-follows-mouse' now always defaults to nil.
2699 * Editing Changes in Emacs 24.1
2703 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2704 `isearch-yank-line'.
2706 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2707 `isearch-yank-kill'.
2709 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2711 ** New commands `count-words-region' and `count-words'.
2713 *** M-= is bound to `count-words-region', not `count-lines-region'.
2714 The `count-words-region' command, when called interactively, reports
2715 the number of lines, words, and characters in the region. It is a
2716 superset of the old `count-lines-region', which is now an obsolete
2719 ** The command `just-one-space' (M-SPC), if given a negative argument,
2720 also deletes newlines around point.
2724 *** New option `delete-active-region'.
2725 If non-nil, [delete] and DEL delete the region if it is active and no
2726 prefix argument is given. If set to `kill', those commands kill
2729 *** New command `delete-forward-char', bound to [delete].
2730 This is meant for interactive use, and obeys `delete-active-region'.
2731 The command `delete-char' does not obey `delete-active-region'.
2733 *** `delete-backward-char' is now a Lisp function.
2734 Apart from obeying `delete-active-region', its behavior is unchanged.
2735 However, the byte compiler now warns if it is called from Lisp; Lisp
2736 callers should use delete-char with a negative argument instead.
2738 *** The option `mouse-region-delete-keys' has been deleted.
2740 ** Selection changes.
2742 The default handling of clipboard and primary selections has been
2743 changed to conform with modern X applications. In short, most
2744 commands for killing and yanking text now use the clipboard, while
2745 mouse commands use the primary selection.
2747 In the following, we provide a list of these changes, followed by a
2748 list of steps to get the old behavior back if you prefer that.
2750 *** `select-active-regions' now defaults to t.
2751 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
2752 the kill ring. The selected text is put in the primary selection, if
2753 the system possesses a separate primary selection facility (e.g. X).
2755 **** `select-active-regions' also accepts a new value, `only'.
2756 This means to only set the primary selection for temporarily active
2757 regions (usually made by mouse-dragging or shift-selection);
2758 "ordinary" active regions, such as those made with C-SPC followed by
2759 point motion, do not alter the primary selection.
2761 **** `mouse-drag-copy-region' now defaults to nil.
2763 *** mouse-2 is now bound to `mouse-yank-primary'.
2764 This pastes from the primary selection, ignoring the kill-ring.
2765 Previously, mouse-2 was bound to `mouse-yank-at-click'.
2767 *** `x-select-enable-clipboard' now defaults to t on all platforms.
2769 *** `x-select-enable-primary' now defaults to nil.
2770 Thus, commands that kill text or copy it to the kill-ring (such as
2771 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2773 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
2774 exactly equivalent to M-w, C-w, and C-y respectively.
2776 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
2777 non-nil by default, as Windows does not support the primary selection
2778 between applications.
2780 *** To return to the previous behavior, do the following:
2782 **** Change `select-active-regions' to nil.
2783 **** Change `mouse-drag-copy-region' to t.
2784 **** Change `x-select-enable-primary' to t (on X only).
2785 **** Change `x-select-enable-clipboard' to nil.
2786 **** Bind `mouse-yank-at-click' to mouse-2.
2788 *** Support for X cut buffers has been removed.
2790 *** X clipboard managers are now supported.
2791 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
2793 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2794 in the current rectangle. With a prefix argument, this prompts for a
2795 number to count from and for a format string.
2797 ** `redisplay-dont-pause' now defaults to t.
2798 This makes Emacs feel more responsive to editing commands that arrive
2799 at high rate, e.g. if you lean on some key, because stopping redisplay
2800 in the middle (when this variable is nil) forces more expensive
2801 updates later on, and Emacs appears to be unable to keep up.
2803 ** The behavior of <TAB> for active regions in Text mode has changed.
2804 In Text and related modes, typing <TAB> (`indent-for-tab-command')
2805 when the region is active causes Emacs to indent all the lines in the
2806 region, aligning them with the line previous to the first line in the
2807 region (or with the left margin if there is no previous line).
2809 ** When `occur' is called with a prefix argument, matching strings are
2810 collected into the `*Occur*' buffer without line numbers. If there
2811 are parenthesized subexpressions in the specified regexp, `occur'
2812 reads replacement text that may contain \\& and \\N whose convention
2813 follows `replace-match'.
2816 * Changes in Specialized Modes and Packages in Emacs 24.1
2818 ** Archive Mode has basic support for browsing and updating 7z archives.
2822 *** BibTeX mode now supports biblatex.
2823 Use the variable `bibtex-dialect' to select different BibTeX dialects.
2824 `bibtex-entry-field-alist' is now an obsolete alias for
2825 `bibtex-BibTeX-entry-alist'.
2827 *** New command `bibtex-search-entries', bound to C-c C-a.
2829 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
2831 *** New variable `bibtex-search-entry-globally'.
2835 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
2837 *** The default browser used by the package is now the "xdg-open" program,
2838 on platforms that support it. This calls your desktop's preferred browser.
2842 *** Support for musical notes.
2844 *** Support for logarithmic units.
2846 *** No longer uses the tex prefix for TeX specific unit names when
2847 using TeX or LaTeX mode.
2849 *** New option to highlight selections using faces.
2851 *** `calc-histogram' has the option of using a vector to determine the bins.
2853 *** New "O" option prefix.
2855 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2857 ** Calendar, Diary, and Appt
2859 *** Diary entries can contain non-printing "comments".
2860 See the variable `diary-comment-start'.
2862 *** Appointments can specify their individual warning times.
2863 See the variable `appt-warning-time-regexp'.
2865 *** The function specified by `appt-disp-window-function' may be passed
2866 lists of arguments if multiple appointments are due at similar times.
2867 If you are using a custom function for this, you should update it.
2869 *** New function `diary-hebrew-birthday'.
2871 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2872 may no longer be nil, but must all be strings.
2874 *** The obsolete (since Emacs 22.1) method of enabling the appt
2875 package by adding `appt-make-list' to `diary-hook' has been removed.
2876 Use `appt-activate' instead.
2878 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
2879 appt-issue-message (use the function appt-activate)
2880 appt-visible/appt-msg-window (use the variable appt-display-format)
2882 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2883 view-diary-entries, list-diary-entries, show-all-diary-entries
2887 *** New feature to "guess" the style in an existing buffer.
2888 The main entry point is M-x c-guess.
2890 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2892 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
2893 Thus C-M-a will, by default, go to the beginning of the immediate function,
2896 *** "Macros with semicolons" can be registered for correct indentation.
2897 Where such a macro ends a line (no semicolon) the next statement is no longer
2898 parsed as a statement continuation.
2900 ** Comint and modes derived from it use the standard completion code.
2904 *** Compilation mode can be used without Font Lock mode.
2905 `compilation-parse-errors-function' is now obsolete.
2907 *** New variable `compilation-filter-start', which is bound while
2908 `compilation-filter-hook' runs. It records the start position of the
2909 text inserted by `compilation-filter'.
2911 *** `compilation-error-screen-columns' and `compilation-first-column'
2912 are obeyed in the editing buffer. So programming language modes can
2913 set them, whereas previously only the value in the *Compilation*
2918 *** Customize buffers now contain a search field.
2919 The search is performed using `customize-apropos'.
2920 To turn off the search field, set `custom-search-field' to nil.
2922 *** Options in customize group buffers start out hidden if not customized.
2923 Use the arrow to the left of the option name to toggle visibility.
2925 *** custom-buffer-sort-alphabetically now defaults to t.
2927 *** The color widget now has a "Choose" button, which allows you to
2928 choose a color via `list-colors-display'.
2932 *** It is now possible to access buses other than the default system
2935 *** The `dbus-register-method' and `dbus-register-property' functions
2936 optionally do not register names.
2938 *** The new function `dbus-register-service' registers a known service
2939 name on a D-Bus without also registering a property or a method.
2943 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2944 if called with a prefix argument, read a file name from the minibuffer
2945 instead of using the current buffer.
2947 *** The "dired local variables" feature of Dired-x is obsolete.
2948 The standard directory local variables feature replaces it.
2952 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2953 controlling attempts to autojoin a channel.
2955 *** New variable `erc-coding-system-precedence': If we use `undecided'
2956 as the server coding system, this variable will then be consulted.
2957 The default is to decode strings that can be decoded as utf-8 as
2958 utf-8, and do the normal `undecided' decoding for the rest.
2962 *** The default value of `eshell-directory-name' has changed
2963 to be an "eshell" directory in `user-emacs-directory'.
2964 The old "~/.eshell/" directory is still used if it exists, though.
2968 *** The M-x gdb command now uses the GDB Machine Interface protocol.
2969 It now supports multithread non-stop debugging and simultaneous
2970 debugging of several threads.
2974 *** RET (`image-toggle-animation') toggles animation, if applicable.
2975 Animation plays once, unless the option `image-animate-loop' is non-nil.
2979 *** New command M-x info-display-manual displays a named Info manual.
2980 If that manual is already visited in some Info buffer, it displays
2981 that buffer. (This is handy if you have many manuals in many *info*
2982 buffers, and don't remember the name of the buffer visiting the manual
2983 you want to consult.) Otherwise, it loads and displays the manual.
2985 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2986 This is for compatibility with the stand-alone Info reader program,
2987 and also because `Info-edit' is a rarely used command that is disabled
2990 ** Mail mode changes (not Message mode)
2992 *** New command M-x mail-add-attachment for adding MIME attachments
2994 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2995 (Its name is misleading, since it has nothing to do with MIME
2996 attachments.) The old name is now an obsolete alias to the new name.
2998 ** MH-E has been updated to MH-E version 8.3.1.
2999 See MH-E-NEWS for details.
3001 ** Modula-2 mode provides auto-indentation.
3003 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3005 ** nXML mode no longer binds C-RET to `nxml-complete'.
3006 Completion is now performed via `completion-at-point', bound to C-M-i
3007 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3008 default), this performs tag completion.
3010 ** Org mode has been updated to version 7.8.09.
3011 See ORG-NEWS for details.
3013 ** Prolog mode has been completely revamped, with lots of additional
3014 functionality such as more intelligent indentation, electricity,
3015 support for more variants, including Mercury, and a lot more.
3019 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3020 in the Rmail incoming message.
3022 *** The variable `rmail-message-filter' no longer has any effect.
3023 This change was made in Emacs 23.1 but was not advertised at the time.
3024 Try using `rmail-show-message-hook' instead.
3028 *** M-x shell prompts for the shell path name if the default directory
3029 is a remote file name and neither the environment variable $ESHELL nor
3030 the variable `explicit-shell-file-name' is set.
3032 *** TAB is now bound to the standard `completion-at-point' command,
3033 which now implements the pcomplete rules for shell command completion.
3037 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3038 if the mail server supports them. This uses either built-in GnuTLS
3039 support, or the starttls.el library. Customize `smtpmail-stream-type'
3042 *** The variable `smtpmail-auth-credentials' has been removed.
3043 By default, the information is now stored in the file ~/.authinfo.
3044 This was the default value of smtpmail-auth-credentials. If you had
3045 customized smtpmail-auth-credentials to a list of user names and
3046 passwords, those settings are not used. During your first connection
3047 to the smtp server, Emacs will prompt for the user name and password,
3048 and offer to save them to ~/.authinfo. Or you can manually copy the
3049 credentials to ~/.authinfo. For example, if you had
3051 (setq smtpmail-auth-credentials
3052 '(("mail.example.org" 25 "jim" "s!cret")))
3054 then the equivalent line in ~/.authinfo would be
3056 machine mail.example.org port 25 login jim password s!cret
3058 See the auth-source manual for more information, e.g. on encrypting
3059 the credentials file.
3061 *** The variable `smtpmail-starttls-credentials' has been removed.
3062 If you had that set, you need to put
3064 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3066 in your ~/.authinfo file instead.
3068 *** SMTPmail defaults to using the address in the From: header as the
3069 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3070 to the address you wish to use instead.
3074 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3075 and `sql-oracle-scan-on'.
3077 *** New options controlling prompting for login parameters.
3078 Each supported product has a custom variable `sql-*-login-params',
3079 which is a list of the parameters to be prompted for before a
3080 connection is established.
3082 *** The command `sql-product-interactive' now takes a prefix argument,
3083 which causes it to prompt for an SQL product.
3085 *** Product-specific SQL interactive commands now take prefix arguments.
3086 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3087 given a prefix argument, prompt for a name for the SQL interactive
3088 buffer. This reduces the need for calling `sql-rename-buffer'.
3090 *** SQL interactive modes suppress command continuation prompts, and
3091 replace tabs with spaces. The first change impacts multiple line SQL
3092 statements entered with C-j between each line, statements yanked into
3093 the buffer and statements sent with `sql-send-*' functions. The
3094 second prevents the MySQL and Postgres interpreters from listing
3095 object name completions when sent text via `sql-send-*' functions.
3097 *** New command `sql-connect' starts a predefined SQLi session,
3098 using the login parameters from `sql-connection-alist'.
3100 *** New "Save Connection" menu item in SQLi buffers.
3101 This gathers the login params specified for the SQLi session, if it
3102 was not started by a connection, and saves them as a new connection.
3104 *** New commands for listing database objects and details:
3105 sql-list-all and sql-list-table.
3107 *** An API for manipulating SQL product definitions has been added.
3111 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3115 *** New inline access method "ksu" (kerberized su).
3117 *** The following access methods are discontinued: "ssh1_old",
3118 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3120 *** The user option `remote-file-name-inhibit-cache' controls whether
3121 remote file attributes are cached for better performance.
3123 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3124 default value to "".
3126 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3127 for remote machines which support SELinux.
3129 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3130 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3131 the degree of parallelism.
3133 ** VC and related modes
3135 *** Support for pulling on distributed version control systems.
3136 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3137 supported (currently with Bzr, Git, and Mercurial), to update the
3138 current branch and working tree. A prefix argument means to prompt
3139 the user for specifics, e.g. a pull location.
3141 *** `vc-update' is now an alias for `vc-pull'.
3143 *** Support for merging on distributed version control systems.
3144 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3145 is supported (currently with Bzr, Git, and Mercurial), to merge
3146 changes from another branch into the current one. It prompts for
3147 specifics, e.g. a merge source.
3149 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3150 shows a diff while querying the user. It defaults to t.
3152 *** Log entries in some Log View buffers can be toggled to display a
3153 longer description by typing RET (log-view-toggle-entry-display).
3154 This is currently supported for Bzr, Git, and Mercurial (to support
3155 another backend, define a `log-view-expanded-log-entry-function').
3156 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3157 use this to display the full log entry for the revision at point.
3159 *** New command `vc-ediff' allows visual comparison of two revisions
3160 of a file similar to `vc-diff', but using ediff backend.
3162 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3163 this was not advertised at the time.
3165 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3166 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3167 this was not advertised at the time.
3173 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3175 *** partial-completion-mode (complete.el) is obsolete.
3176 You can get a comparable behavior with:
3177 (setq completion-styles '(partial-completion initials))
3178 (setq completion-pcm-complete-word-inserts-delimiters t)
3180 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3182 *** pgg is obsolete (use EasyPG instead).
3184 *** sregex.el is obsolete, since rx.el is a strict superset.
3186 *** s-region.el and pc-select.el are obsolete.
3187 They are superseded by shift-select-mode, enabled by default since 23.1.
3189 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3193 *** The Landmark game is now invoked with `landmark', not `lm'.
3194 Its functions and variables have been similarly renamed.
3196 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3197 (This interfered with cua-mode.)
3199 *** f90.el has some support for Fortran 2008 syntax.
3201 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3203 *** New command `nato-region' converts text to NATO phonetic alphabet.
3206 * New Modes and Packages in Emacs 24.1
3208 ** Occur Edit mode applies edits made in *Occur* buffers to the
3209 original buffers. It is bound to "e" in Occur mode.
3211 ** New global minor mode electric-pair-mode.
3212 When enabled, typing an open parenthesis automatically inserts the
3213 matching closing one.
3215 ** New global minor mode electric-indent-mode.
3216 When enabled, typing certain characters triggers reindentation.
3217 Major modes wishing to use this can set electric-indent-chars or
3218 electric-indent-functions.
3220 ** New global minor mode electric-layout-mode.
3221 When enabled, typing certain characters automatically inserts newlines.
3222 Major modes wishing to use this can set electric-layout-rules.
3224 ** tabulated-list.el provides a generic major mode for tabulated data,
3225 from which other modes can be derived.
3227 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3229 ** secrets.el is an implementation of the Secret Service API, an
3230 interface to password managers like GNOME Keyring or KDE Wallet. The
3231 Secret Service API requires D-Bus for communication. The command
3232 `secrets-show-secrets' offers a buffer with a visualization of the
3235 ** notifications.el provides an implementation of the Desktop
3236 Notifications API. It requires D-Bus for communication.
3238 ** soap-client.el supports access to SOAP web services from Emacs.
3239 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3241 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3243 ** New emacs-lock.el package.
3244 The previous version has been moved to obsolete/old-emacs-lock.el.
3245 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3246 against exiting Emacs and killing the buffer can be set separately.
3247 The mechanism for automatically turning off protection for buffers
3248 with dead inferior processes has been generalized.
3251 * Incompatible Lisp Changes in Emacs 24.1
3253 ** Passing a nil argument to a minor mode function call now ENABLES
3254 the minor mode unconditionally. This is so that you can write e.g.
3256 (add-hook 'text-mode-hook 'foo-mode)
3258 to enable foo-mode in Text mode buffers, removing the need for
3259 `turn-on-foo-mode' style functions. This affects all mode commands
3260 defined by `define-minor-mode'. If called interactively, the mode
3261 command still toggles the minor mode.
3263 ** The return value of `backup-buffer' has changed.
3264 It is now a list of three elements, where the second element is a list
3265 describing the original file's SELinux context. If Emacs or the
3266 system lacks SELinux support, the context list is (nil nil nil nil).
3267 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3269 ** `char-direction-table' and the `char-direction' function were deleted.
3270 They were buggy and inferior to the new support of bidirectional
3271 editing introduced in Emacs 24. If you need the bidirectional
3272 properties of a character, use `get-char-code-property' with the last
3273 argument `bidi-class'.
3275 ** `copy-directory' now copies the source directory as a subdirectory
3276 of the target directory, if the latter is an existing directory. The
3277 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3278 the contents directly into a pre-existing target directory.
3280 ** For mouse click input events in the text area, the Y pixel
3281 coordinate in the POSITION list now counts from the top of the text
3282 area, excluding any header line. Previously, it counted from the top
3285 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3286 been further reduced. Now a backquote not followed by a space is
3287 always treated as a "new-style" backquote. Please remove all
3288 "old-style" backquotes from your code. If your code uses backquotes
3289 as documented in the Elisp manual, and compiles without warning, then
3290 you have nothing to do in this regard. Code not following the
3291 appropriate conventions may fail to compile.
3293 The most common cause of trouble seems to be an old-style backquote
3294 followed by a newline. Another cause of trouble is vector notation
3295 for key sequence notation: instead of [(control ,)] and [(control ')],
3296 you should write [(control ?,)] and [(control ?')], which will work in
3299 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3300 was not advertised at the time. The function `custom-initialize-delay'
3301 replaced all known uses.
3303 ** `view-buffer' now treats special mode-class in the same way that
3304 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3305 major mode is special).
3307 ** Menu and tool bar changes
3309 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3310 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3311 With these alist entries omitted, `make-frame' checks the value of the
3312 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3313 a menu-bar or tool-bar, respectively. If the alist entries are added,
3314 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3316 *** The menu bar bindings's caches are not used any more.
3317 Use (where-is-internal <def> nil t) instead.
3319 ** Regions created by mouse dragging are now normal active regions,
3320 similar to those created by shift-selection (see Selection changes
3321 above). In previous Emacs versions, these regions were delineated by
3322 `mouse-drag-overlay'; that variable has been removed.
3324 ** The fourth argument of `filter-buffer-substring' has been removed.
3325 If you want to remove text properties from the final result, simply
3326 pass the result through substring-no-properties.
3328 ** cl.el no longer provides `cl-19'.
3330 ** The following obsolete functions and aliases have been removed
3331 (the appropriate new function is given in parentheses; "not needed"
3332 means you can just remove all calls to the function in question):
3334 *** `comint-kill-output' (`comint-delete-output')
3335 *** `decompose-composite-char' (`char-to-string')
3336 *** `outline-visible' (`outline-invisible-p')
3337 *** `internal-find-face' (`facep')
3338 *** `internal-get-face' (`facep and check-face')
3339 *** `frame-update-faces' (not needed)
3340 *** `frame-update-face-colors' (`frame-set-background-mode')
3341 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3342 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
3343 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3344 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3345 *** `x-make-font-unbold' (`make-face-unbold')
3346 *** `x-make-font-unitalic' (`make-face-unitalic')
3347 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3348 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3349 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3350 *** `char-bytes' (== 1)
3351 *** `isearch-return-char' (`isearch-printing-char')
3352 *** `make-local-hook' (not needed)
3353 *** `set-screen-height' (`set-frame-height')
3354 *** `set-screen-width' (`set-frame-width')
3356 ** The following obsolete variables and varaliases have been removed
3357 (the appropriate new variable is given in parentheses):
3359 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3360 *** `vc-header-alist' (`vc-BACKEND-header')
3361 *** `directory-sep-char' (== ?/)
3362 *** `font-lock-defaults-alist' (`font-lock-defaults')
3363 *** `e' (`float-e').
3365 ** The following obsolete files were removed:
3366 sc.el, x-menu.el, rnews.el, rnewspost.el
3368 ** The format of the finder-inf.el file has changed, since the Finder
3369 mechanism is now based on the package system. The variable
3370 `finder-package-info' is replaced by `package--builtins' and
3371 `finder-keywords-hash'.
3373 ** When generating autoloads, `update-directory-autoloads' no longer
3374 assumes every inspected file is in your `load-path'. It instead
3375 generates relative names according to the current `load-path'.
3378 * Lisp Changes in Emacs 24.1
3380 ** Code can now use lexical scoping by default instead of dynamic scoping.
3381 The `lexical-binding' variable enables lexical scoping for local
3382 variables. It is typically set via a file-local variable in the first
3383 line of the file, in which case it applies to all the code in that
3386 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3387 binding instead of the old dynamic binding mode.
3389 *** Lexically scoped interpreted functions are represented with a new form
3390 of function value which looks like (closure ENV ARGS &rest BODY).
3392 *** New macro `letrec' to define recursive local functions.
3394 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3395 So do `defcustom' and other forms that call `defvar' as a subroutine.
3397 *** New function `special-variable-p' to check whether a variable is
3398 declared as dynamically bound.
3400 *** The form ((lambda ...) ...) is deprecated.
3402 ** An Emacs Lisp testing tool is now included.
3403 Emacs Lisp developers can use this tool to write automated tests for
3404 their code. See the ERT info manual for details.
3406 ** Changes for bidirectional display and editing
3408 *** New function `current-bidi-paragraph-direction'.
3409 This returns the base direction of the paragraph at point.
3411 *** New function `bidi-string-mark-left-to-right'.
3412 Given a string containing characters from right-to-left scripts, this
3413 function returns another string which can be safely inserted into a
3414 buffer, such that any following text will be always displayed to the
3415 right of that string. (This works by appending an invisible Unicode
3416 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3418 This is useful when the buffer has overall left-to-right paragraph
3419 direction and you need to insert a string whose contents are not known
3420 in advance, without disrupting the layout of the line.
3424 *** Window tree functions are accessible in Elisp.
3425 Functions are provided to return the parent, siblings or child windows
3426 of any window including internal windows (windows not associated with a
3427 buffer) in the window tree.
3429 **** New function `window-valid-p' gives non-nil for live and internal
3432 **** Window manipulation can deal with internal windows.
3433 Many window handling functions like `split-window', `delete-window', or
3434 `delete-other-windows' as well as the window resizing functions can now
3435 act on any window including internal ones.
3437 *** window-total-height/-width vs window-body-height/-width.
3438 The function `window-height' has been renamed to `window-total-height'
3439 and `window-width' has been renamed to `window-body-width'. The old
3440 names are provided as aliases. Two new functions `window-total-width'
3441 and `window-body-height' are provided.
3443 *** Window parameters specific to window handling functions.
3444 For each window you can specify a parameter to override the default
3445 behavior of a number of functions like `split-window', `delete-window'
3446 and `delete-other-windows'. The variable `ignore-window-parameters'
3447 allows to ignore processing such parameters.
3449 *** New semantics of third argument of `split-window'.
3450 The third argument of `split-window' has been renamed to SIDE and can be
3451 set to any of the values 'below, 'right, 'above, or 'left to make the
3452 new window appear on the corresponding side of the window that shall be
3453 split. Any other value of SIDE will cause `split-window' to split the
3454 window into two side-by-side windows as before.
3456 *** Window resizing functions.
3457 A new standard function for resizing windows called `window-resize' has
3458 been introduced. This and all other functions for resizing windows no
3459 longer delete any windows when they become too small.
3461 *** Deleting the selected window now selects the most recently selected
3462 live window on that frame instead.
3464 *** `adjust-window-trailing-edge' adjustments.
3465 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3466 is able to resize other windows if a window adjacent to the trailing
3467 edge cannot be shrunk any more. This makes its behavior more similar to
3468 that of Emacs 21 without compromising, however, its inability to delete
3469 windows which was introduced in Emacs 22.
3471 *** Window-local buffer lists.
3472 Windows now have local buffer lists. This means that removing a buffer
3473 from display in a window will preferably show the buffer previously
3474 shown in that window with its previous window-start and window-point
3475 positions. This also means that the same buffer may be automatically
3476 shown twice even if it already appears in another window.
3478 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3479 which if non-nil requires the buffer to be displayed in the currently
3480 selected window, signaling an error otherwise. If nil, another window
3481 can be used, e.g. if the selected one is strongly dedicated.
3483 *** `split-window-vertically' and `split-window-horizontally' renamed
3484 to `split-window-below' and `split-window-right' respectively.
3485 The old names are kept as aliases.
3489 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3490 named ACTION, and takes a display action of the same form as
3491 `display-buffer-base-action' (see Changes, above). A non-nil,
3492 non-list value is treated specially, as the old meaning.
3494 **** New variable `display-buffer-overriding-action'.
3496 **** The procedure of `display-buffer' etc. to choose a window is
3497 determined by combining `display-buffer-overriding-action',
3498 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3499 and `display-buffer-fallback-action'. The second and fourth of these
3500 are user-customizable variables.
3502 See the docstring of `display-buffer' for details.
3504 *** New functions `window-state-get' and `window-state-put'.
3505 These functions allow to save and restore the state of an arbitrary
3506 frame or window as an Elisp object.
3510 *** New variable `completion-extra-properties' used to specify extra
3511 properties of the current completion:
3512 - :annotate-function, same as the old completion-annotate-function.
3513 - :exit-function, function to call after completion took place.
3515 *** Functions on `completion-at-point-functions' can return any of the
3516 properties valid for `completion-extra-properties'.
3518 *** `completion-annotate-function' is obsolete.
3520 *** New `metadata' method for completion tables. The metadata thus returned
3521 can specify various details of the data returned by `all-completions':
3522 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3523 used to select a style in completion-category-overrides.
3524 - `annotation-function' to add annotations in *Completions*.
3525 - `display-sort-function' to specify how to sort entries in *Completions*.
3526 - `cycle-sort-function' to specify how to sort entries when cycling.
3528 *** `minibuffer-local-filename-must-match-map' is not used any more.
3529 Instead, the bindings in `minibuffer-local-filename-completion-map'
3530 are combined with `minibuffer-local-must-match-map'.
3532 *** New variable `completing-read-function' allows overriding the
3533 behavior of `completing-read'.
3535 ** `glyphless-char-display' can now distinguish between graphical and
3536 text terminal display, via a char-table entry that is a cons cell.
3538 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3539 Instead, the offending function is removed.
3543 *** New function `run-hook-wrapped' for running an abnormal hook by
3544 passing the hook functions as arguments to a "wrapping" function.
3545 Like `run-hook-with-args-until-success', it stops at the first
3546 non-nil return value.
3548 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3549 set of "wrapping" filters, similar to around advice.
3550 (A version of this macro was actually added in Emacs 23.2 but was not
3551 advertised at the time.)
3555 *** New macro `condition-case-unless-debug' (this was actually added in
3556 Emacs 23.1 as condition-case-no-debug, but not advertised)
3558 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3560 *** Variable `stack-trace-on-error' removed.
3562 *** The debugger can now "continue" from an error, which means it will
3563 jump to the error handler as if the debugger had not been invoked
3564 instead of jumping all the way to the top-level.
3566 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3567 This can be useful when `inhibit-quit' is set.
3569 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3570 named Emacs server instances.
3572 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3573 to redirect STDOUT to a file.
3575 ** The function `format-time-string' now supports the %N directive,
3576 for higher-resolution time stamps.
3578 ** New input reading functions
3580 *** New function `read-char-choice' reads a restricted set of
3581 characters, discarding any inputs not inside the set.
3583 *** The command `read-color' now requires a match for a color name
3584 or RGB triplet, instead of signaling an error if the user provides
3587 **** `facemenu-read-color' is now an alias for `read-color'.
3589 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3590 The variable is now used to load all kind of supported dynamic libraries,
3591 not just image libraries. The previous name is still available as an
3594 ** Syntax parsing changes
3596 *** New variable `syntax-propertize-function'.
3597 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3598 This allows syntax-table properties to be set independently from font-lock:
3599 just call syntax-propertize to make sure the text is propertized.
3600 Together with this new variable come a new hook
3601 syntax-propertize-extend-region-functions, as well as two helper functions:
3602 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3603 as-is; and syntax-propertize-rules which provides a new way to specify
3606 *** Syntax tables support a new "comment style c" additionally to style b.
3608 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3610 ** frame-local variables cannot be let-bound any more.
3612 ** Major and minor mode changes
3614 *** `set-auto-mode' now respects mode: local variables at the end of files,
3615 as well as those in the -*- line.
3617 *** `prog-mode' is a new major mode from which programming modes
3620 **** `prog-mode-hook' can be used to enable features for programming
3621 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3622 on-the-fly spell checking for comments and strings.
3624 *** New hook `change-major-mode-after-body-hook', run by
3625 `run-mode-hooks' just before any other mode hooks.
3627 *** Enabled globalized minor modes can be disabled in specific major modes.
3628 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3629 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3631 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3633 ** File-handling changes
3635 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3636 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3637 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3638 argument is supplied (see Trash changes, above).
3640 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3642 ** Tool-bars can display separators.
3643 Tool-bar separators are handled like menu separators in menu-bar maps,
3644 i.e. via menu entries of the form `(menu-item "--")'.
3648 *** Animated images support (currently animated gifs only).
3650 **** `image-animated-p' returns non-nil if an image can be animated.
3652 **** `image-animate' animates a supplied image spec.
3654 **** `image-animate-timer' returns the timer object for an image that
3657 *** `image-extension-data' has been renamed to `image-metadata'.
3658 The old name is an obsolete alias to the new one.
3660 *** Image mode can view any image type that ImageMagick supports.
3661 This requires Emacs to be built with ImageMagick support.
3663 **** New function `imagemagick-types', defined if ImageMagick support
3664 is enabled, returns a list of image file extensions that your
3665 ImageMagick installation supports.
3667 **** New function `imagemagick-register-types' enables ImageMagick
3668 image types in Image mode and in `create-image' and other helper
3671 **** New option `imagemagick-types-inhibit' excludes certain
3672 ImageMagick image types from `imagemagick-register-types'.
3674 **** With ImageMagick support, there are extra Image mode commands to
3675 resize and rotate images: `image-transform-fit-to-height',
3676 `image-transform-fit-to-width', `image-transform-set-rotation', and
3677 `image-transform-set-scale'.
3679 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3680 passes it to the mail user agent function. This argument specifies an
3681 action for returning to the caller after finishing with the mail. For
3682 example, this is used by Rmail to optionally delete a mail window.
3684 ** XML and HTML parsing
3685 If Emacs is compiled with libxml2 support, there are two new
3686 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3687 and `libxml-parse-xml-region' (which parses XML). Both return an
3688 Emacs Lisp parse tree.
3690 ** Networking and encryption changes
3692 *** `open-network-stream' can now be used to open an encrypted stream.
3693 It now accepts an optional `:type' parameter for initiating a TLS
3694 connection, directly or via STARTTLS. To do STARTTLS, additional
3695 parameters (`:end-of-command', `:success', `:capabilities-command')
3696 must also be supplied.
3698 *** New library gnutls.el.
3699 The new function `gnutls-available-p' returns non-nil if Emacs is
3700 built with GnuTLS support. The main entry points are
3701 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3702 these functions through `open-network-stream', because that can
3703 upgrade connections through STARTTLS opportunistically or use plain
3704 SSL, depending on your needs. For debugging, set `gnutls-log-level'
3707 *** New primitive `secure-hash' that supports many secure hash algorithms:
3708 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3709 sha1.el has been removed. The `sha1' feature is provided by default.
3713 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3715 ** Progress reporters can now "spin".
3716 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3717 now be nil, or omitted. This makes a "non-numeric" reporter. Each
3718 time you call `progress-reporter-update' on that progress reporter,
3719 with a nil or omitted VALUE argument, the reporter message is
3720 displayed with a "spinning bar".
3722 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
3723 being reverted, even if the buffer has a local `revert-buffer-function'.
3725 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3726 If delayed-warnings-list is non-nil, the command loop calls
3727 `delayed-warnings-hook' after `post-command-hook'. At present, this
3728 is only used by Emacs on some platforms to display warnings during
3729 startup, which might otherwise not be noticed. This uses the
3730 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
3732 ** rx.el has a new `group-n' construct for explicitly numbered groups.
3734 ** New function `make-composed-keymap' that constructs a new keymap
3735 from multiple input maps. You can use this to make a keymap that
3736 inherits from multiple maps, eg:
3737 (set-keymap-parent newmap (make-composed-keymap othermap parent))
3739 ** New function `string-prefix-p'.
3740 (This was actually added in Emacs 23.2 but was not advertised at the time.)
3742 ** New reader macro ## that stands for the empty symbol.
3743 This means that the empty symbol can now be read back. Also, #: by itself
3744 (when not immediately followed by a possible symbol character) stands for
3745 an empty uninterned symbol.
3747 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
3749 ** The following functions and variables are obsolete:
3751 *** `tooltip-use-echo-area' is obsolete.
3752 Rather than setting this to t, disable Tooltip mode instead.
3754 *** buffer-substring-filters is obsolete.
3755 Use `filter-buffer-substring-functions' instead.
3757 *** `byte-compile-disable-print-circle' is obsolete.
3759 *** `deferred-action-list' and `deferred-action-function' are obsolete.
3760 Use `post-command-hook' instead.
3762 *** `font-lock-maximum-size' is obsolete.
3765 * Changes in Emacs 24.1 on Non-Free Operating Systems
3767 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
3768 and also when HOME is set to C:\ by default.
3770 ** New configure.bat options
3772 *** --enable-checking builds Emacs with extra runtime checks.
3774 *** --distfiles specifies files to be included in binary distribution.
3776 *** --without-gnutls disables automatic GnuTLS detection.
3778 *** --lib for general library linkage, works with the USER_LIBS build variable.
3780 ** New make target `dist' to create binary distribution for MS Windows.
3782 ** The Lisp function `w32-default-color-map' is now obsolete.
3783 (It is only used internally in the Emacs C code.)
3785 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3786 reappear on mouse-over. (Requires OS X 10.6 or later.)
3788 ** On Mac OS X, dragging a file into Emacs visits the file, like on
3789 other platforms, rather than inserting its contents into the buffer.
3792 ----------------------------------------------------------------------
3793 This file is part of GNU Emacs.
3795 GNU Emacs is free software: you can redistribute it and/or modify
3796 it under the terms of the GNU General Public License as published by
3797 the Free Software Foundation, either version 3 of the License, or
3798 (at your option) any later version.
3800 GNU Emacs is distributed in the hope that it will be useful,
3801 but WITHOUT ANY WARRANTY; without even the implied warranty of
3802 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3803 GNU General Public License for more details.
3805 You should have received a copy of the GNU General Public License
3806 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
3811 paragraph-separate: "[
\f]*$"