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 specially.
48 ** Directories passed to configure option `--enable-locallisppath' are
49 no longer created during installation.
51 ** Emacs can be compiled with zlib support.
52 If this library is present (which it normally is on most systems), the
53 function `zlib-decompress-region' becomes available, which can
54 decompress gzip- and zlib-format compressed data.
57 ** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
58 This requires pkg-config to be available at configure time.
61 * Startup Changes in Emacs 24.4
64 ** When initializing `load-path', an empty element in the EMACSLOADPATH
65 environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
66 "/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
67 load-path (the one that would have been used if EMACSLOADPATH was unset).
68 This makes it easier to _extend_ the load-path via EMACSLOADPATH
69 (previously, EMACSLOADPATH had to specify the complete load-path,
70 including the defaults). (In older versions of Emacs, an empty element
71 was replaced by ".", so use an explicit "." now if that is what you want.)
74 ** The -L option, which normally prepends its argument to load-path,
75 will instead append, if the argument begins with `:' (or `;' on MS Windows;
76 i.e., `path-separator').
79 ** If you use either site-load.el or site-init.el to customize the dumped
80 Emacs executable, any changes to `load-path' that these files make
81 will no longer be present after dumping. To affect a permanent change
82 to `load-path', use the `--enable-locallisppath' option of `configure'.
85 ** The user option `initial-buffer-choice' can now specify a function
86 to set up the initial buffer.
89 * Changes in Emacs 24.4
92 ** New option `gnutls-verify-error', if non-nil, means that Emacs
93 should reject SSL/TLS certificates that GnuTLS determines as invalid.
94 (This option defaults to nil at present, but this is expected to change
98 ** Emacs now supports menus on text-mode terminals.
99 If the terminal supports a mouse, clicking on the menu bar, or on
100 sensitive portions of the mode line or header line, will drop down the
101 menu defined at that position. Likewise, clicking C-mouse-2 or
102 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
105 If the text terminal does not support a mouse, you can activate the
106 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
108 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
109 customize the option `tty-menu-open-use-tmm' to a non-nil value.
110 (Typing M-` will always invoke `tmm-menubar', even if
111 `tty-menu-open-use-tmm' is nil.)
114 ** The *Messages* buffer is created in `messages-buffer-mode',
115 a new major mode, with read-only status. Any code that might create
116 the *Messages* buffer should call the function `messages-buffer' to do
117 so and set up the mode.
119 ** Emacs now supports ACLs (access control lists).
121 *** Emacs preserves the ACL entries of files when backing up.
123 *** New functions `file-acl' and `set-file-acl' get and set the ACL
124 entries of a file. On GNU/Linux, the POSIX ACL interface is used via
125 libacl. On MS-Windows, the NT Security APIs are used to emulate the
126 POSIX ACL interfaces.
128 ** Multi-monitor support has been added.
130 *** New functions `display-monitor-attributes-list' and
131 `frame-monitor-attributes' can be used to obtain information about
132 each physical monitor on multi-monitor setups.
134 *** The functions `display-pixel-width' and `display-pixel-height' now
135 behave consistently among the platforms: they return the pixel width
136 or height for all physical monitors associated with the given display
137 as if they were on X11. To get information for each physical
138 monitor, use the new functions above. Similar notes also apply to
139 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
140 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
143 ** The cursor stops blinking after 10 blinks (by default) on X and NS.
144 You can change the default by customizing `blink-cursor-blinks'.
147 ** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
148 This affects View mode, etc.
153 *** The command `apropos-variable' is renamed to `apropos-user-option'.
154 `apropos-user-option' shows all user options while `apropos-variable'
155 shows all variables. When called with a universal prefix argument,
156 the two commands swap their behaviors. When `apropos-do-all' is
157 non-nil, they output the same results.
160 *** The key `?' now describes prefix bindings, like `C-h'.
162 *** The command `describe-function' has been extended for EIEIO.
163 Running it on constructors will show a full description of the
164 generated class. For generic functions, it will show all
165 implementations together with links to the source. The old commands
166 `describe-class', `describe-constructor' and `describe-generic' were
170 *** The function `quail-help' is no longer an interactive command.
171 Use `C-h C-\' (`describe-input-method') instead.
176 *** ImageMagick images now support the :max-width and :max-height keywords.
179 *** When using `create-image' with image data, you can pass a :format
180 attribute (via the property-list argument) in order to help
181 ImageMagick detect the image type. The value should be a MIME
182 content-type that is found in the new variable `image-format-suffixes'.
184 ** Frame and window changes
187 *** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
188 bound to <f11> and M-<f10>, respectively.
190 *** New command `frameset-to-register' is now bound to `C-x r f', replacing
191 `frame-configuration-to-register'. It offers similar functionality,
192 plus enhancements like the ability to restore deleted frames. The
193 command `frame-configuration-to-register' still exists, but is unbound.
196 *** New hooks `focus-in-hook', `focus-out-hook'.
197 These are normal hooks run when an Emacs frame gains or loses input focus.
200 *** `split-window' is now a non-interactive function, not a command.
201 As a command, it was a special case of `C-x 2' (`split-window-below'),
202 and as such superfluous. After being reimplemented in Lisp, its
203 interactive form was mistakenly retained.
206 *** New option `scroll-bar-adjust-thumb-portion'.
207 Available only on X, this option allows to control over-scrolling
208 using the scroll bar (i.e. dragging the thumb down even when the end
209 of the buffer is visible).
211 ** Lisp evaluation changes
213 *** `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' in Lisp Interaction mode) can take a
219 zero prefix argument. This disables truncation of lists in the output,
220 equivalent to setting `(eval-expression-)print-length' and
221 `(eval-expression-)print-level' to nil. Additionally, it causes integers
222 to be printed in other formats (octal, hexadecimal, and character).
224 *** New hook `eval-expression-minibuffer-setup-hook' run by
225 `eval-expression' on entering the minibuffer.
228 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
231 ** `cache-long-line-scans' has been renamed to `cache-long-scans'
232 because it affects caching of paragraph scanning results as well.
233 Also, it is now enabled by default.
236 ** The option `set-mark-default-inactive' has been deleted.
237 This unfinished feature was introduced by accident in Emacs 23.1;
238 simply disabling Transient Mark mode does the same thing.
240 ** The default value of `comment-use-global-state' is now t,
241 and this variable has been marked obsolete.
244 ** `emacs-bzr-version' has been renamed to `emacs-repository-version',
245 and works for git too, if you fetch the repository notes.
247 ** `read-regexp-defaults-function' defines a function to provide default
248 values for reading regexps by commands like `rgrep', `lgrep' `occur',
249 `highlight-regexp', etc. You can customize this to specify a function
250 that provides a default value from the regexp last history element,
251 or from the symbol found at point.
254 ** New option `load-prefer-newer' affects how the `load' function chooses
255 the file to load. If this is non-nil, then when both .el and .elc
256 versions of a file exist, and the caller did not explicitly specify
257 which one to load, then the newer file is loaded. The default, nil,
258 means to always load the .elc file.
261 * Editing Changes in Emacs 24.4
263 ** Indentation changes
266 *** The behavior of `C-x TAB' (`indent-rigidly') has changed.
267 When invoked without a prefix argument, it now activates a transient
268 mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
269 the text indentation in the region. Typing any other key resumes
270 normal editing behavior.
272 *** `electric-indent-mode' is enabled by default.
275 *** `tab-stop-list' is now implicitly extended to infinity by repeating
276 the last step. Its default value is changed to nil, which means a tab
277 stop every `tab-width' columns.
280 ** New command `cycle-spacing' acts like a smarter `just-one-space'.
281 When called in succession, it cycles between spacing conventions:
282 one space, no spaces, original spacing.
285 ** The new function `fill-single-char-nobreak-p' can stop fill from breaking
286 a line after a one-letter word, which is an error in some typographical
287 conventions. To use it, add it to the `fill-nobreak-predicate' hook.
290 ** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
292 ** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
293 Most commands are still unaware of it, but kill/yank do work on the rectangle.
296 ** New option `visual-order-cursor-movement'.
297 If this is non-nil, cursor motion with arrow keys will follow the
298 visual order of characters on the screen: <left> always moves to the
299 left, <right> always moves to the right, disregarding the surrounding
300 bidirectional context.
305 *** All interactive commands that read a register (`copy-to-register', etc.)
306 now display a temporary window after `register-preview-delay' seconds
307 that summarizes existing registers. To disable this, set that option to nil.
308 Interactive commands that read registers and want to make use of this
309 should use `register-read-with-preview' to read register names.
312 *** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
315 *** New command `C-x r f' (`frameset-to-register').
316 See Changes in Emacs 24.4, above.
319 ** New command `delete-duplicate-lines'.
320 This searches the region for identical lines, and removes all but one
321 copy of each repeated line. The lines need not be sorted.
324 * Changes in Specialized Modes and Packages in Emacs 24.4
327 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
329 ~/.emacs.d/timelog replaces ~/.timelog
330 ~/.emacs.d/vip replaces ~/.vip
331 ~/.emacs.d/viper replaces ~/.viper
332 ~/.emacs.d/ido.last replaces ~/.ido.last
333 ~/.emacs.d/kkcrc replaces ~/.kkcrc
334 ~/.emacs.d/quickurls replaces ~/.quickurls
335 ~/.emacs.d/idlwave/ replaces ~/.idlwave/
336 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
337 ~/.emacs.d/places replaces ~/.emacs-places
338 ~/.emacs.d/shadows replaces ~/.shadows
339 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
340 ~/.emacs.d/strokes replaces ~/.strokes
341 ~/.emacs.d/notes replaces ~/.notes
342 ~/.emacs.d/type-break replaces ~/.type-break
343 Also the following files used by the now obsolete otodo-mode.el:
344 ~/.emacs.d/todo-do replaces ~/.todo-do
345 ~/.emacs.d/todo-done replaces ~/.todo-done
346 ~/.emacs.d/todo-top replaces ~/.todo-top
348 ** Backtrace and debugger
350 *** The Lisp debugger's `e' command now includes the lexical environment
351 when evaluating the code in the context at point. Hence, it now lets
352 you access lexical variables.
355 *** New command `v' (`debugger-toggle-locals') displays local vars.
357 *** New minor mode `jit-lock-debug-mode' lets you use the debuggers on
358 code run via JIT Lock.
361 ** Battery information can now be retrieved from BSD's `apm' utility.
364 ** In the Buffer Menu, `M-s a C-o' shows matches for a regexp in marked buffers.
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.
385 *** Calc by default now uses the Gregorian calendar for all dates, and
386 uses January 1, 1 AD as its day number 1. Previously Calc used the
387 Julian calendar for dates before September 14, 1752, and it used
388 December 31, 1 BC as its day number 1; the new scheme is more
389 consistent with Calendar's calendrical system and day numbering.
392 *** The new option `calc-gregorian-switch' lets you configure if
393 (and when) Calc switches from the Julian to 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 mode line.
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 that open new scope.
421 For example, this enables parsing of macros that open new namespaces.
423 **** Support for 'this' pointer in inline member functions in C++.
428 *** New macro `cl-tagbody'.
429 This executes statements while allowing for control transfer to labels.
432 *** letf is now just an alias for cl-letf.
436 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
437 Hence, you can now enable it independently from those modes, and from
438 `transient-mark-mode'.
441 *** `cua-highlight-region-shift-only' is now obsolete.
442 You can disable `transient-mark-mode' to get the same result.
444 *** CUA's rectangles can now be used via `cua-rectangle-mark-mode'.
449 *** Support for completion, ElDoc, and Flycheck has been added.
452 *** The current CFEngine syntax is parsed from "cf-promises -s json".
453 There is a fallback syntax available if you don't have cf-promises or
454 if your version doesn't support that option. See option `cfengine-cf-promises'.
457 ** Delete Selection mode can now be used without Transient Mark mode.
462 *** By default, the desktop is now auto-saved after `desktop-auto-save-timeout'.
463 To disable this, customize that option to nil (or zero).
465 *** `desktop-restore-frames', enabled by default, allows saving and
466 restoring the frame/window configuration (frameset). Additional options
467 `desktop-restore-in-current-display', `desktop-restore-reuses-frames'
468 and `desktop-restore-forces-onscreen' offer further customization.
471 ** New Dired minor mode `dired-hide-details-mode' toggles whether details,
472 such as file ownership or permissions, are visible.
475 ** You can enable ElDoc inside the `eval-expression' minibuffer with:
476 (add-hook 'eval-expression-minibuffer-setup-hook 'eldoc-mode)
477 The results display in the mode line.
479 ** Electric Pair mode
481 *** New option `electric-pair-preserve-balance', enabled by default.
482 If non-nil, pairing/skipping only kicks in when that help the balance
483 of parentheses and quotes, i.e. the buffer should end up at least as
486 You can further control this behavior by adjusting the predicates
487 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
489 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
490 In `electric-pair-mode', the commands `backward-delete-char' and
491 `backward-delete-char-untabify' are now bound to electric variants
492 that delete the closer when invoked between adjacent pairs.
494 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
495 In `electric-pair-mode', inserting a newline between adjacent pairs
496 opens an extra newline after point, which is indented if
497 `electric-indent-mode' is also set.
499 *** New option `electric-pair-skip-whitespace', enabled by default.
500 This controls if skipping over closing delimiters should jump over any
501 whitespace slack. Setting it to `chomp' makes it delete this
502 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
504 *** New variables control the pairing in strings and comments.
505 You can customize `electric-pair-text-pairs' and
506 `electric-pair-text-syntax-table' to tweak pairing behavior inside
507 strings and comments.
509 ** New EPA option `epa-mail-aliases'.
510 You can set this to a list of alias expansions for keys to use
511 in `epa-mail-encrypt'.
513 If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
514 that means: when one of the recipients of the message being encrypted
515 is `foo@bar.com', encrypt the message for `foo@hello.org' instead.
517 If one element of the variable's value is ("foo@bar.com"),
518 that means: when one of the recipients of the message being encrypted
519 is `foo@bar.com', ignore that name as regards encryption.
520 This is useful to avoid a query when you have no key for that name.
523 ** New ERC option `erc-accidental-paste-threshold-seconds'.
524 If set to a number, this can be used to avoid accidentally pasting large
525 amounts of data into the ERC input.
528 ** New ERT macro `skip-unless' allows skipping ERT tests.
529 See the ERT manual for details.
534 *** `eshell' now supports visual subcommands and options.
535 Eshell has been able to handle "visual" commands (interactive,
536 non-line oriented commands such as top that require display
537 capabilities not provided by eshell) by running them in an Emacs
538 terminal emulator. See `eshell-visual-commands'.
540 This feature has been extended to subcommands and options that make a
541 usually line-oriented command a visual command. Typical examples are
542 "git log" and "git <command> --help", which display their output in a
543 pager by default. See `eshell-visual-subcommands' and
544 `eshell-visual-options'.
547 *** New Eshell-Tramp module.
548 External su and sudo commands are now the default; the internal,
549 Tramp-using variants can still be used by enabling the eshell-tramp
553 ** New F90 mode option `f90-smart-end-names'.
555 ** Icomplete is a bit more like Ido.
557 *** Key bindings to navigate through and select the completions.
559 *** The icomplete-separator is customizable, and its default has changed.
561 *** Removed `icomplete-show-key-bindings'.
563 *** Icomplete-mode by defaults applies to all forms of minibuffer completion.
564 (setq icomplete-with-completion-tables '(internal-complete-buffer))
565 will revert to the old behavior.
570 *** An Ido user manual is now included.
573 *** The option `ido-use-virtual-buffers' can now take the value `auto'.
574 This means to use virtual buffers if the current ido input does not match
578 *** The variable `ido-decorations' can optionally have two new elements,
579 which are the brackets to use around the sole remaining completion.
584 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
585 visit the next image file and the previous image file in the same
586 directory, respectively.
589 *** New commands to show specific frames of multi-frame images.
590 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
591 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
594 *** New commands to speed up, slow down, or reverse animation.
595 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
596 speed up and slow down the animation. `a r' (`image-reverse-speed')
597 to reverse it and `a 0' (`image-reset-speed') to reset it.
600 *** The command `image-mode-fit-frame' deletes other windows.
601 When toggling, it restores the frame's previous window configuration.
602 It also has an optional frame argument, which can be used by Lisp
603 callers to fit the image to a frame other than the selected frame.
607 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
608 will cycle through faces in `hi-lock-face-defaults' without prompting.
611 *** New global command `M-s h .' (`highlight-symbol-at-point')
612 highlights the symbol found near point without prompting,
613 using the next face automatically.
615 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
618 ** New Info face `info-index-match', used to highlight matches in index
619 entries displayed by `Info-index-next', `Info-virtual-index' and
625 *** New option `js-switch-indent-offset'.
628 *** Better indentation of multiple-variable declarations.
629 If a declaration spans several lines, variables on the following lines
630 are lined up to the first one.
633 *** Recognition and better indentation of continuations in array comprehensions.
636 ** MH-E has been updated to version 8.5 - see separate MH-E-NEWS file.
641 *** Font locking for texinfo comments and new keywords.
643 *** Completion in Octave file buffers.
647 *** Jump to definition.
649 *** Documentation lookup/search.
652 ** OPascal mode is the new name for Delphi mode
655 *** All delphi-* variables and functions have been renamed to opascal-*.
656 Obsolete aliases exist for those likely to have been used externally.
659 *** The option `delphi-newline-always-indents' has been removed.
660 Use `electric-indent-mode' instead.
663 *** The TAB key runs the standard `indent-for-tab-command', not `delphi-tab'.
667 *** The format of `archive-contents' files, generated by package
668 repositories, has changed to allow a new (fifth) element in the data
669 vectors, containing an associative list with extra properties.
671 *** `describe-package' buffer uses the `:url' extra property to
672 display a `Homepage' header, if it's present.
674 *** In the buffer produced by `describe-package', there are now buttons
675 listing the keywords related to that package. You can click on them
676 to see other packages related to any given keyword.
678 *** In the *Packages* buffer, `f' or the Package->Filter menu filters
679 the packages by a keyword.
682 ** In Prolog mode, `prolog-use-smie' has been removed,
683 along with the non-SMIE indentation code.
687 *** The new command `remember-notes' creates a buffer that is saved on
688 `kill-emacs'. You can think of it as a *scratch* buffer whose content
689 is preserved. In fact, it was designed as a replacement for *scratch*
690 buffer and can be used that way by setting `initial-buffer-choice' to
691 `remember-notes' and `remember-notes-buffer-name' to "*scratch*".
692 Without the second change, the *scratch* buffer will still be there
693 for notes that do not need to be preserved.
695 *** The Remember package can now store notes in separates files.
696 You can use the new function `remember-store-in-files' within the
697 `remember-handler-functions' option. See `remember-data-directory'
698 and `remember-directory-file-name-format' for new options related to
703 *** Customize `rmail-mbox-format' to influence some minor aspects of
704 how Rmail displays non-MIME messages.
707 *** The `unrmail' command now converts from BABYL to mboxrd format,
708 rather than mboxo. Customize `unrmail-mbox-format' to change this.
713 *** Improved syntax highlighting and indentation.
716 *** New `electric-indent-mode' integration.
719 *** New option `ruby-encoding-magic-comment-style'.
722 *** New option `ruby-custom-encoding-magic-comment-template'.
725 *** New option `ruby-align-to-stmt-keywords'.
728 *** New option `ruby-align-chained-calls'.
731 *** More Ruby file types have been added to `auto-mode-alist'.
733 ** Search and Replace
736 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
737 starts a symbol (identifier) incremental search forward with the
738 symbol found near point added to the search string initially.
741 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
742 and adds it to the search string.
744 *** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
745 between nil and the value of the option `search-invisible' (or `open'
748 *** `query-replace' skips invisible text when `search-invisible' is nil,
749 and opens overlays with hidden text when `search-invisible' is `open'.
752 *** A negative prefix arg of replacement commands replaces backward.
753 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
754 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
757 *** By default, prefix arguments do not now terminate Isearch mode.
758 Set `isearch-allow-prefix' to nil to restore old behavior.
761 *** More Isearch commands accept prefix arguments, namely
762 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
766 *** Word search now matches whitespace at the beginning/end
767 of the search string if it contains leading/trailing whitespace.
768 In an incremental word search or when using a non-nil LAX argument
769 of `word-search-regexp', the lax matching can also match part of
770 the first word (in addition to the lax matching of the last word).
771 The same rules are now applied to the symbol search with the difference
772 that it matches symbols, and non-symbol characters between symbols.
775 ** New SES command `ses-rename-cell' allows assignment of names to SES cells.
778 ** The shell.el option `explicit-bash-args' includes --noediting by default.
779 All non-ancient Bash versions support this option.
784 *** The SMIE indentation engine is now used by default - see `sh-use-smie'.
787 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
789 ** SMIE indentation can be customized via `smie-config'.
790 Emacs can learn the appropriate indentation settings if you provide it
791 with an indented sample file.
794 ** New Term mode option `term-suppress-hard-newline'.
797 ** Todo mode has been rewritten and enhanced.
798 The Todo mode user manual describes all commands and most user
799 options. To support some of these features, a new file format is
800 used, which is incompatible with the old format; however, you can
801 convert old todo and done item files to the new format on initializing
802 the first new todo file, or at any later time with the provided
803 conversion command. The previous version of todo-mode.el has been
804 renamed to otodo-mode.el and is now obsolete. New features include:
806 *** Support for multiple todo files and archive files of done items.
808 *** Renaming, reordering, moving, merging, and deleting categories.
810 *** Sortable tabular summaries of categories and the item types they contain.
812 *** Cross-category lists of items filtered by specific criteria.
814 *** More fine-grained interaction with the Emacs diary, by being able to
815 decide for each todo item whether it appears in the Fancy Diary display.
817 *** Highly flexible new item insertion and item editing.
819 *** Moving items between categories, storing done items in their category
820 or in archive files, undoing or unarchiving done items.
822 *** Reprioritizing items by inputting a numerical priority.
824 *** Extensive customizability of operation and display, including many faces.
829 *** `trace-function' and `trace-function-background' no longer prompt for
830 the output buffer. Unless you use a prefix argument, they output to
834 *** With a prefix argument, `trace-function' and `trace-function-background'
835 will prompt for a "context". This is a Lisp expression, whose value at the
836 time the function is entered/exited is printed along with the function's
842 *** The experimental url syntax for remote file names has been removed.
845 *** New connection method "adb", which allows to access Android
846 devices by the Android Debug Bridge. The variable `tramp-adb-program'
847 can be used to adapt the path of the "adb" program, if needed.
850 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
851 "scpc" and "rsyncc" are discontinued. The ssh option
852 "ControlMaster=auto" is set automatically in all ssh-based methods,
853 when possible. See `tramp-use-ssh-controlmaster-options'.
856 *** Handlers for `file-acl' and `set-file-acl' for remote machines
857 which support POSIX ACLs.
860 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
861 for remote machines which support filesystem notifications.
863 ** New command `url-cookie-list' displays all the current cookies, and
864 allows deleting selected cookies.
866 ** VC and related modes
869 *** In VC directory mode, `D' displays diffs between VC-controlled
870 whole tree revisions.
873 *** In VC directory mode, `L' lists the change log for the current VC
874 controlled tree in a window.
877 *** In VC directory mode, `I' shows a log of changes that will be
878 received with a pull operation.
881 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
882 under current version control system. When called with a prefix
883 argument, you can remove a file from the ignored file list.
888 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
891 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
894 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
895 are obsolete. Customize the `woman-*' faces instead.
899 *** Iswitchb is made obsolete by icomplete-mode.
901 *** longlines.el is obsolete; use visual-line-mode instead.
907 *** terminal.el is obsolete; use term.el instead.
910 *** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.
913 *** xesam.el is obsolete, because the XESAM project has been canceled.
916 *** yow.el is obsolete; use fortune.el or cookie1.el instead.
919 *** The Info-edit command is obsolete. Editing Info nodes by hand
920 has not been relevant for some time.
923 * New Modes and Packages in Emacs 24.4
926 ** New package `eww' is a built-in web browser.
927 It is only available if Emacs is compiled with libxml2 support.
929 ** New minor mode `superword-mode'.
930 This overrides the default word motion commands to treat "symbol_words"
931 as a single word, similar to what `subword-mode' does.
934 ** New package nadvice.el offers lighter-weight advice facilities.
937 *** add-function/remove-function, which can be used to add/remove code on any
938 function-carrying place, such as process-filters or `<foo>-function' hooks.
940 *** advice-add/advice-remove to add/remove a piece of advice on a named
941 function, much like `defadvice' does.
943 ** New package frameset.el.
944 It provides a set of operations to save a frameset (the state of all
945 or a subset of the existing frames and windows, somewhat similar to a
946 frame configuration), both in-session and persistently, and restore it
947 at some point in the future.
950 ** New package filenotify.el provides an interface for file system
951 notifications. It requires that Emacs be compiled with one of the
952 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
955 * Incompatible Lisp Changes in Emacs 24.4
958 ** `kill-region' has lost its `yank-handler' optional argument.
961 ** `(input-pending-p)' no longer runs other timers that are ready to run.
962 The new optional CHECK-TIMERS parameter allows for the prior behavior.
965 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
968 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
969 Some languages match those as »...«, and others as «...», so it is
970 better for Emacs to stay neutral by default.
973 ** In compiled Lisp files, the header no longer includes a timestamp.
976 ** The default file coding for Emacs Lisp files is now utf-8.
977 (See `file-coding-system-alist'.) In most cases, this change is
978 transparent, but files that contain unusual characters without
979 specifying an explicit coding system may fail to load with obscure
980 errors. You should either convert them to utf-8 or add an explicit
984 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
985 It used to disable the minor mode, major mode, and text-property keymaps,
986 whereas now it simply has higher precedence.
988 ** Default process filters and sentinels are not nil any more.
989 Instead they default to a function that does what the nil value used to do.
992 ** `read-event' does not return decoded chars in ttys any more.
993 As was the case in Emacs 22 and before, the decoding of terminal
994 input, according to `keyboard-coding-system', is not performed in
995 `read-event' any more. But unlike in Emacs 22, this decoding is still
996 done before input-decode-map, function-key-map, etc.
999 ** The option `inhibit-local-menu-bar-menus' has been removed.
1002 ** Frame-local variables that affect redisplay do not work any more.
1003 More specifically, redisplay does not bother to check for a frame-local
1004 value when looking up variables.
1007 ** nil and "unbound" are indistinguishable in `symbol-function'.
1008 `symbol-function' does not signal a `void-function' error any more.
1009 To determine if a symbol's function definition is void, use `fboundp'.
1012 ** `defadvice' does not honor the `freeze' flag and cannot advise
1013 special-forms any more.
1016 ** `dolist' no longer binds VAR while evaluating the RESULT form,
1017 when lexical binding is enabled. Previously, VAR was bound to nil,
1018 which often led to spurious unused-variable warnings.
1021 ** The return value of `backup-buffer' has changed.
1022 The second argument is no longer an SELinux context, instead it is an
1023 alist of extended attributes as returned by the new function
1024 `file-extended-attributes'. The attributes can be applied to another
1025 file using `set-file-extended-attributes'.
1028 ** By default `copy-file' no longer copies file permission bits to an
1029 existing destination; and it sets the file permission bits of a newly
1030 created destination to those of the source, masked by the default file
1031 permissions. To copy the file permission bits, pass t as the
1032 PRESERVE-PERMISSIONS argument of `copy-file'.
1035 ** `visited-file-modtime' now returns -1 for nonexistent files.
1036 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
1037 in the presence of files with negative time stamps.
1040 ** The cars of the elements in `interpreter-mode-alist' are now
1041 treated as regexps rather than literal strings.
1044 * Lisp Changes in Emacs 24.4
1047 ** The second argument of `eval' can now specify a lexical environment.
1050 ** New functions `special-form-p' and `macrop'.
1052 ** New macro `define-alternatives' can be used to define generic commands.
1053 Generic commands are interactive functions whose implementation can be
1054 selected among several alternatives, as a matter of user preference.
1056 ** The `defalias-fset-function' property lets you catch `defalias'
1057 calls, and redirect them to your own function, instead of `fset'.
1060 ** New variable `enable-dir-local-variables'.
1061 Directory-local variables are ignored if this is nil. This may be
1062 useful for modes that want to ignore directory-locals while still
1063 respecting file-local variables.
1066 ** New function `get-pos-property'.
1068 ** Completion changes
1070 *** The separator for `completing-read-multiple' can now be a regexp.
1071 The default separator has been changed to allow surrounding spaces
1074 *** The `common-substring' arg of `display-completion-list' is obsolete.
1075 Either use `completion-all-completions', which returns highlighted
1076 strings (including for partial or substring completion), or call
1077 `completion-hilit-commonality' to add the highlight.
1079 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1080 let you enable symbol prettification (replacing a string like "lambda" with
1081 the Greek lambda character).
1086 *** Functions to pop up menus and dialogs now work on all terminals,
1087 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1088 `message-box', `yes-or-no-p', etc.
1090 The function `display-popup-menus-p' will now return non-nil for a
1091 display or frame whenever a mouse is supported on that display or
1094 *** New hook `tty-setup-hook'.
1098 *** New display action function `display-buffer-no-window' to not
1099 display the buffer in a window.
1101 *** New display action alist entry `allow-no-window' to indicate the
1102 caller of `display-buffer' is ready to handle the case of not
1103 displaying the buffer in a window.
1105 ** New hook `pre-redisplay-function'.
1108 ** New bool-vector set operation functions
1109 *** `bool-vector-exclusive-or'
1110 *** `bool-vector-union'
1111 *** `bool-vector-intersection'
1112 *** `bool-vector-set-difference'
1113 *** `bool-vector-not'
1114 *** `bool-vector-subsetp'
1115 *** `bool-vector-count-consecutive'
1116 *** `bool-vector-count-population'
1119 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1121 ** Error-handling changes
1124 *** New function `define-error'.
1127 *** `with-demoted-errors' takes an additional argument `format'.
1130 ** New macro `with-eval-after-load'.
1131 This is like the old `eval-after-load', but better behaved.
1134 ** New library subr-x.el with miscellaneous small utility functions
1135 *** `hash-table-keys'
1136 *** `hash-table-values'
1137 *** `string-blank-p'
1138 *** `string-empty-p'
1140 *** `string-reverse'
1141 *** `string-trim-left'
1142 *** `string-trim-right'
1144 *** `string-remove-prefix'
1145 *** `string-remove-suffix'
1148 ** Obsoleted functions
1151 *** `lisp-complete-symbol'
1152 *** `field-complete'
1153 *** `minibuffer-completion-contents'
1154 *** `isearch-nonincremental-exit-minibuffer'
1155 *** `isearch-filter-visible'
1156 *** `generic-make-keywords-list'
1157 *** `get-upcase-table' (use `case-table-get-table' instead).
1159 ** `with-wrapper-hook' is obsoleted by `add-function'.
1160 The few hooks that used with-wrapper-hook are replaced as follows:
1161 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1162 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1163 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1166 ** `byte-compile-interactive-only-functions' is now obsolete.
1167 To specify that a command should only be called interactively, give it
1168 a non-nil `interactive-only' property.
1171 ** `split-string' now takes an optional argument TRIM.
1172 The value, if non-nil, is a regexp that specifies what to trim from
1173 the start and end of each substring.
1176 ** New function `string-suffix-p'.
1178 ** File-handling changes
1181 *** Support for filesystem notifications.
1182 Emacs now supports notifications of filesystem changes, such as
1183 creation, modification, and deletion of files. This requires the
1184 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1185 MS-Windows systems, this is supported for Windows XP and newer
1189 *** The 9th element returned by `file-attributes' is now unspecified.
1190 Formerly, it was t if the file's gid would change if file were deleted
1191 and recreated. This value has been inaccurate for years on many
1192 platforms, and nobody seems to have noticed or cared.
1195 *** The 6th argument to `copy-file' has been renamed to
1196 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1197 Unix file permission bits as well as SELinux context.
1200 *** The function `file-ownership-preserved-p' now has an optional
1201 argument GROUP which causes it check for file group too. This can be
1202 used in place of the 9th element of `file-attributes'.
1205 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1206 argument, with the same interpretation as the returned value of
1207 `visited-file-modtime'.
1209 ** Autorevert changes
1212 *** If Emacs is compiled with file notification support, notifications
1213 are used instead of checking the time stamp of the files. You can
1214 disable this by setting the user option `auto-revert-use-notify' to
1215 nil. Alternatively, a regular expression of directories to be
1216 excluded from file notifications can be specified by
1217 `auto-revert-notify-exclude-dir-regexp'.
1220 *** The new user option `auto-revert-remote-files' enables reversion
1221 of remote files when set to non-nil.
1225 *** The function `face-spec-set' is now like `setq' for face specs.
1226 Its third arg now accepts values specifying a face spec type (defface,
1227 custom, or override spec), and the relevant spec is set accordingly.
1230 *** New function `add-face-text-property', which can be used to
1231 conveniently prepend/append new face properties.
1233 *** Face specs set via Custom themes now replace the `defface' spec
1234 rather than inheriting from it (as do face specs set via Customize).
1236 *** New face characteristic (supports :underline (:style wave))
1237 specifies whether or not the terminal can display a wavy line.
1240 *** New face spec attribute :distant-foreground
1241 specifies foreground to use if background color is near the foreground
1242 color that would otherwise have been used.
1247 *** `image-animated-p' is now `image-multi-frame-p'.
1248 It returns non-nil for any image that contains multiple frames,
1249 whether or not it specifies a frame delay.
1252 *** New variable `image-default-frame-delay' gives the frame delay for
1253 animated images which do not specify a frame delay.
1256 *** New functions `image-current-frame' and `image-show-frame' for getting
1257 and setting the current frame of a multi-frame image.
1262 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1263 **** object-name -> eieio-object-name
1264 **** object-class -> eieio-object-class
1265 **** object-class-fast -> eieio--object-class
1266 **** object-class-name -> eieio-object-class-name
1267 **** object-name-string -> eieio-object-name-string
1268 **** object-num-slots -> eieio--object-num-slots
1269 **** object-set-name-string -> eieio-object-set-name-string
1270 **** class-of -> eieio-object-class
1271 **** class-name -> eieio-class-name
1272 **** class-parent -> eieio-class-parent
1273 **** class-parents -> eieio-class-parents
1274 **** class-parents-fast -> eieio-class-parents-fast
1275 **** class-children -> eieio-class-children
1276 **** class-num-slots -> eieio--class-num-slots
1277 **** class-precedence-list -> eieio-class-precedence-list
1278 **** class-direct-subclasses -> eieio-class-children
1279 **** class-direct-superclasses -> eieio-class-parents
1281 ** Changes in encoding and decoding of text
1284 *** New coding-system `prefer-utf-8'.
1285 This is like `undecided' but prefers UTF-8 on decoding if the text to
1286 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1287 any non-ASCII characters are automatically encoded as UTF-8.
1290 *** New attributes of coding-systems whose type is `undecided'.
1291 Two new attributes, `:inhibit-null-byte-detection' and
1292 `:inhibit-iso-escape-detection', determine how to detect encoding of
1293 text that includes null bytes and ISO-2022 escape sequences,
1294 respectively. Each of these attributes can be either nil, zero, or
1295 t. If it is t, decoding text ignores null bytes and, respectively,
1296 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1297 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1298 text is encoded in one of the ISO-2022 encodings, such as
1299 iso-2022-7bit. If the value is zero, Emacs consults the variables
1300 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1302 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1303 UTF-8 encoding and decoding, whenever possible.
1305 These attributes are only meaningful for coding-systems of type
1306 `undecided'. (The type of a coding-system is determined by its
1307 `:coding-type' attribute and can be accessed by calling the
1308 `coding-system-type' function.)
1311 ** The `time-to-seconds' alias to `float-time' is no longer marked obsolete.
1314 ** New functions `group-gid' and `group-real-gid'.
1317 ** The spelling of the rx.el category `chinese-two-byte' has been
1318 corrected (the first 'e' was missing).
1321 ** Minor internal changes to the details of lock files.
1322 The lock for DIR/FILE is now _always_ DIR/.#FILE.
1323 If DIR/.#FILE already exists and is not an Emacs lock file,
1324 Emacs makes no attempt to lock DIR/FILE. (Previously, it fell back to
1325 numbered lock files DIR/.#FILE.0...).
1326 On file systems that do not support symbolic links, the lock is now a
1327 regular file with contents being what would have been in the symlink.
1329 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1332 *** The package descriptor and name of global variables, constants,
1333 and functions should be separated by two hyphens if the symbol is not
1334 meant to be used by other packages.
1337 * Changes in Emacs 24.4 on Non-Free Operating Systems
1340 ** The procedure for building Emacs on MS-Windows has changed.
1341 It is now built by running the same configure script as on all other
1342 platforms. This requires the MSYS environment and MinGW development
1343 tools. See the updated instructions in nt/INSTALL for details.
1345 Using the Posix configure script and Makefile's also means a change in
1346 the directory structure of the Emacs installation on Windows. It is
1347 now the same as on GNU and Unix systems. In particular, the auxiliary
1348 programs, such as cmdproxy.exe and hexl.exe, are in
1349 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1350 version), version-independent site-lisp is in share/emacs/site-lisp,
1351 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1352 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1353 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1354 directories and will find the files in there automatically; there's no
1355 need to set any variables due to this change.)
1358 ** Emacs on Windows 2000 and later can now access files and directories
1359 whose names cannot be encoded in the current system codepage.
1361 The new variable `w32-unicode-filenames' controls this feature: if it
1362 is t, Emacs uses Unicode APIs to pass file names to system calls,
1363 which lifts the limitation of file names to the current locale.
1366 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1367 The backtrace is written to the 'emacs_backtrace.txt' file in the
1368 directory where Emacs was running.
1371 ** The variable `buffer-file-type' is no longer supported.
1372 Setting it has no effect, and %t in the mode-line format is ignored.
1373 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1374 modifying it has no effect.
1377 ** Lock files now work on MS-Windows.
1378 This helps to prevent losing your edits if the same file is being
1379 edited in another Emacs session or by another user. See the node
1380 "Interlocking" in the Emacs User Manual for the details. To disable
1381 file locking, customize `create-lockfiles' to nil.
1383 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1384 GNUstep and Mac OS X 10.4 use the old font backend.
1385 To use the old backend by default, do on the command line:
1386 % defaults write org.gnu.Emacs FontBackend ns
1388 ** Improved fullscreen support on Mac OS X.
1389 Emacs supports both native (Mac OS X 10.7 and newer) and "old style" fullscreen.
1390 Customize `ns-use-native-fullscreen' to change the style.
1391 For Mac OS X 10.7 and newer, native is the default.
1393 ** On Mac OS X 10.7 and newer, Emacs uses sRGB colorspace by default.
1394 Customize `ns-use-srgb-colorspace' to disable this. Note that this
1395 does not apply to images.
1398 * Installation Changes in Emacs 24.3
1400 ** The default X toolkit is now Gtk+ version 3.
1401 If you don't pass `--with-x-toolkit' to configure, or if you use
1402 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1403 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1404 You can explicitly require a specific version by passing
1405 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1407 ** New configure option `--enable-link-time-optimization', to utilize
1408 an appropriate feature provided by GCC since version 4.5.0.
1410 ** New configure option `--without-all' to disable most of the optional
1411 features (image support, etc.) that are normally enabled by default.
1413 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1414 Emacs). If building with GCC, this enables compile-time checks that
1415 warn/give errors about possibly-questionable C code. On a recent GNU
1416 system there should be no warnings; on older and on non-GNU systems
1417 the results may be useful to developers.
1419 ** The configure option `--enable-use-lisp-union-type' has been
1420 renamed to `--enable-check-lisp-object-type', as the resulting
1421 Lisp_Object type no longer uses a union to implement the compile time
1422 check that this option enables.
1424 ** The configure option `--disable-maintainer-mode' has been removed,
1425 as it was confusingly-named and rarely useful.
1427 ** The configure options `--program-prefix', `--program-suffix', and
1428 `--program-transform-name' apply to more than just the installed
1429 binaries. Now they also affect the man pages, icons, and the
1430 etc/emacs.desktop file; but not the info pages, since this would break
1431 links between the various manuals.
1433 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1434 overwriting "emacs" in the installation bin/ directory with a link
1437 ** Emacs uses libtinfo in preference to libncurses, if available.
1439 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1440 /usr/pkg/lib to the linker search path. You must add them yourself if
1443 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1444 (from the bin and libexec directories, respectively). The former is
1445 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1448 * Startup Changes in Emacs 24.3
1450 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1451 lisp/ directory. There should not be any there anyway. If you have
1452 been adding them there, put them somewhere else; e.g., site-lisp.
1454 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1457 * Changes in Emacs 24.3
1461 *** `C-h f' (`describe-function') can now perform autoloading.
1462 When this command is called for an autoloaded function whose docstring
1463 contains a key substitution construct, that function's library is
1464 automatically loaded, so that the documentation can be shown
1465 correctly. To disable this, set `help-enable-auto-load' to nil.
1467 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1468 even after their associated libraries have been loaded (and the
1469 autoloads have been redefined as functions).
1473 *** Images displayed via ImageMagick now support transparency and the
1474 :background image specification property.
1476 *** When available, ImageMagick support is automatically enabled.
1477 It is no longer necessary to call `imagemagick-register-types'
1478 explicitly to install ImageMagick image types; that function is called
1479 automatically at startup, or when customizing an imagemagick- option.
1481 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1482 ImageMagick to view images. (You must call `imagemagick-register-types'
1483 afterwards if you do not use customize to change this.)
1485 *** The new variable `imagemagick-enabled-types' also affects which
1486 ImageMagick types are treated as images. The function
1487 `imagemagick-filter-types' returns the list of types that will be
1492 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1493 next and previous path separator, respectively.
1495 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1496 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1497 non-nil before enabling the mode.
1501 *** New option `mode-line-default-help-echo' specifies the help text
1502 (shown in a tooltip or in the echo area) for any part of the mode line
1503 that does not have its own specialized help text.
1505 *** You can now click mouse-3 in the coding system indicator to invoke
1506 `set-buffer-file-coding-system'.
1508 ** Server and client
1510 *** emacsclient now obeys string values for `initial-buffer-choice',
1511 if it is told to open a new frame without specifying any file to visit
1512 or expression to evaluate.
1514 *** New option `server-auth-key' specifies a shared server key.
1516 ** Emacs now generates backtraces on fatal errors.
1517 On encountering a fatal error, Emacs now outputs a textual description
1518 of the fatal signal, and a short backtrace on platforms like glibc
1519 that support backtraces.
1521 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1522 This minor mode replaces `toggle-read-only', which is now obsolete.
1524 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1525 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1526 respectively, without exiting from the prompt.
1528 ** In the Package Menu, newly-available packages are listed as "new",
1529 and sorted above the other "available" packages by default.
1531 ** If your Emacs was built from a repository checkout, the new variable
1532 `emacs-bzr-version' contains information about the bzr revision used.
1534 ** New option `create-lockfiles' specifies usage of lockfiles.
1535 It defaults to t. Changing it to nil inhibits the creation of lock
1536 files (use this with caution).
1538 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1539 variables on remote hosts.
1541 ** The entry for PCL-CVS has been removed from the Tools menu.
1542 The PCL-CVS commands are still available via the keyboard.
1544 ** Using "unibyte: t" in Lisp source files is obsolete.
1545 Use "coding: raw-text" instead.
1547 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1548 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1549 The previous binding, introduced in Emacs 24.1, was a mistake, because
1550 `C-c LETTER' bindings are reserved for user customizations.
1552 ** Internationalization
1554 *** New language environment: Persian.
1556 *** New input method `vietnamese-vni'.
1558 ** Nextstep (GNUstep / Mac OS X) port
1560 *** Support for fullscreen and the frame parameter fullscreen.
1562 *** A file dialog is used for open/save operations initiated from the
1566 * Editing Changes in Emacs 24.3
1568 ** Search and Replace
1570 *** Non-regexp Isearch now performs "lax" space matching.
1571 Each sequence of spaces in the supplied search string may match any
1572 sequence of one or more whitespace characters, as specified by the
1573 variable `search-whitespace-regexp'. (This variable is also used by a
1574 similar existing feature for regexp Isearch.)
1576 *** New Isearch command `M-s SPC' toggles lax space matching.
1577 This applies to both ordinary and regexp Isearch.
1579 *** New option `replace-lax-whitespace'.
1580 If non-nil, `query-replace' uses flexible whitespace matching too.
1583 *** Global `M-s _' starts a symbol (identifier) incremental search,
1584 and `M-s _' in Isearch toggles symbol search mode.
1585 `M-s c' in Isearch toggles search case-sensitivity.
1587 ** Navigation commands
1589 *** New binding `M-g c' for `goto-char'.
1591 *** New binding `M-g TAB' for `move-to-column'.
1593 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1594 interactively with no prefix arg. Previously, it moved to column 1.
1596 ** New option `yank-handled-properties' allows processing of text
1597 properties on yanked text, in ways that are more general than just
1598 removing them (as is done by `yank-excluded-properties').
1600 ** New option `delete-trailing-lines' specifies whether
1601 M-x delete-trailing-whitespace should delete trailing lines at the end
1602 of the buffer. It defaults to t.
1604 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1606 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1607 `ucs-insert' is now an obsolete alias for `insert-char'.
1609 ** The `z' key no longer has a binding in most special modes.
1610 It used to be bound to `kill-this-buffer', but `z' is too easy to
1613 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1614 It copies the region-rectangle as the last rectangle kill.
1618 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1620 *** New option `register-separator' specifies the register containing
1621 the text to put between collected texts for use with
1622 M-x append-to-register and M-x prepend-to-register.
1625 * Changes in Specialized Modes and Packages in Emacs 24.3
1627 ** Common Lisp emulation (CL)
1629 *** CL's main entry is now (require 'cl-lib).
1630 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1631 i.e., all its definitions have the "cl-" prefix (and internal definitions
1632 use the "cl--" prefix).
1634 If `cl' provided a feature under the name `foo', then `cl-lib'
1635 provides it under the name `cl-foo' instead; with the exceptions of the
1636 few `cl' definitions that had to use `foo*' to avoid conflicts with
1637 pre-existing Elisp entities. These have been renamed to `cl-foo'
1638 rather than `cl-foo*'.
1640 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1641 provide the old, non-prefixed names. Some exceptions are listed below:
1643 *** `cl-flet' is not like `flet' (which is deprecated).
1644 Instead it obeys the behavior of Common-Lisp's `flet'.
1645 In particular, in cl-flet function definitions are lexically scoped,
1646 whereas in flet the scoping is dynamic.
1648 *** `cl-labels' is slightly different from `labels'.
1649 The difference is that it relies on the `lexical-binding' machinery
1650 (as opposed to the `lexical-let' machinery used previously) to capture
1651 definitions in closures, so such closures will only work if `lexical-binding'
1654 *** `cl-letf' is not exactly like `letf'.
1655 The only difference is in details that relate to some deprecated usage
1656 of `symbol-function' in place forms.
1658 *** `progv' was rewritten to use the `let' machinery.
1659 A side effect is that variables without corresponding values are bound
1660 to nil rather than being made unbound.
1662 *** The following methods of extending `setf' are obsolete
1663 (use features from gv.el instead):
1664 `define-modify-macro' (use `gv-letplace')
1665 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1666 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1667 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1671 *** Changes are now highlighted using the same color scheme as in
1672 modern VCSes. Deletions are displayed in red (new faces
1673 `diff-refine-removed' and `smerge-refined-removed', and new definition
1674 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1675 and `smerge-refined-added', and new definition of `diff-added').
1677 *** The variable `diff-use-changed-face' defines whether to use the
1678 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1679 changes in context diffs.
1681 *** The new command `diff-delete-trailing-whitespace' removes trailing
1682 whitespace introduced by a diff.
1684 ** Ediff now uses the same color scheme as Diff mode.
1688 A new version of python.el, which provides several new features, including:
1689 per-buffer shells, better indentation, Python 3 support, and improved
1690 shell-interaction compatible with iPython (and virtually any other
1693 *** Some user options have been replaced/renamed, including (old -> new):
1694 **** python-indent -> python-indent-offset
1695 **** python-guess-indent -> python-indent-guess-indent-offset
1696 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1697 **** python-use-skeletons -> python-skeleton-autoinsert
1699 *** Some user options have been removed, including:
1701 **** `python-indent-string-contents': Strings are never indented.
1703 **** `python-honour-comment-indentation':
1704 Comments are always considered as indentation markers.
1706 **** `python-continuation-offset': Indentation is automatically
1707 calculated in a pep8 compliant way depending on the context.
1709 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1710 Have no direct mapping as the shell interaction is completely different.
1712 **** `python-python-command', `python-jython-command':
1713 Replaced by `python-shell-interpreter'.
1715 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1716 `python-pdbtrack-minor-mode-string', `python-source-modes':
1719 *** Some commands have been replaced (old -> new):
1720 **** python-insert-class -> python-skeleton-class
1721 **** python-insert-def -> python-skeleton-def
1722 **** python-insert-for -> python-skeleton-for
1723 **** python-insert-if -> python-skeleton-if
1724 **** python-insert-try/except -> python-skeleton-try
1725 **** python-insert-try/finally -> python-skeleton-try
1726 **** python-insert-while -> python-skeleton-while
1727 **** python-find-function -> python-nav-jump-to-defun
1728 **** python-next-statement -> python-nav-forward-sentence
1729 **** python-previous-statement -> python-nav-backward-sentence
1730 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1731 **** python-end-of-defun-function -> python-nav-end-of-defun
1732 **** python-send-buffer -> python-shell-send-buffer
1733 **** python-send-defun -> python-shell-send-defun
1734 **** python-send-region -> python-shell-send-region
1735 **** python-send-region-and-go -> emulate with python-shell-send-region
1736 and python-shell-switch-to-shell
1737 **** python-send-string -> python-shell-send-string
1738 **** python-switch-to-python -> python-shell-switch-to-shell
1739 **** python-describe-symbol -> python-eldoc-at-point
1743 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1745 *** The D-Bus object manager interface is implemented.
1747 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
1748 if their value does not fit into Emacs's integer range.
1750 *** The function `dbus-call-method' is now non-blocking.
1751 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
1753 *** Signals can also be sent as unicast messages.
1755 *** The argument list of `dbus-register-signal' has been extended,
1756 according to the new match rule types of D-Bus.
1758 *** `dbus-init-bus' supports private connections.
1760 *** There is a new function `dbus-setenv'.
1762 ** `desktop-path' no longer includes the "." directory.
1763 Desktop files are now located in ~/.emacs.d by default.
1767 *** `dired-do-async-shell-command' executes each file sequentially
1768 if the command ends in `;' (when operating on multiple files).
1769 Otherwise, it executes the command on each file in parallel.
1771 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1772 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
1775 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
1776 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
1777 mark/unmark/flag all files in the active region.
1779 *** The minibuffer default for `=' (`dired-diff') has changed.
1780 It is now the backup file for the file at point, if one exists.
1781 In Transient Mark mode the default is the file at the active mark.
1783 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1784 The global binding for `M-=', `count-words-region' is in effect.
1788 *** New module "notifications", which can send a notification when you
1789 receive a private message or your nickname is mentioned.
1791 *** ERC will look up server/channel names via auth-source and use any
1794 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1795 only applies to messages sent by lurkers.
1797 ** reStructuredText mode
1799 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1800 fontification, comment handling, and customization have all been revised
1803 *** Support for `imenu' and `which-function-mode'.
1805 *** The reStructuredText syntax is more closely covered.
1806 Sphinx support has been improved.
1808 *** `rst-insert-list' inserts new list or continues existing lists.
1810 *** A negative prefix argument always works for `rst-adjust'.
1812 *** The window configuration is reset after displaying a TOC.
1814 *** The constant `rst-version' describes the rst.el package version.
1818 *** Support for percent literals and recognition of regular expressions
1819 in method calls without parentheses with more methods, including Cucumber
1822 *** Improved syntax highlighting and indentation.
1824 *** New command `ruby-toggle-block', bound to `C-c {'.
1826 *** Some non-standard keybindings/commands have been removed:
1828 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
1830 **** `ruby-mark-defun'; use `mark-defun'.
1832 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1833 appropriate settings for the variables `beginning-of-defun-function'
1834 and `end-of-defun-function'.
1836 **** Non-standard keybindings for `backward-kill-word', `comment-region',
1837 `reindent-then-newline-and-indent' and `newline' have been removed.
1839 ** Shell Script mode
1841 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1843 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1845 *** `sh-use-smie' lets you choose a new indentation and navigation code.
1849 *** The free software compiler GHDL is supported (and now the default).
1851 *** Support for the VHDL-AMS packages has been added/updated.
1853 *** Updated to the 2002 revision of the VHDL standard.
1855 *** Accepts \r and \f as whitespace.
1859 *** The faces used by Apropos are now directly customizable.
1860 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1861 see the `apropos' Custom group for details.
1863 *** The old options whose values specified faces to use have been removed
1864 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1868 *** This package has been rewritten to use Tabulated List mode.
1870 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
1871 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1875 *** Algebraic simplification mode is now the default.
1876 To restrict to the limited simplifications given by the former
1877 default simplification mode, use `m I'.
1881 *** You can customize the header text that appears above each calendar month.
1882 See the variable `calendar-month-header'.
1884 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
1886 *** The calendars produced by cal-html include holidays.
1887 Customize `cal-html-holidays' to change this.
1891 *** The major modes from the parser generators "Bovine" and "Wisent"
1892 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1893 are in `auto-mode-alist', and the corresponding manuals are included.
1897 **** Menu support for the "Configuration" feature. This allows users to
1898 choose the active configuration (such as debug or install) from the menu.
1900 **** New command `ede-set' to interactively set project-local variables.
1902 **** Support for compiling, debugging, and running in "generic" projects.
1904 **** Autoconf editing support for M4 macros with complex arguments.
1906 **** Compilation support for the "linux" project type.
1908 **** "simple" projects have been removed; use "generic" projects instead.
1912 **** Support for parsing #include statements inside a namespace in C/C++.
1914 **** Improved support for 'extern "C"' declarations in C/C++.
1916 **** The ability to ignore more common special C/C++ preprocessor symbols,
1917 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1918 If available, include cdefs.h as an additional source of preprocessor symbols.
1920 **** Improved C/C++ function pointer parsing.
1922 **** In Python, support for converting imports to include file names.
1924 **** Ability to dynamically determine the Python load path.
1926 **** Support for the Python 'WITH' and 'AT' keywords.
1928 **** Improved tooltip completion.
1932 **** The SRecode manual is now included.
1934 **** Tag generation supports constructor/destructor settings and system
1935 include differentiation.
1937 **** Addition of 'Framework' support: Frameworks are specified when a
1938 particular kind of library (such as Android) is needed in a common language
1941 **** Support for nested templates and let variables override based on priority.
1943 **** Support for merging tables from multiple related modes, such as
1944 default -> c++ -> arduino.
1946 ** Compile has a new option `compilation-always-kill'.
1950 *** `custom-reset-button-menu' now defaults to t.
1952 *** Non-option variables are never matched in `customize-apropos' and
1953 `customize-apropos-options' (i.e., the prefix argument does nothing for
1954 these commands now).
1958 *** The variables `term-default-fg-color' and `term-default-bg-color'
1959 are now deprecated in favor of the customizable face `term'.
1961 *** You can customize how to display ANSI terminal colors and styles
1962 by customizing the corresponding `term-color-<COLOR>',
1963 `term-color-underline' and `term-color-bold' faces.
1967 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
1969 *** Remote processes are now also supported on remote MS-Windows hosts.
1973 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1974 Previously, this slot stored semicolon-separated attribute-value pairs
1975 appended to some imap URLs, but this is not compatible with RFC 3986.
1976 So now the `filename' slot stores the entire path and query components,
1977 and the `attributes' slot is always nil.
1979 *** New function `url-encode-url' for encoding a URI string.
1980 The `url-retrieve' function now uses this to encode its URL argument,
1981 in case that is not properly encoded.
1983 ** notifications.el supports now version 1.2 of the Notifications API.
1984 The function `notifications-get-capabilities' returns the supported
1987 ** Flymake uses fringe bitmaps to indicate errors and warnings.
1988 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1989 `flymake-warning-bitmap'.
1991 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1992 specifying URL types that should be converted to remote file names at
1993 the FFAP prompt. The default is now '("ftp").
1995 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
1996 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
1998 ** New option `mouse-avoidance-banish-position' specifies where the
1999 `banish' mouse avoidance setting moves the mouse.
2001 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
2002 closing brackets to be aligned with the line of the opening bracket.
2004 ** In Proced mode, new command `proced-renice' renices marked processes.
2006 ** New option `async-shell-command-buffer' specifies the buffer to use
2007 for a new asynchronous `shell-command' when the default output buffer
2008 `*Async Shell Command*' is already in use.
2010 ** SQL mode has a new option `sql-db2-escape-newlines'.
2011 If non-nil, newlines sent to the command interpreter will be escaped
2012 by a backslash. The default does not escape the newlines and assumes
2013 that the sql statement will be terminated by a semicolon.
2015 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
2016 (and modes that derive from it), sorts the column at point, or the Nth
2017 column if a numeric prefix argument is given.
2019 ** `which-func-modes' now defaults to t, so Which Function mode, when
2020 enabled, applies to all applicable major modes.
2022 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
2025 ** Follow mode no longer works by using advice.
2026 The option `follow-intercept-processes' has been removed.
2028 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
2030 ** Hooks renamed to avoid obsolete "-hooks" suffix:
2031 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
2032 *** semantic-change-hooks -> semantic-change-functions
2033 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
2034 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
2035 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
2036 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
2037 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
2038 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
2039 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
2040 *** rcirc-activity-hooks -> rcirc-activity-functions
2041 *** rcirc-print-hooks -> rcirc-print-functions
2042 *** dbus-event-error-hooks -> dbus-event-error-functions
2043 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
2044 *** checkdoc-style-hooks -> checkdoc-style-functions
2045 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2046 *** archive-extract-hooks -> archive-extract-hook
2047 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2048 *** hfy-post-html-hooks -> hfy-post-html-hook
2049 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2050 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2051 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2052 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2054 ** Obsolete packages
2057 In most cases, assoc+member+push+delq work just as well.
2058 And in any case it's just a terrible package: ugly semantics, terrible
2059 inefficiency, and not namespace-clean.
2068 * Incompatible Lisp Changes in Emacs 24.3
2070 ** Docstrings starting with `*' no longer indicate user options.
2071 Only variables defined using `defcustom' are considered user options.
2072 The function `user-variable-p' is now an obsolete alias for
2073 `custom-variable-p'.
2075 ** The return values of `defalias', `defun' and `defmacro' have changed,
2076 and are now undefined. For backwards compatibility, `defun' and
2077 `defmacro' currently return the name of the newly defined
2078 function/macro, but this should not be relied upon.
2080 ** `random' by default now returns a different random sequence in
2081 every Emacs run. Use `(random S)', where S is a string, to set the
2082 random seed to a value based on S, in order to get a repeatable
2083 sequence in later calls.
2085 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2086 that substring is inserted literally even if the LITERAL arg is
2087 non-nil, instead of causing an error to be signaled.
2089 ** `select-window' now always makes the window's buffer current.
2090 It does so even if the window was selected before.
2092 ** The function `x-select-font' can return a font spec, instead of a
2093 font name as a string. Whether it returns a font spec or a font name
2094 depends on the graphical library.
2096 ** `face-spec-set' no longer sets frame-specific attributes when the
2097 third argument is a frame (that usage was obsolete since Emacs 22.2).
2099 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2101 ** The CL package's `get-setf-method' function no longer exists.
2102 Generalized variables are now part of core Emacs Lisp, and implemented
2103 differently to the way cl.el used to do it. It is not possible to
2104 define a compatible replacement for `get-setf-method'. See the file
2105 gv.el for internal details of the new implementation.
2107 ** The arguments of `dbus-register-signal' are no longer just strings,
2108 but keywords or keyword-string pairs. The old argument list will
2109 still be supported for Emacs 24.x.
2111 ** Miscellaneous name changes
2112 Some Lisp symbols have been renamed to correct their spelling,
2113 or to be more consistent with standard Emacs terminology.
2115 *** Renamed functions
2116 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2117 **** inactivate-input-method -> deactivate-input-method
2118 **** quail-inactivate -> quail-deactivate
2119 **** robin-inactivate -> robin-deactivate
2120 **** viper-inactivate-input-method -> viper-deactivate-input-method
2121 **** viper-inactivate-input-method-action ->
2122 viper-deactivate-input-method-action
2123 **** ucs-input-inactivate -> ucs-input-deactivate
2126 The old hooks are still supported for backward compatibility, but they
2127 are deprecated and will be removed eventually.
2128 **** input-method-inactivate-hook -> input-method-deactivate-hook
2129 **** robin-inactivate-hook -> robin-deactivate-hook
2130 **** quail-inactivate-hook -> quail-deactivate-hook
2132 *** Renamed variables
2133 **** follow-deactive-menu -> follow-inactive-menu
2134 **** inactivate-current-input-method-function ->
2135 deactivate-current-input-method-function
2137 ** Some obsolete functions, variables, and faces have been removed:
2138 *** `last-input-char', `last-command-char', `unread-command-char'
2139 *** `facemenu-unlisted-faces'
2140 *** `rmail-decode-mime-charset'
2141 *** `iswitchb-read-buffer'
2142 *** `sc-version', `sc-submit-bug-report'
2143 *** `set-char-table-default'
2144 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2145 *** `compile-internal'
2147 *** `mode-line-inverse-video'
2148 *** `follow-mode-off-hook'
2149 *** `cvs-commit-buffer-require-final-newline'
2150 (use `log-edit-require-final-newline' instead)
2151 *** `cvs-changelog-full-paragraphs'
2152 (use `log-edit-changelog-full-paragraphs' instead)
2153 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2154 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2155 *** `vc-master-templates' (use `vc-handled-backends' instead)
2156 *** `vc-checkout-carefully'
2159 * Lisp Changes in Emacs 24.3
2161 ** CL-style generalized variables are now in core Elisp.
2162 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2163 You can define your own generalized variables using `gv-define-simple-setter',
2164 `gv-define-setter', etc.
2166 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2167 This can significantly speed up execution of non-byte-compiled code,
2168 but can also bump into previously unnoticed cyclic dependencies.
2169 These are generally harmless: they will simply cause the macro calls
2170 to be left for later expansion (as before), but will result in a
2171 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2172 You may wish to restructure your code so this does not happen.
2174 ** New sampling-based Elisp profiler.
2175 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2176 When finished, use M-x profiler-stop. The sampling rate can be based on
2177 CPU time or memory allocations.
2179 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2180 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2182 ** New macros `setq-local' and `defvar-local'.
2184 ** Face underlining can now use a wave.
2186 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2187 of `read-regexp' accepts a string ending with a colon and space, and its
2188 second argument DEFAULTS can be a list of strings accessible via `M-n'
2189 in the minibuffer ahead of other hard-coded useful regexp-related values.
2190 More commands use `read-regexp' now to read their regexp arguments.
2194 *** New function `completion-table-with-quoting' to handle completion
2195 in the presence of quoting, such as file completion in shell buffers.
2197 *** New function `completion-table-subvert' to use an existing completion
2198 table, but with a different prefix.
2202 *** New error type and new function `user-error'.
2203 These do not trigger the debugger.
2205 *** New option `debugger-bury-or-kill', saying what to do with the
2206 debugger buffer when exiting debug.
2208 *** Set `debug-on-message' to enter the debugger when a certain
2209 message is displayed in the echo area. This can be useful when trying
2210 to work out which code is doing something.
2212 *** New var `inhibit-debugger', automatically set to prevent accidental
2213 recursive invocations.
2217 *** New command `fit-frame-to-buffer' adjusts the frame height to
2220 *** The command `fit-window-to-buffer' can adjust the frame height
2221 if the new option `fit-frame-to-buffer' is non-nil.
2223 *** New macro `with-temp-buffer-window', similar to
2224 `with-output-to-temp-buffer'.
2226 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2229 *** New option `switch-to-buffer-preserve-window-point' to restore a
2230 window's point when switching buffers.
2232 *** New display action alist entries `window-height' and `window-width'
2233 specify the size of new windows created by `display-buffer'.
2235 *** New display action alist entry `pop-up-frame-parameters', if
2236 non-nil, specifies frame parameters to give any newly-created frame.
2238 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2239 tells display action functions to avoid changing which frame is
2242 *** New display action alist entry `previous-window', if non-nil,
2243 specifies window to reuse in `display-buffer-in-previous-window'.
2245 *** New display action functions `display-buffer-below-selected',
2246 and `display-buffer-in-previous-window'.
2248 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2249 now accept a third argument to avoid choosing the selected window.
2251 *** Additional values recognized for option `window-combination-limit'.
2253 *** The following variables are obsolete, as they can be replaced by
2254 appropriate entries in the `display-buffer-alist' function introduced
2256 **** `dired-shrink-to-fit'
2257 **** `display-buffer-reuse-frames'
2258 **** `display-buffer-function'
2259 **** `special-display-buffer-names'
2260 **** `special-display-frame-alist'
2261 **** `special-display-function'
2262 **** `special-display-regexps'
2266 *** `current-time-string' no longer requires that its argument's year
2267 must be in the range 1000..9999. It now works with any year supported
2268 by the underlying C implementation.
2270 *** `current-time' now returns extended-format time stamps
2271 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2272 PSEC is typically a multiple of 1000 on current machines. Other
2273 functions that use this format, such as `file-attributes' and
2274 `format-time-string', have been changed accordingly. Old-format time
2275 stamps are still accepted.
2277 *** The format of timers in `timer-list' and `timer-idle-list' is now
2278 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2279 The PSECS slot is new, and uses picosecond resolution. It can be
2280 accessed via the new `timer--psecs' accessor.
2282 *** Last-modified time stamps in undo lists now are of the form
2283 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2287 *** Improved security when handling persistent objects:
2289 **** `eieio-persistent-read' now features optional arguments for specifying
2290 the class to load, as well as a flag stating whether subclasses are allowed;
2291 if provided, other classes will be rejected by the reader. For
2292 compatibility with existing code, if the class is omitted only a
2295 **** New specialized reader for pulling in classes and signaling errors
2296 without evaluation of suspicious code.
2298 **** All slots that contain objects must have a :type. Slots with lists
2299 of objects must use a new type predicate for a list of an object type.
2301 *** Support for `find-function' and similar utilities, through the addition
2302 of filename support to generated symbols.
2304 ** Floating point functions now always return special values like NaN,
2305 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2306 Previously, they returned NaNs on some platforms but signaled errors
2307 on others. The affected functions are acos, asin, tan, exp, expt,
2308 log, log10, sqrt, and mod.
2310 ** New fringe bitmap `exclamation-mark'.
2312 ** Miscellaneous changes to special forms and macros
2314 *** `defun' and `defmacro' are now macros rather than special forms.
2316 *** `kbd' is now a function rather than a macro.
2318 ** Miscellaneous new functions
2320 *** `set-temporary-overlay-map' sets up a temporary keymap that
2321 takes precedence over most other maps for a short while (normally one key).
2323 *** `autoloadp' tests if its argument is an autoloaded object.
2325 *** `autoload-do-load' performs the autoloading operation.
2327 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2329 *** `file-name-base' returns a file name sans directory and extension.
2331 *** `function-get' fetches a function property, following aliases.
2333 *** `posnp' tests if an object is a `posn'.
2335 *** `system-users' returns the user names on the system.
2337 *** `system-groups' returns the group names on the system.
2339 *** `tty-top-frame' returns the topmost frame of a text terminal.
2341 ** The following functions and variables are obsolete:
2342 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2343 *** `buffer-has-markers-at'
2344 *** `macro-declaration-function' (use `macro-declarations-alist')
2345 *** `window-system-version' (provides no useful information)
2346 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2347 *** `query-replace-interactive'
2348 *** `font-list-limit' (has had no effect since Emacs < 23)
2351 * Changes in Emacs 24.3 on Non-Free Operating Systems
2353 ** Cygwin builds can use the native MS Windows user interface.
2354 Pass `--with-w32' to configure. The default remains the X11 interface.
2356 ** Two new functions are available in Cygwin builds:
2357 `cygwin-convert-file-name-from-windows' and
2358 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2359 code to access the Cygwin file-name mapping machinery to convert
2360 between Cygwin and Windows-native file and directory names.
2362 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2363 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2364 `mouse-autoselect-window'.
2366 ** On MS Windows Vista and later Emacs now supports symbolic links.
2368 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2369 support for libxml2, even if its presence is detected.
2371 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2373 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2374 directories to the search path. You must add them yourself if you want them.
2377 * Changes in Emacs 24.2
2379 ** This is mainly a bug-fix release.
2382 * Installation Changes in Emacs 24.1
2384 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2385 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2386 also depend on Gtk+. You can disable them with --without-rsvg and
2389 ** Emacs can be compiled with GnuTLS support.
2390 This happens by default if a suitably recent version of the library is
2391 found at build time. To prevent this, use the configure option
2392 `--without-gnutls'. See below for GnuTLS features.
2394 ** Emacs can be compiled with SELinux support.
2395 This happens by default if a suitably recent version of the library is
2396 found at build time. To prevent this, use the configure option
2397 `--without-selinux'. See below for SELinux features.
2399 ** Emacs can be compiled with ImageMagick support.
2400 This happens by default if a suitably recent version of the library is
2401 found at build time. To prevent this, use the configure option
2402 `--without-imagemagick'. See below for ImageMagick features.
2403 This feature is not available for the Nextstep or MS ports.
2405 ** Emacs can be compiled with libxml2 support.
2406 This happens by default if a suitably recent version of the library is
2407 found at build time. To prevent this, use the configure option
2408 `--without-xml2'. See below for libxml2 features.
2410 ** By default, the installed Info and man pages are compressed.
2411 You can disable this by configuring --without-compress-info.
2413 ** New configure option --with-wide-int.
2414 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2415 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2418 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2419 These provide no new functionality, they just remove the need to edit
2420 lib-src/Makefile by hand in order to use the associated features.
2422 ** New configure option --enable-use-lisp-union-type.
2423 This is only useful for Emacs developers to debug certain types of bugs.
2424 This is not a new feature; only the configure flag is new.
2426 ** The standalone programs digest-doc and sorted-doc are removed.
2427 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2429 ** The standalone program `fakemail' is removed.
2430 If you need it, feedmail.el provides a superset of the functionality.
2433 * Startup Changes in Emacs 24.1
2435 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2436 command line arguments, and the EMACS_UNIBYTE environment variable, no
2437 longer have any effect. (They were declared obsolete in Emacs 23.)
2439 ** New command line option `--no-site-lisp' removes site-lisp directories
2440 from load-path. -Q now implies this. This option does not affect the
2441 EMACSLOADPATH environment variable (and hence has no effect for
2445 * Changes in Emacs 24.1
2449 *** Many packages now use the `completion-at-point' command,
2450 rather than implementing separate completion commands.
2452 *** `completion-at-point' now handles tags and semantic completion.
2454 *** Completion in a non-minibuffer now tries to detect the end of completion
2455 and pops down the *Completions* buffer accordingly.
2457 *** New option `completion-cycle-threshold' allows completion cycling.
2459 *** New option `completion-category-overrides' for overriding the
2460 default completion style in certain circumstances.
2462 *** New completion style `substring'.
2464 *** Completion of buffer names uses `substring' completion by default.
2466 *** The option `widget-complete-field' has been removed.
2470 *** The first time you try sending mail, Emacs asks for a mail method.
2471 This is implemented by a new default for `send-mail-function', which
2472 is `sendmail-query-once'. This offers to use the smtpmail package, or
2473 to use the old defaults relying on external mail facilities
2474 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2475 `mailclient-send-it' on Windows).
2477 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2478 transfers the report to your desktop's preferred mail client, if there
2479 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2482 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2483 and Mail mode changes
2485 ** Emacs server and client changes
2487 *** New option `server-port' specifies the port for TCP Emacs servers.
2489 *** New emacsclient argument -q/--quiet suppresses some status messages.
2491 *** New emacsclient argument --frame-parameters specifies the frame
2492 parameters of any newly-created graphical frame.
2494 *** If emacsclient shuts down due to Emacs signaling an error,
2495 its exit status is 1.
2497 *** New emacsclient argument --parent-id ID.
2498 This opens a client frame in parent X window ID, via XEmbed, similar
2499 to the --parent-id argument to Emacs.
2501 ** Internationalization changes
2503 *** Emacs now supports display and editing of bidirectional text.
2504 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2505 displayed in the correct visual order as expected by users of those
2506 scripts. The display reordering is a "full bidirectionality" class
2507 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2508 with no RTL text should look exactly the same as before.
2510 **** New buffer-local variable `bidi-display-reordering'.
2511 To disable display reordering in a buffer, change this to nil.
2513 **** New buffer-local variable `bidi-paragraph-direction'.
2514 If nil (the default), Emacs determines the base direction of each
2515 paragraph from its text, as specified by the UBA. Setting the value
2516 to `right-to-left' or `left-to-right' forces a base direction on each
2519 Paragraphs with right-to-left base direction are displayed starting at
2520 the right window edge.
2522 *** Enhanced support for characters with no glyphs in available fonts,
2523 or, on text terminals, characters that cannot be encoded by the
2524 terminal coding system. The new option `glyphless-char-display-control'
2525 specifies how to display them: as a hexadecimal code in a box, a thin
2526 1-pixel space, an empty box, etc.
2528 *** New input methods for Farsi and Bulgarian
2529 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2531 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2532 (U+2010 and U+2011).
2534 *** New Hebrew translation of the Emacs Tutorial.
2535 Type `C-u C-h t' to choose it in case your language setup doesn't
2536 automatically select it.
2538 ** An Emacs Lisp package manager is now included.
2539 This is a convenient way to download and install additional packages,
2540 from a package repository at http://elpa.gnu.org.
2542 *** M-x list-packages shows a list of packages, which can be
2543 selected for installation.
2545 *** New command `describe-package', bound to `C-h P'.
2547 *** By default, all installed packages are loaded automatically when
2548 Emacs starts up. To disable this, set `package-enable-at-startup' to
2549 nil. To specify the packages to load, customize `package-load-list'.
2551 ** Custom theme changes
2553 *** New command `M-x customize-themes', which provides a convenient
2554 interface for enabling and disabling Custom themes.
2556 *** New option `custom-theme-load-path' is the load path for themes.
2557 Emacs no longer looks for Custom themes in `load-path'. The default
2558 value of `custom-theme-load-path' says to look for themes in
2559 `custom-theme-directory', followed by a subdirectory of
2560 `data-directory' named "themes/", which contains a small selection of
2561 built-in Custom themes.
2563 *** New option `custom-safe-themes' records known-safe theme files.
2564 If a theme is not in this list, Emacs queries before loading it, and
2565 offers to save the theme to `custom-safe-themes' automatically. By
2566 default, all themes included in Emacs are treated as safe.
2568 ** Improved GTK integration
2570 *** GTK scroll-bars are now placed on the right by default.
2571 The function `set-scroll-bar-mode' can change this.
2573 *** GTK tool bars can have just text, just images or images and text.
2574 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2575 the default is taken from desktop settings.
2577 *** GTK tool bars can be placed on any edge of the frame.
2578 The frame-parameter tool-bar-position controls this. It takes the
2579 values top, left, right or bottom. The Options => Show/Hide menu has
2582 *** The default colors for selected text (the `region' face) are taken
2583 from the GTK theme when Emacs is built with GTK.
2585 *** Emacs uses GTK tooltips by default if built with GTK.
2586 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2588 ** Graphical interface changes
2590 *** On graphical displays, the mode-line no longer ends in dashes.
2591 Also, the first dash (which does not indicate anything) is just
2592 displayed as a space.
2594 *** `menu-bar-select-buffer-function' lets you choose another operation
2595 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2597 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2598 built with Xft. These fonts can be set via X resources, for example:
2599 Emacs.pane.menubar.font: Courier-12
2603 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2604 or if it receives a SIGINT signal in batch mode.
2606 *** `kill-emacs-hook' is now also run in batch mode.
2607 Third-party code which adds to `kill-emacs-hook' should check if they
2608 do the right thing in batch mode.
2610 ** Scrolling changes
2612 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2613 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2614 of buffer at first key-press (instead they move to top/bottom of buffer)
2615 when `scroll-error-top-bottom' is non-nil.
2617 *** New option `scroll-error-top-bottom' (see above).
2619 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2620 scroll a line instead of full screen.
2622 *** New property `scroll-command' should be set on a command's symbol to
2623 define it as a scroll command affected by `scroll-preserve-screen-position'.
2625 *** If you customize `scroll-conservatively' to a value greater than 100,
2626 Emacs will never recenter point in the window when it scrolls due to
2627 cursor motion commands or commands that move point (e.f., `M-g M-g').
2628 Previously, you needed to use `most-positive-fixnum' as the value of
2629 `scroll-conservatively' to achieve the same effect.
2631 *** "Aggressive" scrolling now honors the scroll margins.
2632 If you customize `scroll-up-aggressively' or
2633 `scroll-down-aggressively' and move point off the window, Emacs now
2634 scrolls the window so as to avoid positioning point inside the scroll
2637 ** Basic SELinux support has been added.
2638 This requires Emacs to be linked with libselinux at build time.
2640 *** Emacs preserves the SELinux file context when backing up.
2641 Also, the function `copy-file' has an extra optional argument for
2642 preserving SELinux context, and the return value of `backup-buffer'
2643 now includes the SELinux context.
2645 *** New functions `file-selinux-context' and `set-file-selinux-context'
2646 get and set the SELinux context of a file.
2650 *** `delete-by-moving-to-trash' now only affects commands that specify
2651 trashing. This avoids inadvertently trashing temporary files.
2653 *** Calling `delete-file' or `delete-directory' with a prefix argument
2654 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2656 ** File- and directory-local variable changes
2658 *** You can stop directory local vars from applying to subdirectories.
2659 Add an element (subdirs . nil) to the alist portion of any variables
2660 settings to indicate that the section should not apply to
2663 *** Directory local variables can apply to some file-less buffers.
2664 Affected modes include dired, vc-dir, and log-edit. For example,
2665 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2666 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2667 `hack-dir-local-variables-non-file-buffer' to support this.
2669 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2670 Instead, use "eval: (minor-mode 1)".
2672 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2673 to `inhibit-local-variables-regexps'. As the name suggests, it now
2674 applies to ALL file local variables, not just -*- lines. The
2675 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2680 *** The `quit-window' command now restores the last buffer displayed
2681 in the quitted window.
2683 *** Resizing an Emacs frame now preserves proportional window sizes,
2684 modulo restrictions like window minimum sizes and fixed-size windows.
2686 *** The behavior of `display-buffer' is now customizable in detail.
2688 **** New option `display-buffer-base-action' specifies a list of
2689 user-determined display "actions" (functions and optional arguments
2690 for choosing the displaying window).
2692 This takes precedence over the default display action, which is
2693 specified by `display-buffer-fallback-action'.
2695 **** New option `display-buffer-alist' maps buffer name regexps to
2696 display actions, taking precedence over `display-buffer-base-action'.
2698 *** New option `window-combination-limit'.
2699 The new option `window-combination-limit' allows to return the space
2700 obtained for resizing or creating a window more reliably to the window
2701 from which such space was obtained.
2703 *** New option `window-combination-resize'.
2704 The new option `window-combination-resize' allows to split a window that
2705 otherwise cannot be split because it's too small by stealing space from
2706 other windows in the same combination. Subsequent resizing or deletion
2707 of the window will resize all windows in the same combination as well.
2709 *** New option `frame-auto-hide-function' lets you choose between
2710 iconifying or deleting a frame when burying a buffer in a dedicated
2711 frame, or quitting a window showing a buffer in a frame of its own.
2713 *** New commands `maximize-window' and `minimize-window'.
2714 These maximize and minimize the size of a window within its frame.
2716 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2717 These functions allow to navigate through the live buffers that have
2718 been shown in a specific window.
2720 ** Minibuffer changes
2722 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2723 This is handy for minibuffer-only frames, and is also used for the feature
2724 where mouse-1 pops up *Messages*"', which can now easily be changed.
2726 *** Minibuffers set `truncate-lines' to nil.
2727 If you want to change the value to something else, you could use
2728 for example `minibuffer-setup-hook'.
2730 ** `auto-mode-case-fold' is now enabled by default.
2732 ** `backup-by-copying-when-mismatch' now defaults to t.
2734 ** New basic faces `error', `warning', `success'.
2735 These are used to highlight text indicating failure, caution or
2736 successful operation.
2738 ** New option `list-colors-sort' defines the color sort order
2739 for `list-colors-display'.
2741 ** The variable `focus-follows-mouse' now always defaults to nil.
2744 * Editing Changes in Emacs 24.1
2748 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2749 `isearch-yank-line'.
2751 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2752 `isearch-yank-kill'.
2754 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2756 ** New commands `count-words-region' and `count-words'.
2758 *** M-= is bound to `count-words-region', not `count-lines-region'.
2759 The `count-words-region' command, when called interactively, reports
2760 the number of lines, words, and characters in the region. It is a
2761 superset of the old `count-lines-region', which is now an obsolete
2764 ** The command `just-one-space' (M-SPC), if given a negative argument,
2765 also deletes newlines around point.
2769 *** New option `delete-active-region'.
2770 If non-nil, [delete] and DEL delete the region if it is active and no
2771 prefix argument is given. If set to `kill', those commands kill
2774 *** New command `delete-forward-char', bound to [delete].
2775 This is meant for interactive use, and obeys `delete-active-region'.
2776 The command `delete-char' does not obey `delete-active-region'.
2778 *** `delete-backward-char' is now a Lisp function.
2779 Apart from obeying `delete-active-region', its behavior is unchanged.
2780 However, the byte compiler now warns if it is called from Lisp; Lisp
2781 callers should use delete-char with a negative argument instead.
2783 *** The option `mouse-region-delete-keys' has been deleted.
2785 ** Selection changes.
2787 The default handling of clipboard and primary selections has been
2788 changed to conform with modern X applications. In short, most
2789 commands for killing and yanking text now use the clipboard, while
2790 mouse commands use the primary selection.
2792 In the following, we provide a list of these changes, followed by a
2793 list of steps to get the old behavior back if you prefer that.
2795 *** `select-active-regions' now defaults to t.
2796 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
2797 the kill ring. The selected text is put in the primary selection, if
2798 the system possesses a separate primary selection facility (e.g. X).
2800 **** `select-active-regions' also accepts a new value, `only'.
2801 This means to only set the primary selection for temporarily active
2802 regions (usually made by mouse-dragging or shift-selection);
2803 "ordinary" active regions, such as those made with C-SPC followed by
2804 point motion, do not alter the primary selection.
2806 **** `mouse-drag-copy-region' now defaults to nil.
2808 *** mouse-2 is now bound to `mouse-yank-primary'.
2809 This pastes from the primary selection, ignoring the kill-ring.
2810 Previously, mouse-2 was bound to `mouse-yank-at-click'.
2812 *** `x-select-enable-clipboard' now defaults to t on all platforms.
2814 *** `x-select-enable-primary' now defaults to nil.
2815 Thus, commands that kill text or copy it to the kill-ring (such as
2816 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2818 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
2819 exactly equivalent to M-w, C-w, and C-y respectively.
2821 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
2822 non-nil by default, as Windows does not support the primary selection
2823 between applications.
2825 *** To return to the previous behavior, do the following:
2827 **** Change `select-active-regions' to nil.
2828 **** Change `mouse-drag-copy-region' to t.
2829 **** Change `x-select-enable-primary' to t (on X only).
2830 **** Change `x-select-enable-clipboard' to nil.
2831 **** Bind `mouse-yank-at-click' to mouse-2.
2833 *** Support for X cut buffers has been removed.
2835 *** X clipboard managers are now supported.
2836 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
2838 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2839 in the current rectangle. With a prefix argument, this prompts for a
2840 number to count from and for a format string.
2842 ** `redisplay-dont-pause' now defaults to t.
2843 This makes Emacs feel more responsive to editing commands that arrive
2844 at high rate, e.g. if you lean on some key, because stopping redisplay
2845 in the middle (when this variable is nil) forces more expensive
2846 updates later on, and Emacs appears to be unable to keep up.
2848 ** The behavior of <TAB> for active regions in Text mode has changed.
2849 In Text and related modes, typing <TAB> (`indent-for-tab-command')
2850 when the region is active causes Emacs to indent all the lines in the
2851 region, aligning them with the line previous to the first line in the
2852 region (or with the left margin if there is no previous line).
2854 ** When `occur' is called with a prefix argument, matching strings are
2855 collected into the `*Occur*' buffer without line numbers. If there
2856 are parenthesized subexpressions in the specified regexp, `occur'
2857 reads replacement text that may contain \\& and \\N whose convention
2858 follows `replace-match'.
2861 * Changes in Specialized Modes and Packages in Emacs 24.1
2863 ** Archive Mode has basic support for browsing and updating 7z archives.
2867 *** BibTeX mode now supports biblatex.
2868 Use the variable `bibtex-dialect' to select different BibTeX dialects.
2869 `bibtex-entry-field-alist' is now an obsolete alias for
2870 `bibtex-BibTeX-entry-alist'.
2872 *** New command `bibtex-search-entries', bound to C-c C-a.
2874 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
2876 *** New variable `bibtex-search-entry-globally'.
2880 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
2882 *** The default browser used by the package is now the "xdg-open" program,
2883 on platforms that support it. This calls your desktop's preferred browser.
2887 *** Support for musical notes.
2889 *** Support for logarithmic units.
2891 *** No longer uses the tex prefix for TeX specific unit names when
2892 using TeX or LaTeX mode.
2894 *** New option to highlight selections using faces.
2896 *** `calc-histogram' has the option of using a vector to determine the bins.
2898 *** New "O" option prefix.
2900 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2902 ** Calendar, Diary, and Appt
2904 *** Diary entries can contain non-printing "comments".
2905 See the variable `diary-comment-start'.
2907 *** Appointments can specify their individual warning times.
2908 See the variable `appt-warning-time-regexp'.
2910 *** The function specified by `appt-disp-window-function' may be passed
2911 lists of arguments if multiple appointments are due at similar times.
2912 If you are using a custom function for this, you should update it.
2914 *** New function `diary-hebrew-birthday'.
2916 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2917 may no longer be nil, but must all be strings.
2919 *** The obsolete (since Emacs 22.1) method of enabling the appt
2920 package by adding `appt-make-list' to `diary-hook' has been removed.
2921 Use `appt-activate' instead.
2923 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
2924 appt-issue-message (use the function appt-activate)
2925 appt-visible/appt-msg-window (use the variable appt-display-format)
2927 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2928 view-diary-entries, list-diary-entries, show-all-diary-entries
2932 *** New feature to "guess" the style in an existing buffer.
2933 The main entry point is M-x c-guess.
2935 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2937 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
2938 Thus C-M-a will, by default, go to the beginning of the immediate function,
2941 *** "Macros with semicolons" can be registered for correct indentation.
2942 Where such a macro ends a line (no semicolon) the next statement is no longer
2943 parsed as a statement continuation.
2945 ** Comint and modes derived from it use the standard completion code.
2949 *** Compilation mode can be used without Font Lock mode.
2950 `compilation-parse-errors-function' is now obsolete.
2952 *** New variable `compilation-filter-start', which is bound while
2953 `compilation-filter-hook' runs. It records the start position of the
2954 text inserted by `compilation-filter'.
2956 *** `compilation-error-screen-columns' and `compilation-first-column'
2957 are obeyed in the editing buffer. So programming language modes can
2958 set them, whereas previously only the value in the *Compilation*
2963 *** Customize buffers now contain a search field.
2964 The search is performed using `customize-apropos'.
2965 To turn off the search field, set `custom-search-field' to nil.
2967 *** Options in customize group buffers start out hidden if not customized.
2968 Use the arrow to the left of the option name to toggle visibility.
2970 *** custom-buffer-sort-alphabetically now defaults to t.
2972 *** The color widget now has a "Choose" button, which allows you to
2973 choose a color via `list-colors-display'.
2977 *** It is now possible to access buses other than the default system
2980 *** The `dbus-register-method' and `dbus-register-property' functions
2981 optionally do not register names.
2983 *** The new function `dbus-register-service' registers a known service
2984 name on a D-Bus without also registering a property or a method.
2988 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2989 if called with a prefix argument, read a file name from the minibuffer
2990 instead of using the current buffer.
2992 *** The "dired local variables" feature of Dired-x is obsolete.
2993 The standard directory local variables feature replaces it.
2997 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2998 controlling attempts to autojoin a channel.
3000 *** New variable `erc-coding-system-precedence': If we use `undecided'
3001 as the server coding system, this variable will then be consulted.
3002 The default is to decode strings that can be decoded as utf-8 as
3003 utf-8, and do the normal `undecided' decoding for the rest.
3007 *** The default value of `eshell-directory-name' has changed
3008 to be an "eshell" directory in `user-emacs-directory'.
3009 The old "~/.eshell/" directory is still used if it exists, though.
3013 *** The M-x gdb command now uses the GDB Machine Interface protocol.
3014 It now supports multithread non-stop debugging and simultaneous
3015 debugging of several threads.
3019 *** RET (`image-toggle-animation') toggles animation, if applicable.
3020 Animation plays once, unless the option `image-animate-loop' is non-nil.
3024 *** New command M-x info-display-manual displays a named Info manual.
3025 If that manual is already visited in some Info buffer, it displays
3026 that buffer. (This is handy if you have many manuals in many *info*
3027 buffers, and don't remember the name of the buffer visiting the manual
3028 you want to consult.) Otherwise, it loads and displays the manual.
3030 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
3031 This is for compatibility with the stand-alone Info reader program,
3032 and also because `Info-edit' is a rarely used command that is disabled
3035 ** Mail mode changes (not Message mode)
3037 *** New command M-x mail-add-attachment for adding MIME attachments
3039 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
3040 (Its name is misleading, since it has nothing to do with MIME
3041 attachments.) The old name is now an obsolete alias to the new name.
3043 ** MH-E has been updated to MH-E version 8.3.1.
3044 See MH-E-NEWS for details.
3046 ** Modula-2 mode provides auto-indentation.
3048 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3050 ** nXML mode no longer binds C-RET to `nxml-complete'.
3051 Completion is now performed via `completion-at-point', bound to C-M-i
3052 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3053 default), this performs tag completion.
3055 ** Org mode has been updated to version 7.8.09.
3056 See ORG-NEWS for details.
3058 ** Prolog mode has been completely revamped, with lots of additional
3059 functionality such as more intelligent indentation, electricity,
3060 support for more variants, including Mercury, and a lot more.
3064 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3065 in the Rmail incoming message.
3067 *** The variable `rmail-message-filter' no longer has any effect.
3068 This change was made in Emacs 23.1 but was not advertised at the time.
3069 Try using `rmail-show-message-hook' instead.
3073 *** M-x shell prompts for the shell path name if the default directory
3074 is a remote file name and neither the environment variable $ESHELL nor
3075 the variable `explicit-shell-file-name' is set.
3077 *** TAB is now bound to the standard `completion-at-point' command,
3078 which now implements the pcomplete rules for shell command completion.
3082 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3083 if the mail server supports them. This uses either built-in GnuTLS
3084 support, or the starttls.el library. Customize `smtpmail-stream-type'
3087 *** The variable `smtpmail-auth-credentials' has been removed.
3088 By default, the information is now stored in the file ~/.authinfo.
3089 This was the default value of smtpmail-auth-credentials. If you had
3090 customized smtpmail-auth-credentials to a list of user names and
3091 passwords, those settings are not used. During your first connection
3092 to the smtp server, Emacs will prompt for the user name and password,
3093 and offer to save them to ~/.authinfo. Or you can manually copy the
3094 credentials to ~/.authinfo. For example, if you had
3096 (setq smtpmail-auth-credentials
3097 '(("mail.example.org" 25 "jim" "s!cret")))
3099 then the equivalent line in ~/.authinfo would be
3101 machine mail.example.org port 25 login jim password s!cret
3103 See the auth-source manual for more information, e.g. on encrypting
3104 the credentials file.
3106 *** The variable `smtpmail-starttls-credentials' has been removed.
3107 If you had that set, you need to put
3109 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3111 in your ~/.authinfo file instead.
3113 *** SMTPmail defaults to using the address in the From: header as the
3114 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3115 to the address you wish to use instead.
3119 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3120 and `sql-oracle-scan-on'.
3122 *** New options controlling prompting for login parameters.
3123 Each supported product has a custom variable `sql-*-login-params',
3124 which is a list of the parameters to be prompted for before a
3125 connection is established.
3127 *** The command `sql-product-interactive' now takes a prefix argument,
3128 which causes it to prompt for an SQL product.
3130 *** Product-specific SQL interactive commands now take prefix arguments.
3131 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3132 given a prefix argument, prompt for a name for the SQL interactive
3133 buffer. This reduces the need for calling `sql-rename-buffer'.
3135 *** SQL interactive modes suppress command continuation prompts, and
3136 replace tabs with spaces. The first change impacts multiple line SQL
3137 statements entered with C-j between each line, statements yanked into
3138 the buffer and statements sent with `sql-send-*' functions. The
3139 second prevents the MySQL and Postgres interpreters from listing
3140 object name completions when sent text via `sql-send-*' functions.
3142 *** New command `sql-connect' starts a predefined SQLi session,
3143 using the login parameters from `sql-connection-alist'.
3145 *** New "Save Connection" menu item in SQLi buffers.
3146 This gathers the login params specified for the SQLi session, if it
3147 was not started by a connection, and saves them as a new connection.
3149 *** New commands for listing database objects and details:
3150 sql-list-all and sql-list-table.
3152 *** An API for manipulating SQL product definitions has been added.
3156 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3160 *** New inline access method "ksu" (kerberized su).
3162 *** The following access methods are discontinued: "ssh1_old",
3163 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3165 *** The user option `remote-file-name-inhibit-cache' controls whether
3166 remote file attributes are cached for better performance.
3168 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3169 default value to "".
3171 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3172 for remote machines which support SELinux.
3174 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3175 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3176 the degree of parallelism.
3178 ** VC and related modes
3180 *** Support for pulling on distributed version control systems.
3181 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3182 supported (currently with Bzr, Git, and Mercurial), to update the
3183 current branch and working tree. A prefix argument means to prompt
3184 the user for specifics, e.g. a pull location.
3186 *** `vc-update' is now an alias for `vc-pull'.
3188 *** Support for merging on distributed version control systems.
3189 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3190 is supported (currently with Bzr, Git, and Mercurial), to merge
3191 changes from another branch into the current one. It prompts for
3192 specifics, e.g. a merge source.
3194 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3195 shows a diff while querying the user. It defaults to t.
3197 *** Log entries in some Log View buffers can be toggled to display a
3198 longer description by typing RET (log-view-toggle-entry-display).
3199 This is currently supported for Bzr, Git, and Mercurial (to support
3200 another backend, define a `log-view-expanded-log-entry-function').
3201 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3202 use this to display the full log entry for the revision at point.
3204 *** New command `vc-ediff' allows visual comparison of two revisions
3205 of a file similar to `vc-diff', but using ediff backend.
3207 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3208 this was not advertised at the time.
3210 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3211 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3212 this was not advertised at the time.
3218 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3220 *** partial-completion-mode (complete.el) is obsolete.
3221 You can get a comparable behavior with:
3222 (setq completion-styles '(partial-completion initials))
3223 (setq completion-pcm-complete-word-inserts-delimiters t)
3225 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3227 *** pgg is obsolete (use EasyPG instead).
3229 *** sregex.el is obsolete, since rx.el is a strict superset.
3231 *** s-region.el and pc-select.el are obsolete.
3232 They are superseded by shift-select-mode, enabled by default since 23.1.
3234 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3238 *** The Landmark game is now invoked with `landmark', not `lm'.
3239 Its functions and variables have been similarly renamed.
3241 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3242 (This interfered with cua-mode.)
3244 *** f90.el has some support for Fortran 2008 syntax.
3246 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3248 *** New command `nato-region' converts text to NATO phonetic alphabet.
3251 * New Modes and Packages in Emacs 24.1
3253 ** Occur Edit mode applies edits made in *Occur* buffers to the
3254 original buffers. It is bound to "e" in Occur mode.
3256 ** New global minor mode electric-pair-mode.
3257 When enabled, typing an open parenthesis automatically inserts the
3258 matching closing one.
3260 ** New global minor mode electric-indent-mode.
3261 When enabled, typing certain characters triggers reindentation.
3262 Major modes wishing to use this can set electric-indent-chars or
3263 electric-indent-functions.
3265 ** New global minor mode electric-layout-mode.
3266 When enabled, typing certain characters automatically inserts newlines.
3267 Major modes wishing to use this can set electric-layout-rules.
3269 ** tabulated-list.el provides a generic major mode for tabulated data,
3270 from which other modes can be derived.
3272 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3274 ** secrets.el is an implementation of the Secret Service API, an
3275 interface to password managers like GNOME Keyring or KDE Wallet. The
3276 Secret Service API requires D-Bus for communication. The command
3277 `secrets-show-secrets' offers a buffer with a visualization of the
3280 ** notifications.el provides an implementation of the Desktop
3281 Notifications API. It requires D-Bus for communication.
3283 ** soap-client.el supports access to SOAP web services from Emacs.
3284 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3286 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3288 ** New emacs-lock.el package.
3289 The previous version has been moved to obsolete/old-emacs-lock.el.
3290 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3291 against exiting Emacs and killing the buffer can be set separately.
3292 The mechanism for automatically turning off protection for buffers
3293 with dead inferior processes has been generalized.
3296 * Incompatible Lisp Changes in Emacs 24.1
3298 ** Passing a nil argument to a minor mode function call now ENABLES
3299 the minor mode unconditionally. This is so that you can write e.g.
3301 (add-hook 'text-mode-hook 'foo-mode)
3303 to enable foo-mode in Text mode buffers, removing the need for
3304 `turn-on-foo-mode' style functions. This affects all mode commands
3305 defined by `define-minor-mode'. If called interactively, the mode
3306 command still toggles the minor mode.
3308 ** The return value of `backup-buffer' has changed.
3309 It is now a list of three elements, where the second element is a list
3310 describing the original file's SELinux context. If Emacs or the
3311 system lacks SELinux support, the context list is (nil nil nil nil).
3312 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3314 ** `char-direction-table' and the `char-direction' function were deleted.
3315 They were buggy and inferior to the new support of bidirectional
3316 editing introduced in Emacs 24. If you need the bidirectional
3317 properties of a character, use `get-char-code-property' with the last
3318 argument `bidi-class'.
3320 ** `copy-directory' now copies the source directory as a subdirectory
3321 of the target directory, if the latter is an existing directory. The
3322 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3323 the contents directly into a pre-existing target directory.
3325 ** For mouse click input events in the text area, the Y pixel
3326 coordinate in the POSITION list now counts from the top of the text
3327 area, excluding any header line. Previously, it counted from the top
3330 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3331 been further reduced. Now a backquote not followed by a space is
3332 always treated as a "new-style" backquote. Please remove all
3333 "old-style" backquotes from your code. If your code uses backquotes
3334 as documented in the Elisp manual, and compiles without warning, then
3335 you have nothing to do in this regard. Code not following the
3336 appropriate conventions may fail to compile.
3338 The most common cause of trouble seems to be an old-style backquote
3339 followed by a newline. Another cause of trouble is vector notation
3340 for key sequence notation: instead of [(control ,)] and [(control ')],
3341 you should write [(control ?,)] and [(control ?')], which will work in
3344 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3345 was not advertised at the time. The function `custom-initialize-delay'
3346 replaced all known uses.
3348 ** `view-buffer' now treats special mode-class in the same way that
3349 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3350 major mode is special).
3352 ** Menu and tool bar changes
3354 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3355 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3356 With these alist entries omitted, `make-frame' checks the value of the
3357 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3358 a menu-bar or tool-bar, respectively. If the alist entries are added,
3359 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3361 *** The menu bar bindings's caches are not used any more.
3362 Use (where-is-internal <def> nil t) instead.
3364 ** Regions created by mouse dragging are now normal active regions,
3365 similar to those created by shift-selection (see Selection changes
3366 above). In previous Emacs versions, these regions were delineated by
3367 `mouse-drag-overlay'; that variable has been removed.
3369 ** The fourth argument of `filter-buffer-substring' has been removed.
3370 If you want to remove text properties from the final result, simply
3371 pass the result through substring-no-properties.
3373 ** cl.el no longer provides `cl-19'.
3375 ** The following obsolete functions and aliases have been removed
3376 (the appropriate new function is given in parentheses; "not needed"
3377 means you can just remove all calls to the function in question):
3379 *** `comint-kill-output' (`comint-delete-output')
3380 *** `decompose-composite-char' (`char-to-string')
3381 *** `outline-visible' (`outline-invisible-p')
3382 *** `internal-find-face' (`facep')
3383 *** `internal-get-face' (`facep and check-face')
3384 *** `frame-update-faces' (not needed)
3385 *** `frame-update-face-colors' (`frame-set-background-mode')
3386 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3387 *** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
3388 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3389 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3390 *** `x-make-font-unbold' (`make-face-unbold')
3391 *** `x-make-font-unitalic' (`make-face-unitalic')
3392 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3393 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3394 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3395 *** `char-bytes' (== 1)
3396 *** `isearch-return-char' (`isearch-printing-char')
3397 *** `make-local-hook' (not needed)
3398 *** `set-screen-height' (`set-frame-height')
3399 *** `set-screen-width' (`set-frame-width')
3401 ** The following obsolete variables and varaliases have been removed
3402 (the appropriate new variable is given in parentheses):
3404 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3405 *** `vc-header-alist' (`vc-BACKEND-header')
3406 *** `directory-sep-char' (== ?/)
3407 *** `font-lock-defaults-alist' (`font-lock-defaults')
3408 *** `e' (`float-e').
3410 ** The following obsolete files were removed:
3411 sc.el, x-menu.el, rnews.el, rnewspost.el
3413 ** The format of the finder-inf.el file has changed, since the Finder
3414 mechanism is now based on the package system. The variable
3415 `finder-package-info' is replaced by `package--builtins' and
3416 `finder-keywords-hash'.
3418 ** When generating autoloads, `update-directory-autoloads' no longer
3419 assumes every inspected file is in your `load-path'. It instead
3420 generates relative names according to the current `load-path'.
3423 * Lisp Changes in Emacs 24.1
3425 ** Code can now use lexical scoping by default instead of dynamic scoping.
3426 The `lexical-binding' variable enables lexical scoping for local
3427 variables. It is typically set via a file-local variable in the first
3428 line of the file, in which case it applies to all the code in that
3431 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3432 binding instead of the old dynamic binding mode.
3434 *** Lexically scoped interpreted functions are represented with a new form
3435 of function value which looks like (closure ENV ARGS &rest BODY).
3437 *** New macro `letrec' to define recursive local functions.
3439 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3440 So do `defcustom' and other forms that call `defvar' as a subroutine.
3442 *** New function `special-variable-p' to check whether a variable is
3443 declared as dynamically bound.
3445 *** The form ((lambda ...) ...) is deprecated.
3447 ** An Emacs Lisp testing tool is now included.
3448 Emacs Lisp developers can use this tool to write automated tests for
3449 their code. See the ERT info manual for details.
3451 ** Changes for bidirectional display and editing
3453 *** New function `current-bidi-paragraph-direction'.
3454 This returns the base direction of the paragraph at point.
3456 *** New function `bidi-string-mark-left-to-right'.
3457 Given a string containing characters from right-to-left scripts, this
3458 function returns another string which can be safely inserted into a
3459 buffer, such that any following text will be always displayed to the
3460 right of that string. (This works by appending an invisible Unicode
3461 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3463 This is useful when the buffer has overall left-to-right paragraph
3464 direction and you need to insert a string whose contents are not known
3465 in advance, without disrupting the layout of the line.
3469 *** Window tree functions are accessible in Elisp.
3470 Functions are provided to return the parent, siblings or child windows
3471 of any window including internal windows (windows not associated with a
3472 buffer) in the window tree.
3474 **** New function `window-valid-p' gives non-nil for live and internal
3477 **** Window manipulation can deal with internal windows.
3478 Many window handling functions like `split-window', `delete-window', or
3479 `delete-other-windows' as well as the window resizing functions can now
3480 act on any window including internal ones.
3482 *** window-total-height/-width vs window-body-height/-width.
3483 The function `window-height' has been renamed to `window-total-height'
3484 and `window-width' has been renamed to `window-body-width'. The old
3485 names are provided as aliases. Two new functions `window-total-width'
3486 and `window-body-height' are provided.
3488 *** Window parameters specific to window handling functions.
3489 For each window you can specify a parameter to override the default
3490 behavior of a number of functions like `split-window', `delete-window'
3491 and `delete-other-windows'. The variable `ignore-window-parameters'
3492 allows to ignore processing such parameters.
3494 *** New semantics of third argument of `split-window'.
3495 The third argument of `split-window' has been renamed to SIDE and can be
3496 set to any of the values 'below, 'right, 'above, or 'left to make the
3497 new window appear on the corresponding side of the window that shall be
3498 split. Any other value of SIDE will cause `split-window' to split the
3499 window into two side-by-side windows as before.
3501 *** Window resizing functions.
3502 A new standard function for resizing windows called `window-resize' has
3503 been introduced. This and all other functions for resizing windows no
3504 longer delete any windows when they become too small.
3506 *** Deleting the selected window now selects the most recently selected
3507 live window on that frame instead.
3509 *** `adjust-window-trailing-edge' adjustments.
3510 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3511 is able to resize other windows if a window adjacent to the trailing
3512 edge cannot be shrunk any more. This makes its behavior more similar to
3513 that of Emacs 21 without compromising, however, its inability to delete
3514 windows which was introduced in Emacs 22.
3516 *** Window-local buffer lists.
3517 Windows now have local buffer lists. This means that removing a buffer
3518 from display in a window will preferably show the buffer previously
3519 shown in that window with its previous window-start and window-point
3520 positions. This also means that the same buffer may be automatically
3521 shown twice even if it already appears in another window.
3523 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3524 which if non-nil requires the buffer to be displayed in the currently
3525 selected window, signaling an error otherwise. If nil, another window
3526 can be used, e.g. if the selected one is strongly dedicated.
3528 *** `split-window-vertically' and `split-window-horizontally' renamed
3529 to `split-window-below' and `split-window-right' respectively.
3530 The old names are kept as aliases.
3534 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3535 named ACTION, and takes a display action of the same form as
3536 `display-buffer-base-action' (see Changes, above). A non-nil,
3537 non-list value is treated specially, as the old meaning.
3539 **** New variable `display-buffer-overriding-action'.
3541 **** The procedure of `display-buffer' etc. to choose a window is
3542 determined by combining `display-buffer-overriding-action',
3543 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3544 and `display-buffer-fallback-action'. The second and fourth of these
3545 are user-customizable variables.
3547 See the docstring of `display-buffer' for details.
3549 *** New functions `window-state-get' and `window-state-put'.
3550 These functions allow to save and restore the state of an arbitrary
3551 frame or window as an Elisp object.
3555 *** New variable `completion-extra-properties' used to specify extra
3556 properties of the current completion:
3557 - :annotate-function, same as the old completion-annotate-function.
3558 - :exit-function, function to call after completion took place.
3560 *** Functions on `completion-at-point-functions' can return any of the
3561 properties valid for `completion-extra-properties'.
3563 *** `completion-annotate-function' is obsolete.
3565 *** New `metadata' method for completion tables. The metadata thus returned
3566 can specify various details of the data returned by `all-completions':
3567 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3568 used to select a style in completion-category-overrides.
3569 - `annotation-function' to add annotations in *Completions*.
3570 - `display-sort-function' to specify how to sort entries in *Completions*.
3571 - `cycle-sort-function' to specify how to sort entries when cycling.
3573 *** `minibuffer-local-filename-must-match-map' is not used any more.
3574 Instead, the bindings in `minibuffer-local-filename-completion-map'
3575 are combined with `minibuffer-local-must-match-map'.
3577 *** New variable `completing-read-function' allows overriding the
3578 behavior of `completing-read'.
3580 ** `glyphless-char-display' can now distinguish between graphical and
3581 text terminal display, via a char-table entry that is a cons cell.
3583 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3584 Instead, the offending function is removed.
3588 *** New function `run-hook-wrapped' for running an abnormal hook by
3589 passing the hook functions as arguments to a "wrapping" function.
3590 Like `run-hook-with-args-until-success', it stops at the first
3591 non-nil return value.
3593 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3594 set of "wrapping" filters, similar to around advice.
3595 (A version of this macro was actually added in Emacs 23.2 but was not
3596 advertised at the time.)
3600 *** New macro `condition-case-unless-debug' (this was actually added in
3601 Emacs 23.1 as condition-case-no-debug, but not advertised)
3603 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3605 *** Variable `stack-trace-on-error' removed.
3607 *** The debugger can now "continue" from an error, which means it will
3608 jump to the error handler as if the debugger had not been invoked
3609 instead of jumping all the way to the top-level.
3611 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3612 This can be useful when `inhibit-quit' is set.
3614 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3615 named Emacs server instances.
3617 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3618 to redirect STDOUT to a file.
3620 ** The function `format-time-string' now supports the %N directive,
3621 for higher-resolution time stamps.
3623 ** New input reading functions
3625 *** New function `read-char-choice' reads a restricted set of
3626 characters, discarding any inputs not inside the set.
3628 *** The command `read-color' now requires a match for a color name
3629 or RGB triplet, instead of signaling an error if the user provides
3632 **** `facemenu-read-color' is now an alias for `read-color'.
3634 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3635 The variable is now used to load all kind of supported dynamic libraries,
3636 not just image libraries. The previous name is still available as an
3639 ** Syntax parsing changes
3641 *** New variable `syntax-propertize-function'.
3642 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3643 This allows syntax-table properties to be set independently from font-lock:
3644 just call syntax-propertize to make sure the text is propertized.
3645 Together with this new variable come a new hook
3646 syntax-propertize-extend-region-functions, as well as two helper functions:
3647 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3648 as-is; and syntax-propertize-rules which provides a new way to specify
3651 *** Syntax tables support a new "comment style c" additionally to style b.
3653 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3655 ** frame-local variables cannot be let-bound any more.
3657 ** Major and minor mode changes
3659 *** `set-auto-mode' now respects mode: local variables at the end of files,
3660 as well as those in the -*- line.
3662 *** `prog-mode' is a new major mode from which programming modes
3665 **** `prog-mode-hook' can be used to enable features for programming
3666 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3667 on-the-fly spell checking for comments and strings.
3669 *** New hook `change-major-mode-after-body-hook', run by
3670 `run-mode-hooks' just before any other mode hooks.
3672 *** Enabled globalized minor modes can be disabled in specific major modes.
3673 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3674 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3676 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3678 ** File-handling changes
3680 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3681 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3682 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3683 argument is supplied (see Trash changes, above).
3685 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3687 ** Tool-bars can display separators.
3688 Tool-bar separators are handled like menu separators in menu-bar maps,
3689 i.e. via menu entries of the form `(menu-item "--")'.
3693 *** Animated images support (currently animated gifs only).
3695 **** `image-animated-p' returns non-nil if an image can be animated.
3697 **** `image-animate' animates a supplied image spec.
3699 **** `image-animate-timer' returns the timer object for an image that
3702 *** `image-extension-data' has been renamed to `image-metadata'.
3703 The old name is an obsolete alias to the new one.
3705 *** Image mode can view any image type that ImageMagick supports.
3706 This requires Emacs to be built with ImageMagick support.
3708 **** New function `imagemagick-types', defined if ImageMagick support
3709 is enabled, returns a list of image file extensions that your
3710 ImageMagick installation supports.
3712 **** New function `imagemagick-register-types' enables ImageMagick
3713 image types in Image mode and in `create-image' and other helper
3716 **** New option `imagemagick-types-inhibit' excludes certain
3717 ImageMagick image types from `imagemagick-register-types'.
3719 **** With ImageMagick support, there are extra Image mode commands to
3720 resize and rotate images: `image-transform-fit-to-height',
3721 `image-transform-fit-to-width', `image-transform-set-rotation', and
3722 `image-transform-set-scale'.
3724 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3725 passes it to the mail user agent function. This argument specifies an
3726 action for returning to the caller after finishing with the mail. For
3727 example, this is used by Rmail to optionally delete a mail window.
3729 ** XML and HTML parsing
3730 If Emacs is compiled with libxml2 support, there are two new
3731 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3732 and `libxml-parse-xml-region' (which parses XML). Both return an
3733 Emacs Lisp parse tree.
3735 ** Networking and encryption changes
3737 *** `open-network-stream' can now be used to open an encrypted stream.
3738 It now accepts an optional `:type' parameter for initiating a TLS
3739 connection, directly or via STARTTLS. To do STARTTLS, additional
3740 parameters (`:end-of-command', `:success', `:capabilities-command')
3741 must also be supplied.
3743 *** New library gnutls.el.
3744 The new function `gnutls-available-p' returns non-nil if Emacs is
3745 built with GnuTLS support. The main entry points are
3746 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3747 these functions through `open-network-stream', because that can
3748 upgrade connections through STARTTLS opportunistically or use plain
3749 SSL, depending on your needs. For debugging, set `gnutls-log-level'
3752 *** New primitive `secure-hash' that supports many secure hash algorithms:
3753 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3754 sha1.el has been removed. The `sha1' feature is provided by default.
3758 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3760 ** Progress reporters can now "spin".
3761 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3762 now be nil, or omitted. This makes a "non-numeric" reporter. Each
3763 time you call `progress-reporter-update' on that progress reporter,
3764 with a nil or omitted VALUE argument, the reporter message is
3765 displayed with a "spinning bar".
3767 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
3768 being reverted, even if the buffer has a local `revert-buffer-function'.
3770 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3771 If delayed-warnings-list is non-nil, the command loop calls
3772 `delayed-warnings-hook' after `post-command-hook'. At present, this
3773 is only used by Emacs on some platforms to display warnings during
3774 startup, which might otherwise not be noticed. This uses the
3775 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
3777 ** rx.el has a new `group-n' construct for explicitly numbered groups.
3779 ** New function `make-composed-keymap' that constructs a new keymap
3780 from multiple input maps. You can use this to make a keymap that
3781 inherits from multiple maps, eg:
3782 (set-keymap-parent newmap (make-composed-keymap othermap parent))
3784 ** New function `string-prefix-p'.
3785 (This was actually added in Emacs 23.2 but was not advertised at the time.)
3787 ** New reader macro ## that stands for the empty symbol.
3788 This means that the empty symbol can now be read back. Also, #: by itself
3789 (when not immediately followed by a possible symbol character) stands for
3790 an empty uninterned symbol.
3792 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
3794 ** The following functions and variables are obsolete:
3796 *** `tooltip-use-echo-area' is obsolete.
3797 Rather than setting this to t, disable Tooltip mode instead.
3799 *** buffer-substring-filters is obsolete.
3800 Use `filter-buffer-substring-functions' instead.
3802 *** `byte-compile-disable-print-circle' is obsolete.
3804 *** `deferred-action-list' and `deferred-action-function' are obsolete.
3805 Use `post-command-hook' instead.
3807 *** `font-lock-maximum-size' is obsolete.
3810 * Changes in Emacs 24.1 on Non-Free Operating Systems
3812 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
3813 and also when HOME is set to C:\ by default.
3815 ** New configure.bat options
3817 *** --enable-checking builds Emacs with extra runtime checks.
3819 *** --distfiles specifies files to be included in binary distribution.
3821 *** --without-gnutls disables automatic GnuTLS detection.
3823 *** --lib for general library linkage, works with the USER_LIBS build variable.
3825 ** New make target `dist' to create binary distribution for MS Windows.
3827 ** The Lisp function `w32-default-color-map' is now obsolete.
3828 (It is only used internally in the Emacs C code.)
3830 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3831 reappear on mouse-over. (Requires OS X 10.6 or later.)
3833 ** On Mac OS X, dragging a file into Emacs visits the file, like on
3834 other platforms, rather than inserting its contents into the buffer.
3837 ----------------------------------------------------------------------
3838 This file is part of GNU Emacs.
3840 GNU Emacs is free software: you can redistribute it and/or modify
3841 it under the terms of the GNU General Public License as published by
3842 the Free Software Foundation, either version 3 of the License, or
3843 (at your option) any later version.
3845 GNU Emacs is distributed in the hope that it will be useful,
3846 but WITHOUT ANY WARRANTY; without even the implied warranty of
3847 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3848 GNU General Public License for more details.
3850 You should have received a copy of the GNU General Public License
3851 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
3856 paragraph-separate: "[
\f]*$"