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++.
427 *** New macro `cl-tagbody'.
430 *** letf is now just an alias for cl-letf.
434 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
435 Hence, you can now enable it independently from those modes, and from
436 `transient-mark-mode'.
439 *** `cua-highlight-region-shift-only' is now obsolete.
440 You can disable `transient-mark-mode' to get the same result.
442 *** CUA's rectangles can now be used via `cua-rectangle-mark-mode'.
447 *** Support for completion, ElDoc, and Flycheck has been added.
450 *** The current CFEngine syntax is parsed from "cf-promises -s json".
451 There is a fallback syntax available if you don't have cf-promises or
452 if your version doesn't support that option. See option `cfengine-cf-promises'.
455 ** Delete Selection mode can now be used without Transient Mark mode.
459 *** `desktop-auto-save-timeout' defines the number of seconds idle time
460 before auto-save of the desktop.
462 *** `desktop-restore-frames', enabled by default, allows saving and
463 restoring the frame/window configuration (frameset). Additional options
464 `desktop-restore-in-current-display', `desktop-restore-reuses-frames'
465 and `desktop-restore-forces-onscreen' offer further customization.
468 ** New Dired minor mode `dired-hide-details-mode' toggles whether details,
469 such as file ownership or permissions, are visible.
472 ** You can enable ElDoc inside the `eval-expression' minibuffer with:
473 (add-hook 'eval-expression-minibuffer-setup-hook 'eldoc-mode)
474 The results display in the mode line.
476 ** Electric Pair mode
478 *** New option `electric-pair-preserve-balance', enabled by default.
479 If non-nil, pairing/skipping only kicks in when that help the balance
480 of parentheses and quotes, i.e. the buffer should end up at least as
483 You can further control this behavior by adjusting the predicates
484 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
486 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
487 In `electric-pair-mode', the commands `backward-delete-char' and
488 `backward-delete-char-untabify' are now bound to electric variants
489 that delete the closer when invoked between adjacent pairs.
491 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
492 In `electric-pair-mode', inserting a newline between adjacent pairs
493 opens an extra newline after point, which is indented if
494 `electric-indent-mode' is also set.
496 *** New option `electric-pair-skip-whitespace', enabled by default.
497 This controls if skipping over closing delimiters should jump over any
498 whitespace slack. Setting it to `chomp' makes it delete this
499 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
501 *** New variables control the pairing in strings and comments.
502 You can customize `electric-pair-text-pairs' and
503 `electric-pair-text-syntax-table' to tweak pairing behavior inside
504 strings and comments.
506 ** New EPA option `epa-mail-aliases'.
507 You can set this to a list of alias expansions for keys to use
508 in `epa-mail-encrypt'.
510 If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
511 that means: when one of the recipients of the message being encrypted
512 is `foo@bar.com', encrypt the message for `foo@hello.org' instead.
514 If one element of the variable's value is ("foo@bar.com"),
515 that means: when one of the recipients of the message being encrypted
516 is `foo@bar.com', ignore that name as regards encryption.
517 This is useful to avoid a query when you have no key for that name.
520 ** New ERC option `erc-accidental-paste-threshold-seconds'.
521 If set to a number, this can be used to avoid accidentally pasting large
522 amounts of data into the ERC input.
525 ** New ERT macro `skip-unless' allows skipping ERT tests.
526 See the ERT manual for details.
531 *** `eshell' now supports visual subcommands and options.
532 Eshell has been able to handle "visual" commands (interactive,
533 non-line oriented commands such as top that require display
534 capabilities not provided by eshell) by running them in an Emacs
535 terminal emulator. See `eshell-visual-commands'.
537 This feature has been extended to subcommands and options that make a
538 usually line-oriented command a visual command. Typical examples are
539 "git log" and "git <command> --help", which display their output in a
540 pager by default. See `eshell-visual-subcommands' and
541 `eshell-visual-options'.
544 *** New Eshell-Tramp module.
545 External su and sudo commands are now the default; the internal,
546 Tramp-using variants can still be used by enabling the eshell-tramp
550 ** New F90 mode option `f90-smart-end-names'.
552 ** Icomplete is a bit more like Ido.
554 *** Key bindings to navigate through and select the completions.
556 *** The icomplete-separator is customizable, and its default has changed.
558 *** Removed `icomplete-show-key-bindings'.
560 *** Icomplete-mode by defaults applies to all forms of minibuffer completion.
561 (setq icomplete-with-completion-tables '(internal-complete-buffer))
562 will revert to the old behavior.
567 *** An Ido user manual is now included.
570 *** The option `ido-use-virtual-buffers' can now take the value `auto'.
571 This means to use virtual buffers if the current ido input does not match
575 *** The variable `ido-decorations' can optionally have two new elements,
576 which are the brackets to use around the sole remaining completion.
581 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
582 visit the next image file and the previous image file in the same
583 directory, respectively.
586 *** New commands to show specific frames of multi-frame images.
587 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
588 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
591 *** New commands to speed up, slow down, or reverse animation.
592 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
593 speed up and slow down the animation. `a r' (`image-reverse-speed')
594 to reverse it and `a 0' (`image-reset-speed') to reset it.
597 *** The command `image-mode-fit-frame' deletes other windows.
598 When toggling, it restores the frame's previous window configuration.
599 It also has an optional frame argument, which can be used by Lisp
600 callers to fit the image to a frame other than the selected frame.
604 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
605 will cycle through faces in `hi-lock-face-defaults' without prompting.
608 *** New global command `M-s h .' (`highlight-symbol-at-point')
609 highlights the symbol found near point without prompting,
610 using the next face automatically.
612 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
615 ** New Info face `info-index-match', used to highlight matches in index
616 entries displayed by `Info-index-next', `Info-virtual-index' and
622 *** New option `js-switch-indent-offset'.
625 *** Better indentation of multiple-variable declarations.
626 If a declaration spans several lines, variables on the following lines
627 are lined up to the first one.
630 *** Recognition and better indentation of continuations in array comprehensions.
633 ** MH-E has been updated to version 8.5 - see separate MH-E-NEWS file.
638 *** Font locking for texinfo comments and new keywords.
640 *** Completion in Octave file buffers.
644 *** Jump to definition.
646 *** Documentation lookup/search.
649 ** OPascal mode is the new name for Delphi mode
652 *** All delphi-* variables and functions have been renamed to opascal-*.
653 Obsolete aliases exist for those likely to have been used externally.
656 *** The option `delphi-newline-always-indents' has been removed.
657 Use `electric-indent-mode' instead.
660 *** The TAB key runs the standard `indent-for-tab-command', not `delphi-tab'.
664 *** The format of `archive-contents' files, generated by package
665 repositories, has changed to allow a new (fifth) element in the data
666 vectors, containing an associative list with extra properties.
668 *** `describe-package' buffer uses the `:url' extra property to
669 display a `Homepage' header, if it's present.
671 *** In the buffer produced by `describe-package', there are now buttons
672 listing the keywords related to that package. You can click on them
673 to see other packages related to any given keyword.
675 *** In the *Packages* buffer, `f' or the Package->Filter menu filters
676 the packages by a keyword.
679 ** In Prolog mode, `prolog-use-smie' has been removed,
680 along with the non-SMIE indentation code.
684 *** The new command `remember-notes' creates a buffer that is saved on
685 `kill-emacs'. You can think of it as a *scratch* buffer whose content
686 is preserved. In fact, it was designed as a replacement for *scratch*
687 buffer and can be used that way by setting `initial-buffer-choice' to
688 `remember-notes' and `remember-notes-buffer-name' to "*scratch*".
689 Without the second change, the *scratch* buffer will still be there
690 for notes that do not need to be preserved.
692 *** The Remember package can now store notes in separates files.
693 You can use the new function `remember-store-in-files' within the
694 `remember-handler-functions' option. See `remember-data-directory'
695 and `remember-directory-file-name-format' for new options related to
700 *** Customize `rmail-mbox-format' to influence some minor aspects of
701 how Rmail displays non-MIME messages.
704 *** The `unrmail' command now converts from BABYL to mboxrd format,
705 rather than mboxo. Customize `unrmail-mbox-format' to change this.
710 *** Improved syntax highlighting and indentation.
713 *** New `electric-indent-mode' integration.
716 *** New option `ruby-encoding-magic-comment-style'.
719 *** New option `ruby-custom-encoding-magic-comment-template'.
722 *** New option `ruby-align-to-stmt-keywords'.
725 *** New option `ruby-align-chained-calls'.
728 *** More Ruby file types have been added to `auto-mode-alist'.
730 ** Search and Replace
733 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
734 starts a symbol (identifier) incremental search forward with the
735 symbol found near point added to the search string initially.
738 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
739 and adds it to the search string.
741 *** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
742 between nil and the value of the option `search-invisible' (or `open'
745 *** `query-replace' skips invisible text when `search-invisible' is nil,
746 and opens overlays with hidden text when `search-invisible' is `open'.
749 *** A negative prefix arg of replacement commands replaces backward.
750 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
751 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
754 *** By default, prefix arguments do not now terminate Isearch mode.
755 Set `isearch-allow-prefix' to nil to restore old behavior.
758 *** More Isearch commands accept prefix arguments, namely
759 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
763 *** Word search now matches whitespace at the beginning/end
764 of the search string if it contains leading/trailing whitespace.
765 In an incremental word search or when using a non-nil LAX argument
766 of `word-search-regexp', the lax matching can also match part of
767 the first word (in addition to the lax matching of the last word).
768 The same rules are now applied to the symbol search with the difference
769 that it matches symbols, and non-symbol characters between symbols.
772 ** New SES command `ses-rename-cell' allows assignment of names to SES cells.
775 ** The shell.el option `explicit-bash-args' includes --noediting by default.
776 All non-ancient Bash versions support this option.
781 *** The SMIE indentation engine is now used by default - see `sh-use-smie'.
784 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
786 ** SMIE indentation can be customized via `smie-config'.
787 Emacs can learn the appropriate indentation settings if you provide it
788 with an indented sample file.
791 ** New Term mode option `term-suppress-hard-newline'.
794 ** Todo mode has been rewritten and enhanced.
795 The Todo mode user manual describes all commands and most user
796 options. To support some of these features, a new file format is
797 used, which is incompatible with the old format; however, you can
798 convert old todo and done item files to the new format on initializing
799 the first new todo file, or at any later time with the provided
800 conversion command. The previous version of todo-mode.el has been
801 renamed to otodo-mode.el and is now obsolete. New features include:
803 *** Support for multiple todo files and archive files of done items.
805 *** Renaming, reordering, moving, merging, and deleting categories.
807 *** Sortable tabular summaries of categories and the item types they contain.
809 *** Cross-category lists of items filtered by specific criteria.
811 *** More fine-grained interaction with the Emacs diary, by being able to
812 decide for each todo item whether it appears in the Fancy Diary display.
814 *** Highly flexible new item insertion and item editing.
816 *** Moving items between categories, storing done items in their category
817 or in archive files, undoing or unarchiving done items.
819 *** Reprioritizing items by inputting a numerical priority.
821 *** Extensive customizability of operation and display, including many faces.
826 *** `trace-function' and `trace-function-background' no longer prompt for
827 the output buffer. Unless you use a prefix argument, they output to
831 *** With a prefix argument, `trace-function' and `trace-function-background'
832 will prompt for a "context". This is a Lisp expression, whose value at the
833 time the function is entered/exited is printed along with the function's
839 *** The experimental url syntax for remote file names has been removed.
842 *** New connection method "adb", which allows to access Android
843 devices by the Android Debug Bridge. The variable `tramp-adb-program'
844 can be used to adapt the path of the "adb" program, if needed.
847 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
848 "scpc" and "rsyncc" are discontinued. The ssh option
849 "ControlMaster=auto" is set automatically in all ssh-based methods,
850 when possible. See `tramp-use-ssh-controlmaster-options'.
853 *** Handlers for `file-acl' and `set-file-acl' for remote machines
854 which support POSIX ACLs.
857 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
858 for remote machines which support filesystem notifications.
860 ** New command `url-cookie-list' displays all the current cookies, and
861 allows deleting selected cookies.
863 ** VC and related modes
866 *** In VC directory mode, `D' displays diffs between VC-controlled
867 whole tree revisions.
870 *** In VC directory mode, `L' lists the change log for the current VC
871 controlled tree in a window.
874 *** In VC directory mode, `I' shows a log of changes that will be
875 received with a pull operation.
878 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
879 under current version control system. When called with a prefix
880 argument, you can remove a file from the ignored file list.
885 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
888 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
891 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
892 are obsolete. Customize the `woman-*' faces instead.
896 *** Iswitchb is made obsolete by icomplete-mode.
898 *** longlines.el is obsolete; use visual-line-mode instead.
904 *** terminal.el is obsolete; use term.el instead.
907 *** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.
910 *** xesam.el is obsolete, because the XESAM project has been canceled.
913 *** yow.el is obsolete; use fortune.el or cookie1.el instead.
916 *** The Info-edit command is obsolete. Editing Info nodes by hand
917 has not been relevant for some time.
920 * New Modes and Packages in Emacs 24.4
923 ** New package `eww' is a built-in web browser.
924 It is only available if Emacs is compiled with libxml2 support.
926 ** New minor mode `superword-mode'.
927 This overrides the default word motion commands to treat "symbol_words"
928 as a single word, similar to what `subword-mode' does.
931 ** New package nadvice.el offers lighter-weight advice facilities.
934 *** add-function/remove-function, which can be used to add/remove code on any
935 function-carrying place, such as process-filters or `<foo>-function' hooks.
937 *** advice-add/advice-remove to add/remove a piece of advice on a named
938 function, much like `defadvice' does.
940 ** New package frameset.el.
941 It provides a set of operations to save a frameset (the state of all
942 or a subset of the existing frames and windows, somewhat similar to a
943 frame configuration), both in-session and persistently, and restore it
944 at some point in the future.
947 ** New package filenotify.el provides an interface for file system
948 notifications. It requires that Emacs be compiled with one of the
949 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
952 * Incompatible Lisp Changes in Emacs 24.4
955 ** `kill-region' has lost its `yank-handler' optional argument.
958 ** `(input-pending-p)' no longer runs other timers that are ready to run.
959 The new optional CHECK-TIMERS parameter allows for the prior behavior.
962 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
965 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
966 Some languages match those as »...«, and others as «...», so it is
967 better for Emacs to stay neutral by default.
970 ** In compiled Lisp files, the header no longer includes a timestamp.
973 ** The default file coding for Emacs Lisp files is now utf-8.
974 (See `file-coding-system-alist'.) In most cases, this change is
975 transparent, but files that contain unusual characters without
976 specifying an explicit coding system may fail to load with obscure
977 errors. You should either convert them to utf-8 or add an explicit
981 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
982 It used to disable the minor mode, major mode, and text-property keymaps,
983 whereas now it simply has higher precedence.
985 ** Default process filters and sentinels are not nil any more.
986 Instead they default to a function that does what the nil value used to do.
989 ** `read-event' does not return decoded chars in ttys any more.
990 As was the case in Emacs 22 and before, the decoding of terminal
991 input, according to `keyboard-coding-system', is not performed in
992 `read-event' any more. But unlike in Emacs 22, this decoding is still
993 done before input-decode-map, function-key-map, etc.
996 ** The option `inhibit-local-menu-bar-menus' has been removed.
999 ** Frame-local variables that affect redisplay do not work any more.
1000 More specifically, redisplay does not bother to check for a frame-local
1001 value when looking up variables.
1004 ** nil and "unbound" are indistinguishable in `symbol-function'.
1005 `symbol-function' does not signal a `void-function' error any more.
1006 To determine if a symbol's function definition is void, use `fboundp'.
1009 ** `defadvice' does not honor the `freeze' flag and cannot advise
1010 special-forms any more.
1013 ** `dolist' no longer binds VAR while evaluating the RESULT form,
1014 when lexical binding is enabled. Previously, VAR was bound to nil,
1015 which often led to spurious unused-variable warnings.
1018 ** The return value of `backup-buffer' has changed.
1019 The second argument is no longer an SELinux context, instead it is an
1020 alist of extended attributes as returned by the new function
1021 `file-extended-attributes'. The attributes can be applied to another
1022 file using `set-file-extended-attributes'.
1025 ** By default `copy-file' no longer copies file permission bits to an
1026 existing destination; and it sets the file permission bits of a newly
1027 created destination to those of the source, masked by the default file
1028 permissions. To copy the file permission bits, pass t as the
1029 PRESERVE-PERMISSIONS argument of `copy-file'.
1032 ** `visited-file-modtime' now returns -1 for nonexistent files.
1033 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
1034 in the presence of files with negative time stamps.
1037 ** The cars of the elements in `interpreter-mode-alist' are now
1038 treated as regexps rather than literal strings.
1041 * Lisp Changes in Emacs 24.4
1044 ** The second argument of `eval' can now specify a lexical environment.
1047 ** New functions `special-form-p' and `macrop'.
1049 ** New macro `define-alternatives' can be used to define generic commands.
1050 Generic commands are interactive functions whose implementation can be
1051 selected among several alternatives, as a matter of user preference.
1053 ** The `defalias-fset-function' property lets you catch `defalias'
1054 calls, and redirect them to your own function, instead of `fset'.
1057 ** New variable `enable-dir-local-variables'.
1058 Directory-local variables are ignored if this is nil. This may be
1059 useful for modes that want to ignore directory-locals while still
1060 respecting file-local variables.
1063 ** New function `get-pos-property'.
1065 ** Completion changes
1067 *** The separator for `completing-read-multiple' can now be a regexp.
1068 The default separator has been changed to allow surrounding spaces
1071 *** The `common-substring' arg of `display-completion-list' is obsolete.
1072 Either use `completion-all-completions', which returns highlighted
1073 strings (including for partial or substring completion), or call
1074 `completion-hilit-commonality' to add the highlight.
1076 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1077 let you enable symbol prettification (replacing a string like "lambda" with
1078 the Greek lambda character).
1083 *** Functions to pop up menus and dialogs now work on all terminals,
1084 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1085 `message-box', `yes-or-no-p', etc.
1087 The function `display-popup-menus-p' will now return non-nil for a
1088 display or frame whenever a mouse is supported on that display or
1091 *** New hook `tty-setup-hook'.
1095 *** New display action function `display-buffer-no-window' to not
1096 display the buffer in a window.
1098 *** New display action alist entry `allow-no-window' to indicate the
1099 caller of `display-buffer' is ready to handle the case of not
1100 displaying the buffer in a window.
1102 ** New hook `pre-redisplay-function'.
1105 ** New bool-vector set operation functions
1106 *** `bool-vector-exclusive-or'
1107 *** `bool-vector-union'
1108 *** `bool-vector-intersection'
1109 *** `bool-vector-set-difference'
1110 *** `bool-vector-not'
1111 *** `bool-vector-subsetp'
1112 *** `bool-vector-count-consecutive'
1113 *** `bool-vector-count-population'
1116 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1118 ** Error-handling changes
1121 *** New function `define-error'.
1124 *** `with-demoted-errors' takes an additional argument `format'.
1127 ** New macro `with-eval-after-load'.
1128 This is like the old `eval-after-load', but better behaved.
1131 ** New library subr-x.el with miscellaneous small utility functions
1132 *** `hash-table-keys'
1133 *** `hash-table-values'
1134 *** `string-blank-p'
1135 *** `string-empty-p'
1137 *** `string-reverse'
1138 *** `string-trim-left'
1139 *** `string-trim-right'
1141 *** `string-remove-prefix'
1142 *** `string-remove-suffix'
1145 ** Obsoleted functions
1148 *** `lisp-complete-symbol'
1149 *** `field-complete'
1150 *** `minibuffer-completion-contents'
1151 *** `isearch-nonincremental-exit-minibuffer'
1152 *** `isearch-filter-visible'
1153 *** `generic-make-keywords-list'
1154 *** `get-upcase-table' (use `case-table-get-table' instead).
1156 ** `with-wrapper-hook' is obsoleted by `add-function'.
1157 The few hooks that used with-wrapper-hook are replaced as follows:
1158 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1159 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1160 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1163 ** `byte-compile-interactive-only-functions' is now obsolete.
1164 To specify that a command should only be called interactively, give it
1165 a non-nil `interactive-only' property.
1168 ** `split-string' now takes an optional argument TRIM.
1169 The value, if non-nil, is a regexp that specifies what to trim from
1170 the start and end of each substring.
1173 ** New function `string-suffix-p'.
1175 ** File-handling changes
1178 *** Support for filesystem notifications.
1179 Emacs now supports notifications of filesystem changes, such as
1180 creation, modification, and deletion of files. This requires the
1181 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1182 MS-Windows systems, this is supported for Windows XP and newer
1186 *** The 9th element returned by `file-attributes' is now unspecified.
1187 Formerly, it was t if the file's gid would change if file were deleted
1188 and recreated. This value has been inaccurate for years on many
1189 platforms, and nobody seems to have noticed or cared.
1192 *** The 6th argument to `copy-file' has been renamed to
1193 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1194 Unix file permission bits as well as SELinux context.
1197 *** The function `file-ownership-preserved-p' now has an optional
1198 argument GROUP which causes it check for file group too. This can be
1199 used in place of the 9th element of `file-attributes'.
1202 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1203 argument, with the same interpretation as the returned value of
1204 `visited-file-modtime'.
1206 ** Autorevert changes
1209 *** If Emacs is compiled with file notification support, notifications
1210 are used instead of checking the time stamp of the files. You can
1211 disable this by setting the user option `auto-revert-use-notify' to
1212 nil. Alternatively, a regular expression of directories to be
1213 excluded from file notifications can be specified by
1214 `auto-revert-notify-exclude-dir-regexp'.
1217 *** The new user option `auto-revert-remote-files' enables reversion
1218 of remote files when set to non-nil.
1222 *** The function `face-spec-set' is now like `setq' for face specs.
1223 Its third arg now accepts values specifying a face spec type (defface,
1224 custom, or override spec), and the relevant spec is set accordingly.
1227 *** New function `add-face-text-property', which can be used to
1228 conveniently prepend/append new face properties.
1230 *** Face specs set via Custom themes now replace the `defface' spec
1231 rather than inheriting from it (as do face specs set via Customize).
1233 *** New face characteristic (supports :underline (:style wave))
1234 specifies whether or not the terminal can display a wavy line.
1237 *** New face spec attribute :distant-foreground
1238 specifies foreground to use if background color is near the foreground
1239 color that would otherwise have been used.
1244 *** `image-animated-p' is now `image-multi-frame-p'.
1245 It returns non-nil for any image that contains multiple frames,
1246 whether or not it specifies a frame delay.
1249 *** New variable `image-default-frame-delay' gives the frame delay for
1250 animated images which do not specify a frame delay.
1253 *** New functions `image-current-frame' and `image-show-frame' for getting
1254 and setting the current frame of a multi-frame image.
1259 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1260 **** object-name -> eieio-object-name
1261 **** object-class -> eieio-object-class
1262 **** object-class-fast -> eieio--object-class
1263 **** object-class-name -> eieio-object-class-name
1264 **** object-name-string -> eieio-object-name-string
1265 **** object-num-slots -> eieio--object-num-slots
1266 **** object-set-name-string -> eieio-object-set-name-string
1267 **** class-of -> eieio-object-class
1268 **** class-name -> eieio-class-name
1269 **** class-parent -> eieio-class-parent
1270 **** class-parents -> eieio-class-parents
1271 **** class-parents-fast -> eieio-class-parents-fast
1272 **** class-children -> eieio-class-children
1273 **** class-num-slots -> eieio--class-num-slots
1274 **** class-precedence-list -> eieio-class-precedence-list
1275 **** class-direct-subclasses -> eieio-class-children
1276 **** class-direct-superclasses -> eieio-class-parents
1278 ** Changes in encoding and decoding of text
1281 *** New coding-system `prefer-utf-8'.
1282 This is like `undecided' but prefers UTF-8 on decoding if the text to
1283 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1284 any non-ASCII characters are automatically encoded as UTF-8.
1287 *** New attributes of coding-systems whose type is `undecided'.
1288 Two new attributes, `:inhibit-null-byte-detection' and
1289 `:inhibit-iso-escape-detection', determine how to detect encoding of
1290 text that includes null bytes and ISO-2022 escape sequences,
1291 respectively. Each of these attributes can be either nil, zero, or
1292 t. If it is t, decoding text ignores null bytes and, respectively,
1293 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1294 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1295 text is encoded in one of the ISO-2022 encodings, such as
1296 iso-2022-7bit. If the value is zero, Emacs consults the variables
1297 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1299 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1300 UTF-8 encoding and decoding, whenever possible.
1302 These attributes are only meaningful for coding-systems of type
1303 `undecided'. (The type of a coding-system is determined by its
1304 `:coding-type' attribute and can be accessed by calling the
1305 `coding-system-type' function.)
1308 ** The `time-to-seconds' alias to `float-time' is no longer marked obsolete.
1311 ** New functions `group-gid' and `group-real-gid'.
1314 ** The spelling of the rx.el category `chinese-two-byte' has been
1315 corrected (the first 'e' was missing).
1318 ** Minor internal changes to the details of lock files.
1319 The lock for DIR/FILE is now _always_ DIR/.#FILE.
1320 If DIR/.#FILE already exists and is not an Emacs lock file,
1321 Emacs makes no attempt to lock DIR/FILE. (Previously, it fell back to
1322 numbered lock files DIR/.#FILE.0...).
1323 On file systems that do not support symbolic links, the lock is now a
1324 regular file with contents being what would have been in the symlink.
1326 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1329 *** The package descriptor and name of global variables, constants,
1330 and functions should be separated by two hyphens if the symbol is not
1331 meant to be used by other packages.
1334 * Changes in Emacs 24.4 on Non-Free Operating Systems
1337 ** The procedure for building Emacs on MS-Windows has changed.
1338 It is now built by running the same configure script as on all other
1339 platforms. This requires the MSYS environment and MinGW development
1340 tools. See the updated instructions in nt/INSTALL for details.
1342 Using the Posix configure script and Makefile's also means a change in
1343 the directory structure of the Emacs installation on Windows. It is
1344 now the same as on GNU and Unix systems. In particular, the auxiliary
1345 programs, such as cmdproxy.exe and hexl.exe, are in
1346 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1347 version), version-independent site-lisp is in share/emacs/site-lisp,
1348 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1349 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1350 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1351 directories and will find the files in there automatically; there's no
1352 need to set any variables due to this change.)
1355 ** Emacs on Windows 2000 and later can now access files and directories
1356 whose names cannot be encoded in the current system codepage.
1358 The new variable `w32-unicode-filenames' controls this feature: if it
1359 is t, Emacs uses Unicode APIs to pass file names to system calls,
1360 which lifts the limitation of file names to the current locale.
1363 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1364 The backtrace is written to the 'emacs_backtrace.txt' file in the
1365 directory where Emacs was running.
1368 ** The variable `buffer-file-type' is no longer supported.
1369 Setting it has no effect, and %t in the mode-line format is ignored.
1370 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1371 modifying it has no effect.
1374 ** Lock files now work on MS-Windows.
1375 This helps to prevent losing your edits if the same file is being
1376 edited in another Emacs session or by another user. See the node
1377 "Interlocking" in the Emacs User Manual for the details. To disable
1378 file locking, customize `create-lockfiles' to nil.
1380 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1381 GNUstep and Mac OS X 10.4 use the old font backend.
1382 To use the old backend by default, do on the command line:
1383 % defaults write org.gnu.Emacs FontBackend ns
1385 ** Improved fullscreen support on Mac OS X.
1386 Emacs supports both native (Mac OS X 10.7 and newer) and "old style" fullscreen.
1387 Customize `ns-use-native-fullscreen' to change the style.
1388 For Mac OS X 10.7 and newer, native is the default.
1390 ** On Mac OS X 10.7 and newer, Emacs uses sRGB colorspace by default.
1391 Customize `ns-use-srgb-colorspace' to disable this. Note that this
1392 does not apply to images.
1395 * Installation Changes in Emacs 24.3
1397 ** The default X toolkit is now Gtk+ version 3.
1398 If you don't pass `--with-x-toolkit' to configure, or if you use
1399 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1400 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1401 You can explicitly require a specific version by passing
1402 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1404 ** New configure option `--enable-link-time-optimization', to utilize
1405 an appropriate feature provided by GCC since version 4.5.0.
1407 ** New configure option `--without-all' to disable most of the optional
1408 features (image support, etc.) that are normally enabled by default.
1410 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1411 Emacs). If building with GCC, this enables compile-time checks that
1412 warn/give errors about possibly-questionable C code. On a recent GNU
1413 system there should be no warnings; on older and on non-GNU systems
1414 the results may be useful to developers.
1416 ** The configure option `--enable-use-lisp-union-type' has been
1417 renamed to `--enable-check-lisp-object-type', as the resulting
1418 Lisp_Object type no longer uses a union to implement the compile time
1419 check that this option enables.
1421 ** The configure option `--disable-maintainer-mode' has been removed,
1422 as it was confusingly-named and rarely useful.
1424 ** The configure options `--program-prefix', `--program-suffix', and
1425 `--program-transform-name' apply to more than just the installed
1426 binaries. Now they also affect the man pages, icons, and the
1427 etc/emacs.desktop file; but not the info pages, since this would break
1428 links between the various manuals.
1430 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1431 overwriting "emacs" in the installation bin/ directory with a link
1434 ** Emacs uses libtinfo in preference to libncurses, if available.
1436 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1437 /usr/pkg/lib to the linker search path. You must add them yourself if
1440 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1441 (from the bin and libexec directories, respectively). The former is
1442 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1445 * Startup Changes in Emacs 24.3
1447 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1448 lisp/ directory. There should not be any there anyway. If you have
1449 been adding them there, put them somewhere else; e.g., site-lisp.
1451 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1454 * Changes in Emacs 24.3
1458 *** `C-h f' (`describe-function') can now perform autoloading.
1459 When this command is called for an autoloaded function whose docstring
1460 contains a key substitution construct, that function's library is
1461 automatically loaded, so that the documentation can be shown
1462 correctly. To disable this, set `help-enable-auto-load' to nil.
1464 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1465 even after their associated libraries have been loaded (and the
1466 autoloads have been redefined as functions).
1470 *** Images displayed via ImageMagick now support transparency and the
1471 :background image specification property.
1473 *** When available, ImageMagick support is automatically enabled.
1474 It is no longer necessary to call `imagemagick-register-types'
1475 explicitly to install ImageMagick image types; that function is called
1476 automatically at startup, or when customizing an imagemagick- option.
1478 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1479 ImageMagick to view images. (You must call `imagemagick-register-types'
1480 afterwards if you do not use customize to change this.)
1482 *** The new variable `imagemagick-enabled-types' also affects which
1483 ImageMagick types are treated as images. The function
1484 `imagemagick-filter-types' returns the list of types that will be
1489 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1490 next and previous path separator, respectively.
1492 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1493 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1494 non-nil before enabling the mode.
1498 *** New option `mode-line-default-help-echo' specifies the help text
1499 (shown in a tooltip or in the echo area) for any part of the mode line
1500 that does not have its own specialized help text.
1502 *** You can now click mouse-3 in the coding system indicator to invoke
1503 `set-buffer-file-coding-system'.
1505 ** Server and client
1507 *** emacsclient now obeys string values for `initial-buffer-choice',
1508 if it is told to open a new frame without specifying any file to visit
1509 or expression to evaluate.
1511 *** New option `server-auth-key' specifies a shared server key.
1513 ** Emacs now generates backtraces on fatal errors.
1514 On encountering a fatal error, Emacs now outputs a textual description
1515 of the fatal signal, and a short backtrace on platforms like glibc
1516 that support backtraces.
1518 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1519 This minor mode replaces `toggle-read-only', which is now obsolete.
1521 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1522 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1523 respectively, without exiting from the prompt.
1525 ** In the Package Menu, newly-available packages are listed as "new",
1526 and sorted above the other "available" packages by default.
1528 ** If your Emacs was built from a repository checkout, the new variable
1529 `emacs-bzr-version' contains information about the bzr revision used.
1531 ** New option `create-lockfiles' specifies usage of lockfiles.
1532 It defaults to t. Changing it to nil inhibits the creation of lock
1533 files (use this with caution).
1535 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1536 variables on remote hosts.
1538 ** The entry for PCL-CVS has been removed from the Tools menu.
1539 The PCL-CVS commands are still available via the keyboard.
1541 ** Using "unibyte: t" in Lisp source files is obsolete.
1542 Use "coding: raw-text" instead.
1544 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1545 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1546 The previous binding, introduced in Emacs 24.1, was a mistake, because
1547 `C-c LETTER' bindings are reserved for user customizations.
1549 ** Internationalization
1551 *** New language environment: Persian.
1553 *** New input method `vietnamese-vni'.
1555 ** Nextstep (GNUstep / Mac OS X) port
1557 *** Support for fullscreen and the frame parameter fullscreen.
1559 *** A file dialog is used for open/save operations initiated from the
1563 * Editing Changes in Emacs 24.3
1565 ** Search and Replace
1567 *** Non-regexp Isearch now performs "lax" space matching.
1568 Each sequence of spaces in the supplied search string may match any
1569 sequence of one or more whitespace characters, as specified by the
1570 variable `search-whitespace-regexp'. (This variable is also used by a
1571 similar existing feature for regexp Isearch.)
1573 *** New Isearch command `M-s SPC' toggles lax space matching.
1574 This applies to both ordinary and regexp Isearch.
1576 *** New option `replace-lax-whitespace'.
1577 If non-nil, `query-replace' uses flexible whitespace matching too.
1580 *** Global `M-s _' starts a symbol (identifier) incremental search,
1581 and `M-s _' in Isearch toggles symbol search mode.
1582 `M-s c' in Isearch toggles search case-sensitivity.
1584 ** Navigation commands
1586 *** New binding `M-g c' for `goto-char'.
1588 *** New binding `M-g TAB' for `move-to-column'.
1590 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1591 interactively with no prefix arg. Previously, it moved to column 1.
1593 ** New option `yank-handled-properties' allows processing of text
1594 properties on yanked text, in ways that are more general than just
1595 removing them (as is done by `yank-excluded-properties').
1597 ** New option `delete-trailing-lines' specifies whether
1598 M-x delete-trailing-whitespace should delete trailing lines at the end
1599 of the buffer. It defaults to t.
1601 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1603 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1604 `ucs-insert' is now an obsolete alias for `insert-char'.
1606 ** The `z' key no longer has a binding in most special modes.
1607 It used to be bound to `kill-this-buffer', but `z' is too easy to
1610 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1611 It copies the region-rectangle as the last rectangle kill.
1615 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1617 *** New option `register-separator' specifies the register containing
1618 the text to put between collected texts for use with
1619 M-x append-to-register and M-x prepend-to-register.
1622 * Changes in Specialized Modes and Packages in Emacs 24.3
1624 ** Common Lisp emulation (CL)
1626 *** CL's main entry is now (require 'cl-lib).
1627 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1628 i.e., all its definitions have the "cl-" prefix (and internal definitions
1629 use the "cl--" prefix).
1631 If `cl' provided a feature under the name `foo', then `cl-lib'
1632 provides it under the name `cl-foo' instead; with the exceptions of the
1633 few `cl' definitions that had to use `foo*' to avoid conflicts with
1634 pre-existing Elisp entities. These have been renamed to `cl-foo'
1635 rather than `cl-foo*'.
1637 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1638 provide the old, non-prefixed names. Some exceptions are listed below:
1640 *** `cl-flet' is not like `flet' (which is deprecated).
1641 Instead it obeys the behavior of Common-Lisp's `flet'.
1642 In particular, in cl-flet function definitions are lexically scoped,
1643 whereas in flet the scoping is dynamic.
1645 *** `cl-labels' is slightly different from `labels'.
1646 The difference is that it relies on the `lexical-binding' machinery
1647 (as opposed to the `lexical-let' machinery used previously) to capture
1648 definitions in closures, so such closures will only work if `lexical-binding'
1651 *** `cl-letf' is not exactly like `letf'.
1652 The only difference is in details that relate to some deprecated usage
1653 of `symbol-function' in place forms.
1655 *** `progv' was rewritten to use the `let' machinery.
1656 A side effect is that variables without corresponding values are bound
1657 to nil rather than being made unbound.
1659 *** The following methods of extending `setf' are obsolete
1660 (use features from gv.el instead):
1661 `define-modify-macro' (use `gv-letplace')
1662 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1663 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1664 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1668 *** Changes are now highlighted using the same color scheme as in
1669 modern VCSes. Deletions are displayed in red (new faces
1670 `diff-refine-removed' and `smerge-refined-removed', and new definition
1671 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1672 and `smerge-refined-added', and new definition of `diff-added').
1674 *** The variable `diff-use-changed-face' defines whether to use the
1675 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1676 changes in context diffs.
1678 *** The new command `diff-delete-trailing-whitespace' removes trailing
1679 whitespace introduced by a diff.
1681 ** Ediff now uses the same color scheme as Diff mode.
1685 A new version of python.el, which provides several new features, including:
1686 per-buffer shells, better indentation, Python 3 support, and improved
1687 shell-interaction compatible with iPython (and virtually any other
1690 *** Some user options have been replaced/renamed, including (old -> new):
1691 **** python-indent -> python-indent-offset
1692 **** python-guess-indent -> python-indent-guess-indent-offset
1693 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1694 **** python-use-skeletons -> python-skeleton-autoinsert
1696 *** Some user options have been removed, including:
1698 **** `python-indent-string-contents': Strings are never indented.
1700 **** `python-honour-comment-indentation':
1701 Comments are always considered as indentation markers.
1703 **** `python-continuation-offset': Indentation is automatically
1704 calculated in a pep8 compliant way depending on the context.
1706 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1707 Have no direct mapping as the shell interaction is completely different.
1709 **** `python-python-command', `python-jython-command':
1710 Replaced by `python-shell-interpreter'.
1712 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1713 `python-pdbtrack-minor-mode-string', `python-source-modes':
1716 *** Some commands have been replaced (old -> new):
1717 **** python-insert-class -> python-skeleton-class
1718 **** python-insert-def -> python-skeleton-def
1719 **** python-insert-for -> python-skeleton-for
1720 **** python-insert-if -> python-skeleton-if
1721 **** python-insert-try/except -> python-skeleton-try
1722 **** python-insert-try/finally -> python-skeleton-try
1723 **** python-insert-while -> python-skeleton-while
1724 **** python-find-function -> python-nav-jump-to-defun
1725 **** python-next-statement -> python-nav-forward-sentence
1726 **** python-previous-statement -> python-nav-backward-sentence
1727 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1728 **** python-end-of-defun-function -> python-nav-end-of-defun
1729 **** python-send-buffer -> python-shell-send-buffer
1730 **** python-send-defun -> python-shell-send-defun
1731 **** python-send-region -> python-shell-send-region
1732 **** python-send-region-and-go -> emulate with python-shell-send-region
1733 and python-shell-switch-to-shell
1734 **** python-send-string -> python-shell-send-string
1735 **** python-switch-to-python -> python-shell-switch-to-shell
1736 **** python-describe-symbol -> python-eldoc-at-point
1740 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1742 *** The D-Bus object manager interface is implemented.
1744 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
1745 if their value does not fit into Emacs's integer range.
1747 *** The function `dbus-call-method' is now non-blocking.
1748 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
1750 *** Signals can also be sent as unicast messages.
1752 *** The argument list of `dbus-register-signal' has been extended,
1753 according to the new match rule types of D-Bus.
1755 *** `dbus-init-bus' supports private connections.
1757 *** There is a new function `dbus-setenv'.
1759 ** `desktop-path' no longer includes the "." directory.
1760 Desktop files are now located in ~/.emacs.d by default.
1764 *** `dired-do-async-shell-command' executes each file sequentially
1765 if the command ends in `;' (when operating on multiple files).
1766 Otherwise, it executes the command on each file in parallel.
1768 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1769 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
1772 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
1773 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
1774 mark/unmark/flag all files in the active region.
1776 *** The minibuffer default for `=' (`dired-diff') has changed.
1777 It is now the backup file for the file at point, if one exists.
1778 In Transient Mark mode the default is the file at the active mark.
1780 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1781 The global binding for `M-=', `count-words-region' is in effect.
1785 *** New module "notifications", which can send a notification when you
1786 receive a private message or your nickname is mentioned.
1788 *** ERC will look up server/channel names via auth-source and use any
1791 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1792 only applies to messages sent by lurkers.
1794 ** reStructuredText mode
1796 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1797 fontification, comment handling, and customization have all been revised
1800 *** Support for `imenu' and `which-function-mode'.
1802 *** The reStructuredText syntax is more closely covered.
1803 Sphinx support has been improved.
1805 *** `rst-insert-list' inserts new list or continues existing lists.
1807 *** A negative prefix argument always works for `rst-adjust'.
1809 *** The window configuration is reset after displaying a TOC.
1811 *** The constant `rst-version' describes the rst.el package version.
1815 *** Support for percent literals and recognition of regular expressions
1816 in method calls without parentheses with more methods, including Cucumber
1819 *** Improved syntax highlighting and indentation.
1821 *** New command `ruby-toggle-block', bound to `C-c {'.
1823 *** Some non-standard keybindings/commands have been removed:
1825 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
1827 **** `ruby-mark-defun'; use `mark-defun'.
1829 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1830 appropriate settings for the variables `beginning-of-defun-function'
1831 and `end-of-defun-function'.
1833 **** Non-standard keybindings for `backward-kill-word', `comment-region',
1834 `reindent-then-newline-and-indent' and `newline' have been removed.
1836 ** Shell Script mode
1838 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1840 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1842 *** `sh-use-smie' lets you choose a new indentation and navigation code.
1846 *** The free software compiler GHDL is supported (and now the default).
1848 *** Support for the VHDL-AMS packages has been added/updated.
1850 *** Updated to the 2002 revision of the VHDL standard.
1852 *** Accepts \r and \f as whitespace.
1856 *** The faces used by Apropos are now directly customizable.
1857 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1858 see the `apropos' Custom group for details.
1860 *** The old options whose values specified faces to use have been removed
1861 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1865 *** This package has been rewritten to use Tabulated List mode.
1867 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
1868 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1872 *** Algebraic simplification mode is now the default.
1873 To restrict to the limited simplifications given by the former
1874 default simplification mode, use `m I'.
1878 *** You can customize the header text that appears above each calendar month.
1879 See the variable `calendar-month-header'.
1881 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
1883 *** The calendars produced by cal-html include holidays.
1884 Customize `cal-html-holidays' to change this.
1888 *** The major modes from the parser generators "Bovine" and "Wisent"
1889 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1890 are in `auto-mode-alist', and the corresponding manuals are included.
1894 **** Menu support for the "Configuration" feature. This allows users to
1895 choose the active configuration (such as debug or install) from the menu.
1897 **** New command `ede-set' to interactively set project-local variables.
1899 **** Support for compiling, debugging, and running in "generic" projects.
1901 **** Autoconf editing support for M4 macros with complex arguments.
1903 **** Compilation support for the "linux" project type.
1905 **** "simple" projects have been removed; use "generic" projects instead.
1909 **** Support for parsing #include statements inside a namespace in C/C++.
1911 **** Improved support for 'extern "C"' declarations in C/C++.
1913 **** The ability to ignore more common special C/C++ preprocessor symbols,
1914 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1915 If available, include cdefs.h as an additional source of preprocessor symbols.
1917 **** Improved C/C++ function pointer parsing.
1919 **** In Python, support for converting imports to include file names.
1921 **** Ability to dynamically determine the Python load path.
1923 **** Support for the Python 'WITH' and 'AT' keywords.
1925 **** Improved tooltip completion.
1929 **** The SRecode manual is now included.
1931 **** Tag generation supports constructor/destructor settings and system
1932 include differentiation.
1934 **** Addition of 'Framework' support: Frameworks are specified when a
1935 particular kind of library (such as Android) is needed in a common language
1938 **** Support for nested templates and let variables override based on priority.
1940 **** Support for merging tables from multiple related modes, such as
1941 default -> c++ -> arduino.
1943 ** Compile has a new option `compilation-always-kill'.
1947 *** `custom-reset-button-menu' now defaults to t.
1949 *** Non-option variables are never matched in `customize-apropos' and
1950 `customize-apropos-options' (i.e., the prefix argument does nothing for
1951 these commands now).
1955 *** The variables `term-default-fg-color' and `term-default-bg-color'
1956 are now deprecated in favor of the customizable face `term'.
1958 *** You can customize how to display ANSI terminal colors and styles
1959 by customizing the corresponding `term-color-<COLOR>',
1960 `term-color-underline' and `term-color-bold' faces.
1964 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
1966 *** Remote processes are now also supported on remote MS-Windows hosts.
1970 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1971 Previously, this slot stored semicolon-separated attribute-value pairs
1972 appended to some imap URLs, but this is not compatible with RFC 3986.
1973 So now the `filename' slot stores the entire path and query components,
1974 and the `attributes' slot is always nil.
1976 *** New function `url-encode-url' for encoding a URI string.
1977 The `url-retrieve' function now uses this to encode its URL argument,
1978 in case that is not properly encoded.
1980 ** notifications.el supports now version 1.2 of the Notifications API.
1981 The function `notifications-get-capabilities' returns the supported
1984 ** Flymake uses fringe bitmaps to indicate errors and warnings.
1985 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1986 `flymake-warning-bitmap'.
1988 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1989 specifying URL types that should be converted to remote file names at
1990 the FFAP prompt. The default is now '("ftp").
1992 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
1993 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
1995 ** New option `mouse-avoidance-banish-position' specifies where the
1996 `banish' mouse avoidance setting moves the mouse.
1998 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1999 closing brackets to be aligned with the line of the opening bracket.
2001 ** In Proced mode, new command `proced-renice' renices marked processes.
2003 ** New option `async-shell-command-buffer' specifies the buffer to use
2004 for a new asynchronous `shell-command' when the default output buffer
2005 `*Async Shell Command*' is already in use.
2007 ** SQL mode has a new option `sql-db2-escape-newlines'.
2008 If non-nil, newlines sent to the command interpreter will be escaped
2009 by a backslash. The default does not escape the newlines and assumes
2010 that the sql statement will be terminated by a semicolon.
2012 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
2013 (and modes that derive from it), sorts the column at point, or the Nth
2014 column if a numeric prefix argument is given.
2016 ** `which-func-modes' now defaults to t, so Which Function mode, when
2017 enabled, applies to all applicable major modes.
2019 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
2022 ** Follow mode no longer works by using advice.
2023 The option `follow-intercept-processes' has been removed.
2025 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
2027 ** Hooks renamed to avoid obsolete "-hooks" suffix:
2028 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
2029 *** semantic-change-hooks -> semantic-change-functions
2030 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
2031 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
2032 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
2033 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
2034 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
2035 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
2036 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
2037 *** rcirc-activity-hooks -> rcirc-activity-functions
2038 *** rcirc-print-hooks -> rcirc-print-functions
2039 *** dbus-event-error-hooks -> dbus-event-error-functions
2040 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
2041 *** checkdoc-style-hooks -> checkdoc-style-functions
2042 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2043 *** archive-extract-hooks -> archive-extract-hook
2044 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2045 *** hfy-post-html-hooks -> hfy-post-html-hook
2046 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2047 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2048 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2049 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2051 ** Obsolete packages
2054 In most cases, assoc+member+push+delq work just as well.
2055 And in any case it's just a terrible package: ugly semantics, terrible
2056 inefficiency, and not namespace-clean.
2065 * Incompatible Lisp Changes in Emacs 24.3
2067 ** Docstrings starting with `*' no longer indicate user options.
2068 Only variables defined using `defcustom' are considered user options.
2069 The function `user-variable-p' is now an obsolete alias for
2070 `custom-variable-p'.
2072 ** The return values of `defalias', `defun' and `defmacro' have changed,
2073 and are now undefined. For backwards compatibility, `defun' and
2074 `defmacro' currently return the name of the newly defined
2075 function/macro, but this should not be relied upon.
2077 ** `random' by default now returns a different random sequence in
2078 every Emacs run. Use `(random S)', where S is a string, to set the
2079 random seed to a value based on S, in order to get a repeatable
2080 sequence in later calls.
2082 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2083 that substring is inserted literally even if the LITERAL arg is
2084 non-nil, instead of causing an error to be signaled.
2086 ** `select-window' now always makes the window's buffer current.
2087 It does so even if the window was selected before.
2089 ** The function `x-select-font' can return a font spec, instead of a
2090 font name as a string. Whether it returns a font spec or a font name
2091 depends on the graphical library.
2093 ** `face-spec-set' no longer sets frame-specific attributes when the
2094 third argument is a frame (that usage was obsolete since Emacs 22.2).
2096 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2098 ** The CL package's `get-setf-method' function no longer exists.
2099 Generalized variables are now part of core Emacs Lisp, and implemented
2100 differently to the way cl.el used to do it. It is not possible to
2101 define a compatible replacement for `get-setf-method'. See the file
2102 gv.el for internal details of the new implementation.
2104 ** The arguments of `dbus-register-signal' are no longer just strings,
2105 but keywords or keyword-string pairs. The old argument list will
2106 still be supported for Emacs 24.x.
2108 ** Miscellaneous name changes
2109 Some Lisp symbols have been renamed to correct their spelling,
2110 or to be more consistent with standard Emacs terminology.
2112 *** Renamed functions
2113 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2114 **** inactivate-input-method -> deactivate-input-method
2115 **** quail-inactivate -> quail-deactivate
2116 **** robin-inactivate -> robin-deactivate
2117 **** viper-inactivate-input-method -> viper-deactivate-input-method
2118 **** viper-inactivate-input-method-action ->
2119 viper-deactivate-input-method-action
2120 **** ucs-input-inactivate -> ucs-input-deactivate
2123 The old hooks are still supported for backward compatibility, but they
2124 are deprecated and will be removed eventually.
2125 **** input-method-inactivate-hook -> input-method-deactivate-hook
2126 **** robin-inactivate-hook -> robin-deactivate-hook
2127 **** quail-inactivate-hook -> quail-deactivate-hook
2129 *** Renamed variables
2130 **** follow-deactive-menu -> follow-inactive-menu
2131 **** inactivate-current-input-method-function ->
2132 deactivate-current-input-method-function
2134 ** Some obsolete functions, variables, and faces have been removed:
2135 *** `last-input-char', `last-command-char', `unread-command-char'
2136 *** `facemenu-unlisted-faces'
2137 *** `rmail-decode-mime-charset'
2138 *** `iswitchb-read-buffer'
2139 *** `sc-version', `sc-submit-bug-report'
2140 *** `set-char-table-default'
2141 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2142 *** `compile-internal'
2144 *** `mode-line-inverse-video'
2145 *** `follow-mode-off-hook'
2146 *** `cvs-commit-buffer-require-final-newline'
2147 (use `log-edit-require-final-newline' instead)
2148 *** `cvs-changelog-full-paragraphs'
2149 (use `log-edit-changelog-full-paragraphs' instead)
2150 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2151 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2152 *** `vc-master-templates' (use `vc-handled-backends' instead)
2153 *** `vc-checkout-carefully'
2156 * Lisp Changes in Emacs 24.3
2158 ** CL-style generalized variables are now in core Elisp.
2159 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2160 You can define your own generalized variables using `gv-define-simple-setter',
2161 `gv-define-setter', etc.
2163 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2164 This can significantly speed up execution of non-byte-compiled code,
2165 but can also bump into previously unnoticed cyclic dependencies.
2166 These are generally harmless: they will simply cause the macro calls
2167 to be left for later expansion (as before), but will result in a
2168 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2169 You may wish to restructure your code so this does not happen.
2171 ** New sampling-based Elisp profiler.
2172 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2173 When finished, use M-x profiler-stop. The sampling rate can be based on
2174 CPU time or memory allocations.
2176 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2177 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2179 ** New macros `setq-local' and `defvar-local'.
2181 ** Face underlining can now use a wave.
2183 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2184 of `read-regexp' accepts a string ending with a colon and space, and its
2185 second argument DEFAULTS can be a list of strings accessible via `M-n'
2186 in the minibuffer ahead of other hard-coded useful regexp-related values.
2187 More commands use `read-regexp' now to read their regexp arguments.
2191 *** New function `completion-table-with-quoting' to handle completion
2192 in the presence of quoting, such as file completion in shell buffers.
2194 *** New function `completion-table-subvert' to use an existing completion
2195 table, but with a different prefix.
2199 *** New error type and new function `user-error'.
2200 These do not trigger the debugger.
2202 *** New option `debugger-bury-or-kill', saying what to do with the
2203 debugger buffer when exiting debug.
2205 *** Set `debug-on-message' to enter the debugger when a certain
2206 message is displayed in the echo area. This can be useful when trying
2207 to work out which code is doing something.
2209 *** New var `inhibit-debugger', automatically set to prevent accidental
2210 recursive invocations.
2214 *** New command `fit-frame-to-buffer' adjusts the frame height to
2217 *** The command `fit-window-to-buffer' can adjust the frame height
2218 if the new option `fit-frame-to-buffer' is non-nil.
2220 *** New macro `with-temp-buffer-window', similar to
2221 `with-output-to-temp-buffer'.
2223 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2226 *** New option `switch-to-buffer-preserve-window-point' to restore a
2227 window's point when switching buffers.
2229 *** New display action alist entries `window-height' and `window-width'
2230 specify the size of new windows created by `display-buffer'.
2232 *** New display action alist entry `pop-up-frame-parameters', if
2233 non-nil, specifies frame parameters to give any newly-created frame.
2235 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2236 tells display action functions to avoid changing which frame is
2239 *** New display action alist entry `previous-window', if non-nil,
2240 specifies window to reuse in `display-buffer-in-previous-window'.
2242 *** New display action functions `display-buffer-below-selected',
2243 and `display-buffer-in-previous-window'.
2245 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2246 now accept a third argument to avoid choosing the selected window.
2248 *** Additional values recognized for option `window-combination-limit'.
2250 *** The following variables are obsolete, as they can be replaced by
2251 appropriate entries in the `display-buffer-alist' function introduced
2253 **** `dired-shrink-to-fit'
2254 **** `display-buffer-reuse-frames'
2255 **** `display-buffer-function'
2256 **** `special-display-buffer-names'
2257 **** `special-display-frame-alist'
2258 **** `special-display-function'
2259 **** `special-display-regexps'
2263 *** `current-time-string' no longer requires that its argument's year
2264 must be in the range 1000..9999. It now works with any year supported
2265 by the underlying C implementation.
2267 *** `current-time' now returns extended-format time stamps
2268 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2269 PSEC is typically a multiple of 1000 on current machines. Other
2270 functions that use this format, such as `file-attributes' and
2271 `format-time-string', have been changed accordingly. Old-format time
2272 stamps are still accepted.
2274 *** The format of timers in `timer-list' and `timer-idle-list' is now
2275 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2276 The PSECS slot is new, and uses picosecond resolution. It can be
2277 accessed via the new `timer--psecs' accessor.
2279 *** Last-modified time stamps in undo lists now are of the form
2280 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2284 *** Improved security when handling persistent objects:
2286 **** `eieio-persistent-read' now features optional arguments for specifying
2287 the class to load, as well as a flag stating whether subclasses are allowed;
2288 if provided, other classes will be rejected by the reader. For
2289 compatibility with existing code, if the class is omitted only a
2292 **** New specialized reader for pulling in classes and signaling errors
2293 without evaluation of suspicious code.
2295 **** All slots that contain objects must have a :type. Slots with lists
2296 of objects must use a new type predicate for a list of an object type.
2298 *** Support for `find-function' and similar utilities, through the addition
2299 of filename support to generated symbols.
2301 ** Floating point functions now always return special values like NaN,
2302 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2303 Previously, they returned NaNs on some platforms but signaled errors
2304 on others. The affected functions are acos, asin, tan, exp, expt,
2305 log, log10, sqrt, and mod.
2307 ** New fringe bitmap `exclamation-mark'.
2309 ** Miscellaneous changes to special forms and macros
2311 *** `defun' and `defmacro' are now macros rather than special forms.
2313 *** `kbd' is now a function rather than a macro.
2315 ** Miscellaneous new functions
2317 *** `set-temporary-overlay-map' sets up a temporary keymap that
2318 takes precedence over most other maps for a short while (normally one key).
2320 *** `autoloadp' tests if its argument is an autoloaded object.
2322 *** `autoload-do-load' performs the autoloading operation.
2324 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2326 *** `file-name-base' returns a file name sans directory and extension.
2328 *** `function-get' fetches a function property, following aliases.
2330 *** `posnp' tests if an object is a `posn'.
2332 *** `system-users' returns the user names on the system.
2334 *** `system-groups' returns the group names on the system.
2336 *** `tty-top-frame' returns the topmost frame of a text terminal.
2338 ** The following functions and variables are obsolete:
2339 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2340 *** `buffer-has-markers-at'
2341 *** `macro-declaration-function' (use `macro-declarations-alist')
2342 *** `window-system-version' (provides no useful information)
2343 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2344 *** `query-replace-interactive'
2345 *** `font-list-limit' (has had no effect since Emacs < 23)
2348 * Changes in Emacs 24.3 on Non-Free Operating Systems
2350 ** Cygwin builds can use the native MS Windows user interface.
2351 Pass `--with-w32' to configure. The default remains the X11 interface.
2353 ** Two new functions are available in Cygwin builds:
2354 `cygwin-convert-file-name-from-windows' and
2355 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2356 code to access the Cygwin file-name mapping machinery to convert
2357 between Cygwin and Windows-native file and directory names.
2359 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2360 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2361 `mouse-autoselect-window'.
2363 ** On MS Windows Vista and later Emacs now supports symbolic links.
2365 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2366 support for libxml2, even if its presence is detected.
2368 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2370 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2371 directories to the search path. You must add them yourself if you want them.
2374 * Changes in Emacs 24.2
2376 ** This is mainly a bug-fix release.
2379 * Installation Changes in Emacs 24.1
2381 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2382 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2383 also depend on Gtk+. You can disable them with --without-rsvg and
2386 ** Emacs can be compiled with GnuTLS support.
2387 This happens by default if a suitably recent version of the library is
2388 found at build time. To prevent this, use the configure option
2389 `--without-gnutls'. See below for GnuTLS features.
2391 ** Emacs can be compiled with SELinux support.
2392 This happens by default if a suitably recent version of the library is
2393 found at build time. To prevent this, use the configure option
2394 `--without-selinux'. See below for SELinux features.
2396 ** Emacs can be compiled with ImageMagick support.
2397 This happens by default if a suitably recent version of the library is
2398 found at build time. To prevent this, use the configure option
2399 `--without-imagemagick'. See below for ImageMagick features.
2400 This feature is not available for the Nextstep or MS ports.
2402 ** Emacs can be compiled with libxml2 support.
2403 This happens by default if a suitably recent version of the library is
2404 found at build time. To prevent this, use the configure option
2405 `--without-xml2'. See below for libxml2 features.
2407 ** By default, the installed Info and man pages are compressed.
2408 You can disable this by configuring --without-compress-info.
2410 ** New configure option --with-wide-int.
2411 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2412 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2415 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2416 These provide no new functionality, they just remove the need to edit
2417 lib-src/Makefile by hand in order to use the associated features.
2419 ** New configure option --enable-use-lisp-union-type.
2420 This is only useful for Emacs developers to debug certain types of bugs.
2421 This is not a new feature; only the configure flag is new.
2423 ** The standalone programs digest-doc and sorted-doc are removed.
2424 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2426 ** The standalone program `fakemail' is removed.
2427 If you need it, feedmail.el provides a superset of the functionality.
2430 * Startup Changes in Emacs 24.1
2432 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2433 command line arguments, and the EMACS_UNIBYTE environment variable, no
2434 longer have any effect. (They were declared obsolete in Emacs 23.)
2436 ** New command line option `--no-site-lisp' removes site-lisp directories
2437 from load-path. -Q now implies this. This option does not affect the
2438 EMACSLOADPATH environment variable (and hence has no effect for
2442 * Changes in Emacs 24.1
2446 *** Many packages now use the `completion-at-point' command,
2447 rather than implementing separate completion commands.
2449 *** `completion-at-point' now handles tags and semantic completion.
2451 *** Completion in a non-minibuffer now tries to detect the end of completion
2452 and pops down the *Completions* buffer accordingly.
2454 *** New option `completion-cycle-threshold' allows completion cycling.
2456 *** New option `completion-category-overrides' for overriding the
2457 default completion style in certain circumstances.
2459 *** New completion style `substring'.
2461 *** Completion of buffer names uses `substring' completion by default.
2463 *** The option `widget-complete-field' has been removed.
2467 *** The first time you try sending mail, Emacs asks for a mail method.
2468 This is implemented by a new default for `send-mail-function', which
2469 is `sendmail-query-once'. This offers to use the smtpmail package, or
2470 to use the old defaults relying on external mail facilities
2471 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2472 `mailclient-send-it' on Windows).
2474 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2475 transfers the report to your desktop's preferred mail client, if there
2476 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2479 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2480 and Mail mode changes
2482 ** Emacs server and client changes
2484 *** New option `server-port' specifies the port for TCP Emacs servers.
2486 *** New emacsclient argument -q/--quiet suppresses some status messages.
2488 *** New emacsclient argument --frame-parameters specifies the frame
2489 parameters of any newly-created graphical frame.
2491 *** If emacsclient shuts down due to Emacs signaling an error,
2492 its exit status is 1.
2494 *** New emacsclient argument --parent-id ID.
2495 This opens a client frame in parent X window ID, via XEmbed, similar
2496 to the --parent-id argument to Emacs.
2498 ** Internationalization changes
2500 *** Emacs now supports display and editing of bidirectional text.
2501 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2502 displayed in the correct visual order as expected by users of those
2503 scripts. The display reordering is a "full bidirectionality" class
2504 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2505 with no RTL text should look exactly the same as before.
2507 **** New buffer-local variable `bidi-display-reordering'.
2508 To disable display reordering in a buffer, change this to nil.
2510 **** New buffer-local variable `bidi-paragraph-direction'.
2511 If nil (the default), Emacs determines the base direction of each
2512 paragraph from its text, as specified by the UBA. Setting the value
2513 to `right-to-left' or `left-to-right' forces a base direction on each
2516 Paragraphs with right-to-left base direction are displayed starting at
2517 the right window edge.
2519 *** Enhanced support for characters with no glyphs in available fonts,
2520 or, on text terminals, characters that cannot be encoded by the
2521 terminal coding system. The new option `glyphless-char-display-control'
2522 specifies how to display them: as a hexadecimal code in a box, a thin
2523 1-pixel space, an empty box, etc.
2525 *** New input methods for Farsi and Bulgarian
2526 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2528 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2529 (U+2010 and U+2011).
2531 *** New Hebrew translation of the Emacs Tutorial.
2532 Type `C-u C-h t' to choose it in case your language setup doesn't
2533 automatically select it.
2535 ** An Emacs Lisp package manager is now included.
2536 This is a convenient way to download and install additional packages,
2537 from a package repository at http://elpa.gnu.org.
2539 *** M-x list-packages shows a list of packages, which can be
2540 selected for installation.
2542 *** New command `describe-package', bound to `C-h P'.
2544 *** By default, all installed packages are loaded automatically when
2545 Emacs starts up. To disable this, set `package-enable-at-startup' to
2546 nil. To specify the packages to load, customize `package-load-list'.
2548 ** Custom theme changes
2550 *** New command `M-x customize-themes', which provides a convenient
2551 interface for enabling and disabling Custom themes.
2553 *** New option `custom-theme-load-path' is the load path for themes.
2554 Emacs no longer looks for Custom themes in `load-path'. The default
2555 value of `custom-theme-load-path' says to look for themes in
2556 `custom-theme-directory', followed by a subdirectory of
2557 `data-directory' named "themes/", which contains a small selection of
2558 built-in Custom themes.
2560 *** New option `custom-safe-themes' records known-safe theme files.
2561 If a theme is not in this list, Emacs queries before loading it, and
2562 offers to save the theme to `custom-safe-themes' automatically. By
2563 default, all themes included in Emacs are treated as safe.
2565 ** Improved GTK integration
2567 *** GTK scroll-bars are now placed on the right by default.
2568 The function `set-scroll-bar-mode' can change this.
2570 *** GTK tool bars can have just text, just images or images and text.
2571 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2572 the default is taken from desktop settings.
2574 *** GTK tool bars can be placed on any edge of the frame.
2575 The frame-parameter tool-bar-position controls this. It takes the
2576 values top, left, right or bottom. The Options => Show/Hide menu has
2579 *** The default colors for selected text (the `region' face) are taken
2580 from the GTK theme when Emacs is built with GTK.
2582 *** Emacs uses GTK tooltips by default if built with GTK.
2583 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2585 ** Graphical interface changes
2587 *** On graphical displays, the mode-line no longer ends in dashes.
2588 Also, the first dash (which does not indicate anything) is just
2589 displayed as a space.
2591 *** `menu-bar-select-buffer-function' lets you choose another operation
2592 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2594 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2595 built with Xft. These fonts can be set via X resources, for example:
2596 Emacs.pane.menubar.font: Courier-12
2600 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2601 or if it receives a SIGINT signal in batch mode.
2603 *** `kill-emacs-hook' is now also run in batch mode.
2604 Third-party code which adds to `kill-emacs-hook' should check if they
2605 do the right thing in batch mode.
2607 ** Scrolling changes
2609 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2610 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2611 of buffer at first key-press (instead they move to top/bottom of buffer)
2612 when `scroll-error-top-bottom' is non-nil.
2614 *** New option `scroll-error-top-bottom' (see above).
2616 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2617 scroll a line instead of full screen.
2619 *** New property `scroll-command' should be set on a command's symbol to
2620 define it as a scroll command affected by `scroll-preserve-screen-position'.
2622 *** If you customize `scroll-conservatively' to a value greater than 100,
2623 Emacs will never recenter point in the window when it scrolls due to
2624 cursor motion commands or commands that move point (e.f., `M-g M-g').
2625 Previously, you needed to use `most-positive-fixnum' as the value of
2626 `scroll-conservatively' to achieve the same effect.
2628 *** "Aggressive" scrolling now honors the scroll margins.
2629 If you customize `scroll-up-aggressively' or
2630 `scroll-down-aggressively' and move point off the window, Emacs now
2631 scrolls the window so as to avoid positioning point inside the scroll
2634 ** Basic SELinux support has been added.
2635 This requires Emacs to be linked with libselinux at build time.
2637 *** Emacs preserves the SELinux file context when backing up.
2638 Also, the function `copy-file' has an extra optional argument for
2639 preserving SELinux context, and the return value of `backup-buffer'
2640 now includes the SELinux context.
2642 *** New functions `file-selinux-context' and `set-file-selinux-context'
2643 get and set the SELinux context of a file.
2647 *** `delete-by-moving-to-trash' now only affects commands that specify
2648 trashing. This avoids inadvertently trashing temporary files.
2650 *** Calling `delete-file' or `delete-directory' with a prefix argument
2651 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2653 ** File- and directory-local variable changes
2655 *** You can stop directory local vars from applying to subdirectories.
2656 Add an element (subdirs . nil) to the alist portion of any variables
2657 settings to indicate that the section should not apply to
2660 *** Directory local variables can apply to some file-less buffers.
2661 Affected modes include dired, vc-dir, and log-edit. For example,
2662 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2663 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2664 `hack-dir-local-variables-non-file-buffer' to support this.
2666 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2667 Instead, use "eval: (minor-mode 1)".
2669 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2670 to `inhibit-local-variables-regexps'. As the name suggests, it now
2671 applies to ALL file local variables, not just -*- lines. The
2672 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2677 *** The `quit-window' command now restores the last buffer displayed
2678 in the quitted window.
2680 *** Resizing an Emacs frame now preserves proportional window sizes,
2681 modulo restrictions like window minimum sizes and fixed-size windows.
2683 *** The behavior of `display-buffer' is now customizable in detail.
2685 **** New option `display-buffer-base-action' specifies a list of
2686 user-determined display "actions" (functions and optional arguments
2687 for choosing the displaying window).
2689 This takes precedence over the default display action, which is
2690 specified by `display-buffer-fallback-action'.
2692 **** New option `display-buffer-alist' maps buffer name regexps to
2693 display actions, taking precedence over `display-buffer-base-action'.
2695 *** New option `window-combination-limit'.
2696 The new option `window-combination-limit' allows to return the space
2697 obtained for resizing or creating a window more reliably to the window
2698 from which such space was obtained.
2700 *** New option `window-combination-resize'.
2701 The new option `window-combination-resize' allows to split a window that
2702 otherwise cannot be split because it's too small by stealing space from
2703 other windows in the same combination. Subsequent resizing or deletion
2704 of the window will resize all windows in the same combination as well.
2706 *** New option `frame-auto-hide-function' lets you choose between
2707 iconifying or deleting a frame when burying a buffer in a dedicated
2708 frame, or quitting a window showing a buffer in a frame of its own.
2710 *** New commands `maximize-window' and `minimize-window'.
2711 These maximize and minimize the size of a window within its frame.
2713 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2714 These functions allow to navigate through the live buffers that have
2715 been shown in a specific window.
2717 ** Minibuffer changes
2719 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2720 This is handy for minibuffer-only frames, and is also used for the feature
2721 where mouse-1 pops up *Messages*"', which can now easily be changed.
2723 *** Minibuffers set `truncate-lines' to nil.
2724 If you want to change the value to something else, you could use
2725 for example `minibuffer-setup-hook'.
2727 ** `auto-mode-case-fold' is now enabled by default.
2729 ** `backup-by-copying-when-mismatch' now defaults to t.
2731 ** New basic faces `error', `warning', `success'.
2732 These are used to highlight text indicating failure, caution or
2733 successful operation.
2735 ** New option `list-colors-sort' defines the color sort order
2736 for `list-colors-display'.
2738 ** The variable `focus-follows-mouse' now always defaults to nil.
2741 * Editing Changes in Emacs 24.1
2745 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2746 `isearch-yank-line'.
2748 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2749 `isearch-yank-kill'.
2751 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2753 ** New commands `count-words-region' and `count-words'.
2755 *** M-= is bound to `count-words-region', not `count-lines-region'.
2756 The `count-words-region' command, when called interactively, reports
2757 the number of lines, words, and characters in the region. It is a
2758 superset of the old `count-lines-region', which is now an obsolete
2761 ** The command `just-one-space' (M-SPC), if given a negative argument,
2762 also deletes newlines around point.
2766 *** New option `delete-active-region'.
2767 If non-nil, [delete] and DEL delete the region if it is active and no
2768 prefix argument is given. If set to `kill', those commands kill
2771 *** New command `delete-forward-char', bound to [delete].
2772 This is meant for interactive use, and obeys `delete-active-region'.
2773 The command `delete-char' does not obey `delete-active-region'.
2775 *** `delete-backward-char' is now a Lisp function.
2776 Apart from obeying `delete-active-region', its behavior is unchanged.
2777 However, the byte compiler now warns if it is called from Lisp; Lisp
2778 callers should use delete-char with a negative argument instead.
2780 *** The option `mouse-region-delete-keys' has been deleted.
2782 ** Selection changes.
2784 The default handling of clipboard and primary selections has been
2785 changed to conform with modern X applications. In short, most
2786 commands for killing and yanking text now use the clipboard, while
2787 mouse commands use the primary selection.
2789 In the following, we provide a list of these changes, followed by a
2790 list of steps to get the old behavior back if you prefer that.
2792 *** `select-active-regions' now defaults to t.
2793 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
2794 the kill ring. The selected text is put in the primary selection, if
2795 the system possesses a separate primary selection facility (e.g. X).
2797 **** `select-active-regions' also accepts a new value, `only'.
2798 This means to only set the primary selection for temporarily active
2799 regions (usually made by mouse-dragging or shift-selection);
2800 "ordinary" active regions, such as those made with C-SPC followed by
2801 point motion, do not alter the primary selection.
2803 **** `mouse-drag-copy-region' now defaults to nil.
2805 *** mouse-2 is now bound to `mouse-yank-primary'.
2806 This pastes from the primary selection, ignoring the kill-ring.
2807 Previously, mouse-2 was bound to `mouse-yank-at-click'.
2809 *** `x-select-enable-clipboard' now defaults to t on all platforms.
2811 *** `x-select-enable-primary' now defaults to nil.
2812 Thus, commands that kill text or copy it to the kill-ring (such as
2813 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2815 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
2816 exactly equivalent to M-w, C-w, and C-y respectively.
2818 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
2819 non-nil by default, as Windows does not support the primary selection
2820 between applications.
2822 *** To return to the previous behavior, do the following:
2824 **** Change `select-active-regions' to nil.
2825 **** Change `mouse-drag-copy-region' to t.
2826 **** Change `x-select-enable-primary' to t (on X only).
2827 **** Change `x-select-enable-clipboard' to nil.
2828 **** Bind `mouse-yank-at-click' to mouse-2.
2830 *** Support for X cut buffers has been removed.
2832 *** X clipboard managers are now supported.
2833 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
2835 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2836 in the current rectangle. With a prefix argument, this prompts for a
2837 number to count from and for a format string.
2839 ** `redisplay-dont-pause' now defaults to t.
2840 This makes Emacs feel more responsive to editing commands that arrive
2841 at high rate, e.g. if you lean on some key, because stopping redisplay
2842 in the middle (when this variable is nil) forces more expensive
2843 updates later on, and Emacs appears to be unable to keep up.
2845 ** The behavior of <TAB> for active regions in Text mode has changed.
2846 In Text and related modes, typing <TAB> (`indent-for-tab-command')
2847 when the region is active causes Emacs to indent all the lines in the
2848 region, aligning them with the line previous to the first line in the
2849 region (or with the left margin if there is no previous line).
2851 ** When `occur' is called with a prefix argument, matching strings are
2852 collected into the `*Occur*' buffer without line numbers. If there
2853 are parenthesized subexpressions in the specified regexp, `occur'
2854 reads replacement text that may contain \\& and \\N whose convention
2855 follows `replace-match'.
2858 * Changes in Specialized Modes and Packages in Emacs 24.1
2860 ** Archive Mode has basic support for browsing and updating 7z archives.
2864 *** BibTeX mode now supports biblatex.
2865 Use the variable `bibtex-dialect' to select different BibTeX dialects.
2866 `bibtex-entry-field-alist' is now an obsolete alias for
2867 `bibtex-BibTeX-entry-alist'.
2869 *** New command `bibtex-search-entries', bound to C-c C-a.
2871 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
2873 *** New variable `bibtex-search-entry-globally'.
2877 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
2879 *** The default browser used by the package is now the "xdg-open" program,
2880 on platforms that support it. This calls your desktop's preferred browser.
2884 *** Support for musical notes.
2886 *** Support for logarithmic units.
2888 *** No longer uses the tex prefix for TeX specific unit names when
2889 using TeX or LaTeX mode.
2891 *** New option to highlight selections using faces.
2893 *** `calc-histogram' has the option of using a vector to determine the bins.
2895 *** New "O" option prefix.
2897 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2899 ** Calendar, Diary, and Appt
2901 *** Diary entries can contain non-printing "comments".
2902 See the variable `diary-comment-start'.
2904 *** Appointments can specify their individual warning times.
2905 See the variable `appt-warning-time-regexp'.
2907 *** The function specified by `appt-disp-window-function' may be passed
2908 lists of arguments if multiple appointments are due at similar times.
2909 If you are using a custom function for this, you should update it.
2911 *** New function `diary-hebrew-birthday'.
2913 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2914 may no longer be nil, but must all be strings.
2916 *** The obsolete (since Emacs 22.1) method of enabling the appt
2917 package by adding `appt-make-list' to `diary-hook' has been removed.
2918 Use `appt-activate' instead.
2920 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
2921 appt-issue-message (use the function appt-activate)
2922 appt-visible/appt-msg-window (use the variable appt-display-format)
2924 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2925 view-diary-entries, list-diary-entries, show-all-diary-entries
2929 *** New feature to "guess" the style in an existing buffer.
2930 The main entry point is M-x c-guess.
2932 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2934 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
2935 Thus C-M-a will, by default, go to the beginning of the immediate function,
2938 *** "Macros with semicolons" can be registered for correct indentation.
2939 Where such a macro ends a line (no semicolon) the next statement is no longer
2940 parsed as a statement continuation.
2942 ** Comint and modes derived from it use the standard completion code.
2946 *** Compilation mode can be used without Font Lock mode.
2947 `compilation-parse-errors-function' is now obsolete.
2949 *** New variable `compilation-filter-start', which is bound while
2950 `compilation-filter-hook' runs. It records the start position of the
2951 text inserted by `compilation-filter'.
2953 *** `compilation-error-screen-columns' and `compilation-first-column'
2954 are obeyed in the editing buffer. So programming language modes can
2955 set them, whereas previously only the value in the *Compilation*
2960 *** Customize buffers now contain a search field.
2961 The search is performed using `customize-apropos'.
2962 To turn off the search field, set `custom-search-field' to nil.
2964 *** Options in customize group buffers start out hidden if not customized.
2965 Use the arrow to the left of the option name to toggle visibility.
2967 *** custom-buffer-sort-alphabetically now defaults to t.
2969 *** The color widget now has a "Choose" button, which allows you to
2970 choose a color via `list-colors-display'.
2974 *** It is now possible to access buses other than the default system
2977 *** The `dbus-register-method' and `dbus-register-property' functions
2978 optionally do not register names.
2980 *** The new function `dbus-register-service' registers a known service
2981 name on a D-Bus without also registering a property or a method.
2985 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2986 if called with a prefix argument, read a file name from the minibuffer
2987 instead of using the current buffer.
2989 *** The "dired local variables" feature of Dired-x is obsolete.
2990 The standard directory local variables feature replaces it.
2994 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2995 controlling attempts to autojoin a channel.
2997 *** New variable `erc-coding-system-precedence': If we use `undecided'
2998 as the server coding system, this variable will then be consulted.
2999 The default is to decode strings that can be decoded as utf-8 as
3000 utf-8, and do the normal `undecided' decoding for the rest.
3004 *** The default value of `eshell-directory-name' has changed
3005 to be an "eshell" directory in `user-emacs-directory'.
3006 The old "~/.eshell/" directory is still used if it exists, though.
3010 *** The M-x gdb command now uses the GDB Machine Interface protocol.
3011 It now supports multithread non-stop debugging and simultaneous
3012 debugging of several threads.
3016 *** RET (`image-toggle-animation') toggles animation, if applicable.
3017 Animation plays once, unless the option `image-animate-loop' is non-nil.
3021 *** New command M-x info-display-manual displays a named Info manual.
3022 If that manual is already visited in some Info buffer, it displays
3023 that buffer. (This is handy if you have many manuals in many *info*
3024 buffers, and don't remember the name of the buffer visiting the manual
3025 you want to consult.) Otherwise, it loads and displays the manual.
3027 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
3028 This is for compatibility with the stand-alone Info reader program,
3029 and also because `Info-edit' is a rarely used command that is disabled
3032 ** Mail mode changes (not Message mode)
3034 *** New command M-x mail-add-attachment for adding MIME attachments
3036 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
3037 (Its name is misleading, since it has nothing to do with MIME
3038 attachments.) The old name is now an obsolete alias to the new name.
3040 ** MH-E has been updated to MH-E version 8.3.1.
3041 See MH-E-NEWS for details.
3043 ** Modula-2 mode provides auto-indentation.
3045 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3047 ** nXML mode no longer binds C-RET to `nxml-complete'.
3048 Completion is now performed via `completion-at-point', bound to C-M-i
3049 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3050 default), this performs tag completion.
3052 ** Org mode has been updated to version 7.8.09.
3053 See ORG-NEWS for details.
3055 ** Prolog mode has been completely revamped, with lots of additional
3056 functionality such as more intelligent indentation, electricity,
3057 support for more variants, including Mercury, and a lot more.
3061 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3062 in the Rmail incoming message.
3064 *** The variable `rmail-message-filter' no longer has any effect.
3065 This change was made in Emacs 23.1 but was not advertised at the time.
3066 Try using `rmail-show-message-hook' instead.
3070 *** M-x shell prompts for the shell path name if the default directory
3071 is a remote file name and neither the environment variable $ESHELL nor
3072 the variable `explicit-shell-file-name' is set.
3074 *** TAB is now bound to the standard `completion-at-point' command,
3075 which now implements the pcomplete rules for shell command completion.
3079 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3080 if the mail server supports them. This uses either built-in GnuTLS
3081 support, or the starttls.el library. Customize `smtpmail-stream-type'
3084 *** The variable `smtpmail-auth-credentials' has been removed.
3085 By default, the information is now stored in the file ~/.authinfo.
3086 This was the default value of smtpmail-auth-credentials. If you had
3087 customized smtpmail-auth-credentials to a list of user names and
3088 passwords, those settings are not used. During your first connection
3089 to the smtp server, Emacs will prompt for the user name and password,
3090 and offer to save them to ~/.authinfo. Or you can manually copy the
3091 credentials to ~/.authinfo. For example, if you had
3093 (setq smtpmail-auth-credentials
3094 '(("mail.example.org" 25 "jim" "s!cret")))
3096 then the equivalent line in ~/.authinfo would be
3098 machine mail.example.org port 25 login jim password s!cret
3100 See the auth-source manual for more information, e.g. on encrypting
3101 the credentials file.
3103 *** The variable `smtpmail-starttls-credentials' has been removed.
3104 If you had that set, you need to put
3106 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3108 in your ~/.authinfo file instead.
3110 *** SMTPmail defaults to using the address in the From: header as the
3111 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3112 to the address you wish to use instead.
3116 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3117 and `sql-oracle-scan-on'.
3119 *** New options controlling prompting for login parameters.
3120 Each supported product has a custom variable `sql-*-login-params',
3121 which is a list of the parameters to be prompted for before a
3122 connection is established.
3124 *** The command `sql-product-interactive' now takes a prefix argument,
3125 which causes it to prompt for an SQL product.
3127 *** Product-specific SQL interactive commands now take prefix arguments.
3128 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3129 given a prefix argument, prompt for a name for the SQL interactive
3130 buffer. This reduces the need for calling `sql-rename-buffer'.
3132 *** SQL interactive modes suppress command continuation prompts, and
3133 replace tabs with spaces. The first change impacts multiple line SQL
3134 statements entered with C-j between each line, statements yanked into
3135 the buffer and statements sent with `sql-send-*' functions. The
3136 second prevents the MySQL and Postgres interpreters from listing
3137 object name completions when sent text via `sql-send-*' functions.
3139 *** New command `sql-connect' starts a predefined SQLi session,
3140 using the login parameters from `sql-connection-alist'.
3142 *** New "Save Connection" menu item in SQLi buffers.
3143 This gathers the login params specified for the SQLi session, if it
3144 was not started by a connection, and saves them as a new connection.
3146 *** New commands for listing database objects and details:
3147 sql-list-all and sql-list-table.
3149 *** An API for manipulating SQL product definitions has been added.
3153 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3157 *** New inline access method "ksu" (kerberized su).
3159 *** The following access methods are discontinued: "ssh1_old",
3160 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3162 *** The user option `remote-file-name-inhibit-cache' controls whether
3163 remote file attributes are cached for better performance.
3165 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3166 default value to "".
3168 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3169 for remote machines which support SELinux.
3171 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3172 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3173 the degree of parallelism.
3175 ** VC and related modes
3177 *** Support for pulling on distributed version control systems.
3178 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3179 supported (currently with Bzr, Git, and Mercurial), to update the
3180 current branch and working tree. A prefix argument means to prompt
3181 the user for specifics, e.g. a pull location.
3183 *** `vc-update' is now an alias for `vc-pull'.
3185 *** Support for merging on distributed version control systems.
3186 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3187 is supported (currently with Bzr, Git, and Mercurial), to merge
3188 changes from another branch into the current one. It prompts for
3189 specifics, e.g. a merge source.
3191 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3192 shows a diff while querying the user. It defaults to t.
3194 *** Log entries in some Log View buffers can be toggled to display a
3195 longer description by typing RET (log-view-toggle-entry-display).
3196 This is currently supported for Bzr, Git, and Mercurial (to support
3197 another backend, define a `log-view-expanded-log-entry-function').
3198 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3199 use this to display the full log entry for the revision at point.
3201 *** New command `vc-ediff' allows visual comparison of two revisions
3202 of a file similar to `vc-diff', but using ediff backend.
3204 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3205 this was not advertised at the time.
3207 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3208 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3209 this was not advertised at the time.
3215 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3217 *** partial-completion-mode (complete.el) is obsolete.
3218 You can get a comparable behavior with:
3219 (setq completion-styles '(partial-completion initials))
3220 (setq completion-pcm-complete-word-inserts-delimiters t)
3222 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3224 *** pgg is obsolete (use EasyPG instead).
3226 *** sregex.el is obsolete, since rx.el is a strict superset.
3228 *** s-region.el and pc-select.el are obsolete.
3229 They are superseded by shift-select-mode, enabled by default since 23.1.
3231 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3235 *** The Landmark game is now invoked with `landmark', not `lm'.
3236 Its functions and variables have been similarly renamed.
3238 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3239 (This interfered with cua-mode.)
3241 *** f90.el has some support for Fortran 2008 syntax.
3243 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3245 *** New command `nato-region' converts text to NATO phonetic alphabet.
3248 * New Modes and Packages in Emacs 24.1
3250 ** Occur Edit mode applies edits made in *Occur* buffers to the
3251 original buffers. It is bound to "e" in Occur mode.
3253 ** New global minor mode electric-pair-mode.
3254 When enabled, typing an open parenthesis automatically inserts the
3255 matching closing one.
3257 ** New global minor mode electric-indent-mode.
3258 When enabled, typing certain characters triggers reindentation.
3259 Major modes wishing to use this can set electric-indent-chars or
3260 electric-indent-functions.
3262 ** New global minor mode electric-layout-mode.
3263 When enabled, typing certain characters automatically inserts newlines.
3264 Major modes wishing to use this can set electric-layout-rules.
3266 ** tabulated-list.el provides a generic major mode for tabulated data,
3267 from which other modes can be derived.
3269 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3271 ** secrets.el is an implementation of the Secret Service API, an
3272 interface to password managers like GNOME Keyring or KDE Wallet. The
3273 Secret Service API requires D-Bus for communication. The command
3274 `secrets-show-secrets' offers a buffer with a visualization of the
3277 ** notifications.el provides an implementation of the Desktop
3278 Notifications API. It requires D-Bus for communication.
3280 ** soap-client.el supports access to SOAP web services from Emacs.
3281 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3283 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3285 ** New emacs-lock.el package.
3286 The previous version has been moved to obsolete/old-emacs-lock.el.
3287 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3288 against exiting Emacs and killing the buffer can be set separately.
3289 The mechanism for automatically turning off protection for buffers
3290 with dead inferior processes has been generalized.
3293 * Incompatible Lisp Changes in Emacs 24.1
3295 ** Passing a nil argument to a minor mode function call now ENABLES
3296 the minor mode unconditionally. This is so that you can write e.g.
3298 (add-hook 'text-mode-hook 'foo-mode)
3300 to enable foo-mode in Text mode buffers, removing the need for
3301 `turn-on-foo-mode' style functions. This affects all mode commands
3302 defined by `define-minor-mode'. If called interactively, the mode
3303 command still toggles the minor mode.
3305 ** The return value of `backup-buffer' has changed.
3306 It is now a list of three elements, where the second element is a list
3307 describing the original file's SELinux context. If Emacs or the
3308 system lacks SELinux support, the context list is (nil nil nil nil).
3309 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3311 ** `char-direction-table' and the `char-direction' function were deleted.
3312 They were buggy and inferior to the new support of bidirectional
3313 editing introduced in Emacs 24. If you need the bidirectional
3314 properties of a character, use `get-char-code-property' with the last
3315 argument `bidi-class'.
3317 ** `copy-directory' now copies the source directory as a subdirectory
3318 of the target directory, if the latter is an existing directory. The
3319 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3320 the contents directly into a pre-existing target directory.
3322 ** For mouse click input events in the text area, the Y pixel
3323 coordinate in the POSITION list now counts from the top of the text
3324 area, excluding any header line. Previously, it counted from the top
3327 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3328 been further reduced. Now a backquote not followed by a space is
3329 always treated as a "new-style" backquote. Please remove all
3330 "old-style" backquotes from your code. If your code uses backquotes
3331 as documented in the Elisp manual, and compiles without warning, then
3332 you have nothing to do in this regard. Code not following the
3333 appropriate conventions may fail to compile.
3335 The most common cause of trouble seems to be an old-style backquote
3336 followed by a newline. Another cause of trouble is vector notation
3337 for key sequence notation: instead of [(control ,)] and [(control ')],
3338 you should write [(control ?,)] and [(control ?')], which will work in
3341 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3342 was not advertised at the time. The function `custom-initialize-delay'
3343 replaced all known uses.
3345 ** `view-buffer' now treats special mode-class in the same way that
3346 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3347 major mode is special).
3349 ** Menu and tool bar changes
3351 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3352 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3353 With these alist entries omitted, `make-frame' checks the value of the
3354 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3355 a menu-bar or tool-bar, respectively. If the alist entries are added,
3356 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3358 *** The menu bar bindings's caches are not used any more.
3359 Use (where-is-internal <def> nil t) instead.
3361 ** Regions created by mouse dragging are now normal active regions,
3362 similar to those created by shift-selection (see Selection changes
3363 above). In previous Emacs versions, these regions were delineated by
3364 `mouse-drag-overlay'; that variable has been removed.
3366 ** The fourth argument of `filter-buffer-substring' has been removed.
3367 If you want to remove text properties from the final result, simply
3368 pass the result through substring-no-properties.
3370 ** cl.el no longer provides `cl-19'.
3372 ** The following obsolete functions and aliases have been removed
3373 (the appropriate new function is given in parentheses; "not needed"
3374 means you can just remove all calls to the function in question):
3376 *** `comint-kill-output' (`comint-delete-output')
3377 *** `decompose-composite-char' (`char-to-string')
3378 *** `outline-visible' (`outline-invisible-p')
3379 *** `internal-find-face' (`facep')
3380 *** `internal-get-face' (`facep and check-face')
3381 *** `frame-update-faces' (not needed)
3382 *** `frame-update-face-colors' (`frame-set-background-mode')
3383 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3384 *** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
3385 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3386 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3387 *** `x-make-font-unbold' (`make-face-unbold')
3388 *** `x-make-font-unitalic' (`make-face-unitalic')
3389 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3390 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3391 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3392 *** `char-bytes' (== 1)
3393 *** `isearch-return-char' (`isearch-printing-char')
3394 *** `make-local-hook' (not needed)
3395 *** `set-screen-height' (`set-frame-height')
3396 *** `set-screen-width' (`set-frame-width')
3398 ** The following obsolete variables and varaliases have been removed
3399 (the appropriate new variable is given in parentheses):
3401 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3402 *** `vc-header-alist' (`vc-BACKEND-header')
3403 *** `directory-sep-char' (== ?/)
3404 *** `font-lock-defaults-alist' (`font-lock-defaults')
3405 *** `e' (`float-e').
3407 ** The following obsolete files were removed:
3408 sc.el, x-menu.el, rnews.el, rnewspost.el
3410 ** The format of the finder-inf.el file has changed, since the Finder
3411 mechanism is now based on the package system. The variable
3412 `finder-package-info' is replaced by `package--builtins' and
3413 `finder-keywords-hash'.
3415 ** When generating autoloads, `update-directory-autoloads' no longer
3416 assumes every inspected file is in your `load-path'. It instead
3417 generates relative names according to the current `load-path'.
3420 * Lisp Changes in Emacs 24.1
3422 ** Code can now use lexical scoping by default instead of dynamic scoping.
3423 The `lexical-binding' variable enables lexical scoping for local
3424 variables. It is typically set via a file-local variable in the first
3425 line of the file, in which case it applies to all the code in that
3428 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3429 binding instead of the old dynamic binding mode.
3431 *** Lexically scoped interpreted functions are represented with a new form
3432 of function value which looks like (closure ENV ARGS &rest BODY).
3434 *** New macro `letrec' to define recursive local functions.
3436 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3437 So do `defcustom' and other forms that call `defvar' as a subroutine.
3439 *** New function `special-variable-p' to check whether a variable is
3440 declared as dynamically bound.
3442 *** The form ((lambda ...) ...) is deprecated.
3444 ** An Emacs Lisp testing tool is now included.
3445 Emacs Lisp developers can use this tool to write automated tests for
3446 their code. See the ERT info manual for details.
3448 ** Changes for bidirectional display and editing
3450 *** New function `current-bidi-paragraph-direction'.
3451 This returns the base direction of the paragraph at point.
3453 *** New function `bidi-string-mark-left-to-right'.
3454 Given a string containing characters from right-to-left scripts, this
3455 function returns another string which can be safely inserted into a
3456 buffer, such that any following text will be always displayed to the
3457 right of that string. (This works by appending an invisible Unicode
3458 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3460 This is useful when the buffer has overall left-to-right paragraph
3461 direction and you need to insert a string whose contents are not known
3462 in advance, without disrupting the layout of the line.
3466 *** Window tree functions are accessible in Elisp.
3467 Functions are provided to return the parent, siblings or child windows
3468 of any window including internal windows (windows not associated with a
3469 buffer) in the window tree.
3471 **** New function `window-valid-p' gives non-nil for live and internal
3474 **** Window manipulation can deal with internal windows.
3475 Many window handling functions like `split-window', `delete-window', or
3476 `delete-other-windows' as well as the window resizing functions can now
3477 act on any window including internal ones.
3479 *** window-total-height/-width vs window-body-height/-width.
3480 The function `window-height' has been renamed to `window-total-height'
3481 and `window-width' has been renamed to `window-body-width'. The old
3482 names are provided as aliases. Two new functions `window-total-width'
3483 and `window-body-height' are provided.
3485 *** Window parameters specific to window handling functions.
3486 For each window you can specify a parameter to override the default
3487 behavior of a number of functions like `split-window', `delete-window'
3488 and `delete-other-windows'. The variable `ignore-window-parameters'
3489 allows to ignore processing such parameters.
3491 *** New semantics of third argument of `split-window'.
3492 The third argument of `split-window' has been renamed to SIDE and can be
3493 set to any of the values 'below, 'right, 'above, or 'left to make the
3494 new window appear on the corresponding side of the window that shall be
3495 split. Any other value of SIDE will cause `split-window' to split the
3496 window into two side-by-side windows as before.
3498 *** Window resizing functions.
3499 A new standard function for resizing windows called `window-resize' has
3500 been introduced. This and all other functions for resizing windows no
3501 longer delete any windows when they become too small.
3503 *** Deleting the selected window now selects the most recently selected
3504 live window on that frame instead.
3506 *** `adjust-window-trailing-edge' adjustments.
3507 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3508 is able to resize other windows if a window adjacent to the trailing
3509 edge cannot be shrunk any more. This makes its behavior more similar to
3510 that of Emacs 21 without compromising, however, its inability to delete
3511 windows which was introduced in Emacs 22.
3513 *** Window-local buffer lists.
3514 Windows now have local buffer lists. This means that removing a buffer
3515 from display in a window will preferably show the buffer previously
3516 shown in that window with its previous window-start and window-point
3517 positions. This also means that the same buffer may be automatically
3518 shown twice even if it already appears in another window.
3520 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3521 which if non-nil requires the buffer to be displayed in the currently
3522 selected window, signaling an error otherwise. If nil, another window
3523 can be used, e.g. if the selected one is strongly dedicated.
3525 *** `split-window-vertically' and `split-window-horizontally' renamed
3526 to `split-window-below' and `split-window-right' respectively.
3527 The old names are kept as aliases.
3531 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3532 named ACTION, and takes a display action of the same form as
3533 `display-buffer-base-action' (see Changes, above). A non-nil,
3534 non-list value is treated specially, as the old meaning.
3536 **** New variable `display-buffer-overriding-action'.
3538 **** The procedure of `display-buffer' etc. to choose a window is
3539 determined by combining `display-buffer-overriding-action',
3540 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3541 and `display-buffer-fallback-action'. The second and fourth of these
3542 are user-customizable variables.
3544 See the docstring of `display-buffer' for details.
3546 *** New functions `window-state-get' and `window-state-put'.
3547 These functions allow to save and restore the state of an arbitrary
3548 frame or window as an Elisp object.
3552 *** New variable `completion-extra-properties' used to specify extra
3553 properties of the current completion:
3554 - :annotate-function, same as the old completion-annotate-function.
3555 - :exit-function, function to call after completion took place.
3557 *** Functions on `completion-at-point-functions' can return any of the
3558 properties valid for `completion-extra-properties'.
3560 *** `completion-annotate-function' is obsolete.
3562 *** New `metadata' method for completion tables. The metadata thus returned
3563 can specify various details of the data returned by `all-completions':
3564 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3565 used to select a style in completion-category-overrides.
3566 - `annotation-function' to add annotations in *Completions*.
3567 - `display-sort-function' to specify how to sort entries in *Completions*.
3568 - `cycle-sort-function' to specify how to sort entries when cycling.
3570 *** `minibuffer-local-filename-must-match-map' is not used any more.
3571 Instead, the bindings in `minibuffer-local-filename-completion-map'
3572 are combined with `minibuffer-local-must-match-map'.
3574 *** New variable `completing-read-function' allows overriding the
3575 behavior of `completing-read'.
3577 ** `glyphless-char-display' can now distinguish between graphical and
3578 text terminal display, via a char-table entry that is a cons cell.
3580 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3581 Instead, the offending function is removed.
3585 *** New function `run-hook-wrapped' for running an abnormal hook by
3586 passing the hook functions as arguments to a "wrapping" function.
3587 Like `run-hook-with-args-until-success', it stops at the first
3588 non-nil return value.
3590 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3591 set of "wrapping" filters, similar to around advice.
3592 (A version of this macro was actually added in Emacs 23.2 but was not
3593 advertised at the time.)
3597 *** New macro `condition-case-unless-debug' (this was actually added in
3598 Emacs 23.1 as condition-case-no-debug, but not advertised)
3600 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3602 *** Variable `stack-trace-on-error' removed.
3604 *** The debugger can now "continue" from an error, which means it will
3605 jump to the error handler as if the debugger had not been invoked
3606 instead of jumping all the way to the top-level.
3608 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3609 This can be useful when `inhibit-quit' is set.
3611 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3612 named Emacs server instances.
3614 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3615 to redirect STDOUT to a file.
3617 ** The function `format-time-string' now supports the %N directive,
3618 for higher-resolution time stamps.
3620 ** New input reading functions
3622 *** New function `read-char-choice' reads a restricted set of
3623 characters, discarding any inputs not inside the set.
3625 *** The command `read-color' now requires a match for a color name
3626 or RGB triplet, instead of signaling an error if the user provides
3629 **** `facemenu-read-color' is now an alias for `read-color'.
3631 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3632 The variable is now used to load all kind of supported dynamic libraries,
3633 not just image libraries. The previous name is still available as an
3636 ** Syntax parsing changes
3638 *** New variable `syntax-propertize-function'.
3639 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3640 This allows syntax-table properties to be set independently from font-lock:
3641 just call syntax-propertize to make sure the text is propertized.
3642 Together with this new variable come a new hook
3643 syntax-propertize-extend-region-functions, as well as two helper functions:
3644 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3645 as-is; and syntax-propertize-rules which provides a new way to specify
3648 *** Syntax tables support a new "comment style c" additionally to style b.
3650 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3652 ** frame-local variables cannot be let-bound any more.
3654 ** Major and minor mode changes
3656 *** `set-auto-mode' now respects mode: local variables at the end of files,
3657 as well as those in the -*- line.
3659 *** `prog-mode' is a new major mode from which programming modes
3662 **** `prog-mode-hook' can be used to enable features for programming
3663 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3664 on-the-fly spell checking for comments and strings.
3666 *** New hook `change-major-mode-after-body-hook', run by
3667 `run-mode-hooks' just before any other mode hooks.
3669 *** Enabled globalized minor modes can be disabled in specific major modes.
3670 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3671 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3673 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3675 ** File-handling changes
3677 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3678 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3679 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3680 argument is supplied (see Trash changes, above).
3682 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3684 ** Tool-bars can display separators.
3685 Tool-bar separators are handled like menu separators in menu-bar maps,
3686 i.e. via menu entries of the form `(menu-item "--")'.
3690 *** Animated images support (currently animated gifs only).
3692 **** `image-animated-p' returns non-nil if an image can be animated.
3694 **** `image-animate' animates a supplied image spec.
3696 **** `image-animate-timer' returns the timer object for an image that
3699 *** `image-extension-data' has been renamed to `image-metadata'.
3700 The old name is an obsolete alias to the new one.
3702 *** Image mode can view any image type that ImageMagick supports.
3703 This requires Emacs to be built with ImageMagick support.
3705 **** New function `imagemagick-types', defined if ImageMagick support
3706 is enabled, returns a list of image file extensions that your
3707 ImageMagick installation supports.
3709 **** New function `imagemagick-register-types' enables ImageMagick
3710 image types in Image mode and in `create-image' and other helper
3713 **** New option `imagemagick-types-inhibit' excludes certain
3714 ImageMagick image types from `imagemagick-register-types'.
3716 **** With ImageMagick support, there are extra Image mode commands to
3717 resize and rotate images: `image-transform-fit-to-height',
3718 `image-transform-fit-to-width', `image-transform-set-rotation', and
3719 `image-transform-set-scale'.
3721 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3722 passes it to the mail user agent function. This argument specifies an
3723 action for returning to the caller after finishing with the mail. For
3724 example, this is used by Rmail to optionally delete a mail window.
3726 ** XML and HTML parsing
3727 If Emacs is compiled with libxml2 support, there are two new
3728 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3729 and `libxml-parse-xml-region' (which parses XML). Both return an
3730 Emacs Lisp parse tree.
3732 ** Networking and encryption changes
3734 *** `open-network-stream' can now be used to open an encrypted stream.
3735 It now accepts an optional `:type' parameter for initiating a TLS
3736 connection, directly or via STARTTLS. To do STARTTLS, additional
3737 parameters (`:end-of-command', `:success', `:capabilities-command')
3738 must also be supplied.
3740 *** New library gnutls.el.
3741 The new function `gnutls-available-p' returns non-nil if Emacs is
3742 built with GnuTLS support. The main entry points are
3743 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3744 these functions through `open-network-stream', because that can
3745 upgrade connections through STARTTLS opportunistically or use plain
3746 SSL, depending on your needs. For debugging, set `gnutls-log-level'
3749 *** New primitive `secure-hash' that supports many secure hash algorithms:
3750 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3751 sha1.el has been removed. The `sha1' feature is provided by default.
3755 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3757 ** Progress reporters can now "spin".
3758 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3759 now be nil, or omitted. This makes a "non-numeric" reporter. Each
3760 time you call `progress-reporter-update' on that progress reporter,
3761 with a nil or omitted VALUE argument, the reporter message is
3762 displayed with a "spinning bar".
3764 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
3765 being reverted, even if the buffer has a local `revert-buffer-function'.
3767 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3768 If delayed-warnings-list is non-nil, the command loop calls
3769 `delayed-warnings-hook' after `post-command-hook'. At present, this
3770 is only used by Emacs on some platforms to display warnings during
3771 startup, which might otherwise not be noticed. This uses the
3772 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
3774 ** rx.el has a new `group-n' construct for explicitly numbered groups.
3776 ** New function `make-composed-keymap' that constructs a new keymap
3777 from multiple input maps. You can use this to make a keymap that
3778 inherits from multiple maps, eg:
3779 (set-keymap-parent newmap (make-composed-keymap othermap parent))
3781 ** New function `string-prefix-p'.
3782 (This was actually added in Emacs 23.2 but was not advertised at the time.)
3784 ** New reader macro ## that stands for the empty symbol.
3785 This means that the empty symbol can now be read back. Also, #: by itself
3786 (when not immediately followed by a possible symbol character) stands for
3787 an empty uninterned symbol.
3789 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
3791 ** The following functions and variables are obsolete:
3793 *** `tooltip-use-echo-area' is obsolete.
3794 Rather than setting this to t, disable Tooltip mode instead.
3796 *** buffer-substring-filters is obsolete.
3797 Use `filter-buffer-substring-functions' instead.
3799 *** `byte-compile-disable-print-circle' is obsolete.
3801 *** `deferred-action-list' and `deferred-action-function' are obsolete.
3802 Use `post-command-hook' instead.
3804 *** `font-lock-maximum-size' is obsolete.
3807 * Changes in Emacs 24.1 on Non-Free Operating Systems
3809 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
3810 and also when HOME is set to C:\ by default.
3812 ** New configure.bat options
3814 *** --enable-checking builds Emacs with extra runtime checks.
3816 *** --distfiles specifies files to be included in binary distribution.
3818 *** --without-gnutls disables automatic GnuTLS detection.
3820 *** --lib for general library linkage, works with the USER_LIBS build variable.
3822 ** New make target `dist' to create binary distribution for MS Windows.
3824 ** The Lisp function `w32-default-color-map' is now obsolete.
3825 (It is only used internally in the Emacs C code.)
3827 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3828 reappear on mouse-over. (Requires OS X 10.6 or later.)
3830 ** On Mac OS X, dragging a file into Emacs visits the file, like on
3831 other platforms, rather than inserting its contents into the buffer.
3834 ----------------------------------------------------------------------
3835 This file is part of GNU Emacs.
3837 GNU Emacs is free software: you can redistribute it and/or modify
3838 it under the terms of the GNU General Public License as published by
3839 the Free Software Foundation, either version 3 of the License, or
3840 (at your option) any later version.
3842 GNU Emacs is distributed in the hope that it will be useful,
3843 but WITHOUT ANY WARRANTY; without even the implied warranty of
3844 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3845 GNU General Public License for more details.
3847 You should have received a copy of the GNU General Public License
3848 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
3853 paragraph-separate: "[
\f]*$"