1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2010-2013 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
9 This file is about changes in Emacs version 24.
11 See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12 and NEWS.1-17 for changes in older Emacs versions.
14 You can narrow news to a specific version by calling `view-emacs-news'
15 with a prefix argument or by typing C-u C-h C-n.
18 +++ indicates that all necessary updates to the manuals in doc/ are complete.
19 --- means no change in the manuals is needed.
20 When you add a new item, use the appropriate mark if you know it applies,
21 otherwise leave it unmarked.
24 * Installation Changes in Emacs 24.4
26 ** Emacs can be compiled with ACL support.
27 This happens by default if a suitable support library is found at
28 build time, like libacl on GNU/Linux. To prevent this, use the
29 configure option `--disable-acl'.
31 ** Emacs can be compiled with file notification support.
32 This happens by default if a suitable system library is found at
33 build time. To prevent this, use the configure option
34 `--with-file-notification-no'. See below for file-notify features.
35 FIXME? This feature is not available for the Nextstep port. (?)
37 ** The configure option `without-compress-info' has been generalized,
38 and renamed to `without-compress-install'. It now prevents compression
39 of _any_ files during installation.
41 ** The configure option --with-crt-dir has been removed.
42 It is no longer needed, as the crt*.o files are no longer linked
45 ** Directories passed to configure option `--enable-locallisppath' are
46 no longer created during installation.
48 ** Emacs can be compiled with zlib support. If this library is present
49 (which it normally is on most systems), the function
50 `zlib-decompress-region' becomes available, which can decompress gzip-
51 and zlib-format compressed data.
54 ** Emacs for NS (OSX, GNUStep) can be built with ImageMagick support.
55 pkg-config is required to find ImageMagick libraries.
57 ** For OSX >= 10.5, the Core text based font backend from the Mac port is used.
58 For GNUStep and OSX 10.4 the old backend is used.
59 To use the old backend by default, do on the command line:
60 % defaults write org.gnu.Emacs FontBackend ns
63 * Startup Changes in Emacs 24.4
66 * Changes in Emacs 24.4
69 ** Emacs now supports menus on text-mode terminals.
70 If the terminal supports a mouse, clicking on the menu bar, or on
71 sensitive portions of the mode line or header line, will drop down the
72 menu defined at that position. Likewise, clicking C-mouse-2 or
73 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
76 If the text terminal does not support a mouse, you can activate the
77 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
79 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
80 customize the option `tty-menu-open-use-tmm' to a non-nil value.
81 (Typing M-` will always invoke `tmm-menubar', even if
82 `tty-menu-open-use-tmm' is nil.)
84 ** Key ? also describes prefix bindings like C-h.
87 ** `cache-long-line-scans' has been renamed to `cache-long-scans'
88 because it affects caching of paragraph scanning results as well.
91 ** `apropos-variable' is now `apropos-user-option'
92 `apropos-user-option' shows all user options while `apropos-variable'
93 shows all variables. When called with a universal prefix argument,
94 the two commands swap their behaviors. When `apropos-do-all' is
95 non-nil, they output the same results.
98 ** `eval-defun' on an already defined defcustom calls the :set function,
101 ** If the new variable `enable-dir-local-variables' is nil,
102 directory local variables are ignored. May be useful for some modes
103 that want to ignore directory-locals while still respecting file-locals.
105 ** The option `set-mark-default-inactive' has been deleted.
106 This unfinished feature was introduced by accident in Emacs 23.1;
107 simply disabling Transient Mark mode does the same thing.
109 ** `initial-buffer-choice' can now specify a function to set up the
112 ** The *Messages* buffer is created in a new major mode `messages-buffer-mode',
113 and read-only. Code that might create the *Messages* buffer should
114 call the function `messages-buffer' to do so and set the mode.
116 ** `remember-notes' creates a buffer whose content is saved on kill-emacs.
117 You may think of it as a *scratch* buffer whose content is preserved.
118 In fact, it was designed as a replacement for *scratch* buffer and can
119 be used that way by setting `initial-buffer-choice' to `remember-notes'
120 and `remember-notes-buffer-name' to "*scratch*". Without the second
121 change, *scratch* buffer will still be there for notes that do not
122 need to be preserved.
124 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
126 ** ACL support has been added.
128 *** Emacs preserves the ACL entries of files when backing up.
130 *** New functions `file-acl' and `set-file-acl' get and set the ACL
131 entries of a file. On GNU/Linux, the POSIX ACL interface is used via
132 libacl. On MS-Windows, the NT Security APIs are used to emulate the
133 POSIX ACL interfaces.
135 ** New option `scroll-bar-adjust-thumb-portion'.
136 Available only on X, this option allows to control over-scrolling
137 using the scroll bar (i.e. dragging the thumb down even when the end
138 of the buffer is visible).
140 ** New function `add-face-text-property' has been added, which can be
141 used to conveniently prepend/append new face attributes to text.
143 ** In compiled Lisp files, the header no longer includes a timestamp.
145 ** Multi-monitor support has been added.
147 *** New functions `display-monitor-attributes-list' and
148 `frame-monitor-attributes' can be used to obtain information about
149 each physical monitor on multi-monitor setups.
151 *** The functions `display-pixel-width' and `display-pixel-height' now
152 behave consistently among the platforms: they return the pixel width
153 or height for all physical monitors associated with the given display
154 as just they were on X11. To get information for each physical
155 monitor, use the new functions above. Similar notes also apply to
156 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
157 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
159 ** New macro `alternatives-define' can be used to define generic commands.
160 Generic commands are interactive functions whose implementation can be
161 selected among several alternatives, as a matter of user preference.
163 ** The blink cursor stops blinking after 10 blinks (default) on X and NS.
164 You can change the default by customizing the variable blink-cursor-blinks.
165 Also timers for blinking are stopped when no blinking is done, so Emacs does
166 not consume CPU cycles.
168 ** New command `frameset-to-register' is now bound to `C-x r f', replacing
169 `frame-configuration-to-register'. It offers similar functionality, plus
170 some enhancements, like the ability to restore deleted frames. Command
171 `frame-configuration-to-register' is still available, but unbound.
173 ** The command `quail-help' is deleted. Use `C-h C-\'
174 (`describe-input-method') instead.
177 * Editing Changes in Emacs 24.4
179 ** `split-window' is no longer a command, just a non-interactive function.
180 As a command it was a special case of `split-window-below', and as such
181 superfluous. After being reimplemented in Lisp, its interactive form
182 was mistakenly retained.
184 ** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
185 bound to <f11> and M-<f10>, respectively.
187 ** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
191 ** New option `visual-order-cursor-movement'.
192 If this is non-nil, cursor motion with arrow keys will follow the
193 visual order of characters on the screen: <left> always moves to the
194 left, <right> always moves to the right, disregarding the surrounding
195 bidirectional context.
197 ** New command `kmacro-to-register' to store keyboard macros in registers.
201 *** `sh-mode' now has the mode own `add-log-current-defun-function'.
202 You can pick the name of the function and the variables with `C-x 4 a'.
205 * Changes in Specialized Modes and Packages in Emacs 24.4
207 ** The debugger's `e' command evaluates the code in the context at point.
208 This includes using the lexical environment at point, which means that
209 `e' now lets you access lexical variables as well.
211 ** `eshell' now supports visual subcommands and options
212 Eshell has been able to handle "visual" commands (interactive,
213 non-line oriented commands such as top that require display
214 capabilities not provided by eshell) by running them in an Emacs
215 terminal emulator. See `eshell-visual-commands'.
217 This feature has been extended to subcommands and options that make a
218 usually line-oriented command a visual command. Typical examples are
219 "git log" and "git <command> --help" which display their output in a
220 pager by default. See `eshell-visual-subcommands' and
221 `eshell-visual-options'.
223 ** If your Emacs is compiled with libxml2 support, you can use the new
224 built-in web browser `eww'.
226 ** `remember' can now store notes in separates files
227 You can use the new function `remember-store-in-files' within the
228 `remember-handler-functions' option.
230 See `remember-data-directory' and `remember-directory-file-name-format'
231 for new options related to this function.
233 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
235 ~/.emacs.d/timelog replaces ~/.timelog
236 ~/.emacs.d/vip replaces ~/.vip
237 ~/.emacs.d/viper replaces ~/.viper
238 ~/.emacs.d/ido.last replaces ~/.ido.last
239 ~/.emacs.d/kkcrc replaces ~/.kkcrc
240 ~/.emacs.d/quickurls replaces ~/.quickurls
241 ~/.emacs.d/idlwave replaces ~/.idlwave
242 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
243 ~/.emacs.d/places replaces ~/.emacs-places
244 ~/.emacs.d/shadows replaces ~/.shadows
245 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
246 ~/.emacs.d/strokes replaces ~/.strokes
247 ~/.emacs.d/notes replaces ~/.notes
248 ~/.emacs.d/type-break replaces ~/.type-break
249 Also the following files used by the now obsolete otodo-mode.el:
250 ~/.emacs.d/todo-do replaces ~/.todo-do
251 ~/.emacs.d/todo-done replaces ~/.todo-done
252 ~/.emacs.d/todo-top replaces ~/.todo-top
255 ** Delphi mode is now called OPascal mode.
256 *** All delphi-* variables and functions have been renamed to opascal-*.
257 *** `delphi-newline-always-indents' is not supported any more.
258 Use `electric-indent-mode' instead.
259 *** `delphi-tab' is gone, replaced by `indent-for-tab-command'.
261 ** Eldoc Mode works properly in the minibuffer.
263 ** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.
265 ** completing-read-multiple's separator can now be a regexp.
266 The default separator is changed to allow surrounding spaces around the comma.
270 *** Battery information via the BSD `apm' utility is now supported.
274 *** `M-s a C-o' shows lines matching a regexp in marked buffers using Occur.
276 ** Calendar and Diary
278 *** New faces: `calendar-weekday-header', `calendar-weekend-header',
279 `calendar-month-header'.
281 *** New option `calendar-day-header-array'.
283 *** The variable `calendar-font-lock-keywords' is obsolete.
286 *** New variable `diary-from-outlook-function', used by the command
287 `diary-from-outlook'.
289 ** VC and related modes
291 *** In VC directory mode, `D' displays diffs between VC-controlled
292 whole tree revisions.
294 *** In VC directory mode, `L' lists the change log for the current VC
295 controlled tree in a window.
297 *** In VC directory mode, `I' shows a log of changes that will be
298 received with a pull operation.
300 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
301 under current version control system. When called with a prefix
302 argument, you can remove a file from the ignored file list.
304 *** `cvs-append-to-ignore' has been renamed to `vc-cvs-append-to-ignore'
305 because it is moved to vc-cvs.el.
309 *** New macro cl-tagbody.
312 *** letf is now just an alias for cl-letf.
316 *** Calc by default now uses the Gregorian calendar for all dates, and
317 uses January 1, 1 AD as its day number 1. Previously Calc used the
318 Julian calendar for dates before September 14, 1752, and it used
319 December 31, 1 BC as its day number 1; the new scheme is more
320 consistent with Calendar's calendrical system and day numbering.
322 *** The new variable `calc-gregorian-switch' lets you configure the
323 date when Calc switches from the Julian to the Gregorian calendar.
324 Nil, the default value, means to always use the Gregorian calendar.
325 The value (YEAR MONTH DAY) means to start using the Gregorian calendar
328 *** Support for ISO 8601 dates.
332 *** `desktop-auto-save-timeout' defines the number of seconds between
333 auto-saves of the desktop.
335 *** `desktop-restore-frames', enabled by default, allows saving and
336 restoring the frame/window configuration (frameset). Additional options
337 `desktop-restore-in-current-display', `desktop-restore-reuses-frames'
338 and `desktop-restore-forces-onscreen' offer further customization.
342 *** New minor mode `dired-hide-details-mode' hides details.
346 *** New option `erc-accidental-paste-threshold-seconds'.
347 If set to a number, this can be used to avoid accidentally paste large
348 amounts of data into the ERC input.
352 *** New option `epa-mail-aliases'.
354 You can set this to a list of alias expansions for keys to use
355 in `epa-mail-encrypt'.
357 If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
358 that means: when one of the recipients of the message being encrypted
359 is `foo@bar.com', encrypt the message for `foo@hello.org' instead.
361 If one element of the variable's value is ("foo@bar.com"),
362 that means: when one of the recipients of the message being encrypted
363 is `foo@bar.com', ignore that name as regards encryption.
364 This is useful to avoid a query when you have no key for that name.
367 ** New F90 mode option `f90-smart-end-names'.
369 ** Icomplete is a bit more like Ido.
370 *** key bindings to navigate through and select the completions.
371 *** The icomplete-separator is customizable, and its default has changed.
372 *** Removed icomplete-show-key-bindings.
373 *** Icomplete-mode by defaults applies to all forms of minibuffer completion.
374 (setq icomplete-with-completion-tables '(internal-complete-buffer))
375 will revert to the old behavior.
379 *** Ido has a manual now.
380 *** `ido-use-virtual-buffers' takes a new value 'auto.
381 *** `ido-decorations' has been slightly extended to give a bit more control.
385 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
386 visit the next image file and the previous image file in the same
387 directory, respectively.
389 *** New commands to show specific frames of multi-frame images.
390 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
391 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
393 *** New commands to speed up, slow down, or reverse animation.
396 *** The command `image-mode-fit-frame' deletes other windows.
397 When toggling, it restores the frame's previous window configuration.
398 It also has an optional frame argument, which can be used by Lisp
399 callers to fit the image to a frame other than the selected frame.
403 *** New face `info-index-match' is used to highlight matches in index
404 entries displayed by `Info-index-next', `Info-virtual-index' and
409 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
410 will cycle through faces in `hi-lock-face-defaults' without prompting.
413 *** New global command `M-s h .' (`highlight-symbol-at-point')
414 highlights the symbol found near point without prompting,
415 using the next face automatically.
417 ** Search and Replace
419 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
420 starts a symbol (identifier) incremental search forward with the
421 symbol found near point added to the search string initially.
423 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
424 and adds it to the search string.
426 *** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
427 between nil and the value of the option `search-invisible' (or `open'
430 *** `query-replace' skips invisible text when `search-invisible' is nil,
431 and opens overlays with hidden text when `search-invisible' is `open'.
434 *** By default, prefix arguments do not now terminate Isearch mode.
435 Set `isearch-allow-prefix' to nil to restore old behavior.
437 *** More Isearch commands accept prefix arguments, namely
438 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
441 *** Word search now matches whitespace at the beginning/end
442 of the search string if it contains leading/trailing whitespace.
443 In an incremental word search or when using a non-nil LAX argument
444 of `word-search-regexp', the lax matching can also match part of
445 the first word (in addition to the lax matching of the last word).
446 The same rules are now applied to the symbol search with the difference
447 that it matches symbols, and non-symbol characters between symbols.
449 ** MH-E has been updated to MH-E version 8.5.
450 See MH-E-NEWS for details.
453 ** The unrmail command converts from BABYL to mboxrd rather than mboxo.
454 Customize `unrmail-mbox-format' to change this.
457 ** Similarly, customize `rmail-mbox-format' to influence some minor aspects
458 of how Rmail displays non-MIME messages.
461 ** New function `ses-rename-cell' to give SES cells arbitrary names.
463 ** trace-function was largely rewritten.
464 New features include:
465 - no prompting for the destination buffer, unless a prefix-arg was used.
466 - additionally to prompting for a destination buffer, when a prefix-arg is
467 used, the user can enter a "context", i.e. Lisp expression whose value at the
468 time the function is entered/exited will be printed along with the function
469 name and arguments. Useful to trace the value of (current-buffer) or
470 (point) when the function is invoked.
472 ** New command `delete-duplicate-lines' has new types of operation:
473 When its arg ADJACENT is non-nil (when called interactively with C-u C-u)
474 it works like the utility `uniq'. Otherwise by default it deletes
475 duplicate lines everywhere in the region without regard to adjacency.
476 When its arg KEEP-BLANKS is non-nil (when called interactively with
477 C-u C-u C-u), duplicate blank lines are preserved.
479 ** New `cycle-spacing' command allows cycling between having just one
480 space, no spaces, or reverting to the original spacing. Like
481 `just-one-space' command it can handle or ignore newlines and
482 leave different number of spaces.
484 ** Todo mode has been rewritten and enhanced.
485 New features include:
486 - support for multiple todo files and archive files of done items;
487 - renaming, reordering, moving, merging, and deleting categories;
488 - sortable tabular summaries of categories and the types of items they contain;
489 - cross-category lists of items filtered by specific criteria;
490 - more fine-grained interaction with the Emacs diary, by being able to decide
491 for each todo item whether it appears in the Fancy Diary display;
492 - highly flexible new item insertion and item editing;
493 - moving items between categories, storing done items in their category or in
494 archive files, undoing or unarchiving done items;
495 - reprioritizing items by inputting a numerical priority;
496 - extensive customizability of operation and display, including numerous faces.
497 The Todo mode user manual describes all commands and most user options.
498 To support some of these features, a new file format is used, which is
499 incompatible with the old format; however, you can convert old todo and done
500 item files to the new format on initializing the first new todo file, or at any
501 later time with the provided conversion command. The old version of
502 todo-mode.el has been made obsolete and renamed otodo-mode.el.
506 *** The experimental url syntax for remote file names is withdrawn.
509 *** New connection method "adb", which allows to access Android
510 devices by the Android Debug Bridge. The variable `tramp-adb-program'
511 can be used to adapt the path of the "adb" program, if needed.
513 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
514 "scpc" and "rsyncc" are discontinued. The ssh option
515 "ControlMaster=auto" is set automatically in all ssh-based methods,
519 *** Handlers for `file-acl' and `set-file-acl' for remote machines
520 which support POSIX ACLs.
523 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
524 for remote machines which support filesystem notifications.
528 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
530 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
534 *** The commands `woman-default-faces' and `woman-monochrome-faces'
535 are obsolete. Customize the `woman-*' faces instead.
539 *** Added Eshell-Tramp module
540 External su and sudo commands are now the default; the internal,
541 Tramp-using variants can still be used by enabling the eshell-tramp
544 ** New term.el option `term-suppress-hard-newline'.
546 ** Obsolete packages:
548 *** longlines.el is obsolete; use visual-line-mode instead.
553 *** terminal.el is obsolete; use term.el instead.
555 *** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.
560 *** yow.el is obsolete; use fortune.el or cookie1.el instead.
563 *** The Info-edit command is obsolete. Editing Info nodes by hand
564 has not been relevant for some time.
568 *** `explicit-bash-args' now always defaults to use --noediting.
569 During initialization, Emacs no longer expends a process to decide
570 whether it is safe to use Bash's --noediting option. These days
571 --noediting is ubiquitous; it was introduced in 1996 in Bash version 2.
574 * New Modes and Packages in Emacs 24.4
576 ** New `superword-mode' in subword.el
577 `superword-mode' overrides the default word motion commands to treat
578 symbol_words as a single word, similar to what `subword-mode' does and
579 using the same internal functions.
581 ** New nadvice.el package offering lighter-weight advice facilities.
583 - add-function/remove-function which can be used to add/remove code on any
584 function-carrying place, such as process-filters or `<foo>-function' hooks.
585 - advice-add/advice-remove to add/remove a piece of advice on a named function,
586 much like `defadvice' does.
588 ** New frameset.el package.
589 It provides a set of operations to save a frameset (the state of all
590 or a subset of the existing frames and windows, somewhat similar to a
591 frame configuration), both in-session and persistently, and restore it
592 at some point in the future.
595 ** The package filenotify.el provides an interface for file system
596 notifications. It requires, that Emacs is compiled with one of the
597 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
600 * Incompatible Lisp Changes in Emacs 24.4
602 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
604 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
605 Some languages match those as »...« and others as «...» so better stay neutral.
607 ** The default file coding for Emacs Lisp files is now utf-8.
608 (See file-coding-system-alist.) In most cases, this change is transparent, but
609 files that contain unusual characters without specifying an explicit coding
610 system may fail to load with obscure errors.
611 You should either convert them to utf-8 or add an explicit `coding:' cookie.
613 ** overriding-terminal-local-map does not replace the local keymaps any more.
614 It used to disable the minor mode, major mode, and text-property keymaps,
615 whereas now it simply has higher precedence.
617 ** Default process filters and sentinels are not nil any more.
618 Instead they default to a function which does what the nil value used to do.
620 ** `read-event' does not return decoded chars in ttys any more.
621 Just as was the case in Emacs-22 and before, decoding of tty input according to
622 keyboard-coding-system is not performed in read-event any more. But contrary
623 to that past, it is still done before input-decode-map/function-key-map/...
625 ** Removed inhibit-local-menu-bar-menus.
627 ** frame-local variables that affect redisplay do not work any more.
628 More specifically, the redisplay does not bother to check for a frame-local
629 value when looking up variables.
631 ** nil and "unbound" are indistinguishable in symbol-function.
632 `symbol-function' never signals `void-function' any more.
633 `fboundp' returns non-nil if the symbol was `fset' to nil.
635 ** `defadvice' does not honor the `freeze' flag and cannot advise
636 special-forms any more.
638 ** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
639 VAR was bound to nil which was not tremendously useful and just lead to
640 spurious warnings about an unused var.
642 ** The return value of `backup-buffer' has changed.
643 The second argument is no longer an SELinux context, instead it is an
644 alist of extended attributes as returned by the new function
645 `file-extended-attributes'. The attributes can be applied to another
646 file using `set-file-extended-attributes'.
648 ** `visited-file-modtime' now returns -1 for nonexistent files.
649 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
650 in the presence of files with negative time stamps.
652 ** The cars of the elements in `interpreter-mode-alist' are now treated
653 as regexps rather than literal strings. Technically this is an
654 incompatible change, but unless you are using interpreter-mode-alist
655 for something (not just adding elements to it), it ought not to affect you.
658 * Lisp Changes in Emacs 24.4
660 ** Functions that pop up menus and dialogs now work on all terminal types.
661 This includes `x-popup-menu', `x-popup-dialog', `message-box',
664 The function `display-popup-menus-p' will now return non-nil for a
665 display or frame whenever a mouse is supported on that display or
668 ** New bool-vector set operation functions:
669 *** `bool-vector-exclusive-or'
670 *** `bool-vector-union'
671 *** `bool-vector-intersection'
672 *** `bool-vector-set-difference'
673 *** `bool-vector-not'
674 *** `bool-vector-subsetp'
675 *** `bool-vector-count-matches'
676 *** `bool-vector-count-matches-at'
678 ** Comparison functions =, <, >, <=, >= now take many arguments.
680 ** The second argument of `eval' can now be a lexical-environment.
682 ** `with-demoted-errors' takes an additional argument `format'.
684 ** New function `define-error'.
686 ** New hook `tty-setup-hook'.
689 ** New macro with-eval-after-load. Like eval-after-load, but better behaved.
691 ** Obsoleted functions:
694 *** `lisp-complete-symbol'
696 *** `minibuffer-completion-contents'
697 *** `isearch-nonincremental-exit-minibuffer'
698 *** `isearch-filter-visible'
699 *** `generic-make-keywords-list'
701 ** `with-wrapper-hook' is obsoleted by `add-function'.
702 The few hooks that used with-wrapper-hook are replaced as follows:
703 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
704 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
705 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
707 ** `split-string' now takes an optional argument TRIM.
708 The value, if non-nil, is a regexp that specifies what to trim from
709 the start and end of each substring.
711 ** `get-upcase-table' is obsoleted by the new `case-table-get-table'.
713 ** Support for filesystem notifications.
714 Emacs now supports notifications of filesystem changes, such as
715 creation, modification, and deletion of files. This requires the
716 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
717 MS-Windows systems, this is supported for Windows XP and newer
720 ** Changes in autorevert.el
723 *** If Emacs is compiled with file notification support, notifications
724 are used instead of checking the time stamp of the files. You can
725 disable this by setting the user option `auto-revert-use-notify' to
726 nil. Alternatively, a regular expression of directories to be
727 excluded from file notifications can be specified by
728 `auto-revert-notify-exclude-dir-regexp'.
731 *** The new user option `auto-revert-remote-files' enables reversion
732 of remote files when set to non-nil.
736 *** The function `face-spec-set' is now analogous to `setq' for face specs.
737 Its third arg now accepts values specifying exactly which face spec to
738 set (defface, custom, or user spec), and it directly sets the relevant
739 property using the supplied face spec.
741 *** Face specs set via Custom themes now replace the `defface' spec
742 rather than inheriting from it (as do face specs set via Customize).
744 *** New face characteristic (supports :underline (:style wave))
745 specifies whether or not the terminal can display a wavy line.
750 *** `image-animated-p' is now `image-multi-frame-p'.
751 It returns non-nil for any image that contains multiple frames,
752 whether or not it specifies a frame delay.
755 *** When animating images that do not specify a frame delay,
756 Emacs uses `image-default-frame-delay'.
759 *** New functions `image-current-frame' and `image-show-frame' for getting
760 and setting the current frame of a multi-frame image.
762 *** You can change the speed of animated images.
764 ** Changes in encoding and decoding of text
767 *** New coding-system `prefer-utf-8'.
768 This is like `undecided' but prefers UTF-8 on decoding if the text to
769 be decoded does not contain any invalid UTF-8 sequences. On encoding,
770 any non-ASCII characters are automatically encoded as UTF-8.
773 *** New attributes of coding-systems whose type is `undecided'.
774 Two new attributes, `:inhibit-null-byte-detection' and
775 `:inhibit-iso-escape-detection', determine how to detect encoding of
776 text that includes null bytes and ISO-2022 escape sequences,
777 respectively. Each of these attributes can be either nil, zero, or
778 t. If it is t, decoding text ignores null bytes and, respectively,
779 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
780 with no-conversion and ISO-2022 sequences cause Emacs to assume the
781 text is encoded in one of the ISO-2022 encodings, such as
782 iso-2022-7bit. If the value is zero, Emacs consults the variables
783 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
785 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
786 UTF-8 encoding and decoding, whenever possible.
788 These attributes are only meaningful for coding-systems of type
789 `undecided'. (The type of a coding-system is determined by its
790 `:coding-type' attribute and can be accessed by calling the
791 `coding-system-type' function.)
793 ** The function `set-visited-file-modtime' now accepts a 0 or -1 argument
794 with the same interpretation as the returned value of `visited-file-modtime'.
796 ** time-to-seconds is not obsolete any more.
797 ** New functions special-form-p and macrop.
798 ** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
799 text-property on the first char.
801 ** The `defalias-fset-function' property lets you catch calls to defalias
802 and redirect them to your own function instead of `fset'.
804 ** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
805 When you edit DIR/FILE, Emacs normally creates a symbolic link
806 DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
807 is being edited. Formerly, if there was already a non-symlink file
808 named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
809 through DIR/.#FILE.9. These fallbacks have been removed, so that
810 Emacs now no longer locks DIR/FILE in that case.
812 On file systems that do not support symbolic links, the lock is now a
813 regular file with contents being what would have been in the symlink.
815 ** The 9th element returned by `file-attributes' is now unspecified.
816 Formerly, it was t if the file's gid would change if file were deleted
817 and recreated. This value has been inaccurate for years on many
818 platforms, and nobody seems to have noticed or cared.
820 ** The function `file-ownership-preserved-p' now has an optional
821 argument GROUP which causes it check for file group too. This can be
822 used in place of the 9th element of `file-attributes'.
824 ** New functions `group-gid' and `group-real-gid'.
826 ** The 6th argument to `copy-file' has been renamed to
827 `preserve-extended-attributes' as it now handles both SELinux context
830 ** The `common-substring' argument of display-completion-list is obsolete.
831 Either use `completion-all-completions' which already returns highlighted
832 strings (including for partial or substring completion) or call
833 `completion-hilit-commonality' to add the highlight.
835 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
837 *** The package descriptor and name of global variables, constants,
838 and functions should be separated by two hyphens if the symbol is not
839 meant to be used by other packages.
842 * Changes in Emacs 24.4 on Non-Free Operating Systems
844 ** The procedure for building Emacs on MS-Windows has changed.
845 It is now built by running the same configure script as on all other
846 platforms. This requires the MSYS environment and MinGW development
847 tools. See the updated instructions in nt/INSTALL for details.
849 Using the Posix configure script and Makefile's also means a change in
850 the directory structure of the Emacs installation on Windows. It is
851 now the same as on GNU and Unix systems. In particular, the auxiliary
852 programs, such as cmdproxy.exe and hexl.exe, are in
853 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
854 version), version-independent site-lisp is in share/emacs/site-lisp,
855 version-specific Lisp files are in share/emacs/VERSION/lisp and in
856 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
857 files are in share/emacs/VERSION/etc. (Emacs knows about all these
858 directories and will find the files in there automatically; there's no
859 need to set any variables due to this change.)
862 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
863 The backtrace is written to the 'emacs_backtrace.txt' file in the
864 directory where Emacs was running.
867 ** The variable `buffer-file-type' is no longer supported.
868 Setting it has no effect, and %t in the mode-line format is ignored.
869 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
870 modifying it has no effect.
873 ** Lock files now work on MS-Windows.
874 This allows to avoid losing your edits if the same file is being
875 edited in another Emacs session or by another user. See the node
876 "Interlocking" in the Emacs User Manual for the details. To disable
877 file locking, customize `create-lockfiles' to nil.
879 ** Improved fullscreen support on Mac OS X.
880 Both native (>= OSX 10.7) and "old style" fullscreen are supported.
881 Customize `ns-use-native-fullscreen' to change style. For >= 10.7
882 native is the default.
885 * Installation Changes in Emacs 24.3
887 ** The default X toolkit is now Gtk+ version 3.
888 If you don't pass `--with-x-toolkit' to configure, or if you use
889 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
890 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
891 You can explicitly require a specific version by passing
892 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
894 ** New configure option `--enable-link-time-optimization', to utilize
895 an appropriate feature provided by GCC since version 4.5.0.
897 ** New configure option `--without-all' to disable most of the optional
898 features (image support, etc.) that are normally enabled by default.
900 ** New configure option `--enable-gcc-warnings' (for developing/debugging
901 Emacs). If building with GCC, this enables compile-time checks that
902 warn/give errors about possibly-questionable C code. On a recent GNU
903 system there should be no warnings; on older and on non-GNU systems
904 the results may be useful to developers.
906 ** The configure option `--enable-use-lisp-union-type' has been
907 renamed to `--enable-check-lisp-object-type', as the resulting
908 Lisp_Object type no longer uses a union to implement the compile time
909 check that this option enables.
911 ** The configure option `--disable-maintainer-mode' has been removed,
912 as it was confusingly-named and rarely useful.
914 ** The configure options `--program-prefix', `--program-suffix', and
915 `--program-transform-name' apply to more than just the installed
916 binaries. Now they also affect the man pages, icons, and the
917 etc/emacs.desktop file; but not the info pages, since this would break
918 links between the various manuals.
920 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
921 overwriting "emacs" in the installation bin/ directory with a link
924 ** Emacs uses libtinfo in preference to libncurses, if available.
926 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
927 /usr/pkg/lib to the linker search path. You must add them yourself if
930 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
931 (from the bin and libexec directories, respectively). The former is
932 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
935 * Startup Changes in Emacs 24.3
937 ** Emacs no longer searches for `leim-list.el' files beneath the standard
938 lisp/ directory. There should not be any there anyway. If you have
939 been adding them there, put them somewhere else; e.g., site-lisp.
941 ** The `--no-site-lisp' command line option now works for Nextstep builds.
944 * Changes in Emacs 24.3
948 *** `C-h f' (`describe-function') can now perform autoloading.
949 When this command is called for an autoloaded function whose docstring
950 contains a key substitution construct, that function's library is
951 automatically loaded, so that the documentation can be shown
952 correctly. To disable this, set `help-enable-auto-load' to nil.
954 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
955 even after their associated libraries have been loaded (and the
956 autoloads have been redefined as functions).
960 *** Images displayed via ImageMagick now support transparency and the
961 :background image specification property.
963 *** When available, ImageMagick support is automatically enabled.
964 It is no longer necessary to call `imagemagick-register-types'
965 explicitly to install ImageMagick image types; that function is called
966 automatically at startup, or when customizing an imagemagick- option.
968 *** Setting `imagemagick-types-inhibit' to t now disables the use of
969 ImageMagick to view images. (You must call `imagemagick-register-types'
970 afterwards if you do not use customize to change this.)
972 *** The new variable `imagemagick-enabled-types' also affects which
973 ImageMagick types are treated as images. The function
974 `imagemagick-filter-types' returns the list of types that will be
977 *** ImageMagick images now support the :max-width and :max-height
980 *** Some data types aren't auto-detected by ImageMagick. Adding
981 :format to `create-image' may help if the content type is in the
982 new variable `image-format-suffixes'.
986 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
987 next and previous path separator, respectively.
989 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
990 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
991 non-nil before enabling the mode.
995 *** New option `mode-line-default-help-echo' specifies the help text
996 (shown in a tooltip or in the echo area) for any part of the mode line
997 that does not have its own specialized help text.
999 *** You can now click mouse-3 in the coding system indicator to invoke
1000 `set-buffer-file-coding-system'.
1002 ** Server and client
1004 *** emacsclient now obeys string values for `initial-buffer-choice',
1005 if it is told to open a new frame without specifying any file to visit
1006 or expression to evaluate.
1008 *** New option `server-auth-key' specifies a shared server key.
1010 ** Emacs now generates backtraces on fatal errors.
1011 On encountering a fatal error, Emacs now outputs a textual description
1012 of the fatal signal, and a short backtrace on platforms like glibc
1013 that support backtraces.
1015 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1016 This minor mode replaces `toggle-read-only', which is now obsolete.
1018 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1019 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1020 respectively, without exiting from the prompt.
1022 ** In the Package Menu, newly-available packages are listed as "new",
1023 and sorted above the other "available" packages by default.
1025 ** If your Emacs was built from a bzr checkout, the new variable
1026 `emacs-bzr-version' contains information about the bzr revision used.
1028 ** New option `create-lockfiles' specifies usage of lockfiles.
1029 It defaults to t. Changing it to nil inhibits the creation of lock
1030 files (use this with caution).
1032 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1033 variables on remote hosts.
1035 ** The entry for PCL-CVS has been removed from the Tools menu.
1036 The PCL-CVS commands are still available via the keyboard.
1038 ** Using "unibyte: t" in Lisp source files is obsolete.
1039 Use "coding: raw-text" instead.
1041 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1042 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1043 The previous binding, introduced in Emacs 24.1, was a mistake, because
1044 `C-c LETTER' bindings are reserved for user customizations.
1046 ** Internationalization
1048 *** New language environment: Persian.
1050 *** New input method `vietnamese-vni'.
1052 ** Nextstep (GNUstep / Mac OS X) port
1054 *** Support for fullscreen and the frame parameter fullscreen.
1056 *** A file dialog is used for open/save operations initiated from the
1060 * Editing Changes in Emacs 24.3
1062 ** Search and Replace
1064 *** Non-regexp Isearch now performs "lax" space matching.
1065 Each sequence of spaces in the supplied search string may match any
1066 sequence of one or more whitespace characters, as specified by the
1067 variable `search-whitespace-regexp'. (This variable is also used by a
1068 similar existing feature for regexp Isearch.)
1070 *** New Isearch command `M-s SPC' toggles lax space matching.
1071 This applies to both ordinary and regexp Isearch.
1073 *** New option `replace-lax-whitespace'.
1074 If non-nil, `query-replace' uses flexible whitespace matching too.
1077 *** Global `M-s _' starts a symbol (identifier) incremental search,
1078 and `M-s _' in Isearch toggles symbol search mode.
1079 `M-s c' in Isearch toggles search case-sensitivity.
1081 ** Navigation commands
1083 *** New binding `M-g c' for `goto-char'.
1085 *** New binding `M-g TAB' for `move-to-column'.
1087 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1088 interactively with no prefix arg. Previously, it moved to column 1.
1090 ** New option `yank-handled-properties' allows processing of text
1091 properties on yanked text, in ways that are more general than just
1092 removing them (as is done by `yank-excluded-properties').
1094 ** New option `delete-trailing-lines' specifies whether
1095 M-x delete-trailing-whitespace should delete trailing lines at the end
1096 of the buffer. It defaults to t.
1098 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1100 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1101 `ucs-insert' is now an obsolete alias for `insert-char'.
1103 ** The `z' key no longer has a binding in most special modes.
1104 It used to be bound to `kill-this-buffer', but `z' is too easy to
1107 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1108 It copies the region-rectangle as the last rectangle kill.
1112 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1114 *** New option `register-separator' specifies the register containing
1115 the text to put between collected texts for use with
1116 M-x append-to-register and M-x prepend-to-register.
1119 * Changes in Specialized Modes and Packages in Emacs 24.3
1121 ** Common Lisp emulation (CL)
1123 *** CL's main entry is now (require 'cl-lib).
1124 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1125 i.e., all its definitions have the "cl-" prefix (and internal definitions
1126 use the "cl--" prefix).
1128 If `cl' provided a feature under the name `foo', then `cl-lib'
1129 provides it under the name `cl-foo' instead; with the exceptions of the
1130 few `cl' definitions that had to use `foo*' to avoid conflicts with
1131 pre-existing Elisp entities. These have been renamed to `cl-foo'
1132 rather than `cl-foo*'.
1134 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1135 provide the old, non-prefixed names. Some exceptions are listed below:
1137 *** `cl-flet' is not like `flet' (which is deprecated).
1138 Instead it obeys the behavior of Common-Lisp's `flet'.
1139 In particular, in cl-flet function definitions are lexically scoped,
1140 whereas in flet the scoping is dynamic.
1142 *** `cl-labels' is slightly different from `labels'.
1143 The difference is that it relies on the `lexical-binding' machinery
1144 (as opposed to the `lexical-let' machinery used previously) to capture
1145 definitions in closures, so such closures will only work if `lexical-binding'
1148 *** `cl-letf' is not exactly like `letf'.
1149 The only difference is in details that relate to some deprecated usage
1150 of `symbol-function' in place forms.
1152 *** `progv' was rewritten to use the `let' machinery.
1153 A side effect is that variables without corresponding values are bound
1154 to nil rather than being made unbound.
1156 *** The following methods of extending `setf' are obsolete
1157 (use features from gv.el instead):
1158 `define-modify-macro' (use `gv-letplace')
1159 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1160 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1161 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1165 *** Changes are now highlighted using the same color scheme as in
1166 modern VCSes. Deletions are displayed in red (new faces
1167 `diff-refine-removed' and `smerge-refined-removed', and new definition
1168 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1169 and `smerge-refined-added', and new definition of `diff-added').
1171 *** The variable `diff-use-changed-face' defines whether to use the
1172 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1173 changes in context diffs.
1175 *** The new command `diff-delete-trailing-whitespace' removes trailing
1176 whitespace introduced by a diff.
1178 ** Ediff now uses the same color scheme as Diff mode.
1182 A new version of python.el, which provides several new features, including:
1183 per-buffer shells, better indentation, Python 3 support, and improved
1184 shell-interaction compatible with iPython (and virtually any other
1187 *** Some user options have been replaced/renamed, including (old -> new):
1188 **** python-indent -> python-indent-offset
1189 **** python-guess-indent -> python-indent-guess-indent-offset
1190 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1191 **** python-use-skeletons -> python-skeleton-autoinsert
1193 *** Some user options have been removed, including:
1195 **** `python-indent-string-contents': Strings are never indented.
1197 **** `python-honour-comment-indentation':
1198 Comments are always considered as indentation markers.
1200 **** `python-continuation-offset': Indentation is automatically
1201 calculated in a pep8 compliant way depending on the context.
1203 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1204 Have no direct mapping as the shell interaction is completely different.
1206 **** `python-python-command', `python-jython-command':
1207 Replaced by `python-shell-interpreter'.
1209 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1210 `python-pdbtrack-minor-mode-string', `python-source-modes':
1213 *** Some commands have been replaced (old -> new):
1214 **** python-insert-class -> python-skeleton-class
1215 **** python-insert-def -> python-skeleton-def
1216 **** python-insert-for -> python-skeleton-for
1217 **** python-insert-if -> python-skeleton-if
1218 **** python-insert-try/except -> python-skeleton-try
1219 **** python-insert-try/finally -> python-skeleton-try
1220 **** python-insert-while -> python-skeleton-while
1221 **** python-find-function -> python-nav-jump-to-defun
1222 **** python-next-statement -> python-nav-forward-sentence
1223 **** python-previous-statement -> python-nav-backward-sentence
1224 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1225 **** python-end-of-defun-function -> python-nav-end-of-defun
1226 **** python-send-buffer -> python-shell-send-buffer
1227 **** python-send-defun -> python-shell-send-defun
1228 **** python-send-region -> python-shell-send-region
1229 **** python-send-region-and-go -> emulate with python-shell-send-region
1230 and python-shell-switch-to-shell
1231 **** python-send-string -> python-shell-send-string
1232 **** python-switch-to-python -> python-shell-switch-to-shell
1233 **** python-describe-symbol -> python-eldoc-at-point
1237 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1239 *** The D-Bus object manager interface is implemented.
1241 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
1242 if their value does not fit into Emacs's integer range.
1244 *** The function `dbus-call-method' is now non-blocking.
1245 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
1247 *** Signals can also be sent as unicast messages.
1249 *** The argument list of `dbus-register-signal' has been extended,
1250 according to the new match rule types of D-Bus.
1252 *** `dbus-init-bus' supports private connections.
1254 *** There is a new function `dbus-setenv'.
1256 ** `desktop-path' no longer includes the "." directory.
1257 Desktop files are now located in ~/.emacs.d by default.
1261 *** `dired-do-async-shell-command' executes each file sequentially
1262 if the command ends in `;' (when operating on multiple files).
1263 Otherwise, it executes the command on each file in parallel.
1265 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1266 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
1269 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
1270 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
1271 mark/unmark/flag all files in the active region.
1273 *** The minibuffer default for `=' (`dired-diff') has changed.
1274 It is now the backup file for the file at point, if one exists.
1275 In Transient Mark mode the default is the file at the active mark.
1277 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1278 The global binding for `M-=', `count-words-region' is in effect.
1282 *** New module "notifications", which can send a notification when you
1283 receive a private message or your nickname is mentioned.
1285 *** ERC will look up server/channel names via auth-source and use any
1288 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1289 only applies to messages sent by lurkers.
1291 ** reStructuredText mode
1293 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1294 fontification, comment handling, and customization have all been revised
1297 *** Support for `imenu' and `which-function-mode'.
1299 *** The reStructuredText syntax is more closely covered.
1300 Sphinx support has been improved.
1302 *** `rst-insert-list' inserts new list or continues existing lists.
1304 *** A negative prefix argument always works for `rst-adjust'.
1306 *** The window configuration is reset after displaying a TOC.
1308 *** The constant `rst-version' describes the rst.el package version.
1312 *** Support for percent literals and recognition of regular expressions
1313 in method calls without parentheses with more methods, including Cucumber
1316 *** Improved syntax highlighting and indentation.
1318 *** New command `ruby-toggle-block', bound to `C-c {'.
1320 *** Some non-standard keybindings/commands have been removed:
1322 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
1324 **** `ruby-mark-defun'; use `mark-defun'.
1326 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1327 appropriate settings for the variables `beginning-of-defun-function'
1328 and `end-of-defun-function'.
1330 **** Non-standard keybindings for `backward-kill-word', `comment-region',
1331 `reindent-then-newline-and-indent' and `newline' have been removed.
1333 ** Shell Script mode
1335 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1337 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1339 *** `sh-use-smie' lets you choose a new indentation and navigation code.
1343 *** The free software compiler GHDL is supported (and now the default).
1345 *** Support for the VHDL-AMS packages has been added/updated.
1347 *** Updated to the 2002 revision of the VHDL standard.
1349 *** Accepts \r and \f as whitespace.
1353 *** The faces used by Apropos are now directly customizable.
1354 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1355 see the `apropos' Custom group for details.
1357 *** The old options whose values specified faces to use have been removed
1358 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1362 *** This package has been rewritten to use Tabulated List mode.
1364 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
1365 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1369 *** Algebraic simplification mode is now the default.
1370 To restrict to the limited simplifications given by the former
1371 default simplification mode, use `m I'.
1375 *** You can customize the header text that appears above each calendar month.
1376 See the variable `calendar-month-header'.
1378 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
1380 *** The calendars produced by cal-html include holidays.
1381 Customize `cal-html-holidays' to change this.
1385 *** The major modes from the parser generators "Bovine" and "Wisent"
1386 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1387 are in `auto-mode-alist', and the corresponding manuals are included.
1391 **** Menu support for the "Configuration" feature. This allows users to
1392 choose the active configuration (such as debug or install) from the menu.
1394 **** New command `ede-set' to interactively set project-local variables.
1396 **** Support for compiling, debugging, and running in "generic" projects.
1398 **** Autoconf editing support for M4 macros with complex arguments.
1400 **** Compilation support for the "linux" project type.
1402 **** "simple" projects have been removed; use "generic" projects instead.
1406 **** Support for parsing #include statements inside a namespace in C/C++.
1408 **** Improved support for 'extern "C"' declarations in C/C++.
1410 **** The ability to ignore more common special C/C++ preprocessor symbols,
1411 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1412 If available, include cdefs.h as an additional source of preprocessor symbols.
1414 **** Improved C/C++ function pointer parsing.
1416 **** In Python, support for converting imports to include file names.
1418 **** Ability to dynamically determine the Python load path.
1420 **** Support for the Python 'WITH' and 'AT' keywords.
1422 **** Improved tooltip completion.
1426 **** The SRecode manual is now included.
1428 **** Tag generation supports constructor/destructor settings and system
1429 include differentiation.
1431 **** Addition of 'Framework' support: Frameworks are specified when a
1432 particular kind of library (such as Android) is needed in a common language
1435 **** Support for nested templates and let variables override based on priority.
1437 **** Support for merging tables from multiple related modes, such as
1438 default -> c++ -> arduino.
1440 ** Compile has a new option `compilation-always-kill'.
1444 *** `custom-reset-button-menu' now defaults to t.
1446 *** Non-option variables are never matched in `customize-apropos' and
1447 `customize-apropos-options' (i.e., the prefix argument does nothing for
1448 these commands now).
1452 *** The variables `term-default-fg-color' and `term-default-bg-color'
1453 are now deprecated in favor of the customizable face `term'.
1455 *** You can customize how to display ANSI terminal colors and styles
1456 by customizing the corresponding `term-color-<COLOR>',
1457 `term-color-underline' and `term-color-bold' faces.
1461 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
1463 *** Remote processes are now also supported on remote MS-Windows hosts.
1467 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1468 Previously, this slot stored semicolon-separated attribute-value pairs
1469 appended to some imap URLs, but this is not compatible with RFC 3986.
1470 So now the `filename' slot stores the entire path and query components,
1471 and the `attributes' slot is always nil.
1473 *** New function `url-encode-url' for encoding a URI string.
1474 The `url-retrieve' function now uses this to encode its URL argument,
1475 in case that is not properly encoded.
1477 *** New command `url-cookie-list' displays all the current cookies, and
1478 allows deleting selected cookies.
1480 ** notifications.el supports now version 1.2 of the Notifications API.
1481 The function `notifications-get-capabilities' returns the supported
1484 ** Flymake uses fringe bitmaps to indicate errors and warnings.
1485 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1486 `flymake-warning-bitmap'.
1488 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1489 specifying URL types that should be converted to remote file names at
1490 the FFAP prompt. The default is now '("ftp").
1492 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
1493 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
1495 ** New option `mouse-avoidance-banish-position' specifies where the
1496 `banish' mouse avoidance setting moves the mouse.
1498 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1499 closing brackets to be aligned with the line of the opening bracket.
1501 ** In Proced mode, new command `proced-renice' renices marked processes.
1503 ** New option `async-shell-command-buffer' specifies the buffer to use
1504 for a new asynchronous `shell-command' when the default output buffer
1505 `*Async Shell Command*' is already in use.
1507 ** SQL mode has a new option `sql-db2-escape-newlines'.
1508 If non-nil, newlines sent to the command interpreter will be escaped
1509 by a backslash. The default does not escape the newlines and assumes
1510 that the sql statement will be terminated by a semicolon.
1512 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1513 (and modes that derive from it), sorts the column at point, or the Nth
1514 column if a numeric prefix argument is given.
1516 ** `which-func-modes' now defaults to t, so Which Function mode, when
1517 enabled, applies to all applicable major modes.
1519 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
1522 ** Follow mode no longer works by using advice.
1523 The option `follow-intercept-processes' has been removed.
1525 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
1527 ** Hooks renamed to avoid obsolete "-hooks" suffix:
1528 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1529 *** semantic-change-hooks -> semantic-change-functions
1530 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1531 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1532 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1533 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1534 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1535 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1536 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1537 *** rcirc-activity-hooks -> rcirc-activity-functions
1538 *** rcirc-print-hooks -> rcirc-print-functions
1539 *** dbus-event-error-hooks -> dbus-event-error-functions
1540 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1541 *** checkdoc-style-hooks -> checkdoc-style-functions
1542 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1543 *** archive-extract-hooks -> archive-extract-hook
1544 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1545 *** hfy-post-html-hooks -> hfy-post-html-hook
1546 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1547 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1548 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1549 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
1551 ** Obsolete packages
1554 In most cases, assoc+member+push+delq work just as well.
1555 And in any case it's just a terrible package: ugly semantics, terrible
1556 inefficiency, and not namespace-clean.
1565 * Incompatible Lisp Changes in Emacs 24.3
1567 ** Docstrings starting with `*' no longer indicate user options.
1568 Only variables defined using `defcustom' are considered user options.
1569 The function `user-variable-p' is now an obsolete alias for
1570 `custom-variable-p'.
1572 ** The return values of `defalias', `defun' and `defmacro' have changed,
1573 and are now undefined. For backwards compatibility, `defun' and
1574 `defmacro' currently return the name of the newly defined
1575 function/macro, but this should not be relied upon.
1577 ** `random' by default now returns a different random sequence in
1578 every Emacs run. Use `(random S)', where S is a string, to set the
1579 random seed to a value based on S, in order to get a repeatable
1580 sequence in later calls.
1582 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1583 that substring is inserted literally even if the LITERAL arg is
1584 non-nil, instead of causing an error to be signaled.
1586 ** `select-window' now always makes the window's buffer current.
1587 It does so even if the window was selected before.
1589 ** The function `x-select-font' can return a font spec, instead of a
1590 font name as a string. Whether it returns a font spec or a font name
1591 depends on the graphical library.
1593 ** `face-spec-set' no longer sets frame-specific attributes when the
1594 third argument is a frame (that usage was obsolete since Emacs 22.2).
1596 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
1598 ** The CL package's `get-setf-method' function no longer exists.
1599 Generalized variables are now part of core Emacs Lisp, and implemented
1600 differently to the way cl.el used to do it. It is not possible to
1601 define a compatible replacement for `get-setf-method'. See the file
1602 gv.el for internal details of the new implementation.
1604 ** The arguments of `dbus-register-signal' are no longer just strings,
1605 but keywords or keyword-string pairs. The old argument list will
1606 still be supported for Emacs 24.x.
1608 ** Miscellaneous name changes
1609 Some Lisp symbols have been renamed to correct their spelling,
1610 or to be more consistent with standard Emacs terminology.
1612 *** Renamed functions
1613 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
1614 **** inactivate-input-method -> deactivate-input-method
1615 **** quail-inactivate -> quail-deactivate
1616 **** robin-inactivate -> robin-deactivate
1617 **** viper-inactivate-input-method -> viper-deactivate-input-method
1618 **** viper-inactivate-input-method-action ->
1619 viper-deactivate-input-method-action
1620 **** ucs-input-inactivate -> ucs-input-deactivate
1623 The old hooks are still supported for backward compatibility, but they
1624 are deprecated and will be removed eventually.
1625 **** input-method-inactivate-hook -> input-method-deactivate-hook
1626 **** robin-inactivate-hook -> robin-deactivate-hook
1627 **** quail-inactivate-hook -> quail-deactivate-hook
1629 *** Renamed variables
1630 **** follow-deactive-menu -> follow-inactive-menu
1631 **** inactivate-current-input-method-function ->
1632 deactivate-current-input-method-function
1634 ** Some obsolete functions, variables, and faces have been removed:
1635 *** `last-input-char', `last-command-char', `unread-command-char'
1636 *** `facemenu-unlisted-faces'
1637 *** `rmail-decode-mime-charset'
1638 *** `iswitchb-read-buffer'
1639 *** `sc-version', `sc-submit-bug-report'
1640 *** `set-char-table-default'
1641 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
1642 *** `compile-internal'
1644 *** `mode-line-inverse-video'
1645 *** `follow-mode-off-hook'
1646 *** `cvs-commit-buffer-require-final-newline'
1647 (use `log-edit-require-final-newline' instead)
1648 *** `cvs-changelog-full-paragraphs'
1649 (use `log-edit-changelog-full-paragraphs' instead)
1650 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1651 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1652 *** `vc-master-templates' (use `vc-handled-backends' instead)
1653 *** `vc-checkout-carefully'
1656 * Lisp Changes in Emacs 24.3
1658 ** CL-style generalized variables are now in core Elisp.
1659 `setf' is autoloaded; `push' and `pop' accept generalized variables.
1660 You can define your own generalized variables using `gv-define-simple-setter',
1661 `gv-define-setter', etc.
1663 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1664 This can significantly speed up execution of non-byte-compiled code,
1665 but can also bump into previously unnoticed cyclic dependencies.
1666 These are generally harmless: they will simply cause the macro calls
1667 to be left for later expansion (as before), but will result in a
1668 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1669 You may wish to restructure your code so this does not happen.
1671 ** New sampling-based Elisp profiler.
1672 Try M-x profiler-start, do some work, and then call M-x profiler-report.
1673 When finished, use M-x profiler-stop. The sampling rate can be based on
1674 CPU time or memory allocations.
1676 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1677 The interpretation of the DECLS is determined by `defun-declarations-alist'.
1679 ** New macros `setq-local' and `defvar-local'.
1681 ** Face underlining can now use a wave.
1683 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
1684 of `read-regexp' accepts a string ending with a colon and space, and its
1685 second argument DEFAULTS can be a list of strings accessible via `M-n'
1686 in the minibuffer ahead of other hard-coded useful regexp-related values.
1687 More commands use `read-regexp' now to read their regexp arguments.
1691 *** New function `completion-table-with-quoting' to handle completion
1692 in the presence of quoting, such as file completion in shell buffers.
1694 *** New function `completion-table-subvert' to use an existing completion
1695 table, but with a different prefix.
1699 *** New error type and new function `user-error'.
1700 These do not trigger the debugger.
1702 *** New option `debugger-bury-or-kill', saying what to do with the
1703 debugger buffer when exiting debug.
1705 *** Set `debug-on-message' to enter the debugger when a certain
1706 message is displayed in the echo area. This can be useful when trying
1707 to work out which code is doing something.
1709 *** New var `inhibit-debugger', automatically set to prevent accidental
1710 recursive invocations.
1714 *** New command `fit-frame-to-buffer' adjusts the frame height to
1717 *** The command `fit-window-to-buffer' can adjust the frame height
1718 if the new option `fit-frame-to-buffer' is non-nil.
1720 *** New macro `with-temp-buffer-window', similar to
1721 `with-output-to-temp-buffer'.
1723 *** `temp-buffer-resize-mode' no longer resizes windows that have been
1726 *** New option `switch-to-buffer-preserve-window-point' to restore a
1727 window's point when switching buffers.
1729 *** New display action alist entries `window-height' and `window-width'
1730 specify the size of new windows created by `display-buffer'.
1732 *** New display action alist entry `pop-up-frame-parameters', if
1733 non-nil, specifies frame parameters to give any newly-created frame.
1735 *** New display action alist entry `inhibit-switch-frame', if non-nil,
1736 tells display action functions to avoid changing which frame is
1739 *** New display action alist entry `previous-window', if non-nil,
1740 specifies window to reuse in `display-buffer-in-previous-window'.
1742 *** New display action functions `display-buffer-below-selected',
1743 and `display-buffer-in-previous-window'.
1745 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1746 now accept a third argument to avoid choosing the selected window.
1748 *** Additional values recognized for option `window-combination-limit'.
1750 *** The following variables are obsolete, as they can be replaced by
1751 appropriate entries in the `display-buffer-alist' function introduced
1753 **** `dired-shrink-to-fit'
1754 **** `display-buffer-reuse-frames'
1755 **** `display-buffer-function'
1756 **** `special-display-buffer-names'
1757 **** `special-display-frame-alist'
1758 **** `special-display-function'
1759 **** `special-display-regexps'
1763 *** `current-time-string' no longer requires that its argument's year
1764 must be in the range 1000..9999. It now works with any year supported
1765 by the underlying C implementation.
1767 *** `current-time' now returns extended-format time stamps
1768 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1769 PSEC is typically a multiple of 1000 on current machines. Other
1770 functions that use this format, such as `file-attributes' and
1771 `format-time-string', have been changed accordingly. Old-format time
1772 stamps are still accepted.
1774 *** The format of timers in `timer-list' and `timer-idle-list' is now
1775 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1776 The PSECS slot is new, and uses picosecond resolution. It can be
1777 accessed via the new `timer--psecs' accessor.
1779 *** Last-modified time stamps in undo lists now are of the form
1780 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1784 *** Improved security when handling persistent objects:
1786 **** `eieio-persistent-read' now features optional arguments for specifying
1787 the class to load, as well as a flag stating whether subclasses are allowed;
1788 if provided, other classes will be rejected by the reader. For
1789 compatibility with existing code, if the class is omitted only a
1792 **** New specialized reader for pulling in classes and signaling errors
1793 without evaluation of suspicious code.
1795 **** All slots that contain objects must have a :type. Slots with lists
1796 of objects must use a new type predicate for a list of an object type.
1798 *** Support for `find-function' and similar utilities, through the addition
1799 of filename support to generated symbols.
1801 ** Floating point functions now always return special values like NaN,
1802 instead of signaling errors, if given invalid args; e.g., (log -1.0).
1803 Previously, they returned NaNs on some platforms but signaled errors
1804 on others. The affected functions are acos, asin, tan, exp, expt,
1805 log, log10, sqrt, and mod.
1807 ** New fringe bitmap `exclamation-mark'.
1809 ** Miscellaneous changes to special forms and macros
1811 *** `defun' and `defmacro' are now macros rather than special forms.
1813 *** `kbd' is now a function rather than a macro.
1815 ** Miscellaneous new functions
1817 *** `set-temporary-overlay-map' sets up a temporary keymap that
1818 takes precedence over most other maps for a short while (normally one key).
1820 *** `autoloadp' tests if its argument is an autoloaded object.
1822 *** `autoload-do-load' performs the autoloading operation.
1824 *** `buffer-narrowed-p' tests if the buffer is narrowed.
1826 *** `file-name-base' returns a file name sans directory and extension.
1828 *** `function-get' fetches a function property, following aliases.
1830 *** `posnp' tests if an object is a `posn'.
1832 *** `system-users' returns the user names on the system.
1834 *** `system-groups' returns the group names on the system.
1836 *** `tty-top-frame' returns the topmost frame of a text terminal.
1838 ** The following functions and variables are obsolete:
1839 *** `automount-dir-prefix' (use `directory-abbrev-alist')
1840 *** `buffer-has-markers-at'
1841 *** `macro-declaration-function' (use `macro-declarations-alist')
1842 *** `window-system-version' (provides no useful information)
1843 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
1844 *** `query-replace-interactive'
1845 *** `font-list-limit' (has had no effect since Emacs < 23)
1848 * Changes in Emacs 24.3 on Non-Free Operating Systems
1850 ** Cygwin builds can use the native MS Windows user interface.
1851 Pass `--with-w32' to configure. The default remains the X11 interface.
1853 ** Two new functions are available in Cygwin builds:
1854 `cygwin-convert-file-name-from-windows' and
1855 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
1856 code to access the Cygwin file-name mapping machinery to convert
1857 between Cygwin and Windows-native file and directory names.
1859 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
1860 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
1861 `mouse-autoselect-window'.
1863 ** On MS Windows Vista and later Emacs now supports symbolic links.
1865 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
1866 support for libxml2, even if its presence is detected.
1868 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1870 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
1871 directories to the search path. You must add them yourself if you want them.
1874 * Changes in Emacs 24.2
1876 ** This is mainly a bug-fix release.
1879 * Installation Changes in Emacs 24.1
1881 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1882 to configure. Note that other libraries used by Emacs, RSVG and GConf,
1883 also depend on Gtk+. You can disable them with --without-rsvg and
1886 ** Emacs can be compiled with GnuTLS support.
1887 This happens by default if a suitably recent version of the library is
1888 found at build time. To prevent this, use the configure option
1889 `--without-gnutls'. See below for GnuTLS features.
1891 ** Emacs can be compiled with SELinux support.
1892 This happens by default if a suitably recent version of the library is
1893 found at build time. To prevent this, use the configure option
1894 `--without-selinux'. See below for SELinux features.
1896 ** Emacs can be compiled with ImageMagick support.
1897 This happens by default if a suitably recent version of the library is
1898 found at build time. To prevent this, use the configure option
1899 `--without-imagemagick'. See below for ImageMagick features.
1900 This feature is not available for the Nextstep or MS ports.
1902 ** Emacs can be compiled with libxml2 support.
1903 This happens by default if a suitably recent version of the library is
1904 found at build time. To prevent this, use the configure option
1905 `--without-xml2'. See below for libxml2 features.
1907 ** By default, the installed Info and man pages are compressed.
1908 You can disable this by configuring --without-compress-info.
1910 ** New configure option --with-wide-int.
1911 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
1912 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1915 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
1916 These provide no new functionality, they just remove the need to edit
1917 lib-src/Makefile by hand in order to use the associated features.
1919 ** New configure option --enable-use-lisp-union-type.
1920 This is only useful for Emacs developers to debug certain types of bugs.
1921 This is not a new feature; only the configure flag is new.
1923 ** The standalone programs digest-doc and sorted-doc are removed.
1924 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1926 ** The standalone program `fakemail' is removed.
1927 If you need it, feedmail.el provides a superset of the functionality.
1930 * Startup Changes in Emacs 24.1
1932 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
1933 command line arguments, and the EMACS_UNIBYTE environment variable, no
1934 longer have any effect. (They were declared obsolete in Emacs 23.)
1936 ** New command line option `--no-site-lisp' removes site-lisp directories
1937 from load-path. -Q now implies this. This option does not affect the
1938 EMACSLOADPATH environment variable (and hence has no effect for
1942 * Changes in Emacs 24.1
1946 *** Many packages now use the `completion-at-point' command,
1947 rather than implementing separate completion commands.
1949 *** `completion-at-point' now handles tags and semantic completion.
1951 *** Completion in a non-minibuffer now tries to detect the end of completion
1952 and pops down the *Completions* buffer accordingly.
1954 *** New option `completion-cycle-threshold' allows completion cycling.
1956 *** New option `completion-category-overrides' for overriding the
1957 default completion style in certain circumstances.
1959 *** New completion style `substring'.
1961 *** Completion of buffer names uses `substring' completion by default.
1963 *** The option `widget-complete-field' has been removed.
1967 *** The first time you try sending mail, Emacs asks for a mail method.
1968 This is implemented by a new default for `send-mail-function', which
1969 is `sendmail-query-once'. This offers to use the smtpmail package, or
1970 to use the old defaults relying on external mail facilities
1971 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1972 `mailclient-send-it' on Windows).
1974 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
1975 transfers the report to your desktop's preferred mail client, if there
1976 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
1979 *** See Changes in Specialized Modes and Packages for SMTPmail changes
1980 and Mail mode changes
1982 ** Emacs server and client changes
1984 *** New option `server-port' specifies the port for TCP Emacs servers.
1986 *** New emacsclient argument -q/--quiet suppresses some status messages.
1988 *** New emacsclient argument --frame-parameters specifies the frame
1989 parameters of any newly-created graphical frame.
1991 *** If emacsclient shuts down due to Emacs signaling an error,
1992 its exit status is 1.
1994 *** New emacsclient argument --parent-id ID.
1995 This opens a client frame in parent X window ID, via XEmbed, similar
1996 to the --parent-id argument to Emacs.
1998 ** Internationalization changes
2000 *** Emacs now supports display and editing of bidirectional text.
2001 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2002 displayed in the correct visual order as expected by users of those
2003 scripts. The display reordering is a "full bidirectionality" class
2004 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2005 with no RTL text should look exactly the same as before.
2007 **** New buffer-local variable `bidi-display-reordering'.
2008 To disable display reordering in a buffer, change this to nil.
2010 **** New buffer-local variable `bidi-paragraph-direction'.
2011 If nil (the default), Emacs determines the base direction of each
2012 paragraph from its text, as specified by the UBA. Setting the value
2013 to `right-to-left' or `left-to-right' forces a base direction on each
2016 Paragraphs with right-to-left base direction are displayed starting at
2017 the right window edge.
2019 *** Enhanced support for characters with no glyphs in available fonts,
2020 or, on text terminals, characters that cannot be encoded by the
2021 terminal coding system. The new option `glyphless-char-display-control'
2022 specifies how to display them: as a hexadecimal code in a box, a thin
2023 1-pixel space, an empty box, etc.
2025 *** New input methods for Farsi and Bulgarian
2026 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2028 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2029 (U+2010 and U+2011).
2031 *** New Hebrew translation of the Emacs Tutorial.
2032 Type `C-u C-h t' to choose it in case your language setup doesn't
2033 automatically select it.
2035 ** An Emacs Lisp package manager is now included.
2036 This is a convenient way to download and install additional packages,
2037 from a package repository at http://elpa.gnu.org.
2039 *** M-x list-packages shows a list of packages, which can be
2040 selected for installation.
2042 *** New command `describe-package', bound to `C-h P'.
2044 *** By default, all installed packages are loaded automatically when
2045 Emacs starts up. To disable this, set `package-enable-at-startup' to
2046 nil. To specify the packages to load, customize `package-load-list'.
2048 ** Custom theme changes
2050 *** New command `M-x customize-themes', which provides a convenient
2051 interface for enabling and disabling Custom themes.
2053 *** New option `custom-theme-load-path' is the load path for themes.
2054 Emacs no longer looks for Custom themes in `load-path'. The default
2055 value of `custom-theme-load-path' says to look for themes in
2056 `custom-theme-directory', followed by a subdirectory of
2057 `data-directory' named "themes/", which contains a small selection of
2058 built-in Custom themes.
2060 *** New option `custom-safe-themes' records known-safe theme files.
2061 If a theme is not in this list, Emacs queries before loading it, and
2062 offers to save the theme to `custom-safe-themes' automatically. By
2063 default, all themes included in Emacs are treated as safe.
2065 ** Improved GTK integration
2067 *** GTK scroll-bars are now placed on the right by default.
2068 The function `set-scroll-bar-mode' can change this.
2070 *** GTK tool bars can have just text, just images or images and text.
2071 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2072 the default is taken from desktop settings.
2074 *** GTK tool bars can be placed on any edge of the frame.
2075 The frame-parameter tool-bar-position controls this. It takes the
2076 values top, left, right or bottom. The Options => Show/Hide menu has
2079 *** The default colors for selected text (the `region' face) are taken
2080 from the GTK theme when Emacs is built with GTK.
2082 *** Emacs uses GTK tooltips by default if built with GTK.
2083 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2085 ** Graphical interface changes
2087 *** On graphical displays, the mode-line no longer ends in dashes.
2088 Also, the first dash (which does not indicate anything) is just
2089 displayed as a space.
2091 *** `menu-bar-select-buffer-function' lets you choose another operation
2092 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2094 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2095 built with Xft. These fonts can be set via X resources, for example:
2096 Emacs.pane.menubar.font: Courier-12
2100 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2101 or if it receives a SIGINT signal in batch mode.
2103 *** `kill-emacs-hook' is now also run in batch mode.
2104 Third-party code which adds to `kill-emacs-hook' should check if they
2105 do the right thing in batch mode.
2107 ** Scrolling changes
2109 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2110 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2111 of buffer at first key-press (instead they move to top/bottom of buffer)
2112 when `scroll-error-top-bottom' is non-nil.
2114 *** New option `scroll-error-top-bottom' (see above).
2116 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2117 scroll a line instead of full screen.
2119 *** New property `scroll-command' should be set on a command's symbol to
2120 define it as a scroll command affected by `scroll-preserve-screen-position'.
2122 *** If you customize `scroll-conservatively' to a value greater than 100,
2123 Emacs will never recenter point in the window when it scrolls due to
2124 cursor motion commands or commands that move point (e.f., `M-g M-g').
2125 Previously, you needed to use `most-positive-fixnum' as the value of
2126 `scroll-conservatively' to achieve the same effect.
2128 *** "Aggressive" scrolling now honors the scroll margins.
2129 If you customize `scroll-up-aggressively' or
2130 `scroll-down-aggressively' and move point off the window, Emacs now
2131 scrolls the window so as to avoid positioning point inside the scroll
2134 ** Basic SELinux support has been added.
2135 This requires Emacs to be linked with libselinux at build time.
2137 *** Emacs preserves the SELinux file context when backing up.
2138 Also, the function `copy-file' has an extra optional argument for
2139 preserving SELinux context, and the return value of `backup-buffer'
2140 now includes the SELinux context.
2142 *** New functions `file-selinux-context' and `set-file-selinux-context'
2143 get and set the SELinux context of a file.
2147 *** `delete-by-moving-to-trash' now only affects commands that specify
2148 trashing. This avoids inadvertently trashing temporary files.
2150 *** Calling `delete-file' or `delete-directory' with a prefix argument
2151 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2153 ** File- and directory-local variable changes
2155 *** You can stop directory local vars from applying to subdirectories.
2156 Add an element (subdirs . nil) to the alist portion of any variables
2157 settings to indicate that the section should not apply to
2160 *** Directory local variables can apply to some file-less buffers.
2161 Affected modes include dired, vc-dir, and log-edit. For example,
2162 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2163 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2164 `hack-dir-local-variables-non-file-buffer' to support this.
2166 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2167 Instead, use "eval: (minor-mode 1)".
2169 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2170 to `inhibit-local-variables-regexps'. As the name suggests, it now
2171 applies to ALL file local variables, not just -*- lines. The
2172 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2177 *** The `quit-window' command now restores the last buffer displayed
2178 in the quitted window.
2180 *** Resizing an Emacs frame now preserves proportional window sizes,
2181 modulo restrictions like window minimum sizes and fixed-size windows.
2183 *** The behavior of `display-buffer' is now customizable in detail.
2185 **** New option `display-buffer-base-action' specifies a list of
2186 user-determined display "actions" (functions and optional arguments
2187 for choosing the displaying window).
2189 This takes precedence over the default display action, which is
2190 specified by `display-buffer-fallback-action'.
2192 **** New option `display-buffer-alist' maps buffer name regexps to
2193 display actions, taking precedence over `display-buffer-base-action'.
2195 *** New option `window-combination-limit'.
2196 The new option `window-combination-limit' allows to return the space
2197 obtained for resizing or creating a window more reliably to the window
2198 from which such space was obtained.
2200 *** New option `window-combination-resize'.
2201 The new option `window-combination-resize' allows to split a window that
2202 otherwise cannot be split because it's too small by stealing space from
2203 other windows in the same combination. Subsequent resizing or deletion
2204 of the window will resize all windows in the same combination as well.
2206 *** New option `frame-auto-hide-function' lets you choose between
2207 iconifying or deleting a frame when burying a buffer in a dedicated
2208 frame, or quitting a window showing a buffer in a frame of its own.
2210 *** New commands `maximize-window' and `minimize-window'.
2211 These maximize and minimize the size of a window within its frame.
2213 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2214 These functions allow to navigate through the live buffers that have
2215 been shown in a specific window.
2217 ** Minibuffer changes
2219 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2220 This is handy for minibuffer-only frames, and is also used for the feature
2221 where mouse-1 pops up *Messages*"', which can now easily be changed.
2223 *** Minibuffers set `truncate-lines' to nil.
2224 If you want to change the value to something else, you could use
2225 for example `minibuffer-setup-hook'.
2227 ** `auto-mode-case-fold' is now enabled by default.
2229 ** `backup-by-copying-when-mismatch' now defaults to t.
2231 ** New basic faces `error', `warning', `success'.
2232 These are used to highlight text indicating failure, caution or
2233 successful operation.
2235 ** New option `list-colors-sort' defines the color sort order
2236 for `list-colors-display'.
2238 ** The variable `focus-follows-mouse' now always defaults to nil.
2241 * Editing Changes in Emacs 24.1
2245 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2246 `isearch-yank-line'.
2248 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2249 `isearch-yank-kill'.
2251 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2253 ** New commands `count-words-region' and `count-words'.
2255 *** M-= is bound to `count-words-region', not `count-lines-region'.
2256 The `count-words-region' command, when called interactively, reports
2257 the number of lines, words, and characters in the region. It is a
2258 superset of the old `count-lines-region', which is now an obsolete
2261 ** The command `just-one-space' (M-SPC), if given a negative argument,
2262 also deletes newlines around point.
2266 *** New option `delete-active-region'.
2267 If non-nil, [delete] and DEL delete the region if it is active and no
2268 prefix argument is given. If set to `kill', those commands kill
2271 *** New command `delete-forward-char', bound to [delete].
2272 This is meant for interactive use, and obeys `delete-active-region'.
2273 The command `delete-char' does not obey `delete-active-region'.
2275 *** `delete-backward-char' is now a Lisp function.
2276 Apart from obeying `delete-active-region', its behavior is unchanged.
2277 However, the byte compiler now warns if it is called from Lisp; Lisp
2278 callers should use delete-char with a negative argument instead.
2280 *** The option `mouse-region-delete-keys' has been deleted.
2282 ** Selection changes.
2284 The default handling of clipboard and primary selections has been
2285 changed to conform with modern X applications. In short, most
2286 commands for killing and yanking text now use the clipboard, while
2287 mouse commands use the primary selection.
2289 In the following, we provide a list of these changes, followed by a
2290 list of steps to get the old behavior back if you prefer that.
2292 *** `select-active-regions' now defaults to t.
2293 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
2294 the kill ring. The selected text is put in the primary selection, if
2295 the system possesses a separate primary selection facility (e.g. X).
2297 **** `select-active-regions' also accepts a new value, `only'.
2298 This means to only set the primary selection for temporarily active
2299 regions (usually made by mouse-dragging or shift-selection);
2300 "ordinary" active regions, such as those made with C-SPC followed by
2301 point motion, do not alter the primary selection.
2303 **** `mouse-drag-copy-region' now defaults to nil.
2305 *** mouse-2 is now bound to `mouse-yank-primary'.
2306 This pastes from the primary selection, ignoring the kill-ring.
2307 Previously, mouse-2 was bound to `mouse-yank-at-click'.
2309 *** `x-select-enable-clipboard' now defaults to t on all platforms.
2311 *** `x-select-enable-primary' now defaults to nil.
2312 Thus, commands that kill text or copy it to the kill-ring (such as
2313 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2315 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
2316 exactly equivalent to M-w, C-w, and C-y respectively.
2318 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
2319 non-nil by default, as Windows does not support the primary selection
2320 between applications.
2322 *** To return to the previous behavior, do the following:
2324 **** Change `select-active-regions' to nil.
2325 **** Change `mouse-drag-copy-region' to t.
2326 **** Change `x-select-enable-primary' to t (on X only).
2327 **** Change `x-select-enable-clipboard' to nil.
2328 **** Bind `mouse-yank-at-click' to mouse-2.
2330 *** Support for X cut buffers has been removed.
2332 *** X clipboard managers are now supported.
2333 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
2335 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2336 in the current rectangle. With a prefix argument, this prompts for a
2337 number to count from and for a format string.
2339 ** `redisplay-dont-pause' now defaults to t.
2340 This makes Emacs feel more responsive to editing commands that arrive
2341 at high rate, e.g. if you lean on some key, because stopping redisplay
2342 in the middle (when this variable is nil) forces more expensive
2343 updates later on, and Emacs appears to be unable to keep up.
2345 ** The behavior of <TAB> for active regions in Text mode has changed.
2346 In Text and related modes, typing <TAB> (`indent-for-tab-command')
2347 when the region is active causes Emacs to indent all the lines in the
2348 region, aligning them with the line previous to the first line in the
2349 region (or with the left margin if there is no previous line).
2351 ** When `occur' is called with a prefix argument, matching strings are
2352 collected into the `*Occur*' buffer without line numbers. If there
2353 are parenthesized subexpressions in the specified regexp, `occur'
2354 reads replacement text that may contain \\& and \\N whose convention
2355 follows `replace-match'.
2358 * Changes in Specialized Modes and Packages in Emacs 24.1
2360 ** Archive Mode has basic support for browsing and updating 7z archives.
2364 *** BibTeX mode now supports biblatex.
2365 Use the variable `bibtex-dialect' to select different BibTeX dialects.
2366 `bibtex-entry-field-alist' is now an obsolete alias for
2367 `bibtex-BibTeX-entry-alist'.
2369 *** New command `bibtex-search-entries', bound to C-c C-a.
2371 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
2373 *** New variable `bibtex-search-entry-globally'.
2377 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
2379 *** The default browser used by the package is now the "xdg-open" program,
2380 on platforms that support it. This calls your desktop's preferred browser.
2384 *** Support for musical notes.
2386 *** Support for logarithmic units.
2388 *** No longer uses the tex prefix for TeX specific unit names when
2389 using TeX or LaTeX mode.
2391 *** New option to highlight selections using faces.
2393 *** `calc-histogram' has the option of using a vector to determine the bins.
2395 *** New "O" option prefix.
2397 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2399 ** Calendar, Diary, and Appt
2401 *** Diary entries can contain non-printing "comments".
2402 See the variable `diary-comment-start'.
2404 *** Appointments can specify their individual warning times.
2405 See the variable `appt-warning-time-regexp'.
2407 *** The function specified by `appt-disp-window-function' may be passed
2408 lists of arguments if multiple appointments are due at similar times.
2409 If you are using a custom function for this, you should update it.
2411 *** New function `diary-hebrew-birthday'.
2413 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2414 may no longer be nil, but must all be strings.
2416 *** The obsolete (since Emacs 22.1) method of enabling the appt
2417 package by adding `appt-make-list' to `diary-hook' has been removed.
2418 Use `appt-activate' instead.
2420 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
2421 appt-issue-message (use the function appt-activate)
2422 appt-visible/appt-msg-window (use the variable appt-display-format)
2424 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2425 view-diary-entries, list-diary-entries, show-all-diary-entries
2429 *** New feature to "guess" the style in an existing buffer.
2430 The main entry point is M-x c-guess.
2432 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2434 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
2435 Thus C-M-a will, by default, go to the beginning of the immediate function,
2438 *** "Macros with semicolons" can be registered for correct indentation.
2439 Where such a macro ends a line (no semicolon) the next statement is no longer
2440 parsed as a statement continuation.
2442 ** Comint and modes derived from it use the standard completion code.
2446 *** Compilation mode can be used without Font Lock mode.
2447 `compilation-parse-errors-function' is now obsolete.
2449 *** New variable `compilation-filter-start', which is bound while
2450 `compilation-filter-hook' runs. It records the start position of the
2451 text inserted by `compilation-filter'.
2453 *** `compilation-error-screen-columns' and `compilation-first-column'
2454 are obeyed in the editing buffer. So programming language modes can
2455 set them, whereas previously only the value in the *Compilation*
2460 *** Customize buffers now contain a search field.
2461 The search is performed using `customize-apropos'.
2462 To turn off the search field, set `custom-search-field' to nil.
2464 *** Options in customize group buffers start out hidden if not customized.
2465 Use the arrow to the left of the option name to toggle visibility.
2467 *** custom-buffer-sort-alphabetically now defaults to t.
2469 *** The color widget now has a "Choose" button, which allows you to
2470 choose a color via `list-colors-display'.
2474 *** It is now possible to access buses other than the default system
2477 *** The `dbus-register-method' and `dbus-register-property' functions
2478 optionally do not register names.
2480 *** The new function `dbus-register-service' registers a known service
2481 name on a D-Bus without also registering a property or a method.
2485 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2486 if called with a prefix argument, read a file name from the minibuffer
2487 instead of using the current buffer.
2489 *** The "dired local variables" feature of Dired-x is obsolete.
2490 The standard directory local variables feature replaces it.
2494 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2495 controlling attempts to autojoin a channel.
2497 *** New variable `erc-coding-system-precedence': If we use `undecided'
2498 as the server coding system, this variable will then be consulted.
2499 The default is to decode strings that can be decoded as utf-8 as
2500 utf-8, and do the normal `undecided' decoding for the rest.
2504 *** The default value of `eshell-directory-name' has changed
2505 to be an "eshell" directory in `user-emacs-directory'.
2506 The old "~/.eshell/" directory is still used if it exists, though.
2510 *** The M-x gdb command now uses the GDB Machine Interface protocol.
2511 It now supports multithread non-stop debugging and simultaneous
2512 debugging of several threads.
2516 *** RET (`image-toggle-animation') toggles animation, if applicable.
2517 Animation plays once, unless the option `image-animate-loop' is non-nil.
2521 *** New command M-x info-display-manual displays a named Info manual.
2522 If that manual is already visited in some Info buffer, it displays
2523 that buffer. (This is handy if you have many manuals in many *info*
2524 buffers, and don't remember the name of the buffer visiting the manual
2525 you want to consult.) Otherwise, it loads and displays the manual.
2527 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2528 This is for compatibility with the stand-alone Info reader program,
2529 and also because `Info-edit' is a rarely used command that is disabled
2532 ** Mail mode changes (not Message mode)
2534 *** New command M-x mail-add-attachment for adding MIME attachments
2536 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2537 (Its name is misleading, since it has nothing to do with MIME
2538 attachments.) The old name is now an obsolete alias to the new name.
2540 ** MH-E has been updated to MH-E version 8.3.1.
2541 See MH-E-NEWS for details.
2543 ** Modula-2 mode provides auto-indentation.
2545 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
2547 ** nXML mode no longer binds C-RET to `nxml-complete'.
2548 Completion is now performed via `completion-at-point', bound to C-M-i
2549 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2550 default), this performs tag completion.
2552 ** Org mode has been updated to version 7.8.09.
2553 See ORG-NEWS for details.
2555 ** Prolog mode has been completely revamped, with lots of additional
2556 functionality such as more intelligent indentation, electricity,
2557 support for more variants, including Mercury, and a lot more.
2561 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
2562 in the Rmail incoming message.
2564 *** The variable `rmail-message-filter' no longer has any effect.
2565 This change was made in Emacs 23.1 but was not advertised at the time.
2566 Try using `rmail-show-message-hook' instead.
2570 *** M-x shell prompts for the shell path name if the default directory
2571 is a remote file name and neither the environment variable $ESHELL nor
2572 the variable `explicit-shell-file-name' is set.
2574 *** TAB is now bound to the standard `completion-at-point' command,
2575 which now implements the pcomplete rules for shell command completion.
2579 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
2580 if the mail server supports them. This uses either built-in GnuTLS
2581 support, or the starttls.el library. Customize `smtpmail-stream-type'
2584 *** The variable `smtpmail-auth-credentials' has been removed.
2585 By default, the information is now stored in the file ~/.authinfo.
2586 This was the default value of smtpmail-auth-credentials. If you had
2587 customized smtpmail-auth-credentials to a list of user names and
2588 passwords, those settings are not used. During your first connection
2589 to the smtp server, Emacs will prompt for the user name and password,
2590 and offer to save them to ~/.authinfo. Or you can manually copy the
2591 credentials to ~/.authinfo. For example, if you had
2593 (setq smtpmail-auth-credentials
2594 '(("mail.example.org" 25 "jim" "s!cret")))
2596 then the equivalent line in ~/.authinfo would be
2598 machine mail.example.org port 25 login jim password s!cret
2600 See the auth-source manual for more information, e.g. on encrypting
2601 the credentials file.
2603 *** The variable `smtpmail-starttls-credentials' has been removed.
2604 If you had that set, you need to put
2606 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2608 in your ~/.authinfo file instead.
2610 *** SMTPmail defaults to using the address in the From: header as the
2611 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2612 to the address you wish to use instead.
2616 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2617 and `sql-oracle-scan-on'.
2619 *** New options controlling prompting for login parameters.
2620 Each supported product has a custom variable `sql-*-login-params',
2621 which is a list of the parameters to be prompted for before a
2622 connection is established.
2624 *** The command `sql-product-interactive' now takes a prefix argument,
2625 which causes it to prompt for an SQL product.
2627 *** Product-specific SQL interactive commands now take prefix arguments.
2628 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2629 given a prefix argument, prompt for a name for the SQL interactive
2630 buffer. This reduces the need for calling `sql-rename-buffer'.
2632 *** SQL interactive modes suppress command continuation prompts, and
2633 replace tabs with spaces. The first change impacts multiple line SQL
2634 statements entered with C-j between each line, statements yanked into
2635 the buffer and statements sent with `sql-send-*' functions. The
2636 second prevents the MySQL and Postgres interpreters from listing
2637 object name completions when sent text via `sql-send-*' functions.
2639 *** New command `sql-connect' starts a predefined SQLi session,
2640 using the login parameters from `sql-connection-alist'.
2642 *** New "Save Connection" menu item in SQLi buffers.
2643 This gathers the login params specified for the SQLi session, if it
2644 was not started by a connection, and saves them as a new connection.
2646 *** New commands for listing database objects and details:
2647 sql-list-all and sql-list-table.
2649 *** An API for manipulating SQL product definitions has been added.
2653 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
2657 *** New inline access method "ksu" (kerberized su).
2659 *** The following access methods are discontinued: "ssh1_old",
2660 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
2662 *** The user option `remote-file-name-inhibit-cache' controls whether
2663 remote file attributes are cached for better performance.
2665 *** The option `ange-ftp-binary-file-name-regexp' has changed its
2666 default value to "".
2668 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
2669 for remote machines which support SELinux.
2671 ** New function `url-queue-retrieve', which behaves like url-retrieve,
2672 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2673 the degree of parallelism.
2675 ** VC and related modes
2677 *** Support for pulling on distributed version control systems.
2678 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2679 supported (currently with Bzr, Git, and Mercurial), to update the
2680 current branch and working tree. A prefix argument means to prompt
2681 the user for specifics, e.g. a pull location.
2683 *** `vc-update' is now an alias for `vc-pull'.
2685 *** Support for merging on distributed version control systems.
2686 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2687 is supported (currently with Bzr, Git, and Mercurial), to merge
2688 changes from another branch into the current one. It prompts for
2689 specifics, e.g. a merge source.
2691 *** New option `vc-revert-show-diff' controls whether `vc-revert'
2692 shows a diff while querying the user. It defaults to t.
2694 *** Log entries in some Log View buffers can be toggled to display a
2695 longer description by typing RET (log-view-toggle-entry-display).
2696 This is currently supported for Bzr, Git, and Mercurial (to support
2697 another backend, define a `log-view-expanded-log-entry-function').
2698 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
2699 use this to display the full log entry for the revision at point.
2701 *** New command `vc-ediff' allows visual comparison of two revisions
2702 of a file similar to `vc-diff', but using ediff backend.
2704 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
2705 this was not advertised at the time.
2707 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2708 Since Emacs 23, it has done the same thing as `toggle-read-only', but
2709 this was not advertised at the time.
2715 *** erc-hecomplete.el (use erc-pcomplete.el instead)
2717 *** partial-completion-mode (complete.el) is obsolete.
2718 You can get a comparable behavior with:
2719 (setq completion-styles '(partial-completion initials))
2720 (setq completion-pcm-complete-word-inserts-delimiters t)
2722 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2724 *** pgg is obsolete (use EasyPG instead).
2726 *** sregex.el is obsolete, since rx.el is a strict superset.
2728 *** s-region.el and pc-select.el are obsolete.
2729 They are superseded by shift-select-mode, enabled by default since 23.1.
2731 *** vc-mcvs.el is obsolete (for lack of a maintainer).
2735 *** The Landmark game is now invoked with `landmark', not `lm'.
2736 Its functions and variables have been similarly renamed.
2738 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
2739 (This interfered with cua-mode.)
2741 *** f90.el has some support for Fortran 2008 syntax.
2743 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
2745 *** New command `nato-region' converts text to NATO phonetic alphabet.
2748 * New Modes and Packages in Emacs 24.1
2750 ** Occur Edit mode applies edits made in *Occur* buffers to the
2751 original buffers. It is bound to "e" in Occur mode.
2753 ** New global minor mode electric-pair-mode.
2754 When enabled, typing an open parenthesis automatically inserts the
2755 matching closing one.
2757 ** New global minor mode electric-indent-mode.
2758 When enabled, typing certain characters triggers reindentation.
2759 Major modes wishing to use this can set electric-indent-chars or
2760 electric-indent-functions.
2762 ** New global minor mode electric-layout-mode.
2763 When enabled, typing certain characters automatically inserts newlines.
2764 Major modes wishing to use this can set electric-layout-rules.
2766 ** tabulated-list.el provides a generic major mode for tabulated data,
2767 from which other modes can be derived.
2769 ** pcase.el provides the ML-style pattern matching macro `pcase'.
2771 ** secrets.el is an implementation of the Secret Service API, an
2772 interface to password managers like GNOME Keyring or KDE Wallet. The
2773 Secret Service API requires D-Bus for communication. The command
2774 `secrets-show-secrets' offers a buffer with a visualization of the
2777 ** notifications.el provides an implementation of the Desktop
2778 Notifications API. It requires D-Bus for communication.
2780 ** soap-client.el supports access to SOAP web services from Emacs.
2781 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2783 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
2785 ** New emacs-lock.el package.
2786 The previous version has been moved to obsolete/old-emacs-lock.el.
2787 Now, there is a proper minor mode `emacs-lock-mode'. Protection
2788 against exiting Emacs and killing the buffer can be set separately.
2789 The mechanism for automatically turning off protection for buffers
2790 with dead inferior processes has been generalized.
2793 * Incompatible Lisp Changes in Emacs 24.1
2795 ** Passing a nil argument to a minor mode function call now ENABLES
2796 the minor mode unconditionally. This is so that you can write e.g.
2798 (add-hook 'text-mode-hook 'foo-mode)
2800 to enable foo-mode in Text mode buffers, removing the need for
2801 `turn-on-foo-mode' style functions. This affects all mode commands
2802 defined by `define-minor-mode'. If called interactively, the mode
2803 command still toggles the minor mode.
2805 ** The return value of `backup-buffer' has changed.
2806 It is now a list of three elements, where the second element is a list
2807 describing the original file's SELinux context. If Emacs or the
2808 system lacks SELinux support, the context list is (nil nil nil nil).
2809 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
2811 ** `char-direction-table' and the `char-direction' function were deleted.
2812 They were buggy and inferior to the new support of bidirectional
2813 editing introduced in Emacs 24. If you need the bidirectional
2814 properties of a character, use `get-char-code-property' with the last
2815 argument `bidi-class'.
2817 ** `copy-directory' now copies the source directory as a subdirectory
2818 of the target directory, if the latter is an existing directory. The
2819 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2820 the contents directly into a pre-existing target directory.
2822 ** For mouse click input events in the text area, the Y pixel
2823 coordinate in the POSITION list now counts from the top of the text
2824 area, excluding any header line. Previously, it counted from the top
2827 ** Support for "old-style" backquotes, obsolete for 10+ years, has
2828 been further reduced. Now a backquote not followed by a space is
2829 always treated as a "new-style" backquote. Please remove all
2830 "old-style" backquotes from your code. If your code uses backquotes
2831 as documented in the Elisp manual, and compiles without warning, then
2832 you have nothing to do in this regard. Code not following the
2833 appropriate conventions may fail to compile.
2835 The most common cause of trouble seems to be an old-style backquote
2836 followed by a newline. Another cause of trouble is vector notation
2837 for key sequence notation: instead of [(control ,)] and [(control ')],
2838 you should write [(control ?,)] and [(control ?')], which will work in
2841 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2842 was not advertised at the time. The function `custom-initialize-delay'
2843 replaced all known uses.
2845 ** `view-buffer' now treats special mode-class in the same way that
2846 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2847 major mode is special).
2849 ** Menu and tool bar changes
2851 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
2852 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2853 With these alist entries omitted, `make-frame' checks the value of the
2854 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2855 a menu-bar or tool-bar, respectively. If the alist entries are added,
2856 they override the value of `menu-bar-mode'/`tool-bar-mode'.
2858 *** The menu bar bindings's caches are not used any more.
2859 Use (where-is-internal <def> nil t) instead.
2861 ** Regions created by mouse dragging are now normal active regions,
2862 similar to those created by shift-selection (see Selection changes
2863 above). In previous Emacs versions, these regions were delineated by
2864 `mouse-drag-overlay'; that variable has been removed.
2866 ** The fourth argument of `filter-buffer-substring' has been removed.
2867 If you want to remove text properties from the final result, simply
2868 pass the result through substring-no-properties.
2870 ** cl.el no longer provides `cl-19'.
2872 ** The following obsolete functions and aliases have been removed
2873 (the appropriate new function is given in parentheses; "not needed"
2874 means you can just remove all calls to the function in question):
2876 *** `comint-kill-output' (`comint-delete-output')
2877 *** `decompose-composite-char' (`char-to-string')
2878 *** `outline-visible' (`outline-invisible-p')
2879 *** `internal-find-face' (`facep')
2880 *** `internal-get-face' (`facep and check-face')
2881 *** `frame-update-faces' (not needed)
2882 *** `frame-update-face-colors' (`frame-set-background-mode')
2883 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2884 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
2885 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2886 *** `x-make-font-bold-italic' (`make-face-bold-italic')
2887 *** `x-make-font-unbold' (`make-face-unbold')
2888 *** `x-make-font-unitalic' (`make-face-unitalic')
2889 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2890 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2891 *** `iswitchb-default-keybindings' (`iswitchb-mode')
2892 *** `char-bytes' (== 1)
2893 *** `isearch-return-char' (`isearch-printing-char')
2894 *** `make-local-hook' (not needed)
2895 *** `set-screen-height' (`set-frame-height')
2896 *** `set-screen-width' (`set-frame-width')
2898 ** The following obsolete variables and varaliases have been removed
2899 (the appropriate new variable is given in parentheses):
2901 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2902 *** `vc-header-alist' (`vc-BACKEND-header')
2903 *** `directory-sep-char' (== ?/)
2904 *** `font-lock-defaults-alist' (`font-lock-defaults')
2905 *** `e' (`float-e').
2907 ** The following obsolete files were removed:
2908 sc.el, x-menu.el, rnews.el, rnewspost.el
2910 ** The format of the finder-inf.el file has changed, since the Finder
2911 mechanism is now based on the package system. The variable
2912 `finder-package-info' is replaced by `package--builtins' and
2913 `finder-keywords-hash'.
2915 ** When generating autoloads, `update-directory-autoloads' no longer
2916 assumes every inspected file is in your `load-path'. It instead
2917 generates relative names according to the current `load-path'.
2920 * Lisp Changes in Emacs 24.1
2922 ** Code can now use lexical scoping by default instead of dynamic scoping.
2923 The `lexical-binding' variable enables lexical scoping for local
2924 variables. It is typically set via a file-local variable in the first
2925 line of the file, in which case it applies to all the code in that
2928 *** `eval' takes a new optional argument `lexical' to choose the new lexical
2929 binding instead of the old dynamic binding mode.
2931 *** Lexically scoped interpreted functions are represented with a new form
2932 of function value which looks like (closure ENV ARGS &rest BODY).
2934 *** New macro `letrec' to define recursive local functions.
2936 *** `defvar' and `defconst' now mark the variable as special (dynamic).
2937 So do `defcustom' and other forms that call `defvar' as a subroutine.
2939 *** New function `special-variable-p' to check whether a variable is
2940 declared as dynamically bound.
2942 *** The form ((lambda ...) ...) is deprecated.
2944 ** An Emacs Lisp testing tool is now included.
2945 Emacs Lisp developers can use this tool to write automated tests for
2946 their code. See the ERT info manual for details.
2948 ** Changes for bidirectional display and editing
2950 *** New function `current-bidi-paragraph-direction'.
2951 This returns the base direction of the paragraph at point.
2953 *** New function `bidi-string-mark-left-to-right'.
2954 Given a string containing characters from right-to-left scripts, this
2955 function returns another string which can be safely inserted into a
2956 buffer, such that any following text will be always displayed to the
2957 right of that string. (This works by appending an invisible Unicode
2958 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
2960 This is useful when the buffer has overall left-to-right paragraph
2961 direction and you need to insert a string whose contents are not known
2962 in advance, without disrupting the layout of the line.
2966 *** Window tree functions are accessible in Elisp.
2967 Functions are provided to return the parent, siblings or child windows
2968 of any window including internal windows (windows not associated with a
2969 buffer) in the window tree.
2971 **** New function `window-valid-p' gives non-nil for live and internal
2974 **** Window manipulation can deal with internal windows.
2975 Many window handling functions like `split-window', `delete-window', or
2976 `delete-other-windows' as well as the window resizing functions can now
2977 act on any window including internal ones.
2979 *** window-total-height/-width vs window-body-height/-width.
2980 The function `window-height' has been renamed to `window-total-height'
2981 and `window-width' has been renamed to `window-body-width'. The old
2982 names are provided as aliases. Two new functions `window-total-width'
2983 and `window-body-height' are provided.
2985 *** Window parameters specific to window handling functions.
2986 For each window you can specify a parameter to override the default
2987 behavior of a number of functions like `split-window', `delete-window'
2988 and `delete-other-windows'. The variable `ignore-window-parameters'
2989 allows to ignore processing such parameters.
2991 *** New semantics of third argument of `split-window'.
2992 The third argument of `split-window' has been renamed to SIDE and can be
2993 set to any of the values 'below, 'right, 'above, or 'left to make the
2994 new window appear on the corresponding side of the window that shall be
2995 split. Any other value of SIDE will cause `split-window' to split the
2996 window into two side-by-side windows as before.
2998 *** Window resizing functions.
2999 A new standard function for resizing windows called `window-resize' has
3000 been introduced. This and all other functions for resizing windows no
3001 longer delete any windows when they become too small.
3003 *** Deleting the selected window now selects the most recently selected
3004 live window on that frame instead.
3006 *** `adjust-window-trailing-edge' adjustments.
3007 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3008 is able to resize other windows if a window adjacent to the trailing
3009 edge cannot be shrunk any more. This makes its behavior more similar to
3010 that of Emacs 21 without compromising, however, its inability to delete
3011 windows which was introduced in Emacs 22.
3013 *** Window-local buffer lists.
3014 Windows now have local buffer lists. This means that removing a buffer
3015 from display in a window will preferably show the buffer previously
3016 shown in that window with its previous window-start and window-point
3017 positions. This also means that the same buffer may be automatically
3018 shown twice even if it already appears in another window.
3020 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3021 which if non-nil requires the buffer to be displayed in the currently
3022 selected window, signaling an error otherwise. If nil, another window
3023 can be used, e.g. if the selected one is strongly dedicated.
3025 *** `split-window-vertically' and `split-window-horizontally' renamed
3026 to `split-window-below' and `split-window-right' respectively.
3027 The old names are kept as aliases.
3031 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3032 named ACTION, and takes a display action of the same form as
3033 `display-buffer-base-action' (see Changes, above). A non-nil,
3034 non-list value is treated specially, as the old meaning.
3036 **** New variable `display-buffer-overriding-action'.
3038 **** The procedure of `display-buffer' etc. to choose a window is
3039 determined by combining `display-buffer-overriding-action',
3040 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3041 and `display-buffer-fallback-action'. The second and fourth of these
3042 are user-customizable variables.
3044 See the docstring of `display-buffer' for details.
3046 *** New functions `window-state-get' and `window-state-put'.
3047 These functions allow to save and restore the state of an arbitrary
3048 frame or window as an Elisp object.
3052 *** New variable `completion-extra-properties' used to specify extra
3053 properties of the current completion:
3054 - :annotate-function, same as the old completion-annotate-function.
3055 - :exit-function, function to call after completion took place.
3057 *** Functions on `completion-at-point-functions' can return any of the
3058 properties valid for `completion-extra-properties'.
3060 *** `completion-annotate-function' is obsolete.
3062 *** New `metadata' method for completion tables. The metadata thus returned
3063 can specify various details of the data returned by `all-completions':
3064 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3065 used to select a style in completion-category-overrides.
3066 - `annotation-function' to add annotations in *Completions*.
3067 - `display-sort-function' to specify how to sort entries in *Completions*.
3068 - `cycle-sort-function' to specify how to sort entries when cycling.
3070 *** `minibuffer-local-filename-must-match-map' is not used any more.
3071 Instead, the bindings in `minibuffer-local-filename-completion-map'
3072 are combined with `minibuffer-local-must-match-map'.
3074 *** New variable `completing-read-function' allows overriding the
3075 behavior of `completing-read'.
3077 ** `glyphless-char-display' can now distinguish between graphical and
3078 text terminal display, via a char-table entry that is a cons cell.
3080 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3081 Instead, the offending function is removed.
3085 *** New function `run-hook-wrapped' for running an abnormal hook by
3086 passing the hook functions as arguments to a "wrapping" function.
3087 Like `run-hook-with-args-until-success', it stops at the first
3088 non-nil return value.
3090 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3091 set of "wrapping" filters, similar to around advice.
3092 (A version of this macro was actually added in Emacs 23.2 but was not
3093 advertised at the time.)
3097 *** New macro `condition-case-unless-debug' (this was actually added in
3098 Emacs 23.1 as condition-case-no-debug, but not advertised)
3100 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3102 *** Variable `stack-trace-on-error' removed.
3104 *** The debugger can now "continue" from an error, which means it will
3105 jump to the error handler as if the debugger had not been invoked
3106 instead of jumping all the way to the top-level.
3108 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3109 This can be useful when `inhibit-quit' is set.
3111 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3112 named Emacs server instances.
3114 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3115 to redirect STDOUT to a file.
3117 ** The function `format-time-string' now supports the %N directive,
3118 for higher-resolution time stamps.
3120 ** New input reading functions
3122 *** New function `read-char-choice' reads a restricted set of
3123 characters, discarding any inputs not inside the set.
3125 *** The command `read-color' now requires a match for a color name
3126 or RGB triplet, instead of signaling an error if the user provides
3129 **** `facemenu-read-color' is now an alias for `read-color'.
3131 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3132 The variable is now used to load all kind of supported dynamic libraries,
3133 not just image libraries. The previous name is still available as an
3136 ** Syntax parsing changes
3138 *** New variable `syntax-propertize-function'.
3139 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3140 This allows syntax-table properties to be set independently from font-lock:
3141 just call syntax-propertize to make sure the text is propertized.
3142 Together with this new variable come a new hook
3143 syntax-propertize-extend-region-functions, as well as two helper functions:
3144 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3145 as-is; and syntax-propertize-rules which provides a new way to specify
3148 *** Syntax tables support a new "comment style c" additionally to style b.
3150 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3152 ** frame-local variables cannot be let-bound any more.
3154 ** Major and minor mode changes
3156 *** `set-auto-mode' now respects mode: local variables at the end of files,
3157 as well as those in the -*- line.
3159 *** `prog-mode' is a new major mode from which programming modes
3162 **** `prog-mode-hook' can be used to enable features for programming
3163 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3164 on-the-fly spell checking for comments and strings.
3166 **** New minor modes `prettify-symbols-mode' and
3167 `global-prettify-symbols-mode' let the user enable symbol
3168 prettification (replacing a string like "lambda" with the Greek lambda
3171 *** New hook `change-major-mode-after-body-hook', run by
3172 `run-mode-hooks' just before any other mode hooks.
3174 *** Enabled globalized minor modes can be disabled in specific major modes.
3175 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3176 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3178 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3180 ** File-handling changes
3182 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3183 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3184 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3185 argument is supplied (see Trash changes, above).
3187 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3189 ** Tool-bars can display separators.
3190 Tool-bar separators are handled like menu separators in menu-bar maps,
3191 i.e. via menu entries of the form `(menu-item "--")'.
3195 *** Animated images support (currently animated gifs only).
3197 **** `image-animated-p' returns non-nil if an image can be animated.
3199 **** `image-animate' animates a supplied image spec.
3201 **** `image-animate-timer' returns the timer object for an image that
3204 *** `image-extension-data' has been renamed to `image-metadata'.
3205 The old name is an obsolete alias to the new one.
3207 *** Image mode can view any image type that ImageMagick supports.
3208 This requires Emacs to be built with ImageMagick support.
3210 **** New function `imagemagick-types', defined if ImageMagick support
3211 is enabled, returns a list of image file extensions that your
3212 ImageMagick installation supports.
3214 **** New function `imagemagick-register-types' enables ImageMagick
3215 image types in Image mode and in `create-image' and other helper
3218 **** New option `imagemagick-types-inhibit' excludes certain
3219 ImageMagick image types from `imagemagick-register-types'.
3221 **** With ImageMagick support, there are extra Image mode commands to
3222 resize and rotate images: `image-transform-fit-to-height',
3223 `image-transform-fit-to-width', `image-transform-set-rotation', and
3224 `image-transform-set-scale'.
3226 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3227 passes it to the mail user agent function. This argument specifies an
3228 action for returning to the caller after finishing with the mail. For
3229 example, this is used by Rmail to optionally delete a mail window.
3231 ** XML and HTML parsing
3232 If Emacs is compiled with libxml2 support, there are two new
3233 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3234 and `libxml-parse-xml-region' (which parses XML). Both return an
3235 Emacs Lisp parse tree.
3237 ** Networking and encryption changes
3239 *** `open-network-stream' can now be used to open an encrypted stream.
3240 It now accepts an optional `:type' parameter for initiating a TLS
3241 connection, directly or via STARTTLS. To do STARTTLS, additional
3242 parameters (`:end-of-command', `:success', `:capabilities-command')
3243 must also be supplied.
3245 *** New library gnutls.el.
3246 The new function `gnutls-available-p' returns non-nil if Emacs is
3247 built with GnuTLS support. The main entry points are
3248 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3249 these functions through `open-network-stream', because that can
3250 upgrade connections through STARTTLS opportunistically or use plain
3251 SSL, depending on your needs. For debugging, set `gnutls-log-level'
3254 *** New primitive `secure-hash' that supports many secure hash algorithms:
3255 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3256 sha1.el has been removed. The `sha1' feature is provided by default.
3260 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3262 ** Progress reporters can now "spin".
3263 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3264 now be nil, or omitted. This makes a "non-numeric" reporter. Each
3265 time you call `progress-reporter-update' on that progress reporter,
3266 with a nil or omitted VALUE argument, the reporter message is
3267 displayed with a "spinning bar".
3269 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
3270 being reverted, even if the buffer has a local `revert-buffer-function'.
3272 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3273 If delayed-warnings-list is non-nil, the command loop calls
3274 `delayed-warnings-hook' after `post-command-hook'. At present, this
3275 is only used by Emacs on some platforms to display warnings during
3276 startup, which might otherwise not be noticed. This uses the
3277 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
3279 ** rx.el has a new `group-n' construct for explicitly numbered groups.
3281 ** New function `make-composed-keymap' that constructs a new keymap
3282 from multiple input maps. You can use this to make a keymap that
3283 inherits from multiple maps, eg:
3284 (set-keymap-parent newmap (make-composed-keymap othermap parent))
3286 ** New function `string-prefix-p'.
3287 (This was actually added in Emacs 23.2 but was not advertised at the time.)
3289 ** New reader macro ## that stands for the empty symbol.
3290 This means that the empty symbol can now be read back. Also, #: by itself
3291 (when not immediately followed by a possible symbol character) stands for
3292 an empty uninterned symbol.
3294 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
3296 ** The following functions and variables are obsolete:
3298 *** `tooltip-use-echo-area' is obsolete.
3299 Rather than setting this to t, disable Tooltip mode instead.
3301 *** buffer-substring-filters is obsolete.
3302 Use `filter-buffer-substring-functions' instead.
3304 *** `byte-compile-disable-print-circle' is obsolete.
3306 *** `deferred-action-list' and `deferred-action-function' are obsolete.
3307 Use `post-command-hook' instead.
3309 *** `font-lock-maximum-size' is obsolete.
3312 * Changes in Emacs 24.1 on Non-Free Operating Systems
3314 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
3315 and also when HOME is set to C:\ by default.
3317 ** New configure.bat options
3319 *** --enable-checking builds Emacs with extra runtime checks.
3321 *** --distfiles specifies files to be included in binary distribution.
3323 *** --without-gnutls disables automatic GnuTLS detection.
3325 *** --lib for general library linkage, works with the USER_LIBS build variable.
3327 ** New make target `dist' to create binary distribution for MS Windows.
3329 ** The Lisp function `w32-default-color-map' is now obsolete.
3330 (It is only used internally in the Emacs C code.)
3332 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3333 reappear on mouse-over. (Requires OS X 10.6 or later.)
3335 ** On Mac OS X, dragging a file into Emacs visits the file, like on
3336 other platforms, rather than inserting its contents into the buffer.
3339 ----------------------------------------------------------------------
3340 This file is part of GNU Emacs.
3342 GNU Emacs is free software: you can redistribute it and/or modify
3343 it under the terms of the GNU General Public License as published by
3344 the Free Software Foundation, either version 3 of the License, or
3345 (at your option) any later version.
3347 GNU Emacs is distributed in the hope that it will be useful,
3348 but WITHOUT ANY WARRANTY; without even the implied warranty of
3349 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3350 GNU General Public License for more details.
3352 You should have received a copy of the GNU General Public License
3353 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
3358 paragraph-separate: "[
\f]*$"