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,
662 This includes `x-popup-menu', `x-popup-dialog', `message-box',
665 The function `display-popup-menus-p' will now return non-nil for a
666 display or frame whenever a mouse is supported on that display or
669 ** New bool-vector set operation functions:
670 *** `bool-vector-exclusive-or'
671 *** `bool-vector-union'
672 *** `bool-vector-intersection'
673 *** `bool-vector-set-difference'
674 *** `bool-vector-not'
675 *** `bool-vector-subsetp'
676 *** `bool-vector-count-matches'
677 *** `bool-vector-count-matches-at'
679 ** Comparison functions =, <, >, <=, >= now take many arguments.
681 ** The second argument of `eval' can now be a lexical-environment.
683 ** `with-demoted-errors' takes an additional argument `format'.
685 ** New function `define-error'.
687 ** New hook `tty-setup-hook'.
690 ** New macro with-eval-after-load. Like eval-after-load, but better behaved.
692 ** Obsoleted functions:
695 *** `lisp-complete-symbol'
697 *** `minibuffer-completion-contents'
698 *** `isearch-nonincremental-exit-minibuffer'
699 *** `isearch-filter-visible'
700 *** `generic-make-keywords-list'
702 ** `with-wrapper-hook' is obsoleted by `add-function'.
703 The few hooks that used with-wrapper-hook are replaced as follows:
704 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
705 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
706 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
708 ** `split-string' now takes an optional argument TRIM.
709 The value, if non-nil, is a regexp that specifies what to trim from
710 the start and end of each substring.
712 ** `get-upcase-table' is obsoleted by the new `case-table-get-table'.
714 ** Support for filesystem notifications.
715 Emacs now supports notifications of filesystem changes, such as
716 creation, modification, and deletion of files. This requires the
717 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
718 MS-Windows systems, this is supported for Windows XP and newer
721 ** Changes in autorevert.el
724 *** If Emacs is compiled with file notification support, notifications
725 are used instead of checking the time stamp of the files. You can
726 disable this by setting the user option `auto-revert-use-notify' to
727 nil. Alternatively, a regular expression of directories to be
728 excluded from file notifications can be specified by
729 `auto-revert-notify-exclude-dir-regexp'.
732 *** The new user option `auto-revert-remote-files' enables reversion
733 of remote files when set to non-nil.
737 *** The function `face-spec-set' is now analogous to `setq' for face specs.
738 Its third arg now accepts values specifying exactly which face spec to
739 set (defface, custom, or user spec), and it directly sets the relevant
740 property using the supplied face spec.
742 *** Face specs set via Custom themes now replace the `defface' spec
743 rather than inheriting from it (as do face specs set via Customize).
745 *** New face characteristic (supports :underline (:style wave))
746 specifies whether or not the terminal can display a wavy line.
751 *** `image-animated-p' is now `image-multi-frame-p'.
752 It returns non-nil for any image that contains multiple frames,
753 whether or not it specifies a frame delay.
756 *** When animating images that do not specify a frame delay,
757 Emacs uses `image-default-frame-delay'.
760 *** New functions `image-current-frame' and `image-show-frame' for getting
761 and setting the current frame of a multi-frame image.
763 *** You can change the speed of animated images.
765 ** Changes in encoding and decoding of text
768 *** New coding-system `prefer-utf-8'.
769 This is like `undecided' but prefers UTF-8 on decoding if the text to
770 be decoded does not contain any invalid UTF-8 sequences. On encoding,
771 any non-ASCII characters are automatically encoded as UTF-8.
774 *** New attributes of coding-systems whose type is `undecided'.
775 Two new attributes, `:inhibit-null-byte-detection' and
776 `:inhibit-iso-escape-detection', determine how to detect encoding of
777 text that includes null bytes and ISO-2022 escape sequences,
778 respectively. Each of these attributes can be either nil, zero, or
779 t. If it is t, decoding text ignores null bytes and, respectively,
780 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
781 with no-conversion and ISO-2022 sequences cause Emacs to assume the
782 text is encoded in one of the ISO-2022 encodings, such as
783 iso-2022-7bit. If the value is zero, Emacs consults the variables
784 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
786 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
787 UTF-8 encoding and decoding, whenever possible.
789 These attributes are only meaningful for coding-systems of type
790 `undecided'. (The type of a coding-system is determined by its
791 `:coding-type' attribute and can be accessed by calling the
792 `coding-system-type' function.)
794 ** The function `set-visited-file-modtime' now accepts a 0 or -1 argument
795 with the same interpretation as the returned value of `visited-file-modtime'.
797 ** time-to-seconds is not obsolete any more.
798 ** New functions special-form-p and macrop.
799 ** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
800 text-property on the first char.
802 ** The `defalias-fset-function' property lets you catch calls to defalias
803 and redirect them to your own function instead of `fset'.
805 ** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
806 When you edit DIR/FILE, Emacs normally creates a symbolic link
807 DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
808 is being edited. Formerly, if there was already a non-symlink file
809 named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
810 through DIR/.#FILE.9. These fallbacks have been removed, so that
811 Emacs now no longer locks DIR/FILE in that case.
813 On file systems that do not support symbolic links, the lock is now a
814 regular file with contents being what would have been in the symlink.
816 ** The 9th element returned by `file-attributes' is now unspecified.
817 Formerly, it was t if the file's gid would change if file were deleted
818 and recreated. This value has been inaccurate for years on many
819 platforms, and nobody seems to have noticed or cared.
821 ** The function `file-ownership-preserved-p' now has an optional
822 argument GROUP which causes it check for file group too. This can be
823 used in place of the 9th element of `file-attributes'.
825 ** New functions `group-gid' and `group-real-gid'.
827 ** The 6th argument to `copy-file' has been renamed to
828 `preserve-extended-attributes' as it now handles both SELinux context
831 ** The `common-substring' argument of display-completion-list is obsolete.
832 Either use `completion-all-completions' which already returns highlighted
833 strings (including for partial or substring completion) or call
834 `completion-hilit-commonality' to add the highlight.
836 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
838 *** The package descriptor and name of global variables, constants,
839 and functions should be separated by two hyphens if the symbol is not
840 meant to be used by other packages.
843 * Changes in Emacs 24.4 on Non-Free Operating Systems
845 ** The procedure for building Emacs on MS-Windows has changed.
846 It is now built by running the same configure script as on all other
847 platforms. This requires the MSYS environment and MinGW development
848 tools. See the updated instructions in nt/INSTALL for details.
850 Using the Posix configure script and Makefile's also means a change in
851 the directory structure of the Emacs installation on Windows. It is
852 now the same as on GNU and Unix systems. In particular, the auxiliary
853 programs, such as cmdproxy.exe and hexl.exe, are in
854 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
855 version), version-independent site-lisp is in share/emacs/site-lisp,
856 version-specific Lisp files are in share/emacs/VERSION/lisp and in
857 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
858 files are in share/emacs/VERSION/etc. (Emacs knows about all these
859 directories and will find the files in there automatically; there's no
860 need to set any variables due to this change.)
863 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
864 The backtrace is written to the 'emacs_backtrace.txt' file in the
865 directory where Emacs was running.
868 ** The variable `buffer-file-type' is no longer supported.
869 Setting it has no effect, and %t in the mode-line format is ignored.
870 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
871 modifying it has no effect.
874 ** Lock files now work on MS-Windows.
875 This allows to avoid losing your edits if the same file is being
876 edited in another Emacs session or by another user. See the node
877 "Interlocking" in the Emacs User Manual for the details. To disable
878 file locking, customize `create-lockfiles' to nil.
880 ** Improved fullscreen support on Mac OS X.
881 Both native (>= OSX 10.7) and "old style" fullscreen are supported.
882 Customize `ns-use-native-fullscreen' to change style. For >= 10.7
883 native is the default.
886 * Installation Changes in Emacs 24.3
888 ** The default X toolkit is now Gtk+ version 3.
889 If you don't pass `--with-x-toolkit' to configure, or if you use
890 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
891 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
892 You can explicitly require a specific version by passing
893 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
895 ** New configure option `--enable-link-time-optimization', to utilize
896 an appropriate feature provided by GCC since version 4.5.0.
898 ** New configure option `--without-all' to disable most of the optional
899 features (image support, etc.) that are normally enabled by default.
901 ** New configure option `--enable-gcc-warnings' (for developing/debugging
902 Emacs). If building with GCC, this enables compile-time checks that
903 warn/give errors about possibly-questionable C code. On a recent GNU
904 system there should be no warnings; on older and on non-GNU systems
905 the results may be useful to developers.
907 ** The configure option `--enable-use-lisp-union-type' has been
908 renamed to `--enable-check-lisp-object-type', as the resulting
909 Lisp_Object type no longer uses a union to implement the compile time
910 check that this option enables.
912 ** The configure option `--disable-maintainer-mode' has been removed,
913 as it was confusingly-named and rarely useful.
915 ** The configure options `--program-prefix', `--program-suffix', and
916 `--program-transform-name' apply to more than just the installed
917 binaries. Now they also affect the man pages, icons, and the
918 etc/emacs.desktop file; but not the info pages, since this would break
919 links between the various manuals.
921 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
922 overwriting "emacs" in the installation bin/ directory with a link
925 ** Emacs uses libtinfo in preference to libncurses, if available.
927 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
928 /usr/pkg/lib to the linker search path. You must add them yourself if
931 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
932 (from the bin and libexec directories, respectively). The former is
933 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
936 * Startup Changes in Emacs 24.3
938 ** Emacs no longer searches for `leim-list.el' files beneath the standard
939 lisp/ directory. There should not be any there anyway. If you have
940 been adding them there, put them somewhere else; e.g., site-lisp.
942 ** The `--no-site-lisp' command line option now works for Nextstep builds.
945 * Changes in Emacs 24.3
949 *** `C-h f' (`describe-function') can now perform autoloading.
950 When this command is called for an autoloaded function whose docstring
951 contains a key substitution construct, that function's library is
952 automatically loaded, so that the documentation can be shown
953 correctly. To disable this, set `help-enable-auto-load' to nil.
955 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
956 even after their associated libraries have been loaded (and the
957 autoloads have been redefined as functions).
961 *** Images displayed via ImageMagick now support transparency and the
962 :background image specification property.
964 *** When available, ImageMagick support is automatically enabled.
965 It is no longer necessary to call `imagemagick-register-types'
966 explicitly to install ImageMagick image types; that function is called
967 automatically at startup, or when customizing an imagemagick- option.
969 *** Setting `imagemagick-types-inhibit' to t now disables the use of
970 ImageMagick to view images. (You must call `imagemagick-register-types'
971 afterwards if you do not use customize to change this.)
973 *** The new variable `imagemagick-enabled-types' also affects which
974 ImageMagick types are treated as images. The function
975 `imagemagick-filter-types' returns the list of types that will be
978 *** ImageMagick images now support the :max-width and :max-height
981 *** Some data types aren't auto-detected by ImageMagick. Adding
982 :format to `create-image' may help if the content type is in the
983 new variable `image-format-suffixes'.
987 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
988 next and previous path separator, respectively.
990 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
991 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
992 non-nil before enabling the mode.
996 *** New option `mode-line-default-help-echo' specifies the help text
997 (shown in a tooltip or in the echo area) for any part of the mode line
998 that does not have its own specialized help text.
1000 *** You can now click mouse-3 in the coding system indicator to invoke
1001 `set-buffer-file-coding-system'.
1003 ** Server and client
1005 *** emacsclient now obeys string values for `initial-buffer-choice',
1006 if it is told to open a new frame without specifying any file to visit
1007 or expression to evaluate.
1009 *** New option `server-auth-key' specifies a shared server key.
1011 ** Emacs now generates backtraces on fatal errors.
1012 On encountering a fatal error, Emacs now outputs a textual description
1013 of the fatal signal, and a short backtrace on platforms like glibc
1014 that support backtraces.
1016 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1017 This minor mode replaces `toggle-read-only', which is now obsolete.
1019 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1020 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1021 respectively, without exiting from the prompt.
1023 ** In the Package Menu, newly-available packages are listed as "new",
1024 and sorted above the other "available" packages by default.
1026 ** If your Emacs was built from a bzr checkout, the new variable
1027 `emacs-bzr-version' contains information about the bzr revision used.
1029 ** New option `create-lockfiles' specifies usage of lockfiles.
1030 It defaults to t. Changing it to nil inhibits the creation of lock
1031 files (use this with caution).
1033 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1034 variables on remote hosts.
1036 ** The entry for PCL-CVS has been removed from the Tools menu.
1037 The PCL-CVS commands are still available via the keyboard.
1039 ** Using "unibyte: t" in Lisp source files is obsolete.
1040 Use "coding: raw-text" instead.
1042 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1043 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1044 The previous binding, introduced in Emacs 24.1, was a mistake, because
1045 `C-c LETTER' bindings are reserved for user customizations.
1047 ** Internationalization
1049 *** New language environment: Persian.
1051 *** New input method `vietnamese-vni'.
1053 ** Nextstep (GNUstep / Mac OS X) port
1055 *** Support for fullscreen and the frame parameter fullscreen.
1057 *** A file dialog is used for open/save operations initiated from the
1061 * Editing Changes in Emacs 24.3
1063 ** Search and Replace
1065 *** Non-regexp Isearch now performs "lax" space matching.
1066 Each sequence of spaces in the supplied search string may match any
1067 sequence of one or more whitespace characters, as specified by the
1068 variable `search-whitespace-regexp'. (This variable is also used by a
1069 similar existing feature for regexp Isearch.)
1071 *** New Isearch command `M-s SPC' toggles lax space matching.
1072 This applies to both ordinary and regexp Isearch.
1074 *** New option `replace-lax-whitespace'.
1075 If non-nil, `query-replace' uses flexible whitespace matching too.
1078 *** Global `M-s _' starts a symbol (identifier) incremental search,
1079 and `M-s _' in Isearch toggles symbol search mode.
1080 `M-s c' in Isearch toggles search case-sensitivity.
1082 ** Navigation commands
1084 *** New binding `M-g c' for `goto-char'.
1086 *** New binding `M-g TAB' for `move-to-column'.
1088 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1089 interactively with no prefix arg. Previously, it moved to column 1.
1091 ** New option `yank-handled-properties' allows processing of text
1092 properties on yanked text, in ways that are more general than just
1093 removing them (as is done by `yank-excluded-properties').
1095 ** New option `delete-trailing-lines' specifies whether
1096 M-x delete-trailing-whitespace should delete trailing lines at the end
1097 of the buffer. It defaults to t.
1099 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1101 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1102 `ucs-insert' is now an obsolete alias for `insert-char'.
1104 ** The `z' key no longer has a binding in most special modes.
1105 It used to be bound to `kill-this-buffer', but `z' is too easy to
1108 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1109 It copies the region-rectangle as the last rectangle kill.
1113 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1115 *** New option `register-separator' specifies the register containing
1116 the text to put between collected texts for use with
1117 M-x append-to-register and M-x prepend-to-register.
1120 * Changes in Specialized Modes and Packages in Emacs 24.3
1122 ** Common Lisp emulation (CL)
1124 *** CL's main entry is now (require 'cl-lib).
1125 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1126 i.e., all its definitions have the "cl-" prefix (and internal definitions
1127 use the "cl--" prefix).
1129 If `cl' provided a feature under the name `foo', then `cl-lib'
1130 provides it under the name `cl-foo' instead; with the exceptions of the
1131 few `cl' definitions that had to use `foo*' to avoid conflicts with
1132 pre-existing Elisp entities. These have been renamed to `cl-foo'
1133 rather than `cl-foo*'.
1135 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1136 provide the old, non-prefixed names. Some exceptions are listed below:
1138 *** `cl-flet' is not like `flet' (which is deprecated).
1139 Instead it obeys the behavior of Common-Lisp's `flet'.
1140 In particular, in cl-flet function definitions are lexically scoped,
1141 whereas in flet the scoping is dynamic.
1143 *** `cl-labels' is slightly different from `labels'.
1144 The difference is that it relies on the `lexical-binding' machinery
1145 (as opposed to the `lexical-let' machinery used previously) to capture
1146 definitions in closures, so such closures will only work if `lexical-binding'
1149 *** `cl-letf' is not exactly like `letf'.
1150 The only difference is in details that relate to some deprecated usage
1151 of `symbol-function' in place forms.
1153 *** `progv' was rewritten to use the `let' machinery.
1154 A side effect is that variables without corresponding values are bound
1155 to nil rather than being made unbound.
1157 *** The following methods of extending `setf' are obsolete
1158 (use features from gv.el instead):
1159 `define-modify-macro' (use `gv-letplace')
1160 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1161 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1162 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1166 *** Changes are now highlighted using the same color scheme as in
1167 modern VCSes. Deletions are displayed in red (new faces
1168 `diff-refine-removed' and `smerge-refined-removed', and new definition
1169 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1170 and `smerge-refined-added', and new definition of `diff-added').
1172 *** The variable `diff-use-changed-face' defines whether to use the
1173 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1174 changes in context diffs.
1176 *** The new command `diff-delete-trailing-whitespace' removes trailing
1177 whitespace introduced by a diff.
1179 ** Ediff now uses the same color scheme as Diff mode.
1183 A new version of python.el, which provides several new features, including:
1184 per-buffer shells, better indentation, Python 3 support, and improved
1185 shell-interaction compatible with iPython (and virtually any other
1188 *** Some user options have been replaced/renamed, including (old -> new):
1189 **** python-indent -> python-indent-offset
1190 **** python-guess-indent -> python-indent-guess-indent-offset
1191 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1192 **** python-use-skeletons -> python-skeleton-autoinsert
1194 *** Some user options have been removed, including:
1196 **** `python-indent-string-contents': Strings are never indented.
1198 **** `python-honour-comment-indentation':
1199 Comments are always considered as indentation markers.
1201 **** `python-continuation-offset': Indentation is automatically
1202 calculated in a pep8 compliant way depending on the context.
1204 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1205 Have no direct mapping as the shell interaction is completely different.
1207 **** `python-python-command', `python-jython-command':
1208 Replaced by `python-shell-interpreter'.
1210 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1211 `python-pdbtrack-minor-mode-string', `python-source-modes':
1214 *** Some commands have been replaced (old -> new):
1215 **** python-insert-class -> python-skeleton-class
1216 **** python-insert-def -> python-skeleton-def
1217 **** python-insert-for -> python-skeleton-for
1218 **** python-insert-if -> python-skeleton-if
1219 **** python-insert-try/except -> python-skeleton-try
1220 **** python-insert-try/finally -> python-skeleton-try
1221 **** python-insert-while -> python-skeleton-while
1222 **** python-find-function -> python-nav-jump-to-defun
1223 **** python-next-statement -> python-nav-forward-sentence
1224 **** python-previous-statement -> python-nav-backward-sentence
1225 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1226 **** python-end-of-defun-function -> python-nav-end-of-defun
1227 **** python-send-buffer -> python-shell-send-buffer
1228 **** python-send-defun -> python-shell-send-defun
1229 **** python-send-region -> python-shell-send-region
1230 **** python-send-region-and-go -> emulate with python-shell-send-region
1231 and python-shell-switch-to-shell
1232 **** python-send-string -> python-shell-send-string
1233 **** python-switch-to-python -> python-shell-switch-to-shell
1234 **** python-describe-symbol -> python-eldoc-at-point
1238 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1240 *** The D-Bus object manager interface is implemented.
1242 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
1243 if their value does not fit into Emacs's integer range.
1245 *** The function `dbus-call-method' is now non-blocking.
1246 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
1248 *** Signals can also be sent as unicast messages.
1250 *** The argument list of `dbus-register-signal' has been extended,
1251 according to the new match rule types of D-Bus.
1253 *** `dbus-init-bus' supports private connections.
1255 *** There is a new function `dbus-setenv'.
1257 ** `desktop-path' no longer includes the "." directory.
1258 Desktop files are now located in ~/.emacs.d by default.
1262 *** `dired-do-async-shell-command' executes each file sequentially
1263 if the command ends in `;' (when operating on multiple files).
1264 Otherwise, it executes the command on each file in parallel.
1266 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1267 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
1270 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
1271 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
1272 mark/unmark/flag all files in the active region.
1274 *** The minibuffer default for `=' (`dired-diff') has changed.
1275 It is now the backup file for the file at point, if one exists.
1276 In Transient Mark mode the default is the file at the active mark.
1278 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1279 The global binding for `M-=', `count-words-region' is in effect.
1283 *** New module "notifications", which can send a notification when you
1284 receive a private message or your nickname is mentioned.
1286 *** ERC will look up server/channel names via auth-source and use any
1289 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1290 only applies to messages sent by lurkers.
1292 ** reStructuredText mode
1294 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1295 fontification, comment handling, and customization have all been revised
1298 *** Support for `imenu' and `which-function-mode'.
1300 *** The reStructuredText syntax is more closely covered.
1301 Sphinx support has been improved.
1303 *** `rst-insert-list' inserts new list or continues existing lists.
1305 *** A negative prefix argument always works for `rst-adjust'.
1307 *** The window configuration is reset after displaying a TOC.
1309 *** The constant `rst-version' describes the rst.el package version.
1313 *** Support for percent literals and recognition of regular expressions
1314 in method calls without parentheses with more methods, including Cucumber
1317 *** Improved syntax highlighting and indentation.
1319 *** New command `ruby-toggle-block', bound to `C-c {'.
1321 *** Some non-standard keybindings/commands have been removed:
1323 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
1325 **** `ruby-mark-defun'; use `mark-defun'.
1327 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1328 appropriate settings for the variables `beginning-of-defun-function'
1329 and `end-of-defun-function'.
1331 **** Non-standard keybindings for `backward-kill-word', `comment-region',
1332 `reindent-then-newline-and-indent' and `newline' have been removed.
1334 ** Shell Script mode
1336 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1338 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1340 *** `sh-use-smie' lets you choose a new indentation and navigation code.
1344 *** The free software compiler GHDL is supported (and now the default).
1346 *** Support for the VHDL-AMS packages has been added/updated.
1348 *** Updated to the 2002 revision of the VHDL standard.
1350 *** Accepts \r and \f as whitespace.
1354 *** The faces used by Apropos are now directly customizable.
1355 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1356 see the `apropos' Custom group for details.
1358 *** The old options whose values specified faces to use have been removed
1359 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1363 *** This package has been rewritten to use Tabulated List mode.
1365 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
1366 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1370 *** Algebraic simplification mode is now the default.
1371 To restrict to the limited simplifications given by the former
1372 default simplification mode, use `m I'.
1376 *** You can customize the header text that appears above each calendar month.
1377 See the variable `calendar-month-header'.
1379 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
1381 *** The calendars produced by cal-html include holidays.
1382 Customize `cal-html-holidays' to change this.
1386 *** The major modes from the parser generators "Bovine" and "Wisent"
1387 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1388 are in `auto-mode-alist', and the corresponding manuals are included.
1392 **** Menu support for the "Configuration" feature. This allows users to
1393 choose the active configuration (such as debug or install) from the menu.
1395 **** New command `ede-set' to interactively set project-local variables.
1397 **** Support for compiling, debugging, and running in "generic" projects.
1399 **** Autoconf editing support for M4 macros with complex arguments.
1401 **** Compilation support for the "linux" project type.
1403 **** "simple" projects have been removed; use "generic" projects instead.
1407 **** Support for parsing #include statements inside a namespace in C/C++.
1409 **** Improved support for 'extern "C"' declarations in C/C++.
1411 **** The ability to ignore more common special C/C++ preprocessor symbols,
1412 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1413 If available, include cdefs.h as an additional source of preprocessor symbols.
1415 **** Improved C/C++ function pointer parsing.
1417 **** In Python, support for converting imports to include file names.
1419 **** Ability to dynamically determine the Python load path.
1421 **** Support for the Python 'WITH' and 'AT' keywords.
1423 **** Improved tooltip completion.
1427 **** The SRecode manual is now included.
1429 **** Tag generation supports constructor/destructor settings and system
1430 include differentiation.
1432 **** Addition of 'Framework' support: Frameworks are specified when a
1433 particular kind of library (such as Android) is needed in a common language
1436 **** Support for nested templates and let variables override based on priority.
1438 **** Support for merging tables from multiple related modes, such as
1439 default -> c++ -> arduino.
1441 ** Compile has a new option `compilation-always-kill'.
1445 *** `custom-reset-button-menu' now defaults to t.
1447 *** Non-option variables are never matched in `customize-apropos' and
1448 `customize-apropos-options' (i.e., the prefix argument does nothing for
1449 these commands now).
1453 *** The variables `term-default-fg-color' and `term-default-bg-color'
1454 are now deprecated in favor of the customizable face `term'.
1456 *** You can customize how to display ANSI terminal colors and styles
1457 by customizing the corresponding `term-color-<COLOR>',
1458 `term-color-underline' and `term-color-bold' faces.
1462 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
1464 *** Remote processes are now also supported on remote MS-Windows hosts.
1468 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1469 Previously, this slot stored semicolon-separated attribute-value pairs
1470 appended to some imap URLs, but this is not compatible with RFC 3986.
1471 So now the `filename' slot stores the entire path and query components,
1472 and the `attributes' slot is always nil.
1474 *** New function `url-encode-url' for encoding a URI string.
1475 The `url-retrieve' function now uses this to encode its URL argument,
1476 in case that is not properly encoded.
1478 *** New command `url-cookie-list' displays all the current cookies, and
1479 allows deleting selected cookies.
1481 ** notifications.el supports now version 1.2 of the Notifications API.
1482 The function `notifications-get-capabilities' returns the supported
1485 ** Flymake uses fringe bitmaps to indicate errors and warnings.
1486 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1487 `flymake-warning-bitmap'.
1489 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1490 specifying URL types that should be converted to remote file names at
1491 the FFAP prompt. The default is now '("ftp").
1493 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
1494 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
1496 ** New option `mouse-avoidance-banish-position' specifies where the
1497 `banish' mouse avoidance setting moves the mouse.
1499 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1500 closing brackets to be aligned with the line of the opening bracket.
1502 ** In Proced mode, new command `proced-renice' renices marked processes.
1504 ** New option `async-shell-command-buffer' specifies the buffer to use
1505 for a new asynchronous `shell-command' when the default output buffer
1506 `*Async Shell Command*' is already in use.
1508 ** SQL mode has a new option `sql-db2-escape-newlines'.
1509 If non-nil, newlines sent to the command interpreter will be escaped
1510 by a backslash. The default does not escape the newlines and assumes
1511 that the sql statement will be terminated by a semicolon.
1513 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1514 (and modes that derive from it), sorts the column at point, or the Nth
1515 column if a numeric prefix argument is given.
1517 ** `which-func-modes' now defaults to t, so Which Function mode, when
1518 enabled, applies to all applicable major modes.
1520 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
1523 ** Follow mode no longer works by using advice.
1524 The option `follow-intercept-processes' has been removed.
1526 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
1528 ** Hooks renamed to avoid obsolete "-hooks" suffix:
1529 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1530 *** semantic-change-hooks -> semantic-change-functions
1531 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1532 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1533 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1534 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1535 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1536 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1537 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1538 *** rcirc-activity-hooks -> rcirc-activity-functions
1539 *** rcirc-print-hooks -> rcirc-print-functions
1540 *** dbus-event-error-hooks -> dbus-event-error-functions
1541 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1542 *** checkdoc-style-hooks -> checkdoc-style-functions
1543 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1544 *** archive-extract-hooks -> archive-extract-hook
1545 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1546 *** hfy-post-html-hooks -> hfy-post-html-hook
1547 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1548 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1549 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1550 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
1552 ** Obsolete packages
1555 In most cases, assoc+member+push+delq work just as well.
1556 And in any case it's just a terrible package: ugly semantics, terrible
1557 inefficiency, and not namespace-clean.
1566 * Incompatible Lisp Changes in Emacs 24.3
1568 ** Docstrings starting with `*' no longer indicate user options.
1569 Only variables defined using `defcustom' are considered user options.
1570 The function `user-variable-p' is now an obsolete alias for
1571 `custom-variable-p'.
1573 ** The return values of `defalias', `defun' and `defmacro' have changed,
1574 and are now undefined. For backwards compatibility, `defun' and
1575 `defmacro' currently return the name of the newly defined
1576 function/macro, but this should not be relied upon.
1578 ** `random' by default now returns a different random sequence in
1579 every Emacs run. Use `(random S)', where S is a string, to set the
1580 random seed to a value based on S, in order to get a repeatable
1581 sequence in later calls.
1583 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1584 that substring is inserted literally even if the LITERAL arg is
1585 non-nil, instead of causing an error to be signaled.
1587 ** `select-window' now always makes the window's buffer current.
1588 It does so even if the window was selected before.
1590 ** The function `x-select-font' can return a font spec, instead of a
1591 font name as a string. Whether it returns a font spec or a font name
1592 depends on the graphical library.
1594 ** `face-spec-set' no longer sets frame-specific attributes when the
1595 third argument is a frame (that usage was obsolete since Emacs 22.2).
1597 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
1599 ** The CL package's `get-setf-method' function no longer exists.
1600 Generalized variables are now part of core Emacs Lisp, and implemented
1601 differently to the way cl.el used to do it. It is not possible to
1602 define a compatible replacement for `get-setf-method'. See the file
1603 gv.el for internal details of the new implementation.
1605 ** The arguments of `dbus-register-signal' are no longer just strings,
1606 but keywords or keyword-string pairs. The old argument list will
1607 still be supported for Emacs 24.x.
1609 ** Miscellaneous name changes
1610 Some Lisp symbols have been renamed to correct their spelling,
1611 or to be more consistent with standard Emacs terminology.
1613 *** Renamed functions
1614 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
1615 **** inactivate-input-method -> deactivate-input-method
1616 **** quail-inactivate -> quail-deactivate
1617 **** robin-inactivate -> robin-deactivate
1618 **** viper-inactivate-input-method -> viper-deactivate-input-method
1619 **** viper-inactivate-input-method-action ->
1620 viper-deactivate-input-method-action
1621 **** ucs-input-inactivate -> ucs-input-deactivate
1624 The old hooks are still supported for backward compatibility, but they
1625 are deprecated and will be removed eventually.
1626 **** input-method-inactivate-hook -> input-method-deactivate-hook
1627 **** robin-inactivate-hook -> robin-deactivate-hook
1628 **** quail-inactivate-hook -> quail-deactivate-hook
1630 *** Renamed variables
1631 **** follow-deactive-menu -> follow-inactive-menu
1632 **** inactivate-current-input-method-function ->
1633 deactivate-current-input-method-function
1635 ** Some obsolete functions, variables, and faces have been removed:
1636 *** `last-input-char', `last-command-char', `unread-command-char'
1637 *** `facemenu-unlisted-faces'
1638 *** `rmail-decode-mime-charset'
1639 *** `iswitchb-read-buffer'
1640 *** `sc-version', `sc-submit-bug-report'
1641 *** `set-char-table-default'
1642 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
1643 *** `compile-internal'
1645 *** `mode-line-inverse-video'
1646 *** `follow-mode-off-hook'
1647 *** `cvs-commit-buffer-require-final-newline'
1648 (use `log-edit-require-final-newline' instead)
1649 *** `cvs-changelog-full-paragraphs'
1650 (use `log-edit-changelog-full-paragraphs' instead)
1651 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1652 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1653 *** `vc-master-templates' (use `vc-handled-backends' instead)
1654 *** `vc-checkout-carefully'
1657 * Lisp Changes in Emacs 24.3
1659 ** CL-style generalized variables are now in core Elisp.
1660 `setf' is autoloaded; `push' and `pop' accept generalized variables.
1661 You can define your own generalized variables using `gv-define-simple-setter',
1662 `gv-define-setter', etc.
1664 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1665 This can significantly speed up execution of non-byte-compiled code,
1666 but can also bump into previously unnoticed cyclic dependencies.
1667 These are generally harmless: they will simply cause the macro calls
1668 to be left for later expansion (as before), but will result in a
1669 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1670 You may wish to restructure your code so this does not happen.
1672 ** New sampling-based Elisp profiler.
1673 Try M-x profiler-start, do some work, and then call M-x profiler-report.
1674 When finished, use M-x profiler-stop. The sampling rate can be based on
1675 CPU time or memory allocations.
1677 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1678 The interpretation of the DECLS is determined by `defun-declarations-alist'.
1680 ** New macros `setq-local' and `defvar-local'.
1682 ** Face underlining can now use a wave.
1684 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
1685 of `read-regexp' accepts a string ending with a colon and space, and its
1686 second argument DEFAULTS can be a list of strings accessible via `M-n'
1687 in the minibuffer ahead of other hard-coded useful regexp-related values.
1688 More commands use `read-regexp' now to read their regexp arguments.
1692 *** New function `completion-table-with-quoting' to handle completion
1693 in the presence of quoting, such as file completion in shell buffers.
1695 *** New function `completion-table-subvert' to use an existing completion
1696 table, but with a different prefix.
1700 *** New error type and new function `user-error'.
1701 These do not trigger the debugger.
1703 *** New option `debugger-bury-or-kill', saying what to do with the
1704 debugger buffer when exiting debug.
1706 *** Set `debug-on-message' to enter the debugger when a certain
1707 message is displayed in the echo area. This can be useful when trying
1708 to work out which code is doing something.
1710 *** New var `inhibit-debugger', automatically set to prevent accidental
1711 recursive invocations.
1715 *** New command `fit-frame-to-buffer' adjusts the frame height to
1718 *** The command `fit-window-to-buffer' can adjust the frame height
1719 if the new option `fit-frame-to-buffer' is non-nil.
1721 *** New macro `with-temp-buffer-window', similar to
1722 `with-output-to-temp-buffer'.
1724 *** `temp-buffer-resize-mode' no longer resizes windows that have been
1727 *** New option `switch-to-buffer-preserve-window-point' to restore a
1728 window's point when switching buffers.
1730 *** New display action alist entries `window-height' and `window-width'
1731 specify the size of new windows created by `display-buffer'.
1733 *** New display action alist entry `pop-up-frame-parameters', if
1734 non-nil, specifies frame parameters to give any newly-created frame.
1736 *** New display action alist entry `inhibit-switch-frame', if non-nil,
1737 tells display action functions to avoid changing which frame is
1740 *** New display action alist entry `previous-window', if non-nil,
1741 specifies window to reuse in `display-buffer-in-previous-window'.
1743 *** New display action functions `display-buffer-below-selected',
1744 and `display-buffer-in-previous-window'.
1746 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1747 now accept a third argument to avoid choosing the selected window.
1749 *** Additional values recognized for option `window-combination-limit'.
1751 *** The following variables are obsolete, as they can be replaced by
1752 appropriate entries in the `display-buffer-alist' function introduced
1754 **** `dired-shrink-to-fit'
1755 **** `display-buffer-reuse-frames'
1756 **** `display-buffer-function'
1757 **** `special-display-buffer-names'
1758 **** `special-display-frame-alist'
1759 **** `special-display-function'
1760 **** `special-display-regexps'
1764 *** `current-time-string' no longer requires that its argument's year
1765 must be in the range 1000..9999. It now works with any year supported
1766 by the underlying C implementation.
1768 *** `current-time' now returns extended-format time stamps
1769 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1770 PSEC is typically a multiple of 1000 on current machines. Other
1771 functions that use this format, such as `file-attributes' and
1772 `format-time-string', have been changed accordingly. Old-format time
1773 stamps are still accepted.
1775 *** The format of timers in `timer-list' and `timer-idle-list' is now
1776 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1777 The PSECS slot is new, and uses picosecond resolution. It can be
1778 accessed via the new `timer--psecs' accessor.
1780 *** Last-modified time stamps in undo lists now are of the form
1781 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1785 *** Improved security when handling persistent objects:
1787 **** `eieio-persistent-read' now features optional arguments for specifying
1788 the class to load, as well as a flag stating whether subclasses are allowed;
1789 if provided, other classes will be rejected by the reader. For
1790 compatibility with existing code, if the class is omitted only a
1793 **** New specialized reader for pulling in classes and signaling errors
1794 without evaluation of suspicious code.
1796 **** All slots that contain objects must have a :type. Slots with lists
1797 of objects must use a new type predicate for a list of an object type.
1799 *** Support for `find-function' and similar utilities, through the addition
1800 of filename support to generated symbols.
1802 ** Floating point functions now always return special values like NaN,
1803 instead of signaling errors, if given invalid args; e.g., (log -1.0).
1804 Previously, they returned NaNs on some platforms but signaled errors
1805 on others. The affected functions are acos, asin, tan, exp, expt,
1806 log, log10, sqrt, and mod.
1808 ** New fringe bitmap `exclamation-mark'.
1810 ** Miscellaneous changes to special forms and macros
1812 *** `defun' and `defmacro' are now macros rather than special forms.
1814 *** `kbd' is now a function rather than a macro.
1816 ** Miscellaneous new functions
1818 *** `set-temporary-overlay-map' sets up a temporary keymap that
1819 takes precedence over most other maps for a short while (normally one key).
1821 *** `autoloadp' tests if its argument is an autoloaded object.
1823 *** `autoload-do-load' performs the autoloading operation.
1825 *** `buffer-narrowed-p' tests if the buffer is narrowed.
1827 *** `file-name-base' returns a file name sans directory and extension.
1829 *** `function-get' fetches a function property, following aliases.
1831 *** `posnp' tests if an object is a `posn'.
1833 *** `system-users' returns the user names on the system.
1835 *** `system-groups' returns the group names on the system.
1837 *** `tty-top-frame' returns the topmost frame of a text terminal.
1839 ** The following functions and variables are obsolete:
1840 *** `automount-dir-prefix' (use `directory-abbrev-alist')
1841 *** `buffer-has-markers-at'
1842 *** `macro-declaration-function' (use `macro-declarations-alist')
1843 *** `window-system-version' (provides no useful information)
1844 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
1845 *** `query-replace-interactive'
1846 *** `font-list-limit' (has had no effect since Emacs < 23)
1849 * Changes in Emacs 24.3 on Non-Free Operating Systems
1851 ** Cygwin builds can use the native MS Windows user interface.
1852 Pass `--with-w32' to configure. The default remains the X11 interface.
1854 ** Two new functions are available in Cygwin builds:
1855 `cygwin-convert-file-name-from-windows' and
1856 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
1857 code to access the Cygwin file-name mapping machinery to convert
1858 between Cygwin and Windows-native file and directory names.
1860 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
1861 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
1862 `mouse-autoselect-window'.
1864 ** On MS Windows Vista and later Emacs now supports symbolic links.
1866 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
1867 support for libxml2, even if its presence is detected.
1869 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1871 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
1872 directories to the search path. You must add them yourself if you want them.
1875 * Changes in Emacs 24.2
1877 ** This is mainly a bug-fix release.
1880 * Installation Changes in Emacs 24.1
1882 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1883 to configure. Note that other libraries used by Emacs, RSVG and GConf,
1884 also depend on Gtk+. You can disable them with --without-rsvg and
1887 ** Emacs can be compiled with GnuTLS support.
1888 This happens by default if a suitably recent version of the library is
1889 found at build time. To prevent this, use the configure option
1890 `--without-gnutls'. See below for GnuTLS features.
1892 ** Emacs can be compiled with SELinux support.
1893 This happens by default if a suitably recent version of the library is
1894 found at build time. To prevent this, use the configure option
1895 `--without-selinux'. See below for SELinux features.
1897 ** Emacs can be compiled with ImageMagick support.
1898 This happens by default if a suitably recent version of the library is
1899 found at build time. To prevent this, use the configure option
1900 `--without-imagemagick'. See below for ImageMagick features.
1901 This feature is not available for the Nextstep or MS ports.
1903 ** Emacs can be compiled with libxml2 support.
1904 This happens by default if a suitably recent version of the library is
1905 found at build time. To prevent this, use the configure option
1906 `--without-xml2'. See below for libxml2 features.
1908 ** By default, the installed Info and man pages are compressed.
1909 You can disable this by configuring --without-compress-info.
1911 ** New configure option --with-wide-int.
1912 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
1913 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1916 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
1917 These provide no new functionality, they just remove the need to edit
1918 lib-src/Makefile by hand in order to use the associated features.
1920 ** New configure option --enable-use-lisp-union-type.
1921 This is only useful for Emacs developers to debug certain types of bugs.
1922 This is not a new feature; only the configure flag is new.
1924 ** The standalone programs digest-doc and sorted-doc are removed.
1925 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1927 ** The standalone program `fakemail' is removed.
1928 If you need it, feedmail.el provides a superset of the functionality.
1931 * Startup Changes in Emacs 24.1
1933 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
1934 command line arguments, and the EMACS_UNIBYTE environment variable, no
1935 longer have any effect. (They were declared obsolete in Emacs 23.)
1937 ** New command line option `--no-site-lisp' removes site-lisp directories
1938 from load-path. -Q now implies this. This option does not affect the
1939 EMACSLOADPATH environment variable (and hence has no effect for
1943 * Changes in Emacs 24.1
1947 *** Many packages now use the `completion-at-point' command,
1948 rather than implementing separate completion commands.
1950 *** `completion-at-point' now handles tags and semantic completion.
1952 *** Completion in a non-minibuffer now tries to detect the end of completion
1953 and pops down the *Completions* buffer accordingly.
1955 *** New option `completion-cycle-threshold' allows completion cycling.
1957 *** New option `completion-category-overrides' for overriding the
1958 default completion style in certain circumstances.
1960 *** New completion style `substring'.
1962 *** Completion of buffer names uses `substring' completion by default.
1964 *** The option `widget-complete-field' has been removed.
1968 *** The first time you try sending mail, Emacs asks for a mail method.
1969 This is implemented by a new default for `send-mail-function', which
1970 is `sendmail-query-once'. This offers to use the smtpmail package, or
1971 to use the old defaults relying on external mail facilities
1972 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1973 `mailclient-send-it' on Windows).
1975 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
1976 transfers the report to your desktop's preferred mail client, if there
1977 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
1980 *** See Changes in Specialized Modes and Packages for SMTPmail changes
1981 and Mail mode changes
1983 ** Emacs server and client changes
1985 *** New option `server-port' specifies the port for TCP Emacs servers.
1987 *** New emacsclient argument -q/--quiet suppresses some status messages.
1989 *** New emacsclient argument --frame-parameters specifies the frame
1990 parameters of any newly-created graphical frame.
1992 *** If emacsclient shuts down due to Emacs signaling an error,
1993 its exit status is 1.
1995 *** New emacsclient argument --parent-id ID.
1996 This opens a client frame in parent X window ID, via XEmbed, similar
1997 to the --parent-id argument to Emacs.
1999 ** Internationalization changes
2001 *** Emacs now supports display and editing of bidirectional text.
2002 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2003 displayed in the correct visual order as expected by users of those
2004 scripts. The display reordering is a "full bidirectionality" class
2005 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2006 with no RTL text should look exactly the same as before.
2008 **** New buffer-local variable `bidi-display-reordering'.
2009 To disable display reordering in a buffer, change this to nil.
2011 **** New buffer-local variable `bidi-paragraph-direction'.
2012 If nil (the default), Emacs determines the base direction of each
2013 paragraph from its text, as specified by the UBA. Setting the value
2014 to `right-to-left' or `left-to-right' forces a base direction on each
2017 Paragraphs with right-to-left base direction are displayed starting at
2018 the right window edge.
2020 *** Enhanced support for characters with no glyphs in available fonts,
2021 or, on text terminals, characters that cannot be encoded by the
2022 terminal coding system. The new option `glyphless-char-display-control'
2023 specifies how to display them: as a hexadecimal code in a box, a thin
2024 1-pixel space, an empty box, etc.
2026 *** New input methods for Farsi and Bulgarian
2027 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2029 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2030 (U+2010 and U+2011).
2032 *** New Hebrew translation of the Emacs Tutorial.
2033 Type `C-u C-h t' to choose it in case your language setup doesn't
2034 automatically select it.
2036 ** An Emacs Lisp package manager is now included.
2037 This is a convenient way to download and install additional packages,
2038 from a package repository at http://elpa.gnu.org.
2040 *** M-x list-packages shows a list of packages, which can be
2041 selected for installation.
2043 *** New command `describe-package', bound to `C-h P'.
2045 *** By default, all installed packages are loaded automatically when
2046 Emacs starts up. To disable this, set `package-enable-at-startup' to
2047 nil. To specify the packages to load, customize `package-load-list'.
2049 ** Custom theme changes
2051 *** New command `M-x customize-themes', which provides a convenient
2052 interface for enabling and disabling Custom themes.
2054 *** New option `custom-theme-load-path' is the load path for themes.
2055 Emacs no longer looks for Custom themes in `load-path'. The default
2056 value of `custom-theme-load-path' says to look for themes in
2057 `custom-theme-directory', followed by a subdirectory of
2058 `data-directory' named "themes/", which contains a small selection of
2059 built-in Custom themes.
2061 *** New option `custom-safe-themes' records known-safe theme files.
2062 If a theme is not in this list, Emacs queries before loading it, and
2063 offers to save the theme to `custom-safe-themes' automatically. By
2064 default, all themes included in Emacs are treated as safe.
2066 ** Improved GTK integration
2068 *** GTK scroll-bars are now placed on the right by default.
2069 The function `set-scroll-bar-mode' can change this.
2071 *** GTK tool bars can have just text, just images or images and text.
2072 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2073 the default is taken from desktop settings.
2075 *** GTK tool bars can be placed on any edge of the frame.
2076 The frame-parameter tool-bar-position controls this. It takes the
2077 values top, left, right or bottom. The Options => Show/Hide menu has
2080 *** The default colors for selected text (the `region' face) are taken
2081 from the GTK theme when Emacs is built with GTK.
2083 *** Emacs uses GTK tooltips by default if built with GTK.
2084 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2086 ** Graphical interface changes
2088 *** On graphical displays, the mode-line no longer ends in dashes.
2089 Also, the first dash (which does not indicate anything) is just
2090 displayed as a space.
2092 *** `menu-bar-select-buffer-function' lets you choose another operation
2093 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2095 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2096 built with Xft. These fonts can be set via X resources, for example:
2097 Emacs.pane.menubar.font: Courier-12
2101 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2102 or if it receives a SIGINT signal in batch mode.
2104 *** `kill-emacs-hook' is now also run in batch mode.
2105 Third-party code which adds to `kill-emacs-hook' should check if they
2106 do the right thing in batch mode.
2108 ** Scrolling changes
2110 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2111 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2112 of buffer at first key-press (instead they move to top/bottom of buffer)
2113 when `scroll-error-top-bottom' is non-nil.
2115 *** New option `scroll-error-top-bottom' (see above).
2117 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2118 scroll a line instead of full screen.
2120 *** New property `scroll-command' should be set on a command's symbol to
2121 define it as a scroll command affected by `scroll-preserve-screen-position'.
2123 *** If you customize `scroll-conservatively' to a value greater than 100,
2124 Emacs will never recenter point in the window when it scrolls due to
2125 cursor motion commands or commands that move point (e.f., `M-g M-g').
2126 Previously, you needed to use `most-positive-fixnum' as the value of
2127 `scroll-conservatively' to achieve the same effect.
2129 *** "Aggressive" scrolling now honors the scroll margins.
2130 If you customize `scroll-up-aggressively' or
2131 `scroll-down-aggressively' and move point off the window, Emacs now
2132 scrolls the window so as to avoid positioning point inside the scroll
2135 ** Basic SELinux support has been added.
2136 This requires Emacs to be linked with libselinux at build time.
2138 *** Emacs preserves the SELinux file context when backing up.
2139 Also, the function `copy-file' has an extra optional argument for
2140 preserving SELinux context, and the return value of `backup-buffer'
2141 now includes the SELinux context.
2143 *** New functions `file-selinux-context' and `set-file-selinux-context'
2144 get and set the SELinux context of a file.
2148 *** `delete-by-moving-to-trash' now only affects commands that specify
2149 trashing. This avoids inadvertently trashing temporary files.
2151 *** Calling `delete-file' or `delete-directory' with a prefix argument
2152 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2154 ** File- and directory-local variable changes
2156 *** You can stop directory local vars from applying to subdirectories.
2157 Add an element (subdirs . nil) to the alist portion of any variables
2158 settings to indicate that the section should not apply to
2161 *** Directory local variables can apply to some file-less buffers.
2162 Affected modes include dired, vc-dir, and log-edit. For example,
2163 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2164 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2165 `hack-dir-local-variables-non-file-buffer' to support this.
2167 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2168 Instead, use "eval: (minor-mode 1)".
2170 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2171 to `inhibit-local-variables-regexps'. As the name suggests, it now
2172 applies to ALL file local variables, not just -*- lines. The
2173 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2178 *** The `quit-window' command now restores the last buffer displayed
2179 in the quitted window.
2181 *** Resizing an Emacs frame now preserves proportional window sizes,
2182 modulo restrictions like window minimum sizes and fixed-size windows.
2184 *** The behavior of `display-buffer' is now customizable in detail.
2186 **** New option `display-buffer-base-action' specifies a list of
2187 user-determined display "actions" (functions and optional arguments
2188 for choosing the displaying window).
2190 This takes precedence over the default display action, which is
2191 specified by `display-buffer-fallback-action'.
2193 **** New option `display-buffer-alist' maps buffer name regexps to
2194 display actions, taking precedence over `display-buffer-base-action'.
2196 *** New option `window-combination-limit'.
2197 The new option `window-combination-limit' allows to return the space
2198 obtained for resizing or creating a window more reliably to the window
2199 from which such space was obtained.
2201 *** New option `window-combination-resize'.
2202 The new option `window-combination-resize' allows to split a window that
2203 otherwise cannot be split because it's too small by stealing space from
2204 other windows in the same combination. Subsequent resizing or deletion
2205 of the window will resize all windows in the same combination as well.
2207 *** New option `frame-auto-hide-function' lets you choose between
2208 iconifying or deleting a frame when burying a buffer in a dedicated
2209 frame, or quitting a window showing a buffer in a frame of its own.
2211 *** New commands `maximize-window' and `minimize-window'.
2212 These maximize and minimize the size of a window within its frame.
2214 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2215 These functions allow to navigate through the live buffers that have
2216 been shown in a specific window.
2218 ** Minibuffer changes
2220 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
2221 This is handy for minibuffer-only frames, and is also used for the feature
2222 where mouse-1 pops up *Messages*"', which can now easily be changed.
2224 *** Minibuffers set `truncate-lines' to nil.
2225 If you want to change the value to something else, you could use
2226 for example `minibuffer-setup-hook'.
2228 ** `auto-mode-case-fold' is now enabled by default.
2230 ** `backup-by-copying-when-mismatch' now defaults to t.
2232 ** New basic faces `error', `warning', `success'.
2233 These are used to highlight text indicating failure, caution or
2234 successful operation.
2236 ** New option `list-colors-sort' defines the color sort order
2237 for `list-colors-display'.
2239 ** The variable `focus-follows-mouse' now always defaults to nil.
2242 * Editing Changes in Emacs 24.1
2246 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2247 `isearch-yank-line'.
2249 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2250 `isearch-yank-kill'.
2252 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2254 ** New commands `count-words-region' and `count-words'.
2256 *** M-= is bound to `count-words-region', not `count-lines-region'.
2257 The `count-words-region' command, when called interactively, reports
2258 the number of lines, words, and characters in the region. It is a
2259 superset of the old `count-lines-region', which is now an obsolete
2262 ** The command `just-one-space' (M-SPC), if given a negative argument,
2263 also deletes newlines around point.
2267 *** New option `delete-active-region'.
2268 If non-nil, [delete] and DEL delete the region if it is active and no
2269 prefix argument is given. If set to `kill', those commands kill
2272 *** New command `delete-forward-char', bound to [delete].
2273 This is meant for interactive use, and obeys `delete-active-region'.
2274 The command `delete-char' does not obey `delete-active-region'.
2276 *** `delete-backward-char' is now a Lisp function.
2277 Apart from obeying `delete-active-region', its behavior is unchanged.
2278 However, the byte compiler now warns if it is called from Lisp; Lisp
2279 callers should use delete-char with a negative argument instead.
2281 *** The option `mouse-region-delete-keys' has been deleted.
2283 ** Selection changes.
2285 The default handling of clipboard and primary selections has been
2286 changed to conform with modern X applications. In short, most
2287 commands for killing and yanking text now use the clipboard, while
2288 mouse commands use the primary selection.
2290 In the following, we provide a list of these changes, followed by a
2291 list of steps to get the old behavior back if you prefer that.
2293 *** `select-active-regions' now defaults to t.
2294 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
2295 the kill ring. The selected text is put in the primary selection, if
2296 the system possesses a separate primary selection facility (e.g. X).
2298 **** `select-active-regions' also accepts a new value, `only'.
2299 This means to only set the primary selection for temporarily active
2300 regions (usually made by mouse-dragging or shift-selection);
2301 "ordinary" active regions, such as those made with C-SPC followed by
2302 point motion, do not alter the primary selection.
2304 **** `mouse-drag-copy-region' now defaults to nil.
2306 *** mouse-2 is now bound to `mouse-yank-primary'.
2307 This pastes from the primary selection, ignoring the kill-ring.
2308 Previously, mouse-2 was bound to `mouse-yank-at-click'.
2310 *** `x-select-enable-clipboard' now defaults to t on all platforms.
2312 *** `x-select-enable-primary' now defaults to nil.
2313 Thus, commands that kill text or copy it to the kill-ring (such as
2314 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2316 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
2317 exactly equivalent to M-w, C-w, and C-y respectively.
2319 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
2320 non-nil by default, as Windows does not support the primary selection
2321 between applications.
2323 *** To return to the previous behavior, do the following:
2325 **** Change `select-active-regions' to nil.
2326 **** Change `mouse-drag-copy-region' to t.
2327 **** Change `x-select-enable-primary' to t (on X only).
2328 **** Change `x-select-enable-clipboard' to nil.
2329 **** Bind `mouse-yank-at-click' to mouse-2.
2331 *** Support for X cut buffers has been removed.
2333 *** X clipboard managers are now supported.
2334 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
2336 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2337 in the current rectangle. With a prefix argument, this prompts for a
2338 number to count from and for a format string.
2340 ** `redisplay-dont-pause' now defaults to t.
2341 This makes Emacs feel more responsive to editing commands that arrive
2342 at high rate, e.g. if you lean on some key, because stopping redisplay
2343 in the middle (when this variable is nil) forces more expensive
2344 updates later on, and Emacs appears to be unable to keep up.
2346 ** The behavior of <TAB> for active regions in Text mode has changed.
2347 In Text and related modes, typing <TAB> (`indent-for-tab-command')
2348 when the region is active causes Emacs to indent all the lines in the
2349 region, aligning them with the line previous to the first line in the
2350 region (or with the left margin if there is no previous line).
2352 ** When `occur' is called with a prefix argument, matching strings are
2353 collected into the `*Occur*' buffer without line numbers. If there
2354 are parenthesized subexpressions in the specified regexp, `occur'
2355 reads replacement text that may contain \\& and \\N whose convention
2356 follows `replace-match'.
2359 * Changes in Specialized Modes and Packages in Emacs 24.1
2361 ** Archive Mode has basic support for browsing and updating 7z archives.
2365 *** BibTeX mode now supports biblatex.
2366 Use the variable `bibtex-dialect' to select different BibTeX dialects.
2367 `bibtex-entry-field-alist' is now an obsolete alias for
2368 `bibtex-BibTeX-entry-alist'.
2370 *** New command `bibtex-search-entries', bound to C-c C-a.
2372 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
2374 *** New variable `bibtex-search-entry-globally'.
2378 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
2380 *** The default browser used by the package is now the "xdg-open" program,
2381 on platforms that support it. This calls your desktop's preferred browser.
2385 *** Support for musical notes.
2387 *** Support for logarithmic units.
2389 *** No longer uses the tex prefix for TeX specific unit names when
2390 using TeX or LaTeX mode.
2392 *** New option to highlight selections using faces.
2394 *** `calc-histogram' has the option of using a vector to determine the bins.
2396 *** New "O" option prefix.
2398 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2400 ** Calendar, Diary, and Appt
2402 *** Diary entries can contain non-printing "comments".
2403 See the variable `diary-comment-start'.
2405 *** Appointments can specify their individual warning times.
2406 See the variable `appt-warning-time-regexp'.
2408 *** The function specified by `appt-disp-window-function' may be passed
2409 lists of arguments if multiple appointments are due at similar times.
2410 If you are using a custom function for this, you should update it.
2412 *** New function `diary-hebrew-birthday'.
2414 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2415 may no longer be nil, but must all be strings.
2417 *** The obsolete (since Emacs 22.1) method of enabling the appt
2418 package by adding `appt-make-list' to `diary-hook' has been removed.
2419 Use `appt-activate' instead.
2421 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
2422 appt-issue-message (use the function appt-activate)
2423 appt-visible/appt-msg-window (use the variable appt-display-format)
2425 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2426 view-diary-entries, list-diary-entries, show-all-diary-entries
2430 *** New feature to "guess" the style in an existing buffer.
2431 The main entry point is M-x c-guess.
2433 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2435 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
2436 Thus C-M-a will, by default, go to the beginning of the immediate function,
2439 *** "Macros with semicolons" can be registered for correct indentation.
2440 Where such a macro ends a line (no semicolon) the next statement is no longer
2441 parsed as a statement continuation.
2443 ** Comint and modes derived from it use the standard completion code.
2447 *** Compilation mode can be used without Font Lock mode.
2448 `compilation-parse-errors-function' is now obsolete.
2450 *** New variable `compilation-filter-start', which is bound while
2451 `compilation-filter-hook' runs. It records the start position of the
2452 text inserted by `compilation-filter'.
2454 *** `compilation-error-screen-columns' and `compilation-first-column'
2455 are obeyed in the editing buffer. So programming language modes can
2456 set them, whereas previously only the value in the *Compilation*
2461 *** Customize buffers now contain a search field.
2462 The search is performed using `customize-apropos'.
2463 To turn off the search field, set `custom-search-field' to nil.
2465 *** Options in customize group buffers start out hidden if not customized.
2466 Use the arrow to the left of the option name to toggle visibility.
2468 *** custom-buffer-sort-alphabetically now defaults to t.
2470 *** The color widget now has a "Choose" button, which allows you to
2471 choose a color via `list-colors-display'.
2475 *** It is now possible to access buses other than the default system
2478 *** The `dbus-register-method' and `dbus-register-property' functions
2479 optionally do not register names.
2481 *** The new function `dbus-register-service' registers a known service
2482 name on a D-Bus without also registering a property or a method.
2486 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2487 if called with a prefix argument, read a file name from the minibuffer
2488 instead of using the current buffer.
2490 *** The "dired local variables" feature of Dired-x is obsolete.
2491 The standard directory local variables feature replaces it.
2495 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2496 controlling attempts to autojoin a channel.
2498 *** New variable `erc-coding-system-precedence': If we use `undecided'
2499 as the server coding system, this variable will then be consulted.
2500 The default is to decode strings that can be decoded as utf-8 as
2501 utf-8, and do the normal `undecided' decoding for the rest.
2505 *** The default value of `eshell-directory-name' has changed
2506 to be an "eshell" directory in `user-emacs-directory'.
2507 The old "~/.eshell/" directory is still used if it exists, though.
2511 *** The M-x gdb command now uses the GDB Machine Interface protocol.
2512 It now supports multithread non-stop debugging and simultaneous
2513 debugging of several threads.
2517 *** RET (`image-toggle-animation') toggles animation, if applicable.
2518 Animation plays once, unless the option `image-animate-loop' is non-nil.
2522 *** New command M-x info-display-manual displays a named Info manual.
2523 If that manual is already visited in some Info buffer, it displays
2524 that buffer. (This is handy if you have many manuals in many *info*
2525 buffers, and don't remember the name of the buffer visiting the manual
2526 you want to consult.) Otherwise, it loads and displays the manual.
2528 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2529 This is for compatibility with the stand-alone Info reader program,
2530 and also because `Info-edit' is a rarely used command that is disabled
2533 ** Mail mode changes (not Message mode)
2535 *** New command M-x mail-add-attachment for adding MIME attachments
2537 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2538 (Its name is misleading, since it has nothing to do with MIME
2539 attachments.) The old name is now an obsolete alias to the new name.
2541 ** MH-E has been updated to MH-E version 8.3.1.
2542 See MH-E-NEWS for details.
2544 ** Modula-2 mode provides auto-indentation.
2546 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
2548 ** nXML mode no longer binds C-RET to `nxml-complete'.
2549 Completion is now performed via `completion-at-point', bound to C-M-i
2550 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2551 default), this performs tag completion.
2553 ** Org mode has been updated to version 7.8.09.
2554 See ORG-NEWS for details.
2556 ** Prolog mode has been completely revamped, with lots of additional
2557 functionality such as more intelligent indentation, electricity,
2558 support for more variants, including Mercury, and a lot more.
2562 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
2563 in the Rmail incoming message.
2565 *** The variable `rmail-message-filter' no longer has any effect.
2566 This change was made in Emacs 23.1 but was not advertised at the time.
2567 Try using `rmail-show-message-hook' instead.
2571 *** M-x shell prompts for the shell path name if the default directory
2572 is a remote file name and neither the environment variable $ESHELL nor
2573 the variable `explicit-shell-file-name' is set.
2575 *** TAB is now bound to the standard `completion-at-point' command,
2576 which now implements the pcomplete rules for shell command completion.
2580 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
2581 if the mail server supports them. This uses either built-in GnuTLS
2582 support, or the starttls.el library. Customize `smtpmail-stream-type'
2585 *** The variable `smtpmail-auth-credentials' has been removed.
2586 By default, the information is now stored in the file ~/.authinfo.
2587 This was the default value of smtpmail-auth-credentials. If you had
2588 customized smtpmail-auth-credentials to a list of user names and
2589 passwords, those settings are not used. During your first connection
2590 to the smtp server, Emacs will prompt for the user name and password,
2591 and offer to save them to ~/.authinfo. Or you can manually copy the
2592 credentials to ~/.authinfo. For example, if you had
2594 (setq smtpmail-auth-credentials
2595 '(("mail.example.org" 25 "jim" "s!cret")))
2597 then the equivalent line in ~/.authinfo would be
2599 machine mail.example.org port 25 login jim password s!cret
2601 See the auth-source manual for more information, e.g. on encrypting
2602 the credentials file.
2604 *** The variable `smtpmail-starttls-credentials' has been removed.
2605 If you had that set, you need to put
2607 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2609 in your ~/.authinfo file instead.
2611 *** SMTPmail defaults to using the address in the From: header as the
2612 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2613 to the address you wish to use instead.
2617 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2618 and `sql-oracle-scan-on'.
2620 *** New options controlling prompting for login parameters.
2621 Each supported product has a custom variable `sql-*-login-params',
2622 which is a list of the parameters to be prompted for before a
2623 connection is established.
2625 *** The command `sql-product-interactive' now takes a prefix argument,
2626 which causes it to prompt for an SQL product.
2628 *** Product-specific SQL interactive commands now take prefix arguments.
2629 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2630 given a prefix argument, prompt for a name for the SQL interactive
2631 buffer. This reduces the need for calling `sql-rename-buffer'.
2633 *** SQL interactive modes suppress command continuation prompts, and
2634 replace tabs with spaces. The first change impacts multiple line SQL
2635 statements entered with C-j between each line, statements yanked into
2636 the buffer and statements sent with `sql-send-*' functions. The
2637 second prevents the MySQL and Postgres interpreters from listing
2638 object name completions when sent text via `sql-send-*' functions.
2640 *** New command `sql-connect' starts a predefined SQLi session,
2641 using the login parameters from `sql-connection-alist'.
2643 *** New "Save Connection" menu item in SQLi buffers.
2644 This gathers the login params specified for the SQLi session, if it
2645 was not started by a connection, and saves them as a new connection.
2647 *** New commands for listing database objects and details:
2648 sql-list-all and sql-list-table.
2650 *** An API for manipulating SQL product definitions has been added.
2654 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
2658 *** New inline access method "ksu" (kerberized su).
2660 *** The following access methods are discontinued: "ssh1_old",
2661 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
2663 *** The user option `remote-file-name-inhibit-cache' controls whether
2664 remote file attributes are cached for better performance.
2666 *** The option `ange-ftp-binary-file-name-regexp' has changed its
2667 default value to "".
2669 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
2670 for remote machines which support SELinux.
2672 ** New function `url-queue-retrieve', which behaves like url-retrieve,
2673 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2674 the degree of parallelism.
2676 ** VC and related modes
2678 *** Support for pulling on distributed version control systems.
2679 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2680 supported (currently with Bzr, Git, and Mercurial), to update the
2681 current branch and working tree. A prefix argument means to prompt
2682 the user for specifics, e.g. a pull location.
2684 *** `vc-update' is now an alias for `vc-pull'.
2686 *** Support for merging on distributed version control systems.
2687 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2688 is supported (currently with Bzr, Git, and Mercurial), to merge
2689 changes from another branch into the current one. It prompts for
2690 specifics, e.g. a merge source.
2692 *** New option `vc-revert-show-diff' controls whether `vc-revert'
2693 shows a diff while querying the user. It defaults to t.
2695 *** Log entries in some Log View buffers can be toggled to display a
2696 longer description by typing RET (log-view-toggle-entry-display).
2697 This is currently supported for Bzr, Git, and Mercurial (to support
2698 another backend, define a `log-view-expanded-log-entry-function').
2699 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
2700 use this to display the full log entry for the revision at point.
2702 *** New command `vc-ediff' allows visual comparison of two revisions
2703 of a file similar to `vc-diff', but using ediff backend.
2705 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
2706 this was not advertised at the time.
2708 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2709 Since Emacs 23, it has done the same thing as `toggle-read-only', but
2710 this was not advertised at the time.
2716 *** erc-hecomplete.el (use erc-pcomplete.el instead)
2718 *** partial-completion-mode (complete.el) is obsolete.
2719 You can get a comparable behavior with:
2720 (setq completion-styles '(partial-completion initials))
2721 (setq completion-pcm-complete-word-inserts-delimiters t)
2723 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2725 *** pgg is obsolete (use EasyPG instead).
2727 *** sregex.el is obsolete, since rx.el is a strict superset.
2729 *** s-region.el and pc-select.el are obsolete.
2730 They are superseded by shift-select-mode, enabled by default since 23.1.
2732 *** vc-mcvs.el is obsolete (for lack of a maintainer).
2736 *** The Landmark game is now invoked with `landmark', not `lm'.
2737 Its functions and variables have been similarly renamed.
2739 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
2740 (This interfered with cua-mode.)
2742 *** f90.el has some support for Fortran 2008 syntax.
2744 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
2746 *** New command `nato-region' converts text to NATO phonetic alphabet.
2749 * New Modes and Packages in Emacs 24.1
2751 ** Occur Edit mode applies edits made in *Occur* buffers to the
2752 original buffers. It is bound to "e" in Occur mode.
2754 ** New global minor mode electric-pair-mode.
2755 When enabled, typing an open parenthesis automatically inserts the
2756 matching closing one.
2758 ** New global minor mode electric-indent-mode.
2759 When enabled, typing certain characters triggers reindentation.
2760 Major modes wishing to use this can set electric-indent-chars or
2761 electric-indent-functions.
2763 ** New global minor mode electric-layout-mode.
2764 When enabled, typing certain characters automatically inserts newlines.
2765 Major modes wishing to use this can set electric-layout-rules.
2767 ** tabulated-list.el provides a generic major mode for tabulated data,
2768 from which other modes can be derived.
2770 ** pcase.el provides the ML-style pattern matching macro `pcase'.
2772 ** secrets.el is an implementation of the Secret Service API, an
2773 interface to password managers like GNOME Keyring or KDE Wallet. The
2774 Secret Service API requires D-Bus for communication. The command
2775 `secrets-show-secrets' offers a buffer with a visualization of the
2778 ** notifications.el provides an implementation of the Desktop
2779 Notifications API. It requires D-Bus for communication.
2781 ** soap-client.el supports access to SOAP web services from Emacs.
2782 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2784 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
2786 ** New emacs-lock.el package.
2787 The previous version has been moved to obsolete/old-emacs-lock.el.
2788 Now, there is a proper minor mode `emacs-lock-mode'. Protection
2789 against exiting Emacs and killing the buffer can be set separately.
2790 The mechanism for automatically turning off protection for buffers
2791 with dead inferior processes has been generalized.
2794 * Incompatible Lisp Changes in Emacs 24.1
2796 ** Passing a nil argument to a minor mode function call now ENABLES
2797 the minor mode unconditionally. This is so that you can write e.g.
2799 (add-hook 'text-mode-hook 'foo-mode)
2801 to enable foo-mode in Text mode buffers, removing the need for
2802 `turn-on-foo-mode' style functions. This affects all mode commands
2803 defined by `define-minor-mode'. If called interactively, the mode
2804 command still toggles the minor mode.
2806 ** The return value of `backup-buffer' has changed.
2807 It is now a list of three elements, where the second element is a list
2808 describing the original file's SELinux context. If Emacs or the
2809 system lacks SELinux support, the context list is (nil nil nil nil).
2810 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
2812 ** `char-direction-table' and the `char-direction' function were deleted.
2813 They were buggy and inferior to the new support of bidirectional
2814 editing introduced in Emacs 24. If you need the bidirectional
2815 properties of a character, use `get-char-code-property' with the last
2816 argument `bidi-class'.
2818 ** `copy-directory' now copies the source directory as a subdirectory
2819 of the target directory, if the latter is an existing directory. The
2820 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2821 the contents directly into a pre-existing target directory.
2823 ** For mouse click input events in the text area, the Y pixel
2824 coordinate in the POSITION list now counts from the top of the text
2825 area, excluding any header line. Previously, it counted from the top
2828 ** Support for "old-style" backquotes, obsolete for 10+ years, has
2829 been further reduced. Now a backquote not followed by a space is
2830 always treated as a "new-style" backquote. Please remove all
2831 "old-style" backquotes from your code. If your code uses backquotes
2832 as documented in the Elisp manual, and compiles without warning, then
2833 you have nothing to do in this regard. Code not following the
2834 appropriate conventions may fail to compile.
2836 The most common cause of trouble seems to be an old-style backquote
2837 followed by a newline. Another cause of trouble is vector notation
2838 for key sequence notation: instead of [(control ,)] and [(control ')],
2839 you should write [(control ?,)] and [(control ?')], which will work in
2842 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2843 was not advertised at the time. The function `custom-initialize-delay'
2844 replaced all known uses.
2846 ** `view-buffer' now treats special mode-class in the same way that
2847 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2848 major mode is special).
2850 ** Menu and tool bar changes
2852 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
2853 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2854 With these alist entries omitted, `make-frame' checks the value of the
2855 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2856 a menu-bar or tool-bar, respectively. If the alist entries are added,
2857 they override the value of `menu-bar-mode'/`tool-bar-mode'.
2859 *** The menu bar bindings's caches are not used any more.
2860 Use (where-is-internal <def> nil t) instead.
2862 ** Regions created by mouse dragging are now normal active regions,
2863 similar to those created by shift-selection (see Selection changes
2864 above). In previous Emacs versions, these regions were delineated by
2865 `mouse-drag-overlay'; that variable has been removed.
2867 ** The fourth argument of `filter-buffer-substring' has been removed.
2868 If you want to remove text properties from the final result, simply
2869 pass the result through substring-no-properties.
2871 ** cl.el no longer provides `cl-19'.
2873 ** The following obsolete functions and aliases have been removed
2874 (the appropriate new function is given in parentheses; "not needed"
2875 means you can just remove all calls to the function in question):
2877 *** `comint-kill-output' (`comint-delete-output')
2878 *** `decompose-composite-char' (`char-to-string')
2879 *** `outline-visible' (`outline-invisible-p')
2880 *** `internal-find-face' (`facep')
2881 *** `internal-get-face' (`facep and check-face')
2882 *** `frame-update-faces' (not needed)
2883 *** `frame-update-face-colors' (`frame-set-background-mode')
2884 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2885 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
2886 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2887 *** `x-make-font-bold-italic' (`make-face-bold-italic')
2888 *** `x-make-font-unbold' (`make-face-unbold')
2889 *** `x-make-font-unitalic' (`make-face-unitalic')
2890 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2891 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2892 *** `iswitchb-default-keybindings' (`iswitchb-mode')
2893 *** `char-bytes' (== 1)
2894 *** `isearch-return-char' (`isearch-printing-char')
2895 *** `make-local-hook' (not needed)
2896 *** `set-screen-height' (`set-frame-height')
2897 *** `set-screen-width' (`set-frame-width')
2899 ** The following obsolete variables and varaliases have been removed
2900 (the appropriate new variable is given in parentheses):
2902 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2903 *** `vc-header-alist' (`vc-BACKEND-header')
2904 *** `directory-sep-char' (== ?/)
2905 *** `font-lock-defaults-alist' (`font-lock-defaults')
2906 *** `e' (`float-e').
2908 ** The following obsolete files were removed:
2909 sc.el, x-menu.el, rnews.el, rnewspost.el
2911 ** The format of the finder-inf.el file has changed, since the Finder
2912 mechanism is now based on the package system. The variable
2913 `finder-package-info' is replaced by `package--builtins' and
2914 `finder-keywords-hash'.
2916 ** When generating autoloads, `update-directory-autoloads' no longer
2917 assumes every inspected file is in your `load-path'. It instead
2918 generates relative names according to the current `load-path'.
2921 * Lisp Changes in Emacs 24.1
2923 ** Code can now use lexical scoping by default instead of dynamic scoping.
2924 The `lexical-binding' variable enables lexical scoping for local
2925 variables. It is typically set via a file-local variable in the first
2926 line of the file, in which case it applies to all the code in that
2929 *** `eval' takes a new optional argument `lexical' to choose the new lexical
2930 binding instead of the old dynamic binding mode.
2932 *** Lexically scoped interpreted functions are represented with a new form
2933 of function value which looks like (closure ENV ARGS &rest BODY).
2935 *** New macro `letrec' to define recursive local functions.
2937 *** `defvar' and `defconst' now mark the variable as special (dynamic).
2938 So do `defcustom' and other forms that call `defvar' as a subroutine.
2940 *** New function `special-variable-p' to check whether a variable is
2941 declared as dynamically bound.
2943 *** The form ((lambda ...) ...) is deprecated.
2945 ** An Emacs Lisp testing tool is now included.
2946 Emacs Lisp developers can use this tool to write automated tests for
2947 their code. See the ERT info manual for details.
2949 ** Changes for bidirectional display and editing
2951 *** New function `current-bidi-paragraph-direction'.
2952 This returns the base direction of the paragraph at point.
2954 *** New function `bidi-string-mark-left-to-right'.
2955 Given a string containing characters from right-to-left scripts, this
2956 function returns another string which can be safely inserted into a
2957 buffer, such that any following text will be always displayed to the
2958 right of that string. (This works by appending an invisible Unicode
2959 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
2961 This is useful when the buffer has overall left-to-right paragraph
2962 direction and you need to insert a string whose contents are not known
2963 in advance, without disrupting the layout of the line.
2967 *** Window tree functions are accessible in Elisp.
2968 Functions are provided to return the parent, siblings or child windows
2969 of any window including internal windows (windows not associated with a
2970 buffer) in the window tree.
2972 **** New function `window-valid-p' gives non-nil for live and internal
2975 **** Window manipulation can deal with internal windows.
2976 Many window handling functions like `split-window', `delete-window', or
2977 `delete-other-windows' as well as the window resizing functions can now
2978 act on any window including internal ones.
2980 *** window-total-height/-width vs window-body-height/-width.
2981 The function `window-height' has been renamed to `window-total-height'
2982 and `window-width' has been renamed to `window-body-width'. The old
2983 names are provided as aliases. Two new functions `window-total-width'
2984 and `window-body-height' are provided.
2986 *** Window parameters specific to window handling functions.
2987 For each window you can specify a parameter to override the default
2988 behavior of a number of functions like `split-window', `delete-window'
2989 and `delete-other-windows'. The variable `ignore-window-parameters'
2990 allows to ignore processing such parameters.
2992 *** New semantics of third argument of `split-window'.
2993 The third argument of `split-window' has been renamed to SIDE and can be
2994 set to any of the values 'below, 'right, 'above, or 'left to make the
2995 new window appear on the corresponding side of the window that shall be
2996 split. Any other value of SIDE will cause `split-window' to split the
2997 window into two side-by-side windows as before.
2999 *** Window resizing functions.
3000 A new standard function for resizing windows called `window-resize' has
3001 been introduced. This and all other functions for resizing windows no
3002 longer delete any windows when they become too small.
3004 *** Deleting the selected window now selects the most recently selected
3005 live window on that frame instead.
3007 *** `adjust-window-trailing-edge' adjustments.
3008 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3009 is able to resize other windows if a window adjacent to the trailing
3010 edge cannot be shrunk any more. This makes its behavior more similar to
3011 that of Emacs 21 without compromising, however, its inability to delete
3012 windows which was introduced in Emacs 22.
3014 *** Window-local buffer lists.
3015 Windows now have local buffer lists. This means that removing a buffer
3016 from display in a window will preferably show the buffer previously
3017 shown in that window with its previous window-start and window-point
3018 positions. This also means that the same buffer may be automatically
3019 shown twice even if it already appears in another window.
3021 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3022 which if non-nil requires the buffer to be displayed in the currently
3023 selected window, signaling an error otherwise. If nil, another window
3024 can be used, e.g. if the selected one is strongly dedicated.
3026 *** `split-window-vertically' and `split-window-horizontally' renamed
3027 to `split-window-below' and `split-window-right' respectively.
3028 The old names are kept as aliases.
3032 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3033 named ACTION, and takes a display action of the same form as
3034 `display-buffer-base-action' (see Changes, above). A non-nil,
3035 non-list value is treated specially, as the old meaning.
3037 **** New variable `display-buffer-overriding-action'.
3039 **** The procedure of `display-buffer' etc. to choose a window is
3040 determined by combining `display-buffer-overriding-action',
3041 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3042 and `display-buffer-fallback-action'. The second and fourth of these
3043 are user-customizable variables.
3045 See the docstring of `display-buffer' for details.
3047 *** New functions `window-state-get' and `window-state-put'.
3048 These functions allow to save and restore the state of an arbitrary
3049 frame or window as an Elisp object.
3053 *** New variable `completion-extra-properties' used to specify extra
3054 properties of the current completion:
3055 - :annotate-function, same as the old completion-annotate-function.
3056 - :exit-function, function to call after completion took place.
3058 *** Functions on `completion-at-point-functions' can return any of the
3059 properties valid for `completion-extra-properties'.
3061 *** `completion-annotate-function' is obsolete.
3063 *** New `metadata' method for completion tables. The metadata thus returned
3064 can specify various details of the data returned by `all-completions':
3065 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3066 used to select a style in completion-category-overrides.
3067 - `annotation-function' to add annotations in *Completions*.
3068 - `display-sort-function' to specify how to sort entries in *Completions*.
3069 - `cycle-sort-function' to specify how to sort entries when cycling.
3071 *** `minibuffer-local-filename-must-match-map' is not used any more.
3072 Instead, the bindings in `minibuffer-local-filename-completion-map'
3073 are combined with `minibuffer-local-must-match-map'.
3075 *** New variable `completing-read-function' allows overriding the
3076 behavior of `completing-read'.
3078 ** `glyphless-char-display' can now distinguish between graphical and
3079 text terminal display, via a char-table entry that is a cons cell.
3081 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3082 Instead, the offending function is removed.
3086 *** New function `run-hook-wrapped' for running an abnormal hook by
3087 passing the hook functions as arguments to a "wrapping" function.
3088 Like `run-hook-with-args-until-success', it stops at the first
3089 non-nil return value.
3091 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3092 set of "wrapping" filters, similar to around advice.
3093 (A version of this macro was actually added in Emacs 23.2 but was not
3094 advertised at the time.)
3098 *** New macro `condition-case-unless-debug' (this was actually added in
3099 Emacs 23.1 as condition-case-no-debug, but not advertised)
3101 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3103 *** Variable `stack-trace-on-error' removed.
3105 *** The debugger can now "continue" from an error, which means it will
3106 jump to the error handler as if the debugger had not been invoked
3107 instead of jumping all the way to the top-level.
3109 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3110 This can be useful when `inhibit-quit' is set.
3112 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3113 named Emacs server instances.
3115 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3116 to redirect STDOUT to a file.
3118 ** The function `format-time-string' now supports the %N directive,
3119 for higher-resolution time stamps.
3121 ** New input reading functions
3123 *** New function `read-char-choice' reads a restricted set of
3124 characters, discarding any inputs not inside the set.
3126 *** The command `read-color' now requires a match for a color name
3127 or RGB triplet, instead of signaling an error if the user provides
3130 **** `facemenu-read-color' is now an alias for `read-color'.
3132 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3133 The variable is now used to load all kind of supported dynamic libraries,
3134 not just image libraries. The previous name is still available as an
3137 ** Syntax parsing changes
3139 *** New variable `syntax-propertize-function'.
3140 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3141 This allows syntax-table properties to be set independently from font-lock:
3142 just call syntax-propertize to make sure the text is propertized.
3143 Together with this new variable come a new hook
3144 syntax-propertize-extend-region-functions, as well as two helper functions:
3145 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3146 as-is; and syntax-propertize-rules which provides a new way to specify
3149 *** Syntax tables support a new "comment style c" additionally to style b.
3151 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3153 ** frame-local variables cannot be let-bound any more.
3155 ** Major and minor mode changes
3157 *** `set-auto-mode' now respects mode: local variables at the end of files,
3158 as well as those in the -*- line.
3160 *** `prog-mode' is a new major mode from which programming modes
3163 **** `prog-mode-hook' can be used to enable features for programming
3164 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3165 on-the-fly spell checking for comments and strings.
3167 **** New minor modes `prettify-symbols-mode' and
3168 `global-prettify-symbols-mode' let the user enable symbol
3169 prettification (replacing a string like "lambda" with the Greek lambda
3172 *** New hook `change-major-mode-after-body-hook', run by
3173 `run-mode-hooks' just before any other mode hooks.
3175 *** Enabled globalized minor modes can be disabled in specific major modes.
3176 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3177 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3179 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3181 ** File-handling changes
3183 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3184 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3185 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3186 argument is supplied (see Trash changes, above).
3188 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3190 ** Tool-bars can display separators.
3191 Tool-bar separators are handled like menu separators in menu-bar maps,
3192 i.e. via menu entries of the form `(menu-item "--")'.
3196 *** Animated images support (currently animated gifs only).
3198 **** `image-animated-p' returns non-nil if an image can be animated.
3200 **** `image-animate' animates a supplied image spec.
3202 **** `image-animate-timer' returns the timer object for an image that
3205 *** `image-extension-data' has been renamed to `image-metadata'.
3206 The old name is an obsolete alias to the new one.
3208 *** Image mode can view any image type that ImageMagick supports.
3209 This requires Emacs to be built with ImageMagick support.
3211 **** New function `imagemagick-types', defined if ImageMagick support
3212 is enabled, returns a list of image file extensions that your
3213 ImageMagick installation supports.
3215 **** New function `imagemagick-register-types' enables ImageMagick
3216 image types in Image mode and in `create-image' and other helper
3219 **** New option `imagemagick-types-inhibit' excludes certain
3220 ImageMagick image types from `imagemagick-register-types'.
3222 **** With ImageMagick support, there are extra Image mode commands to
3223 resize and rotate images: `image-transform-fit-to-height',
3224 `image-transform-fit-to-width', `image-transform-set-rotation', and
3225 `image-transform-set-scale'.
3227 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3228 passes it to the mail user agent function. This argument specifies an
3229 action for returning to the caller after finishing with the mail. For
3230 example, this is used by Rmail to optionally delete a mail window.
3232 ** XML and HTML parsing
3233 If Emacs is compiled with libxml2 support, there are two new
3234 functions: `libxml-parse-html-region' (which parses "real world" HTML)
3235 and `libxml-parse-xml-region' (which parses XML). Both return an
3236 Emacs Lisp parse tree.
3238 ** Networking and encryption changes
3240 *** `open-network-stream' can now be used to open an encrypted stream.
3241 It now accepts an optional `:type' parameter for initiating a TLS
3242 connection, directly or via STARTTLS. To do STARTTLS, additional
3243 parameters (`:end-of-command', `:success', `:capabilities-command')
3244 must also be supplied.
3246 *** New library gnutls.el.
3247 The new function `gnutls-available-p' returns non-nil if Emacs is
3248 built with GnuTLS support. The main entry points are
3249 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3250 these functions through `open-network-stream', because that can
3251 upgrade connections through STARTTLS opportunistically or use plain
3252 SSL, depending on your needs. For debugging, set `gnutls-log-level'
3255 *** New primitive `secure-hash' that supports many secure hash algorithms:
3256 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3257 sha1.el has been removed. The `sha1' feature is provided by default.
3261 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3263 ** Progress reporters can now "spin".
3264 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3265 now be nil, or omitted. This makes a "non-numeric" reporter. Each
3266 time you call `progress-reporter-update' on that progress reporter,
3267 with a nil or omitted VALUE argument, the reporter message is
3268 displayed with a "spinning bar".
3270 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
3271 being reverted, even if the buffer has a local `revert-buffer-function'.
3273 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3274 If delayed-warnings-list is non-nil, the command loop calls
3275 `delayed-warnings-hook' after `post-command-hook'. At present, this
3276 is only used by Emacs on some platforms to display warnings during
3277 startup, which might otherwise not be noticed. This uses the
3278 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
3280 ** rx.el has a new `group-n' construct for explicitly numbered groups.
3282 ** New function `make-composed-keymap' that constructs a new keymap
3283 from multiple input maps. You can use this to make a keymap that
3284 inherits from multiple maps, eg:
3285 (set-keymap-parent newmap (make-composed-keymap othermap parent))
3287 ** New function `string-prefix-p'.
3288 (This was actually added in Emacs 23.2 but was not advertised at the time.)
3290 ** New reader macro ## that stands for the empty symbol.
3291 This means that the empty symbol can now be read back. Also, #: by itself
3292 (when not immediately followed by a possible symbol character) stands for
3293 an empty uninterned symbol.
3295 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
3297 ** The following functions and variables are obsolete:
3299 *** `tooltip-use-echo-area' is obsolete.
3300 Rather than setting this to t, disable Tooltip mode instead.
3302 *** buffer-substring-filters is obsolete.
3303 Use `filter-buffer-substring-functions' instead.
3305 *** `byte-compile-disable-print-circle' is obsolete.
3307 *** `deferred-action-list' and `deferred-action-function' are obsolete.
3308 Use `post-command-hook' instead.
3310 *** `font-lock-maximum-size' is obsolete.
3313 * Changes in Emacs 24.1 on Non-Free Operating Systems
3315 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
3316 and also when HOME is set to C:\ by default.
3318 ** New configure.bat options
3320 *** --enable-checking builds Emacs with extra runtime checks.
3322 *** --distfiles specifies files to be included in binary distribution.
3324 *** --without-gnutls disables automatic GnuTLS detection.
3326 *** --lib for general library linkage, works with the USER_LIBS build variable.
3328 ** New make target `dist' to create binary distribution for MS Windows.
3330 ** The Lisp function `w32-default-color-map' is now obsolete.
3331 (It is only used internally in the Emacs C code.)
3333 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3334 reappear on mouse-over. (Requires OS X 10.6 or later.)
3336 ** On Mac OS X, dragging a file into Emacs visits the file, like on
3337 other platforms, rather than inserting its contents into the buffer.
3340 ----------------------------------------------------------------------
3341 This file is part of GNU Emacs.
3343 GNU Emacs is free software: you can redistribute it and/or modify
3344 it under the terms of the GNU General Public License as published by
3345 the Free Software Foundation, either version 3 of the License, or
3346 (at your option) any later version.
3348 GNU Emacs is distributed in the hope that it will be useful,
3349 but WITHOUT ANY WARRANTY; without even the implied warranty of
3350 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3351 GNU General Public License for more details.
3353 You should have received a copy of the GNU General Public License
3354 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
3359 paragraph-separate: "[
\f]*$"