1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2010-2014 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
9 This file is about changes in Emacs version 24.
11 See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12 and NEWS.1-17 for changes in older Emacs versions.
14 You can narrow news to a specific version by calling `view-emacs-news'
15 with a prefix argument or by typing C-u C-h C-n.
18 +++ indicates that all necessary documentation updates are complete.
19 (This means all relevant manuals in doc/ AND lisp doc-strings.)
20 --- means no change in the manuals is needed.
21 When you add a new item, use the appropriate mark if you are sure it applies,
22 otherwise leave it unmarked.
25 * Installation Changes in Emacs 24.5
28 ** Building Emacs now requires C99 or later.
30 ** Building Emacs now requires GNU make.
32 ** By default, Emacs no longer works on IRIX. We expect that Emacs
33 users are not affected by this, as SGI stopped supporting IRIX in
34 December 2013. If you are affected, please send a bug report. You
35 should be able to work around the problem either by porting the Emacs
36 undumping code to GCC under IRIX, or by configuring --with-wide-int,
37 or by sticking with Emacs 24.4.
40 ** The configure option `--with-pkg-config-prog' has been removed.
41 Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
44 ** Building Emacs for MS-Windows requires at least Windows XP
45 or Windows Server 2003. The built binaries still run on all versions
46 of Windows starting with Windows 9X.
49 * Startup Changes in Emacs 24.5
52 * Changes in Emacs 24.5
55 ** The default value of `history-length' has increased to 100.
58 ** The new variable `term-file-aliases' replaces some files from lisp/term.
59 The function `tty-run-terminal-initialization' consults this variable
60 when deciding what terminal-specific initialization code to run.
63 ** New variable `system-configuration-features', listing some of the
64 main features that Emacs was compiled with. This is mainly intended
65 for use in Emacs bug reports.
68 * Editing Changes in Emacs 24.5
70 Emacs now supports "bracketed paste mode" when running on a terminal
71 that supports it. This facility allows Emacs to understand pasted
72 chunks of text as strings to be inserted instead of interpreting each
73 character in the pasted text as actual user input, resulting in a
74 paste experience similar to that under a window system and significant
75 performance improvements when pasting large amounts of text.
78 * Changes in Specialized Modes and Packages in Emacs 24.5
81 *** New functions font-lock-ensure and font-lock-flush that should be used
82 instead of font-lock-fontify-buffer when called from Elisp.
85 ** The Rmail commands d, C-d and u now handle repeat counts
86 to delete or undelete multiple messages.
91 *** New commands to insert diary entries with Chinese dates:
92 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
93 `diary-chinese-insert-monthly-entry'
94 `diary-chinese-insert-yearly-entry'
97 *** Calendar can list and mark diary entries with Chinese dates:
98 `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
100 ** In sh-mode, you can now use `sh-shell' as a file-local variable to
101 specify the type of shell in use (bash, csh, etc).
103 ** The URL package accepts now the protocols "ssh", "scp" and "rsync".
104 When `url-handler-mode' is enabled, file operations for these
105 protocols as well as for "telnet" and "ftp" are passed to Tramp.
113 * New Modes and Packages in Emacs 24.5
116 * Incompatible Lisp Changes in Emacs 24.5
118 ** window-configurations do not record the buffers's marks any more.
120 ** inhibit-modification-hooks now also inhibits lock-file checks as well as
121 active region handling.
123 ** deactivate-mark is now buffer-local.
125 ** cl-the now asserts that its argument is of the given type.
128 * Lisp Changes in Emacs 24.5
130 ** New function `funcall-interactively', which works like `funcall'
131 but makes `called-interactively-p' treat the function as (you guessed it)
132 called interactively.
134 ** New function `function-put' to use instead of `put' for function properties.
137 ** New properties that can be specified with `declare':
138 *** (interactive-only INSTEAD), tells to use INSTEAD for non-interactive use.
139 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
140 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
144 ** New macro `with-file-modes', for evaluating expressions with default file
145 permissions set to temporary values (e.g., for creating private files).
147 ** You can access the slots of structures using `cl-struct-slot-value'.
149 ** Functions `rmail-delete-forward' and `rmail-delete-backward' take an
150 optional repeat-count argument.
153 * Changes in Emacs 24.5 on Non-Free Operating Systems
156 * Installation Changes in Emacs 24.4
159 ** Emacs can now be compiled with ACL support.
160 This happens by default if a suitable support library is found at
161 build time, like libacl on GNU/Linux. To prevent this, use the
162 configure option `--disable-acl'. See below for related features.
165 ** Emacs can now be compiled with file notification support.
166 This happens by default if a suitable system library is found at
167 build time. To prevent this, use the configure option
168 `--without-file-notification'. See below for file-notify features.
169 This feature is not available for the Nextstep port.
172 ** Emacs can now be compiled with zlib support.
173 This happens by default if zlib is present, which it normally is.
174 To prevent this, use the configure option `--without-zlib'.
175 This provides the function `zlib-decompress-region'; see below for details.
178 ** The configure option `--without-compress-info' has been generalized,
179 and renamed to `--without-compress-install'. It now prevents compression
180 of _any_ files during installation.
183 ** The configure option `--with-crt-dir' has been removed.
184 It is no longer needed, as the crt*.o files are no longer linked specially.
187 ** Directories passed to configure option `--enable-locallisppath' are
188 no longer created during installation.
191 ** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
192 This requires pkg-config to be available at build time.
195 * Startup Changes in Emacs 24.4
198 ** When initializing `load-path', an empty element in the EMACSLOADPATH
199 environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
200 "/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
201 load-path (the one that would have been used if EMACSLOADPATH was unset).
202 This makes it easier to _extend_ the load-path via EMACSLOADPATH
203 (previously, EMACSLOADPATH had to specify the complete load-path,
204 including the defaults). (In older versions of Emacs, an empty element
205 was replaced by ".", so use an explicit "." now if that is what you want.)
208 ** The -L option, which normally prepends its argument to load-path,
209 will instead append, if the argument begins with `:' (or `;' on MS Windows;
210 i.e., `path-separator').
213 ** If you use either site-load.el or site-init.el to customize the dumped
214 Emacs executable, any changes to `load-path' that these files make
215 will no longer be present after dumping. To affect a permanent change
216 to `load-path', use the `--enable-locallisppath' option of `configure'.
219 ** The user option `initial-buffer-choice' can now specify a function
220 to set up the initial buffer.
223 * Changes in Emacs 24.4
226 ** New function `zlib-decompress-region', which decompresses gzip- and
227 zlib-format compressed data using built-in zlib support, if available.
230 ** New option `gnutls-verify-error', if non-nil, means that Emacs
231 should reject SSL/TLS certificates that GnuTLS determines as invalid.
232 (This option defaults to nil at present, but this is expected to change
233 in a future release.)
236 ** Emacs now supports menus on text-mode terminals.
237 If the terminal supports a mouse, clicking on the menu bar, or on
238 sensitive portions of the mode line or header line, will drop down the
239 menu defined at that position. Likewise, clicking C-mouse-2 or
240 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
243 If the text terminal does not support a mouse, you can activate the
244 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
246 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
247 customize the option `tty-menu-open-use-tmm' to a non-nil value.
248 (Typing M-` always invokes `tmm-menubar', even if `tty-menu-open-use-tmm'
252 ** The *Messages* buffer is created in `messages-buffer-mode',
253 a new major mode, with read-only status. Any code that might create
254 the *Messages* buffer should call the function `messages-buffer' to do
255 so and set up the mode.
258 ** Emacs can now support ACLs (access control lists).
259 This requires a suitable support library to be found at build time.
260 On GNU/Linux, the POSIX ACL interface is used via libacl.
261 On MS-Windows, the NT Security APIs are used to emulate the POSIX interface.
264 *** Emacs preserves the ACL entries of files when backing up.
266 *** New functions `file-acl' and `set-file-acl' get and set the ACL
269 ** Multi-monitor support has been added.
272 *** New functions `display-monitor-attributes-list' and
273 `frame-monitor-attributes' can be used to obtain information about
274 each physical monitor on multi-monitor setups.
277 *** The functions `display-pixel-width' and `display-pixel-height' now
278 behave consistently among the platforms: they return the pixel width
279 or height for all physical monitors associated with the given display
280 as if they were on X. To get information for each physical
281 monitor, use the new functions above. Similar notes also apply to
282 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
283 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
286 ** The cursor stops blinking after 10 blinks (by default) on X and NS.
287 You can change the default by customizing `blink-cursor-blinks'.
290 ** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
291 This affects View mode, etc.
294 ** The default value of `make-backup-file-name-function' is no longer nil.
295 Instead it defaults to a function that does what the nil value used to.
300 *** The command `apropos-variable' is renamed to `apropos-user-option'.
301 `apropos-user-option' shows all user options while `apropos-variable'
302 shows all variables. When called with a universal prefix argument,
303 the two commands swap their behaviors. When `apropos-do-all' is
304 non-nil, they output the same results.
307 *** The key `?' now describes prefix bindings, like `C-h'.
310 *** The command `describe-function' has been extended for EIEIO.
311 Running it on constructors will show a full description of the
312 generated class. For generic functions, it will show all
313 implementations together with links to the source. The old commands
314 `describe-class', `describe-constructor' and `describe-generic' were
318 *** The function `quail-help' is no longer an interactive command.
319 Use `C-h C-\' (`describe-input-method') instead.
324 *** ImageMagick images now support the :max-width and :max-height keywords.
327 *** When using `create-image' with image data, you can pass a :format
328 attribute (via the property-list argument) in order to help
329 ImageMagick detect the image type. The value should be a MIME
330 content-type that is found in the new variable `image-format-suffixes'.
332 ** Frame and window changes
335 *** The function `window-in-direction' introduced in Emacs 24.1 now
336 takes additional arguments for specifying a reference point, wrapping
337 selection around frame borders, and specifying ways to select the
341 *** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
342 bound to <f11> and M-<f10>, respectively.
345 *** New hooks `focus-in-hook', `focus-out-hook'.
346 These are normal hooks run when an Emacs frame gains or loses input focus.
349 *** Emacs can now change frame sizes in units of pixels, rather than
350 text rows or columns. When maximizing a frame or making it fullscreen,
351 remaining extra pixels are no longer given to the minibuffer, the rightmost
352 fringe, or other unusable space, but are distributed among the text
353 areas of the frame's windows. If the new option `frame-resize-pixelwise'
354 is non-nil, all frame size changes happen pixelwise and set the
355 corresponding size hints for the window manager.
358 *** Emacs can now change window sizes in units of pixels.
359 Mouse-dragging a mode line or window divider now changes the size of
360 adjacent windows pixelwise. If the new option `window-resize-pixelwise'
361 is non-nil, functions like `balance-windows-area' and `fit-window-to-buffer'
362 resize windows pixelwise. Most functions for changing or accessing
363 window sizes now have an additional argument that allows changes to apply,
364 or values to be returned, in pixels instead of lines/columns.
367 *** The functions `window-body-height' and `window-body-width' now never
368 count partially visible lines or columns if called with a nil PIXELWISE
372 *** Emacs can now draw dividers between adjacent windows. To put
373 dividers between side-by-side/vertically stacked windows customize the
374 frame parameters `right-divider-width' and `bottom-divider-width' to
375 some positive integer. You can drag dividers with the mouse (they show
376 a corresponding cursor when the mouse hovers over them). You can change
377 the appearance of dividers by customizing the faces `window-divider',
378 `window-divider-first-pixel', and `window-divider-last-pixel'. The last
379 two are useful to provide a 3D effect, or to better distinguish dividers
380 from surrounding display objects.
383 *** New functions are provided to return the pixel sizes of window
384 components, namely `window-scroll-bar-width', `window-mode-line-height'
385 `window-header-line-height', `window-right-divider-width' and
386 `window-bottom-divider-width'.
389 *** The new function `window-text-pixel-size' returns the size of the
390 text of a window's buffer in pixels. This allows functions like
391 `fit-frame-to-buffer' and `fit-window-to-buffer' to accurately fit a
392 window to its buffer as it will be displayed.
395 *** `fit-window-to-buffer' can now resize windows in both dimensions.
396 This behavior is controlled by the new option
397 `fit-window-to-buffer-horizontally'. The new option
398 `fit-frame-to-buffer' allows to fit the window's frame to its buffer.
401 *** `fit-frame-to-buffer' now fits frames in both dimensions. The new
402 options `fit-frame-to-buffer-margins' and `fit-frame-to-buffer-sizes'
403 control the size of the frame and its position on screen.
406 *** Temp Buffer Resize Mode can now adjust height and width of windows
407 and frames. `temp-buffer-resize-mode' is now able to adjust the height
408 and the width of a window displaying a temporary buffer. The new option
409 `temp-buffer-max-width' allows to control the width of temporary buffer
410 windows. Moreover, if the new option `fit-frame-to-buffer' is non-nil
411 and the buffer appears in the root window of a frame, Temp Buffer Resize
412 Mode will try to adjust width and/or height of the frame.
415 *** `split-window' is now a non-interactive function, not a command.
416 As a command, it was a special case of `C-x 2' (`split-window-below'),
417 and as such superfluous. After being reimplemented in Lisp, its
418 interactive form was mistakenly retained.
421 *** The functions `window-size' and `window-total-size' now have an
422 optional argument to return a rounded size value.
425 *** `window-state-put' now allows to put a window state into internal
429 *** New option `scroll-bar-adjust-thumb-portion'.
430 Available only on X, this option allows to control over-scrolling
431 using the scroll bar (i.e. dragging the thumb down even when the end
432 of the buffer is visible).
435 *** New basic action function `display-buffer-in-previous-window' has
436 `display-buffer' display a buffer in a window previously showing that
440 *** New basic action function `display-buffer-at-bottom' has
441 `display-buffer' choose or make a window at the bottom of the selected
445 *** New display action function `display-buffer-no-window' to not
446 display the buffer in a window.
449 *** New display action alist entry `allow-no-window' to indicate the
450 caller of `display-buffer' is ready to handle the case of not
451 displaying the buffer in a window.
453 ** Lisp evaluation changes
455 *** `eval-defun' on an already defined defcustom calls the :set function,
459 *** The commands `eval-expression' (`M-:'), `eval-last-sexp' (`C-x C-e'),
460 and `eval-print-last-sexp' (`C-j' in Lisp Interaction mode) can take a
461 zero prefix argument. This disables truncation of lists in the output,
462 equivalent to setting `(eval-expression-)print-length' and
463 `(eval-expression-)print-level' to nil. Additionally, it causes integers
464 to be printed in other formats (octal, hexadecimal, and character).
467 *** New hook `eval-expression-minibuffer-setup-hook' run by
468 `eval-expression' on entering the minibuffer.
471 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
474 ** `cache-long-line-scans' is now non-nil, and renamed to `cache-long-scans',
475 because it affects caching of paragraph scanning results as well.
476 There is no reason to set this to nil except for debugging purposes.
479 ** The option `set-mark-default-inactive' has been deleted.
480 This unfinished feature was introduced by accident in Emacs 23.1;
481 simply disabling Transient Mark mode does the same thing.
484 ** The default value of `comment-use-global-state' is now t,
485 and this variable has been marked obsolete.
488 ** `emacs-bzr-version' has been renamed to `emacs-repository-version',
489 and works for git too, if you fetch the repository notes.
492 ** New option `load-prefer-newer' affects how the `load' function chooses
493 the file to load. If this is non-nil, then when both .el and .elc
494 versions of a file exist, and the caller did not explicitly specify
495 which one to load, then the newer file is loaded. The default, nil,
496 means to always load the .elc file.
499 * Editing Changes in Emacs 24.4
501 ** Indentation changes
504 *** `electric-indent-mode' is now enabled by default.
505 Typing RET reindents the current line and indents the new line.
506 `C-j' inserts a newline but does not indent. In some programming modes,
507 additional characters are electric (eg `{').
510 *** New buffer-local `electric-indent-local-mode'.
513 *** The behavior of `C-x TAB' (`indent-rigidly') has changed.
514 When invoked without a prefix argument, it now activates a transient
515 mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
516 the text indentation in the region. Typing any other key resumes
517 normal editing behavior.
520 *** `tab-stop-list' is now implicitly extended to infinity by repeating
521 the last step. Its default value is changed to nil, which means a tab
522 stop every `tab-width' columns.
525 ** New command `cycle-spacing' acts like a smarter `just-one-space'.
526 When called in succession, it cycles between spacing conventions:
527 one space, no spaces, original spacing.
530 ** The new function `fill-single-char-nobreak-p' can stop fill from breaking
531 a line after a one-letter word, which is an error in some typographical
532 conventions. To use it, add it to the `fill-nobreak-predicate' hook.
535 ** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
538 ** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
539 Most commands are still unaware of it, but kill/yank do work on the rectangle.
542 ** New option `visual-order-cursor-movement'.
543 If this is non-nil, cursor motion with arrow keys will follow the
544 visual order of characters on the screen: <left> always moves to the
545 left, <right> always moves to the right, disregarding the surrounding
546 bidirectional context.
551 *** All interactive commands that read a register (`copy-to-register', etc.)
552 now display a temporary window after `register-preview-delay' seconds
553 that summarizes existing registers. To disable this, set that option to nil.
554 Interactive commands that read registers and want to make use of this
555 should use `register-read-with-preview' to read register names.
558 *** New command `frameset-to-register' bound to `C-x r f', replacing
559 `frame-configuration-to-register'. It offers similar functionality,
560 plus enhancements like the ability to restore deleted frames.
561 (`frame-configuration-to-register' still exists, but no longer has a
565 *** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
569 ** New command `delete-duplicate-lines'.
570 This searches the region for identical lines, and removes all but one
571 copy of each repeated line. The lines need not be sorted.
574 ** `blink-matching-paren' now only highlights the matching open-paren
575 by default, instead of moving cursor. Set this variable to `jump' to
576 enable the old behavior.
579 * Changes in Specialized Modes and Packages in Emacs 24.4
582 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
584 ~/.emacs.d/timelog replaces ~/.timelog
585 ~/.emacs.d/vip replaces ~/.vip
586 ~/.emacs.d/viper replaces ~/.viper
587 ~/.emacs.d/ido.last replaces ~/.ido.last
588 ~/.emacs.d/kkcrc replaces ~/.kkcrc
589 ~/.emacs.d/quickurls replaces ~/.quickurls
590 ~/.emacs.d/idlwave/ replaces ~/.idlwave/
591 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
592 ~/.emacs.d/places replaces ~/.emacs-places
593 ~/.emacs.d/shadows replaces ~/.shadows
594 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
595 ~/.emacs.d/strokes replaces ~/.strokes
596 ~/.emacs.d/notes replaces ~/.notes
597 ~/.emacs.d/type-break replaces ~/.type-break
598 Also the following files used by the now obsolete otodo-mode.el:
599 ~/.emacs.d/todo-do replaces ~/.todo-do
600 ~/.emacs.d/todo-done replaces ~/.todo-done
601 ~/.emacs.d/todo-top replaces ~/.todo-top
603 ** Backtrace and debugger
606 *** New Lisp debugger command `v' (`debugger-toggle-locals') toggles the
607 display of local variables of the current stack frame.
610 *** The Lisp debugger's `e' command (`debugger-eval-expression') now includes
611 the lexical environment when evaluating the code in the context at point
612 (and so allows you to access lexical variables).
615 *** New minor mode `jit-lock-debug-mode' helps you debug code run via JIT Lock.
618 ** Battery information can now be retrieved from BSD's `apm' utility.
621 ** In the Buffer Menu, `M-s a C-o' shows matches for a regexp in marked buffers.
623 ** Calendar and Diary
626 *** New faces `calendar-weekday-header', `calendar-weekend-header',
627 and `calendar-month-header'.
630 *** New option `calendar-day-header-array'.
633 *** New variable `diary-from-outlook-function', used by the command
634 `diary-from-outlook'.
637 *** The variable `calendar-font-lock-keywords' is obsolete.
642 *** Calc by default now uses the Gregorian calendar for all dates, and
643 uses January 1, 1 AD as its day number 1. Previously Calc used the
644 Julian calendar for dates before September 14, 1752, and it used
645 December 31, 1 BC as its day number 1; the new scheme is more
646 consistent with Calendar's calendrical system and day numbering.
649 *** The new option `calc-gregorian-switch' lets you configure if
650 (and when) Calc switches from the Julian to the Gregorian calendar.
653 *** Support for ISO 8601 dates.
660 **** The cpp-root project now supports executing a compile command.
661 It can be set through the new :compile-command slot or the
662 buffer-local variable `compile-command'.
665 **** Better selection of include directories for the 'linux' project.
666 Include directories now support out-of-tree build directories and
667 target architecture auto-detection.
672 **** Improved detection of used namespaces in current scope in C++.
674 **** Parsing of default values for variables and function arguments in C/C++.
675 They are also displayed by the summarize feature in the mode line.
677 **** Improved parsing of function pointers in C/C++.
678 This also includes parsing of function pointers as function arguments.
680 **** Parsing of C/C++ preprocessor macros that open new scope.
681 For example, this enables parsing of macros that open new namespaces.
683 **** Support for 'this' pointer in inline member functions in C++.
688 *** New macro `cl-tagbody'.
689 This executes statements while allowing for control transfer to labels.
692 *** letf is now just an alias for cl-letf.
697 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
698 Hence, you can now enable it independently from those modes, and from
699 `transient-mark-mode'.
702 *** `cua-highlight-region-shift-only' is now obsolete.
703 You can disable `transient-mark-mode' to get the same result.
706 *** CUA's rectangles can now be used without CUA by calling the command
707 `cua-rectangle-mark-mode'.
712 *** Support for completion, ElDoc, and Flycheck has been added.
715 *** The current CFEngine syntax is parsed from "cf-promises -s json".
716 There is a fallback syntax available if you don't have cf-promises or
717 if your version doesn't support that option. See option `cfengine-cf-promises'.
720 ** Delete Selection mode can now be used without Transient Mark mode.
725 *** `desktop-save-mode' by default now auto-saves an existing desktop file
726 after `desktop-auto-save-timeout'. To disable this, customize that option
730 *** Desktop now saves and restores the frame/window configuration.
731 To disable this, set `desktop-restore-frames' to nil.
732 See also related options `desktop-restore-reuses-frames',
733 `desktop-restore-in-current-display', and `desktop-restore-forces-onscreen'.
736 ** New Dired minor mode `dired-hide-details-mode' toggles whether details,
737 such as file ownership or permissions, are visible in Dired buffers.
738 See the new options `dired-hide-details-hide-symlink-targets' and
739 `dired-hide-details-hide-information-lines' for customizing what to hide.
742 ** You can enable ElDoc inside the `eval-expression' minibuffer with:
743 (add-hook 'eval-expression-minibuffer-setup-hook 'eldoc-mode)
744 The results display in the mode line.
746 ** Electric Pair mode
749 *** New option `electric-pair-preserve-balance', enabled by default.
750 If non-nil, pairing/skipping only kicks in when that help the balance
751 of parentheses and quotes, i.e. the buffer should end up at least as
754 You can further control this behavior by adjusting the predicates
755 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
758 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
759 In `electric-pair-mode', the commands `backward-delete-char' and
760 `backward-delete-char-untabify' are now bound to electric variants
761 that delete the closer when invoked between adjacent pairs.
764 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
765 In `electric-pair-mode', inserting a newline between adjacent pairs
766 opens an extra newline after point, which is indented if
767 `electric-indent-mode' is also set.
770 *** New option `electric-pair-skip-whitespace', enabled by default.
771 This controls if skipping over closing delimiters should jump over any
772 whitespace slack. Setting it to `chomp' makes it delete this
773 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
776 *** New variables control the pairing in strings and comments.
777 You can customize `electric-pair-text-pairs' and
778 `electric-pair-text-syntax-table' to tweak pairing behavior inside
779 strings and comments.
782 ** New EPA option `epa-mail-aliases'.
783 You can set this to a list of email address aliases that `epa-mail-encrypt'
784 should use to find keys.
787 ** New ERC option `erc-accidental-paste-threshold-seconds'.
788 If set to a number, this can be used to avoid accidentally pasting large
789 amounts of data into the ERC input.
792 ** New ERT macro `skip-unless' allows skipping ERT tests.
793 See the ERT manual for details.
798 *** `eshell' now supports visual subcommands and options.
799 Eshell has been able to handle "visual" commands (interactive,
800 non-line oriented commands such as top that require display
801 capabilities not provided by eshell) by running them in an Emacs
802 terminal emulator. See `eshell-visual-commands'.
804 This feature has been extended to subcommands and options that make a
805 usually line-oriented command a visual command. Typical examples are
806 "git log" and "git <command> --help", which display their output in a
807 pager by default. See `eshell-visual-subcommands' and
808 `eshell-visual-options'.
811 *** New Eshell-Tramp module.
812 External su and sudo commands are now the default; the internal,
813 Tramp-using variants can still be used by enabling the eshell-tramp
817 ** New F90 mode option `f90-smart-end-names'.
820 Icomplete is now more similar to Ido.
823 *** Icomplete by default now applies to all forms of minibuffer completion.
824 The variable `icomplete-with-completion-tables' (now a user option)
825 controls this. To restore the old behavior, set it back to
826 '(internal-complete-buffer).
829 *** You can navigate through and select completions using the keys
830 from `icomplete-minibuffer-map'.
833 *** The string that separates potential completions is now a customizable
834 option (`icomplete-separator'). The default is " | " rather than ",".
837 *** New face `icomplete-first-match'; and new options
838 `icomplete-hide-common-prefix' and `icomplete-show-matches-on-no-input'.
841 *** The option `icomplete-show-key-bindings' has been removed.
846 *** An Ido user manual is now included.
849 *** The option `ido-use-virtual-buffers' can now take the value `auto'.
850 This means to use virtual buffers if the current ido input does not match
854 *** The variable `ido-decorations' can optionally have two new elements,
855 which are the brackets to use around the sole remaining completion.
860 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
861 visit the next image file and the previous image file in the same
862 directory, respectively.
865 *** New commands to show specific frames of multi-frame images.
866 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
867 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
870 *** New commands to speed up, slow down, or reverse animation.
871 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
872 speed up and slow down the animation. `a r' (`image-reverse-speed')
873 to reverse it and `a 0' (`image-reset-speed') to reset it.
876 *** The command `image-mode-fit-frame' deletes other windows.
877 When toggling, it restores the frame's previous window configuration.
878 It also has an optional frame argument, which can be used by Lisp
879 callers to fit the image to a frame other than the selected frame.
884 *** New global command `M-s h .' (`highlight-symbol-at-point') highlights
885 the symbol found near point.
888 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
889 will cycle through faces in `hi-lock-face-defaults' without prompting.
892 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
897 *** New Info face `info-index-match', used to highlight matches in index
898 entries displayed by `Info-index-next', `Info-virtual-index' and
902 *** The Info-edit command is obsolete. Editing Info nodes by hand
903 has not been relevant for some time.
908 *** New option `js-switch-indent-offset'.
911 *** Better indentation of multiple-variable declarations.
912 If a declaration spans several lines, variables on the following lines
913 are lined up to the first one.
916 *** Recognition and better indentation of continuations in array comprehensions.
919 ** MH-E has been updated to version 8.5 - see separate MH-E-NEWS file.
924 *** Font locking for Texinfo comments and new keywords.
926 *** Completion in Octave file buffers.
930 *** Jump to definition.
932 *** Documentation lookup/search.
935 ** OPascal mode is the new name for Delphi mode
938 *** All delphi-* variables and functions have been renamed to opascal-*.
939 Obsolete aliases exist for those likely to have been used externally.
942 *** The option `delphi-newline-always-indents' has been removed.
943 Use `electric-indent-mode' instead.
946 *** The TAB key runs the standard `indent-for-tab-command', not `delphi-tab'.
951 *** In the `list-packages' buffer, you can use `f' (`package-menu-filter')
952 to filter the list of packages by a keyword.
955 *** In the `describe-package' buffer, there are now buttons listing the
956 keywords related to the package. Click on a button to see other packages
957 related to that keyword.
960 *** The format of `archive-contents' files, generated by package
961 repositories, has changed to allow a new (fifth) element in the data
962 vectors, containing an associative list with extra properties.
963 (For example, `describe-package' uses the `:url' extra property to
964 display a "Homepage" header.)
967 ** In Prolog mode, `prolog-use-smie' has been removed,
968 along with the non-SMIE indentation code.
973 *** The new command `remember-notes' creates a buffer that is saved on exit.
974 You can use it as a more permanent *scratch* buffer.
977 *** Remember can now store notes in separate files.
978 To use this, add `remember-store-in-files' to the `remember-handler-functions'
979 option. The files are saved in `remember-data-directory' using
980 names specified by `remember-directory-file-name-format'.
985 *** Customize `rmail-mbox-format' to influence some minor aspects of
986 how Rmail displays non-MIME messages.
989 *** The `unrmail' command now converts from BABYL to mboxrd format,
990 rather than mboxo. Customize `unrmail-mbox-format' to change this.
995 *** Improved syntax highlighting and indentation.
998 *** New `electric-indent-mode' integration.
1001 *** New option `ruby-encoding-magic-comment-style'.
1004 *** New option `ruby-custom-encoding-magic-comment-template'.
1007 *** New option `ruby-align-to-stmt-keywords'.
1010 *** New option `ruby-align-chained-calls'.
1013 *** More Ruby file types have been added to `auto-mode-alist'.
1015 ** Search and Replace
1018 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
1019 starts a symbol (identifier) incremental search forward with the
1020 symbol found near point added to the search string initially.
1023 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
1024 and adds it to the search string.
1027 *** `M-s i' in Isearch mode toggles whether search matches invisible text.
1030 *** `query-replace' skips invisible text when `search-invisible' is nil,
1031 and opens overlays with hidden text when `search-invisible' is `open'.
1034 *** A negative prefix arg of replacement commands replaces backward.
1035 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
1036 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
1039 *** By default, prefix arguments do not now terminate Isearch mode.
1040 Set `isearch-allow-prefix' to nil to restore old behavior.
1043 *** More Isearch commands accept prefix arguments, namely
1044 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
1045 `isearch-yank-line'.
1048 *** Word search now matches whitespace at the beginning/end
1049 of the search string if it contains leading/trailing whitespace.
1050 In an incremental word search or when using a non-nil LAX argument
1051 of `word-search-regexp', the lax matching can also match part of
1052 the first word (in addition to the lax matching of the last word).
1053 The same rules are now applied to the symbol search with the difference
1054 that it matches symbols, and non-symbol characters between symbols.
1057 ** New SES command `ses-rename-cell' allows assignment of names to SES cells.
1060 ** The shell.el option `explicit-bash-args' includes --noediting by default.
1061 All non-ancient Bash versions support this option.
1063 ** Shell Script mode
1066 *** The SMIE indentation engine is now used by default - see `sh-use-smie'.
1069 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
1074 *** You can customize the SMIE indentation of a mode via `smie-config'.
1075 The command `smie-config-guess' can help you derive the appropriate
1076 indentation settings, if you provide it with an indented sample file.
1077 Use `smie-config-save' to save the result.
1080 *** You can customize the SMIE indentation of a file by adding an entry to
1081 the file's local variables of the form: `eval: (smie-config-local '(RULES))'.
1084 *** New commands `smie-config-show-indent' and `smie-config-set-indent'.
1089 *** Improved login monitoring and appropriate response to login failures.
1090 New variable `sql-login-delay' defines maximum wait time for a connection.
1093 SQL*Plus script placeholders are properly highlighted and identified
1094 in `sql-placeholders-filter'. When starting SQL*Plus, `sql-oracle-options'
1095 are passed before the logon parameter, as required. The default now
1096 includes `-L', to limit the number of logon attempts per invocation.
1099 ** New Term mode option `term-suppress-hard-newline'.
1102 ** Todo mode has been rewritten and enhanced.
1103 The Todo mode user manual describes all commands and most user
1104 options. To support some of these features, a new file format is
1105 used, which is incompatible with the old format; however, you can
1106 convert old todo and done item files to the new format on initializing
1107 the first new todo file, or at any later time with the provided
1108 conversion command. The previous version of todo-mode.el has been
1109 renamed to otodo-mode.el and is now obsolete. New features include:
1111 *** Support for multiple todo files and archive files of done items.
1113 *** Renaming, reordering, moving, merging, and deleting categories.
1115 *** Sortable tabular summaries of categories and the item types they contain.
1117 *** Cross-category lists of items filtered by specific criteria.
1119 *** More fine-grained interaction with the Emacs diary, by being able to
1120 decide for each todo item whether it appears in the Fancy Diary display.
1122 *** Highly flexible new item insertion and item editing.
1124 *** Moving items between categories, storing done items in their category
1125 or in archive files, undoing or unarchiving done items.
1127 *** Reprioritizing items by inputting a numerical priority.
1129 *** Extensive customizability of operation and display, including many faces.
1134 *** `trace-function' and `trace-function-background' no longer prompt for
1135 the output buffer. Unless you use a prefix argument, they output to
1139 *** With a prefix argument, `trace-function' and `trace-function-background'
1140 will prompt for a "context". This is a Lisp expression, whose value at the
1141 time the function is entered/exited is printed along with the function's
1147 *** The experimental url syntax for remote file names has been removed.
1150 *** New connection method "adb", which allows to access Android
1151 devices by the Android Debug Bridge. The variable `tramp-adb-program'
1152 can be used to adapt the path of the "adb" program, if needed.
1155 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
1156 "scpc" and "rsyncc" are discontinued. The ssh option
1157 "ControlMaster=auto" is set automatically in all ssh-based methods,
1158 when possible. See `tramp-use-ssh-controlmaster-options'.
1161 *** Handlers for `file-acl' and `set-file-acl' for remote machines
1162 which support POSIX ACLs.
1165 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
1166 for remote machines which support filesystem notifications.
1169 ** New URL command `url-cookie-list' displays the current cookies,
1170 and allows you to interactively remove cookies.
1172 ** VC and related modes
1175 *** In VC directory mode, `D' displays diffs between VC-controlled
1176 whole tree revisions.
1179 *** In VC directory mode, `L' lists the change log for the current VC
1180 controlled tree in a window.
1183 *** In VC directory mode, `I' shows a log of changes that will be
1184 received with a pull operation.
1187 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
1188 under current version control system. When called with a prefix
1189 argument, you can remove a file from the ignored file list.
1194 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
1197 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
1200 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
1201 are obsolete. Customize the `woman-*' faces instead.
1203 ** Obsolete packages
1206 *** iswitchb.el; use icomplete-mode.
1209 *** longlines.el; use visual-line-mode.
1218 *** terminal.el; use term.el instead.
1221 *** the old version of todo-mode.el (renamed to otodo-mode.el).
1224 *** xesam.el (owing to the cancellation of the XESAM project).
1227 *** yow.el; use fortune.el or cookie1.el instead.
1230 * New Modes and Packages in Emacs 24.4
1233 ** New package `eww' is a built-in web browser.
1234 It is only available if Emacs is compiled with libxml2 support.
1237 ** New minor mode `superword-mode'.
1238 This overrides the default word motion commands to treat "symbol_words"
1239 as a single word, similar to what `subword-mode' does.
1242 ** New package nadvice.el offers lighter-weight advice facilities.
1245 *** add-function/remove-function, which can be used to add/remove code on any
1246 function-carrying place, such as process-filters or `<foo>-function' hooks.
1248 *** advice-add/advice-remove to add/remove a piece of advice on a named
1249 function, much like `defadvice' does.
1251 ** New package frameset.el.
1252 It provides a set of operations to save a frameset (the state of all
1253 or a subset of the existing frames and windows, somewhat similar to a
1254 frame configuration), both in-session and persistently, and restore it
1255 at some point in the future.
1258 ** New package filenotify.el provides an interface for file system
1259 notifications. It requires that Emacs be compiled with one of the
1260 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
1263 * Incompatible Lisp Changes in Emacs 24.4
1266 ** `kill-region' has lost its `yank-handler' optional argument.
1269 ** `(input-pending-p)' no longer runs other timers that are ready to run.
1270 The new optional CHECK-TIMERS parameter allows for the prior behavior.
1273 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
1276 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
1277 Some languages match those as »...«, and others as «...», so it is
1278 better for Emacs to stay neutral by default.
1281 ** In compiled Lisp files, the header no longer includes a timestamp.
1284 ** The default file coding for Emacs Lisp files is now utf-8.
1285 (See `file-coding-system-alist'.) In most cases, this change is
1286 transparent, but files that contain unusual characters without
1287 specifying an explicit coding system may fail to load with obscure
1288 errors. You should either convert them to utf-8 or add an explicit
1292 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
1293 It used to disable the minor mode, major mode, and text-property keymaps,
1294 whereas now it simply has higher precedence.
1297 ** Default process filters and sentinels are not nil any more.
1298 Instead they default to a function that does what the nil value used to do.
1301 ** `read-event' does not return decoded chars in ttys any more.
1302 As was the case in Emacs 22 and before, the decoding of terminal
1303 input, according to `keyboard-coding-system', is not performed in
1304 `read-event' any more. But unlike in Emacs 22, this decoding is still
1305 done before input-decode-map, function-key-map, etc.
1308 ** The option `inhibit-local-menu-bar-menus' has been removed.
1311 ** Frame-local variables that affect redisplay do not work any more.
1312 More specifically, redisplay does not bother to check for a frame-local
1313 value when looking up variables.
1316 ** nil and "unbound" are indistinguishable in `symbol-function'.
1317 `symbol-function' does not signal a `void-function' error any more.
1318 To determine if a symbol's function definition is void, use `fboundp'.
1321 ** `defadvice' does not honor the `freeze' flag and cannot advise
1322 special-forms any more.
1325 ** `dolist' no longer binds VAR while evaluating the RESULT form,
1326 when lexical binding is enabled. Previously, VAR was bound to nil,
1327 which often led to spurious unused-variable warnings.
1330 ** The return value of `backup-buffer' has changed.
1331 The second argument is no longer an SELinux context, instead it is an
1332 alist of extended attributes as returned by the new function
1333 `file-extended-attributes'. The attributes can be applied to another
1334 file using `set-file-extended-attributes'.
1337 ** By default `copy-file' no longer copies file permission bits to an
1338 existing destination; and it sets the file permission bits of a newly
1339 created destination to those of the source, masked by the default file
1340 permissions. To copy the file permission bits, pass t as the
1341 PRESERVE-PERMISSIONS argument of `copy-file'.
1344 ** `visited-file-modtime' now returns -1 for nonexistent files.
1345 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
1346 in the presence of files with negative time stamps.
1349 ** The cars of the elements in `interpreter-mode-alist' are now
1350 treated as regexps rather than literal strings.
1353 ** Overlay priority does not have to be nil or a non-negative integer.
1354 Overlay priority can be other kinds of Lisp objects. We didn't yet
1355 decide whether other types of values are stable enough, and therefore
1356 don't feel it's right to document them. For now, don't assume in your
1357 code that the values of overlay priority can only be either nil or an
1358 integer, always test them with an appropriate predicate to be one or
1362 * Lisp Changes in Emacs 24.4
1364 ** overlays-at can optionally sort its result by priority.
1367 ** The second argument of `eval' can now specify a lexical environment.
1370 ** New functions `special-form-p' and `macrop'.
1373 ** New macro `define-alternatives' can be used to define generic commands.
1374 Generic commands are interactive functions whose implementation can be
1375 selected among several alternatives, as a matter of user preference.
1378 ** If you give a symbol a `defalias-fset-function' property, `defalias'
1379 on that symbol will use the associated value as a function to call
1383 ** New variable `enable-dir-local-variables'.
1384 Directory-local variables are ignored if this is nil. This may be
1385 useful for modes that want to ignore directory-locals while still
1386 respecting file-local variables.
1389 ** New function `get-pos-property'.
1392 ** `read-regexp' now uses the new variable `read-regexp-defaults-function'
1393 as a function to call to provide default values.
1395 ** Completion changes
1398 *** The separator used by `completing-read-multiple' is now a regexp.
1399 The default `crm-separator' has been changed to allow surrounding spaces
1403 *** The `common-substring' argument of `display-completion-list',
1404 which has been documented as obsolete since Emacs 23.1, is now _really_
1405 obsolete, and no longer advertised. Instead either call
1406 `completion-hilit-commonality' to add the highlighting; or use
1407 `completion-all-completions', which returns highlighted strings.
1410 *** New function `completion-table-with-cache' is a wrapper for
1411 `completion-table-dynamic' that caches the result of the last lookup.
1414 *** New function `completion-table-merge' to combine several
1415 completion tables by merging their completions.
1418 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1419 display specified symbols as composed characters. E.g., in Emacs Lisp mode,
1420 this replaces the string "lambda" with the Greek lambda character.
1425 *** Functions to pop up menus and dialogs now work on all terminals,
1426 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1427 `message-box', `yes-or-no-p', etc.
1429 The function `display-popup-menus-p' will now return non-nil for a
1430 display or frame whenever a mouse is supported on that display or
1434 *** New hook `tty-setup-hook', run at the end of initializing a text terminal.
1437 *** The hook `term-setup-hook' is obsolete. It is entirely equivalent
1438 to `emacs-startup-hook'. See also the new `tty-setup-hook'.
1441 ** New hook `pre-redisplay-function'.
1444 ** New bool-vector set operation functions
1445 *** `bool-vector-exclusive-or'
1446 *** `bool-vector-union'
1447 *** `bool-vector-intersection'
1448 *** `bool-vector-set-difference'
1449 *** `bool-vector-not'
1450 *** `bool-vector-subsetp'
1451 *** `bool-vector-count-consecutive'
1452 *** `bool-vector-count-population'
1455 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1457 ** Error-handling changes
1460 *** New function `define-error'.
1463 *** `with-demoted-errors' takes an additional argument `format'.
1466 ** New macro `with-eval-after-load'.
1467 This is like the old `eval-after-load', but better behaved.
1470 ** New library subr-x.el with miscellaneous small utility functions
1471 *** `hash-table-keys'
1472 *** `hash-table-values'
1473 *** `string-blank-p'
1474 *** `string-empty-p'
1476 *** `string-reverse'
1477 *** `string-trim-left'
1478 *** `string-trim-right'
1480 *** `string-remove-prefix'
1481 *** `string-remove-suffix'
1484 ** Obsoleted functions
1487 *** `lisp-complete-symbol'
1488 *** `field-complete'
1489 *** `minibuffer-completion-contents'
1490 *** `isearch-nonincremental-exit-minibuffer'
1491 *** `isearch-filter-visible'
1492 *** `generic-make-keywords-list'
1493 *** `get-upcase-table' (use `case-table-get-table' instead).
1496 ** `with-wrapper-hook' is obsoleted by `add-function'.
1497 The few hooks that used with-wrapper-hook are replaced as follows:
1498 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1499 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1500 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1503 ** `byte-compile-interactive-only-functions' is now obsolete.
1504 To specify that a command should only be called interactively, give it
1505 a non-nil `interactive-only' property.
1508 ** `split-string' now takes an optional argument TRIM.
1509 The value, if non-nil, is a regexp that specifies what to trim from
1510 the start and end of each substring.
1513 ** New function `string-suffix-p'.
1515 ** File-handling changes
1518 *** Support for filesystem notifications.
1519 Emacs now supports notifications of filesystem changes, such as
1520 creation, modification, and deletion of files. This requires the
1521 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1522 MS-Windows systems, this is supported for Windows XP and newer
1526 *** The 9th element returned by `file-attributes' is now unspecified.
1527 Formerly, it was t if the file's gid would change if file were deleted
1528 and recreated. This value has been inaccurate for years on many
1529 platforms, and nobody seems to have noticed or cared.
1532 *** The 6th argument to `copy-file' has been renamed to
1533 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1534 Unix file permission bits as well as SELinux context.
1537 *** The function `file-ownership-preserved-p' now has an optional
1538 argument GROUP which causes it check for file group too. This can be
1539 used in place of the 9th element of `file-attributes'.
1542 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1543 argument, with the same interpretation as the returned value of
1544 `visited-file-modtime'.
1546 ** Revert and Autorevert changes
1549 *** The default values of `buffer-stale-function', `revert-buffer-function',
1550 and `revert-buffer-insert-file-contents-function' are no longer nil.
1551 Instead they default to functions that do what the nil value used to.
1554 *** `buffer-stale-function' is now used for buffers visiting files too.
1557 *** If Emacs is compiled with file notification support, it uses notifications
1558 instead of checking file time stamps. To disable this, set the user option
1559 `auto-revert-use-notify' to nil. Alternatively, you can specify a regular
1560 expression matching directories to be excluded from file notifications via
1561 `auto-revert-notify-exclude-dir-regexp'.
1564 *** The new user option `auto-revert-remote-files' enables reversion
1565 of remote files, if set to non-nil.
1570 *** The function `face-spec-set' is now like `setq' for face specs.
1571 Its third arg now accepts values specifying a face spec type (defface,
1572 custom, or override spec), and the relevant spec is set accordingly.
1575 *** New function `add-face-text-property', which can be used to
1576 conveniently prepend/append new face properties.
1579 *** Face specs set via Custom themes now replace the `defface' spec
1580 rather than inheriting from it. In other words, setting a face via a
1581 theme now behaves like setting it via Customize: you only need to
1582 specify the attributes that you want, you don't need to unset those
1583 that you don't want.
1586 *** New face characteristic (supports :underline (:style wave))
1587 specifies whether or not the terminal can display a wavy line.
1590 *** New face spec attribute :distant-foreground
1591 specifies foreground to use if background color is near the foreground
1592 color that would otherwise have been used.
1597 *** `image-animated-p' is now `image-multi-frame-p'.
1598 It returns non-nil for any image that contains multiple frames,
1599 whether or not it specifies a frame delay.
1602 *** New variable `image-default-frame-delay' gives the frame delay for
1603 animated images which do not specify a frame delay.
1606 *** New functions `image-current-frame' and `image-show-frame' for getting
1607 and setting the current frame of a multi-frame image.
1612 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1613 **** object-name -> eieio-object-name
1614 **** object-class -> eieio-object-class
1615 **** object-class-fast -> eieio--object-class
1616 **** object-class-name -> eieio-object-class-name
1617 **** object-name-string -> eieio-object-name-string
1618 **** object-num-slots -> eieio--object-num-slots
1619 **** object-set-name-string -> eieio-object-set-name-string
1620 **** class-of -> eieio-object-class
1621 **** class-name -> eieio-class-name
1622 **** class-parent -> eieio-class-parent
1623 **** class-parents -> eieio-class-parents
1624 **** class-parents-fast -> eieio-class-parents-fast
1625 **** class-children -> eieio-class-children
1626 **** class-num-slots -> eieio--class-num-slots
1627 **** class-precedence-list -> eieio-class-precedence-list
1628 **** class-direct-subclasses -> eieio-class-children
1629 **** class-direct-superclasses -> eieio-class-parents
1631 ** Changes in encoding and decoding of text
1634 *** New coding-system `prefer-utf-8'.
1635 This is like `undecided' but prefers UTF-8 on decoding if the text to
1636 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1637 any non-ASCII characters are automatically encoded as UTF-8.
1640 *** New attributes of coding-systems whose type is `undecided'.
1641 Two new attributes, `:inhibit-null-byte-detection' and
1642 `:inhibit-iso-escape-detection', determine how to detect encoding of
1643 text that includes null bytes and ISO-2022 escape sequences,
1644 respectively. Each of these attributes can be either nil, zero, or
1645 t. If it is t, decoding text ignores null bytes and, respectively,
1646 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1647 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1648 text is encoded in one of the ISO-2022 encodings, such as
1649 iso-2022-7bit. If the value is zero, Emacs consults the variables
1650 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1652 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1653 UTF-8 encoding and decoding, whenever possible.
1655 These attributes are only meaningful for coding-systems of type
1656 `undecided'. (The type of a coding-system is determined by its
1657 `:coding-type' attribute and can be accessed by calling the
1658 `coding-system-type' function.)
1661 ** The `time-to-seconds' alias to `float-time' is no longer marked obsolete.
1664 ** New functions `group-gid' and `group-real-gid'.
1667 ** The spelling of the rx.el category `chinese-two-byte' has been
1668 corrected (the first 'e' was missing).
1671 ** Minor internal changes to the details of lock files.
1672 The lock for DIR/FILE is now _always_ DIR/.#FILE.
1673 If DIR/.#FILE already exists and is not an Emacs lock file,
1674 Emacs makes no attempt to lock DIR/FILE. (Previously, it fell back to
1675 numbered lock files DIR/.#FILE.0...).
1676 On file systems that do not support symbolic links, the lock is now a
1677 regular file with contents being what would have been in the symlink.
1679 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1682 *** The package descriptor and name of global variables, constants,
1683 and functions should be separated by two hyphens if the symbol is not
1684 meant to be used by other packages.
1687 * Changes in Emacs 24.4 on Non-Free Operating Systems
1690 ** The procedure for building Emacs on MS-Windows has changed.
1691 It is now built by running the same configure script as on all other
1692 platforms. This requires the MSYS environment and MinGW development
1693 tools. See the updated instructions in nt/INSTALL for details.
1695 Using the Posix configure script and Makefile's also means a change in
1696 the directory structure of the Emacs installation on Windows. It is
1697 now the same as on GNU and Unix systems. In particular, the auxiliary
1698 programs, such as cmdproxy.exe and hexl.exe, are in
1699 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1700 version), version-independent site-lisp is in share/emacs/site-lisp,
1701 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1702 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1703 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1704 directories and will find the files in there automatically; there's no
1705 need to set any variables due to this change.)
1708 ** Emacs on Windows 2000 and later can now access files and directories
1709 whose names cannot be encoded in the current system codepage.
1711 The new variable `w32-unicode-filenames' controls this feature: if it
1712 is t, Emacs uses Unicode APIs to pass file names to system calls,
1713 which lifts the limitation of file names to the current locale.
1716 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1717 The backtrace is written to the 'emacs_backtrace.txt' file in the
1718 directory where Emacs was running.
1721 ** The variable `buffer-file-type' is no longer supported.
1722 Setting it has no effect, and %t in the mode-line format is ignored.
1723 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1724 modifying it has no effect.
1727 ** Lock files now work on MS-Windows.
1728 This helps to prevent losing your edits if the same file is being
1729 edited in another Emacs session or by another user. See the node
1730 "Interlocking" in the Emacs User Manual for the details. To disable
1731 file locking, customize `create-lockfiles' to nil.
1734 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1735 To use the old font backend, use the following on the command line:
1736 % defaults write org.gnu.Emacs FontBackend ns
1737 GNUstep and Mac OS X 10.4 use the old font backend.
1740 ** Improved fullscreen support on Mac OS X 10.7 and newer, where the
1741 default fullscreen method is now "native" fullscreen. To use the
1742 old style fullscreen, customize `ns-use-native-fullscreen' to nil.
1745 ** On Mac OS X 10.7 and newer, Emacs can use sRGB colorspace, and does so
1746 by default. Customize `ns-use-srgb-colorspace' to go back to the old method.
1747 Note that this does not apply to images.
1750 * Installation Changes in Emacs 24.3
1752 ** The default X toolkit is now Gtk+ version 3.
1753 If you don't pass `--with-x-toolkit' to configure, or if you use
1754 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1755 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1756 You can explicitly require a specific version by passing
1757 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1759 ** New configure option `--enable-link-time-optimization', to utilize
1760 an appropriate feature provided by GCC since version 4.5.0.
1762 ** New configure option `--without-all' to disable most of the optional
1763 features (image support, etc.) that are normally enabled by default.
1765 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1766 Emacs). If building with GCC, this enables compile-time checks that
1767 warn/give errors about possibly-questionable C code. On a recent GNU
1768 system there should be no warnings; on older and on non-GNU systems
1769 the results may be useful to developers.
1771 ** The configure option `--enable-use-lisp-union-type' has been
1772 renamed to `--enable-check-lisp-object-type', as the resulting
1773 Lisp_Object type no longer uses a union to implement the compile time
1774 check that this option enables.
1776 ** The configure option `--disable-maintainer-mode' has been removed,
1777 as it was confusingly-named and rarely useful.
1779 ** The configure options `--program-prefix', `--program-suffix', and
1780 `--program-transform-name' apply to more than just the installed
1781 binaries. Now they also affect the man pages, icons, and the
1782 etc/emacs.desktop file; but not the info pages, since this would break
1783 links between the various manuals.
1785 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1786 overwriting "emacs" in the installation bin/ directory with a link
1789 ** Emacs uses libtinfo in preference to libncurses, if available.
1791 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1792 /usr/pkg/lib to the linker search path. You must add them yourself if
1795 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1796 (from the bin and libexec directories, respectively). The former is
1797 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1800 * Startup Changes in Emacs 24.3
1802 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1803 lisp/ directory. There should not be any there anyway. If you have
1804 been adding them there, put them somewhere else; e.g., site-lisp.
1806 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1809 * Changes in Emacs 24.3
1813 *** `C-h f' (`describe-function') can now perform autoloading.
1814 When this command is called for an autoloaded function whose docstring
1815 contains a key substitution construct, that function's library is
1816 automatically loaded, so that the documentation can be shown
1817 correctly. To disable this, set `help-enable-auto-load' to nil.
1819 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1820 even after their associated libraries have been loaded (and the
1821 autoloads have been redefined as functions).
1825 *** Images displayed via ImageMagick now support transparency and the
1826 :background image specification property.
1828 *** When available, ImageMagick support is automatically enabled.
1829 It is no longer necessary to call `imagemagick-register-types'
1830 explicitly to install ImageMagick image types; that function is called
1831 automatically at startup, or when customizing an imagemagick- option.
1833 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1834 ImageMagick to view images. (You must call `imagemagick-register-types'
1835 afterwards if you do not use customize to change this.)
1837 *** The new variable `imagemagick-enabled-types' also affects which
1838 ImageMagick types are treated as images. The function
1839 `imagemagick-filter-types' returns the list of types that will be
1844 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1845 next and previous path separator, respectively.
1847 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1848 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1849 non-nil before enabling the mode.
1853 *** New option `mode-line-default-help-echo' specifies the help text
1854 (shown in a tooltip or in the echo area) for any part of the mode line
1855 that does not have its own specialized help text.
1857 *** You can now click mouse-3 in the coding system indicator to invoke
1858 `set-buffer-file-coding-system'.
1860 ** Server and client
1862 *** emacsclient now obeys string values for `initial-buffer-choice',
1863 if it is told to open a new frame without specifying any file to visit
1864 or expression to evaluate.
1866 *** New option `server-auth-key' specifies a shared server key.
1868 ** Emacs now generates backtraces on fatal errors.
1869 On encountering a fatal error, Emacs now outputs a textual description
1870 of the fatal signal, and a short backtrace on platforms like glibc
1871 that support backtraces.
1873 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1874 This minor mode replaces `toggle-read-only', which is now obsolete.
1876 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1877 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1878 respectively, without exiting from the prompt.
1880 ** In the Package Menu, newly-available packages are listed as "new",
1881 and sorted above the other "available" packages by default.
1883 ** If your Emacs was built from a repository checkout, the new variable
1884 `emacs-bzr-version' contains information about the bzr revision used.
1886 ** New option `create-lockfiles' specifies usage of lockfiles.
1887 It defaults to t. Changing it to nil inhibits the creation of lock
1888 files (use this with caution).
1890 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1891 variables on remote hosts.
1893 ** The entry for PCL-CVS has been removed from the Tools menu.
1894 The PCL-CVS commands are still available via the keyboard.
1896 ** Using "unibyte: t" in Lisp source files is obsolete.
1897 Use "coding: raw-text" instead.
1899 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1900 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1901 The previous binding, introduced in Emacs 24.1, was a mistake, because
1902 `C-c LETTER' bindings are reserved for user customizations.
1904 ** Internationalization
1906 *** New language environment: Persian.
1908 *** New input method `vietnamese-vni'.
1910 ** Nextstep (GNUstep / Mac OS X) port
1912 *** Support for fullscreen and the frame parameter fullscreen.
1914 *** A file dialog is used for open/save operations initiated from the
1918 * Editing Changes in Emacs 24.3
1920 ** Search and Replace
1922 *** Non-regexp Isearch now performs "lax" space matching.
1923 Each sequence of spaces in the supplied search string may match any
1924 sequence of one or more whitespace characters, as specified by the
1925 variable `search-whitespace-regexp'. (This variable is also used by a
1926 similar existing feature for regexp Isearch.)
1928 *** New Isearch command `M-s SPC' toggles lax space matching.
1929 This applies to both ordinary and regexp Isearch.
1931 *** New option `replace-lax-whitespace'.
1932 If non-nil, `query-replace' uses flexible whitespace matching too.
1935 *** Global `M-s _' starts a symbol (identifier) incremental search,
1936 and `M-s _' in Isearch toggles symbol search mode.
1937 `M-s c' in Isearch toggles search case-sensitivity.
1939 ** Navigation commands
1941 *** New binding `M-g c' for `goto-char'.
1943 *** New binding `M-g TAB' for `move-to-column'.
1945 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1946 interactively with no prefix arg. Previously, it moved to column 1.
1948 ** New option `yank-handled-properties' allows processing of text
1949 properties on yanked text, in ways that are more general than just
1950 removing them (as is done by `yank-excluded-properties').
1952 ** New option `delete-trailing-lines' specifies whether
1953 M-x delete-trailing-whitespace should delete trailing lines at the end
1954 of the buffer. It defaults to t.
1956 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1958 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1959 `ucs-insert' is now an obsolete alias for `insert-char'.
1961 ** The `z' key no longer has a binding in most special modes.
1962 It used to be bound to `kill-this-buffer', but `z' is too easy to
1965 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1966 It copies the region-rectangle as the last rectangle kill.
1970 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1972 *** New option `register-separator' specifies the register containing
1973 the text to put between collected texts for use with
1974 M-x append-to-register and M-x prepend-to-register.
1977 * Changes in Specialized Modes and Packages in Emacs 24.3
1979 ** Common Lisp emulation (CL)
1981 *** CL's main entry is now (require 'cl-lib).
1982 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1983 i.e., all its definitions have the "cl-" prefix (and internal definitions
1984 use the "cl--" prefix).
1986 If `cl' provided a feature under the name `foo', then `cl-lib'
1987 provides it under the name `cl-foo' instead; with the exceptions of the
1988 few `cl' definitions that had to use `foo*' to avoid conflicts with
1989 pre-existing Elisp entities. These have been renamed to `cl-foo'
1990 rather than `cl-foo*'.
1992 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1993 provide the old, non-prefixed names. Some exceptions are listed below:
1995 *** `cl-flet' is not like `flet' (which is deprecated).
1996 Instead it obeys the behavior of Common-Lisp's `flet'.
1997 In particular, in cl-flet function definitions are lexically scoped,
1998 whereas in flet the scoping is dynamic.
2000 *** `cl-labels' is slightly different from `labels'.
2001 The difference is that it relies on the `lexical-binding' machinery
2002 (as opposed to the `lexical-let' machinery used previously) to capture
2003 definitions in closures, so such closures will only work if `lexical-binding'
2006 *** `cl-letf' is not exactly like `letf'.
2007 The only difference is in details that relate to some deprecated usage
2008 of `symbol-function' in place forms.
2010 *** `progv' was rewritten to use the `let' machinery.
2011 A side effect is that variables without corresponding values are bound
2012 to nil rather than being made unbound.
2014 *** The following methods of extending `setf' are obsolete
2015 (use features from gv.el instead):
2016 `define-modify-macro' (use `gv-letplace')
2017 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
2018 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
2019 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
2023 *** Changes are now highlighted using the same color scheme as in
2024 modern VCSes. Deletions are displayed in red (new faces
2025 `diff-refine-removed' and `smerge-refined-removed', and new definition
2026 of `diff-removed'), insertions in green (new faces `diff-refine-added'
2027 and `smerge-refined-added', and new definition of `diff-added').
2029 *** The variable `diff-use-changed-face' defines whether to use the
2030 face `diff-changed', or `diff-removed' and `diff-added' to highlight
2031 changes in context diffs.
2033 *** The new command `diff-delete-trailing-whitespace' removes trailing
2034 whitespace introduced by a diff.
2036 ** Ediff now uses the same color scheme as Diff mode.
2040 A new version of python.el, which provides several new features, including:
2041 per-buffer shells, better indentation, Python 3 support, and improved
2042 shell-interaction compatible with iPython (and virtually any other
2045 *** Some user options have been replaced/renamed, including (old -> new):
2046 **** python-indent -> python-indent-offset
2047 **** python-guess-indent -> python-indent-guess-indent-offset
2048 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
2049 **** python-use-skeletons -> python-skeleton-autoinsert
2051 *** Some user options have been removed, including:
2053 **** `python-indent-string-contents': Strings are never indented.
2055 **** `python-honour-comment-indentation':
2056 Comments are always considered as indentation markers.
2058 **** `python-continuation-offset': Indentation is automatically
2059 calculated in a pep8 compliant way depending on the context.
2061 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
2062 Have no direct mapping as the shell interaction is completely different.
2064 **** `python-python-command', `python-jython-command':
2065 Replaced by `python-shell-interpreter'.
2067 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
2068 `python-pdbtrack-minor-mode-string', `python-source-modes':
2071 *** Some commands have been replaced (old -> new):
2072 **** python-insert-class -> python-skeleton-class
2073 **** python-insert-def -> python-skeleton-def
2074 **** python-insert-for -> python-skeleton-for
2075 **** python-insert-if -> python-skeleton-if
2076 **** python-insert-try/except -> python-skeleton-try
2077 **** python-insert-try/finally -> python-skeleton-try
2078 **** python-insert-while -> python-skeleton-while
2079 **** python-find-function -> python-nav-jump-to-defun
2080 **** python-next-statement -> python-nav-forward-sentence
2081 **** python-previous-statement -> python-nav-backward-sentence
2082 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
2083 **** python-end-of-defun-function -> python-nav-end-of-defun
2084 **** python-send-buffer -> python-shell-send-buffer
2085 **** python-send-defun -> python-shell-send-defun
2086 **** python-send-region -> python-shell-send-region
2087 **** python-send-region-and-go -> emulate with python-shell-send-region
2088 and python-shell-switch-to-shell
2089 **** python-send-string -> python-shell-send-string
2090 **** python-switch-to-python -> python-shell-switch-to-shell
2091 **** python-describe-symbol -> python-eldoc-at-point
2095 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
2097 *** The D-Bus object manager interface is implemented.
2099 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
2100 if their value does not fit into Emacs's integer range.
2102 *** The function `dbus-call-method' is now non-blocking.
2103 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
2105 *** Signals can also be sent as unicast messages.
2107 *** The argument list of `dbus-register-signal' has been extended,
2108 according to the new match rule types of D-Bus.
2110 *** `dbus-init-bus' supports private connections.
2112 *** There is a new function `dbus-setenv'.
2114 ** `desktop-path' no longer includes the "." directory.
2115 Desktop files are now located in ~/.emacs.d by default.
2119 *** `dired-do-async-shell-command' executes each file sequentially
2120 if the command ends in `;' (when operating on multiple files).
2121 Otherwise, it executes the command on each file in parallel.
2123 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
2124 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
2127 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
2128 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
2129 mark/unmark/flag all files in the active region.
2131 *** The minibuffer default for `=' (`dired-diff') has changed.
2132 It is now the backup file for the file at point, if one exists.
2133 In Transient Mark mode the default is the file at the active mark.
2135 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
2136 The global binding for `M-=', `count-words-region' is in effect.
2140 *** New module "notifications", which can send a notification when you
2141 receive a private message or your nickname is mentioned.
2143 *** ERC will look up server/channel names via auth-source and use any
2146 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
2147 only applies to messages sent by lurkers.
2149 ** reStructuredText mode
2151 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
2152 fontification, comment handling, and customization have all been revised
2155 *** Support for `imenu' and `which-function-mode'.
2157 *** The reStructuredText syntax is more closely covered.
2158 Sphinx support has been improved.
2160 *** `rst-insert-list' inserts new list or continues existing lists.
2162 *** A negative prefix argument always works for `rst-adjust'.
2164 *** The window configuration is reset after displaying a TOC.
2166 *** The constant `rst-version' describes the rst.el package version.
2170 *** Support for percent literals and recognition of regular expressions
2171 in method calls without parentheses with more methods, including Cucumber
2174 *** Improved syntax highlighting and indentation.
2176 *** New command `ruby-toggle-block', bound to `C-c {'.
2178 *** Some non-standard keybindings/commands have been removed:
2180 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
2182 **** `ruby-mark-defun'; use `mark-defun'.
2184 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
2185 appropriate settings for the variables `beginning-of-defun-function'
2186 and `end-of-defun-function'.
2188 **** Non-standard keybindings for `backward-kill-word', `comment-region',
2189 `reindent-then-newline-and-indent' and `newline' have been removed.
2191 ** Shell Script mode
2193 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
2195 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
2197 *** `sh-use-smie' lets you choose a new indentation and navigation code.
2201 *** The free software compiler GHDL is supported (and now the default).
2203 *** Support for the VHDL-AMS packages has been added/updated.
2205 *** Updated to the 2002 revision of the VHDL standard.
2207 *** Accepts \r and \f as whitespace.
2211 *** The faces used by Apropos are now directly customizable.
2212 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
2213 see the `apropos' Custom group for details.
2215 *** The old options whose values specified faces to use have been removed
2216 (i.e. `apropos-symbol-face', `apropos-keybinding-face', `apropos-label-face',
2217 `apropos-match-face' and `apropos-property-face'.).
2221 *** This package has been rewritten to use Tabulated List mode.
2223 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
2224 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
2228 *** Algebraic simplification mode is now the default.
2229 To restrict to the limited simplifications given by the former
2230 default simplification mode, use `m I'.
2234 *** You can customize the header text that appears above each calendar month.
2235 See the variable `calendar-month-header'.
2237 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
2239 *** The calendars produced by cal-html include holidays.
2240 Customize `cal-html-holidays' to change this.
2244 *** The major modes from the parser generators "Bovine" and "Wisent"
2245 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
2246 are in `auto-mode-alist', and the corresponding manuals are included.
2250 **** Menu support for the "Configuration" feature. This allows users to
2251 choose the active configuration (such as debug or install) from the menu.
2253 **** New command `ede-set' to interactively set project-local variables.
2255 **** Support for compiling, debugging, and running in "generic" projects.
2257 **** Autoconf editing support for M4 macros with complex arguments.
2259 **** Compilation support for the "linux" project type.
2261 **** "simple" projects have been removed; use "generic" projects instead.
2265 **** Support for parsing #include statements inside a namespace in C/C++.
2267 **** Improved support for 'extern "C"' declarations in C/C++.
2269 **** The ability to ignore more common special C/C++ preprocessor symbols,
2270 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
2271 If available, include cdefs.h as an additional source of preprocessor symbols.
2273 **** Improved C/C++ function pointer parsing.
2275 **** In Python, support for converting imports to include file names.
2277 **** Ability to dynamically determine the Python load path.
2279 **** Support for the Python 'WITH' and 'AT' keywords.
2281 **** Improved tooltip completion.
2285 **** The SRecode manual is now included.
2287 **** Tag generation supports constructor/destructor settings and system
2288 include differentiation.
2290 **** Addition of 'Framework' support: Frameworks are specified when a
2291 particular kind of library (such as Android) is needed in a common language
2294 **** Support for nested templates and let variables override based on priority.
2296 **** Support for merging tables from multiple related modes, such as
2297 default -> c++ -> arduino.
2299 ** Compile has a new option `compilation-always-kill'.
2303 *** `custom-reset-button-menu' now defaults to t.
2305 *** Non-option variables are never matched in `customize-apropos' and
2306 `customize-apropos-options' (i.e., the prefix argument does nothing for
2307 these commands now).
2311 *** The variables `term-default-fg-color' and `term-default-bg-color'
2312 are now deprecated in favor of the customizable face `term'.
2314 *** You can customize how to display ANSI terminal colors and styles
2315 by customizing the corresponding `term-color-<COLOR>',
2316 `term-color-underline' and `term-color-bold' faces.
2320 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
2322 *** Remote processes are now also supported on remote MS-Windows hosts.
2326 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
2327 Previously, this slot stored semicolon-separated attribute-value pairs
2328 appended to some imap URLs, but this is not compatible with RFC 3986.
2329 So now the `filename' slot stores the entire path and query components,
2330 and the `attributes' slot is always nil.
2332 *** New function `url-encode-url' for encoding a URI string.
2333 The `url-retrieve' function now uses this to encode its URL argument,
2334 in case that is not properly encoded.
2336 ** notifications.el supports now version 1.2 of the Notifications API.
2337 The function `notifications-get-capabilities' returns the supported
2340 ** Flymake uses fringe bitmaps to indicate errors and warnings.
2341 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
2342 `flymake-warning-bitmap'.
2344 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
2345 specifying URL types that should be converted to remote file names at
2346 the FFAP prompt. The default is now '("ftp").
2348 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
2349 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
2351 ** New option `mouse-avoidance-banish-position' specifies where the
2352 `banish' mouse avoidance setting moves the mouse.
2354 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
2355 closing brackets to be aligned with the line of the opening bracket.
2357 ** In Proced mode, new command `proced-renice' renices marked processes.
2359 ** New option `async-shell-command-buffer' specifies the buffer to use
2360 for a new asynchronous `shell-command' when the default output buffer
2361 `*Async Shell Command*' is already in use.
2363 ** SQL mode has a new option `sql-db2-escape-newlines'.
2364 If non-nil, newlines sent to the command interpreter will be escaped
2365 by a backslash. The default does not escape the newlines and assumes
2366 that the sql statement will be terminated by a semicolon.
2368 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
2369 (and modes that derive from it), sorts the column at point, or the Nth
2370 column if a numeric prefix argument is given.
2372 ** `which-func-modes' now defaults to t, so Which Function mode, when
2373 enabled, applies to all applicable major modes.
2375 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
2378 ** Follow mode no longer works by using advice.
2379 The option `follow-intercept-processes' has been removed.
2381 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
2383 ** Hooks renamed to avoid obsolete "-hooks" suffix:
2384 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
2385 *** semantic-change-hooks -> semantic-change-functions
2386 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
2387 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
2388 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
2389 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
2390 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
2391 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
2392 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
2393 *** rcirc-activity-hooks -> rcirc-activity-functions
2394 *** rcirc-print-hooks -> rcirc-print-functions
2395 *** dbus-event-error-hooks -> dbus-event-error-functions
2396 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
2397 *** checkdoc-style-hooks -> checkdoc-style-functions
2398 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2399 *** archive-extract-hooks -> archive-extract-hook
2400 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2401 *** hfy-post-html-hooks -> hfy-post-html-hook
2402 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2403 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2404 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2405 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2407 ** Obsolete packages
2410 In most cases, assoc+member+push+delq work just as well.
2411 And in any case it's just a terrible package: ugly semantics, terrible
2412 inefficiency, and not namespace-clean.
2421 * Incompatible Lisp Changes in Emacs 24.3
2423 ** Docstrings starting with `*' no longer indicate user options.
2424 Only variables defined using `defcustom' are considered user options.
2425 The function `user-variable-p' is now an obsolete alias for
2426 `custom-variable-p'.
2428 ** The return values of `defalias', `defun' and `defmacro' have changed,
2429 and are now undefined. For backwards compatibility, `defun' and
2430 `defmacro' currently return the name of the newly defined
2431 function/macro, but this should not be relied upon.
2433 ** `random' by default now returns a different random sequence in
2434 every Emacs run. Use `(random S)', where S is a string, to set the
2435 random seed to a value based on S, in order to get a repeatable
2436 sequence in later calls.
2438 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2439 that substring is inserted literally even if the LITERAL arg is
2440 non-nil, instead of causing an error to be signaled.
2442 ** `select-window' now always makes the window's buffer current.
2443 It does so even if the window was selected before.
2445 ** The function `x-select-font' can return a font spec, instead of a
2446 font name as a string. Whether it returns a font spec or a font name
2447 depends on the graphical library.
2449 ** `face-spec-set' no longer sets frame-specific attributes when the
2450 third argument is a frame (that usage was obsolete since Emacs 22.2).
2452 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2454 ** The CL package's `get-setf-method' function no longer exists.
2455 Generalized variables are now part of core Emacs Lisp, and implemented
2456 differently to the way cl.el used to do it. It is not possible to
2457 define a compatible replacement for `get-setf-method'. See the file
2458 gv.el for internal details of the new implementation.
2460 ** The arguments of `dbus-register-signal' are no longer just strings,
2461 but keywords or keyword-string pairs. The old argument list will
2462 still be supported for Emacs 24.x.
2464 ** Miscellaneous name changes
2465 Some Lisp symbols have been renamed to correct their spelling,
2466 or to be more consistent with standard Emacs terminology.
2468 *** Renamed functions
2469 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2470 **** inactivate-input-method -> deactivate-input-method
2471 **** quail-inactivate -> quail-deactivate
2472 **** robin-inactivate -> robin-deactivate
2473 **** viper-inactivate-input-method -> viper-deactivate-input-method
2474 **** viper-inactivate-input-method-action ->
2475 viper-deactivate-input-method-action
2476 **** ucs-input-inactivate -> ucs-input-deactivate
2479 The old hooks are still supported for backward compatibility, but they
2480 are deprecated and will be removed eventually.
2481 **** input-method-inactivate-hook -> input-method-deactivate-hook
2482 **** robin-inactivate-hook -> robin-deactivate-hook
2483 **** quail-inactivate-hook -> quail-deactivate-hook
2485 *** Renamed variables
2486 **** follow-deactive-menu -> follow-inactive-menu
2487 **** inactivate-current-input-method-function ->
2488 deactivate-current-input-method-function
2490 ** Some obsolete functions, variables, and faces have been removed:
2491 *** `last-input-char', `last-command-char', `unread-command-char'
2492 *** `facemenu-unlisted-faces'
2493 *** `rmail-decode-mime-charset'
2494 *** `iswitchb-read-buffer'
2495 *** `sc-version', `sc-submit-bug-report'
2496 *** `set-char-table-default'
2497 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2498 *** `compile-internal'
2500 *** `mode-line-inverse-video'
2501 *** `follow-mode-off-hook'
2502 *** `cvs-commit-buffer-require-final-newline'
2503 (use `log-edit-require-final-newline' instead)
2504 *** `cvs-changelog-full-paragraphs'
2505 (use `log-edit-changelog-full-paragraphs' instead)
2506 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2507 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2508 *** `vc-master-templates' (use `vc-handled-backends' instead)
2509 *** `vc-checkout-carefully'
2512 * Lisp Changes in Emacs 24.3
2514 ** CL-style generalized variables are now in core Elisp.
2515 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2516 You can define your own generalized variables using `gv-define-simple-setter',
2517 `gv-define-setter', etc.
2519 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2520 This can significantly speed up execution of non-byte-compiled code,
2521 but can also bump into previously unnoticed cyclic dependencies.
2522 These are generally harmless: they will simply cause the macro calls
2523 to be left for later expansion (as before), but will result in a
2524 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2525 You may wish to restructure your code so this does not happen.
2527 ** New sampling-based Elisp profiler.
2528 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2529 When finished, use M-x profiler-stop. The sampling rate can be based on
2530 CPU time or memory allocations.
2532 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2533 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2535 ** New macros `setq-local' and `defvar-local'.
2537 ** Face underlining can now use a wave.
2539 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2540 of `read-regexp' accepts a string ending with a colon and space, and its
2541 second argument DEFAULTS can be a list of strings accessible via `M-n'
2542 in the minibuffer ahead of other hard-coded useful regexp-related values.
2543 More commands use `read-regexp' now to read their regexp arguments.
2547 *** New function `completion-table-with-quoting' to handle completion
2548 in the presence of quoting, such as file completion in shell buffers.
2550 *** New function `completion-table-subvert' to use an existing completion
2551 table, but with a different prefix.
2555 *** New error type and new function `user-error'.
2556 These do not trigger the debugger.
2558 *** New option `debugger-bury-or-kill', saying what to do with the
2559 debugger buffer when exiting debug.
2561 *** Set `debug-on-message' to enter the debugger when a certain
2562 message is displayed in the echo area. This can be useful when trying
2563 to work out which code is doing something.
2565 *** New var `inhibit-debugger', automatically set to prevent accidental
2566 recursive invocations.
2570 *** New command `fit-frame-to-buffer' adjusts the frame height to
2573 *** The command `fit-window-to-buffer' can adjust the frame height
2574 if the new option `fit-frame-to-buffer' is non-nil.
2576 *** New macro `with-temp-buffer-window', similar to
2577 `with-output-to-temp-buffer'.
2579 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2582 *** New option `switch-to-buffer-preserve-window-point' to restore a
2583 window's point when switching buffers.
2585 *** New display action alist entries `window-height' and `window-width'
2586 specify the size of new windows created by `display-buffer'.
2588 *** New display action alist entry `pop-up-frame-parameters', if
2589 non-nil, specifies frame parameters to give any newly-created frame.
2591 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2592 tells display action functions to avoid changing which frame is
2595 *** New display action alist entry `previous-window', if non-nil,
2596 specifies window to reuse in `display-buffer-in-previous-window'.
2598 *** New display action functions `display-buffer-below-selected',
2599 and `display-buffer-in-previous-window'.
2601 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2602 now accept a third argument to avoid choosing the selected window.
2604 *** Additional values recognized for option `window-combination-limit'.
2606 *** The following variables are obsolete, as they can be replaced by
2607 appropriate entries in the `display-buffer-alist' function introduced
2609 **** `dired-shrink-to-fit'
2610 **** `display-buffer-reuse-frames'
2611 **** `display-buffer-function'
2612 **** `special-display-buffer-names'
2613 **** `special-display-frame-alist'
2614 **** `special-display-function'
2615 **** `special-display-regexps'
2619 *** `current-time-string' no longer requires that its argument's year
2620 must be in the range 1000..9999. It now works with any year supported
2621 by the underlying C implementation.
2623 *** `current-time' now returns extended-format time stamps
2624 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2625 PSEC is typically a multiple of 1000 on current machines. Other
2626 functions that use this format, such as `file-attributes' and
2627 `format-time-string', have been changed accordingly. Old-format time
2628 stamps are still accepted.
2630 *** The format of timers in `timer-list' and `timer-idle-list' is now
2631 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2632 The PSECS slot is new, and uses picosecond resolution. It can be
2633 accessed via the new `timer--psecs' accessor.
2635 *** Last-modified time stamps in undo lists now are of the form
2636 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2640 *** Improved security when handling persistent objects:
2642 **** `eieio-persistent-read' now features optional arguments for specifying
2643 the class to load, as well as a flag stating whether subclasses are allowed;
2644 if provided, other classes will be rejected by the reader. For
2645 compatibility with existing code, if the class is omitted only a
2648 **** New specialized reader for pulling in classes and signaling errors
2649 without evaluation of suspicious code.
2651 **** All slots that contain objects must have a :type. Slots with lists
2652 of objects must use a new type predicate for a list of an object type.
2654 *** Support for `find-function' and similar utilities, through the addition
2655 of filename support to generated symbols.
2657 ** Floating point functions now always return special values like NaN,
2658 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2659 Previously, they returned NaNs on some platforms but signaled errors
2660 on others. The affected functions are acos, asin, tan, exp, expt,
2661 log, log10, sqrt, and mod.
2663 ** New fringe bitmap `exclamation-mark'.
2665 ** Miscellaneous changes to special forms and macros
2667 *** `defun' and `defmacro' are now macros rather than special forms.
2669 *** `kbd' is now a function rather than a macro.
2671 ** Miscellaneous new functions
2673 *** `set-temporary-overlay-map' sets up a temporary keymap that
2674 takes precedence over most other maps for a short while (normally one key).
2676 *** `autoloadp' tests if its argument is an autoloaded object.
2678 *** `autoload-do-load' performs the autoloading operation.
2680 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2682 *** `file-name-base' returns a file name sans directory and extension.
2684 *** `function-get' fetches a function property, following aliases.
2686 *** `posnp' tests if an object is a `posn'.
2688 *** `system-users' returns the user names on the system.
2690 *** `system-groups' returns the group names on the system.
2692 *** `tty-top-frame' returns the topmost frame of a text terminal.
2694 ** The following functions and variables are obsolete:
2695 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2696 *** `buffer-has-markers-at'
2697 *** `macro-declaration-function' (use `macro-declarations-alist')
2698 *** `window-system-version' (provides no useful information)
2699 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2700 *** `query-replace-interactive'
2701 *** `font-list-limit' (has had no effect since Emacs < 23)
2704 * Changes in Emacs 24.3 on Non-Free Operating Systems
2706 ** Cygwin builds can use the native MS Windows user interface.
2707 Pass `--with-w32' to configure. The default remains the X11 interface.
2709 ** Two new functions are available in Cygwin builds:
2710 `cygwin-convert-file-name-from-windows' and
2711 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2712 code to access the Cygwin file-name mapping machinery to convert
2713 between Cygwin and Windows-native file and directory names.
2715 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2716 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2717 `mouse-autoselect-window'.
2719 ** On MS Windows Vista and later Emacs now supports symbolic links.
2721 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2722 support for libxml2, even if its presence is detected.
2724 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2726 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2727 directories to the search path. You must add them yourself if you want them.
2730 * Changes in Emacs 24.2
2732 ** This is mainly a bug-fix release.
2735 * Installation Changes in Emacs 24.1
2737 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2738 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2739 also depend on Gtk+. You can disable them with --without-rsvg and
2742 ** Emacs can be compiled with GnuTLS support.
2743 This happens by default if a suitably recent version of the library is
2744 found at build time. To prevent this, use the configure option
2745 `--without-gnutls'. See below for GnuTLS features.
2747 ** Emacs can be compiled with SELinux support.
2748 This happens by default if a suitably recent version of the library is
2749 found at build time. To prevent this, use the configure option
2750 `--without-selinux'. See below for SELinux features.
2752 ** Emacs can be compiled with ImageMagick support.
2753 This happens by default if a suitably recent version of the library is
2754 found at build time. To prevent this, use the configure option
2755 `--without-imagemagick'. See below for ImageMagick features.
2756 This feature is not available for the Nextstep or MS ports.
2758 ** Emacs can be compiled with libxml2 support.
2759 This happens by default if a suitably recent version of the library is
2760 found at build time. To prevent this, use the configure option
2761 `--without-xml2'. See below for libxml2 features.
2763 ** By default, the installed Info and man pages are compressed.
2764 You can disable this by configuring --without-compress-info.
2766 ** New configure option --with-wide-int.
2767 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2768 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2771 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2772 These provide no new functionality, they just remove the need to edit
2773 lib-src/Makefile by hand in order to use the associated features.
2775 ** New configure option --enable-use-lisp-union-type.
2776 This is only useful for Emacs developers to debug certain types of bugs.
2777 This is not a new feature; only the configure flag is new.
2779 ** The standalone programs digest-doc and sorted-doc are removed.
2780 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2782 ** The standalone program `fakemail' is removed.
2783 If you need it, feedmail.el provides a superset of the functionality.
2786 * Startup Changes in Emacs 24.1
2788 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2789 command line arguments, and the EMACS_UNIBYTE environment variable, no
2790 longer have any effect. (They were declared obsolete in Emacs 23.)
2792 ** New command line option `--no-site-lisp' removes site-lisp directories
2793 from load-path. -Q now implies this. This option does not affect the
2794 EMACSLOADPATH environment variable (and hence has no effect for
2798 * Changes in Emacs 24.1
2802 *** Many packages now use the `completion-at-point' command,
2803 rather than implementing separate completion commands.
2805 *** `completion-at-point' now handles tags and semantic completion.
2807 *** Completion in a non-minibuffer now tries to detect the end of completion
2808 and pops down the *Completions* buffer accordingly.
2810 *** New option `completion-cycle-threshold' allows completion cycling.
2812 *** New option `completion-category-overrides' for overriding the
2813 default completion style in certain circumstances.
2815 *** New completion style `substring'.
2817 *** Completion of buffer names uses `substring' completion by default.
2819 *** The option `widget-complete-field' has been removed.
2823 *** The first time you try sending mail, Emacs asks for a mail method.
2824 This is implemented by a new default for `send-mail-function', which
2825 is `sendmail-query-once'. This offers to use the smtpmail package, or
2826 to use the old defaults relying on external mail facilities
2827 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2828 `mailclient-send-it' on Windows).
2830 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2831 transfers the report to your desktop's preferred mail client, if there
2832 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2835 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2836 and Mail mode changes
2838 ** Emacs server and client changes
2840 *** New option `server-port' specifies the port for TCP Emacs servers.
2842 *** New emacsclient argument -q/--quiet suppresses some status messages.
2844 *** New emacsclient argument --frame-parameters specifies the frame
2845 parameters of any newly-created graphical frame.
2847 *** If emacsclient shuts down due to Emacs signaling an error,
2848 its exit status is 1.
2850 *** New emacsclient argument --parent-id ID.
2851 This opens a client frame in parent X window ID, via XEmbed, similar
2852 to the --parent-id argument to Emacs.
2854 ** Internationalization changes
2856 *** Emacs now supports display and editing of bidirectional text.
2857 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2858 displayed in the correct visual order as expected by users of those
2859 scripts. The display reordering is a "full bidirectionality" class
2860 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2861 with no RTL text should look exactly the same as before.
2863 **** New buffer-local variable `bidi-display-reordering'.
2864 To disable display reordering in a buffer, change this to nil.
2866 **** New buffer-local variable `bidi-paragraph-direction'.
2867 If nil (the default), Emacs determines the base direction of each
2868 paragraph from its text, as specified by the UBA. Setting the value
2869 to `right-to-left' or `left-to-right' forces a base direction on each
2872 Paragraphs with right-to-left base direction are displayed starting at
2873 the right window edge.
2875 *** Enhanced support for characters with no glyphs in available fonts,
2876 or, on text terminals, characters that cannot be encoded by the
2877 terminal coding system. The new option `glyphless-char-display-control'
2878 specifies how to display them: as a hexadecimal code in a box, a thin
2879 1-pixel space, an empty box, etc.
2881 *** New input methods for Farsi and Bulgarian
2882 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2884 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2885 (U+2010 and U+2011).
2887 *** New Hebrew translation of the Emacs Tutorial.
2888 Type `C-u C-h t' to choose it in case your language setup doesn't
2889 automatically select it.
2891 ** An Emacs Lisp package manager is now included.
2892 This is a convenient way to download and install additional packages,
2893 from a package repository at http://elpa.gnu.org.
2895 *** M-x list-packages shows a list of packages, which can be
2896 selected for installation.
2898 *** New command `describe-package', bound to `C-h P'.
2900 *** By default, all installed packages are loaded automatically when
2901 Emacs starts up. To disable this, set `package-enable-at-startup' to
2902 nil. To specify the packages to load, customize `package-load-list'.
2904 ** Custom theme changes
2906 *** New command `M-x customize-themes', which provides a convenient
2907 interface for enabling and disabling Custom themes.
2909 *** New option `custom-theme-load-path' is the load path for themes.
2910 Emacs no longer looks for Custom themes in `load-path'. The default
2911 value of `custom-theme-load-path' says to look for themes in
2912 `custom-theme-directory', followed by a subdirectory of
2913 `data-directory' named "themes/", which contains a small selection of
2914 built-in Custom themes.
2916 *** New option `custom-safe-themes' records known-safe theme files.
2917 If a theme is not in this list, Emacs queries before loading it, and
2918 offers to save the theme to `custom-safe-themes' automatically. By
2919 default, all themes included in Emacs are treated as safe.
2921 ** Improved GTK integration
2923 *** GTK scroll-bars are now placed on the right by default.
2924 The function `set-scroll-bar-mode' can change this.
2926 *** GTK tool bars can have just text, just images or images and text.
2927 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2928 the default is taken from desktop settings.
2930 *** GTK tool bars can be placed on any edge of the frame.
2931 The frame-parameter tool-bar-position controls this. It takes the
2932 values top, left, right or bottom. The Options => Show/Hide menu has
2935 *** The default colors for selected text (the `region' face) are taken
2936 from the GTK theme when Emacs is built with GTK.
2938 *** Emacs uses GTK tooltips by default if built with GTK.
2939 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2941 ** Graphical interface changes
2943 *** On graphical displays, the mode-line no longer ends in dashes.
2944 Also, the first dash (which does not indicate anything) is just
2945 displayed as a space.
2947 *** `menu-bar-select-buffer-function' lets you choose another operation
2948 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2950 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2951 built with Xft. These fonts can be set via X resources, for example:
2952 Emacs.pane.menubar.font: Courier-12
2956 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2957 or if it receives a SIGINT signal in batch mode.
2959 *** `kill-emacs-hook' is now also run in batch mode.
2960 Third-party code which adds to `kill-emacs-hook' should check if they
2961 do the right thing in batch mode.
2963 ** Scrolling changes
2965 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2966 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2967 of buffer at first key-press (instead they move to top/bottom of buffer)
2968 when `scroll-error-top-bottom' is non-nil.
2970 *** New option `scroll-error-top-bottom' (see above).
2972 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2973 scroll a line instead of full screen.
2975 *** New property `scroll-command' should be set on a command's symbol to
2976 define it as a scroll command affected by `scroll-preserve-screen-position'.
2978 *** If you customize `scroll-conservatively' to a value greater than 100,
2979 Emacs will never recenter point in the window when it scrolls due to
2980 cursor motion commands or commands that move point (e.f., `M-g M-g').
2981 Previously, you needed to use `most-positive-fixnum' as the value of
2982 `scroll-conservatively' to achieve the same effect.
2984 *** "Aggressive" scrolling now honors the scroll margins.
2985 If you customize `scroll-up-aggressively' or
2986 `scroll-down-aggressively' and move point off the window, Emacs now
2987 scrolls the window so as to avoid positioning point inside the scroll
2990 ** Basic SELinux support has been added.
2991 This requires Emacs to be linked with libselinux at build time.
2993 *** Emacs preserves the SELinux file context when backing up.
2994 Also, the function `copy-file' has an extra optional argument for
2995 preserving SELinux context, and the return value of `backup-buffer'
2996 now includes the SELinux context.
2998 *** New functions `file-selinux-context' and `set-file-selinux-context'
2999 get and set the SELinux context of a file.
3003 *** `delete-by-moving-to-trash' now only affects commands that specify
3004 trashing. This avoids inadvertently trashing temporary files.
3006 *** Calling `delete-file' or `delete-directory' with a prefix argument
3007 now forces true deletion, regardless of `delete-by-moving-to-trash'.
3009 ** File- and directory-local variable changes
3011 *** You can stop directory local vars from applying to subdirectories.
3012 Add an element (subdirs . nil) to the alist portion of any variables
3013 settings to indicate that the section should not apply to
3016 *** Directory local variables can apply to some file-less buffers.
3017 Affected modes include dired, vc-dir, and log-edit. For example,
3018 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
3019 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
3020 `hack-dir-local-variables-non-file-buffer' to support this.
3022 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
3023 Instead, use "eval: (minor-mode 1)".
3025 *** The variable `inhibit-first-line-modes-regexps' has been renamed
3026 to `inhibit-local-variables-regexps'. As the name suggests, it now
3027 applies to ALL file local variables, not just -*- lines. The
3028 associated `inhibit-first-line-modes-suffixes' has been renamed in the
3033 *** The `quit-window' command now restores the last buffer displayed
3034 in the quitted window.
3036 *** Resizing an Emacs frame now preserves proportional window sizes,
3037 modulo restrictions like window minimum sizes and fixed-size windows.
3039 *** The behavior of `display-buffer' is now customizable in detail.
3041 **** New option `display-buffer-base-action' specifies a list of
3042 user-determined display "actions" (functions and optional arguments
3043 for choosing the displaying window).
3045 This takes precedence over the default display action, which is
3046 specified by `display-buffer-fallback-action'.
3048 **** New option `display-buffer-alist' maps buffer name regexps to
3049 display actions, taking precedence over `display-buffer-base-action'.
3051 *** New option `window-combination-limit'.
3052 The new option `window-combination-limit' allows to return the space
3053 obtained for resizing or creating a window more reliably to the window
3054 from which such space was obtained.
3056 *** New option `window-combination-resize'.
3057 The new option `window-combination-resize' allows to split a window that
3058 otherwise cannot be split because it's too small by stealing space from
3059 other windows in the same combination. Subsequent resizing or deletion
3060 of the window will resize all windows in the same combination as well.
3062 *** New option `frame-auto-hide-function' lets you choose between
3063 iconifying or deleting a frame when burying a buffer in a dedicated
3064 frame, or quitting a window showing a buffer in a frame of its own.
3066 *** New commands `maximize-window' and `minimize-window'.
3067 These maximize and minimize the size of a window within its frame.
3069 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
3070 These functions allow to navigate through the live buffers that have
3071 been shown in a specific window.
3073 ** Minibuffer changes
3075 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
3076 This is handy for minibuffer-only frames, and is also used for the feature
3077 where mouse-1 pops up *Messages*"', which can now easily be changed.
3079 *** Minibuffers set `truncate-lines' to nil.
3080 If you want to change the value to something else, you could use
3081 for example `minibuffer-setup-hook'.
3083 ** `auto-mode-case-fold' is now enabled by default.
3085 ** `backup-by-copying-when-mismatch' now defaults to t.
3087 ** New basic faces `error', `warning', `success'.
3088 These are used to highlight text indicating failure, caution or
3089 successful operation.
3091 ** New option `list-colors-sort' defines the color sort order
3092 for `list-colors-display'.
3094 ** The variable `focus-follows-mouse' now always defaults to nil.
3097 * Editing Changes in Emacs 24.1
3101 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
3102 `isearch-yank-line'.
3104 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
3105 `isearch-yank-kill'.
3107 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
3109 ** New commands `count-words-region' and `count-words'.
3111 *** M-= is bound to `count-words-region', not `count-lines-region'.
3112 The `count-words-region' command, when called interactively, reports
3113 the number of lines, words, and characters in the region. It is a
3114 superset of the old `count-lines-region', which is now an obsolete
3117 ** The command `just-one-space' (M-SPC), if given a negative argument,
3118 also deletes newlines around point.
3122 *** New option `delete-active-region'.
3123 If non-nil, [delete] and DEL delete the region if it is active and no
3124 prefix argument is given. If set to `kill', those commands kill
3127 *** New command `delete-forward-char', bound to [delete].
3128 This is meant for interactive use, and obeys `delete-active-region'.
3129 The command `delete-char' does not obey `delete-active-region'.
3131 *** `delete-backward-char' is now a Lisp function.
3132 Apart from obeying `delete-active-region', its behavior is unchanged.
3133 However, the byte compiler now warns if it is called from Lisp; Lisp
3134 callers should use delete-char with a negative argument instead.
3136 *** The option `mouse-region-delete-keys' has been deleted.
3138 ** Selection changes.
3140 The default handling of clipboard and primary selections has been
3141 changed to conform with modern X applications. In short, most
3142 commands for killing and yanking text now use the clipboard, while
3143 mouse commands use the primary selection.
3145 In the following, we provide a list of these changes, followed by a
3146 list of steps to get the old behavior back if you prefer that.
3148 *** `select-active-regions' now defaults to t.
3149 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
3150 the kill ring. The selected text is put in the primary selection, if
3151 the system possesses a separate primary selection facility (e.g. X).
3153 **** `select-active-regions' also accepts a new value, `only'.
3154 This means to only set the primary selection for temporarily active
3155 regions (usually made by mouse-dragging or shift-selection);
3156 "ordinary" active regions, such as those made with C-SPC followed by
3157 point motion, do not alter the primary selection.
3159 **** `mouse-drag-copy-region' now defaults to nil.
3161 *** mouse-2 is now bound to `mouse-yank-primary'.
3162 This pastes from the primary selection, ignoring the kill-ring.
3163 Previously, mouse-2 was bound to `mouse-yank-at-click'.
3165 *** `x-select-enable-clipboard' now defaults to t on all platforms.
3167 *** `x-select-enable-primary' now defaults to nil.
3168 Thus, commands that kill text or copy it to the kill-ring (such as
3169 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
3171 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
3172 exactly equivalent to M-w, C-w, and C-y respectively.
3174 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
3175 non-nil by default, as Windows does not support the primary selection
3176 between applications.
3178 *** To return to the previous behavior, do the following:
3180 **** Change `select-active-regions' to nil.
3181 **** Change `mouse-drag-copy-region' to t.
3182 **** Change `x-select-enable-primary' to t (on X only).
3183 **** Change `x-select-enable-clipboard' to nil.
3184 **** Bind `mouse-yank-at-click' to mouse-2.
3186 *** Support for X cut buffers has been removed.
3188 *** X clipboard managers are now supported.
3189 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
3191 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
3192 in the current rectangle. With a prefix argument, this prompts for a
3193 number to count from and for a format string.
3195 ** `redisplay-dont-pause' now defaults to t.
3196 This makes Emacs feel more responsive to editing commands that arrive
3197 at high rate, e.g. if you lean on some key, because stopping redisplay
3198 in the middle (when this variable is nil) forces more expensive
3199 updates later on, and Emacs appears to be unable to keep up.
3201 ** The behavior of <TAB> for active regions in Text mode has changed.
3202 In Text and related modes, typing <TAB> (`indent-for-tab-command')
3203 when the region is active causes Emacs to indent all the lines in the
3204 region, aligning them with the line previous to the first line in the
3205 region (or with the left margin if there is no previous line).
3207 ** When `occur' is called with a prefix argument, matching strings are
3208 collected into the `*Occur*' buffer without line numbers. If there
3209 are parenthesized subexpressions in the specified regexp, `occur'
3210 reads replacement text that may contain \\& and \\N whose convention
3211 follows `replace-match'.
3214 * Changes in Specialized Modes and Packages in Emacs 24.1
3216 ** Archive Mode has basic support for browsing and updating 7z archives.
3220 *** BibTeX mode now supports biblatex.
3221 Use the variable `bibtex-dialect' to select different BibTeX dialects.
3222 `bibtex-entry-field-alist' is now an obsolete alias for
3223 `bibtex-BibTeX-entry-alist'.
3225 *** New command `bibtex-search-entries', bound to C-c C-a.
3227 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
3229 *** New variable `bibtex-search-entry-globally'.
3233 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
3235 *** The default browser used by the package is now the "xdg-open" program,
3236 on platforms that support it. This calls your desktop's preferred browser.
3240 *** Support for musical notes.
3242 *** Support for logarithmic units.
3244 *** No longer uses the tex prefix for TeX specific unit names when
3245 using TeX or LaTeX mode.
3247 *** New option to highlight selections using faces.
3249 *** `calc-histogram' has the option of using a vector to determine the bins.
3251 *** New "O" option prefix.
3253 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
3255 ** Calendar, Diary, and Appt
3257 *** Diary entries can contain non-printing "comments".
3258 See the variable `diary-comment-start'.
3260 *** Appointments can specify their individual warning times.
3261 See the variable `appt-warning-time-regexp'.
3263 *** The function specified by `appt-disp-window-function' may be passed
3264 lists of arguments if multiple appointments are due at similar times.
3265 If you are using a custom function for this, you should update it.
3267 *** New function `diary-hebrew-birthday'.
3269 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
3270 may no longer be nil, but must all be strings.
3272 *** The obsolete (since Emacs 22.1) method of enabling the appt
3273 package by adding `appt-make-list' to `diary-hook' has been removed.
3274 Use `appt-activate' instead.
3276 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
3277 appt-issue-message (use the function appt-activate)
3278 appt-visible/appt-msg-window (use the variable appt-display-format)
3280 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
3281 view-diary-entries, list-diary-entries, show-all-diary-entries
3285 *** New feature to "guess" the style in an existing buffer.
3286 The main entry point is M-x c-guess.
3288 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
3290 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
3291 Thus C-M-a will, by default, go to the beginning of the immediate function,
3294 *** "Macros with semicolons" can be registered for correct indentation.
3295 Where such a macro ends a line (no semicolon) the next statement is no longer
3296 parsed as a statement continuation.
3298 ** Comint and modes derived from it use the standard completion code.
3302 *** Compilation mode can be used without Font Lock mode.
3303 `compilation-parse-errors-function' is now obsolete.
3305 *** New variable `compilation-filter-start', which is bound while
3306 `compilation-filter-hook' runs. It records the start position of the
3307 text inserted by `compilation-filter'.
3309 *** `compilation-error-screen-columns' and `compilation-first-column'
3310 are obeyed in the editing buffer. So programming language modes can
3311 set them, whereas previously only the value in the *Compilation*
3316 *** Customize buffers now contain a search field.
3317 The search is performed using `customize-apropos'.
3318 To turn off the search field, set `custom-search-field' to nil.
3320 *** Options in customize group buffers start out hidden if not customized.
3321 Use the arrow to the left of the option name to toggle visibility.
3323 *** custom-buffer-sort-alphabetically now defaults to t.
3325 *** The color widget now has a "Choose" button, which allows you to
3326 choose a color via `list-colors-display'.
3330 *** It is now possible to access buses other than the default system
3333 *** The `dbus-register-method' and `dbus-register-property' functions
3334 optionally do not register names.
3336 *** The new function `dbus-register-service' registers a known service
3337 name on a D-Bus without also registering a property or a method.
3341 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
3342 if called with a prefix argument, read a file name from the minibuffer
3343 instead of using the current buffer.
3345 *** The "dired local variables" feature of Dired-x is obsolete.
3346 The standard directory local variables feature replaces it.
3350 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
3351 controlling attempts to autojoin a channel.
3353 *** New variable `erc-coding-system-precedence': If we use `undecided'
3354 as the server coding system, this variable will then be consulted.
3355 The default is to decode strings that can be decoded as utf-8 as
3356 utf-8, and do the normal `undecided' decoding for the rest.
3360 *** The default value of `eshell-directory-name' has changed
3361 to be an "eshell" directory in `user-emacs-directory'.
3362 The old "~/.eshell/" directory is still used if it exists, though.
3366 *** The M-x gdb command now uses the GDB Machine Interface protocol.
3367 It now supports multithread non-stop debugging and simultaneous
3368 debugging of several threads.
3372 *** RET (`image-toggle-animation') toggles animation, if applicable.
3373 Animation plays once, unless the option `image-animate-loop' is non-nil.
3377 *** New command M-x info-display-manual displays a named Info manual.
3378 If that manual is already visited in some Info buffer, it displays
3379 that buffer. (This is handy if you have many manuals in many *info*
3380 buffers, and don't remember the name of the buffer visiting the manual
3381 you want to consult.) Otherwise, it loads and displays the manual.
3383 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
3384 This is for compatibility with the stand-alone Info reader program,
3385 and also because `Info-edit' is a rarely used command that is disabled
3388 ** Mail mode changes (not Message mode)
3390 *** New command M-x mail-add-attachment for adding MIME attachments
3392 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
3393 (Its name is misleading, since it has nothing to do with MIME
3394 attachments.) The old name is now an obsolete alias to the new name.
3396 ** MH-E has been updated to MH-E version 8.3.1.
3397 See MH-E-NEWS for details.
3399 ** Modula-2 mode provides auto-indentation.
3401 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3403 ** nXML mode no longer binds C-RET to `nxml-complete'.
3404 Completion is now performed via `completion-at-point', bound to C-M-i
3405 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3406 default), this performs tag completion.
3408 ** Org mode has been updated to version 7.8.09.
3409 See ORG-NEWS for details.
3411 ** Prolog mode has been completely revamped, with lots of additional
3412 functionality such as more intelligent indentation, electricity,
3413 support for more variants, including Mercury, and a lot more.
3417 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3418 in the Rmail incoming message.
3420 *** The variable `rmail-message-filter' no longer has any effect.
3421 This change was made in Emacs 23.1 but was not advertised at the time.
3422 Try using `rmail-show-message-hook' instead.
3426 *** M-x shell prompts for the shell path name if the default directory
3427 is a remote file name and neither the environment variable $ESHELL nor
3428 the variable `explicit-shell-file-name' is set.
3430 *** TAB is now bound to the standard `completion-at-point' command,
3431 which now implements the pcomplete rules for shell command completion.
3435 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3436 if the mail server supports them. This uses either built-in GnuTLS
3437 support, or the starttls.el library. Customize `smtpmail-stream-type'
3440 *** The variable `smtpmail-auth-credentials' has been removed.
3441 By default, the information is now stored in the file ~/.authinfo.
3442 This was the default value of smtpmail-auth-credentials. If you had
3443 customized smtpmail-auth-credentials to a list of user names and
3444 passwords, those settings are not used. During your first connection
3445 to the smtp server, Emacs will prompt for the user name and password,
3446 and offer to save them to ~/.authinfo. Or you can manually copy the
3447 credentials to ~/.authinfo. For example, if you had
3449 (setq smtpmail-auth-credentials
3450 '(("mail.example.org" 25 "jim" "s!cret")))
3452 then the equivalent line in ~/.authinfo would be
3454 machine mail.example.org port 25 login jim password s!cret
3456 See the auth-source manual for more information, e.g. on encrypting
3457 the credentials file.
3459 *** The variable `smtpmail-starttls-credentials' has been removed.
3460 If you had that set, you need to put
3462 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3464 in your ~/.authinfo file instead.
3466 *** SMTPmail defaults to using the address in the From: header as the
3467 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3468 to the address you wish to use instead.
3472 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3473 and `sql-oracle-scan-on'.
3475 *** New options controlling prompting for login parameters.
3476 Each supported product has a custom variable `sql-*-login-params',
3477 which is a list of the parameters to be prompted for before a
3478 connection is established.
3480 *** The command `sql-product-interactive' now takes a prefix argument,
3481 which causes it to prompt for an SQL product.
3483 *** Product-specific SQL interactive commands now take prefix arguments.
3484 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3485 given a prefix argument, prompt for a name for the SQL interactive
3486 buffer. This reduces the need for calling `sql-rename-buffer'.
3488 *** SQL interactive modes suppress command continuation prompts, and
3489 replace tabs with spaces. The first change impacts multiple line SQL
3490 statements entered with C-j between each line, statements yanked into
3491 the buffer and statements sent with `sql-send-*' functions. The
3492 second prevents the MySQL and Postgres interpreters from listing
3493 object name completions when sent text via `sql-send-*' functions.
3495 *** New command `sql-connect' starts a predefined SQLi session,
3496 using the login parameters from `sql-connection-alist'.
3498 *** New "Save Connection" menu item in SQLi buffers.
3499 This gathers the login params specified for the SQLi session, if it
3500 was not started by a connection, and saves them as a new connection.
3502 *** New commands for listing database objects and details:
3503 sql-list-all and sql-list-table.
3505 *** An API for manipulating SQL product definitions has been added.
3509 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3513 *** New inline access method "ksu" (kerberized su).
3515 *** The following access methods are discontinued: "ssh1_old",
3516 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3518 *** The user option `remote-file-name-inhibit-cache' controls whether
3519 remote file attributes are cached for better performance.
3521 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3522 default value to "".
3524 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3525 for remote machines which support SELinux.
3527 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3528 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3529 the degree of parallelism.
3531 ** VC and related modes
3533 *** Support for pulling on distributed version control systems.
3534 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3535 supported (currently with Bzr, Git, and Mercurial), to update the
3536 current branch and working tree. A prefix argument means to prompt
3537 the user for specifics, e.g. a pull location.
3539 *** `vc-update' is now an alias for `vc-pull'.
3541 *** Support for merging on distributed version control systems.
3542 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3543 is supported (currently with Bzr, Git, and Mercurial), to merge
3544 changes from another branch into the current one. It prompts for
3545 specifics, e.g. a merge source.
3547 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3548 shows a diff while querying the user. It defaults to t.
3550 *** Log entries in some Log View buffers can be toggled to display a
3551 longer description by typing RET (log-view-toggle-entry-display).
3552 This is currently supported for Bzr, Git, and Mercurial (to support
3553 another backend, define a `log-view-expanded-log-entry-function').
3554 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3555 use this to display the full log entry for the revision at point.
3557 *** New command `vc-ediff' allows visual comparison of two revisions
3558 of a file similar to `vc-diff', but using ediff backend.
3560 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3561 this was not advertised at the time.
3563 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3564 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3565 this was not advertised at the time.
3571 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3573 *** partial-completion-mode (complete.el) is obsolete.
3574 You can get a comparable behavior with:
3575 (setq completion-styles '(partial-completion initials))
3576 (setq completion-pcm-complete-word-inserts-delimiters t)
3578 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3580 *** pgg is obsolete (use EasyPG instead).
3582 *** sregex.el is obsolete, since rx.el is a strict superset.
3584 *** s-region.el and pc-select.el are obsolete.
3585 They are superseded by shift-select-mode, enabled by default since 23.1.
3587 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3591 *** The Landmark game is now invoked with `landmark', not `lm'.
3592 Its functions and variables have been similarly renamed.
3594 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3595 (This interfered with cua-mode.)
3597 *** f90.el has some support for Fortran 2008 syntax.
3599 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3601 *** New command `nato-region' converts text to NATO phonetic alphabet.
3604 * New Modes and Packages in Emacs 24.1
3606 ** Occur Edit mode applies edits made in *Occur* buffers to the
3607 original buffers. It is bound to "e" in Occur mode.
3609 ** New global minor mode electric-pair-mode.
3610 When enabled, typing an open parenthesis automatically inserts the
3611 matching closing one.
3613 ** New global minor mode electric-indent-mode.
3614 When enabled, typing certain characters triggers reindentation.
3615 Major modes wishing to use this can set electric-indent-chars or
3616 electric-indent-functions.
3618 ** New global minor mode electric-layout-mode.
3619 When enabled, typing certain characters automatically inserts newlines.
3620 Major modes wishing to use this can set electric-layout-rules.
3622 ** tabulated-list.el provides a generic major mode for tabulated data,
3623 from which other modes can be derived.
3625 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3627 ** secrets.el is an implementation of the Secret Service API, an
3628 interface to password managers like GNOME Keyring or KDE Wallet. The
3629 Secret Service API requires D-Bus for communication. The command
3630 `secrets-show-secrets' offers a buffer with a visualization of the
3633 ** notifications.el provides an implementation of the Desktop
3634 Notifications API. It requires D-Bus for communication.
3636 ** soap-client.el supports access to SOAP web services from Emacs.
3637 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3639 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3641 ** New emacs-lock.el package.
3642 The previous version has been moved to obsolete/old-emacs-lock.el.
3643 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3644 against exiting Emacs and killing the buffer can be set separately.
3645 The mechanism for automatically turning off protection for buffers
3646 with dead inferior processes has been generalized.
3649 * Incompatible Lisp Changes in Emacs 24.1
3651 ** Passing a nil argument to a minor mode function call now ENABLES
3652 the minor mode unconditionally. This is so that you can write e.g.
3654 (add-hook 'text-mode-hook 'foo-mode)
3656 to enable foo-mode in Text mode buffers, removing the need for
3657 `turn-on-foo-mode' style functions. This affects all mode commands
3658 defined by `define-minor-mode'. If called interactively, the mode
3659 command still toggles the minor mode.
3661 ** The return value of `backup-buffer' has changed.
3662 It is now a list of three elements, where the second element is a list
3663 describing the original file's SELinux context. If Emacs or the
3664 system lacks SELinux support, the context list is (nil nil nil nil).
3665 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3667 ** `char-direction-table' and the `char-direction' function were deleted.
3668 They were buggy and inferior to the new support of bidirectional
3669 editing introduced in Emacs 24. If you need the bidirectional
3670 properties of a character, use `get-char-code-property' with the last
3671 argument `bidi-class'.
3673 ** `copy-directory' now copies the source directory as a subdirectory
3674 of the target directory, if the latter is an existing directory. The
3675 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3676 the contents directly into a pre-existing target directory.
3678 ** For mouse click input events in the text area, the Y pixel
3679 coordinate in the POSITION list now counts from the top of the text
3680 area, excluding any header line. Previously, it counted from the top
3683 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3684 been further reduced. Now a backquote not followed by a space is
3685 always treated as a "new-style" backquote. Please remove all
3686 "old-style" backquotes from your code. If your code uses backquotes
3687 as documented in the Elisp manual, and compiles without warning, then
3688 you have nothing to do in this regard. Code not following the
3689 appropriate conventions may fail to compile.
3691 The most common cause of trouble seems to be an old-style backquote
3692 followed by a newline. Another cause of trouble is vector notation
3693 for key sequence notation: instead of [(control ,)] and [(control ')],
3694 you should write [(control ?,)] and [(control ?')], which will work in
3697 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3698 was not advertised at the time. The function `custom-initialize-delay'
3699 replaced all known uses.
3701 ** `view-buffer' now treats special mode-class in the same way that
3702 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3703 major mode is special).
3705 ** Menu and tool bar changes
3707 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3708 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3709 With these alist entries omitted, `make-frame' checks the value of the
3710 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3711 a menu-bar or tool-bar, respectively. If the alist entries are added,
3712 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3714 *** The menu bar bindings's caches are not used any more.
3715 Use (where-is-internal <def> nil t) instead.
3717 ** Regions created by mouse dragging are now normal active regions,
3718 similar to those created by shift-selection (see Selection changes
3719 above). In previous Emacs versions, these regions were delineated by
3720 `mouse-drag-overlay'; that variable has been removed.
3722 ** The fourth argument of `filter-buffer-substring' has been removed.
3723 If you want to remove text properties from the final result, simply
3724 pass the result through substring-no-properties.
3726 ** cl.el no longer provides `cl-19'.
3728 ** The following obsolete functions and aliases have been removed
3729 (the appropriate new function is given in parentheses; "not needed"
3730 means you can just remove all calls to the function in question):
3732 *** `comint-kill-output' (`comint-delete-output')
3733 *** `decompose-composite-char' (`char-to-string')
3734 *** `outline-visible' (`outline-invisible-p')
3735 *** `internal-find-face' (`facep')
3736 *** `internal-get-face' (`facep and check-face')
3737 *** `frame-update-faces' (not needed)
3738 *** `frame-update-face-colors' (`frame-set-background-mode')
3739 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3740 *** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
3741 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3742 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3743 *** `x-make-font-unbold' (`make-face-unbold')
3744 *** `x-make-font-unitalic' (`make-face-unitalic')
3745 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3746 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3747 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3748 *** `char-bytes' (== 1)
3749 *** `isearch-return-char' (`isearch-printing-char')
3750 *** `make-local-hook' (not needed)
3751 *** `set-screen-height' (`set-frame-height')
3752 *** `set-screen-width' (`set-frame-width')
3754 ** The following obsolete variables and varaliases have been removed
3755 (the appropriate new variable is given in parentheses):
3757 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3758 *** `vc-header-alist' (`vc-BACKEND-header')
3759 *** `directory-sep-char' (== ?/)
3760 *** `font-lock-defaults-alist' (`font-lock-defaults')
3761 *** `e' (`float-e').
3763 ** The following obsolete files were removed:
3764 sc.el, x-menu.el, rnews.el, rnewspost.el
3766 ** The format of the finder-inf.el file has changed, since the Finder
3767 mechanism is now based on the package system. The variable
3768 `finder-package-info' is replaced by `package--builtins' and
3769 `finder-keywords-hash'.
3771 ** When generating autoloads, `update-directory-autoloads' no longer
3772 assumes every inspected file is in your `load-path'. It instead
3773 generates relative names according to the current `load-path'.
3776 * Lisp Changes in Emacs 24.1
3778 ** Code can now use lexical scoping by default instead of dynamic scoping.
3779 The `lexical-binding' variable enables lexical scoping for local
3780 variables. It is typically set via a file-local variable in the first
3781 line of the file, in which case it applies to all the code in that
3784 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3785 binding instead of the old dynamic binding mode.
3787 *** Lexically scoped interpreted functions are represented with a new form
3788 of function value which looks like (closure ENV ARGS &rest BODY).
3790 *** New macro `letrec' to define recursive local functions.
3792 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3793 So do `defcustom' and other forms that call `defvar' as a subroutine.
3795 *** New function `special-variable-p' to check whether a variable is
3796 declared as dynamically bound.
3798 *** The form ((lambda ...) ...) is deprecated.
3800 ** An Emacs Lisp testing tool is now included.
3801 Emacs Lisp developers can use this tool to write automated tests for
3802 their code. See the ERT info manual for details.
3804 ** Changes for bidirectional display and editing
3806 *** New function `current-bidi-paragraph-direction'.
3807 This returns the base direction of the paragraph at point.
3809 *** New function `bidi-string-mark-left-to-right'.
3810 Given a string containing characters from right-to-left scripts, this
3811 function returns another string which can be safely inserted into a
3812 buffer, such that any following text will be always displayed to the
3813 right of that string. (This works by appending an invisible Unicode
3814 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3816 This is useful when the buffer has overall left-to-right paragraph
3817 direction and you need to insert a string whose contents are not known
3818 in advance, without disrupting the layout of the line.
3822 *** Window tree functions are accessible in Elisp.
3823 Functions are provided to return the parent, siblings or child windows
3824 of any window including internal windows (windows not associated with a
3825 buffer) in the window tree.
3827 **** New function `window-valid-p' gives non-nil for live and internal
3830 **** Window manipulation can deal with internal windows.
3831 Many window handling functions like `split-window', `delete-window', or
3832 `delete-other-windows' as well as the window resizing functions can now
3833 act on any window including internal ones.
3835 *** window-total-height/-width vs window-body-height/-width.
3836 The function `window-height' has been renamed to `window-total-height'
3837 and `window-width' has been renamed to `window-body-width'. The old
3838 names are provided as aliases. Two new functions `window-total-width'
3839 and `window-body-height' are provided.
3841 *** Window parameters specific to window handling functions.
3842 For each window you can specify a parameter to override the default
3843 behavior of a number of functions like `split-window', `delete-window'
3844 and `delete-other-windows'. The variable `ignore-window-parameters'
3845 allows to ignore processing such parameters.
3847 *** New semantics of third argument of `split-window'.
3848 The third argument of `split-window' has been renamed to SIDE and can be
3849 set to any of the values 'below, 'right, 'above, or 'left to make the
3850 new window appear on the corresponding side of the window that shall be
3851 split. Any other value of SIDE will cause `split-window' to split the
3852 window into two side-by-side windows as before.
3854 *** Window resizing functions.
3855 A new standard function for resizing windows called `window-resize' has
3856 been introduced. This and all other functions for resizing windows no
3857 longer delete any windows when they become too small.
3859 *** Deleting the selected window now selects the most recently selected
3860 live window on that frame instead.
3862 *** `adjust-window-trailing-edge' adjustments.
3863 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3864 is able to resize other windows if a window adjacent to the trailing
3865 edge cannot be shrunk any more. This makes its behavior more similar to
3866 that of Emacs 21 without compromising, however, its inability to delete
3867 windows which was introduced in Emacs 22.
3869 *** Window-local buffer lists.
3870 Windows now have local buffer lists. This means that removing a buffer
3871 from display in a window will preferably show the buffer previously
3872 shown in that window with its previous window-start and window-point
3873 positions. This also means that the same buffer may be automatically
3874 shown twice even if it already appears in another window.
3876 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3877 which if non-nil requires the buffer to be displayed in the currently
3878 selected window, signaling an error otherwise. If nil, another window
3879 can be used, e.g. if the selected one is strongly dedicated.
3881 *** `split-window-vertically' and `split-window-horizontally' renamed
3882 to `split-window-below' and `split-window-right' respectively.
3883 The old names are kept as aliases.
3887 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3888 named ACTION, and takes a display action of the same form as
3889 `display-buffer-base-action' (see Changes, above). A non-nil,
3890 non-list value is treated specially, as the old meaning.
3892 **** New variable `display-buffer-overriding-action'.
3894 **** The procedure of `display-buffer' etc. to choose a window is
3895 determined by combining `display-buffer-overriding-action',
3896 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3897 and `display-buffer-fallback-action'. The second and fourth of these
3898 are user-customizable variables.
3900 See the docstring of `display-buffer' for details.
3902 *** New functions `window-state-get' and `window-state-put'.
3903 These functions allow to save and restore the state of an arbitrary
3904 frame or window as an Elisp object.
3908 *** New variable `completion-extra-properties' used to specify extra
3909 properties of the current completion:
3910 - :annotate-function, same as the old completion-annotate-function.
3911 - :exit-function, function to call after completion took place.
3913 *** Functions on `completion-at-point-functions' can return any of the
3914 properties valid for `completion-extra-properties'.
3916 *** `completion-annotate-function' is obsolete.
3918 *** New `metadata' method for completion tables. The metadata thus returned
3919 can specify various details of the data returned by `all-completions':
3920 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3921 used to select a style in completion-category-overrides.
3922 - `annotation-function' to add annotations in *Completions*.
3923 - `display-sort-function' to specify how to sort entries in *Completions*.
3924 - `cycle-sort-function' to specify how to sort entries when cycling.
3926 *** `minibuffer-local-filename-must-match-map' is not used any more.
3927 Instead, the bindings in `minibuffer-local-filename-completion-map'
3928 are combined with `minibuffer-local-must-match-map'.
3930 *** New variable `completing-read-function' allows overriding the
3931 behavior of `completing-read'.
3933 ** `glyphless-char-display' can now distinguish between graphical and
3934 text terminal display, via a char-table entry that is a cons cell.
3936 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3937 Instead, the offending function is removed.
3941 *** New function `run-hook-wrapped' for running an abnormal hook by
3942 passing the hook functions as arguments to a "wrapping" function.
3943 Like `run-hook-with-args-until-success', it stops at the first
3944 non-nil return value.
3946 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3947 set of "wrapping" filters, similar to around advice.
3948 (A version of this macro was actually added in Emacs 23.2 but was not
3949 advertised at the time.)
3953 *** New macro `condition-case-unless-debug' (this was actually added in
3954 Emacs 23.1 as condition-case-no-debug, but not advertised)
3956 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3958 *** Variable `stack-trace-on-error' removed.
3960 *** The debugger can now "continue" from an error, which means it will
3961 jump to the error handler as if the debugger had not been invoked
3962 instead of jumping all the way to the top-level.
3964 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3965 This can be useful when `inhibit-quit' is set.
3967 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3968 named Emacs server instances.
3970 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3971 to redirect STDOUT to a file.
3973 ** The function `format-time-string' now supports the %N directive,
3974 for higher-resolution time stamps.
3976 ** New input reading functions
3978 *** New function `read-char-choice' reads a restricted set of
3979 characters, discarding any inputs not inside the set.
3981 *** The command `read-color' now requires a match for a color name
3982 or RGB triplet, instead of signaling an error if the user provides
3985 **** `facemenu-read-color' is now an alias for `read-color'.
3987 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3988 The variable is now used to load all kind of supported dynamic libraries,
3989 not just image libraries. The previous name is still available as an
3992 ** Syntax parsing changes
3994 *** New variable `syntax-propertize-function'.
3995 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3996 This allows syntax-table properties to be set independently from font-lock:
3997 just call syntax-propertize to make sure the text is propertized.
3998 Together with this new variable come a new hook
3999 syntax-propertize-extend-region-functions, as well as two helper functions:
4000 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
4001 as-is; and syntax-propertize-rules which provides a new way to specify
4004 *** Syntax tables support a new "comment style c" additionally to style b.
4006 ** New hook `post-self-insert-hook', run after `self-insert-command'.
4008 ** frame-local variables cannot be let-bound any more.
4010 ** Major and minor mode changes
4012 *** `set-auto-mode' now respects mode: local variables at the end of files,
4013 as well as those in the -*- line.
4015 *** `prog-mode' is a new major mode from which programming modes
4018 **** `prog-mode-hook' can be used to enable features for programming
4019 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
4020 on-the-fly spell checking for comments and strings.
4022 *** New hook `change-major-mode-after-body-hook', run by
4023 `run-mode-hooks' just before any other mode hooks.
4025 *** Enabled globalized minor modes can be disabled in specific major modes.
4026 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
4027 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
4029 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
4031 ** File-handling changes
4033 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
4034 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
4035 both non-nil. Interactively, TRASH defaults to t, unless a prefix
4036 argument is supplied (see Trash changes, above).
4038 *** New file predicates: `file-equal-p', `file-in-directory-p'.
4040 ** Tool-bars can display separators.
4041 Tool-bar separators are handled like menu separators in menu-bar maps,
4042 i.e. via menu entries of the form `(menu-item "--")'.
4046 *** Animated images support (currently animated gifs only).
4048 **** `image-animated-p' returns non-nil if an image can be animated.
4050 **** `image-animate' animates a supplied image spec.
4052 **** `image-animate-timer' returns the timer object for an image that
4055 *** `image-extension-data' has been renamed to `image-metadata'.
4056 The old name is an obsolete alias to the new one.
4058 *** Image mode can view any image type that ImageMagick supports.
4059 This requires Emacs to be built with ImageMagick support.
4061 **** New function `imagemagick-types', defined if ImageMagick support
4062 is enabled, returns a list of image file extensions that your
4063 ImageMagick installation supports.
4065 **** New function `imagemagick-register-types' enables ImageMagick
4066 image types in Image mode and in `create-image' and other helper
4069 **** New option `imagemagick-types-inhibit' excludes certain
4070 ImageMagick image types from `imagemagick-register-types'.
4072 **** With ImageMagick support, there are extra Image mode commands to
4073 resize and rotate images: `image-transform-fit-to-height',
4074 `image-transform-fit-to-width', `image-transform-set-rotation', and
4075 `image-transform-set-scale'.
4077 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
4078 passes it to the mail user agent function. This argument specifies an
4079 action for returning to the caller after finishing with the mail. For
4080 example, this is used by Rmail to optionally delete a mail window.
4082 ** XML and HTML parsing
4083 If Emacs is compiled with libxml2 support, there are two new
4084 functions: `libxml-parse-html-region' (which parses "real world" HTML)
4085 and `libxml-parse-xml-region' (which parses XML). Both return an
4086 Emacs Lisp parse tree.
4088 ** Networking and encryption changes
4090 *** `open-network-stream' can now be used to open an encrypted stream.
4091 It now accepts an optional `:type' parameter for initiating a TLS
4092 connection, directly or via STARTTLS. To do STARTTLS, additional
4093 parameters (`:end-of-command', `:success', `:capabilities-command')
4094 must also be supplied.
4096 *** New library gnutls.el.
4097 The new function `gnutls-available-p' returns non-nil if Emacs is
4098 built with GnuTLS support. The main entry points are
4099 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
4100 these functions through `open-network-stream', because that can
4101 upgrade connections through STARTTLS opportunistically or use plain
4102 SSL, depending on your needs. For debugging, set `gnutls-log-level'
4105 *** New primitive `secure-hash' that supports many secure hash algorithms:
4106 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
4107 sha1.el has been removed. The `sha1' feature is provided by default.
4111 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
4113 ** Progress reporters can now "spin".
4114 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
4115 now be nil, or omitted. This makes a "non-numeric" reporter. Each
4116 time you call `progress-reporter-update' on that progress reporter,
4117 with a nil or omitted VALUE argument, the reporter message is
4118 displayed with a "spinning bar".
4120 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
4121 being reverted, even if the buffer has a local `revert-buffer-function'.
4123 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
4124 If delayed-warnings-list is non-nil, the command loop calls
4125 `delayed-warnings-hook' after `post-command-hook'. At present, this
4126 is only used by Emacs on some platforms to display warnings during
4127 startup, which might otherwise not be noticed. This uses the
4128 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
4130 ** rx.el has a new `group-n' construct for explicitly numbered groups.
4132 ** New function `make-composed-keymap' that constructs a new keymap
4133 from multiple input maps. You can use this to make a keymap that
4134 inherits from multiple maps, eg:
4135 (set-keymap-parent newmap (make-composed-keymap othermap parent))
4137 ** New function `string-prefix-p'.
4138 (This was actually added in Emacs 23.2 but was not advertised at the time.)
4140 ** New reader macro ## that stands for the empty symbol.
4141 This means that the empty symbol can now be read back. Also, #: by itself
4142 (when not immediately followed by a possible symbol character) stands for
4143 an empty uninterned symbol.
4145 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
4147 ** The following functions and variables are obsolete:
4149 *** `tooltip-use-echo-area' is obsolete.
4150 Rather than setting this to t, disable Tooltip mode instead.
4152 *** buffer-substring-filters is obsolete.
4153 Use `filter-buffer-substring-functions' instead.
4155 *** `byte-compile-disable-print-circle' is obsolete.
4157 *** `deferred-action-list' and `deferred-action-function' are obsolete.
4158 Use `post-command-hook' instead.
4160 *** `font-lock-maximum-size' is obsolete.
4163 * Changes in Emacs 24.1 on Non-Free Operating Systems
4165 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
4166 and also when HOME is set to C:\ by default.
4168 ** New configure.bat options
4170 *** --enable-checking builds Emacs with extra runtime checks.
4172 *** --distfiles specifies files to be included in binary distribution.
4174 *** --without-gnutls disables automatic GnuTLS detection.
4176 *** --lib for general library linkage, works with the USER_LIBS build variable.
4178 ** New make target `dist' to create binary distribution for MS Windows.
4180 ** The Lisp function `w32-default-color-map' is now obsolete.
4181 (It is only used internally in the Emacs C code.)
4183 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
4184 reappear on mouse-over. (Requires OS X 10.6 or later.)
4186 ** On Mac OS X, dragging a file into Emacs visits the file, like on
4187 other platforms, rather than inserting its contents into the buffer.
4190 ----------------------------------------------------------------------
4191 This file is part of GNU Emacs.
4193 GNU Emacs is free software: you can redistribute it and/or modify
4194 it under the terms of the GNU General Public License as published by
4195 the Free Software Foundation, either version 3 of the License, or
4196 (at your option) any later version.
4198 GNU Emacs is distributed in the hope that it will be useful,
4199 but WITHOUT ANY WARRANTY; without even the implied warranty of
4200 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4201 GNU General Public License for more details.
4203 You should have received a copy of the GNU General Public License
4204 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
4210 paragraph-separate: "[
\f]*$"