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'.
150 * Changes in Emacs 24.5 on Non-Free Operating Systems
153 * Installation Changes in Emacs 24.4
156 ** Emacs can now be compiled with ACL support.
157 This happens by default if a suitable support library is found at
158 build time, like libacl on GNU/Linux. To prevent this, use the
159 configure option `--disable-acl'. See below for related features.
162 ** Emacs can now be compiled with file notification support.
163 This happens by default if a suitable system library is found at
164 build time. To prevent this, use the configure option
165 `--without-file-notification'. See below for file-notify features.
166 This feature is not available for the Nextstep port.
169 ** Emacs can now be compiled with zlib support.
170 This happens by default if zlib is present, which it normally is.
171 To prevent this, use the configure option `--without-zlib'.
172 This provides the function `zlib-decompress-region'; see below for details.
175 ** The configure option `--without-compress-info' has been generalized,
176 and renamed to `--without-compress-install'. It now prevents compression
177 of _any_ files during installation.
180 ** The configure option `--with-crt-dir' has been removed.
181 It is no longer needed, as the crt*.o files are no longer linked specially.
184 ** Directories passed to configure option `--enable-locallisppath' are
185 no longer created during installation.
188 ** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
189 This requires pkg-config to be available at build time.
192 * Startup Changes in Emacs 24.4
195 ** When initializing `load-path', an empty element in the EMACSLOADPATH
196 environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
197 "/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
198 load-path (the one that would have been used if EMACSLOADPATH was unset).
199 This makes it easier to _extend_ the load-path via EMACSLOADPATH
200 (previously, EMACSLOADPATH had to specify the complete load-path,
201 including the defaults). (In older versions of Emacs, an empty element
202 was replaced by ".", so use an explicit "." now if that is what you want.)
205 ** The -L option, which normally prepends its argument to load-path,
206 will instead append, if the argument begins with `:' (or `;' on MS Windows;
207 i.e., `path-separator').
210 ** If you use either site-load.el or site-init.el to customize the dumped
211 Emacs executable, any changes to `load-path' that these files make
212 will no longer be present after dumping. To affect a permanent change
213 to `load-path', use the `--enable-locallisppath' option of `configure'.
216 ** The user option `initial-buffer-choice' can now specify a function
217 to set up the initial buffer.
220 * Changes in Emacs 24.4
223 ** New function `zlib-decompress-region', which decompresses gzip- and
224 zlib-format compressed data using built-in zlib support, if available.
227 ** New option `gnutls-verify-error', if non-nil, means that Emacs
228 should reject SSL/TLS certificates that GnuTLS determines as invalid.
229 (This option defaults to nil at present, but this is expected to change
230 in a future release.)
233 ** Emacs now supports menus on text-mode terminals.
234 If the terminal supports a mouse, clicking on the menu bar, or on
235 sensitive portions of the mode line or header line, will drop down the
236 menu defined at that position. Likewise, clicking C-mouse-2 or
237 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
240 If the text terminal does not support a mouse, you can activate the
241 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
243 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
244 customize the option `tty-menu-open-use-tmm' to a non-nil value.
245 (Typing M-` always invokes `tmm-menubar', even if `tty-menu-open-use-tmm'
249 ** The *Messages* buffer is created in `messages-buffer-mode',
250 a new major mode, with read-only status. Any code that might create
251 the *Messages* buffer should call the function `messages-buffer' to do
252 so and set up the mode.
255 ** Emacs can now support ACLs (access control lists).
256 This requires a suitable support library to be found at build time.
257 On GNU/Linux, the POSIX ACL interface is used via libacl.
258 On MS-Windows, the NT Security APIs are used to emulate the POSIX interface.
261 *** Emacs preserves the ACL entries of files when backing up.
263 *** New functions `file-acl' and `set-file-acl' get and set the ACL
266 ** Multi-monitor support has been added.
269 *** New functions `display-monitor-attributes-list' and
270 `frame-monitor-attributes' can be used to obtain information about
271 each physical monitor on multi-monitor setups.
274 *** The functions `display-pixel-width' and `display-pixel-height' now
275 behave consistently among the platforms: they return the pixel width
276 or height for all physical monitors associated with the given display
277 as if they were on X. To get information for each physical
278 monitor, use the new functions above. Similar notes also apply to
279 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
280 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
283 ** The cursor stops blinking after 10 blinks (by default) on X and NS.
284 You can change the default by customizing `blink-cursor-blinks'.
287 ** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
288 This affects View mode, etc.
291 ** The default value of `make-backup-file-name-function' is no longer nil.
292 Instead it defaults to a function that does what the nil value used to.
297 *** The command `apropos-variable' is renamed to `apropos-user-option'.
298 `apropos-user-option' shows all user options while `apropos-variable'
299 shows all variables. When called with a universal prefix argument,
300 the two commands swap their behaviors. When `apropos-do-all' is
301 non-nil, they output the same results.
304 *** The key `?' now describes prefix bindings, like `C-h'.
307 *** The command `describe-function' has been extended for EIEIO.
308 Running it on constructors will show a full description of the
309 generated class. For generic functions, it will show all
310 implementations together with links to the source. The old commands
311 `describe-class', `describe-constructor' and `describe-generic' were
315 *** The function `quail-help' is no longer an interactive command.
316 Use `C-h C-\' (`describe-input-method') instead.
321 *** ImageMagick images now support the :max-width and :max-height keywords.
324 *** When using `create-image' with image data, you can pass a :format
325 attribute (via the property-list argument) in order to help
326 ImageMagick detect the image type. The value should be a MIME
327 content-type that is found in the new variable `image-format-suffixes'.
329 ** Frame and window changes
332 *** The function `window-in-direction' introduced in Emacs 24.1 now
333 takes additional arguments for specifying a reference point, wrapping
334 selection around frame borders, and specifying ways to select the
338 *** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
339 bound to <f11> and M-<f10>, respectively.
342 *** New hooks `focus-in-hook', `focus-out-hook'.
343 These are normal hooks run when an Emacs frame gains or loses input focus.
346 *** Emacs can now change frame sizes in units of pixels, rather than
347 text rows or columns. When maximizing a frame or making it fullscreen,
348 remaining extra pixels are no longer given to the minibuffer, the rightmost
349 fringe, or other unusable space, but are distributed among the text
350 areas of the frame's windows. If the new option `frame-resize-pixelwise'
351 is non-nil, all frame size changes happen pixelwise and set the
352 corresponding size hints for the window manager.
355 *** Emacs can now change window sizes in units of pixels.
356 Mouse-dragging a mode line or window divider now changes the size of
357 adjacent windows pixelwise. If the new option `window-resize-pixelwise'
358 is non-nil, functions like `balance-windows-area' and `fit-window-to-buffer'
359 resize windows pixelwise. Most functions for changing or accessing
360 window sizes now have an additional argument that allows changes to apply,
361 or values to be returned, in pixels instead of lines/columns.
364 *** The functions `window-body-height' and `window-body-width' now never
365 count partially visible lines or columns if called with a nil PIXELWISE
369 *** Emacs can now draw dividers between adjacent windows. To put
370 dividers between side-by-side/vertically stacked windows customize the
371 frame parameters `right-divider-width' and `bottom-divider-width' to
372 some positive integer. You can drag dividers with the mouse (they show
373 a corresponding cursor when the mouse hovers over them). You can change
374 the appearance of dividers by customizing the faces `window-divider',
375 `window-divider-first-pixel', and `window-divider-last-pixel'. The last
376 two are useful to provide a 3D effect, or to better distinguish dividers
377 from surrounding display objects.
380 *** New functions are provided to return the pixel sizes of window
381 components, namely `window-scroll-bar-width', `window-mode-line-height'
382 `window-header-line-height', `window-right-divider-width' and
383 `window-bottom-divider-width'.
386 *** The new function `window-text-pixel-size' returns the size of the
387 text of a window's buffer in pixels. This allows functions like
388 `fit-frame-to-buffer' and `fit-window-to-buffer' to accurately fit a
389 window to its buffer as it will be displayed.
392 *** `fit-window-to-buffer' can now resize windows in both dimensions.
393 This behavior is controlled by the new option
394 `fit-window-to-buffer-horizontally'. The new option
395 `fit-frame-to-buffer' allows to fit the window's frame to its buffer.
398 *** `fit-frame-to-buffer' now fits frames in both dimensions. The new
399 options `fit-frame-to-buffer-margins' and `fit-frame-to-buffer-sizes'
400 control the size of the frame and its position on screen.
403 *** Temp Buffer Resize Mode can now adjust height and width of windows
404 and frames. `temp-buffer-resize-mode' is now able to adjust the height
405 and the width of a window displaying a temporary buffer. The new option
406 `temp-buffer-max-width' allows to control the width of temporary buffer
407 windows. Moreover, if the new option `fit-frame-to-buffer' is non-nil
408 and the buffer appears in the root window of a frame, Temp Buffer Resize
409 Mode will try to adjust width and/or height of the frame.
412 *** `split-window' is now a non-interactive function, not a command.
413 As a command, it was a special case of `C-x 2' (`split-window-below'),
414 and as such superfluous. After being reimplemented in Lisp, its
415 interactive form was mistakenly retained.
418 *** The functions `window-size' and `window-total-size' now have an
419 optional argument to return a rounded size value.
422 *** `window-state-put' now allows to put a window state into internal
426 *** New option `scroll-bar-adjust-thumb-portion'.
427 Available only on X, this option allows to control over-scrolling
428 using the scroll bar (i.e. dragging the thumb down even when the end
429 of the buffer is visible).
432 *** New basic action function `display-buffer-in-previous-window' has
433 `display-buffer' display a buffer in a window previously showing that
437 *** New basic action function `display-buffer-at-bottom' has
438 `display-buffer' choose or make a window at the bottom of the selected
442 *** New display action function `display-buffer-no-window' to not
443 display the buffer in a window.
446 *** New display action alist entry `allow-no-window' to indicate the
447 caller of `display-buffer' is ready to handle the case of not
448 displaying the buffer in a window.
450 ** Lisp evaluation changes
452 *** `eval-defun' on an already defined defcustom calls the :set function,
456 *** The commands `eval-expression' (`M-:'), `eval-last-sexp' (`C-x C-e'),
457 and `eval-print-last-sexp' (`C-j' in Lisp Interaction mode) can take a
458 zero prefix argument. This disables truncation of lists in the output,
459 equivalent to setting `(eval-expression-)print-length' and
460 `(eval-expression-)print-level' to nil. Additionally, it causes integers
461 to be printed in other formats (octal, hexadecimal, and character).
464 *** New hook `eval-expression-minibuffer-setup-hook' run by
465 `eval-expression' on entering the minibuffer.
468 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
471 ** `cache-long-line-scans' is now non-nil, and renamed to `cache-long-scans',
472 because it affects caching of paragraph scanning results as well.
473 There is no reason to set this to nil except for debugging purposes.
476 ** The option `set-mark-default-inactive' has been deleted.
477 This unfinished feature was introduced by accident in Emacs 23.1;
478 simply disabling Transient Mark mode does the same thing.
481 ** The default value of `comment-use-global-state' is now t,
482 and this variable has been marked obsolete.
485 ** `emacs-bzr-version' has been renamed to `emacs-repository-version',
486 and works for git too, if you fetch the repository notes.
489 ** New option `load-prefer-newer' affects how the `load' function chooses
490 the file to load. If this is non-nil, then when both .el and .elc
491 versions of a file exist, and the caller did not explicitly specify
492 which one to load, then the newer file is loaded. The default, nil,
493 means to always load the .elc file.
496 * Editing Changes in Emacs 24.4
498 ** Indentation changes
501 *** `electric-indent-mode' is now enabled by default.
502 Typing RET reindents the current line and indents the new line.
503 `C-j' inserts a newline but does not indent. In some programming modes,
504 additional characters are electric (eg `{').
507 *** New buffer-local `electric-indent-local-mode'.
510 *** The behavior of `C-x TAB' (`indent-rigidly') has changed.
511 When invoked without a prefix argument, it now activates a transient
512 mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
513 the text indentation in the region. Typing any other key resumes
514 normal editing behavior.
517 *** `tab-stop-list' is now implicitly extended to infinity by repeating
518 the last step. Its default value is changed to nil, which means a tab
519 stop every `tab-width' columns.
522 ** New command `cycle-spacing' acts like a smarter `just-one-space'.
523 When called in succession, it cycles between spacing conventions:
524 one space, no spaces, original spacing.
527 ** The new function `fill-single-char-nobreak-p' can stop fill from breaking
528 a line after a one-letter word, which is an error in some typographical
529 conventions. To use it, add it to the `fill-nobreak-predicate' hook.
532 ** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
535 ** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
536 Most commands are still unaware of it, but kill/yank do work on the rectangle.
539 ** New option `visual-order-cursor-movement'.
540 If this is non-nil, cursor motion with arrow keys will follow the
541 visual order of characters on the screen: <left> always moves to the
542 left, <right> always moves to the right, disregarding the surrounding
543 bidirectional context.
548 *** All interactive commands that read a register (`copy-to-register', etc.)
549 now display a temporary window after `register-preview-delay' seconds
550 that summarizes existing registers. To disable this, set that option to nil.
551 Interactive commands that read registers and want to make use of this
552 should use `register-read-with-preview' to read register names.
555 *** New command `frameset-to-register' bound to `C-x r f', replacing
556 `frame-configuration-to-register'. It offers similar functionality,
557 plus enhancements like the ability to restore deleted frames.
558 (`frame-configuration-to-register' still exists, but no longer has a
562 *** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
566 ** New command `delete-duplicate-lines'.
567 This searches the region for identical lines, and removes all but one
568 copy of each repeated line. The lines need not be sorted.
571 ** `blink-matching-paren' now only highlights the matching open-paren
572 by default, instead of moving cursor. Set this variable to `jump' to
573 enable the old behavior.
576 * Changes in Specialized Modes and Packages in Emacs 24.4
579 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
581 ~/.emacs.d/timelog replaces ~/.timelog
582 ~/.emacs.d/vip replaces ~/.vip
583 ~/.emacs.d/viper replaces ~/.viper
584 ~/.emacs.d/ido.last replaces ~/.ido.last
585 ~/.emacs.d/kkcrc replaces ~/.kkcrc
586 ~/.emacs.d/quickurls replaces ~/.quickurls
587 ~/.emacs.d/idlwave/ replaces ~/.idlwave/
588 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
589 ~/.emacs.d/places replaces ~/.emacs-places
590 ~/.emacs.d/shadows replaces ~/.shadows
591 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
592 ~/.emacs.d/strokes replaces ~/.strokes
593 ~/.emacs.d/notes replaces ~/.notes
594 ~/.emacs.d/type-break replaces ~/.type-break
595 Also the following files used by the now obsolete otodo-mode.el:
596 ~/.emacs.d/todo-do replaces ~/.todo-do
597 ~/.emacs.d/todo-done replaces ~/.todo-done
598 ~/.emacs.d/todo-top replaces ~/.todo-top
600 ** Backtrace and debugger
603 *** New Lisp debugger command `v' (`debugger-toggle-locals') toggles the
604 display of local variables of the current stack frame.
607 *** The Lisp debugger's `e' command (`debugger-eval-expression') now includes
608 the lexical environment when evaluating the code in the context at point
609 (and so allows you to access lexical variables).
612 *** New minor mode `jit-lock-debug-mode' helps you debug code run via JIT Lock.
615 ** Battery information can now be retrieved from BSD's `apm' utility.
618 ** In the Buffer Menu, `M-s a C-o' shows matches for a regexp in marked buffers.
620 ** Calendar and Diary
623 *** New faces `calendar-weekday-header', `calendar-weekend-header',
624 and `calendar-month-header'.
627 *** New option `calendar-day-header-array'.
630 *** New variable `diary-from-outlook-function', used by the command
631 `diary-from-outlook'.
634 *** The variable `calendar-font-lock-keywords' is obsolete.
639 *** Calc by default now uses the Gregorian calendar for all dates, and
640 uses January 1, 1 AD as its day number 1. Previously Calc used the
641 Julian calendar for dates before September 14, 1752, and it used
642 December 31, 1 BC as its day number 1; the new scheme is more
643 consistent with Calendar's calendrical system and day numbering.
646 *** The new option `calc-gregorian-switch' lets you configure if
647 (and when) Calc switches from the Julian to the Gregorian calendar.
650 *** Support for ISO 8601 dates.
657 **** The cpp-root project now supports executing a compile command.
658 It can be set through the new :compile-command slot or the
659 buffer-local variable `compile-command'.
662 **** Better selection of include directories for the 'linux' project.
663 Include directories now support out-of-tree build directories and
664 target architecture auto-detection.
669 **** Improved detection of used namespaces in current scope in C++.
671 **** Parsing of default values for variables and function arguments in C/C++.
672 They are also displayed by the summarize feature in the mode line.
674 **** Improved parsing of function pointers in C/C++.
675 This also includes parsing of function pointers as function arguments.
677 **** Parsing of C/C++ preprocessor macros that open new scope.
678 For example, this enables parsing of macros that open new namespaces.
680 **** Support for 'this' pointer in inline member functions in C++.
685 *** New macro `cl-tagbody'.
686 This executes statements while allowing for control transfer to labels.
689 *** letf is now just an alias for cl-letf.
694 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
695 Hence, you can now enable it independently from those modes, and from
696 `transient-mark-mode'.
699 *** `cua-highlight-region-shift-only' is now obsolete.
700 You can disable `transient-mark-mode' to get the same result.
703 *** CUA's rectangles can now be used without CUA by calling the command
704 `cua-rectangle-mark-mode'.
709 *** Support for completion, ElDoc, and Flycheck has been added.
712 *** The current CFEngine syntax is parsed from "cf-promises -s json".
713 There is a fallback syntax available if you don't have cf-promises or
714 if your version doesn't support that option. See option `cfengine-cf-promises'.
717 ** Delete Selection mode can now be used without Transient Mark mode.
722 *** `desktop-save-mode' by default now auto-saves an existing desktop file
723 after `desktop-auto-save-timeout'. To disable this, customize that option
727 *** Desktop now saves and restores the frame/window configuration.
728 To disable this, set `desktop-restore-frames' to nil.
729 See also related options `desktop-restore-reuses-frames',
730 `desktop-restore-in-current-display', and `desktop-restore-forces-onscreen'.
733 ** New Dired minor mode `dired-hide-details-mode' toggles whether details,
734 such as file ownership or permissions, are visible in Dired buffers.
735 See the new options `dired-hide-details-hide-symlink-targets' and
736 `dired-hide-details-hide-information-lines' for customizing what to hide.
739 ** You can enable ElDoc inside the `eval-expression' minibuffer with:
740 (add-hook 'eval-expression-minibuffer-setup-hook 'eldoc-mode)
741 The results display in the mode line.
743 ** Electric Pair mode
746 *** New option `electric-pair-preserve-balance', enabled by default.
747 If non-nil, pairing/skipping only kicks in when that help the balance
748 of parentheses and quotes, i.e. the buffer should end up at least as
751 You can further control this behavior by adjusting the predicates
752 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
755 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
756 In `electric-pair-mode', the commands `backward-delete-char' and
757 `backward-delete-char-untabify' are now bound to electric variants
758 that delete the closer when invoked between adjacent pairs.
761 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
762 In `electric-pair-mode', inserting a newline between adjacent pairs
763 opens an extra newline after point, which is indented if
764 `electric-indent-mode' is also set.
767 *** New option `electric-pair-skip-whitespace', enabled by default.
768 This controls if skipping over closing delimiters should jump over any
769 whitespace slack. Setting it to `chomp' makes it delete this
770 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
773 *** New variables control the pairing in strings and comments.
774 You can customize `electric-pair-text-pairs' and
775 `electric-pair-text-syntax-table' to tweak pairing behavior inside
776 strings and comments.
779 ** New EPA option `epa-mail-aliases'.
780 You can set this to a list of email address aliases that `epa-mail-encrypt'
781 should use to find keys.
784 ** New ERC option `erc-accidental-paste-threshold-seconds'.
785 If set to a number, this can be used to avoid accidentally pasting large
786 amounts of data into the ERC input.
789 ** New ERT macro `skip-unless' allows skipping ERT tests.
790 See the ERT manual for details.
795 *** `eshell' now supports visual subcommands and options.
796 Eshell has been able to handle "visual" commands (interactive,
797 non-line oriented commands such as top that require display
798 capabilities not provided by eshell) by running them in an Emacs
799 terminal emulator. See `eshell-visual-commands'.
801 This feature has been extended to subcommands and options that make a
802 usually line-oriented command a visual command. Typical examples are
803 "git log" and "git <command> --help", which display their output in a
804 pager by default. See `eshell-visual-subcommands' and
805 `eshell-visual-options'.
808 *** New Eshell-Tramp module.
809 External su and sudo commands are now the default; the internal,
810 Tramp-using variants can still be used by enabling the eshell-tramp
814 ** New F90 mode option `f90-smart-end-names'.
817 Icomplete is now more similar to Ido.
820 *** Icomplete by default now applies to all forms of minibuffer completion.
821 The variable `icomplete-with-completion-tables' (now a user option)
822 controls this. To restore the old behavior, set it back to
823 '(internal-complete-buffer).
826 *** You can navigate through and select completions using the keys
827 from `icomplete-minibuffer-map'.
830 *** The string that separates potential completions is now a customizable
831 option (`icomplete-separator'). The default is " | " rather than ",".
834 *** New face `icomplete-first-match'; and new options
835 `icomplete-hide-common-prefix' and `icomplete-show-matches-on-no-input'.
838 *** The option `icomplete-show-key-bindings' has been removed.
843 *** An Ido user manual is now included.
846 *** The option `ido-use-virtual-buffers' can now take the value `auto'.
847 This means to use virtual buffers if the current ido input does not match
851 *** The variable `ido-decorations' can optionally have two new elements,
852 which are the brackets to use around the sole remaining completion.
857 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
858 visit the next image file and the previous image file in the same
859 directory, respectively.
862 *** New commands to show specific frames of multi-frame images.
863 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
864 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
867 *** New commands to speed up, slow down, or reverse animation.
868 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
869 speed up and slow down the animation. `a r' (`image-reverse-speed')
870 to reverse it and `a 0' (`image-reset-speed') to reset it.
873 *** The command `image-mode-fit-frame' deletes other windows.
874 When toggling, it restores the frame's previous window configuration.
875 It also has an optional frame argument, which can be used by Lisp
876 callers to fit the image to a frame other than the selected frame.
881 *** New global command `M-s h .' (`highlight-symbol-at-point') highlights
882 the symbol found near point.
885 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
886 will cycle through faces in `hi-lock-face-defaults' without prompting.
889 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
894 *** New Info face `info-index-match', used to highlight matches in index
895 entries displayed by `Info-index-next', `Info-virtual-index' and
899 *** The Info-edit command is obsolete. Editing Info nodes by hand
900 has not been relevant for some time.
905 *** New option `js-switch-indent-offset'.
908 *** Better indentation of multiple-variable declarations.
909 If a declaration spans several lines, variables on the following lines
910 are lined up to the first one.
913 *** Recognition and better indentation of continuations in array comprehensions.
916 ** MH-E has been updated to version 8.5 - see separate MH-E-NEWS file.
921 *** Font locking for Texinfo comments and new keywords.
923 *** Completion in Octave file buffers.
927 *** Jump to definition.
929 *** Documentation lookup/search.
932 ** OPascal mode is the new name for Delphi mode
935 *** All delphi-* variables and functions have been renamed to opascal-*.
936 Obsolete aliases exist for those likely to have been used externally.
939 *** The option `delphi-newline-always-indents' has been removed.
940 Use `electric-indent-mode' instead.
943 *** The TAB key runs the standard `indent-for-tab-command', not `delphi-tab'.
948 *** In the `list-packages' buffer, you can use `f' (`package-menu-filter')
949 to filter the list of packages by a keyword.
952 *** In the `describe-package' buffer, there are now buttons listing the
953 keywords related to the package. Click on a button to see other packages
954 related to that keyword.
957 *** The format of `archive-contents' files, generated by package
958 repositories, has changed to allow a new (fifth) element in the data
959 vectors, containing an associative list with extra properties.
960 (For example, `describe-package' uses the `:url' extra property to
961 display a "Homepage" header.)
964 ** In Prolog mode, `prolog-use-smie' has been removed,
965 along with the non-SMIE indentation code.
970 *** The new command `remember-notes' creates a buffer that is saved on exit.
971 You can use it as a more permanent *scratch* buffer.
974 *** Remember can now store notes in separate files.
975 To use this, add `remember-store-in-files' to the `remember-handler-functions'
976 option. The files are saved in `remember-data-directory' using
977 names specified by `remember-directory-file-name-format'.
982 *** Customize `rmail-mbox-format' to influence some minor aspects of
983 how Rmail displays non-MIME messages.
986 *** The `unrmail' command now converts from BABYL to mboxrd format,
987 rather than mboxo. Customize `unrmail-mbox-format' to change this.
992 *** Improved syntax highlighting and indentation.
995 *** New `electric-indent-mode' integration.
998 *** New option `ruby-encoding-magic-comment-style'.
1001 *** New option `ruby-custom-encoding-magic-comment-template'.
1004 *** New option `ruby-align-to-stmt-keywords'.
1007 *** New option `ruby-align-chained-calls'.
1010 *** More Ruby file types have been added to `auto-mode-alist'.
1012 ** Search and Replace
1015 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
1016 starts a symbol (identifier) incremental search forward with the
1017 symbol found near point added to the search string initially.
1020 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
1021 and adds it to the search string.
1024 *** `M-s i' in Isearch mode toggles whether search matches invisible text.
1027 *** `query-replace' skips invisible text when `search-invisible' is nil,
1028 and opens overlays with hidden text when `search-invisible' is `open'.
1031 *** A negative prefix arg of replacement commands replaces backward.
1032 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
1033 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
1036 *** By default, prefix arguments do not now terminate Isearch mode.
1037 Set `isearch-allow-prefix' to nil to restore old behavior.
1040 *** More Isearch commands accept prefix arguments, namely
1041 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
1042 `isearch-yank-line'.
1045 *** Word search now matches whitespace at the beginning/end
1046 of the search string if it contains leading/trailing whitespace.
1047 In an incremental word search or when using a non-nil LAX argument
1048 of `word-search-regexp', the lax matching can also match part of
1049 the first word (in addition to the lax matching of the last word).
1050 The same rules are now applied to the symbol search with the difference
1051 that it matches symbols, and non-symbol characters between symbols.
1054 ** New SES command `ses-rename-cell' allows assignment of names to SES cells.
1057 ** The shell.el option `explicit-bash-args' includes --noediting by default.
1058 All non-ancient Bash versions support this option.
1060 ** Shell Script mode
1063 *** The SMIE indentation engine is now used by default - see `sh-use-smie'.
1066 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
1071 *** You can customize the SMIE indentation of a mode via `smie-config'.
1072 The command `smie-config-guess' can help you derive the appropriate
1073 indentation settings, if you provide it with an indented sample file.
1074 Use `smie-config-save' to save the result.
1077 *** You can customize the SMIE indentation of a file by adding an entry to
1078 the file's local variables of the form: `eval: (smie-config-local '(RULES))'.
1081 *** New commands `smie-config-show-indent' and `smie-config-set-indent'.
1086 *** Improved login monitoring and appropriate response to login failures.
1087 New variable `sql-login-delay' defines maximum wait time for a connection.
1090 SQL*Plus script placeholders are properly highlighted and identified
1091 in `sql-placeholders-filter'. When starting SQL*Plus, `sql-oracle-options'
1092 are passed before the logon parameter, as required. The default now
1093 includes `-L', to limit the number of logon attempts per invocation.
1096 ** New Term mode option `term-suppress-hard-newline'.
1099 ** Todo mode has been rewritten and enhanced.
1100 The Todo mode user manual describes all commands and most user
1101 options. To support some of these features, a new file format is
1102 used, which is incompatible with the old format; however, you can
1103 convert old todo and done item files to the new format on initializing
1104 the first new todo file, or at any later time with the provided
1105 conversion command. The previous version of todo-mode.el has been
1106 renamed to otodo-mode.el and is now obsolete. New features include:
1108 *** Support for multiple todo files and archive files of done items.
1110 *** Renaming, reordering, moving, merging, and deleting categories.
1112 *** Sortable tabular summaries of categories and the item types they contain.
1114 *** Cross-category lists of items filtered by specific criteria.
1116 *** More fine-grained interaction with the Emacs diary, by being able to
1117 decide for each todo item whether it appears in the Fancy Diary display.
1119 *** Highly flexible new item insertion and item editing.
1121 *** Moving items between categories, storing done items in their category
1122 or in archive files, undoing or unarchiving done items.
1124 *** Reprioritizing items by inputting a numerical priority.
1126 *** Extensive customizability of operation and display, including many faces.
1131 *** `trace-function' and `trace-function-background' no longer prompt for
1132 the output buffer. Unless you use a prefix argument, they output to
1136 *** With a prefix argument, `trace-function' and `trace-function-background'
1137 will prompt for a "context". This is a Lisp expression, whose value at the
1138 time the function is entered/exited is printed along with the function's
1144 *** The experimental url syntax for remote file names has been removed.
1147 *** New connection method "adb", which allows to access Android
1148 devices by the Android Debug Bridge. The variable `tramp-adb-program'
1149 can be used to adapt the path of the "adb" program, if needed.
1152 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
1153 "scpc" and "rsyncc" are discontinued. The ssh option
1154 "ControlMaster=auto" is set automatically in all ssh-based methods,
1155 when possible. See `tramp-use-ssh-controlmaster-options'.
1158 *** Handlers for `file-acl' and `set-file-acl' for remote machines
1159 which support POSIX ACLs.
1162 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
1163 for remote machines which support filesystem notifications.
1166 ** New URL command `url-cookie-list' displays the current cookies,
1167 and allows you to interactively remove cookies.
1169 ** VC and related modes
1172 *** In VC directory mode, `D' displays diffs between VC-controlled
1173 whole tree revisions.
1176 *** In VC directory mode, `L' lists the change log for the current VC
1177 controlled tree in a window.
1180 *** In VC directory mode, `I' shows a log of changes that will be
1181 received with a pull operation.
1184 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
1185 under current version control system. When called with a prefix
1186 argument, you can remove a file from the ignored file list.
1191 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
1194 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
1197 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
1198 are obsolete. Customize the `woman-*' faces instead.
1200 ** Obsolete packages
1203 *** iswitchb.el; use icomplete-mode.
1206 *** longlines.el; use visual-line-mode.
1215 *** terminal.el; use term.el instead.
1218 *** the old version of todo-mode.el (renamed to otodo-mode.el).
1221 *** xesam.el (owing to the cancellation of the XESAM project).
1224 *** yow.el; use fortune.el or cookie1.el instead.
1227 * New Modes and Packages in Emacs 24.4
1230 ** New package `eww' is a built-in web browser.
1231 It is only available if Emacs is compiled with libxml2 support.
1234 ** New minor mode `superword-mode'.
1235 This overrides the default word motion commands to treat "symbol_words"
1236 as a single word, similar to what `subword-mode' does.
1239 ** New package nadvice.el offers lighter-weight advice facilities.
1242 *** add-function/remove-function, which can be used to add/remove code on any
1243 function-carrying place, such as process-filters or `<foo>-function' hooks.
1245 *** advice-add/advice-remove to add/remove a piece of advice on a named
1246 function, much like `defadvice' does.
1248 ** New package frameset.el.
1249 It provides a set of operations to save a frameset (the state of all
1250 or a subset of the existing frames and windows, somewhat similar to a
1251 frame configuration), both in-session and persistently, and restore it
1252 at some point in the future.
1255 ** New package filenotify.el provides an interface for file system
1256 notifications. It requires that Emacs be compiled with one of the
1257 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
1260 * Incompatible Lisp Changes in Emacs 24.4
1263 ** `kill-region' has lost its `yank-handler' optional argument.
1266 ** `(input-pending-p)' no longer runs other timers that are ready to run.
1267 The new optional CHECK-TIMERS parameter allows for the prior behavior.
1270 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
1273 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
1274 Some languages match those as »...«, and others as «...», so it is
1275 better for Emacs to stay neutral by default.
1278 ** In compiled Lisp files, the header no longer includes a timestamp.
1281 ** The default file coding for Emacs Lisp files is now utf-8.
1282 (See `file-coding-system-alist'.) In most cases, this change is
1283 transparent, but files that contain unusual characters without
1284 specifying an explicit coding system may fail to load with obscure
1285 errors. You should either convert them to utf-8 or add an explicit
1289 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
1290 It used to disable the minor mode, major mode, and text-property keymaps,
1291 whereas now it simply has higher precedence.
1294 ** Default process filters and sentinels are not nil any more.
1295 Instead they default to a function that does what the nil value used to do.
1298 ** `read-event' does not return decoded chars in ttys any more.
1299 As was the case in Emacs 22 and before, the decoding of terminal
1300 input, according to `keyboard-coding-system', is not performed in
1301 `read-event' any more. But unlike in Emacs 22, this decoding is still
1302 done before input-decode-map, function-key-map, etc.
1305 ** The option `inhibit-local-menu-bar-menus' has been removed.
1308 ** Frame-local variables that affect redisplay do not work any more.
1309 More specifically, redisplay does not bother to check for a frame-local
1310 value when looking up variables.
1313 ** nil and "unbound" are indistinguishable in `symbol-function'.
1314 `symbol-function' does not signal a `void-function' error any more.
1315 To determine if a symbol's function definition is void, use `fboundp'.
1318 ** `defadvice' does not honor the `freeze' flag and cannot advise
1319 special-forms any more.
1322 ** `dolist' no longer binds VAR while evaluating the RESULT form,
1323 when lexical binding is enabled. Previously, VAR was bound to nil,
1324 which often led to spurious unused-variable warnings.
1327 ** The return value of `backup-buffer' has changed.
1328 The second argument is no longer an SELinux context, instead it is an
1329 alist of extended attributes as returned by the new function
1330 `file-extended-attributes'. The attributes can be applied to another
1331 file using `set-file-extended-attributes'.
1334 ** By default `copy-file' no longer copies file permission bits to an
1335 existing destination; and it sets the file permission bits of a newly
1336 created destination to those of the source, masked by the default file
1337 permissions. To copy the file permission bits, pass t as the
1338 PRESERVE-PERMISSIONS argument of `copy-file'.
1341 ** `visited-file-modtime' now returns -1 for nonexistent files.
1342 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
1343 in the presence of files with negative time stamps.
1346 ** The cars of the elements in `interpreter-mode-alist' are now
1347 treated as regexps rather than literal strings.
1350 ** Overlay priority does not have to be nil or a non-negative integer.
1351 Overlay priority can be other kinds of Lisp objects. We didn't yet
1352 decide whether other types of values are stable enough, and therefore
1353 don't feel it's right to document them. For now, don't assume in your
1354 code that the values of overlay priority can only be either nil or an
1355 integer, always test them with an appropriate predicate to be one or
1359 * Lisp Changes in Emacs 24.4
1361 ** overlays-at can optionally sort its result by priority.
1364 ** The second argument of `eval' can now specify a lexical environment.
1367 ** New functions `special-form-p' and `macrop'.
1370 ** New macro `define-alternatives' can be used to define generic commands.
1371 Generic commands are interactive functions whose implementation can be
1372 selected among several alternatives, as a matter of user preference.
1375 ** If you give a symbol a `defalias-fset-function' property, `defalias'
1376 on that symbol will use the associated value as a function to call
1380 ** New variable `enable-dir-local-variables'.
1381 Directory-local variables are ignored if this is nil. This may be
1382 useful for modes that want to ignore directory-locals while still
1383 respecting file-local variables.
1386 ** New function `get-pos-property'.
1389 ** `read-regexp' now uses the new variable `read-regexp-defaults-function'
1390 as a function to call to provide default values.
1392 ** Completion changes
1395 *** The separator used by `completing-read-multiple' is now a regexp.
1396 The default `crm-separator' has been changed to allow surrounding spaces
1400 *** The `common-substring' argument of `display-completion-list',
1401 which has been documented as obsolete since Emacs 23.1, is now _really_
1402 obsolete, and no longer advertised. Instead either call
1403 `completion-hilit-commonality' to add the highlighting; or use
1404 `completion-all-completions', which returns highlighted strings.
1407 *** New function `completion-table-with-cache' is a wrapper for
1408 `completion-table-dynamic' that caches the result of the last lookup.
1411 *** New function `completion-table-merge' to combine several
1412 completion tables by merging their completions.
1415 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1416 display specified symbols as composed characters. E.g., in Emacs Lisp mode,
1417 this replaces the string "lambda" with the Greek lambda character.
1422 *** Functions to pop up menus and dialogs now work on all terminals,
1423 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1424 `message-box', `yes-or-no-p', etc.
1426 The function `display-popup-menus-p' will now return non-nil for a
1427 display or frame whenever a mouse is supported on that display or
1431 *** New hook `tty-setup-hook', run at the end of initializing a text terminal.
1434 *** The hook `term-setup-hook' is obsolete. It is entirely equivalent
1435 to `emacs-startup-hook'. See also the new `tty-setup-hook'.
1438 ** New hook `pre-redisplay-function'.
1441 ** New bool-vector set operation functions
1442 *** `bool-vector-exclusive-or'
1443 *** `bool-vector-union'
1444 *** `bool-vector-intersection'
1445 *** `bool-vector-set-difference'
1446 *** `bool-vector-not'
1447 *** `bool-vector-subsetp'
1448 *** `bool-vector-count-consecutive'
1449 *** `bool-vector-count-population'
1452 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1454 ** Error-handling changes
1457 *** New function `define-error'.
1460 *** `with-demoted-errors' takes an additional argument `format'.
1463 ** New macro `with-eval-after-load'.
1464 This is like the old `eval-after-load', but better behaved.
1467 ** New library subr-x.el with miscellaneous small utility functions
1468 *** `hash-table-keys'
1469 *** `hash-table-values'
1470 *** `string-blank-p'
1471 *** `string-empty-p'
1473 *** `string-reverse'
1474 *** `string-trim-left'
1475 *** `string-trim-right'
1477 *** `string-remove-prefix'
1478 *** `string-remove-suffix'
1481 ** Obsoleted functions
1484 *** `lisp-complete-symbol'
1485 *** `field-complete'
1486 *** `minibuffer-completion-contents'
1487 *** `isearch-nonincremental-exit-minibuffer'
1488 *** `isearch-filter-visible'
1489 *** `generic-make-keywords-list'
1490 *** `get-upcase-table' (use `case-table-get-table' instead).
1492 ** `with-wrapper-hook' is obsoleted by `add-function'.
1493 The few hooks that used with-wrapper-hook are replaced as follows:
1494 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1495 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1496 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1499 ** `byte-compile-interactive-only-functions' is now obsolete.
1500 To specify that a command should only be called interactively, give it
1501 a non-nil `interactive-only' property.
1504 ** `split-string' now takes an optional argument TRIM.
1505 The value, if non-nil, is a regexp that specifies what to trim from
1506 the start and end of each substring.
1509 ** New function `string-suffix-p'.
1511 ** File-handling changes
1514 *** Support for filesystem notifications.
1515 Emacs now supports notifications of filesystem changes, such as
1516 creation, modification, and deletion of files. This requires the
1517 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1518 MS-Windows systems, this is supported for Windows XP and newer
1522 *** The 9th element returned by `file-attributes' is now unspecified.
1523 Formerly, it was t if the file's gid would change if file were deleted
1524 and recreated. This value has been inaccurate for years on many
1525 platforms, and nobody seems to have noticed or cared.
1528 *** The 6th argument to `copy-file' has been renamed to
1529 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1530 Unix file permission bits as well as SELinux context.
1533 *** The function `file-ownership-preserved-p' now has an optional
1534 argument GROUP which causes it check for file group too. This can be
1535 used in place of the 9th element of `file-attributes'.
1538 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1539 argument, with the same interpretation as the returned value of
1540 `visited-file-modtime'.
1542 ** Revert and Autorevert changes
1545 *** The default values of `buffer-stale-function', `revert-buffer-function',
1546 and `revert-buffer-insert-file-contents-function' are no longer nil.
1547 Instead they default to functions that do what the nil value used to.
1550 *** `buffer-stale-function' is now used for buffers visiting files too.
1553 *** If Emacs is compiled with file notification support, it uses notifications
1554 instead of checking file time stamps. To disable this, set the user option
1555 `auto-revert-use-notify' to nil. Alternatively, you can specify a regular
1556 expression matching directories to be excluded from file notifications via
1557 `auto-revert-notify-exclude-dir-regexp'.
1560 *** The new user option `auto-revert-remote-files' enables reversion
1561 of remote files, if set to non-nil.
1566 *** The function `face-spec-set' is now like `setq' for face specs.
1567 Its third arg now accepts values specifying a face spec type (defface,
1568 custom, or override spec), and the relevant spec is set accordingly.
1571 *** New function `add-face-text-property', which can be used to
1572 conveniently prepend/append new face properties.
1575 *** Face specs set via Custom themes now replace the `defface' spec
1576 rather than inheriting from it. In other words, setting a face via a
1577 theme now behaves like setting it via Customize: you only need to
1578 specify the attributes that you want, you don't need to unset those
1579 that you don't want.
1582 *** New face characteristic (supports :underline (:style wave))
1583 specifies whether or not the terminal can display a wavy line.
1586 *** New face spec attribute :distant-foreground
1587 specifies foreground to use if background color is near the foreground
1588 color that would otherwise have been used.
1593 *** `image-animated-p' is now `image-multi-frame-p'.
1594 It returns non-nil for any image that contains multiple frames,
1595 whether or not it specifies a frame delay.
1598 *** New variable `image-default-frame-delay' gives the frame delay for
1599 animated images which do not specify a frame delay.
1602 *** New functions `image-current-frame' and `image-show-frame' for getting
1603 and setting the current frame of a multi-frame image.
1608 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1609 **** object-name -> eieio-object-name
1610 **** object-class -> eieio-object-class
1611 **** object-class-fast -> eieio--object-class
1612 **** object-class-name -> eieio-object-class-name
1613 **** object-name-string -> eieio-object-name-string
1614 **** object-num-slots -> eieio--object-num-slots
1615 **** object-set-name-string -> eieio-object-set-name-string
1616 **** class-of -> eieio-object-class
1617 **** class-name -> eieio-class-name
1618 **** class-parent -> eieio-class-parent
1619 **** class-parents -> eieio-class-parents
1620 **** class-parents-fast -> eieio-class-parents-fast
1621 **** class-children -> eieio-class-children
1622 **** class-num-slots -> eieio--class-num-slots
1623 **** class-precedence-list -> eieio-class-precedence-list
1624 **** class-direct-subclasses -> eieio-class-children
1625 **** class-direct-superclasses -> eieio-class-parents
1627 ** Changes in encoding and decoding of text
1630 *** New coding-system `prefer-utf-8'.
1631 This is like `undecided' but prefers UTF-8 on decoding if the text to
1632 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1633 any non-ASCII characters are automatically encoded as UTF-8.
1636 *** New attributes of coding-systems whose type is `undecided'.
1637 Two new attributes, `:inhibit-null-byte-detection' and
1638 `:inhibit-iso-escape-detection', determine how to detect encoding of
1639 text that includes null bytes and ISO-2022 escape sequences,
1640 respectively. Each of these attributes can be either nil, zero, or
1641 t. If it is t, decoding text ignores null bytes and, respectively,
1642 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1643 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1644 text is encoded in one of the ISO-2022 encodings, such as
1645 iso-2022-7bit. If the value is zero, Emacs consults the variables
1646 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1648 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1649 UTF-8 encoding and decoding, whenever possible.
1651 These attributes are only meaningful for coding-systems of type
1652 `undecided'. (The type of a coding-system is determined by its
1653 `:coding-type' attribute and can be accessed by calling the
1654 `coding-system-type' function.)
1657 ** The `time-to-seconds' alias to `float-time' is no longer marked obsolete.
1660 ** New functions `group-gid' and `group-real-gid'.
1663 ** The spelling of the rx.el category `chinese-two-byte' has been
1664 corrected (the first 'e' was missing).
1667 ** Minor internal changes to the details of lock files.
1668 The lock for DIR/FILE is now _always_ DIR/.#FILE.
1669 If DIR/.#FILE already exists and is not an Emacs lock file,
1670 Emacs makes no attempt to lock DIR/FILE. (Previously, it fell back to
1671 numbered lock files DIR/.#FILE.0...).
1672 On file systems that do not support symbolic links, the lock is now a
1673 regular file with contents being what would have been in the symlink.
1675 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1678 *** The package descriptor and name of global variables, constants,
1679 and functions should be separated by two hyphens if the symbol is not
1680 meant to be used by other packages.
1683 * Changes in Emacs 24.4 on Non-Free Operating Systems
1686 ** The procedure for building Emacs on MS-Windows has changed.
1687 It is now built by running the same configure script as on all other
1688 platforms. This requires the MSYS environment and MinGW development
1689 tools. See the updated instructions in nt/INSTALL for details.
1691 Using the Posix configure script and Makefile's also means a change in
1692 the directory structure of the Emacs installation on Windows. It is
1693 now the same as on GNU and Unix systems. In particular, the auxiliary
1694 programs, such as cmdproxy.exe and hexl.exe, are in
1695 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1696 version), version-independent site-lisp is in share/emacs/site-lisp,
1697 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1698 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1699 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1700 directories and will find the files in there automatically; there's no
1701 need to set any variables due to this change.)
1704 ** Emacs on Windows 2000 and later can now access files and directories
1705 whose names cannot be encoded in the current system codepage.
1707 The new variable `w32-unicode-filenames' controls this feature: if it
1708 is t, Emacs uses Unicode APIs to pass file names to system calls,
1709 which lifts the limitation of file names to the current locale.
1712 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1713 The backtrace is written to the 'emacs_backtrace.txt' file in the
1714 directory where Emacs was running.
1717 ** The variable `buffer-file-type' is no longer supported.
1718 Setting it has no effect, and %t in the mode-line format is ignored.
1719 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1720 modifying it has no effect.
1723 ** Lock files now work on MS-Windows.
1724 This helps to prevent losing your edits if the same file is being
1725 edited in another Emacs session or by another user. See the node
1726 "Interlocking" in the Emacs User Manual for the details. To disable
1727 file locking, customize `create-lockfiles' to nil.
1729 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1730 GNUstep and Mac OS X 10.4 use the old font backend.
1731 To use the old backend by default, do on the command line:
1732 % defaults write org.gnu.Emacs FontBackend ns
1734 ** Improved fullscreen support on Mac OS X.
1735 Emacs supports both native (Mac OS X 10.7 and newer) and "old style" fullscreen.
1736 Customize `ns-use-native-fullscreen' to change the style.
1737 For Mac OS X 10.7 and newer, native is the default.
1739 ** On Mac OS X 10.7 and newer, Emacs uses sRGB colorspace by default.
1740 Customize `ns-use-srgb-colorspace' to disable this. Note that this
1741 does not apply to images.
1744 * Installation Changes in Emacs 24.3
1746 ** The default X toolkit is now Gtk+ version 3.
1747 If you don't pass `--with-x-toolkit' to configure, or if you use
1748 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1749 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1750 You can explicitly require a specific version by passing
1751 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1753 ** New configure option `--enable-link-time-optimization', to utilize
1754 an appropriate feature provided by GCC since version 4.5.0.
1756 ** New configure option `--without-all' to disable most of the optional
1757 features (image support, etc.) that are normally enabled by default.
1759 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1760 Emacs). If building with GCC, this enables compile-time checks that
1761 warn/give errors about possibly-questionable C code. On a recent GNU
1762 system there should be no warnings; on older and on non-GNU systems
1763 the results may be useful to developers.
1765 ** The configure option `--enable-use-lisp-union-type' has been
1766 renamed to `--enable-check-lisp-object-type', as the resulting
1767 Lisp_Object type no longer uses a union to implement the compile time
1768 check that this option enables.
1770 ** The configure option `--disable-maintainer-mode' has been removed,
1771 as it was confusingly-named and rarely useful.
1773 ** The configure options `--program-prefix', `--program-suffix', and
1774 `--program-transform-name' apply to more than just the installed
1775 binaries. Now they also affect the man pages, icons, and the
1776 etc/emacs.desktop file; but not the info pages, since this would break
1777 links between the various manuals.
1779 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1780 overwriting "emacs" in the installation bin/ directory with a link
1783 ** Emacs uses libtinfo in preference to libncurses, if available.
1785 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1786 /usr/pkg/lib to the linker search path. You must add them yourself if
1789 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1790 (from the bin and libexec directories, respectively). The former is
1791 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1794 * Startup Changes in Emacs 24.3
1796 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1797 lisp/ directory. There should not be any there anyway. If you have
1798 been adding them there, put them somewhere else; e.g., site-lisp.
1800 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1803 * Changes in Emacs 24.3
1807 *** `C-h f' (`describe-function') can now perform autoloading.
1808 When this command is called for an autoloaded function whose docstring
1809 contains a key substitution construct, that function's library is
1810 automatically loaded, so that the documentation can be shown
1811 correctly. To disable this, set `help-enable-auto-load' to nil.
1813 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1814 even after their associated libraries have been loaded (and the
1815 autoloads have been redefined as functions).
1819 *** Images displayed via ImageMagick now support transparency and the
1820 :background image specification property.
1822 *** When available, ImageMagick support is automatically enabled.
1823 It is no longer necessary to call `imagemagick-register-types'
1824 explicitly to install ImageMagick image types; that function is called
1825 automatically at startup, or when customizing an imagemagick- option.
1827 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1828 ImageMagick to view images. (You must call `imagemagick-register-types'
1829 afterwards if you do not use customize to change this.)
1831 *** The new variable `imagemagick-enabled-types' also affects which
1832 ImageMagick types are treated as images. The function
1833 `imagemagick-filter-types' returns the list of types that will be
1838 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1839 next and previous path separator, respectively.
1841 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1842 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1843 non-nil before enabling the mode.
1847 *** New option `mode-line-default-help-echo' specifies the help text
1848 (shown in a tooltip or in the echo area) for any part of the mode line
1849 that does not have its own specialized help text.
1851 *** You can now click mouse-3 in the coding system indicator to invoke
1852 `set-buffer-file-coding-system'.
1854 ** Server and client
1856 *** emacsclient now obeys string values for `initial-buffer-choice',
1857 if it is told to open a new frame without specifying any file to visit
1858 or expression to evaluate.
1860 *** New option `server-auth-key' specifies a shared server key.
1862 ** Emacs now generates backtraces on fatal errors.
1863 On encountering a fatal error, Emacs now outputs a textual description
1864 of the fatal signal, and a short backtrace on platforms like glibc
1865 that support backtraces.
1867 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1868 This minor mode replaces `toggle-read-only', which is now obsolete.
1870 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1871 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1872 respectively, without exiting from the prompt.
1874 ** In the Package Menu, newly-available packages are listed as "new",
1875 and sorted above the other "available" packages by default.
1877 ** If your Emacs was built from a repository checkout, the new variable
1878 `emacs-bzr-version' contains information about the bzr revision used.
1880 ** New option `create-lockfiles' specifies usage of lockfiles.
1881 It defaults to t. Changing it to nil inhibits the creation of lock
1882 files (use this with caution).
1884 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1885 variables on remote hosts.
1887 ** The entry for PCL-CVS has been removed from the Tools menu.
1888 The PCL-CVS commands are still available via the keyboard.
1890 ** Using "unibyte: t" in Lisp source files is obsolete.
1891 Use "coding: raw-text" instead.
1893 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1894 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1895 The previous binding, introduced in Emacs 24.1, was a mistake, because
1896 `C-c LETTER' bindings are reserved for user customizations.
1898 ** Internationalization
1900 *** New language environment: Persian.
1902 *** New input method `vietnamese-vni'.
1904 ** Nextstep (GNUstep / Mac OS X) port
1906 *** Support for fullscreen and the frame parameter fullscreen.
1908 *** A file dialog is used for open/save operations initiated from the
1912 * Editing Changes in Emacs 24.3
1914 ** Search and Replace
1916 *** Non-regexp Isearch now performs "lax" space matching.
1917 Each sequence of spaces in the supplied search string may match any
1918 sequence of one or more whitespace characters, as specified by the
1919 variable `search-whitespace-regexp'. (This variable is also used by a
1920 similar existing feature for regexp Isearch.)
1922 *** New Isearch command `M-s SPC' toggles lax space matching.
1923 This applies to both ordinary and regexp Isearch.
1925 *** New option `replace-lax-whitespace'.
1926 If non-nil, `query-replace' uses flexible whitespace matching too.
1929 *** Global `M-s _' starts a symbol (identifier) incremental search,
1930 and `M-s _' in Isearch toggles symbol search mode.
1931 `M-s c' in Isearch toggles search case-sensitivity.
1933 ** Navigation commands
1935 *** New binding `M-g c' for `goto-char'.
1937 *** New binding `M-g TAB' for `move-to-column'.
1939 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1940 interactively with no prefix arg. Previously, it moved to column 1.
1942 ** New option `yank-handled-properties' allows processing of text
1943 properties on yanked text, in ways that are more general than just
1944 removing them (as is done by `yank-excluded-properties').
1946 ** New option `delete-trailing-lines' specifies whether
1947 M-x delete-trailing-whitespace should delete trailing lines at the end
1948 of the buffer. It defaults to t.
1950 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1952 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1953 `ucs-insert' is now an obsolete alias for `insert-char'.
1955 ** The `z' key no longer has a binding in most special modes.
1956 It used to be bound to `kill-this-buffer', but `z' is too easy to
1959 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1960 It copies the region-rectangle as the last rectangle kill.
1964 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1966 *** New option `register-separator' specifies the register containing
1967 the text to put between collected texts for use with
1968 M-x append-to-register and M-x prepend-to-register.
1971 * Changes in Specialized Modes and Packages in Emacs 24.3
1973 ** Common Lisp emulation (CL)
1975 *** CL's main entry is now (require 'cl-lib).
1976 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1977 i.e., all its definitions have the "cl-" prefix (and internal definitions
1978 use the "cl--" prefix).
1980 If `cl' provided a feature under the name `foo', then `cl-lib'
1981 provides it under the name `cl-foo' instead; with the exceptions of the
1982 few `cl' definitions that had to use `foo*' to avoid conflicts with
1983 pre-existing Elisp entities. These have been renamed to `cl-foo'
1984 rather than `cl-foo*'.
1986 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1987 provide the old, non-prefixed names. Some exceptions are listed below:
1989 *** `cl-flet' is not like `flet' (which is deprecated).
1990 Instead it obeys the behavior of Common-Lisp's `flet'.
1991 In particular, in cl-flet function definitions are lexically scoped,
1992 whereas in flet the scoping is dynamic.
1994 *** `cl-labels' is slightly different from `labels'.
1995 The difference is that it relies on the `lexical-binding' machinery
1996 (as opposed to the `lexical-let' machinery used previously) to capture
1997 definitions in closures, so such closures will only work if `lexical-binding'
2000 *** `cl-letf' is not exactly like `letf'.
2001 The only difference is in details that relate to some deprecated usage
2002 of `symbol-function' in place forms.
2004 *** `progv' was rewritten to use the `let' machinery.
2005 A side effect is that variables without corresponding values are bound
2006 to nil rather than being made unbound.
2008 *** The following methods of extending `setf' are obsolete
2009 (use features from gv.el instead):
2010 `define-modify-macro' (use `gv-letplace')
2011 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
2012 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
2013 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
2017 *** Changes are now highlighted using the same color scheme as in
2018 modern VCSes. Deletions are displayed in red (new faces
2019 `diff-refine-removed' and `smerge-refined-removed', and new definition
2020 of `diff-removed'), insertions in green (new faces `diff-refine-added'
2021 and `smerge-refined-added', and new definition of `diff-added').
2023 *** The variable `diff-use-changed-face' defines whether to use the
2024 face `diff-changed', or `diff-removed' and `diff-added' to highlight
2025 changes in context diffs.
2027 *** The new command `diff-delete-trailing-whitespace' removes trailing
2028 whitespace introduced by a diff.
2030 ** Ediff now uses the same color scheme as Diff mode.
2034 A new version of python.el, which provides several new features, including:
2035 per-buffer shells, better indentation, Python 3 support, and improved
2036 shell-interaction compatible with iPython (and virtually any other
2039 *** Some user options have been replaced/renamed, including (old -> new):
2040 **** python-indent -> python-indent-offset
2041 **** python-guess-indent -> python-indent-guess-indent-offset
2042 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
2043 **** python-use-skeletons -> python-skeleton-autoinsert
2045 *** Some user options have been removed, including:
2047 **** `python-indent-string-contents': Strings are never indented.
2049 **** `python-honour-comment-indentation':
2050 Comments are always considered as indentation markers.
2052 **** `python-continuation-offset': Indentation is automatically
2053 calculated in a pep8 compliant way depending on the context.
2055 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
2056 Have no direct mapping as the shell interaction is completely different.
2058 **** `python-python-command', `python-jython-command':
2059 Replaced by `python-shell-interpreter'.
2061 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
2062 `python-pdbtrack-minor-mode-string', `python-source-modes':
2065 *** Some commands have been replaced (old -> new):
2066 **** python-insert-class -> python-skeleton-class
2067 **** python-insert-def -> python-skeleton-def
2068 **** python-insert-for -> python-skeleton-for
2069 **** python-insert-if -> python-skeleton-if
2070 **** python-insert-try/except -> python-skeleton-try
2071 **** python-insert-try/finally -> python-skeleton-try
2072 **** python-insert-while -> python-skeleton-while
2073 **** python-find-function -> python-nav-jump-to-defun
2074 **** python-next-statement -> python-nav-forward-sentence
2075 **** python-previous-statement -> python-nav-backward-sentence
2076 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
2077 **** python-end-of-defun-function -> python-nav-end-of-defun
2078 **** python-send-buffer -> python-shell-send-buffer
2079 **** python-send-defun -> python-shell-send-defun
2080 **** python-send-region -> python-shell-send-region
2081 **** python-send-region-and-go -> emulate with python-shell-send-region
2082 and python-shell-switch-to-shell
2083 **** python-send-string -> python-shell-send-string
2084 **** python-switch-to-python -> python-shell-switch-to-shell
2085 **** python-describe-symbol -> python-eldoc-at-point
2089 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
2091 *** The D-Bus object manager interface is implemented.
2093 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
2094 if their value does not fit into Emacs's integer range.
2096 *** The function `dbus-call-method' is now non-blocking.
2097 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
2099 *** Signals can also be sent as unicast messages.
2101 *** The argument list of `dbus-register-signal' has been extended,
2102 according to the new match rule types of D-Bus.
2104 *** `dbus-init-bus' supports private connections.
2106 *** There is a new function `dbus-setenv'.
2108 ** `desktop-path' no longer includes the "." directory.
2109 Desktop files are now located in ~/.emacs.d by default.
2113 *** `dired-do-async-shell-command' executes each file sequentially
2114 if the command ends in `;' (when operating on multiple files).
2115 Otherwise, it executes the command on each file in parallel.
2117 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
2118 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
2121 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
2122 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
2123 mark/unmark/flag all files in the active region.
2125 *** The minibuffer default for `=' (`dired-diff') has changed.
2126 It is now the backup file for the file at point, if one exists.
2127 In Transient Mark mode the default is the file at the active mark.
2129 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
2130 The global binding for `M-=', `count-words-region' is in effect.
2134 *** New module "notifications", which can send a notification when you
2135 receive a private message or your nickname is mentioned.
2137 *** ERC will look up server/channel names via auth-source and use any
2140 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
2141 only applies to messages sent by lurkers.
2143 ** reStructuredText mode
2145 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
2146 fontification, comment handling, and customization have all been revised
2149 *** Support for `imenu' and `which-function-mode'.
2151 *** The reStructuredText syntax is more closely covered.
2152 Sphinx support has been improved.
2154 *** `rst-insert-list' inserts new list or continues existing lists.
2156 *** A negative prefix argument always works for `rst-adjust'.
2158 *** The window configuration is reset after displaying a TOC.
2160 *** The constant `rst-version' describes the rst.el package version.
2164 *** Support for percent literals and recognition of regular expressions
2165 in method calls without parentheses with more methods, including Cucumber
2168 *** Improved syntax highlighting and indentation.
2170 *** New command `ruby-toggle-block', bound to `C-c {'.
2172 *** Some non-standard keybindings/commands have been removed:
2174 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
2176 **** `ruby-mark-defun'; use `mark-defun'.
2178 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
2179 appropriate settings for the variables `beginning-of-defun-function'
2180 and `end-of-defun-function'.
2182 **** Non-standard keybindings for `backward-kill-word', `comment-region',
2183 `reindent-then-newline-and-indent' and `newline' have been removed.
2185 ** Shell Script mode
2187 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
2189 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
2191 *** `sh-use-smie' lets you choose a new indentation and navigation code.
2195 *** The free software compiler GHDL is supported (and now the default).
2197 *** Support for the VHDL-AMS packages has been added/updated.
2199 *** Updated to the 2002 revision of the VHDL standard.
2201 *** Accepts \r and \f as whitespace.
2205 *** The faces used by Apropos are now directly customizable.
2206 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
2207 see the `apropos' Custom group for details.
2209 *** The old options whose values specified faces to use have been removed
2210 (i.e. `apropos-symbol-face', `apropos-keybinding-face', `apropos-label-face',
2211 `apropos-match-face' and `apropos-property-face'.).
2215 *** This package has been rewritten to use Tabulated List mode.
2217 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
2218 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
2222 *** Algebraic simplification mode is now the default.
2223 To restrict to the limited simplifications given by the former
2224 default simplification mode, use `m I'.
2228 *** You can customize the header text that appears above each calendar month.
2229 See the variable `calendar-month-header'.
2231 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
2233 *** The calendars produced by cal-html include holidays.
2234 Customize `cal-html-holidays' to change this.
2238 *** The major modes from the parser generators "Bovine" and "Wisent"
2239 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
2240 are in `auto-mode-alist', and the corresponding manuals are included.
2244 **** Menu support for the "Configuration" feature. This allows users to
2245 choose the active configuration (such as debug or install) from the menu.
2247 **** New command `ede-set' to interactively set project-local variables.
2249 **** Support for compiling, debugging, and running in "generic" projects.
2251 **** Autoconf editing support for M4 macros with complex arguments.
2253 **** Compilation support for the "linux" project type.
2255 **** "simple" projects have been removed; use "generic" projects instead.
2259 **** Support for parsing #include statements inside a namespace in C/C++.
2261 **** Improved support for 'extern "C"' declarations in C/C++.
2263 **** The ability to ignore more common special C/C++ preprocessor symbols,
2264 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
2265 If available, include cdefs.h as an additional source of preprocessor symbols.
2267 **** Improved C/C++ function pointer parsing.
2269 **** In Python, support for converting imports to include file names.
2271 **** Ability to dynamically determine the Python load path.
2273 **** Support for the Python 'WITH' and 'AT' keywords.
2275 **** Improved tooltip completion.
2279 **** The SRecode manual is now included.
2281 **** Tag generation supports constructor/destructor settings and system
2282 include differentiation.
2284 **** Addition of 'Framework' support: Frameworks are specified when a
2285 particular kind of library (such as Android) is needed in a common language
2288 **** Support for nested templates and let variables override based on priority.
2290 **** Support for merging tables from multiple related modes, such as
2291 default -> c++ -> arduino.
2293 ** Compile has a new option `compilation-always-kill'.
2297 *** `custom-reset-button-menu' now defaults to t.
2299 *** Non-option variables are never matched in `customize-apropos' and
2300 `customize-apropos-options' (i.e., the prefix argument does nothing for
2301 these commands now).
2305 *** The variables `term-default-fg-color' and `term-default-bg-color'
2306 are now deprecated in favor of the customizable face `term'.
2308 *** You can customize how to display ANSI terminal colors and styles
2309 by customizing the corresponding `term-color-<COLOR>',
2310 `term-color-underline' and `term-color-bold' faces.
2314 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
2316 *** Remote processes are now also supported on remote MS-Windows hosts.
2320 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
2321 Previously, this slot stored semicolon-separated attribute-value pairs
2322 appended to some imap URLs, but this is not compatible with RFC 3986.
2323 So now the `filename' slot stores the entire path and query components,
2324 and the `attributes' slot is always nil.
2326 *** New function `url-encode-url' for encoding a URI string.
2327 The `url-retrieve' function now uses this to encode its URL argument,
2328 in case that is not properly encoded.
2330 ** notifications.el supports now version 1.2 of the Notifications API.
2331 The function `notifications-get-capabilities' returns the supported
2334 ** Flymake uses fringe bitmaps to indicate errors and warnings.
2335 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
2336 `flymake-warning-bitmap'.
2338 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
2339 specifying URL types that should be converted to remote file names at
2340 the FFAP prompt. The default is now '("ftp").
2342 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
2343 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
2345 ** New option `mouse-avoidance-banish-position' specifies where the
2346 `banish' mouse avoidance setting moves the mouse.
2348 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
2349 closing brackets to be aligned with the line of the opening bracket.
2351 ** In Proced mode, new command `proced-renice' renices marked processes.
2353 ** New option `async-shell-command-buffer' specifies the buffer to use
2354 for a new asynchronous `shell-command' when the default output buffer
2355 `*Async Shell Command*' is already in use.
2357 ** SQL mode has a new option `sql-db2-escape-newlines'.
2358 If non-nil, newlines sent to the command interpreter will be escaped
2359 by a backslash. The default does not escape the newlines and assumes
2360 that the sql statement will be terminated by a semicolon.
2362 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
2363 (and modes that derive from it), sorts the column at point, or the Nth
2364 column if a numeric prefix argument is given.
2366 ** `which-func-modes' now defaults to t, so Which Function mode, when
2367 enabled, applies to all applicable major modes.
2369 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
2372 ** Follow mode no longer works by using advice.
2373 The option `follow-intercept-processes' has been removed.
2375 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
2377 ** Hooks renamed to avoid obsolete "-hooks" suffix:
2378 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
2379 *** semantic-change-hooks -> semantic-change-functions
2380 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
2381 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
2382 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
2383 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
2384 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
2385 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
2386 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
2387 *** rcirc-activity-hooks -> rcirc-activity-functions
2388 *** rcirc-print-hooks -> rcirc-print-functions
2389 *** dbus-event-error-hooks -> dbus-event-error-functions
2390 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
2391 *** checkdoc-style-hooks -> checkdoc-style-functions
2392 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2393 *** archive-extract-hooks -> archive-extract-hook
2394 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2395 *** hfy-post-html-hooks -> hfy-post-html-hook
2396 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2397 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2398 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2399 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2401 ** Obsolete packages
2404 In most cases, assoc+member+push+delq work just as well.
2405 And in any case it's just a terrible package: ugly semantics, terrible
2406 inefficiency, and not namespace-clean.
2415 * Incompatible Lisp Changes in Emacs 24.3
2417 ** Docstrings starting with `*' no longer indicate user options.
2418 Only variables defined using `defcustom' are considered user options.
2419 The function `user-variable-p' is now an obsolete alias for
2420 `custom-variable-p'.
2422 ** The return values of `defalias', `defun' and `defmacro' have changed,
2423 and are now undefined. For backwards compatibility, `defun' and
2424 `defmacro' currently return the name of the newly defined
2425 function/macro, but this should not be relied upon.
2427 ** `random' by default now returns a different random sequence in
2428 every Emacs run. Use `(random S)', where S is a string, to set the
2429 random seed to a value based on S, in order to get a repeatable
2430 sequence in later calls.
2432 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2433 that substring is inserted literally even if the LITERAL arg is
2434 non-nil, instead of causing an error to be signaled.
2436 ** `select-window' now always makes the window's buffer current.
2437 It does so even if the window was selected before.
2439 ** The function `x-select-font' can return a font spec, instead of a
2440 font name as a string. Whether it returns a font spec or a font name
2441 depends on the graphical library.
2443 ** `face-spec-set' no longer sets frame-specific attributes when the
2444 third argument is a frame (that usage was obsolete since Emacs 22.2).
2446 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2448 ** The CL package's `get-setf-method' function no longer exists.
2449 Generalized variables are now part of core Emacs Lisp, and implemented
2450 differently to the way cl.el used to do it. It is not possible to
2451 define a compatible replacement for `get-setf-method'. See the file
2452 gv.el for internal details of the new implementation.
2454 ** The arguments of `dbus-register-signal' are no longer just strings,
2455 but keywords or keyword-string pairs. The old argument list will
2456 still be supported for Emacs 24.x.
2458 ** Miscellaneous name changes
2459 Some Lisp symbols have been renamed to correct their spelling,
2460 or to be more consistent with standard Emacs terminology.
2462 *** Renamed functions
2463 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2464 **** inactivate-input-method -> deactivate-input-method
2465 **** quail-inactivate -> quail-deactivate
2466 **** robin-inactivate -> robin-deactivate
2467 **** viper-inactivate-input-method -> viper-deactivate-input-method
2468 **** viper-inactivate-input-method-action ->
2469 viper-deactivate-input-method-action
2470 **** ucs-input-inactivate -> ucs-input-deactivate
2473 The old hooks are still supported for backward compatibility, but they
2474 are deprecated and will be removed eventually.
2475 **** input-method-inactivate-hook -> input-method-deactivate-hook
2476 **** robin-inactivate-hook -> robin-deactivate-hook
2477 **** quail-inactivate-hook -> quail-deactivate-hook
2479 *** Renamed variables
2480 **** follow-deactive-menu -> follow-inactive-menu
2481 **** inactivate-current-input-method-function ->
2482 deactivate-current-input-method-function
2484 ** Some obsolete functions, variables, and faces have been removed:
2485 *** `last-input-char', `last-command-char', `unread-command-char'
2486 *** `facemenu-unlisted-faces'
2487 *** `rmail-decode-mime-charset'
2488 *** `iswitchb-read-buffer'
2489 *** `sc-version', `sc-submit-bug-report'
2490 *** `set-char-table-default'
2491 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2492 *** `compile-internal'
2494 *** `mode-line-inverse-video'
2495 *** `follow-mode-off-hook'
2496 *** `cvs-commit-buffer-require-final-newline'
2497 (use `log-edit-require-final-newline' instead)
2498 *** `cvs-changelog-full-paragraphs'
2499 (use `log-edit-changelog-full-paragraphs' instead)
2500 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2501 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2502 *** `vc-master-templates' (use `vc-handled-backends' instead)
2503 *** `vc-checkout-carefully'
2506 * Lisp Changes in Emacs 24.3
2508 ** CL-style generalized variables are now in core Elisp.
2509 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2510 You can define your own generalized variables using `gv-define-simple-setter',
2511 `gv-define-setter', etc.
2513 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2514 This can significantly speed up execution of non-byte-compiled code,
2515 but can also bump into previously unnoticed cyclic dependencies.
2516 These are generally harmless: they will simply cause the macro calls
2517 to be left for later expansion (as before), but will result in a
2518 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2519 You may wish to restructure your code so this does not happen.
2521 ** New sampling-based Elisp profiler.
2522 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2523 When finished, use M-x profiler-stop. The sampling rate can be based on
2524 CPU time or memory allocations.
2526 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2527 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2529 ** New macros `setq-local' and `defvar-local'.
2531 ** Face underlining can now use a wave.
2533 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2534 of `read-regexp' accepts a string ending with a colon and space, and its
2535 second argument DEFAULTS can be a list of strings accessible via `M-n'
2536 in the minibuffer ahead of other hard-coded useful regexp-related values.
2537 More commands use `read-regexp' now to read their regexp arguments.
2541 *** New function `completion-table-with-quoting' to handle completion
2542 in the presence of quoting, such as file completion in shell buffers.
2544 *** New function `completion-table-subvert' to use an existing completion
2545 table, but with a different prefix.
2549 *** New error type and new function `user-error'.
2550 These do not trigger the debugger.
2552 *** New option `debugger-bury-or-kill', saying what to do with the
2553 debugger buffer when exiting debug.
2555 *** Set `debug-on-message' to enter the debugger when a certain
2556 message is displayed in the echo area. This can be useful when trying
2557 to work out which code is doing something.
2559 *** New var `inhibit-debugger', automatically set to prevent accidental
2560 recursive invocations.
2564 *** New command `fit-frame-to-buffer' adjusts the frame height to
2567 *** The command `fit-window-to-buffer' can adjust the frame height
2568 if the new option `fit-frame-to-buffer' is non-nil.
2570 *** New macro `with-temp-buffer-window', similar to
2571 `with-output-to-temp-buffer'.
2573 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2576 *** New option `switch-to-buffer-preserve-window-point' to restore a
2577 window's point when switching buffers.
2579 *** New display action alist entries `window-height' and `window-width'
2580 specify the size of new windows created by `display-buffer'.
2582 *** New display action alist entry `pop-up-frame-parameters', if
2583 non-nil, specifies frame parameters to give any newly-created frame.
2585 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2586 tells display action functions to avoid changing which frame is
2589 *** New display action alist entry `previous-window', if non-nil,
2590 specifies window to reuse in `display-buffer-in-previous-window'.
2592 *** New display action functions `display-buffer-below-selected',
2593 and `display-buffer-in-previous-window'.
2595 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2596 now accept a third argument to avoid choosing the selected window.
2598 *** Additional values recognized for option `window-combination-limit'.
2600 *** The following variables are obsolete, as they can be replaced by
2601 appropriate entries in the `display-buffer-alist' function introduced
2603 **** `dired-shrink-to-fit'
2604 **** `display-buffer-reuse-frames'
2605 **** `display-buffer-function'
2606 **** `special-display-buffer-names'
2607 **** `special-display-frame-alist'
2608 **** `special-display-function'
2609 **** `special-display-regexps'
2613 *** `current-time-string' no longer requires that its argument's year
2614 must be in the range 1000..9999. It now works with any year supported
2615 by the underlying C implementation.
2617 *** `current-time' now returns extended-format time stamps
2618 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2619 PSEC is typically a multiple of 1000 on current machines. Other
2620 functions that use this format, such as `file-attributes' and
2621 `format-time-string', have been changed accordingly. Old-format time
2622 stamps are still accepted.
2624 *** The format of timers in `timer-list' and `timer-idle-list' is now
2625 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2626 The PSECS slot is new, and uses picosecond resolution. It can be
2627 accessed via the new `timer--psecs' accessor.
2629 *** Last-modified time stamps in undo lists now are of the form
2630 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2634 *** Improved security when handling persistent objects:
2636 **** `eieio-persistent-read' now features optional arguments for specifying
2637 the class to load, as well as a flag stating whether subclasses are allowed;
2638 if provided, other classes will be rejected by the reader. For
2639 compatibility with existing code, if the class is omitted only a
2642 **** New specialized reader for pulling in classes and signaling errors
2643 without evaluation of suspicious code.
2645 **** All slots that contain objects must have a :type. Slots with lists
2646 of objects must use a new type predicate for a list of an object type.
2648 *** Support for `find-function' and similar utilities, through the addition
2649 of filename support to generated symbols.
2651 ** Floating point functions now always return special values like NaN,
2652 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2653 Previously, they returned NaNs on some platforms but signaled errors
2654 on others. The affected functions are acos, asin, tan, exp, expt,
2655 log, log10, sqrt, and mod.
2657 ** New fringe bitmap `exclamation-mark'.
2659 ** Miscellaneous changes to special forms and macros
2661 *** `defun' and `defmacro' are now macros rather than special forms.
2663 *** `kbd' is now a function rather than a macro.
2665 ** Miscellaneous new functions
2667 *** `set-temporary-overlay-map' sets up a temporary keymap that
2668 takes precedence over most other maps for a short while (normally one key).
2670 *** `autoloadp' tests if its argument is an autoloaded object.
2672 *** `autoload-do-load' performs the autoloading operation.
2674 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2676 *** `file-name-base' returns a file name sans directory and extension.
2678 *** `function-get' fetches a function property, following aliases.
2680 *** `posnp' tests if an object is a `posn'.
2682 *** `system-users' returns the user names on the system.
2684 *** `system-groups' returns the group names on the system.
2686 *** `tty-top-frame' returns the topmost frame of a text terminal.
2688 ** The following functions and variables are obsolete:
2689 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2690 *** `buffer-has-markers-at'
2691 *** `macro-declaration-function' (use `macro-declarations-alist')
2692 *** `window-system-version' (provides no useful information)
2693 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2694 *** `query-replace-interactive'
2695 *** `font-list-limit' (has had no effect since Emacs < 23)
2698 * Changes in Emacs 24.3 on Non-Free Operating Systems
2700 ** Cygwin builds can use the native MS Windows user interface.
2701 Pass `--with-w32' to configure. The default remains the X11 interface.
2703 ** Two new functions are available in Cygwin builds:
2704 `cygwin-convert-file-name-from-windows' and
2705 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2706 code to access the Cygwin file-name mapping machinery to convert
2707 between Cygwin and Windows-native file and directory names.
2709 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2710 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2711 `mouse-autoselect-window'.
2713 ** On MS Windows Vista and later Emacs now supports symbolic links.
2715 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2716 support for libxml2, even if its presence is detected.
2718 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2720 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2721 directories to the search path. You must add them yourself if you want them.
2724 * Changes in Emacs 24.2
2726 ** This is mainly a bug-fix release.
2729 * Installation Changes in Emacs 24.1
2731 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2732 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2733 also depend on Gtk+. You can disable them with --without-rsvg and
2736 ** Emacs can be compiled with GnuTLS support.
2737 This happens by default if a suitably recent version of the library is
2738 found at build time. To prevent this, use the configure option
2739 `--without-gnutls'. See below for GnuTLS features.
2741 ** Emacs can be compiled with SELinux support.
2742 This happens by default if a suitably recent version of the library is
2743 found at build time. To prevent this, use the configure option
2744 `--without-selinux'. See below for SELinux features.
2746 ** Emacs can be compiled with ImageMagick support.
2747 This happens by default if a suitably recent version of the library is
2748 found at build time. To prevent this, use the configure option
2749 `--without-imagemagick'. See below for ImageMagick features.
2750 This feature is not available for the Nextstep or MS ports.
2752 ** Emacs can be compiled with libxml2 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-xml2'. See below for libxml2 features.
2757 ** By default, the installed Info and man pages are compressed.
2758 You can disable this by configuring --without-compress-info.
2760 ** New configure option --with-wide-int.
2761 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2762 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2765 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2766 These provide no new functionality, they just remove the need to edit
2767 lib-src/Makefile by hand in order to use the associated features.
2769 ** New configure option --enable-use-lisp-union-type.
2770 This is only useful for Emacs developers to debug certain types of bugs.
2771 This is not a new feature; only the configure flag is new.
2773 ** The standalone programs digest-doc and sorted-doc are removed.
2774 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2776 ** The standalone program `fakemail' is removed.
2777 If you need it, feedmail.el provides a superset of the functionality.
2780 * Startup Changes in Emacs 24.1
2782 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2783 command line arguments, and the EMACS_UNIBYTE environment variable, no
2784 longer have any effect. (They were declared obsolete in Emacs 23.)
2786 ** New command line option `--no-site-lisp' removes site-lisp directories
2787 from load-path. -Q now implies this. This option does not affect the
2788 EMACSLOADPATH environment variable (and hence has no effect for
2792 * Changes in Emacs 24.1
2796 *** Many packages now use the `completion-at-point' command,
2797 rather than implementing separate completion commands.
2799 *** `completion-at-point' now handles tags and semantic completion.
2801 *** Completion in a non-minibuffer now tries to detect the end of completion
2802 and pops down the *Completions* buffer accordingly.
2804 *** New option `completion-cycle-threshold' allows completion cycling.
2806 *** New option `completion-category-overrides' for overriding the
2807 default completion style in certain circumstances.
2809 *** New completion style `substring'.
2811 *** Completion of buffer names uses `substring' completion by default.
2813 *** The option `widget-complete-field' has been removed.
2817 *** The first time you try sending mail, Emacs asks for a mail method.
2818 This is implemented by a new default for `send-mail-function', which
2819 is `sendmail-query-once'. This offers to use the smtpmail package, or
2820 to use the old defaults relying on external mail facilities
2821 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2822 `mailclient-send-it' on Windows).
2824 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2825 transfers the report to your desktop's preferred mail client, if there
2826 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2829 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2830 and Mail mode changes
2832 ** Emacs server and client changes
2834 *** New option `server-port' specifies the port for TCP Emacs servers.
2836 *** New emacsclient argument -q/--quiet suppresses some status messages.
2838 *** New emacsclient argument --frame-parameters specifies the frame
2839 parameters of any newly-created graphical frame.
2841 *** If emacsclient shuts down due to Emacs signaling an error,
2842 its exit status is 1.
2844 *** New emacsclient argument --parent-id ID.
2845 This opens a client frame in parent X window ID, via XEmbed, similar
2846 to the --parent-id argument to Emacs.
2848 ** Internationalization changes
2850 *** Emacs now supports display and editing of bidirectional text.
2851 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2852 displayed in the correct visual order as expected by users of those
2853 scripts. The display reordering is a "full bidirectionality" class
2854 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2855 with no RTL text should look exactly the same as before.
2857 **** New buffer-local variable `bidi-display-reordering'.
2858 To disable display reordering in a buffer, change this to nil.
2860 **** New buffer-local variable `bidi-paragraph-direction'.
2861 If nil (the default), Emacs determines the base direction of each
2862 paragraph from its text, as specified by the UBA. Setting the value
2863 to `right-to-left' or `left-to-right' forces a base direction on each
2866 Paragraphs with right-to-left base direction are displayed starting at
2867 the right window edge.
2869 *** Enhanced support for characters with no glyphs in available fonts,
2870 or, on text terminals, characters that cannot be encoded by the
2871 terminal coding system. The new option `glyphless-char-display-control'
2872 specifies how to display them: as a hexadecimal code in a box, a thin
2873 1-pixel space, an empty box, etc.
2875 *** New input methods for Farsi and Bulgarian
2876 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2878 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2879 (U+2010 and U+2011).
2881 *** New Hebrew translation of the Emacs Tutorial.
2882 Type `C-u C-h t' to choose it in case your language setup doesn't
2883 automatically select it.
2885 ** An Emacs Lisp package manager is now included.
2886 This is a convenient way to download and install additional packages,
2887 from a package repository at http://elpa.gnu.org.
2889 *** M-x list-packages shows a list of packages, which can be
2890 selected for installation.
2892 *** New command `describe-package', bound to `C-h P'.
2894 *** By default, all installed packages are loaded automatically when
2895 Emacs starts up. To disable this, set `package-enable-at-startup' to
2896 nil. To specify the packages to load, customize `package-load-list'.
2898 ** Custom theme changes
2900 *** New command `M-x customize-themes', which provides a convenient
2901 interface for enabling and disabling Custom themes.
2903 *** New option `custom-theme-load-path' is the load path for themes.
2904 Emacs no longer looks for Custom themes in `load-path'. The default
2905 value of `custom-theme-load-path' says to look for themes in
2906 `custom-theme-directory', followed by a subdirectory of
2907 `data-directory' named "themes/", which contains a small selection of
2908 built-in Custom themes.
2910 *** New option `custom-safe-themes' records known-safe theme files.
2911 If a theme is not in this list, Emacs queries before loading it, and
2912 offers to save the theme to `custom-safe-themes' automatically. By
2913 default, all themes included in Emacs are treated as safe.
2915 ** Improved GTK integration
2917 *** GTK scroll-bars are now placed on the right by default.
2918 The function `set-scroll-bar-mode' can change this.
2920 *** GTK tool bars can have just text, just images or images and text.
2921 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2922 the default is taken from desktop settings.
2924 *** GTK tool bars can be placed on any edge of the frame.
2925 The frame-parameter tool-bar-position controls this. It takes the
2926 values top, left, right or bottom. The Options => Show/Hide menu has
2929 *** The default colors for selected text (the `region' face) are taken
2930 from the GTK theme when Emacs is built with GTK.
2932 *** Emacs uses GTK tooltips by default if built with GTK.
2933 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2935 ** Graphical interface changes
2937 *** On graphical displays, the mode-line no longer ends in dashes.
2938 Also, the first dash (which does not indicate anything) is just
2939 displayed as a space.
2941 *** `menu-bar-select-buffer-function' lets you choose another operation
2942 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2944 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2945 built with Xft. These fonts can be set via X resources, for example:
2946 Emacs.pane.menubar.font: Courier-12
2950 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2951 or if it receives a SIGINT signal in batch mode.
2953 *** `kill-emacs-hook' is now also run in batch mode.
2954 Third-party code which adds to `kill-emacs-hook' should check if they
2955 do the right thing in batch mode.
2957 ** Scrolling changes
2959 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2960 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2961 of buffer at first key-press (instead they move to top/bottom of buffer)
2962 when `scroll-error-top-bottom' is non-nil.
2964 *** New option `scroll-error-top-bottom' (see above).
2966 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2967 scroll a line instead of full screen.
2969 *** New property `scroll-command' should be set on a command's symbol to
2970 define it as a scroll command affected by `scroll-preserve-screen-position'.
2972 *** If you customize `scroll-conservatively' to a value greater than 100,
2973 Emacs will never recenter point in the window when it scrolls due to
2974 cursor motion commands or commands that move point (e.f., `M-g M-g').
2975 Previously, you needed to use `most-positive-fixnum' as the value of
2976 `scroll-conservatively' to achieve the same effect.
2978 *** "Aggressive" scrolling now honors the scroll margins.
2979 If you customize `scroll-up-aggressively' or
2980 `scroll-down-aggressively' and move point off the window, Emacs now
2981 scrolls the window so as to avoid positioning point inside the scroll
2984 ** Basic SELinux support has been added.
2985 This requires Emacs to be linked with libselinux at build time.
2987 *** Emacs preserves the SELinux file context when backing up.
2988 Also, the function `copy-file' has an extra optional argument for
2989 preserving SELinux context, and the return value of `backup-buffer'
2990 now includes the SELinux context.
2992 *** New functions `file-selinux-context' and `set-file-selinux-context'
2993 get and set the SELinux context of a file.
2997 *** `delete-by-moving-to-trash' now only affects commands that specify
2998 trashing. This avoids inadvertently trashing temporary files.
3000 *** Calling `delete-file' or `delete-directory' with a prefix argument
3001 now forces true deletion, regardless of `delete-by-moving-to-trash'.
3003 ** File- and directory-local variable changes
3005 *** You can stop directory local vars from applying to subdirectories.
3006 Add an element (subdirs . nil) to the alist portion of any variables
3007 settings to indicate that the section should not apply to
3010 *** Directory local variables can apply to some file-less buffers.
3011 Affected modes include dired, vc-dir, and log-edit. For example,
3012 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
3013 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
3014 `hack-dir-local-variables-non-file-buffer' to support this.
3016 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
3017 Instead, use "eval: (minor-mode 1)".
3019 *** The variable `inhibit-first-line-modes-regexps' has been renamed
3020 to `inhibit-local-variables-regexps'. As the name suggests, it now
3021 applies to ALL file local variables, not just -*- lines. The
3022 associated `inhibit-first-line-modes-suffixes' has been renamed in the
3027 *** The `quit-window' command now restores the last buffer displayed
3028 in the quitted window.
3030 *** Resizing an Emacs frame now preserves proportional window sizes,
3031 modulo restrictions like window minimum sizes and fixed-size windows.
3033 *** The behavior of `display-buffer' is now customizable in detail.
3035 **** New option `display-buffer-base-action' specifies a list of
3036 user-determined display "actions" (functions and optional arguments
3037 for choosing the displaying window).
3039 This takes precedence over the default display action, which is
3040 specified by `display-buffer-fallback-action'.
3042 **** New option `display-buffer-alist' maps buffer name regexps to
3043 display actions, taking precedence over `display-buffer-base-action'.
3045 *** New option `window-combination-limit'.
3046 The new option `window-combination-limit' allows to return the space
3047 obtained for resizing or creating a window more reliably to the window
3048 from which such space was obtained.
3050 *** New option `window-combination-resize'.
3051 The new option `window-combination-resize' allows to split a window that
3052 otherwise cannot be split because it's too small by stealing space from
3053 other windows in the same combination. Subsequent resizing or deletion
3054 of the window will resize all windows in the same combination as well.
3056 *** New option `frame-auto-hide-function' lets you choose between
3057 iconifying or deleting a frame when burying a buffer in a dedicated
3058 frame, or quitting a window showing a buffer in a frame of its own.
3060 *** New commands `maximize-window' and `minimize-window'.
3061 These maximize and minimize the size of a window within its frame.
3063 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
3064 These functions allow to navigate through the live buffers that have
3065 been shown in a specific window.
3067 ** Minibuffer changes
3069 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
3070 This is handy for minibuffer-only frames, and is also used for the feature
3071 where mouse-1 pops up *Messages*"', which can now easily be changed.
3073 *** Minibuffers set `truncate-lines' to nil.
3074 If you want to change the value to something else, you could use
3075 for example `minibuffer-setup-hook'.
3077 ** `auto-mode-case-fold' is now enabled by default.
3079 ** `backup-by-copying-when-mismatch' now defaults to t.
3081 ** New basic faces `error', `warning', `success'.
3082 These are used to highlight text indicating failure, caution or
3083 successful operation.
3085 ** New option `list-colors-sort' defines the color sort order
3086 for `list-colors-display'.
3088 ** The variable `focus-follows-mouse' now always defaults to nil.
3091 * Editing Changes in Emacs 24.1
3095 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
3096 `isearch-yank-line'.
3098 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
3099 `isearch-yank-kill'.
3101 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
3103 ** New commands `count-words-region' and `count-words'.
3105 *** M-= is bound to `count-words-region', not `count-lines-region'.
3106 The `count-words-region' command, when called interactively, reports
3107 the number of lines, words, and characters in the region. It is a
3108 superset of the old `count-lines-region', which is now an obsolete
3111 ** The command `just-one-space' (M-SPC), if given a negative argument,
3112 also deletes newlines around point.
3116 *** New option `delete-active-region'.
3117 If non-nil, [delete] and DEL delete the region if it is active and no
3118 prefix argument is given. If set to `kill', those commands kill
3121 *** New command `delete-forward-char', bound to [delete].
3122 This is meant for interactive use, and obeys `delete-active-region'.
3123 The command `delete-char' does not obey `delete-active-region'.
3125 *** `delete-backward-char' is now a Lisp function.
3126 Apart from obeying `delete-active-region', its behavior is unchanged.
3127 However, the byte compiler now warns if it is called from Lisp; Lisp
3128 callers should use delete-char with a negative argument instead.
3130 *** The option `mouse-region-delete-keys' has been deleted.
3132 ** Selection changes.
3134 The default handling of clipboard and primary selections has been
3135 changed to conform with modern X applications. In short, most
3136 commands for killing and yanking text now use the clipboard, while
3137 mouse commands use the primary selection.
3139 In the following, we provide a list of these changes, followed by a
3140 list of steps to get the old behavior back if you prefer that.
3142 *** `select-active-regions' now defaults to t.
3143 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
3144 the kill ring. The selected text is put in the primary selection, if
3145 the system possesses a separate primary selection facility (e.g. X).
3147 **** `select-active-regions' also accepts a new value, `only'.
3148 This means to only set the primary selection for temporarily active
3149 regions (usually made by mouse-dragging or shift-selection);
3150 "ordinary" active regions, such as those made with C-SPC followed by
3151 point motion, do not alter the primary selection.
3153 **** `mouse-drag-copy-region' now defaults to nil.
3155 *** mouse-2 is now bound to `mouse-yank-primary'.
3156 This pastes from the primary selection, ignoring the kill-ring.
3157 Previously, mouse-2 was bound to `mouse-yank-at-click'.
3159 *** `x-select-enable-clipboard' now defaults to t on all platforms.
3161 *** `x-select-enable-primary' now defaults to nil.
3162 Thus, commands that kill text or copy it to the kill-ring (such as
3163 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
3165 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
3166 exactly equivalent to M-w, C-w, and C-y respectively.
3168 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
3169 non-nil by default, as Windows does not support the primary selection
3170 between applications.
3172 *** To return to the previous behavior, do the following:
3174 **** Change `select-active-regions' to nil.
3175 **** Change `mouse-drag-copy-region' to t.
3176 **** Change `x-select-enable-primary' to t (on X only).
3177 **** Change `x-select-enable-clipboard' to nil.
3178 **** Bind `mouse-yank-at-click' to mouse-2.
3180 *** Support for X cut buffers has been removed.
3182 *** X clipboard managers are now supported.
3183 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
3185 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
3186 in the current rectangle. With a prefix argument, this prompts for a
3187 number to count from and for a format string.
3189 ** `redisplay-dont-pause' now defaults to t.
3190 This makes Emacs feel more responsive to editing commands that arrive
3191 at high rate, e.g. if you lean on some key, because stopping redisplay
3192 in the middle (when this variable is nil) forces more expensive
3193 updates later on, and Emacs appears to be unable to keep up.
3195 ** The behavior of <TAB> for active regions in Text mode has changed.
3196 In Text and related modes, typing <TAB> (`indent-for-tab-command')
3197 when the region is active causes Emacs to indent all the lines in the
3198 region, aligning them with the line previous to the first line in the
3199 region (or with the left margin if there is no previous line).
3201 ** When `occur' is called with a prefix argument, matching strings are
3202 collected into the `*Occur*' buffer without line numbers. If there
3203 are parenthesized subexpressions in the specified regexp, `occur'
3204 reads replacement text that may contain \\& and \\N whose convention
3205 follows `replace-match'.
3208 * Changes in Specialized Modes and Packages in Emacs 24.1
3210 ** Archive Mode has basic support for browsing and updating 7z archives.
3214 *** BibTeX mode now supports biblatex.
3215 Use the variable `bibtex-dialect' to select different BibTeX dialects.
3216 `bibtex-entry-field-alist' is now an obsolete alias for
3217 `bibtex-BibTeX-entry-alist'.
3219 *** New command `bibtex-search-entries', bound to C-c C-a.
3221 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
3223 *** New variable `bibtex-search-entry-globally'.
3227 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
3229 *** The default browser used by the package is now the "xdg-open" program,
3230 on platforms that support it. This calls your desktop's preferred browser.
3234 *** Support for musical notes.
3236 *** Support for logarithmic units.
3238 *** No longer uses the tex prefix for TeX specific unit names when
3239 using TeX or LaTeX mode.
3241 *** New option to highlight selections using faces.
3243 *** `calc-histogram' has the option of using a vector to determine the bins.
3245 *** New "O" option prefix.
3247 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
3249 ** Calendar, Diary, and Appt
3251 *** Diary entries can contain non-printing "comments".
3252 See the variable `diary-comment-start'.
3254 *** Appointments can specify their individual warning times.
3255 See the variable `appt-warning-time-regexp'.
3257 *** The function specified by `appt-disp-window-function' may be passed
3258 lists of arguments if multiple appointments are due at similar times.
3259 If you are using a custom function for this, you should update it.
3261 *** New function `diary-hebrew-birthday'.
3263 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
3264 may no longer be nil, but must all be strings.
3266 *** The obsolete (since Emacs 22.1) method of enabling the appt
3267 package by adding `appt-make-list' to `diary-hook' has been removed.
3268 Use `appt-activate' instead.
3270 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
3271 appt-issue-message (use the function appt-activate)
3272 appt-visible/appt-msg-window (use the variable appt-display-format)
3274 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
3275 view-diary-entries, list-diary-entries, show-all-diary-entries
3279 *** New feature to "guess" the style in an existing buffer.
3280 The main entry point is M-x c-guess.
3282 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
3284 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
3285 Thus C-M-a will, by default, go to the beginning of the immediate function,
3288 *** "Macros with semicolons" can be registered for correct indentation.
3289 Where such a macro ends a line (no semicolon) the next statement is no longer
3290 parsed as a statement continuation.
3292 ** Comint and modes derived from it use the standard completion code.
3296 *** Compilation mode can be used without Font Lock mode.
3297 `compilation-parse-errors-function' is now obsolete.
3299 *** New variable `compilation-filter-start', which is bound while
3300 `compilation-filter-hook' runs. It records the start position of the
3301 text inserted by `compilation-filter'.
3303 *** `compilation-error-screen-columns' and `compilation-first-column'
3304 are obeyed in the editing buffer. So programming language modes can
3305 set them, whereas previously only the value in the *Compilation*
3310 *** Customize buffers now contain a search field.
3311 The search is performed using `customize-apropos'.
3312 To turn off the search field, set `custom-search-field' to nil.
3314 *** Options in customize group buffers start out hidden if not customized.
3315 Use the arrow to the left of the option name to toggle visibility.
3317 *** custom-buffer-sort-alphabetically now defaults to t.
3319 *** The color widget now has a "Choose" button, which allows you to
3320 choose a color via `list-colors-display'.
3324 *** It is now possible to access buses other than the default system
3327 *** The `dbus-register-method' and `dbus-register-property' functions
3328 optionally do not register names.
3330 *** The new function `dbus-register-service' registers a known service
3331 name on a D-Bus without also registering a property or a method.
3335 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
3336 if called with a prefix argument, read a file name from the minibuffer
3337 instead of using the current buffer.
3339 *** The "dired local variables" feature of Dired-x is obsolete.
3340 The standard directory local variables feature replaces it.
3344 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
3345 controlling attempts to autojoin a channel.
3347 *** New variable `erc-coding-system-precedence': If we use `undecided'
3348 as the server coding system, this variable will then be consulted.
3349 The default is to decode strings that can be decoded as utf-8 as
3350 utf-8, and do the normal `undecided' decoding for the rest.
3354 *** The default value of `eshell-directory-name' has changed
3355 to be an "eshell" directory in `user-emacs-directory'.
3356 The old "~/.eshell/" directory is still used if it exists, though.
3360 *** The M-x gdb command now uses the GDB Machine Interface protocol.
3361 It now supports multithread non-stop debugging and simultaneous
3362 debugging of several threads.
3366 *** RET (`image-toggle-animation') toggles animation, if applicable.
3367 Animation plays once, unless the option `image-animate-loop' is non-nil.
3371 *** New command M-x info-display-manual displays a named Info manual.
3372 If that manual is already visited in some Info buffer, it displays
3373 that buffer. (This is handy if you have many manuals in many *info*
3374 buffers, and don't remember the name of the buffer visiting the manual
3375 you want to consult.) Otherwise, it loads and displays the manual.
3377 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
3378 This is for compatibility with the stand-alone Info reader program,
3379 and also because `Info-edit' is a rarely used command that is disabled
3382 ** Mail mode changes (not Message mode)
3384 *** New command M-x mail-add-attachment for adding MIME attachments
3386 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
3387 (Its name is misleading, since it has nothing to do with MIME
3388 attachments.) The old name is now an obsolete alias to the new name.
3390 ** MH-E has been updated to MH-E version 8.3.1.
3391 See MH-E-NEWS for details.
3393 ** Modula-2 mode provides auto-indentation.
3395 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3397 ** nXML mode no longer binds C-RET to `nxml-complete'.
3398 Completion is now performed via `completion-at-point', bound to C-M-i
3399 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3400 default), this performs tag completion.
3402 ** Org mode has been updated to version 7.8.09.
3403 See ORG-NEWS for details.
3405 ** Prolog mode has been completely revamped, with lots of additional
3406 functionality such as more intelligent indentation, electricity,
3407 support for more variants, including Mercury, and a lot more.
3411 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3412 in the Rmail incoming message.
3414 *** The variable `rmail-message-filter' no longer has any effect.
3415 This change was made in Emacs 23.1 but was not advertised at the time.
3416 Try using `rmail-show-message-hook' instead.
3420 *** M-x shell prompts for the shell path name if the default directory
3421 is a remote file name and neither the environment variable $ESHELL nor
3422 the variable `explicit-shell-file-name' is set.
3424 *** TAB is now bound to the standard `completion-at-point' command,
3425 which now implements the pcomplete rules for shell command completion.
3429 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3430 if the mail server supports them. This uses either built-in GnuTLS
3431 support, or the starttls.el library. Customize `smtpmail-stream-type'
3434 *** The variable `smtpmail-auth-credentials' has been removed.
3435 By default, the information is now stored in the file ~/.authinfo.
3436 This was the default value of smtpmail-auth-credentials. If you had
3437 customized smtpmail-auth-credentials to a list of user names and
3438 passwords, those settings are not used. During your first connection
3439 to the smtp server, Emacs will prompt for the user name and password,
3440 and offer to save them to ~/.authinfo. Or you can manually copy the
3441 credentials to ~/.authinfo. For example, if you had
3443 (setq smtpmail-auth-credentials
3444 '(("mail.example.org" 25 "jim" "s!cret")))
3446 then the equivalent line in ~/.authinfo would be
3448 machine mail.example.org port 25 login jim password s!cret
3450 See the auth-source manual for more information, e.g. on encrypting
3451 the credentials file.
3453 *** The variable `smtpmail-starttls-credentials' has been removed.
3454 If you had that set, you need to put
3456 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3458 in your ~/.authinfo file instead.
3460 *** SMTPmail defaults to using the address in the From: header as the
3461 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3462 to the address you wish to use instead.
3466 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3467 and `sql-oracle-scan-on'.
3469 *** New options controlling prompting for login parameters.
3470 Each supported product has a custom variable `sql-*-login-params',
3471 which is a list of the parameters to be prompted for before a
3472 connection is established.
3474 *** The command `sql-product-interactive' now takes a prefix argument,
3475 which causes it to prompt for an SQL product.
3477 *** Product-specific SQL interactive commands now take prefix arguments.
3478 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3479 given a prefix argument, prompt for a name for the SQL interactive
3480 buffer. This reduces the need for calling `sql-rename-buffer'.
3482 *** SQL interactive modes suppress command continuation prompts, and
3483 replace tabs with spaces. The first change impacts multiple line SQL
3484 statements entered with C-j between each line, statements yanked into
3485 the buffer and statements sent with `sql-send-*' functions. The
3486 second prevents the MySQL and Postgres interpreters from listing
3487 object name completions when sent text via `sql-send-*' functions.
3489 *** New command `sql-connect' starts a predefined SQLi session,
3490 using the login parameters from `sql-connection-alist'.
3492 *** New "Save Connection" menu item in SQLi buffers.
3493 This gathers the login params specified for the SQLi session, if it
3494 was not started by a connection, and saves them as a new connection.
3496 *** New commands for listing database objects and details:
3497 sql-list-all and sql-list-table.
3499 *** An API for manipulating SQL product definitions has been added.
3503 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3507 *** New inline access method "ksu" (kerberized su).
3509 *** The following access methods are discontinued: "ssh1_old",
3510 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3512 *** The user option `remote-file-name-inhibit-cache' controls whether
3513 remote file attributes are cached for better performance.
3515 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3516 default value to "".
3518 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3519 for remote machines which support SELinux.
3521 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3522 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3523 the degree of parallelism.
3525 ** VC and related modes
3527 *** Support for pulling on distributed version control systems.
3528 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3529 supported (currently with Bzr, Git, and Mercurial), to update the
3530 current branch and working tree. A prefix argument means to prompt
3531 the user for specifics, e.g. a pull location.
3533 *** `vc-update' is now an alias for `vc-pull'.
3535 *** Support for merging on distributed version control systems.
3536 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3537 is supported (currently with Bzr, Git, and Mercurial), to merge
3538 changes from another branch into the current one. It prompts for
3539 specifics, e.g. a merge source.
3541 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3542 shows a diff while querying the user. It defaults to t.
3544 *** Log entries in some Log View buffers can be toggled to display a
3545 longer description by typing RET (log-view-toggle-entry-display).
3546 This is currently supported for Bzr, Git, and Mercurial (to support
3547 another backend, define a `log-view-expanded-log-entry-function').
3548 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3549 use this to display the full log entry for the revision at point.
3551 *** New command `vc-ediff' allows visual comparison of two revisions
3552 of a file similar to `vc-diff', but using ediff backend.
3554 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3555 this was not advertised at the time.
3557 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3558 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3559 this was not advertised at the time.
3565 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3567 *** partial-completion-mode (complete.el) is obsolete.
3568 You can get a comparable behavior with:
3569 (setq completion-styles '(partial-completion initials))
3570 (setq completion-pcm-complete-word-inserts-delimiters t)
3572 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3574 *** pgg is obsolete (use EasyPG instead).
3576 *** sregex.el is obsolete, since rx.el is a strict superset.
3578 *** s-region.el and pc-select.el are obsolete.
3579 They are superseded by shift-select-mode, enabled by default since 23.1.
3581 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3585 *** The Landmark game is now invoked with `landmark', not `lm'.
3586 Its functions and variables have been similarly renamed.
3588 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3589 (This interfered with cua-mode.)
3591 *** f90.el has some support for Fortran 2008 syntax.
3593 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3595 *** New command `nato-region' converts text to NATO phonetic alphabet.
3598 * New Modes and Packages in Emacs 24.1
3600 ** Occur Edit mode applies edits made in *Occur* buffers to the
3601 original buffers. It is bound to "e" in Occur mode.
3603 ** New global minor mode electric-pair-mode.
3604 When enabled, typing an open parenthesis automatically inserts the
3605 matching closing one.
3607 ** New global minor mode electric-indent-mode.
3608 When enabled, typing certain characters triggers reindentation.
3609 Major modes wishing to use this can set electric-indent-chars or
3610 electric-indent-functions.
3612 ** New global minor mode electric-layout-mode.
3613 When enabled, typing certain characters automatically inserts newlines.
3614 Major modes wishing to use this can set electric-layout-rules.
3616 ** tabulated-list.el provides a generic major mode for tabulated data,
3617 from which other modes can be derived.
3619 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3621 ** secrets.el is an implementation of the Secret Service API, an
3622 interface to password managers like GNOME Keyring or KDE Wallet. The
3623 Secret Service API requires D-Bus for communication. The command
3624 `secrets-show-secrets' offers a buffer with a visualization of the
3627 ** notifications.el provides an implementation of the Desktop
3628 Notifications API. It requires D-Bus for communication.
3630 ** soap-client.el supports access to SOAP web services from Emacs.
3631 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3633 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3635 ** New emacs-lock.el package.
3636 The previous version has been moved to obsolete/old-emacs-lock.el.
3637 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3638 against exiting Emacs and killing the buffer can be set separately.
3639 The mechanism for automatically turning off protection for buffers
3640 with dead inferior processes has been generalized.
3643 * Incompatible Lisp Changes in Emacs 24.1
3645 ** Passing a nil argument to a minor mode function call now ENABLES
3646 the minor mode unconditionally. This is so that you can write e.g.
3648 (add-hook 'text-mode-hook 'foo-mode)
3650 to enable foo-mode in Text mode buffers, removing the need for
3651 `turn-on-foo-mode' style functions. This affects all mode commands
3652 defined by `define-minor-mode'. If called interactively, the mode
3653 command still toggles the minor mode.
3655 ** The return value of `backup-buffer' has changed.
3656 It is now a list of three elements, where the second element is a list
3657 describing the original file's SELinux context. If Emacs or the
3658 system lacks SELinux support, the context list is (nil nil nil nil).
3659 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3661 ** `char-direction-table' and the `char-direction' function were deleted.
3662 They were buggy and inferior to the new support of bidirectional
3663 editing introduced in Emacs 24. If you need the bidirectional
3664 properties of a character, use `get-char-code-property' with the last
3665 argument `bidi-class'.
3667 ** `copy-directory' now copies the source directory as a subdirectory
3668 of the target directory, if the latter is an existing directory. The
3669 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3670 the contents directly into a pre-existing target directory.
3672 ** For mouse click input events in the text area, the Y pixel
3673 coordinate in the POSITION list now counts from the top of the text
3674 area, excluding any header line. Previously, it counted from the top
3677 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3678 been further reduced. Now a backquote not followed by a space is
3679 always treated as a "new-style" backquote. Please remove all
3680 "old-style" backquotes from your code. If your code uses backquotes
3681 as documented in the Elisp manual, and compiles without warning, then
3682 you have nothing to do in this regard. Code not following the
3683 appropriate conventions may fail to compile.
3685 The most common cause of trouble seems to be an old-style backquote
3686 followed by a newline. Another cause of trouble is vector notation
3687 for key sequence notation: instead of [(control ,)] and [(control ')],
3688 you should write [(control ?,)] and [(control ?')], which will work in
3691 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3692 was not advertised at the time. The function `custom-initialize-delay'
3693 replaced all known uses.
3695 ** `view-buffer' now treats special mode-class in the same way that
3696 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3697 major mode is special).
3699 ** Menu and tool bar changes
3701 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3702 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3703 With these alist entries omitted, `make-frame' checks the value of the
3704 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3705 a menu-bar or tool-bar, respectively. If the alist entries are added,
3706 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3708 *** The menu bar bindings's caches are not used any more.
3709 Use (where-is-internal <def> nil t) instead.
3711 ** Regions created by mouse dragging are now normal active regions,
3712 similar to those created by shift-selection (see Selection changes
3713 above). In previous Emacs versions, these regions were delineated by
3714 `mouse-drag-overlay'; that variable has been removed.
3716 ** The fourth argument of `filter-buffer-substring' has been removed.
3717 If you want to remove text properties from the final result, simply
3718 pass the result through substring-no-properties.
3720 ** cl.el no longer provides `cl-19'.
3722 ** The following obsolete functions and aliases have been removed
3723 (the appropriate new function is given in parentheses; "not needed"
3724 means you can just remove all calls to the function in question):
3726 *** `comint-kill-output' (`comint-delete-output')
3727 *** `decompose-composite-char' (`char-to-string')
3728 *** `outline-visible' (`outline-invisible-p')
3729 *** `internal-find-face' (`facep')
3730 *** `internal-get-face' (`facep and check-face')
3731 *** `frame-update-faces' (not needed)
3732 *** `frame-update-face-colors' (`frame-set-background-mode')
3733 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3734 *** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
3735 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3736 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3737 *** `x-make-font-unbold' (`make-face-unbold')
3738 *** `x-make-font-unitalic' (`make-face-unitalic')
3739 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3740 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3741 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3742 *** `char-bytes' (== 1)
3743 *** `isearch-return-char' (`isearch-printing-char')
3744 *** `make-local-hook' (not needed)
3745 *** `set-screen-height' (`set-frame-height')
3746 *** `set-screen-width' (`set-frame-width')
3748 ** The following obsolete variables and varaliases have been removed
3749 (the appropriate new variable is given in parentheses):
3751 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3752 *** `vc-header-alist' (`vc-BACKEND-header')
3753 *** `directory-sep-char' (== ?/)
3754 *** `font-lock-defaults-alist' (`font-lock-defaults')
3755 *** `e' (`float-e').
3757 ** The following obsolete files were removed:
3758 sc.el, x-menu.el, rnews.el, rnewspost.el
3760 ** The format of the finder-inf.el file has changed, since the Finder
3761 mechanism is now based on the package system. The variable
3762 `finder-package-info' is replaced by `package--builtins' and
3763 `finder-keywords-hash'.
3765 ** When generating autoloads, `update-directory-autoloads' no longer
3766 assumes every inspected file is in your `load-path'. It instead
3767 generates relative names according to the current `load-path'.
3770 * Lisp Changes in Emacs 24.1
3772 ** Code can now use lexical scoping by default instead of dynamic scoping.
3773 The `lexical-binding' variable enables lexical scoping for local
3774 variables. It is typically set via a file-local variable in the first
3775 line of the file, in which case it applies to all the code in that
3778 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3779 binding instead of the old dynamic binding mode.
3781 *** Lexically scoped interpreted functions are represented with a new form
3782 of function value which looks like (closure ENV ARGS &rest BODY).
3784 *** New macro `letrec' to define recursive local functions.
3786 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3787 So do `defcustom' and other forms that call `defvar' as a subroutine.
3789 *** New function `special-variable-p' to check whether a variable is
3790 declared as dynamically bound.
3792 *** The form ((lambda ...) ...) is deprecated.
3794 ** An Emacs Lisp testing tool is now included.
3795 Emacs Lisp developers can use this tool to write automated tests for
3796 their code. See the ERT info manual for details.
3798 ** Changes for bidirectional display and editing
3800 *** New function `current-bidi-paragraph-direction'.
3801 This returns the base direction of the paragraph at point.
3803 *** New function `bidi-string-mark-left-to-right'.
3804 Given a string containing characters from right-to-left scripts, this
3805 function returns another string which can be safely inserted into a
3806 buffer, such that any following text will be always displayed to the
3807 right of that string. (This works by appending an invisible Unicode
3808 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3810 This is useful when the buffer has overall left-to-right paragraph
3811 direction and you need to insert a string whose contents are not known
3812 in advance, without disrupting the layout of the line.
3816 *** Window tree functions are accessible in Elisp.
3817 Functions are provided to return the parent, siblings or child windows
3818 of any window including internal windows (windows not associated with a
3819 buffer) in the window tree.
3821 **** New function `window-valid-p' gives non-nil for live and internal
3824 **** Window manipulation can deal with internal windows.
3825 Many window handling functions like `split-window', `delete-window', or
3826 `delete-other-windows' as well as the window resizing functions can now
3827 act on any window including internal ones.
3829 *** window-total-height/-width vs window-body-height/-width.
3830 The function `window-height' has been renamed to `window-total-height'
3831 and `window-width' has been renamed to `window-body-width'. The old
3832 names are provided as aliases. Two new functions `window-total-width'
3833 and `window-body-height' are provided.
3835 *** Window parameters specific to window handling functions.
3836 For each window you can specify a parameter to override the default
3837 behavior of a number of functions like `split-window', `delete-window'
3838 and `delete-other-windows'. The variable `ignore-window-parameters'
3839 allows to ignore processing such parameters.
3841 *** New semantics of third argument of `split-window'.
3842 The third argument of `split-window' has been renamed to SIDE and can be
3843 set to any of the values 'below, 'right, 'above, or 'left to make the
3844 new window appear on the corresponding side of the window that shall be
3845 split. Any other value of SIDE will cause `split-window' to split the
3846 window into two side-by-side windows as before.
3848 *** Window resizing functions.
3849 A new standard function for resizing windows called `window-resize' has
3850 been introduced. This and all other functions for resizing windows no
3851 longer delete any windows when they become too small.
3853 *** Deleting the selected window now selects the most recently selected
3854 live window on that frame instead.
3856 *** `adjust-window-trailing-edge' adjustments.
3857 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3858 is able to resize other windows if a window adjacent to the trailing
3859 edge cannot be shrunk any more. This makes its behavior more similar to
3860 that of Emacs 21 without compromising, however, its inability to delete
3861 windows which was introduced in Emacs 22.
3863 *** Window-local buffer lists.
3864 Windows now have local buffer lists. This means that removing a buffer
3865 from display in a window will preferably show the buffer previously
3866 shown in that window with its previous window-start and window-point
3867 positions. This also means that the same buffer may be automatically
3868 shown twice even if it already appears in another window.
3870 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3871 which if non-nil requires the buffer to be displayed in the currently
3872 selected window, signaling an error otherwise. If nil, another window
3873 can be used, e.g. if the selected one is strongly dedicated.
3875 *** `split-window-vertically' and `split-window-horizontally' renamed
3876 to `split-window-below' and `split-window-right' respectively.
3877 The old names are kept as aliases.
3881 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3882 named ACTION, and takes a display action of the same form as
3883 `display-buffer-base-action' (see Changes, above). A non-nil,
3884 non-list value is treated specially, as the old meaning.
3886 **** New variable `display-buffer-overriding-action'.
3888 **** The procedure of `display-buffer' etc. to choose a window is
3889 determined by combining `display-buffer-overriding-action',
3890 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3891 and `display-buffer-fallback-action'. The second and fourth of these
3892 are user-customizable variables.
3894 See the docstring of `display-buffer' for details.
3896 *** New functions `window-state-get' and `window-state-put'.
3897 These functions allow to save and restore the state of an arbitrary
3898 frame or window as an Elisp object.
3902 *** New variable `completion-extra-properties' used to specify extra
3903 properties of the current completion:
3904 - :annotate-function, same as the old completion-annotate-function.
3905 - :exit-function, function to call after completion took place.
3907 *** Functions on `completion-at-point-functions' can return any of the
3908 properties valid for `completion-extra-properties'.
3910 *** `completion-annotate-function' is obsolete.
3912 *** New `metadata' method for completion tables. The metadata thus returned
3913 can specify various details of the data returned by `all-completions':
3914 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3915 used to select a style in completion-category-overrides.
3916 - `annotation-function' to add annotations in *Completions*.
3917 - `display-sort-function' to specify how to sort entries in *Completions*.
3918 - `cycle-sort-function' to specify how to sort entries when cycling.
3920 *** `minibuffer-local-filename-must-match-map' is not used any more.
3921 Instead, the bindings in `minibuffer-local-filename-completion-map'
3922 are combined with `minibuffer-local-must-match-map'.
3924 *** New variable `completing-read-function' allows overriding the
3925 behavior of `completing-read'.
3927 ** `glyphless-char-display' can now distinguish between graphical and
3928 text terminal display, via a char-table entry that is a cons cell.
3930 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3931 Instead, the offending function is removed.
3935 *** New function `run-hook-wrapped' for running an abnormal hook by
3936 passing the hook functions as arguments to a "wrapping" function.
3937 Like `run-hook-with-args-until-success', it stops at the first
3938 non-nil return value.
3940 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3941 set of "wrapping" filters, similar to around advice.
3942 (A version of this macro was actually added in Emacs 23.2 but was not
3943 advertised at the time.)
3947 *** New macro `condition-case-unless-debug' (this was actually added in
3948 Emacs 23.1 as condition-case-no-debug, but not advertised)
3950 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3952 *** Variable `stack-trace-on-error' removed.
3954 *** The debugger can now "continue" from an error, which means it will
3955 jump to the error handler as if the debugger had not been invoked
3956 instead of jumping all the way to the top-level.
3958 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3959 This can be useful when `inhibit-quit' is set.
3961 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3962 named Emacs server instances.
3964 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3965 to redirect STDOUT to a file.
3967 ** The function `format-time-string' now supports the %N directive,
3968 for higher-resolution time stamps.
3970 ** New input reading functions
3972 *** New function `read-char-choice' reads a restricted set of
3973 characters, discarding any inputs not inside the set.
3975 *** The command `read-color' now requires a match for a color name
3976 or RGB triplet, instead of signaling an error if the user provides
3979 **** `facemenu-read-color' is now an alias for `read-color'.
3981 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3982 The variable is now used to load all kind of supported dynamic libraries,
3983 not just image libraries. The previous name is still available as an
3986 ** Syntax parsing changes
3988 *** New variable `syntax-propertize-function'.
3989 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3990 This allows syntax-table properties to be set independently from font-lock:
3991 just call syntax-propertize to make sure the text is propertized.
3992 Together with this new variable come a new hook
3993 syntax-propertize-extend-region-functions, as well as two helper functions:
3994 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3995 as-is; and syntax-propertize-rules which provides a new way to specify
3998 *** Syntax tables support a new "comment style c" additionally to style b.
4000 ** New hook `post-self-insert-hook', run after `self-insert-command'.
4002 ** frame-local variables cannot be let-bound any more.
4004 ** Major and minor mode changes
4006 *** `set-auto-mode' now respects mode: local variables at the end of files,
4007 as well as those in the -*- line.
4009 *** `prog-mode' is a new major mode from which programming modes
4012 **** `prog-mode-hook' can be used to enable features for programming
4013 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
4014 on-the-fly spell checking for comments and strings.
4016 *** New hook `change-major-mode-after-body-hook', run by
4017 `run-mode-hooks' just before any other mode hooks.
4019 *** Enabled globalized minor modes can be disabled in specific major modes.
4020 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
4021 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
4023 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
4025 ** File-handling changes
4027 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
4028 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
4029 both non-nil. Interactively, TRASH defaults to t, unless a prefix
4030 argument is supplied (see Trash changes, above).
4032 *** New file predicates: `file-equal-p', `file-in-directory-p'.
4034 ** Tool-bars can display separators.
4035 Tool-bar separators are handled like menu separators in menu-bar maps,
4036 i.e. via menu entries of the form `(menu-item "--")'.
4040 *** Animated images support (currently animated gifs only).
4042 **** `image-animated-p' returns non-nil if an image can be animated.
4044 **** `image-animate' animates a supplied image spec.
4046 **** `image-animate-timer' returns the timer object for an image that
4049 *** `image-extension-data' has been renamed to `image-metadata'.
4050 The old name is an obsolete alias to the new one.
4052 *** Image mode can view any image type that ImageMagick supports.
4053 This requires Emacs to be built with ImageMagick support.
4055 **** New function `imagemagick-types', defined if ImageMagick support
4056 is enabled, returns a list of image file extensions that your
4057 ImageMagick installation supports.
4059 **** New function `imagemagick-register-types' enables ImageMagick
4060 image types in Image mode and in `create-image' and other helper
4063 **** New option `imagemagick-types-inhibit' excludes certain
4064 ImageMagick image types from `imagemagick-register-types'.
4066 **** With ImageMagick support, there are extra Image mode commands to
4067 resize and rotate images: `image-transform-fit-to-height',
4068 `image-transform-fit-to-width', `image-transform-set-rotation', and
4069 `image-transform-set-scale'.
4071 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
4072 passes it to the mail user agent function. This argument specifies an
4073 action for returning to the caller after finishing with the mail. For
4074 example, this is used by Rmail to optionally delete a mail window.
4076 ** XML and HTML parsing
4077 If Emacs is compiled with libxml2 support, there are two new
4078 functions: `libxml-parse-html-region' (which parses "real world" HTML)
4079 and `libxml-parse-xml-region' (which parses XML). Both return an
4080 Emacs Lisp parse tree.
4082 ** Networking and encryption changes
4084 *** `open-network-stream' can now be used to open an encrypted stream.
4085 It now accepts an optional `:type' parameter for initiating a TLS
4086 connection, directly or via STARTTLS. To do STARTTLS, additional
4087 parameters (`:end-of-command', `:success', `:capabilities-command')
4088 must also be supplied.
4090 *** New library gnutls.el.
4091 The new function `gnutls-available-p' returns non-nil if Emacs is
4092 built with GnuTLS support. The main entry points are
4093 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
4094 these functions through `open-network-stream', because that can
4095 upgrade connections through STARTTLS opportunistically or use plain
4096 SSL, depending on your needs. For debugging, set `gnutls-log-level'
4099 *** New primitive `secure-hash' that supports many secure hash algorithms:
4100 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
4101 sha1.el has been removed. The `sha1' feature is provided by default.
4105 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
4107 ** Progress reporters can now "spin".
4108 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
4109 now be nil, or omitted. This makes a "non-numeric" reporter. Each
4110 time you call `progress-reporter-update' on that progress reporter,
4111 with a nil or omitted VALUE argument, the reporter message is
4112 displayed with a "spinning bar".
4114 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
4115 being reverted, even if the buffer has a local `revert-buffer-function'.
4117 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
4118 If delayed-warnings-list is non-nil, the command loop calls
4119 `delayed-warnings-hook' after `post-command-hook'. At present, this
4120 is only used by Emacs on some platforms to display warnings during
4121 startup, which might otherwise not be noticed. This uses the
4122 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
4124 ** rx.el has a new `group-n' construct for explicitly numbered groups.
4126 ** New function `make-composed-keymap' that constructs a new keymap
4127 from multiple input maps. You can use this to make a keymap that
4128 inherits from multiple maps, eg:
4129 (set-keymap-parent newmap (make-composed-keymap othermap parent))
4131 ** New function `string-prefix-p'.
4132 (This was actually added in Emacs 23.2 but was not advertised at the time.)
4134 ** New reader macro ## that stands for the empty symbol.
4135 This means that the empty symbol can now be read back. Also, #: by itself
4136 (when not immediately followed by a possible symbol character) stands for
4137 an empty uninterned symbol.
4139 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
4141 ** The following functions and variables are obsolete:
4143 *** `tooltip-use-echo-area' is obsolete.
4144 Rather than setting this to t, disable Tooltip mode instead.
4146 *** buffer-substring-filters is obsolete.
4147 Use `filter-buffer-substring-functions' instead.
4149 *** `byte-compile-disable-print-circle' is obsolete.
4151 *** `deferred-action-list' and `deferred-action-function' are obsolete.
4152 Use `post-command-hook' instead.
4154 *** `font-lock-maximum-size' is obsolete.
4157 * Changes in Emacs 24.1 on Non-Free Operating Systems
4159 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
4160 and also when HOME is set to C:\ by default.
4162 ** New configure.bat options
4164 *** --enable-checking builds Emacs with extra runtime checks.
4166 *** --distfiles specifies files to be included in binary distribution.
4168 *** --without-gnutls disables automatic GnuTLS detection.
4170 *** --lib for general library linkage, works with the USER_LIBS build variable.
4172 ** New make target `dist' to create binary distribution for MS Windows.
4174 ** The Lisp function `w32-default-color-map' is now obsolete.
4175 (It is only used internally in the Emacs C code.)
4177 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
4178 reappear on mouse-over. (Requires OS X 10.6 or later.)
4180 ** On Mac OS X, dragging a file into Emacs visits the file, like on
4181 other platforms, rather than inserting its contents into the buffer.
4184 ----------------------------------------------------------------------
4185 This file is part of GNU Emacs.
4187 GNU Emacs is free software: you can redistribute it and/or modify
4188 it under the terms of the GNU General Public License as published by
4189 the Free Software Foundation, either version 3 of the License, or
4190 (at your option) any later version.
4192 GNU Emacs is distributed in the hope that it will be useful,
4193 but WITHOUT ANY WARRANTY; without even the implied warranty of
4194 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4195 GNU General Public License for more details.
4197 You should have received a copy of the GNU General Public License
4198 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
4204 paragraph-separate: "[
\f]*$"