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 GNU make.
30 ** By default, Emacs no longer works on IRIX. We expect that Emacs
31 users are not affected by this, as SGI stopped supporting IRIX in
32 December 2013. If you are affected, please send a bug report. You
33 should be able to work around the problem either by porting the Emacs
34 undumping code to GCC under IRIX, or by configuring --with-wide-int,
35 or by sticking with Emacs 24.4.
38 * Startup Changes in Emacs 24.5
41 * Changes in Emacs 24.5
44 ** The default value of `history-length' has increased to 100.
47 ** The new variable `term-file-aliases' replaces some files from lisp/term.
48 The function `tty-run-terminal-initialization' consults this variable
49 when deciding what terminal-specific initialization code to run.
52 ** New variable `system-configuration-features', listing some of the
53 main features that Emacs was compiled with. This is mainly intended
54 for use in Emacs bug reports.
57 * Editing Changes in Emacs 24.5
60 * Changes in Specialized Modes and Packages in Emacs 24.5
63 ** The Rmail commands d, C-d and u now handle repeat counts
64 to delete or undelete multiple messages.
66 ** The URL package accepts now the protocols "ssh", "scp" and "rsync".
67 When `url-handler-mode' is enabled, file operations for these
68 protocols as well as for "telnet" and "ftp" are passed to Tramp.
76 * New Modes and Packages in Emacs 24.5
79 * Incompatible Lisp Changes in Emacs 24.5
81 ** inhibit-modification-hooks now also inhibits lock-file checks as well as
82 active region handling.
84 ** deactivate-mark is now buffer-local.
87 * Lisp Changes in Emacs 24.5
90 ** You can specify a function's interactive-only property via `declare'.
91 However you specify it, the property affects `describe-function' output.
94 * Changes in Emacs 24.5 on Non-Free Operating Systems
97 * Installation Changes in Emacs 24.4
100 ** Emacs can now be compiled with ACL support.
101 This happens by default if a suitable support library is found at
102 build time, like libacl on GNU/Linux. To prevent this, use the
103 configure option `--disable-acl'. See below for related features.
106 ** Emacs can now be compiled with file notification support.
107 This happens by default if a suitable system library is found at
108 build time. To prevent this, use the configure option
109 `--without-file-notification'. See below for file-notify features.
110 This feature is not available for the Nextstep port.
113 ** Emacs can now be compiled with zlib support.
114 This happens by default if zlib is present, which it normally is.
115 To prevent this, use the configure option `--without-zlib'.
116 This provides the function `zlib-decompress-region'; see below for details.
119 ** The configure option `--without-compress-info' has been generalized,
120 and renamed to `--without-compress-install'. It now prevents compression
121 of _any_ files during installation.
124 ** The configure option `--with-crt-dir' has been removed.
125 It is no longer needed, as the crt*.o files are no longer linked specially.
128 ** Directories passed to configure option `--enable-locallisppath' are
129 no longer created during installation.
132 ** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
133 This requires pkg-config to be available at build time.
136 * Startup Changes in Emacs 24.4
139 ** When initializing `load-path', an empty element in the EMACSLOADPATH
140 environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
141 "/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
142 load-path (the one that would have been used if EMACSLOADPATH was unset).
143 This makes it easier to _extend_ the load-path via EMACSLOADPATH
144 (previously, EMACSLOADPATH had to specify the complete load-path,
145 including the defaults). (In older versions of Emacs, an empty element
146 was replaced by ".", so use an explicit "." now if that is what you want.)
149 ** The -L option, which normally prepends its argument to load-path,
150 will instead append, if the argument begins with `:' (or `;' on MS Windows;
151 i.e., `path-separator').
154 ** If you use either site-load.el or site-init.el to customize the dumped
155 Emacs executable, any changes to `load-path' that these files make
156 will no longer be present after dumping. To affect a permanent change
157 to `load-path', use the `--enable-locallisppath' option of `configure'.
160 ** The user option `initial-buffer-choice' can now specify a function
161 to set up the initial buffer.
164 * Changes in Emacs 24.4
167 ** New function `zlib-decompress-region', which decompresses gzip- and
168 zlib-format compressed data using built-in zlib support, if available.
171 ** New option `gnutls-verify-error', if non-nil, means that Emacs
172 should reject SSL/TLS certificates that GnuTLS determines as invalid.
173 (This option defaults to nil at present, but this is expected to change
174 in a future release.)
177 ** Emacs now supports menus on text-mode terminals.
178 If the terminal supports a mouse, clicking on the menu bar, or on
179 sensitive portions of the mode line or header line, will drop down the
180 menu defined at that position. Likewise, clicking C-mouse-2 or
181 C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
184 If the text terminal does not support a mouse, you can activate the
185 first menu-bar menu by typing F10, which invokes `menu-bar-open'.
187 If you want the previous behavior, whereby F10 invoked `tmm-menubar',
188 customize the option `tty-menu-open-use-tmm' to a non-nil value.
189 (Typing M-` always invokes `tmm-menubar', even if `tty-menu-open-use-tmm'
193 ** The *Messages* buffer is created in `messages-buffer-mode',
194 a new major mode, with read-only status. Any code that might create
195 the *Messages* buffer should call the function `messages-buffer' to do
196 so and set up the mode.
199 ** Emacs can now support ACLs (access control lists).
200 This requires a suitable support library to be found at build time.
201 On GNU/Linux, the POSIX ACL interface is used via libacl.
202 On MS-Windows, the NT Security APIs are used to emulate the POSIX interface.
205 *** Emacs preserves the ACL entries of files when backing up.
207 *** New functions `file-acl' and `set-file-acl' get and set the ACL
210 ** Multi-monitor support has been added.
213 *** New functions `display-monitor-attributes-list' and
214 `frame-monitor-attributes' can be used to obtain information about
215 each physical monitor on multi-monitor setups.
218 *** The functions `display-pixel-width' and `display-pixel-height' now
219 behave consistently among the platforms: they return the pixel width
220 or height for all physical monitors associated with the given display
221 as if they were on X. To get information for each physical
222 monitor, use the new functions above. Similar notes also apply to
223 `x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
224 `display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
227 ** The cursor stops blinking after 10 blinks (by default) on X and NS.
228 You can change the default by customizing `blink-cursor-blinks'.
231 ** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
232 This affects View mode, etc.
235 ** The default value of `make-backup-file-name-function' is no longer nil.
236 Instead it defaults to a function that does what the nil value used to.
241 *** The command `apropos-variable' is renamed to `apropos-user-option'.
242 `apropos-user-option' shows all user options while `apropos-variable'
243 shows all variables. When called with a universal prefix argument,
244 the two commands swap their behaviors. When `apropos-do-all' is
245 non-nil, they output the same results.
248 *** The key `?' now describes prefix bindings, like `C-h'.
251 *** The command `describe-function' has been extended for EIEIO.
252 Running it on constructors will show a full description of the
253 generated class. For generic functions, it will show all
254 implementations together with links to the source. The old commands
255 `describe-class', `describe-constructor' and `describe-generic' were
259 *** The function `quail-help' is no longer an interactive command.
260 Use `C-h C-\' (`describe-input-method') instead.
265 *** ImageMagick images now support the :max-width and :max-height keywords.
268 *** When using `create-image' with image data, you can pass a :format
269 attribute (via the property-list argument) in order to help
270 ImageMagick detect the image type. The value should be a MIME
271 content-type that is found in the new variable `image-format-suffixes'.
273 ** Frame and window changes
276 *** The function `window-in-direction' introduced in Emacs 24.1 now
277 takes additional arguments for specifying a reference point, wrapping
278 selection around frame borders, and specifying ways to select the
282 *** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
283 bound to <f11> and M-<f10>, respectively.
286 *** New hooks `focus-in-hook', `focus-out-hook'.
287 These are normal hooks run when an Emacs frame gains or loses input focus.
290 *** Emacs can now change frame sizes in units of pixels, rather than
291 text rows or columns. When maximizing a frame or making it fullscreen,
292 remaining extra pixels are no longer given to the minibuffer, the rightmost
293 fringe, or other unusable space, but are distributed among the text
294 areas of the frame's windows. If the new option `frame-resize-pixelwise'
295 is non-nil, all frame size changes happen pixelwise and set the
296 corresponding size hints for the window manager.
299 *** Emacs can now change window sizes in units of pixels.
300 Mouse-dragging a mode line or window divider now changes the size of
301 adjacent windows pixelwise. If the new option `window-resize-pixelwise'
302 is non-nil, functions like `balance-windows-area' and `fit-window-to-buffer'
303 resize windows pixelwise. Most functions for changing or accessing
304 window sizes now have an additional argument that allows changes to apply,
305 or values to be returned, in pixels instead of lines/columns.
308 *** The functions `window-body-height' and `window-body-width' now never
309 count partially visible lines or columns if called with a nil PIXELWISE
313 *** Emacs can now draw dividers between adjacent windows. To put
314 dividers between side-by-side/vertically stacked windows customize the
315 frame parameters `right-divider-width' and `bottom-divider-width' to
316 some positive integer. You can drag dividers with the mouse (they show
317 a corresponding cursor when the mouse hovers over them). You can change
318 the appearance of dividers by customizing the faces `window-divider',
319 `window-divider-first-pixel', and `window-divider-last-pixel'. The last
320 two are useful to provide a 3D effect, or to better distinguish dividers
321 from surrounding display objects.
324 *** New functions are provided to return the pixel sizes of window
325 components, namely `window-scroll-bar-width', `window-mode-line-height'
326 `window-header-line-height', `window-right-divider-width' and
327 `window-bottom-divider-width'.
330 *** The new function `window-text-pixel-size' returns the size of the
331 text of a window's buffer in pixels. This allows functions like
332 `fit-frame-to-buffer' and `fit-window-to-buffer' to accurately fit a
333 window to its buffer as it will be displayed.
336 *** `fit-window-to-buffer' can now resize windows in both dimensions.
337 This behavior is controlled by the new option
338 `fit-window-to-buffer-horizontally'. The new option
339 `fit-frame-to-buffer' allows to fit the window's frame to its buffer.
342 *** `fit-frame-to-buffer' now fits frames in both dimensions. The new
343 options `fit-frame-to-buffer-margins' and `fit-frame-to-buffer-sizes'
344 control the size of the frame and its position on screen.
347 *** Temp Buffer Resize Mode can now adjust height and width of windows
348 and frames. `temp-buffer-resize-mode' is now able to adjust the height
349 and the width of a window displaying a temporary buffer. The new option
350 `temp-buffer-max-width' allows to control the width of temporary buffer
351 windows. Moreover, if the new option `fit-frame-to-buffer' is non-nil
352 and the buffer appears in the root window of a frame, Temp Buffer Resize
353 Mode will try to adjust width and/or height of the frame.
356 *** `split-window' is now a non-interactive function, not a command.
357 As a command, it was a special case of `C-x 2' (`split-window-below'),
358 and as such superfluous. After being reimplemented in Lisp, its
359 interactive form was mistakenly retained.
362 *** The functions `window-size' and `window-total-size' now have an
363 optional argument to return a rounded size value.
366 *** `window-state-put' now allows to put a window state into internal
370 *** New option `scroll-bar-adjust-thumb-portion'.
371 Available only on X, this option allows to control over-scrolling
372 using the scroll bar (i.e. dragging the thumb down even when the end
373 of the buffer is visible).
376 *** New basic action function `display-buffer-in-previous-window' has
377 `display-buffer' display a buffer in a window previously showing that
381 *** New basic action function `display-buffer-at-bottom' has
382 `display-buffer' choose or make a window at the bottom of the selected
386 *** New display action function `display-buffer-no-window' to not
387 display the buffer in a window.
390 *** New display action alist entry `allow-no-window' to indicate the
391 caller of `display-buffer' is ready to handle the case of not
392 displaying the buffer in a window.
394 ** Lisp evaluation changes
396 *** `eval-defun' on an already defined defcustom calls the :set function,
400 *** The commands `eval-expression' (`M-:'), `eval-last-sexp' (`C-x C-e'),
401 and `eval-print-last-sexp' (`C-j' in Lisp Interaction mode) can take a
402 zero prefix argument. This disables truncation of lists in the output,
403 equivalent to setting `(eval-expression-)print-length' and
404 `(eval-expression-)print-level' to nil. Additionally, it causes integers
405 to be printed in other formats (octal, hexadecimal, and character).
408 *** New hook `eval-expression-minibuffer-setup-hook' run by
409 `eval-expression' on entering the minibuffer.
412 ** `write-region-inhibit-fsync' now defaults to t in batch mode.
415 ** `cache-long-line-scans' is now non-nil, and renamed to `cache-long-scans',
416 because it affects caching of paragraph scanning results as well.
417 There is no reason to set this to nil except for debugging purposes.
420 ** The option `set-mark-default-inactive' has been deleted.
421 This unfinished feature was introduced by accident in Emacs 23.1;
422 simply disabling Transient Mark mode does the same thing.
425 ** The default value of `comment-use-global-state' is now t,
426 and this variable has been marked obsolete.
429 ** `emacs-bzr-version' has been renamed to `emacs-repository-version',
430 and works for git too, if you fetch the repository notes.
433 ** New option `load-prefer-newer' affects how the `load' function chooses
434 the file to load. If this is non-nil, then when both .el and .elc
435 versions of a file exist, and the caller did not explicitly specify
436 which one to load, then the newer file is loaded. The default, nil,
437 means to always load the .elc file.
440 * Editing Changes in Emacs 24.4
442 ** Indentation changes
445 *** `electric-indent-mode' is now enabled by default.
446 Typing RET reindents the current line and indents the new line.
447 `C-j' inserts a newline but does not indent. In some programming modes,
448 additional characters are electric (eg `{').
451 *** New buffer-local `electric-indent-local-mode'.
454 *** The behavior of `C-x TAB' (`indent-rigidly') has changed.
455 When invoked without a prefix argument, it now activates a transient
456 mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
457 the text indentation in the region. Typing any other key resumes
458 normal editing behavior.
461 *** `tab-stop-list' is now implicitly extended to infinity by repeating
462 the last step. Its default value is changed to nil, which means a tab
463 stop every `tab-width' columns.
466 ** New command `cycle-spacing' acts like a smarter `just-one-space'.
467 When called in succession, it cycles between spacing conventions:
468 one space, no spaces, original spacing.
471 ** The new function `fill-single-char-nobreak-p' can stop fill from breaking
472 a line after a one-letter word, which is an error in some typographical
473 conventions. To use it, add it to the `fill-nobreak-predicate' hook.
476 ** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
479 ** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
480 Most commands are still unaware of it, but kill/yank do work on the rectangle.
483 ** New option `visual-order-cursor-movement'.
484 If this is non-nil, cursor motion with arrow keys will follow the
485 visual order of characters on the screen: <left> always moves to the
486 left, <right> always moves to the right, disregarding the surrounding
487 bidirectional context.
492 *** All interactive commands that read a register (`copy-to-register', etc.)
493 now display a temporary window after `register-preview-delay' seconds
494 that summarizes existing registers. To disable this, set that option to nil.
495 Interactive commands that read registers and want to make use of this
496 should use `register-read-with-preview' to read register names.
499 *** New command `frameset-to-register' bound to `C-x r f', replacing
500 `frame-configuration-to-register'. It offers similar functionality,
501 plus enhancements like the ability to restore deleted frames.
502 (`frame-configuration-to-register' still exists, but no longer has a
506 *** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
510 ** New command `delete-duplicate-lines'.
511 This searches the region for identical lines, and removes all but one
512 copy of each repeated line. The lines need not be sorted.
515 ** `blink-matching-paren' now only highlights the matching open-paren
516 by default, instead of moving cursor. Set this variable to `jump' to
517 enable the old behavior.
520 * Changes in Specialized Modes and Packages in Emacs 24.4
523 ** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
525 ~/.emacs.d/timelog replaces ~/.timelog
526 ~/.emacs.d/vip replaces ~/.vip
527 ~/.emacs.d/viper replaces ~/.viper
528 ~/.emacs.d/ido.last replaces ~/.ido.last
529 ~/.emacs.d/kkcrc replaces ~/.kkcrc
530 ~/.emacs.d/quickurls replaces ~/.quickurls
531 ~/.emacs.d/idlwave/ replaces ~/.idlwave/
532 ~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
533 ~/.emacs.d/places replaces ~/.emacs-places
534 ~/.emacs.d/shadows replaces ~/.shadows
535 ~/.emacs.d/shadow_todo replaces ~/.shadow_todo
536 ~/.emacs.d/strokes replaces ~/.strokes
537 ~/.emacs.d/notes replaces ~/.notes
538 ~/.emacs.d/type-break replaces ~/.type-break
539 Also the following files used by the now obsolete otodo-mode.el:
540 ~/.emacs.d/todo-do replaces ~/.todo-do
541 ~/.emacs.d/todo-done replaces ~/.todo-done
542 ~/.emacs.d/todo-top replaces ~/.todo-top
544 ** Backtrace and debugger
547 *** New Lisp debugger command `v' (`debugger-toggle-locals') toggles the
548 display of local variables of the current stack frame.
551 *** The Lisp debugger's `e' command (`debugger-eval-expression') now includes
552 the lexical environment when evaluating the code in the context at point
553 (and so allows you to access lexical variables).
556 *** New minor mode `jit-lock-debug-mode' helps you debug code run via JIT Lock.
559 ** Battery information can now be retrieved from BSD's `apm' utility.
562 ** In the Buffer Menu, `M-s a C-o' shows matches for a regexp in marked buffers.
564 ** Calendar and Diary
567 *** New faces `calendar-weekday-header', `calendar-weekend-header',
568 and `calendar-month-header'.
571 *** New option `calendar-day-header-array'.
574 *** New variable `diary-from-outlook-function', used by the command
575 `diary-from-outlook'.
578 *** The variable `calendar-font-lock-keywords' is obsolete.
583 *** Calc by default now uses the Gregorian calendar for all dates, and
584 uses January 1, 1 AD as its day number 1. Previously Calc used the
585 Julian calendar for dates before September 14, 1752, and it used
586 December 31, 1 BC as its day number 1; the new scheme is more
587 consistent with Calendar's calendrical system and day numbering.
590 *** The new option `calc-gregorian-switch' lets you configure if
591 (and when) Calc switches from the Julian to the Gregorian calendar.
594 *** Support for ISO 8601 dates.
601 **** The cpp-root project now supports executing a compile command.
602 It can be set through the new :compile-command slot or the
603 buffer-local variable `compile-command'.
606 **** Better selection of include directories for the 'linux' project.
607 Include directories now support out-of-tree build directories and
608 target architecture auto-detection.
613 **** Improved detection of used namespaces in current scope in C++.
615 **** Parsing of default values for variables and function arguments in C/C++.
616 They are also displayed by the summarize feature in the mode line.
618 **** Improved parsing of function pointers in C/C++.
619 This also includes parsing of function pointers as function arguments.
621 **** Parsing of C/C++ preprocessor macros that open new scope.
622 For example, this enables parsing of macros that open new namespaces.
624 **** Support for 'this' pointer in inline member functions in C++.
629 *** New macro `cl-tagbody'.
630 This executes statements while allowing for control transfer to labels.
633 *** letf is now just an alias for cl-letf.
638 *** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
639 Hence, you can now enable it independently from those modes, and from
640 `transient-mark-mode'.
643 *** `cua-highlight-region-shift-only' is now obsolete.
644 You can disable `transient-mark-mode' to get the same result.
647 *** CUA's rectangles can now be used without CUA by calling the command
648 `cua-rectangle-mark-mode'.
653 *** Support for completion, ElDoc, and Flycheck has been added.
656 *** The current CFEngine syntax is parsed from "cf-promises -s json".
657 There is a fallback syntax available if you don't have cf-promises or
658 if your version doesn't support that option. See option `cfengine-cf-promises'.
661 ** Delete Selection mode can now be used without Transient Mark mode.
666 *** `desktop-save-mode' by default now auto-saves an existing desktop file
667 after `desktop-auto-save-timeout'. To disable this, customize that option
671 *** Desktop now saves and restores the frame/window configuration.
672 To disable this, set `desktop-restore-frames' to nil.
673 See also related options `desktop-restore-reuses-frames',
674 `desktop-restore-in-current-display', and `desktop-restore-forces-onscreen'.
677 ** New Dired minor mode `dired-hide-details-mode' toggles whether details,
678 such as file ownership or permissions, are visible.
681 ** You can enable ElDoc inside the `eval-expression' minibuffer with:
682 (add-hook 'eval-expression-minibuffer-setup-hook 'eldoc-mode)
683 The results display in the mode line.
685 ** Electric Pair mode
688 *** New option `electric-pair-preserve-balance', enabled by default.
689 If non-nil, pairing/skipping only kicks in when that help the balance
690 of parentheses and quotes, i.e. the buffer should end up at least as
693 You can further control this behavior by adjusting the predicates
694 stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
697 *** New option `electric-pair-delete-adjacent-pairs', enabled by default.
698 In `electric-pair-mode', the commands `backward-delete-char' and
699 `backward-delete-char-untabify' are now bound to electric variants
700 that delete the closer when invoked between adjacent pairs.
703 *** New option `electric-pair-open-newline-between-pairs', enabled by default.
704 In `electric-pair-mode', inserting a newline between adjacent pairs
705 opens an extra newline after point, which is indented if
706 `electric-indent-mode' is also set.
709 *** New option `electric-pair-skip-whitespace', enabled by default.
710 This controls if skipping over closing delimiters should jump over any
711 whitespace slack. Setting it to `chomp' makes it delete this
712 whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
715 *** New variables control the pairing in strings and comments.
716 You can customize `electric-pair-text-pairs' and
717 `electric-pair-text-syntax-table' to tweak pairing behavior inside
718 strings and comments.
721 ** New EPA option `epa-mail-aliases'.
722 You can set this to a list of email address aliases that `epa-mail-encrypt'
723 should use to find keys.
726 ** New ERC option `erc-accidental-paste-threshold-seconds'.
727 If set to a number, this can be used to avoid accidentally pasting large
728 amounts of data into the ERC input.
731 ** New ERT macro `skip-unless' allows skipping ERT tests.
732 See the ERT manual for details.
737 *** `eshell' now supports visual subcommands and options.
738 Eshell has been able to handle "visual" commands (interactive,
739 non-line oriented commands such as top that require display
740 capabilities not provided by eshell) by running them in an Emacs
741 terminal emulator. See `eshell-visual-commands'.
743 This feature has been extended to subcommands and options that make a
744 usually line-oriented command a visual command. Typical examples are
745 "git log" and "git <command> --help", which display their output in a
746 pager by default. See `eshell-visual-subcommands' and
747 `eshell-visual-options'.
750 *** New Eshell-Tramp module.
751 External su and sudo commands are now the default; the internal,
752 Tramp-using variants can still be used by enabling the eshell-tramp
756 ** New F90 mode option `f90-smart-end-names'.
759 Icomplete is now more similar to Ido.
762 *** Icomplete by default now applies to all forms of minibuffer completion.
763 The variable `icomplete-with-completion-tables' (now a user option)
764 controls this. To restore the old behavior, set it back to
765 '(internal-complete-buffer).
768 *** You can navigate through and select completions using the keys
769 from `icomplete-minibuffer-map'.
772 *** The string that separates potential completions is now a customizable
773 option (`icomplete-separator'). The default is " | " rather than ",".
776 *** New face `icomplete-first-match'; and new options
777 `icomplete-hide-common-prefix' and `icomplete-show-matches-on-no-input'.
780 *** The option `icomplete-show-key-bindings' has been removed.
785 *** An Ido user manual is now included.
788 *** The option `ido-use-virtual-buffers' can now take the value `auto'.
789 This means to use virtual buffers if the current ido input does not match
793 *** The variable `ido-decorations' can optionally have two new elements,
794 which are the brackets to use around the sole remaining completion.
799 *** New commands `n' (`image-next-file') and `p' (`image-previous-file')
800 visit the next image file and the previous image file in the same
801 directory, respectively.
804 *** New commands to show specific frames of multi-frame images.
805 `f' (`image-next-frame') and `b' (`image-previous-frame') visit the
806 next or previous frame. `F' (`image-goto-frame') shows a specific frame.
809 *** New commands to speed up, slow down, or reverse animation.
810 `a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
811 speed up and slow down the animation. `a r' (`image-reverse-speed')
812 to reverse it and `a 0' (`image-reset-speed') to reset it.
815 *** The command `image-mode-fit-frame' deletes other windows.
816 When toggling, it restores the frame's previous window configuration.
817 It also has an optional frame argument, which can be used by Lisp
818 callers to fit the image to a frame other than the selected frame.
823 *** New global command `M-s h .' (`highlight-symbol-at-point') highlights
824 the symbol found near point.
827 *** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
828 will cycle through faces in `hi-lock-face-defaults' without prompting.
831 ** New Imenu option `imenu-generic-skip-comments-and-strings'.
836 *** New Info face `info-index-match', used to highlight matches in index
837 entries displayed by `Info-index-next', `Info-virtual-index' and
841 *** The Info-edit command is obsolete. Editing Info nodes by hand
842 has not been relevant for some time.
847 *** New option `js-switch-indent-offset'.
850 *** Better indentation of multiple-variable declarations.
851 If a declaration spans several lines, variables on the following lines
852 are lined up to the first one.
855 *** Recognition and better indentation of continuations in array comprehensions.
858 ** MH-E has been updated to version 8.5 - see separate MH-E-NEWS file.
863 *** Font locking for Texinfo comments and new keywords.
865 *** Completion in Octave file buffers.
869 *** Jump to definition.
871 *** Documentation lookup/search.
874 ** OPascal mode is the new name for Delphi mode
877 *** All delphi-* variables and functions have been renamed to opascal-*.
878 Obsolete aliases exist for those likely to have been used externally.
881 *** The option `delphi-newline-always-indents' has been removed.
882 Use `electric-indent-mode' instead.
885 *** The TAB key runs the standard `indent-for-tab-command', not `delphi-tab'.
890 *** In the `list-packages' buffer, you can use `f' (`package-menu-filter')
891 to filter the list of packages by a keyword.
894 *** In the `describe-package' buffer, there are now buttons listing the
895 keywords related to the package. Click on a button to see other packages
896 related to that keyword.
899 *** The format of `archive-contents' files, generated by package
900 repositories, has changed to allow a new (fifth) element in the data
901 vectors, containing an associative list with extra properties.
902 (For example, `describe-package' uses the `:url' extra property to
903 display a "Homepage" header.)
906 ** In Prolog mode, `prolog-use-smie' has been removed,
907 along with the non-SMIE indentation code.
912 *** The new command `remember-notes' creates a buffer that is saved on exit.
913 You can use it as a more permanent *scratch* buffer.
916 *** Remember can now store notes in separate files.
917 To use this, add `remember-store-in-files' to the `remember-handler-functions'
918 option. The files are saved in `remember-data-directory' using
919 names specified by `remember-directory-file-name-format'.
924 *** Customize `rmail-mbox-format' to influence some minor aspects of
925 how Rmail displays non-MIME messages.
928 *** The `unrmail' command now converts from BABYL to mboxrd format,
929 rather than mboxo. Customize `unrmail-mbox-format' to change this.
934 *** Improved syntax highlighting and indentation.
937 *** New `electric-indent-mode' integration.
940 *** New option `ruby-encoding-magic-comment-style'.
943 *** New option `ruby-custom-encoding-magic-comment-template'.
946 *** New option `ruby-align-to-stmt-keywords'.
949 *** New option `ruby-align-chained-calls'.
952 *** More Ruby file types have been added to `auto-mode-alist'.
954 ** Search and Replace
957 *** New global command `M-s .' (`isearch-forward-symbol-at-point')
958 starts a symbol (identifier) incremental search forward with the
959 symbol found near point added to the search string initially.
962 *** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
963 and adds it to the search string.
966 *** `M-s i' in Isearch mode toggles whether search matches invisible text.
969 *** `query-replace' skips invisible text when `search-invisible' is nil,
970 and opens overlays with hidden text when `search-invisible' is `open'.
973 *** A negative prefix arg of replacement commands replaces backward.
974 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
975 backward, `M-s w words M-- M-%' replaces a sequence of words backward.
978 *** By default, prefix arguments do not now terminate Isearch mode.
979 Set `isearch-allow-prefix' to nil to restore old behavior.
982 *** More Isearch commands accept prefix arguments, namely
983 `isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
987 *** Word search now matches whitespace at the beginning/end
988 of the search string if it contains leading/trailing whitespace.
989 In an incremental word search or when using a non-nil LAX argument
990 of `word-search-regexp', the lax matching can also match part of
991 the first word (in addition to the lax matching of the last word).
992 The same rules are now applied to the symbol search with the difference
993 that it matches symbols, and non-symbol characters between symbols.
996 ** New SES command `ses-rename-cell' allows assignment of names to SES cells.
999 ** The shell.el option `explicit-bash-args' includes --noediting by default.
1000 All non-ancient Bash versions support this option.
1002 ** Shell Script mode
1005 *** The SMIE indentation engine is now used by default - see `sh-use-smie'.
1008 *** `sh-mode' now has its own setting for `add-log-current-defun-function'.
1013 *** You can customize the SMIE indentation of a mode via `smie-config'.
1014 The command `smie-config-guess' can help you derive the appropriate
1015 indentation settings, if you provide it with an indented sample file.
1016 Use `smie-config-save' to save the result.
1019 *** You can customize the SMIE indentation of a file by adding an entry to
1020 the file's local variables of the form: `eval: (smie-config-local '(RULES))'.
1023 *** New commands `smie-config-show-indent' and `smie-config-set-indent'.
1028 *** Improved login monitoring and appropriate response to login failures.
1029 New variable `sql-login-delay' defines maximum wait time for a connection.
1032 SQL*Plus script placeholders are properly highlighted and identified
1033 in `sql-placeholders-filter'. When starting SQL*Plus, `sql-oracle-options'
1034 are passed before the logon parameter, as required. The default now
1035 includes `-L', to limit the number of logon attempts per invocation.
1038 ** New Term mode option `term-suppress-hard-newline'.
1041 ** Todo mode has been rewritten and enhanced.
1042 The Todo mode user manual describes all commands and most user
1043 options. To support some of these features, a new file format is
1044 used, which is incompatible with the old format; however, you can
1045 convert old todo and done item files to the new format on initializing
1046 the first new todo file, or at any later time with the provided
1047 conversion command. The previous version of todo-mode.el has been
1048 renamed to otodo-mode.el and is now obsolete. New features include:
1050 *** Support for multiple todo files and archive files of done items.
1052 *** Renaming, reordering, moving, merging, and deleting categories.
1054 *** Sortable tabular summaries of categories and the item types they contain.
1056 *** Cross-category lists of items filtered by specific criteria.
1058 *** More fine-grained interaction with the Emacs diary, by being able to
1059 decide for each todo item whether it appears in the Fancy Diary display.
1061 *** Highly flexible new item insertion and item editing.
1063 *** Moving items between categories, storing done items in their category
1064 or in archive files, undoing or unarchiving done items.
1066 *** Reprioritizing items by inputting a numerical priority.
1068 *** Extensive customizability of operation and display, including many faces.
1073 *** `trace-function' and `trace-function-background' no longer prompt for
1074 the output buffer. Unless you use a prefix argument, they output to
1078 *** With a prefix argument, `trace-function' and `trace-function-background'
1079 will prompt for a "context". This is a Lisp expression, whose value at the
1080 time the function is entered/exited is printed along with the function's
1086 *** The experimental url syntax for remote file names has been removed.
1089 *** New connection method "adb", which allows to access Android
1090 devices by the Android Debug Bridge. The variable `tramp-adb-program'
1091 can be used to adapt the path of the "adb" program, if needed.
1094 *** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
1095 "scpc" and "rsyncc" are discontinued. The ssh option
1096 "ControlMaster=auto" is set automatically in all ssh-based methods,
1097 when possible. See `tramp-use-ssh-controlmaster-options'.
1100 *** Handlers for `file-acl' and `set-file-acl' for remote machines
1101 which support POSIX ACLs.
1104 *** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
1105 for remote machines which support filesystem notifications.
1108 ** New URL command `url-cookie-list' displays the current cookies,
1109 and allows you to interactively remove cookies.
1111 ** VC and related modes
1114 *** In VC directory mode, `D' displays diffs between VC-controlled
1115 whole tree revisions.
1118 *** In VC directory mode, `L' lists the change log for the current VC
1119 controlled tree in a window.
1122 *** In VC directory mode, `I' shows a log of changes that will be
1123 received with a pull operation.
1126 *** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
1127 under current version control system. When called with a prefix
1128 argument, you can remove a file from the ignored file list.
1133 *** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
1136 *** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
1139 ** The Woman commands `woman-default-faces' and `woman-monochrome-faces'
1140 are obsolete. Customize the `woman-*' faces instead.
1142 ** Obsolete packages
1145 *** iswitchb.el; use icomplete-mode.
1148 *** longlines.el; use visual-line-mode.
1157 *** terminal.el; use term.el instead.
1160 *** the old version of todo-mode.el (renamed to otodo-mode.el).
1163 *** xesam.el (owing to the cancellation of the XESAM project).
1166 *** yow.el; use fortune.el or cookie1.el instead.
1169 * New Modes and Packages in Emacs 24.4
1172 ** New package `eww' is a built-in web browser.
1173 It is only available if Emacs is compiled with libxml2 support.
1176 ** New minor mode `superword-mode'.
1177 This overrides the default word motion commands to treat "symbol_words"
1178 as a single word, similar to what `subword-mode' does.
1181 ** New package nadvice.el offers lighter-weight advice facilities.
1184 *** add-function/remove-function, which can be used to add/remove code on any
1185 function-carrying place, such as process-filters or `<foo>-function' hooks.
1187 *** advice-add/advice-remove to add/remove a piece of advice on a named
1188 function, much like `defadvice' does.
1190 ** New package frameset.el.
1191 It provides a set of operations to save a frameset (the state of all
1192 or a subset of the existing frames and windows, somewhat similar to a
1193 frame configuration), both in-session and persistently, and restore it
1194 at some point in the future.
1197 ** New package filenotify.el provides an interface for file system
1198 notifications. It requires that Emacs be compiled with one of the
1199 low-level libraries gfilenotify.c, inotify.c or w32notify.c.
1202 * Incompatible Lisp Changes in Emacs 24.4
1205 ** `kill-region' has lost its `yank-handler' optional argument.
1208 ** `(input-pending-p)' no longer runs other timers that are ready to run.
1209 The new optional CHECK-TIMERS parameter allows for the prior behavior.
1212 ** `defvar' and `defcustom' in a let-binding affect the "external" default.
1215 ** The syntax of ?» and ?« is now punctuation instead of matched parens.
1216 Some languages match those as »...«, and others as «...», so it is
1217 better for Emacs to stay neutral by default.
1220 ** In compiled Lisp files, the header no longer includes a timestamp.
1223 ** The default file coding for Emacs Lisp files is now utf-8.
1224 (See `file-coding-system-alist'.) In most cases, this change is
1225 transparent, but files that contain unusual characters without
1226 specifying an explicit coding system may fail to load with obscure
1227 errors. You should either convert them to utf-8 or add an explicit
1231 ** `overriding-terminal-local-map' no longer replaces the local keymaps.
1232 It used to disable the minor mode, major mode, and text-property keymaps,
1233 whereas now it simply has higher precedence.
1236 ** Default process filters and sentinels are not nil any more.
1237 Instead they default to a function that does what the nil value used to do.
1240 ** `read-event' does not return decoded chars in ttys any more.
1241 As was the case in Emacs 22 and before, the decoding of terminal
1242 input, according to `keyboard-coding-system', is not performed in
1243 `read-event' any more. But unlike in Emacs 22, this decoding is still
1244 done before input-decode-map, function-key-map, etc.
1247 ** The option `inhibit-local-menu-bar-menus' has been removed.
1250 ** Frame-local variables that affect redisplay do not work any more.
1251 More specifically, redisplay does not bother to check for a frame-local
1252 value when looking up variables.
1255 ** nil and "unbound" are indistinguishable in `symbol-function'.
1256 `symbol-function' does not signal a `void-function' error any more.
1257 To determine if a symbol's function definition is void, use `fboundp'.
1260 ** `defadvice' does not honor the `freeze' flag and cannot advise
1261 special-forms any more.
1264 ** `dolist' no longer binds VAR while evaluating the RESULT form,
1265 when lexical binding is enabled. Previously, VAR was bound to nil,
1266 which often led to spurious unused-variable warnings.
1269 ** The return value of `backup-buffer' has changed.
1270 The second argument is no longer an SELinux context, instead it is an
1271 alist of extended attributes as returned by the new function
1272 `file-extended-attributes'. The attributes can be applied to another
1273 file using `set-file-extended-attributes'.
1276 ** By default `copy-file' no longer copies file permission bits to an
1277 existing destination; and it sets the file permission bits of a newly
1278 created destination to those of the source, masked by the default file
1279 permissions. To copy the file permission bits, pass t as the
1280 PRESERVE-PERMISSIONS argument of `copy-file'.
1283 ** `visited-file-modtime' now returns -1 for nonexistent files.
1284 Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
1285 in the presence of files with negative time stamps.
1288 ** The cars of the elements in `interpreter-mode-alist' are now
1289 treated as regexps rather than literal strings.
1292 * Lisp Changes in Emacs 24.4
1295 ** The second argument of `eval' can now specify a lexical environment.
1298 ** New functions `special-form-p' and `macrop'.
1301 ** New macro `define-alternatives' can be used to define generic commands.
1302 Generic commands are interactive functions whose implementation can be
1303 selected among several alternatives, as a matter of user preference.
1306 ** If you give a symbol a `defalias-fset-function' property, `defalias'
1307 on that symbol will use the associated value as a function to call
1311 ** New variable `enable-dir-local-variables'.
1312 Directory-local variables are ignored if this is nil. This may be
1313 useful for modes that want to ignore directory-locals while still
1314 respecting file-local variables.
1317 ** New function `get-pos-property'.
1320 ** `read-regexp' now uses the new variable `read-regexp-defaults-function'
1321 as a function to call to provide default values.
1323 ** Completion changes
1326 *** The separator used by `completing-read-multiple' is now a regexp.
1327 The default `crm-separator' has been changed to allow surrounding spaces
1331 *** The `common-substring' argument of `display-completion-list',
1332 which has been documented as obsolete since Emacs 23.1, is now _really_
1333 obsolete, and no longer advertised. Instead either call
1334 `completion-hilit-commonality' to add the highlighting; or use
1335 `completion-all-completions', which returns highlighted strings.
1338 *** New function `completion-table-with-cache' is a wrapper for
1339 `completion-table-dynamic' that caches the result of the last lookup.
1342 *** New function `completion-table-merge' to combine several
1343 completion tables by merging their completions.
1346 ** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
1347 display specified symbols as composed characters. E.g., in Emacs Lisp mode,
1348 this replaces the string "lambda" with the Greek lambda character.
1353 *** Functions to pop up menus and dialogs now work on all terminals,
1354 including TTYs. This includes `x-popup-menu', `x-popup-dialog',
1355 `message-box', `yes-or-no-p', etc.
1357 The function `display-popup-menus-p' will now return non-nil for a
1358 display or frame whenever a mouse is supported on that display or
1362 *** New hook `tty-setup-hook', run at the end of initializing a text terminal.
1365 *** The hook `term-setup-hook' is obsolete. It is entirely equivalent
1366 to `emacs-startup-hook'. See also the new `tty-setup-hook'.
1369 ** New hook `pre-redisplay-function'.
1372 ** New bool-vector set operation functions
1373 *** `bool-vector-exclusive-or'
1374 *** `bool-vector-union'
1375 *** `bool-vector-intersection'
1376 *** `bool-vector-set-difference'
1377 *** `bool-vector-not'
1378 *** `bool-vector-subsetp'
1379 *** `bool-vector-count-consecutive'
1380 *** `bool-vector-count-population'
1383 ** Comparison functions =, <, >, <=, >= can now take many arguments.
1385 ** Error-handling changes
1388 *** New function `define-error'.
1391 *** `with-demoted-errors' takes an additional argument `format'.
1394 ** New macro `with-eval-after-load'.
1395 This is like the old `eval-after-load', but better behaved.
1398 ** New library subr-x.el with miscellaneous small utility functions
1399 *** `hash-table-keys'
1400 *** `hash-table-values'
1401 *** `string-blank-p'
1402 *** `string-empty-p'
1404 *** `string-reverse'
1405 *** `string-trim-left'
1406 *** `string-trim-right'
1408 *** `string-remove-prefix'
1409 *** `string-remove-suffix'
1412 ** Obsoleted functions
1415 *** `lisp-complete-symbol'
1416 *** `field-complete'
1417 *** `minibuffer-completion-contents'
1418 *** `isearch-nonincremental-exit-minibuffer'
1419 *** `isearch-filter-visible'
1420 *** `generic-make-keywords-list'
1421 *** `get-upcase-table' (use `case-table-get-table' instead).
1424 ** `with-wrapper-hook' is obsoleted by `add-function'.
1425 The few hooks that used with-wrapper-hook are replaced as follows:
1426 *** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
1427 *** `completion-in-region-function' obsoletes `completion-in-region-functions'.
1428 *** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
1431 ** `byte-compile-interactive-only-functions' is now obsolete.
1432 To specify that a command should only be called interactively, give it
1433 a non-nil `interactive-only' property.
1436 ** `split-string' now takes an optional argument TRIM.
1437 The value, if non-nil, is a regexp that specifies what to trim from
1438 the start and end of each substring.
1441 ** New function `string-suffix-p'.
1443 ** File-handling changes
1446 *** Support for filesystem notifications.
1447 Emacs now supports notifications of filesystem changes, such as
1448 creation, modification, and deletion of files. This requires the
1449 `glib' API, or the 'inotify' API (on GNU/Linux systems only). On
1450 MS-Windows systems, this is supported for Windows XP and newer
1454 *** The 9th element returned by `file-attributes' is now unspecified.
1455 Formerly, it was t if the file's gid would change if file were deleted
1456 and recreated. This value has been inaccurate for years on many
1457 platforms, and nobody seems to have noticed or cared.
1460 *** The 6th argument to `copy-file' has been renamed to
1461 PRESERVE-PERMISSIONS as it now handles ACL entries and the traditional
1462 Unix file permission bits as well as SELinux context.
1465 *** The function `file-ownership-preserved-p' now has an optional
1466 argument GROUP which causes it check for file group too. This can be
1467 used in place of the 9th element of `file-attributes'.
1470 *** The function `set-visited-file-modtime' now accepts a 0 or -1
1471 argument, with the same interpretation as the returned value of
1472 `visited-file-modtime'.
1474 ** Revert and Autorevert changes
1477 *** The default values of `buffer-stale-function', `revert-buffer-function',
1478 and `revert-buffer-insert-file-contents-function' are no longer nil.
1479 Instead they default to functions that do what the nil value used to.
1482 *** `buffer-stale-function' is now used for buffers visiting files too.
1485 *** If Emacs is compiled with file notification support, it uses notifications
1486 instead of checking file time stamps. To disable this, set the user option
1487 `auto-revert-use-notify' to nil. Alternatively, you can specify a regular
1488 expression matching directories to be excluded from file notifications via
1489 `auto-revert-notify-exclude-dir-regexp'.
1492 *** The new user option `auto-revert-remote-files' enables reversion
1493 of remote files, if set to non-nil.
1498 *** The function `face-spec-set' is now like `setq' for face specs.
1499 Its third arg now accepts values specifying a face spec type (defface,
1500 custom, or override spec), and the relevant spec is set accordingly.
1503 *** New function `add-face-text-property', which can be used to
1504 conveniently prepend/append new face properties.
1507 *** Face specs set via Custom themes now replace the `defface' spec
1508 rather than inheriting from it. In other words, setting a face via a
1509 theme now behaves like setting it via Customize: you only need to
1510 specify the attributes that you want, you don't need to unset those
1511 that you don't want.
1514 *** New face characteristic (supports :underline (:style wave))
1515 specifies whether or not the terminal can display a wavy line.
1518 *** New face spec attribute :distant-foreground
1519 specifies foreground to use if background color is near the foreground
1520 color that would otherwise have been used.
1525 *** `image-animated-p' is now `image-multi-frame-p'.
1526 It returns non-nil for any image that contains multiple frames,
1527 whether or not it specifies a frame delay.
1530 *** New variable `image-default-frame-delay' gives the frame delay for
1531 animated images which do not specify a frame delay.
1534 *** New functions `image-current-frame' and `image-show-frame' for getting
1535 and setting the current frame of a multi-frame image.
1540 *** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
1541 **** object-name -> eieio-object-name
1542 **** object-class -> eieio-object-class
1543 **** object-class-fast -> eieio--object-class
1544 **** object-class-name -> eieio-object-class-name
1545 **** object-name-string -> eieio-object-name-string
1546 **** object-num-slots -> eieio--object-num-slots
1547 **** object-set-name-string -> eieio-object-set-name-string
1548 **** class-of -> eieio-object-class
1549 **** class-name -> eieio-class-name
1550 **** class-parent -> eieio-class-parent
1551 **** class-parents -> eieio-class-parents
1552 **** class-parents-fast -> eieio-class-parents-fast
1553 **** class-children -> eieio-class-children
1554 **** class-num-slots -> eieio--class-num-slots
1555 **** class-precedence-list -> eieio-class-precedence-list
1556 **** class-direct-subclasses -> eieio-class-children
1557 **** class-direct-superclasses -> eieio-class-parents
1559 ** Changes in encoding and decoding of text
1562 *** New coding-system `prefer-utf-8'.
1563 This is like `undecided' but prefers UTF-8 on decoding if the text to
1564 be decoded does not contain any invalid UTF-8 sequences. On encoding,
1565 any non-ASCII characters are automatically encoded as UTF-8.
1568 *** New attributes of coding-systems whose type is `undecided'.
1569 Two new attributes, `:inhibit-null-byte-detection' and
1570 `:inhibit-iso-escape-detection', determine how to detect encoding of
1571 text that includes null bytes and ISO-2022 escape sequences,
1572 respectively. Each of these attributes can be either nil, zero, or
1573 t. If it is t, decoding text ignores null bytes and, respectively,
1574 ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
1575 with no-conversion and ISO-2022 sequences cause Emacs to assume the
1576 text is encoded in one of the ISO-2022 encodings, such as
1577 iso-2022-7bit. If the value is zero, Emacs consults the variables
1578 inhibit-null-byte-detection and inhibit-iso-escape-detection, which
1580 The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
1581 UTF-8 encoding and decoding, whenever possible.
1583 These attributes are only meaningful for coding-systems of type
1584 `undecided'. (The type of a coding-system is determined by its
1585 `:coding-type' attribute and can be accessed by calling the
1586 `coding-system-type' function.)
1589 ** The `time-to-seconds' alias to `float-time' is no longer marked obsolete.
1592 ** New functions `group-gid' and `group-real-gid'.
1595 ** The spelling of the rx.el category `chinese-two-byte' has been
1596 corrected (the first 'e' was missing).
1599 ** Minor internal changes to the details of lock files.
1600 The lock for DIR/FILE is now _always_ DIR/.#FILE.
1601 If DIR/.#FILE already exists and is not an Emacs lock file,
1602 Emacs makes no attempt to lock DIR/FILE. (Previously, it fell back to
1603 numbered lock files DIR/.#FILE.0...).
1604 On file systems that do not support symbolic links, the lock is now a
1605 regular file with contents being what would have been in the symlink.
1607 ** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1610 *** The package descriptor and name of global variables, constants,
1611 and functions should be separated by two hyphens if the symbol is not
1612 meant to be used by other packages.
1615 * Changes in Emacs 24.4 on Non-Free Operating Systems
1618 ** The procedure for building Emacs on MS-Windows has changed.
1619 It is now built by running the same configure script as on all other
1620 platforms. This requires the MSYS environment and MinGW development
1621 tools. See the updated instructions in nt/INSTALL for details.
1623 Using the Posix configure script and Makefile's also means a change in
1624 the directory structure of the Emacs installation on Windows. It is
1625 now the same as on GNU and Unix systems. In particular, the auxiliary
1626 programs, such as cmdproxy.exe and hexl.exe, are in
1627 libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1628 version), version-independent site-lisp is in share/emacs/site-lisp,
1629 version-specific Lisp files are in share/emacs/VERSION/lisp and in
1630 share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1631 files are in share/emacs/VERSION/etc. (Emacs knows about all these
1632 directories and will find the files in there automatically; there's no
1633 need to set any variables due to this change.)
1636 ** Emacs on Windows 2000 and later can now access files and directories
1637 whose names cannot be encoded in the current system codepage.
1639 The new variable `w32-unicode-filenames' controls this feature: if it
1640 is t, Emacs uses Unicode APIs to pass file names to system calls,
1641 which lifts the limitation of file names to the current locale.
1644 ** The "generate a backtrace on fatal error" feature now works on MS Windows.
1645 The backtrace is written to the 'emacs_backtrace.txt' file in the
1646 directory where Emacs was running.
1649 ** The variable `buffer-file-type' is no longer supported.
1650 Setting it has no effect, and %t in the mode-line format is ignored.
1651 Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1652 modifying it has no effect.
1655 ** Lock files now work on MS-Windows.
1656 This helps to prevent losing your edits if the same file is being
1657 edited in another Emacs session or by another user. See the node
1658 "Interlocking" in the Emacs User Manual for the details. To disable
1659 file locking, customize `create-lockfiles' to nil.
1661 ** New Core Text based font backend for Mac OS X 10.5 and newer.
1662 GNUstep and Mac OS X 10.4 use the old font backend.
1663 To use the old backend by default, do on the command line:
1664 % defaults write org.gnu.Emacs FontBackend ns
1666 ** Improved fullscreen support on Mac OS X.
1667 Emacs supports both native (Mac OS X 10.7 and newer) and "old style" fullscreen.
1668 Customize `ns-use-native-fullscreen' to change the style.
1669 For Mac OS X 10.7 and newer, native is the default.
1671 ** On Mac OS X 10.7 and newer, Emacs uses sRGB colorspace by default.
1672 Customize `ns-use-srgb-colorspace' to disable this. Note that this
1673 does not apply to images.
1676 * Installation Changes in Emacs 24.3
1678 ** The default X toolkit is now Gtk+ version 3.
1679 If you don't pass `--with-x-toolkit' to configure, or if you use
1680 `--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1681 to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
1682 You can explicitly require a specific version by passing
1683 `--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
1685 ** New configure option `--enable-link-time-optimization', to utilize
1686 an appropriate feature provided by GCC since version 4.5.0.
1688 ** New configure option `--without-all' to disable most of the optional
1689 features (image support, etc.) that are normally enabled by default.
1691 ** New configure option `--enable-gcc-warnings' (for developing/debugging
1692 Emacs). If building with GCC, this enables compile-time checks that
1693 warn/give errors about possibly-questionable C code. On a recent GNU
1694 system there should be no warnings; on older and on non-GNU systems
1695 the results may be useful to developers.
1697 ** The configure option `--enable-use-lisp-union-type' has been
1698 renamed to `--enable-check-lisp-object-type', as the resulting
1699 Lisp_Object type no longer uses a union to implement the compile time
1700 check that this option enables.
1702 ** The configure option `--disable-maintainer-mode' has been removed,
1703 as it was confusingly-named and rarely useful.
1705 ** The configure options `--program-prefix', `--program-suffix', and
1706 `--program-transform-name' apply to more than just the installed
1707 binaries. Now they also affect the man pages, icons, and the
1708 etc/emacs.desktop file; but not the info pages, since this would break
1709 links between the various manuals.
1711 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
1712 overwriting "emacs" in the installation bin/ directory with a link
1715 ** Emacs uses libtinfo in preference to libncurses, if available.
1717 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1718 /usr/pkg/lib to the linker search path. You must add them yourself if
1721 ** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
1722 (from the bin and libexec directories, respectively). The former is
1723 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1726 * Startup Changes in Emacs 24.3
1728 ** Emacs no longer searches for `leim-list.el' files beneath the standard
1729 lisp/ directory. There should not be any there anyway. If you have
1730 been adding them there, put them somewhere else; e.g., site-lisp.
1732 ** The `--no-site-lisp' command line option now works for Nextstep builds.
1735 * Changes in Emacs 24.3
1739 *** `C-h f' (`describe-function') can now perform autoloading.
1740 When this command is called for an autoloaded function whose docstring
1741 contains a key substitution construct, that function's library is
1742 automatically loaded, so that the documentation can be shown
1743 correctly. To disable this, set `help-enable-auto-load' to nil.
1745 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1746 even after their associated libraries have been loaded (and the
1747 autoloads have been redefined as functions).
1751 *** Images displayed via ImageMagick now support transparency and the
1752 :background image specification property.
1754 *** When available, ImageMagick support is automatically enabled.
1755 It is no longer necessary to call `imagemagick-register-types'
1756 explicitly to install ImageMagick image types; that function is called
1757 automatically at startup, or when customizing an imagemagick- option.
1759 *** Setting `imagemagick-types-inhibit' to t now disables the use of
1760 ImageMagick to view images. (You must call `imagemagick-register-types'
1761 afterwards if you do not use customize to change this.)
1763 *** The new variable `imagemagick-enabled-types' also affects which
1764 ImageMagick types are treated as images. The function
1765 `imagemagick-filter-types' returns the list of types that will be
1770 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1771 next and previous path separator, respectively.
1773 *** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1774 in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1775 non-nil before enabling the mode.
1779 *** New option `mode-line-default-help-echo' specifies the help text
1780 (shown in a tooltip or in the echo area) for any part of the mode line
1781 that does not have its own specialized help text.
1783 *** You can now click mouse-3 in the coding system indicator to invoke
1784 `set-buffer-file-coding-system'.
1786 ** Server and client
1788 *** emacsclient now obeys string values for `initial-buffer-choice',
1789 if it is told to open a new frame without specifying any file to visit
1790 or expression to evaluate.
1792 *** New option `server-auth-key' specifies a shared server key.
1794 ** Emacs now generates backtraces on fatal errors.
1795 On encountering a fatal error, Emacs now outputs a textual description
1796 of the fatal signal, and a short backtrace on platforms like glibc
1797 that support backtraces.
1799 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1800 This minor mode replaces `toggle-read-only', which is now obsolete.
1802 ** Most `y-or-n' prompts now allow you to scroll the selected window.
1803 Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1804 respectively, without exiting from the prompt.
1806 ** In the Package Menu, newly-available packages are listed as "new",
1807 and sorted above the other "available" packages by default.
1809 ** If your Emacs was built from a repository checkout, the new variable
1810 `emacs-bzr-version' contains information about the bzr revision used.
1812 ** New option `create-lockfiles' specifies usage of lockfiles.
1813 It defaults to t. Changing it to nil inhibits the creation of lock
1814 files (use this with caution).
1816 ** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1817 variables on remote hosts.
1819 ** The entry for PCL-CVS has been removed from the Tools menu.
1820 The PCL-CVS commands are still available via the keyboard.
1822 ** Using "unibyte: t" in Lisp source files is obsolete.
1823 Use "coding: raw-text" instead.
1825 ** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1826 has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1827 The previous binding, introduced in Emacs 24.1, was a mistake, because
1828 `C-c LETTER' bindings are reserved for user customizations.
1830 ** Internationalization
1832 *** New language environment: Persian.
1834 *** New input method `vietnamese-vni'.
1836 ** Nextstep (GNUstep / Mac OS X) port
1838 *** Support for fullscreen and the frame parameter fullscreen.
1840 *** A file dialog is used for open/save operations initiated from the
1844 * Editing Changes in Emacs 24.3
1846 ** Search and Replace
1848 *** Non-regexp Isearch now performs "lax" space matching.
1849 Each sequence of spaces in the supplied search string may match any
1850 sequence of one or more whitespace characters, as specified by the
1851 variable `search-whitespace-regexp'. (This variable is also used by a
1852 similar existing feature for regexp Isearch.)
1854 *** New Isearch command `M-s SPC' toggles lax space matching.
1855 This applies to both ordinary and regexp Isearch.
1857 *** New option `replace-lax-whitespace'.
1858 If non-nil, `query-replace' uses flexible whitespace matching too.
1861 *** Global `M-s _' starts a symbol (identifier) incremental search,
1862 and `M-s _' in Isearch toggles symbol search mode.
1863 `M-s c' in Isearch toggles search case-sensitivity.
1865 ** Navigation commands
1867 *** New binding `M-g c' for `goto-char'.
1869 *** New binding `M-g TAB' for `move-to-column'.
1871 *** `M-g TAB' (`move-to-column') prompts for a column number if called
1872 interactively with no prefix arg. Previously, it moved to column 1.
1874 ** New option `yank-handled-properties' allows processing of text
1875 properties on yanked text, in ways that are more general than just
1876 removing them (as is done by `yank-excluded-properties').
1878 ** New option `delete-trailing-lines' specifies whether
1879 M-x delete-trailing-whitespace should delete trailing lines at the end
1880 of the buffer. It defaults to t.
1882 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
1884 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1885 `ucs-insert' is now an obsolete alias for `insert-char'.
1887 ** The `z' key no longer has a binding in most special modes.
1888 It used to be bound to `kill-this-buffer', but `z' is too easy to
1891 ** New command `C-x r M-w' (`copy-rectangle-as-kill').
1892 It copies the region-rectangle as the last rectangle kill.
1896 *** `C-x r +' is now overloaded to invoke `append-to-register'.
1898 *** New option `register-separator' specifies the register containing
1899 the text to put between collected texts for use with
1900 M-x append-to-register and M-x prepend-to-register.
1903 * Changes in Specialized Modes and Packages in Emacs 24.3
1905 ** Common Lisp emulation (CL)
1907 *** CL's main entry is now (require 'cl-lib).
1908 `cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1909 i.e., all its definitions have the "cl-" prefix (and internal definitions
1910 use the "cl--" prefix).
1912 If `cl' provided a feature under the name `foo', then `cl-lib'
1913 provides it under the name `cl-foo' instead; with the exceptions of the
1914 few `cl' definitions that had to use `foo*' to avoid conflicts with
1915 pre-existing Elisp entities. These have been renamed to `cl-foo'
1916 rather than `cl-foo*'.
1918 The old `cl' is now deprecated and is mainly just a bunch of aliases that
1919 provide the old, non-prefixed names. Some exceptions are listed below:
1921 *** `cl-flet' is not like `flet' (which is deprecated).
1922 Instead it obeys the behavior of Common-Lisp's `flet'.
1923 In particular, in cl-flet function definitions are lexically scoped,
1924 whereas in flet the scoping is dynamic.
1926 *** `cl-labels' is slightly different from `labels'.
1927 The difference is that it relies on the `lexical-binding' machinery
1928 (as opposed to the `lexical-let' machinery used previously) to capture
1929 definitions in closures, so such closures will only work if `lexical-binding'
1932 *** `cl-letf' is not exactly like `letf'.
1933 The only difference is in details that relate to some deprecated usage
1934 of `symbol-function' in place forms.
1936 *** `progv' was rewritten to use the `let' machinery.
1937 A side effect is that variables without corresponding values are bound
1938 to nil rather than being made unbound.
1940 *** The following methods of extending `setf' are obsolete
1941 (use features from gv.el instead):
1942 `define-modify-macro' (use `gv-letplace')
1943 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1944 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
1945 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
1949 *** Changes are now highlighted using the same color scheme as in
1950 modern VCSes. Deletions are displayed in red (new faces
1951 `diff-refine-removed' and `smerge-refined-removed', and new definition
1952 of `diff-removed'), insertions in green (new faces `diff-refine-added'
1953 and `smerge-refined-added', and new definition of `diff-added').
1955 *** The variable `diff-use-changed-face' defines whether to use the
1956 face `diff-changed', or `diff-removed' and `diff-added' to highlight
1957 changes in context diffs.
1959 *** The new command `diff-delete-trailing-whitespace' removes trailing
1960 whitespace introduced by a diff.
1962 ** Ediff now uses the same color scheme as Diff mode.
1966 A new version of python.el, which provides several new features, including:
1967 per-buffer shells, better indentation, Python 3 support, and improved
1968 shell-interaction compatible with iPython (and virtually any other
1971 *** Some user options have been replaced/renamed, including (old -> new):
1972 **** python-indent -> python-indent-offset
1973 **** python-guess-indent -> python-indent-guess-indent-offset
1974 **** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1975 **** python-use-skeletons -> python-skeleton-autoinsert
1977 *** Some user options have been removed, including:
1979 **** `python-indent-string-contents': Strings are never indented.
1981 **** `python-honour-comment-indentation':
1982 Comments are always considered as indentation markers.
1984 **** `python-continuation-offset': Indentation is automatically
1985 calculated in a pep8 compliant way depending on the context.
1987 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1988 Have no direct mapping as the shell interaction is completely different.
1990 **** `python-python-command', `python-jython-command':
1991 Replaced by `python-shell-interpreter'.
1993 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1994 `python-pdbtrack-minor-mode-string', `python-source-modes':
1997 *** Some commands have been replaced (old -> new):
1998 **** python-insert-class -> python-skeleton-class
1999 **** python-insert-def -> python-skeleton-def
2000 **** python-insert-for -> python-skeleton-for
2001 **** python-insert-if -> python-skeleton-if
2002 **** python-insert-try/except -> python-skeleton-try
2003 **** python-insert-try/finally -> python-skeleton-try
2004 **** python-insert-while -> python-skeleton-while
2005 **** python-find-function -> python-nav-jump-to-defun
2006 **** python-next-statement -> python-nav-forward-sentence
2007 **** python-previous-statement -> python-nav-backward-sentence
2008 **** python-beginning-of-defun-function -> python-nav-beginning-of-defun
2009 **** python-end-of-defun-function -> python-nav-end-of-defun
2010 **** python-send-buffer -> python-shell-send-buffer
2011 **** python-send-defun -> python-shell-send-defun
2012 **** python-send-region -> python-shell-send-region
2013 **** python-send-region-and-go -> emulate with python-shell-send-region
2014 and python-shell-switch-to-shell
2015 **** python-send-string -> python-shell-send-string
2016 **** python-switch-to-python -> python-shell-switch-to-shell
2017 **** python-describe-symbol -> python-eldoc-at-point
2021 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
2023 *** The D-Bus object manager interface is implemented.
2025 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
2026 if their value does not fit into Emacs's integer range.
2028 *** The function `dbus-call-method' is now non-blocking.
2029 It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
2031 *** Signals can also be sent as unicast messages.
2033 *** The argument list of `dbus-register-signal' has been extended,
2034 according to the new match rule types of D-Bus.
2036 *** `dbus-init-bus' supports private connections.
2038 *** There is a new function `dbus-setenv'.
2040 ** `desktop-path' no longer includes the "." directory.
2041 Desktop files are now located in ~/.emacs.d by default.
2045 *** `dired-do-async-shell-command' executes each file sequentially
2046 if the command ends in `;' (when operating on multiple files).
2047 Otherwise, it executes the command on each file in parallel.
2049 *** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
2050 `dired-do-chown', and `dired-do-touch' yanks the attributes of the
2053 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
2054 `DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
2055 mark/unmark/flag all files in the active region.
2057 *** The minibuffer default for `=' (`dired-diff') has changed.
2058 It is now the backup file for the file at point, if one exists.
2059 In Transient Mark mode the default is the file at the active mark.
2061 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
2062 The global binding for `M-=', `count-words-region' is in effect.
2066 *** New module "notifications", which can send a notification when you
2067 receive a private message or your nickname is mentioned.
2069 *** ERC will look up server/channel names via auth-source and use any
2072 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
2073 only applies to messages sent by lurkers.
2075 ** reStructuredText mode
2077 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
2078 fontification, comment handling, and customization have all been revised
2081 *** Support for `imenu' and `which-function-mode'.
2083 *** The reStructuredText syntax is more closely covered.
2084 Sphinx support has been improved.
2086 *** `rst-insert-list' inserts new list or continues existing lists.
2088 *** A negative prefix argument always works for `rst-adjust'.
2090 *** The window configuration is reset after displaying a TOC.
2092 *** The constant `rst-version' describes the rst.el package version.
2096 *** Support for percent literals and recognition of regular expressions
2097 in method calls without parentheses with more methods, including Cucumber
2100 *** Improved syntax highlighting and indentation.
2102 *** New command `ruby-toggle-block', bound to `C-c {'.
2104 *** Some non-standard keybindings/commands have been removed:
2106 **** `ruby-electric-brace'; use `electric-indent-mode' instead.
2108 **** `ruby-mark-defun'; use `mark-defun'.
2110 **** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
2111 appropriate settings for the variables `beginning-of-defun-function'
2112 and `end-of-defun-function'.
2114 **** Non-standard keybindings for `backward-kill-word', `comment-region',
2115 `reindent-then-newline-and-indent' and `newline' have been removed.
2117 ** Shell Script mode
2119 *** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
2121 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
2123 *** `sh-use-smie' lets you choose a new indentation and navigation code.
2127 *** The free software compiler GHDL is supported (and now the default).
2129 *** Support for the VHDL-AMS packages has been added/updated.
2131 *** Updated to the 2002 revision of the VHDL standard.
2133 *** Accepts \r and \f as whitespace.
2137 *** The faces used by Apropos are now directly customizable.
2138 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
2139 see the `apropos' Custom group for details.
2141 *** The old options whose values specified faces to use have been removed
2142 (i.e. `apropos-symbol-face', `apropos-keybinding-face', `apropos-label-face',
2143 `apropos-match-face' and `apropos-property-face'.).
2147 *** This package has been rewritten to use Tabulated List mode.
2149 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
2150 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
2154 *** Algebraic simplification mode is now the default.
2155 To restrict to the limited simplifications given by the former
2156 default simplification mode, use `m I'.
2160 *** You can customize the header text that appears above each calendar month.
2161 See the variable `calendar-month-header'.
2163 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
2165 *** The calendars produced by cal-html include holidays.
2166 Customize `cal-html-holidays' to change this.
2170 *** The major modes from the parser generators "Bovine" and "Wisent"
2171 are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
2172 are in `auto-mode-alist', and the corresponding manuals are included.
2176 **** Menu support for the "Configuration" feature. This allows users to
2177 choose the active configuration (such as debug or install) from the menu.
2179 **** New command `ede-set' to interactively set project-local variables.
2181 **** Support for compiling, debugging, and running in "generic" projects.
2183 **** Autoconf editing support for M4 macros with complex arguments.
2185 **** Compilation support for the "linux" project type.
2187 **** "simple" projects have been removed; use "generic" projects instead.
2191 **** Support for parsing #include statements inside a namespace in C/C++.
2193 **** Improved support for 'extern "C"' declarations in C/C++.
2195 **** The ability to ignore more common special C/C++ preprocessor symbols,
2196 such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
2197 If available, include cdefs.h as an additional source of preprocessor symbols.
2199 **** Improved C/C++ function pointer parsing.
2201 **** In Python, support for converting imports to include file names.
2203 **** Ability to dynamically determine the Python load path.
2205 **** Support for the Python 'WITH' and 'AT' keywords.
2207 **** Improved tooltip completion.
2211 **** The SRecode manual is now included.
2213 **** Tag generation supports constructor/destructor settings and system
2214 include differentiation.
2216 **** Addition of 'Framework' support: Frameworks are specified when a
2217 particular kind of library (such as Android) is needed in a common language
2220 **** Support for nested templates and let variables override based on priority.
2222 **** Support for merging tables from multiple related modes, such as
2223 default -> c++ -> arduino.
2225 ** Compile has a new option `compilation-always-kill'.
2229 *** `custom-reset-button-menu' now defaults to t.
2231 *** Non-option variables are never matched in `customize-apropos' and
2232 `customize-apropos-options' (i.e., the prefix argument does nothing for
2233 these commands now).
2237 *** The variables `term-default-fg-color' and `term-default-bg-color'
2238 are now deprecated in favor of the customizable face `term'.
2240 *** You can customize how to display ANSI terminal colors and styles
2241 by customizing the corresponding `term-color-<COLOR>',
2242 `term-color-underline' and `term-color-bold' faces.
2246 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
2248 *** Remote processes are now also supported on remote MS-Windows hosts.
2252 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
2253 Previously, this slot stored semicolon-separated attribute-value pairs
2254 appended to some imap URLs, but this is not compatible with RFC 3986.
2255 So now the `filename' slot stores the entire path and query components,
2256 and the `attributes' slot is always nil.
2258 *** New function `url-encode-url' for encoding a URI string.
2259 The `url-retrieve' function now uses this to encode its URL argument,
2260 in case that is not properly encoded.
2262 ** notifications.el supports now version 1.2 of the Notifications API.
2263 The function `notifications-get-capabilities' returns the supported
2266 ** Flymake uses fringe bitmaps to indicate errors and warnings.
2267 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
2268 `flymake-warning-bitmap'.
2270 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
2271 specifying URL types that should be converted to remote file names at
2272 the FFAP prompt. The default is now '("ftp").
2274 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
2275 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
2277 ** New option `mouse-avoidance-banish-position' specifies where the
2278 `banish' mouse avoidance setting moves the mouse.
2280 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
2281 closing brackets to be aligned with the line of the opening bracket.
2283 ** In Proced mode, new command `proced-renice' renices marked processes.
2285 ** New option `async-shell-command-buffer' specifies the buffer to use
2286 for a new asynchronous `shell-command' when the default output buffer
2287 `*Async Shell Command*' is already in use.
2289 ** SQL mode has a new option `sql-db2-escape-newlines'.
2290 If non-nil, newlines sent to the command interpreter will be escaped
2291 by a backslash. The default does not escape the newlines and assumes
2292 that the sql statement will be terminated by a semicolon.
2294 ** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
2295 (and modes that derive from it), sorts the column at point, or the Nth
2296 column if a numeric prefix argument is given.
2298 ** `which-func-modes' now defaults to t, so Which Function mode, when
2299 enabled, applies to all applicable major modes.
2301 ** `winner-mode-hook' now runs when the mode is disabled, as well as when
2304 ** Follow mode no longer works by using advice.
2305 The option `follow-intercept-processes' has been removed.
2307 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
2309 ** Hooks renamed to avoid obsolete "-hooks" suffix:
2310 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
2311 *** semantic-change-hooks -> semantic-change-functions
2312 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
2313 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
2314 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
2315 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
2316 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
2317 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
2318 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
2319 *** rcirc-activity-hooks -> rcirc-activity-functions
2320 *** rcirc-print-hooks -> rcirc-print-functions
2321 *** dbus-event-error-hooks -> dbus-event-error-functions
2322 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
2323 *** checkdoc-style-hooks -> checkdoc-style-functions
2324 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
2325 *** archive-extract-hooks -> archive-extract-hook
2326 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
2327 *** hfy-post-html-hooks -> hfy-post-html-hook
2328 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
2329 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
2330 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
2331 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
2333 ** Obsolete packages
2336 In most cases, assoc+member+push+delq work just as well.
2337 And in any case it's just a terrible package: ugly semantics, terrible
2338 inefficiency, and not namespace-clean.
2347 * Incompatible Lisp Changes in Emacs 24.3
2349 ** Docstrings starting with `*' no longer indicate user options.
2350 Only variables defined using `defcustom' are considered user options.
2351 The function `user-variable-p' is now an obsolete alias for
2352 `custom-variable-p'.
2354 ** The return values of `defalias', `defun' and `defmacro' have changed,
2355 and are now undefined. For backwards compatibility, `defun' and
2356 `defmacro' currently return the name of the newly defined
2357 function/macro, but this should not be relied upon.
2359 ** `random' by default now returns a different random sequence in
2360 every Emacs run. Use `(random S)', where S is a string, to set the
2361 random seed to a value based on S, in order to get a repeatable
2362 sequence in later calls.
2364 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
2365 that substring is inserted literally even if the LITERAL arg is
2366 non-nil, instead of causing an error to be signaled.
2368 ** `select-window' now always makes the window's buffer current.
2369 It does so even if the window was selected before.
2371 ** The function `x-select-font' can return a font spec, instead of a
2372 font name as a string. Whether it returns a font spec or a font name
2373 depends on the graphical library.
2375 ** `face-spec-set' no longer sets frame-specific attributes when the
2376 third argument is a frame (that usage was obsolete since Emacs 22.2).
2378 ** `set-buffer-multibyte' now signals an error in narrowed buffers.
2380 ** The CL package's `get-setf-method' function no longer exists.
2381 Generalized variables are now part of core Emacs Lisp, and implemented
2382 differently to the way cl.el used to do it. It is not possible to
2383 define a compatible replacement for `get-setf-method'. See the file
2384 gv.el for internal details of the new implementation.
2386 ** The arguments of `dbus-register-signal' are no longer just strings,
2387 but keywords or keyword-string pairs. The old argument list will
2388 still be supported for Emacs 24.x.
2390 ** Miscellaneous name changes
2391 Some Lisp symbols have been renamed to correct their spelling,
2392 or to be more consistent with standard Emacs terminology.
2394 *** Renamed functions
2395 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
2396 **** inactivate-input-method -> deactivate-input-method
2397 **** quail-inactivate -> quail-deactivate
2398 **** robin-inactivate -> robin-deactivate
2399 **** viper-inactivate-input-method -> viper-deactivate-input-method
2400 **** viper-inactivate-input-method-action ->
2401 viper-deactivate-input-method-action
2402 **** ucs-input-inactivate -> ucs-input-deactivate
2405 The old hooks are still supported for backward compatibility, but they
2406 are deprecated and will be removed eventually.
2407 **** input-method-inactivate-hook -> input-method-deactivate-hook
2408 **** robin-inactivate-hook -> robin-deactivate-hook
2409 **** quail-inactivate-hook -> quail-deactivate-hook
2411 *** Renamed variables
2412 **** follow-deactive-menu -> follow-inactive-menu
2413 **** inactivate-current-input-method-function ->
2414 deactivate-current-input-method-function
2416 ** Some obsolete functions, variables, and faces have been removed:
2417 *** `last-input-char', `last-command-char', `unread-command-char'
2418 *** `facemenu-unlisted-faces'
2419 *** `rmail-decode-mime-charset'
2420 *** `iswitchb-read-buffer'
2421 *** `sc-version', `sc-submit-bug-report'
2422 *** `set-char-table-default'
2423 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
2424 *** `compile-internal'
2426 *** `mode-line-inverse-video'
2427 *** `follow-mode-off-hook'
2428 *** `cvs-commit-buffer-require-final-newline'
2429 (use `log-edit-require-final-newline' instead)
2430 *** `cvs-changelog-full-paragraphs'
2431 (use `log-edit-changelog-full-paragraphs' instead)
2432 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
2433 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
2434 *** `vc-master-templates' (use `vc-handled-backends' instead)
2435 *** `vc-checkout-carefully'
2438 * Lisp Changes in Emacs 24.3
2440 ** CL-style generalized variables are now in core Elisp.
2441 `setf' is autoloaded; `push' and `pop' accept generalized variables.
2442 You can define your own generalized variables using `gv-define-simple-setter',
2443 `gv-define-setter', etc.
2445 ** Emacs tries to macroexpand interpreted (non-compiled) files during load.
2446 This can significantly speed up execution of non-byte-compiled code,
2447 but can also bump into previously unnoticed cyclic dependencies.
2448 These are generally harmless: they will simply cause the macro calls
2449 to be left for later expansion (as before), but will result in a
2450 warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
2451 You may wish to restructure your code so this does not happen.
2453 ** New sampling-based Elisp profiler.
2454 Try M-x profiler-start, do some work, and then call M-x profiler-report.
2455 When finished, use M-x profiler-stop. The sampling rate can be based on
2456 CPU time or memory allocations.
2458 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
2459 The interpretation of the DECLS is determined by `defun-declarations-alist'.
2461 ** New macros `setq-local' and `defvar-local'.
2463 ** Face underlining can now use a wave.
2465 ** `read-regexp' has a new argument HISTORY; the first argument PROMPT
2466 of `read-regexp' accepts a string ending with a colon and space, and its
2467 second argument DEFAULTS can be a list of strings accessible via `M-n'
2468 in the minibuffer ahead of other hard-coded useful regexp-related values.
2469 More commands use `read-regexp' now to read their regexp arguments.
2473 *** New function `completion-table-with-quoting' to handle completion
2474 in the presence of quoting, such as file completion in shell buffers.
2476 *** New function `completion-table-subvert' to use an existing completion
2477 table, but with a different prefix.
2481 *** New error type and new function `user-error'.
2482 These do not trigger the debugger.
2484 *** New option `debugger-bury-or-kill', saying what to do with the
2485 debugger buffer when exiting debug.
2487 *** Set `debug-on-message' to enter the debugger when a certain
2488 message is displayed in the echo area. This can be useful when trying
2489 to work out which code is doing something.
2491 *** New var `inhibit-debugger', automatically set to prevent accidental
2492 recursive invocations.
2496 *** New command `fit-frame-to-buffer' adjusts the frame height to
2499 *** The command `fit-window-to-buffer' can adjust the frame height
2500 if the new option `fit-frame-to-buffer' is non-nil.
2502 *** New macro `with-temp-buffer-window', similar to
2503 `with-output-to-temp-buffer'.
2505 *** `temp-buffer-resize-mode' no longer resizes windows that have been
2508 *** New option `switch-to-buffer-preserve-window-point' to restore a
2509 window's point when switching buffers.
2511 *** New display action alist entries `window-height' and `window-width'
2512 specify the size of new windows created by `display-buffer'.
2514 *** New display action alist entry `pop-up-frame-parameters', if
2515 non-nil, specifies frame parameters to give any newly-created frame.
2517 *** New display action alist entry `inhibit-switch-frame', if non-nil,
2518 tells display action functions to avoid changing which frame is
2521 *** New display action alist entry `previous-window', if non-nil,
2522 specifies window to reuse in `display-buffer-in-previous-window'.
2524 *** New display action functions `display-buffer-below-selected',
2525 and `display-buffer-in-previous-window'.
2527 *** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
2528 now accept a third argument to avoid choosing the selected window.
2530 *** Additional values recognized for option `window-combination-limit'.
2532 *** The following variables are obsolete, as they can be replaced by
2533 appropriate entries in the `display-buffer-alist' function introduced
2535 **** `dired-shrink-to-fit'
2536 **** `display-buffer-reuse-frames'
2537 **** `display-buffer-function'
2538 **** `special-display-buffer-names'
2539 **** `special-display-frame-alist'
2540 **** `special-display-function'
2541 **** `special-display-regexps'
2545 *** `current-time-string' no longer requires that its argument's year
2546 must be in the range 1000..9999. It now works with any year supported
2547 by the underlying C implementation.
2549 *** `current-time' now returns extended-format time stamps
2550 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
2551 PSEC is typically a multiple of 1000 on current machines. Other
2552 functions that use this format, such as `file-attributes' and
2553 `format-time-string', have been changed accordingly. Old-format time
2554 stamps are still accepted.
2556 *** The format of timers in `timer-list' and `timer-idle-list' is now
2557 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
2558 The PSECS slot is new, and uses picosecond resolution. It can be
2559 accessed via the new `timer--psecs' accessor.
2561 *** Last-modified time stamps in undo lists now are of the form
2562 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
2566 *** Improved security when handling persistent objects:
2568 **** `eieio-persistent-read' now features optional arguments for specifying
2569 the class to load, as well as a flag stating whether subclasses are allowed;
2570 if provided, other classes will be rejected by the reader. For
2571 compatibility with existing code, if the class is omitted only a
2574 **** New specialized reader for pulling in classes and signaling errors
2575 without evaluation of suspicious code.
2577 **** All slots that contain objects must have a :type. Slots with lists
2578 of objects must use a new type predicate for a list of an object type.
2580 *** Support for `find-function' and similar utilities, through the addition
2581 of filename support to generated symbols.
2583 ** Floating point functions now always return special values like NaN,
2584 instead of signaling errors, if given invalid args; e.g., (log -1.0).
2585 Previously, they returned NaNs on some platforms but signaled errors
2586 on others. The affected functions are acos, asin, tan, exp, expt,
2587 log, log10, sqrt, and mod.
2589 ** New fringe bitmap `exclamation-mark'.
2591 ** Miscellaneous changes to special forms and macros
2593 *** `defun' and `defmacro' are now macros rather than special forms.
2595 *** `kbd' is now a function rather than a macro.
2597 ** Miscellaneous new functions
2599 *** `set-temporary-overlay-map' sets up a temporary keymap that
2600 takes precedence over most other maps for a short while (normally one key).
2602 *** `autoloadp' tests if its argument is an autoloaded object.
2604 *** `autoload-do-load' performs the autoloading operation.
2606 *** `buffer-narrowed-p' tests if the buffer is narrowed.
2608 *** `file-name-base' returns a file name sans directory and extension.
2610 *** `function-get' fetches a function property, following aliases.
2612 *** `posnp' tests if an object is a `posn'.
2614 *** `system-users' returns the user names on the system.
2616 *** `system-groups' returns the group names on the system.
2618 *** `tty-top-frame' returns the topmost frame of a text terminal.
2620 ** The following functions and variables are obsolete:
2621 *** `automount-dir-prefix' (use `directory-abbrev-alist')
2622 *** `buffer-has-markers-at'
2623 *** `macro-declaration-function' (use `macro-declarations-alist')
2624 *** `window-system-version' (provides no useful information)
2625 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
2626 *** `query-replace-interactive'
2627 *** `font-list-limit' (has had no effect since Emacs < 23)
2630 * Changes in Emacs 24.3 on Non-Free Operating Systems
2632 ** Cygwin builds can use the native MS Windows user interface.
2633 Pass `--with-w32' to configure. The default remains the X11 interface.
2635 ** Two new functions are available in Cygwin builds:
2636 `cygwin-convert-file-name-from-windows' and
2637 `cygwin-convert-file-name-to-windows'. These functions allow Lisp
2638 code to access the Cygwin file-name mapping machinery to convert
2639 between Cygwin and Windows-native file and directory names.
2641 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
2642 Emacs now supports `mouse-highlight', help-echo (in the echo area), and
2643 `mouse-autoselect-window'.
2645 ** On MS Windows Vista and later Emacs now supports symbolic links.
2647 ** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
2648 support for libxml2, even if its presence is detected.
2650 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2652 ** On Mac OS X, configure no longer automatically adds the Fink "/sw"
2653 directories to the search path. You must add them yourself if you want them.
2656 * Changes in Emacs 24.2
2658 ** This is mainly a bug-fix release.
2661 * Installation Changes in Emacs 24.1
2663 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2664 to configure. Note that other libraries used by Emacs, RSVG and GConf,
2665 also depend on Gtk+. You can disable them with --without-rsvg and
2668 ** Emacs can be compiled with GnuTLS support.
2669 This happens by default if a suitably recent version of the library is
2670 found at build time. To prevent this, use the configure option
2671 `--without-gnutls'. See below for GnuTLS features.
2673 ** Emacs can be compiled with SELinux support.
2674 This happens by default if a suitably recent version of the library is
2675 found at build time. To prevent this, use the configure option
2676 `--without-selinux'. See below for SELinux features.
2678 ** Emacs can be compiled with ImageMagick support.
2679 This happens by default if a suitably recent version of the library is
2680 found at build time. To prevent this, use the configure option
2681 `--without-imagemagick'. See below for ImageMagick features.
2682 This feature is not available for the Nextstep or MS ports.
2684 ** Emacs can be compiled with libxml2 support.
2685 This happens by default if a suitably recent version of the library is
2686 found at build time. To prevent this, use the configure option
2687 `--without-xml2'. See below for libxml2 features.
2689 ** By default, the installed Info and man pages are compressed.
2690 You can disable this by configuring --without-compress-info.
2692 ** New configure option --with-wide-int.
2693 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
2694 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2697 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
2698 These provide no new functionality, they just remove the need to edit
2699 lib-src/Makefile by hand in order to use the associated features.
2701 ** New configure option --enable-use-lisp-union-type.
2702 This is only useful for Emacs developers to debug certain types of bugs.
2703 This is not a new feature; only the configure flag is new.
2705 ** The standalone programs digest-doc and sorted-doc are removed.
2706 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2708 ** The standalone program `fakemail' is removed.
2709 If you need it, feedmail.el provides a superset of the functionality.
2712 * Startup Changes in Emacs 24.1
2714 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
2715 command line arguments, and the EMACS_UNIBYTE environment variable, no
2716 longer have any effect. (They were declared obsolete in Emacs 23.)
2718 ** New command line option `--no-site-lisp' removes site-lisp directories
2719 from load-path. -Q now implies this. This option does not affect the
2720 EMACSLOADPATH environment variable (and hence has no effect for
2724 * Changes in Emacs 24.1
2728 *** Many packages now use the `completion-at-point' command,
2729 rather than implementing separate completion commands.
2731 *** `completion-at-point' now handles tags and semantic completion.
2733 *** Completion in a non-minibuffer now tries to detect the end of completion
2734 and pops down the *Completions* buffer accordingly.
2736 *** New option `completion-cycle-threshold' allows completion cycling.
2738 *** New option `completion-category-overrides' for overriding the
2739 default completion style in certain circumstances.
2741 *** New completion style `substring'.
2743 *** Completion of buffer names uses `substring' completion by default.
2745 *** The option `widget-complete-field' has been removed.
2749 *** The first time you try sending mail, Emacs asks for a mail method.
2750 This is implemented by a new default for `send-mail-function', which
2751 is `sendmail-query-once'. This offers to use the smtpmail package, or
2752 to use the old defaults relying on external mail facilities
2753 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2754 `mailclient-send-it' on Windows).
2756 *** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2757 transfers the report to your desktop's preferred mail client, if there
2758 is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2761 *** See Changes in Specialized Modes and Packages for SMTPmail changes
2762 and Mail mode changes
2764 ** Emacs server and client changes
2766 *** New option `server-port' specifies the port for TCP Emacs servers.
2768 *** New emacsclient argument -q/--quiet suppresses some status messages.
2770 *** New emacsclient argument --frame-parameters specifies the frame
2771 parameters of any newly-created graphical frame.
2773 *** If emacsclient shuts down due to Emacs signaling an error,
2774 its exit status is 1.
2776 *** New emacsclient argument --parent-id ID.
2777 This opens a client frame in parent X window ID, via XEmbed, similar
2778 to the --parent-id argument to Emacs.
2780 ** Internationalization changes
2782 *** Emacs now supports display and editing of bidirectional text.
2783 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2784 displayed in the correct visual order as expected by users of those
2785 scripts. The display reordering is a "full bidirectionality" class
2786 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2787 with no RTL text should look exactly the same as before.
2789 **** New buffer-local variable `bidi-display-reordering'.
2790 To disable display reordering in a buffer, change this to nil.
2792 **** New buffer-local variable `bidi-paragraph-direction'.
2793 If nil (the default), Emacs determines the base direction of each
2794 paragraph from its text, as specified by the UBA. Setting the value
2795 to `right-to-left' or `left-to-right' forces a base direction on each
2798 Paragraphs with right-to-left base direction are displayed starting at
2799 the right window edge.
2801 *** Enhanced support for characters with no glyphs in available fonts,
2802 or, on text terminals, characters that cannot be encoded by the
2803 terminal coding system. The new option `glyphless-char-display-control'
2804 specifies how to display them: as a hexadecimal code in a box, a thin
2805 1-pixel space, an empty box, etc.
2807 *** New input methods for Farsi and Bulgarian
2808 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
2810 *** `nobreak-char-display' now also highlights Unicode hyphen chars
2811 (U+2010 and U+2011).
2813 *** New Hebrew translation of the Emacs Tutorial.
2814 Type `C-u C-h t' to choose it in case your language setup doesn't
2815 automatically select it.
2817 ** An Emacs Lisp package manager is now included.
2818 This is a convenient way to download and install additional packages,
2819 from a package repository at http://elpa.gnu.org.
2821 *** M-x list-packages shows a list of packages, which can be
2822 selected for installation.
2824 *** New command `describe-package', bound to `C-h P'.
2826 *** By default, all installed packages are loaded automatically when
2827 Emacs starts up. To disable this, set `package-enable-at-startup' to
2828 nil. To specify the packages to load, customize `package-load-list'.
2830 ** Custom theme changes
2832 *** New command `M-x customize-themes', which provides a convenient
2833 interface for enabling and disabling Custom themes.
2835 *** New option `custom-theme-load-path' is the load path for themes.
2836 Emacs no longer looks for Custom themes in `load-path'. The default
2837 value of `custom-theme-load-path' says to look for themes in
2838 `custom-theme-directory', followed by a subdirectory of
2839 `data-directory' named "themes/", which contains a small selection of
2840 built-in Custom themes.
2842 *** New option `custom-safe-themes' records known-safe theme files.
2843 If a theme is not in this list, Emacs queries before loading it, and
2844 offers to save the theme to `custom-safe-themes' automatically. By
2845 default, all themes included in Emacs are treated as safe.
2847 ** Improved GTK integration
2849 *** GTK scroll-bars are now placed on the right by default.
2850 The function `set-scroll-bar-mode' can change this.
2852 *** GTK tool bars can have just text, just images or images and text.
2853 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2854 the default is taken from desktop settings.
2856 *** GTK tool bars can be placed on any edge of the frame.
2857 The frame-parameter tool-bar-position controls this. It takes the
2858 values top, left, right or bottom. The Options => Show/Hide menu has
2861 *** The default colors for selected text (the `region' face) are taken
2862 from the GTK theme when Emacs is built with GTK.
2864 *** Emacs uses GTK tooltips by default if built with GTK.
2865 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
2867 ** Graphical interface changes
2869 *** On graphical displays, the mode-line no longer ends in dashes.
2870 Also, the first dash (which does not indicate anything) is just
2871 displayed as a space.
2873 *** `menu-bar-select-buffer-function' lets you choose another operation
2874 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2876 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
2877 built with Xft. These fonts can be set via X resources, for example:
2878 Emacs.pane.menubar.font: Courier-12
2882 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
2883 or if it receives a SIGINT signal in batch mode.
2885 *** `kill-emacs-hook' is now also run in batch mode.
2886 Third-party code which adds to `kill-emacs-hook' should check if they
2887 do the right thing in batch mode.
2889 ** Scrolling changes
2891 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
2892 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
2893 of buffer at first key-press (instead they move to top/bottom of buffer)
2894 when `scroll-error-top-bottom' is non-nil.
2896 *** New option `scroll-error-top-bottom' (see above).
2898 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
2899 scroll a line instead of full screen.
2901 *** New property `scroll-command' should be set on a command's symbol to
2902 define it as a scroll command affected by `scroll-preserve-screen-position'.
2904 *** If you customize `scroll-conservatively' to a value greater than 100,
2905 Emacs will never recenter point in the window when it scrolls due to
2906 cursor motion commands or commands that move point (e.f., `M-g M-g').
2907 Previously, you needed to use `most-positive-fixnum' as the value of
2908 `scroll-conservatively' to achieve the same effect.
2910 *** "Aggressive" scrolling now honors the scroll margins.
2911 If you customize `scroll-up-aggressively' or
2912 `scroll-down-aggressively' and move point off the window, Emacs now
2913 scrolls the window so as to avoid positioning point inside the scroll
2916 ** Basic SELinux support has been added.
2917 This requires Emacs to be linked with libselinux at build time.
2919 *** Emacs preserves the SELinux file context when backing up.
2920 Also, the function `copy-file' has an extra optional argument for
2921 preserving SELinux context, and the return value of `backup-buffer'
2922 now includes the SELinux context.
2924 *** New functions `file-selinux-context' and `set-file-selinux-context'
2925 get and set the SELinux context of a file.
2929 *** `delete-by-moving-to-trash' now only affects commands that specify
2930 trashing. This avoids inadvertently trashing temporary files.
2932 *** Calling `delete-file' or `delete-directory' with a prefix argument
2933 now forces true deletion, regardless of `delete-by-moving-to-trash'.
2935 ** File- and directory-local variable changes
2937 *** You can stop directory local vars from applying to subdirectories.
2938 Add an element (subdirs . nil) to the alist portion of any variables
2939 settings to indicate that the section should not apply to
2942 *** Directory local variables can apply to some file-less buffers.
2943 Affected modes include dired, vc-dir, and log-edit. For example,
2944 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2945 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2946 `hack-dir-local-variables-non-file-buffer' to support this.
2948 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2949 Instead, use "eval: (minor-mode 1)".
2951 *** The variable `inhibit-first-line-modes-regexps' has been renamed
2952 to `inhibit-local-variables-regexps'. As the name suggests, it now
2953 applies to ALL file local variables, not just -*- lines. The
2954 associated `inhibit-first-line-modes-suffixes' has been renamed in the
2959 *** The `quit-window' command now restores the last buffer displayed
2960 in the quitted window.
2962 *** Resizing an Emacs frame now preserves proportional window sizes,
2963 modulo restrictions like window minimum sizes and fixed-size windows.
2965 *** The behavior of `display-buffer' is now customizable in detail.
2967 **** New option `display-buffer-base-action' specifies a list of
2968 user-determined display "actions" (functions and optional arguments
2969 for choosing the displaying window).
2971 This takes precedence over the default display action, which is
2972 specified by `display-buffer-fallback-action'.
2974 **** New option `display-buffer-alist' maps buffer name regexps to
2975 display actions, taking precedence over `display-buffer-base-action'.
2977 *** New option `window-combination-limit'.
2978 The new option `window-combination-limit' allows to return the space
2979 obtained for resizing or creating a window more reliably to the window
2980 from which such space was obtained.
2982 *** New option `window-combination-resize'.
2983 The new option `window-combination-resize' allows to split a window that
2984 otherwise cannot be split because it's too small by stealing space from
2985 other windows in the same combination. Subsequent resizing or deletion
2986 of the window will resize all windows in the same combination as well.
2988 *** New option `frame-auto-hide-function' lets you choose between
2989 iconifying or deleting a frame when burying a buffer in a dedicated
2990 frame, or quitting a window showing a buffer in a frame of its own.
2992 *** New commands `maximize-window' and `minimize-window'.
2993 These maximize and minimize the size of a window within its frame.
2995 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2996 These functions allow to navigate through the live buffers that have
2997 been shown in a specific window.
2999 ** Minibuffer changes
3001 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
3002 This is handy for minibuffer-only frames, and is also used for the feature
3003 where mouse-1 pops up *Messages*"', which can now easily be changed.
3005 *** Minibuffers set `truncate-lines' to nil.
3006 If you want to change the value to something else, you could use
3007 for example `minibuffer-setup-hook'.
3009 ** `auto-mode-case-fold' is now enabled by default.
3011 ** `backup-by-copying-when-mismatch' now defaults to t.
3013 ** New basic faces `error', `warning', `success'.
3014 These are used to highlight text indicating failure, caution or
3015 successful operation.
3017 ** New option `list-colors-sort' defines the color sort order
3018 for `list-colors-display'.
3020 ** The variable `focus-follows-mouse' now always defaults to nil.
3023 * Editing Changes in Emacs 24.1
3027 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
3028 `isearch-yank-line'.
3030 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
3031 `isearch-yank-kill'.
3033 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
3035 ** New commands `count-words-region' and `count-words'.
3037 *** M-= is bound to `count-words-region', not `count-lines-region'.
3038 The `count-words-region' command, when called interactively, reports
3039 the number of lines, words, and characters in the region. It is a
3040 superset of the old `count-lines-region', which is now an obsolete
3043 ** The command `just-one-space' (M-SPC), if given a negative argument,
3044 also deletes newlines around point.
3048 *** New option `delete-active-region'.
3049 If non-nil, [delete] and DEL delete the region if it is active and no
3050 prefix argument is given. If set to `kill', those commands kill
3053 *** New command `delete-forward-char', bound to [delete].
3054 This is meant for interactive use, and obeys `delete-active-region'.
3055 The command `delete-char' does not obey `delete-active-region'.
3057 *** `delete-backward-char' is now a Lisp function.
3058 Apart from obeying `delete-active-region', its behavior is unchanged.
3059 However, the byte compiler now warns if it is called from Lisp; Lisp
3060 callers should use delete-char with a negative argument instead.
3062 *** The option `mouse-region-delete-keys' has been deleted.
3064 ** Selection changes.
3066 The default handling of clipboard and primary selections has been
3067 changed to conform with modern X applications. In short, most
3068 commands for killing and yanking text now use the clipboard, while
3069 mouse commands use the primary selection.
3071 In the following, we provide a list of these changes, followed by a
3072 list of steps to get the old behavior back if you prefer that.
3074 *** `select-active-regions' now defaults to t.
3075 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
3076 the kill ring. The selected text is put in the primary selection, if
3077 the system possesses a separate primary selection facility (e.g. X).
3079 **** `select-active-regions' also accepts a new value, `only'.
3080 This means to only set the primary selection for temporarily active
3081 regions (usually made by mouse-dragging or shift-selection);
3082 "ordinary" active regions, such as those made with C-SPC followed by
3083 point motion, do not alter the primary selection.
3085 **** `mouse-drag-copy-region' now defaults to nil.
3087 *** mouse-2 is now bound to `mouse-yank-primary'.
3088 This pastes from the primary selection, ignoring the kill-ring.
3089 Previously, mouse-2 was bound to `mouse-yank-at-click'.
3091 *** `x-select-enable-clipboard' now defaults to t on all platforms.
3093 *** `x-select-enable-primary' now defaults to nil.
3094 Thus, commands that kill text or copy it to the kill-ring (such as
3095 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
3097 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
3098 exactly equivalent to M-w, C-w, and C-y respectively.
3100 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
3101 non-nil by default, as Windows does not support the primary selection
3102 between applications.
3104 *** To return to the previous behavior, do the following:
3106 **** Change `select-active-regions' to nil.
3107 **** Change `mouse-drag-copy-region' to t.
3108 **** Change `x-select-enable-primary' to t (on X only).
3109 **** Change `x-select-enable-clipboard' to nil.
3110 **** Bind `mouse-yank-at-click' to mouse-2.
3112 *** Support for X cut buffers has been removed.
3114 *** X clipboard managers are now supported.
3115 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
3117 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
3118 in the current rectangle. With a prefix argument, this prompts for a
3119 number to count from and for a format string.
3121 ** `redisplay-dont-pause' now defaults to t.
3122 This makes Emacs feel more responsive to editing commands that arrive
3123 at high rate, e.g. if you lean on some key, because stopping redisplay
3124 in the middle (when this variable is nil) forces more expensive
3125 updates later on, and Emacs appears to be unable to keep up.
3127 ** The behavior of <TAB> for active regions in Text mode has changed.
3128 In Text and related modes, typing <TAB> (`indent-for-tab-command')
3129 when the region is active causes Emacs to indent all the lines in the
3130 region, aligning them with the line previous to the first line in the
3131 region (or with the left margin if there is no previous line).
3133 ** When `occur' is called with a prefix argument, matching strings are
3134 collected into the `*Occur*' buffer without line numbers. If there
3135 are parenthesized subexpressions in the specified regexp, `occur'
3136 reads replacement text that may contain \\& and \\N whose convention
3137 follows `replace-match'.
3140 * Changes in Specialized Modes and Packages in Emacs 24.1
3142 ** Archive Mode has basic support for browsing and updating 7z archives.
3146 *** BibTeX mode now supports biblatex.
3147 Use the variable `bibtex-dialect' to select different BibTeX dialects.
3148 `bibtex-entry-field-alist' is now an obsolete alias for
3149 `bibtex-BibTeX-entry-alist'.
3151 *** New command `bibtex-search-entries', bound to C-c C-a.
3153 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
3155 *** New variable `bibtex-search-entry-globally'.
3159 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
3161 *** The default browser used by the package is now the "xdg-open" program,
3162 on platforms that support it. This calls your desktop's preferred browser.
3166 *** Support for musical notes.
3168 *** Support for logarithmic units.
3170 *** No longer uses the tex prefix for TeX specific unit names when
3171 using TeX or LaTeX mode.
3173 *** New option to highlight selections using faces.
3175 *** `calc-histogram' has the option of using a vector to determine the bins.
3177 *** New "O" option prefix.
3179 *** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
3181 ** Calendar, Diary, and Appt
3183 *** Diary entries can contain non-printing "comments".
3184 See the variable `diary-comment-start'.
3186 *** Appointments can specify their individual warning times.
3187 See the variable `appt-warning-time-regexp'.
3189 *** The function specified by `appt-disp-window-function' may be passed
3190 lists of arguments if multiple appointments are due at similar times.
3191 If you are using a custom function for this, you should update it.
3193 *** New function `diary-hebrew-birthday'.
3195 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
3196 may no longer be nil, but must all be strings.
3198 *** The obsolete (since Emacs 22.1) method of enabling the appt
3199 package by adding `appt-make-list' to `diary-hook' has been removed.
3200 Use `appt-activate' instead.
3202 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
3203 appt-issue-message (use the function appt-activate)
3204 appt-visible/appt-msg-window (use the variable appt-display-format)
3206 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
3207 view-diary-entries, list-diary-entries, show-all-diary-entries
3211 *** New feature to "guess" the style in an existing buffer.
3212 The main entry point is M-x c-guess.
3214 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
3216 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
3217 Thus C-M-a will, by default, go to the beginning of the immediate function,
3220 *** "Macros with semicolons" can be registered for correct indentation.
3221 Where such a macro ends a line (no semicolon) the next statement is no longer
3222 parsed as a statement continuation.
3224 ** Comint and modes derived from it use the standard completion code.
3228 *** Compilation mode can be used without Font Lock mode.
3229 `compilation-parse-errors-function' is now obsolete.
3231 *** New variable `compilation-filter-start', which is bound while
3232 `compilation-filter-hook' runs. It records the start position of the
3233 text inserted by `compilation-filter'.
3235 *** `compilation-error-screen-columns' and `compilation-first-column'
3236 are obeyed in the editing buffer. So programming language modes can
3237 set them, whereas previously only the value in the *Compilation*
3242 *** Customize buffers now contain a search field.
3243 The search is performed using `customize-apropos'.
3244 To turn off the search field, set `custom-search-field' to nil.
3246 *** Options in customize group buffers start out hidden if not customized.
3247 Use the arrow to the left of the option name to toggle visibility.
3249 *** custom-buffer-sort-alphabetically now defaults to t.
3251 *** The color widget now has a "Choose" button, which allows you to
3252 choose a color via `list-colors-display'.
3256 *** It is now possible to access buses other than the default system
3259 *** The `dbus-register-method' and `dbus-register-property' functions
3260 optionally do not register names.
3262 *** The new function `dbus-register-service' registers a known service
3263 name on a D-Bus without also registering a property or a method.
3267 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
3268 if called with a prefix argument, read a file name from the minibuffer
3269 instead of using the current buffer.
3271 *** The "dired local variables" feature of Dired-x is obsolete.
3272 The standard directory local variables feature replaces it.
3276 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
3277 controlling attempts to autojoin a channel.
3279 *** New variable `erc-coding-system-precedence': If we use `undecided'
3280 as the server coding system, this variable will then be consulted.
3281 The default is to decode strings that can be decoded as utf-8 as
3282 utf-8, and do the normal `undecided' decoding for the rest.
3286 *** The default value of `eshell-directory-name' has changed
3287 to be an "eshell" directory in `user-emacs-directory'.
3288 The old "~/.eshell/" directory is still used if it exists, though.
3292 *** The M-x gdb command now uses the GDB Machine Interface protocol.
3293 It now supports multithread non-stop debugging and simultaneous
3294 debugging of several threads.
3298 *** RET (`image-toggle-animation') toggles animation, if applicable.
3299 Animation plays once, unless the option `image-animate-loop' is non-nil.
3303 *** New command M-x info-display-manual displays a named Info manual.
3304 If that manual is already visited in some Info buffer, it displays
3305 that buffer. (This is handy if you have many manuals in many *info*
3306 buffers, and don't remember the name of the buffer visiting the manual
3307 you want to consult.) Otherwise, it loads and displays the manual.
3309 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
3310 This is for compatibility with the stand-alone Info reader program,
3311 and also because `Info-edit' is a rarely used command that is disabled
3314 ** Mail mode changes (not Message mode)
3316 *** New command M-x mail-add-attachment for adding MIME attachments
3318 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
3319 (Its name is misleading, since it has nothing to do with MIME
3320 attachments.) The old name is now an obsolete alias to the new name.
3322 ** MH-E has been updated to MH-E version 8.3.1.
3323 See MH-E-NEWS for details.
3325 ** Modula-2 mode provides auto-indentation.
3327 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3329 ** nXML mode no longer binds C-RET to `nxml-complete'.
3330 Completion is now performed via `completion-at-point', bound to C-M-i
3331 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
3332 default), this performs tag completion.
3334 ** Org mode has been updated to version 7.8.09.
3335 See ORG-NEWS for details.
3337 ** Prolog mode has been completely revamped, with lots of additional
3338 functionality such as more intelligent indentation, electricity,
3339 support for more variants, including Mercury, and a lot more.
3343 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
3344 in the Rmail incoming message.
3346 *** The variable `rmail-message-filter' no longer has any effect.
3347 This change was made in Emacs 23.1 but was not advertised at the time.
3348 Try using `rmail-show-message-hook' instead.
3352 *** M-x shell prompts for the shell path name if the default directory
3353 is a remote file name and neither the environment variable $ESHELL nor
3354 the variable `explicit-shell-file-name' is set.
3356 *** TAB is now bound to the standard `completion-at-point' command,
3357 which now implements the pcomplete rules for shell command completion.
3361 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
3362 if the mail server supports them. This uses either built-in GnuTLS
3363 support, or the starttls.el library. Customize `smtpmail-stream-type'
3366 *** The variable `smtpmail-auth-credentials' has been removed.
3367 By default, the information is now stored in the file ~/.authinfo.
3368 This was the default value of smtpmail-auth-credentials. If you had
3369 customized smtpmail-auth-credentials to a list of user names and
3370 passwords, those settings are not used. During your first connection
3371 to the smtp server, Emacs will prompt for the user name and password,
3372 and offer to save them to ~/.authinfo. Or you can manually copy the
3373 credentials to ~/.authinfo. For example, if you had
3375 (setq smtpmail-auth-credentials
3376 '(("mail.example.org" 25 "jim" "s!cret")))
3378 then the equivalent line in ~/.authinfo would be
3380 machine mail.example.org port 25 login jim password s!cret
3382 See the auth-source manual for more information, e.g. on encrypting
3383 the credentials file.
3385 *** The variable `smtpmail-starttls-credentials' has been removed.
3386 If you had that set, you need to put
3388 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
3390 in your ~/.authinfo file instead.
3392 *** SMTPmail defaults to using the address in the From: header as the
3393 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
3394 to the address you wish to use instead.
3398 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
3399 and `sql-oracle-scan-on'.
3401 *** New options controlling prompting for login parameters.
3402 Each supported product has a custom variable `sql-*-login-params',
3403 which is a list of the parameters to be prompted for before a
3404 connection is established.
3406 *** The command `sql-product-interactive' now takes a prefix argument,
3407 which causes it to prompt for an SQL product.
3409 *** Product-specific SQL interactive commands now take prefix arguments.
3410 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
3411 given a prefix argument, prompt for a name for the SQL interactive
3412 buffer. This reduces the need for calling `sql-rename-buffer'.
3414 *** SQL interactive modes suppress command continuation prompts, and
3415 replace tabs with spaces. The first change impacts multiple line SQL
3416 statements entered with C-j between each line, statements yanked into
3417 the buffer and statements sent with `sql-send-*' functions. The
3418 second prevents the MySQL and Postgres interpreters from listing
3419 object name completions when sent text via `sql-send-*' functions.
3421 *** New command `sql-connect' starts a predefined SQLi session,
3422 using the login parameters from `sql-connection-alist'.
3424 *** New "Save Connection" menu item in SQLi buffers.
3425 This gathers the login params specified for the SQLi session, if it
3426 was not started by a connection, and saves them as a new connection.
3428 *** New commands for listing database objects and details:
3429 sql-list-all and sql-list-table.
3431 *** An API for manipulating SQL product definitions has been added.
3435 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
3439 *** New inline access method "ksu" (kerberized su).
3441 *** The following access methods are discontinued: "ssh1_old",
3442 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
3444 *** The user option `remote-file-name-inhibit-cache' controls whether
3445 remote file attributes are cached for better performance.
3447 *** The option `ange-ftp-binary-file-name-regexp' has changed its
3448 default value to "".
3450 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
3451 for remote machines which support SELinux.
3453 ** New function `url-queue-retrieve', which behaves like url-retrieve,
3454 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
3455 the degree of parallelism.
3457 ** VC and related modes
3459 *** Support for pulling on distributed version control systems.
3460 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
3461 supported (currently with Bzr, Git, and Mercurial), to update the
3462 current branch and working tree. A prefix argument means to prompt
3463 the user for specifics, e.g. a pull location.
3465 *** `vc-update' is now an alias for `vc-pull'.
3467 *** Support for merging on distributed version control systems.
3468 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
3469 is supported (currently with Bzr, Git, and Mercurial), to merge
3470 changes from another branch into the current one. It prompts for
3471 specifics, e.g. a merge source.
3473 *** New option `vc-revert-show-diff' controls whether `vc-revert'
3474 shows a diff while querying the user. It defaults to t.
3476 *** Log entries in some Log View buffers can be toggled to display a
3477 longer description by typing RET (log-view-toggle-entry-display).
3478 This is currently supported for Bzr, Git, and Mercurial (to support
3479 another backend, define a `log-view-expanded-log-entry-function').
3480 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
3481 use this to display the full log entry for the revision at point.
3483 *** New command `vc-ediff' allows visual comparison of two revisions
3484 of a file similar to `vc-diff', but using ediff backend.
3486 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
3487 this was not advertised at the time.
3489 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
3490 Since Emacs 23, it has done the same thing as `toggle-read-only', but
3491 this was not advertised at the time.
3497 *** erc-hecomplete.el (use erc-pcomplete.el instead)
3499 *** partial-completion-mode (complete.el) is obsolete.
3500 You can get a comparable behavior with:
3501 (setq completion-styles '(partial-completion initials))
3502 (setq completion-pcm-complete-word-inserts-delimiters t)
3504 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
3506 *** pgg is obsolete (use EasyPG instead).
3508 *** sregex.el is obsolete, since rx.el is a strict superset.
3510 *** s-region.el and pc-select.el are obsolete.
3511 They are superseded by shift-select-mode, enabled by default since 23.1.
3513 *** vc-mcvs.el is obsolete (for lack of a maintainer).
3517 *** The Landmark game is now invoked with `landmark', not `lm'.
3518 Its functions and variables have been similarly renamed.
3520 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
3521 (This interfered with cua-mode.)
3523 *** f90.el has some support for Fortran 2008 syntax.
3525 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
3527 *** New command `nato-region' converts text to NATO phonetic alphabet.
3530 * New Modes and Packages in Emacs 24.1
3532 ** Occur Edit mode applies edits made in *Occur* buffers to the
3533 original buffers. It is bound to "e" in Occur mode.
3535 ** New global minor mode electric-pair-mode.
3536 When enabled, typing an open parenthesis automatically inserts the
3537 matching closing one.
3539 ** New global minor mode electric-indent-mode.
3540 When enabled, typing certain characters triggers reindentation.
3541 Major modes wishing to use this can set electric-indent-chars or
3542 electric-indent-functions.
3544 ** New global minor mode electric-layout-mode.
3545 When enabled, typing certain characters automatically inserts newlines.
3546 Major modes wishing to use this can set electric-layout-rules.
3548 ** tabulated-list.el provides a generic major mode for tabulated data,
3549 from which other modes can be derived.
3551 ** pcase.el provides the ML-style pattern matching macro `pcase'.
3553 ** secrets.el is an implementation of the Secret Service API, an
3554 interface to password managers like GNOME Keyring or KDE Wallet. The
3555 Secret Service API requires D-Bus for communication. The command
3556 `secrets-show-secrets' offers a buffer with a visualization of the
3559 ** notifications.el provides an implementation of the Desktop
3560 Notifications API. It requires D-Bus for communication.
3562 ** soap-client.el supports access to SOAP web services from Emacs.
3563 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
3565 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
3567 ** New emacs-lock.el package.
3568 The previous version has been moved to obsolete/old-emacs-lock.el.
3569 Now, there is a proper minor mode `emacs-lock-mode'. Protection
3570 against exiting Emacs and killing the buffer can be set separately.
3571 The mechanism for automatically turning off protection for buffers
3572 with dead inferior processes has been generalized.
3575 * Incompatible Lisp Changes in Emacs 24.1
3577 ** Passing a nil argument to a minor mode function call now ENABLES
3578 the minor mode unconditionally. This is so that you can write e.g.
3580 (add-hook 'text-mode-hook 'foo-mode)
3582 to enable foo-mode in Text mode buffers, removing the need for
3583 `turn-on-foo-mode' style functions. This affects all mode commands
3584 defined by `define-minor-mode'. If called interactively, the mode
3585 command still toggles the minor mode.
3587 ** The return value of `backup-buffer' has changed.
3588 It is now a list of three elements, where the second element is a list
3589 describing the original file's SELinux context. If Emacs or the
3590 system lacks SELinux support, the context list is (nil nil nil nil).
3591 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
3593 ** `char-direction-table' and the `char-direction' function were deleted.
3594 They were buggy and inferior to the new support of bidirectional
3595 editing introduced in Emacs 24. If you need the bidirectional
3596 properties of a character, use `get-char-code-property' with the last
3597 argument `bidi-class'.
3599 ** `copy-directory' now copies the source directory as a subdirectory
3600 of the target directory, if the latter is an existing directory. The
3601 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3602 the contents directly into a pre-existing target directory.
3604 ** For mouse click input events in the text area, the Y pixel
3605 coordinate in the POSITION list now counts from the top of the text
3606 area, excluding any header line. Previously, it counted from the top
3609 ** Support for "old-style" backquotes, obsolete for 10+ years, has
3610 been further reduced. Now a backquote not followed by a space is
3611 always treated as a "new-style" backquote. Please remove all
3612 "old-style" backquotes from your code. If your code uses backquotes
3613 as documented in the Elisp manual, and compiles without warning, then
3614 you have nothing to do in this regard. Code not following the
3615 appropriate conventions may fail to compile.
3617 The most common cause of trouble seems to be an old-style backquote
3618 followed by a newline. Another cause of trouble is vector notation
3619 for key sequence notation: instead of [(control ,)] and [(control ')],
3620 you should write [(control ?,)] and [(control ?')], which will work in
3623 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3624 was not advertised at the time. The function `custom-initialize-delay'
3625 replaced all known uses.
3627 ** `view-buffer' now treats special mode-class in the same way that
3628 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3629 major mode is special).
3631 ** Menu and tool bar changes
3633 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
3634 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3635 With these alist entries omitted, `make-frame' checks the value of the
3636 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3637 a menu-bar or tool-bar, respectively. If the alist entries are added,
3638 they override the value of `menu-bar-mode'/`tool-bar-mode'.
3640 *** The menu bar bindings's caches are not used any more.
3641 Use (where-is-internal <def> nil t) instead.
3643 ** Regions created by mouse dragging are now normal active regions,
3644 similar to those created by shift-selection (see Selection changes
3645 above). In previous Emacs versions, these regions were delineated by
3646 `mouse-drag-overlay'; that variable has been removed.
3648 ** The fourth argument of `filter-buffer-substring' has been removed.
3649 If you want to remove text properties from the final result, simply
3650 pass the result through substring-no-properties.
3652 ** cl.el no longer provides `cl-19'.
3654 ** The following obsolete functions and aliases have been removed
3655 (the appropriate new function is given in parentheses; "not needed"
3656 means you can just remove all calls to the function in question):
3658 *** `comint-kill-output' (`comint-delete-output')
3659 *** `decompose-composite-char' (`char-to-string')
3660 *** `outline-visible' (`outline-invisible-p')
3661 *** `internal-find-face' (`facep')
3662 *** `internal-get-face' (`facep and check-face')
3663 *** `frame-update-faces' (not needed)
3664 *** `frame-update-face-colors' (`frame-set-background-mode')
3665 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
3666 *** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
3667 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3668 *** `x-make-font-bold-italic' (`make-face-bold-italic')
3669 *** `x-make-font-unbold' (`make-face-unbold')
3670 *** `x-make-font-unitalic' (`make-face-unitalic')
3671 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3672 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3673 *** `iswitchb-default-keybindings' (`iswitchb-mode')
3674 *** `char-bytes' (== 1)
3675 *** `isearch-return-char' (`isearch-printing-char')
3676 *** `make-local-hook' (not needed)
3677 *** `set-screen-height' (`set-frame-height')
3678 *** `set-screen-width' (`set-frame-width')
3680 ** The following obsolete variables and varaliases have been removed
3681 (the appropriate new variable is given in parentheses):
3683 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3684 *** `vc-header-alist' (`vc-BACKEND-header')
3685 *** `directory-sep-char' (== ?/)
3686 *** `font-lock-defaults-alist' (`font-lock-defaults')
3687 *** `e' (`float-e').
3689 ** The following obsolete files were removed:
3690 sc.el, x-menu.el, rnews.el, rnewspost.el
3692 ** The format of the finder-inf.el file has changed, since the Finder
3693 mechanism is now based on the package system. The variable
3694 `finder-package-info' is replaced by `package--builtins' and
3695 `finder-keywords-hash'.
3697 ** When generating autoloads, `update-directory-autoloads' no longer
3698 assumes every inspected file is in your `load-path'. It instead
3699 generates relative names according to the current `load-path'.
3702 * Lisp Changes in Emacs 24.1
3704 ** Code can now use lexical scoping by default instead of dynamic scoping.
3705 The `lexical-binding' variable enables lexical scoping for local
3706 variables. It is typically set via a file-local variable in the first
3707 line of the file, in which case it applies to all the code in that
3710 *** `eval' takes a new optional argument `lexical' to choose the new lexical
3711 binding instead of the old dynamic binding mode.
3713 *** Lexically scoped interpreted functions are represented with a new form
3714 of function value which looks like (closure ENV ARGS &rest BODY).
3716 *** New macro `letrec' to define recursive local functions.
3718 *** `defvar' and `defconst' now mark the variable as special (dynamic).
3719 So do `defcustom' and other forms that call `defvar' as a subroutine.
3721 *** New function `special-variable-p' to check whether a variable is
3722 declared as dynamically bound.
3724 *** The form ((lambda ...) ...) is deprecated.
3726 ** An Emacs Lisp testing tool is now included.
3727 Emacs Lisp developers can use this tool to write automated tests for
3728 their code. See the ERT info manual for details.
3730 ** Changes for bidirectional display and editing
3732 *** New function `current-bidi-paragraph-direction'.
3733 This returns the base direction of the paragraph at point.
3735 *** New function `bidi-string-mark-left-to-right'.
3736 Given a string containing characters from right-to-left scripts, this
3737 function returns another string which can be safely inserted into a
3738 buffer, such that any following text will be always displayed to the
3739 right of that string. (This works by appending an invisible Unicode
3740 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
3742 This is useful when the buffer has overall left-to-right paragraph
3743 direction and you need to insert a string whose contents are not known
3744 in advance, without disrupting the layout of the line.
3748 *** Window tree functions are accessible in Elisp.
3749 Functions are provided to return the parent, siblings or child windows
3750 of any window including internal windows (windows not associated with a
3751 buffer) in the window tree.
3753 **** New function `window-valid-p' gives non-nil for live and internal
3756 **** Window manipulation can deal with internal windows.
3757 Many window handling functions like `split-window', `delete-window', or
3758 `delete-other-windows' as well as the window resizing functions can now
3759 act on any window including internal ones.
3761 *** window-total-height/-width vs window-body-height/-width.
3762 The function `window-height' has been renamed to `window-total-height'
3763 and `window-width' has been renamed to `window-body-width'. The old
3764 names are provided as aliases. Two new functions `window-total-width'
3765 and `window-body-height' are provided.
3767 *** Window parameters specific to window handling functions.
3768 For each window you can specify a parameter to override the default
3769 behavior of a number of functions like `split-window', `delete-window'
3770 and `delete-other-windows'. The variable `ignore-window-parameters'
3771 allows to ignore processing such parameters.
3773 *** New semantics of third argument of `split-window'.
3774 The third argument of `split-window' has been renamed to SIDE and can be
3775 set to any of the values 'below, 'right, 'above, or 'left to make the
3776 new window appear on the corresponding side of the window that shall be
3777 split. Any other value of SIDE will cause `split-window' to split the
3778 window into two side-by-side windows as before.
3780 *** Window resizing functions.
3781 A new standard function for resizing windows called `window-resize' has
3782 been introduced. This and all other functions for resizing windows no
3783 longer delete any windows when they become too small.
3785 *** Deleting the selected window now selects the most recently selected
3786 live window on that frame instead.
3788 *** `adjust-window-trailing-edge' adjustments.
3789 `adjust-window-trailing-edge' can now deal with fixed-size windows and
3790 is able to resize other windows if a window adjacent to the trailing
3791 edge cannot be shrunk any more. This makes its behavior more similar to
3792 that of Emacs 21 without compromising, however, its inability to delete
3793 windows which was introduced in Emacs 22.
3795 *** Window-local buffer lists.
3796 Windows now have local buffer lists. This means that removing a buffer
3797 from display in a window will preferably show the buffer previously
3798 shown in that window with its previous window-start and window-point
3799 positions. This also means that the same buffer may be automatically
3800 shown twice even if it already appears in another window.
3802 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3803 which if non-nil requires the buffer to be displayed in the currently
3804 selected window, signaling an error otherwise. If nil, another window
3805 can be used, e.g. if the selected one is strongly dedicated.
3807 *** `split-window-vertically' and `split-window-horizontally' renamed
3808 to `split-window-below' and `split-window-right' respectively.
3809 The old names are kept as aliases.
3813 **** The second arg to `display-buffer' and `pop-to-buffer' is now
3814 named ACTION, and takes a display action of the same form as
3815 `display-buffer-base-action' (see Changes, above). A non-nil,
3816 non-list value is treated specially, as the old meaning.
3818 **** New variable `display-buffer-overriding-action'.
3820 **** The procedure of `display-buffer' etc. to choose a window is
3821 determined by combining `display-buffer-overriding-action',
3822 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3823 and `display-buffer-fallback-action'. The second and fourth of these
3824 are user-customizable variables.
3826 See the docstring of `display-buffer' for details.
3828 *** New functions `window-state-get' and `window-state-put'.
3829 These functions allow to save and restore the state of an arbitrary
3830 frame or window as an Elisp object.
3834 *** New variable `completion-extra-properties' used to specify extra
3835 properties of the current completion:
3836 - :annotate-function, same as the old completion-annotate-function.
3837 - :exit-function, function to call after completion took place.
3839 *** Functions on `completion-at-point-functions' can return any of the
3840 properties valid for `completion-extra-properties'.
3842 *** `completion-annotate-function' is obsolete.
3844 *** New `metadata' method for completion tables. The metadata thus returned
3845 can specify various details of the data returned by `all-completions':
3846 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3847 used to select a style in completion-category-overrides.
3848 - `annotation-function' to add annotations in *Completions*.
3849 - `display-sort-function' to specify how to sort entries in *Completions*.
3850 - `cycle-sort-function' to specify how to sort entries when cycling.
3852 *** `minibuffer-local-filename-must-match-map' is not used any more.
3853 Instead, the bindings in `minibuffer-local-filename-completion-map'
3854 are combined with `minibuffer-local-must-match-map'.
3856 *** New variable `completing-read-function' allows overriding the
3857 behavior of `completing-read'.
3859 ** `glyphless-char-display' can now distinguish between graphical and
3860 text terminal display, via a char-table entry that is a cons cell.
3862 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
3863 Instead, the offending function is removed.
3867 *** New function `run-hook-wrapped' for running an abnormal hook by
3868 passing the hook functions as arguments to a "wrapping" function.
3869 Like `run-hook-with-args-until-success', it stops at the first
3870 non-nil return value.
3872 *** New macro `with-wrapper-hook' for running an abnormal hook as a
3873 set of "wrapping" filters, similar to around advice.
3874 (A version of this macro was actually added in Emacs 23.2 but was not
3875 advertised at the time.)
3879 *** New macro `condition-case-unless-debug' (this was actually added in
3880 Emacs 23.1 as condition-case-no-debug, but not advertised)
3882 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
3884 *** Variable `stack-trace-on-error' removed.
3886 *** The debugger can now "continue" from an error, which means it will
3887 jump to the error handler as if the debugger had not been invoked
3888 instead of jumping all the way to the top-level.
3890 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3891 This can be useful when `inhibit-quit' is set.
3893 ** The new function `server-eval-at' allows evaluation of Lisp forms on
3894 named Emacs server instances.
3896 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
3897 to redirect STDOUT to a file.
3899 ** The function `format-time-string' now supports the %N directive,
3900 for higher-resolution time stamps.
3902 ** New input reading functions
3904 *** New function `read-char-choice' reads a restricted set of
3905 characters, discarding any inputs not inside the set.
3907 *** The command `read-color' now requires a match for a color name
3908 or RGB triplet, instead of signaling an error if the user provides
3911 **** `facemenu-read-color' is now an alias for `read-color'.
3913 ** `image-library-alist' is renamed to `dynamic-library-alist'.
3914 The variable is now used to load all kind of supported dynamic libraries,
3915 not just image libraries. The previous name is still available as an
3918 ** Syntax parsing changes
3920 *** New variable `syntax-propertize-function'.
3921 This replaces `font-lock-syntactic-keywords' which is now obsolete.
3922 This allows syntax-table properties to be set independently from font-lock:
3923 just call syntax-propertize to make sure the text is propertized.
3924 Together with this new variable come a new hook
3925 syntax-propertize-extend-region-functions, as well as two helper functions:
3926 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3927 as-is; and syntax-propertize-rules which provides a new way to specify
3930 *** Syntax tables support a new "comment style c" additionally to style b.
3932 ** New hook `post-self-insert-hook', run after `self-insert-command'.
3934 ** frame-local variables cannot be let-bound any more.
3936 ** Major and minor mode changes
3938 *** `set-auto-mode' now respects mode: local variables at the end of files,
3939 as well as those in the -*- line.
3941 *** `prog-mode' is a new major mode from which programming modes
3944 **** `prog-mode-hook' can be used to enable features for programming
3945 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3946 on-the-fly spell checking for comments and strings.
3948 *** New hook `change-major-mode-after-body-hook', run by
3949 `run-mode-hooks' just before any other mode hooks.
3951 *** Enabled globalized minor modes can be disabled in specific major modes.
3952 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3953 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
3955 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
3957 ** File-handling changes
3959 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
3960 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3961 both non-nil. Interactively, TRASH defaults to t, unless a prefix
3962 argument is supplied (see Trash changes, above).
3964 *** New file predicates: `file-equal-p', `file-in-directory-p'.
3966 ** Tool-bars can display separators.
3967 Tool-bar separators are handled like menu separators in menu-bar maps,
3968 i.e. via menu entries of the form `(menu-item "--")'.
3972 *** Animated images support (currently animated gifs only).
3974 **** `image-animated-p' returns non-nil if an image can be animated.
3976 **** `image-animate' animates a supplied image spec.
3978 **** `image-animate-timer' returns the timer object for an image that
3981 *** `image-extension-data' has been renamed to `image-metadata'.
3982 The old name is an obsolete alias to the new one.
3984 *** Image mode can view any image type that ImageMagick supports.
3985 This requires Emacs to be built with ImageMagick support.
3987 **** New function `imagemagick-types', defined if ImageMagick support
3988 is enabled, returns a list of image file extensions that your
3989 ImageMagick installation supports.
3991 **** New function `imagemagick-register-types' enables ImageMagick
3992 image types in Image mode and in `create-image' and other helper
3995 **** New option `imagemagick-types-inhibit' excludes certain
3996 ImageMagick image types from `imagemagick-register-types'.
3998 **** With ImageMagick support, there are extra Image mode commands to
3999 resize and rotate images: `image-transform-fit-to-height',
4000 `image-transform-fit-to-width', `image-transform-set-rotation', and
4001 `image-transform-set-scale'.
4003 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
4004 passes it to the mail user agent function. This argument specifies an
4005 action for returning to the caller after finishing with the mail. For
4006 example, this is used by Rmail to optionally delete a mail window.
4008 ** XML and HTML parsing
4009 If Emacs is compiled with libxml2 support, there are two new
4010 functions: `libxml-parse-html-region' (which parses "real world" HTML)
4011 and `libxml-parse-xml-region' (which parses XML). Both return an
4012 Emacs Lisp parse tree.
4014 ** Networking and encryption changes
4016 *** `open-network-stream' can now be used to open an encrypted stream.
4017 It now accepts an optional `:type' parameter for initiating a TLS
4018 connection, directly or via STARTTLS. To do STARTTLS, additional
4019 parameters (`:end-of-command', `:success', `:capabilities-command')
4020 must also be supplied.
4022 *** New library gnutls.el.
4023 The new function `gnutls-available-p' returns non-nil if Emacs is
4024 built with GnuTLS support. The main entry points are
4025 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
4026 these functions through `open-network-stream', because that can
4027 upgrade connections through STARTTLS opportunistically or use plain
4028 SSL, depending on your needs. For debugging, set `gnutls-log-level'
4031 *** New primitive `secure-hash' that supports many secure hash algorithms:
4032 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
4033 sha1.el has been removed. The `sha1' feature is provided by default.
4037 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
4039 ** Progress reporters can now "spin".
4040 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
4041 now be nil, or omitted. This makes a "non-numeric" reporter. Each
4042 time you call `progress-reporter-update' on that progress reporter,
4043 with a nil or omitted VALUE argument, the reporter message is
4044 displayed with a "spinning bar".
4046 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
4047 being reverted, even if the buffer has a local `revert-buffer-function'.
4049 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
4050 If delayed-warnings-list is non-nil, the command loop calls
4051 `delayed-warnings-hook' after `post-command-hook'. At present, this
4052 is only used by Emacs on some platforms to display warnings during
4053 startup, which might otherwise not be noticed. This uses the
4054 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
4056 ** rx.el has a new `group-n' construct for explicitly numbered groups.
4058 ** New function `make-composed-keymap' that constructs a new keymap
4059 from multiple input maps. You can use this to make a keymap that
4060 inherits from multiple maps, eg:
4061 (set-keymap-parent newmap (make-composed-keymap othermap parent))
4063 ** New function `string-prefix-p'.
4064 (This was actually added in Emacs 23.2 but was not advertised at the time.)
4066 ** New reader macro ## that stands for the empty symbol.
4067 This means that the empty symbol can now be read back. Also, #: by itself
4068 (when not immediately followed by a possible symbol character) stands for
4069 an empty uninterned symbol.
4071 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
4073 ** The following functions and variables are obsolete:
4075 *** `tooltip-use-echo-area' is obsolete.
4076 Rather than setting this to t, disable Tooltip mode instead.
4078 *** buffer-substring-filters is obsolete.
4079 Use `filter-buffer-substring-functions' instead.
4081 *** `byte-compile-disable-print-circle' is obsolete.
4083 *** `deferred-action-list' and `deferred-action-function' are obsolete.
4084 Use `post-command-hook' instead.
4086 *** `font-lock-maximum-size' is obsolete.
4089 * Changes in Emacs 24.1 on Non-Free Operating Systems
4091 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
4092 and also when HOME is set to C:\ by default.
4094 ** New configure.bat options
4096 *** --enable-checking builds Emacs with extra runtime checks.
4098 *** --distfiles specifies files to be included in binary distribution.
4100 *** --without-gnutls disables automatic GnuTLS detection.
4102 *** --lib for general library linkage, works with the USER_LIBS build variable.
4104 ** New make target `dist' to create binary distribution for MS Windows.
4106 ** The Lisp function `w32-default-color-map' is now obsolete.
4107 (It is only used internally in the Emacs C code.)
4109 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
4110 reappear on mouse-over. (Requires OS X 10.6 or later.)
4112 ** On Mac OS X, dragging a file into Emacs visits the file, like on
4113 other platforms, rather than inserting its contents into the buffer.
4116 ----------------------------------------------------------------------
4117 This file is part of GNU Emacs.
4119 GNU Emacs is free software: you can redistribute it and/or modify
4120 it under the terms of the GNU General Public License as published by
4121 the Free Software Foundation, either version 3 of the License, or
4122 (at your option) any later version.
4124 GNU Emacs is distributed in the hope that it will be useful,
4125 but WITHOUT ANY WARRANTY; without even the implied warranty of
4126 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4127 GNU General Public License for more details.
4129 You should have received a copy of the GNU General Public License
4130 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
4135 paragraph-separate: "[
\f]*$"