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1 GNU Emacs NEWS -- history of user-visible changes.
2
3 Copyright (C) 2010, 2011 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
5
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
8
9 This file is about changes in Emacs version 24.
10
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.
13
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.
16
17
18 Temporary note:
19 +++ indicates that the appropriate manual has already been updated.
20 --- means no change in the manuals is called for.
21 When you add a new item, please add it without either +++ or ---
22 so we will look at it and add it to the manual.
23
24 \f
25 * Installation Changes in Emacs 24.1
26
27 ** Configure links against libselinux if it is found.
28 You can disable this by using --without-selinux.
29
30 ---
31 ** By default, the installed Info and man pages are compressed.
32 You can disable this by configuring --without-compress-info.
33
34 ---
35 ** There are new configure options:
36 --with-mmdf, --with-mail-unlink, --with-mailhost.
37 These provide no new functionality, they just remove the need to edit
38 lib-src/Makefile by hand in order to use the associated features.
39
40 ---
41 ** Emacs can be compiled against Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
42 to configure. Note that other libraries used by Emacs, RSVG and GConf,
43 also depend on Gtk+. You can disable them with --without-rsvg and
44 --without-gconf.
45
46 ** There is a new configure option --enable-use-lisp-union-type.
47 This is only useful for Emacs developers to debug certain types of bugs.
48 This is not a new feature; only the configure flag is new.
49
50 ---
51 ** New translation of the Emacs Tutorial in Hebrew is available
52 Type `C-u C-h t' to choose it in case your language setup doesn't
53 automatically select it.
54
55 \f
56 * Startup Changes in Emacs 24.1
57
58 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
59 command line arguments, and the EMACS_UNIBYTE environment variable, no
60 longer have any effect. (They were declared obsolete in Emacs 23.)
61
62 ** New command line option `--no-site-lisp' removes site-lisp directories
63 from load-path. -Q now implies this.
64
65 \f
66 * Changes in Emacs 24.1
67
68 ** emacsclient changes
69
70 *** New emacsclient argument --parent-id ID can be used to open a
71 client frame in parent X window ID, via XEmbed. This works like the
72 --parent-id argument to Emacs.
73
74 *** If emacsclient shuts down as a result of Emacs signalling an
75 error, its exit status is 1.
76
77 ** Completion can cycle, depending on completion-cycle-threshold.
78
79 ** auto-mode-case-fold is now enabled by default.
80
81 +++
82 ** Emacs now supports display and editing of bidirectional text.
83
84 See the node "Bidirectional Editing" in the Emacs Manual for some
85 initial documentation.
86
87 To turn this on in any given buffer, set the buffer-local variable
88 `bidi-display-reordering' to a non-nil value. The default is nil.
89
90 The buffer-local variable `bidi-paragraph-direction', if non-nil,
91 forces each paragraph in the buffer to have its base direction
92 according to the value of this variable. Possible values are
93 `right-to-left' and `left-to-right'. If the value is nil (the
94 default), Emacs determines the base direction of each paragraph from
95 its text, as specified by the Unicode Bidirectional Algorithm.
96
97 The function `current-bidi-paragraph-direction' returns the actual
98 value of paragraph base direction at point.
99
100 Reordering of bidirectional text for display in Emacs is a "Full
101 bidirectionality" class implementation of the Unicode Bidirectional
102 Algorithm.
103
104 Note that some advanced display features, such as overlay strings and
105 `display' text properties, do not yet work correctly when
106 bidirectional text is reordered for display.
107
108 ** GTK scroll-bars are now placed on the right by default.
109 Use `set-scroll-bar-mode' to change this.
110
111 ** GTK tool bars can have just text, just images or images and text.
112 Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
113 is taken from the desktop settings.
114
115 ** GTK tool bars can be placed on the left/right or top/bottom of the frame.
116 The frame-parameter tool-bar-position controls this. It takes the values
117 top, left, right or bottom. The Options => Show/Hide menu has entries
118 for this.
119
120 ** ImageMagick support.
121 It is now possible to use the ImageMagick library to load many new
122 image formats in Emacs. By default, Emacs links with the ImageMagick
123 libraries if they are present at build time. To disable this, use
124 the configure option `--without-imagemagick'.
125
126 The new function `imagemagick-types' returns a list of image file
127 extensions that your installation of ImageMagick supports. The
128 function `imagemagick-register-types' enables ImageMagick support for
129 these image types, minus those listed in `imagemagick-types-inhibit'.
130
131 See the Emacs Lisp Reference Manual for more information.
132
133 ** The colors for selected text (the region face) are taken from the GTK
134 theme when Emacs is built with GTK.
135
136 ** Emacs uses GTK tooltips by default if built with GTK. You can turn that
137 off by customizing x-gtk-use-system-tooltips.
138
139 ** Lucid menus and dialogs can display antialiased fonts if Emacs is built
140 with Xft. To change font, use X resource faceName, for example:
141 Emacs.pane.menubar.faceName: Courier-12
142 Set faceName to none and use font to use the old X fonts.
143
144 +++
145 ** Enhanced support for characters that have no glyphs in available fonts
146 If a character has no glyphs in any of the available fonts, Emacs by
147 default will display it either as a hexadecimal code in a box or as a
148 thin 1-pixel space. In addition to these two methods, Emacs can
149 display these characters as empty box, as an acronym, or not display
150 them at all. To change how these characters are displayed, customize
151 the variable `glyphless-char-display-control'.
152
153 On character terminals these methods are used for characters that
154 cannot be encoded by the `terminal-coding-system'.
155
156 ** On graphical displays, the mode-line no longer ends in dashes.
157
158 ** Basic SELinux support has been added.
159 This requires Emacs to be linked with libselinux at build time.
160
161 *** Emacs preserves the SELinux file context when backing up, and
162 optionally when copying files. To this end, copy-file has an extra
163 optional argument, and backup-buffer and friends include the SELinux
164 context in their return values.
165
166 *** The new functions file-selinux-context and set-file-selinux-context
167 get and set the SELinux context of a file.
168
169 *** Tramp offers handlers for file-selinux-context and set-file-selinux-context
170 for remote machines which support SELinux.
171
172 ** The function kill-emacs is now run upon receipt of the signals SIGTERM
173 and SIGHUP, and upon SIGINT in batch mode.
174
175 ** kill-emacs-hook is now also run in batch mode.
176
177 ** New scrolling commands `scroll-up-command' and `scroll-down-command'
178 (bound to C-v/[next] and M-v/[prior]) does not signal errors at top/bottom
179 of buffer at first key-press (instead moves to top/bottom of buffer)
180 when a new variable `scroll-error-top-bottom' is non-nil.
181
182 ** New scrolling commands `scroll-up-line' and `scroll-down-line'
183 scroll a line instead of full screen.
184
185 ** New property `scroll-command' should be set on a command's symbol to
186 define it as a scroll command affected by `scroll-preserve-screen-position'.
187
188 ** Trash changes
189
190 *** `delete-by-moving-to-trash' now only affects commands that specify
191 trashing. This avoids inadvertently trashing temporary files.
192
193 *** Calling `delete-file' or `delete-directory' with a prefix argument
194 now forces true deletion, regardless of `delete-by-moving-to-trash'.
195
196 ** New option `list-colors-sort' defines the color sort order
197 for `list-colors-display'.
198
199 ** An Emacs Lisp package manager is now included.
200 This is a convenient way to download and install additional packages,
201 from a package repository at elpa.gnu.org.
202
203 *** `M-x list-packages' shows a list of packages, which can be
204 selected for installation.
205
206 *** New command `describe-package', bound to `C-h P'.
207
208 *** By default, all installed packages are loaded and activated
209 automatically when Emacs starts up. To disable this, set
210 `package-enable-at-startup' to nil. To change which packages are
211 loaded, customize `package-load-list'.
212
213 ** Custom Themes
214
215 *** `M-x customize-themes' lists Custom themes which can be enabled.
216
217 *** New option `custom-theme-load-path' is the load path for themes.
218 Emacs no longer looks for custom themes in `load-path'. The default
219 is to search in `custom-theme-directory', followed by a built-in theme
220 directory named "themes/" in `data-directory'.
221
222 *** New option `custom-safe-themes' records known-safe theme files.
223 If a theme is not in this list, Emacs queries before loading it, and
224 offers to save the theme to `custom-safe-themes' automatically. By
225 default, all themes included in Emacs are treated as safe.
226
227 ** The user option `remote-file-name-inhibit-cache' controls whether
228 the remote file-name cache is used for read access.
229
230 ** The standalone programs lib-src/digest-doc and sorted-doc have been
231 replaced with Lisp commands `doc-file-to-man' and `doc-file-to-info'.
232
233 ** The variable `focus-follows-mouse' now always defaults to nil.
234
235 \f
236 * Editing Changes in Emacs 24.1
237
238 +++
239 ** There is a new command `count-words-region', which does what you expect.
240
241 ** completion-at-point now handles tags and semantic completion.
242
243 ** The default value of `backup-by-copying-when-mismatch' is now t.
244
245 ** The command `just-one-space' (C-SPC), if given a negative argument,
246 also deletes newlines around point.
247
248 ** Deletion changes
249
250 *** New option `delete-active-region'.
251 If non-nil, C-d, [delete], and DEL delete the region if it is active
252 and no prefix argument is given. If set to `kill', these commands
253 kill instead.
254
255 *** New command `delete-forward-char', bound to C-d and [delete].
256 This is meant for interactive use, and obeys `delete-active-region'.
257 The command `delete-char' does not obey `delete-active-region'.
258
259 *** `delete-backward-char' is now a Lisp function.
260 Apart from obeying `delete-active-region', its behavior is unchanged.
261 However, the byte compiler now warns if it is called from Lisp; you
262 should use delete-char with a negative argument instead.
263
264 *** The option `mouse-region-delete-keys' has been deleted.
265
266 ** Selection changes.
267
268 The default handling of clipboard and primary selections has been
269 changed to conform with other X applications. The exact changes are
270 described below; in short, mouse commands to select and paste text now
271 use the primary selection, while all other commands for killing and
272 yanking text now use the clipboard.
273
274 *** Merely selecting text (e.g. with drag-mouse-1) does not add it to
275 the kill-ring. On systems with a primary selection separate from the
276 clipboard (such as X), the selected text is put in the primary
277 selection.
278
279 *** mouse-2 is now bound to `mouse-yank-primary', which pastes from
280 the primary selection regardless of the contents of the kill-ring.
281
282 *** Commands that kill text or copy it to the kill-ring (M-w, C-w,
283 C-k, etc.) also put the killed text into the clipboard. This change
284 also means that the "Copy", "Cut", and "Paste" items in the "Edit"
285 menu are now exactly equivalent to, respectively M-w, C-w, and C-y.
286
287 *** Yank commands, such as C-y and M-y, retrieve text from the
288 clipboard if it is available.
289
290 *** The above changes are reflected in the following new defaults:
291
292 **** `select-active-regions' now defaults to t.
293 It also accepts a new value, `only', which means to only set the
294 primary selection for temporarily active regions (usually made by
295 mouse-dragging or shift-selection).
296
297 **** `mouse-2' is now bound to `mouse-yank-primary'.
298 Previously, it was bound to `mouse-yank-at-click' (which is now
299 unbound by default).
300
301 **** `x-select-enable-clipboard' now defaults to t on all platforms.
302 Note that this variable was already non-nil by default on MS-Windows,
303 which does not support the primary selection between applications.
304
305 **** `x-select-enable-primary' now defaults to nil.
306 This variable exists only on X; its default value was t in previous
307 versions.
308
309 **** `mouse-drag-copy-region' now defaults to nil.
310
311 *** To return to the previous behavior, where mouse commands use the
312 clipboard, change `mouse-drag-copy-region' and (on X only)
313 `x-select-enable-primary' to t. If you don't want Emacs to put the
314 text into the clipboard, only to the primary selection, additionally
315 set `x-select-enable-clipboard' to nil.
316
317 *** Support for X cut buffers has been removed.
318
319 ** New command `rectangle-number-lines', bound to `C-x r N', numbers
320 the lines in the current rectangle. With an prefix argument, this
321 prompts for a number to count from and for a format string.
322
323 \f
324 * Changes in Specialized Modes and Packages in Emacs 24.1
325
326 ** shell-mode can track your cwd by reading it from your prompt.
327 Just set shell-dir-cookie-re to an appropriate regexp.
328
329 ** Modula-2 mode provides auto-indentation.
330
331 ** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
332
333 ** FIXME: xdg-open for browse-url and reportbug, 2010/08.
334
335 ** Archive Mode has basic support to browse 7z archives.
336
337 ** browse-url has gotten a new variable that is used for mailto: URLs,
338 `browse-url-mailto-function', which defaults to `browse-url-mail'.
339
340 ** ERC changes
341
342 *** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
343 If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
344 successful NickServ identification, or after `erc-autojoin-delay'
345 seconds. The default value, 'ident, means to autojoin immediately
346 after connecting.
347
348 *** New variable `erc-coding-system-precedence': If we use `undecided'
349 as the server coding system, this variable will then be consulted.
350 The default is to decode strings that can be decoded as utf-8 as
351 utf-8, and do the normal `undecided' decoding for the rest.
352
353 ** Eshell changes
354
355 *** The default value of eshell-directory-name is a directory named
356 "eshell" in `user-emacs-directory'. If the old "~/.eshell/" directory
357 exists, that is used instead.
358
359 ** In ido-mode, C-v is no longer bound to ido-toggle-vc.
360 The reason is that this interferes with cua-mode.
361
362 ** partial-completion-mode is now obsolete.
363 You can get a comparable behavior with:
364 (setq completion-styles '(partial-completion initials))
365 (setq completion-pcm-complete-word-inserts-delimiters t)
366
367 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
368
369 ** server can listen on a specific port using the server-port option.
370
371 ** Calendar, Diary, and Appt
372
373 ---
374 *** The obsolete (since Emacs 22.1) method of enabling the appt package
375 by adding appt-make-list to diary-hook has been removed. Use appt-activate.
376
377 ---
378 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
379 appt-issue-message (use the function appt-activate)
380 appt-visible/appt-msg-window (use the variable appt-display-format)
381
382 ---
383 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
384 view-diary-entries, list-diary-entries, show-all-diary-entries
385
386 ** Customize
387
388 *** Customize buffers now contain a search field.
389 The search is performed using `customize-apropos'.
390 To turn off the search field, set custom-search-field to nil.
391
392 *** Custom options now start out hidden if at their default values.
393 Use the arrow to the left of the option name to toggle visibility.
394
395 *** custom-buffer-sort-alphabetically now defaults to t.
396
397 *** The color widget now has a "Choose" button, which allows you to
398 choose a color via list-colors-display.
399
400 ** Dired-x
401
402 *** dired-jump and dired-jump-other-window called with a prefix argument
403 read a file name from the minibuffer instead of using buffer-file-name.
404
405 ** Directory local variables can apply to file-less buffers.
406 For example, adding "(diff-mode . ((mode . whitespace)))" to your
407 .dir-locals.el file, will turn on `whitespace-mode' for *vc-diff* buffers.
408
409 ** SQL Mode enhancements.
410
411 *** Several variables have been marked as safe local variables. The
412 variables `sql-product', `sql-user', `sql-server', `sql-database' and
413 `sql-port' can now be safely used as local variables.
414
415 *** `sql-dialect' is a synonym for `sql-product'.
416
417 *** Added ability to login with a port on MySQL and Postgres.
418 The custom variable `sql-port' can be specified for connection to
419 MySQL or Postgres servers. By default, the port is not listed in
420 either login parameter, but will be added to the command line if set
421 to a non-zero value.
422
423 *** Dynamic selection of product in an SQL interactive session.
424 If you use `sql-product-interactive' to start an SQL interactive
425 session it uses the current value of `sql-product'. Preceding the
426 invocation with C-u will force it to ask for the product before
427 creating the session.
428
429 *** Renaming a SQL interactive buffer when it is created.
430 Prefixing the SQL interactive commands (`sql-sqlite', `sql-postgres',
431 `sql-mysql', etc.) with C-u will force a new interactive session to be
432 started and will prompt for the new name. This will reduce the need
433 for `sql-rename-buffer' is most common use cases.
434
435 *** Command continuation prompts in SQL interactive mode are suppressed.
436 Multiple line commands in SQL interactive mode, generate command
437 continuation prompts which needlessly confuse the output. These
438 prompts are now filtered out from the output. This change impacts
439 multiple line SQL statements entered with C-j between each line,
440 statements yanked into the buffer and statements sent with
441 `sql-send-*' functions.
442
443 *** Custom variables control prompting for login parameters.
444 Each supported product has a custom variable `sql-*-login-params'
445 which is a list of the parameters to be prompted for before a
446 connection is established.
447
448 The lists consist of the following five tokens: `user', `password',
449 `database', `server', and `port'. The order in which they appear is
450 the order in which they are prompted. The tokens symbols can be
451 replaced by a sublist starting with the token and followed by a plist
452 which control the prompting for values. The tokens `user',
453 `database', and `server' each can take a property of :default which
454 specifies the value to be used if no value is entered. The
455 `database', `server', and `port' tokens handle the :completion
456 property which restricts the entry to either one of the values in the
457 list or to one of the values returned by the function provided as the
458 property value. The `database' and `server' tokens also accept the
459 :file property whose value is a regexp to identify useful file names.
460
461 (user :default DEF)
462 (database :default DEF
463 :file FILEPAT
464 :completion COMPLETE)
465 (server :default DEF
466 :file FILEPAT
467 :completion COMPLETE)
468
469 The FILEPAT when :file is specified is a regexp that will match valid
470 file names (without the directory portion). Generally these strings
471 will be of the form ".+\.SUF" where SUF is the desired file suffix.
472
473 When :completion is specified, the COMPLETE corresponds to the
474 PREDICATE argument to the `completing-read' function (a list of
475 possible values or a function returning such a list).
476
477 *** Added `sql-connection-alist' to record login parameter values.
478 An alist for recording different username, database and server
479 values. If there are multiple databases that you connect to the
480 parameters needed can be stored in this alist.
481
482 For example, the following might be set in the user's init.el:
483
484 (setq sql-connection-alist
485 '((dev (sql-product 'sqlite)
486 (sql-database "/home/mmaug/dev.db"))
487 (prd (sql-product 'oracle)
488 (sql-user "mmaug")
489 (sql-database "iprd2a"))))
490
491 This defines two connections named "dev" and "prd".
492
493 *** Added `sql-connect' to use predefined connections.
494 Sets the login parameters based on the values in the
495 `sql-connection-alist' and start a SQL interactive session. Any
496 values specified in the connection will not be prompted for.
497
498 In the example above, if the user were to invoke M-x sql-connect, they
499 would be prompted for the connection. The user can respond with
500 either "dev" or "prd". The "dev" connection would connect to the
501 SQLite database without prompting; the "prd" connection would prompt
502 for the users password and then connect to the Oracle database.
503
504 **** Added SQL->Start... submenu when connections are defined.
505 When connections have been defined, there is a submenu available that
506 allows the user to select one to start a SQLi session. The "Start
507 SQLi Session" item moves to the "Start..." submenu when cnnections
508 have been defined.
509
510 **** Added "Save Connection" menu item in SQLi buffers.
511 When a SQLi session is not started by a connection then
512 `sql-save-connection' will gather the login params specified for the
513 session and save them as a new connection.
514
515 *** List database objects and details.
516 Once a SQL interactive session has been started, you can get a list of
517 the objects in the database and see details of those objects. The
518 objects shown and the details available are product specific.
519
520 **** List all objects.
521 Using `M-x sql-list-all', `C-c C-l a' or selecting "SQL->List all
522 objects" will list all the objects in the database. At a minimum it
523 lists the tables and views in the database. Preceeding the command by
524 universal argument may provide additional details or extend the
525 listing to include other schemas objects. The list will appear in a
526 separate window in view-mode.
527
528 **** List Table details.
529 Using `M-x sql-list-table', `C-c C-l t' or selecting "SQL->List Table
530 details" will ask for the name of a database table or view and display
531 the list of columns in the relation. Preceeding the comand with the
532 universal argument may provide additional details about each column.
533 The list will appear in a separate window in view-mode.
534
535 *** Added option `sql-send-terminator'.
536 When set makes sure that each command sent with `sql-send-*' commands
537 are properly terminated and submitted to the SQL processor.
538
539 *** Added option `sql-oracle-scan-on'.
540 When set commands sent to Oracle's SQL*Plus are scanned for strings
541 starting with an ampersand and the user is asked for replacement text.
542 In general, the SQL*Plus option SCAN should always be set OFF under
543 SQL interactive mode and this option used in its place.
544
545 *** SQL interactive mode will replace tabs with spaces.
546 This prevents the comand interpretter for MySQL and Postgres from
547 listing object name completions when being sent text via
548 `sql-send-*' functions.
549
550 *** An API for manipulating SQL product definitions has been added.
551
552 ** sregex.el is now obsolete, since rx.el is a strict superset.
553
554 ** s-region.el is now declared obsolete, superceded by shift-select-mode
555 enabled by default in 23.1.
556
557 ** gdb-mi
558
559 *** GDB User Interface migrated to GDB Machine Interface and now
560 supports multithread non-stop debugging and debugging of several
561 threads simultaneously.
562
563 ** D-Bus
564
565 *** It is possible now, to access alternative buses than the default
566 system or session bus.
567
568 *** dbus-register-{method,property} do not necessarily register names anymore.
569
570 ** Tramp
571
572 *** There exists a new inline access method "ksu" (kerberized su).
573
574 *** The following access methods are discontinued: "ssh1_old",
575 "ssh2_old", "scp1_old", "scp2_old" and "fish".
576
577 ** VC and related modes
578
579 *** Support for pulling on distributed version control systems.
580 The vc-update command now runs a "pull" operation, if it is supported.
581 This updates the current branch from upstream. A prefix argument
582 means to prompt the user for command specifics, e.g. a pull location.
583
584 **** vc-pull is an alias for vc-update.
585
586 **** Currently supported by Bzr.
587
588 *** Support for merging on distributed version control systems.
589 The vc-merge command now runs a "merge" operation, if it is supported.
590 This merges another branch into the current one. A prefix argument
591 means to prompt the user for command specifics, e.g. a merge location.
592
593 **** Currently supported by Bzr.
594
595 \f
596 * New Modes and Packages in Emacs 24.1
597
598 ** New global minor modes electric-pair-mode, electric-indent-mode,
599 and electric-layout-mode.
600
601 ** pcase.el provides the ML-style pattern matching macro `pcase'.
602
603 ** secrets.el is an implementation of the Secret Service API, an
604 interface to password managers like GNOME Keyring or KDE Wallet. The
605 Secret Service API requires D-Bus for communication. The command
606 `secrets-show-secrets' offers a buffer with a visualization of the
607 secrets.
608
609 ** notifications.el provides an implementation of the Desktop
610 Notifications API. It requires D-Bus for communication.
611
612 \f
613 * Incompatible Lisp Changes in Emacs 24.1
614
615 ** For mouse click input events in the text area, the Y pixel
616 coordinate in the POSITION list now counts from the top of the text
617 area, excluding any header line. Previously, it counted from the top
618 of the header line.
619
620 ** Remove obsolete name `e' (use `float-e' instead).
621
622 ** A backquote not followed by a space is now always treated as new-style.
623
624 ** Test for special mode-class was moved from view-file to view-buffer.
625 FIXME: This only says what was changed, but not what are the
626 programmer-visible consequences.
627
628 ** Passing a nil argument to a minor mode function now turns the mode
629 ON unconditionally.
630
631 ** During startup, Emacs no longer adds entries for `menu-bar-lines'
632 and `tool-bar-lines' to `default-frame-alist' and
633 `initial-frame-alist'. With these alist entries omitted, `make-frame'
634 checks the value of the variable `menu-bar-mode'/`tool-bar-mode' to
635 determine whether to create a menu-bar or tool-bar, respectively.
636 If the alist entries are added, they override the value of
637 `menu-bar-mode'/`tool-bar-mode'.
638
639 ** Regions created by mouse dragging are now normal active regions,
640 similar to the ones created by shift-selection. In previous Emacs
641 versions, these regions were delineated by `mouse-drag-overlay', which
642 has now been removed.
643
644 ** cl.el no longer provides `cl-19'.
645
646 ** The following functions and aliases, obsolete since at least Emacs 21.1,
647 have been removed:
648 comint-kill-output, decompose-composite-char, outline-visible,
649 internal-find-face, internal-get-face, frame-update-faces,
650 frame-update-face-colors, x-frob-font-weight, x-frob-font-slant,
651 x-make-font-bold, x-make-font-demibold, x-make-font-unbold
652 x-make-font-italic, x-make-font-oblique, x-make-font-unitalic
653 x-make-font-bold-italic, mldrag-drag-mode-line, mldrag-drag-vertical-line,
654 iswitchb-default-keybindings, char-bytes, isearch-return-char,
655 make-local-hook
656
657 ** The following variables and aliases, obsolete since at least Emacs 21.1,
658 have been removed:
659 checkdoc-minor-keymap, vc-header-alist, directory-sep-char,
660 font-lock-defaults-alist
661
662 ** The following files, obsolete since at least Emacs 21.1, have been removed:
663 sc.el, x-menu.el, rnews.el, rnewspost.el
664
665 ** FIXME finder-inf.el changes.
666
667 \f
668 * Lisp changes in Emacs 24.1
669
670 ** New function `read-char-choice' reads a restricted set of characters,
671 discarding any inputs not inside the set.
672
673 ** `y-or-n-p' and `yes-or-no-p' now accept format string arguments.
674
675 ** `image-library-alist' is renamed to `dynamic-library-alist'.
676 The variable is now used to load all kind of supported dynamic libraries,
677 not just image libraries. The previous name is still available as an
678 obsolete alias.
679
680 ** New variable syntax-propertize-function to set syntax-table properties.
681 Replaces font-lock-syntactic-keywords which are now obsolete.
682 This allows syntax-table properties to be set independently from font-lock:
683 just call syntax-propertize to make sure the text is propertized.
684 Together with this new variable come a new hook
685 syntax-propertize-extend-region-functions, as well as two helper functions:
686 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
687 as-is; and syntax-propertize-rules which provides a new way to specify
688 syntactic rules.
689
690 ** New hook post-self-insert-hook run at the end of self-insert-command.
691
692 +++
693 ** Syntax tables support a new "comment style c" additionally to style b.
694 ** frame-local variables cannot be let-bound any more.
695 ** prog-mode is a new major-mode meant to be the parent of programming mode.
696 ** define-minor-mode accepts a new keyword :variable.
697
698 ** `delete-file' and `delete-directory' now accept optional arg TRASH.
699 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
700 both non-nil. Interactively, TRASH defaults to t, unless a prefix
701 argument is supplied (see Trash changes, above).
702
703 ** buffer-substring-filters is obsoleted by filter-buffer-substring-functions.
704
705 ** New completion style `substring'.
706
707 ** `facemenu-read-color' is now an alias for `read-color'.
708 The command `read-color' now requires a match for a color name or RGB
709 triplet, instead of signalling an error if the user provides a invalid
710 input.
711
712 ** Tool-bars can display separators.
713 Tool-bar separators are handled like menu separators in menu-bar maps,
714 i.e. via menu entries of the form `(menu-item "--")'.
715
716 ** Image API
717
718 *** When the image type is one of listed in `image-animated-types'
719 and the number of sub-images in the image is more than one, then the
720 new function `create-animated-image' creates an animated image where
721 sub-images are displayed successively with the duration defined by
722 `image-animate-max-time' and the delay between sub-images defined
723 by the Graphic Control Extension of the image.
724
725 *** `image-extension-data' is renamed to `image-metadata'.
726
727 ** XML and HTML parsing
728
729 *** If Emacs is compiled with libxml2 support (which is the default),
730 two new Emacs Lisp-level functions are defined:
731 `libxml-parse-html-region' (which will parse "real world" HTML)
732 and `libxml-parse-xml-region' (which parses XML). Both return an
733 Emacs Lisp parse tree.
734
735 FIXME: These should be front-ended by xml.el.
736
737 ** FIXME GnuTLS
738
739 ** Isearch
740
741 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
742
743 ** Progress reporters can now "spin".
744 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
745 now be nil, or omitted. This makes a "non-numeric" reporter. Each
746 time you call `progress-reporter-update' on that progress reporter,
747 with a nil or omitted VALUE argument, the reporter message is
748 displayed with a "spinning bar".
749
750 \f
751 * Changes in Emacs 24.1 on non-free operating systems
752
753 ** New configure.bat option --enable-checking builds emacs with extra
754 runtime checks.
755
756 ** New configure.bat option --distfiles to specify files to be
757 included in binary distribution
758
759 ** New make target `dist' to create binary disttribution for Windows
760 platform
761
762 \f
763 ----------------------------------------------------------------------
764 This file is part of GNU Emacs.
765
766 GNU Emacs is free software: you can redistribute it and/or modify
767 it under the terms of the GNU General Public License as published by
768 the Free Software Foundation, either version 3 of the License, or
769 (at your option) any later version.
770
771 GNU Emacs is distributed in the hope that it will be useful,
772 but WITHOUT ANY WARRANTY; without even the implied warranty of
773 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
774 GNU General Public License for more details.
775
776 You should have received a copy of the GNU General Public License
777 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
778
779 \f
780 Local variables:
781 mode: outline
782 paragraph-separate: "[ \f]*$"
783 end: