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1 GNU Emacs NEWS -- history of user-visible changes.
2
3 Copyright (C) 2010 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 ** There is a new configure option --with-crt-dir.
42 This is only useful if your crt*.o files are in a non-standard location.
43
44 ---
45 ** Emacs can be compiled against Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
46 to configure. Note that other libraries used by Emacs, RSVG and GConf,
47 also depend on Gtk+. You can disable them with --without-rsvg and
48 --without-gconf.
49
50 ** There is a new configure option --enable-use-lisp-union-type.
51 This is only useful for Emacs developers to debug certain types of bugs.
52 This is not a new feature; only the configure flag is new.
53
54 ---
55 ** New translation of the Emacs Tutorial in Hebrew is available
56 Type `C-u C-h t' to choose it in case your language setup doesn't
57 automatically select it.
58
59 \f
60 * Startup Changes in Emacs 24.1
61
62 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
63 command line arguments no longer have any effect. (They were declared
64 obsolete in Emacs 23.)
65
66 \f
67 * Changes in Emacs 24.1
68
69 ** emacsclient changes
70
71 *** New emacsclient argument --parent-id ID can be used to open a
72 client frame in parent X window ID, via XEmbed. This works like the
73 --parent-id argument to Emacs.
74
75 *** If emacsclient shuts down as a result of Emacs signalling an
76 error, its exit status is 1.
77
78 ** Completion can cycle, depending on completion-cycle-threshold.
79
80 ** auto-mode-case-fold is now enabled by default.
81
82 +++
83 ** Emacs now supports display and editing of bidirectional text.
84
85 See the node "Bidirectional Editing" in the Emacs Manual for some
86 initial documentation.
87
88 To turn this on in any given buffer, set the buffer-local variable
89 `bidi-display-reordering' to a non-nil value. The default is nil.
90
91 The buffer-local variable `bidi-paragraph-direction', if non-nil,
92 forces each paragraph in the buffer to have its base direction
93 according to the value of this variable. Possible values are
94 `right-to-left' and `left-to-right'. If the value is nil (the
95 default), Emacs determines the base direction of each paragraph from
96 its text, as specified by the Unicode Bidirectional Algorithm.
97
98 The function `current-bidi-paragraph-direction' returns the actual
99 value of paragraph base direction at point.
100
101 Reordering of bidirectional text for display in Emacs is a "Full
102 bidirectionality" class implementation of the Unicode Bidirectional
103 Algorithm.
104
105 Note that some advanced display features, such as overlay strings and
106 `display' text properties, do not yet work correctly when
107 bidirectional text is reordered for display.
108
109 ** GTK scroll-bars are now placed on the right by default.
110 Use `set-scroll-bar-mode' to change this.
111
112 ** GTK tool bars can have just text, just images or images and text.
113 Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
114 is taken from the desktop settings.
115
116 ** GTK tool bars can be placed on the left/right or top/bottom of the frame.
117 The frame-parameter tool-bar-position controls this. It takes the values
118 top, left, right or bottom. The Options => Show/Hide menu has entries
119 for this.
120
121 ** ImageMagick support.
122 It is now possible to use the ImageMagick library to load many new
123 image formats in Emacs. By default, Emacs links with the ImageMagick
124 libraries if they are present at build time. To disable this, use
125 the configure option `--without-imagemagick'.
126
127 The new function `imagemagick-types' returns a list of image file
128 extensions that your installation of ImageMagick supports. The
129 function `imagemagick-register-types' enables ImageMagick support for
130 these image types, minus those listed in `imagemagick-types-inhibit'.
131
132 See the Emacs Lisp Reference Manual for more information.
133
134 ** The colors for selected text (the region face) are taken from the GTK
135 theme when Emacs is built with GTK.
136
137 ** Emacs uses GTK tooltips by default if built with GTK. You can turn that
138 off by customizing x-gtk-use-system-tooltips.
139
140 ** Lucid menus and dialogs can display antialiased fonts if Emacs is built
141 with Xft. To change font, use X resource faceName, for example:
142 Emacs.pane.menubar.faceName: Courier-12
143 Set faceName to none and use font to use the old X fonts.
144
145 ** On graphical displays, the mode-line no longer ends in dashes.
146
147 ** Basic SELinux support has been added.
148 This requires Emacs to be linked with libselinux at build time.
149
150 *** Emacs preserves the SELinux file context when backing up, and
151 optionally when copying files. To this end, copy-file has an extra
152 optional argument, and backup-buffer and friends include the SELinux
153 context in their return values.
154
155 *** The new functions file-selinux-context and set-file-selinux-context
156 get and set the SELinux context of a file.
157
158 *** Tramp offers handlers for file-selinux-context and set-file-selinux-context
159 for remote machines which support SELinux.
160
161 ** The function kill-emacs is now run upon receipt of the signals SIGTERM
162 and SIGHUP, and upon SIGINT in batch mode.
163
164 ** kill-emacs-hook is now also run in batch mode.
165
166 ** New scrolling commands `scroll-up-command' and `scroll-down-command'
167 (bound to C-v/[next] and M-v/[prior]) does not signal errors at top/bottom
168 of buffer at first key-press (instead moves to top/bottom of buffer)
169 when a new variable `scroll-error-top-bottom' is non-nil.
170
171 ** New scrolling commands `scroll-up-line' and `scroll-down-line'
172 scroll a line instead of full screen.
173
174 ** New property `scroll-command' should be set on a command's symbol to
175 define it as a scroll command affected by `scroll-preserve-screen-position'.
176
177 ** Trash changes
178
179 *** `delete-by-moving-to-trash' now only affects commands that specify
180 trashing. This avoids inadvertently trashing temporary files.
181
182 *** Calling `delete-file' or `delete-directory' with a prefix argument
183 now forces true deletion, regardless of `delete-by-moving-to-trash'.
184
185 ** New option `list-colors-sort' defines the color sort order
186 for `list-colors-display'.
187
188 ** An Emacs Lisp package manager is now included.
189 This is a convenient way to download and install additional packages,
190 from elpa.gnu.org.
191
192 *** `M-x list-packages' shows a list of packages, which can be
193 selected for installation.
194
195 *** New command `describe-package', bound to `C-h P'.
196
197 *** By default, all installed packages are loaded and activated
198 automatically when Emacs starts up. To disable this, set
199 `package-enable-at-startup' to nil. To change which packages are
200 loaded, customize `package-load-list'.
201
202 ** Custom Themes
203
204 *** `M-x customize-themes' lists Custom themes which can be enabled.
205
206 *** New option `custom-theme-load-path' is the load path for themes.
207 Emacs no longer looks for custom themes in `load-path'. The default
208 is to search in `custom-theme-directory', followed by a built-in theme
209 directory named "themes/" in `data-directory'.
210
211 ** The user option `remote-file-name-inhibit-cache' controls whether
212 the remote file-name cache is used for read access.
213
214 ** The standalone programs lib-src/digest-doc and sorted-doc have been
215 replaced with Lisp commands `doc-file-to-man' and `doc-file-to-info'.
216
217 \f
218 * Editing Changes in Emacs 24.1
219
220 ** completion-at-point is now an alias for complete-symbol.
221
222 ** Deletion changes
223
224 *** New option `delete-active-region'.
225 If non-nil, C-d, [delete], and DEL delete the region if it is active
226 and no prefix argument is given. If set to `kill', these commands
227 kill instead.
228
229 *** New command `delete-forward-char', bound to C-d and [delete].
230 This is meant for interactive use, and obeys `delete-active-region';
231 delete-char, meant for Lisp, does not obey `delete-active-region'.
232
233 *** `delete-backward-char' is now a Lisp function.
234 Apart from obeying `delete-active-region', its behavior is unchanged.
235 However, the byte compiler now warns if it is called from Lisp; you
236 should use delete-char with a negative argument instead.
237
238 *** The option `mouse-region-delete-keys' has been deleted.
239
240 ** Selection changes.
241
242 The default handling of clipboard and primary selections has been
243 changed to conform with other X applications.
244
245 The new behavior is that by default Emacs does not put selected text
246 into the clipboard, and does not add it to kill-ring, merely because
247 the text was selected. Only commands that kill text or copy it to the
248 kill-ring (C-w, M-w, C-k, etc.) put the killed text into the
249 clipboard. Selected text is put into the primary selection (on
250 systems, such as X, that support the primary selection separately from
251 the clipboard).
252
253 Similarly, Emacs by default does not retrieve text from the clipboard
254 when the mouse (e.g., mouse-2) is used for pasting text selected in
255 another application. Mouse commands that paste text retrieve text
256 from the primary selection, on systems that support it separately from
257 the clipboard. Text from the clipboard is retrieved only by C-y, M-y
258 and other commands that yank text from the kill-ring.
259
260 In other words, the default behavior is that mouse gestures that
261 select and paste text work with the primary selection (on X), while
262 keyboard commands that kill/copy and paste text work with the
263 clipboard.
264
265 This change also means that the "Copy", "Cut", and "Paste" items of
266 the menu-bar "Edit" menu are now exactly equivalent to, respectively
267 M-w, C-w, and C-y.
268
269 To get back the previous behavior, whereby mouse gestures set the
270 clipboard and retrieve text from there, customize the variables
271 `mouse-drag-copy-region' and (on X only) `x-select-enable-primary' to
272 non-nil values. If you don't want Emacs to put the text into the
273 clipboard, only to the primary selection, additionally customize
274 `x-select-enable-clipboard' to nil.
275
276 These changes in the default behavior are reflected in the default
277 values of several variables:
278
279 *** `select-active-regions' now defaults to t, so active regions set
280 the primary selection. It was nil in previous versions.
281
282 It also accepts a new value, `only', which means to only set the
283 primary selection for temporarily active regions (usually made by
284 mouse-dragging or shift-selection).
285
286 *** `mouse-2' is now bound to `mouse-yank-primary'.
287 Previously, it was bound to `mouse-yank-at-click' (which is now
288 unbound by default).
289
290 *** `x-select-enable-clipboard' now defaults to t on all platforms.
291 Thus, killing and yanking now use the clipboard (in addition to the
292 kill ring). Note that this variable was already non-nil by default on
293 MS-Windows, which does not support the primary selection between
294 applications.
295
296 *** `x-select-enable-primary' now defaults to nil.
297 This variable exists only on X; its default value was t in previous
298 versions.
299
300 *** `mouse-drag-copy-region' now defaults to nil.
301 Its previous default value was t.
302
303 *** Support for X cut buffers has been removed.
304
305 \f
306 * Changes in Specialized Modes and Packages in Emacs 24.1
307
308 ** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
309
310 ** FIXME: xdg-open for browse-url and reportbug, 2010/08.
311
312 ** Archive Mode has basic support to browse 7z archives.
313
314 ** ERC changes
315
316 *** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
317 If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
318 successful NickServ identification, or after `erc-autojoin-delay'
319 seconds. The default value, 'ident, means to autojoin immediately
320 after connecting.
321
322 ** In ido-mode, C-v is no longer bound to ido-toggle-vc.
323 The reason is that this interferes with cua-mode.
324
325 ** partial-completion-mode is now obsolete.
326 You can get a comparable behavior with:
327 (setq completion-styles '(partial-completion initials))
328 (setq completion-pcm-complete-word-inserts-delimiters t)
329
330 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
331
332 ** Calendar, Diary, and Appt
333
334 ---
335 *** The obsolete (since Emacs 22.1) method of enabling the appt package
336 by adding appt-make-list to diary-hook has been removed. Use appt-activate.
337
338 ---
339 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
340 appt-issue-message (use the function appt-activate)
341 appt-visible/appt-msg-window (use the variable appt-display-format)
342
343 ---
344 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
345 view-diary-entries, list-diary-entries, show-all-diary-entries
346
347 ** Customize
348
349 *** Customize buffers now contain a search field.
350 The search is performed using `customize-apropos'.
351 To turn off the search field, set custom-search-field to nil .
352
353 *** Custom options now start out hidden if at their default values.
354 Use the arrow to the left of the option name to toggle visibility.
355
356 *** custom-buffer-sort-alphabetically now defaults to t.
357
358 *** The color widget now has a "Choose" button, which allows you to
359 choose a color via list-colors-display.
360
361 ** Dired-x
362
363 *** dired-jump and dired-jump-other-window called with a prefix argument
364 read a file name from the minibuffer instead of using buffer-file-name.
365
366 ** VC and related modes
367
368 *** New VC commands: vc-log-incoming, vc-log-outgoing, vc-find-conflicted-file.
369
370 **** vc-log-incoming for Git runs "git fetch" so that the necessary
371 data is available locally.
372
373 **** vc-log-incoming and vc-log-outgoing for Git require version 1.7 (or newer).
374
375 *** New key bindings: C-x v I and C-x v O bound to vc-log-incoming and
376 vc-log-outgoing, respectively.
377
378 *** The 'g' key in VC diff, log, log-incoming and log-outgoing buffers
379 reruns the corresponding VC command to compute an up to date version
380 of the buffer.
381
382 *** vc-dir for Bzr supports viewing shelve contents and shelving snapshots.
383
384 *** Special markup can be added to log-edit buffers.
385 The log-edit buffers are expected to have a format similar to email messages
386 with headers of the form:
387 Author: <author of this change>
388 Summary: <one line summary of this change>
389 Fixes: <reference to the bug fixed by this change>
390 Some backends handle some of those headers specially, but any unknown header
391 is just left as is in the message, so it is not lost.
392
393 **** vc-git handles Author: and Date:
394 **** vc-hg handles Author: and Date:
395 **** vc-bzr handles Author:, Date: and Fixes:
396 **** vc-mtn handles Author: and Date:
397
398 *** Pressing g in a *vc-diff* buffer reruns vc-diff, so it will
399 produce an up to date diff.
400
401 ** Directory local variables can apply to file-less buffers.
402 For example, adding "(diff-mode . ((mode . whitespace)))" to your
403 .dir-locals.el file, will turn on `whitespace-mode' for *vc-diff* buffers.
404
405 ** SQL Mode enhancements.
406
407 *** Several variables have been marked as safe local variables. The
408 variables `sql-product', `sql-user', `sql-server', `sql-database' and
409 `sql-port' can now be safely used as local variables.
410
411 *** `sql-dialect' is a synonym for `sql-product'.
412
413 *** Added ability to login with a port on MySQL and Postgres.
414 The custom variable `sql-port' can be specified for connection to
415 MySQL or Postgres servers. By default, the port is not listed in
416 either login parameter, but will be added to the command line if set
417 to a non-zero value.
418
419 *** Dynamic selection of product in an SQL interactive session.
420 If you use `sql-product-interactive' to start an SQL interactive
421 session it uses the current value of `sql-product'. Preceding the
422 invocation with C-u will force it to ask for the product before
423 creating the session.
424
425 *** Renaming a SQL interactive buffer when it is created.
426 Prefixing the SQL interactive commands (`sql-sqlite', `sql-postgres',
427 `sql-mysql', etc.) with C-u will force a new interactive session to be
428 started and will prompt for the new name. This will reduce the need
429 for `sql-rename-buffer' is most common use cases.
430
431 *** Command continuation prompts in SQL interactive mode are suppressed.
432 Multiple line commands in SQL interactive mode, generate command
433 continuation prompts which needlessly confuse the output. These
434 prompts are now filtered out from the output. This change impacts
435 multiple line SQL statements entered with C-j between each line,
436 statements yanked into the buffer and statements sent with
437 `sql-send-*' functions.
438
439 *** Custom variables control prompting for login parameters.
440 Each supported product has a custom variable `sql-*-login-params'
441 which is a list of the parameters to be prompted for before a
442 connection is established.
443
444 The lists consist of the following five tokens: `user', `password',
445 `database', `server', and `port'. The order in which they appear is
446 the order in which they are prompted. The tokens symbols can be
447 replaced by a sublist starting with the token and followed by a plist
448 which control the prompting for values. The tokens `user',
449 `database', and `server' each can take a property of :default which
450 specifies the value to be used if no value is entered. The
451 `database', `server', and `port' tokens handle the :completion
452 property which restricts the entry to either one of the values in the
453 list or to one of the values returned by the function provided as the
454 property value. The `database' and `server' tokens also accept the
455 :file property whose value is a regexp to identify useful file names.
456
457 (user :default DEF)
458 (database :default DEF
459 :file FILEPAT
460 :completion COMPLETE)
461 (server :default DEF
462 :file FILEPAT
463 :completion COMPLETE)
464
465 The FILEPAT when :file is specified is a regexp that will match valid
466 file names (without the directory portion). Generally these strings
467 will be of the form ".+\.SUF" where SUF is the desired file suffix.
468
469 When :completion is specified, the COMPLETE corresponds to the
470 PREDICATE argument to the `completing-read' function (a list of
471 possible values or a function returning such a list).
472
473 *** Added `sql-connection-alist' to record login parameter values.
474 An alist for recording different username, database and server
475 values. If there are multiple databases that you connect to the
476 parameters needed can be stored in this alist.
477
478 For example, the following might be set in the user's init.el:
479
480 (setq sql-connection-alist
481 '((dev (sql-product 'sqlite)
482 (sql-database "/home/mmaug/dev.db"))
483 (prd (sql-product 'oracle)
484 (sql-user "mmaug")
485 (sql-database "iprd2a"))))
486
487 This defines two connections named "dev" and "prd".
488
489 *** Added `sql-connect' to use predefined connections.
490 Sets the login parameters based on the values in the
491 `sql-connection-alist' and start a SQL interactive session. Any
492 values specified in the connection will not be prompted for.
493
494 In the example above, if the user were to invoke M-x sql-connect, they
495 would be prompted for the connection. The user can respond with
496 either "dev" or "prd". The "dev" connection would connect to the
497 SQLite database without prompting; the "prd" connection would prompt
498 for the users password and then connect to the Oracle database.
499
500 **** Added SQL->Start... submenu when connections are defined.
501 When connections have been defined, there is a submenu available that
502 allows the user to select one to start a SQLi session. The "Start
503 SQLi Session" item moves to the "Start..." submenu when cnnections
504 have been defined.
505
506 **** Added "Save Connection" menu item in SQLi buffers.
507 When a SQLi session is not started by a connection then
508 `sql-save-connection' will gather the login params specified for the
509 session and save them as a new connection.
510
511 *** List database objects and details.
512 Once a SQL interactive session has been started, you can get a list of
513 the objects in the database and see details of those objects. The
514 objects shown and the details available are product specific.
515
516 **** List all objects.
517 Using `M-x sql-list-all', `C-c C-l a' or selecting "SQL->List all
518 objects" will list all the objects in the database. At a minimum it
519 lists the tables and views in the database. Preceeding the command by
520 universal argument may provide additional details or extend the
521 listing to include other schemas objects. The list will appear in a
522 separate window in view-mode.
523
524 **** List Table details.
525 Using `M-x sql-list-table', `C-c C-l t' or selecting "SQL->List Table
526 details" will ask for the name of a database table or view and display
527 the list of columns in the relation. Preceeding the comand with the
528 universal argument may provide additional details about each column.
529 The list will appear in a separate window in view-mode.
530
531 *** Added option `sql-send-terminator'.
532 When set makes sure that each command sent with `sql-send-*' commands
533 are properly terminated and submitted to the SQL processor.
534
535 *** Added option `sql-oracle-scan-on'.
536 When set commands sent to Oracle's SQL*Plus are scanned for strings
537 starting with an ampersand and the user is asked for replacement text.
538 In general, the SQL*Plus option SCAN should always be set OFF under
539 SQL interactive mode and this option used in its place.
540
541 *** SQL interactive mode will replace tabs with spaces.
542 This prevents the comand interpretter for MySQL and Postgres from
543 listing object name completions when being sent text via
544 `sql-send-*' functions.
545
546 *** An API for manipulating SQL product definitions has been added.
547
548 ** s-region.el is now declared obsolete, superceded by shift-select-mode
549 enabled by default in 23.1.
550
551 ** gdb-mi
552
553 *** GDB User Interface migrated to GDB Machine Interface and now
554 supports multithread non-stop debugging and debugging of several
555 threads simultaneously.
556
557 ** D-Bus
558
559 *** It is possible now, to access alternative buses than the default
560 system or session bus.
561
562 ** Tramp
563
564 *** The following access methods are discontinued: "ssh1_old",
565 "ssh2_old", "scp1_old", "scp2_old" and "fish".
566
567 \f
568 * New Modes and Packages in Emacs 24.1
569
570 ** New global minor modes electric-pair-mode and electric-indent-mode.
571
572 ** pcase.el provides the ML-style pattern matching macro `pcase'.
573
574 ** smie.el is a package providing a simple generic indentation engine.
575
576 ** secrets.el is an implementation of the Secret Service API, an
577 interface to password managers like GNOME Keyring or KDE Wallet. The
578 Secret Service API requires D-Bus for communication. The command
579 `secrets-show-secrets' offers a buffer with a visualization of the
580 secrets.
581
582 ** notifications.el provides an implementation of the Desktop
583 Notifications API. It requires D-Bus for communication.
584
585 \f
586 * Incompatible Lisp Changes in Emacs 24.1
587
588 ** A backquote not followed by a space is now always treated as new-style.
589
590 ** Test for special mode-class was moved from view-file to view-buffer.
591 FIXME: This only says what was changed, but not what are the
592 programmer-visible consequences.
593
594 ** Passing a nil argument to a minor mode function now turns the mode
595 ON unconditionally.
596
597 ** During startup, Emacs no longer adds entries for `menu-bar-lines'
598 and `tool-bar-lines' to `default-frame-alist' and
599 `initial-frame-alist'. With these alist entries omitted, `make-frame'
600 checks the value of the variable `menu-bar-mode'/`tool-bar-mode' to
601 determine whether to create a menu-bar or tool-bar, respectively.
602 If the alist entries are added, they override the value of
603 `menu-bar-mode'/`tool-bar-mode'.
604
605 ** Regions created by mouse dragging are now normal active regions,
606 similar to the ones created by shift-selection. In previous Emacs
607 versions, these regions were delineated by `mouse-drag-overlay', which
608 has now been removed.
609
610 ** cl.el no longer provides `cl-19'.
611
612 ** The following functions and aliases, obsolete since at least Emacs 21.1,
613 have been removed:
614 comint-kill-output, decompose-composite-char, outline-visible,
615 internal-find-face, internal-get-face, frame-update-faces,
616 frame-update-face-colors, x-frob-font-weight, x-frob-font-slant,
617 x-make-font-bold, x-make-font-demibold, x-make-font-unbold
618 x-make-font-italic, x-make-font-oblique, x-make-font-unitalic
619 x-make-font-bold-italic, mldrag-drag-mode-line, mldrag-drag-vertical-line,
620 iswitchb-default-keybindings, char-bytes, isearch-return-char,
621 make-local-hook
622
623 ** The following variables and aliases, obsolete since at least Emacs 21.1,
624 have been removed:
625 checkdoc-minor-keymap, vc-header-alist, directory-sep-char,
626 font-lock-defaults-alist
627
628 ** The following files, obsolete since at least Emacs 21.1, have been removed:
629 sc.el, x-menu.el, rnews.el, rnewspost.el
630
631 \f
632 * Lisp changes in Emacs 24.1
633
634 ** `image-library-alist' is renamed to `dynamic-library-alist'.
635 The variable is now used to load all kind of supported dynamic libraries,
636 not just image libraries. The previous name is still available as an
637 obsolete alias.
638
639 ** New variable syntax-propertize-function to set syntax-table properties.
640 Replaces font-lock-syntactic-keywords which are now obsolete.
641 This allows syntax-table properties to be set independently from font-lock:
642 just call syntax-propertize to make sure the text is propertized.
643 Together with this new variable come a new hook
644 syntax-propertize-extend-region-functions, as well as two helper functions:
645 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
646 as-is; and syntax-propertize-rules which provides a new way to specify
647 syntactic rules.
648
649 ** New hook post-self-insert-hook run at the end of self-insert-command.
650
651 +++
652 ** Syntax tables support a new "comment style c" additionally to style b.
653 ** frame-local variables cannot be let-bound any more.
654 ** prog-mode is a new major-mode meant to be the parent of programming mode.
655 ** define-minor-mode accepts a new keyword :variable.
656
657 ** `delete-file' and `delete-directory' now accept optional arg TRASH.
658 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
659 both non-nil. Interactively, TRASH defaults to t, unless a prefix
660 argument is supplied (see Trash changes, above).
661
662 ** buffer-substring-filters is obsoleted by filter-buffer-substring-functions.
663
664 ** New completion style `substring'.
665
666 ** Image API
667
668 *** When the image type is one of listed in `image-animated-types'
669 and the number of sub-images in the image is more than one, then the
670 new function `create-animated-image' creates an animated image where
671 sub-images are displayed successively with the duration defined by
672 `image-animate-max-time' and the delay between sub-images defined
673 by the Graphic Control Extension of the image.
674
675 *** `image-extension-data' is renamed to `image-metadata'.
676
677 ** XML and HTML parsing
678
679 *** If Emacs is compiled with libxml2 support (which is the default),
680 two new Emacs Lisp-level functions are defined:
681 `xml-parse-html-string-internal' (which will parse "real world" HTML)
682 and `xml-parse-string-internal' (which parses XML). Both return an
683 Emacs Lisp parse tree.
684
685 FIXME: These should be front-ended by xml.el.
686
687 ** FIXME GnuTLS
688
689 ** Isearch
690
691 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
692
693 ** Progress reporters can now "spin".
694 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
695 now be nil, or omitted. This makes a "non-numeric" reporter. Each
696 time you call `progress-reporter-update' on that progress reporter,
697 with a nil or omitted VALUE argument, the reporter message is
698 displayed with a "spinning bar".
699
700 \f
701 * Changes in Emacs 24.1 on non-free operating systems
702
703 ** New configure.bat option --enable-checking builds emacs with extra
704 runtime checks.
705
706 ** New configure.bat option --distfiles to specify files to be
707 included in binary distribution
708
709 ** New make target `dist' to create binary disttribution for Windows
710 platform
711
712 \f
713 ----------------------------------------------------------------------
714 This file is part of GNU Emacs.
715
716 GNU Emacs is free software: you can redistribute it and/or modify
717 it under the terms of the GNU General Public License as published by
718 the Free Software Foundation, either version 3 of the License, or
719 (at your option) any later version.
720
721 GNU Emacs is distributed in the hope that it will be useful,
722 but WITHOUT ANY WARRANTY; without even the implied warranty of
723 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
724 GNU General Public License for more details.
725
726 You should have received a copy of the GNU General Public License
727 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
728
729 \f
730 Local variables:
731 mode: outline
732 paragraph-separate: "[ \f]*$"
733 end: