21a83cc6fc512854fb3d2e3d19466570f7531d41
[bpt/emacs.git] / etc / NEWS
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.
142
143 ** On graphical displays, the mode-line no longer ends in dashes.
144
145 ** Basic SELinux support has been added.
146 This requires Emacs to be linked with libselinux at build time.
147
148 *** Emacs preserves the SELinux file context when backing up, and
149 optionally when copying files. To this end, copy-file has an extra
150 optional argument, and backup-buffer and friends include the SELinux
151 context in their return values.
152
153 *** The new functions file-selinux-context and set-file-selinux-context
154 get and set the SELinux context of a file.
155
156 *** Tramp offers handlers for file-selinux-context and set-file-selinux-context
157 for remote machines which support SELinux.
158
159 ** The function kill-emacs is now run upon receipt of the signals SIGTERM
160 and SIGHUP, and upon SIGINT in batch mode.
161
162 ** kill-emacs-hook is now also run in batch mode.
163
164 ** New scrolling commands `scroll-up-command' and `scroll-down-command'
165 (bound to C-v/[next] and M-v/[prior]) does not signal errors at top/bottom
166 of buffer at first key-press (instead moves to top/bottom of buffer)
167 when a new variable `scroll-error-top-bottom' is non-nil.
168
169 ** New scrolling commands `scroll-up-line' and `scroll-down-line'
170 scroll a line instead of full screen.
171
172 ** New property `scroll-command' should be set on a command's symbol to
173 define it as a scroll command affected by `scroll-preserve-screen-position'.
174
175 ** Trash changes
176
177 *** `delete-by-moving-to-trash' now only affects commands that specify
178 trashing. This avoids inadvertently trashing temporary files.
179
180 *** Calling `delete-file' or `delete-directory' with a prefix argument
181 now forces true deletion, regardless of `delete-by-moving-to-trash'.
182
183 ** New option `list-colors-sort' defines the color sort order
184 for `list-colors-display'.
185
186 ** An Emacs Lisp package manager is now included.
187 This is a convenient way to download and install additional packages,
188 from elpa.gnu.org.
189
190 *** `M-x list-packages' shows a list of packages, which can be
191 selected for installation.
192
193 *** New command `describe-package', bound to `C-h P'.
194
195 *** By default, all installed packages are loaded and activated
196 automatically when Emacs starts up. To disable this, set
197 `package-enable-at-startup' to nil. To change which packages are
198 loaded, customize `package-load-list'.
199
200 ** Custom Themes
201
202 *** `M-x customize-themes' lists Custom themes which can be enabled.
203
204 *** New option `custom-theme-load-path' is the load path for themes.
205 Emacs no longer looks for custom themes in `load-path'. The default
206 is to search in `custom-theme-directory', followed by a built-in theme
207 directory named "themes/" in `data-directory'.
208
209 ** The user option `remote-file-name-inhibit-cache' controls whether
210 the remote file-name cache is used for read access.
211
212 \f
213 * Editing Changes in Emacs 24.1
214
215 ** completion-at-point is now an alias for complete-symbol.
216
217 ** Deletion changes
218
219 *** New option `delete-active-region'.
220 If non-nil, C-d, [delete], and DEL delete the region if it is active
221 and no prefix argument is given. If set to `kill', these commands
222 kill instead.
223
224 *** New command `delete-forward-char', bound to C-d and [delete].
225 This is meant for interactive use, and obeys `delete-active-region';
226 delete-char, meant for Lisp, does not obey `delete-active-region'.
227
228 *** `delete-backward-char' is now a Lisp function.
229 Apart from obeying `delete-active-region', its behavior is unchanged.
230 However, the byte compiler now warns if it is called from Lisp; you
231 should use delete-char with a negative argument instead.
232
233 *** The option `mouse-region-delete-keys' has been deleted.
234
235 ** Selection changes.
236
237 The default handling of clipboard and primary selections has been
238 changed to conform with other X applications.
239
240 The new behavior is that by default Emacs does not put selected text
241 into the clipboard, and does not add it to kill-ring, merely because
242 the text was selected. Only commands that kill text or copy it to the
243 kill-ring (C-w, M-w, C-k, etc.) put the killed text into the
244 clipboard. Selected text is put into the primary selection (on
245 systems, such as X, that support the primary selection separately from
246 the clipboard).
247
248 Similarly, Emacs by default does not retrieve text from the clipboard
249 when the mouse (e.g., mouse-2) is used for pasting text selected in
250 another application. Mouse commands that paste text retrieve text
251 from the primary selection, on systems that support it separately from
252 the clipboard. Text from the clipboard is retrieved only by C-y, M-y
253 and other commands that yank text from the kill-ring.
254
255 In other words, the default behavior is that mouse gestures that
256 select and paste text work with the primary selection (on X), while
257 keyboard commands that kill/copy and paste text work with the
258 clipboard.
259
260 This change also means that the "Copy", "Cut", and "Paste" items of
261 the menu-bar "Edit" menu are now exactly equivalent to, respectively
262 M-w, C-w, and C-y.
263
264 To get back the previous behavior, whereby mouse gestures set the
265 clipboard and retrieve text from there, customize the variables
266 `mouse-drag-copy-region' and (on X only) `x-select-enable-primary' to
267 non-nil values. If you don't want Emacs to put the text into the
268 clipboard, only to the primary selection, additionally customize
269 `x-select-enable-clipboard' to nil.
270
271 These changes in the default behavior are reflected in the default
272 values of several variables:
273
274 *** `select-active-regions' now defaults to t, so active regions set
275 the primary selection. It was nil in previous versions.
276
277 It also accepts a new value, `only', which means to only set the
278 primary selection for temporarily active regions (usually made by
279 mouse-dragging or shift-selection).
280
281 *** `mouse-2' is now bound to `mouse-yank-primary'.
282 Previously, it was bound to `mouse-yank-at-click' (which is now
283 unbound by default).
284
285 *** `x-select-enable-clipboard' now defaults to t on all platforms.
286 Thus, killing and yanking now use the clipboard (in addition to the
287 kill ring). Note that this variable was already non-nil by default on
288 MS-Windows, which does not support the primary selection between
289 applications.
290
291 *** `x-select-enable-primary' now defaults to nil.
292 This variable exists only on X; its default value was t in previous
293 versions.
294
295 *** `mouse-drag-copy-region' now defaults to nil.
296 Its previous default value was t.
297
298 *** Support for X cut buffers has been removed.
299
300 \f
301 * Changes in Specialized Modes and Packages in Emacs 24.1
302
303 ** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
304
305 ** FIXME: xdg-open for browse-url and reportbug, 2010/08.
306
307 ** Archive Mode has basic support to browse 7z archives.
308
309 ** ERC changes
310
311 *** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
312 If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
313 successful NickServ identification, or after `erc-autojoin-delay'
314 seconds. The default value, 'ident, means to autojoin immediately
315 after connecting.
316
317 ** In ido-mode, C-v is no longer bound to ido-toggle-vc.
318 The reason is that this interferes with cua-mode.
319
320 ** partial-completion-mode is now obsolete.
321 You can get a comparable behavior with:
322 (setq completion-styles '(partial-completion initials))
323 (setq completion-pcm-complete-word-inserts-delimiters t)
324
325 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
326
327 ** Calendar, Diary, and Appt
328
329 ---
330 *** The obsolete (since Emacs 22.1) method of enabling the appt package
331 by adding appt-make-list to diary-hook has been removed. Use appt-activate.
332
333 ---
334 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
335 appt-issue-message (use the function appt-activate)
336 appt-visible/appt-msg-window (use the variable appt-display-format)
337
338 ---
339 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
340 view-diary-entries, list-diary-entries, show-all-diary-entries
341
342 ** Customize
343
344 *** Customize buffers now contain a search field.
345 The search is performed using `customize-apropos'.
346 To turn off the search field, set custom-search-field to nil .
347
348 *** Custom options now start out hidden if at their default values.
349 Use the arrow to the left of the option name to toggle visibility.
350
351 *** custom-buffer-sort-alphabetically now defaults to t.
352
353 *** The color widget now has a "Choose" button, which allows you to
354 choose a color via list-colors-display.
355
356 ** Dired-x
357
358 *** dired-jump and dired-jump-other-window called with a prefix argument
359 read a file name from the minibuffer instead of using buffer-file-name.
360
361 ** VC and related modes
362
363 *** New VC commands: vc-log-incoming, vc-log-outgoing, vc-find-conflicted-file.
364
365 **** vc-log-incoming for Git runs "git fetch" so that the necessary
366 data is available locally.
367
368 **** vc-log-incoming and vc-log-outgoing for Git require version 1.7 (or newer).
369
370 *** New key bindings: C-x v I and C-x v O bound to vc-log-incoming and
371 vc-log-outgoing, respectively.
372
373 *** The 'g' key in VC diff, log, log-incoming and log-outgoing buffers
374 reruns the corresponding VC command to compute an up to date version
375 of the buffer.
376
377 *** vc-dir for Bzr supports viewing shelve contents and shelving snapshots.
378
379 *** Special markup can be added to log-edit buffers.
380 The log-edit buffers are expected to have a format similar to email messages
381 with headers of the form:
382 Author: <author of this change>
383 Summary: <one line summary of this change>
384 Fixes: <reference to the bug fixed by this change>
385 Some backends handle some of those headers specially, but any unknown header
386 is just left as is in the message, so it is not lost.
387
388 **** vc-git handles Author: and Date:
389 **** vc-hg handles Author: and Date:
390 **** vc-bzr handles Author:, Date: and Fixes:
391 **** vc-mtn handles Author: and Date:
392
393 *** Pressing g in a *vc-diff* buffer reruns vc-diff, so it will
394 produce an up to date diff.
395
396 ** Directory local variables can apply to file-less buffers.
397 For example, adding "(diff-mode . ((mode . whitespace)))" to your
398 .dir-locals.el file, will turn on `whitespace-mode' for *vc-diff* buffers.
399
400 ** SQL Mode enhancements.
401
402 *** Several variables have been marked as safe local variables. The
403 variables `sql-product', `sql-user', `sql-server', `sql-database' and
404 `sql-port' can now be safely used as local variables.
405
406 *** `sql-dialect' is a synonym for `sql-product'.
407
408 *** Added ability to login with a port on MySQL and Postgres.
409 The custom variable `sql-port' can be specified for connection to
410 MySQL or Postgres servers. By default, the port is not listed in
411 either login parameter, but will be added to the command line if set
412 to a non-zero value.
413
414 *** Dynamic selection of product in an SQL interactive session.
415 If you use `sql-product-interactive' to start an SQL interactive
416 session it uses the current value of `sql-product'. Preceding the
417 invocation with C-u will force it to ask for the product before
418 creating the session.
419
420 *** Renaming a SQL interactive buffer when it is created.
421 Prefixing the SQL interactive commands (`sql-sqlite', `sql-postgres',
422 `sql-mysql', etc.) with C-u will force a new interactive session to be
423 started and will prompt for the new name. This will reduce the need
424 for `sql-rename-buffer' is most common use cases.
425
426 *** Command continuation prompts in SQL interactive mode are suppressed.
427 Multiple line commands in SQL interactive mode, generate command
428 continuation prompts which needlessly confuse the output. These
429 prompts are now filtered out from the output. This change impacts
430 multiple line SQL statements entered with C-j between each line,
431 statements yanked into the buffer and statements sent with
432 `sql-send-*' functions.
433
434 *** Custom variables control prompting for login parameters.
435 Each supported product has a custom variable `sql-*-login-params'
436 which is a list of the parameters to be prompted for before a
437 connection is established.
438
439 The lists consist of the following five tokens: `user', `password',
440 `database', `server', and `port'. The order in which they appear is
441 the order in which they are prompted. The tokens symbols can be
442 replaced by a sublist starting with the token and followed by a plist
443 which control the prompting for values. The tokens `user',
444 `database', and `server' each can take a property of :default which
445 specifies the value to be used if no value is entered. The
446 `database', `server', and `port' tokens handle the :completion
447 property which restricts the entry to either one of the values in the
448 list or to one of the values returned by the function provided as the
449 property value. The `database' and `server' tokens also accept the
450 :file property whose value is a regexp to identify useful file names.
451
452 (user :default DEF)
453 (database :default DEF
454 :file FILEPAT
455 :completion COMPLETE)
456 (server :default DEF
457 :file FILEPAT
458 :completion COMPLETE)
459
460 The FILEPAT when :file is specified is a regexp that will match valid
461 file names (without the directory portion). Generally these strings
462 will be of the form ".+\.SUF" where SUF is the desired file suffix.
463
464 When :completion is specified, the COMPLETE corresponds to the
465 PREDICATE argument to the `completing-read' function (a list of
466 possible values or a function returning such a list).
467
468 *** Added `sql-connection-alist' to record login parameter values.
469 An alist for recording different username, database and server
470 values. If there are multiple databases that you connect to the
471 parameters needed can be stored in this alist.
472
473 For example, the following might be set in the user's init.el:
474
475 (setq sql-connection-alist
476 '((dev (sql-product 'sqlite)
477 (sql-database "/home/mmaug/dev.db"))
478 (prd (sql-product 'oracle)
479 (sql-user "mmaug")
480 (sql-database "iprd2a"))))
481
482 This defines two connections named "dev" and "prd".
483
484 *** Added `sql-connect' to use predefined connections.
485 Sets the login parameters based on the values in the
486 `sql-connection-alist' and start a SQL interactive session. Any
487 values specified in the connection will not be prompted for.
488
489 In the example above, if the user were to invoke M-x sql-connect, they
490 would be prompted for the connection. The user can respond with
491 either "dev" or "prd". The "dev" connection would connect to the
492 SQLite database without prompting; the "prd" connection would prompt
493 for the users password and then connect to the Oracle database.
494
495 **** Added SQL->Start... submenu when connections are defined.
496 When connections have been defined, there is a submenu available that
497 allows the user to select one to start a SQLi session. The "Start
498 SQLi Session" item moves to the "Start..." submenu when cnnections
499 have been defined.
500
501 **** Added "Save Connection" menu item in SQLi buffers.
502 When a SQLi session is not started by a connection then
503 `sql-save-connection' will gather the login params specified for the
504 session and save them as a new connection.
505
506 *** List database objects and details.
507 Once a SQL interactive session has been started, you can get a list of
508 the objects in the database and see details of those objects. The
509 objects shown and the details available are product specific.
510
511 **** List all objects.
512 Using `M-x sql-list-all', `C-c C-l a' or selecting "SQL->List all
513 objects" will list all the objects in the database. At a minimum it
514 lists the tables and views in the database. Preceeding the command by
515 universal argument may provide additional details or extend the
516 listing to include other schemas objects. The list will appear in a
517 separate window in view-mode.
518
519 **** List Table details.
520 Using `M-x sql-list-table', `C-c C-l t' or selecting "SQL->List Table
521 details" will ask for the name of a database table or view and display
522 the list of columns in the relation. Preceeding the comand with the
523 universal argument may provide additional details about each column.
524 The list will appear in a separate window in view-mode.
525
526 *** Added option `sql-send-terminator'.
527 When set makes sure that each command sent with `sql-send-*' commands
528 are properly terminated and submitted to the SQL processor.
529
530 *** Added option `sql-oracle-scan-on'.
531 When set commands sent to Oracle's SQL*Plus are scanned for strings
532 starting with an ampersand and the user is asked for replacement text.
533 In general, the SQL*Plus option SCAN should always be set OFF under
534 SQL interactive mode and this option used in its place.
535
536 *** SQL interactive mode will replace tabs with spaces.
537 This prevents the comand interpretter for MySQL and Postgres from
538 listing object name completions when being sent text via
539 `sql-send-*' functions.
540
541 *** An API for manipulating SQL product definitions has been added.
542
543 ** s-region.el is now declared obsolete, superceded by shift-select-mode
544 enabled by default in 23.1.
545
546 ** gdb-mi
547
548 *** GDB User Interface migrated to GDB Machine Interface and now
549 supports multithread non-stop debugging and debugging of several
550 threads simultaneously.
551
552 ** D-Bus
553
554 *** It is possible now, to access alternative buses than the default
555 system or session bus.
556
557 ** Tramp
558
559 *** The following access methods are discontinued: "ssh1_old",
560 "ssh2_old", "scp1_old", "scp2_old" and "fish".
561
562 \f
563 * New Modes and Packages in Emacs 24.1
564
565 ** New global minor modes electric-pair-mode and electric-indent-mode.
566
567 ** pcase.el provides the ML-style pattern matching macro `pcase'.
568
569 ** smie.el is a package providing a simple generic indentation engine.
570
571 ** secrets.el is an implementation of the Secret Service API, an
572 interface to password managers like GNOME Keyring or KDE Wallet. The
573 Secret Service API requires D-Bus for communication. The command
574 `secrets-show-secrets' offers a buffer with a visualization of the
575 secrets.
576
577 ** notifications.el provides an implementation of the Desktop
578 Notifications API. It requires D-Bus for communication.
579
580 \f
581 * Incompatible Lisp Changes in Emacs 24.1
582
583 ** A backquote not followed by a space is now always treated as new-style.
584
585 ** Test for special mode-class was moved from view-file to view-buffer.
586 FIXME: This only says what was changed, but not what are the
587 programmer-visible consequences.
588
589 ** Passing a nil argument to a minor mode function now turns the mode
590 ON unconditionally.
591
592 ** During startup, Emacs no longer adds entries for `menu-bar-lines'
593 and `tool-bar-lines' to `default-frame-alist' and
594 `initial-frame-alist'. With these alist entries omitted, `make-frame'
595 checks the value of the variable `menu-bar-mode'/`tool-bar-mode' to
596 determine whether to create a menu-bar or tool-bar, respectively.
597 If the alist entries are added, they override the value of
598 `menu-bar-mode'/`tool-bar-mode'.
599
600 ** Regions created by mouse dragging are now normal active regions,
601 similar to the ones created by shift-selection. In previous Emacs
602 versions, these regions were delineated by `mouse-drag-overlay', which
603 has now been removed.
604
605 ** cl.el no longer provides `cl-19'.
606
607 ** The following functions and aliases, obsolete since at least Emacs 21.1,
608 have been removed:
609 comint-kill-output, decompose-composite-char, outline-visible,
610 internal-find-face, internal-get-face, frame-update-faces,
611 frame-update-face-colors, x-frob-font-weight, x-frob-font-slant,
612 x-make-font-bold, x-make-font-demibold, x-make-font-unbold
613 x-make-font-italic, x-make-font-oblique, x-make-font-unitalic
614 x-make-font-bold-italic, mldrag-drag-mode-line, mldrag-drag-vertical-line,
615 iswitchb-default-keybindings, char-bytes, isearch-return-char,
616 make-local-hook
617
618 ** The following variables and aliases, obsolete since at least Emacs 21.1,
619 have been removed:
620 checkdoc-minor-keymap, vc-header-alist, directory-sep-char,
621 font-lock-defaults-alist
622
623 ** The following files, obsolete since at least Emacs 21.1, have been removed:
624 sc.el, x-menu.el, rnews.el, rnewspost.el
625
626 \f
627 * Lisp changes in Emacs 24.1
628
629 ** `image-library-alist' is renamed to `dynamic-library-alist'.
630 The variable is now used to load all kind of supported dynamic libraries,
631 not just image libraries. The previous name is still available as an
632 obsolete alias.
633
634 ** New variable syntax-propertize-function to set syntax-table properties.
635 Replaces font-lock-syntactic-keywords which are now obsolete.
636 This allows syntax-table properties to be set independently from font-lock:
637 just call syntax-propertize to make sure the text is propertized.
638 Together with this new variable come a new hook
639 syntax-propertize-extend-region-functions, as well as two helper functions:
640 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
641 as-is; and syntax-propertize-rules which provides a new way to specify
642 syntactic rules.
643
644 ** New hook post-self-insert-hook run at the end of self-insert-command.
645
646 +++
647 ** Syntax tables support a new "comment style c" additionally to style b.
648 ** frame-local variables cannot be let-bound any more.
649 ** prog-mode is a new major-mode meant to be the parent of programming mode.
650 ** define-minor-mode accepts a new keyword :variable.
651
652 ** `delete-file' and `delete-directory' now accept optional arg TRASH.
653 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
654 both non-nil. Interactively, TRASH defaults to t, unless a prefix
655 argument is supplied (see Trash changes, above).
656
657 ** buffer-substring-filters is obsoleted by filter-buffer-substring-functions.
658
659 ** New completion style `substring'.
660
661 ** Image API
662
663 *** When the image type is one of listed in `image-animated-types'
664 and the number of sub-images in the image is more than one, then the
665 new function `create-animated-image' creates an animated image where
666 sub-images are displayed successively with the duration defined by
667 `image-animate-max-time' and the delay between sub-images defined
668 by the Graphic Control Extension of the image.
669
670 *** `image-extension-data' is renamed to `image-metadata'.
671
672 ** XML and HTML parsing
673
674 *** If Emacs is compiled with libxml2 support (which is the default),
675 two new Emacs Lisp-level functions are defined:
676 `xml-parse-html-string-internal' (which will parse "real world" HTML)
677 and `xml-parse-string-internal' (which parses XML). Both return an
678 Emacs Lisp parse tree.
679
680 FIXME: These should be front-ended by xml.el.
681
682 ** FIXME GnuTLS
683
684 ** Isearch
685
686 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
687
688 ** Progress reporters can now "spin".
689 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
690 now be nil, or omitted. This makes a "non-numeric" reporter. Each
691 time you call `progress-reporter-update' on that progress reporter,
692 with a nil or omitted VALUE argument, the reporter message is
693 displayed with a "spinning bar".
694
695 \f
696 * Changes in Emacs 24.1 on non-free operating systems
697
698 ** New configure.bat option --enable-checking builds emacs with extra
699 runtime checks.
700
701 ** New configure.bat option --distfiles to specify files to be
702 included in binary distribution
703
704 ** New make target `dist' to create binary disttribution for Windows
705 platform
706
707 \f
708 ----------------------------------------------------------------------
709 This file is part of GNU Emacs.
710
711 GNU Emacs is free software: you can redistribute it and/or modify
712 it under the terms of the GNU General Public License as published by
713 the Free Software Foundation, either version 3 of the License, or
714 (at your option) any later version.
715
716 GNU Emacs is distributed in the hope that it will be useful,
717 but WITHOUT ANY WARRANTY; without even the implied warranty of
718 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
719 GNU General Public License for more details.
720
721 You should have received a copy of the GNU General Public License
722 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
723
724 \f
725 Local variables:
726 mode: outline
727 paragraph-separate: "[ \f]*$"
728 end: