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