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[bpt/emacs.git] / etc / NEWS
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29b7722a 1GNU Emacs NEWS -- history of user-visible changes.
5b87ad55 2
73b0cd50 3Copyright (C) 2010-2011 Free Software Foundation, Inc.
5b87ad55 4See the end of the file for license conditions.
a933dad1 5
893db5bc 6Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
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7If possible, use M-x report-emacs-bug.
8
eb199145 9This file is about changes in Emacs version 24.
9a21d88b 10
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11See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12and NEWS.1-17 for changes in older Emacs versions.
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13
14You can narrow news to a specific version by calling `view-emacs-news'
15with a prefix argument or by typing C-u C-h C-n.
3f7194ed 16
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17
18Temporary note:
19 +++ indicates that the appropriate manual has already been updated.
20 --- means no change in the manuals is called for.
21When you add a new item, please add it without either +++ or ---
22so we will look at it and add it to the manual.
23
24\f
eb199145 25* Installation Changes in Emacs 24.1
09e18d03 26
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27** Configure links against libselinux if it is found.
28You can disable this by using --without-selinux.
29
30---
31** By default, the installed Info and man pages are compressed.
32You can disable this by configuring --without-compress-info.
33
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34---
35** There are new configure options:
36--with-mmdf, --with-mail-unlink, --with-mailhost.
37These provide no new functionality, they just remove the need to edit
38lib-src/Makefile by hand in order to use the associated features.
39
e547b051 40---
30c4d8dc 41** Emacs can be compiled against Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
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42to configure. Note that other libraries used by Emacs, RSVG and GConf,
43also depend on Gtk+. You can disable them with --without-rsvg and
44--without-gconf.
45
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46** There is a new configure option --enable-use-lisp-union-type.
47This is only useful for Emacs developers to debug certain types of bugs.
b2957ea8 48This is not a new feature; only the configure flag is new.
d9170db5 49
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50---
51** New translation of the Emacs Tutorial in Hebrew is available
52Type `C-u C-h t' to choose it in case your language setup doesn't
53automatically select it.
54
0bfd685e 55\f
eb199145 56* Startup Changes in Emacs 24.1
4a263588 57
198a7a97 58** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
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59command line arguments, and the EMACS_UNIBYTE environment variable, no
60longer have any effect. (They were declared obsolete in Emacs 23.)
198a7a97 61
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62** New command line option `--no-site-lisp' removes site-lisp directories
63from load-path. -Q now implies this.
64
0bfd685e 65\f
eb199145 66* Changes in Emacs 24.1
7841339b 67
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68** emacsclient changes
69
70*** New emacsclient argument --parent-id ID can be used to open a
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71client frame in parent X window ID, via XEmbed. This works like the
72--parent-id argument to Emacs.
73
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74*** If emacsclient shuts down as a result of Emacs signalling an
75error, its exit status is 1.
76
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77** Completion can cycle, depending on completion-cycle-threshold.
78
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79** auto-mode-case-fold is now enabled by default.
80
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81+++
82** Emacs now supports display and editing of bidirectional text.
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83
84See the node "Bidirectional Editing" in the Emacs Manual for some
85initial documentation.
86
87To turn this on in any given buffer, set the buffer-local variable
88`bidi-display-reordering' to a non-nil value. The default is nil.
89
90The buffer-local variable `bidi-paragraph-direction', if non-nil,
91forces each paragraph in the buffer to have its base direction
92according to the value of this variable. Possible values are
93`right-to-left' and `left-to-right'. If the value is nil (the
94default), Emacs determines the base direction of each paragraph from
95its text, as specified by the Unicode Bidirectional Algorithm.
96
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97The function `current-bidi-paragraph-direction' returns the actual
98value of paragraph base direction at point.
99
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100Reordering of bidirectional text for display in Emacs is a "Full
101bidirectionality" class implementation of the Unicode Bidirectional
102Algorithm.
103
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104Note that some advanced display features, such as overlay strings and
105`display' text properties, do not yet work correctly when
106bidirectional text is reordered for display.
107
303500aa 108** GTK scroll-bars are now placed on the right by default.
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109Use `set-scroll-bar-mode' to change this.
110
20fe03ad 111** GTK tool bars can have just text, just images or images and text.
d8004abe 112Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
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113is taken from the desktop settings.
114
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115** GTK tool bars can be placed on the left/right or top/bottom of the frame.
116The frame-parameter tool-bar-position controls this. It takes the values
1c0d77cc 117top, left, right or bottom. The Options => Show/Hide menu has entries
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118for this.
119
8740c12d 120** ImageMagick support.
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121It is now possible to use the ImageMagick library to load many new
122image formats in Emacs. By default, Emacs links with the ImageMagick
123libraries if they are present at build time. To disable this, use
8ea189f7 124the configure option `--without-imagemagick'.
16a91140 125
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126The new function `imagemagick-types' returns a list of image file
127extensions that your installation of ImageMagick supports. The
128function `imagemagick-register-types' enables ImageMagick support for
b2957ea8 129these image types, minus those listed in `imagemagick-types-inhibit'.
16a91140 130
8740c12d 131See the Emacs Lisp Reference Manual for more information.
16a91140 132
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133** The colors for selected text (the region face) are taken from the GTK
134theme when Emacs is built with GTK.
135
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136** Emacs uses GTK tooltips by default if built with GTK. You can turn that
137off by customizing x-gtk-use-system-tooltips.
138
1ecb2d3f 139** Lucid menus and dialogs can display antialiased fonts if Emacs is built
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140with Xft. To change font, use X resource faceName, for example:
141Emacs.pane.menubar.faceName: Courier-12
142Set faceName to none and use font to use the old X fonts.
99852628 143
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144+++
145** Enhanced support for characters that have no glyphs in available fonts
146If a character has no glyphs in any of the available fonts, Emacs by
147default will display it either as a hexadecimal code in a box or as a
148thin 1-pixel space. In addition to these two methods, Emacs can
149display these characters as empty box, as an acronym, or not display
150them at all. To change how these characters are displayed, customize
151the variable `glyphless-char-display-control'.
152
153On character terminals these methods are used for characters that
154cannot be encoded by the `terminal-coding-system'.
155
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156** On graphical displays, the mode-line no longer ends in dashes.
157
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158** Basic SELinux support has been added.
159This requires Emacs to be linked with libselinux at build time.
160
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161*** Emacs preserves the SELinux file context when backing up, and
162optionally when copying files. To this end, copy-file has an extra
163optional argument, and backup-buffer and friends include the SELinux
164context in their return values.
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165
166*** The new functions file-selinux-context and set-file-selinux-context
167get and set the SELinux context of a file.
168
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169*** Tramp offers handlers for file-selinux-context and set-file-selinux-context
170for remote machines which support SELinux.
171
9c524fcb 172** The function kill-emacs is now run upon receipt of the signals SIGTERM
383ebd15 173and SIGHUP, and upon SIGINT in batch mode.
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174
175** kill-emacs-hook is now also run in batch mode.
176
79ce172a 177** New scrolling commands `scroll-up-command' and `scroll-down-command'
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178(bound to C-v/[next] and M-v/[prior]) does not signal errors at top/bottom
179of buffer at first key-press (instead moves to top/bottom of buffer)
180when a new variable `scroll-error-top-bottom' is non-nil.
79ce172a 181
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182** New scrolling commands `scroll-up-line' and `scroll-down-line'
183scroll a line instead of full screen.
184
a4b000fb 185** New property `scroll-command' should be set on a command's symbol to
b2957ea8 186define it as a scroll command affected by `scroll-preserve-screen-position'.
9013a7f8 187
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188** Trash changes
189
190*** `delete-by-moving-to-trash' now only affects commands that specify
191trashing. This avoids inadvertently trashing temporary files.
192
193*** Calling `delete-file' or `delete-directory' with a prefix argument
194now forces true deletion, regardless of `delete-by-moving-to-trash'.
195
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196** New option `list-colors-sort' defines the color sort order
197for `list-colors-display'.
198
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199** An Emacs Lisp package manager is now included.
200This is a convenient way to download and install additional packages,
42d9cffa 201from a package repository at elpa.gnu.org.
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202
203*** `M-x list-packages' shows a list of packages, which can be
204selected for installation.
205
206*** New command `describe-package', bound to `C-h P'.
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207
208*** By default, all installed packages are loaded and activated
209automatically when Emacs starts up. To disable this, set
210`package-enable-at-startup' to nil. To change which packages are
211loaded, customize `package-load-list'.
212
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213** An Emacs Lisp testing tool is now included.
214Emacs Lisp developers can use this tool to write automated tests for
215their code. See the ERT info manual for details.
216
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217** Custom Themes
218
219*** `M-x customize-themes' lists Custom themes which can be enabled.
220
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221*** New option `custom-theme-load-path' is the load path for themes.
222Emacs no longer looks for custom themes in `load-path'. The default
223is to search in `custom-theme-directory', followed by a built-in theme
224directory named "themes/" in `data-directory'.
225
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226*** New option `custom-safe-themes' records known-safe theme files.
227If a theme is not in this list, Emacs queries before loading it, and
228offers to save the theme to `custom-safe-themes' automatically. By
229default, all themes included in Emacs are treated as safe.
278f6845 230
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231** The user option `remote-file-name-inhibit-cache' controls whether
232the remote file-name cache is used for read access.
233
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234** The standalone programs lib-src/digest-doc and sorted-doc have been
235replaced with Lisp commands `doc-file-to-man' and `doc-file-to-info'.
236
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237** The variable `focus-follows-mouse' now always defaults to nil.
238
0bfd685e 239\f
eb199145 240* Editing Changes in Emacs 24.1
b350bdf2 241
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242+++
243** There is a new command `count-words-region', which does what you expect.
244
67027b49 245** completion-at-point now handles tags and semantic completion.
a982c7ec 246
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247** The default value of `backup-by-copying-when-mismatch' is now t.
248
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249** The command `just-one-space' (C-SPC), if given a negative argument,
250also deletes newlines around point.
251
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252** Deletion changes
253
254*** New option `delete-active-region'.
255If non-nil, C-d, [delete], and DEL delete the region if it is active
256and no prefix argument is given. If set to `kill', these commands
257kill instead.
258
259*** New command `delete-forward-char', bound to C-d and [delete].
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260This is meant for interactive use, and obeys `delete-active-region'.
261The command `delete-char' does not obey `delete-active-region'.
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262
263*** `delete-backward-char' is now a Lisp function.
264Apart from obeying `delete-active-region', its behavior is unchanged.
265However, the byte compiler now warns if it is called from Lisp; you
266should use delete-char with a negative argument instead.
267
268*** The option `mouse-region-delete-keys' has been deleted.
269
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270** Selection changes.
271
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272The default handling of clipboard and primary selections was changed
273to conform with modern X applications. In short, most commands for
274killing and yanking text now use the clipboard, while mouse commands
275use the primary selection.
276
277In the following, we provide a list of these changes, followed by a
278list of steps to get the old behavior back if you prefer that.
279
280*** `mouse-drag-copy-region' now defaults to nil.
281*** `select-active-regions' now defaults to t.
282Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
283the kill-ring. The selected text is put in the primary selection, if
284the system possesses a separate primary selection facility (e.g. X).
285
286**** `select-active-regions' also accepts a new value, `only'.
287This means to only set the primary selection for temporarily active
288regions (usually made by mouse-dragging or shift-selection);
289"ordinary" active regions, such as those made with C-SPC followed by
290point motion, do not alter the primary selection.
291
292*** mouse-2 is now bound to `mouse-yank-primary'.
293This pastes from the primary selection, ignoring the kill-ring.
294Previously, mouse-2 was bound to `mouse-yank-at-click'.
295
296*** `x-select-enable-clipboard' now defaults to t on all platforms.
297*** `x-select-enable-primary' now defaults to nil.
298Thus, commands that kill text or copy it to the kill-ring (such as
299M-w, C-w, and C-k) also use the clipboard---not the primary selection.
300
301**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
302exactly equivalent to, respectively M-w, C-w, and C-y.
303
304**** Note that on MS-Windows, `x-select-enable-clipboard' was already
305non-nil by default, as Windows does not support the primary selection
306between applications.
307
308*** To return to the previous behavior, do the following:
309
310**** Change `mouse-drag-copy-region' to t.
311**** Change `x-select-enable-primary' to t (on X only).
312**** Change `x-select-enable-clipboard' to nil.
313**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 314
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315*** Support for X cut buffers has been removed.
316
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317** New command `rectangle-number-lines', bound to `C-x r N', numbers
318the lines in the current rectangle. With an prefix argument, this
319prompts for a number to count from and for a format string.
320
9bae34bf 321\f
eb199145 322* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 323
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324** The compile.el mode can be used without font-lock-mode.
325`compilation-parse-errors-function' is now obsolete.
326
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327** The Landmark game is now invoked with `landmark', not `lm'.
328
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329** Prolog mode has been completely revamped, with lots of additional
330functionality such as more intelligent indentation, electricty, support for
331more variants, including Mercury, and a lot more.
332
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333** shell-mode can track your cwd by reading it from your prompt.
334Just set shell-dir-cookie-re to an appropriate regexp.
335
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336** Modula-2 mode provides auto-indentation.
337
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338** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
339
360ac530 340** FIXME: xdg-open for browse-url and reportbug, 2010/08.
0ac3effe 341
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342** Archive Mode has basic support to browse 7z archives.
343
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344** browse-url has gotten a new variable that is used for mailto: URLs,
345 `browse-url-mailto-function', which defaults to `browse-url-mail'.
346
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347** ERC changes
348
349*** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
350If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
351successful NickServ identification, or after `erc-autojoin-delay'
352seconds. The default value, 'ident, means to autojoin immediately
353after connecting.
354
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355*** New variable `erc-coding-system-precedence': If we use `undecided'
356as the server coding system, this variable will then be consulted.
357The default is to decode strings that can be decoded as utf-8 as
358utf-8, and do the normal `undecided' decoding for the rest.
359
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360** Eshell changes
361
362*** The default value of eshell-directory-name is a directory named
363"eshell" in `user-emacs-directory'. If the old "~/.eshell/" directory
364exists, that is used instead.
365
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366** In ido-mode, C-v is no longer bound to ido-toggle-vc.
367The reason is that this interferes with cua-mode.
368
c1e25821 369** partial-completion-mode is now obsolete.
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370You can get a comparable behavior with:
371(setq completion-styles '(partial-completion initials))
372(setq completion-pcm-complete-word-inserts-delimiters t)
c1e25821 373
18c812bd 374** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
b2957ea8 375
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376** server can listen on a specific port using the server-port option.
377
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378** Calendar, Diary, and Appt
379
380---
381*** The obsolete (since Emacs 22.1) method of enabling the appt package
382by adding appt-make-list to diary-hook has been removed. Use appt-activate.
383
384---
385*** Some appt variables (obsolete since Emacs 22.1) have been removed:
386appt-issue-message (use the function appt-activate)
387appt-visible/appt-msg-window (use the variable appt-display-format)
388
389---
390*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
391view-diary-entries, list-diary-entries, show-all-diary-entries
392
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393** Customize
394
395*** Customize buffers now contain a search field.
396The search is performed using `customize-apropos'.
42d9cffa 397To turn off the search field, set custom-search-field to nil.
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398
399*** Custom options now start out hidden if at their default values.
400Use the arrow to the left of the option name to toggle visibility.
401
402*** custom-buffer-sort-alphabetically now defaults to t.
403
404*** The color widget now has a "Choose" button, which allows you to
405choose a color via list-colors-display.
406
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407** Dired-x
408
409*** dired-jump and dired-jump-other-window called with a prefix argument
410read a file name from the minibuffer instead of using buffer-file-name.
411
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412** Directory local variables can apply to file-less buffers.
413For example, adding "(diff-mode . ((mode . whitespace)))" to your
d8004abe 414.dir-locals.el file, will turn on `whitespace-mode' for *vc-diff* buffers.
8117868f 415
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416** SQL Mode enhancements.
417
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418*** Several variables have been marked as safe local variables. The
419variables `sql-product', `sql-user', `sql-server', `sql-database' and
420`sql-port' can now be safely used as local variables.
7492acc9 421
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422*** `sql-dialect' is a synonym for `sql-product'.
423
74790210 424*** Added ability to login with a port on MySQL and Postgres.
7492acc9 425The custom variable `sql-port' can be specified for connection to
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426MySQL or Postgres servers. By default, the port is not listed in
427either login parameter, but will be added to the command line if set
428to a non-zero value.
7492acc9 429
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430*** Dynamic selection of product in an SQL interactive session.
431If you use `sql-product-interactive' to start an SQL interactive
432session it uses the current value of `sql-product'. Preceding the
433invocation with C-u will force it to ask for the product before
434creating the session.
435
436*** Renaming a SQL interactive buffer when it is created.
437Prefixing the SQL interactive commands (`sql-sqlite', `sql-postgres',
438`sql-mysql', etc.) with C-u will force a new interactive session to be
439started and will prompt for the new name. This will reduce the need
440for `sql-rename-buffer' is most common use cases.
441
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442*** Command continuation prompts in SQL interactive mode are suppressed.
443Multiple line commands in SQL interactive mode, generate command
444continuation prompts which needlessly confuse the output. These
445prompts are now filtered out from the output. This change impacts
446multiple line SQL statements entered with C-j between each line,
447statements yanked into the buffer and statements sent with
448`sql-send-*' functions.
449
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450*** Custom variables control prompting for login parameters.
451Each supported product has a custom variable `sql-*-login-params'
452which is a list of the parameters to be prompted for before a
453connection is established.
454
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455The lists consist of the following five tokens: `user', `password',
456`database', `server', and `port'. The order in which they appear is
457the order in which they are prompted. The tokens symbols can be
458replaced by a sublist starting with the token and followed by a plist
459which control the prompting for values. The tokens `user',
460`database', and `server' each can take a property of :default which
461specifies the value to be used if no value is entered. The
462`database', `server', and `port' tokens handle the :completion
463property which restricts the entry to either one of the values in the
464list or to one of the values returned by the function provided as the
465property value. The `database' and `server' tokens also accept the
466:file property whose value is a regexp to identify useful file names.
467
468 (user :default DEF)
469 (database :default DEF
470 :file FILEPAT
471 :completion COMPLETE)
472 (server :default DEF
473 :file FILEPAT
474 :completion COMPLETE)
475
476The FILEPAT when :file is specified is a regexp that will match valid
477file names (without the directory portion). Generally these strings
478will be of the form ".+\.SUF" where SUF is the desired file suffix.
479
480When :completion is specified, the COMPLETE corresponds to the
481PREDICATE argument to the `completing-read' function (a list of
482possible values or a function returning such a list).
5474c40f 483
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484*** Added `sql-connection-alist' to record login parameter values.
485An alist for recording different username, database and server
486values. If there are multiple databases that you connect to the
487parameters needed can be stored in this alist.
488
489For example, the following might be set in the user's init.el:
490
491 (setq sql-connection-alist
492 '((dev (sql-product 'sqlite)
493 (sql-database "/home/mmaug/dev.db"))
494 (prd (sql-product 'oracle)
495 (sql-user "mmaug")
496 (sql-database "iprd2a"))))
497
498This defines two connections named "dev" and "prd".
499
500*** Added `sql-connect' to use predefined connections.
501Sets the login parameters based on the values in the
502`sql-connection-alist' and start a SQL interactive session. Any
503values specified in the connection will not be prompted for.
504
505In the example above, if the user were to invoke M-x sql-connect, they
506would be prompted for the connection. The user can respond with
507either "dev" or "prd". The "dev" connection would connect to the
508SQLite database without prompting; the "prd" connection would prompt
509for the users password and then connect to the Oracle database.
510
d26b0ea9 511**** Added SQL->Start... submenu when connections are defined.
b2957ea8 512When connections have been defined, there is a submenu available that
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513allows the user to select one to start a SQLi session. The "Start
514SQLi Session" item moves to the "Start..." submenu when cnnections
515have been defined.
516
517**** Added "Save Connection" menu item in SQLi buffers.
518When a SQLi session is not started by a connection then
519`sql-save-connection' will gather the login params specified for the
520session and save them as a new connection.
521
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522*** List database objects and details.
523Once a SQL interactive session has been started, you can get a list of
524the objects in the database and see details of those objects. The
525objects shown and the details available are product specific.
526
527**** List all objects.
528Using `M-x sql-list-all', `C-c C-l a' or selecting "SQL->List all
529objects" will list all the objects in the database. At a minimum it
530lists the tables and views in the database. Preceeding the command by
531universal argument may provide additional details or extend the
532listing to include other schemas objects. The list will appear in a
533separate window in view-mode.
534
535**** List Table details.
536Using `M-x sql-list-table', `C-c C-l t' or selecting "SQL->List Table
537details" will ask for the name of a database table or view and display
538the list of columns in the relation. Preceeding the comand with the
539universal argument may provide additional details about each column.
540The list will appear in a separate window in view-mode.
541
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542*** Added option `sql-send-terminator'.
543When set makes sure that each command sent with `sql-send-*' commands
544are properly terminated and submitted to the SQL processor.
545
546*** Added option `sql-oracle-scan-on'.
547When set commands sent to Oracle's SQL*Plus are scanned for strings
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548starting with an ampersand and the user is asked for replacement text.
549In general, the SQL*Plus option SCAN should always be set OFF under
550SQL interactive mode and this option used in its place.
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551
552*** SQL interactive mode will replace tabs with spaces.
553This prevents the comand interpretter for MySQL and Postgres from
554listing object name completions when being sent text via
555`sql-send-*' functions.
556
557*** An API for manipulating SQL product definitions has been added.
558
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559** sregex.el is now obsolete, since rx.el is a strict superset.
560
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561** s-region.el is now declared obsolete, superceded by shift-select-mode
562enabled by default in 23.1.
563
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564** gdb-mi
565
566*** GDB User Interface migrated to GDB Machine Interface and now
567supports multithread non-stop debugging and debugging of several
568threads simultaneously.
569
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570** D-Bus
571
572*** It is possible now, to access alternative buses than the default
573system or session bus.
574
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575*** dbus-register-{service,method,property}
576The -method and -property functions do not automatically register
577names anymore.
578
579The new function dbus-register-service registers a service known name
580on a D-Bus without simultaneously registering a property or a method.
412b9ee5 581
459bba37
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582** Tramp
583
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584*** There exists a new inline access method "ksu" (kerberized su).
585
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586*** The following access methods are discontinued: "ssh1_old",
587"ssh2_old", "scp1_old", "scp2_old" and "fish".
588
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589** VC and related modes
590
591*** Support for pulling on distributed version control systems.
659114fd 592The vc-pull command runs a "pull" operation, if it is supported.
0c32ce32 593This updates the current branch from upstream. A prefix argument
659114fd 594means to prompt the user for specifics, e.g. a pull location.
0c32ce32 595
659114fd 596**** vc-update is now an alias for vc-update.
0c32ce32 597
659114fd 598**** Currently supported by Bzr, Git, and Mercurial.
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599
600*** Support for merging on distributed version control systems.
601The vc-merge command now runs a "merge" operation, if it is supported.
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602This merges another branch into the current one. This command prompts
603the user for specifics, e.g. a merge source.
0c32ce32 604
659114fd 605**** Currently supported by Bzr, Git, and Mercurial.
0c32ce32 606
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607** Miscellaneous
608
609---
610*** `copyright-fix-years' can optionally convert consecutive years to ranges.
611
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612\f
613* New Modes and Packages in Emacs 24.1
d445b3f8 614
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615** New global minor modes electric-pair-mode, electric-indent-mode,
616and electric-layout-mode.
3b843809 617
d02c9bcd
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618** pcase.el provides the ML-style pattern matching macro `pcase'.
619
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620** secrets.el is an implementation of the Secret Service API, an
621interface to password managers like GNOME Keyring or KDE Wallet. The
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622Secret Service API requires D-Bus for communication. The command
623`secrets-show-secrets' offers a buffer with a visualization of the
624secrets.
7725ebb7 625
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626** notifications.el provides an implementation of the Desktop
627Notifications API. It requires D-Bus for communication.
628
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629\f
630* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 631
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632** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
633passes it to the mail user agent function. This argument specifies an
634action for returning to the caller after finishing with the mail.
635This is currently used by Rmail to delete a mail window.
636
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637** For mouse click input events in the text area, the Y pixel
638coordinate in the POSITION list now counts from the top of the text
639area, excluding any header line. Previously, it counted from the top
640of the header line.
641
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642** Remove obsolete name `e' (use `float-e' instead).
643
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644** A backquote not followed by a space is now always treated as new-style.
645
fd5c9dfa 646** Test for special mode-class was moved from view-file to view-buffer.
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647FIXME: This only says what was changed, but not what are the
648programmer-visible consequences.
fd5c9dfa 649
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650** Passing a nil argument to a minor mode function now turns the mode
651 ON unconditionally.
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652
653** During startup, Emacs no longer adds entries for `menu-bar-lines'
654and `tool-bar-lines' to `default-frame-alist' and
655`initial-frame-alist'. With these alist entries omitted, `make-frame'
656checks the value of the variable `menu-bar-mode'/`tool-bar-mode' to
657determine whether to create a menu-bar or tool-bar, respectively.
658If the alist entries are added, they override the value of
659`menu-bar-mode'/`tool-bar-mode'.
660
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661** Regions created by mouse dragging are now normal active regions,
662similar to the ones created by shift-selection. In previous Emacs
663versions, these regions were delineated by `mouse-drag-overlay', which
664has now been removed.
d6d8ee7a 665
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666** cl.el no longer provides `cl-19'.
667
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668** The following functions and aliases, obsolete since at least Emacs 21.1,
669have been removed:
670comint-kill-output, decompose-composite-char, outline-visible,
671internal-find-face, internal-get-face, frame-update-faces,
672frame-update-face-colors, x-frob-font-weight, x-frob-font-slant,
673x-make-font-bold, x-make-font-demibold, x-make-font-unbold
674x-make-font-italic, x-make-font-oblique, x-make-font-unitalic
675x-make-font-bold-italic, mldrag-drag-mode-line, mldrag-drag-vertical-line,
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676iswitchb-default-keybindings, char-bytes, isearch-return-char,
677make-local-hook
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678
679** The following variables and aliases, obsolete since at least Emacs 21.1,
680have been removed:
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681checkdoc-minor-keymap, vc-header-alist, directory-sep-char,
682font-lock-defaults-alist
3226d6ca 683
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684** The following files, obsolete since at least Emacs 21.1, have been removed:
685sc.el, x-menu.el, rnews.el, rnewspost.el
686
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687** FIXME finder-inf.el changes.
688
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689\f
690* Lisp changes in Emacs 24.1
9097e8af 691
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692** Removed the stack-trace-on-error variable.
693Also the debugger can now "continue" from an error, which means it will jump
694to the error handler as if the debugger had not been invoked instead of
695jumping all the way to the top-level.
696
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697** New function `read-char-choice' reads a restricted set of characters,
698discarding any inputs not inside the set.
699
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700** `image-library-alist' is renamed to `dynamic-library-alist'.
701The variable is now used to load all kind of supported dynamic libraries,
702not just image libraries. The previous name is still available as an
703obsolete alias.
704
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705** New variable syntax-propertize-function to set syntax-table properties.
706Replaces font-lock-syntactic-keywords which are now obsolete.
707This allows syntax-table properties to be set independently from font-lock:
708just call syntax-propertize to make sure the text is propertized.
709Together with this new variable come a new hook
710syntax-propertize-extend-region-functions, as well as two helper functions:
711syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
712as-is; and syntax-propertize-rules which provides a new way to specify
713syntactic rules.
714
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715** New hook post-self-insert-hook run at the end of self-insert-command.
716
7cf78aac 717+++
c5683ceb 718** Syntax tables support a new "comment style c" additionally to style b.
4e2db1fe 719** frame-local variables cannot be let-bound any more.
10dcc561 720** prog-mode is a new major-mode meant to be the parent of programming mode.
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721** define-minor-mode accepts a new keyword :variable.
722
b2957ea8 723** `delete-file' and `delete-directory' now accept optional arg TRASH.
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724Trashing is performed if TRASH and `delete-by-moving-to-trash' are
725both non-nil. Interactively, TRASH defaults to t, unless a prefix
726argument is supplied (see Trash changes, above).
53967e09 727
8f92b8ad
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728** buffer-substring-filters is obsoleted by filter-buffer-substring-functions.
729
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730** New completion style `substring'.
731
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732** `facemenu-read-color' is now an alias for `read-color'.
733The command `read-color' now requires a match for a color name or RGB
734triplet, instead of signalling an error if the user provides a invalid
735input.
736
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737** Tool-bars can display separators.
738Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 739i.e. via menu entries of the form `(menu-item "--")'.
9317e499 740
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741** Image API
742
743*** When the image type is one of listed in `image-animated-types'
1546c559 744and the number of sub-images in the image is more than one, then the
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745new function `create-animated-image' creates an animated image where
746sub-images are displayed successively with the duration defined by
747`image-animate-max-time' and the delay between sub-images defined
748by the Graphic Control Extension of the image.
749
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750*** `image-extension-data' is renamed to `image-metadata'.
751
71c17aec
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752** XML and HTML parsing
753
754*** If Emacs is compiled with libxml2 support (which is the default),
4b9832a6 755two new Emacs Lisp-level functions are defined:
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756`libxml-parse-html-region' (which will parse "real world" HTML)
757and `libxml-parse-xml-region' (which parses XML). Both return an
4b9832a6
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758Emacs Lisp parse tree.
759
760FIXME: These should be front-ended by xml.el.
761
cf16af42 762** FIXME GnuTLS
71c17aec 763
a6020335
MH
764** Isearch
765
766*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
767
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768** Progress reporters can now "spin".
769The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
770now be nil, or omitted. This makes a "non-numeric" reporter. Each
771time you call `progress-reporter-update' on that progress reporter,
772with a nil or omitted VALUE argument, the reporter message is
773displayed with a "spinning bar".
774
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775\f
776* Changes in Emacs 24.1 on non-free operating systems
d53a60a6 777
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778** New configure.bat option --enable-checking builds emacs with extra
779runtime checks.
780
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781** New configure.bat option --distfiles to specify files to be
782 included in binary distribution
783
784** New make target `dist' to create binary disttribution for Windows
785 platform
786
05197f40 787\f
a933dad1 788----------------------------------------------------------------------
5b87ad55 789This file is part of GNU Emacs.
a933dad1 790
ab73e885 791GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 792it under the terms of the GNU General Public License as published by
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793the Free Software Foundation, either version 3 of the License, or
794(at your option) any later version.
5b87ad55
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795
796GNU Emacs is distributed in the hope that it will be useful,
797but WITHOUT ANY WARRANTY; without even the implied warranty of
798MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
799GNU General Public License for more details.
a933dad1 800
5b87ad55 801You should have received a copy of the GNU General Public License
ab73e885 802along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 803
05197f40 804\f
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805Local variables:
806mode: outline
807paragraph-separate: "[ \f]*$"
808end: