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29b7722a | 1 | GNU Emacs NEWS -- history of user-visible changes. |
5b87ad55 | 2 | |
a1ed8b05 | 3 | Copyright (C) 2010-2012 Free Software Foundation, Inc. |
5b87ad55 | 4 | See the end of the file for license conditions. |
a933dad1 | 5 | |
893db5bc | 6 | Please send Emacs bug reports to bug-gnu-emacs@gnu.org. |
9a21d88b KS |
7 | If possible, use M-x report-emacs-bug. |
8 | ||
eb199145 | 9 | This file is about changes in Emacs version 24. |
9a21d88b | 10 | |
eb199145 GM |
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. | |
9a21d88b KS |
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. | |
3f7194ed | 16 | |
a1ed8b05 GM |
17 | Temporary note: |
18 | +++ indicates that the appropriate manual has already been updated. | |
19 | --- means no change in the manuals is called for. | |
20 | When you add a new item, please add it without either +++ or --- | |
21 | so we will look at it and add it to the manual. | |
22 | ||
23 | \f | |
24 | * Installation Changes in Emacs 24.2 | |
25 | \f | |
26 | * Startup Changes in Emacs 24.2 | |
e5fcdb5e GM |
27 | |
28 | ** Emacs no longer searches for `leim-list.el' files beneath the standard | |
29 | lisp/ directory. There should not be any there anyway. If you have | |
30 | been adding them there, put them somewhere else, eg site-lisp. | |
31 | ||
a1ed8b05 GM |
32 | \f |
33 | * Changes in Emacs 24.2 | |
34 | ||
35 | ** If your Emacs was built from a bzr checkout, the new variable | |
36 | `emacs-bzr-version' contains information about which bzr revision was used. | |
37 | ||
38 | \f | |
39 | * Editing Changes in Emacs 24.2 | |
c25df26e RT |
40 | |
41 | ** M-x move-to-column, if called interactively with no prefix arg, now | |
42 | prompts for a column number. | |
43 | ||
0f84437b TV |
44 | ** `mouse-avoidance-banish-position' can now be used to customize |
45 | `mouse-avoidance-mode' further. | |
46 | ||
09b95ce3 MY |
47 | ** `C-M-f' and `C-M-b' will now move to the path name separator |
48 | character when doing minibuffer filename prompts. | |
49 | ||
5dd1713e CY |
50 | ** `goto-char' is now bound to `M-g c'. |
51 | ||
a1ed8b05 GM |
52 | \f |
53 | * Changes in Specialized Modes and Packages in Emacs 24.2 | |
b2459884 | 54 | |
ab036cd7 SM |
55 | ** which-function-mode now applies to all applicable major modes by default. |
56 | ||
b2459884 | 57 | ** erc will look up server/channel names via auth-source and use the |
29734c21 | 58 | channel keys found, if any. |
b2459884 | 59 | |
29734c21 MN |
60 | ** The `server-auth-key' variable can be used to set a permanent |
61 | shared key for Emacs Server. | |
62 | ||
82f289a4 GM |
63 | ** Obsolete packages: |
64 | ||
65 | *** mailpost.el | |
d57de7fe CY |
66 | |
67 | *** mouse-sel.el | |
68 | ||
a1ed8b05 GM |
69 | \f |
70 | * New Modes and Packages in Emacs 24.2 | |
71 | \f | |
72 | * Incompatible Lisp Changes in Emacs 24.2 | |
b4d3bc10 CY |
73 | |
74 | +++ | |
75 | ** Docstrings starting with `*' no longer indicate user options. | |
76 | Only variables defined using `defcustom' are considered user options. | |
77 | The function `user-variable-p' is now an obsolete alias for | |
78 | `custom-variable-p'. | |
79 | ||
a1ed8b05 GM |
80 | \f |
81 | * Lisp changes in Emacs 24.2 | |
adce950d | 82 | \f |
9078ead6 EZ |
83 | * Changes in Emacs 24.2 on non-free operating systems |
84 | ||
85 | ** New configure.bat options on MS-Windows: | |
86 | ||
87 | *** --without-libxml2 omits support for libxml2, even if its presence | |
88 | is detected. | |
89 | ||
90 | \f | |
eb199145 | 91 | * Installation Changes in Emacs 24.1 |
09e18d03 | 92 | |
31fd3586 GM |
93 | ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3 |
94 | to configure. Note that other libraries used by Emacs, RSVG and GConf, | |
95 | also depend on Gtk+. You can disable them with --without-rsvg and | |
96 | --without-gconf. | |
338648ad | 97 | |
31fd3586 GM |
98 | ** Emacs can be compiled with GnuTLS support. |
99 | This happens by default if a suitably recent version of the library is | |
100 | found at build time. To prevent this, use the configure option | |
101 | `--without-gnutls'. See below for GnuTLS features. | |
338648ad | 102 | |
31fd3586 GM |
103 | ** Emacs can be compiled with SELinux support. |
104 | This happens by default if a suitably recent version of the library is | |
105 | found at build time. To prevent this, use the configure option | |
106 | `--without-selinux'. See below for SELinux features. | |
aded53ff | 107 | |
31fd3586 GM |
108 | ** Emacs can be compiled with ImageMagick support. |
109 | This happens by default if a suitably recent version of the library is | |
110 | found at build time. To prevent this, use the configure option | |
111 | `--without-imagemagick'. See below for ImageMagick features. | |
c1f10868 | 112 | This feature is not available for the Nextstep or MS ports. |
d9170db5 | 113 | |
043efd56 GM |
114 | ** Emacs can be compiled with libxml2 support. |
115 | This happens by default if a suitably recent version of the library is | |
116 | found at build time. To prevent this, use the configure option | |
117 | `--without-xml2'. See below for libxml2 features. | |
118 | ||
7d301ae6 CY |
119 | ** By default, the installed Info and man pages are compressed. |
120 | You can disable this by configuring --without-compress-info. | |
121 | ||
7d301ae6 | 122 | ** New configure option --with-wide-int. |
81eafe29 | 123 | With it, Emacs integers typically have 62 bits, even on 32-bit machines. |
0a768890 PE |
124 | On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB |
125 | to about 2 GiB. | |
81eafe29 | 126 | |
7d301ae6 | 127 | ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost. |
31fd3586 GM |
128 | These provide no new functionality, they just remove the need to edit |
129 | lib-src/Makefile by hand in order to use the associated features. | |
130 | ||
7d301ae6 | 131 | ** New configure option --enable-use-lisp-union-type. |
31fd3586 GM |
132 | This is only useful for Emacs developers to debug certain types of bugs. |
133 | This is not a new feature; only the configure flag is new. | |
041d709f CY |
134 | |
135 | ** The standalone programs digest-doc and sorted-doc are removed. | |
136 | Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'. | |
137 | ||
041d709f CY |
138 | ** The standalone program `fakemail' is removed. |
139 | If you need it, feedmail.el provides a superset of the functionality. | |
140 | ||
0bfd685e | 141 | \f |
eb199145 | 142 | * Startup Changes in Emacs 24.1 |
4a263588 | 143 | |
198a7a97 | 144 | ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte |
adbf62ff GM |
145 | command line arguments, and the EMACS_UNIBYTE environment variable, no |
146 | longer have any effect. (They were declared obsolete in Emacs 23.) | |
198a7a97 | 147 | |
66b7b0fe | 148 | ** New command line option `--no-site-lisp' removes site-lisp directories |
1b5e5b0c GM |
149 | from load-path. -Q now implies this. This option does not affect the |
150 | EMACSLOADPATH environment variable (and hence has no effect for | |
c8d59ba3 | 151 | Nextstep builds). |
66b7b0fe | 152 | |
0bfd685e | 153 | \f |
eb199145 | 154 | * Changes in Emacs 24.1 |
7841339b | 155 | |
a2a25d24 | 156 | ** Completion |
fdeb32ec | 157 | |
dfdb4cad CY |
158 | *** Many packages now use the `completion-at-point' command, |
159 | rather than implementing separate completion commands. | |
160 | ||
de0bde62 | 161 | *** `completion-at-point' now handles tags and semantic completion. |
dfdb4cad | 162 | |
a2a25d24 SM |
163 | *** Completion in a non-minibuffer now tries to detect the end of completion |
164 | and pops down the *Completions* buffer accordingly. | |
dfdb4cad CY |
165 | |
166 | *** New option `completion-cycle-threshold' allows completion cycling. | |
167 | ||
168 | *** New option `completion-category-overrides' for overriding the | |
2c719188 | 169 | default completion style in certain circumstances. |
dfdb4cad | 170 | |
a2a25d24 | 171 | *** New completion style `substring'. |
dfdb4cad CY |
172 | |
173 | *** Completion of buffer names uses `substring' completion by default. | |
174 | ||
175 | *** The option `widget-complete-field' has been removed. | |
620c53a6 | 176 | |
6870aaef | 177 | ** Mail changes |
dfdb4cad | 178 | |
7d301ae6 CY |
179 | *** The first time you try sending mail, Emacs asks for a mail method. |
180 | This is implemented by a new default for `send-mail-function', which | |
181 | is `sendmail-query-once'. This offers to use the smtpmail package, or | |
182 | to use the old defaults relying on external mail facilities | |
183 | (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and | |
184 | `mailclient-send-it' on Windows). | |
dfdb4cad | 185 | |
7d301ae6 CY |
186 | *** Typing C-c m in the buffer made by M-x report-emacs-bug transfers |
187 | the report to your desktop's preferred mail client, if there is one. | |
188 | This uses either the "xdg-email" utility, or Mac OS's "open" command. | |
dfdb4cad | 189 | |
7d301ae6 CY |
190 | *** See Changes in Specialized Modes and Packages for SMTPmail changes |
191 | and Mail mode changes | |
3f88cd72 | 192 | |
041d709f | 193 | ** Emacs server and client changes |
dfdb4cad | 194 | |
7d301ae6 | 195 | *** New option `server-port' specifies the port for TCP Emacs servers. |
dfdb4cad | 196 | |
041d709f | 197 | *** New emacsclient argument -q/--quiet suppresses some status messages. |
dfdb4cad | 198 | |
7d301ae6 CY |
199 | *** New emacsclient argument --frame-parameters specifies the frame |
200 | parameters of any newly-created graphical frame. | |
dfdb4cad CY |
201 | |
202 | *** If emacsclient shuts down due to Emacs signaling an error, | |
203 | its exit status is 1. | |
204 | ||
041d709f CY |
205 | *** New emacsclient argument --parent-id ID. |
206 | This opens a client frame in parent X window ID, via XEmbed, similar | |
207 | to the --parent-id argument to Emacs. | |
208 | ||
d0ce9f8c MB |
209 | ** Internationalization changes |
210 | ||
d0ce9f8c | 211 | *** Emacs now supports display and editing of bidirectional text. |
7d301ae6 CY |
212 | Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are |
213 | displayed in the correct visual order as expected by users of those | |
dfdb4cad CY |
214 | scripts. The display reordering is a "full bidirectionality" class |
215 | implementation of the Unicode Bidirectional Algorithm (UBA). Buffers | |
216 | with no RTL text should look exactly the same as before. | |
f4b6ba46 | 217 | |
041d709f | 218 | **** New buffer-local variable `bidi-display-reordering'. |
7d301ae6 | 219 | To disable display reordering in a buffer, change this to nil. |
d20e1419 | 220 | |
041d709f CY |
221 | **** New buffer-local variable `bidi-paragraph-direction'. |
222 | If nil (the default), Emacs determines the base direction of each | |
dfdb4cad CY |
223 | paragraph from its text, as specified by the UBA. Setting the value |
224 | to `right-to-left' or `left-to-right' forces a base direction on each | |
225 | paragraph. | |
f4b6ba46 | 226 | |
7d301ae6 CY |
227 | Paragraphs with right-to-left base direction are displayed starting at |
228 | the right window edge. | |
f1816485 | 229 | |
dfdb4cad CY |
230 | *** Enhanced support for characters with no glyphs in available fonts, |
231 | or, on text terminals, characters that cannot be encoded by the | |
232 | terminal coding system. The new option `glyphless-char-display-control' | |
233 | specifies how to display them: as a hexadecimal code in a box, a thin | |
234 | 1-pixel space, an empty box, etc. | |
d0ce9f8c | 235 | |
7d301ae6 | 236 | *** New input methods: farsi, farsi-translit, bulgarian-alt-phonetic. |
041d709f | 237 | |
939db9ac CY |
238 | *** `nobreak-char-display' now also highlights Unicode hyphen chars |
239 | (U+2010 and U+2011). | |
240 | ||
7d301ae6 | 241 | *** New Hebrew translation of the Emacs Tutorial. |
31fd3586 GM |
242 | Type `C-u C-h t' to choose it in case your language setup doesn't |
243 | automatically select it. | |
244 | ||
7d301ae6 CY |
245 | ** An Emacs Lisp package manager is now included. |
246 | This is a convenient way to download and install additional packages, | |
247 | from a package repository at http://elpa.gnu.org. | |
dfdb4cad | 248 | |
7d301ae6 CY |
249 | *** M-x list-packages shows a list of packages, which can be |
250 | selected for installation. | |
dfdb4cad | 251 | |
7d301ae6 | 252 | *** New command `describe-package', bound to `C-h P'. |
dfdb4cad | 253 | |
7d301ae6 CY |
254 | *** By default, all installed packages are loaded automatically when |
255 | Emacs starts up. To disable this, set `package-enable-at-startup' to | |
256 | nil. To specify the packages to load, customize `package-load-list'. | |
16a91140 | 257 | |
dfdb4cad CY |
258 | ** Custom theme changes |
259 | ||
7d301ae6 CY |
260 | *** New command `M-x customize-themes', which provides a convenient |
261 | interface for enabling and disabling Custom themes. | |
dfdb4cad | 262 | |
7d301ae6 | 263 | *** New option `custom-theme-load-path' is the load path for themes. |
dfdb4cad CY |
264 | Emacs no longer looks for Custom themes in `load-path'. The default |
265 | value of `custom-theme-load-path' says to look for themes in | |
266 | `custom-theme-directory', followed by a subdirectory of | |
267 | `data-directory' named "themes/", which contains a small selection of | |
268 | built-in Custom themes. | |
269 | ||
7d301ae6 CY |
270 | *** New option `custom-safe-themes' records known-safe theme files. |
271 | If a theme is not in this list, Emacs queries before loading it, and | |
272 | offers to save the theme to `custom-safe-themes' automatically. By | |
273 | default, all themes included in Emacs are treated as safe. | |
b7d65a5f | 274 | |
7d301ae6 | 275 | ** Improved GTK integration |
dfdb4cad | 276 | |
7d301ae6 | 277 | *** GTK scroll-bars are now placed on the right by default. |
dfdb4cad CY |
278 | The function `set-scroll-bar-mode' can change this. |
279 | ||
7d301ae6 | 280 | *** GTK tool bars can have just text, just images or images and text. |
dfdb4cad CY |
281 | Customize `tool-bar-style' to choose the style. On a Gnome desktop, |
282 | the default is taken from desktop settings. | |
283 | ||
284 | *** GTK tool bars can be placed on any edge of the frame. | |
7d301ae6 CY |
285 | The frame-parameter tool-bar-position controls this. It takes the |
286 | values top, left, right or bottom. The Options => Show/Hide menu has | |
287 | entries for this. | |
dfdb4cad | 288 | |
7d301ae6 CY |
289 | *** The default colors for selected text (the `region' face) are taken |
290 | from the GTK theme when Emacs is built with GTK. | |
dfdb4cad | 291 | |
7d301ae6 CY |
292 | *** Emacs uses GTK tooltips by default if built with GTK. |
293 | You can disable this by changing `x-gtk-use-system-tooltips' to nil. | |
a5bee597 | 294 | |
dfdb4cad CY |
295 | ** Graphical interface changes |
296 | ||
297 | *** On graphical displays, the mode-line no longer ends in dashes. | |
298 | Also, the first dash (which does not indicate anything) is just | |
299 | displayed as a space. | |
300 | ||
301 | *** `menu-bar-select-buffer-function' lets you choose another operation | |
302 | instead of `switch-to-buffer' when selecting an item in the Buffers menu. | |
303 | ||
304 | *** Lucid menus and dialogs can display antialiased fonts if Emacs is | |
305 | built with Xft. These fonts can be set via X resources, for example: | |
306 | Emacs.pane.menubar.font: Courier-12 | |
307 | ||
7d301ae6 | 308 | ** Exiting changes |
dfdb4cad | 309 | |
7d301ae6 | 310 | *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP, |
dfdb4cad CY |
311 | or if it receives a SIGINT signal in batch mode. |
312 | ||
7d301ae6 CY |
313 | *** `kill-emacs-hook' is now also run in batch mode. |
314 | Third-party code which adds to `kill-emacs-hook' should check if they | |
315 | do the right thing in batch mode. | |
9c524fcb | 316 | |
041d709f | 317 | ** Scrolling changes |
dfdb4cad | 318 | |
041d709f | 319 | *** New scrolling commands `scroll-up-command' and `scroll-down-command' |
0a19a6f8 | 320 | (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom |
7d301ae6 | 321 | of buffer at first key-press (instead they move to top/bottom of buffer) |
550f41cd | 322 | when `scroll-error-top-bottom' is non-nil. |
dfdb4cad CY |
323 | |
324 | *** New option `scroll-error-top-bottom' (see above). | |
325 | ||
041d709f | 326 | *** New scrolling commands `scroll-up-line' and `scroll-down-line' |
5a97d2da | 327 | scroll a line instead of full screen. |
dfdb4cad | 328 | |
041d709f | 329 | *** New property `scroll-command' should be set on a command's symbol to |
b2957ea8 | 330 | define it as a scroll command affected by `scroll-preserve-screen-position'. |
dfdb4cad | 331 | |
041d709f | 332 | *** If you customize `scroll-conservatively' to a value greater than 100, |
d0f69533 EZ |
333 | Emacs will never recenter point in the window when it scrolls due to |
334 | cursor motion commands or commands that move point (e.f., `M-g M-g'). | |
335 | Previously, you needed to use `most-positive-fixnum' as the value of | |
336 | `scroll-conservatively' to achieve the same effect. | |
dfdb4cad | 337 | |
7d301ae6 | 338 | *** "Aggressive" scrolling now honors the scroll margins. |
d0f69533 EZ |
339 | If you customize `scroll-up-aggressively' or |
340 | `scroll-down-aggressively' and move point off the window, Emacs now | |
341 | scrolls the window so as to avoid positioning point inside the scroll | |
342 | margin. | |
343 | ||
7d301ae6 CY |
344 | ** Basic SELinux support has been added. |
345 | This requires Emacs to be linked with libselinux at build time. | |
f1a5d776 | 346 | |
dfdb4cad CY |
347 | *** Emacs preserves the SELinux file context when backing up. |
348 | Also, the function `copy-file' has an extra optional argument for | |
349 | preserving SELinux context, and the return value of `backup-buffer' | |
350 | now includes the SELinux context. | |
f0bf7c8e | 351 | |
dfdb4cad | 352 | *** New functions `file-selinux-context' and `set-file-selinux-context' |
7d301ae6 | 353 | get and set the SELinux context of a file. |
44198b6e | 354 | |
7d301ae6 | 355 | ** Trash changes |
dfdb4cad | 356 | |
7d301ae6 CY |
357 | *** `delete-by-moving-to-trash' now only affects commands that specify |
358 | trashing. This avoids inadvertently trashing temporary files. | |
dfdb4cad | 359 | |
7d301ae6 CY |
360 | *** Calling `delete-file' or `delete-directory' with a prefix argument |
361 | now forces true deletion, regardless of `delete-by-moving-to-trash'. | |
278f6845 | 362 | |
041d709f | 363 | ** File- and directory-local variable changes |
dfdb4cad | 364 | |
041d709f CY |
365 | *** You can stop directory local vars from applying to subdirectories. |
366 | Add an element (subdirs . nil) to the alist portion of any variables | |
367 | settings to indicate that the section should not apply to | |
368 | subdirectories. | |
dfdb4cad | 369 | |
041d709f CY |
370 | *** Directory local variables can apply to some file-less buffers. |
371 | Affected modes include dired, vc-dir, and log-edit. For example, | |
372 | adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will | |
373 | turn on `whitespace-mode' for *vc-diff* buffers. Modes should call | |
374 | `hack-dir-local-variables-non-file-buffer' to support this. | |
dfdb4cad | 375 | |
041d709f CY |
376 | *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated. |
377 | Instead, use "eval: (minor-mode 1)". | |
c136e5cd | 378 | |
7b447e9b GM |
379 | *** The variable `inhibit-first-line-modes-regexps' has been renamed |
380 | to `inhibit-local-variables-regexps'. As the name suggests, it now | |
dfdb4cad CY |
381 | applies to ALL file local variables, not just -*- lines. The |
382 | associated `inhibit-first-line-modes-suffixes' has been renamed in the | |
383 | corresponding way. | |
5d907d6c | 384 | |
0a2132ba CY |
385 | ** Window changes |
386 | ||
91b65361 CY |
387 | *** The `quit-window' command now restores the last buffer displayed |
388 | in the quitted window. | |
389 | ||
0a2132ba CY |
390 | *** Resizing an Emacs frame now preserves proportional window sizes, |
391 | modulo restrictions like window minimum sizes and fixed-size windows. | |
392 | ||
393 | *** The behavior of `display-buffer' is now customizable in detail. | |
dfdb4cad | 394 | |
0a2132ba CY |
395 | **** New option `display-buffer-base-action' specifies a list of |
396 | user-determined display "actions" (functions and optional arguments | |
397 | for choosing the displaying window). | |
398 | ||
399 | This takes precedence over the default display action, which is | |
400 | specified by `display-buffer-fallback-action'. | |
401 | ||
402 | **** New option `display-buffer-alist' maps buffer name regexps to | |
403 | display actions, taking precedence over `display-buffer-base-action'. | |
404 | ||
a0c2d0ae MR |
405 | *** New option `window-combination-limit'. |
406 | The new option `window-combination-limit' allows to return the space | |
407 | obtained for resizing or creating a window more reliably to the window | |
408 | from which such space was obtained. | |
0a2132ba | 409 | |
a0c2d0ae MR |
410 | *** New option `window-combination-resize'. |
411 | The new option `window-combination-resize' allows to split a window that | |
412 | otherwise cannot be split because it's too small by stealing space from | |
413 | other windows in the same combination. Subsequent resizing or deletion | |
414 | of the window will resize all windows in the same combination as well. | |
0a2132ba | 415 | |
91b65361 CY |
416 | *** New option `frame-auto-hide-function' lets you choose between |
417 | iconifying or deleting a frame when burying a buffer in a dedicated | |
418 | frame, or quitting a window showing a buffer in a frame of its own. | |
419 | ||
0a2132ba | 420 | *** New commands `maximize-window' and `minimize-window'. |
53964682 | 421 | These maximize and minimize the size of a window within its frame. |
0a2132ba | 422 | |
0a2132ba CY |
423 | *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'. |
424 | These functions allow to navigate through the live buffers that have | |
425 | been shown in a specific window. | |
426 | ||
7d301ae6 | 427 | ** Minibuffer changes |
dfdb4cad | 428 | |
7d301ae6 | 429 | *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'. |
104dc9c6 GM |
430 | This is handy for minibuffer-only frames, and is also used for the feature |
431 | where mouse-1 pops up *Messages*"', which can now easily be changed. | |
041d709f | 432 | |
7d301ae6 | 433 | *** Minibuffers set `truncate-lines' to nil. |
f66eca26 | 434 | If you want to change the value to something else, you could use |
7d301ae6 CY |
435 | for example `minibuffer-setup-hook'. |
436 | ||
7d301ae6 CY |
437 | ** `auto-mode-case-fold' is now enabled by default. |
438 | ||
7d301ae6 | 439 | ** `backup-by-copying-when-mismatch' now defaults to t. |
f66eca26 | 440 | |
dfdb4cad CY |
441 | ** New basic faces `error', `warning', `success'. |
442 | These are used to highlight text indicating failure, caution or | |
443 | successful operation. | |
444 | ||
445 | ** New option `list-colors-sort' defines the color sort order | |
446 | for `list-colors-display'. | |
447 | ||
448 | ** The variable `focus-follows-mouse' now always defaults to nil. | |
449 | ||
0bfd685e | 450 | \f |
eb199145 | 451 | * Editing Changes in Emacs 24.1 |
b350bdf2 | 452 | |
892777ba | 453 | ** Search changes |
dfdb4cad CY |
454 | |
455 | *** C-y in Isearch is now bound to `isearch-yank-kill', instead of | |
456 | `isearch-yank-line'. | |
457 | ||
458 | *** M-y in Isearch is now bound to `isearch-yank-pop', instead of | |
459 | `isearch-yank-kill'. | |
460 | ||
461 | *** M-s C-e in Isearch is now bound to `isearch-yank-line'. | |
462 | ||
b2b0776e | 463 | ** New commands `count-words-region' and `count-words'. |
dfdb4cad | 464 | |
10607bea CY |
465 | *** M-= is bound to `count-words-region', not `count-lines-region'. |
466 | The `count-words-region' command, when called interactively, reports | |
467 | the number of lines, words, and characters in the region. It is a | |
468 | superset of the old `count-lines-region', which is now an obsolete | |
469 | alias for it. | |
ea4f7750 | 470 | |
ec9da840 | 471 | ** The command `just-one-space' (M-SPC), if given a negative argument, |
1c708c1a CY |
472 | also deletes newlines around point. |
473 | ||
b9229673 | 474 | ** Deletion changes |
dfdb4cad | 475 | |
b9229673 | 476 | *** New option `delete-active-region'. |
ddb54206 | 477 | If non-nil, [delete] and DEL delete the region if it is active and no |
dfdb4cad | 478 | prefix argument is given. If set to `kill', those commands kill |
ddb54206 | 479 | instead. |
dfdb4cad | 480 | |
59ee0542 | 481 | *** New command `delete-forward-char', bound to [delete]. |
42d9cffa CY |
482 | This is meant for interactive use, and obeys `delete-active-region'. |
483 | The command `delete-char' does not obey `delete-active-region'. | |
dfdb4cad | 484 | |
b9229673 CY |
485 | *** `delete-backward-char' is now a Lisp function. |
486 | Apart from obeying `delete-active-region', its behavior is unchanged. | |
7d301ae6 CY |
487 | However, the byte compiler now warns if it is called from Lisp; Lisp |
488 | callers should use delete-char with a negative argument instead. | |
dfdb4cad | 489 | |
b9229673 CY |
490 | *** The option `mouse-region-delete-keys' has been deleted. |
491 | ||
f9d71b42 CY |
492 | ** Selection changes. |
493 | ||
7d301ae6 CY |
494 | The default handling of clipboard and primary selections has been |
495 | changed to conform with modern X applications. In short, most | |
496 | commands for killing and yanking text now use the clipboard, while | |
497 | mouse commands use the primary selection. | |
b1ab31ae CY |
498 | |
499 | In the following, we provide a list of these changes, followed by a | |
500 | list of steps to get the old behavior back if you prefer that. | |
501 | ||
b1ab31ae CY |
502 | *** `select-active-regions' now defaults to t. |
503 | Merely selecting text (e.g. with drag-mouse-1) no longer puts it in | |
963578d3 | 504 | the kill ring. The selected text is put in the primary selection, if |
b1ab31ae CY |
505 | the system possesses a separate primary selection facility (e.g. X). |
506 | ||
507 | **** `select-active-regions' also accepts a new value, `only'. | |
508 | This means to only set the primary selection for temporarily active | |
509 | regions (usually made by mouse-dragging or shift-selection); | |
510 | "ordinary" active regions, such as those made with C-SPC followed by | |
511 | point motion, do not alter the primary selection. | |
512 | ||
963578d3 CY |
513 | **** `mouse-drag-copy-region' now defaults to nil. |
514 | ||
b1ab31ae CY |
515 | *** mouse-2 is now bound to `mouse-yank-primary'. |
516 | This pastes from the primary selection, ignoring the kill-ring. | |
517 | Previously, mouse-2 was bound to `mouse-yank-at-click'. | |
dfdb4cad | 518 | |
b1ab31ae | 519 | *** `x-select-enable-clipboard' now defaults to t on all platforms. |
dfdb4cad | 520 | |
b1ab31ae CY |
521 | *** `x-select-enable-primary' now defaults to nil. |
522 | Thus, commands that kill text or copy it to the kill-ring (such as | |
523 | M-w, C-w, and C-k) also use the clipboard---not the primary selection. | |
524 | ||
525 | **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now | |
dfdb4cad | 526 | exactly equivalent to M-w, C-w, and C-y respectively. |
b1ab31ae CY |
527 | |
528 | **** Note that on MS-Windows, `x-select-enable-clipboard' was already | |
529 | non-nil by default, as Windows does not support the primary selection | |
530 | between applications. | |
531 | ||
532 | *** To return to the previous behavior, do the following: | |
dfdb4cad | 533 | |
104c2fe9 | 534 | **** Change `select-active-regions' to nil. |
b1ab31ae CY |
535 | **** Change `mouse-drag-copy-region' to t. |
536 | **** Change `x-select-enable-primary' to t (on X only). | |
537 | **** Change `x-select-enable-clipboard' to nil. | |
538 | **** Bind `mouse-yank-at-click' to mouse-2. | |
f9d71b42 | 539 | |
084e6df3 | 540 | *** Support for X cut buffers has been removed. |
dfdb4cad | 541 | |
3fd50d5c CY |
542 | *** X clipboard managers are now supported. |
543 | To inhibit this, change `x-select-enable-clipboard-manager' to nil. | |
4b80f674 | 544 | |
dfdb4cad CY |
545 | ** New command `C-x r N' (`rectangle-number-lines') numbers the lines |
546 | in the current rectangle. With a prefix argument, this prompts for a | |
547 | number to count from and for a format string. | |
99f053cf | 548 | |
7d301ae6 | 549 | ** `redisplay-dont-pause' now defaults to t. |
6bf7006f EZ |
550 | This makes Emacs feel more responsive to editing commands that arrive |
551 | at high rate, e.g. if you lean on some key, because stopping redisplay | |
552 | in the middle (when this variable is nil) forces more expensive | |
553 | updates later on, and Emacs appears to be unable to keep up. | |
554 | ||
e70b5064 CY |
555 | ** The behavior of <TAB> for active regions in Text mode has changed. |
556 | In Text and related modes, typing <TAB> (`indent-for-tab-command') | |
557 | when the region is active causes Emacs to indent all the lines in the | |
558 | region, aligning them with the line previous to the first line in the | |
559 | region (or with the left margin if there is no previous line). | |
560 | ||
dfdb4cad CY |
561 | ** When `occur' is called with a prefix argument, matching strings are |
562 | collected into the `*Occur*' buffer without line numbers. If there | |
563 | are parenthesized subexpressions in the specified regexp, `occur' | |
564 | reads replacement text that may contain \\& and \\N whose convention | |
565 | follows `replace-match'. | |
566 | ||
9bae34bf | 567 | \f |
eb199145 | 568 | * Changes in Specialized Modes and Packages in Emacs 24.1 |
efeb796b | 569 | |
041d709f | 570 | ** Archive Mode has basic support for browsing and updating 7z archives. |
d76674bb | 571 | |
b7c3692a | 572 | ** BibTeX mode |
dfdb4cad | 573 | |
2de69e00 | 574 | *** BibTeX mode now supports biblatex. |
7d301ae6 CY |
575 | Use the variable `bibtex-dialect' to select different BibTeX dialects. |
576 | `bibtex-entry-field-alist' is now an obsolete alias for | |
577 | `bibtex-BibTeX-entry-alist'. | |
578 | ||
dfdb4cad CY |
579 | *** New command `bibtex-search-entries', bound to C-c C-a. |
580 | ||
b7c3692a | 581 | *** New `bibtex-entry-format' option `sort-fields', disabled by default. |
dfdb4cad | 582 | |
022fe7ce RW |
583 | *** New variable `bibtex-search-entry-globally'. |
584 | ||
7d301ae6 | 585 | ** Browse-url |
dfdb4cad | 586 | |
7d301ae6 | 587 | *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s. |
dfdb4cad | 588 | |
7d301ae6 CY |
589 | *** The default browser used by the package is now the "xdg-open" program, |
590 | on platforms that support it. This calls your desktop's preferred browser. | |
591 | ||
cf16af42 GM |
592 | ** Calendar, Diary, and Appt |
593 | ||
7d301ae6 | 594 | *** Diary entries can contain non-printing "comments". |
548d0a63 GM |
595 | See the variable `diary-comment-start'. |
596 | ||
5006e634 GM |
597 | *** Appointments can specify their individual warning times. |
598 | See the variable `appt-warning-time-regexp'. | |
599 | ||
0a2bb1a9 GM |
600 | *** The function specified by `appt-disp-window-function' may be passed |
601 | lists of arguments if multiple appointments are due at similar times. | |
602 | If you are using a custom function for this, you should update it. | |
603 | ||
7454f200 GM |
604 | *** New function `diary-hebrew-birthday'. |
605 | ||
e565dd37 GM |
606 | *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array' |
607 | may no longer be nil, but must all be strings. | |
608 | ||
7d301ae6 CY |
609 | *** The obsolete (since Emacs 22.1) method of enabling the appt |
610 | package by adding `appt-make-list' to `diary-hook' has been removed. | |
611 | Use `appt-activate' instead. | |
cf16af42 | 612 | |
cf16af42 GM |
613 | *** Some appt variables (obsolete since Emacs 22.1) have been removed: |
614 | appt-issue-message (use the function appt-activate) | |
615 | appt-visible/appt-msg-window (use the variable appt-display-format) | |
616 | ||
cf16af42 GM |
617 | *** Some diary function aliases (obsolete since Emacs 22.1) have been removed: |
618 | view-diary-entries, list-diary-entries, show-all-diary-entries | |
619 | ||
551b046f | 620 | ** CC Mode |
dfdb4cad | 621 | |
551b046f | 622 | *** New feature to "guess" the style in an existing buffer. |
7d301ae6 | 623 | The main entry point is M-x c-guess. |
041d709f | 624 | |
551b046f AM |
625 | *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang). |
626 | ||
dfdb4cad | 627 | *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes. |
551b046f AM |
628 | Thus C-M-a will, by default, go to the beginning of the immediate function, |
629 | not the top level. | |
630 | ||
dfdb4cad | 631 | *** "Macros with semicolons" can be registered for correct indentation. |
551b046f AM |
632 | Where such a macro ends a line (no semicolon) the next statement is no longer |
633 | parsed as a statement continuation. | |
634 | ||
dfdb4cad | 635 | ** Comint and modes derived from it use the standard completion code. |
041d709f CY |
636 | |
637 | ** Compilation mode | |
dfdb4cad | 638 | |
7d301ae6 | 639 | *** Compilation mode can be used without Font Lock mode. |
041d709f CY |
640 | `compilation-parse-errors-function' is now obsolete. |
641 | ||
dfdb4cad | 642 | *** New variable `compilation-filter-start', which is bound while |
7d301ae6 CY |
643 | `compilation-filter-hook' runs. It records the start position of the |
644 | text inserted by `compilation-filter'. | |
041d709f | 645 | |
47a6a35f GM |
646 | *** `compilation-error-screen-columns' and `compilation-first-column' |
647 | are obeyed in the editing buffer. So programming language modes can | |
7d301ae6 CY |
648 | set them, whereas previously only the value in the *Compilation* |
649 | buffer was used. | |
1dce7193 | 650 | |
52834b6b CY |
651 | ** Customize |
652 | ||
653 | *** Customize buffers now contain a search field. | |
654 | The search is performed using `customize-apropos'. | |
7d301ae6 | 655 | To turn off the search field, set `custom-search-field' to nil. |
52834b6b CY |
656 | |
657 | *** Custom options now start out hidden if at their default values. | |
658 | Use the arrow to the left of the option name to toggle visibility. | |
659 | ||
660 | *** custom-buffer-sort-alphabetically now defaults to t. | |
661 | ||
662 | *** The color widget now has a "Choose" button, which allows you to | |
7d301ae6 | 663 | choose a color via `list-colors-display'. |
52834b6b | 664 | |
041d709f CY |
665 | ** D-Bus |
666 | ||
5da3be7f GM |
667 | *** It is now possible to access buses other than the default system |
668 | or session bus. | |
041d709f | 669 | |
7d301ae6 | 670 | *** The `dbus-register-method' and `dbus-register-property' functions |
5da3be7f | 671 | optionally do not register names. |
041d709f | 672 | |
7d301ae6 | 673 | *** The new function `dbus-register-service' registers a known service |
dfdb4cad | 674 | name on a D-Bus without also registering a property or a method. |
041d709f | 675 | |
f5d6548a | 676 | ** Dired-x |
425a25f1 | 677 | |
7d301ae6 CY |
678 | *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'), |
679 | if called with a prefix argument, read a file name from the minibuffer | |
680 | instead of using the current buffer. | |
f5d6548a | 681 | |
7d301ae6 | 682 | *** The "dired local variables" feature of Dired-x is obsolete. |
817b48a7 | 683 | The standard directory local variables feature replaces it. |
8117868f | 684 | |
041d709f | 685 | ** ERC changes |
7492acc9 | 686 | |
c4077254 GM |
687 | *** New options `erc-autojoin-timing' and `erc-autojoin-delay', |
688 | controlling attempts to autojoin a channel. | |
041d709f CY |
689 | |
690 | *** New variable `erc-coding-system-precedence': If we use `undecided' | |
691 | as the server coding system, this variable will then be consulted. | |
692 | The default is to decode strings that can be decoded as utf-8 as | |
693 | utf-8, and do the normal `undecided' decoding for the rest. | |
7492acc9 | 694 | |
041d709f | 695 | ** Eshell changes |
7492acc9 | 696 | |
05f77e38 GM |
697 | *** The default value of `eshell-directory-name' has changed |
698 | to be an "eshell" directory in `user-emacs-directory'. | |
699 | The old "~/.eshell/" directory is still used if it exists, though. | |
041d709f CY |
700 | |
701 | ** gdb-mi | |
dfdb4cad CY |
702 | |
703 | *** The M-x gdb command now uses the GDB Machine Interface protocol. | |
05f77e38 GM |
704 | It now supports multithread non-stop debugging and simultaneous |
705 | debugging of several threads. | |
7492acc9 | 706 | |
18af70d0 CY |
707 | ** Image mode |
708 | ||
05f77e38 GM |
709 | *** RET (`image-toggle-animation') toggles animation, if applicable. |
710 | Animation plays once, unless the option `image-animate-loop' is non-nil. | |
18af70d0 | 711 | |
041d709f | 712 | ** Info |
723ee192 | 713 | |
7d301ae6 | 714 | *** New command M-x info-display-manual displays a named Info manual. |
2ebc3b94 GM |
715 | If that manual is already visited in some Info buffer, it displays |
716 | that buffer. (This is handy if you have many manuals in many *info* | |
717 | buffers, and don't remember the name of the buffer visiting the manual | |
718 | you want to consult.) Otherwise, it loads and displays the manual. | |
691cf4a0 | 719 | |
24ea72d3 EZ |
720 | *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'. |
721 | This is for compatibility with the stand-alone Info reader program, | |
722 | and also because `Info-edit' is a rarely used command that is disabled | |
723 | by default. | |
724 | ||
7d301ae6 | 725 | ** Mail mode changes (not Message mode) |
dfdb4cad | 726 | |
7d301ae6 | 727 | *** New command M-x mail-add-attachment for adding MIME attachments |
7d301ae6 | 728 | |
dfdb4cad CY |
729 | *** The command M-x mail-attach-file was renamed to M-x mail-insert-file. |
730 | (Its name is misleading, since it has nothing to do with MIME | |
731 | attachments.) The old name is now an obsolete alias to the new name. | |
732 | ||
06b08b88 | 733 | ** MH-E has been upgraded to MH-E version 8.3.1. |
041d709f | 734 | See MH-E-NEWS for details. |
37221432 | 735 | |
041d709f | 736 | ** Modula-2 mode provides auto-indentation. |
37221432 | 737 | |
041d709f | 738 | ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags. |
3c3d4f5b | 739 | |
5d1ac394 | 740 | ** nXML mode no longer binds C-RET to `nxml-complete'. |
dfdb4cad CY |
741 | Completion is now performed via `completion-at-point', bound to C-M-i |
742 | or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the | |
743 | default), this performs tag completion. | |
5d1ac394 | 744 | |
041d709f | 745 | ** Prolog mode has been completely revamped, with lots of additional |
7d301ae6 CY |
746 | functionality such as more intelligent indentation, electricity, |
747 | support for more variants, including Mercury, and a lot more. | |
041d709f CY |
748 | |
749 | ** Rmail | |
750 | ||
751 | *** The command `rmail-epa-decrypt' decrypts OpenPGP data | |
752 | in the Rmail incoming message. | |
753 | ||
50419064 GM |
754 | *** The variable `rmail-message-filter' no longer has any effect. |
755 | This change was made in Emacs 23.1 but was not advertised at the time. | |
756 | Try using `rmail-show-message-hook' instead. | |
757 | ||
717a1362 | 758 | ** Shell mode |
dfdb4cad CY |
759 | |
760 | *** M-x shell prompts for the shell path name if the default directory | |
761 | is a remote file name and neither the environment variable $ESHELL nor | |
762 | the variable `explicit-shell-file-name' is set. | |
763 | ||
764 | *** TAB is now bound to the standard `completion-at-point' command, | |
765 | which now implements the pcomplete rules for shell command completion. | |
717a1362 | 766 | |
7d301ae6 CY |
767 | ** SMTPmail |
768 | ||
dfdb4cad | 769 | *** SMTPmail now uses encrypted connections (via STARTTLS) by default |
7d301ae6 CY |
770 | if the mail server supports them. This uses either built-in GnuTLS |
771 | support, or the starttls.el library. Customize `smtpmail-stream-type' | |
772 | to change this. | |
773 | ||
7d301ae6 CY |
774 | *** The variable `smtpmail-auth-credentials' has been removed. |
775 | By default, the information is now stored in the file ~/.authinfo. | |
dfdb4cad CY |
776 | This was the default value of smtpmail-auth-credentials. If you had |
777 | customized smtpmail-auth-credentials to a list of user names and | |
778 | passwords, those settings are not used. During your first connection | |
779 | to the smtp server, Emacs will prompt for the user name and password, | |
780 | and offer to save them to ~/.authinfo. Or you can manually copy the | |
781 | credentials to ~/.authinfo. For example, if you had | |
7d301ae6 CY |
782 | |
783 | (setq smtpmail-auth-credentials | |
784 | '(("mail.example.org" 25 "jim" "s!cret"))) | |
785 | ||
786 | then the equivalent line in ~/.authinfo would be | |
787 | ||
788 | machine mail.example.org port 25 login jim password s!cret | |
789 | ||
790 | See the auth-source manual for more information, e.g. on encrypting | |
791 | the credentials file. | |
792 | ||
7d301ae6 | 793 | *** The variable `smtpmail-starttls-credentials' has been removed. |
dfdb4cad | 794 | If you had that set, you need to put |
7d301ae6 CY |
795 | |
796 | machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert" | |
797 | ||
798 | in your ~/.authinfo file instead. | |
799 | ||
34e8a2da | 800 | ** SQL mode |
041d709f | 801 | |
34e8a2da GM |
802 | *** New options `sql-port', `sql-connection-alist', `sql-send-terminator', |
803 | and `sql-oracle-scan-on'. | |
041d709f | 804 | |
dfdb4cad | 805 | *** New options controlling prompting for login parameters. |
34e8a2da GM |
806 | Each supported product has a custom variable `sql-*-login-params', |
807 | which is a list of the parameters to be prompted for before a | |
808 | connection is established. | |
041d709f CY |
809 | |
810 | *** The command `sql-product-interactive' now takes a prefix argument, | |
34e8a2da | 811 | which causes it to prompt for an SQL product. |
041d709f | 812 | |
34e8a2da | 813 | *** Product-specific SQL interactive commands now take prefix arguments. |
041d709f CY |
814 | These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.), |
815 | given a prefix argument, prompt for a name for the SQL interactive | |
816 | buffer. This reduces the need for calling `sql-rename-buffer'. | |
817 | ||
818 | *** SQL interactive modes suppress command continuation prompts, and | |
819 | replace tabs with spaces. The first change impacts multiple line SQL | |
820 | statements entered with C-j between each line, statements yanked into | |
821 | the buffer and statements sent with `sql-send-*' functions. The | |
34e8a2da GM |
822 | second prevents the MySQL and Postgres interpreters from listing |
823 | object name completions when sent text via `sql-send-*' functions. | |
041d709f CY |
824 | |
825 | *** New command `sql-connect' starts a predefined SQLi session, | |
826 | using the login parameters from `sql-connection-alist'. | |
827 | ||
828 | *** New "Save Connection" menu item in SQLi buffers. | |
829 | This gathers the login params specified for the SQLi session, if it | |
830 | was not started by a connection, and saves them as a new connection. | |
831 | ||
34e8a2da GM |
832 | *** New commands for listing database objects and details: |
833 | sql-list-all and sql-list-table. | |
041d709f CY |
834 | |
835 | *** An API for manipulating SQL product definitions has been added. | |
836 | ||
837 | ** TeX modes | |
838 | ||
839 | *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly. | |
412b9ee5 | 840 | |
459bba37 | 841 | ** Tramp |
dfdb4cad | 842 | |
7d301ae6 | 843 | *** New inline access method "ksu" (kerberized su). |
dfdb4cad | 844 | |
459bba37 | 845 | *** The following access methods are discontinued: "ssh1_old", |
ea843702 | 846 | "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish". |
dfdb4cad | 847 | |
b011fbfe GM |
848 | *** The user option `remote-file-name-inhibit-cache' controls whether |
849 | remote file attributes are cached for better performance. | |
dfdb4cad | 850 | |
58f74fe4 MA |
851 | *** The option `ange-ftp-binary-file-name-regexp' has changed its |
852 | default value to "". | |
dfdb4cad | 853 | |
7d301ae6 CY |
854 | *** Handlers for `file-selinux-context' and `set-file-selinux-context' |
855 | for remote machines which support SELinux. | |
58f74fe4 | 856 | |
dfdb4cad | 857 | ** New function `url-queue-retrieve', which behaves like url-retrieve, |
a48ec60c GM |
858 | but with limits (`url-queue-parallel-processes', `url-queue-timeout') on |
859 | the degree of parallelism. | |
177549d0 | 860 | |
0c32ce32 CY |
861 | ** VC and related modes |
862 | ||
863 | *** Support for pulling on distributed version control systems. | |
7d301ae6 CY |
864 | The command C-x v + (`vc-pull') runs a "pull" operation, if it is |
865 | supported (currently with Bzr, Git, and Mercurial), to update the | |
866 | current branch and working tree. A prefix argument means to prompt | |
867 | the user for specifics, e.g. a pull location. | |
0c32ce32 | 868 | |
dab3703d | 869 | *** `vc-update' is now an alias for `vc-pull'. |
0c32ce32 CY |
870 | |
871 | *** Support for merging on distributed version control systems. | |
7d301ae6 CY |
872 | The command C-x v m (`vc-merge') now runs a "merge" operation, if it |
873 | is supported (currently with Bzr, Git, and Mercurial), to merge | |
874 | changes from another branch into the current one. It prompts for | |
875 | specifics, e.g. a merge source. | |
0c32ce32 | 876 | |
2afef60a | 877 | *** New option `vc-revert-show-diff' controls whether `vc-revert' |
bbe43420 | 878 | shows a diff while querying the user. It defaults to t. |
2afef60a | 879 | |
d4eb88c7 CY |
880 | *** Log entries in some Log View buffers can be toggled to display a |
881 | longer description by typing RET (log-view-toggle-entry-display). | |
dab3703d GM |
882 | This is currently supported for Bzr, Git, and Mercurial (to support |
883 | another backend, define a `log-view-expanded-log-entry-function'). | |
7d301ae6 | 884 | In the Log View buffers made by C-x v L (`vc-print-root-log'), you can |
d4eb88c7 CY |
885 | use this to display the full log entry for the revision at point. |
886 | ||
1c6c854e CS |
887 | *** New command `vc-ediff' allows visual comparison of two revisions |
888 | of a file similar to `vc-diff', but using ediff backend. | |
889 | ||
86c60681 CY |
890 | *** The option `vc-initial-comment' was removed in Emacs 23.2, but |
891 | this was not advertised at the time. | |
892 | ||
86c60681 CY |
893 | *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'. |
894 | Since Emacs 23, it has done the same thing as `toggle-read-only', but | |
80c6d77f GM |
895 | this was not advertised at the time. |
896 | ||
041d709f CY |
897 | ** Obsolete modes |
898 | ||
23d70505 GM |
899 | *** abbrevlist.el |
900 | ||
f8ca9162 | 901 | *** erc-hecomplete.el (use erc-pcomplete.el instead) |
23d70505 GM |
902 | |
903 | *** partial-completion-mode (complete.el) is obsolete. | |
041d709f CY |
904 | You can get a comparable behavior with: |
905 | (setq completion-styles '(partial-completion initials)) | |
906 | (setq completion-pcm-complete-word-inserts-delimiters t) | |
907 | ||
23d70505 GM |
908 | *** pc-mode.el is obsolete (CUA mode is much more comprehensive). |
909 | ||
2c719188 | 910 | *** pgg is obsolete (use EasyPG instead). |
041d709f CY |
911 | |
912 | *** sregex.el is obsolete, since rx.el is a strict superset. | |
913 | ||
23d70505 GM |
914 | *** s-region.el and pc-select.el are obsolete. |
915 | They are superseded by shift-select-mode, enabled by default since 23.1. | |
916 | ||
2c719188 | 917 | *** vc-mcvs.el is obsolete (for lack of a maintainer). |
ca5eed61 | 918 | |
0fe719e6 GM |
919 | ** Miscellaneous |
920 | ||
05f77e38 | 921 | *** The Landmark game is now invoked with `landmark', not `lm'. |
c6ad2a4e | 922 | Its functions and variables have been similarly renamed. |
05f77e38 | 923 | |
dfdb4cad | 924 | *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'. |
05f77e38 GM |
925 | (This interfered with cua-mode.) |
926 | ||
9f678528 GM |
927 | *** f90.el has some support for Fortran 2008 syntax. |
928 | ||
0fe719e6 GM |
929 | *** `copyright-fix-years' can optionally convert consecutive years to ranges. |
930 | ||
5b3e6db8 GM |
931 | *** New command `nato-region' converts text to NATO phonetic alphabet. |
932 | ||
eb199145 GM |
933 | \f |
934 | * New Modes and Packages in Emacs 24.1 | |
d445b3f8 | 935 | |
60e56523 | 936 | ** Occur Edit mode applies edits made in *Occur* buffers to the |
8c0f49f0 | 937 | original buffers. It is bound to "e" in Occur mode. |
60e56523 | 938 | |
a075a2c5 GM |
939 | ** New global minor mode electric-pair-mode. |
940 | When enabled, typing an open parenthesis automatically inserts the | |
941 | matching closing one. | |
942 | ||
943 | ** New global minor mode electric-indent-mode. | |
944 | When enabled, typing certain characters triggers reindentation. | |
cd3308f3 GM |
945 | Major modes wishing to use this can set electric-indent-chars or |
946 | electric-indent-functions. | |
a075a2c5 GM |
947 | |
948 | ** New global minor mode electric-layout-mode. | |
949 | When enabled, typing certain characters automatically inserts newlines. | |
cd3308f3 | 950 | Major modes wishing to use this can set electric-layout-rules. |
3b843809 | 951 | |
a83ec3c9 CY |
952 | ** tabulated-list.el provides a generic major mode for tabulated data, |
953 | from which other modes can be derived. | |
954 | ||
d02c9bcd SM |
955 | ** pcase.el provides the ML-style pattern matching macro `pcase'. |
956 | ||
7725ebb7 MA |
957 | ** secrets.el is an implementation of the Secret Service API, an |
958 | interface to password managers like GNOME Keyring or KDE Wallet. The | |
065f2743 MA |
959 | Secret Service API requires D-Bus for communication. The command |
960 | `secrets-show-secrets' offers a buffer with a visualization of the | |
961 | secrets. | |
7725ebb7 | 962 | |
f9e78150 MA |
963 | ** notifications.el provides an implementation of the Desktop |
964 | Notifications API. It requires D-Bus for communication. | |
965 | ||
12fe5bcc MA |
966 | ** soap-client.el supports access to SOAP web services from Emacs. |
967 | soap-inspect.el is an interactive inspector for SOAP WSDL structures. | |
968 | ||
ff1796f3 | 969 | ** New generic mode, xmodmap-generic-mode, for xmodmap files. |
ad7d6ecb | 970 | |
53bbe3ad | 971 | ** New emacs-lock.el package. |
7d301ae6 CY |
972 | The previous version has been moved to obsolete/old-emacs-lock.el. |
973 | Now, there is a proper minor mode `emacs-lock-mode'. Protection | |
974 | against exiting Emacs and killing the buffer can be set separately. | |
975 | The mechanism for automatically turning off protection for buffers | |
976 | with dead inferior processes has been generalized. | |
53bbe3ad | 977 | |
eb199145 GM |
978 | \f |
979 | * Incompatible Lisp Changes in Emacs 24.1 | |
6dfcbe31 | 980 | |
7d301ae6 CY |
981 | ** Passing a nil argument to a minor mode function call now ENABLES |
982 | the minor mode unconditionally. This is so that you can write e.g. | |
983 | ||
dfdb4cad | 984 | (add-hook 'text-mode-hook 'foo-mode) |
7d301ae6 | 985 | |
dfdb4cad CY |
986 | to enable foo-mode in Text mode buffers, removing the need for |
987 | `turn-on-foo-mode' style functions. This affects all mode commands | |
988 | defined by `define-minor-mode'. If called interactively, the mode | |
989 | command still toggles the minor mode. | |
7d301ae6 | 990 | |
d268b4fe CY |
991 | ** The return value of `backup-buffer' has changed. |
992 | It is now a list of three elements, where the second element is a list | |
993 | describing the original file's SELinux context. If Emacs or the | |
f003f294 | 994 | system lacks SELinux support, the context list is (nil nil nil nil). |
7d301ae6 | 995 | See "Basic SELinux support" above, under "Changes in Emacs 24.1". |
d268b4fe | 996 | |
dfdb4cad CY |
997 | ** `char-direction-table' and the `char-direction' function were deleted. |
998 | They were buggy and inferior to the new support of bidirectional | |
999 | editing introduced in Emacs 24. If you need the bidirectional | |
1000 | properties of a character, use `get-char-code-property' with the last | |
1001 | argument `bidi-class'. | |
fa6996bc | 1002 | |
470d996d TV |
1003 | ** `copy-directory' now copies the source directory as a subdirectory |
1004 | of the target directory, if the latter is an existing directory. The | |
1005 | new optional arg COPY-CONTENTS, if non-nil, makes the function copy | |
1006 | the contents directly into a pre-existing target directory. | |
1007 | ||
9173a8fb CY |
1008 | ** For mouse click input events in the text area, the Y pixel |
1009 | coordinate in the POSITION list now counts from the top of the text | |
1010 | area, excluding any header line. Previously, it counted from the top | |
1011 | of the header line. | |
1012 | ||
7d301ae6 CY |
1013 | ** Support for "old-style" backquotes, obsolete for 10+ years, has |
1014 | been further reduced. Now a backquote not followed by a space is | |
1015 | always treated as a "new-style" backquote. Please remove all | |
1016 | "old-style" backquotes from your code. If your code uses backquotes | |
1017 | as documented in the Elisp manual, and compiles without warning, then | |
1018 | you have nothing to do in this regard. Code not following the | |
1019 | appropriate conventions may fail to compile. | |
50ab02c5 CY |
1020 | |
1021 | The most common cause of trouble seems to be an old-style backquote | |
1022 | followed by a newline. Another cause of trouble is vector notation | |
1023 | for key sequence notation: instead of [(control ,)] and [(control ')], | |
1024 | you should write [(control ?,)] and [(control ?')], which will work in | |
7d301ae6 | 1025 | older Emacsen too. |
288cf4e9 | 1026 | |
520f2425 GM |
1027 | ** The macro `eval-at-startup' was removed in Emacs 23.2, but this |
1028 | was not advertised at the time. The function `custom-initialize-delay' | |
1029 | replaced all known uses. | |
1030 | ||
7d301ae6 CY |
1031 | ** `view-buffer' now treats special mode-class in the same way that |
1032 | `view-file' has since Emacs 22 (i.e. it won't enable View mode if the | |
1033 | major mode is special). | |
fd5c9dfa | 1034 | |
7d301ae6 | 1035 | ** Menu and tool bar changes |
6431f2e6 | 1036 | |
7d301ae6 | 1037 | *** During startup, Emacs no longer adds entries for `menu-bar-lines' |
0a19a6f8 JB |
1038 | and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'. |
1039 | With these alist entries omitted, `make-frame' checks the value of the | |
1040 | variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create | |
1041 | a menu-bar or tool-bar, respectively. If the alist entries are added, | |
1042 | they override the value of `menu-bar-mode'/`tool-bar-mode'. | |
6431f2e6 | 1043 | |
7d301ae6 CY |
1044 | *** The menu bar bindings's caches are not used any more. |
1045 | Use (where-is-internal <def> nil t) instead. | |
1046 | ||
fe0aa820 | 1047 | ** Regions created by mouse dragging are now normal active regions, |
dfdb4cad | 1048 | similar to those created by shift-selection (see Selection changes |
7d301ae6 CY |
1049 | above). In previous Emacs versions, these regions were delineated by |
1050 | `mouse-drag-overlay'; that variable has been removed. | |
d6d8ee7a | 1051 | |
7d301ae6 CY |
1052 | ** The fourth argument of `filter-buffer-substring' has been removed. |
1053 | If you want to remove text properties from the final result, simply | |
1054 | pass the result through substring-no-properties. | |
34c99998 | 1055 | |
4583e796 GM |
1056 | ** cl.el no longer provides `cl-19'. |
1057 | ||
7d301ae6 CY |
1058 | ** The following obsolete functions and aliases have been removed |
1059 | (the appropriate new function is given in parentheses; "not needed" | |
1060 | means you can just remove all calls to the function in question): | |
1061 | ||
1062 | *** `comint-kill-output' (`comint-delete-output') | |
1063 | *** `decompose-composite-char' (`char-to-string') | |
1064 | *** `outline-visible' (`outline-invisible-p') | |
1065 | *** `internal-find-face' (`facep') | |
1066 | *** `internal-get-face' (`facep and check-face') | |
1067 | *** `frame-update-faces' (not needed) | |
1068 | *** `frame-update-face-colors' (`frame-set-background-mode') | |
1069 | *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions) | |
2c719188 | 1070 | *** `x-make-font-bold and x-make-font-demibold (`make-face-bold') |
7d301ae6 CY |
1071 | *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic') |
1072 | *** `x-make-font-bold-italic' (`make-face-bold-italic') | |
1073 | *** `x-make-font-unbold' (`make-face-unbold') | |
1074 | *** `x-make-font-unitalic' (`make-face-unitalic') | |
1075 | *** `mldrag-drag-mode-line' (`mouse-drag-mode-line') | |
1076 | *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line') | |
1077 | *** `iswitchb-default-keybindings' (`iswitchb-mode') | |
1078 | *** `char-bytes' (== 1) | |
1079 | *** `isearch-return-char' (`isearch-printing-char') | |
1080 | *** `make-local-hook' (not needed) | |
1081 | *** `set-screen-height' (`set-frame-height') | |
1082 | *** `set-screen-width' (`set-frame-width') | |
1083 | ||
7d301ae6 CY |
1084 | ** The following obsolete variables and varaliases have been removed |
1085 | (the appropriate new variable is given in parentheses): | |
1086 | ||
1087 | *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map') | |
1088 | *** `vc-header-alist' (`vc-BACKEND-header') | |
1089 | *** `directory-sep-char' (== ?/) | |
1090 | *** `font-lock-defaults-alist' (`font-lock-defaults') | |
1091 | *** `e' (`float-e'). | |
3226d6ca | 1092 | |
041d709f | 1093 | ** The following obsolete files were removed: |
7b0e3048 GM |
1094 | sc.el, x-menu.el, rnews.el, rnewspost.el |
1095 | ||
7d301ae6 CY |
1096 | ** The format of the finder-inf.el file has changed, since the Finder |
1097 | mechanism is now based on the package system. The variable | |
1098 | `finder-package-info' is replaced by `package--builtins' and | |
1099 | `finder-keywords-hash'. | |
33658d4e | 1100 | |
c2c79260 DE |
1101 | ** When generating autoloads, `update-directory-autoloads' no longer |
1102 | assumes every inspected file is in your `load-path'. It instead | |
1103 | generates relative names according to the current `load-path'. | |
1104 | ||
eb199145 GM |
1105 | \f |
1106 | * Lisp changes in Emacs 24.1 | |
9097e8af | 1107 | |
041d709f | 1108 | ** Code can now use lexical scoping by default instead of dynamic scoping. |
dfdb4cad | 1109 | The `lexical-binding' variable enables lexical scoping for local |
48da7392 | 1110 | variables. It is typically set via a file-local variable in the first |
dfdb4cad CY |
1111 | line of the file, in which case it applies to all the code in that |
1112 | file. | |
1113 | ||
041d709f CY |
1114 | *** `eval' takes a new optional argument `lexical' to choose the new lexical |
1115 | binding instead of the old dynamic binding mode. | |
dfdb4cad | 1116 | |
041d709f CY |
1117 | *** Lexically scoped interpreted functions are represented with a new form |
1118 | of function value which looks like (closure ENV ARGS &rest BODY). | |
1119 | ||
1120 | *** New macro `letrec' to define recursive local functions. | |
dfdb4cad CY |
1121 | |
1122 | *** `defvar' and `defconst' now mark the variable as special (dynamic). | |
1123 | So do `defcustom' and other forms that call `defvar' as a subroutine. | |
1124 | ||
041d709f CY |
1125 | *** New function `special-variable-p' to check whether a variable is |
1126 | declared as dynamically bound. | |
1127 | ||
1128 | ** An Emacs Lisp testing tool is now included. | |
1129 | Emacs Lisp developers can use this tool to write automated tests for | |
1130 | their code. See the ERT info manual for details. | |
1131 | ||
1132 | ** Changes for bidirectional display and editing | |
f1816485 | 1133 | |
041d709f | 1134 | *** New function `current-bidi-paragraph-direction'. |
7d301ae6 | 1135 | This returns the base direction of the paragraph at point. |
041d709f | 1136 | |
041d709f | 1137 | *** New function `bidi-string-mark-left-to-right'. |
dfdb4cad CY |
1138 | Given a string containing characters from right-to-left scripts, this |
1139 | function returns another string which can be safely inserted into a | |
1140 | buffer, such that any following text will be always displayed to the | |
7d301ae6 CY |
1141 | right of that string. (This works by appending an invisible Unicode |
1142 | "LEFT-TO-RIGHT MARK" character if the argument string might need it.) | |
041d709f | 1143 | |
7d301ae6 | 1144 | This is useful when the buffer has overall left-to-right paragraph |
dfdb4cad CY |
1145 | direction and you need to insert a string whose contents are not known |
1146 | in advance, without disrupting the layout of the line. | |
041d709f | 1147 | |
bee0fcef | 1148 | ** Window changes |
dfdb4cad | 1149 | |
c4682d18 MR |
1150 | *** Window tree functions are accessible in Elisp. |
1151 | Functions are provided to return the parent, siblings or child windows | |
1152 | of any window including internal windows (windows not associated with a | |
1153 | buffer) in the window tree. | |
dfdb4cad | 1154 | |
24300f5f CY |
1155 | **** New function `window-valid-p' gives non-nil for live and internal |
1156 | windows. | |
dfdb4cad | 1157 | |
24300f5f | 1158 | **** Window manipulation can deal with internal windows. |
c4682d18 MR |
1159 | Many window handling functions like `split-window', `delete-window', or |
1160 | `delete-other-windows' as well as the window resizing functions can now | |
1161 | act on any window including internal ones. | |
dfdb4cad | 1162 | |
c4682d18 MR |
1163 | *** window-total-height/-width vs window-body-height/-width. |
1164 | The function `window-height' has been renamed to `window-total-height' | |
1165 | and `window-width' has been renamed to `window-body-width'. The old | |
1166 | names are provided as aliases. Two new functions `window-total-width' | |
1167 | and `window-body-height' are provided. | |
dfdb4cad | 1168 | |
c4682d18 MR |
1169 | *** Window parameters specific to window handling functions. |
1170 | For each window you can specify a parameter to override the default | |
1171 | behavior of a number of functions like `split-window', `delete-window' | |
ed6235ea MR |
1172 | and `delete-other-windows'. The variable `ignore-window-parameters' |
1173 | allows to ignore processing such parameters. | |
dfdb4cad | 1174 | |
c4682d18 | 1175 | *** New semantics of third argument of `split-window'. |
c4682d18 MR |
1176 | The third argument of `split-window' has been renamed to SIDE and can be |
1177 | set to any of the values 'below, 'right, 'above, or 'left to make the | |
1178 | new window appear on the corresponding side of the window that shall be | |
1179 | split. Any other value of SIDE will cause `split-window' to split the | |
1180 | window into two side-by-side windows as before. | |
dfdb4cad | 1181 | |
c4682d18 | 1182 | *** Window resizing functions. |
487ffd7a | 1183 | A new standard function for resizing windows called `window-resize' has |
c4682d18 MR |
1184 | been introduced. This and all other functions for resizing windows no |
1185 | longer delete any windows when they become too small. | |
dfdb4cad | 1186 | |
b3c0dbfd MR |
1187 | *** Deleting the selected window now selects the most recently selected |
1188 | live window on that frame instead. | |
dfdb4cad | 1189 | |
c4682d18 MR |
1190 | *** `adjust-window-trailing-edge' adjustments. |
1191 | `adjust-window-trailing-edge' can now deal with fixed-size windows and | |
1192 | is able to resize other windows if a window adjacent to the trailing | |
1193 | edge cannot be shrunk any more. This makes its behavior more similar to | |
1194 | that of Emacs 21 without compromising, however, its inability to delete | |
1195 | windows which was introduced in Emacs 22. | |
dfdb4cad | 1196 | |
c4682d18 MR |
1197 | *** Window-local buffer lists. |
1198 | Windows now have local buffer lists. This means that removing a buffer | |
1199 | from display in a window will preferably show the buffer previously | |
1200 | shown in that window with its previous window-start and window-point | |
1201 | positions. This also means that the same buffer may be automatically | |
1202 | shown twice even if it already appears in another window. | |
dfdb4cad | 1203 | |
bee0fcef CY |
1204 | *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW, |
1205 | which if non-nil requires the buffer to be displayed in the currently | |
1206 | selected window, signaling an error otherwise. If nil, another window | |
1207 | can be used, e.g. if the selected one is strongly dedicated. | |
dfdb4cad | 1208 | |
0a2132ba | 1209 | *** `split-window-vertically' and `split-window-horizontally' renamed |
2d197ffb CY |
1210 | to `split-window-below' and `split-window-right' respectively. |
1211 | The old names are kept as aliases. | |
dfdb4cad | 1212 | |
0a2132ba CY |
1213 | *** Display actions |
1214 | ||
1215 | **** The second arg to `display-buffer' and `pop-to-buffer' is now | |
1216 | named ACTION, and takes a display action of the same form as | |
1217 | `display-buffer-base-action' (see Changes, above). A non-nil, | |
1218 | non-list value is treated specially, as the old meaning. | |
1219 | ||
1220 | **** New variable `display-buffer-overriding-action'. | |
1221 | ||
1222 | **** The procedure of `display-buffer' etc. to choose a window is | |
1223 | determined by combining `display-buffer-overriding-action', | |
1224 | `display-buffer-alist', the ACTION arg, `display-buffer-base-action', | |
1225 | and `display-buffer-fallback-action'. The second and fourth of these | |
1226 | are user-customizable variables. | |
1227 | ||
1228 | See the docstring of `display-buffer' for details. | |
bee0fcef | 1229 | |
20d2304d CY |
1230 | *** New functions `window-state-get' and `window-state-put'. |
1231 | These functions allow to save and restore the state of an arbitrary | |
1232 | frame or window as an Elisp object. | |
1233 | ||
a2a25d24 | 1234 | ** Completion |
041d709f | 1235 | |
7d301ae6 CY |
1236 | *** New variable `completion-extra-properties' used to specify extra |
1237 | properties of the current completion: | |
a2a25d24 SM |
1238 | - :annotate-function, same as the old completion-annotate-function. |
1239 | - :exit-function, function to call after completion took place. | |
1240 | ||
7d301ae6 CY |
1241 | *** Functions on `completion-at-point-functions' can return any of the |
1242 | properties valid for `completion-extra-properties'. | |
a2a25d24 | 1243 | |
7d301ae6 | 1244 | *** `completion-annotate-function' is obsolete. |
a2a25d24 | 1245 | |
620c53a6 SM |
1246 | *** New `metadata' method for completion tables. The metadata thus returned |
1247 | can specify various details of the data returned by `all-completions': | |
1248 | - `category' is the kind of objects returned (e.g., `buffer', `file', ...), | |
1249 | used to select a style in completion-category-overrides. | |
1250 | - `annotation-function' to add annotations in *Completions*. | |
1251 | - `display-sort-function' to specify how to sort entries in *Completions*. | |
1252 | - `cycle-sort-function' to specify how to sort entries when cycling. | |
1253 | ||
7d301ae6 CY |
1254 | *** `minibuffer-local-filename-must-match-map' is not used any more. |
1255 | Instead, the bindings in `minibuffer-local-filename-completion-map' | |
1256 | are combined with `minibuffer-local-must-match-map'. | |
de09aa52 CY |
1257 | |
1258 | *** New variable `completing-read-function' allows overriding the | |
1259 | behavior of `completing-read'. | |
1260 | ||
f042970d | 1261 | ** `glyphless-char-display' can now distinguish between graphical and |
16a43933 CY |
1262 | text terminal display, via a char-table entry that is a cons cell. |
1263 | ||
7d301ae6 | 1264 | ** `pre-command-hook'/`post-command-hook' are not reset to nil on error. |
f6d62986 SM |
1265 | Instead, the offending function is removed. |
1266 | ||
b1f6fa26 CY |
1267 | ** New hook types |
1268 | ||
1269 | *** New function `run-hook-wrapped' for running an abnormal hook by | |
1270 | passing the hook functions as arguments to a "wrapping" function. | |
e7bc51d0 | 1271 | Like `run-hook-with-args-until-success', it stops at the first |
5385447f | 1272 | non-nil return value. |
e7bc51d0 | 1273 | |
b1f6fa26 CY |
1274 | *** New macro `with-wrapper-hook' for running an abnormal hook as a |
1275 | set of "wrapping" filters, similar to around advice. | |
54521c99 GM |
1276 | (A version of this macro was actually added in Emacs 23.2 but was not |
1277 | advertised at the time.) | |
f6d62986 | 1278 | |
0b19b281 | 1279 | ** Debugger changes |
dfdb4cad | 1280 | |
0b19b281 | 1281 | *** New macro `condition-case-unless-debug' (this was actually added in |
1be3ca5a | 1282 | Emacs 23.1 as condition-case-no-debug, but not advertised) |
dfdb4cad | 1283 | |
0b19b281 | 1284 | *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised. |
dfdb4cad | 1285 | |
0b19b281 | 1286 | *** Variable `stack-trace-on-error' removed. |
dfdb4cad | 1287 | |
0b19b281 CY |
1288 | *** The debugger can now "continue" from an error, which means it will |
1289 | jump to the error handler as if the debugger had not been invoked | |
1290 | instead of jumping all the way to the top-level. | |
dfdb4cad | 1291 | |
0b19b281 CY |
1292 | *** Set `debug-on-event' to enter the debugger on events like SIGUSR1. |
1293 | This can be useful when `inhibit-quit' is set. | |
d6b1d521 | 1294 | |
953cebf5 | 1295 | ** The new function `server-eval-at' allows evaluation of Lisp forms on |
37576acd | 1296 | named Emacs server instances. |
7deebf1b | 1297 | |
1b9f60cc GM |
1298 | ** `call-process' and `call-process-region' allow a `(:file "file")' spec |
1299 | to redirect STDOUT to a file. | |
7deebf1b | 1300 | |
7d301ae6 CY |
1301 | ** The function `format-time-string' now supports the %N directive, |
1302 | for higher-resolution time stamps. | |
da97a9e6 | 1303 | |
0b19b281 | 1304 | ** New input reading functions |
dfdb4cad | 1305 | |
0b19b281 CY |
1306 | *** New function `read-char-choice' reads a restricted set of |
1307 | characters, discarding any inputs not inside the set. | |
dfdb4cad | 1308 | |
0b19b281 CY |
1309 | *** The command `read-color' now requires a match for a color name |
1310 | or RGB triplet, instead of signaling an error if the user provides | |
1311 | invalid input. | |
dfdb4cad | 1312 | |
0b19b281 | 1313 | **** `facemenu-read-color' is now an alias for `read-color'. |
3ef01959 | 1314 | |
2e288d54 JB |
1315 | ** `image-library-alist' is renamed to `dynamic-library-alist'. |
1316 | The variable is now used to load all kind of supported dynamic libraries, | |
1317 | not just image libraries. The previous name is still available as an | |
1318 | obsolete alias. | |
1319 | ||
0b19b281 | 1320 | ** Syntax parsing changes |
dfdb4cad | 1321 | |
0b19b281 | 1322 | *** New variable `syntax-propertize-function'. |
04e2ce72 | 1323 | This replaces `font-lock-syntactic-keywords' which is now obsolete. |
cf38dd42 SM |
1324 | This allows syntax-table properties to be set independently from font-lock: |
1325 | just call syntax-propertize to make sure the text is propertized. | |
1326 | Together with this new variable come a new hook | |
1327 | syntax-propertize-extend-region-functions, as well as two helper functions: | |
1328 | syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords | |
1329 | as-is; and syntax-propertize-rules which provides a new way to specify | |
1330 | syntactic rules. | |
dfdb4cad | 1331 | |
0b19b281 | 1332 | *** Syntax tables support a new "comment style c" additionally to style b. |
a2e5caf7 | 1333 | |
7d301ae6 | 1334 | ** New hook `post-self-insert-hook', run after `self-insert-command'. |
041d709f | 1335 | |
4e2db1fe | 1336 | ** frame-local variables cannot be let-bound any more. |
041d709f | 1337 | |
15de15c6 | 1338 | ** Major and minor mode changes |
dfdb4cad | 1339 | |
0b19b281 CY |
1340 | *** `set-auto-mode' now respects mode: local variables at the end of files, |
1341 | as well as those in the -*- line. | |
dfdb4cad | 1342 | |
15de15c6 CY |
1343 | *** `prog-mode' is a new major mode from which programming modes |
1344 | should be derived. | |
dfdb4cad | 1345 | |
15de15c6 CY |
1346 | **** `prog-mode-hook' can be used to enable features for programming |
1347 | modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable | |
1348 | on-the-fly spell checking for comments and strings. | |
dfdb4cad | 1349 | |
15de15c6 CY |
1350 | *** New hook `change-major-mode-after-body-hook', run by |
1351 | `run-mode-hooks' just before any other mode hooks. | |
dfdb4cad | 1352 | |
7a9a2fc6 GM |
1353 | *** Enabled globalized minor modes can be disabled in specific major modes. |
1354 | If the global mode is global-FOO-mode, then run (FOO-mode -1) in the | |
1355 | major mode's hook, where FOO-mode toggles the mode on a per-buffer basis. | |
dfdb4cad | 1356 | |
feb8a83a | 1357 | *** `define-minor-mode' accepts new keywords :variable, :after-hook. |
f44379e7 | 1358 | |
7d301ae6 CY |
1359 | ** File-handling changes |
1360 | ||
7d301ae6 | 1361 | *** `delete-file' and `delete-directory' now accept optional arg TRASH. |
f1a5d776 CY |
1362 | Trashing is performed if TRASH and `delete-by-moving-to-trash' are |
1363 | both non-nil. Interactively, TRASH defaults to t, unless a prefix | |
1364 | argument is supplied (see Trash changes, above). | |
53967e09 | 1365 | |
7d301ae6 | 1366 | *** New file predicates: `file-equal-p', `file-in-directory-p'. |
ec70a47d | 1367 | |
4039c786 CY |
1368 | ** Tool-bars can display separators. |
1369 | Tool-bar separators are handled like menu separators in menu-bar maps, | |
94975270 | 1370 | i.e. via menu entries of the form `(menu-item "--")'. |
9317e499 | 1371 | |
00fe2df1 JL |
1372 | ** Image API |
1373 | ||
18af70d0 CY |
1374 | *** Animated images support (currently animated gifs only). |
1375 | ||
1376 | **** `image-animated-p' returns non-nil if an image can be animated. | |
1377 | ||
1378 | **** `image-animate' animates a supplied image spec. | |
1379 | ||
1380 | **** `image-animate-timer' returns the timer object for an image that | |
1381 | is being animated. | |
00fe2df1 | 1382 | |
7cb76fe0 GM |
1383 | *** `image-extension-data' has been renamed to `image-metadata'. |
1384 | The old name is an obsolete alias to the new one. | |
1546c559 | 1385 | |
b4ac6e8c GM |
1386 | *** Image mode can view any image type that ImageMagick supports. |
1387 | This requires Emacs to be built with ImageMagick support. | |
7d301ae6 CY |
1388 | |
1389 | **** New function `imagemagick-types', defined if ImageMagick support | |
1390 | is enabled, returns a list of image file extensions that your | |
1391 | ImageMagick installation supports. | |
1392 | ||
1393 | **** New function `imagemagick-register-types' enables ImageMagick | |
1394 | image types in Image mode and in `create-image' and other helper | |
1395 | functions. | |
1396 | ||
1397 | **** New option `imagemagick-types-inhibit' excludes certain | |
1398 | ImageMagick image types from `imagemagick-register-types'. | |
1399 | ||
7d301ae6 CY |
1400 | **** With ImageMagick support, there are extra Image mode commands to |
1401 | resize and rotate images: `image-transform-fit-to-height', | |
1402 | `image-transform-fit-to-width', `image-transform-set-rotation', and | |
1403 | `image-transform-set-scale'. | |
041d709f | 1404 | |
7d301ae6 CY |
1405 | ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and |
1406 | passes it to the mail user agent function. This argument specifies an | |
1407 | action for returning to the caller after finishing with the mail. For | |
1408 | example, this is used by Rmail to optionally delete a mail window. | |
b4ac6e8c | 1409 | |
71c17aec | 1410 | ** XML and HTML parsing |
483ab230 CY |
1411 | If Emacs is compiled with libxml2 support, there are two new |
1412 | functions: `libxml-parse-html-region' (which parses "real world" HTML) | |
1413 | and `libxml-parse-xml-region' (which parses XML). Both return an | |
1414 | Emacs Lisp parse tree. | |
4b9832a6 | 1415 | |
7d301ae6 | 1416 | ** Networking and encryption changes |
e2574f2c | 1417 | |
7d301ae6 CY |
1418 | *** `open-network-stream' can now be used to open an encrypted stream. |
1419 | It now accepts an optional `:type' parameter for initiating a TLS | |
1420 | connection, directly or via STARTTLS. To do STARTTLS, additional | |
1421 | parameters (`:end-of-command', `:success', `:capabilities-command') | |
1422 | must also be supplied. | |
1423 | ||
1424 | *** New library gnutls.el. | |
dfdb4cad CY |
1425 | The new function `gnutls-available-p' returns non-nil if Emacs is |
1426 | built with GnuTLS support. The main entry points are | |
1427 | `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use | |
1428 | these functions through `open-network-stream', because that can | |
7d301ae6 CY |
1429 | upgrade connections through STARTTLS opportunistically or use plain |
1430 | SSL, depending on your needs. For debugging, set `gnutls-log-level' | |
1431 | greater than 0. | |
1432 | ||
7d301ae6 CY |
1433 | *** New primitive `secure-hash' that supports many secure hash algorithms: |
1434 | md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library | |
1435 | sha1.el has been removed. The `sha1' feature is provided by default. | |
71c17aec | 1436 | |
a6020335 MH |
1437 | ** Isearch |
1438 | ||
1439 | *** New hook `isearch-update-post-hook' that runs in `isearch-update'. | |
1440 | ||
9326ba26 CY |
1441 | ** Progress reporters can now "spin". |
1442 | The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can | |
1443 | now be nil, or omitted. This makes a "non-numeric" reporter. Each | |
1444 | time you call `progress-reporter-update' on that progress reporter, | |
1445 | with a nil or omitted VALUE argument, the reporter message is | |
1446 | displayed with a "spinning bar". | |
1447 | ||
3e214b50 JB |
1448 | ** New variable `revert-buffer-in-progress-p' is true while a buffer is |
1449 | being reverted, even if the buffer has a local `revert-buffer-function'. | |
1450 | ||
001bf877 GM |
1451 | ** New variables `delayed-warnings-list' and `delayed-warnings-hook'. |
1452 | If delayed-warnings-list is non-nil, the command loop calls | |
7d301ae6 CY |
1453 | `delayed-warnings-hook' after `post-command-hook'. At present, this |
1454 | is only used by Emacs on some platforms to display warnings during | |
1455 | startup, which might otherwise not be noticed. This uses the | |
1456 | functions `display-delayed-warnings' and `collapse-delayed-warnings'. | |
001bf877 | 1457 | |
6420d28b CY |
1458 | ** rx.el has a new `group-n' construct for explicitly numbered groups. |
1459 | ||
dac86404 GM |
1460 | ** New function `make-composed-keymap' that constructs a new keymap |
1461 | from multiple input maps. You can use this to make a keymap that | |
1462 | inherits from multiple maps, eg: | |
1463 | (set-keymap-parent newmap (make-composed-keymap othermap parent)) | |
43dc9f5b | 1464 | |
c8f6ec5c GM |
1465 | ** New function `string-prefix-p'. |
1466 | (This was actually added in Emacs 23.2 but was not advertised at the time.) | |
1467 | ||
27f7ef2f | 1468 | ** New reader macro ## that stands for the empty symbol. |
43dc9f5b AS |
1469 | This means that the empty symbol can now be read back. Also, #: by itself |
1470 | (when not immediately followed by a possible symbol character) stands for | |
1471 | an empty uninterned symbol. | |
041d709f | 1472 | |
fead402d CY |
1473 | ** New math functions `isnan', `copysign', `frexp', `ldexp'. |
1474 | ||
7d301ae6 | 1475 | ** The following functions and variables are obsolete: |
041d709f | 1476 | |
05f77e38 GM |
1477 | *** `tooltip-use-echo-area' is obsolete. |
1478 | Rather than setting this to t, disable Tooltip mode instead. | |
1479 | ||
041d709f CY |
1480 | *** buffer-substring-filters is obsolete. |
1481 | Use `filter-buffer-substring-functions' instead. | |
1482 | ||
1483 | *** `byte-compile-disable-print-circle' is obsolete. | |
1484 | ||
1485 | *** `deferred-action-list' and `deferred-action-function' are obsolete. | |
f160676e GM |
1486 | Use `post-command-hook' instead. |
1487 | ||
67e729a5 CY |
1488 | *** `font-lock-maximum-size' is obsolete. |
1489 | ||
eb199145 GM |
1490 | \f |
1491 | * Changes in Emacs 24.1 on non-free operating systems | |
d53a60a6 | 1492 | |
7a22e700 | 1493 | ** On MS Windows, Emacs warns when using the obsolete init file _emacs, |
a2f0118c GM |
1494 | and also when HOME is set to C:\ by default. |
1495 | ||
7a22e700 | 1496 | ** New configure.bat options |
04779484 | 1497 | |
7a22e700 | 1498 | *** --enable-checking builds Emacs with extra runtime checks. |
e3aef5c6 | 1499 | |
7a22e700 | 1500 | *** --distfiles specifies files to be included in binary distribution. |
e2574f2c | 1501 | |
7a22e700 OK |
1502 | *** --without-gnutls disables automatic GnuTLS detection. |
1503 | ||
a0d363f4 | 1504 | *** --lib for general library linkage, works with the USER_LIBS build variable. |
e2574f2c | 1505 | |
0a19a6f8 | 1506 | ** New make target `dist' to create binary distribution for MS Windows. |
e3aef5c6 | 1507 | |
1f5e1a16 GM |
1508 | ** The Lisp function `w32-default-color-map' is now obsolete. |
1509 | (It is only used internally in the Emacs C code.) | |
5430d399 | 1510 | |
1f5e1a16 GM |
1511 | ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but |
1512 | reappear on mouse-over. (Requires OS X 10.6 or later.) | |
04e2ce72 | 1513 | |
ad7c802c CY |
1514 | ** On Mac OS X, dragging a file into Emacs visits the file, like on |
1515 | other platforms, rather than inserting its contents into the buffer. | |
1516 | ||
05197f40 | 1517 | \f |
a933dad1 | 1518 | ---------------------------------------------------------------------- |
5b87ad55 | 1519 | This file is part of GNU Emacs. |
a933dad1 | 1520 | |
ab73e885 | 1521 | GNU Emacs is free software: you can redistribute it and/or modify |
5b87ad55 | 1522 | it under the terms of the GNU General Public License as published by |
ab73e885 GM |
1523 | the Free Software Foundation, either version 3 of the License, or |
1524 | (at your option) any later version. | |
5b87ad55 GM |
1525 | |
1526 | GNU Emacs is distributed in the hope that it will be useful, | |
1527 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
1528 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
1529 | GNU General Public License for more details. | |
a933dad1 | 1530 | |
5b87ad55 | 1531 | You should have received a copy of the GNU General Public License |
ab73e885 | 1532 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
a933dad1 | 1533 | |
05197f40 | 1534 | \f |
a933dad1 DL |
1535 | Local variables: |
1536 | mode: outline | |
1537 | paragraph-separate: "[ \f]*$" | |
1538 | end: |