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29b7722a | 1 | GNU Emacs NEWS -- history of user-visible changes. |
5b87ad55 | 2 | |
dcb8ac09 | 3 | Copyright (C) 2007, 2008 Free Software Foundation, Inc. |
5b87ad55 | 4 | See the end of the file for license conditions. |
a933dad1 | 5 | |
3f7194ed | 6 | Please send Emacs bug reports to emacs-pretest-bug@gnu.org. |
9a21d88b KS |
7 | If possible, use M-x report-emacs-bug. |
8 | ||
0bfd685e | 9 | This file is about changes in Emacs version 23. |
9a21d88b | 10 | |
0bfd685e GM |
11 | See files NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17 |
12 | 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 GM |
16 | |
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 | ||
05197f40 | 23 | \f |
9c576ea0 KS |
24 | * About external Lisp packages |
25 | ||
9c576ea0 | 26 | \f |
0bfd685e | 27 | * Installation Changes in Emacs 23.1 |
c58dccad | 28 | |
3f7194ed | 29 | ** The default X toolkit is now Gtk+, rather than Lucid. |
09e18d03 CY |
30 | The configure option `--with-gtk' has been removed. Gtk is now the |
31 | default toolkit, but you can use --with-x-toolkit=gtk if necessary. | |
3f7194ed | 32 | |
09e18d03 CY |
33 | ** New font code. |
34 | Fonts are handled by new code capable of dealing with multiple font | |
35 | backends. This requires the freetype and fontconfig libraries | |
2b7a2553 | 36 | |
09e18d03 CY |
37 | *** Emacs now accepts font names supplied in the fontconfig format |
38 | (e.g. "monospace-12:bold") and GTK format (e.g. "Monospace Bold 12"). | |
1abe3a1e | 39 | |
09e18d03 CY |
40 | *** Added support for local fonts (fonts installed on the machine |
41 | where Emacs is running). | |
42 | ||
43 | *** Added support for the Xft library for antialiasing. | |
44 | ||
45 | *** Added support for the otf library for complex text layout by | |
46 | OpenType fonts. | |
47 | ||
48 | *** Added support for the m17n library for text shaping. | |
15f02f65 | 49 | |
09e18d03 CY |
50 | ** Changes to image support |
51 | ||
52 | *** configure now checks for libgif before libungif when searching for | |
9d3cc9b2 | 53 | a GIF library. |
b5ac89f8 | 54 | |
09e18d03 CY |
55 | *** Emacs now supports the SVG image format through librsvg2. |
56 | ||
57 | ** The Mac Carbon port is no longer supported. | |
58 | Instead, use... [FIXME what?] | |
36e625ec | 59 | |
09e18d03 CY |
60 | ** The new configuration option "--with-dbus" enables D-Bus language |
61 | bindings for Emacs. | |
07e5c0b0 | 62 | |
bb9f7948 EZ |
63 | ** Support for many obsolete platforms has been removed. |
64 | See the list at the end of etc/MACHINES for details. | |
65 | ||
09e18d03 CY |
66 | *** Support for systems without alloca has been removed. |
67 | ||
68 | *** Support for Sun windows has been removed. | |
69 | ||
48a8be40 GM |
70 | ** The `emacstool' utility has been removed. |
71 | ||
a46ee55c GM |
72 | ** The configure options `--with-gcc', `--without-gcc' have been removed. |
73 | Configure will use gcc by default. Set the CC environment variable if | |
74 | you need control over which C compiler is used. | |
75 | ||
09e18d03 CY |
76 | ** The refcards are now shipped as PDF files. |
77 | ||
78 | ** Emacs 23 comes with a new set of default icons. | |
79 | Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png. | |
80 | The Emacs 22 icon is available as `emacs22.png' in the same location. | |
4e5cdb4f | 81 | \f |
6dadd99f NR |
82 | * Changes in Emacs 23.1 |
83 | ||
09e18d03 | 84 | ** Improved X Window System support |
ba5ff07b | 85 | |
09e18d03 CY |
86 | *** Emacs now supports using both X displays and ttys in one session. |
87 | With an Emacs server active (M-x server-start), `emacsclient -t' | |
88 | creates a tty frame connected to the running emacs server. You can | |
89 | use any number of different ttys. `emacsclient -c' creates a new X11 | |
90 | frame on the current $DISPLAY (or a tty frame if $DISPLAY is not set). | |
780d7bb9 RS |
91 | |
92 | You can test for the presence of this feature in your Lisp code by | |
93 | testing for the `multi-tty' feature. | |
94 | ||
09e18d03 CY |
95 | **** Emacsclient can now open new terminal frames. |
96 | Now, the default behavior is to open a new Emacs frame by default. | |
97 | Use the -c option to get the old behavior of opening files in the | |
98 | currently selected Emacs frame. | |
d82c3d44 | 99 | |
09e18d03 CY |
100 | *** The new command close-display-connection closes a connection to a |
101 | remote display. | |
d82c3d44 | 102 | |
09e18d03 CY |
103 | *** Emacs now supports the XEmbed specification. |
104 | You can embed Emacs in another application on X11. The new command line | |
105 | option --parent-id is used to pass the parent window id to Emacs. See | |
7b476dbe JD |
106 | http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html |
107 | for details about XEmbed. | |
108 | ||
09e18d03 CY |
109 | *** Emacs can now set the frame opacity. |
110 | The opacity of a frame can be controlled by setting the `alpha' frame | |
111 | parameter. This only takes effect on a compositing window manager for | |
112 | the X Window System, such as Compiz, Beryl and Compiz Fusion. | |
55f9bad5 GM |
113 | |
114 | The alpha parameter should be an integer between 0 (transparent) and | |
09e18d03 CY |
115 | 100 (opaque), or a float number between 0.0 and 1.0. It can also be a |
116 | cons cell (ACTIVE . INACTIVE), where ACTIVE is the opacity of an | |
117 | active frame and INACTIVE is the opactity of non-active frames. | |
55f9bad5 | 118 | |
09e18d03 CY |
119 | The variable `frame-alpha-lower-limit' defines a lower bound for the |
120 | opacity; the default is 20. | |
55f9bad5 | 121 | |
09e18d03 | 122 | ** Internationalization changes |
fec8ef06 | 123 | |
09e18d03 CY |
124 | *** The Emacs character set is now a superset of Unicode. |
125 | (It has about four times the code space, which should be plenty). | |
0a963185 | 126 | |
09e18d03 CY |
127 | The internal encoding used for buffers and strings is now |
128 | Unicode-based and called `utf-8-emacs'. This encoding is backwards | |
129 | compatible with Unicode's UTF-8 encoding. The internal encoding | |
130 | previously used by Emacs, `emacs-mule', is still available. | |
6dadd99f | 131 | |
09e18d03 CY |
132 | During byte-compilation, Emacs 23 uses `utf-8-emacs' to write files. |
133 | As a result, byte-compiled files containing non-ASCII characters can't | |
134 | be read by earlier versions of Emacs. Files compiled by Emacs 20, 21, | |
135 | or 22 are loaded correctly as emacs-mule (whether or not they contain | |
136 | multibyte characters). This takes somewhat more time, so it may be | |
137 | worth recompiling existing .elc files which don't need to be shared | |
138 | with older Emacsen. | |
3ae459e5 | 139 | |
09e18d03 | 140 | *** There are new coding systems/aliases; see M-x list-coding-systems. |
c2e8590b | 141 | |
09e18d03 CY |
142 | *** There is a new charset implementation with many new charsets. |
143 | See M-x list-character-sets. New charsets can be defined conveniently | |
144 | as tables of unicodes. | |
1abe3a1e | 145 | |
09e18d03 CY |
146 | **** The dimension of a charset is now 1, 2, 3, or 4, and the size of |
147 | each dimension is no longer limited to 94 or 96. | |
eb28688c | 148 | |
09e18d03 CY |
149 | **** A dynamic charset priority list is used to infer the charset of |
150 | characters for display. | |
6c5d503f | 151 | |
09e18d03 CY |
152 | *** There are new language environments for Chinese-GBK, |
153 | Chinese-GB18030, Khmer, Bengali, Punjabi, Gujarati, Oriya, Telugu, | |
154 | Sinhala, and TaiViet. | |
c9447ae1 | 155 | |
09e18d03 CY |
156 | *** The minor modes unify-8859-on-encoding-mode and |
157 | unify-8859-on-decoding-mode are obsolete. | |
d466e9fc | 158 | |
09e18d03 CY |
159 | ** Emacs now supports serial port access on GNU/Linux, Unix, and |
160 | Windows. `serial-term' starts an interactive terminal, | |
161 | `make-serial-process' and `serial-process-configure' provide a Lisp | |
162 | interface. The serial port can be configured at runtime with the | |
163 | mode-line mouse menu. | |
6c5d503f | 164 | |
09e18d03 | 165 | ** Menu Bar changes |
aff2ba04 | 166 | |
09e18d03 CY |
167 | *** In the Options menu, the "Set Default Font" item applies the |
168 | selected font to the `default' face on all frames, not just the | |
169 | current frame. Furthermore, if Emacs is compiled with both GTK and | |
170 | Fontconfig support, the "Set Default Font" item uses the GTK font | |
171 | selection dialog instead of an Emacs pop-up menu. | |
c4c9b6f9 | 172 | |
09e18d03 CY |
173 | *** The font setting chosen by "Set Default Font" is saved if the |
174 | "Save Options" item is used. | |
1b21ee06 | 175 | |
09e18d03 | 176 | *** The Options menu contains a new entry to turn on Longlines mode. |
5c4a15b3 | 177 | |
09e18d03 | 178 | ** Mode-line changes |
c4c9b6f9 | 179 | |
09e18d03 CY |
180 | *** The mode-line displays a `@', instead of `-', if the |
181 | default-directory for the current buffer is on a remote machine. | |
c4c9b6f9 | 182 | |
09e18d03 CY |
183 | *** The mode-line displays a mode menu when mouse-1 is clicked on a |
184 | minor mode, in the same way as it already did for major modes. | |
b3cf10d7 | 185 | |
09e18d03 CY |
186 | *** The `mode-line-emphasis' face is used to highlight certain |
187 | mode-line information (e.g. waiting for a VC command to finish). | |
d82c3d44 | 188 | |
09e18d03 CY |
189 | ** Directory-local variables can now be defined. |
190 | By default, Emacs looks in .dir-settings.el for directory-local | |
191 | variables. For more information, see `set-directory-project' and | |
192 | `define-project-bindings'. | |
307f3501 | 193 | |
6dadd99f | 194 | \f |
0bfd685e | 195 | * Startup Changes in Emacs 23.1 |
21f7b9d8 | 196 | |
3063e326 JL |
197 | ** The option `inhibit-startup-screen' (with aliases to old names |
198 | `inhibit-splash-screen' and `inhibit-startup-message') doesn't inhibit | |
199 | display of the initial message in the *scratch* buffer. If you don't | |
200 | want to display the initial message in the *scratch* buffer at startup, | |
201 | you can set the option `initial-scratch-message' to nil. | |
202 | ||
56e1896b JL |
203 | ** New user option `initial-buffer-choice' specifies what to display |
204 | after starting Emacs: startup screen, *scratch* buffer, visiting a | |
205 | file or directory. | |
206 | ||
aa5310e4 DK |
207 | ** New alias `argv' for `command-line-args-left' |
208 | This is a convenience alias, so that one can write `(pop argv)' | |
209 | inside of --eval command line arguments in order to access | |
210 | following arguments. | |
f8fd7ed3 GM |
211 | |
212 | ** The abbrev file is no longer read at startup in batch mode. | |
c44da964 | 213 | \f |
0bfd685e | 214 | * Incompatible Editing Changes in Emacs 23.1 |
b58cb59f | 215 | |
117907d4 JL |
216 | +++ |
217 | ** In Dired-x, all command guesses for ! are now added to the default | |
218 | list accessible by M-n instead of pushing all guesses temporarily into | |
219 | the history list. | |
220 | ||
e405fa5f | 221 | ** The following input methods were removed in Emacs 22.2, but this was |
9a930d75 | 222 | not advertised: danish-alt-postfix, esperanto-alt-postfix, |
e405fa5f RS |
223 | finnish-alt-postfix, german-alt-postfix, icelandic-alt-postfix, |
224 | norwegian-alt-postfix, scandinavian-alt-postfix, spanish-alt-postfix, | |
225 | and swedish-alt-postfix. Use the versions without "alt-", which are | |
226 | identical. | |
0b0914ae | 227 | |
406c0f12 | 228 | \f |
0bfd685e | 229 | * Editing Changes in Emacs 23.1 |
406c0f12 | 230 | |
09e18d03 CY |
231 | ** C-x C-c now invokes `save-buffers-kill-terminal', and C-z now |
232 | invokes `suspend-frame'. This change is for compatibility with the | |
233 | new multi-tty support (see `Improved X Window System support' above). | |
3ae459e5 | 234 | |
09e18d03 | 235 | ** Mark changes |
59b5d020 | 236 | +++ |
3ae459e5 | 237 | *** Transient Mark mode is now on by default. |
3ae459e5 CY |
238 | +++ |
239 | *** mark-even-if-inactive now defaults to t | |
3ae459e5 CY |
240 | +++ |
241 | *** When Transient Mark mode is on, C-SPC C-SPC pushes a mark without activating it. | |
1ac03a31 | 242 | +++ |
3ae459e5 CY |
243 | *** When Transient Mark mode is on, M-q now fills the region if the |
244 | region is active. Otherwise, it fills the current paragraph. | |
ecde850a | 245 | +++ |
3ae459e5 CY |
246 | *** When Transient Mark mode is on, M-$ now checks spelling of the |
247 | region if the region is active. Otherwise, it checks spelling of the | |
dc868f13 | 248 | word at point. |
3ae459e5 CY |
249 | *** When Transient Mark mode is on, TAB now indents the region if the |
250 | region is active. | |
3ae459e5 CY |
251 | *** `use-empty-active-region' controls whether an empty active region |
252 | in Transient Mark mode should make commands operate on that empty | |
253 | region. | |
254 | ||
255 | ** Temporarily active regions | |
256 | ||
257 | *** The new variable shift-select-mode, non-nil by default, controls | |
258 | shift-selection. When Shift Select mode is on, shift-translated | |
259 | motion keys (e.g. S-left and S-down) activate and extend a temporary | |
260 | region, similar to mouse-selection. | |
261 | ||
262 | *** Temporarily active regions, created using shift-selection or | |
263 | mouse-selection, are not necessarily deactivated in the next command. | |
264 | They are only deactivated after point motion commands that are not | |
265 | shift-translated, or after commands that would ordinarily deactivate | |
266 | the mark in Transient Mark mode (e.g., any command that modifies the | |
267 | buffer). | |
268 | ||
505d8756 | 269 | ** Minibuffer changes |
297b8ccd | 270 | |
09e18d03 CY |
271 | *** Operations like C-x b and C-x C-f, which use switch-to-buffer, do |
272 | not fail any more when used in a minibuffer or a dedicated window. | |
273 | Instead, they fallback on using pop-to-buffer, which will use some | |
274 | other window. | |
23d2b215 | 275 | |
d47a29c1 JL |
276 | *** When M-n in the minibuffer reaches the end of the list of defaults, |
277 | it adds the completion list to the end, so next M-n continues putting | |
278 | completion items to the minibuffer. The same principle applies to | |
279 | incremental search commands as well: C-s or C-M-s starts searching | |
280 | the default values and after the end of defaults they continue | |
281 | searching minibuffer completion items. | |
f3ed2b83 | 282 | |
09e18d03 CY |
283 | *** Minibuffer input of shell commands now comes with completion. |
284 | ||
285 | *** In the `C-x d' (Dired) prompt, typing M-n gives the visited file | |
286 | name of the current buffer. | |
dc2f6c05 | 287 | |
09e18d03 CY |
288 | *** In the M-! (shell-command) prompt, M-n provides some default commands. |
289 | These are guessed using the file extension of the current file, based | |
290 | on the file-handlers specified in the operating system's `mailcap' | |
291 | file. The ! command in Dired (dired-do-shell-command) works | |
292 | similarly, using the file displayed on the current line. | |
117907d4 JL |
293 | |
294 | *** A list of regexp default values is available via M-n for `occur', | |
295 | `keep-lines', `flush-lines' and `how-many'. This list includes the active | |
296 | region in transient-mark-mode, the word under the cursor, the last isearch | |
297 | regexp, the last isearch string and the last replacement regexp. | |
298 | ||
297b8ccd JL |
299 | *** isearch started in the minibuffer searches in the minibuffer history. |
300 | Reverse isearch commands (C-r, C-M-r) search in previous minibuffer | |
301 | history elements, and forward isearch commands (C-s, C-M-s) search in | |
302 | next history elements. When the reverse search reaches the first history | |
303 | element, it wraps to the last history element, and the forward search | |
304 | wraps to the first history element. When the search is terminated, the | |
305 | history element containing the search string becomes the current. | |
306 | ||
505d8756 GM |
307 | ** Face changes |
308 | ||
309 | *** The new function `face-all-attributes' returns an alist describing | |
310 | all the basic attributes of a given face. | |
311 | ||
d2d160bd CY |
312 | *** S-down-mouse-1 now pops up a menu for changing the default font |
313 | and text size of the default face in the current buffer. The face is | |
314 | changed via face remapping (see below). | |
315 | ||
f20186fd GM |
316 | *** FIXME face-remap |
317 | ||
09e18d03 | 318 | ** Primary selection changes |
0091c67e | 319 | |
09e18d03 CY |
320 | *** If `select-active-regions' is t, setting the mark automatically |
321 | makes the new region into the primary selection (for interaction with | |
322 | other window applications). If you enable this, you might want to | |
323 | bind `mouse-yank-primary' to Mouse-2. | |
c160dc76 | 324 | |
09e18d03 CY |
325 | *** You can disable kill ring commands from accessing the primary selection |
326 | by setting `x-select-enable-primary' to nil. | |
2e282009 | 327 | |
09e18d03 | 328 | ** Completion changes |
1816bda7 | 329 | |
09e18d03 CY |
330 | *** `completion-styles' can be customized to choose your favorite |
331 | completion style. | |
c06c430f | 332 | |
09e18d03 | 333 | *** The default completion styles include a form of partial-completion. |
c06c430f | 334 | |
09e18d03 CY |
335 | *** The new command `minibuffer-force-complete' chooses one of the |
336 | possible completions, rather than stopping at the common prefix. | |
a2e0b5dd | 337 | |
09e18d03 CY |
338 | *** `completion-auto-help' can be set to `lazy' to list the completions only |
339 | if you repeat the completion. This was already supported in | |
340 | `partial-completion-mode'. | |
a0818148 | 341 | |
85b1de32 CY |
342 | ** Continuation lines can be wrapped at word boundaries |
343 | (word-wrapping) instead of the right window edge. The new per-buffer | |
344 | variable `word-wrap', if non-nil turns on word-wrapping. Word | |
345 | wrapping does not take place if continuation lines are not shown, | |
346 | e.g. if truncate-lines is non-nil. | |
347 | ||
463c6766 CY |
348 | ** Window management changes |
349 | ||
350 | *** truncate-partial-width-windows now accepts integer values, which | |
351 | specify a minimum window width for partial-width windows, below which | |
352 | lines are truncated. The default has been changed to 30. | |
353 | ||
354 | *** The new command balance-windows-area balances windows both | |
355 | vertically and horizontally. | |
356 | ||
357 | ** Continuation lines can be wrapped at word boundaries | |
358 | (word-wrapping) instead of the right window edge. The new per-buffer | |
359 | variable `word-wrap', if non-nil turns on word-wrapping. Word | |
360 | wrapping does not take place if continuation lines are not shown, | |
361 | e.g. if truncate-lines is non-nil. | |
362 | ||
09e18d03 | 363 | ** Miscellaneous changes: |
3f7194ed | 364 | |
09e18d03 CY |
365 | *** C-l is bound to the new command recenter-top-bottom, rather than recenter. |
366 | This moves the current line to window center, top and bottom on | |
367 | successive invokations. | |
15f3eb73 | 368 | |
09e18d03 | 369 | *** scroll-preserve-screen-position also preserves the column position. |
c154c0be | 370 | |
09e18d03 CY |
371 | *** If `yank-pop-change-selection' is t, rotating the kill ring also |
372 | updates the selection or clipboard to the current yank, just as M-w | |
373 | would do so with the text it copies to the kill ring. | |
374 | ||
375 | +++ | |
376 | *** C-M-% now shows replacement as it would look in the buffer, with | |
377 | `\N' and `\&' substituted according to the match. Old behavior can be | |
378 | restored by customizing `query-replace-show-replacement'. | |
379 | ||
380 | *** The command shell prompts for the default directory, when it is | |
381 | called with a prefix and the default directory is a remote file name. | |
382 | This is because some file name handlers (like ange-ftp) are not able to | |
383 | run processes remotely. | |
384 | ||
385 | *** The new command kill-matching-buffers kills buffers whose name | |
386 | matches a regexp. | |
387 | ||
388 | *** The new commands `pp-macroexpand-expression' and `pp-macroexpand-last-sexp' | |
389 | pretty-print macro expansions. | |
8f377a4b | 390 | |
09e18d03 CY |
391 | \f |
392 | * New Modes and Packages in Emacs 23.1 | |
e11910e2 | 393 | |
09e18d03 CY |
394 | ** FIXME add details of new packages imported from lisp/gnus. |
395 | [Maybe some information from doc/misc/gnus-coding.texi can be reused] | |
c06c430f | 396 | |
e11910e2 GM |
397 | ** Auto Composition Mode is a minor mode that composes characters |
398 | automatically when they are displayed. It is globally on by default. | |
399 | It uses `auto-composition-function' (default `auto-compose-chars'). | |
400 | ||
09e18d03 | 401 | ** Bubbles, a new game, is similar to SameGame. |
f6b26818 | 402 | |
7ef39c6e GM |
403 | ** bug-reference.el provides clickable links to bug reports. |
404 | ||
09e18d03 | 405 | ** copyright.el adds utilities for specifying copyright holders' names. |
61d244ca | 406 | |
09e18d03 CY |
407 | *** Only copyright lines with holders matching copyright-names-regexp |
408 | will be considered for update. | |
409 | ||
410 | *** The Copyright package looks for copyright at the end of the buffer | |
411 | if `copyright-at-end-flag' is non-nil (change-log-mode sets this). | |
412 | ||
413 | ** dbus.el provides D-Bus language bindings. | |
414 | D-Bus is an inter-process communication mechanism for applications | |
415 | residing on the same host, based on messages. See the manual for | |
416 | details. | |
417 | ||
418 | ** Doc View Mode supports viewing of PDF, PostScript and DVI documents | |
419 | inside an Emacs buffer. It works by converting the document to a set | |
420 | of PNG images first. One can also search for a regular expression in | |
421 | the document. The commentary in doc-view.el explains its usage. | |
422 | ||
423 | ** EasyPG is an all-in-one GnuPG interface. | |
424 | It includes GnuPG keyring browser, cryptographic operations on regions | |
425 | and files, and automatic encryption of *.gpg files. For details, see | |
426 | the EasyPG Assistant User's Manual. | |
427 | ||
428 | ** json.el is a library for parsing and generating JSON | |
429 | (JavaScript Object Notation), a lightweight data-interchange format. | |
430 | ||
431 | ** linum.el is a new minor mode to display line numbers for the | |
432 | current buffer. | |
433 | ||
434 | ** minibuffer-indicate-depth-mode shows the minibuffer depth in the prompt. | |
435 | ||
436 | ** nXML Mode | |
437 | This is a new mode for editing XML documents. It allows a schema to | |
438 | be associated with the XML document being edited, using Relax NG as | |
439 | the schema language. The schema is used to provide two key features: | |
440 | ||
441 | *** Continuous validation. nXML validates as you type, highlighting | |
442 | any invalid parts of your document. | |
443 | ||
444 | *** Completion. nXML can assist you in entering an element name, | |
445 | attribute name or data value by using information about what is | |
446 | allowed by the schema in that context. | |
447 | ||
448 | ** proced.el provides a Dired-like interface for operating on processes. | |
449 | Proced makes an Emacs buffer containing a listing of the current | |
450 | processes (using ps(1)). You can use the normal Emacs commands to | |
451 | move around in this buffer, and special Proced commands to operate on | |
452 | the processes listed. | |
453 | ||
454 | ** Remember Mode is a mode for jotting down things to remember. | |
455 | Notes can be saved to a Diary file. For details, see the Remember | |
456 | Manual. | |
457 | ||
458 | ** RST mode is a major mode for editing ReSTructured-Text files. | |
c2d0b538 | 459 | |
c934813f GM |
460 | ** A new `whitespace' package has been installed, and the pre-existing one |
461 | renamed to `old-whitespace'. | |
462 | [FIXME someone explain why this is good, if it is...] | |
463 | ||
09e18d03 CY |
464 | ** zeroconf.el offers service discovery and service publishing |
465 | interfaces according to the zeroconf specification. It communicates | |
466 | with Avahi, a zeroconf implementation, via D-Bus messages on systems | |
467 | which have installed this software. | |
468 | ||
469 | \f | |
470 | * Changes in Specialized Modes and Packages in Emacs 23.1 | |
471 | ||
472 | ** Abbrev has been rewritten in Elisp and extended with more flexibility. | |
e047f448 | 473 | *** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put, |
a3709a8c | 474 | abbrev-table-p, abbrev-insert, abbrev-table-menu. |
e047f448 SM |
475 | *** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'. |
476 | *** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take | |
477 | extra arguments for arbitrary properties. | |
478 | *** New variable `abbrev-minor-mode-table-alist'. | |
479 | *** `local-abbrev-table' can hold a list of abbrev-tables. | |
480 | *** Abbrevs have now the following special properties: | |
79415279 | 481 | `:count', `:system', `:enable-function', `:case-fixed'. |
e047f448 SM |
482 | *** Abbrev-tables have now the following special properties: |
483 | `:parents', `:case-fixed', `:enable-function', `:regexp', | |
484 | `abbrev-table-modiff'. | |
485 | ||
09e18d03 CY |
486 | ** Apropos |
487 | *** `apropos-library' describes the elements defined in a given library. | |
488 | *** Set `apropos-compact-layout' is you want a more compact (but wider) layout. | |
0253fffa | 489 | |
09e18d03 | 490 | ** Archive Mode has basic support to browse Rar archives. |
0253fffa | 491 | |
09e18d03 | 492 | ** BibTeX mode |
bafbec39 | 493 | |
09e18d03 | 494 | *** New command `bibtex-initialize' (re)initializes BibTeX buffers. |
bafbec39 | 495 | |
09e18d03 CY |
496 | *** New `bibtex-entry-format' options `whitespace', `braces', and |
497 | `string', disabled by default. | |
12bbb989 | 498 | |
09e18d03 CY |
499 | *** New variable `bibtex-cite-matcher-alist' contains rules to |
500 | identify cited keys in BibTeX entries, used by `bibtex-find-crossref'. | |
9097e8af | 501 | |
09e18d03 | 502 | *** Command `bibtex-url' allows multiple URLs per entry. |
4c24d241 | 503 | |
09e18d03 | 504 | ** Calendar and diary |
320bc739 | 505 | |
09e18d03 CY |
506 | +++ |
507 | *** There is a new date style, `iso', essentially year/month/day. | |
508 | The variable `european-calendar-style' is obsolete - use `calendar-date-style'. | |
509 | Similarly, the commands `american-calendar' and `european-calendar' | |
510 | should be replaced by `calendar-set-date-style'. | |
c3bb6fdb | 511 | |
09e18d03 CY |
512 | +++ |
513 | *** The calendar namespace has been rationalized. | |
514 | All functions and variables now begin with a `calendar-', `diary-', or | |
515 | `holiday-' prefix. The various calendar systems have secondary | |
516 | prefixes, eg `calendar-french-'. The old names you are likely to use | |
517 | directly still exist, for the time being, as aliases, but please start | |
518 | using the new names. | |
519 | ||
520 | *** The function `holiday-chinese' computes holidays on the Chinese calendar. | |
521 | It has been used to add items to the list `holiday-oriental-holidays'. | |
522 | ||
523 | *** `diary-remind' accepts a negative number -DAYS as a shorthand for | |
524 | the list (1 2 ... DAYS). | |
24cdde13 | 525 | |
76be286d DN |
526 | ** Compile and grep modes |
527 | ||
528 | *** The mode-line entry for the *compilation* and *grep* buffer is color coded. | |
529 | It has different colors for to show that: (a) the command is still | |
530 | running, (b) successful completion, (c) error. | |
531 | ||
532 | *** compilation-auto-jump-to-first-error tells `compile' to jump to | |
813fb3fe SM |
533 | the first error encountered during compilations. |
534 | ||
09e18d03 | 535 | ** Custom |
b68769f2 | 536 | +++ |
09e18d03 | 537 | *** defcustom accepts new keyword arguments, `:safe' and `:risky', which |
b68769f2 GM |
538 | set a variable's `safe-local-variable' and `risky-local-variable' property. |
539 | ||
09e18d03 | 540 | ** Diff mode |
38b627ce | 541 | |
09e18d03 CY |
542 | *** diff-refine-hunk highlights word-level details of changes in a diff hunk. |
543 | It's used automatically as you move through hunks, see | |
544 | diff-auto-refine. It is bound to `C-c C-b'. | |
b58a65fa | 545 | |
09e18d03 CY |
546 | *** diff-add-change-log-entries-other-window iterates through the diff |
547 | buffer and tries to create ChangeLog entries for each change. | |
548 | It is bound to `C-x 4 A'. | |
f3ff0fe9 | 549 | |
09e18d03 CY |
550 | ** Fortran |
551 | *** The variable `fortran-line-length' can change the fixed-form line-length. | |
117d3cc5 | 552 | |
09e18d03 CY |
553 | *** In Fortran mode, M-; is now bound to the standard comment-dwim, |
554 | rather than fortran-indent-comment. | |
76be286d | 555 | |
09e18d03 CY |
556 | +++ |
557 | *** (The increasingly misnamed) F90 mode supports Fortran 2003 syntax. | |
b592c357 | 558 | |
09e18d03 | 559 | ** Gnus |
6653c6b7 | 560 | |
09e18d03 CY |
561 | *** The Gnus package has been updated |
562 | There are many news features, bug fixes and improvements; see the file | |
563 | GNUS-NEWS or the node "No Gnus" in the Gnus manual for details. | |
db86064f | 564 | |
09e18d03 CY |
565 | *** In Emacs 23, Gnus uses Emacs' new internal coding system `utf-8-emacs' for |
566 | saving articles drafts and ~/.newsrc.eld. These file may not be read | |
567 | correctly in Emacs 22 and below. If you want to Gnus across different Emacs | |
568 | versions, you may set `mm-auto-save-coding-system' to `emacs-mule'. | |
15947a44 | 569 | |
09e18d03 CY |
570 | ** Help mode |
571 | *** New macro `with-help-window' should set up help windows better | |
572 | than `with-output-to-temp-buffer' with `print-help-return-message'. | |
573 | *** New option `help-window-select' permits to customize whether help | |
574 | window shall be automatically selected when invoking help. | |
575 | *** New variable `help-window-point-marker' permits to specify new | |
576 | position of point in help window (for example in `view-lossage'). | |
15947a44 | 577 | |
09e18d03 | 578 | ** Isearch |
15947a44 | 579 | |
09e18d03 CY |
580 | *** New command `isearch-occur' bound to `M-s o' in isearch mode |
581 | runs `occur' with the current search string. | |
15947a44 | 582 | |
09e18d03 CY |
583 | *** isearch can now search through multiple ChangeLog files. |
584 | When running isearch in a ChangeLog file, if the search fails, | |
585 | then another C-s tries searching the previous ChangeLog, | |
586 | if there is one (e.g. go from ChangeLog to ChangeLog.12). | |
93a142e1 | 587 | |
09e18d03 | 588 | This is enabled if isearch-buffers-multi is non-nil. |
15947a44 | 589 | |
09e18d03 CY |
590 | *** The part of an isearch that failed to match is highlighted in `isearch-fail' |
591 | face. | |
5d503af9 | 592 | |
09e18d03 CY |
593 | *** `C-h C-h' in isearch mode displays isearch-specific Help screen, |
594 | `C-h b' displays all isearch key bindings, `C-h k' displays the full | |
595 | documentation of the given isearch key sequence, `C-h m' displays | |
596 | documentation of isearch mode. All the rest Help commands exit isearch mode | |
597 | and execute their global definitions. | |
332de56f | 598 | |
09e18d03 CY |
599 | *** When started in the minibuffer, Isearch searches in the minibuffer |
600 | history. See `Minibuffer changes', above. | |
2793c9bb | 601 | |
09e18d03 CY |
602 | ** Python |
603 | *** The file etc/emacs.py now supports both Python 2 and 3, meaning | |
604 | that either version can be used as inferior Python by python.el. | |
c5578d5f | 605 | |
09e18d03 CY |
606 | *** Python mode now has `pdbtrack' functionality. When using pdb to |
607 | debug a Python program, pdbtrack notices the pdb prompt and displays | |
608 | the source file and line that the program is stopped at, much the same | |
609 | way as gud-mode does for debugging C programs with gdb. | |
2793c9bb | 610 | |
09e18d03 | 611 | ** T-mouse Mode |
2793c9bb | 612 | |
09e18d03 CY |
613 | *** If the gpm mouse server is running and t-mouse-mode is enabled, |
614 | Emacs uses a Unix socket in a GNU/Linux console to talk to server, | |
615 | rather than faking events using the client program mev. This C level | |
616 | approach provides mouse highlighting and help echoing in the | |
617 | minibuffer. | |
2793c9bb | 618 | |
cc213f24 MA |
619 | +++ |
620 | ** Tramp | |
621 | ||
622 | *** New connection methods. | |
623 | The new methods "plinkx", "plink2", "psftp", "sftp" and "fish" have | |
624 | been introduced. There are also new so-called gateway methods | |
625 | "tunnel" and "socks". | |
626 | ||
627 | *** Multihop syntax has been removed. | |
628 | The pseudo-method "multi" has been removed. Instead of, multi hops | |
629 | can be specified by the new variable `tramp-default-proxies-alist'. | |
630 | ||
631 | *** More default settings. | |
632 | Default values can be set via the variables `tramp-default-user', | |
633 | `tramp-default-user-alist' and `tramp-default-host'. | |
634 | ||
635 | *** Connection information is cached. | |
636 | In order to reduce connection setup, information about used | |
637 | connections are kept persistent in a file. The name of this file is | |
638 | defined in the variable `tramp-persistency-file-name'. | |
639 | ||
640 | *** Control of remote processes. | |
641 | Running processes on a remote host can be controlled by settings in | |
642 | `tramp-remote-path' and `tramp-remote-process-environment'. | |
643 | ||
644 | *** Success of remote copy is checked. | |
645 | When the variable `file-precious-flag' is set, the success of a remote | |
646 | file copy is checked via the file's checksum. | |
647 | ||
7cba69f2 MA |
648 | *** Passwords can be read from an authentification file. |
649 | Tramp uses the package `auth-source' to read passwords from a file, if | |
650 | necessary. | |
651 | ||
09e18d03 | 652 | ** VC |
95d8772f | 653 | |
09e18d03 CY |
654 | *** VC now supports applying VC operations to a set of files at a time. |
655 | This enables VC to work much more effectively with changeset-oriented | |
656 | version-control systems such as Subversion, GNU Arch, Mercurial, Git | |
657 | and Bzr. VC will now pass a multiple-file commit to these systems as | |
658 | a single changeset. | |
d15f7b68 | 659 | |
09e18d03 CY |
660 | *** vc-dir is a new command that displays file names and their VC |
661 | status. It allows to apply various VC operations to a file or a | |
662 | set of files. | |
c3f01f42 | 663 | |
09e18d03 | 664 | *** Clicking on the VC mode-line entry now pops the VC menu. |
4c24d241 | 665 | |
09e18d03 | 666 | *** The VC mode-line entry now has a tooltip that explains the VC file status. |
d15f7b68 | 667 | |
09e18d03 CY |
668 | *** In VC Annotate mode, for VC systems that support changesets, you can |
669 | see the diff for the whole changeset (not only for the current file) | |
670 | by using the vc-annotate-show-changeset-diff-revision-at-line function. | |
a9f480e8 | 671 | |
09e18d03 | 672 | *** In VC Annotate mode, you can type V to toggle the annotation visibility. |
2fb6c6be | 673 | |
09e18d03 CY |
674 | *** In VC Annotate mode, you can type f to show the file revision on |
675 | the current line. | |
d5d381e2 | 676 | |
09e18d03 | 677 | *** vc-git supports the "git grep" command. |
cf944fa4 | 678 | |
09e18d03 CY |
679 | *** Asynchronous VC commands display [Waiting...] in the mode-line |
680 | of the corresponding buffer as long as the asynchronous process is | |
681 | active. | |
cf944fa4 | 682 | |
09e18d03 CY |
683 | *** Log entries can be modified using the key "e" in log-view. |
684 | For now only CVS, RCS, SCCS and SVN support this functionality. | |
685 | This is done by the `modify-change-comment' backend function. | |
143cecdb | 686 | |
09e18d03 CY |
687 | *** In log-view-mode, for VC systems that support changesets, you can |
688 | see the diff for the whole changeset (not only for the current file) | |
689 | by typing the D key or using the "Changeset Diff" menu entry. | |
cf944fa4 | 690 | |
09e18d03 CY |
691 | *** VC Support for Meta-CVS has been removed for lack of maintainer able |
692 | to update it to the new VC. | |
cf944fa4 | 693 | |
d15f7b68 GM |
694 | ** Miscellaneous |
695 | ||
09e18d03 CY |
696 | *** In Change Log mode, the new command C-c C-f (change-log-find-file) |
697 | finds the file associated with the current log entry. | |
7ef39c6e | 698 | |
d15f7b68 | 699 | *** comint-mode uses `start-file-process' now (see Lisp Changes). |
cc213f24 MA |
700 | If `default-directory' is a remote file name, subprocesses are started |
701 | on the corresponding remote system. | |
702 | ||
09e18d03 | 703 | *** In Dired, C-x C-q now runs the command wdired-change-to-wdired-mode, |
40aa8257 JL |
704 | and C-x C-q in wdired-mode exits it with asking a question about |
705 | saving changes. | |
d15f7b68 | 706 | |
09e18d03 CY |
707 | *** Eldoc highlights the function argument under point |
708 | with the face `eldoc-highlight-function-argument'. | |
4596901f | 709 | |
09e18d03 CY |
710 | *** In Etags, the --members option is now the default. |
711 | Use --no-members if you want the old default behaviour of not tagging | |
712 | struct members in C, members variables in C++ and variables in PHP. | |
1752e205 | 713 | |
09e18d03 CY |
714 | *** The `gdb' command only works with the graphical interface now. |
715 | Use `gud-gdb' if you want the (old) text command mode. | |
716 | ||
717 | *** goto-address.el provides two new minor modes, goto-address-mode and | |
718 | goto-address-prog-mode, which buttonize URLS and email addresses. | |
719 | ||
720 | *** The new command `eshell/info' runs info in an eshell buffer. | |
3cf86f00 | 721 | |
4d1e89e3 GM |
722 | *** The new variable `ffap-rfc-directories' specifies a list of local |
723 | directories in which `ffap-rfc' will first search for RFCs. | |
724 | ||
09e18d03 CY |
725 | *** hide-ifdef-mode allows shadowing ifdef-blocks instead of hiding them. |
726 | See option `hide-ifdef-shadow' and function `hide-ifdef-toggle-shadowing'. | |
727 | ||
728 | *** `icomplete-prospects-height' now supercedes `icomplete-prospects-length'. | |
729 | ||
730 | *** Info displays breadcrumbs in the header of the page. | |
731 | See Info-breadcrumbs-depth to control it. | |
732 | ||
733 | *** In Log Edit mode, C-c C-d now shows the diff for the files involved. | |
734 | ||
d2c98acc | 735 | *** net-utils has an `iwconfig' command, similar to the existing `ifconfig'. |
b7bfcc8a | 736 | It is used to configure wireless interfaces. |
d2c98acc | 737 | |
09e18d03 CY |
738 | *** The pcmpl-unix package supports hostname completion for ssh and scp. |
739 | ||
740 | *** sgml-electric-tag-pair-mode lets you simultaneously edit matched tag pairs. | |
741 | ||
742 | *** smerge-refine highlights word-level details of changes in conflict. | |
743 | It's used automatically as you move through conflicts, see smerge-auto-refine. | |
744 | ||
745 | *** talk.el has been extended for multiple tty support. | |
746 | ||
747 | *** A new command `display-time-world' has been added to the Time | |
748 | package. It creates a buffer with an updating time display using | |
749 | several time zones. | |
750 | ||
751 | *** The appearance of superscript and subscript in TeX is more customizable. | |
752 | See the documentation of the variables: tex-fontify-script, | |
753 | tex-font-script-display, tex-suscript-height-ratio, and | |
754 | tex-suscript-height-minimum. | |
755 | ||
756 | *** view-remove-frame-by-deleting is now by default t | |
757 | since users found iconification of view-mode frames distracting. | |
758 | ||
759 | *** WoMan tries to add locale-specific manual page directories to the | |
760 | search path. This can be disabled by setting `woman-locale' to nil. | |
761 | ||
0bfd685e GM |
762 | \f |
763 | * Changes in Emacs 23.1 on non-free operating systems | |
8ab314f9 | 764 | |
203553fd JPW |
765 | ** Case is now considered significant in completion on MS-Windows. |
766 | The default value of `completion-ignore-case' is now nil on | |
767 | MS-Windows, the same as it is for other operating systems. The | |
768 | variable doesn't apply to reading a file name -- in that case Emacs | |
769 | heeds `read-file-name-completion-ignore-case' instead. | |
770 | ||
672f99b6 JR |
771 | --- |
772 | ** IPv6 is supported on MS-Windows. | |
773 | Emacs now supports IPv6 on Windows XP and later, and earlier versions | |
2660a9da | 774 | of Windows with third party IPv6 stacks installed. In Emacs 22, IPv6 was |
672f99b6 JR |
775 | supported on other platforms, but not on Windows due to using the winsock |
776 | 1.1 header file, even though Emacs was linking to the winsock 2 library. | |
777 | ||
0d22595d | 778 | --- |
6e344060 JR |
779 | ** Busy cursor (hourglass) now displays on MS-Windows. |
780 | When Emacs is busy, an hourglass mouse cursor is displayed on Windows. | |
2660a9da JR |
781 | In Emacs 22 only X supported the busy cursor. |
782 | ||
783 | --- | |
784 | ** Battery status is available on MS-Windows | |
785 | Emacs can now display the battery status in the mode-line when enabled with | |
786 | display-battery-mode or from the Options menu. More verbose battery | |
787 | information is also available with the command `battery'. In Emacs 22 | |
788 | battery status was supported only on GNU/Linux and Mac. | |
6e344060 | 789 | |
3280c5c5 JR |
790 | ** More keys available on MS-Windows. |
791 | Keys normally associated with IMEs, and some exotic keys not normally found | |
792 | on standard keyboards have been given names so they can be bound to functions | |
793 | inside Emacs. If there are keys on your keyboard that have not been exposed | |
794 | to Emacs in the past, try C-h k to see if they are available now. | |
795 | ||
796 | Emacs can now bind functions to the extra buttons for media player and | |
797 | browser control present on some keyboards. These buttons are disabled | |
798 | by default, since enabling them prevents their system-wide use when | |
799 | Emacs has focus. To enable them, set the variable | |
0caa490b | 800 | w32-pass-multimedia-buttons to nil. See the doc string of that variable |
3280c5c5 | 801 | for the list of extra keys that are available. |
2660a9da | 802 | |
0bfd685e GM |
803 | \f |
804 | * Incompatible Lisp Changes in Emacs 23.1 | |
8ec65cd7 | 805 | |
fd9440c5 | 806 | ** Variables cannot be both buffer-local and frame-local any more. |
a9b08254 JL |
807 | ** The argument DEFAULT of minibuffer input functions `read-from-minibuffer', |
808 | `read-string', `completing-read', `read-buffer', `read-command', | |
809 | `read-variable' now can be a list of default values. The elements of | |
810 | this list are available for inserting to the minibuffer with `M-n'. | |
811 | If the user enters empty input, the first element is used as the default. | |
812 | ||
fc944cd4 | 813 | ** `functionp' returns nil for special forms. |
65f81a0b | 814 | I.e., it only returns t for objects that can be passed to `funcall'. |
fc944cd4 | 815 | |
58555d81 | 816 | +++ |
4972c361 SM |
817 | ** The multibyteness of process filters is determined by the coding-system |
818 | used for decoding. The functions `process-filter-multibyte-p' and | |
819 | `set-process-filter-multibyte' are obsolete. | |
820 | ||
d82c3d44 GM |
821 | ** The behavior of map-char-table has changed. It may call the |
822 | specified function with a cons (FROM . TO) as a key if characters in | |
823 | that range have the same value. | |
824 | ||
825 | ** The value of the function `charset-id' is now always 0. | |
826 | ||
827 | ** The functions `register-char-codings' and `coding-system-spec' | |
828 | have been removed. | |
829 | ||
6a6b4d7d KH |
830 | ** The cpXXX coding systems are now supported automatically. The |
831 | functions cp-...-codepage, which you had to use in Emacs 22 to enable | |
832 | support for these coding systems, have been deleted. | |
d82c3d44 | 833 | |
03605a28 MA |
834 | +++ |
835 | ** The function `dired-call-process' has been removed. | |
836 | ||
777ea444 | 837 | ** The variable `byte-compile-warnings' can now be a list starting with `not', |
0caa490b | 838 | meaning to disable the specified warnings. The meaning of this list |
777ea444 | 839 | may therefore be the reverse of what you expect (of course, this is |
0caa490b | 840 | only an issue if you make use of the new `not' syntax). Rather than |
777ea444 GM |
841 | checking/manipulating elements directly, use the new functions |
842 | `byte-compile-warning-enabled-p', `byte-compile-disable-warning', and | |
843 | `byte-compile-enable-warning.' | |
844 | ||
69df9d6d GM |
845 | ** `mode-name' is no longer guaranteed to be a string. |
846 | Use `(format-mode-line mode-name)' to ensure a string value. | |
847 | ||
85a1f98d GM |
848 | ** The following features have been removed. They were used for |
849 | displaying various scripts with specific fonts, and are no longer | |
850 | needed now that OpenType font support is available: | |
851 | ||
852 | *** `devanagari' and `devan-util', and all associated devanagari-* and | |
853 | dev-* functions and variables (formerly used for Devanagari script). | |
854 | ||
855 | *** `kannada' and `knd-util', and all associated kannada-* and knd-* | |
856 | functions and variables (formerly used for Kannada script). | |
857 | ||
858 | *** `malayalam' and `mlm-util', and all associated malayalam-* and | |
859 | mlm-* functions and variables (formerly used for Malayalam script). | |
860 | ||
861 | *** `tamil' and `tml-util, and all associated tamil-* and tml-* | |
862 | functions and variables (formerly used for Tamil script). | |
6a6b4d7d | 863 | |
0bfd685e GM |
864 | \f |
865 | * Lisp Changes in Emacs 23.1 | |
8ab314f9 | 866 | |
09e18d03 CY |
867 | ** The new variable next-error-recenter specifies how next-error should |
868 | recenter the visited source file. Its value can be a number (for example, | |
869 | 0 for top line, -1 for bottom line), or nil for no recentering. | |
870 | ||
871 | ** Emacs session information | |
872 | ||
873 | *** The new variables `before-init-time' and `after-init-time' record the | |
874 | value of `current-time' before and after Emacs loads the init files. | |
875 | ||
876 | *** The new function `emacs-uptime' returns the uptime of an Emacs instance. | |
877 | ||
878 | *** The new function `emacs-init-time' returns the duration of the | |
879 | Emacs initialization. | |
880 | ||
881 | ** The new function `format-seconds' converts a number of seconds into a | |
882 | readable string of days, hours, etc. | |
883 | ||
884 | ** set-file-modes is now interactive and can take the mode value in | |
885 | symbolic notation thanks to auxiliary functions. | |
886 | ||
887 | ** If you set find-file-confirm-nonexistent-file to t, then C-x C-f | |
888 | requires confirmation before opening a non-existent file. | |
889 | ||
890 | ** Built-in functions (subr) can now have an interactive specification | |
891 | that is not a prompt string. If the `intspec' parameter of a `DEFUN' | |
892 | starts with a `(', the string is evaluated as a Lisp form. | |
893 | ||
894 | ** Changes affecting display-buffer | |
895 | *** New value nil for split-height-threshold inhibits vertical splitting | |
896 | unless there's no other window. | |
897 | *** New option split-width-threshold controls horizontal splitting. | |
898 | *** A window can be split horizontally even when it's not full-width. | |
899 | *** New option split-window-preferred-function can be set to a function | |
900 | to override the default splitting mechanism of display-buffer. | |
901 | ||
a1562258 SM |
902 | ** The variable window-point-insertion-type determines the insertion-type |
903 | of the marker used for window-point. | |
904 | ||
8ba31f36 SM |
905 | ** minibuffer-local-must-match-filename-map is now named |
906 | minibuffer-local-filename-must-match-map. | |
907 | ||
e2947429 SM |
908 | ** `all-completions' may now return the base size in the last cdr. |
909 | Since this means the returned list is not properly nil-terminated, this | |
910 | is an incompatible change and is thus enabled by the new variable | |
911 | completion-all-completions-with-base-size. | |
912 | ||
913 | ** New function `apply-partially' for curried application. | |
914 | ||
d87be1df SM |
915 | ** `fill-forward-paragraph-function' specifies which function the filling |
916 | code should use to find paragraph boundaries. | |
917 | ||
3ae459e5 CY |
918 | ** The variable `this-command-keys-shift-translated' is non-nil if the |
919 | key sequence invoking the current command was found by | |
920 | shift-translation. | |
921 | ||
922 | ** The new interactive spec code ^ says to first call | |
923 | handle-shift-selection if shift-select-mode is non-nil, before reading | |
924 | the command arguments. | |
925 | ||
8bf5c8a6 GM |
926 | ** When deleting a terminal, the special hook `delete-terminal-functions' |
927 | is run. | |
58555d81 | 928 | |
e5c4079c SM |
929 | ** The `read-shell-command' function does what its name says, with completion. |
930 | It uses the minibuffer-local-shell-command-map for that. | |
931 | ||
932 | ** The `buffer-swap-text' function can swap the text between two buffers. | |
13cda5f9 SM |
933 | This can be useful for modes such as tar-mode, archive-mode, RMAIL. |
934 | ||
a2bc5bdd SM |
935 | ** `clear-image-cache' can be told to flush only images of a specific file. |
936 | ||
64663f06 | 937 | ** clone-indirect-buffer now runs the clone-indirect-buffer-hook. |
d82c3d44 | 938 | |
50bfa18a | 939 | ** `beginning-of-defun-function' now takes one argument, the count |
d82c3d44 | 940 | given to `beginning-of-defun'. |
50bfa18a | 941 | |
39d0bf74 RS |
942 | ** The variable `inhibit-changing-match-data', if non-nil, prevents the |
943 | search and match primitives from changing the match data. | |
944 | ||
59b5d020 JL |
945 | +++ |
946 | ** New function `match-substitute-replacement' returns the result of | |
947 | `replace-match' without actually using it in the buffer. | |
948 | ||
426e6ba0 CY |
949 | ** The new variable `replace-search-function' determines the function |
950 | to use for searching in query-replace and replace-string. | |
951 | ||
952 | ** The new variable `replace-re-search-function' determines the | |
953 | function to use for searching in `query-replace-regexp', | |
954 | `replace-regexp', + `query-replace-regexp-eval', and | |
955 | `map-query-replace-regexp'. | |
956 | ||
2d105adf RS |
957 | ** If a local hook function has a non-nil `permanent-local-hook' |
958 | property, then `kill-all-local-variables' does not remove it from | |
959 | the local value of the hook variable. This means it remains | |
960 | even if you change major modes. | |
961 | ||
b9694062 JL |
962 | +++ |
963 | ** A list of default values can be specified for the DEFAULT argument of | |
964 | functions `read-from-minibuffer', `read-string', `read-command', | |
965 | `read-variable', `read-buffer', `completing-read'. Elements of this list | |
966 | are available for inserting into the minibuffer by typing `M-n'. | |
967 | For empty input these functions return the first element of this list. | |
968 | ||
66dc1ca2 RS |
969 | ** `custom-note-var-changed' tells Custom to treat the change in a certain |
970 | variable as having been made within Custom. | |
971 | ||
ab6198b2 SM |
972 | ** `frame-inherited-parameters' lets new frames inherit parameters from |
973 | the selected frame. | |
66dc1ca2 | 974 | |
c60d543d | 975 | ** Commands should use `use-region-p' to test whether there is |
d03b9b31 RS |
976 | an active region that they should operate on. |
977 | ||
c60d543d RS |
978 | ** `region-active-p' returns non-nil when Transient Mark mode |
979 | is enabled and there is an active region. This is NOT the best function | |
980 | to use to test whether a command should operate on the region instead | |
981 | of the usual behavior -- for that, use `use-region-p'. | |
982 | ||
3ae459e5 CY |
983 | ** If a command sets `transient-mark-mode' to (only . OLDVAL), that |
984 | means to activate transient-mark-mode temporarily, until the next | |
985 | unshifted point motion command or mark deactivation. Afterwards, | |
986 | reset transient-mark-mode to the value OLDVAL. The values `only' and | |
987 | `identity', introduced in Emacs 22, are now deprecated. | |
988 | ||
4f4a84ec SM |
989 | ** New keymap `input-decode-map' overrides like key-translation-map, but |
990 | applies before function-key-map. Also it is terminal-local contrary to | |
991 | key-translation-map. Terminal-specific key-sequences are generally added to | |
992 | this map rather than to function-key-map now. | |
993 | ||
967b2682 GM |
994 | ** The new macro `declare-function' suppresses compiler warnings about |
995 | undefined functions. The new `check-declare' package verifies that such | |
996 | statements are accurate (i.e. the functions are actually defined in | |
997 | the specified files). | |
998 | ||
8bf5c8a6 GM |
999 | ** `ignore-errors' is now a standard macro (does not require the CL package). |
1000 | ||
d9774611 RS |
1001 | ** The new function `read-color' reads a color name using the minibuffer. |
1002 | ||
63571b5a RS |
1003 | ** `interprogram-paste-function' can now return one string or a list |
1004 | of strings. In the latter case, Emacs puts the second and following | |
1005 | strings on the kill ring. | |
1006 | ||
d82c3d44 GM |
1007 | ** Character code, representation, and charset changes. |
1008 | ||
0caa490b | 1009 | The character code space is now 0x0..0x3FFFFF with no gap. |
d82c3d44 GM |
1010 | Characters of code 0x0..0x10FFFF are Unicode characters of the same code points. |
1011 | Characters of code 0x3FFF80..0x3FFFFF are raw 8-bit bytes. | |
1012 | ||
0caa490b | 1013 | Generic characters no longer exist. |
d82c3d44 GM |
1014 | |
1015 | In buffer and string, characters are represented by UTF-8 byte | |
1016 | sequence in a multibyte buffer/string. | |
1017 | ||
1018 | The concept of a charset has changed. A single character may belong to | |
1019 | multiple charsets (e.g. a-grave, U+00E0, belongs to charsets unicode, | |
1020 | iso-8859-1, iso-8859-3, etc). | |
1021 | ||
1022 | *** The new function `characterp' returns t if and only if the argument | |
db4f9d2a | 1023 | is a character. This replaces `char-valid-p', which is now obsolete. |
d82c3d44 GM |
1024 | |
1025 | *** The new function `max-char' returns the maximum character code | |
1026 | (currently it is #x3FFFFF). | |
1027 | ||
1028 | *** The functions `encode-char' and `decode-char' now accept any character sets. | |
1029 | ||
1030 | *** The function `define-charset' now accepts a completely different | |
1031 | form of arguments (old-style arguments still work). | |
1032 | ||
1033 | *** The new function `define-charset-alias' defines an alias of a charset. | |
1034 | ||
1035 | *** The value of the function `char-charset' depends on the current | |
1036 | priorities of charsets. | |
1037 | ||
1038 | *** The new function `charset-priority-list' returns the list of | |
1039 | charsets ordered by priority. | |
1040 | ||
1041 | *** The new function `set-charset-priority' sets priorities of charsets. | |
1042 | ||
d82c3d44 GM |
1043 | *** The new function `unibyte-string' make a unibyte string from bytes. |
1044 | ||
1045 | *** The new function `define-char-code-property' defines a character | |
1046 | code property. | |
1047 | ||
1048 | *** The new function `char-code-property-description' returns the | |
1049 | description string of a character code property. | |
1050 | ||
1051 | *** The function get-char-code-property now accepts many Unicode base | |
1052 | character properties. They are `name', `general-category', | |
1053 | `canonical-combining-class', `bidi-class', `decomposition', | |
1054 | `decimal-digit-value', `digit-value', `numeric-value', `mirrored', | |
1055 | `old-name', `iso-10646-comment', `uppercase', `lowercase', and | |
1056 | `titlecase'. | |
1057 | ||
1058 | *** The new variable `find-word-boundary-function-table' is a | |
1059 | char-table of functions to search for a word boundary. | |
1060 | ||
1061 | *** The new variable `char-script-table' is a char-table of script names. | |
1062 | ||
1063 | *** The new variable `char-width-table' is a char-table of character widths. | |
1064 | ||
1065 | *** The new variable `print-charset-text-property' controls how to | |
1066 | handle `charset' text property on printing a string. | |
1067 | ||
1068 | *** The new variable `printable-chars' is a char-table defining if a | |
1069 | character is printable or not. | |
1070 | ||
1071 | *** The functions `modify-syntax-entry' and `modify-category-entry' now | |
1072 | accepts a cons of characters as the first argument, and modify all | |
1073 | entries in that range of characters. | |
ca7871a3 SM |
1074 | +++ |
1075 | *** `translation-table-for-input' is now obsolete. | |
d82c3d44 | 1076 | |
505d8756 | 1077 | ** Code conversion changes |
d82c3d44 GM |
1078 | |
1079 | *** The new function `define-coding-system' should be used to define a | |
1080 | coding system instead of `make-coding-system' (which is now obsolete). | |
1081 | ||
1082 | *** The functions `encode-coding-region' and `decode-coding-region' | |
1083 | have an optional 4th argument to specify where the result of | |
1084 | conversion should go. | |
1085 | ||
1086 | *** The functions `encode-coding-string' and `decode-coding-string' | |
1087 | have an optional 4th argument specifying a buffer to store the result | |
1088 | of conversion. | |
1089 | ||
1090 | *** The new function `with-coding-priority' executes the body part with | |
1091 | the specified coding system priority order. | |
1092 | ||
1093 | *** The new function `check-coding-systems-region' checks if the text | |
1094 | in the region is encodable by the specified coding systems. | |
1095 | ||
1096 | *** The new function `coding-system-aliases' returns a list of aliases | |
1097 | of a coding system. | |
1098 | ||
1099 | *** The new function `coding-system-charset-list' returns a list of | |
1100 | charsets supported by a coding system. | |
1101 | ||
1102 | *** The new function `coding-system-priority-list' returns a list of | |
1103 | coding systems ordered by their priorities. | |
1104 | ||
1105 | *** The new function `set-coding-system-priority' sets priorities of | |
1106 | coding systems. | |
1107 | ||
1108 | *** The functions `set-coding-priority' and `make-coding-system' are obsolete. | |
1109 | ||
1110 | ** There is a new input method, Robin, different from Quail. | |
0caa490b | 1111 | It has three functionalities: |
d82c3d44 GM |
1112 | i) a simple input method (converts an ASCII sequence into a string). |
1113 | ii) converts an existing buffer substring into another string | |
1114 | iii) reverse conversion (each character produced by a | |
1115 | robin rule can hold the original ASCII sequence as a char-code-property) | |
1116 | ||
1117 | *** The new function `robin-define-package' defines a Robin package. | |
1118 | ||
1119 | *** The new function `robin-modify-package' modifies an existing Robin package. | |
1120 | ||
1121 | *** The new function `robin-use-package' starts using a Robin package | |
1122 | as an input method. | |
1123 | ||
888d7d86 KH |
1124 | *** The new function `string-to-unibyte' is like `string-as-unibyte' |
1125 | but signals an error if STRING contains a non-ASCII, non-eight-bit | |
1126 | character. | |
1127 | ||
505d8756 | 1128 | ** Changes related to the new font backend |
2b7a2553 | 1129 | |
b19aa6dd GM |
1130 | Which font backends to use can be specified by the X resource "FontBackend". |
1131 | For instance, to use both X core fonts and Xft fonts: | |
2b7a2553 | 1132 | |
b19aa6dd | 1133 | Emacs.FontBackend: x,xft |
2b7a2553 | 1134 | |
b19aa6dd GM |
1135 | If this resource is not set, Emacs tries to use all font backends |
1136 | available on your graphic device. | |
d82c3d44 GM |
1137 | |
1138 | *** New frame parameter `font-backend' specifies a list of | |
1139 | font-backends supported by the frame's graphic device. On X, they are | |
1140 | currently `x' and `xft'. | |
1141 | ||
1142 | *** New function `fontp' checks if the argument is a font-spec or font-entity. | |
1143 | ||
1144 | *** New function `font-spec' creates a new font-spec object. | |
1145 | ||
1146 | *** New function `font-get' returns a font property value. | |
1147 | ||
d54b8954 CY |
1148 | *** New function `font-face-attributes' returns a plist of face |
1149 | attributes set by a font. | |
1150 | ||
d82c3d44 GM |
1151 | *** New function `font-put' sets a font property value. |
1152 | ||
1153 | *** New function `list-fonts' returns a list of font-entities matching | |
1154 | the given specification. | |
1155 | ||
1156 | *** New function `list-families' returns a list of family names of | |
1157 | available fonts. | |
1158 | ||
1159 | *** New function `font-font' returns a font-entity best matching with | |
1160 | the given specification. | |
1161 | ||
1162 | *** New function `font-xlfd-name' returns an XLFD name of a given font | |
1163 | (font-spec, font-entity, or font-object). | |
1164 | ||
1165 | *** New function `clear-font-cache' clears all font caches. | |
1166 | ||
1167 | *** The function `set-fontset-font' now accepts a script name as the | |
1168 | second argument, and has an optional 5th argument to control how to | |
1169 | set the font. | |
1170 | ||
505d8756 | 1171 | ** Changes related to multiple tty support |
24cdde13 | 1172 | |
b12f6e85 SM |
1173 | *** $TERM is now set to `dumb' for subprocesses. If you want to know the |
1174 | $TERM inherited by Emacs you will have to look inside initial-environment. | |
1175 | ||
6168122d SM |
1176 | *** $DISPLAY is now dynamically inherited from the frame's `display'. |
1177 | ||
0caa490b | 1178 | *** The `window-system' variable has been made frame-local. The new |
24cdde13 | 1179 | `initial-window-system' variable contains the `window-system' value |
bbe3eb99 GM |
1180 | for the first frame. `window-system' is also now a function that |
1181 | takes a frame argument. | |
24cdde13 GM |
1182 | |
1183 | *** You can specify a terminal device (`tty' parameter) and a terminal | |
1184 | type (`tty-type' parameter) to `make-terminal-frame'. | |
1185 | ||
1186 | *** The new function `make-frame-on-tty' allows you to create a new | |
1187 | frame on another tty device interactively. | |
1188 | ||
1189 | *** The function `make-frame-on-display' now works during a tty | |
1190 | session, and `make-frame-on-tty' works during a graphical session. | |
1191 | ||
da406961 | 1192 | *** New functions: `delete-tty', `suspend-tty', `resume-tty'. |
24cdde13 | 1193 | |
419f8f49 SM |
1194 | *** A new data type for terminals with functions: `get-device-terminal', |
1195 | `terminal-parameters', `terminal-parameter', `set-terminal-parameter'. | |
24cdde13 | 1196 | |
1816bda7 | 1197 | *** New hooks: `suspend-tty-functions' and `resume-tty-functions' |
92cd6a7c | 1198 | are called after a tty frame has been suspended or resumed, |
de3054d5 | 1199 | respectively. The functions are called with the terminal id of the frame |
92cd6a7c DN |
1200 | being suspended/resumed as a parameter. |
1201 | ||
01ff458e | 1202 | *** New function: `environment'. |
da406961 | 1203 | |
4f4a84ec | 1204 | *** New variable: `local-function-key-map'. |
01ff458e SM |
1205 | This in addition to the global function-key-map variable that |
1206 | already existed. The global variable is not used directly any more; | |
1207 | instead, the local-function-key-map is initialized so as to inherit from | |
1208 | function-key-map. | |
da406961 | 1209 | |
82866ad5 SM |
1210 | *** `initial-environment' holds the environment inherited from Emacs's parent. |
1211 | ||
24cdde13 GM |
1212 | *** The `keyboard-translate-table' variable and the terminal and |
1213 | keyboard coding systems have been made terminal-local. | |
1214 | ||
1aa423e9 SM |
1215 | *** In addition to the global function-key-map, Emacs has terminal-local |
1216 | local-function-key-map variables, and uses them instead of the | |
24cdde13 GM |
1217 | global keymaps to set up translations and function key sequences |
1218 | relevant to a specific terminal device. | |
1219 | ||
09e18d03 | 1220 | *** `underline-minimum-offset' keeps the underline away from the baseline. |
24cdde13 | 1221 | |
90ab5c62 SM |
1222 | ** You can now also pass the value of the `invisible' property to invisible-p |
1223 | to check whether it would cause the text to be invisible. Convenient when | |
1224 | checking invisibility of text which has no buffer position | |
1225 | (e.g. in before/after-strings). | |
9f44d41a | 1226 | |
ea2e3ef4 RS |
1227 | ** Non-breaking space now acts as whitespace. |
1228 | ||
41bd52f7 | 1229 | +++ |
8d371994 RS |
1230 | ** In `condition-case', a handler can specify "let the debugger run first". |
1231 | ||
1232 | You do this by writing `debug' in the list of conditions to be handled, | |
1233 | like this: | |
1234 | ||
1235 | (condition-case nil | |
1236 | (foo bar) | |
1237 | ((debug error) nil)) | |
1238 | ||
0a963185 SM |
1239 | ** The `require-match' argument to `completing-read' accepts a new value |
1240 | `confirm-only'. | |
1241 | ||
c69b0314 SM |
1242 | +++ |
1243 | ** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly. | |
1244 | ||
9f44d41a RS |
1245 | ** New function `window-full-width-p' returns t if a window is as wide |
1246 | as its frame. | |
1247 | ||
1248 | ** The new function `split-string-and-unquote' does (what?) | |
1249 | ||
1250 | ** The new function `combine-and-quote-strings' does (what?) | |
1251 | ||
1252 | ** The new function `image-refresh' refreshes all images associated | |
1253 | with a given image specification. | |
1254 | ||
abf13a8b CY |
1255 | +++ |
1256 | ** New variable `user-emacs-directory'. | |
1257 | Use this instead of "~/.emacs.d". | |
1258 | ||
b2b387f9 | 1259 | +++ |
0f3cd6b2 | 1260 | ** The new function `start-file-process' is similar to `start-process', |
b2b387f9 | 1261 | but obeys file handlers. The file handler is chosen based on |
6dbe7eb4 MA |
1262 | `default-directory'. The functions `start-file-process-shell-command' |
1263 | and `process-file-shell-command' are also new; they call internally | |
0f3cd6b2 | 1264 | `start-file-process' and `process-file', respectively. |
b2b387f9 | 1265 | |
967b2682 GM |
1266 | ** The new function `process-lines' executes an external program and |
1267 | returns its output as a list of lines. | |
1268 | ||
64639e26 | 1269 | +++ |
41bd52f7 MA |
1270 | ** `file-remote-p' has new optional parameters IDENTIFICATION and CONNECTED. |
1271 | IDENTIFICATION specifies which part of the remote identifier has to be | |
1272 | returned. With CONNECTED passed non-nil, it is checked whether a | |
1273 | remote connection has been established already. | |
64639e26 | 1274 | |
45595a4f RS |
1275 | ** The two new functions `looking-at-p' and `string-match-p' can do |
1276 | the same matching as `looking-at' and `string-match' without changing | |
1277 | the match data. | |
89835619 SM |
1278 | |
1279 | ** The interactive-form of a function can be added post-facto via the | |
1280 | `interactive-form' symbol property. Mostly useful to add complex interactive | |
1281 | forms to subroutines. | |
9bae34bf | 1282 | \f |
0bfd685e | 1283 | * New Packages for Lisp Programming in Emacs 23.1 |
efeb796b | 1284 | |
d445b3f8 SM |
1285 | ** The new major mode `special-mode' is intended as a parent for |
1286 | major modes such as those that set the "'mode-class 'special" property. | |
1287 | ||
20202f5e | 1288 | ** find-cmd.el can build `find' commands using lisp syntax. |
6dfcbe31 | 1289 | |
9097e8af RS |
1290 | ** The package isearch-multi.el has been added. It implements a new mode |
1291 | `isearch-buffers-minor-mode' that allows isearch to search through | |
1292 | multiple buffers. In this mode a new variable | |
1293 | `isearch-buffers-next-buffer-function' defines the function to call | |
1294 | to get the next buffer to search in the series of multiple buffers. | |
1295 | ||
d53a60a6 TTN |
1296 | ** The new package avl-tree.el deals with the AVL tree data structure. |
1297 | ||
05197f40 | 1298 | \f |
a933dad1 | 1299 | ---------------------------------------------------------------------- |
5b87ad55 | 1300 | This file is part of GNU Emacs. |
a933dad1 | 1301 | |
ab73e885 | 1302 | GNU Emacs is free software: you can redistribute it and/or modify |
5b87ad55 | 1303 | it under the terms of the GNU General Public License as published by |
ab73e885 GM |
1304 | the Free Software Foundation, either version 3 of the License, or |
1305 | (at your option) any later version. | |
5b87ad55 GM |
1306 | |
1307 | GNU Emacs is distributed in the hope that it will be useful, | |
1308 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
1309 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
1310 | GNU General Public License for more details. | |
a933dad1 | 1311 | |
5b87ad55 | 1312 | You should have received a copy of the GNU General Public License |
ab73e885 | 1313 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
a933dad1 | 1314 | |
05197f40 | 1315 | \f |
a933dad1 DL |
1316 | Local variables: |
1317 | mode: outline | |
1318 | paragraph-separate: "[ \f]*$" | |
1319 | end: | |
ab5796a9 | 1320 | |
a533413c | 1321 | arch-tag: e759449d-88b3-4de4-9900-3a6c3dfa23e2 |