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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 GM |
29 | ** The default X toolkit is now Gtk+, rather than Lucid. |
30 | ||
79475ffb GM |
31 | ** Fonts are handled by new code capable of dealing with multiple font |
32 | backends. This requires the freetype and fontconfig libraries, and | |
33 | supports local fonts (fonts installed on the machine where Emacs is | |
34 | running). Additionally, the Xft library can be used for antialiasing | |
e4434ecc GM |
35 | support, the otf library for complex text layout by OpenType fonts, |
36 | and the m17n library for text shaping. Fontconfig-like font names | |
37 | (e.g. monospace-12) are accepted. The old font handling code can | |
38 | be used by passing the configure option `--disable-font-backend' | |
39 | (also available as a run-time option). | |
2b7a2553 | 40 | |
1abe3a1e DN |
41 | ** The new configuration option "--with-dbus" enables D-Bus language |
42 | bindings for Emacs. | |
43 | ||
15f02f65 | 44 | ** The Mac Carbon port is no longer supported. |
79475ffb | 45 | Instead, use... [FIXME what?] |
15f02f65 | 46 | |
9d3cc9b2 GM |
47 | ** configure now checks for libgif before libungif when searching for |
48 | a GIF library. | |
b5ac89f8 | 49 | |
36e625ec GM |
50 | ** Support for systems without alloca has been removed. |
51 | ||
07e5c0b0 DN |
52 | ** Support for Sun windows has been removed. |
53 | ||
bb9f7948 EZ |
54 | ** Support for many obsolete platforms has been removed. |
55 | See the list at the end of etc/MACHINES for details. | |
56 | ||
48a8be40 GM |
57 | ** The `emacstool' utility has been removed. |
58 | ||
a46ee55c GM |
59 | ** The configure options `--with-gcc', `--without-gcc' have been removed. |
60 | Configure will use gcc by default. Set the CC environment variable if | |
61 | you need control over which C compiler is used. | |
62 | ||
0caa490b | 63 | ** The configure option `--with-gtk' has been removed. Gtk is now the |
a46ee55c | 64 | default toolkit, but you can use --with-x-toolkit=gtk if necessary. |
4e5cdb4f | 65 | \f |
6dadd99f NR |
66 | * Changes in Emacs 23.1 |
67 | ||
ba5ff07b SM |
68 | ** `completion-auto-help' can be set to `lazy' to list the completions only |
69 | if you repeat the completion. This was already supported in | |
70 | `partial-completion-mode'. | |
71 | ||
780d7bb9 | 72 | ** Emacs now supports using both X displays and ttys in one session. |
1abe3a1e DN |
73 | Start the server (M-x server-start). Then `emacsclient -t' creates a |
74 | tty frame connected to the running emacs server. You can also use any | |
75 | number of different ttys. `emacsclient -c' creates a new X11 frame on | |
76 | the current $DISPLAY or a tty frame if $DISPLAY is not set. | |
780d7bb9 RS |
77 | |
78 | You can test for the presence of this feature in your Lisp code by | |
79 | testing for the `multi-tty' feature. | |
80 | ||
0caa490b | 81 | ** The Emacs character set is now a superset of Unicode. |
d82c3d44 GM |
82 | (It has about four times the code space, which should be plenty). |
83 | ||
84 | The internal encoding used for buffers and strings is now | |
85 | Unicode-based and called `utf-8-emacs'. utf-8-emacs is backwards | |
86 | compatible with the UTF-8 encoding of Unicode. The `emacs-mule' | |
87 | coding system can still read and write data in the old internal encoding. | |
88 | ||
89 | Since the internal encoding is also used by default for byte-compiled | |
90 | files -- i.e. the normal coding system for byte-compiled Lisp files is | |
91 | now utf-8-Emacs -- Lisp containing non-ASCII characters which is | |
92 | compiled by Emacs 23 can't be read by earlier versions of Emacs. Files | |
93 | compiled by Emacs 20, 21, or 22 are loaded correctly as emacs-mule | |
94 | (whether or not they contain multibyte characters), which makes loading | |
95 | them somewhat slower than Emacs 23-compiled files. Thus it may be worth | |
96 | recompiling existing .elc files which don't need to be shared with older | |
97 | Emacsen. | |
98 | ||
d82c3d44 GM |
99 | ** There are assorted new coding systems/aliases -- see M-x list-coding-systems. |
100 | ||
101 | ** There is a new charset implementation with many new charsets. | |
102 | See M-x list-character-sets. New charsets can be defined conveniently | |
103 | as tables of unicodes. | |
104 | ||
105 | The dimension of a charset is now 1, 2, 3, or 4, and the size of each | |
106 | dimension is no longer limited to 94 or 96. | |
107 | ||
108 | A dynamic charset priority list is used to infer the charset of | |
109 | characters for display. | |
110 | ||
19095422 KH |
111 | ** There are new Chinese-GBK, Chinese-GB18030, Khmer, Bengali, |
112 | Punjabi, Gujarati, Oriya, Telugu, Sinhala, and TaiViet language | |
d82c3d44 GM |
113 | environments. |
114 | ||
7b476dbe JD |
115 | ** Emacs now supports the XEmbed specification. |
116 | You can embed Emacs in another application on X11. The new command line option | |
117 | --parent-id is used to pass the parent window id to Emacs. See | |
118 | http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html | |
119 | for details about XEmbed. | |
120 | ||
58e707fe GM |
121 | ** Emacs comes with a new set of default icons. |
122 | Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png. | |
123 | The Emacs 22 icon is available as `emacs22.png' in the same location. | |
251ad2de | 124 | |
f664fee9 MC |
125 | ** Built-in functions (subr) can now have an interactive specification |
126 | that is not a prompt string. If the `intspec' parameter of a `DEFUN' | |
127 | starts with a `(', the string is evaluated as a Lisp form. | |
128 | ||
129 | ** set-file-modes is now interactive and can take the mode value in | |
130 | symbolic notation thanks to auxiliary functions. | |
131 | ||
90ab5c62 SM |
132 | ** split-window-preferred-function specifies whether display-buffer should |
133 | split windows vertically or horizontally. | |
134 | ||
24cdde13 GM |
135 | ** Emacsclient has been extended to support opening a new terminal |
136 | frame. Its behavior has been changed to open a new Emacs frame by | |
137 | default. Use the -c option to get the old behavior of opening files in | |
138 | the currently selected Emacs frame. | |
139 | ||
c0dadae9 MC |
140 | ** The refcards are now shipped as PDF files. |
141 | ||
795a2a94 GM |
142 | ** Emacs now supports the SVG image format through librsvg2. |
143 | ||
75f6af19 | 144 | ** If you set find-file-confirm-nonexistent-file to t, then C-x C-f |
0a963185 SM |
145 | requires confirmation before opening a non-existent file. |
146 | ||
6dadd99f NR |
147 | ** If the gpm mouse server is running and t-mouse-mode enabled, Emacs uses a |
148 | Unix socket in a GNU/Linux console to talk to server, rather than faking events | |
149 | using the client program mev. This C level approach provides mouse | |
150 | highlighting, and help echoing in the minibuffer. | |
151 | ||
3ae459e5 CY |
152 | ** Recentering changes |
153 | ||
154 | *** The new variable next-error-recenter specifies how next-error should | |
c2e8590b TTN |
155 | recenter the visited source file. Its value can be a number (for example, |
156 | 0 for top line, -1 for bottom line), or nil for no recentering. | |
157 | ||
3ae459e5 | 158 | *** New command recenter-top-bottom moves the current line to window |
1abe3a1e DN |
159 | center, top and bottom on successive invokations. |
160 | ||
3ae459e5 | 161 | *** C-l is bound to the new command recenter-top-bottom, rather than recenter. |
eb28688c | 162 | |
d87b5ced | 163 | ** The mode-line displays a `@' if the default-directory for the current buffer |
1f2e1c75 | 164 | is on a remote machine, or a hyphen otherwise. |
6c5d503f | 165 | |
c9447ae1 GM |
166 | ** The mode-line displays a mode menu when mouse-1 is clicked on a minor mode, |
167 | in the same way as it already did for major modes. | |
168 | ||
de3054d5 | 169 | ** The new command balance-windows-area balances windows both vertically |
62e3c31f | 170 | and horizontally. |
d466e9fc SM |
171 | |
172 | ** The new command close-display-connection can be used to close a connection | |
173 | to a remote display, e.g. because the display is about to become unreachable. | |
6c5d503f MA |
174 | |
175 | ** The command shell prompts for the default directory, when it is | |
176 | called with a prefix, and the default directory is a remote file name. | |
de3054d5 | 177 | This is because some file name handlers (like ange-ftp) are not able to |
6c5d503f | 178 | run processes remotely. |
aff2ba04 RS |
179 | |
180 | ** The new command `display-time-world' starts an updating time display | |
181 | using several time zones, in a buffer. | |
c4c9b6f9 | 182 | |
5c4a15b3 GM |
183 | ** The new function `format-seconds' converts a number of seconds into a |
184 | readable string of days, hours, etc. | |
185 | ||
9f871ce2 GM |
186 | ** The new variables `before-init-time' and `after-init-time' record the |
187 | value of `current-time' before and after Emacs loads the init files. | |
c4c9b6f9 GM |
188 | |
189 | ** The new function `emacs-uptime' returns the uptime of an Emacs instance. | |
190 | ||
b3cf10d7 JL |
191 | ** The new function `emacs-init-time' returns the duration of the |
192 | Emacs initialization. | |
193 | ||
d82c3d44 GM |
194 | ** The minor modes unify-8859-on-encoding-mode, unify-8859-on-decoding-mode |
195 | are obsolete. | |
196 | ||
6dadd99f | 197 | \f |
0bfd685e | 198 | * Startup Changes in Emacs 23.1 |
21f7b9d8 | 199 | |
3063e326 JL |
200 | ** The option `inhibit-startup-screen' (with aliases to old names |
201 | `inhibit-splash-screen' and `inhibit-startup-message') doesn't inhibit | |
202 | display of the initial message in the *scratch* buffer. If you don't | |
203 | want to display the initial message in the *scratch* buffer at startup, | |
204 | you can set the option `initial-scratch-message' to nil. | |
205 | ||
56e1896b JL |
206 | ** New user option `initial-buffer-choice' specifies what to display |
207 | after starting Emacs: startup screen, *scratch* buffer, visiting a | |
208 | file or directory. | |
209 | ||
aa5310e4 DK |
210 | ** New alias `argv' for `command-line-args-left' |
211 | This is a convenience alias, so that one can write `(pop argv)' | |
212 | inside of --eval command line arguments in order to access | |
213 | following arguments. | |
f8fd7ed3 | 214 | |
2e3acc47 | 215 | ** The new command-line option `--disable-font-backend' disables the |
79475ffb GM |
216 | new font backend code at runtime. This option is not available if |
217 | Emacs was compiled without font-backend support. | |
2e3acc47 | 218 | |
f8fd7ed3 | 219 | ** The abbrev file is no longer read at startup in batch mode. |
c44da964 | 220 | \f |
0bfd685e | 221 | * Incompatible Editing Changes in Emacs 23.1 |
b58cb59f | 222 | |
117907d4 JL |
223 | +++ |
224 | ** In Dired-x, all command guesses for ! are now added to the default | |
225 | list accessible by M-n instead of pushing all guesses temporarily into | |
226 | the history list. | |
227 | ||
406c0f12 | 228 | \f |
0bfd685e | 229 | * Editing Changes in Emacs 23.1 |
406c0f12 | 230 | |
3ae459e5 CY |
231 | ** Mark changes |
232 | ||
59b5d020 | 233 | +++ |
3ae459e5 CY |
234 | *** Transient Mark mode is now on by default. |
235 | ||
236 | +++ | |
237 | *** mark-even-if-inactive now defaults to t | |
238 | ||
239 | +++ | |
240 | *** When Transient Mark mode is on, C-SPC C-SPC pushes a mark without activating it. | |
59b5d020 | 241 | |
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. | |
1ac03a31 | 245 | |
ecde850a | 246 | +++ |
3ae459e5 CY |
247 | *** When Transient Mark mode is on, M-$ now checks spelling of the |
248 | region if the region is active. Otherwise, it checks spelling of the | |
dc868f13 JL |
249 | word at point. |
250 | ||
3ae459e5 CY |
251 | *** When Transient Mark mode is on, TAB now indents the region if the |
252 | region is active. | |
6dd697d9 | 253 | |
3ae459e5 CY |
254 | *** `use-empty-active-region' controls whether an empty active region |
255 | in Transient Mark mode should make commands operate on that empty | |
256 | region. | |
257 | ||
258 | ** Temporarily active regions | |
259 | ||
260 | *** The new variable shift-select-mode, non-nil by default, controls | |
261 | shift-selection. When Shift Select mode is on, shift-translated | |
262 | motion keys (e.g. S-left and S-down) activate and extend a temporary | |
263 | region, similar to mouse-selection. | |
264 | ||
265 | *** Temporarily active regions, created using shift-selection or | |
266 | mouse-selection, are not necessarily deactivated in the next command. | |
267 | They are only deactivated after point motion commands that are not | |
268 | shift-translated, or after commands that would ordinarily deactivate | |
269 | the mark in Transient Mark mode (e.g., any command that modifies the | |
270 | buffer). | |
271 | ||
272 | +++ | |
273 | ** C-M-% now shows replacement as it would look in the buffer, with | |
274 | `\N' and `\&' substituted according to the match. Old behavior can be | |
275 | restored by customizing `query-replace-show-replacement'. | |
d03b9b31 | 276 | |
24cdde13 GM |
277 | ** C-z now invokes `suspend-frame', C-x C-c now invokes |
278 | `save-buffers-kill-terminal'. | |
279 | ||
a151f82c SS |
280 | ** New command kill-matching-buffers kills buffers whose name matches a regexp. |
281 | ||
63571b5a RS |
282 | ** You can disable kill ring commands from accessing the primary selection |
283 | by setting `x-select-enable-primary' to nil. | |
284 | ||
285 | ** If `select-active-regions' is t, setting the mark automatically | |
286 | makes the new region into the primary selection (for interaction with | |
287 | other window applications). If you enable this, you might want to bind | |
288 | `mouse-yank-primary' to Mouse-2. | |
539f5bda | 289 | |
4496b02b RS |
290 | ** If `yank-pop-change-selection' is t, rotating the kill ring |
291 | also updates the selection or clipboard to the current yank, | |
292 | just as M-w would do so with the text it copies to the kill ring. | |
293 | ||
505d8756 | 294 | ** Minibuffer changes |
297b8ccd | 295 | |
23d2b215 JL |
296 | *** Minibuffer input of shell commands now comes with completion. |
297 | ||
298 | *** Operations like C-x b and C-x C-f which use switch-to-buffer do not fail | |
299 | any more when used in a minibuffer or a dedicated window. Instead, they | |
300 | fallback on using pop-to-buffer which will use some other window. | |
301 | ||
d47a29c1 JL |
302 | *** When M-n in the minibuffer reaches the end of the list of defaults, |
303 | it adds the completion list to the end, so next M-n continues putting | |
304 | completion items to the minibuffer. The same principle applies to | |
305 | incremental search commands as well: C-s or C-M-s starts searching | |
306 | the default values and after the end of defaults they continue | |
307 | searching minibuffer completion items. | |
f3ed2b83 | 308 | |
dc2f6c05 JL |
309 | *** In C-x d, if you type M-n you get the visited file name of the |
310 | current buffer. | |
311 | ||
a300181f JL |
312 | *** A list of default commands extracted from mailcap according to |
313 | file extensions are available in the list of default values | |
314 | accessible by M-n in the minibuffer that reads a shell command | |
315 | for M-! (shell-command) and fills a list of commands for the current | |
316 | file, and in Dired for ! (dired-do-shell-command) that fills a list of | |
317 | commands for the intersection of file types of marked Dired files. | |
117907d4 JL |
318 | |
319 | *** A list of regexp default values is available via M-n for `occur', | |
320 | `keep-lines', `flush-lines' and `how-many'. This list includes the active | |
321 | region in transient-mark-mode, the word under the cursor, the last isearch | |
322 | regexp, the last isearch string and the last replacement regexp. | |
323 | ||
297b8ccd JL |
324 | *** isearch started in the minibuffer searches in the minibuffer history. |
325 | Reverse isearch commands (C-r, C-M-r) search in previous minibuffer | |
326 | history elements, and forward isearch commands (C-s, C-M-s) search in | |
327 | next history elements. When the reverse search reaches the first history | |
328 | element, it wraps to the last history element, and the forward search | |
329 | wraps to the first history element. When the search is terminated, the | |
330 | history element containing the search string becomes the current. | |
331 | ||
505d8756 GM |
332 | ** New faces |
333 | ||
334 | *** `mode-line-emphasis' is used to highlight certain mode-line information; | |
335 | for example while waiting for a VC command to finish. | |
336 | ||
505d8756 GM |
337 | ** Face changes |
338 | ||
339 | *** The new function `face-all-attributes' returns an alist describing | |
340 | all the basic attributes of a given face. | |
341 | ||
0bfd685e GM |
342 | \f |
343 | * New Modes and Packages in Emacs 23.1 | |
0091c67e | 344 | |
2e282009 | 345 | ** FIXME add details of new packages imported from lisp/gnus. |
143cecdb | 346 | [Maybe some information from doc/misc/gnus-coding.texi can be reused] |
2e282009 | 347 | |
1816bda7 MC |
348 | ** The package doc-view.el has been added. It supports viewing of PDF, |
349 | PostScript and DVI documents inside an Emacs buffer by converting the | |
350 | document to a set of PNG images first. One can also search for a | |
351 | regular expression in the document. The commentary of the file explains | |
352 | its usage. | |
353 | ||
c06c430f MO |
354 | ** The nXML package has been added. It is a new mode for editing XML |
355 | documents. nXML mode allows a schema to be associated with the XML | |
356 | document being edited. nXML mode uses Relax NG as its schema | |
357 | language. The schema is used to provide two key features: | |
358 | ||
359 | *** Continuous validation. nXML validates as you type, highlighting | |
360 | any invalid parts of your document. | |
361 | ||
362 | *** Completion. nXML can assist you in entering an element name, | |
363 | attribute name or data value by using information about what is | |
364 | allowed by the schema in that context. | |
a2e0b5dd | 365 | |
0329d8a3 GM |
366 | ** A new game called `bubbles' has been added. This is a version of |
367 | the "Same Game" with configurable difficulty level. | |
a0818148 | 368 | |
dcd6e8d7 | 369 | ** minibuffer-indicate-depth-mode shows the minibuffer depth in the prompt. |
3f7194ed | 370 | |
15f3eb73 MO |
371 | ** Remember Mode (remember.el) is now included with Emacs. It is a |
372 | mode for quickly jotting down things to remember. Included with | |
373 | remember.el is a backend that can save notes to a Diary file. Please | |
374 | consult the Remember Manual for usage details. | |
375 | ||
9264ee6a MA |
376 | ** D-Bus language bindings for Elisp are provided by the package |
377 | dbus.el and by extensions to the C modules of Emacs. D-Bus is an | |
378 | inter-process communication mechanism for applications residing on the | |
379 | same host, based on messages. See the manual for further details. | |
c154c0be | 380 | |
8f377a4b | 381 | ** zeroconf.el offers service discovery and service publishing |
b2ca37cd MA |
382 | interfaces according to the zeroconf specification. It communicates |
383 | with Avahi, a zeroconf implementation, via D-Bus messages on systems | |
384 | which have installed this software. | |
8f377a4b | 385 | |
c6588a85 MO |
386 | ** EasyPG is now part of the Emacs distribution. It is an all-in-one |
387 | GnuPG interface which includes GnuPG keyring browser, cryptographic | |
388 | operations on regions and files, and automatic encryption of *.gpg | |
389 | files. See the EasyPG Assistant User's Manual for further details. | |
e11910e2 | 390 | |
c06c430f MO |
391 | ** json.el is now included with Emacs. It is a library for parsing |
392 | and generating JSON (JavaScript Object Notation). JSON is a | |
393 | lightweight data-interchange format. | |
394 | ||
e11910e2 GM |
395 | ** Auto Composition Mode is a minor mode that composes characters |
396 | automatically when they are displayed. It is globally on by default. | |
397 | It uses `auto-composition-function' (default `auto-compose-chars'). | |
398 | ||
85efdcf3 JB |
399 | ** The package linum.el is now included with Emacs. It it a new minor |
400 | mode to display line numbers for the current buffer. | |
401 | ||
f6b26818 RW |
402 | ** proced.el has been added. It operates on processes like dired. |
403 | Proced makes an Emacs buffer containing a listing of the current processes | |
404 | (using ps(1)). You can use the normal Emacs commands to move around in | |
405 | this buffer, and special Proced commands to operate on the processes listed. | |
406 | ||
7ef39c6e GM |
407 | ** bug-reference.el provides clickable links to bug reports. |
408 | ||
0bfd685e GM |
409 | \f |
410 | * Changes in Specialized Modes and Packages in Emacs 23.1 | |
61d244ca | 411 | |
c934813f GM |
412 | ** A new `whitespace' package has been installed, and the pre-existing one |
413 | renamed to `old-whitespace'. | |
414 | [FIXME someone explain why this is good, if it is...] | |
415 | ||
429d5f08 GM |
416 | ** In Change Log mode, the new function `change-log-find-file', bound to |
417 | C-c C-f, finds the file associated with the current log entry. | |
e8cbfb8d | 418 | |
e047f448 SM |
419 | ** abbrev was rewritten in Elisp and extended with more flexibility. |
420 | *** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put, | |
a3709a8c | 421 | abbrev-table-p, abbrev-insert, abbrev-table-menu. |
e047f448 SM |
422 | *** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'. |
423 | *** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take | |
424 | extra arguments for arbitrary properties. | |
425 | *** New variable `abbrev-minor-mode-table-alist'. | |
426 | *** `local-abbrev-table' can hold a list of abbrev-tables. | |
427 | *** Abbrevs have now the following special properties: | |
79415279 | 428 | `:count', `:system', `:enable-function', `:case-fixed'. |
e047f448 SM |
429 | *** Abbrev-tables have now the following special properties: |
430 | `:parents', `:case-fixed', `:enable-function', `:regexp', | |
431 | `abbrev-table-modiff'. | |
432 | ||
505d8756 | 433 | ** Help mode |
0253fffa MR |
434 | *** New macro `with-help-window' should set up help windows better |
435 | than `with-output-to-temp-buffer' with `print-help-return-message'. | |
436 | *** New option `help-window-select' permits to customize whether help | |
437 | window shall be automatically selected when invoking help. | |
438 | *** New variable `help-window-point-marker' permits to specify new | |
b0d2d4e8 | 439 | position of point in help window (for example in `view-lossage'). |
0253fffa MR |
440 | |
441 | ** view-remove-frame-by-deleting is now by default t | |
b0d2d4e8 | 442 | since users found iconification of view-mode frames distracting. |
0253fffa | 443 | |
bafbec39 JL |
444 | ** Isearch mode |
445 | ||
446 | *** New command `isearch-occur' bound to `M-s o' in isearch mode | |
447 | runs `occur' with the current search string. | |
448 | ||
449 | *** isearch can now search through multiple ChangeLog files. | |
12bbb989 JL |
450 | When running isearch in a ChangeLog file, if the search fails, |
451 | then another C-s tries searching the previous ChangeLog, | |
452 | if there is one (e.g. go from ChangeLog to ChangeLog.12). | |
453 | ||
9097e8af RS |
454 | This is enabled if isearch-buffers-multi is non-nil. |
455 | ||
4c24d241 GM |
456 | *** The part of an isearch that failed to match is highlighted in `isearch-fail' |
457 | face. | |
458 | ||
320bc739 JL |
459 | *** `C-h C-h' in isearch mode displays isearch-specific Help screen, |
460 | `C-h b' displays all isearch key bindings, `C-h k' displays the full | |
461 | documentation of the given isearch key sequence, `C-h m' displays | |
462 | documentation of isearch mode. All the rest Help commands exit isearch mode | |
463 | and execute their global definitions. | |
464 | ||
c3bb6fdb SM |
465 | ** smerge-refine highlights word-level details of changes in conflict. |
466 | It's used automatically as you move through conflicts, see smerge-auto-refine. | |
467 | ||
25e50a58 DN |
468 | ** Diff mode |
469 | ||
470 | *** diff-refine-hunk highlights word-level details of changes in a diff hunk. | |
471 | It's used automatically as you move through hunks, see | |
472 | diff-auto-refine. It is bound to `C-c C-b'. | |
473 | ||
e7940cb5 DN |
474 | *** diff-add-change-log-entries-other-window iterates through the diff |
475 | buffer and tries to create ChangeLog entries for each change. | |
476 | It is bound to `C-x 4 A'. | |
c3bb6fdb | 477 | |
e6a01e4e | 478 | ** archive-mode has basic support to browse Rar archives. |
c3bb6fdb | 479 | |
24cdde13 GM |
480 | ** talk.el has been extended for multiple tty support. |
481 | ||
76be286d DN |
482 | ** Compile and grep modes |
483 | ||
484 | *** The mode-line entry for the *compilation* and *grep* buffer is color coded. | |
485 | It has different colors for to show that: (a) the command is still | |
486 | running, (b) successful completion, (c) error. | |
487 | ||
488 | *** compilation-auto-jump-to-first-error tells `compile' to jump to | |
813fb3fe SM |
489 | the first error encountered during compilations. |
490 | ||
b68769f2 | 491 | ** In the `copyright' package, you can specify your copyright holders' names. |
b649d2e4 SM |
492 | Only copyright lines with holders matching copyright-names-regexp will be |
493 | considered for update. | |
494 | ||
59ba20a2 GM |
495 | ** The `copyright' package looks for copyright at the end of the buffer |
496 | if `copyright-at-end-flag' is non-nil (change-log-mode sets this). | |
497 | ||
e7ce8577 GM |
498 | ** eldoc highlights the function argument under point |
499 | with the face `eldoc-highlight-function-argument'. | |
500 | ||
ef6d86b5 MR |
501 | ** hide-ifdef-mode permits to shadow ifdef-blocks instead of hiding them. |
502 | See option `hide-ifdef-shadow' and function `hide-ifdef-toggle-shadowing'. | |
503 | ||
b68769f2 | 504 | +++ |
8d5cc579 | 505 | ** defcustom accepts new keyword arguments, `:safe' and `:risky', which |
b68769f2 GM |
506 | set a variable's `safe-local-variable' and `risky-local-variable' property. |
507 | ||
505d8756 | 508 | ** Etags changes |
b0d2d4e8 FP |
509 | *** The --members option is now the default. |
510 | ||
511 | Use --no-members if you want the old default behaviour of not tagging | |
512 | struct members in C, members variables in C++ and variables in PHP. | |
513 | ||
56dada42 | 514 | ** VC |
76be286d | 515 | |
082c5622 | 516 | *** VC now supports applying VC operations to a set of files at a time. |
4a11b6b5 | 517 | This enables VC to work much more effectively with changeset-oriented |
494da8c4 DN |
518 | version-control systems such as Subversion, GNU Arch, Mercurial, Git |
519 | and Bzr. VC will now pass a multiple-file commit to these systems as | |
520 | a single changeset. | |
4a11b6b5 | 521 | |
e1aec6fb | 522 | *** vc-dir is a new command that displays file names and their VC |
a4586856 DN |
523 | status. It allows to apply various VC operations to apply a file or a |
524 | set of files. | |
525 | ||
526 | *** Clicking on the VC mode-line entry now pops the VC menu. | |
527 | ||
528 | *** The VC mode-line entry now has a tooltip that explains the VC file status. | |
529 | ||
b58a65fa TTN |
530 | *** In VC Annotate mode, you can type V to toggle the annotation visibility. |
531 | ||
f3ff0fe9 DN |
532 | *** In VC Annotate mode, you can type f to show the file revision on |
533 | the current line. | |
534 | ||
117d3cc5 DN |
535 | *** vc-git supports the "git grep" command. |
536 | ||
76be286d DN |
537 | *** Asynchronous VC commands display [Waiting...] in the mode-line |
538 | of the corresponding buffer as long as the asynchronous process is | |
539 | active. | |
540 | ||
494da8c4 DN |
541 | *** Log entries can be modified using the key "e" in log-view. |
542 | For now only CVS, RCS, SCCS and SVN support this functionality. | |
543 | This is done by the `modify-change-comment' backend function. | |
b592c357 | 544 | |
93a142e1 DN |
545 | ** log-edit now has a command bound to C-c C-d to show the diff for |
546 | the files involved. | |
547 | ||
5d503af9 SM |
548 | ** sgml-electric-tag-pair-mode lets you simultaneously edit matched tag pairs. |
549 | ||
332de56f GM |
550 | ** The appearance of superscript and subscript in TeX is more customizable. |
551 | See the documentation of the variables: tex-fontify-script, | |
552 | tex-font-script-display, tex-suscript-height-ratio, and | |
553 | tex-suscript-height-minimum. | |
554 | ||
505d8756 | 555 | ** BibTeX mode |
2793c9bb | 556 | |
0caa490b | 557 | *** New command `bibtex-initialize' (re)initializes BibTeX buffers. |
c5578d5f | 558 | |
2793c9bb RW |
559 | *** New `bibtex-entry-format' options `whitespace', `braces', and |
560 | `string', disabled by default. | |
561 | ||
562 | *** New variable `bibtex-cite-matcher-alist' contains rules to | |
0f3cd6b2 | 563 | identify cited keys in BibTeX entries, used by `bibtex-find-crossref'. |
2793c9bb | 564 | |
c5578d5f | 565 | *** Command `bibtex-url' allows multiple URLs per entry. |
2793c9bb | 566 | |
cc213f24 MA |
567 | +++ |
568 | ** Tramp | |
569 | ||
570 | *** New connection methods. | |
571 | The new methods "plinkx", "plink2", "psftp", "sftp" and "fish" have | |
572 | been introduced. There are also new so-called gateway methods | |
573 | "tunnel" and "socks". | |
574 | ||
575 | *** Multihop syntax has been removed. | |
576 | The pseudo-method "multi" has been removed. Instead of, multi hops | |
577 | can be specified by the new variable `tramp-default-proxies-alist'. | |
578 | ||
579 | *** More default settings. | |
580 | Default values can be set via the variables `tramp-default-user', | |
581 | `tramp-default-user-alist' and `tramp-default-host'. | |
582 | ||
583 | *** Connection information is cached. | |
584 | In order to reduce connection setup, information about used | |
585 | connections are kept persistent in a file. The name of this file is | |
586 | defined in the variable `tramp-persistency-file-name'. | |
587 | ||
588 | *** Control of remote processes. | |
589 | Running processes on a remote host can be controlled by settings in | |
590 | `tramp-remote-path' and `tramp-remote-process-environment'. | |
591 | ||
592 | *** Success of remote copy is checked. | |
593 | When the variable `file-precious-flag' is set, the success of a remote | |
594 | file copy is checked via the file's checksum. | |
595 | ||
dc7f8d57 GM |
596 | ** Calendar and diary |
597 | ||
571388b0 | 598 | +++ |
dc7f8d57 GM |
599 | *** There is a new date style, `iso', essentially year/month/day. |
600 | The variable `european-calendar-style' is obsolete - use `calendar-date-style'. | |
601 | Similarly, the commands `american-calendar' and `european-calendar' | |
602 | should be replaced by `calendar-set-date-style'. | |
603 | ||
36c0514c | 604 | +++ |
eee6134c GM |
605 | *** The calendar namespace has been rationalized. |
606 | All functions and variables now begin with a `calendar-', `diary-', or | |
607 | `holiday-' prefix. The various calendar systems have secondary | |
608 | prefixes, eg `calendar-french-'. The old names you are likely to use | |
609 | directly still exist, for the time being, as aliases, but please start | |
610 | using the new names. | |
611 | ||
95d8772f GM |
612 | *** The function `holiday-chinese' computes holidays on the Chinese calendar. |
613 | It has been used to add items to the list `holiday-oriental-holidays'. | |
614 | ||
615 | *** `diary-remind' accepts a negative number -DAYS as a shorthand for | |
616 | the list (1 2 ... DAYS). | |
617 | ||
d15f7b68 GM |
618 | ** Miscellaneous programming mode changes |
619 | ||
da26ea8d GM |
620 | *** The file etc/emacs.py now supports both Python 2 and 3, meaning |
621 | that either version can be used as inferior Python by python.el. | |
c3f01f42 | 622 | |
4c24d241 GM |
623 | *** Python mode now has `pdbtrack' functionality. When using pdb to |
624 | debug a Python program, pdbtrack notices the pdb prompt and displays | |
625 | the source file and line that the program is stopped at, much the same | |
626 | way as gud-mode does for debugging C programs with gdb. | |
627 | ||
d15f7b68 GM |
628 | *** The variable `fortran-line-length' can change the fixed-form line-length. |
629 | ||
a9f480e8 GM |
630 | *** In Fortran mode, M-; is now bound to the standard comment-dwim, |
631 | rather than fortran-indent-comment. | |
632 | ||
b68769f2 GM |
633 | +++ |
634 | *** (The increasingly misnamed) F90 mode supports Fortran 2003 syntax. | |
2fb6c6be | 635 | |
cf944fa4 RS |
636 | ** Gnus package |
637 | ||
638 | *** The Gnus package has been updated | |
639 | ||
143cecdb RS |
640 | *** In Emacs 23, Gnus uses Emacs' new internal coding system `utf-8-emacs' for |
641 | saving articles drafts and ~/.newsrc.eld. These file may not be read | |
642 | correctly in Emacs 22 and below. If you want to Gnus across different Emacs | |
643 | versions, you may set `mm-auto-save-coding-system' to `emacs-mule'. | |
644 | ||
cf944fa4 RS |
645 | *** There are many news features, bug fixes and improvements. |
646 | ||
647 | See the file GNUS-NEWS or the node "No Gnus" in the Gnus manual for details. | |
648 | ||
d15f7b68 GM |
649 | ** Miscellaneous |
650 | ||
7ef39c6e GM |
651 | *** goto-address.el provides two new minor modes, goto-address-mode and |
652 | goto-address-prog-mode, which buttonize URLS and email addresses. | |
653 | ||
d15f7b68 | 654 | *** comint-mode uses `start-file-process' now (see Lisp Changes). |
cc213f24 MA |
655 | If `default-directory' is a remote file name, subprocesses are started |
656 | on the corresponding remote system. | |
657 | ||
d15f7b68 | 658 | *** C-x C-q in dired-mode now runs the command wdired-change-to-wdired-mode, |
40aa8257 JL |
659 | and C-x C-q in wdired-mode exits it with asking a question about |
660 | saving changes. | |
d15f7b68 | 661 | |
4596901f GM |
662 | *** The new command `eshell/info' runs info in an eshell buffer. |
663 | ||
1752e205 GM |
664 | *** The pcmpl-unix package supports hostname completion for ssh and scp. |
665 | ||
3cf86f00 GM |
666 | *** WoMan tries to add locale-specific manual page directories to the |
667 | search path. This can be disabled by setting `woman-locale' to nil. | |
668 | ||
4d1e89e3 GM |
669 | *** The new variable `ffap-rfc-directories' specifies a list of local |
670 | directories in which `ffap-rfc' will first search for RFCs. | |
671 | ||
d2c98acc | 672 | *** net-utils has an `iwconfig' command, similar to the existing `ifconfig'. |
b7bfcc8a | 673 | It is used to configure wireless interfaces. |
d2c98acc | 674 | |
0bfd685e GM |
675 | \f |
676 | * Changes in Emacs 23.1 on non-free operating systems | |
8ab314f9 | 677 | |
672f99b6 JR |
678 | --- |
679 | ** IPv6 is supported on MS-Windows. | |
680 | Emacs now supports IPv6 on Windows XP and later, and earlier versions | |
0caa490b | 681 | of Windows with third party IPv6 stacks installed. Previously IPv6 was |
672f99b6 JR |
682 | supported on other platforms, but not on Windows due to using the winsock |
683 | 1.1 header file, even though Emacs was linking to the winsock 2 library. | |
684 | ||
0d22595d | 685 | --- |
6e344060 JR |
686 | ** Busy cursor (hourglass) now displays on MS-Windows. |
687 | When Emacs is busy, an hourglass mouse cursor is displayed on Windows. | |
688 | Previously only X supported the busy cursor. | |
689 | ||
3280c5c5 JR |
690 | ** More keys available on MS-Windows. |
691 | Keys normally associated with IMEs, and some exotic keys not normally found | |
692 | on standard keyboards have been given names so they can be bound to functions | |
693 | inside Emacs. If there are keys on your keyboard that have not been exposed | |
694 | to Emacs in the past, try C-h k to see if they are available now. | |
695 | ||
696 | Emacs can now bind functions to the extra buttons for media player and | |
697 | browser control present on some keyboards. These buttons are disabled | |
698 | by default, since enabling them prevents their system-wide use when | |
699 | Emacs has focus. To enable them, set the variable | |
0caa490b | 700 | w32-pass-multimedia-buttons to nil. See the doc string of that variable |
3280c5c5 | 701 | for the list of extra keys that are available. |
0bfd685e GM |
702 | \f |
703 | * Incompatible Lisp Changes in Emacs 23.1 | |
8ec65cd7 | 704 | |
fc944cd4 | 705 | ** `functionp' returns nil for special forms. |
65f81a0b | 706 | I.e., it only returns t for objects that can be passed to `funcall'. |
fc944cd4 | 707 | |
58555d81 | 708 | +++ |
4972c361 SM |
709 | ** The multibyteness of process filters is determined by the coding-system |
710 | used for decoding. The functions `process-filter-multibyte-p' and | |
711 | `set-process-filter-multibyte' are obsolete. | |
712 | ||
d82c3d44 GM |
713 | ** The behavior of map-char-table has changed. It may call the |
714 | specified function with a cons (FROM . TO) as a key if characters in | |
715 | that range have the same value. | |
716 | ||
717 | ** The value of the function `charset-id' is now always 0. | |
718 | ||
719 | ** The functions `register-char-codings' and `coding-system-spec' | |
720 | have been removed. | |
721 | ||
6a6b4d7d KH |
722 | ** The cpXXX coding systems are now supported automatically. The |
723 | functions cp-...-codepage, which you had to use in Emacs 22 to enable | |
724 | support for these coding systems, have been deleted. | |
d82c3d44 | 725 | |
03605a28 MA |
726 | +++ |
727 | ** The function `dired-call-process' has been removed. | |
728 | ||
777ea444 | 729 | ** The variable `byte-compile-warnings' can now be a list starting with `not', |
0caa490b | 730 | meaning to disable the specified warnings. The meaning of this list |
777ea444 | 731 | may therefore be the reverse of what you expect (of course, this is |
0caa490b | 732 | only an issue if you make use of the new `not' syntax). Rather than |
777ea444 GM |
733 | checking/manipulating elements directly, use the new functions |
734 | `byte-compile-warning-enabled-p', `byte-compile-disable-warning', and | |
735 | `byte-compile-enable-warning.' | |
736 | ||
69df9d6d GM |
737 | ** `mode-name' is no longer guaranteed to be a string. |
738 | Use `(format-mode-line mode-name)' to ensure a string value. | |
739 | ||
85a1f98d GM |
740 | ** The following features have been removed. They were used for |
741 | displaying various scripts with specific fonts, and are no longer | |
742 | needed now that OpenType font support is available: | |
743 | ||
744 | *** `devanagari' and `devan-util', and all associated devanagari-* and | |
745 | dev-* functions and variables (formerly used for Devanagari script). | |
746 | ||
747 | *** `kannada' and `knd-util', and all associated kannada-* and knd-* | |
748 | functions and variables (formerly used for Kannada script). | |
749 | ||
750 | *** `malayalam' and `mlm-util', and all associated malayalam-* and | |
751 | mlm-* functions and variables (formerly used for Malayalam script). | |
752 | ||
753 | *** `tamil' and `tml-util, and all associated tamil-* and tml-* | |
754 | functions and variables (formerly used for Tamil script). | |
6a6b4d7d | 755 | |
0bfd685e GM |
756 | \f |
757 | * Lisp Changes in Emacs 23.1 | |
8ab314f9 | 758 | |
e2947429 SM |
759 | ** `all-completions' may now return the base size in the last cdr. |
760 | Since this means the returned list is not properly nil-terminated, this | |
761 | is an incompatible change and is thus enabled by the new variable | |
762 | completion-all-completions-with-base-size. | |
763 | ||
764 | ** New function `apply-partially' for curried application. | |
765 | ||
d87be1df SM |
766 | ** `fill-forward-paragraph-function' specifies which function the filling |
767 | code should use to find paragraph boundaries. | |
768 | ||
3ae459e5 CY |
769 | ** The variable `this-command-keys-shift-translated' is non-nil if the |
770 | key sequence invoking the current command was found by | |
771 | shift-translation. | |
772 | ||
773 | ** The new interactive spec code ^ says to first call | |
774 | handle-shift-selection if shift-select-mode is non-nil, before reading | |
775 | the command arguments. | |
776 | ||
58555d81 SM |
777 | ** When deleting a terminal, run the special hook `delete-terminal-functions'. |
778 | ||
e5c4079c SM |
779 | ** The `read-shell-command' function does what its name says, with completion. |
780 | It uses the minibuffer-local-shell-command-map for that. | |
781 | ||
782 | ** The `buffer-swap-text' function can swap the text between two buffers. | |
13cda5f9 SM |
783 | This can be useful for modes such as tar-mode, archive-mode, RMAIL. |
784 | ||
a2bc5bdd SM |
785 | ** `clear-image-cache' can be told to flush only images of a specific file. |
786 | ||
64663f06 | 787 | ** clone-indirect-buffer now runs the clone-indirect-buffer-hook. |
d82c3d44 | 788 | |
50bfa18a | 789 | ** `beginning-of-defun-function' now takes one argument, the count |
d82c3d44 | 790 | given to `beginning-of-defun'. |
50bfa18a | 791 | |
39d0bf74 RS |
792 | ** The variable `inhibit-changing-match-data', if non-nil, prevents the |
793 | search and match primitives from changing the match data. | |
794 | ||
59b5d020 JL |
795 | +++ |
796 | ** New function `match-substitute-replacement' returns the result of | |
797 | `replace-match' without actually using it in the buffer. | |
798 | ||
2d105adf RS |
799 | ** If a local hook function has a non-nil `permanent-local-hook' |
800 | property, then `kill-all-local-variables' does not remove it from | |
801 | the local value of the hook variable. This means it remains | |
802 | even if you change major modes. | |
803 | ||
b9694062 JL |
804 | +++ |
805 | ** A list of default values can be specified for the DEFAULT argument of | |
806 | functions `read-from-minibuffer', `read-string', `read-command', | |
807 | `read-variable', `read-buffer', `completing-read'. Elements of this list | |
808 | are available for inserting into the minibuffer by typing `M-n'. | |
809 | For empty input these functions return the first element of this list. | |
810 | ||
66dc1ca2 RS |
811 | ** `custom-note-var-changed' tells Custom to treat the change in a certain |
812 | variable as having been made within Custom. | |
813 | ||
ab6198b2 SM |
814 | ** `frame-inherited-parameters' lets new frames inherit parameters from |
815 | the selected frame. | |
66dc1ca2 | 816 | |
c60d543d | 817 | ** Commands should use `use-region-p' to test whether there is |
d03b9b31 RS |
818 | an active region that they should operate on. |
819 | ||
c60d543d RS |
820 | ** `region-active-p' returns non-nil when Transient Mark mode |
821 | is enabled and there is an active region. This is NOT the best function | |
822 | to use to test whether a command should operate on the region instead | |
823 | of the usual behavior -- for that, use `use-region-p'. | |
824 | ||
3ae459e5 CY |
825 | ** If a command sets `transient-mark-mode' to (only . OLDVAL), that |
826 | means to activate transient-mark-mode temporarily, until the next | |
827 | unshifted point motion command or mark deactivation. Afterwards, | |
828 | reset transient-mark-mode to the value OLDVAL. The values `only' and | |
829 | `identity', introduced in Emacs 22, are now deprecated. | |
830 | ||
4f4a84ec SM |
831 | ** New keymap `input-decode-map' overrides like key-translation-map, but |
832 | applies before function-key-map. Also it is terminal-local contrary to | |
833 | key-translation-map. Terminal-specific key-sequences are generally added to | |
834 | this map rather than to function-key-map now. | |
835 | ||
967b2682 GM |
836 | ** The new macro `declare-function' suppresses compiler warnings about |
837 | undefined functions. The new `check-declare' package verifies that such | |
838 | statements are accurate (i.e. the functions are actually defined in | |
839 | the specified files). | |
840 | ||
d9774611 RS |
841 | ** The new function `read-color' reads a color name using the minibuffer. |
842 | ||
63571b5a RS |
843 | ** `interprogram-paste-function' can now return one string or a list |
844 | of strings. In the latter case, Emacs puts the second and following | |
845 | strings on the kill ring. | |
846 | ||
d82c3d44 GM |
847 | ** Character code, representation, and charset changes. |
848 | ||
0caa490b | 849 | The character code space is now 0x0..0x3FFFFF with no gap. |
d82c3d44 GM |
850 | Characters of code 0x0..0x10FFFF are Unicode characters of the same code points. |
851 | Characters of code 0x3FFF80..0x3FFFFF are raw 8-bit bytes. | |
852 | ||
0caa490b | 853 | Generic characters no longer exist. |
d82c3d44 GM |
854 | |
855 | In buffer and string, characters are represented by UTF-8 byte | |
856 | sequence in a multibyte buffer/string. | |
857 | ||
858 | The concept of a charset has changed. A single character may belong to | |
859 | multiple charsets (e.g. a-grave, U+00E0, belongs to charsets unicode, | |
860 | iso-8859-1, iso-8859-3, etc). | |
861 | ||
862 | *** The new function `characterp' returns t if and only if the argument | |
db4f9d2a | 863 | is a character. This replaces `char-valid-p', which is now obsolete. |
d82c3d44 GM |
864 | |
865 | *** The new function `max-char' returns the maximum character code | |
866 | (currently it is #x3FFFFF). | |
867 | ||
868 | *** The functions `encode-char' and `decode-char' now accept any character sets. | |
869 | ||
870 | *** The function `define-charset' now accepts a completely different | |
871 | form of arguments (old-style arguments still work). | |
872 | ||
873 | *** The new function `define-charset-alias' defines an alias of a charset. | |
874 | ||
875 | *** The value of the function `char-charset' depends on the current | |
876 | priorities of charsets. | |
877 | ||
878 | *** The new function `charset-priority-list' returns the list of | |
879 | charsets ordered by priority. | |
880 | ||
881 | *** The new function `set-charset-priority' sets priorities of charsets. | |
882 | ||
d82c3d44 GM |
883 | *** The new function `unibyte-string' make a unibyte string from bytes. |
884 | ||
885 | *** The new function `define-char-code-property' defines a character | |
886 | code property. | |
887 | ||
888 | *** The new function `char-code-property-description' returns the | |
889 | description string of a character code property. | |
890 | ||
891 | *** The function get-char-code-property now accepts many Unicode base | |
892 | character properties. They are `name', `general-category', | |
893 | `canonical-combining-class', `bidi-class', `decomposition', | |
894 | `decimal-digit-value', `digit-value', `numeric-value', `mirrored', | |
895 | `old-name', `iso-10646-comment', `uppercase', `lowercase', and | |
896 | `titlecase'. | |
897 | ||
898 | *** The new variable `find-word-boundary-function-table' is a | |
899 | char-table of functions to search for a word boundary. | |
900 | ||
901 | *** The new variable `char-script-table' is a char-table of script names. | |
902 | ||
903 | *** The new variable `char-width-table' is a char-table of character widths. | |
904 | ||
905 | *** The new variable `print-charset-text-property' controls how to | |
906 | handle `charset' text property on printing a string. | |
907 | ||
908 | *** The new variable `printable-chars' is a char-table defining if a | |
909 | character is printable or not. | |
910 | ||
911 | *** The functions `modify-syntax-entry' and `modify-category-entry' now | |
912 | accepts a cons of characters as the first argument, and modify all | |
913 | entries in that range of characters. | |
914 | ||
505d8756 | 915 | ** Code conversion changes |
d82c3d44 GM |
916 | |
917 | *** The new function `define-coding-system' should be used to define a | |
918 | coding system instead of `make-coding-system' (which is now obsolete). | |
919 | ||
920 | *** The functions `encode-coding-region' and `decode-coding-region' | |
921 | have an optional 4th argument to specify where the result of | |
922 | conversion should go. | |
923 | ||
924 | *** The functions `encode-coding-string' and `decode-coding-string' | |
925 | have an optional 4th argument specifying a buffer to store the result | |
926 | of conversion. | |
927 | ||
928 | *** The new function `with-coding-priority' executes the body part with | |
929 | the specified coding system priority order. | |
930 | ||
931 | *** The new function `check-coding-systems-region' checks if the text | |
932 | in the region is encodable by the specified coding systems. | |
933 | ||
934 | *** The new function `coding-system-aliases' returns a list of aliases | |
935 | of a coding system. | |
936 | ||
937 | *** The new function `coding-system-charset-list' returns a list of | |
938 | charsets supported by a coding system. | |
939 | ||
940 | *** The new function `coding-system-priority-list' returns a list of | |
941 | coding systems ordered by their priorities. | |
942 | ||
943 | *** The new function `set-coding-system-priority' sets priorities of | |
944 | coding systems. | |
945 | ||
946 | *** The functions `set-coding-priority' and `make-coding-system' are obsolete. | |
947 | ||
948 | ** There is a new input method, Robin, different from Quail. | |
0caa490b | 949 | It has three functionalities: |
d82c3d44 GM |
950 | i) a simple input method (converts an ASCII sequence into a string). |
951 | ii) converts an existing buffer substring into another string | |
952 | iii) reverse conversion (each character produced by a | |
953 | robin rule can hold the original ASCII sequence as a char-code-property) | |
954 | ||
955 | *** The new function `robin-define-package' defines a Robin package. | |
956 | ||
957 | *** The new function `robin-modify-package' modifies an existing Robin package. | |
958 | ||
959 | *** The new function `robin-use-package' starts using a Robin package | |
960 | as an input method. | |
961 | ||
505d8756 | 962 | ** Changes related to the new font backend |
2b7a2553 | 963 | |
b19aa6dd GM |
964 | Which font backends to use can be specified by the X resource "FontBackend". |
965 | For instance, to use both X core fonts and Xft fonts: | |
2b7a2553 | 966 | |
b19aa6dd | 967 | Emacs.FontBackend: x,xft |
2b7a2553 | 968 | |
b19aa6dd GM |
969 | If this resource is not set, Emacs tries to use all font backends |
970 | available on your graphic device. | |
d82c3d44 GM |
971 | |
972 | *** New frame parameter `font-backend' specifies a list of | |
973 | font-backends supported by the frame's graphic device. On X, they are | |
974 | currently `x' and `xft'. | |
975 | ||
976 | *** New function `fontp' checks if the argument is a font-spec or font-entity. | |
977 | ||
978 | *** New function `font-spec' creates a new font-spec object. | |
979 | ||
980 | *** New function `font-get' returns a font property value. | |
981 | ||
982 | *** New function `font-put' sets a font property value. | |
983 | ||
984 | *** New function `list-fonts' returns a list of font-entities matching | |
985 | the given specification. | |
986 | ||
987 | *** New function `list-families' returns a list of family names of | |
988 | available fonts. | |
989 | ||
990 | *** New function `font-font' returns a font-entity best matching with | |
991 | the given specification. | |
992 | ||
993 | *** New function `font-xlfd-name' returns an XLFD name of a given font | |
994 | (font-spec, font-entity, or font-object). | |
995 | ||
996 | *** New function `clear-font-cache' clears all font caches. | |
997 | ||
998 | *** The function `set-fontset-font' now accepts a script name as the | |
999 | second argument, and has an optional 5th argument to control how to | |
1000 | set the font. | |
1001 | ||
505d8756 | 1002 | ** Changes related to multiple tty support |
24cdde13 | 1003 | |
b12f6e85 SM |
1004 | *** $TERM is now set to `dumb' for subprocesses. If you want to know the |
1005 | $TERM inherited by Emacs you will have to look inside initial-environment. | |
1006 | ||
6168122d SM |
1007 | *** $DISPLAY is now dynamically inherited from the frame's `display'. |
1008 | ||
0caa490b | 1009 | *** The `window-system' variable has been made frame-local. The new |
24cdde13 | 1010 | `initial-window-system' variable contains the `window-system' value |
bbe3eb99 GM |
1011 | for the first frame. `window-system' is also now a function that |
1012 | takes a frame argument. | |
24cdde13 GM |
1013 | |
1014 | *** You can specify a terminal device (`tty' parameter) and a terminal | |
1015 | type (`tty-type' parameter) to `make-terminal-frame'. | |
1016 | ||
1017 | *** The new function `make-frame-on-tty' allows you to create a new | |
1018 | frame on another tty device interactively. | |
1019 | ||
1020 | *** The function `make-frame-on-display' now works during a tty | |
1021 | session, and `make-frame-on-tty' works during a graphical session. | |
1022 | ||
da406961 | 1023 | *** New functions: `delete-tty', `suspend-tty', `resume-tty'. |
24cdde13 | 1024 | |
419f8f49 SM |
1025 | *** A new data type for terminals with functions: `get-device-terminal', |
1026 | `terminal-parameters', `terminal-parameter', `set-terminal-parameter'. | |
24cdde13 | 1027 | |
1816bda7 | 1028 | *** New hooks: `suspend-tty-functions' and `resume-tty-functions' |
92cd6a7c | 1029 | are called after a tty frame has been suspended or resumed, |
de3054d5 | 1030 | respectively. The functions are called with the terminal id of the frame |
92cd6a7c DN |
1031 | being suspended/resumed as a parameter. |
1032 | ||
01ff458e | 1033 | *** New function: `environment'. |
da406961 | 1034 | |
4f4a84ec | 1035 | *** New variable: `local-function-key-map'. |
01ff458e SM |
1036 | This in addition to the global function-key-map variable that |
1037 | already existed. The global variable is not used directly any more; | |
1038 | instead, the local-function-key-map is initialized so as to inherit from | |
1039 | function-key-map. | |
da406961 | 1040 | |
82866ad5 SM |
1041 | *** `initial-environment' holds the environment inherited from Emacs's parent. |
1042 | ||
24cdde13 GM |
1043 | *** The `keyboard-translate-table' variable and the terminal and |
1044 | keyboard coding systems have been made terminal-local. | |
1045 | ||
1aa423e9 SM |
1046 | *** In addition to the global function-key-map, Emacs has terminal-local |
1047 | local-function-key-map variables, and uses them instead of the | |
24cdde13 GM |
1048 | global keymaps to set up translations and function key sequences |
1049 | relevant to a specific terminal device. | |
1050 | ||
1051 | ||
90ab5c62 SM |
1052 | ** You can now also pass the value of the `invisible' property to invisible-p |
1053 | to check whether it would cause the text to be invisible. Convenient when | |
1054 | checking invisibility of text which has no buffer position | |
1055 | (e.g. in before/after-strings). | |
9f44d41a | 1056 | |
ea2e3ef4 RS |
1057 | ** Non-breaking space now acts as whitespace. |
1058 | ||
41bd52f7 | 1059 | +++ |
8d371994 RS |
1060 | ** In `condition-case', a handler can specify "let the debugger run first". |
1061 | ||
1062 | You do this by writing `debug' in the list of conditions to be handled, | |
1063 | like this: | |
1064 | ||
1065 | (condition-case nil | |
1066 | (foo bar) | |
1067 | ((debug error) nil)) | |
1068 | ||
0a963185 SM |
1069 | ** The `require-match' argument to `completing-read' accepts a new value |
1070 | `confirm-only'. | |
1071 | ||
c69b0314 SM |
1072 | +++ |
1073 | ** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly. | |
1074 | ||
9f44d41a RS |
1075 | ** New function `window-full-width-p' returns t if a window is as wide |
1076 | as its frame. | |
1077 | ||
1078 | ** The new function `split-string-and-unquote' does (what?) | |
1079 | ||
1080 | ** The new function `combine-and-quote-strings' does (what?) | |
1081 | ||
1082 | ** The new function `image-refresh' refreshes all images associated | |
1083 | with a given image specification. | |
1084 | ||
abf13a8b CY |
1085 | +++ |
1086 | ** New variable `user-emacs-directory'. | |
1087 | Use this instead of "~/.emacs.d". | |
1088 | ||
b2b387f9 | 1089 | +++ |
0f3cd6b2 | 1090 | ** The new function `start-file-process' is similar to `start-process', |
b2b387f9 | 1091 | but obeys file handlers. The file handler is chosen based on |
6dbe7eb4 MA |
1092 | `default-directory'. The functions `start-file-process-shell-command' |
1093 | and `process-file-shell-command' are also new; they call internally | |
0f3cd6b2 | 1094 | `start-file-process' and `process-file', respectively. |
b2b387f9 | 1095 | |
967b2682 GM |
1096 | ** The new function `process-lines' executes an external program and |
1097 | returns its output as a list of lines. | |
1098 | ||
64639e26 | 1099 | +++ |
41bd52f7 MA |
1100 | ** `file-remote-p' has new optional parameters IDENTIFICATION and CONNECTED. |
1101 | IDENTIFICATION specifies which part of the remote identifier has to be | |
1102 | returned. With CONNECTED passed non-nil, it is checked whether a | |
1103 | remote connection has been established already. | |
64639e26 | 1104 | |
45595a4f RS |
1105 | ** The two new functions `looking-at-p' and `string-match-p' can do |
1106 | the same matching as `looking-at' and `string-match' without changing | |
1107 | the match data. | |
89835619 SM |
1108 | |
1109 | ** The interactive-form of a function can be added post-facto via the | |
1110 | `interactive-form' symbol property. Mostly useful to add complex interactive | |
1111 | forms to subroutines. | |
9bae34bf | 1112 | \f |
0bfd685e | 1113 | * New Packages for Lisp Programming in Emacs 23.1 |
efeb796b | 1114 | |
9097e8af RS |
1115 | ** The package isearch-multi.el has been added. It implements a new mode |
1116 | `isearch-buffers-minor-mode' that allows isearch to search through | |
1117 | multiple buffers. In this mode a new variable | |
1118 | `isearch-buffers-next-buffer-function' defines the function to call | |
1119 | to get the next buffer to search in the series of multiple buffers. | |
1120 | ||
d53a60a6 TTN |
1121 | ** The new package avl-tree.el deals with the AVL tree data structure. |
1122 | ||
05197f40 | 1123 | \f |
a933dad1 | 1124 | ---------------------------------------------------------------------- |
5b87ad55 | 1125 | This file is part of GNU Emacs. |
a933dad1 | 1126 | |
5b87ad55 GM |
1127 | GNU Emacs is free software; you can redistribute it and/or modify |
1128 | it under the terms of the GNU General Public License as published by | |
64be3a42 | 1129 | the Free Software Foundation; either version 3, or (at your option) |
5b87ad55 GM |
1130 | any later version. |
1131 | ||
1132 | GNU Emacs is distributed in the hope that it will be useful, | |
1133 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
1134 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
1135 | GNU General Public License for more details. | |
a933dad1 | 1136 | |
5b87ad55 GM |
1137 | You should have received a copy of the GNU General Public License |
1138 | along with GNU Emacs; see the file COPYING. If not, write to the | |
1139 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
1140 | Boston, MA 02110-1301, USA. | |
a933dad1 | 1141 | |
05197f40 | 1142 | \f |
a933dad1 DL |
1143 | Local variables: |
1144 | mode: outline | |
1145 | paragraph-separate: "[ \f]*$" | |
1146 | end: | |
ab5796a9 | 1147 | |
a533413c | 1148 | arch-tag: e759449d-88b3-4de4-9900-3a6c3dfa23e2 |