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29b7722a | 1 | GNU Emacs NEWS -- history of user-visible changes. |
5b87ad55 | 2 | |
893db5bc | 3 | Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
5b87ad55 | 4 | See the end of the file for license conditions. |
a933dad1 | 5 | |
893db5bc | 6 | Please send Emacs bug reports to bug-gnu-emacs@gnu.org. |
9a21d88b KS |
7 | If possible, use M-x report-emacs-bug. |
8 | ||
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 | 16 | |
adce950d | 17 | \f |
aa701ce8 CY |
18 | * Installation Changes in Emacs 23.2 |
19 | ||
2233cfb0 | 20 | ** New configure options for Emacs developers. |
aa701ce8 | 21 | These are not new features; only the configure flags are new. |
2233cfb0 | 22 | |
aa701ce8 CY |
23 | *** --enable-profiling builds Emacs with profiling enabled. |
24 | This might not work on all platforms. | |
2233cfb0 | 25 | |
aa701ce8 CY |
26 | *** --enable-checking[=OPTIONS] builds emacs with extra runtime checks. |
27 | ||
45980501 GM |
28 | ** `make install' now consistently ignores umask, creating a |
29 | world-readable install. | |
30 | ||
26e533e2 | 31 | ** Emacs compiles with Gconf support, if it is detected. |
96639030 | 32 | Use the configure option --without-gconf to disable this. |
8ecd59ca | 33 | This is used by the `font-use-system-font' feature (see below). |
96639030 | 34 | |
f9245b5d | 35 | * Startup Changes in Emacs 23.2 |
2233cfb0 | 36 | |
96639030 CY |
37 | ** The command-line option -Q (--quick) also inhibits loading X resources. |
38 | However, if Emacs is compiled with the Lucid or Motif toolkit, X | |
39 | resource settings for the graphical widgets are still applied. | |
40 | On Windows, the -Q option causes Emacs to ignore Registry settings, | |
41 | but environment variables set on the Registry are still honored. | |
2233cfb0 | 42 | |
f9245b5d CY |
43 | *** The new variable `inhibit-x-resources' shows whether X resources |
44 | were loaded. | |
8686ac71 | 45 | |
96639030 CY |
46 | ** New command-line option -mm (--maximized) maximizes the initial frame. |
47 | ||
f9245b5d | 48 | * Changes in Emacs 23.2 |
fcb68f70 | 49 | |
96639030 | 50 | ** The maximum size of buffers (and the largest fixnum) is doubled. |
2de9f71c SM |
51 | On typical 32bit systems, buffers can now be up to 512MB. |
52 | ||
96639030 CY |
53 | ** The default value of `trash-directory' is now nil. |
54 | This means that `move-file-to-trash' trashes files according to | |
d63a01ef CY |
55 | freedesktop.org specifications, the same method used by the Gnome, |
56 | KDE, and XFCE desktops. (This change has no effect on Windows, which | |
57 | uses `system-move-file-to-trash' for trashing.) | |
58 | ||
e044e4fc | 59 | ** The pointer now becomes invisible when typing. |
96639030 | 60 | Customize `make-pointer-invisible' to disable this feature. |
e044e4fc | 61 | |
96639030 | 62 | ** Font changes |
2233cfb0 | 63 | |
96639030 CY |
64 | *** Emacs can use the system default monospaced font in Gnome. |
65 | To enable this feature, set `font-use-system-font' to non-nil (it is | |
66 | nil by default). If the system default changes, Emacs changes also. | |
67 | This feature requires Gconf support, which is automatically included | |
68 | at compile-time if configure detects the gconf libraries (you can | |
69 | disable this with the configure option --without-gconf). | |
2233cfb0 | 70 | |
96639030 CY |
71 | *** On X11, Emacs reacts to Xft changes made by configuration tools, |
72 | via the XSETTINGS mechanism. This includes antialias, hinting, | |
73 | hintstyle, RGBA, DPI and lcdfilter changes. | |
f4fcbe98 | 74 | |
96639030 CY |
75 | ** Killing a buffer with a running process now asks for confirmation. |
76 | To remove this query, remove `process-kill-buffer-query-function' from | |
77 | `kill-buffer-query-functions', or set the appropriate process flag | |
78 | with `set-process-query-on-exit-flag'. | |
100b6355 | 79 | |
34481ea1 | 80 | ** File-local variable changes |
2233cfb0 | 81 | |
34481ea1 CY |
82 | *** Specifying a minor mode as a local variables enables that mode, |
83 | unconditionally. The previous behavior, toggling the mode, was | |
84 | neither reliable nor generally desirable. | |
85 | ||
4d4e9522 | 86 | *** There are new commands for adding and removing file-local variables: |
34481ea1 CY |
87 | `add-file-local-variable', `delete-file-local-variable', |
88 | `add-file-local-variable-prop-line', and | |
89 | `delete-file-local-variable-prop-line'. | |
90 | ||
4d4e9522 | 91 | *** There are new commands for adding and removing directory-local variables, |
34481ea1 CY |
92 | and copying them to and from file-local variable lists: |
93 | `add-dir-local-variable', `delete-dir-local-variable', | |
94 | `copy-dir-locals-to-file-locals', | |
82941b5e JL |
95 | `copy-dir-locals-to-file-locals-prop-line' and |
96 | `copy-file-locals-to-dir-locals'. | |
97 | ||
96639030 | 98 | ** Internationalization changes |
2233cfb0 | 99 | |
96639030 CY |
100 | *** Unibyte sessions are now considered obsolete. |
101 | This refers to the EMACS_UNIBYTE environment variable as well as the | |
102 | --unibyte, --multibyte, --no-multibyte, and --no-unibyte command line | |
103 | arguments. Customizing enable-multibyte-characters and setting | |
104 | default-enable-multibyte-characters are also deprecated. | |
2233cfb0 | 105 | |
96639030 CY |
106 | *** New coding system `utf-8-hfs'. |
107 | This is suitable for default-file-name-coding-system on Mac OS X; see | |
108 | international/ucs-normalize.el. | |
109 | ||
110 | ** Function arguments in *Help* buffers are now shown in upper-case. | |
111 | Customize `help-downcase-arguments' to t to show them in lower-case. | |
3c736e33 | 112 | |
2233cfb0 CY |
113 | ** New command `async-shell-command', bound globally to `M-&'. |
114 | This executes the command asynchronously, similar to calling `M-!' and | |
115 | manually adding an ampersand to the end of the command. With `M-&', | |
116 | you don't need the ampersand. The output appears in the buffer | |
117 | `*Async Shell Command*'. | |
118 | ||
119 | ** When running in a new enough xterm (newer than version 242), Emacs | |
120 | asks xterm what the background color is and it sets up faces | |
121 | accordingly for a dark background if needed (the current default is to | |
122 | consider the background light). | |
123 | ||
05197f40 | 124 | \f |
0badeef4 GM |
125 | * Editing Changes in Emacs 23.2 |
126 | ||
96639030 | 127 | ** Kill-ring and selection changes |
2233cfb0 | 128 | |
f9245b5d CY |
129 | *** If `select-active-regions' is t, any active region automatically |
130 | becomes the primary selection (for interaction with other window | |
131 | applications). If you enable this, you might want to bind | |
132 | `mouse-yank-primary' to Mouse-2. | |
2233cfb0 | 133 | |
96639030 CY |
134 | *** When `save-interprogram-paste-before-kill' is non-nil, the kill |
135 | commands save the interprogram-paste selection into the kill ring | |
136 | before doing anything else. This avoids losing the selection. | |
2233cfb0 | 137 | |
96639030 CY |
138 | *** When `kill-do-not-save-duplicates' is non-nil, identical |
139 | subsequent kills are not duplicated in the `kill-ring'. | |
f9245b5d | 140 | |
96639030 | 141 | ** Completion changes |
0badeef4 | 142 | |
51ef56c4 | 143 | *** The new command `completion-at-point' provides mode-sensitive completion. |
2233cfb0 | 144 | |
51ef56c4 | 145 | *** tab-always-indent set to `complete' lets TAB do completion as well. |
2233cfb0 | 146 | |
96639030 | 147 | *** The new completion-style `initials' is available. |
f9245b5d | 148 | For instance, this can complete M-x lch to list-command-history. |
2233cfb0 | 149 | |
96639030 CY |
150 | *** The new variable `completions-format' determines how completions |
151 | are displayed in the *Completions* buffer. If you set it to | |
152 | `vertical', completions are sorted vertically in columns. | |
153 | ||
96639030 | 154 | ** The default value of `blink-matching-paren-distance' is increased. |
40e93a2c | 155 | |
96639030 CY |
156 | ** M-n provides more default values in the minibuffer for commands |
157 | that read file names. These include the file name at point (when ffap | |
158 | is loaded without ffap-bindings), the file name on the current line | |
159 | (in Dired buffers), and the directory names of adjacent Dired windows | |
160 | (for Dired commands that operate on several directories, such as copy, | |
161 | rename, or diff). | |
7d371eac | 162 | |
96639030 CY |
163 | ** M-r is bound to the new `move-to-window-line-top-bottom'. |
164 | This moves point to the window center, top and bottom on successive | |
165 | invocations, in the same spirit as the C-l (recenter-top-bottom) | |
166 | command. | |
216349f8 | 167 | |
96639030 CY |
168 | ** The new variable `recenter-positions' determines the default |
169 | cycling order of C-l (`recenter-top-bottom'). | |
0116abbd | 170 | |
26e533e2 CY |
171 | ** The abbrevs file is now a file named abbrev_defs in |
172 | user-emacs-directory; but the old location, ~/.abbrev_defs, is used if | |
173 | that file exists. | |
2233cfb0 | 174 | |
0badeef4 | 175 | \f |
009c963c MA |
176 | * Changes in Specialized Modes and Packages in Emacs 23.2 |
177 | ||
1e7d4475 SM |
178 | ** The bookmark menu has a narrowing search via bookmark-bmenu-search. |
179 | ||
26e533e2 | 180 | ** Calc |
2233cfb0 | 181 | |
26e533e2 CY |
182 | *** The Calc settings file is now a file named calc.el in |
183 | user-emacs-directory; but the old location, ~/.calc.el, is used if | |
184 | that file exists. | |
2233cfb0 | 185 | |
26e533e2 CY |
186 | *** Graphing commands (`g f' etc.) now work on MS-Windows, if you have |
187 | the native Windows port of Gnuplot version 3.8 or later installed. | |
d10c031a | 188 | |
f9245b5d | 189 | ** Calendar and diary |
2233cfb0 | 190 | |
f9245b5d CY |
191 | *** Fancy diary display is now the default. |
192 | If you prefer the simple display, customize `diary-display-function'. | |
2233cfb0 | 193 | |
f9245b5d | 194 | *** The diary's fancy display now enables view-mode. |
2233cfb0 | 195 | |
f9245b5d CY |
196 | *** The command `calendar-current-date' accepts an optional argument |
197 | giving an offset from today. | |
198 | ||
199 | ** Desktop | |
2233cfb0 | 200 | |
f9245b5d CY |
201 | *** The default value for `desktop-buffers-not-to-save' is nil. |
202 | This means Desktop will try restoring all buffers, when you restart | |
203 | your Emacs session. Also, `desktop-buffers-not-to-save' is only | |
204 | effective for buffers that have no associated file. If you want to | |
205 | exempt buffers that do correspond to files, customize the value of | |
206 | `desktop-files-not-to-save' instead. | |
207 | ||
2b3489a7 | 208 | ** Dired |
2233cfb0 | 209 | |
4102856c CY |
210 | *** The new variable `dired-auto-revert-buffer', if non-nil, causes |
211 | Dired buffers to be reverted automatically on revisiting them. | |
2b3489a7 | 212 | |
aefcadb6 | 213 | ** DocView |
2233cfb0 | 214 | |
0a745733 | 215 | *** When `doc-view-continuous' is non-nil, scrolling a line |
aefcadb6 JL |
216 | on the page edge advances to the next/previous page. |
217 | ||
2233cfb0 CY |
218 | ** Elint |
219 | ||
220 | *** Elint now uses compilation-mode. | |
221 | ||
222 | *** Elint can now scan individual files and whole directories, | |
223 | and can be run in batch mode. | |
224 | ||
225 | *** Elint does a more thorough initialization, and recognizes more built-in | |
226 | functions and variables. Customize `elint-scan-preloaded' if you want | |
227 | to sacrifice some accuracy for a faster startup. | |
228 | ||
229 | *** Elint attempts some basic understanding of featurep and (f)boundp tests. | |
230 | ||
231 | *** Customize `elint-ignored-warnings' to suppress some warnings. | |
232 | ||
49f073bd | 233 | ** GDB-UI |
70e013b4 | 234 | |
da14b7ca | 235 | *** Toolbar functionality for reverse debugging. Display of STL |
f492f32f | 236 | collections as watch expressions. These features require GDB 7.0 or later. |
ee047ec4 | 237 | |
a601d313 | 238 | ** Grep |
2233cfb0 | 239 | |
26e533e2 | 240 | *** A new command `zrgrep' searches recursively in gzipped files. |
a601d313 | 241 | |
9f18817f JL |
242 | ** Info |
243 | ||
244 | *** The new command `Info-virtual-index' bound to "I" displays a menu of | |
245 | matched topics found in the index. | |
246 | ||
f38fd73d JL |
247 | *** The new command `info-finder' replaces finder.el with a virtual Info |
248 | manual that generates an Info file which gives the same information | |
249 | through a menu structure. | |
250 | ||
2233cfb0 CY |
251 | ** LaTeX mode now provides completion (via completion-at-point). |
252 | ||
cec84921 CY |
253 | ** Message mode is now the default mode for composing mail. |
254 | ||
255 | The default for `mail-user-agent' is now message-user-agent, so the | |
256 | C-x m (`compose-mail') command uses Message mode instead of Mail mode. | |
257 | ||
258 | Message mode has been included in Emacs, as part of the Gnus package, | |
259 | for several years. It provides several features that are absent in | |
260 | Mail mode, such as MIME handling. | |
261 | ||
262 | *** If the user has not customized mail-user-agent, `compose-mail' | |
263 | checks for Mail mode customizations, and issues a warning if these | |
264 | customizations are found. This alerts users who may otherwise be | |
265 | unaware that their mail configuration has changed. | |
266 | ||
267 | To disable this check, set compose-mail-user-agent-warnings to nil. | |
268 | ||
c5347676 GM |
269 | ** The default value of mail-interactive is t, since Emacs 23.1. |
270 | (This was not announced at the time.) It means that when sending mail, | |
271 | Emacs will wait for the process sending mail to return. If you | |
272 | experience delays when sending mail, you may wish to set this to nil. | |
273 | ||
93bff749 CY |
274 | ** nXML mode is now the default for editing XML files. |
275 | ||
2233cfb0 CY |
276 | ** pcomplete provides a new command `pcomplete-std-completion' which |
277 | is similar to `pcomplete' but using the standard completion UI code. | |
278 | ||
f2608df3 | 279 | ** Shell (and other comint modes) |
2233cfb0 | 280 | |
f2608df3 | 281 | *** M-s is no longer bound to `comint-next-matching-input'. |
2233cfb0 | 282 | |
f2608df3 CY |
283 | *** M-r is now bound to `comint-history-isearch-backward-regexp'. |
284 | This starts an incremental search of the comint/shell input history. | |
2233cfb0 | 285 | |
f2608df3 | 286 | *** ansi-color is now enabled by default in Shell mode. |
93bff749 CY |
287 | To disable it, set ansi-color-for-comint-mode to nil. |
288 | ||
93bff749 | 289 | ** Tramp |
2233cfb0 | 290 | |
93bff749 CY |
291 | *** New connection methods "rsyncc", "imap" and "imaps". |
292 | On systems which support GVFS-Fuse, Tramp offers also the new | |
293 | connection methods "dav", "davs", "obex" and "synce". | |
8525a1d6 | 294 | |
3c3bf6ce | 295 | ** VC and related modes |
2233cfb0 | 296 | |
b4e813ca DN |
297 | *** When using C-x v v or C-x v i on a unregistered file that is in a |
298 | directory not controlled by any VCS, ask the user what VC backend to | |
299 | use to create a repository, create a new repository and register the | |
300 | file. | |
2233cfb0 | 301 | |
c0c035fa CY |
302 | *** New command `vc-root-print-log', bound to `C-x v L'. |
303 | This displays a `*vc-change-log*' buffer showing the history of the | |
304 | version-controlled directory tree as a whole. | |
2233cfb0 | 305 | |
ef7b27ef CY |
306 | *** New command `vc-root-diff', bound to `C-x v D'. |
307 | This is similar to `vc-diff', but compares the entire directory tree | |
308 | of the current VC directory with its working revision. | |
2233cfb0 | 309 | |
c0c035fa CY |
310 | *** `C-x v l' and `C-x v L' do not show the full log by default. |
311 | The number of entries shown can be chosen interactively with a prefix | |
312 | argument, or by customizing vc-log-show-limit. The `*vc-change-log*' | |
313 | buffer now contains buttons at the end of the buffer, which can be | |
314 | used to increase the number of entries shown. RCS, SCCS, and CVS do | |
315 | not support this feature. | |
2233cfb0 | 316 | |
d1e4c403 DN |
317 | *** vc-annotate supports annotations through file copies and renames, |
318 | it displays the old names for the files and it can show logs/diffs for | |
319 | the corresponding lines. Currently only Git and Mercurial take | |
320 | advantage of this feature. | |
2233cfb0 | 321 | |
662c5698 DN |
322 | *** The log command in vc-annotate can display a single log entry |
323 | instead of redisplaying the full log. The RCS, CVS and SCCS VC | |
324 | backends do not support this. | |
2233cfb0 | 325 | |
3c3bf6ce | 326 | *** When a file is not found, VC will not try to check it out of RCS anymore. |
2233cfb0 | 327 | |
c0c035fa | 328 | *** Diff and log operations can be used from Dired buffers. |
8de724f3 | 329 | |
e05b6a4e DN |
330 | *** vc-git changes |
331 | ||
46a4f27f GM |
332 | **** The short log format for git makes use of the graph display, |
333 | so it's not supported on git versions earlier than 1.5.6. | |
334 | ||
46a4f27f GM |
335 | **** vc-dir uses the --relative option of git, and so requires at least |
336 | git version 1.5.5. | |
fcc70817 | 337 | |
f492f32f GM |
338 | **** Support for operating with stashes has been added to vc-dir: |
339 | the stash list is displayed in the *vc-dir* header, stashes can be | |
340 | created, removed, applied and their content displayed. | |
6b4df8a6 | 341 | |
4dfb3b9c DN |
342 | *** vc-bzr supports operating with shelves: the shelve list is |
343 | displayed in the *vc-dir* header, shelves can be created, removed and applied. | |
2233cfb0 | 344 | |
31764e15 SM |
345 | *** log-edit-strip-single-file-name controls whether or not single filenames |
346 | are stripped when copying text from the ChangeLog to the *VC-Log* buffer. | |
347 | ||
9f18817f | 348 | ** Miscellaneous |
2233cfb0 | 349 | |
c585bf32 JL |
350 | *** Interactively `multi-isearch-buffers' and `multi-isearch-buffers-regexp' |
351 | read buffer names to search, one by one, ended with RET. With a prefix | |
352 | argument, they ask for a regexp, and search in buffers whose names match | |
353 | the specified regexp. Interactively `multi-isearch-files' and | |
354 | `multi-isearch-files-regexp' read file names to search, one by one, | |
355 | ended with RET. With a prefix argument, they ask for a wildcard, and | |
356 | search in file buffers whose file names match the specified wildcard. | |
2233cfb0 | 357 | |
59ffcfc4 | 358 | *** Autorevert Tail mode now works also for remote files. |
2233cfb0 | 359 | |
3b0788f6 | 360 | *** The new eshell built-in commands `su' and `sudo' support Tramp. |
2233cfb0 CY |
361 | Thus, they change `default-directory' to reflect the new user id, and |
362 | let commands run under that user's permissions. This works even when | |
9bbd0cac | 363 | `default-directory' is already remote. Calling the external commands |
2233cfb0 CY |
364 | is possible via `*su' or `*sudo', respectively. |
365 | ||
366 | ** Obsolete packages | |
367 | ||
368 | *** sym-comp.el is now obsolete, superseded by completion-at-point. | |
369 | ||
370 | *** lucid.el and levents.el are now obsolete. | |
a91e1f6b | 371 | |
af077012 SY |
372 | \f |
373 | * New Modes and Packages in Emacs 23.2 | |
374 | ||
cec84921 CY |
375 | ** CEDET (the Collection of Emacs Development Tools) is now in Emacs. |
376 | This is a collection of packages to aid with using Emacs as an IDE | |
377 | (integrated development environment): | |
378 | ||
379 | *** The Semantic package allows the use of parsers to intelligently | |
380 | edit and navigate source code. Parsers for C/C++, Java, Javascript, | |
381 | and several other languages are included by default, and Semantic can | |
382 | also interface with external tools such as GNU Global and GNU Idutils. | |
383 | ||
384 | To enable Semantic, use the global minor mode `semantic-mode'. | |
385 | See the Semantic manual for details. | |
386 | ||
387 | *** EDE (Emacs Development Environment) is a package for managing code | |
388 | projects, including features such as automatic Makefile generation. | |
389 | ||
390 | To enable EDE, use the minor mode `global-ede-mode'. | |
391 | See the EDE manual for details. | |
392 | ||
393 | *** SRecode is a library for recoding Semantic tags back into source | |
394 | code. It is currently used by some parts of Semantic and EDE; in the | |
395 | future, it may be used for code generation features. | |
396 | ||
397 | *** The EIEIO library implements a subset of the Common Lisp Object | |
398 | System (CLOS). It is used by the other CEDET packages. | |
399 | ||
e1ada222 | 400 | ** mpc.el is a front end for the Music Player Daemon. Run it with M-x mpc. |
96639030 | 401 | |
0de9f8b7 SM |
402 | ** htmlfontify.el turns a fontified Emacs buffer into an HTML page. |
403 | ||
304fe7fa | 404 | ** js.el is a new major mode for JavaScript files. |
0822135e | 405 | |
3d994264 TZ |
406 | ** imap-hash.el is a new library to address IMAP mailboxes as hashtables. |
407 | ||
0822135e | 408 | \f |
b3429475 GM |
409 | * Incompatible Lisp Changes in Emacs 23.2 |
410 | ||
b6f94db5 CY |
411 | ** The Lisp reader turns integers that are too large/small into floats. |
412 | For instance, on machines where `536870911' is the largest integer, | |
413 | reading `536870912' gives the floating-point object `536870912.0'. | |
300ad19d CY |
414 | |
415 | This change only concerns the Lisp reader; it does not affect how | |
416 | actual integer objects overflow. | |
b6f94db5 | 417 | |
b3429475 GM |
418 | ** Several obsolete functions removed. |
419 | The functions have been obsolete since Emacs 19, and are unlikely to | |
420 | be in use: | |
421 | ||
422 | time-stamp-month-dd-yyyy, time-stamp-dd/mm/yyyy, time-stamp-mon-dd-yyyy | |
423 | time-stamp-dd-mon-yy, time-stamp-yy/mm/dd, time-stamp-yyyy/mm/dd, | |
424 | time-stamp-yyyy-mm-dd, time-stamp-yymmdd, time-stamp-hh:mm:ss, | |
425 | time-stamp-hhmm, baud-rate | |
426 | ||
b3429475 GM |
427 | ** Support for generating Emacs 18 compatible bytecode (by setting |
428 | the variable `byte-compile-compatibility') has been removed. | |
429 | ||
f492f32f GM |
430 | ** In image-mode.el `image-mode-maybe' is obsolete. |
431 | Instead, you can either use `image-mode' (which displays an image file | |
432 | as the actual image initially), or `image-mode-as-text' (when you want | |
433 | to display an image file as text initially). `image-mode-as-text' is a | |
434 | combination of a non-image mode from `auto-mode-alist' (or Fundamental | |
435 | mode) and `image-minor-mode'. `image-minor-mode' provides a `C-c C-c' | |
436 | key binding to toggle image display. | |
9b9debd1 JL |
437 | `image-toggle-display-text' removes image properties. |
438 | `image-toggle-display-image' adds image properties. | |
f492f32f | 439 | `image-toggle-display' toggles between `image-mode-as-text' and `image-mode'. |
9b9debd1 | 440 | |
b3429475 | 441 | \f |
0822135e | 442 | * Lisp changes in Emacs 23.2 |
2233cfb0 | 443 | |
901c830b CY |
444 | ** All the default-FOO variables that hold the default value of the FOO |
445 | variable, are now declared obsolete. | |
4fcc3d32 | 446 | |
901c830b CY |
447 | ** read-key is a function halfway between read-event and read-key-sequence. |
448 | It reads a single key, but obeys input and escape sequence decoding. | |
528c56e2 | 449 | |
96639030 | 450 | ** Frame parameter changes |
2233cfb0 | 451 | |
96639030 CY |
452 | *** You can give the `fullscreen' frame parameter the value `maximized'. |
453 | This maximizes the frame. | |
2233cfb0 | 454 | |
96639030 CY |
455 | *** The new frame parameter `sticky' makes Emacs frames sticky in |
456 | virtual desktops. | |
457 | ||
901c830b | 458 | ** Completion changes |
2233cfb0 | 459 | |
901c830b | 460 | *** completion-base-size is obsoleted by completion-base-position. |
d5e63715 SM |
461 | This change causes a few backward incompatibilities, mostly with |
462 | choose-completion-string-functions where the `mini-p' argument has | |
463 | been replaced by a `base-position' argument, and where the `base-size' | |
464 | argument is now always nil. | |
2233cfb0 | 465 | |
901c830b CY |
466 | *** New function `completion-in-region' to use the standard completion |
467 | facilities on a particular region of text. | |
2233cfb0 | 468 | |
901c830b | 469 | *** The 4th arg to all-completions (aka hide-spaces) is declared obsolete. |
2233cfb0 | 470 | |
901c830b CY |
471 | *** completion-annotate-function specifies how to compute annotations |
472 | for completions displayed in *Completions*. | |
473 | ||
474 | ** Minibuffer changes | |
2233cfb0 | 475 | |
901c830b CY |
476 | *** read-file-name-predicate is obsolete. It was used to pass the predicate |
477 | to read-file-name-internal because read-file-name-internal abused its `pred' | |
478 | argument to pass the current directory, but this hack is not needed | |
479 | any more. | |
480 | ||
481 | ** Changes to file-manipulation functions | |
2233cfb0 | 482 | |
901c830b | 483 | *** `delete-directory' has an optional parameter RECURSIVE. |
2233cfb0 | 484 | |
901c830b CY |
485 | *** New function `copy-directory', which copies a directory recursively. |
486 | ||
9d28c33e SM |
487 | ** called-interactively-p now takes one argument and replaces interactive-p |
488 | which is now marked obsolete. | |
901c830b | 489 | |
ced10a4c SM |
490 | ** New function set-advertised-calling-convention makes it possible |
491 | to obsolete arguments as well as make some arguments mandatory. | |
838ff458 | 492 | |
8cb95edf SM |
493 | ** You can control which binding is preferentially shown in menus and |
494 | docstrings by adding a `:advertised-binding' property to the corresponding | |
495 | command's symbol. That property can hold a single binding or a list | |
496 | of bindings. | |
497 | ||
901c830b | 498 | ** Network and process changes |
2233cfb0 | 499 | |
901c830b | 500 | *** start-process-shell-command and start-file-process-shell-command |
a126db16 | 501 | now only take a single `command' argument. |
2233cfb0 | 502 | |
f7704e26 CY |
503 | *** The new variable `process-file-side-effects' should be set to nil |
504 | if a `process-file' call does not change a remote file. This allows | |
505 | file name handlers such as Tramp to optimizations. | |
2233cfb0 | 506 | |
f7704e26 | 507 | *** make-network-process can now also create `seqpacket' Unix sockets. |
901c830b CY |
508 | |
509 | ** Loading changes | |
2233cfb0 | 510 | |
901c830b | 511 | *** eval-next-after-load is obsolete. |
2233cfb0 | 512 | |
901c830b CY |
513 | *** New hook `after-load-functions' run after loading an Elisp file. |
514 | ||
515 | ** Byte compilation changes | |
2233cfb0 | 516 | |
901c830b CY |
517 | *** Changing the file-names generated by byte-compilation by redefining |
518 | the function `byte-compile-dest-file' before loading bytecomp.el is obsolete. | |
519 | Instead, customize byte-compile-dest-file-function. | |
2233cfb0 | 520 | |
901c830b CY |
521 | *** `byte-compile-warnings' has new members, `constants' and `suspicious'. |
522 | ||
523 | ** New macro with-silent-modifications to tweak text properties without | |
524 | affecting the buffer's modification state. | |
525 | ||
0822135e CY |
526 | ** Hash tables have a new printed representation that is readable. |
527 | The feature `hashtable-print-readable' identifies this new | |
528 | functionality. | |
3c736e33 | 529 | |
4102856c | 530 | ** New functions for performing Unicode normalization: |
3c736e33 KH |
531 | ucs-normalize-NFD-region, ucs-normalize-NFD-string, |
532 | ucs-normalize-NFC-region, ucs-normalize-NFC-string, | |
533 | ucs-normalize-NFKD-region, ucs-normalize-NFKD-string, | |
534 | ucs-normalize-NFKC-region, ucs-normalize-NFKC-string, | |
535 | ucs-normalize-HFS-NFD-region, ucs-normalize-HFS-NFD-string, | |
536 | ucs-normalize-HFS-NFC-region, ucs-normalize-HFS-NFC-string. | |
94862c1b | 537 | |
197b67b1 GM |
538 | ** Face aliases can now be marked as obsolete, using the macro |
539 | `define-obsolete-face-alias'. | |
14ad89e1 | 540 | |
72030c76 GM |
541 | ** New function `window-full-height-p', analogous to the full-width version. |
542 | ||
d3080264 | 543 | \f |
f9245b5d CY |
544 | * Changes in Emacs 23.2 on non-free operating systems |
545 | ||
f9245b5d CY |
546 | ** On MS-Windows, `display-time' now displays the system load average |
547 | as well as the time, as it does on GNU and Unix. | |
9f18817f | 548 | |
009c963c | 549 | \f |
0bfd685e | 550 | * Installation Changes in Emacs 23.1 |
c58dccad | 551 | |
3f7194ed | 552 | ** The default X toolkit is now Gtk+, rather than Lucid. |
09e18d03 CY |
553 | The configure option `--with-gtk' has been removed. Gtk is now the |
554 | default toolkit, but you can use --with-x-toolkit=gtk if necessary. | |
3f7194ed | 555 | |
09e18d03 CY |
556 | ** New font code. |
557 | Fonts are handled by new code capable of dealing with multiple font | |
de9efca0 | 558 | backends. This uses the freetype and fontconfig libraries. |
16e82271 | 559 | |
09e18d03 CY |
560 | *** Emacs now accepts font names supplied in the fontconfig format |
561 | (e.g. "monospace-12:bold") and GTK format (e.g. "Monospace Bold 12"). | |
1abe3a1e | 562 | |
09e18d03 CY |
563 | *** Added support for local fonts (fonts installed on the machine |
564 | where Emacs is running). | |
565 | ||
566 | *** Added support for the Xft library for antialiasing. | |
567 | ||
568 | *** Added support for the otf library for complex text layout by | |
569 | OpenType fonts. | |
570 | ||
571 | *** Added support for the m17n library for text shaping. | |
15f02f65 | 572 | |
09e18d03 | 573 | ** Changes to image support |
16e82271 | 574 | |
09e18d03 | 575 | *** configure now checks for libgif before libungif when searching for |
9d3cc9b2 | 576 | a GIF library. |
16e82271 | 577 | |
09e18d03 CY |
578 | *** Emacs now supports the SVG image format through librsvg2. |
579 | ||
fab17942 JR |
580 | *** Emacs now supports multi-page TIFF images. |
581 | ||
da14b7ca | 582 | ** New NeXTSTEP-based port. |
3dcdb6ea | 583 | This provides support for GNUstep (via the GNUstep libraries) and Mac |
1e9b0fb2 | 584 | OS X (via the Cocoa libraries). |
043023ca | 585 | |
2e538385 | 586 | Specify --with-ns to configure for this. By default, a self-contained |
043023ca CY |
587 | app will be built (containing all lisp). To install/share lisp with |
588 | other emacsen (e.g. X11 build) use --disable-ns-self-contained. See | |
589 | nextstep/README and nextstep/INSTALL in the Emacs source directory. | |
006a2cde CY |
590 | |
591 | ** Mac OS X is no longer supported via Carbon. | |
592 | Use the NeXTSTEP port, described above. | |
36e625ec | 593 | |
09e18d03 CY |
594 | ** The new configuration option "--with-dbus" enables D-Bus language |
595 | bindings for Emacs. | |
07e5c0b0 | 596 | |
bb9f7948 EZ |
597 | ** Support for many obsolete platforms has been removed. |
598 | See the list at the end of etc/MACHINES for details. | |
16e82271 | 599 | |
09e18d03 | 600 | *** Support for systems without alloca has been removed. |
16e82271 | 601 | |
09e18d03 | 602 | *** Support for Sun windows has been removed. |
16e82271 | 603 | |
2e0ef05b | 604 | *** The `emacstool' utility has been removed. |
09e18d03 | 605 | |
006a2cde | 606 | ** The following platforms will be removed in a future Emacs version: |
9bc072cc CY |
607 | If you are still using Emacs on one of these platforms, please email |
608 | emacs-devel@gnu.org to inform the Emacs developers. | |
006a2cde | 609 | |
9bc072cc | 610 | *** Old GNU/Linux systems based on libc version 5. |
006a2cde | 611 | |
9bc072cc | 612 | *** Old FreeBSD, NetBSD, and OpenBSD systems based on the COFF |
da14b7ca | 613 | executable format. |
006a2cde CY |
614 | |
615 | *** Solaris versions 2.6 and below. | |
616 | ||
32847230 CY |
617 | *** Solaris on IBM RS6000 machines. |
618 | ||
619 | *** UNIX System V (the original SysV, not later platforms based on it). | |
620 | ||
9bc072cc CY |
621 | *** Unixware on non-x86 machines. |
622 | ||
32847230 CY |
623 | *** Platforms not supporting shared libraries (i.e., requiring the |
624 | NO_SHARED_LIBS compilation flag). | |
006a2cde | 625 | |
a46ee55c GM |
626 | ** The configure options `--with-gcc', `--without-gcc' have been removed. |
627 | Configure will use gcc by default. Set the CC environment variable if | |
628 | you need control over which C compiler is used. | |
629 | ||
09e18d03 CY |
630 | ** The refcards are now shipped as PDF files. |
631 | ||
3b75ca8b GM |
632 | ** The manuals are now licensed under the GNU Free Documentation License v1.3, |
633 | or any later version. | |
634 | ||
09e18d03 CY |
635 | ** Emacs 23 comes with a new set of default icons. |
636 | Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png. | |
637 | The Emacs 22 icon is available as `emacs22.png' in the same location. | |
4e5cdb4f | 638 | \f |
6dadd99f NR |
639 | * Changes in Emacs 23.1 |
640 | ||
09e18d03 | 641 | ** Improved X Window System support |
16e82271 | 642 | |
09e18d03 CY |
643 | *** Emacs now supports using both X displays and ttys in one session. |
644 | With an Emacs server active (M-x server-start), `emacsclient -t' | |
645 | creates a tty frame connected to the running emacs server. You can | |
646 | use any number of different ttys. `emacsclient -c' creates a new X11 | |
647 | frame on the current $DISPLAY (or a tty frame if $DISPLAY is not set). | |
e390f3a3 JD |
648 | There may be problems if a display exits unexpectedly and Emacs is compiled |
649 | with Gtk+, see etc/PROBLEMS. | |
780d7bb9 RS |
650 | |
651 | You can test for the presence of this feature in your Lisp code by | |
652 | testing for the `multi-tty' feature. | |
16e82271 CY |
653 | |
654 | *** Emacs starts in the background, as a daemon, when given the | |
eab2ee89 DN |
655 | --daemon command line argument. It disconnects from the terminal and |
656 | starts the server. Clients can connect and create graphical or | |
657 | terminal frames using emacsclient. | |
16e82271 | 658 | |
c569485c | 659 | **** emacsclient starts emacs in daemon mode and connects to it when |
82d0a250 DN |
660 | --alternate-editor="" is used (or when the evironment variable |
661 | ALTERNATE_EDITOR is set to "") and emacsclient cannot connect to an | |
c569485c DN |
662 | emacs server. |
663 | ||
09e18d03 | 664 | *** The new command close-display-connection closes a connection to a |
717c97e5 | 665 | remote display. There are some bugs for Gtk+. See etc/PROBLEMS. |
d82c3d44 | 666 | |
09e18d03 CY |
667 | *** Emacs now supports the XEmbed specification. |
668 | You can embed Emacs in another application on X11. The new command line | |
669 | option --parent-id is used to pass the parent window id to Emacs. See | |
7b476dbe JD |
670 | http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html |
671 | for details about XEmbed. | |
16e82271 | 672 | |
09e18d03 CY |
673 | *** Emacs can now set the frame opacity. |
674 | The opacity of a frame can be controlled by setting the `alpha' frame | |
675 | parameter. This only takes effect on a compositing window manager for | |
920ab46c SZ |
676 | the X Window System, such as Compiz, Beryl and Compiz Fusion, on Mac |
677 | OS X, or on Windows 2000 and later versions of Windows. | |
55f9bad5 GM |
678 | |
679 | The alpha parameter should be an integer between 0 (transparent) and | |
09e18d03 CY |
680 | 100 (opaque), or a float number between 0.0 and 1.0. It can also be a |
681 | cons cell (ACTIVE . INACTIVE), where ACTIVE is the opacity of an | |
540f3092 | 682 | active frame and INACTIVE is the opacity of non-active frames. |
55f9bad5 | 683 | |
09e18d03 CY |
684 | The variable `frame-alpha-lower-limit' defines a lower bound for the |
685 | opacity; the default is 20. | |
55f9bad5 | 686 | |
09e18d03 | 687 | ** Internationalization changes |
16e82271 | 688 | |
09e18d03 CY |
689 | *** The Emacs character set is now a superset of Unicode. |
690 | (It has about four times the code space, which should be plenty). | |
0a963185 | 691 | |
09e18d03 | 692 | The internal encoding used for buffers and strings is now |
16e82271 CY |
693 | Unicode-based and called `utf-8-emacs' (`emacs-internal' is an alias |
694 | for this). This encoding is backward-compatible with Unicode's UTF-8 | |
695 | encoding. The internal encoding previously used by Emacs, | |
696 | `emacs-mule', is still available for reading and writing files. | |
6dadd99f | 697 | |
09e18d03 CY |
698 | During byte-compilation, Emacs 23 uses `utf-8-emacs' to write files. |
699 | As a result, byte-compiled files containing non-ASCII characters can't | |
700 | be read by earlier versions of Emacs. Files compiled by Emacs 20, 21, | |
16e82271 CY |
701 | or 22 are loaded correctly as `emacs-mule' (whether or not they |
702 | contain multibyte characters). This takes somewhat more time, so it | |
703 | may be worth recompiling existing .elc files which don't need to be | |
704 | shared with older Emacsen. | |
3ae459e5 | 705 | |
09e18d03 | 706 | *** There are new coding systems/aliases; see M-x list-coding-systems. |
c2e8590b | 707 | |
09e18d03 CY |
708 | *** There is a new charset implementation with many new charsets. |
709 | See M-x list-character-sets. New charsets can be defined conveniently | |
710 | as tables of unicodes. | |
1abe3a1e | 711 | |
09e18d03 CY |
712 | *** There are new language environments for Chinese-GBK, |
713 | Chinese-GB18030, Khmer, Bengali, Punjabi, Gujarati, Oriya, Telugu, | |
714 | Sinhala, and TaiViet. | |
16e82271 | 715 | |
09e18d03 CY |
716 | *** The minor modes unify-8859-on-encoding-mode and |
717 | unify-8859-on-decoding-mode are obsolete. | |
16e82271 | 718 | |
e94d0645 JL |
719 | *** `ucs-insert' is bound to `C-x 8 RET' and in addition to hex numbers |
720 | accepts numbers in hash notation (e.g. #o21430 for octal, or #10r8984 for | |
721 | decimal). It also accepts Unicode character names with completion. | |
16e82271 | 722 | |
6d496c76 TZ |
723 | *** The `cyrillic-translit' input method supports many new characters. |
724 | Common typographical characters available from Unicode were added to | |
725 | `cyrillic-translit': punctuation marks, accented characters, fractions, | |
726 | and others. | |
727 | ||
09e18d03 | 728 | ** Emacs now supports serial port access on GNU/Linux, Unix, and |
81efacf9 CY |
729 | Windows. The new command `serial-term' starts an interactive terminal |
730 | on a serial port. The serial port can be configured at runtime with | |
731 | the mode-line mouse menu. | |
6c5d503f | 732 | |
09e18d03 | 733 | ** Menu Bar changes |
16e82271 | 734 | |
09e18d03 CY |
735 | *** In the Options menu, the "Set Default Font" item applies the |
736 | selected font to the `default' face on all frames, not just the | |
737 | current frame. Furthermore, if Emacs is compiled with both GTK and | |
738 | Fontconfig support, the "Set Default Font" item uses the GTK font | |
739 | selection dialog instead of an Emacs pop-up menu. | |
16e82271 | 740 | |
09e18d03 CY |
741 | *** The font setting chosen by "Set Default Font" is saved if the |
742 | "Save Options" item is used. | |
1b21ee06 | 743 | |
b350bdf2 CY |
744 | *** The Tools menu contains a new Encryption/Decryption submenu. |
745 | This contains commands provided by EasyPG, the newly-included | |
746 | interface to GnuPG (see New Modes and Packages). | |
16e82271 | 747 | |
81efacf9 CY |
748 | *** In the Options menu, the "Truncate Long Lines in the Buffer" entry |
749 | has been replaced with a submenu offering three different ways to | |
750 | handle long lines: truncation, continuation at the window edge, and | |
697f6b43 | 751 | the new word wrapping behavior (see Editing Changes, below). |
16e82271 | 752 | |
c1337511 DN |
753 | *** Improvements to menus for major and minor modes |
754 | More major and minor modes now have a mode specific menu, and existing | |
755 | mode menus have been improved to include more functionality. | |
756 | ||
09e18d03 | 757 | ** Mode-line changes |
16e82271 | 758 | |
09e18d03 CY |
759 | *** The mode-line displays a `@', instead of `-', if the |
760 | default-directory for the current buffer is on a remote machine. | |
16e82271 | 761 | |
09e18d03 CY |
762 | *** The mode-line displays a mode menu when mouse-1 is clicked on a |
763 | minor mode, in the same way as it already did for major modes. | |
16e82271 | 764 | |
09e18d03 CY |
765 | *** The `mode-line-emphasis' face is used to highlight certain |
766 | mode-line information (e.g. waiting for a VC command to finish). | |
16e82271 | 767 | |
c1337511 | 768 | *** The mode-line tooltips have been improved to provide more details. |
16e82271 | 769 | |
c1337511 DN |
770 | *** The VC, line/colum number and minor mode indicators on the mode |
771 | line are now interactive: mouse-1 can be used on them to pop up a menu. | |
772 | ||
b798e26a GM |
773 | ** File deletion can make use of the Recycle Bin or system Trash folder. |
774 | Set `delete-by-moving-to-trash' non-nil to use this. Deleted files | |
0956be4f | 775 | and directories will then be sent to the Recycle Bin on Windows, and |
b798e26a GM |
776 | to `trash-directory' on other systems. |
777 | ||
09e18d03 | 778 | ** Directory-local variables can now be defined. |
fc0318c6 JL |
779 | By default, Emacs looks in .dir-locals.el for directory-local |
780 | variables. For more information, see `dir-locals-set-directory-class' | |
781 | and `dir-locals-set-class-variables'. | |
307f3501 | 782 | |
b798e26a GM |
783 | ** Emacs can now use `auth-source' for authentication. |
784 | `smtpmail' and `url' (Tramp and Gnus also) use `auth-source' to obtain | |
785 | login names and passwords. The match, if found, is reported | |
786 | in *Messages* with the password blanked out. | |
787 | ||
788 | ** `where-is-preferred-modifier' can specify your favorite modifier. | |
789 | ||
6dadd99f | 790 | \f |
0bfd685e | 791 | * Startup Changes in Emacs 23.1 |
21f7b9d8 | 792 | |
3063e326 JL |
793 | ** The option `inhibit-startup-screen' (with aliases to old names |
794 | `inhibit-splash-screen' and `inhibit-startup-message') doesn't inhibit | |
795 | display of the initial message in the *scratch* buffer. If you don't | |
796 | want to display the initial message in the *scratch* buffer at startup, | |
797 | you can set the option `initial-scratch-message' to nil. | |
798 | ||
56e1896b JL |
799 | ** New user option `initial-buffer-choice' specifies what to display |
800 | after starting Emacs: startup screen, *scratch* buffer, visiting a | |
801 | file or directory. | |
802 | ||
aa5310e4 DK |
803 | ** New alias `argv' for `command-line-args-left' |
804 | This is a convenience alias, so that one can write `(pop argv)' | |
805 | inside of --eval command line arguments in order to access | |
806 | following arguments. | |
f8fd7ed3 GM |
807 | |
808 | ** The abbrev file is no longer read at startup in batch mode. | |
f36acfd9 EZ |
809 | |
810 | ** Emacs now supports invocation by an X session manager. | |
811 | It can save a session and restore it later. See the documentation of | |
812 | the functions `emacs-session-save' and `emacs-session-restore'. | |
813 | (Actually, this feature was introduced with Emacs 22, but it was not | |
814 | documented.) | |
c44da964 | 815 | \f |
0bfd685e | 816 | * Incompatible Editing Changes in Emacs 23.1 |
b58cb59f | 817 | |
d1949cd5 JL |
818 | ** In Dired, `dired-flag-garbage-files' is rebound from `&' to `%&' |
819 | on the regexp command prefix map. | |
820 | ||
117907d4 JL |
821 | ** In Dired-x, all command guesses for ! are now added to the default |
822 | list accessible by M-n instead of pushing all guesses temporarily into | |
823 | the history list. | |
824 | ||
e94d0645 JL |
825 | ** In Isearch mode, a special case of typing `C-w' at the beginning of |
826 | the minibuffer that toggles word search (i.e. using key sequences | |
827 | `C-s RET C-w' or `C-s M-e C-w') is obsolete. You can use the global key | |
828 | `M-s w' to start word search, or type `M-s w' in Isearch mode to | |
fd4c2a39 JL |
829 | toggle word search. To start nonincremental word search you can now use |
830 | `M-s w RET' and `M-s w C-r RET' instead of `C-s RET C-w' and `C-r RET C-w'. | |
e94d0645 | 831 | |
45ad1cc5 JL |
832 | ** In Info, `Info-search' is unbound from `M-s' to allow using `M-s w' |
833 | for word search as well as other search commands from the global prefix | |
834 | key `M-s'. `Info-search' is still bound to `s', and also incremental | |
835 | search commands `C-s', `C-M-s', `C-r', `C-M-r' are available for searching | |
836 | through multiple Info nodes, together with their nonincremental versions | |
837 | `C-s RET', `C-r RET', `C-M-s RET', `C-M-r RET', `M-s w RET'. | |
838 | ||
16e82271 CY |
839 | ** In Text mode, `center-line' and `center-paragraph' are rebound from |
840 | `M-s' and `M-S' to global keys `M-o M-s' and `M-o M-S' on the global | |
841 | prefix map `M-o', which is intended for such formatting commands. | |
4e14951f | 842 | |
e405fa5f | 843 | ** The following input methods were removed in Emacs 22.2, but this was |
9a930d75 | 844 | not advertised: danish-alt-postfix, esperanto-alt-postfix, |
e405fa5f RS |
845 | finnish-alt-postfix, german-alt-postfix, icelandic-alt-postfix, |
846 | norwegian-alt-postfix, scandinavian-alt-postfix, spanish-alt-postfix, | |
847 | and swedish-alt-postfix. Use the versions without "alt-", which are | |
848 | identical. | |
0b0914ae | 849 | |
406c0f12 | 850 | \f |
0bfd685e | 851 | * Editing Changes in Emacs 23.1 |
406c0f12 | 852 | |
0c8b58e9 CY |
853 | ** The C-n and C-p line-motion commands now move by screen lines, |
854 | taking continued lines and variable-width characters into account. | |
855 | Setting `line-move-visual' to nil reverts this to the previous | |
16e82271 CY |
856 | behavior (i.e., motion by logical lines based on buffer contents |
857 | alone). | |
0c8b58e9 | 858 | |
09e18d03 | 859 | ** C-x C-c now invokes `save-buffers-kill-terminal', and C-z now |
16e82271 | 860 | invokes `suspend-frame'. These changes are for compatibility with the |
09e18d03 | 861 | new multi-tty support (see `Improved X Window System support' above). |
3ae459e5 | 862 | |
09e18d03 | 863 | ** Mark changes |
16e82271 | 864 | |
3ae459e5 | 865 | *** Transient Mark mode is now on by default. |
16e82271 | 866 | |
3ae459e5 | 867 | *** mark-even-if-inactive now defaults to t |
16e82271 | 868 | |
b350bdf2 CY |
869 | *** When Transient Mark mode is on, C-SPC C-SPC pushes a mark without |
870 | activating it. | |
16e82271 | 871 | |
3ae459e5 CY |
872 | *** When Transient Mark mode is on, M-q now fills the region if the |
873 | region is active. Otherwise, it fills the current paragraph. | |
16e82271 | 874 | |
3ae459e5 CY |
875 | *** When Transient Mark mode is on, M-$ now checks spelling of the |
876 | region if the region is active. Otherwise, it checks spelling of the | |
dc868f13 | 877 | word at point. |
16e82271 | 878 | |
3ae459e5 CY |
879 | *** When Transient Mark mode is on, TAB now indents the region if the |
880 | region is active. | |
16e82271 CY |
881 | |
882 | *** The variable `use-empty-active-region' controls whether an empty | |
883 | active region in Transient Mark mode should make commands operate on | |
884 | that empty region. | |
3ae459e5 CY |
885 | |
886 | ** Temporarily active regions | |
16e82271 | 887 | |
3ae459e5 CY |
888 | *** The new variable shift-select-mode, non-nil by default, controls |
889 | shift-selection. When Shift Select mode is on, shift-translated | |
890 | motion keys (e.g. S-left and S-down) activate and extend a temporary | |
891 | region, similar to mouse-selection. | |
16e82271 | 892 | |
3ae459e5 CY |
893 | *** Temporarily active regions, created using shift-selection or |
894 | mouse-selection, are not necessarily deactivated in the next command. | |
895 | They are only deactivated after point motion commands that are not | |
896 | shift-translated, or after commands that would ordinarily deactivate | |
897 | the mark in Transient Mark mode (e.g., any command that modifies the | |
898 | buffer). | |
899 | ||
3307af6c | 900 | ** Minibuffer and completion changes |
16e82271 | 901 | |
206faa92 CY |
902 | *** Emacs may ask for confirmation before opening a non-existent file |
903 | or buffer. By default, Emacs requests confirmation if you type RET | |
904 | immediately after TAB, and the resulting input is not an existing file | |
905 | or buffer; this usually happens when the minibuffer input did not | |
906 | complete far enough and you entered RET by mistake. In that case, | |
907 | Emacs puts the message "[Confirm]" in the minibuffer; type RET again | |
908 | to create the file or buffer. | |
909 | ||
910 | The new variable confirm-nonexistent-file-or-buffer determines whether | |
911 | Emacs asks for confirmation. The default value is `after-completion'. | |
912 | If you change it to t, Emacs always asks for confirmation; if you | |
913 | change it to nil, Emacs never asks for confirmation. | |
16e82271 | 914 | |
aea75a87 CY |
915 | *** The rules for performing completion have been changed. |
916 | When generating completion alternatives, Emacs now takes the | |
917 | minibuffer text after point, if any, into account: this text is | |
918 | treated as a substring of the remaining part of the completion | |
919 | alternative (i.e., the part not matched by the minibuffer text before | |
920 | point). If no completion alternatives are found this way, Emacs | |
921 | attempts to perform partial-completion. If still no completion | |
922 | alternatives are found, we fall back on the Emacs 22 rules for | |
923 | performing completion. | |
924 | ||
925 | The new variable `completion-styles' can be customized to choose your | |
926 | favorite completion style. | |
16e82271 | 927 | |
d47a29c1 JL |
928 | *** When M-n in the minibuffer reaches the end of the list of defaults, |
929 | it adds the completion list to the end, so next M-n continues putting | |
930 | completion items to the minibuffer. The same principle applies to | |
931 | incremental search commands as well: C-s or C-M-s starts searching | |
932 | the default values and after the end of defaults they continue | |
933 | searching minibuffer completion items. | |
16e82271 | 934 | |
09e18d03 | 935 | *** Minibuffer input of shell commands now comes with completion. |
16e82271 | 936 | |
09e18d03 CY |
937 | *** In the `C-x d' (Dired) prompt, typing M-n gives the visited file |
938 | name of the current buffer. | |
dc2f6c05 | 939 | |
09e18d03 CY |
940 | *** In the M-! (shell-command) prompt, M-n provides some default commands. |
941 | These are guessed using the file extension of the current file, based | |
942 | on the file-handlers specified in the operating system's `mailcap' | |
943 | file. The ! command in Dired (dired-do-shell-command) works | |
944 | similarly, using the file displayed on the current line. | |
117907d4 JL |
945 | |
946 | *** A list of regexp default values is available via M-n for `occur', | |
947 | `keep-lines', `flush-lines' and `how-many'. This list includes the active | |
4f75e082 JL |
948 | region in transient-mark-mode, the word under the cursor, the last Isearch |
949 | regexp, the last Isearch string and the last replacement regexp. | |
16e82271 | 950 | |
3353f870 CY |
951 | *** When enable-recursive-minibuffers is non-nil, operations which use |
952 | switch-to-buffer (such as C-x b and C-x C-f) do not fail any more when | |
953 | used in a minibuffer or a dedicated window. Instead, they fallback on | |
954 | using pop-to-buffer, which will use some other window. This change | |
955 | has no effect when enable-recursive-minibuffers is nil (the default). | |
16e82271 | 956 | |
4f75e082 JL |
957 | *** Isearch started in the minibuffer searches in the minibuffer history. |
958 | Reverse Isearch commands (C-r, C-M-r) search in previous minibuffer | |
959 | history elements, and forward Isearch commands (C-s, C-M-s) search in | |
297b8ccd JL |
960 | next history elements. When the reverse search reaches the first history |
961 | element, it wraps to the last history element, and the forward search | |
962 | wraps to the first history element. When the search is terminated, the | |
963 | history element containing the search string becomes the current. | |
16e82271 | 964 | |
6c897494 CY |
965 | *** The variable read-file-name-completion-ignore-case overrides |
966 | completion-ignore-case for file name completion. | |
16e82271 | 967 | |
6c897494 CY |
968 | *** The variable read-buffer-completion-ignore-case overrides |
969 | completion-ignore-case for buffer name completion. | |
16e82271 | 970 | |
3307af6c CY |
971 | *** The new command `minibuffer-force-complete' chooses one of the |
972 | possible completions, rather than stopping at the common prefix. | |
16e82271 | 973 | |
3307af6c CY |
974 | *** If `completion-auto-help' is `lazy', Emacs shows the completions |
975 | buffer only on the second attempt to complete. This was already | |
976 | supported in `partial-completion-mode'. | |
6c897494 | 977 | |
505d8756 | 978 | ** Face changes |
16e82271 | 979 | |
b350bdf2 CY |
980 | *** S-down-mouse-1 now pops up a menu for changing the font and text |
981 | size of the default face in the current buffer. The face is changed | |
133c4dc5 | 982 | via face remapping (see Lisp changes, below). |
16e82271 | 983 | |
5f9e21a9 CY |
984 | *** New commands to change the default face size in the current buffer. |
985 | To increase it, type `C-x C-+' or `C-x C-='. To decrease it, type | |
986 | `C-x C--'. To restore the default (global) face size, type `C-x C-0'. | |
d59f7c45 CY |
987 | These work via Text Scale mode, a new minor mode. |
988 | ||
989 | The final key in the above commands may be repeated without the | |
990 | leading `C-x', e.g. `C-x C-= C-= C-=' increases the face height by | |
991 | three steps. Each step scales the height of the default face by the | |
992 | value of the variable `text-scale-mode-step'. | |
993 | ||
60959d23 CY |
994 | *** The commands buffer-face-mode and buffer-face-set can be used to |
995 | remap the default face in the current buffer. See "Buffer Face mode", | |
996 | under New Modes and Packages. | |
f20186fd | 997 | |
09e18d03 | 998 | ** Primary selection changes |
16e82271 | 999 | |
b350bdf2 CY |
1000 | *** You can disable kill ring commands from accessing the primary |
1001 | selection by setting `x-select-enable-primary' to nil. | |
2e282009 | 1002 | |
697f6b43 CY |
1003 | ** Continuation lines can now be wrapped at word boundaries |
1004 | (word-wrapping). This is controlled by the new per-buffer variable | |
1005 | `word-wrap'. Word wrapping does not take place if continuation lines | |
1006 | are not shown, e.g. if truncate-lines is non-nil. The most convenient | |
1007 | way to enable word-wrapping is using the new minor mode Visual Line | |
1008 | mode; in addition to setting `word-wrap' to t, this rebinds some | |
1009 | editing commands to work on screen lines rather than text lines. See | |
1010 | New Modes and Packages, below. | |
85b1de32 | 1011 | |
463c6766 | 1012 | ** Window management changes |
16e82271 | 1013 | |
463c6766 CY |
1014 | *** truncate-partial-width-windows now accepts integer values, which |
1015 | specify a minimum window width for partial-width windows, below which | |
7d09b7a6 | 1016 | lines are truncated. The default has been changed to 50. |
463c6766 CY |
1017 | |
1018 | *** The new command balance-windows-area balances windows both | |
1019 | vertically and horizontally. | |
16e82271 | 1020 | |
8f5cee6a MR |
1021 | *** pop-to-buffer now always sets input focus when the popped-to window |
1022 | is on a different frame. | |
1023 | ||
09e18d03 | 1024 | ** Miscellaneous changes: |
16e82271 | 1025 | |
09e18d03 CY |
1026 | *** C-l is bound to the new command recenter-top-bottom, rather than recenter. |
1027 | This moves the current line to window center, top and bottom on | |
cdc0338e | 1028 | successive invocations. |
16e82271 | 1029 | |
09e18d03 | 1030 | *** scroll-preserve-screen-position also preserves the column position. |
16e82271 | 1031 | |
09e18d03 CY |
1032 | *** If `yank-pop-change-selection' is t, rotating the kill ring also |
1033 | updates the selection or clipboard to the current yank, just as M-w | |
1034 | would do so with the text it copies to the kill ring. | |
16e82271 | 1035 | |
09e18d03 CY |
1036 | *** C-M-% now shows replacement as it would look in the buffer, with |
1037 | `\N' and `\&' substituted according to the match. Old behavior can be | |
1038 | restored by customizing `query-replace-show-replacement'. | |
1039 | ||
1040 | *** The command shell prompts for the default directory, when it is | |
1041 | called with a prefix and the default directory is a remote file name. | |
1042 | This is because some file name handlers (like ange-ftp) are not able to | |
1043 | run processes remotely. | |
16e82271 | 1044 | |
09e18d03 CY |
1045 | *** The new command kill-matching-buffers kills buffers whose name |
1046 | matches a regexp. | |
16e82271 | 1047 | |
ae98e41f CY |
1048 | *** The value of comment-style now defaults to `indent'. |
1049 | Thefore, comment-start markers are inserted at the current indentation | |
1050 | of the region to comment, rather than the leftmost column. | |
16e82271 | 1051 | |
b350bdf2 CY |
1052 | *** The new commands `pp-macroexpand-expression' and |
1053 | `pp-macroexpand-last-sexp' pretty-print macro expansions. | |
16e82271 | 1054 | |
018a960d EZ |
1055 | *** The new command `set-file-modes' allows to set file's mode bits. |
1056 | The mode bits can be specified in symbolic notation, like with GNU | |
e6979067 DN |
1057 | Coreutils, in addition to an octal number. `chmod' is a new |
1058 | convenience alias for this function. | |
d334fa1e | 1059 | |
d2c52e26 EZ |
1060 | *** `next-error-recenter' specifies how next-error should recenter the |
1061 | visited source file. Its value can be a number (for example, 0 for | |
1062 | top line, -1 for bottom line), or nil for no recentering. | |
16e82271 | 1063 | |
c594dbfa CY |
1064 | *** When typing in a password in the echo area, C-y yanks the current |
1065 | kill into the password. | |
16e82271 | 1066 | |
e02ec85e EZ |
1067 | *** Tooltip frame parameters `font' and `color' in `tooltip-frame-parameters' |
1068 | are ignored. Customize the `tooltip' face instead. | |
16e82271 | 1069 | |
53374291 | 1070 | *** `mkdir' is a new convenience alias for `make-directory'. |
09e18d03 CY |
1071 | \f |
1072 | * New Modes and Packages in Emacs 23.1 | |
e11910e2 GM |
1073 | |
1074 | ** Auto Composition Mode is a minor mode that composes characters | |
1075 | automatically when they are displayed. It is globally on by default. | |
1076 | It uses `auto-composition-function' (default `auto-compose-chars'). | |
1077 | ||
09e18d03 | 1078 | ** Bubbles, a new game, is similar to SameGame. |
60959d23 CY |
1079 | |
1080 | ** Buffer Face mode is a minor mode for remapping the default face in | |
1081 | the current buffer. The variable `buffer-face-mode-face' specifies | |
1082 | the face to remap to. The command `buffer-face-set' prompts for a | |
1083 | face name, sets `buffer-face-mode-face' to it, and enables | |
1084 | buffer-face-mode. See "Face changes", under Editing Changes, for a | |
1085 | description of face remapping. | |
1086 | ||
18e4b9bd JL |
1087 | ** butterfly flips the desired bit on the drive platter. |
1088 | See http://xkcd.com/378/ | |
f6b26818 | 1089 | |
7ef39c6e GM |
1090 | ** bug-reference.el provides clickable links to bug reports. |
1091 | ||
09e18d03 CY |
1092 | ** dbus.el provides D-Bus language bindings. |
1093 | D-Bus is an inter-process communication mechanism for applications | |
b350bdf2 | 1094 | residing on the same host. See the manual for details. |
09e18d03 | 1095 | |
85c78c0f | 1096 | ** DocView mode allows viewing of PDF, PostScript and DVI documents. |
b350bdf2 CY |
1097 | One can also search for a regular expression in the document. For |
1098 | details, see the commentary in doc-view.el. | |
09e18d03 | 1099 | |
4545a339 CY |
1100 | PDF and DVI files are now opened in Doc View mode by default. |
1101 | ||
1102 | In Postcript mode, C-c C-c launches Doc View minor mode for viewing | |
1103 | the postscript file. | |
5ed3edfa | 1104 | |
b350bdf2 CY |
1105 | ** EasyPG provides an interface to the GNU Privacy Guard (GnuPG). |
1106 | It includes a GnuPG keyring browser, cryptographic operations on | |
1107 | regions and files, and automatic encryption of *.gpg files. For | |
1108 | details, see the EasyPG Assistant User's Manual. | |
09e18d03 CY |
1109 | |
1110 | ** json.el is a library for parsing and generating JSON | |
1111 | (JavaScript Object Notation), a lightweight data-interchange format. | |
1112 | ||
1113 | ** linum.el is a new minor mode to display line numbers for the | |
1114 | current buffer. | |
1115 | ||
4b4eb083 CY |
1116 | ** mairix.el is an interface to mairix, a free tool for indexing and |
1117 | searching locally stored mail. It allows you to query mairix and | |
1118 | display the search results with Rmail, Gnus and VM. Note that there | |
1119 | is an existing Gnus back end, nnmairix.el, which should be used with | |
1120 | Maildir/MH setups. | |
1121 | ||
e94d0645 | 1122 | ** minibuffer-depth-indicate-mode shows the minibuffer depth in the prompt. |
09e18d03 CY |
1123 | |
1124 | ** nXML Mode | |
1125 | This is a new mode for editing XML documents. It allows a schema to | |
1126 | be associated with the XML document being edited, using Relax NG as | |
1127 | the schema language. The schema is used to provide two key features: | |
1128 | ||
1129 | *** Continuous validation. nXML validates as you type, highlighting | |
1130 | any invalid parts of your document. | |
1131 | ||
1132 | *** Completion. nXML can assist you in entering an element name, | |
1133 | attribute name or data value by using information about what is | |
1134 | allowed by the schema in that context. | |
1135 | ||
efdd80c6 DN |
1136 | ** proced.el provides a Dired-like interface for operating on |
1137 | processes. Proced makes an Emacs buffer containing a listing of the | |
1138 | current processes. You can use the normal Emacs commands to move | |
1139 | around in this buffer, and special Proced commands to operate on the | |
1140 | processes listed. It is currently only functional on GNU/Linux, | |
1141 | MS-Windows and Solaris. | |
09e18d03 CY |
1142 | |
1143 | ** Remember Mode is a mode for jotting down things to remember. | |
1144 | Notes can be saved to a Diary file. For details, see the Remember | |
1145 | Manual. | |
1146 | ||
b1c3a827 | 1147 | ** RST mode is a major mode for editing reStructuredText files. |
c2d0b538 | 1148 | |
17a937cc CY |
1149 | ** Ruby mode is a major mode for Ruby files. |
1150 | ||
12f165e9 CY |
1151 | ** Visual Line mode provides support for editing by visual lines. |
1152 | It turns on word-wrapping in the current buffer, and rebinds C-a, C-e, | |
1153 | and C-k to commands that operate by visual lines instead of logical | |
1154 | lines. This is a more reliable replacement for longlines-mode. | |
697f6b43 CY |
1155 | This can also be turned on using the menu bar, via |
1156 | Options -> Line Wrapping in this Buffer -> Word Wrap | |
12f165e9 | 1157 | |
0c68a24b MA |
1158 | ** xesam.el is an implementation of Xesam, an interface to (desktop) |
1159 | search engines like Beagle, Strigi, and Tracker. The Xesam API | |
1160 | requires D-Bus for communication. | |
1161 | ||
09e18d03 CY |
1162 | ** zeroconf.el offers service discovery and service publishing |
1163 | interfaces according to the zeroconf specification. It communicates | |
1164 | with Avahi, a zeroconf implementation, via D-Bus messages on systems | |
1165 | which have installed this software. | |
1166 | ||
d332a7a4 GM |
1167 | ** There is a new `whitespace' package. |
1168 | (The pre-existing one has been renamed to `old-whitespace'.) | |
1169 | Now, besides reporting bogus blanks, the whitespace package has a | |
1170 | minor mode and a global minor mode to visualize blanks (TAB, (HARD) | |
1171 | SPACE and NEWLINE). The visualization is made via faces and/or display | |
1172 | table. It can also indicate lines that extend beyond a given column, | |
1173 | trailing blanks, and empty lines at the start or end of a buffer. | |
1174 | See `whitespace-style' for more details. The `whitespace-action' option | |
1175 | specifies what to do when a buffer is visited, killed, or written. | |
4e5a8be9 | 1176 | |
09e18d03 CY |
1177 | \f |
1178 | * Changes in Specialized Modes and Packages in Emacs 23.1 | |
1179 | ||
1180 | ** Abbrev has been rewritten in Elisp and extended with more flexibility. | |
16e82271 | 1181 | |
e047f448 | 1182 | *** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put, |
da14b7ca | 1183 | abbrev-table-p, abbrev-insert, abbrev-table-menu. |
16e82271 | 1184 | |
e047f448 | 1185 | *** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'. |
16e82271 | 1186 | |
e047f448 | 1187 | *** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take |
da14b7ca | 1188 | extra arguments for arbitrary properties. |
16e82271 | 1189 | |
e047f448 | 1190 | *** New variable `abbrev-minor-mode-table-alist'. |
16e82271 | 1191 | |
e047f448 | 1192 | *** `local-abbrev-table' can hold a list of abbrev-tables. |
16e82271 | 1193 | |
e047f448 | 1194 | *** Abbrevs have now the following special properties: |
da14b7ca | 1195 | `:count', `:system', `:enable-function', `:case-fixed'. |
16e82271 | 1196 | |
e047f448 | 1197 | *** Abbrev-tables have now the following special properties: |
da14b7ca JB |
1198 | `:parents', `:case-fixed', `:enable-function', `:regexp', |
1199 | `abbrev-table-modiff'. | |
e047f448 | 1200 | |
09e18d03 | 1201 | ** Apropos |
16e82271 | 1202 | |
09e18d03 | 1203 | *** `apropos-library' describes the elements defined in a given library. |
16e82271 | 1204 | |
09e18d03 | 1205 | *** Set `apropos-compact-layout' is you want a more compact (but wider) layout. |
0253fffa | 1206 | |
09e18d03 | 1207 | ** Archive Mode has basic support to browse Rar archives. |
dfa2fb2a CY |
1208 | Note, however, that the free version of the unrar command only handles |
1209 | versions 1 and 2 of the Rar format. | |
0253fffa | 1210 | |
09e18d03 | 1211 | ** BibTeX mode |
bafbec39 | 1212 | |
09e18d03 | 1213 | *** New command `bibtex-initialize' (re)initializes BibTeX buffers. |
bafbec39 | 1214 | |
09e18d03 CY |
1215 | *** New `bibtex-entry-format' options `whitespace', `braces', and |
1216 | `string', disabled by default. | |
12bbb989 | 1217 | |
09e18d03 CY |
1218 | *** New variable `bibtex-cite-matcher-alist' contains rules to |
1219 | identify cited keys in BibTeX entries, used by `bibtex-find-crossref'. | |
9097e8af | 1220 | |
09e18d03 | 1221 | *** Command `bibtex-url' allows multiple URLs per entry. |
4c24d241 | 1222 | |
3aa8040c KF |
1223 | ** Bookmarks |
1224 | ||
1225 | *** bookmark.el saves bookmarks in a pre-Emacs-23-incompatible file format | |
1226 | bookmark.el can read a .emacs.bmk file saved by an older Emacs, but an | |
1227 | older Emacs cannot read one saved by Emacs 23. | |
1228 | ||
09e18d03 | 1229 | ** Calendar and diary |
320bc739 | 1230 | |
09e18d03 CY |
1231 | *** There is a new date style, `iso', essentially year/month/day. |
1232 | The variable `european-calendar-style' is obsolete - use `calendar-date-style'. | |
1233 | Similarly, the commands `american-calendar' and `european-calendar' | |
1234 | should be replaced by `calendar-set-date-style'. | |
c3bb6fdb | 1235 | |
09e18d03 CY |
1236 | *** The calendar namespace has been rationalized. |
1237 | All functions and variables now begin with a `calendar-', `diary-', or | |
1238 | `holiday-' prefix. The various calendar systems have secondary | |
1239 | prefixes, eg `calendar-french-'. The old names you are likely to use | |
1240 | directly still exist, for the time being, as aliases, but please start | |
1241 | using the new names. | |
1242 | ||
e889393b GM |
1243 | *** The whitespace in the calendar layout can be customized. |
1244 | See the variables: | |
1245 | calendar-left-margin, calendar-intermonth-spacing, calendar-column-width, | |
1246 | calendar-day-header-width, and calendar-day-digit-width. | |
1247 | ||
1248 | *** Text (e.g. ISO weeks) can be displayed between the calendar months. | |
1249 | See the variables calendar-intermonth-header and calendar-intermonth-text. | |
1250 | ||
09e18d03 CY |
1251 | *** The function `holiday-chinese' computes holidays on the Chinese calendar. |
1252 | It has been used to add items to the list `holiday-oriental-holidays'. | |
1253 | ||
1254 | *** `diary-remind' accepts a negative number -DAYS as a shorthand for | |
1255 | the list (1 2 ... DAYS). | |
24cdde13 | 1256 | |
a6b85944 CY |
1257 | ** Change Log mode |
1258 | ||
1259 | *** The new command C-c C-f (change-log-find-file) finds the file | |
1260 | associated with the current log entry. | |
1261 | ||
1262 | *** The new command C-c C-c (change-log-goto-source) goes to the | |
1263 | source code associated with a log entry. | |
1264 | ||
76be286d | 1265 | ** Compile and grep modes |
16e82271 | 1266 | |
76be286d DN |
1267 | *** The mode-line entry for the *compilation* and *grep* buffer is color coded. |
1268 | It has different colors for to show that: (a) the command is still | |
1269 | running, (b) successful completion, (c) error. | |
16e82271 | 1270 | |
76be286d | 1271 | *** compilation-auto-jump-to-first-error tells `compile' to jump to |
813fb3fe | 1272 | the first error encountered during compilations. |
16e82271 | 1273 | |
194894cb CY |
1274 | *** compilation-scroll-output accepts a new value, `first-error', which |
1275 | says to stop auto scrolling at the first error that occurs. | |
16e82271 | 1276 | |
0b22a5e1 | 1277 | *** The `cc' alias for C++ files in `grep-file-aliases' has been |
2e538385 | 1278 | improved. `hh' can be used to match C++ header files and `cchh' both |
0b22a5e1 DN |
1279 | C++ sources and headers. |
1280 | ||
d332a7a4 GM |
1281 | ** Copyright |
1282 | ||
1283 | *** You can specify your copyright holders' names. | |
1284 | Only copyright lines with holders matching `copyright-names-regexp' are | |
1285 | considered for update. | |
1286 | ||
1287 | *** Copyrights can be at the end of the buffer. | |
1288 | This is controlled by `copyright-at-end-flag' (used by, e.g., change-log-mode). | |
1289 | ||
09e18d03 | 1290 | ** Custom |
16e82271 | 1291 | |
09e18d03 | 1292 | *** defcustom accepts new keyword arguments, `:safe' and `:risky', which |
b68769f2 GM |
1293 | set a variable's `safe-local-variable' and `risky-local-variable' property. |
1294 | ||
09e18d03 | 1295 | ** Diff mode |
16e82271 | 1296 | |
09e18d03 CY |
1297 | *** diff-refine-hunk highlights word-level details of changes in a diff hunk. |
1298 | It's used automatically as you move through hunks, see | |
7381be9d | 1299 | diff-auto-refine-mode. It is bound to `C-c C-b'. |
16e82271 | 1300 | |
09e18d03 CY |
1301 | *** diff-add-change-log-entries-other-window iterates through the diff |
1302 | buffer and tries to create ChangeLog entries for each change. | |
1303 | It is bound to `C-x 4 A'. | |
16e82271 | 1304 | |
ac7020b3 DN |
1305 | *** Turning on `whitespace-mode' in a diff buffer will show trailing |
1306 | whitespace problems in the modified lines. | |
d332a7a4 | 1307 | |
71554a21 | 1308 | ** Dired |
16e82271 | 1309 | |
71554a21 JL |
1310 | *** In Dired, C-x C-q now runs the command wdired-change-to-wdired-mode, |
1311 | and C-x C-q in wdired-mode exits it with asking a question about | |
1312 | saving changes. | |
16e82271 | 1313 | |
d1949cd5 JL |
1314 | *** `&' runs the command `dired-do-async-shell-command' that executes |
1315 | the command asynchronously without the need to manually add ampersand | |
1316 | to the end of the command. Its output appears in the buffer `*Async Shell | |
1317 | Command*'. | |
16e82271 | 1318 | |
6d9f0d00 | 1319 | *** `M-s f C-s' and `M-s f M-C-s' run Isearch that matches only at file names. |
2cb5f8ed JL |
1320 | When a new user option `dired-isearch-filenames' is t, then even ordinary |
1321 | Isearch started with `C-s' and `C-M-s' matches only at file names in the | |
1322 | Dired buffer. When `dired-isearch-filenames' is `dwim' then activation of | |
1323 | file name Isearch depends on the position of point - if point is on a file | |
1324 | name initially, then Isearch matches only file names, otherwise it matches | |
1325 | everywhere in the Dired buffer. You can toggle file names matching on or | |
1326 | off by typing `M-s f' in Isearch mode. | |
16e82271 | 1327 | |
cc3236e1 JL |
1328 | *** `M-s a C-s' and `M-s a M-C-s' run multi-file Isearch on the marked files. |
1329 | They visit the first marked file in the sequence and display the usual Isearch | |
1330 | prompt for a string or a regexp where all Isearch commands are available. | |
16e82271 | 1331 | |
71554a21 JL |
1332 | *** `Q' in Dired provides two new keys for multi-file replacement. |
1333 | The upper case key `Y' replaces all remaining matches in all remaining files | |
1334 | with no more questions. The upper case key `N' stops doing replacements | |
1335 | in the current file and skips to the next file. These multi-file keys | |
1336 | are available for all commands that use `tags-query-replace' | |
1337 | including `dired-do-query-replace-regexp', `vc-dir-query-replace-regexp', | |
1338 | `reftex-query-replace-document'. | |
1339 | ||
09e18d03 | 1340 | ** Fortran |
16e82271 | 1341 | |
77a00355 GM |
1342 | *** The line length of fixed-form Fortran is not fixed at 72 any more. |
1343 | Customize the variable `fortran-line-length' to change it. | |
117d3cc5 | 1344 | |
09e18d03 CY |
1345 | *** In Fortran mode, M-; is now bound to the standard comment-dwim, |
1346 | rather than fortran-indent-comment. | |
76be286d | 1347 | |
09e18d03 | 1348 | *** (The increasingly misnamed) F90 mode supports Fortran 2003 syntax. |
b592c357 | 1349 | |
09e18d03 | 1350 | ** Gnus |
6653c6b7 | 1351 | |
09e18d03 CY |
1352 | *** The Gnus package has been updated |
1353 | There are many news features, bug fixes and improvements; see the file | |
1354 | GNUS-NEWS or the node "No Gnus" in the Gnus manual for details. | |
db86064f | 1355 | |
09e18d03 CY |
1356 | *** In Emacs 23, Gnus uses Emacs' new internal coding system `utf-8-emacs' for |
1357 | saving articles drafts and ~/.newsrc.eld. These file may not be read | |
1358 | correctly in Emacs 22 and below. If you want to Gnus across different Emacs | |
1359 | versions, you may set `mm-auto-save-coding-system' to `emacs-mule'. | |
15947a44 | 1360 | |
540f3092 | 1361 | *** Passwords are consistently loaded through `auth-source' |
6d496c76 TZ |
1362 | Gnus can use `auth-source' for POP and IMAP passwords. Also see that |
1363 | `smtpmail' and `url' support `auth-source' for SMTP and HTTP/HTTPS/RSS | |
1364 | authentication respectively. | |
1365 | ||
09e18d03 | 1366 | ** Help mode |
16e82271 | 1367 | |
09e18d03 CY |
1368 | *** New macro `with-help-window' should set up help windows better |
1369 | than `with-output-to-temp-buffer' with `print-help-return-message'. | |
8f5cee6a | 1370 | |
09e18d03 CY |
1371 | *** New option `help-window-select' permits to customize whether help |
1372 | window shall be automatically selected when invoking help. | |
8f5cee6a | 1373 | |
540f3092 GM |
1374 | *** New variable `help-window-point-marker' permits one to specify a new |
1375 | position for point in help window (for example in `view-lossage'). | |
15947a44 | 1376 | |
09e18d03 | 1377 | ** Isearch |
16e82271 | 1378 | |
4f75e082 JL |
1379 | *** New command `isearch-forward-word' bound globally to `M-s w' starts |
1380 | incremental word search. New command `isearch-toggle-word' bound to the | |
1381 | same key `M-s w' in Isearch mode toggles word searching on or off | |
1382 | while Isearch is active. | |
1383 | ||
1384 | *** New command `isearch-highlight-regexp' bound to `M-s h r' in Isearch | |
1385 | mode runs `highlight-regexp' (`hi-lock-face-buffer') with the current | |
1386 | search string as its regexp argument. The same key `M-s h r' and | |
1387 | other keys on the `M-s h' prefix are bound globally to the command | |
1388 | `highlight-regexp' and other hi-lock commands. | |
16e82271 | 1389 | |
4f75e082 JL |
1390 | *** New command `isearch-occur' bound to `M-s o' in Isearch mode |
1391 | runs `occur' with the current search string. The same key `M-s o' | |
1392 | is bound globally to the command `occur'. | |
16e82271 | 1393 | |
4f75e082 JL |
1394 | *** Isearch can now search through multiple ChangeLog files. |
1395 | When running Isearch in a ChangeLog file, if the search fails, | |
09e18d03 | 1396 | then another C-s tries searching the previous ChangeLog, |
540f3092 | 1397 | if there is one (e.g. going from ChangeLog to ChangeLog.12). |
babc4609 | 1398 | This is enabled if multi-isearch-search is non-nil. |
93a142e1 | 1399 | |
babc4609 | 1400 | *** Two new commands to start Isearch on a list of marked buffers |
cc3236e1 JL |
1401 | for buff-menu.el and ibuffer.el are bound to the keys `M-s a C-s' and |
1402 | `M-s a M-C-s'. | |
16e82271 | 1403 | |
3c241617 CY |
1404 | *** The part of an Isearch that failed to match is highlighted in |
1405 | `isearch-fail' face. | |
5d503af9 | 1406 | |
4f75e082 JL |
1407 | *** `C-h C-h' in Isearch mode displays isearch-specific Help screen, |
1408 | `C-h b' displays all Isearch key bindings, `C-h k' displays the full | |
1409 | documentation of the given Isearch key sequence, `C-h m' displays | |
1410 | documentation of Isearch mode. All the rest Help commands exit Isearch mode | |
09e18d03 | 1411 | and execute their global definitions. |
16e82271 | 1412 | |
09e18d03 CY |
1413 | *** When started in the minibuffer, Isearch searches in the minibuffer |
1414 | history. See `Minibuffer changes', above. | |
2793c9bb | 1415 | |
66863844 | 1416 | ** MH-E |
1e9b0fb2 | 1417 | |
d1d87851 | 1418 | *** Upgraded to MH-E version 8.2. See MH-E-NEWS for details. |
66863844 | 1419 | |
09e18d03 CY |
1420 | ** Python |
1421 | *** The file etc/emacs.py now supports both Python 2 and 3, meaning | |
1422 | that either version can be used as inferior Python by python.el. | |
c5578d5f | 1423 | |
09e18d03 CY |
1424 | *** Python mode now has `pdbtrack' functionality. When using pdb to |
1425 | debug a Python program, pdbtrack notices the pdb prompt and displays | |
1426 | the source file and line that the program is stopped at, much the same | |
1427 | way as gud-mode does for debugging C programs with gdb. | |
2793c9bb | 1428 | |
1e9b0fb2 MA |
1429 | ** Recentf |
1430 | ||
1431 | *** The default value of `recentf-keep' prevents from checking of | |
1432 | remote files, if there is no established connection to the | |
1433 | corresponding remote host. | |
1434 | ||
2d51ab64 GM |
1435 | ** Rmail |
1436 | ||
b55b134f | 1437 | *** Rmail no longer converts the messages to Babyl format. |
33b43245 GM |
1438 | Instead, it uses UNIX mbox format, both on disk and in Rmail buffers, |
1439 | and does conversion and decoding when a message is displayed. | |
b55b134f | 1440 | |
33b43245 | 1441 | The first time you visit an Rmail file in Babyl format, Rmail |
b55b134f EZ |
1442 | automatically converts it to mbox format. This is a one-time |
1443 | conversion, but it can take a few minutes, depending on how fast is | |
1444 | your machine and on the size of the file. You should find the rest of | |
1445 | Rmail usage unaltered. | |
1446 | ||
80d634b8 RS |
1447 | However, M-x set-rmail-inbox-list now lasts only for one session |
1448 | because there is no way to save the list of inbox files in an | |
1449 | mbox-format file. | |
1450 | ||
329a643c GM |
1451 | Also, whereas with Babyl format M-x find-file would switch to Rmail |
1452 | mode, with mbox format this is no longer the case (there being no way | |
bcf3f1f5 GM |
1453 | to add an "-*- rmail-*-" cookie to an mbox file). Use C-u M-x rmail |
1454 | instead. | |
329a643c | 1455 | |
33b43245 GM |
1456 | If you have written any extensions to Rmail, they are likely to need |
1457 | updating. Conceptually, the Rmail buffer that you see is no longer | |
1458 | just a narrowed portion of the whole. So you cannot access the whole | |
1459 | of a message (or message collection) by a simple save-restriction and | |
1460 | widen. Instead, there are two buffers: the rmail-buffer, and the | |
2e538385 | 1461 | rmail-view-buffer. The former is the buffer that you see, the latter |
33b43245 GM |
1462 | is invisible. Most of the time, the invisible `view' buffer contains |
1463 | the full contents of the Rmail file, and the Rmail buffer contains a | |
1464 | decoded copy of the current message (with only a subset of the | |
2e538385 | 1465 | headers). In this state, Rmail is said to be `swapped'. |
2d51ab64 | 1466 | |
33b43245 GM |
1467 | You may find the following functions useful: |
1468 | ||
1469 | `rmail-get-header' and `rmail-set-header' get or set the value of a | |
1470 | message header, whether or not it is currently visible. | |
1471 | ||
1472 | `rmail-apply-in-message' is a general purpose function that calls a | |
1473 | function (with arguments) which you specify on the full text of a given | |
1474 | message. To further narrow to just the headers, search forward for "\n\n". | |
1475 | ||
33b43245 | 1476 | *** The new command `rmail-mime' displays MIME messages. |
2e538385 | 1477 | It is bound to `v' in Rmail buffers and summaries. It displays plain |
33b43245 GM |
1478 | text and multipart messages in a temporary buffer, and offers buttons |
1479 | to save attachments. | |
1480 | ||
763e01c4 EZ |
1481 | *** The command `rmail-redecode-body' no longer accepts the optional arg RAW. |
1482 | Since Rmail now holds messages in their original undecoded form in a | |
1483 | separate buffer, `rmail-redecode-body' no longer encodes the original | |
1484 | message, and therefore there should be no need to avoid encoding it. | |
1485 | ||
80d634b8 RS |
1486 | *** The o command is now `rmail-output'. It is an all-purpose command |
1487 | for copying messages from Rmail and appending them to files. It | |
1488 | handles Babyl-format files as well as mbox-format files, and it | |
1489 | handles both kinds properly when they are visited in Emacs. It always | |
1490 | copies the full headers of the message. | |
1491 | ||
80d634b8 RS |
1492 | *** The C-o command is now `rmail-output-as-seen'. It uses |
1493 | the message as displayed, appending it to an mbox file. | |
1494 | ||
2e538385 GM |
1495 | *** The modified status of the Rmail buffer is reported in the mode-line. |
1496 | Previously, this information was hidden. | |
1497 | ||
9721264a | 1498 | ** TeX modes |
16e82271 | 1499 | |
9721264a MR |
1500 | *** New option latex-indent-within-escaped-parens |
1501 | permits to customize indentation of LaTeX environments delimited | |
1502 | by escaped parens. | |
1503 | ||
09e18d03 | 1504 | ** T-mouse Mode |
16e82271 | 1505 | |
09e18d03 CY |
1506 | *** If the gpm mouse server is running and t-mouse-mode is enabled, |
1507 | Emacs uses a Unix socket in a GNU/Linux console to talk to server, | |
1508 | rather than faking events using the client program mev. This C level | |
1509 | approach provides mouse highlighting and help echoing in the | |
1510 | minibuffer. | |
2793c9bb | 1511 | |
cc213f24 MA |
1512 | ** Tramp |
1513 | ||
1514 | *** New connection methods. | |
1515 | The new methods "plinkx", "plink2", "psftp", "sftp" and "fish" have | |
1516 | been introduced. There are also new so-called gateway methods | |
1517 | "tunnel" and "socks". | |
1518 | ||
cc2fc5a2 MA |
1519 | *** IPv6 addresses. |
1520 | IPv6 addresses are supported now as host names. They must be embedded | |
1521 | in square brackets, like in "/ssh:[::1]:". | |
1522 | ||
cc213f24 | 1523 | *** Multihop syntax has been removed. |
540f3092 | 1524 | The pseudo-method "multi" has been removed. Instead, multi hops |
cc213f24 MA |
1525 | can be specified by the new variable `tramp-default-proxies-alist'. |
1526 | ||
1527 | *** More default settings. | |
1528 | Default values can be set via the variables `tramp-default-user', | |
1529 | `tramp-default-user-alist' and `tramp-default-host'. | |
1530 | ||
1531 | *** Connection information is cached. | |
1532 | In order to reduce connection setup, information about used | |
540f3092 | 1533 | connections is kept persistently in a file. The name of this file is |
cc213f24 MA |
1534 | defined in the variable `tramp-persistency-file-name'. |
1535 | ||
1536 | *** Control of remote processes. | |
1537 | Running processes on a remote host can be controlled by settings in | |
1538 | `tramp-remote-path' and `tramp-remote-process-environment'. | |
1539 | ||
1540 | *** Success of remote copy is checked. | |
1541 | When the variable `file-precious-flag' is set, the success of a remote | |
1542 | file copy is checked via the file's checksum. | |
1543 | ||
7cba69f2 MA |
1544 | *** Passwords can be read from an authentification file. |
1545 | Tramp uses the package `auth-source' to read passwords from a file, if | |
1546 | necessary. | |
1547 | ||
289aee1c | 1548 | ** VC and related modes |
16e82271 | 1549 | |
09e18d03 CY |
1550 | *** VC now supports applying VC operations to a set of files at a time. |
1551 | This enables VC to work much more effectively with changeset-oriented | |
1552 | version-control systems such as Subversion, GNU Arch, Mercurial, Git | |
1553 | and Bzr. VC will now pass a multiple-file commit to these systems as | |
1554 | a single changeset. | |
16e82271 | 1555 | |
09e18d03 | 1556 | *** vc-dir is a new command that displays file names and their VC |
289aee1c DN |
1557 | status. It allows to apply various VC operations to a file, a |
1558 | directory or a set of files/directories. | |
16e82271 | 1559 | |
614677a0 GM |
1560 | *** VC switches are no longer appended, rather the first non-nil value is used. |
1561 | (This was for the most part true in Emacs 22, but was not advertised). | |
1562 | This is because there is an increasing variety of VC systems, and they | |
1563 | do not all accept the same "common" options. For example, a CVS diff | |
1564 | command used to append the values of `vc-cvs-diff-switches', | |
1565 | `vc-diff-switches', and `diff-switches'. Now the first non-nil value | |
1566 | from that sequence is used. The special value `t' means "no switches". | |
16e82271 | 1567 | |
09e18d03 | 1568 | *** Clicking on the VC mode-line entry now pops the VC menu. |
16e82271 | 1569 | |
09e18d03 | 1570 | *** The VC mode-line entry now has a tooltip that explains the VC file status. |
2b69181c DN |
1571 | |
1572 | *** In VC Annotate mode, the key bindings have changed to use lower | |
1573 | case keys instead of the upper case keys used in the past. | |
16e82271 | 1574 | |
09e18d03 CY |
1575 | *** In VC Annotate mode, for VC systems that support changesets, you can |
1576 | see the diff for the whole changeset (not only for the current file) | |
ee0f0556 CY |
1577 | by typing the D key. Using the "Show changeset diff of revision at |
1578 | line" menu entry does the same thing. | |
16e82271 | 1579 | |
e86fa02b | 1580 | *** In VC Annotate mode, you can type v to toggle the annotation visibility. |
16e82271 | 1581 | |
09e18d03 CY |
1582 | *** In VC Annotate mode, you can type f to show the file revision on |
1583 | the current line. | |
16e82271 | 1584 | |
09e18d03 CY |
1585 | *** Asynchronous VC commands display [Waiting...] in the mode-line |
1586 | of the corresponding buffer as long as the asynchronous process is | |
1587 | active. | |
16e82271 | 1588 | |
09e18d03 CY |
1589 | *** Log entries can be modified using the key "e" in log-view. |
1590 | For now only CVS, RCS, SCCS and SVN support this functionality. | |
1591 | This is done by the `modify-change-comment' backend function. | |
16e82271 | 1592 | |
09e18d03 CY |
1593 | *** In log-view-mode, for VC systems that support changesets, you can |
1594 | see the diff for the whole changeset (not only for the current file) | |
1595 | by typing the D key or using the "Changeset Diff" menu entry. | |
16e82271 | 1596 | |
289aee1c DN |
1597 | *** In Log Edit mode, C-c C-d now shows the diff for the files involved. |
1598 | ||
1599 | *** vc-git supports the "git grep" command. | |
16e82271 | 1600 | |
540f3092 | 1601 | *** VC Support for Meta-CVS has been removed for lack of a maintainer able |
09e18d03 | 1602 | to update it to the new VC. |
cf944fa4 | 1603 | |
d15f7b68 GM |
1604 | ** Miscellaneous |
1605 | ||
1606 | *** comint-mode uses `start-file-process' now (see Lisp Changes). | |
cc213f24 MA |
1607 | If `default-directory' is a remote file name, subprocesses are started |
1608 | on the corresponding remote system. | |
16e82271 | 1609 | |
09e18d03 CY |
1610 | *** Eldoc highlights the function argument under point |
1611 | with the face `eldoc-highlight-function-argument'. | |
16e82271 | 1612 | |
09e18d03 | 1613 | *** In Etags, the --members option is now the default. |
fffa137c | 1614 | Use --no-members if you want the old default behavior of not tagging |
09e18d03 | 1615 | struct members in C, members variables in C++ and variables in PHP. |
16e82271 | 1616 | |
09e18d03 CY |
1617 | *** The `gdb' command only works with the graphical interface now. |
1618 | Use `gud-gdb' if you want the (old) text command mode. | |
1619 | ||
1620 | *** goto-address.el provides two new minor modes, goto-address-mode and | |
1621 | goto-address-prog-mode, which buttonize URLS and email addresses. | |
1622 | ||
1623 | *** The new command `eshell/info' runs info in an eshell buffer. | |
3cf86f00 | 1624 | |
4d1e89e3 GM |
1625 | *** The new variable `ffap-rfc-directories' specifies a list of local |
1626 | directories in which `ffap-rfc' will first search for RFCs. | |
16e82271 | 1627 | |
09e18d03 CY |
1628 | *** hide-ifdef-mode allows shadowing ifdef-blocks instead of hiding them. |
1629 | See option `hide-ifdef-shadow' and function `hide-ifdef-toggle-shadowing'. | |
1630 | ||
1631 | *** `icomplete-prospects-height' now supercedes `icomplete-prospects-length'. | |
1632 | ||
1633 | *** Info displays breadcrumbs in the header of the page. | |
1634 | See Info-breadcrumbs-depth to control it. | |
1635 | ||
d2c98acc | 1636 | *** net-utils has an `iwconfig' command, similar to the existing `ifconfig'. |
b7bfcc8a | 1637 | It is used to configure wireless interfaces. |
d2c98acc | 1638 | |
09e18d03 CY |
1639 | *** The pcmpl-unix package supports hostname completion for ssh and scp. |
1640 | ||
1641 | *** sgml-electric-tag-pair-mode lets you simultaneously edit matched tag pairs. | |
1642 | ||
1643 | *** smerge-refine highlights word-level details of changes in conflict. | |
7381be9d TTN |
1644 | It's used automatically as you move through conflicts, see |
1645 | smerge-auto-refine-mode. | |
09e18d03 CY |
1646 | |
1647 | *** talk.el has been extended for multiple tty support. | |
1648 | ||
1649 | *** A new command `display-time-world' has been added to the Time | |
1650 | package. It creates a buffer with an updating time display using | |
1651 | several time zones. | |
1652 | ||
1653 | *** The appearance of superscript and subscript in TeX is more customizable. | |
1654 | See the documentation of the variables: tex-fontify-script, | |
1655 | tex-font-script-display, tex-suscript-height-ratio, and | |
1656 | tex-suscript-height-minimum. | |
1657 | ||
1658 | *** view-remove-frame-by-deleting is now by default t | |
1659 | since users found iconification of view-mode frames distracting. | |
16e82271 | 1660 | |
09e18d03 CY |
1661 | *** WoMan tries to add locale-specific manual page directories to the |
1662 | search path. This can be disabled by setting `woman-locale' to nil. | |
1663 | ||
0bfd685e GM |
1664 | \f |
1665 | * Changes in Emacs 23.1 on non-free operating systems | |
8ab314f9 | 1666 | |
203553fd JPW |
1667 | ** Case is now considered significant in completion on MS-Windows. |
1668 | The default value of `completion-ignore-case' is now nil on | |
1669 | MS-Windows, the same as it is for other operating systems. The | |
1670 | variable doesn't apply to reading a file name -- in that case Emacs | |
1671 | heeds `read-file-name-completion-ignore-case' instead. | |
1672 | ||
672f99b6 JR |
1673 | ** IPv6 is supported on MS-Windows. |
1674 | Emacs now supports IPv6 on Windows XP and later, and earlier versions | |
2660a9da | 1675 | of Windows with third party IPv6 stacks installed. In Emacs 22, IPv6 was |
672f99b6 JR |
1676 | supported on other platforms, but not on Windows due to using the winsock |
1677 | 1.1 header file, even though Emacs was linking to the winsock 2 library. | |
1678 | ||
6e344060 JR |
1679 | ** Busy cursor (hourglass) now displays on MS-Windows. |
1680 | When Emacs is busy, an hourglass mouse cursor is displayed on Windows. | |
2660a9da JR |
1681 | In Emacs 22 only X supported the busy cursor. |
1682 | ||
2660a9da JR |
1683 | ** Battery status is available on MS-Windows |
1684 | Emacs can now display the battery status in the mode-line when enabled with | |
1685 | display-battery-mode or from the Options menu. More verbose battery | |
1686 | information is also available with the command `battery'. In Emacs 22 | |
1687 | battery status was supported only on GNU/Linux and Mac. | |
6e344060 | 1688 | |
3280c5c5 JR |
1689 | ** More keys available on MS-Windows. |
1690 | Keys normally associated with IMEs, and some exotic keys not normally found | |
1691 | on standard keyboards have been given names so they can be bound to functions | |
1692 | inside Emacs. If there are keys on your keyboard that have not been exposed | |
1693 | to Emacs in the past, try C-h k to see if they are available now. | |
1694 | ||
1695 | Emacs can now bind functions to the extra buttons for media player and | |
1696 | browser control present on some keyboards. These buttons are disabled | |
1697 | by default, since enabling them prevents their system-wide use when | |
1698 | Emacs has focus. To enable them, set the variable | |
0caa490b | 1699 | w32-pass-multimedia-buttons to nil. See the doc string of that variable |
3280c5c5 | 1700 | for the list of extra keys that are available. |
2660a9da | 1701 | |
4a263588 | 1702 | ** BDF fonts no longer supported on MS-Windows. |
2e538385 | 1703 | The font backend was completely rewritten for this release. The focus |
4a263588 JR |
1704 | on Windows has been getting acceptable performance and full unicode |
1705 | support, including complex script shaping for native Windows fonts. A | |
1706 | rewrite of the BDF font support has not happened due to lack of time | |
1707 | and developers. If demand still exists for such a backend even with | |
1708 | the improved language support for native Windows fonts, future | |
1709 | development in this direction will most likely be based on the | |
1710 | freetype library, giving access to a wider range of font formats. | |
1711 | ||
0bfd685e GM |
1712 | \f |
1713 | * Incompatible Lisp Changes in Emacs 23.1 | |
8ec65cd7 | 1714 | |
fd9440c5 | 1715 | ** Variables cannot be both buffer-local and frame-local any more. |
a9b08254 | 1716 | |
fc944cd4 | 1717 | ** `functionp' returns nil for special forms. |
65f81a0b | 1718 | I.e., it only returns t for objects that can be passed to `funcall'. |
fc944cd4 | 1719 | |
d82c3d44 GM |
1720 | ** The behavior of map-char-table has changed. It may call the |
1721 | specified function with a cons (FROM . TO) as a key if characters in | |
1722 | that range have the same value. | |
1723 | ||
b350bdf2 | 1724 | ** Process changes |
16e82271 | 1725 | |
b350bdf2 | 1726 | *** The function `dired-call-process' has been removed. |
16e82271 | 1727 | |
b350bdf2 CY |
1728 | *** The multibyteness of process filters is now determined by the |
1729 | coding-system used for decoding. The functions | |
1730 | `process-filter-multibyte-p' and `set-process-filter-multibyte' are | |
1731 | obsolete. | |
03605a28 | 1732 | |
777ea444 | 1733 | ** The variable `byte-compile-warnings' can now be a list starting with `not', |
0caa490b | 1734 | meaning to disable the specified warnings. The meaning of this list |
777ea444 | 1735 | may therefore be the reverse of what you expect (of course, this is |
0caa490b | 1736 | only an issue if you make use of the new `not' syntax). Rather than |
777ea444 GM |
1737 | checking/manipulating elements directly, use the new functions |
1738 | `byte-compile-warning-enabled-p', `byte-compile-disable-warning', and | |
1739 | `byte-compile-enable-warning.' | |
1740 | ||
69df9d6d GM |
1741 | ** `mode-name' is no longer guaranteed to be a string. |
1742 | Use `(format-mode-line mode-name)' to ensure a string value. | |
1743 | ||
53ed745a CY |
1744 | ** The function x-font-family-list has been removed. |
1745 | Use the new function font-family-list (see Lisp Changes, below). | |
1746 | ||
b350bdf2 CY |
1747 | ** Internationalization changes |
1748 | ||
1749 | *** The value of the function `charset-id' is now always 0. | |
16e82271 | 1750 | |
b350bdf2 CY |
1751 | *** The functions `register-char-codings' and `coding-system-spec' |
1752 | have been removed. | |
16e82271 | 1753 | |
b350bdf2 CY |
1754 | *** The cpXXX coding systems are now supported automatically. |
1755 | The functions cp-...-codepage, which you had to use in Emacs 22 to | |
1756 | enable support for these coding systems, have been deleted. | |
16e82271 | 1757 | |
b350bdf2 | 1758 | *** The following features have been removed. They were used for |
85a1f98d GM |
1759 | displaying various scripts with specific fonts, and are no longer |
1760 | needed now that OpenType font support is available: | |
1761 | ||
b350bdf2 | 1762 | **** `devanagari' and `devan-util', and all associated devanagari-* and |
85a1f98d GM |
1763 | dev-* functions and variables (formerly used for Devanagari script). |
1764 | ||
b350bdf2 | 1765 | **** `kannada' and `knd-util', and all associated kannada-* and knd-* |
85a1f98d GM |
1766 | functions and variables (formerly used for Kannada script). |
1767 | ||
b350bdf2 | 1768 | **** `malayalam' and `mlm-util', and all associated malayalam-* and |
85a1f98d GM |
1769 | mlm-* functions and variables (formerly used for Malayalam script). |
1770 | ||
b350bdf2 | 1771 | **** `tamil' and `tml-util, and all associated tamil-* and tml-* |
85a1f98d | 1772 | functions and variables (formerly used for Tamil script). |
6a6b4d7d | 1773 | |
2d2db320 KH |
1774 | *** The meaning of NAME argument of `set-fontset-font' is changed. |
1775 | Previously nil is accepted as the default fontset. Now, nil is for | |
1776 | the fontset of the selected frame and t is for the default fontset. | |
1777 | ||
1778 | *** The meaning of FONTSET argument of `print-fontset' is changed. | |
1779 | Now, nil is for the fontset of the selected frame and t is for the | |
1780 | default fontset. | |
1781 | ||
16e82271 CY |
1782 | ** If a function in write-region-annotate-functions returns with a |
1783 | different buffer current, Emacs no longer kills that buffer | |
1784 | automatically. This behavior existed in previous versions of Emacs, | |
1785 | but was undocumented. To kill a buffer after write-region, give the | |
1786 | variable `write-region-post-annotation-function' a buffer-local value | |
1787 | of `kill-buffer'. | |
1788 | ||
55504ada | 1789 | ** The variable temp-file-name-pattern has been removed. |
f4150f61 CY |
1790 | This variable was only used by call-process-region, which now uses |
1791 | temporary-file-directory instead. | |
1792 | ||
52456e59 CY |
1793 | ** The COUNT and SYSTEM-FLAG arguments to define-abbrev have been |
1794 | removed. The function now takes extra arguments for specifying | |
1795 | arbitrary abbrev properties. | |
1796 | ||
7841339b AM |
1797 | ** end-of-defun-function is now guaranteed to work only when called |
1798 | from the start of a defun. It must now leave point exactly at the end | |
1799 | of defun, since `end-of-defun' now itself moves forward over | |
1800 | whitespace after calling it. | |
1801 | ||
0bfd685e GM |
1802 | \f |
1803 | * Lisp Changes in Emacs 23.1 | |
8ab314f9 | 1804 | |
b8afe7e4 EZ |
1805 | ** The new variable `generate-autoload-cookie' controls the magic comment |
1806 | string used by `update-file-autoloads' to find autoloaded forms. The | |
1807 | variable `generated-autoload-file' similarly controls the name of the | |
1808 | file where `update-file-autoloads' writes the calls to `autoload'. | |
1809 | The default values are ";;;###autoload" and `loaddefs.el', | |
1810 | respectively. | |
1811 | ||
a20878b6 | 1812 | ** New primitives `list-system-processes' and `process-attributes' |
5d692341 EZ |
1813 | let Lisp programs access the processes that are running on the local |
1814 | machine. See the doc strings of these functions for more details. | |
1815 | Not all platforms support accessing this information; on those that | |
1816 | don't, these primitives will return nil. | |
1817 | ||
b350bdf2 CY |
1818 | ** New variable `user-emacs-directory'. |
1819 | Use this instead of "~/.emacs.d". | |
43f8b275 | 1820 | |
b350bdf2 CY |
1821 | ** If a local hook function has a non-nil `permanent-local-hook' |
1822 | property, `kill-all-local-variables' does not remove it from the local | |
1823 | value of the hook variable; it remains even if you change major modes. | |
09e18d03 | 1824 | |
b350bdf2 CY |
1825 | ** `frame-inherited-parameters' lets new frames inherit parameters from |
1826 | the selected frame. | |
09e18d03 | 1827 | |
b350bdf2 CY |
1828 | ** New keymap `input-decode-map' overrides like key-translation-map, but |
1829 | applies before function-key-map. Also it is terminal-local contrary to | |
1830 | key-translation-map. Terminal-specific key-sequences are generally added to | |
1831 | this map rather than to function-key-map now. | |
09e18d03 | 1832 | |
b350bdf2 | 1833 | ** `ignore-errors' is now a standard macro (does not require the CL package). |
09e18d03 | 1834 | |
b350bdf2 CY |
1835 | ** `interprogram-paste-function' can now return one string or a list |
1836 | of strings. In the latter case, Emacs puts the second and following | |
1837 | strings on the kill ring. | |
09e18d03 | 1838 | |
b350bdf2 CY |
1839 | ** In `condition-case', a handler can specify "let the debugger run first". |
1840 | You do this by writing `debug' in the list of conditions to be handled, | |
1841 | like this: | |
09e18d03 | 1842 | |
b350bdf2 CY |
1843 | (condition-case nil |
1844 | (foo bar) | |
1845 | ((debug error) nil)) | |
09e18d03 | 1846 | |
b350bdf2 | 1847 | ** clone-indirect-buffer now runs the clone-indirect-buffer-hook. |
09e18d03 | 1848 | |
7841339b AM |
1849 | ** `beginning-of-defun-function' now takes one argument, the count given to |
1850 | `beginning-of-defun'. (N.B. `end-of-defun-function' doesn't take any | |
1851 | arguments.) | |
09e18d03 | 1852 | |
b350bdf2 CY |
1853 | ** `file-remote-p' has new optional parameters IDENTIFICATION and CONNECTED. |
1854 | IDENTIFICATION specifies which part of the remote identifier has to be | |
1855 | returned. With CONNECTED passed non-nil, it is checked whether a | |
1856 | remote connection has been established already. | |
09e18d03 | 1857 | |
b350bdf2 CY |
1858 | ** The new macro `declare-function' suppresses compiler warnings about |
1859 | undefined functions. | |
a1562258 | 1860 | |
b350bdf2 | 1861 | ** Changes to interactive function handling |
8ba31f36 | 1862 | |
b350bdf2 CY |
1863 | *** The new interactive spec code ^ says to first call |
1864 | handle-shift-selection if shift-select-mode is non-nil, before reading | |
1865 | the command arguments. This is used for shift-selection (see above). | |
e2947429 | 1866 | |
b350bdf2 CY |
1867 | *** Built-in functions can now have an interactive specification that |
1868 | is not a prompt string. If the `intspec' parameter of a `DEFUN' | |
1869 | starts with a `(', the string is evaluated as a Lisp form. | |
e2947429 | 1870 | |
b350bdf2 CY |
1871 | *** The interactive-form of a function can be added post-facto via the |
1872 | `interactive-form' symbol property. Mostly useful to add complex | |
1873 | interactive forms to subroutines. | |
d87be1df | 1874 | |
b350bdf2 | 1875 | ** Region changes |
3ae459e5 | 1876 | |
b350bdf2 CY |
1877 | *** Commands should use `use-region-p' to test whether there is |
1878 | an active region that they should operate on. | |
3ae459e5 | 1879 | |
b350bdf2 | 1880 | *** `region-active-p' returns non-nil when Transient Mark mode is |
71b605b8 CY |
1881 | enabled and the mark is active. Most commands that act specially on |
1882 | the active region in Transient Mark mode should use `use-region-p' | |
1883 | instead of `region-active-p', because `use-region-p' obeys the new | |
1884 | user option `use-empty-active-region' (see Editing Changes, above). | |
58555d81 | 1885 | |
b350bdf2 CY |
1886 | *** If a command sets `transient-mark-mode' to (only . OLDVAL), that |
1887 | means to activate transient-mark-mode temporarily, until the next | |
1888 | unshifted point motion command or mark deactivation. Afterwards, | |
1889 | reset transient-mark-mode to the value OLDVAL. The values `only' and | |
1890 | `identity', introduced in Emacs 22, are now deprecated. | |
e5c4079c | 1891 | |
b350bdf2 | 1892 | ** Emacs session information |
13cda5f9 | 1893 | |
b350bdf2 CY |
1894 | *** The new variables `before-init-time' and `after-init-time' record the |
1895 | value of `current-time' before and after Emacs loads the init files. | |
a2bc5bdd | 1896 | |
b350bdf2 | 1897 | *** The new function `emacs-uptime' returns the uptime of an Emacs instance. |
d82c3d44 | 1898 | |
b350bdf2 CY |
1899 | *** The new function `emacs-init-time' returns the duration of the |
1900 | Emacs initialization. | |
50bfa18a | 1901 | |
b350bdf2 | 1902 | ** Changes affecting display-buffer |
16e82271 | 1903 | |
abe8f306 MR |
1904 | *** display-buffer tries to be smarter when splitting windows. |
1905 | The new option split-window-preferred-function lets you specify your own | |
1906 | function to pop up new windows. Its default value split-window-sensibly | |
1907 | can split a window either vertically or horizontally, whichever seems | |
1908 | more suitable in the current configuration. You can tune the behavior | |
1909 | of split-window-sensibly by customizing split-height-threshold and the | |
1910 | new option split-width-threshold. Both options now take the value nil | |
1911 | to inhibit splitting in one direction. Setting split-width-threshold to | |
1912 | nil inhibits horizontal splitting and gets you the behavior of Emacs 22 | |
1913 | in this respect. In any case, display-buffer may now split the largest | |
1914 | window vertically even when it is not as wide as the containing frame. | |
2d105adf | 1915 | |
f691c216 CY |
1916 | *** If pop-up-frames has the value `graphic-only', display-buffer only |
1917 | makes a separate frame on graphic displays. | |
1918 | ||
abe8f306 | 1919 | *** select-frame and set-frame-selected-window have a new optional |
ee434cb1 MR |
1920 | argument NORECORD. If non-nil, this will avoid messing with the order |
1921 | of recently selected windows and the buffer list. | |
205f3a3b | 1922 | |
781459a4 CY |
1923 | ** Window parameters can now be defined. |
1924 | These are analogous to frame parameters, but are associated with | |
1925 | individual windows. | |
16e82271 | 1926 | |
781459a4 CY |
1927 | *** The new functions window-parameters, window-parameter, and |
1928 | set-window-parameter are used to query and set window parameters. | |
1929 | ||
b350bdf2 | 1930 | ** Minibuffer and completion changes |
16e82271 | 1931 | |
b350bdf2 | 1932 | *** A list of default values can be specified for the DEFAULT argument of |
b9694062 JL |
1933 | functions `read-from-minibuffer', `read-string', `read-command', |
1934 | `read-variable', `read-buffer', `completing-read'. Elements of this list | |
1935 | are available for inserting into the minibuffer by typing `M-n'. | |
1936 | For empty input these functions return the first element of this list. | |
1937 | ||
90993beb | 1938 | *** New function `read-regexp' uses the regexp history and some useful |
4f75e082 | 1939 | regexp defaults (string at point, last Isearch/replacement regexp/string) |
90993beb JL |
1940 | via M-n when reading a regexp in the minibuffer. |
1941 | ||
b350bdf2 CY |
1942 | *** minibuffer-local-must-match-filename-map is now named |
1943 | minibuffer-local-filename-must-match-map. | |
66dc1ca2 | 1944 | |
206faa92 CY |
1945 | *** The `require-match' argument to `completing-read' accepts the new |
1946 | values `confirm-only' and `confirm-after-completion'. | |
d03b9b31 | 1947 | |
b350bdf2 | 1948 | ** Search and replacement changes |
16e82271 | 1949 | |
b350bdf2 | 1950 | *** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly. |
16e82271 | 1951 | |
b350bdf2 CY |
1952 | *** New function `match-substitute-replacement' returns the result of |
1953 | `replace-match' without actually using it in the buffer. | |
c60d543d | 1954 | |
b350bdf2 | 1955 | *** The new variable `replace-search-function' determines the function |
80120f13 EZ |
1956 | to use for searching in query-replace and replace-string. The |
1957 | function it specifies is called by `perform-replace' when its 4th | |
1958 | argument is nil. | |
3ae459e5 | 1959 | |
b350bdf2 CY |
1960 | *** The new variable `replace-re-search-function' determines the |
1961 | function to use for searching in `query-replace-regexp', | |
1962 | `replace-regexp', `query-replace-regexp-eval', and | |
80120f13 EZ |
1963 | `map-query-replace-regexp'. The function it specifies is called by |
1964 | `perform-replace' when its 4th argument is non-nil. | |
4f4a84ec | 1965 | |
4f75e082 JL |
1966 | *** New keymap `search-map' bound to `M-s' provides global bindings |
1967 | for search related commands. | |
1968 | ||
1969 | *** New keymap `multi-query-replace-map' contains additonal keys bound | |
71554a21 JL |
1970 | to `automatic-all' and `exit-current' for multi-buffer interactive replacement. |
1971 | ||
b350bdf2 CY |
1972 | *** The variable `inhibit-changing-match-data', if non-nil, prevents |
1973 | the search and match primitives from changing the match data. | |
967b2682 | 1974 | |
3c241617 CY |
1975 | *** New functions `word-search-forward-lax' and `word-search-backward-lax'. |
1976 | These are like `word-search-forward and `word-search-backward', except | |
1977 | that the end of the search string need not match a word boundary, | |
1978 | unless it ends in whitespace. | |
1979 | ||
b350bdf2 | 1980 | ** File handling changes |
8bf5c8a6 | 1981 | |
b350bdf2 CY |
1982 | *** set-file-modes is now interactive and can take the mode value in |
1983 | symbolic notation thanks to auxiliary functions. | |
16e82271 | 1984 | |
291703b5 EZ |
1985 | *** file-local-variables-alist stores an alist of file-local |
1986 | variables defined in the current buffer. | |
1987 | ||
d59f7c45 | 1988 | ** Face-remapping |
16e82271 | 1989 | |
d59f7c45 CY |
1990 | *** Each face can be remapped to a different face definition using the |
1991 | variable `face-remapping-alist'. This is an alist that maps faces to | |
1992 | replacement definitions (which can be face names, lists of face names, | |
1993 | or attribute/value plists. If this variable is buffer-local, the | |
1994 | remapping occurs only in that buffer. | |
1995 | ||
1996 | *** text-scale-mode remaps the default face to a larger or smaller | |
2e538385 | 1997 | size in the current buffer. This feature is used by the Buffer Face |
d59f7c45 CY |
1998 | menu and the new `C-x C-+', `C-x C--', and `C-x C-0' commands (see |
1999 | Editing Changes, above). | |
2000 | ||
2001 | *** New functions: | |
16e82271 | 2002 | |
d59f7c45 CY |
2003 | **** `face-remap-add-relative' adds a face remapping entry to the |
2004 | current buffer. | |
16e82271 | 2005 | |
d59f7c45 CY |
2006 | **** ``face-remap-remove-relative' removes a face remapping entry from |
2007 | the current buffer. | |
16e82271 | 2008 | |
d59f7c45 | 2009 | **** `face-remap-reset-base' restores a face to its global definition. |
16e82271 | 2010 | |
d59f7c45 CY |
2011 | **** `face-remap-set-base' sets the base remapping of a face. |
2012 | ||
85c78c0f | 2013 | ** Process changes |
16e82271 | 2014 | |
b350bdf2 CY |
2015 | *** The new function `start-file-process' is similar to `start-process', |
2016 | but obeys file handlers. The file handler is chosen based on | |
2017 | `default-directory'. The functions `start-file-process-shell-command' | |
2018 | and `process-file-shell-command' are also new; they call internally | |
2019 | `start-file-process' and `process-file', respectively. | |
2020 | ||
2021 | *** The new function `process-lines' executes an external program and | |
2022 | returns its output as a list of lines. | |
63571b5a | 2023 | |
d82c3d44 GM |
2024 | ** Character code, representation, and charset changes. |
2025 | ||
16e82271 CY |
2026 | *** In multibyte buffers and strings, characters are represented by |
2027 | UTF-8 byte sequences. The character code space is now 0x0..0x3FFFFF | |
2028 | with no gap; code points 0x0..0x10FFFF are Unicode characters of the | |
2029 | same code points, while code points 0x3FFF80..0x3FFFFF are raw 8-bit | |
2030 | bytes. | |
d82c3d44 | 2031 | |
16e82271 | 2032 | *** Generic characters no longer exist. |
d82c3d44 | 2033 | |
16e82271 CY |
2034 | *** The concept of a charset has changed. A single character may |
2035 | belong to multiple charsets (e.g. a-grave, U+00E0, belongs to charsets | |
b350bdf2 | 2036 | unicode, iso-8859-1, iso-8859-3, etc). |
d82c3d44 | 2037 | |
16e82271 CY |
2038 | **** The dimension of a charset is now 1, 2, 3, or 4, and the size of |
2039 | each dimension is no longer limited to 94 or 96. | |
2040 | ||
2041 | **** A dynamic charset priority list is used to infer the charset of | |
2042 | characters for display. | |
2043 | ||
c9a1876d EZ |
2044 | *** The functions `split-char' and `make-char' now accept up to 4 |
2045 | positional codes instead of just 2. | |
2046 | ||
d82c3d44 GM |
2047 | *** The functions `encode-char' and `decode-char' now accept any character sets. |
2048 | ||
2049 | *** The function `define-charset' now accepts a completely different | |
2050 | form of arguments (old-style arguments still work). | |
2051 | ||
d82c3d44 GM |
2052 | *** The value of the function `char-charset' depends on the current |
2053 | priorities of charsets. | |
2054 | ||
d82c3d44 GM |
2055 | *** The function get-char-code-property now accepts many Unicode base |
2056 | character properties. They are `name', `general-category', | |
2057 | `canonical-combining-class', `bidi-class', `decomposition', | |
2058 | `decimal-digit-value', `digit-value', `numeric-value', `mirrored', | |
2059 | `old-name', `iso-10646-comment', `uppercase', `lowercase', and | |
2060 | `titlecase'. | |
2061 | ||
b350bdf2 CY |
2062 | *** The functions `modify-syntax-entry' and `modify-category-entry' now |
2063 | accept a cons of characters as the first argument, and modify all | |
2064 | entries in that range of characters. | |
d82c3d44 | 2065 | |
8434d0b8 EZ |
2066 | *** Use of `translation-table-for-input' for character code unification |
2067 | is now obsolete, since Emacs 23.1 and later uses Unicode as basis for | |
2068 | internal representation of characters. | |
d82c3d44 | 2069 | |
b350bdf2 | 2070 | *** New functions: |
d82c3d44 | 2071 | |
b350bdf2 CY |
2072 | **** `characterp' returns t if and only if the argument is a character. |
2073 | This replaces `char-valid-p', which is now obsolete. | |
d82c3d44 | 2074 | |
b350bdf2 | 2075 | **** `max-char' returns the maximum character code (currently #x3FFFFF). |
d82c3d44 | 2076 | |
b350bdf2 CY |
2077 | **** `define-charset-alias' defines an alias of a charset. |
2078 | ||
2079 | **** `set-charset-priority' sets priorities of charsets. | |
2080 | ||
2081 | **** `charset-priority-list' returns a prioritized list of charsets. | |
2082 | ||
2083 | **** `unibyte-string' makes a unibyte string from bytes. | |
2084 | ||
2085 | **** `define-char-code-property' defines a character code property. | |
2086 | ||
2087 | **** `char-code-property-description' returns the description string of | |
2088 | a character code property. | |
2089 | ||
2090 | *** New variables: | |
2091 | ||
2092 | **** `find-word-boundary-function-table' is a char-table of functions to | |
2093 | search for a word boundary. | |
2094 | ||
2095 | **** `char-script-table' is a char-table of script names. | |
2096 | ||
2097 | **** `char-width-table' is a char-table of character widths. | |
2098 | ||
2099 | **** `print-charset-text-property' controls how to handle `charset' text | |
2100 | property on printing a string. | |
2101 | ||
2102 | **** `printable-chars' is a char-table of printable characters. | |
d82c3d44 | 2103 | |
505d8756 | 2104 | ** Code conversion changes |
d82c3d44 GM |
2105 | |
2106 | *** The new function `define-coding-system' should be used to define a | |
2107 | coding system instead of `make-coding-system' (which is now obsolete). | |
2108 | ||
2109 | *** The functions `encode-coding-region' and `decode-coding-region' | |
2110 | have an optional 4th argument to specify where the result of | |
2111 | conversion should go. | |
2112 | ||
2113 | *** The functions `encode-coding-string' and `decode-coding-string' | |
2114 | have an optional 4th argument specifying a buffer to store the result | |
2115 | of conversion. | |
2116 | ||
b0caa7fb EZ |
2117 | *** The new variable `inhibit-null-byte-detection' controls whether to |
2118 | consider text with null bytes as binary data. By default, it is | |
2119 | `nil', and Emacs uses `no-conversion' for any text containing null | |
2120 | bytes. | |
2121 | ||
b350bdf2 | 2122 | *** The functions `set-coding-priority' and `make-coding-system' are obsolete. |
d82c3d44 | 2123 | |
b350bdf2 | 2124 | *** New functions: |
d82c3d44 | 2125 | |
b350bdf2 CY |
2126 | **** `with-coding-priority' executes Lisp code using the specified |
2127 | coding system priority order. | |
d82c3d44 | 2128 | |
b350bdf2 CY |
2129 | **** `check-coding-systems-region' checks if the text in the region is |
2130 | encodable by the specified coding systems. | |
d82c3d44 | 2131 | |
b350bdf2 | 2132 | **** `coding-system-aliases' returns a list of aliases of a coding system. |
d82c3d44 | 2133 | |
b350bdf2 CY |
2134 | **** `coding-system-charset-list' returns a list of charsets supported |
2135 | by a coding system. | |
d82c3d44 | 2136 | |
b350bdf2 CY |
2137 | **** `coding-system-priority-list' returns a list of coding systems |
2138 | ordered by their priorities. | |
2139 | ||
2140 | **** `set-coding-system-priority' sets priorities of coding systems. | |
d82c3d44 | 2141 | |
f4017dc5 KH |
2142 | **** `coding-system-from-name' returns a coding system matching with |
2143 | the argument name. | |
2144 | ||
d82c3d44 | 2145 | ** There is a new input method, Robin, different from Quail. |
0caa490b | 2146 | It has three functionalities: |
d82c3d44 GM |
2147 | i) a simple input method (converts an ASCII sequence into a string). |
2148 | ii) converts an existing buffer substring into another string | |
2149 | iii) reverse conversion (each character produced by a | |
2150 | robin rule can hold the original ASCII sequence as a char-code-property) | |
2151 | ||
2152 | *** The new function `robin-define-package' defines a Robin package. | |
2153 | ||
2154 | *** The new function `robin-modify-package' modifies an existing Robin package. | |
2155 | ||
2156 | *** The new function `robin-use-package' starts using a Robin package | |
2157 | as an input method. | |
2158 | ||
888d7d86 KH |
2159 | *** The new function `string-to-unibyte' is like `string-as-unibyte' |
2160 | but signals an error if STRING contains a non-ASCII, non-eight-bit | |
2161 | character. | |
2162 | ||
505d8756 | 2163 | ** Changes related to the new font backend |
16e82271 | 2164 | |
0c1e3f0d CY |
2165 | *** Which font backends to use can be specified by the X resource |
2166 | "FontBackend". For instance, to use both X core fonts and Xft fonts: | |
2b7a2553 | 2167 | |
b19aa6dd | 2168 | Emacs.FontBackend: x,xft |
2b7a2553 | 2169 | |
b19aa6dd GM |
2170 | If this resource is not set, Emacs tries to use all font backends |
2171 | available on your graphic device. | |
16e82271 | 2172 | |
d82c3d44 GM |
2173 | *** New frame parameter `font-backend' specifies a list of |
2174 | font-backends supported by the frame's graphic device. On X, they are | |
2175 | currently `x' and `xft'. | |
2176 | ||
b350bdf2 CY |
2177 | *** The function `set-fontset-font' now accepts a script name as the |
2178 | second argument, and has an optional 5th argument to control how to | |
2179 | set the font. | |
bd9d28f7 | 2180 | |
b350bdf2 | 2181 | *** New functions: |
16e82271 | 2182 | |
b350bdf2 | 2183 | **** `fontp' checks if the argument is a font-spec or font-entity. |
16e82271 | 2184 | |
b350bdf2 | 2185 | **** `font-spec' creates a new font-spec object. |
16e82271 | 2186 | |
b350bdf2 | 2187 | **** `font-get' returns a font property value. |
16e82271 | 2188 | |
b350bdf2 | 2189 | **** `font-put' sets a font property value. |
16e82271 | 2190 | |
b350bdf2 | 2191 | **** `font-face-attributes' returns a plist of face attributes set by a font. |
16e82271 | 2192 | |
b350bdf2 | 2193 | **** `list-fonts' returns a list of font-entities matching a font spec. |
16e82271 | 2194 | |
543e6d09 | 2195 | **** `find-font' returns the font-entity best matching the given font spec. |
16e82271 | 2196 | |
ae525471 | 2197 | **** `font-family-list' returns a list of family names of available fonts. |
16e82271 | 2198 | |
b350bdf2 CY |
2199 | **** `font-xlfd-name' returns an XLFD name of a given font spec, font |
2200 | entity, or font object. | |
16e82271 | 2201 | |
b350bdf2 | 2202 | **** `clear-font-cache' clears all font caches. |
d82c3d44 | 2203 | |
b350bdf2 | 2204 | ** Changes related to multiple-terminal (multi-tty) support |
24cdde13 | 2205 | |
b12f6e85 SM |
2206 | *** $TERM is now set to `dumb' for subprocesses. If you want to know the |
2207 | $TERM inherited by Emacs you will have to look inside initial-environment. | |
2208 | ||
6168122d SM |
2209 | *** $DISPLAY is now dynamically inherited from the frame's `display'. |
2210 | ||
b350bdf2 | 2211 | *** The `window-system' variable is now frame-local. The new |
24cdde13 | 2212 | `initial-window-system' variable contains the `window-system' value |
bbe3eb99 GM |
2213 | for the first frame. `window-system' is also now a function that |
2214 | takes a frame argument. | |
24cdde13 | 2215 | |
b350bdf2 CY |
2216 | *** The `keyboard-translate-table' variable and the terminal and |
2217 | keyboard coding systems are now terminal-local. | |
2218 | ||
24cdde13 GM |
2219 | *** You can specify a terminal device (`tty' parameter) and a terminal |
2220 | type (`tty-type' parameter) to `make-terminal-frame'. | |
2221 | ||
24cdde13 | 2222 | *** The function `make-frame-on-display' now works during a tty |
4e598d29 | 2223 | session. |
24cdde13 | 2224 | |
1e637a9f EZ |
2225 | *** A new `terminal' data type. |
2226 | The functions `get-device-terminal', `terminal-parameters', | |
765980a4 | 2227 | `terminal-parameter', `set-terminal-parameter' use this data type. |
24cdde13 | 2228 | |
b350bdf2 CY |
2229 | *** Function key sequences are now mapped using `local-function-key-map', |
2230 | a new variable. This inherits from the global variable function-key-map, | |
2231 | which is not used directly any more. | |
92cd6a7c | 2232 | |
b350bdf2 | 2233 | *** New hooks: |
da406961 | 2234 | |
7082ceb2 CY |
2235 | **** before-hack-local-variables-hook is called after setting new |
2236 | variable file-local-variables-alist, and before actually applying the | |
2237 | file-local variables. | |
2238 | ||
b350bdf2 CY |
2239 | **** `suspend-tty-functions' and `resume-tty-functions' are called |
2240 | after a tty frame has been suspended or resumed, respectively. The | |
2241 | functions are called with the terminal id of the frame being | |
2242 | suspended/resumed as a parameter. | |
da406961 | 2243 | |
b350bdf2 CY |
2244 | **** The special hook `delete-terminal-functions' is called before |
2245 | deleting a terminal. | |
82866ad5 | 2246 | |
b350bdf2 | 2247 | *** New functions: |
24cdde13 | 2248 | |
490f1197 | 2249 | **** `delete-terminal' |
9f44d41a | 2250 | |
b350bdf2 | 2251 | **** `suspend-tty' |
ea2e3ef4 | 2252 | |
b350bdf2 | 2253 | **** `resume-tty'. |
8d371994 | 2254 | |
b350bdf2 | 2255 | *** `initial-environment' holds the environment inherited from Emacs's parent. |
8d371994 | 2256 | |
b350bdf2 | 2257 | ** Redisplay changes |
16e82271 | 2258 | |
b350bdf2 CY |
2259 | *** For underlined characters, the distance between the underline and |
2260 | the baseline is controlled by a new variable, `underline-minimum-offset'. | |
16e82271 | 2261 | |
b350bdf2 CY |
2262 | *** You can now pass the value of the `invisible' property to |
2263 | invisible-p to check whether it would cause the text to be invisible. | |
540f3092 GM |
2264 | This is convenient when checking invisibility of text with no buffer |
2265 | position (e.g. in before/after-strings). | |
16e82271 | 2266 | |
b350bdf2 | 2267 | *** `clear-image-cache' can be told to flush only images of a specific file. |
16e82271 | 2268 | |
0c8b58e9 CY |
2269 | *** `vertical-motion' can now be given a goal column. |
2270 | It now accepts a cons cell (COLS . LINES) in its first argument, which | |
2271 | says to stop, where possible, at a pixel x-position equal to COLS | |
2272 | times the default column width. | |
16e82271 | 2273 | |
e589455f MR |
2274 | *** redisplay-end-trigger-functions, set-window-redisplay-end-trigger, |
2275 | and window-redisplay-end-trigger are obsolete. Use `jit-lock-register' | |
2276 | instead. | |
16e82271 | 2277 | |
605bfcb3 CY |
2278 | *** The new variables `wrap-prefix' and `line-prefix' specify display |
2279 | specs which are appended at display-time to every continuation line | |
2280 | and non-continuation line, respectively. In addition, Emacs | |
2281 | recognizes the `wrap-prefix' and `line-prefix' text or overlay | |
2282 | properties; these have the same effects as the variables of the same | |
2283 | name, but take precedence. | |
e589455f | 2284 | |
9ac64acd CY |
2285 | ** The Lisp interpreter now treats non-breaking space as whitespace. |
2286 | ||
b350bdf2 | 2287 | ** Miscellaneous new functions |
9f44d41a | 2288 | |
b350bdf2 | 2289 | *** `apply-partially' performs a "curried" application of a function. |
abf13a8b | 2290 | |
b350bdf2 CY |
2291 | *** `buffer-swap-text' swaps text between two buffers. This can be |
2292 | useful for modes such as tar-mode, archive-mode, RMAIL. | |
967b2682 | 2293 | |
6880f6db CY |
2294 | *** `combine-and-quote-strings' produces a single string from a list of strings |
2295 | sticking a separator string in between each pair, and quoting those | |
2296 | strings that include the separator as their substring. Useful for | |
2297 | consing shell command lines from the individual arguments. | |
2298 | ||
2299 | *** `custom-note-var-changed' tells Custom to treat the change in a | |
2300 | certain variable as having been made within Custom. | |
b350bdf2 CY |
2301 | |
2302 | *** `face-all-attributes' returns an alist describing all the basic | |
2303 | attributes of a given face. | |
2304 | ||
6880f6db CY |
2305 | *** `format-seconds' converts a number of seconds into a readable |
2306 | string of days, hours, etc. | |
b350bdf2 CY |
2307 | |
2308 | *** `image-refresh' refreshes all images associated with a given image | |
2309 | specification. | |
64639e26 | 2310 | |
6880f6db CY |
2311 | *** `locate-user-emacs-file' helps packages to select the appropriate |
2312 | place to save user-specific files. It defaults to `user-emacs-directory' | |
2313 | unless the file already exists at $HOME. | |
2314 | ||
6880f6db CY |
2315 | *** `read-color' reads a color name using the minibuffer. |
2316 | ||
6880f6db CY |
2317 | *** `read-shell-command' does what its name says, with completion. It |
2318 | uses the minibuffer-local-shell-command-map for that. | |
2319 | ||
6880f6db CY |
2320 | *** `split-string-and-unquote' splits a string into a list of substrings |
2321 | on the boundaries of a given delimiter, and unquotes the substrings that | |
2322 | are quoted. Useful for taking apart shell commands. | |
2323 | ||
b350bdf2 | 2324 | *** The two new functions `looking-at-p' and `string-match-p' can do |
45595a4f RS |
2325 | the same matching as `looking-at' and `string-match' without changing |
2326 | the match data. | |
89835619 | 2327 | |
81efacf9 CY |
2328 | *** The two new functions `make-serial-process' and |
2329 | `serial-process-configure' provide a Lisp interface to the new serial | |
2330 | port support (see Emacs changes, above). | |
2331 | ||
b350bdf2 CY |
2332 | ** Miscellaneous new variables |
2333 | ||
28aaa255 CY |
2334 | *** `auto-save-include-big-deletions', if non-nil, means auto-save is |
2335 | not turned off automatically after a big deletion. | |
2336 | ||
91f68422 CY |
2337 | *** `read-circle', if nil, disables the reading of recursive Lisp |
2338 | structures using the #N= and #N# syntax. | |
2339 | ||
b350bdf2 CY |
2340 | *** `this-command-keys-shift-translated' is non-nil if the key |
2341 | sequence invoking the current command was found by shift-translation. | |
2342 | ||
2343 | *** `window-point-insertion-type' determines the insertion-type of the | |
2344 | marker used for window-point. | |
2345 | ||
2346 | *** bookmark provides `bookmark-make-record-function' so special major | |
2347 | modes like Info can teach bookmark.el how to save and restore the | |
2348 | relevant data. | |
2349 | ||
b350bdf2 CY |
2350 | *** `fill-forward-paragraph-function' specifies which function the |
2351 | filling code should use to find paragraph boundaries. | |
2352 | ||
9bae34bf | 2353 | \f |
0bfd685e | 2354 | * New Packages for Lisp Programming in Emacs 23.1 |
efeb796b | 2355 | |
b350bdf2 CY |
2356 | ** The new package avl-tree.el deals with the AVL tree data structure. |
2357 | ||
2358 | ** The new package check-declare.el verifies the accuracy of | |
2359 | declare-function macros (see Lisp Changes, above). | |
d445b3f8 | 2360 | |
20202f5e | 2361 | ** find-cmd.el can build `find' commands using lisp syntax. |
6dfcbe31 | 2362 | |
babc4609 JL |
2363 | ** The package misearch.el has been added. It allows Isearch to search |
2364 | through multiple buffers. A variable `multi-isearch-next-buffer-function' | |
2365 | defines the function to call to get the next buffer to search in the series | |
b0d6136e | 2366 | of multiple buffers. Top-level functions `multi-isearch-buffers', |
babc4609 JL |
2367 | `multi-isearch-buffers-regexp', `multi-isearch-files' and |
2368 | `multi-isearch-files-regexp' accept a single argument that specifies | |
2369 | a list of buffers/files to search for a string/regexp. | |
9097e8af | 2370 | |
b350bdf2 CY |
2371 | ** The new major mode `special-mode' is intended as a parent for |
2372 | major modes such as those that set the "'mode-class 'special" property. | |
d53a60a6 | 2373 | |
05197f40 | 2374 | \f |
a933dad1 | 2375 | ---------------------------------------------------------------------- |
5b87ad55 | 2376 | This file is part of GNU Emacs. |
a933dad1 | 2377 | |
ab73e885 | 2378 | GNU Emacs is free software: you can redistribute it and/or modify |
5b87ad55 | 2379 | it under the terms of the GNU General Public License as published by |
ab73e885 GM |
2380 | the Free Software Foundation, either version 3 of the License, or |
2381 | (at your option) any later version. | |
5b87ad55 GM |
2382 | |
2383 | GNU Emacs is distributed in the hope that it will be useful, | |
2384 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
2385 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
2386 | GNU General Public License for more details. | |
a933dad1 | 2387 | |
5b87ad55 | 2388 | You should have received a copy of the GNU General Public License |
ab73e885 | 2389 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
a933dad1 | 2390 | |
05197f40 | 2391 | \f |
a933dad1 DL |
2392 | Local variables: |
2393 | mode: outline | |
2394 | paragraph-separate: "[ \f]*$" | |
2395 | end: | |
ab5796a9 | 2396 | |
a533413c | 2397 | arch-tag: e759449d-88b3-4de4-9900-3a6c3dfa23e2 |