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29b7722a | 1 | GNU Emacs NEWS -- history of user-visible changes. |
5b87ad55 | 2 | |
dcb8ac09 | 3 | Copyright (C) 2007, 2008 Free Software Foundation, Inc. |
5b87ad55 | 4 | See the end of the file for license conditions. |
a933dad1 | 5 | |
3f7194ed | 6 | Please send Emacs bug reports to emacs-pretest-bug@gnu.org. |
9a21d88b KS |
7 | If possible, use M-x report-emacs-bug. |
8 | ||
0bfd685e | 9 | This file is about changes in Emacs version 23. |
9a21d88b | 10 | |
0bfd685e GM |
11 | See files NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17 |
12 | for changes in older Emacs versions. | |
9a21d88b KS |
13 | |
14 | You can narrow news to a specific version by calling `view-emacs-news' | |
15 | with a prefix argument or by typing C-u C-h C-n. | |
3f7194ed GM |
16 | |
17 | Temporary note: | |
18 | +++ indicates that the appropriate manual has already been updated. | |
19 | --- means no change in the manuals is called for. | |
20 | When you add a new item, please add it without either +++ or --- | |
21 | so we will look at it and add it to the manual. | |
22 | ||
05197f40 | 23 | \f |
9c576ea0 KS |
24 | * About external Lisp packages |
25 | ||
9c576ea0 | 26 | \f |
0bfd685e | 27 | * Installation Changes in Emacs 23.1 |
c58dccad | 28 | |
3f7194ed GM |
29 | ** The default X toolkit is now Gtk+, rather than Lucid. |
30 | ||
2b7a2553 GM |
31 | ** The new configuration option "--enable-font-backend" enables new code |
32 | for handling fonts by multiple backends (the old font handling codes | |
33 | still exist). This requires the freetype and fontconfig libraries, and | |
34 | supports local fonts (fonts installed on the machine where Emacs is running). | |
35 | Additionally, the Xft library can be used for antialiasing support. | |
36 | Fontconfig-like font names (e.g. monospace-12) are also accepted. | |
37 | ||
1abe3a1e DN |
38 | ** The new configuration option "--with-dbus" enables D-Bus language |
39 | bindings for Emacs. | |
40 | ||
15f02f65 GM |
41 | ** The Mac Carbon port is no longer supported. |
42 | Instead, use... [what?] | |
43 | ||
9d3cc9b2 GM |
44 | ** configure now checks for libgif before libungif when searching for |
45 | a GIF library. | |
b5ac89f8 | 46 | |
36e625ec GM |
47 | ** Support for systems without alloca has been removed. |
48 | ||
07e5c0b0 DN |
49 | ** Support for Sun windows has been removed. |
50 | ||
bb9f7948 EZ |
51 | ** Support for many obsolete platforms has been removed. |
52 | See the list at the end of etc/MACHINES for details. | |
53 | ||
48a8be40 GM |
54 | ** The `emacstool' utility has been removed. |
55 | ||
a46ee55c GM |
56 | ** The configure options `--with-gcc', `--without-gcc' have been removed. |
57 | Configure will use gcc by default. Set the CC environment variable if | |
58 | you need control over which C compiler is used. | |
59 | ||
60 | ** The configure option `--with-gtk' has been removed. Gtk is now the | |
61 | default toolkit, but you can use --with-x-toolkit=gtk if necessary. | |
4e5cdb4f | 62 | \f |
6dadd99f NR |
63 | * Changes in Emacs 23.1 |
64 | ||
780d7bb9 | 65 | ** Emacs now supports using both X displays and ttys in one session. |
1abe3a1e DN |
66 | Start the server (M-x server-start). Then `emacsclient -t' creates a |
67 | tty frame connected to the running emacs server. You can also use any | |
68 | number of different ttys. `emacsclient -c' creates a new X11 frame on | |
69 | the current $DISPLAY or a tty frame if $DISPLAY is not set. | |
780d7bb9 RS |
70 | |
71 | You can test for the presence of this feature in your Lisp code by | |
72 | testing for the `multi-tty' feature. | |
73 | ||
d82c3d44 GM |
74 | ** The Emacs character set is now a superset of Unicode. |
75 | (It has about four times the code space, which should be plenty). | |
76 | ||
77 | The internal encoding used for buffers and strings is now | |
78 | Unicode-based and called `utf-8-emacs'. utf-8-emacs is backwards | |
79 | compatible with the UTF-8 encoding of Unicode. The `emacs-mule' | |
80 | coding system can still read and write data in the old internal encoding. | |
81 | ||
82 | Since the internal encoding is also used by default for byte-compiled | |
83 | files -- i.e. the normal coding system for byte-compiled Lisp files is | |
84 | now utf-8-Emacs -- Lisp containing non-ASCII characters which is | |
85 | compiled by Emacs 23 can't be read by earlier versions of Emacs. Files | |
86 | compiled by Emacs 20, 21, or 22 are loaded correctly as emacs-mule | |
87 | (whether or not they contain multibyte characters), which makes loading | |
88 | them somewhat slower than Emacs 23-compiled files. Thus it may be worth | |
89 | recompiling existing .elc files which don't need to be shared with older | |
90 | Emacsen. | |
91 | ||
d82c3d44 GM |
92 | ** There are assorted new coding systems/aliases -- see M-x list-coding-systems. |
93 | ||
94 | ** There is a new charset implementation with many new charsets. | |
95 | See M-x list-character-sets. New charsets can be defined conveniently | |
96 | as tables of unicodes. | |
97 | ||
98 | The dimension of a charset is now 1, 2, 3, or 4, and the size of each | |
99 | dimension is no longer limited to 94 or 96. | |
100 | ||
101 | A dynamic charset priority list is used to infer the charset of | |
102 | characters for display. | |
103 | ||
104 | ** There are new Chinese-GBK, Chinese-GB18030, Khmer, and TaiViet language | |
105 | environments. | |
106 | ||
7b476dbe JD |
107 | ** Emacs now supports the XEmbed specification. |
108 | You can embed Emacs in another application on X11. The new command line option | |
109 | --parent-id is used to pass the parent window id to Emacs. See | |
110 | http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html | |
111 | for details about XEmbed. | |
112 | ||
251ad2de TTN |
113 | ** Emacs comes with a new set of icons for Mac OS X. |
114 | OS-X-style icons (an application icon and a relevant document icon) | |
115 | were contributed by Kentaro Ohkouchi. | |
116 | Source files for these icons can be found in Emacs.app/Contents/Resources. | |
1518e9a1 | 117 | PNG versions are available as etc/images/icons/emacs*_mac.png. |
251ad2de | 118 | |
f664fee9 MC |
119 | ** Built-in functions (subr) can now have an interactive specification |
120 | that is not a prompt string. If the `intspec' parameter of a `DEFUN' | |
121 | starts with a `(', the string is evaluated as a Lisp form. | |
122 | ||
123 | ** set-file-modes is now interactive and can take the mode value in | |
124 | symbolic notation thanks to auxiliary functions. | |
125 | ||
90ab5c62 SM |
126 | ** split-window-preferred-function specifies whether display-buffer should |
127 | split windows vertically or horizontally. | |
128 | ||
24cdde13 GM |
129 | ** Emacsclient has been extended to support opening a new terminal |
130 | frame. Its behavior has been changed to open a new Emacs frame by | |
131 | default. Use the -c option to get the old behavior of opening files in | |
132 | the currently selected Emacs frame. | |
133 | ||
c0dadae9 MC |
134 | ** The refcards are now shipped as PDF files. |
135 | ||
795a2a94 GM |
136 | ** Emacs now supports the SVG image format through librsvg2. |
137 | ||
a2b84f35 DN |
138 | ** transient-mark-mode is now enabled by default. |
139 | ||
75f6af19 | 140 | ** If you set find-file-confirm-nonexistent-file to t, then C-x C-f |
0a963185 SM |
141 | requires confirmation before opening a non-existent file. |
142 | ||
6dadd99f NR |
143 | ** If the gpm mouse server is running and t-mouse-mode enabled, Emacs uses a |
144 | Unix socket in a GNU/Linux console to talk to server, rather than faking events | |
145 | using the client program mev. This C level approach provides mouse | |
146 | highlighting, and help echoing in the minibuffer. | |
147 | ||
c2e8590b TTN |
148 | ** The new variable next-error-recenter specifies how next-error should |
149 | recenter the visited source file. Its value can be a number (for example, | |
150 | 0 for top line, -1 for bottom line), or nil for no recentering. | |
151 | ||
1abe3a1e DN |
152 | ** New command recenter-top-bottom moves the current line to window |
153 | center, top and bottom on successive invokations. | |
154 | ||
eb28688c GM |
155 | ** C-l is bound to the new command recenter-top-bottom, rather than recenter. |
156 | ||
d87b5ced | 157 | ** The mode-line displays a `@' if the default-directory for the current buffer |
1f2e1c75 | 158 | is on a remote machine, or a hyphen otherwise. |
6c5d503f | 159 | |
c9447ae1 GM |
160 | ** The mode-line displays a mode menu when mouse-1 is clicked on a minor mode, |
161 | in the same way as it already did for major modes. | |
162 | ||
de3054d5 | 163 | ** The new command balance-windows-area balances windows both vertically |
62e3c31f | 164 | and horizontally. |
d466e9fc SM |
165 | |
166 | ** The new command close-display-connection can be used to close a connection | |
167 | to a remote display, e.g. because the display is about to become unreachable. | |
6c5d503f MA |
168 | |
169 | ** The command shell prompts for the default directory, when it is | |
170 | called with a prefix, and the default directory is a remote file name. | |
de3054d5 | 171 | This is because some file name handlers (like ange-ftp) are not able to |
6c5d503f | 172 | run processes remotely. |
aff2ba04 RS |
173 | |
174 | ** The new command `display-time-world' starts an updating time display | |
175 | using several time zones, in a buffer. | |
c4c9b6f9 | 176 | |
5c4a15b3 GM |
177 | ** The new function `format-seconds' converts a number of seconds into a |
178 | readable string of days, hours, etc. | |
179 | ||
9f871ce2 GM |
180 | ** The new variables `before-init-time' and `after-init-time' record the |
181 | value of `current-time' before and after Emacs loads the init files. | |
c4c9b6f9 GM |
182 | |
183 | ** The new function `emacs-uptime' returns the uptime of an Emacs instance. | |
184 | ||
b3cf10d7 JL |
185 | ** The new function `emacs-init-time' returns the duration of the |
186 | Emacs initialization. | |
187 | ||
d82c3d44 GM |
188 | ** The minor modes unify-8859-on-encoding-mode, unify-8859-on-decoding-mode |
189 | are obsolete. | |
190 | ||
6dadd99f | 191 | \f |
0bfd685e | 192 | * Startup Changes in Emacs 23.1 |
21f7b9d8 | 193 | |
56e1896b JL |
194 | ** New user option `initial-buffer-choice' specifies what to display |
195 | after starting Emacs: startup screen, *scratch* buffer, visiting a | |
196 | file or directory. | |
197 | ||
aa5310e4 DK |
198 | ** New alias `argv' for `command-line-args-left' |
199 | This is a convenience alias, so that one can write `(pop argv)' | |
200 | inside of --eval command line arguments in order to access | |
201 | following arguments. | |
f8fd7ed3 GM |
202 | |
203 | ** The abbrev file is no longer read at startup in batch mode. | |
c44da964 | 204 | \f |
0bfd685e | 205 | * Incompatible Editing Changes in Emacs 23.1 |
b58cb59f | 206 | |
117907d4 JL |
207 | +++ |
208 | ** In Dired-x, all command guesses for ! are now added to the default | |
209 | list accessible by M-n instead of pushing all guesses temporarily into | |
210 | the history list. | |
211 | ||
406c0f12 | 212 | \f |
0bfd685e | 213 | * Editing Changes in Emacs 23.1 |
406c0f12 | 214 | |
59b5d020 JL |
215 | +++ |
216 | ** C-M-% now shows replacement as it would look in the buffer, with | |
217 | `\N' and `\&' substituted according to the match. Old behavior can be | |
218 | restored by customizing `query-replace-show-replacement'. | |
219 | ||
1ac03a31 JL |
220 | +++ |
221 | ** M-q now fills the region if the region is active and | |
222 | `transient-mark-mode' is turned on. Otherwise, it fills the current | |
ecde850a | 223 | paragraph. |
1ac03a31 | 224 | |
ecde850a | 225 | +++ |
dc868f13 JL |
226 | ** M-$ now checks spelling of the region if the region is active and |
227 | `transient-mark-mode' is turned on. Otherwise, it checks spelling of the | |
228 | word at point. | |
229 | ||
6dd697d9 DN |
230 | ** TAB now indents the region if the region is active and |
231 | `transient-mark-mode' is turned on. | |
232 | ||
d03b9b31 RS |
233 | ** `use-empty-active-region' controls whether an empty active region |
234 | in Transient Mark mode should make commands operate on that empty region. | |
235 | ||
24cdde13 GM |
236 | ** C-z now invokes `suspend-frame', C-x C-c now invokes |
237 | `save-buffers-kill-terminal'. | |
238 | ||
a151f82c SS |
239 | ** New command kill-matching-buffers kills buffers whose name matches a regexp. |
240 | ||
63571b5a RS |
241 | ** You can disable kill ring commands from accessing the primary selection |
242 | by setting `x-select-enable-primary' to nil. | |
243 | ||
244 | ** If `select-active-regions' is t, setting the mark automatically | |
245 | makes the new region into the primary selection (for interaction with | |
246 | other window applications). If you enable this, you might want to bind | |
247 | `mouse-yank-primary' to Mouse-2. | |
539f5bda | 248 | |
4496b02b RS |
249 | ** If `yank-pop-change-selection' is t, rotating the kill ring |
250 | also updates the selection or clipboard to the current yank, | |
251 | just as M-w would do so with the text it copies to the kill ring. | |
252 | ||
297b8ccd JL |
253 | ** Minibuffer changes: |
254 | ||
dc2f6c05 JL |
255 | *** In C-x d, if you type M-n you get the visited file name of the |
256 | current buffer. | |
257 | ||
117907d4 JL |
258 | *** In Dired, a list of commands for ! extracted from mailcap according to |
259 | file extensions are added to the default list accessible by M-n. | |
260 | ||
261 | *** A list of regexp default values is available via M-n for `occur', | |
262 | `keep-lines', `flush-lines' and `how-many'. This list includes the active | |
263 | region in transient-mark-mode, the word under the cursor, the last isearch | |
264 | regexp, the last isearch string and the last replacement regexp. | |
265 | ||
297b8ccd JL |
266 | *** isearch started in the minibuffer searches in the minibuffer history. |
267 | Reverse isearch commands (C-r, C-M-r) search in previous minibuffer | |
268 | history elements, and forward isearch commands (C-s, C-M-s) search in | |
269 | next history elements. When the reverse search reaches the first history | |
270 | element, it wraps to the last history element, and the forward search | |
271 | wraps to the first history element. When the search is terminated, the | |
272 | history element containing the search string becomes the current. | |
273 | ||
0bfd685e GM |
274 | \f |
275 | * New Modes and Packages in Emacs 23.1 | |
0091c67e | 276 | |
2e282009 GM |
277 | ** FIXME add details of new packages imported from lisp/gnus. |
278 | ||
1816bda7 MC |
279 | ** The package doc-view.el has been added. It supports viewing of PDF, |
280 | PostScript and DVI documents inside an Emacs buffer by converting the | |
281 | document to a set of PNG images first. One can also search for a | |
282 | regular expression in the document. The commentary of the file explains | |
283 | its usage. | |
284 | ||
a2e0b5dd GM |
285 | ** The nXML package has been added. |
286 | [FIXME someone who uses this, please write a brief description.] | |
287 | ||
ddc961c5 | 288 | ** A new game called `bubbles' has been added. |
a0818148 | 289 | |
dcd6e8d7 | 290 | ** minibuffer-indicate-depth-mode shows the minibuffer depth in the prompt. |
3f7194ed | 291 | |
15f3eb73 MO |
292 | ** Remember Mode (remember.el) is now included with Emacs. It is a |
293 | mode for quickly jotting down things to remember. Included with | |
294 | remember.el is a backend that can save notes to a Diary file. Please | |
295 | consult the Remember Manual for usage details. | |
296 | ||
9264ee6a MA |
297 | ** D-Bus language bindings for Elisp are provided by the package |
298 | dbus.el and by extensions to the C modules of Emacs. D-Bus is an | |
299 | inter-process communication mechanism for applications residing on the | |
300 | same host, based on messages. See the manual for further details. | |
c154c0be | 301 | |
c6588a85 MO |
302 | ** EasyPG is now part of the Emacs distribution. It is an all-in-one |
303 | GnuPG interface which includes GnuPG keyring browser, cryptographic | |
304 | operations on regions and files, and automatic encryption of *.gpg | |
305 | files. See the EasyPG Assistant User's Manual for further details. | |
0bfd685e GM |
306 | \f |
307 | * Changes in Specialized Modes and Packages in Emacs 23.1 | |
61d244ca | 308 | |
d82c3d44 GM |
309 | ** New minor mode Auto Composition Mode composes characters automatically |
310 | when they are displayed. This mode is globally on by default. | |
311 | ||
e8cbfb8d DN |
312 | ** ChangeLog now has function bound to C-c C-f that finds the file in |
313 | the current log entry. | |
314 | ||
e047f448 SM |
315 | ** abbrev was rewritten in Elisp and extended with more flexibility. |
316 | *** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put, | |
317 | abbrev-table-p. | |
318 | *** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'. | |
319 | *** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take | |
320 | extra arguments for arbitrary properties. | |
321 | *** New variable `abbrev-minor-mode-table-alist'. | |
322 | *** `local-abbrev-table' can hold a list of abbrev-tables. | |
323 | *** Abbrevs have now the following special properties: | |
79415279 | 324 | `:count', `:system', `:enable-function', `:case-fixed'. |
e047f448 SM |
325 | *** Abbrev-tables have now the following special properties: |
326 | `:parents', `:case-fixed', `:enable-function', `:regexp', | |
327 | `abbrev-table-modiff'. | |
328 | ||
0253fffa MR |
329 | ** Help mode. |
330 | *** New macro `with-help-window' should set up help windows better | |
331 | than `with-output-to-temp-buffer' with `print-help-return-message'. | |
332 | *** New option `help-window-select' permits to customize whether help | |
333 | window shall be automatically selected when invoking help. | |
334 | *** New variable `help-window-point-marker' permits to specify new | |
b0d2d4e8 | 335 | position of point in help window (for example in `view-lossage'). |
0253fffa MR |
336 | |
337 | ** view-remove-frame-by-deleting is now by default t | |
b0d2d4e8 | 338 | since users found iconification of view-mode frames distracting. |
0253fffa | 339 | |
bafbec39 JL |
340 | ** Isearch mode |
341 | ||
342 | *** New command `isearch-occur' bound to `M-s o' in isearch mode | |
343 | runs `occur' with the current search string. | |
344 | ||
345 | *** isearch can now search through multiple ChangeLog files. | |
12bbb989 JL |
346 | When running isearch in a ChangeLog file, if the search fails, |
347 | then another C-s tries searching the previous ChangeLog, | |
348 | if there is one (e.g. go from ChangeLog to ChangeLog.12). | |
349 | ||
9097e8af RS |
350 | This is enabled if isearch-buffers-multi is non-nil. |
351 | ||
4c24d241 GM |
352 | *** The part of an isearch that failed to match is highlighted in `isearch-fail' |
353 | face. | |
354 | ||
c3bb6fdb SM |
355 | ** smerge-refine highlights word-level details of changes in conflict. |
356 | It's used automatically as you move through conflicts, see smerge-auto-refine. | |
357 | ||
25e50a58 DN |
358 | ** Diff mode |
359 | ||
360 | *** diff-refine-hunk highlights word-level details of changes in a diff hunk. | |
361 | It's used automatically as you move through hunks, see | |
362 | diff-auto-refine. It is bound to `C-c C-b'. | |
363 | ||
e7940cb5 DN |
364 | *** diff-add-change-log-entries-other-window iterates through the diff |
365 | buffer and tries to create ChangeLog entries for each change. | |
366 | It is bound to `C-x 4 A'. | |
c3bb6fdb | 367 | |
e6a01e4e | 368 | ** archive-mode has basic support to browse Rar archives. |
c3bb6fdb | 369 | |
24cdde13 GM |
370 | ** talk.el has been extended for multiple tty support. |
371 | ||
813fb3fe SM |
372 | ** compilation-auto-jump-to-first-error tells `compile' to jump to |
373 | the first error encountered during compilations. | |
374 | ||
b68769f2 | 375 | ** In the `copyright' package, you can specify your copyright holders' names. |
b649d2e4 SM |
376 | Only copyright lines with holders matching copyright-names-regexp will be |
377 | considered for update. | |
378 | ||
e7ce8577 GM |
379 | ** eldoc highlights the function argument under point |
380 | with the face `eldoc-highlight-function-argument'. | |
381 | ||
ef6d86b5 MR |
382 | ** hide-ifdef-mode permits to shadow ifdef-blocks instead of hiding them. |
383 | See option `hide-ifdef-shadow' and function `hide-ifdef-toggle-shadowing'. | |
384 | ||
b68769f2 | 385 | +++ |
8d5cc579 | 386 | ** defcustom accepts new keyword arguments, `:safe' and `:risky', which |
b68769f2 GM |
387 | set a variable's `safe-local-variable' and `risky-local-variable' property. |
388 | ||
b0d2d4e8 FP |
389 | ** Etags changes. |
390 | *** The --members option is now the default. | |
391 | ||
392 | Use --no-members if you want the old default behaviour of not tagging | |
393 | struct members in C, members variables in C++ and variables in PHP. | |
394 | ||
56dada42 | 395 | ** VC |
397c4757 DN |
396 | *** Clicking on the VC mode-line entry now pops the VC menu. |
397 | ||
9372a958 | 398 | *** The VC mode-line entry now has a tooltip that explains the VC file status. |
cb223bba | 399 | |
082c5622 DN |
400 | *** VC now supports applying VC operations to a set of files at a time. |
401 | ||
4a11b6b5 ER |
402 | This enables VC to work much more effectively with changeset-oriented |
403 | version-control systems such as Subversion, GNU Arch, Mercurial, and | |
404 | Bzr. VC will now pass a multiple-file commit to these systems | |
405 | as a single changeset. | |
406 | ||
b58a65fa TTN |
407 | *** In VC Annotate mode, you can type V to toggle the annotation visibility. |
408 | ||
f3ff0fe9 DN |
409 | *** In VC Annotate mode, you can type f to show the file revision on |
410 | the current line. | |
411 | ||
93a142e1 DN |
412 | ** log-edit now has a command bound to C-c C-d to show the diff for |
413 | the files involved. | |
414 | ||
5d503af9 SM |
415 | ** sgml-electric-tag-pair-mode lets you simultaneously edit matched tag pairs. |
416 | ||
332de56f GM |
417 | ** The appearance of superscript and subscript in TeX is more customizable. |
418 | See the documentation of the variables: tex-fontify-script, | |
419 | tex-font-script-display, tex-suscript-height-ratio, and | |
420 | tex-suscript-height-minimum. | |
421 | ||
2793c9bb RW |
422 | ** BibTeX mode: |
423 | ||
c5578d5f RW |
424 | *** New command `bibtex-initialize' (re)initializes BibTeX buffers. |
425 | ||
2793c9bb RW |
426 | *** New `bibtex-entry-format' options `whitespace', `braces', and |
427 | `string', disabled by default. | |
428 | ||
429 | *** New variable `bibtex-cite-matcher-alist' contains rules to | |
0f3cd6b2 | 430 | identify cited keys in BibTeX entries, used by `bibtex-find-crossref'. |
2793c9bb | 431 | |
c5578d5f | 432 | *** Command `bibtex-url' allows multiple URLs per entry. |
2793c9bb | 433 | |
cc213f24 MA |
434 | +++ |
435 | ** Tramp | |
436 | ||
437 | *** New connection methods. | |
438 | The new methods "plinkx", "plink2", "psftp", "sftp" and "fish" have | |
439 | been introduced. There are also new so-called gateway methods | |
440 | "tunnel" and "socks". | |
441 | ||
442 | *** Multihop syntax has been removed. | |
443 | The pseudo-method "multi" has been removed. Instead of, multi hops | |
444 | can be specified by the new variable `tramp-default-proxies-alist'. | |
445 | ||
446 | *** More default settings. | |
447 | Default values can be set via the variables `tramp-default-user', | |
448 | `tramp-default-user-alist' and `tramp-default-host'. | |
449 | ||
450 | *** Connection information is cached. | |
451 | In order to reduce connection setup, information about used | |
452 | connections are kept persistent in a file. The name of this file is | |
453 | defined in the variable `tramp-persistency-file-name'. | |
454 | ||
455 | *** Control of remote processes. | |
456 | Running processes on a remote host can be controlled by settings in | |
457 | `tramp-remote-path' and `tramp-remote-process-environment'. | |
458 | ||
459 | *** Success of remote copy is checked. | |
460 | When the variable `file-precious-flag' is set, the success of a remote | |
461 | file copy is checked via the file's checksum. | |
462 | ||
d15f7b68 GM |
463 | ** Miscellaneous programming mode changes |
464 | ||
da26ea8d GM |
465 | *** The file etc/emacs.py now supports both Python 2 and 3, meaning |
466 | that either version can be used as inferior Python by python.el. | |
c3f01f42 | 467 | |
4c24d241 GM |
468 | *** Python mode now has `pdbtrack' functionality. When using pdb to |
469 | debug a Python program, pdbtrack notices the pdb prompt and displays | |
470 | the source file and line that the program is stopped at, much the same | |
471 | way as gud-mode does for debugging C programs with gdb. | |
472 | ||
d15f7b68 GM |
473 | *** The variable `fortran-line-length' can change the fixed-form line-length. |
474 | ||
a9f480e8 GM |
475 | *** In Fortran mode, M-; is now bound to the standard comment-dwim, |
476 | rather than fortran-indent-comment. | |
477 | ||
b68769f2 GM |
478 | +++ |
479 | *** (The increasingly misnamed) F90 mode supports Fortran 2003 syntax. | |
2fb6c6be | 480 | |
cf944fa4 RS |
481 | ** Gnus package |
482 | ||
483 | *** The Gnus package has been updated | |
484 | ||
485 | *** There are many news features, bug fixes and improvements. | |
486 | ||
487 | See the file GNUS-NEWS or the node "No Gnus" in the Gnus manual for details. | |
488 | ||
d15f7b68 GM |
489 | ** Miscellaneous |
490 | ||
491 | *** comint-mode uses `start-file-process' now (see Lisp Changes). | |
cc213f24 MA |
492 | If `default-directory' is a remote file name, subprocesses are started |
493 | on the corresponding remote system. | |
494 | ||
d15f7b68 | 495 | *** C-x C-q in dired-mode now runs the command wdired-change-to-wdired-mode, |
40aa8257 JL |
496 | and C-x C-q in wdired-mode exits it with asking a question about |
497 | saving changes. | |
d15f7b68 | 498 | |
4596901f GM |
499 | *** The new command `eshell/info' runs info in an eshell buffer. |
500 | ||
1752e205 GM |
501 | *** The pcmpl-unix package supports hostname completion for ssh and scp. |
502 | ||
3cf86f00 GM |
503 | *** WoMan tries to add locale-specific manual page directories to the |
504 | search path. This can be disabled by setting `woman-locale' to nil. | |
505 | ||
4d1e89e3 GM |
506 | *** The new variable `ffap-rfc-directories' specifies a list of local |
507 | directories in which `ffap-rfc' will first search for RFCs. | |
508 | ||
0bfd685e GM |
509 | \f |
510 | * Changes in Emacs 23.1 on non-free operating systems | |
8ab314f9 | 511 | |
672f99b6 JR |
512 | --- |
513 | ** IPv6 is supported on MS-Windows. | |
514 | Emacs now supports IPv6 on Windows XP and later, and earlier versions | |
515 | of Windows with third party IPv6 stacks installed. Previously IPv6 was | |
516 | supported on other platforms, but not on Windows due to using the winsock | |
517 | 1.1 header file, even though Emacs was linking to the winsock 2 library. | |
518 | ||
3280c5c5 JR |
519 | ** More keys available on MS-Windows. |
520 | Keys normally associated with IMEs, and some exotic keys not normally found | |
521 | on standard keyboards have been given names so they can be bound to functions | |
522 | inside Emacs. If there are keys on your keyboard that have not been exposed | |
523 | to Emacs in the past, try C-h k to see if they are available now. | |
524 | ||
525 | Emacs can now bind functions to the extra buttons for media player and | |
526 | browser control present on some keyboards. These buttons are disabled | |
527 | by default, since enabling them prevents their system-wide use when | |
528 | Emacs has focus. To enable them, set the variable | |
529 | w32-pass-multimedia-buttons to nil. See the doc string of that variable | |
530 | for the list of extra keys that are available. | |
0bfd685e GM |
531 | \f |
532 | * Incompatible Lisp Changes in Emacs 23.1 | |
8ec65cd7 | 533 | |
d82c3d44 GM |
534 | ** The behavior of map-char-table has changed. It may call the |
535 | specified function with a cons (FROM . TO) as a key if characters in | |
536 | that range have the same value. | |
537 | ||
538 | ** The value of the function `charset-id' is now always 0. | |
539 | ||
540 | ** The functions `register-char-codings' and `coding-system-spec' | |
541 | have been removed. | |
542 | ||
543 | ** Many codepage related functions have been removed. They are: | |
544 | cp-make-coding-systems-for-codepage, cp-charset-for-codepage, | |
545 | cp-language-for-codepage, cp-offset-for-codepage, | |
546 | cp-supported-codepages | |
547 | You don't need them anymore because coding systems created by these | |
548 | functions are supported from the start now. | |
549 | ||
03605a28 MA |
550 | +++ |
551 | ** The function `dired-call-process' has been removed. | |
552 | ||
777ea444 GM |
553 | ** The variable `byte-compile-warnings' can now be a list starting with `not', |
554 | meaning to disable the specified warnings. The meaning of this list | |
555 | may therefore be the reverse of what you expect (of course, this is | |
556 | only an issue if you make use of the new `not' syntax). Rather than | |
557 | checking/manipulating elements directly, use the new functions | |
558 | `byte-compile-warning-enabled-p', `byte-compile-disable-warning', and | |
559 | `byte-compile-enable-warning.' | |
560 | ||
69df9d6d GM |
561 | ** `mode-name' is no longer guaranteed to be a string. |
562 | Use `(format-mode-line mode-name)' to ensure a string value. | |
563 | ||
0bfd685e GM |
564 | \f |
565 | * Lisp Changes in Emacs 23.1 | |
8ab314f9 | 566 | |
64663f06 | 567 | ** clone-indirect-buffer now runs the clone-indirect-buffer-hook. |
d82c3d44 | 568 | |
50bfa18a | 569 | ** `beginning-of-defun-function' now takes one argument, the count |
d82c3d44 | 570 | given to `beginning-of-defun'. |
50bfa18a | 571 | |
39d0bf74 RS |
572 | ** The variable `inhibit-changing-match-data', if non-nil, prevents the |
573 | search and match primitives from changing the match data. | |
574 | ||
59b5d020 JL |
575 | +++ |
576 | ** New function `match-substitute-replacement' returns the result of | |
577 | `replace-match' without actually using it in the buffer. | |
578 | ||
2d105adf RS |
579 | ** If a local hook function has a non-nil `permanent-local-hook' |
580 | property, then `kill-all-local-variables' does not remove it from | |
581 | the local value of the hook variable. This means it remains | |
582 | even if you change major modes. | |
583 | ||
b9694062 JL |
584 | +++ |
585 | ** A list of default values can be specified for the DEFAULT argument of | |
586 | functions `read-from-minibuffer', `read-string', `read-command', | |
587 | `read-variable', `read-buffer', `completing-read'. Elements of this list | |
588 | are available for inserting into the minibuffer by typing `M-n'. | |
589 | For empty input these functions return the first element of this list. | |
590 | ||
66dc1ca2 RS |
591 | ** `custom-note-var-changed' tells Custom to treat the change in a certain |
592 | variable as having been made within Custom. | |
593 | ||
ab6198b2 SM |
594 | ** `frame-inherited-parameters' lets new frames inherit parameters from |
595 | the selected frame. | |
66dc1ca2 | 596 | |
c60d543d | 597 | ** Commands should use `use-region-p' to test whether there is |
d03b9b31 RS |
598 | an active region that they should operate on. |
599 | ||
c60d543d RS |
600 | ** `region-active-p' returns non-nil when Transient Mark mode |
601 | is enabled and there is an active region. This is NOT the best function | |
602 | to use to test whether a command should operate on the region instead | |
603 | of the usual behavior -- for that, use `use-region-p'. | |
604 | ||
4f4a84ec SM |
605 | ** New keymap `input-decode-map' overrides like key-translation-map, but |
606 | applies before function-key-map. Also it is terminal-local contrary to | |
607 | key-translation-map. Terminal-specific key-sequences are generally added to | |
608 | this map rather than to function-key-map now. | |
609 | ||
967b2682 GM |
610 | ** The new macro `declare-function' suppresses compiler warnings about |
611 | undefined functions. The new `check-declare' package verifies that such | |
612 | statements are accurate (i.e. the functions are actually defined in | |
613 | the specified files). | |
614 | ||
d9774611 RS |
615 | ** The new function `read-color' reads a color name using the minibuffer. |
616 | ||
833547aa RS |
617 | ** The new function `face-all-attributes' returns an alist |
618 | describing all the basic attributes of a given face. | |
619 | ||
63571b5a RS |
620 | ** `interprogram-paste-function' can now return one string or a list |
621 | of strings. In the latter case, Emacs puts the second and following | |
622 | strings on the kill ring. | |
623 | ||
d82c3d44 GM |
624 | ** Character code, representation, and charset changes. |
625 | ||
626 | The character code space is now 0x0..0x3FFFFF with no gap. | |
627 | Characters of code 0x0..0x10FFFF are Unicode characters of the same code points. | |
628 | Characters of code 0x3FFF80..0x3FFFFF are raw 8-bit bytes. | |
629 | ||
630 | Generic characters no longer exist. | |
631 | ||
632 | In buffer and string, characters are represented by UTF-8 byte | |
633 | sequence in a multibyte buffer/string. | |
634 | ||
635 | The concept of a charset has changed. A single character may belong to | |
636 | multiple charsets (e.g. a-grave, U+00E0, belongs to charsets unicode, | |
637 | iso-8859-1, iso-8859-3, etc). | |
638 | ||
639 | *** The new function `characterp' returns t if and only if the argument | |
640 | is a character. | |
641 | ||
642 | *** The new function `max-char' returns the maximum character code | |
643 | (currently it is #x3FFFFF). | |
644 | ||
645 | *** The functions `encode-char' and `decode-char' now accept any character sets. | |
646 | ||
647 | *** The function `define-charset' now accepts a completely different | |
648 | form of arguments (old-style arguments still work). | |
649 | ||
650 | *** The new function `define-charset-alias' defines an alias of a charset. | |
651 | ||
652 | *** The value of the function `char-charset' depends on the current | |
653 | priorities of charsets. | |
654 | ||
655 | *** The new function `charset-priority-list' returns the list of | |
656 | charsets ordered by priority. | |
657 | ||
658 | *** The new function `set-charset-priority' sets priorities of charsets. | |
659 | ||
660 | *** The new function `unibyte-charset' returns the current unibyte | |
661 | charset. The unibyte charset determines how unibyte/multibyte | |
662 | conversion is done. | |
663 | ||
664 | *** The new function `set-unibyte-charset' sets the unibyte charset. | |
665 | ||
666 | *** The new function `unibyte-string' make a unibyte string from bytes. | |
667 | ||
668 | *** The new function `define-char-code-property' defines a character | |
669 | code property. | |
670 | ||
671 | *** The new function `char-code-property-description' returns the | |
672 | description string of a character code property. | |
673 | ||
674 | *** The function get-char-code-property now accepts many Unicode base | |
675 | character properties. They are `name', `general-category', | |
676 | `canonical-combining-class', `bidi-class', `decomposition', | |
677 | `decimal-digit-value', `digit-value', `numeric-value', `mirrored', | |
678 | `old-name', `iso-10646-comment', `uppercase', `lowercase', and | |
679 | `titlecase'. | |
680 | ||
681 | *** The new variable `find-word-boundary-function-table' is a | |
682 | char-table of functions to search for a word boundary. | |
683 | ||
684 | *** The new variable `char-script-table' is a char-table of script names. | |
685 | ||
686 | *** The new variable `char-width-table' is a char-table of character widths. | |
687 | ||
688 | *** The new variable `print-charset-text-property' controls how to | |
689 | handle `charset' text property on printing a string. | |
690 | ||
691 | *** The new variable `printable-chars' is a char-table defining if a | |
692 | character is printable or not. | |
693 | ||
694 | *** The functions `modify-syntax-entry' and `modify-category-entry' now | |
695 | accepts a cons of characters as the first argument, and modify all | |
696 | entries in that range of characters. | |
697 | ||
698 | *** The functions `char-bytes', `chars-in-region', and `char-valid-p' are | |
699 | obsolete. | |
700 | ||
701 | ** Code conversion changes. | |
702 | ||
703 | *** The new function `define-coding-system' should be used to define a | |
704 | coding system instead of `make-coding-system' (which is now obsolete). | |
705 | ||
706 | *** The functions `encode-coding-region' and `decode-coding-region' | |
707 | have an optional 4th argument to specify where the result of | |
708 | conversion should go. | |
709 | ||
710 | *** The functions `encode-coding-string' and `decode-coding-string' | |
711 | have an optional 4th argument specifying a buffer to store the result | |
712 | of conversion. | |
713 | ||
714 | *** The new function `with-coding-priority' executes the body part with | |
715 | the specified coding system priority order. | |
716 | ||
717 | *** The new function `check-coding-systems-region' checks if the text | |
718 | in the region is encodable by the specified coding systems. | |
719 | ||
720 | *** The new function `coding-system-aliases' returns a list of aliases | |
721 | of a coding system. | |
722 | ||
723 | *** The new function `coding-system-charset-list' returns a list of | |
724 | charsets supported by a coding system. | |
725 | ||
726 | *** The new function `coding-system-priority-list' returns a list of | |
727 | coding systems ordered by their priorities. | |
728 | ||
729 | *** The new function `set-coding-system-priority' sets priorities of | |
730 | coding systems. | |
731 | ||
732 | *** The functions `set-coding-priority' and `make-coding-system' are obsolete. | |
733 | ||
734 | ** There is a new input method, Robin, different from Quail. | |
735 | It has three functionalities: | |
736 | i) a simple input method (converts an ASCII sequence into a string). | |
737 | ii) converts an existing buffer substring into another string | |
738 | iii) reverse conversion (each character produced by a | |
739 | robin rule can hold the original ASCII sequence as a char-code-property) | |
740 | ||
741 | *** The new function `robin-define-package' defines a Robin package. | |
742 | ||
743 | *** The new function `robin-modify-package' modifies an existing Robin package. | |
744 | ||
745 | *** The new function `robin-use-package' starts using a Robin package | |
746 | as an input method. | |
747 | ||
748 | ** Composition changes. | |
749 | ||
750 | *** New functions and variables `auto-composition-mode' and | |
751 | `global-auto-composition-mode' toggles the new minor mode Auto | |
752 | Composition Mode locally and globally. | |
753 | ||
754 | *** New variable `auto-composition-function' is a function used in | |
755 | Auto Composition Mode to compose characters. The default value is the | |
756 | function `auto-compose-chars'. | |
757 | ||
2b7a2553 GM |
758 | ** Changes related to the new font backend. |
759 | ||
b19aa6dd GM |
760 | Which font backends to use can be specified by the X resource "FontBackend". |
761 | For instance, to use both X core fonts and Xft fonts: | |
2b7a2553 | 762 | |
b19aa6dd | 763 | Emacs.FontBackend: x,xft |
2b7a2553 | 764 | |
b19aa6dd GM |
765 | If this resource is not set, Emacs tries to use all font backends |
766 | available on your graphic device. | |
d82c3d44 GM |
767 | |
768 | *** New frame parameter `font-backend' specifies a list of | |
769 | font-backends supported by the frame's graphic device. On X, they are | |
770 | currently `x' and `xft'. | |
771 | ||
772 | *** New function `fontp' checks if the argument is a font-spec or font-entity. | |
773 | ||
774 | *** New function `font-spec' creates a new font-spec object. | |
775 | ||
776 | *** New function `font-get' returns a font property value. | |
777 | ||
778 | *** New function `font-put' sets a font property value. | |
779 | ||
780 | *** New function `list-fonts' returns a list of font-entities matching | |
781 | the given specification. | |
782 | ||
783 | *** New function `list-families' returns a list of family names of | |
784 | available fonts. | |
785 | ||
786 | *** New function `font-font' returns a font-entity best matching with | |
787 | the given specification. | |
788 | ||
789 | *** New function `font-xlfd-name' returns an XLFD name of a given font | |
790 | (font-spec, font-entity, or font-object). | |
791 | ||
792 | *** New function `clear-font-cache' clears all font caches. | |
793 | ||
794 | *** The function `set-fontset-font' now accepts a script name as the | |
795 | second argument, and has an optional 5th argument to control how to | |
796 | set the font. | |
797 | ||
24cdde13 GM |
798 | ** Changes related to multiple tty support. |
799 | ||
b12f6e85 SM |
800 | *** $TERM is now set to `dumb' for subprocesses. If you want to know the |
801 | $TERM inherited by Emacs you will have to look inside initial-environment. | |
802 | ||
6168122d SM |
803 | *** $DISPLAY is now dynamically inherited from the frame's `display'. |
804 | ||
24cdde13 GM |
805 | *** The `window-system' variable has been made frame-local. The new |
806 | `initial-window-system' variable contains the `window-system' value | |
807 | for the first frame. | |
808 | ||
809 | *** You can specify a terminal device (`tty' parameter) and a terminal | |
810 | type (`tty-type' parameter) to `make-terminal-frame'. | |
811 | ||
812 | *** The new function `make-frame-on-tty' allows you to create a new | |
813 | frame on another tty device interactively. | |
814 | ||
815 | *** The function `make-frame-on-display' now works during a tty | |
816 | session, and `make-frame-on-tty' works during a graphical session. | |
817 | ||
da406961 | 818 | *** New functions: `delete-tty', `suspend-tty', `resume-tty'. |
24cdde13 | 819 | |
419f8f49 SM |
820 | *** A new data type for terminals with functions: `get-device-terminal', |
821 | `terminal-parameters', `terminal-parameter', `set-terminal-parameter'. | |
24cdde13 | 822 | |
1816bda7 | 823 | *** New hooks: `suspend-tty-functions' and `resume-tty-functions' |
92cd6a7c | 824 | are called after a tty frame has been suspended or resumed, |
de3054d5 | 825 | respectively. The functions are called with the terminal id of the frame |
92cd6a7c DN |
826 | being suspended/resumed as a parameter. |
827 | ||
01ff458e | 828 | *** New function: `environment'. |
da406961 | 829 | |
4f4a84ec | 830 | *** New variable: `local-function-key-map'. |
01ff458e SM |
831 | This in addition to the global function-key-map variable that |
832 | already existed. The global variable is not used directly any more; | |
833 | instead, the local-function-key-map is initialized so as to inherit from | |
834 | function-key-map. | |
da406961 | 835 | |
82866ad5 SM |
836 | *** `initial-environment' holds the environment inherited from Emacs's parent. |
837 | ||
24cdde13 GM |
838 | *** The `keyboard-translate-table' variable and the terminal and |
839 | keyboard coding systems have been made terminal-local. | |
840 | ||
1aa423e9 SM |
841 | *** In addition to the global function-key-map, Emacs has terminal-local |
842 | local-function-key-map variables, and uses them instead of the | |
24cdde13 GM |
843 | global keymaps to set up translations and function key sequences |
844 | relevant to a specific terminal device. | |
845 | ||
846 | ||
90ab5c62 SM |
847 | ** You can now also pass the value of the `invisible' property to invisible-p |
848 | to check whether it would cause the text to be invisible. Convenient when | |
849 | checking invisibility of text which has no buffer position | |
850 | (e.g. in before/after-strings). | |
9f44d41a | 851 | |
ea2e3ef4 RS |
852 | ** Non-breaking space now acts as whitespace. |
853 | ||
41bd52f7 | 854 | +++ |
8d371994 RS |
855 | ** In `condition-case', a handler can specify "let the debugger run first". |
856 | ||
857 | You do this by writing `debug' in the list of conditions to be handled, | |
858 | like this: | |
859 | ||
860 | (condition-case nil | |
861 | (foo bar) | |
862 | ((debug error) nil)) | |
863 | ||
0a963185 SM |
864 | ** The `require-match' argument to `completing-read' accepts a new value |
865 | `confirm-only'. | |
866 | ||
c69b0314 SM |
867 | +++ |
868 | ** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly. | |
869 | ||
9f44d41a RS |
870 | ** New function `window-full-width-p' returns t if a window is as wide |
871 | as its frame. | |
872 | ||
873 | ** The new function `split-string-and-unquote' does (what?) | |
874 | ||
875 | ** The new function `combine-and-quote-strings' does (what?) | |
876 | ||
877 | ** The new function `image-refresh' refreshes all images associated | |
878 | with a given image specification. | |
879 | ||
abf13a8b CY |
880 | +++ |
881 | ** New variable `user-emacs-directory'. | |
882 | Use this instead of "~/.emacs.d". | |
883 | ||
b2b387f9 | 884 | +++ |
0f3cd6b2 | 885 | ** The new function `start-file-process' is similar to `start-process', |
b2b387f9 | 886 | but obeys file handlers. The file handler is chosen based on |
6dbe7eb4 MA |
887 | `default-directory'. The functions `start-file-process-shell-command' |
888 | and `process-file-shell-command' are also new; they call internally | |
0f3cd6b2 | 889 | `start-file-process' and `process-file', respectively. |
b2b387f9 | 890 | |
967b2682 GM |
891 | ** The new function `process-lines' executes an external program and |
892 | returns its output as a list of lines. | |
893 | ||
64639e26 | 894 | +++ |
41bd52f7 MA |
895 | ** `file-remote-p' has new optional parameters IDENTIFICATION and CONNECTED. |
896 | IDENTIFICATION specifies which part of the remote identifier has to be | |
897 | returned. With CONNECTED passed non-nil, it is checked whether a | |
898 | remote connection has been established already. | |
64639e26 | 899 | |
45595a4f RS |
900 | ** The two new functions `looking-at-p' and `string-match-p' can do |
901 | the same matching as `looking-at' and `string-match' without changing | |
902 | the match data. | |
89835619 SM |
903 | |
904 | ** The interactive-form of a function can be added post-facto via the | |
905 | `interactive-form' symbol property. Mostly useful to add complex interactive | |
906 | forms to subroutines. | |
9bae34bf | 907 | \f |
0bfd685e | 908 | * New Packages for Lisp Programming in Emacs 23.1 |
efeb796b | 909 | |
9097e8af RS |
910 | ** The package isearch-multi.el has been added. It implements a new mode |
911 | `isearch-buffers-minor-mode' that allows isearch to search through | |
912 | multiple buffers. In this mode a new variable | |
913 | `isearch-buffers-next-buffer-function' defines the function to call | |
914 | to get the next buffer to search in the series of multiple buffers. | |
915 | ||
d53a60a6 TTN |
916 | ** The new package avl-tree.el deals with the AVL tree data structure. |
917 | ||
05197f40 | 918 | \f |
a933dad1 | 919 | ---------------------------------------------------------------------- |
5b87ad55 | 920 | This file is part of GNU Emacs. |
a933dad1 | 921 | |
5b87ad55 GM |
922 | GNU Emacs is free software; you can redistribute it and/or modify |
923 | it under the terms of the GNU General Public License as published by | |
64be3a42 | 924 | the Free Software Foundation; either version 3, or (at your option) |
5b87ad55 GM |
925 | any later version. |
926 | ||
927 | GNU Emacs is distributed in the hope that it will be useful, | |
928 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
929 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
930 | GNU General Public License for more details. | |
a933dad1 | 931 | |
5b87ad55 GM |
932 | You should have received a copy of the GNU General Public License |
933 | along with GNU Emacs; see the file COPYING. If not, write to the | |
934 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
935 | Boston, MA 02110-1301, USA. | |
a933dad1 | 936 | |
05197f40 | 937 | \f |
a933dad1 DL |
938 | Local variables: |
939 | mode: outline | |
940 | paragraph-separate: "[ \f]*$" | |
941 | end: | |
ab5796a9 | 942 | |
a533413c | 943 | arch-tag: e759449d-88b3-4de4-9900-3a6c3dfa23e2 |