Corrected type in ChangeLog
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29b7722a 1GNU Emacs NEWS -- history of user-visible changes.
5b87ad55 2
ab422c4d 3Copyright (C) 2010-2013 Free Software Foundation, Inc.
5b87ad55 4See the end of the file for license conditions.
a933dad1 5
893db5bc 6Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
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7If possible, use M-x report-emacs-bug.
8
eb199145 9This file is about changes in Emacs version 24.
9a21d88b 10
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11See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12and NEWS.1-17 for changes in older Emacs versions.
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13
14You can narrow news to a specific version by calling `view-emacs-news'
15with a prefix argument or by typing C-u C-h C-n.
3f7194ed 16
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17Temporary note:
18+++ indicates that the appropriate manual has already been updated.
19--- means no change in the manuals is called for.
20When you add a new item, please add it without either +++ or ---
21so we will look at it and add it to the manual.
22
23\f
95a32efb 24* Installation Changes in Emacs 24.4
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25
26** Emacs can be compiled with POSIX ACL support.
27This happens by default if a suitable support library is found at
28build time, like libacl on GNU/Linux. To prevent this, use the
29configure option `--without-acl'.
30
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31** The configure option --with-crt-dir has been removed.
32It is no longer needed, as the crt*.o files are no longer linked specially.
33
c57b2d76 34\f
95a32efb 35* Startup Changes in Emacs 24.4
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36
37\f
95a32efb 38* Changes in Emacs 24.4
c6c08d3f 39
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40+++
41** `apropos-variable' is now `apropos-user-option'
42`apropos-user-option' shows all user options while `apropos-variable'
43shows all variables. When called with a universal prefix argument,
44the two commands swap their behaviors. When `apropos-do-all' is
45non-nil, they output the same results.
46
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47+++
48** `eval-defun' on an already defined defcustom calls the :set function,
49if there is one.
50
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51** If the new variable `enable-dir-local-variables' is nil,
52directory local variables are ignored. May be useful for some modes
53that want to ignore directory-locals while still respecting file-locals.
54
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55** The option `set-mark-default-inactive' has been deleted.
56This unfinished feature was introduced by accident in Emacs 23.1;
57simply disabling Transient Mark mode does the same thing.
58
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59** `initial-buffer-choice' can now specify a function to set up the
60initial buffer.
61
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62** ACL support has been added.
63+++
64*** Emacs preserves the ACL entries of files when backing up.
65+++
66*** New functions `file-acl' and `set-file-acl' get and set the ACL
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67entries of a file. On GNU/Linux, the POSIX ACL interface is used via
68libacl. On MS-Windows, the NT Security APIs are used to emulate the
69POSIX ACL interfaces.
7c3d167f 70
99548339 71** New option `scroll-bar-adjust-thumb-portion'.
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72Available only on X, this option allows to control over-scrolling
73using the scroll bar (i.e. dragging the thumb down even when the end
74of the buffer is visible).
99548339 75
c57b2d76 76\f
95a32efb 77* Editing Changes in Emacs 24.4
4f0552c2 78
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79** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
80bound to <f11> and M-<f10>, respectively.
37f38bca 81
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82** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
83Eg View mode, etc.
84
4f0552c2 85\f
95a32efb 86* Changes in Specialized Modes and Packages in Emacs 24.4
4f0552c2 87
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88** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
89Affected files:
90~/.emacs.d/timelog replaces ~/.timelog
91~/.emacs.d/todo-do replaces ~/.todo-do
92~/.emacs.d/todo-done replaces ~/.todo-done
93~/.emacs.d/todo-top replaces ~/.todo-top
94~/.emacs.d/vip replaces ~/.vip
95~/.emacs.d/viper replaces ~/.viper
96~/.emacs.d/ido.last replaces ~/.ido.last
97~/.emacs.d/kkcrc replaces ~/.kkcrc
98~/.emacs.d/quickurls replaces ~/.quickurls
99~/.emacs.d/idlwave replaces ~/.idlwave
100~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
101~/.emacs.d/places replaces ~/.emacs-places
102~/.emacs.d/shadows replaces ~/.shadows
103~/.emacs.d/shadow_todo replaces ~/.shadow_todo
104~/.emacs.d/strokes replaces ~/.strokes
105~/.emacs.d/notes replaces ~/.notes
106~/.emacs.d/type-break replaces ~/.type-break
e56221d5 107
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108** Delphi mode is now called OPascal mode.
109*** All delphi-* variables and functions have been renamed to opascal-*.
110*** `delphi-newline-always-indents' is not supported any more
111use `electric-indent-mode' instead.
112*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.
113
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114** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.
115
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116** completing-read-multiple's separator can now be a regexp.
117The default separator is changed to allow surrounding spaces around the comma.
118
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119** Battery
120
121*** Battery information via the BSD `apm' utility is now supported.
122
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123** cl-lib
124
125*** New macro cl-tagbody.
126
127+++
128*** letf is now just an alias for cl-letf.
129
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130** Calc
131
132*** Calc by default now uses the Gregorian calendar for all dates, and
133uses January 1, 1 AD as its day number 1. Previously Calc used the
134Julian calendar for dates before September 14, 1752, and it used
135December 31, 1 BC as its day number 1; the new scheme is more
136consistent with Calendar's calendrical system and day numbering.
137
138*** The new variable `calc-gregorian-switch' lets you configure the
139date when Calc switches from the Julian to the Gregorian calendar.
140Nil, the default value, means to always use the Gregorian calendar.
141The value (YEAR MONTH DAY) means to start using the Gregorian calendar
142on the given date.
143
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144*** Support for ISO 8601 dates.
145
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146** Dired
147
148*** New minor mode `dired-hide-details-mode' hides details.
149
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150** ERC
151
152*** New option `erc-accidental-paste-threshold-seconds'.
153If set to a number, this can be used to avoid accidentally paste large
154amounts of data into the ERC input.
155
156** Icomplete is a bit more like IDO.
157*** key bindings to navigate through and select the completions.
158*** The icomplete-separator is customizable, and its default has changed.
159*** Removed icomplete-show-key-bindings.
160
2a43515a 161** Image mode
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162
163*** New commands `n' (`image-next-file') and `p' (`image-previous-file')
164visit the next image file and the previous image file in the same
165directory, respectively.
166
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167*** New commands to show specific frames of multi-frame images.
168`f' (`image-next-frame') and `b' (`image-previous-frame') visit the
169next or previous frame. `F' (`image-goto-frame') shows a specific frame.
170
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171---
172*** The command `image-mode-fit-frame' deletes other windows.
173When toggling, it restores the frame's previous window configuration.
174It also has an optional frame argument, which can be used by Lisp
175callers to fit the image to a frame other than the selected frame.
176
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177** Info
178
179*** New face `info-index-match' is used to highlight matches in index
180entries displayed by `Info-index-next', `Info-virtual-index' and
181`info-apropos'.
182
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183** Isearch
184
185*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
186and adds it to the search string.
187
5a3cbc03 188** MH-E has been updated to MH-E version 8.5.
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189See MH-E-NEWS for details.
190
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191---
192** The unrmail command converts from BABYL to mboxrd rather than mboxo.
193Customize `unrmail-mbox-format' to change this.
194
195---
196** Similarly, customize `rmail-mbox-format' to influence some minor aspects
197of how Rmail displays non-MIME messages.
198
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199+++
200** New function `ses-rename-cell' to give SES cells arbitrary names.
201
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202** trace-function was largely rewritten.
203New features include:
204- no prompting for the destination buffer, unless a prefix-arg was used.
205- additionally to prompting for a destination buffer, when a prefix-arg is
206 used, the user can enter a "context", i.e. Lisp expression whose value at the
207 time the function is entered/exited will be printed along with the function
208 name and arguments. Useful to trace the value of (current-buffer) or
209 (point) when the function is invoked.
210
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211** New command `delete-duplicate-lines' has two types of operation:
212when its arg ADJACENT is non-nil (when called interactively with C-u C-u)
213it works like the utility `uniq'. Otherwise by default it deletes
214duplicate lines everywhere in the region without regard to adjacency.
215
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216** New `cycle-spacing' command allows cycling between having just one
217space, no spaces, or reverting to the original spacing. Like
218`just-one-space' command it can handle or ignore newlines and
219leave different number of spaces.
220
aefa2ead 221** Tramp
26280467 222
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223+++
224*** New connection method "adb", which allows to access Android
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225devices by the Android Debug Bridge. The variable `tramp-adb-program'
226can be used to adapt the path of the "adb" program, if needed.
26280467 227
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228*** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
229"scpc" and "rsyncc" are discontinued. The ssh option
230"ControlMaster=auto" is set automatically in all ssh-based methods,
231when possible.
26280467 232
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233+++
234*** Handlers for `file-acl' and `set-file-acl' for remote machines
235which support POSIX ACLs.
aefa2ead 236
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237** Woman
238
239*** The commands `woman-default-faces' and `woman-monochrome-faces'
240are obsolete. Customize the `woman-* faces instead.
241
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242** Obsolete packages:
243
244*** longlines.el is obsolete; use visual-line-mode instead.
245
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246*** terminal.el is obsolete; use term.el instead.
247
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248+++
249*** yow.el is obsolete; use fortune.el or cookie1.el instead.
250
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251---
252*** The Info-edit command is obsolete. Editing Info nodes by hand
253has not been relevant for some time.
254
4f0552c2 255\f
95a32efb 256* New Modes and Packages in Emacs 24.4
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257** New `superword-mode' in subword.el
258`superword-mode' overrides the default word motion commands to treat
259symbol_words as a single word, similar to what `subword-mode' does and
260using the same internal functions.
261
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262** New nadvice.el package offering lighter-weight advice facilities.
263It is layered as:
264- add-function/remove-function which can be used to add/remove code on any
265 function-carrying place, such as process-filters or `<foo>-function' hooks.
266- advice-add/advice-remove to add/remove a piece of advice on a named function,
267 much like `defadvice' does.
268
c57b2d76 269\f
95a32efb 270* Incompatible Lisp Changes in Emacs 24.4
da03ef8a 271
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272** `read-event' does not return decoded chars in ttys any more.
273Just as was the case in Emacs-22 and before, decoding of tty input according to
274keyboard-coding-system is not performed in read-event any more. But contrary
275to that past, it is still done before input-decode-map/function-key-map/...
276
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277** Removed inhibit-local-menu-bar-menus.
278
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279** frame-local variables that affect redisplay do not work any more.
280More specifically, the redisplay does not bother to check for a frame-local
281value when looking up variables.
282
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283** nil and "unbound" are indistinguishable in symbol-function.
284`symbol-function' never signals `void-function' any more.
285`fboundp' returns non-nil if the symbol was `fset' to nil.
286
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287** `defadvice' does not honor the `freeze' flag and cannot advise
288special-forms any more.
7db1bda8 289
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290** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
291VAR was bound to nil which was not tremendously useful and just lead to
292spurious warnings about an unused var.
293
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294** The return value of `backup-buffer' has changed.
295The second argument is no longer an SELinux context, instead it is an
296alist of extended attributes as returned by the new function
297`file-extended-attributes'. The attributes can be applied to another
298file using `set-file-extended-attributes'.
299
c57b2d76 300\f
97a1cd9d 301* Lisp Changes in Emacs 24.4
57618ecf 302
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303** `dont-compile' is declared obsolete.
304
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305** `get-upcase-table' is obsoleted by the new `case-table-get-table'.
306
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307** Support for filesystem notifications.
308Emacs now supports notifications of filesystem changes, such as
309creation, modification, and deletion of files. This requires the
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310'inotify' API on GNU/Linux systems. On MS-Windows systems, this is
311supported for Windows XP and newer versions.
81606b10 312
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313** Changes in autorevert.el
314
315---
316*** If Emacs is compiled with file notification support, notifications
317are used instead of checking the time stamp of the files. You can
318disable this by setting the user option `auto-revert-use-notify' to
319nil. Alternatively, a regular expression of directories to be
320excluded from file notifications can be specified by
321`auto-revert-notify-exclude-dir-regexp'.
322
323---
324*** The new user option `auto-revert-remote-files' enables reversion
325of remote files when set to non-nil.
326
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327** Face changes
328
329*** The `face-spec-set' is now analogous to `setq' for face specs.
330Its third arg now accepts values specifying exactly which face spec to
331set (defface, custom, or user spec), and it directly sets the relevant
332property using the supplied face spec.
333
334*** Face specs set via Custom themes now replace the `defface' spec
335rather than inheriting from it (as do face specs set via Customize).
336
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337*** New face characteristic (supports :underline (:style wave))
338specifies whether or not the terminal can display a wavy line.
339
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340** Image API
341
342+++
343*** `image-animated-p' is now `image-multi-frame-p'.
344It returns non-nil for any image that contains multiple frames,
345whether or not it specifies a frame delay.
346
347+++
348*** When animating images that do not specify a frame delay,
349Emacs uses `image-default-frame-delay'.
350
351+++
352*** New functions `image-current-frame' and `image-show-frame' for getting
353and setting the current frame of a multi-frame image.
354
855b17af 355** time-to-seconds is not obsolete any more.
231d8498 356** New function special-form-p.
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357** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
358text-property on the first char.
359
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360** The `defalias-fset-function' property lets you catch calls to defalias
361and redirect them to your own function instead of `fset'.
362
70743157 363** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
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364When you edit DIR/FILE, Emacs normally creates a symbolic link
365DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
366is being edited. Formerly, if there was already a non-symlink file
367named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
368through DIR/.#FILE.9. These fallbacks have been removed, so that
369Emacs now no longer locks DIR/FILE in that case.
370
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371On file systems that do not support symbolic links, the lock is now a
372regular file with contents being what would have been in the symlink.
b5029e23 373
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374** The 9th element returned by `file-attributes' is now unspecified.
375Formerly, it was t if the file's gid would change if file were deleted
376and recreated. This value has been inaccurate for years on many
377platforms, and nobody seems to have noticed or cared.
378
379** The function `file-ownership-preserved-p' now has an optional
380argument GROUP which causes it check for file group too. This can be
381used in place of the 9th element of `file-attributes'.
382
383** New functions `group-gid' and `group-real-gid'.
384
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385** The 6th argument to `copy-file' has been renamed to
386`preserve-extended-attributes' as it now handles both SELinux context
387and ACL entries.
388
c57b2d76 389\f
97a1cd9d 390* Changes in Emacs 24.4 on Non-Free Operating Systems
95a32efb 391
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392+++
393** The "generate a backtrace on fatal error" feature now works on MS Windows.
394The backtrace is written to the 'emacs_backtrace.txt' file in the
395directory where Emacs was running.
396
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397+++
398** The variable `buffer-file-type' is no longer supported.
399Setting it has no effect, and %t in the mode-line format is ignored.
400Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
401modifying it has no effect.
402
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403---
404** Lock files now work on MS-Windows.
405This allows to avoid losing your edits if the same file is being
406edited in another Emacs session or by another user. See the node
407"Interlocking" in the Emacs User Manual for the details. To disable
408file locking, customize `create-lockfiles' to nil.
409
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410** Improved fullscreen support on Mac OS X.
411Both native (>= OSX 10.7) and "old style" fullscreen are supported.
412Customize `ns-use-native-fullscreen' to change style. For >= 10.7
413native is the default.
414
95a32efb 415\f
2a1e2476 416* Installation Changes in Emacs 24.3
b8df54ff 417
6bc66c10 418** The default X toolkit is now Gtk+ version 3.
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419If you don't pass `--with-x-toolkit' to configure, or if you use
420`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
421to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
d71a6517 422You can explicitly require a specific version by passing
823b2fb6 423`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
da3d2105 424
6bc66c10 425** New configure option `--enable-link-time-optimization', to utilize
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426an appropriate feature provided by GCC since version 4.5.0.
427
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428** New configure option `--without-all' to disable most of the optional
429features (image support, etc.) that are normally enabled by default.
b8df54ff 430
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431** New configure option `--enable-gcc-warnings' (for developing/debugging
432Emacs). If building with GCC, this enables compile-time checks that
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433warn/give errors about possibly-questionable C code. On a recent GNU
434system there should be no warnings; on older and on non-GNU systems
435the results may be useful to developers.
b8df54ff 436
823b2fb6 437** The configure option `--enable-use-lisp-union-type' has been
6bc66c10 438renamed to `--enable-check-lisp-object-type', as the resulting
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439Lisp_Object type no longer uses a union to implement the compile time
440check that this option enables.
441
823b2fb6 442** The configure option `--disable-maintainer-mode' has been removed,
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443as it was confusingly-named and rarely useful.
444
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445** The configure options `--program-prefix', `--program-suffix', and
446`--program-transform-name' apply to more than just the installed
447binaries. Now they also affect the man pages, icons, and the
448etc/emacs.desktop file; but not the info pages, since this would break
449links between the various manuals.
1a9c6830 450
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451** You can use `NO_BIN_LINK=t make install' to prevent the installation
452overwriting "emacs" in the installation bin/ directory with a link
6bc66c10 453to "emacs-VERSION".
823b2fb6 454
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455** Emacs uses libtinfo in preference to libncurses, if available.
456
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457** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
458/usr/pkg/lib to the linker search path. You must add them yourself if
459you want them.
460
6bc66c10 461** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
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462(from the bin and libexec directories, respectively). The former is
463no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
464
a1ed8b05 465\f
2a1e2476 466* Startup Changes in Emacs 24.3
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467
468** Emacs no longer searches for `leim-list.el' files beneath the standard
469lisp/ directory. There should not be any there anyway. If you have
823b2fb6 470been adding them there, put them somewhere else; e.g., site-lisp.
e5fcdb5e 471
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472** The `--no-site-lisp' command line option now works for Nextstep builds.
473
a1ed8b05 474\f
2a1e2476 475* Changes in Emacs 24.3
a1ed8b05 476
6bc66c10 477** Help
c89926a5 478
6bc66c10 479*** `C-h f' (`describe-function') can now perform autoloading.
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480When this command is called for an autoloaded function whose docstring
481contains a key substitution construct, that function's library is
482automatically loaded, so that the documentation can be shown
483correctly. To disable this, set `help-enable-auto-load' to nil.
484
485*** `C-h f' now reports previously-autoloaded functions as "autoloaded",
486even after their associated libraries have been loaded (and the
487autoloads have been redefined as functions).
488
6bc66c10 489** ImageMagick
cd996018 490
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491*** Images displayed via ImageMagick now support transparency and the
492:background image specification property.
cd996018 493
6bc66c10 494*** When available, ImageMagick support is automatically enabled.
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495It is no longer necessary to call `imagemagick-register-types'
496explicitly to install ImageMagick image types; that function is called
7d806bfe 497automatically at startup, or when customizing an imagemagick- option.
2f940384 498
c505aaeb 499*** Setting `imagemagick-types-inhibit' to t now disables the use of
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500ImageMagick to view images. (You must call `imagemagick-register-types'
501afterwards if you do not use customize to change this.)
2f940384 502
7afbaca4 503*** The new variable `imagemagick-enabled-types' also affects which
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504ImageMagick types are treated as images. The function
505`imagemagick-filter-types' returns the list of types that will be
506treated as images.
c505aaeb 507
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508** Minibuffer
509
510*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
511next and previous path separator, respectively.
c505aaeb 512
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513*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
514in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
515non-nil before enabling the mode.
516
517** Mode line
518
519*** New option `mode-line-default-help-echo' specifies the help text
520(shown in a tooltip or in the echo area) for any part of the mode line
521that does not have its own specialized help text.
522
523*** You can now click mouse-3 in the coding system indicator to invoke
524`set-buffer-file-coding-system'.
525
526** Server and client
2f940384 527
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528*** emacsclient now obeys string values for `initial-buffer-choice',
529if it is told to open a new frame without specifying any file to visit
530or expression to evaluate.
db80bdc8 531
f938eda9 532*** New option `server-auth-key' specifies a shared server key.
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533
534** Emacs now generates backtraces on fatal errors.
535On encountering a fatal error, Emacs now outputs a textual description
536of the fatal signal, and a short backtrace on platforms like glibc
5248293f 537that support backtraces.
2e2d2a13 538
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539** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
540This minor mode replaces `toggle-read-only', which is now obsolete.
541
542** Most `y-or-n' prompts now allow you to scroll the selected window.
543Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
544respectively, without exiting from the prompt.
545
546** In the Package Menu, newly-available packages are listed as "new",
547and sorted above the other "available" packages by default.
548
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549** If your Emacs was built from a bzr checkout, the new variable
550`emacs-bzr-version' contains information about the bzr revision used.
de6ff46d 551
6bc66c10 552** New option `create-lockfiles' specifies usage of lockfiles.
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553It defaults to t. Changing it to nil inhibits the creation of lock
554files (use this with caution).
dc0f75c8 555
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556** New option `enable-remote-dir-locals', if non-nil, allows directory-local
557variables on remote hosts.
21ffb35a 558
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559** The entry for PCL-CVS has been removed from the Tools menu.
560The PCL-CVS commands are still available via the keyboard.
561
6bc66c10
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562** Using "unibyte: t" in Lisp source files is obsolete.
563Use "coding: raw-text" instead.
564
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565** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
566has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
567The previous binding, introduced in Emacs 24.1, was a mistake, because
568`C-c LETTER' bindings are reserved for user customizations.
569
6bc66c10 570** Internationalization
2f940384 571
f938eda9 572*** New language environment: Persian.
2f940384 573
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574*** New input method `vietnamese-vni'.
575
6bc66c10 576** Nextstep (GNUstep / Mac OS X) port
2f940384 577
823b2fb6 578*** Support for fullscreen and the frame parameter fullscreen.
2f940384 579
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580*** A file dialog is used for open/save operations initiated from the
581menu/toolbar.
582
a1ed8b05 583\f
2a1e2476 584* Editing Changes in Emacs 24.3
c25df26e 585
6bc66c10 586** Search and Replace
d39d3c8e 587
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588*** Non-regexp Isearch now performs "lax" space matching.
589Each sequence of spaces in the supplied search string may match any
590sequence of one or more whitespace characters, as specified by the
591variable `search-whitespace-regexp'. (This variable is also used by a
823b2fb6 592similar existing feature for regexp Isearch.)
2f940384 593
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594*** New Isearch command `M-s SPC' toggles lax space matching.
595This applies to both ordinary and regexp Isearch.
2f940384 596
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597*** New option `replace-lax-whitespace'.
598If non-nil, `query-replace' uses flexible whitespace matching too.
599The default is nil.
2f940384 600
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601*** Global `M-s _' starts a symbol (identifier) incremental search,
602and `M-s _' in Isearch toggles symbol search mode.
603`M-s c' in Isearch toggles search case-sensitivity.
604
6bc66c10 605** Navigation commands
48de8b12 606
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607*** New binding `M-g c' for `goto-char'.
608
609*** New binding `M-g TAB' for `move-to-column'.
610
611*** `M-g TAB' (`move-to-column') prompts for a column number if called
612interactively with no prefix arg. Previously, it moved to column 1.
613
614** New option `yank-handled-properties' allows processing of text
615properties on yanked text, in ways that are more general than just
616removing them (as is done by `yank-excluded-properties').
48de8b12 617
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618** New option `delete-trailing-lines' specifies whether
619M-x delete-trailing-whitespace should delete trailing lines at the end
620of the buffer. It defaults to t.
621
f938eda9 622** `C-u M-=' now counts lines/words/characters in the entire buffer.
826b3235 623
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624** `C-x 8 RET' is now bound to `insert-char', which is now a command.
625`ucs-insert' is now an obsolete alias for `insert-char'.
b2459884 626
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627** The `z' key no longer has a binding in most special modes.
628It used to be bound to `kill-this-buffer', but `z' is too easy to
629accidentally type.
f938eda9 630
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631** New command `C-x r M-w' (`copy-rectangle-as-kill').
632It copies the region-rectangle as the last rectangle kill.
f938eda9 633
6bc66c10 634** Registers
f938eda9 635
823b2fb6 636*** `C-x r +' is now overloaded to invoke `append-to-register'.
f938eda9 637
f938eda9 638*** New option `register-separator' specifies the register containing
823b2fb6
GM
639the text to put between collected texts for use with
640M-x append-to-register and M-x prepend-to-register.
f1f4dba0 641
a1ed8b05 642\f
2a1e2476 643* Changes in Specialized Modes and Packages in Emacs 24.3
ae4969c2 644
6bc66c10 645** Common Lisp emulation (CL)
f938eda9 646
89660017 647*** CL's main entry is now (require 'cl-lib).
823b2fb6
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648`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
649i.e., all its definitions have the "cl-" prefix (and internal definitions
650use the "cl--" prefix).
7c1898a7 651
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652If `cl' provided a feature under the name `foo', then `cl-lib'
653provides it under the name `cl-foo' instead; with the exceptions of the
654few `cl' definitions that had to use `foo*' to avoid conflicts with
655pre-existing Elisp entities. These have been renamed to `cl-foo'
656rather than `cl-foo*'.
7c1898a7 657
92246540 658The old `cl' is now deprecated and is mainly just a bunch of aliases that
823b2fb6 659provide the old, non-prefixed names. Some exceptions are listed below:
7c1898a7 660
89660017
SM
661*** `cl-flet' is not like `flet' (which is deprecated).
662Instead it obeys the behavior of Common-Lisp's `flet'.
e8693c96
GM
663In particular, in cl-flet function definitions are lexically scoped,
664whereas in flet the scoping is dynamic.
89660017
SM
665
666*** `cl-labels' is slightly different from `labels'.
823b2fb6
GM
667The difference is that it relies on the `lexical-binding' machinery
668(as opposed to the `lexical-let' machinery used previously) to capture
669definitions in closures, so such closures will only work if `lexical-binding'
670is in use.
89660017 671
f94b04fc 672*** `cl-letf' is not exactly like `letf'.
4ddedf94
GM
673The only difference is in details that relate to some deprecated usage
674of `symbol-function' in place forms.
f94b04fc 675
89660017 676*** `progv' was rewritten to use the `let' machinery.
823b2fb6
GM
677A side effect is that variables without corresponding values are bound
678to nil rather than being made unbound.
89660017 679
9512f820
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680*** The following methods of extending `setf' are obsolete
681(use features from gv.el instead):
682`define-modify-macro' (use `gv-letplace')
031b2ea7
GM
683`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
684`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
2b4da3ff 685`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
f94b04fc 686
6bc66c10 687** Diff mode
f938eda9 688
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689*** Changes are now highlighted using the same color scheme as in
690modern VCSes. Deletions are displayed in red (new faces
691`diff-refine-removed' and `smerge-refined-removed', and new definition
692of `diff-removed'), insertions in green (new faces `diff-refine-added'
693and `smerge-refined-added', and new definition of `diff-added').
f938eda9 694
6bc66c10
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695*** The variable `diff-use-changed-face' defines whether to use the
696face `diff-changed', or `diff-removed' and `diff-added' to highlight
697changes in context diffs.
2f940384 698
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699*** The new command `diff-delete-trailing-whitespace' removes trailing
700whitespace introduced by a diff.
f938eda9 701
6bc66c10
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702** Ediff now uses the same color scheme as Diff mode.
703
704** Python mode
705
706A new version of python.el, which provides several new features, including:
707per-buffer shells, better indentation, Python 3 support, and improved
708shell-interaction compatible with iPython (and virtually any other
709text based shell).
710
711*** Some user options have been replaced/renamed, including (old -> new):
712**** python-indent -> python-indent-offset
713**** python-guess-indent -> python-indent-guess-indent-offset
714**** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
715**** python-use-skeletons -> python-skeleton-autoinsert
716
717*** Some user options have been removed, including:
718
719**** `python-indent-string-contents': Strings are never indented.
720
721**** `python-honour-comment-indentation':
d5b1b1aa 722Comments are always considered as indentation markers.
6bc66c10
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723
724**** `python-continuation-offset': Indentation is automatically
725calculated in a pep8 compliant way depending on the context.
726
727**** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
728Have no direct mapping as the shell interaction is completely different.
729
730**** `python-python-command', `python-jython-command':
731Replaced by `python-shell-interpreter'.
732
733**** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
734`python-pdbtrack-minor-mode-string', `python-source-modes':
735No longer relevant.
736
737*** Some commands have been replaced (old -> new):
738**** python-insert-class -> python-skeleton-class
739**** python-insert-def -> python-skeleton-def
740**** python-insert-for -> python-skeleton-for
741**** python-insert-if -> python-skeleton-if
742**** python-insert-try/except -> python-skeleton-try
743**** python-insert-try/finally -> python-skeleton-try
744**** python-insert-while -> python-skeleton-while
745**** python-find-function -> python-nav-jump-to-defun
746**** python-next-statement -> python-nav-forward-sentence
747**** python-previous-statement -> python-nav-backward-sentence
748**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
749**** python-end-of-defun-function -> python-nav-end-of-defun
750**** python-send-buffer -> python-shell-send-buffer
751**** python-send-defun -> python-shell-send-defun
752**** python-send-region -> python-shell-send-region
753**** python-send-region-and-go -> emulate with python-shell-send-region
754and python-shell-switch-to-shell
755**** python-send-string -> python-shell-send-string
756**** python-switch-to-python -> python-shell-switch-to-shell
757**** python-describe-symbol -> python-eldoc-at-point
e76f0800 758
f938eda9
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759** D-Bus
760
f938eda9
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761*** New variables `dbus-compiled-version' and `dbus-runtime-version'.
762
f938eda9
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763*** The D-Bus object manager interface is implemented.
764
f938eda9
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765*** Variables of type :(u)int32 and :(u)int64 accept floating points,
766if their value does not fit into Emacs's integer range.
767
823b2fb6
GM
768*** The function `dbus-call-method' is now non-blocking.
769It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
f938eda9 770
823b2fb6 771*** Signals can also be sent as unicast messages.
f938eda9 772
f938eda9 773*** The argument list of `dbus-register-signal' has been extended,
6bc66c10 774according to the new match rule types of D-Bus.
f938eda9 775
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776*** `dbus-init-bus' supports private connections.
777
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778*** There is a new function `dbus-setenv'.
779
6bc66c10
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780** `desktop-path' no longer includes the "." directory.
781Desktop files are now located in ~/.emacs.d by default.
f938eda9
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782
783** Dired
2f940384 784
f938eda9
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785*** `dired-do-async-shell-command' executes each file sequentially
786if the command ends in `;' (when operating on multiple files).
787Otherwise, it executes the command on each file in parallel.
2f940384 788
823b2fb6
GM
789*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
790`dired-do-chown', and `dired-do-touch' yanks the attributes of the
f938eda9 791file at point.
2f940384 792
f938eda9 793*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
823b2fb6 794`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
f938eda9 795mark/unmark/flag all files in the active region.
2f940384 796
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797*** The minibuffer default for `=' (`dired-diff) has changed.
798It is now the backup file for the file at point, if one exists.
799In Transient Mark mode the default is the file at the active mark.
2f940384 800
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801*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
802The global binding for `M-=', `count-words-region' is in effect.
803
02969baf
GM
804** ERC
805
6e5e9b70
GM
806*** New module "notifications", which can send a notification when you
807receive a private message or your nickname is mentioned.
02969baf
GM
808
809*** ERC will look up server/channel names via auth-source and use any
810channel keys found.
f938eda9 811
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GM
812*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
813only applies to messages sent by lurkers.
f925b109 814
6bc66c10 815** reStructuredText mode
f938eda9 816
6bc66c10
GM
817*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
818fontification, comment handling, and customization have all been revised
819and improved.
f938eda9 820
6bc66c10 821*** Support for `imenu' and `which-function-mode'.
f938eda9 822
6bc66c10
GM
823*** The reStructuredText syntax is more closely covered.
824Sphinx support has been improved.
f938eda9 825
6bc66c10 826*** `rst-insert-list' inserts new list or continues existing lists.
f938eda9 827
6bc66c10 828*** A negative prefix argument always works for `rst-adjust'.
f938eda9 829
6bc66c10 830*** The window configuration is reset after displaying a TOC.
bc7be45d 831
6bc66c10 832*** The constant `rst-version' describes the rst.el package version.
358c19d9 833
dba3cda3
GM
834** Ruby mode
835
836*** Support for percent literals and recognition of regular expressions
837in method calls without parentheses with more methods, including Cucumber
838steps definitions.
839
840*** Improved syntax highlighting and indentation.
841
842*** New command `ruby-toggle-block', bound to `C-c {'.
843
844*** Some non-standard keybindings/commands have been removed:
845
846**** `ruby-electric-brace'; use `electric-indent-mode' instead.
847
848**** `ruby-mark-defun'; use `mark-defun'.
849
850**** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
851appropriate settings for the variables `beginning-of-defun-function'
852and `end-of-defun-function'.
853
854**** Non-standard keybindings for `backward-kill-word', `comment-region',
855`reindent-then-newline-and-indent' and `newline' have been removed.
856
6bc66c10 857** Shell Script mode
40d8bcb8 858
6bc66c10 859*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
40d8bcb8 860
6bc66c10 861*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
40d8bcb8 862
6bc66c10 863*** `sh-use-smie' lets you choose a new indentation and navigation code.
40d8bcb8 864
6bc66c10 865** VHDL mode
40d8bcb8 866
6bc66c10 867*** The free software compiler GHDL is supported (and now the default).
40d8bcb8 868
6bc66c10 869*** Support for the VHDL-AMS packages has been added/updated.
40d8bcb8 870
6bc66c10 871*** Updated to the 2002 revision of the VHDL standard.
40d8bcb8 872
6bc66c10 873*** Accepts \r and \f as whitespace.
40d8bcb8 874
6bc66c10 875** Apropos
40d8bcb8 876
6bc66c10
GM
877*** The faces used by Apropos are now directly customizable.
878These faces are named `apropos-symbol', `apropos-keybinding', and so on;
879see the `apropos' Custom group for details.
d13c8be6 880
6bc66c10
GM
881*** The old options whose values specified faces to use have been removed
882(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
d13c8be6 883
6bc66c10 884** Buffer Menu
d13c8be6 885
6bc66c10 886*** This package has been rewritten to use Tabulated List mode.
d13c8be6 887
6bc66c10
GM
888*** Option `Buffer-menu-buffer+size-width' is now obsolete.
889Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
d13c8be6 890
86e100a6
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891** Calc
892
893*** Algebraic simplification mode is now the default.
894To restrict to the limited simplifications given by the former
895default simplification mode, use `m I'.
896
6bc66c10 897** Calendar
d13c8be6 898
6bc66c10
GM
899*** You can customize the header text that appears above each calendar month.
900See the variable `calendar-month-header'.
d13c8be6 901
6bc66c10 902*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
ee97deee 903
6bc66c10
GM
904*** The calendars produced by cal-html include holidays.
905Customize `cal-html-holidays' to change this.
8b0823d6 906
0058cae2
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907** CEDET
908
909*** The major modes from the parser generators "Bovine" and "Wisent"
910are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
911are in `auto-mode-alist', and the corresponding manuals are included.
912
913*** EDE
914
915**** Menu support for the "Configuration" feature. This allows users to
916choose the active configuration (such as debug or install) from the menu.
917
918**** New command `ede-set' to interactively set project-local variables.
919
920**** Support for compiling, debugging, and running in "generic" projects.
921
922**** Autoconf editing support for M4 macros with complex arguments.
923
924**** Compilation support for the "linux" project type.
925
926**** "simple" projects have been removed; use "generic" projects instead.
927
928*** Semantic
929
930**** Support for parsing #include statements inside a namespace in C/C++.
931
932**** Improved support for 'extern "C"' declarations in C/C++.
933
934**** The ability to ignore more common special C/C++ preprocessor symbols,
935such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
936If available, include cdefs.h as an additional source of preprocessor symbols.
937
938**** Improved C/C++ function pointer parsing.
939
940**** In Python, support for converting imports to include file names.
941
942**** Ability to dynamically determine the Python load path.
943
944**** Support for the Python 'WITH' and 'AT' keywords.
945
946**** Improved tooltip completion.
947
948*** SRecode
949
950**** The SRecode manual is now included.
951
952**** Tag generation supports constructor/destructor settings and system
953include differentiation.
954
955**** Addition of 'Framework' support: Frameworks are specified when a
956particular kind of library (such as Android) is needed in a common language
957mode (like Java).
958
959**** Support for nested templates and let variables override based on priority.
960
961**** Support for merging tables from multiple related modes, such as
962default -> c++ -> arduino.
963
6bc66c10 964** Compile has a new option `compilation-always-kill'.
42917e79 965
6bc66c10 966** Customize
35d98877 967
6bc66c10 968*** `custom-reset-button-menu' now defaults to t.
35d98877 969
6bc66c10
GM
970*** Non-option variables are never matched in `customize-apropos' and
971`customize-apropos-options' (i.e., the prefix argument does nothing for
972these commands now).
782fbf2a 973
f938eda9 974** Term
782fbf2a 975
823b2fb6
GM
976*** The variables `term-default-fg-color' and `term-default-bg-color'
977are now deprecated in favor of the customizable face `term'.
fc72b15c 978
02969baf
GM
979*** You can customize how to display ANSI terminal colors and styles
980by customizing the corresponding `term-color-<COLOR>',
981`term-color-underline' and `term-color-bold' faces.
cf20dee0 982
05ecb497 983** Tramp
2f940384 984
02969baf 985*** The syntax has been extended in order to allow ad-hoc proxy definitions.
05ecb497 986
823b2fb6 987*** Remote processes are now also supported on remote MS-Windows hosts.
05ecb497 988
ce7b18ec 989** URL
2f940384 990
ce7b18ec
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991*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
992Previously, this slot stored semicolon-separated attribute-value pairs
993appended to some imap URLs, but this is not compatible with RFC 3986.
823b2fb6 994So now the `filename' slot stores the entire path and query components,
ce7b18ec 995and the `attributes' slot is always nil.
2f940384 996
ce7b18ec
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997*** New function `url-encode-url' for encoding a URI string.
998The `url-retrieve' function now uses this to encode its URL argument,
999in case that is not properly encoded.
1000
6bc66c10
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1001** notifications.el supports now version 1.2 of the Notifications API.
1002The function `notifications-get-capabilities' returns the supported
1003server properties.
f938eda9 1004
6bc66c10
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1005** Flymake uses fringe bitmaps to indicate errors and warnings.
1006See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1007`flymake-warning-bitmap'.
f938eda9 1008
6bc66c10
GM
1009** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1010specifying URL types that should be converted to remote file names at
1011the FFAP prompt. The default is now '("ftp").
f938eda9 1012
6bc66c10
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1013** New Ibuffer `derived-mode' filter, bound to `/ M'.
1014The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
f938eda9 1015
6bc66c10
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1016** New option `mouse-avoidance-banish-position' specifies where the
1017`banish' mouse avoidance setting moves the mouse.
ce7b18ec 1018
6bc66c10
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1019** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1020closing brackets to be aligned with the line of the opening bracket.
f938eda9 1021
6bc66c10 1022** In Proced mode, new command `proced-renice' renices marked processes.
f938eda9 1023
6bc66c10
GM
1024** New option `async-shell-command-buffer' specifies the buffer to use
1025for a new asynchronous `shell-command' when the default output buffer
1026`*Async Shell Command*' is already in use.
f938eda9 1027
6bc66c10
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1028** SQL mode has a new option `sql-db2-escape-newlines'.
1029If non-nil, newlines sent to the command interpreter will be escaped
1030by a backslash. The default does not escape the newlines and assumes
1031that the sql statement will be terminated by a semicolon.
f938eda9 1032
6bc66c10
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1033** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1034(and modes that derive from it), sorts the column at point, or the Nth
1035column if a numeric prefix argument is given.
f938eda9 1036
02969baf 1037** `which-func-modes' now defaults to t, so Which Function mode, when
05b621a6 1038enabled, applies to all applicable major modes.
f938eda9 1039
6bc66c10 1040** `winner-mode-hook' now runs when the mode is disabled, as well as when
823b2fb6 1041it is enabled.
f938eda9 1042
6bc66c10
GM
1043** Follow mode no longer works by using advice.
1044The option `follow-intercept-processes' has been removed.
1045
1046** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
f938eda9 1047
d1069532
SM
1048** Hooks renamed to avoid obsolete "-hooks" suffix:
1049*** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1050*** semantic-change-hooks -> semantic-change-functions
1051*** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1052*** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1053*** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1054*** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1055*** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1056*** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1057*** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1058*** rcirc-activity-hooks -> rcirc-activity-functions
1059*** rcirc-print-hooks -> rcirc-print-functions
1060*** dbus-event-error-hooks -> dbus-event-error-functions
1061*** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1062*** checkdoc-style-hooks -> checkdoc-style-functions
1063*** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1064*** archive-extract-hooks -> archive-extract-hook
1065*** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1066*** hfy-post-html-hooks -> hfy-post-html-hook
1067*** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1068*** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1069*** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1070*** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
f938eda9 1071
6bc66c10 1072** Obsolete packages
2f940384 1073
797e6e88
SM
1074*** assoc.el
1075In most cases, assoc+member+push+delq work just as well.
1076And in any case it's just a terrible package: ugly semantics, terrible
1077inefficiency, and not namespace-clean.
3c74813a 1078*** bruce.el
b4617547 1079*** cust-print.el
daed4003 1080*** ledit.el
82f289a4 1081*** mailpost.el
d57de7fe 1082*** mouse-sel.el
3c74813a 1083*** patcomp.el
1a9c6830 1084
a1ed8b05 1085\f
2a1e2476 1086* Incompatible Lisp Changes in Emacs 24.3
b4d3bc10 1087
6bc66c10
GM
1088** Docstrings starting with `*' no longer indicate user options.
1089Only variables defined using `defcustom' are considered user options.
1090The function `user-variable-p' is now an obsolete alias for
1091`custom-variable-p'.
090cf9db 1092
6bc66c10
GM
1093** The return values of `defalias', `defun' and `defmacro' have changed,
1094and are now undefined. For backwards compatibility, `defun' and
1095`defmacro' currently return the name of the newly defined
1096function/macro, but this should not be relied upon.
090cf9db 1097
823b2fb6
GM
1098** `random' by default now returns a different random sequence in
1099every Emacs run. Use `(random S)', where S is a string, to set the
0e23ef9d
PE
1100random seed to a value based on S, in order to get a repeatable
1101sequence in later calls.
1102
d32e47af
LM
1103** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1104that substring is inserted literally even if the LITERAL arg is
1105non-nil, instead of causing an error to be signaled.
1106
2cec368c
MR
1107** `select-window' now always makes the window's buffer current.
1108It does so even if the window was selected before.
1109
6bc66c10
GM
1110** The function `x-select-font' can return a font spec, instead of a
1111font name as a string. Whether it returns a font spec or a font name
1112depends on the graphical library.
bbf908bc 1113
eeddc531
CY
1114** `face-spec-set' no longer sets frame-specific attributes when the
1115third argument is a frame (that usage was obsolete since Emacs 22.2).
1116
6bc66c10 1117** `set-buffer-multibyte' now signals an error in narrowed buffers.
a59d531e 1118
ab7f1c43
GM
1119** The CL package's `get-setf-method' function no longer exists.
1120Generalized variables are now part of core Emacs Lisp, and implemented
1121differently to the way cl.el used to do it. It is not possible to
1122define a compatible replacement for `get-setf-method'. See the file
1123gv.el for internal details of the new implementation.
1124
6bc66c10
GM
1125** The arguments of `dbus-register-signal' are no longer just strings,
1126but keywords or keyword-string pairs. The old argument list will
1127still be supported for Emacs 24.x.
72b255c7 1128
6bc66c10 1129** Miscellaneous name changes
823b2fb6
GM
1130Some Lisp symbols have been renamed to correct their spelling,
1131or to be more consistent with standard Emacs terminology.
72b255c7 1132
72b255c7 1133*** Renamed functions
72b255c7
PE
1134**** hangul-input-method-inactivate -> hangul-input-method-deactivate
1135**** inactivate-input-method -> deactivate-input-method
1136**** quail-inactivate -> quail-deactivate
1137**** robin-inactivate -> robin-deactivate
1138**** viper-inactivate-input-method -> viper-deactivate-input-method
1139**** viper-inactivate-input-method-action ->
1140 viper-deactivate-input-method-action
1141**** ucs-input-inactivate -> ucs-input-deactivate
1142
1143*** Renamed hooks
1144The old hooks are still supported for backward compatibility, but they
1145are deprecated and will be removed eventually.
72b255c7
PE
1146**** input-method-inactivate-hook -> input-method-deactivate-hook
1147**** robin-inactivate-hook -> robin-deactivate-hook
1148**** quail-inactivate-hook -> quail-deactivate-hook
1149
6bc66c10 1150*** Renamed variables
72b255c7
PE
1151**** follow-deactive-menu -> follow-inactive-menu
1152**** inactivate-current-input-method-function ->
1153 deactivate-current-input-method-function
1154
02969baf
GM
1155** Some obsolete functions, variables, and faces have been removed:
1156*** `last-input-char', `last-command-char', `unread-command-char'
78f3273a
CY
1157*** `facemenu-unlisted-faces'
1158*** `rmail-decode-mime-charset'
a5f2b6ec
CY
1159*** `iswitchb-read-buffer'
1160*** `sc-version', `sc-submit-bug-report'
1161*** `set-char-table-default'
02969baf 1162*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
a5f2b6ec 1163*** `compile-internal'
02969baf 1164*** `modeline'
59f7af81 1165*** `mode-line-inverse-video'
02969baf 1166*** `follow-mode-off-hook'
a5f2b6ec 1167*** `cvs-commit-buffer-require-final-newline'
63820c5c 1168(use `log-edit-require-final-newline' instead)
a5f2b6ec
CY
1169*** `cvs-changelog-full-paragraphs'
1170(use `log-edit-changelog-full-paragraphs' instead)
1171*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1172*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1173*** `vc-master-templates' (use `vc-handled-backends' instead)
1174*** `vc-checkout-carefully'
78f3273a 1175
a1ed8b05 1176\f
93e0bed6 1177* Lisp Changes in Emacs 24.3
ef24141c 1178
2ee3d7f0 1179** CL-style generalized variables are now in core Elisp.
f938eda9 1180`setf' is autoloaded; `push' and `pop' accept generalized variables.
ebdbfb95
GM
1181You can define your own generalized variables using `gv-define-simple-setter',
1182`gv-define-setter', etc.
2ee3d7f0 1183
6bc66c10
GM
1184** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1185This can significantly speed up execution of non-byte-compiled code,
1186but can also bump into previously unnoticed cyclic dependencies.
1187These are generally harmless: they will simply cause the macro calls
1188to be left for later expansion (as before), but will result in a
1189warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1190You may wish to restructure your code so this does not happen.
1191
1192** New sampling-based Elisp profiler.
1193Try M-x profiler-start, do some work, and then call M-x profiler-report.
1194When finished, use M-x profiler-stop. The sampling rate can be based on
1195CPU time or memory allocations.
1196
500fcedc
SM
1197** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1198The interpretation of the DECLS is determined by `defun-declarations-alist'.
1199
6bc66c10
GM
1200** New macros `setq-local' and `defvar-local'.
1201
1202** Face underlining can now use a wave.
2f940384 1203
6bc66c10 1204** `read-regexp' has a new argument HISTORY; the first argument PROMPT
cd996018 1205of `read-regexp' accepts a string ending with a colon and space, and its
823b2fb6 1206second argument DEFAULTS can be a list of strings accessible via `M-n'
cd996018
CY
1207in the minibuffer ahead of other hard-coded useful regexp-related values.
1208More commands use `read-regexp' now to read their regexp arguments.
1209
f938eda9 1210** Completion
500fcedc 1211
f938eda9
CY
1212*** New function `completion-table-with-quoting' to handle completion
1213in the presence of quoting, such as file completion in shell buffers.
f95e9344 1214
f938eda9
CY
1215*** New function `completion-table-subvert' to use an existing completion
1216table, but with a different prefix.
1217
6bc66c10 1218** Debugger
f95e9344 1219
f938eda9
CY
1220*** New error type and new function `user-error'.
1221These do not trigger the debugger.
f95e9344 1222
57fc0fee
GM
1223*** New option `debugger-bury-or-kill', saying what to do with the
1224debugger buffer when exiting debug.
45b82ad0
SM
1225
1226*** Set `debug-on-message' to enter the debugger when a certain
1227message is displayed in the echo area. This can be useful when trying
1228to work out which code is doing something.
2f940384 1229
45b82ad0
SM
1230*** New var `inhibit-debugger', automatically set to prevent accidental
1231recursive invocations.
fa2bcf43 1232
6bc66c10 1233** Window handling
2f940384 1234
6bc66c10
GM
1235*** New command `fit-frame-to-buffer' adjusts the frame height to
1236fit the contents.
2f940384 1237
6bc66c10
GM
1238*** The command `fit-window-to-buffer' can adjust the frame height
1239if the new option `fit-frame-to-buffer' is non-nil.
8e17c9ba 1240
7fe37cfc
GM
1241*** New macro `with-temp-buffer-window', similar to
1242`with-output-to-temp-buffer'.
fa2bcf43 1243
8e17c9ba
MR
1244*** `temp-buffer-resize-mode' no longer resizes windows that have been
1245reused.
c5e28e39 1246
823b2fb6 1247*** New option `switch-to-buffer-preserve-window-point' to restore a
43bcfda6 1248window's point when switching buffers.
7c82753d 1249
6bc66c10
GM
1250*** New display action alist entries `window-height' and `window-width'
1251specify the size of new windows created by `display-buffer'.
1252
1253*** New display action alist entry `pop-up-frame-parameters', if
1254non-nil, specifies frame parameters to give any newly-created frame.
7c82753d 1255
fa2bcf43
MR
1256*** New display action alist entry `inhibit-switch-frame', if non-nil,
1257tells display action functions to avoid changing which frame is
1258selected.
2f940384 1259
fa2bcf43
MR
1260*** New display action alist entry `previous-window', if non-nil,
1261specifies window to reuse in `display-buffer-in-previous-window'.
2f940384 1262
6bc66c10
GM
1263*** New display action functions `display-buffer-below-selected',
1264and `display-buffer-in-previous-window'.
1265
1266*** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1267now accept a third argument to avoid choosing the selected window.
1268
1269*** Additional values recognized for option `window-combination-limit'.
5938d519 1270
77f1f99c
CY
1271*** The following variables are obsolete, as they can be replaced by
1272appropriate entries in the `display-buffer-alist' function introduced
1273in Emacs 24.1:
823b2fb6 1274**** `dired-shrink-to-fit'
77f1f99c 1275**** `display-buffer-reuse-frames'
823b2fb6 1276**** `display-buffer-function'
77f1f99c 1277**** `special-display-buffer-names'
823b2fb6 1278**** `special-display-frame-alist'
77f1f99c 1279**** `special-display-function'
823b2fb6 1280**** `special-display-regexps'
77f1f99c 1281
ab0fa4e4 1282** Time
2f940384 1283
ab0fa4e4
PE
1284*** `current-time-string' no longer requires that its argument's year
1285must be in the range 1000..9999. It now works with any year supported
1286by the underlying C implementation.
2f940384 1287
f938eda9
CY
1288*** `current-time' now returns extended-format time stamps
1289(HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1290PSEC is typically a multiple of 1000 on current machines. Other
823b2fb6
GM
1291functions that use this format, such as `file-attributes' and
1292`format-time-string', have been changed accordingly. Old-format time
f938eda9 1293stamps are still accepted.
2f940384 1294
823b2fb6 1295*** The format of timers in `timer-list' and `timer-idle-list' is now
f938eda9
CY
1296[TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1297The PSECS slot is new, and uses picosecond resolution. It can be
823b2fb6 1298accessed via the new `timer--psecs' accessor.
2f940384 1299
c4132fd4
PE
1300*** Last-modified time stamps in undo lists now are of the form
1301(t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1302
0058cae2
GM
1303** EIEIO
1304
1305*** Improved security when handling persistent objects:
1306
1307**** `eieio-persistent-read' now features optional arguments for specifying
1308the class to load, as well as a flag stating whether subclasses are allowed;
1309if provided, other classes will be rejected by the reader. For
1310compatibility with existing code, if the class is omitted only a
1311warning is issued.
1312
1313**** New specialized reader for pulling in classes and signaling errors
1314without evaluation of suspicious code.
1315
1316**** All slots that contain objects must have a :type. Slots with lists
1317of objects must use a new type predicate for a list of an object type.
1318
1319*** Support for `find-function' and similar utilities, through the addition
1320of filename support to generated symbols.
1321
f938eda9 1322** Floating point functions now always return special values like NaN,
823b2fb6 1323instead of signaling errors, if given invalid args; e.g., (log -1.0).
f938eda9
CY
1324Previously, they returned NaNs on some platforms but signaled errors
1325on others. The affected functions are acos, asin, tan, exp, expt,
1326log, log10, sqrt, and mod.
1327
6bc66c10 1328** New fringe bitmap `exclamation-mark'.
f938eda9 1329
6bc66c10
GM
1330** Miscellaneous changes to special forms and macros
1331
1332*** `defun' and `defmacro' are now macros rather than special forms.
1333
1334*** `kbd' is now a function rather than a macro.
1335
1336** Miscellaneous new functions
1337
1338*** `set-temporary-overlay-map' sets up a temporary keymap that
1339takes precedence over most other maps for a short while (normally one key).
f938eda9 1340
847a0561 1341*** `autoloadp' tests if its argument is an autoloaded object.
2f940384 1342
847a0561 1343*** `autoload-do-load' performs the autoloading operation.
2f940384 1344
f938eda9 1345*** `buffer-narrowed-p' tests if the buffer is narrowed.
2f940384 1346
f938eda9 1347*** `file-name-base' returns a file name sans directory and extension.
2f940384 1348
f938eda9 1349*** `function-get' fetches a function property, following aliases.
c990426a 1350
f938eda9 1351*** `posnp' tests if an object is a `posn'.
f938eda9 1352
f938eda9 1353*** `system-users' returns the user names on the system.
547d6865 1354
f938eda9 1355*** `system-groups' returns the group names on the system.
f938eda9 1356
f938eda9 1357*** `tty-top-frame' returns the topmost frame of a text terminal.
c990426a 1358
f938eda9 1359** The following functions and variables are obsolete:
847a0561 1360*** `automount-dir-prefix' (use `directory-abbrev-alist')
f938eda9 1361*** `buffer-has-markers-at'
1a9c6830 1362*** `macro-declaration-function' (use `macro-declarations-alist')
847a0561 1363*** `window-system-version' (provides no useful information)
93cacb6d 1364*** `dired-pop-to-buffer' (use `dired-mark-pop-up')
0e2ae83d 1365*** `query-replace-interactive'
49238e7f 1366*** `font-list-limit' (has had no effect since Emacs < 23)
86aa551c 1367
adce950d 1368\f
93e0bed6 1369* Changes in Emacs 24.3 on Non-Free Operating Systems
9078ead6 1370
4e98ad15 1371** Cygwin builds can use the native MS Windows user interface.
823b2fb6 1372Pass `--with-w32' to configure. The default remains the X11 interface.
53a63be6 1373
1a9c6830 1374** Two new functions are available in Cygwin builds:
6e9f7997
DC
1375`cygwin-convert-file-name-from-windows' and
1376`cygwin-convert-file-name-to-windows'. These functions allow Lisp
1377code to access the Cygwin file-name mapping machinery to convert
1378between Cygwin and Windows-native file and directory names.
de6e3a60 1379
4e98ad15 1380** When invoked with the -nw switch to run on the Windows text-mode terminal,
1ab0c851 1381Emacs now supports `mouse-highlight', help-echo (in the echo area), and
4e98ad15
GM
1382`mouse-autoselect-window'.
1383
1a9c6830 1384** On MS Windows Vista and later Emacs now supports symbolic links.
4e98ad15 1385
823b2fb6 1386** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
4e98ad15
GM
1387support for libxml2, even if its presence is detected.
1388
4e98ad15
GM
1389** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1390
823b2fb6 1391** On Mac OS X, configure no longer automatically adds the Fink "/sw"
4e98ad15
GM
1392directories to the search path. You must add them yourself if you want them.
1393
2a1e2476
GM
1394\f
1395* Changes in Emacs 24.2
1396
5190da91 1397** This is mainly a bug-fix release.
6dad7178 1398
9078ead6 1399\f
eb199145 1400* Installation Changes in Emacs 24.1
09e18d03 1401
31fd3586
GM
1402** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1403to configure. Note that other libraries used by Emacs, RSVG and GConf,
1404also depend on Gtk+. You can disable them with --without-rsvg and
1405--without-gconf.
338648ad 1406
31fd3586
GM
1407** Emacs can be compiled with GnuTLS support.
1408This happens by default if a suitably recent version of the library is
1409found at build time. To prevent this, use the configure option
1410`--without-gnutls'. See below for GnuTLS features.
338648ad 1411
31fd3586
GM
1412** Emacs can be compiled with SELinux support.
1413This happens by default if a suitably recent version of the library is
1414found at build time. To prevent this, use the configure option
1415`--without-selinux'. See below for SELinux features.
aded53ff 1416
31fd3586
GM
1417** Emacs can be compiled with ImageMagick support.
1418This happens by default if a suitably recent version of the library is
1419found at build time. To prevent this, use the configure option
1420`--without-imagemagick'. See below for ImageMagick features.
c1f10868 1421This feature is not available for the Nextstep or MS ports.
d9170db5 1422
043efd56
GM
1423** Emacs can be compiled with libxml2 support.
1424This happens by default if a suitably recent version of the library is
1425found at build time. To prevent this, use the configure option
1426`--without-xml2'. See below for libxml2 features.
1427
7d301ae6
CY
1428** By default, the installed Info and man pages are compressed.
1429You can disable this by configuring --without-compress-info.
1430
7d301ae6 1431** New configure option --with-wide-int.
81eafe29 1432With it, Emacs integers typically have 62 bits, even on 32-bit machines.
0a768890
PE
1433On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1434to about 2 GiB.
81eafe29 1435
7d301ae6 1436** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
31fd3586
GM
1437These provide no new functionality, they just remove the need to edit
1438lib-src/Makefile by hand in order to use the associated features.
1439
7d301ae6 1440** New configure option --enable-use-lisp-union-type.
31fd3586
GM
1441This is only useful for Emacs developers to debug certain types of bugs.
1442This is not a new feature; only the configure flag is new.
041d709f
CY
1443
1444** The standalone programs digest-doc and sorted-doc are removed.
1445Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1446
041d709f
CY
1447** The standalone program `fakemail' is removed.
1448If you need it, feedmail.el provides a superset of the functionality.
1449
0bfd685e 1450\f
eb199145 1451* Startup Changes in Emacs 24.1
4a263588 1452
198a7a97 1453** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
adbf62ff
GM
1454command line arguments, and the EMACS_UNIBYTE environment variable, no
1455longer have any effect. (They were declared obsolete in Emacs 23.)
198a7a97 1456
66b7b0fe 1457** New command line option `--no-site-lisp' removes site-lisp directories
1b5e5b0c
GM
1458from load-path. -Q now implies this. This option does not affect the
1459EMACSLOADPATH environment variable (and hence has no effect for
c8d59ba3 1460Nextstep builds).
66b7b0fe 1461
0bfd685e 1462\f
eb199145 1463* Changes in Emacs 24.1
7841339b 1464
a2a25d24 1465** Completion
fdeb32ec 1466
dfdb4cad
CY
1467*** Many packages now use the `completion-at-point' command,
1468rather than implementing separate completion commands.
1469
de0bde62 1470*** `completion-at-point' now handles tags and semantic completion.
dfdb4cad 1471
a2a25d24
SM
1472*** Completion in a non-minibuffer now tries to detect the end of completion
1473and pops down the *Completions* buffer accordingly.
dfdb4cad
CY
1474
1475*** New option `completion-cycle-threshold' allows completion cycling.
1476
1477*** New option `completion-category-overrides' for overriding the
2c719188 1478default completion style in certain circumstances.
dfdb4cad 1479
a2a25d24 1480*** New completion style `substring'.
dfdb4cad
CY
1481
1482*** Completion of buffer names uses `substring' completion by default.
1483
1484*** The option `widget-complete-field' has been removed.
620c53a6 1485
6870aaef 1486** Mail changes
dfdb4cad 1487
7d301ae6
CY
1488*** The first time you try sending mail, Emacs asks for a mail method.
1489This is implemented by a new default for `send-mail-function', which
1490is `sendmail-query-once'. This offers to use the smtpmail package, or
1491to use the old defaults relying on external mail facilities
1492(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1493`mailclient-send-it' on Windows).
dfdb4cad 1494
e78e7e48
CY
1495*** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
1496transfers the report to your desktop's preferred mail client, if there
1497is one. This uses either the "xdg-email" utility, or Mac OS's "open"
1498command.
dfdb4cad 1499
7d301ae6
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1500*** See Changes in Specialized Modes and Packages for SMTPmail changes
1501and Mail mode changes
3f88cd72 1502
041d709f 1503** Emacs server and client changes
dfdb4cad 1504
7d301ae6 1505*** New option `server-port' specifies the port for TCP Emacs servers.
dfdb4cad 1506
041d709f 1507*** New emacsclient argument -q/--quiet suppresses some status messages.
dfdb4cad 1508
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1509*** New emacsclient argument --frame-parameters specifies the frame
1510parameters of any newly-created graphical frame.
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1511
1512*** If emacsclient shuts down due to Emacs signaling an error,
1513its exit status is 1.
1514
041d709f
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1515*** New emacsclient argument --parent-id ID.
1516This opens a client frame in parent X window ID, via XEmbed, similar
1517to the --parent-id argument to Emacs.
1518
d0ce9f8c
MB
1519** Internationalization changes
1520
d0ce9f8c 1521*** Emacs now supports display and editing of bidirectional text.
7d301ae6
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1522Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1523displayed in the correct visual order as expected by users of those
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1524scripts. The display reordering is a "full bidirectionality" class
1525implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1526with no RTL text should look exactly the same as before.
f4b6ba46 1527
041d709f 1528**** New buffer-local variable `bidi-display-reordering'.
7d301ae6 1529To disable display reordering in a buffer, change this to nil.
d20e1419 1530
041d709f
CY
1531**** New buffer-local variable `bidi-paragraph-direction'.
1532If nil (the default), Emacs determines the base direction of each
dfdb4cad
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1533paragraph from its text, as specified by the UBA. Setting the value
1534to `right-to-left' or `left-to-right' forces a base direction on each
1535paragraph.
f4b6ba46 1536
7d301ae6
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1537Paragraphs with right-to-left base direction are displayed starting at
1538the right window edge.
f1816485 1539
dfdb4cad
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1540*** Enhanced support for characters with no glyphs in available fonts,
1541or, on text terminals, characters that cannot be encoded by the
1542terminal coding system. The new option `glyphless-char-display-control'
1543specifies how to display them: as a hexadecimal code in a box, a thin
15441-pixel space, an empty box, etc.
d0ce9f8c 1545
9702b7a1
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1546*** New input methods for Farsi and Bulgarian
1547(farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
041d709f 1548
939db9ac
CY
1549*** `nobreak-char-display' now also highlights Unicode hyphen chars
1550(U+2010 and U+2011).
1551
7d301ae6 1552*** New Hebrew translation of the Emacs Tutorial.
31fd3586
GM
1553Type `C-u C-h t' to choose it in case your language setup doesn't
1554automatically select it.
1555
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1556** An Emacs Lisp package manager is now included.
1557This is a convenient way to download and install additional packages,
1558from a package repository at http://elpa.gnu.org.
dfdb4cad 1559
7d301ae6
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1560*** M-x list-packages shows a list of packages, which can be
1561selected for installation.
dfdb4cad 1562
7d301ae6 1563*** New command `describe-package', bound to `C-h P'.
dfdb4cad 1564
7d301ae6
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1565*** By default, all installed packages are loaded automatically when
1566Emacs starts up. To disable this, set `package-enable-at-startup' to
1567nil. To specify the packages to load, customize `package-load-list'.
16a91140 1568
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1569** Custom theme changes
1570
7d301ae6
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1571*** New command `M-x customize-themes', which provides a convenient
1572interface for enabling and disabling Custom themes.
dfdb4cad 1573
7d301ae6 1574*** New option `custom-theme-load-path' is the load path for themes.
dfdb4cad
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1575Emacs no longer looks for Custom themes in `load-path'. The default
1576value of `custom-theme-load-path' says to look for themes in
1577`custom-theme-directory', followed by a subdirectory of
1578`data-directory' named "themes/", which contains a small selection of
1579built-in Custom themes.
1580
7d301ae6
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1581*** New option `custom-safe-themes' records known-safe theme files.
1582If a theme is not in this list, Emacs queries before loading it, and
1583offers to save the theme to `custom-safe-themes' automatically. By
1584default, all themes included in Emacs are treated as safe.
b7d65a5f 1585
7d301ae6 1586** Improved GTK integration
dfdb4cad 1587
7d301ae6 1588*** GTK scroll-bars are now placed on the right by default.
dfdb4cad
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1589The function `set-scroll-bar-mode' can change this.
1590
7d301ae6 1591*** GTK tool bars can have just text, just images or images and text.
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1592Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1593the default is taken from desktop settings.
1594
1595*** GTK tool bars can be placed on any edge of the frame.
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1596The frame-parameter tool-bar-position controls this. It takes the
1597values top, left, right or bottom. The Options => Show/Hide menu has
1598entries for this.
dfdb4cad 1599
7d301ae6
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1600*** The default colors for selected text (the `region' face) are taken
1601from the GTK theme when Emacs is built with GTK.
dfdb4cad 1602
7d301ae6
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1603*** Emacs uses GTK tooltips by default if built with GTK.
1604You can disable this by changing `x-gtk-use-system-tooltips' to nil.
a5bee597 1605
dfdb4cad
CY
1606** Graphical interface changes
1607
1608*** On graphical displays, the mode-line no longer ends in dashes.
1609Also, the first dash (which does not indicate anything) is just
1610displayed as a space.
1611
1612*** `menu-bar-select-buffer-function' lets you choose another operation
1613instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1614
1615*** Lucid menus and dialogs can display antialiased fonts if Emacs is
1616built with Xft. These fonts can be set via X resources, for example:
1617Emacs.pane.menubar.font: Courier-12
1618
7d301ae6 1619** Exiting changes
dfdb4cad 1620
7d301ae6 1621*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
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1622or if it receives a SIGINT signal in batch mode.
1623
7d301ae6
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1624*** `kill-emacs-hook' is now also run in batch mode.
1625Third-party code which adds to `kill-emacs-hook' should check if they
1626do the right thing in batch mode.
9c524fcb 1627
041d709f 1628** Scrolling changes
dfdb4cad 1629
041d709f 1630*** New scrolling commands `scroll-up-command' and `scroll-down-command'
0a19a6f8 1631(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
7d301ae6 1632of buffer at first key-press (instead they move to top/bottom of buffer)
550f41cd 1633when `scroll-error-top-bottom' is non-nil.
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1634
1635*** New option `scroll-error-top-bottom' (see above).
1636
041d709f 1637*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 1638scroll a line instead of full screen.
dfdb4cad 1639
041d709f 1640*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 1641define it as a scroll command affected by `scroll-preserve-screen-position'.
dfdb4cad 1642
041d709f 1643*** If you customize `scroll-conservatively' to a value greater than 100,
d0f69533
EZ
1644Emacs will never recenter point in the window when it scrolls due to
1645cursor motion commands or commands that move point (e.f., `M-g M-g').
1646Previously, you needed to use `most-positive-fixnum' as the value of
1647`scroll-conservatively' to achieve the same effect.
dfdb4cad 1648
7d301ae6 1649*** "Aggressive" scrolling now honors the scroll margins.
d0f69533
EZ
1650If you customize `scroll-up-aggressively' or
1651`scroll-down-aggressively' and move point off the window, Emacs now
1652scrolls the window so as to avoid positioning point inside the scroll
1653margin.
1654
7d301ae6
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1655** Basic SELinux support has been added.
1656This requires Emacs to be linked with libselinux at build time.
f1a5d776 1657
dfdb4cad
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1658*** Emacs preserves the SELinux file context when backing up.
1659Also, the function `copy-file' has an extra optional argument for
1660preserving SELinux context, and the return value of `backup-buffer'
1661now includes the SELinux context.
f0bf7c8e 1662
dfdb4cad 1663*** New functions `file-selinux-context' and `set-file-selinux-context'
7d301ae6 1664get and set the SELinux context of a file.
44198b6e 1665
7d301ae6 1666** Trash changes
dfdb4cad 1667
7d301ae6
CY
1668*** `delete-by-moving-to-trash' now only affects commands that specify
1669trashing. This avoids inadvertently trashing temporary files.
dfdb4cad 1670
7d301ae6
CY
1671*** Calling `delete-file' or `delete-directory' with a prefix argument
1672now forces true deletion, regardless of `delete-by-moving-to-trash'.
278f6845 1673
041d709f 1674** File- and directory-local variable changes
dfdb4cad 1675
041d709f
CY
1676*** You can stop directory local vars from applying to subdirectories.
1677Add an element (subdirs . nil) to the alist portion of any variables
1678settings to indicate that the section should not apply to
1679subdirectories.
dfdb4cad 1680
041d709f
CY
1681*** Directory local variables can apply to some file-less buffers.
1682Affected modes include dired, vc-dir, and log-edit. For example,
1683adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
1684turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
1685`hack-dir-local-variables-non-file-buffer' to support this.
dfdb4cad 1686
041d709f
CY
1687*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
1688Instead, use "eval: (minor-mode 1)".
c136e5cd 1689
7b447e9b
GM
1690*** The variable `inhibit-first-line-modes-regexps' has been renamed
1691to `inhibit-local-variables-regexps'. As the name suggests, it now
dfdb4cad
CY
1692applies to ALL file local variables, not just -*- lines. The
1693associated `inhibit-first-line-modes-suffixes' has been renamed in the
1694corresponding way.
5d907d6c 1695
0a2132ba
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1696** Window changes
1697
91b65361
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1698*** The `quit-window' command now restores the last buffer displayed
1699in the quitted window.
1700
0a2132ba
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1701*** Resizing an Emacs frame now preserves proportional window sizes,
1702modulo restrictions like window minimum sizes and fixed-size windows.
1703
1704*** The behavior of `display-buffer' is now customizable in detail.
dfdb4cad 1705
0a2132ba
CY
1706**** New option `display-buffer-base-action' specifies a list of
1707user-determined display "actions" (functions and optional arguments
1708for choosing the displaying window).
1709
1710This takes precedence over the default display action, which is
1711specified by `display-buffer-fallback-action'.
1712
1713**** New option `display-buffer-alist' maps buffer name regexps to
1714display actions, taking precedence over `display-buffer-base-action'.
1715
a0c2d0ae
MR
1716*** New option `window-combination-limit'.
1717The new option `window-combination-limit' allows to return the space
1718obtained for resizing or creating a window more reliably to the window
1719from which such space was obtained.
0a2132ba 1720
a0c2d0ae
MR
1721*** New option `window-combination-resize'.
1722The new option `window-combination-resize' allows to split a window that
1723otherwise cannot be split because it's too small by stealing space from
1724other windows in the same combination. Subsequent resizing or deletion
1725of the window will resize all windows in the same combination as well.
0a2132ba 1726
91b65361
CY
1727*** New option `frame-auto-hide-function' lets you choose between
1728iconifying or deleting a frame when burying a buffer in a dedicated
1729frame, or quitting a window showing a buffer in a frame of its own.
1730
0a2132ba 1731*** New commands `maximize-window' and `minimize-window'.
53964682 1732These maximize and minimize the size of a window within its frame.
0a2132ba 1733
0a2132ba
CY
1734*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
1735These functions allow to navigate through the live buffers that have
1736been shown in a specific window.
1737
7d301ae6 1738** Minibuffer changes
dfdb4cad 1739
7d301ae6 1740*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
104dc9c6
GM
1741This is handy for minibuffer-only frames, and is also used for the feature
1742where mouse-1 pops up *Messages*"', which can now easily be changed.
041d709f 1743
7d301ae6 1744*** Minibuffers set `truncate-lines' to nil.
f66eca26 1745If you want to change the value to something else, you could use
7d301ae6
CY
1746for example `minibuffer-setup-hook'.
1747
7d301ae6
CY
1748** `auto-mode-case-fold' is now enabled by default.
1749
7d301ae6 1750** `backup-by-copying-when-mismatch' now defaults to t.
f66eca26 1751
dfdb4cad
CY
1752** New basic faces `error', `warning', `success'.
1753These are used to highlight text indicating failure, caution or
1754successful operation.
1755
1756** New option `list-colors-sort' defines the color sort order
1757for `list-colors-display'.
1758
1759** The variable `focus-follows-mouse' now always defaults to nil.
1760
0bfd685e 1761\f
eb199145 1762* Editing Changes in Emacs 24.1
b350bdf2 1763
892777ba 1764** Search changes
dfdb4cad
CY
1765
1766*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
1767`isearch-yank-line'.
1768
1769*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
1770`isearch-yank-kill'.
1771
1772*** M-s C-e in Isearch is now bound to `isearch-yank-line'.
1773
b2b0776e 1774** New commands `count-words-region' and `count-words'.
dfdb4cad 1775
10607bea
CY
1776*** M-= is bound to `count-words-region', not `count-lines-region'.
1777The `count-words-region' command, when called interactively, reports
1778the number of lines, words, and characters in the region. It is a
1779superset of the old `count-lines-region', which is now an obsolete
1780alias for it.
ea4f7750 1781
ec9da840 1782** The command `just-one-space' (M-SPC), if given a negative argument,
1c708c1a
CY
1783also deletes newlines around point.
1784
b9229673 1785** Deletion changes
dfdb4cad 1786
b9229673 1787*** New option `delete-active-region'.
ddb54206 1788If non-nil, [delete] and DEL delete the region if it is active and no
dfdb4cad 1789prefix argument is given. If set to `kill', those commands kill
ddb54206 1790instead.
dfdb4cad 1791
59ee0542 1792*** New command `delete-forward-char', bound to [delete].
42d9cffa
CY
1793This is meant for interactive use, and obeys `delete-active-region'.
1794The command `delete-char' does not obey `delete-active-region'.
dfdb4cad 1795
b9229673
CY
1796*** `delete-backward-char' is now a Lisp function.
1797Apart from obeying `delete-active-region', its behavior is unchanged.
7d301ae6
CY
1798However, the byte compiler now warns if it is called from Lisp; Lisp
1799callers should use delete-char with a negative argument instead.
dfdb4cad 1800
b9229673
CY
1801*** The option `mouse-region-delete-keys' has been deleted.
1802
f9d71b42
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1803** Selection changes.
1804
7d301ae6
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1805The default handling of clipboard and primary selections has been
1806changed to conform with modern X applications. In short, most
1807commands for killing and yanking text now use the clipboard, while
1808mouse commands use the primary selection.
b1ab31ae
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1809
1810In the following, we provide a list of these changes, followed by a
1811list of steps to get the old behavior back if you prefer that.
1812
b1ab31ae
CY
1813*** `select-active-regions' now defaults to t.
1814Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 1815the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
1816the system possesses a separate primary selection facility (e.g. X).
1817
1818**** `select-active-regions' also accepts a new value, `only'.
1819This means to only set the primary selection for temporarily active
1820regions (usually made by mouse-dragging or shift-selection);
1821"ordinary" active regions, such as those made with C-SPC followed by
1822point motion, do not alter the primary selection.
1823
963578d3
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1824**** `mouse-drag-copy-region' now defaults to nil.
1825
b1ab31ae
CY
1826*** mouse-2 is now bound to `mouse-yank-primary'.
1827This pastes from the primary selection, ignoring the kill-ring.
1828Previously, mouse-2 was bound to `mouse-yank-at-click'.
dfdb4cad 1829
b1ab31ae 1830*** `x-select-enable-clipboard' now defaults to t on all platforms.
dfdb4cad 1831
b1ab31ae
CY
1832*** `x-select-enable-primary' now defaults to nil.
1833Thus, commands that kill text or copy it to the kill-ring (such as
1834M-w, C-w, and C-k) also use the clipboard---not the primary selection.
1835
1836**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
dfdb4cad 1837exactly equivalent to M-w, C-w, and C-y respectively.
b1ab31ae
CY
1838
1839**** Note that on MS-Windows, `x-select-enable-clipboard' was already
1840non-nil by default, as Windows does not support the primary selection
1841between applications.
1842
1843*** To return to the previous behavior, do the following:
dfdb4cad 1844
104c2fe9 1845**** Change `select-active-regions' to nil.
b1ab31ae
CY
1846**** Change `mouse-drag-copy-region' to t.
1847**** Change `x-select-enable-primary' to t (on X only).
1848**** Change `x-select-enable-clipboard' to nil.
1849**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 1850
084e6df3 1851*** Support for X cut buffers has been removed.
dfdb4cad 1852
3fd50d5c
CY
1853*** X clipboard managers are now supported.
1854To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 1855
dfdb4cad
CY
1856** New command `C-x r N' (`rectangle-number-lines') numbers the lines
1857in the current rectangle. With a prefix argument, this prompts for a
1858number to count from and for a format string.
99f053cf 1859
7d301ae6 1860** `redisplay-dont-pause' now defaults to t.
6bf7006f
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1861This makes Emacs feel more responsive to editing commands that arrive
1862at high rate, e.g. if you lean on some key, because stopping redisplay
1863in the middle (when this variable is nil) forces more expensive
1864updates later on, and Emacs appears to be unable to keep up.
1865
e70b5064
CY
1866** The behavior of <TAB> for active regions in Text mode has changed.
1867In Text and related modes, typing <TAB> (`indent-for-tab-command')
1868when the region is active causes Emacs to indent all the lines in the
1869region, aligning them with the line previous to the first line in the
1870region (or with the left margin if there is no previous line).
1871
dfdb4cad
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1872** When `occur' is called with a prefix argument, matching strings are
1873collected into the `*Occur*' buffer without line numbers. If there
1874are parenthesized subexpressions in the specified regexp, `occur'
1875reads replacement text that may contain \\& and \\N whose convention
1876follows `replace-match'.
1877
9bae34bf 1878\f
eb199145 1879* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 1880
041d709f 1881** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 1882
b7c3692a 1883** BibTeX mode
dfdb4cad 1884
2de69e00 1885*** BibTeX mode now supports biblatex.
7d301ae6
CY
1886Use the variable `bibtex-dialect' to select different BibTeX dialects.
1887`bibtex-entry-field-alist' is now an obsolete alias for
1888`bibtex-BibTeX-entry-alist'.
1889
dfdb4cad
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1890*** New command `bibtex-search-entries', bound to C-c C-a.
1891
b7c3692a 1892*** New `bibtex-entry-format' option `sort-fields', disabled by default.
dfdb4cad 1893
022fe7ce
RW
1894*** New variable `bibtex-search-entry-globally'.
1895
7d301ae6 1896** Browse-url
dfdb4cad 1897
7d301ae6 1898*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
dfdb4cad 1899
7d301ae6
CY
1900*** The default browser used by the package is now the "xdg-open" program,
1901on platforms that support it. This calls your desktop's preferred browser.
1902
86e100a6
GM
1903** Calc
1904
1905*** Support for musical notes.
1906
1907*** Support for logarithmic units.
1908
1909*** No longer uses the tex prefix for TeX specific unit names when
1910using TeX or LaTeX mode.
1911
1912*** New option to highlight selections using faces.
1913
1914*** `calc-histogram' has the option of using a vector to determine the bins.
1915
1916*** New "O" option prefix.
1917
1918*** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
1919
cf16af42
GM
1920** Calendar, Diary, and Appt
1921
7d301ae6 1922*** Diary entries can contain non-printing "comments".
548d0a63
GM
1923See the variable `diary-comment-start'.
1924
5006e634
GM
1925*** Appointments can specify their individual warning times.
1926See the variable `appt-warning-time-regexp'.
1927
0a2bb1a9
GM
1928*** The function specified by `appt-disp-window-function' may be passed
1929lists of arguments if multiple appointments are due at similar times.
1930If you are using a custom function for this, you should update it.
1931
7454f200
GM
1932*** New function `diary-hebrew-birthday'.
1933
e565dd37
GM
1934*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
1935may no longer be nil, but must all be strings.
1936
7d301ae6
CY
1937*** The obsolete (since Emacs 22.1) method of enabling the appt
1938package by adding `appt-make-list' to `diary-hook' has been removed.
1939Use `appt-activate' instead.
cf16af42 1940
cf16af42
GM
1941*** Some appt variables (obsolete since Emacs 22.1) have been removed:
1942appt-issue-message (use the function appt-activate)
1943appt-visible/appt-msg-window (use the variable appt-display-format)
1944
cf16af42
GM
1945*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
1946view-diary-entries, list-diary-entries, show-all-diary-entries
1947
551b046f 1948** CC Mode
dfdb4cad 1949
551b046f 1950*** New feature to "guess" the style in an existing buffer.
7d301ae6 1951The main entry point is M-x c-guess.
041d709f 1952
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AM
1953*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
1954
dfdb4cad 1955*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
551b046f
AM
1956Thus C-M-a will, by default, go to the beginning of the immediate function,
1957not the top level.
1958
dfdb4cad 1959*** "Macros with semicolons" can be registered for correct indentation.
551b046f
AM
1960Where such a macro ends a line (no semicolon) the next statement is no longer
1961parsed as a statement continuation.
1962
dfdb4cad 1963** Comint and modes derived from it use the standard completion code.
041d709f
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1964
1965** Compilation mode
dfdb4cad 1966
7d301ae6 1967*** Compilation mode can be used without Font Lock mode.
041d709f
CY
1968`compilation-parse-errors-function' is now obsolete.
1969
dfdb4cad 1970*** New variable `compilation-filter-start', which is bound while
7d301ae6
CY
1971`compilation-filter-hook' runs. It records the start position of the
1972text inserted by `compilation-filter'.
041d709f 1973
47a6a35f
GM
1974*** `compilation-error-screen-columns' and `compilation-first-column'
1975are obeyed in the editing buffer. So programming language modes can
7d301ae6
CY
1976set them, whereas previously only the value in the *Compilation*
1977buffer was used.
1dce7193 1978
52834b6b
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1979** Customize
1980
1981*** Customize buffers now contain a search field.
1982The search is performed using `customize-apropos'.
7d301ae6 1983To turn off the search field, set `custom-search-field' to nil.
52834b6b 1984
8d5dd370 1985*** Options in customize group buffers start out hidden if not customized.
52834b6b
CY
1986Use the arrow to the left of the option name to toggle visibility.
1987
1988*** custom-buffer-sort-alphabetically now defaults to t.
1989
1990*** The color widget now has a "Choose" button, which allows you to
7d301ae6 1991choose a color via `list-colors-display'.
52834b6b 1992
041d709f
CY
1993** D-Bus
1994
5da3be7f
GM
1995*** It is now possible to access buses other than the default system
1996or session bus.
041d709f 1997
7d301ae6 1998*** The `dbus-register-method' and `dbus-register-property' functions
5da3be7f 1999optionally do not register names.
041d709f 2000
7d301ae6 2001*** The new function `dbus-register-service' registers a known service
dfdb4cad 2002name on a D-Bus without also registering a property or a method.
041d709f 2003
f5d6548a 2004** Dired-x
425a25f1 2005
7d301ae6
CY
2006*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2007if called with a prefix argument, read a file name from the minibuffer
2008instead of using the current buffer.
f5d6548a 2009
7d301ae6 2010*** The "dired local variables" feature of Dired-x is obsolete.
817b48a7 2011The standard directory local variables feature replaces it.
8117868f 2012
041d709f 2013** ERC changes
7492acc9 2014
c4077254
GM
2015*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2016controlling attempts to autojoin a channel.
041d709f
CY
2017
2018*** New variable `erc-coding-system-precedence': If we use `undecided'
2019as the server coding system, this variable will then be consulted.
2020The default is to decode strings that can be decoded as utf-8 as
2021utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 2022
041d709f 2023** Eshell changes
7492acc9 2024
05f77e38
GM
2025*** The default value of `eshell-directory-name' has changed
2026to be an "eshell" directory in `user-emacs-directory'.
2027The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
2028
2029** gdb-mi
dfdb4cad
CY
2030
2031*** The M-x gdb command now uses the GDB Machine Interface protocol.
05f77e38
GM
2032It now supports multithread non-stop debugging and simultaneous
2033debugging of several threads.
7492acc9 2034
18af70d0
CY
2035** Image mode
2036
05f77e38
GM
2037*** RET (`image-toggle-animation') toggles animation, if applicable.
2038Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 2039
041d709f 2040** Info
723ee192 2041
7d301ae6 2042*** New command M-x info-display-manual displays a named Info manual.
2ebc3b94
GM
2043If that manual is already visited in some Info buffer, it displays
2044that buffer. (This is handy if you have many manuals in many *info*
2045buffers, and don't remember the name of the buffer visiting the manual
2046you want to consult.) Otherwise, it loads and displays the manual.
691cf4a0 2047
24ea72d3
EZ
2048*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2049This is for compatibility with the stand-alone Info reader program,
2050and also because `Info-edit' is a rarely used command that is disabled
2051by default.
2052
7d301ae6 2053** Mail mode changes (not Message mode)
dfdb4cad 2054
7d301ae6 2055*** New command M-x mail-add-attachment for adding MIME attachments
7d301ae6 2056
dfdb4cad
CY
2057*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2058(Its name is misleading, since it has nothing to do with MIME
2059attachments.) The old name is now an obsolete alias to the new name.
2060
f2c3a9eb 2061** MH-E has been updated to MH-E version 8.3.1.
041d709f 2062See MH-E-NEWS for details.
37221432 2063
041d709f 2064** Modula-2 mode provides auto-indentation.
37221432 2065
041d709f 2066** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 2067
5d1ac394 2068** nXML mode no longer binds C-RET to `nxml-complete'.
dfdb4cad
CY
2069Completion is now performed via `completion-at-point', bound to C-M-i
2070or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2071default), this performs tag completion.
5d1ac394 2072
f2c3a9eb
CY
2073** Org mode has been updated to version 7.8.09.
2074See ORG-NEWS for details.
2075
041d709f 2076** Prolog mode has been completely revamped, with lots of additional
7d301ae6
CY
2077functionality such as more intelligent indentation, electricity,
2078support for more variants, including Mercury, and a lot more.
041d709f
CY
2079
2080** Rmail
2081
2082*** The command `rmail-epa-decrypt' decrypts OpenPGP data
2083in the Rmail incoming message.
2084
50419064
GM
2085*** The variable `rmail-message-filter' no longer has any effect.
2086This change was made in Emacs 23.1 but was not advertised at the time.
2087Try using `rmail-show-message-hook' instead.
2088
717a1362 2089** Shell mode
dfdb4cad
CY
2090
2091*** M-x shell prompts for the shell path name if the default directory
2092is a remote file name and neither the environment variable $ESHELL nor
2093the variable `explicit-shell-file-name' is set.
2094
2095*** TAB is now bound to the standard `completion-at-point' command,
2096which now implements the pcomplete rules for shell command completion.
717a1362 2097
7d301ae6
CY
2098** SMTPmail
2099
dfdb4cad 2100*** SMTPmail now uses encrypted connections (via STARTTLS) by default
7d301ae6
CY
2101if the mail server supports them. This uses either built-in GnuTLS
2102support, or the starttls.el library. Customize `smtpmail-stream-type'
2103to change this.
2104
7d301ae6
CY
2105*** The variable `smtpmail-auth-credentials' has been removed.
2106By default, the information is now stored in the file ~/.authinfo.
dfdb4cad
CY
2107This was the default value of smtpmail-auth-credentials. If you had
2108customized smtpmail-auth-credentials to a list of user names and
2109passwords, those settings are not used. During your first connection
2110to the smtp server, Emacs will prompt for the user name and password,
2111and offer to save them to ~/.authinfo. Or you can manually copy the
2112credentials to ~/.authinfo. For example, if you had
7d301ae6
CY
2113
2114 (setq smtpmail-auth-credentials
2115 '(("mail.example.org" 25 "jim" "s!cret")))
2116
2117then the equivalent line in ~/.authinfo would be
2118
2119 machine mail.example.org port 25 login jim password s!cret
2120
2121See the auth-source manual for more information, e.g. on encrypting
2122the credentials file.
2123
7d301ae6 2124*** The variable `smtpmail-starttls-credentials' has been removed.
dfdb4cad 2125If you had that set, you need to put
7d301ae6
CY
2126
2127 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2128
2129in your ~/.authinfo file instead.
2130
8ce192e3
LI
2131*** SMTPmail defaults to using the address in the From: header as the
2132SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2133to the address you wish to use instead.
2134
34e8a2da 2135** SQL mode
041d709f 2136
34e8a2da
GM
2137*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2138and `sql-oracle-scan-on'.
041d709f 2139
dfdb4cad 2140*** New options controlling prompting for login parameters.
34e8a2da
GM
2141Each supported product has a custom variable `sql-*-login-params',
2142which is a list of the parameters to be prompted for before a
2143connection is established.
041d709f
CY
2144
2145*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 2146which causes it to prompt for an SQL product.
041d709f 2147
34e8a2da 2148*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
2149These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2150given a prefix argument, prompt for a name for the SQL interactive
2151buffer. This reduces the need for calling `sql-rename-buffer'.
2152
2153*** SQL interactive modes suppress command continuation prompts, and
2154replace tabs with spaces. The first change impacts multiple line SQL
2155statements entered with C-j between each line, statements yanked into
2156the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
2157second prevents the MySQL and Postgres interpreters from listing
2158object name completions when sent text via `sql-send-*' functions.
041d709f
CY
2159
2160*** New command `sql-connect' starts a predefined SQLi session,
2161using the login parameters from `sql-connection-alist'.
2162
2163*** New "Save Connection" menu item in SQLi buffers.
2164This gathers the login params specified for the SQLi session, if it
2165was not started by a connection, and saves them as a new connection.
2166
34e8a2da
GM
2167*** New commands for listing database objects and details:
2168sql-list-all and sql-list-table.
041d709f
CY
2169
2170*** An API for manipulating SQL product definitions has been added.
2171
2172** TeX modes
2173
2174*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 2175
459bba37 2176** Tramp
dfdb4cad 2177
7d301ae6 2178*** New inline access method "ksu" (kerberized su).
dfdb4cad 2179
459bba37 2180*** The following access methods are discontinued: "ssh1_old",
ea843702 2181"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
dfdb4cad 2182
b011fbfe
GM
2183*** The user option `remote-file-name-inhibit-cache' controls whether
2184remote file attributes are cached for better performance.
dfdb4cad 2185
58f74fe4
MA
2186*** The option `ange-ftp-binary-file-name-regexp' has changed its
2187default value to "".
dfdb4cad 2188
7d301ae6
CY
2189*** Handlers for `file-selinux-context' and `set-file-selinux-context'
2190for remote machines which support SELinux.
58f74fe4 2191
dfdb4cad 2192** New function `url-queue-retrieve', which behaves like url-retrieve,
a48ec60c
GM
2193but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2194the degree of parallelism.
177549d0 2195
0c32ce32
CY
2196** VC and related modes
2197
2198*** Support for pulling on distributed version control systems.
7d301ae6
CY
2199The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2200supported (currently with Bzr, Git, and Mercurial), to update the
2201current branch and working tree. A prefix argument means to prompt
2202the user for specifics, e.g. a pull location.
0c32ce32 2203
dab3703d 2204*** `vc-update' is now an alias for `vc-pull'.
0c32ce32
CY
2205
2206*** Support for merging on distributed version control systems.
7d301ae6
CY
2207The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2208is supported (currently with Bzr, Git, and Mercurial), to merge
2209changes from another branch into the current one. It prompts for
2210specifics, e.g. a merge source.
0c32ce32 2211
2afef60a 2212*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 2213shows a diff while querying the user. It defaults to t.
2afef60a 2214
d4eb88c7
CY
2215*** Log entries in some Log View buffers can be toggled to display a
2216longer description by typing RET (log-view-toggle-entry-display).
dab3703d
GM
2217This is currently supported for Bzr, Git, and Mercurial (to support
2218another backend, define a `log-view-expanded-log-entry-function').
7d301ae6 2219In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
d4eb88c7
CY
2220use this to display the full log entry for the revision at point.
2221
1c6c854e
CS
2222*** New command `vc-ediff' allows visual comparison of two revisions
2223of a file similar to `vc-diff', but using ediff backend.
2224
86c60681
CY
2225*** The option `vc-initial-comment' was removed in Emacs 23.2, but
2226this was not advertised at the time.
2227
86c60681
CY
2228*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2229Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
2230this was not advertised at the time.
2231
041d709f
CY
2232** Obsolete modes
2233
23d70505
GM
2234*** abbrevlist.el
2235
f8ca9162 2236*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
2237
2238*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
2239You can get a comparable behavior with:
2240(setq completion-styles '(partial-completion initials))
2241(setq completion-pcm-complete-word-inserts-delimiters t)
2242
23d70505
GM
2243*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2244
2c719188 2245*** pgg is obsolete (use EasyPG instead).
041d709f
CY
2246
2247*** sregex.el is obsolete, since rx.el is a strict superset.
2248
23d70505
GM
2249*** s-region.el and pc-select.el are obsolete.
2250They are superseded by shift-select-mode, enabled by default since 23.1.
2251
2c719188 2252*** vc-mcvs.el is obsolete (for lack of a maintainer).
ca5eed61 2253
0fe719e6
GM
2254** Miscellaneous
2255
05f77e38 2256*** The Landmark game is now invoked with `landmark', not `lm'.
c6ad2a4e 2257Its functions and variables have been similarly renamed.
05f77e38 2258
dfdb4cad 2259*** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
05f77e38
GM
2260(This interfered with cua-mode.)
2261
9f678528
GM
2262*** f90.el has some support for Fortran 2008 syntax.
2263
0fe719e6
GM
2264*** `copyright-fix-years' can optionally convert consecutive years to ranges.
2265
5b3e6db8
GM
2266*** New command `nato-region' converts text to NATO phonetic alphabet.
2267
eb199145
GM
2268\f
2269* New Modes and Packages in Emacs 24.1
d445b3f8 2270
60e56523 2271** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 2272original buffers. It is bound to "e" in Occur mode.
60e56523 2273
a075a2c5
GM
2274** New global minor mode electric-pair-mode.
2275When enabled, typing an open parenthesis automatically inserts the
2276matching closing one.
2277
2278** New global minor mode electric-indent-mode.
2279When enabled, typing certain characters triggers reindentation.
cd3308f3
GM
2280Major modes wishing to use this can set electric-indent-chars or
2281electric-indent-functions.
a075a2c5
GM
2282
2283** New global minor mode electric-layout-mode.
2284When enabled, typing certain characters automatically inserts newlines.
cd3308f3 2285Major modes wishing to use this can set electric-layout-rules.
3b843809 2286
a83ec3c9
CY
2287** tabulated-list.el provides a generic major mode for tabulated data,
2288from which other modes can be derived.
2289
d02c9bcd
SM
2290** pcase.el provides the ML-style pattern matching macro `pcase'.
2291
7725ebb7
MA
2292** secrets.el is an implementation of the Secret Service API, an
2293interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
2294Secret Service API requires D-Bus for communication. The command
2295`secrets-show-secrets' offers a buffer with a visualization of the
2296secrets.
7725ebb7 2297
f9e78150
MA
2298** notifications.el provides an implementation of the Desktop
2299Notifications API. It requires D-Bus for communication.
2300
12fe5bcc
MA
2301** soap-client.el supports access to SOAP web services from Emacs.
2302soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2303
ff1796f3 2304** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 2305
53bbe3ad 2306** New emacs-lock.el package.
7d301ae6
CY
2307The previous version has been moved to obsolete/old-emacs-lock.el.
2308Now, there is a proper minor mode `emacs-lock-mode'. Protection
2309against exiting Emacs and killing the buffer can be set separately.
2310The mechanism for automatically turning off protection for buffers
2311with dead inferior processes has been generalized.
53bbe3ad 2312
eb199145
GM
2313\f
2314* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 2315
7d301ae6
CY
2316** Passing a nil argument to a minor mode function call now ENABLES
2317the minor mode unconditionally. This is so that you can write e.g.
2318
dfdb4cad 2319 (add-hook 'text-mode-hook 'foo-mode)
7d301ae6 2320
dfdb4cad
CY
2321to enable foo-mode in Text mode buffers, removing the need for
2322`turn-on-foo-mode' style functions. This affects all mode commands
2323defined by `define-minor-mode'. If called interactively, the mode
2324command still toggles the minor mode.
7d301ae6 2325
d268b4fe
CY
2326** The return value of `backup-buffer' has changed.
2327It is now a list of three elements, where the second element is a list
2328describing the original file's SELinux context. If Emacs or the
f003f294 2329system lacks SELinux support, the context list is (nil nil nil nil).
7d301ae6 2330See "Basic SELinux support" above, under "Changes in Emacs 24.1".
d268b4fe 2331
dfdb4cad
CY
2332** `char-direction-table' and the `char-direction' function were deleted.
2333They were buggy and inferior to the new support of bidirectional
2334editing introduced in Emacs 24. If you need the bidirectional
2335properties of a character, use `get-char-code-property' with the last
2336argument `bidi-class'.
fa6996bc 2337
470d996d
TV
2338** `copy-directory' now copies the source directory as a subdirectory
2339of the target directory, if the latter is an existing directory. The
2340new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2341the contents directly into a pre-existing target directory.
2342
9173a8fb
CY
2343** For mouse click input events in the text area, the Y pixel
2344coordinate in the POSITION list now counts from the top of the text
2345area, excluding any header line. Previously, it counted from the top
2346of the header line.
2347
7d301ae6
CY
2348** Support for "old-style" backquotes, obsolete for 10+ years, has
2349been further reduced. Now a backquote not followed by a space is
2350always treated as a "new-style" backquote. Please remove all
2351"old-style" backquotes from your code. If your code uses backquotes
2352as documented in the Elisp manual, and compiles without warning, then
2353you have nothing to do in this regard. Code not following the
2354appropriate conventions may fail to compile.
50ab02c5
CY
2355
2356The most common cause of trouble seems to be an old-style backquote
2357followed by a newline. Another cause of trouble is vector notation
2358for key sequence notation: instead of [(control ,)] and [(control ')],
2359you should write [(control ?,)] and [(control ?')], which will work in
7d301ae6 2360older Emacsen too.
288cf4e9 2361
520f2425
GM
2362** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2363was not advertised at the time. The function `custom-initialize-delay'
2364replaced all known uses.
2365
7d301ae6
CY
2366** `view-buffer' now treats special mode-class in the same way that
2367`view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2368major mode is special).
fd5c9dfa 2369
7d301ae6 2370** Menu and tool bar changes
6431f2e6 2371
7d301ae6 2372*** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
2373and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2374With these alist entries omitted, `make-frame' checks the value of the
2375variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2376a menu-bar or tool-bar, respectively. If the alist entries are added,
2377they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 2378
7d301ae6
CY
2379*** The menu bar bindings's caches are not used any more.
2380Use (where-is-internal <def> nil t) instead.
2381
fe0aa820 2382** Regions created by mouse dragging are now normal active regions,
dfdb4cad 2383similar to those created by shift-selection (see Selection changes
7d301ae6
CY
2384above). In previous Emacs versions, these regions were delineated by
2385`mouse-drag-overlay'; that variable has been removed.
d6d8ee7a 2386
7d301ae6
CY
2387** The fourth argument of `filter-buffer-substring' has been removed.
2388If you want to remove text properties from the final result, simply
2389pass the result through substring-no-properties.
34c99998 2390
4583e796
GM
2391** cl.el no longer provides `cl-19'.
2392
7d301ae6
CY
2393** The following obsolete functions and aliases have been removed
2394(the appropriate new function is given in parentheses; "not needed"
2395means you can just remove all calls to the function in question):
2396
2397*** `comint-kill-output' (`comint-delete-output')
2398*** `decompose-composite-char' (`char-to-string')
2399*** `outline-visible' (`outline-invisible-p')
2400*** `internal-find-face' (`facep')
2401*** `internal-get-face' (`facep and check-face')
2402*** `frame-update-faces' (not needed)
2403*** `frame-update-face-colors' (`frame-set-background-mode')
2404*** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2c719188 2405*** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
7d301ae6
CY
2406*** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2407*** `x-make-font-bold-italic' (`make-face-bold-italic')
2408*** `x-make-font-unbold' (`make-face-unbold')
2409*** `x-make-font-unitalic' (`make-face-unitalic')
2410*** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2411*** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2412*** `iswitchb-default-keybindings' (`iswitchb-mode')
2413*** `char-bytes' (== 1)
2414*** `isearch-return-char' (`isearch-printing-char')
2415*** `make-local-hook' (not needed)
2416*** `set-screen-height' (`set-frame-height')
2417*** `set-screen-width' (`set-frame-width')
2418
7d301ae6
CY
2419** The following obsolete variables and varaliases have been removed
2420(the appropriate new variable is given in parentheses):
2421
2422*** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2423*** `vc-header-alist' (`vc-BACKEND-header')
2424*** `directory-sep-char' (== ?/)
2425*** `font-lock-defaults-alist' (`font-lock-defaults')
2426*** `e' (`float-e').
3226d6ca 2427
041d709f 2428** The following obsolete files were removed:
7b0e3048
GM
2429sc.el, x-menu.el, rnews.el, rnewspost.el
2430
7d301ae6
CY
2431** The format of the finder-inf.el file has changed, since the Finder
2432mechanism is now based on the package system. The variable
2433`finder-package-info' is replaced by `package--builtins' and
2434`finder-keywords-hash'.
33658d4e 2435
c2c79260
DE
2436** When generating autoloads, `update-directory-autoloads' no longer
2437assumes every inspected file is in your `load-path'. It instead
2438generates relative names according to the current `load-path'.
2439
eb199145 2440\f
93e0bed6 2441* Lisp Changes in Emacs 24.1
9097e8af 2442
041d709f 2443** Code can now use lexical scoping by default instead of dynamic scoping.
dfdb4cad 2444The `lexical-binding' variable enables lexical scoping for local
48da7392 2445variables. It is typically set via a file-local variable in the first
dfdb4cad
CY
2446line of the file, in which case it applies to all the code in that
2447file.
2448
041d709f
CY
2449*** `eval' takes a new optional argument `lexical' to choose the new lexical
2450binding instead of the old dynamic binding mode.
dfdb4cad 2451
041d709f
CY
2452*** Lexically scoped interpreted functions are represented with a new form
2453of function value which looks like (closure ENV ARGS &rest BODY).
2454
2455*** New macro `letrec' to define recursive local functions.
dfdb4cad
CY
2456
2457*** `defvar' and `defconst' now mark the variable as special (dynamic).
2458So do `defcustom' and other forms that call `defvar' as a subroutine.
2459
041d709f
CY
2460*** New function `special-variable-p' to check whether a variable is
2461declared as dynamically bound.
2462
88ed9e87
SM
2463*** The form ((lambda ...) ...) is deprecated.
2464
041d709f
CY
2465** An Emacs Lisp testing tool is now included.
2466Emacs Lisp developers can use this tool to write automated tests for
2467their code. See the ERT info manual for details.
2468
2469** Changes for bidirectional display and editing
f1816485 2470
041d709f 2471*** New function `current-bidi-paragraph-direction'.
7d301ae6 2472This returns the base direction of the paragraph at point.
041d709f 2473
041d709f 2474*** New function `bidi-string-mark-left-to-right'.
dfdb4cad
CY
2475Given a string containing characters from right-to-left scripts, this
2476function returns another string which can be safely inserted into a
2477buffer, such that any following text will be always displayed to the
7d301ae6
CY
2478right of that string. (This works by appending an invisible Unicode
2479"LEFT-TO-RIGHT MARK" character if the argument string might need it.)
041d709f 2480
7d301ae6 2481This is useful when the buffer has overall left-to-right paragraph
dfdb4cad
CY
2482direction and you need to insert a string whose contents are not known
2483in advance, without disrupting the layout of the line.
041d709f 2484
bee0fcef 2485** Window changes
dfdb4cad 2486
c4682d18
MR
2487*** Window tree functions are accessible in Elisp.
2488Functions are provided to return the parent, siblings or child windows
2489of any window including internal windows (windows not associated with a
2490buffer) in the window tree.
dfdb4cad 2491
24300f5f
CY
2492**** New function `window-valid-p' gives non-nil for live and internal
2493windows.
dfdb4cad 2494
24300f5f 2495**** Window manipulation can deal with internal windows.
c4682d18
MR
2496Many window handling functions like `split-window', `delete-window', or
2497`delete-other-windows' as well as the window resizing functions can now
2498act on any window including internal ones.
dfdb4cad 2499
c4682d18
MR
2500*** window-total-height/-width vs window-body-height/-width.
2501The function `window-height' has been renamed to `window-total-height'
2502and `window-width' has been renamed to `window-body-width'. The old
2503names are provided as aliases. Two new functions `window-total-width'
2504and `window-body-height' are provided.
dfdb4cad 2505
c4682d18
MR
2506*** Window parameters specific to window handling functions.
2507For each window you can specify a parameter to override the default
2508behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
2509and `delete-other-windows'. The variable `ignore-window-parameters'
2510allows to ignore processing such parameters.
dfdb4cad 2511
c4682d18 2512*** New semantics of third argument of `split-window'.
c4682d18
MR
2513The third argument of `split-window' has been renamed to SIDE and can be
2514set to any of the values 'below, 'right, 'above, or 'left to make the
2515new window appear on the corresponding side of the window that shall be
2516split. Any other value of SIDE will cause `split-window' to split the
2517window into two side-by-side windows as before.
dfdb4cad 2518
c4682d18 2519*** Window resizing functions.
487ffd7a 2520A new standard function for resizing windows called `window-resize' has
c4682d18
MR
2521been introduced. This and all other functions for resizing windows no
2522longer delete any windows when they become too small.
dfdb4cad 2523
b3c0dbfd
MR
2524*** Deleting the selected window now selects the most recently selected
2525live window on that frame instead.
dfdb4cad 2526
c4682d18
MR
2527*** `adjust-window-trailing-edge' adjustments.
2528`adjust-window-trailing-edge' can now deal with fixed-size windows and
2529is able to resize other windows if a window adjacent to the trailing
2530edge cannot be shrunk any more. This makes its behavior more similar to
2531that of Emacs 21 without compromising, however, its inability to delete
2532windows which was introduced in Emacs 22.
dfdb4cad 2533
c4682d18
MR
2534*** Window-local buffer lists.
2535Windows now have local buffer lists. This means that removing a buffer
2536from display in a window will preferably show the buffer previously
2537shown in that window with its previous window-start and window-point
2538positions. This also means that the same buffer may be automatically
2539shown twice even if it already appears in another window.
dfdb4cad 2540
bee0fcef
CY
2541*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2542which if non-nil requires the buffer to be displayed in the currently
2543selected window, signaling an error otherwise. If nil, another window
2544can be used, e.g. if the selected one is strongly dedicated.
dfdb4cad 2545
0a2132ba 2546*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
2547to `split-window-below' and `split-window-right' respectively.
2548The old names are kept as aliases.
dfdb4cad 2549
0a2132ba
CY
2550*** Display actions
2551
2552**** The second arg to `display-buffer' and `pop-to-buffer' is now
2553named ACTION, and takes a display action of the same form as
2554`display-buffer-base-action' (see Changes, above). A non-nil,
2555non-list value is treated specially, as the old meaning.
2556
2557**** New variable `display-buffer-overriding-action'.
2558
2559**** The procedure of `display-buffer' etc. to choose a window is
2560determined by combining `display-buffer-overriding-action',
2561`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2562and `display-buffer-fallback-action'. The second and fourth of these
2563are user-customizable variables.
2564
2565See the docstring of `display-buffer' for details.
bee0fcef 2566
20d2304d
CY
2567*** New functions `window-state-get' and `window-state-put'.
2568These functions allow to save and restore the state of an arbitrary
2569frame or window as an Elisp object.
2570
a2a25d24 2571** Completion
041d709f 2572
7d301ae6
CY
2573*** New variable `completion-extra-properties' used to specify extra
2574properties of the current completion:
a2a25d24
SM
2575- :annotate-function, same as the old completion-annotate-function.
2576- :exit-function, function to call after completion took place.
2577
7d301ae6
CY
2578*** Functions on `completion-at-point-functions' can return any of the
2579properties valid for `completion-extra-properties'.
a2a25d24 2580
7d301ae6 2581*** `completion-annotate-function' is obsolete.
a2a25d24 2582
620c53a6
SM
2583*** New `metadata' method for completion tables. The metadata thus returned
2584can specify various details of the data returned by `all-completions':
2585- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2586 used to select a style in completion-category-overrides.
2587- `annotation-function' to add annotations in *Completions*.
2588- `display-sort-function' to specify how to sort entries in *Completions*.
2589- `cycle-sort-function' to specify how to sort entries when cycling.
2590
7d301ae6
CY
2591*** `minibuffer-local-filename-must-match-map' is not used any more.
2592Instead, the bindings in `minibuffer-local-filename-completion-map'
2593are combined with `minibuffer-local-must-match-map'.
de09aa52
CY
2594
2595*** New variable `completing-read-function' allows overriding the
2596behavior of `completing-read'.
2597
f042970d 2598** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
2599text terminal display, via a char-table entry that is a cons cell.
2600
7d301ae6 2601** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
f6d62986
SM
2602Instead, the offending function is removed.
2603
b1f6fa26
CY
2604** New hook types
2605
2606*** New function `run-hook-wrapped' for running an abnormal hook by
2607passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 2608Like `run-hook-with-args-until-success', it stops at the first
5385447f 2609non-nil return value.
e7bc51d0 2610
b1f6fa26
CY
2611*** New macro `with-wrapper-hook' for running an abnormal hook as a
2612set of "wrapping" filters, similar to around advice.
54521c99
GM
2613(A version of this macro was actually added in Emacs 23.2 but was not
2614advertised at the time.)
f6d62986 2615
0b19b281 2616** Debugger changes
dfdb4cad 2617
0b19b281 2618*** New macro `condition-case-unless-debug' (this was actually added in
1be3ca5a 2619Emacs 23.1 as condition-case-no-debug, but not advertised)
dfdb4cad 2620
0b19b281 2621*** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
dfdb4cad 2622
0b19b281 2623*** Variable `stack-trace-on-error' removed.
dfdb4cad 2624
0b19b281
CY
2625*** The debugger can now "continue" from an error, which means it will
2626jump to the error handler as if the debugger had not been invoked
2627instead of jumping all the way to the top-level.
dfdb4cad 2628
0b19b281
CY
2629*** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2630This can be useful when `inhibit-quit' is set.
d6b1d521 2631
953cebf5 2632** The new function `server-eval-at' allows evaluation of Lisp forms on
37576acd 2633named Emacs server instances.
7deebf1b 2634
1b9f60cc
GM
2635** `call-process' and `call-process-region' allow a `(:file "file")' spec
2636to redirect STDOUT to a file.
7deebf1b 2637
7d301ae6
CY
2638** The function `format-time-string' now supports the %N directive,
2639for higher-resolution time stamps.
da97a9e6 2640
0b19b281 2641** New input reading functions
dfdb4cad 2642
0b19b281
CY
2643*** New function `read-char-choice' reads a restricted set of
2644characters, discarding any inputs not inside the set.
dfdb4cad 2645
0b19b281
CY
2646*** The command `read-color' now requires a match for a color name
2647or RGB triplet, instead of signaling an error if the user provides
2648invalid input.
dfdb4cad 2649
0b19b281 2650**** `facemenu-read-color' is now an alias for `read-color'.
3ef01959 2651
2e288d54
JB
2652** `image-library-alist' is renamed to `dynamic-library-alist'.
2653The variable is now used to load all kind of supported dynamic libraries,
2654not just image libraries. The previous name is still available as an
2655obsolete alias.
2656
0b19b281 2657** Syntax parsing changes
dfdb4cad 2658
0b19b281 2659*** New variable `syntax-propertize-function'.
04e2ce72 2660This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
2661This allows syntax-table properties to be set independently from font-lock:
2662just call syntax-propertize to make sure the text is propertized.
2663Together with this new variable come a new hook
2664syntax-propertize-extend-region-functions, as well as two helper functions:
2665syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
2666as-is; and syntax-propertize-rules which provides a new way to specify
2667syntactic rules.
dfdb4cad 2668
0b19b281 2669*** Syntax tables support a new "comment style c" additionally to style b.
a2e5caf7 2670
7d301ae6 2671** New hook `post-self-insert-hook', run after `self-insert-command'.
041d709f 2672
4e2db1fe 2673** frame-local variables cannot be let-bound any more.
041d709f 2674
15de15c6 2675** Major and minor mode changes
dfdb4cad 2676
0b19b281
CY
2677*** `set-auto-mode' now respects mode: local variables at the end of files,
2678as well as those in the -*- line.
dfdb4cad 2679
15de15c6
CY
2680*** `prog-mode' is a new major mode from which programming modes
2681should be derived.
dfdb4cad 2682
15de15c6
CY
2683**** `prog-mode-hook' can be used to enable features for programming
2684modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
2685on-the-fly spell checking for comments and strings.
dfdb4cad 2686
15de15c6
CY
2687*** New hook `change-major-mode-after-body-hook', run by
2688`run-mode-hooks' just before any other mode hooks.
dfdb4cad 2689
7a9a2fc6
GM
2690*** Enabled globalized minor modes can be disabled in specific major modes.
2691If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
2692major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
dfdb4cad 2693
feb8a83a 2694*** `define-minor-mode' accepts new keywords :variable, :after-hook.
f44379e7 2695
7d301ae6
CY
2696** File-handling changes
2697
7d301ae6 2698*** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
2699Trashing is performed if TRASH and `delete-by-moving-to-trash' are
2700both non-nil. Interactively, TRASH defaults to t, unless a prefix
2701argument is supplied (see Trash changes, above).
53967e09 2702
7d301ae6 2703*** New file predicates: `file-equal-p', `file-in-directory-p'.
ec70a47d 2704
4039c786
CY
2705** Tool-bars can display separators.
2706Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 2707i.e. via menu entries of the form `(menu-item "--")'.
9317e499 2708
00fe2df1
JL
2709** Image API
2710
18af70d0
CY
2711*** Animated images support (currently animated gifs only).
2712
2713**** `image-animated-p' returns non-nil if an image can be animated.
2714
2715**** `image-animate' animates a supplied image spec.
2716
2717**** `image-animate-timer' returns the timer object for an image that
2718is being animated.
00fe2df1 2719
7cb76fe0
GM
2720*** `image-extension-data' has been renamed to `image-metadata'.
2721The old name is an obsolete alias to the new one.
1546c559 2722
b4ac6e8c
GM
2723*** Image mode can view any image type that ImageMagick supports.
2724This requires Emacs to be built with ImageMagick support.
7d301ae6
CY
2725
2726**** New function `imagemagick-types', defined if ImageMagick support
2727is enabled, returns a list of image file extensions that your
2728ImageMagick installation supports.
2729
2730**** New function `imagemagick-register-types' enables ImageMagick
2731image types in Image mode and in `create-image' and other helper
2732functions.
2733
2734**** New option `imagemagick-types-inhibit' excludes certain
2735ImageMagick image types from `imagemagick-register-types'.
2736
7d301ae6
CY
2737**** With ImageMagick support, there are extra Image mode commands to
2738resize and rotate images: `image-transform-fit-to-height',
2739`image-transform-fit-to-width', `image-transform-set-rotation', and
2740`image-transform-set-scale'.
041d709f 2741
7d301ae6
CY
2742** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
2743passes it to the mail user agent function. This argument specifies an
2744action for returning to the caller after finishing with the mail. For
2745example, this is used by Rmail to optionally delete a mail window.
b4ac6e8c 2746
71c17aec 2747** XML and HTML parsing
483ab230
CY
2748If Emacs is compiled with libxml2 support, there are two new
2749functions: `libxml-parse-html-region' (which parses "real world" HTML)
2750and `libxml-parse-xml-region' (which parses XML). Both return an
2751Emacs Lisp parse tree.
4b9832a6 2752
7d301ae6 2753** Networking and encryption changes
e2574f2c 2754
7d301ae6
CY
2755*** `open-network-stream' can now be used to open an encrypted stream.
2756It now accepts an optional `:type' parameter for initiating a TLS
2757connection, directly or via STARTTLS. To do STARTTLS, additional
2758parameters (`:end-of-command', `:success', `:capabilities-command')
2759must also be supplied.
2760
2761*** New library gnutls.el.
dfdb4cad
CY
2762The new function `gnutls-available-p' returns non-nil if Emacs is
2763built with GnuTLS support. The main entry points are
2764`open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
2765these functions through `open-network-stream', because that can
7d301ae6
CY
2766upgrade connections through STARTTLS opportunistically or use plain
2767SSL, depending on your needs. For debugging, set `gnutls-log-level'
2768greater than 0.
2769
7d301ae6
CY
2770*** New primitive `secure-hash' that supports many secure hash algorithms:
2771md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
2772sha1.el has been removed. The `sha1' feature is provided by default.
71c17aec 2773
a6020335
MH
2774** Isearch
2775
2776*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
2777
9326ba26
CY
2778** Progress reporters can now "spin".
2779The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
2780now be nil, or omitted. This makes a "non-numeric" reporter. Each
2781time you call `progress-reporter-update' on that progress reporter,
2782with a nil or omitted VALUE argument, the reporter message is
2783displayed with a "spinning bar".
2784
3e214b50
JB
2785** New variable `revert-buffer-in-progress-p' is true while a buffer is
2786being reverted, even if the buffer has a local `revert-buffer-function'.
2787
001bf877
GM
2788** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
2789If delayed-warnings-list is non-nil, the command loop calls
7d301ae6
CY
2790`delayed-warnings-hook' after `post-command-hook'. At present, this
2791is only used by Emacs on some platforms to display warnings during
2792startup, which might otherwise not be noticed. This uses the
2793functions `display-delayed-warnings' and `collapse-delayed-warnings'.
001bf877 2794
6420d28b
CY
2795** rx.el has a new `group-n' construct for explicitly numbered groups.
2796
dac86404
GM
2797** New function `make-composed-keymap' that constructs a new keymap
2798from multiple input maps. You can use this to make a keymap that
2799inherits from multiple maps, eg:
2800 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 2801
c8f6ec5c
GM
2802** New function `string-prefix-p'.
2803(This was actually added in Emacs 23.2 but was not advertised at the time.)
2804
27f7ef2f 2805** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
2806This means that the empty symbol can now be read back. Also, #: by itself
2807(when not immediately followed by a possible symbol character) stands for
2808an empty uninterned symbol.
041d709f 2809
fead402d
CY
2810** New math functions `isnan', `copysign', `frexp', `ldexp'.
2811
7d301ae6 2812** The following functions and variables are obsolete:
041d709f 2813
05f77e38
GM
2814*** `tooltip-use-echo-area' is obsolete.
2815Rather than setting this to t, disable Tooltip mode instead.
2816
041d709f
CY
2817*** buffer-substring-filters is obsolete.
2818Use `filter-buffer-substring-functions' instead.
2819
2820*** `byte-compile-disable-print-circle' is obsolete.
2821
2822*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
2823Use `post-command-hook' instead.
2824
67e729a5
CY
2825*** `font-lock-maximum-size' is obsolete.
2826
eb199145 2827\f
93e0bed6 2828* Changes in Emacs 24.1 on Non-Free Operating Systems
d53a60a6 2829
7a22e700 2830** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
2831and also when HOME is set to C:\ by default.
2832
7a22e700 2833** New configure.bat options
04779484 2834
7a22e700 2835*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 2836
7a22e700 2837*** --distfiles specifies files to be included in binary distribution.
e2574f2c 2838
7a22e700
OK
2839*** --without-gnutls disables automatic GnuTLS detection.
2840
a0d363f4 2841*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 2842
0a19a6f8 2843** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 2844
1f5e1a16
GM
2845** The Lisp function `w32-default-color-map' is now obsolete.
2846(It is only used internally in the Emacs C code.)
5430d399 2847
1f5e1a16
GM
2848** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
2849reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 2850
ad7c802c
CY
2851** On Mac OS X, dragging a file into Emacs visits the file, like on
2852other platforms, rather than inserting its contents into the buffer.
2853
05197f40 2854\f
a933dad1 2855----------------------------------------------------------------------
5b87ad55 2856This file is part of GNU Emacs.
a933dad1 2857
ab73e885 2858GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 2859it under the terms of the GNU General Public License as published by
ab73e885
GM
2860the Free Software Foundation, either version 3 of the License, or
2861(at your option) any later version.
5b87ad55
GM
2862
2863GNU Emacs is distributed in the hope that it will be useful,
2864but WITHOUT ANY WARRANTY; without even the implied warranty of
2865MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2866GNU General Public License for more details.
a933dad1 2867
5b87ad55 2868You should have received a copy of the GNU General Public License
ab73e885 2869along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 2870
05197f40 2871\f
a933dad1
DL
2872Local variables:
2873mode: outline
2874paragraph-separate: "[ \f]*$"
2875end: