* lisp/net/net-utils.el (net-utils-remove-ctrl-m-filter):
[bpt/emacs.git] / etc / NEWS
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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** Delphi mode is now called OPascal mode.
89*** All delphi-* variables and functions have been renamed to opascal-*.
90*** `delphi-newline-always-indents' is not supported any more
91use `electric-indent-mode' instead.
92*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.
93
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94** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.
95
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96** completing-read-multiple's separator can now be a regexp.
97The default separator is changed to allow surrounding spaces around the comma.
98
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99** Battery
100
101*** Battery information via the BSD `apm' utility is now supported.
102
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103** cl-lib
104
105*** New macro cl-tagbody.
106
107+++
108*** letf is now just an alias for cl-letf.
109
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110** Calc
111
112*** Calc by default now uses the Gregorian calendar for all dates, and
113uses January 1, 1 AD as its day number 1. Previously Calc used the
114Julian calendar for dates before September 14, 1752, and it used
115December 31, 1 BC as its day number 1; the new scheme is more
116consistent with Calendar's calendrical system and day numbering.
117
118*** The new variable `calc-gregorian-switch' lets you configure the
119date when Calc switches from the Julian to the Gregorian calendar.
120Nil, the default value, means to always use the Gregorian calendar.
121The value (YEAR MONTH DAY) means to start using the Gregorian calendar
122on the given date.
123
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124*** Support for ISO 8601 dates.
125
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126** Dired
127
128*** New minor mode `dired-hide-details-mode' hides details.
129
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130** ERC
131
132*** New option `erc-accidental-paste-threshold-seconds'.
133If set to a number, this can be used to avoid accidentally paste large
134amounts of data into the ERC input.
135
136** Icomplete is a bit more like IDO.
137*** key bindings to navigate through and select the completions.
138*** The icomplete-separator is customizable, and its default has changed.
139*** Removed icomplete-show-key-bindings.
140
2a43515a 141** Image mode
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142
143*** New commands `n' (`image-next-file') and `p' (`image-previous-file')
144visit the next image file and the previous image file in the same
145directory, respectively.
146
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147*** New commands to show specific frames of multi-frame images.
148`f' (`image-next-frame') and `b' (`image-previous-frame') visit the
149next or previous frame. `F' (`image-goto-frame') shows a specific frame.
150
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151---
152*** The command `image-mode-fit-frame' deletes other windows.
153When toggling, it restores the frame's previous window configuration.
154It also has an optional frame argument, which can be used by Lisp
155callers to fit the image to a frame other than the selected frame.
156
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157** Isearch
158
159*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
160and adds it to the search string.
161
5a3cbc03 162** MH-E has been updated to MH-E version 8.5.
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163See MH-E-NEWS for details.
164
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165---
166** The unrmail command converts from BABYL to mboxrd rather than mboxo.
167Customize `unrmail-mbox-format' to change this.
168
169---
170** Similarly, customize `rmail-mbox-format' to influence some minor aspects
171of how Rmail displays non-MIME messages.
172
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173+++
174** New function `ses-rename-cell' to give SES cells arbitrary names.
175
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176** trace-function was largely rewritten.
177New features include:
178- no prompting for the destination buffer, unless a prefix-arg was used.
179- additionally to prompting for a destination buffer, when a prefix-arg is
180 used, the user can enter a "context", i.e. Lisp expression whose value at the
181 time the function is entered/exited will be printed along with the function
182 name and arguments. Useful to trace the value of (current-buffer) or
183 (point) when the function is invoked.
184
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185** New command `delete-duplicate-lines' has two types of operation:
186when its arg ADJACENT is non-nil (when called interactively with C-u C-u)
187it works like the utility `uniq'. Otherwise by default it deletes
188duplicate lines everywhere in the region without regard to adjacency.
189
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190** New `cycle-spacing' command allows cycling between having just one
191space, no spaces, or reverting to the original spacing. Like
192`just-one-space' command it can handle or ignore newlines and
193leave different number of spaces.
194
aefa2ead 195** Tramp
26280467 196
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197+++
198*** New connection method "adb", which allows to access Android
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199devices by the Android Debug Bridge. The variable `tramp-adb-program'
200can be used to adapt the path of the "adb" program, if needed.
26280467 201
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202*** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
203"scpc" and "rsyncc" are discontinued. The ssh option
204"ControlMaster=auto" is set automatically in all ssh-based methods,
205when possible.
26280467 206
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207+++
208*** Handlers for `file-acl' and `set-file-acl' for remote machines
209which support POSIX ACLs.
aefa2ead 210
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211** Woman
212
213*** The commands `woman-default-faces' and `woman-monochrome-faces'
214are obsolete. Customize the `woman-* faces instead.
215
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216** Obsolete packages:
217
218*** longlines.el is obsolete; use visual-line-mode instead.
219
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220*** terminal.el is obsolete; use term.el instead.
221
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222+++
223*** yow.el is obsolete; use fortune.el or cookie1.el instead.
224
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225---
226*** The Info-edit command is obsolete. Editing Info nodes by hand
227has not been relevant for some time.
228
4f0552c2 229\f
95a32efb 230* New Modes and Packages in Emacs 24.4
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231** New nadvice.el package offering lighter-weight advice facilities.
232It is layered as:
233- add-function/remove-function which can be used to add/remove code on any
234 function-carrying place, such as process-filters or `<foo>-function' hooks.
235- advice-add/advice-remove to add/remove a piece of advice on a named function,
236 much like `defadvice' does.
237
c57b2d76 238\f
95a32efb 239* Incompatible Lisp Changes in Emacs 24.4
da03ef8a 240
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241** `read-event' does not return decoded chars in ttys any more.
242Just as was the case in Emacs-22 and before, decoding of tty input according to
243keyboard-coding-system is not performed in read-event any more. But contrary
244to that past, it is still done before input-decode-map/function-key-map/...
245
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246** Removed inhibit-local-menu-bar-menus.
247
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248** frame-local variables that affect redisplay do not work any more.
249More specifically, the redisplay does not bother to check for a frame-local
250value when looking up variables.
251
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252** nil and "unbound" are indistinguishable in symbol-function.
253`symbol-function' never signals `void-function' any more.
254`fboundp' returns non-nil if the symbol was `fset' to nil.
255
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256** `defadvice' does not honor the `freeze' flag and cannot advise
257special-forms any more.
7db1bda8 258
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259** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
260VAR was bound to nil which was not tremendously useful and just lead to
261spurious warnings about an unused var.
262
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263** The return value of `backup-buffer' has changed.
264The second argument is no longer an SELinux context, instead it is an
265alist of extended attributes as returned by the new function
266`file-extended-attributes'. The attributes can be applied to another
267file using `set-file-extended-attributes'.
268
c57b2d76 269\f
97a1cd9d 270* Lisp Changes in Emacs 24.4
57618ecf 271
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272** `dont-compile' is declared obsolete.
273
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274** Support for filesystem notifications.
275Emacs now supports notifications of filesystem changes, such as
276creation, modification, and deletion of files. This requires the
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277'inotify' API on GNU/Linux systems. On MS-Windows systems, this is
278supported for Windows XP and newer versions.
81606b10 279
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280** Changes in autorevert.el
281
282---
283*** If Emacs is compiled with file notification support, notifications
284are used instead of checking the time stamp of the files. You can
285disable this by setting the user option `auto-revert-use-notify' to
286nil. Alternatively, a regular expression of directories to be
287excluded from file notifications can be specified by
288`auto-revert-notify-exclude-dir-regexp'.
289
290---
291*** The new user option `auto-revert-remote-files' enables reversion
292of remote files when set to non-nil.
293
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294** Face changes
295
296*** The `face-spec-set' is now analogous to `setq' for face specs.
297Its third arg now accepts values specifying exactly which face spec to
298set (defface, custom, or user spec), and it directly sets the relevant
299property using the supplied face spec.
300
301*** Face specs set via Custom themes now replace the `defface' spec
302rather than inheriting from it (as do face specs set via Customize).
303
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304*** New face characteristic (supports :underline (:style wave))
305specifies whether or not the terminal can display a wavy line.
306
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307** Image API
308
309+++
310*** `image-animated-p' is now `image-multi-frame-p'.
311It returns non-nil for any image that contains multiple frames,
312whether or not it specifies a frame delay.
313
314+++
315*** When animating images that do not specify a frame delay,
316Emacs uses `image-default-frame-delay'.
317
318+++
319*** New functions `image-current-frame' and `image-show-frame' for getting
320and setting the current frame of a multi-frame image.
321
855b17af 322** time-to-seconds is not obsolete any more.
231d8498 323** New function special-form-p.
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324** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
325text-property on the first char.
326
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327** The `defalias-fset-function' property lets you catch calls to defalias
328and redirect them to your own function instead of `fset'.
329
70743157 330** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
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331When you edit DIR/FILE, Emacs normally creates a symbolic link
332DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
333is being edited. Formerly, if there was already a non-symlink file
334named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
335through DIR/.#FILE.9. These fallbacks have been removed, so that
336Emacs now no longer locks DIR/FILE in that case.
337
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338On file systems that do not support symbolic links, the lock is now a
339regular file with contents being what would have been in the symlink.
b5029e23 340
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341** The 9th element returned by `file-attributes' is now unspecified.
342Formerly, it was t if the file's gid would change if file were deleted
343and recreated. This value has been inaccurate for years on many
344platforms, and nobody seems to have noticed or cared.
345
346** The function `file-ownership-preserved-p' now has an optional
347argument GROUP which causes it check for file group too. This can be
348used in place of the 9th element of `file-attributes'.
349
350** New functions `group-gid' and `group-real-gid'.
351
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352** The 6th argument to `copy-file' has been renamed to
353`preserve-extended-attributes' as it now handles both SELinux context
354and ACL entries.
355
c57b2d76 356\f
97a1cd9d 357* Changes in Emacs 24.4 on Non-Free Operating Systems
95a32efb 358
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359+++
360** The "generate a backtrace on fatal error" feature now works on MS Windows.
361The backtrace is written to the 'emacs_backtrace.txt' file in the
362directory where Emacs was running.
363
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364+++
365** The variable `buffer-file-type' is no longer supported.
366Setting it has no effect, and %t in the mode-line format is ignored.
367Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
368modifying it has no effect.
369
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370---
371** Lock files now work on MS-Windows.
372This allows to avoid losing your edits if the same file is being
373edited in another Emacs session or by another user. See the node
374"Interlocking" in the Emacs User Manual for the details. To disable
375file locking, customize `create-lockfiles' to nil.
376
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377** Improved fullscreen support on Mac OS X.
378Both native (>= OSX 10.7) and "old style" fullscreen are supported.
379Customize `ns-use-native-fullscreen' to change style. For >= 10.7
380native is the default.
381
95a32efb 382\f
2a1e2476 383* Installation Changes in Emacs 24.3
b8df54ff 384
6bc66c10 385** The default X toolkit is now Gtk+ version 3.
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386If you don't pass `--with-x-toolkit' to configure, or if you use
387`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
388to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
d71a6517 389You can explicitly require a specific version by passing
823b2fb6 390`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
da3d2105 391
6bc66c10 392** New configure option `--enable-link-time-optimization', to utilize
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393an appropriate feature provided by GCC since version 4.5.0.
394
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395** New configure option `--without-all' to disable most of the optional
396features (image support, etc.) that are normally enabled by default.
b8df54ff 397
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398** New configure option `--enable-gcc-warnings' (for developing/debugging
399Emacs). If building with GCC, this enables compile-time checks that
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400warn/give errors about possibly-questionable C code. On a recent GNU
401system there should be no warnings; on older and on non-GNU systems
402the results may be useful to developers.
b8df54ff 403
823b2fb6 404** The configure option `--enable-use-lisp-union-type' has been
6bc66c10 405renamed to `--enable-check-lisp-object-type', as the resulting
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406Lisp_Object type no longer uses a union to implement the compile time
407check that this option enables.
408
823b2fb6 409** The configure option `--disable-maintainer-mode' has been removed,
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410as it was confusingly-named and rarely useful.
411
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412** The configure options `--program-prefix', `--program-suffix', and
413`--program-transform-name' apply to more than just the installed
414binaries. Now they also affect the man pages, icons, and the
415etc/emacs.desktop file; but not the info pages, since this would break
416links between the various manuals.
1a9c6830 417
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418** You can use `NO_BIN_LINK=t make install' to prevent the installation
419overwriting "emacs" in the installation bin/ directory with a link
6bc66c10 420to "emacs-VERSION".
823b2fb6 421
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422** Emacs uses libtinfo in preference to libncurses, if available.
423
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424** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
425/usr/pkg/lib to the linker search path. You must add them yourself if
426you want them.
427
6bc66c10 428** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
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429(from the bin and libexec directories, respectively). The former is
430no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
431
a1ed8b05 432\f
2a1e2476 433* Startup Changes in Emacs 24.3
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434
435** Emacs no longer searches for `leim-list.el' files beneath the standard
436lisp/ directory. There should not be any there anyway. If you have
823b2fb6 437been adding them there, put them somewhere else; e.g., site-lisp.
e5fcdb5e 438
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439** The `--no-site-lisp' command line option now works for Nextstep builds.
440
a1ed8b05 441\f
2a1e2476 442* Changes in Emacs 24.3
a1ed8b05 443
6bc66c10 444** Help
c89926a5 445
6bc66c10 446*** `C-h f' (`describe-function') can now perform autoloading.
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447When this command is called for an autoloaded function whose docstring
448contains a key substitution construct, that function's library is
449automatically loaded, so that the documentation can be shown
450correctly. To disable this, set `help-enable-auto-load' to nil.
451
452*** `C-h f' now reports previously-autoloaded functions as "autoloaded",
453even after their associated libraries have been loaded (and the
454autoloads have been redefined as functions).
455
6bc66c10 456** ImageMagick
cd996018 457
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458*** Images displayed via ImageMagick now support transparency and the
459:background image specification property.
cd996018 460
6bc66c10 461*** When available, ImageMagick support is automatically enabled.
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462It is no longer necessary to call `imagemagick-register-types'
463explicitly to install ImageMagick image types; that function is called
7d806bfe 464automatically at startup, or when customizing an imagemagick- option.
2f940384 465
c505aaeb 466*** Setting `imagemagick-types-inhibit' to t now disables the use of
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467ImageMagick to view images. (You must call `imagemagick-register-types'
468afterwards if you do not use customize to change this.)
2f940384 469
7afbaca4 470*** The new variable `imagemagick-enabled-types' also affects which
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471ImageMagick types are treated as images. The function
472`imagemagick-filter-types' returns the list of types that will be
473treated as images.
c505aaeb 474
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475** Minibuffer
476
477*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
478next and previous path separator, respectively.
c505aaeb 479
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480*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
481in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
482non-nil before enabling the mode.
483
484** Mode line
485
486*** New option `mode-line-default-help-echo' specifies the help text
487(shown in a tooltip or in the echo area) for any part of the mode line
488that does not have its own specialized help text.
489
490*** You can now click mouse-3 in the coding system indicator to invoke
491`set-buffer-file-coding-system'.
492
493** Server and client
2f940384 494
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495*** emacsclient now obeys string values for `initial-buffer-choice',
496if it is told to open a new frame without specifying any file to visit
497or expression to evaluate.
db80bdc8 498
f938eda9 499*** New option `server-auth-key' specifies a shared server key.
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500
501** Emacs now generates backtraces on fatal errors.
502On encountering a fatal error, Emacs now outputs a textual description
503of the fatal signal, and a short backtrace on platforms like glibc
5248293f 504that support backtraces.
2e2d2a13 505
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506** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
507This minor mode replaces `toggle-read-only', which is now obsolete.
508
509** Most `y-or-n' prompts now allow you to scroll the selected window.
510Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
511respectively, without exiting from the prompt.
512
513** In the Package Menu, newly-available packages are listed as "new",
514and sorted above the other "available" packages by default.
515
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516** If your Emacs was built from a bzr checkout, the new variable
517`emacs-bzr-version' contains information about the bzr revision used.
de6ff46d 518
6bc66c10 519** New option `create-lockfiles' specifies usage of lockfiles.
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520It defaults to t. Changing it to nil inhibits the creation of lock
521files (use this with caution).
dc0f75c8 522
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523** New option `enable-remote-dir-locals', if non-nil, allows directory-local
524variables on remote hosts.
21ffb35a 525
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526** The entry for PCL-CVS has been removed from the Tools menu.
527The PCL-CVS commands are still available via the keyboard.
528
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529** Using "unibyte: t" in Lisp source files is obsolete.
530Use "coding: raw-text" instead.
531
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532** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
533has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
534The previous binding, introduced in Emacs 24.1, was a mistake, because
535`C-c LETTER' bindings are reserved for user customizations.
536
6bc66c10 537** Internationalization
2f940384 538
f938eda9 539*** New language environment: Persian.
2f940384 540
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541*** New input method `vietnamese-vni'.
542
6bc66c10 543** Nextstep (GNUstep / Mac OS X) port
2f940384 544
823b2fb6 545*** Support for fullscreen and the frame parameter fullscreen.
2f940384 546
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547*** A file dialog is used for open/save operations initiated from the
548menu/toolbar.
549
a1ed8b05 550\f
2a1e2476 551* Editing Changes in Emacs 24.3
c25df26e 552
6bc66c10 553** Search and Replace
d39d3c8e 554
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555*** Non-regexp Isearch now performs "lax" space matching.
556Each sequence of spaces in the supplied search string may match any
557sequence of one or more whitespace characters, as specified by the
558variable `search-whitespace-regexp'. (This variable is also used by a
823b2fb6 559similar existing feature for regexp Isearch.)
2f940384 560
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561*** New Isearch command `M-s SPC' toggles lax space matching.
562This applies to both ordinary and regexp Isearch.
2f940384 563
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564*** New option `replace-lax-whitespace'.
565If non-nil, `query-replace' uses flexible whitespace matching too.
566The default is nil.
2f940384 567
b9cb2387
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568*** Global `M-s _' starts a symbol (identifier) incremental search,
569and `M-s _' in Isearch toggles symbol search mode.
570`M-s c' in Isearch toggles search case-sensitivity.
571
6bc66c10 572** Navigation commands
48de8b12 573
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574*** New binding `M-g c' for `goto-char'.
575
576*** New binding `M-g TAB' for `move-to-column'.
577
578*** `M-g TAB' (`move-to-column') prompts for a column number if called
579interactively with no prefix arg. Previously, it moved to column 1.
580
581** New option `yank-handled-properties' allows processing of text
582properties on yanked text, in ways that are more general than just
583removing them (as is done by `yank-excluded-properties').
48de8b12 584
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585** New option `delete-trailing-lines' specifies whether
586M-x delete-trailing-whitespace should delete trailing lines at the end
587of the buffer. It defaults to t.
588
f938eda9 589** `C-u M-=' now counts lines/words/characters in the entire buffer.
826b3235 590
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591** `C-x 8 RET' is now bound to `insert-char', which is now a command.
592`ucs-insert' is now an obsolete alias for `insert-char'.
b2459884 593
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594** The `z' key no longer has a binding in most special modes.
595It used to be bound to `kill-this-buffer', but `z' is too easy to
596accidentally type.
f938eda9 597
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598** New command `C-x r M-w' (`copy-rectangle-as-kill').
599It copies the region-rectangle as the last rectangle kill.
f938eda9 600
6bc66c10 601** Registers
f938eda9 602
823b2fb6 603*** `C-x r +' is now overloaded to invoke `append-to-register'.
f938eda9 604
f938eda9 605*** New option `register-separator' specifies the register containing
823b2fb6
GM
606the text to put between collected texts for use with
607M-x append-to-register and M-x prepend-to-register.
f1f4dba0 608
a1ed8b05 609\f
2a1e2476 610* Changes in Specialized Modes and Packages in Emacs 24.3
ae4969c2 611
6bc66c10 612** Common Lisp emulation (CL)
f938eda9 613
89660017 614*** CL's main entry is now (require 'cl-lib).
823b2fb6
GM
615`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
616i.e., all its definitions have the "cl-" prefix (and internal definitions
617use the "cl--" prefix).
7c1898a7 618
823b2fb6
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619If `cl' provided a feature under the name `foo', then `cl-lib'
620provides it under the name `cl-foo' instead; with the exceptions of the
621few `cl' definitions that had to use `foo*' to avoid conflicts with
622pre-existing Elisp entities. These have been renamed to `cl-foo'
623rather than `cl-foo*'.
7c1898a7 624
92246540 625The old `cl' is now deprecated and is mainly just a bunch of aliases that
823b2fb6 626provide the old, non-prefixed names. Some exceptions are listed below:
7c1898a7 627
89660017
SM
628*** `cl-flet' is not like `flet' (which is deprecated).
629Instead it obeys the behavior of Common-Lisp's `flet'.
e8693c96
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630In particular, in cl-flet function definitions are lexically scoped,
631whereas in flet the scoping is dynamic.
89660017
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632
633*** `cl-labels' is slightly different from `labels'.
823b2fb6
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634The difference is that it relies on the `lexical-binding' machinery
635(as opposed to the `lexical-let' machinery used previously) to capture
636definitions in closures, so such closures will only work if `lexical-binding'
637is in use.
89660017 638
f94b04fc 639*** `cl-letf' is not exactly like `letf'.
4ddedf94
GM
640The only difference is in details that relate to some deprecated usage
641of `symbol-function' in place forms.
f94b04fc 642
89660017 643*** `progv' was rewritten to use the `let' machinery.
823b2fb6
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644A side effect is that variables without corresponding values are bound
645to nil rather than being made unbound.
89660017 646
9512f820
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647*** The following methods of extending `setf' are obsolete
648(use features from gv.el instead):
649`define-modify-macro' (use `gv-letplace')
031b2ea7
GM
650`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
651`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
2b4da3ff 652`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
f94b04fc 653
6bc66c10 654** Diff mode
f938eda9 655
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656*** Changes are now highlighted using the same color scheme as in
657modern VCSes. Deletions are displayed in red (new faces
658`diff-refine-removed' and `smerge-refined-removed', and new definition
659of `diff-removed'), insertions in green (new faces `diff-refine-added'
660and `smerge-refined-added', and new definition of `diff-added').
f938eda9 661
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662*** The variable `diff-use-changed-face' defines whether to use the
663face `diff-changed', or `diff-removed' and `diff-added' to highlight
664changes in context diffs.
2f940384 665
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666*** The new command `diff-delete-trailing-whitespace' removes trailing
667whitespace introduced by a diff.
f938eda9 668
6bc66c10
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669** Ediff now uses the same color scheme as Diff mode.
670
671** Python mode
672
673A new version of python.el, which provides several new features, including:
674per-buffer shells, better indentation, Python 3 support, and improved
675shell-interaction compatible with iPython (and virtually any other
676text based shell).
677
678*** Some user options have been replaced/renamed, including (old -> new):
679**** python-indent -> python-indent-offset
680**** python-guess-indent -> python-indent-guess-indent-offset
681**** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
682**** python-use-skeletons -> python-skeleton-autoinsert
683
684*** Some user options have been removed, including:
685
686**** `python-indent-string-contents': Strings are never indented.
687
688**** `python-honour-comment-indentation':
d5b1b1aa 689Comments are always considered as indentation markers.
6bc66c10
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690
691**** `python-continuation-offset': Indentation is automatically
692calculated in a pep8 compliant way depending on the context.
693
694**** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
695Have no direct mapping as the shell interaction is completely different.
696
697**** `python-python-command', `python-jython-command':
698Replaced by `python-shell-interpreter'.
699
700**** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
701`python-pdbtrack-minor-mode-string', `python-source-modes':
702No longer relevant.
703
704*** Some commands have been replaced (old -> new):
705**** python-insert-class -> python-skeleton-class
706**** python-insert-def -> python-skeleton-def
707**** python-insert-for -> python-skeleton-for
708**** python-insert-if -> python-skeleton-if
709**** python-insert-try/except -> python-skeleton-try
710**** python-insert-try/finally -> python-skeleton-try
711**** python-insert-while -> python-skeleton-while
712**** python-find-function -> python-nav-jump-to-defun
713**** python-next-statement -> python-nav-forward-sentence
714**** python-previous-statement -> python-nav-backward-sentence
715**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
716**** python-end-of-defun-function -> python-nav-end-of-defun
717**** python-send-buffer -> python-shell-send-buffer
718**** python-send-defun -> python-shell-send-defun
719**** python-send-region -> python-shell-send-region
720**** python-send-region-and-go -> emulate with python-shell-send-region
721and python-shell-switch-to-shell
722**** python-send-string -> python-shell-send-string
723**** python-switch-to-python -> python-shell-switch-to-shell
724**** python-describe-symbol -> python-eldoc-at-point
e76f0800 725
f938eda9
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726** D-Bus
727
f938eda9
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728*** New variables `dbus-compiled-version' and `dbus-runtime-version'.
729
f938eda9
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730*** The D-Bus object manager interface is implemented.
731
f938eda9
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732*** Variables of type :(u)int32 and :(u)int64 accept floating points,
733if their value does not fit into Emacs's integer range.
734
823b2fb6
GM
735*** The function `dbus-call-method' is now non-blocking.
736It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
f938eda9 737
823b2fb6 738*** Signals can also be sent as unicast messages.
f938eda9 739
f938eda9 740*** The argument list of `dbus-register-signal' has been extended,
6bc66c10 741according to the new match rule types of D-Bus.
f938eda9 742
f938eda9
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743*** `dbus-init-bus' supports private connections.
744
f938eda9
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745*** There is a new function `dbus-setenv'.
746
6bc66c10
GM
747** `desktop-path' no longer includes the "." directory.
748Desktop files are now located in ~/.emacs.d by default.
f938eda9
CY
749
750** Dired
2f940384 751
f938eda9
CY
752*** `dired-do-async-shell-command' executes each file sequentially
753if the command ends in `;' (when operating on multiple files).
754Otherwise, it executes the command on each file in parallel.
2f940384 755
823b2fb6
GM
756*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
757`dired-do-chown', and `dired-do-touch' yanks the attributes of the
f938eda9 758file at point.
2f940384 759
f938eda9 760*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
823b2fb6 761`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
f938eda9 762mark/unmark/flag all files in the active region.
2f940384 763
f938eda9
CY
764*** The minibuffer default for `=' (`dired-diff) has changed.
765It is now the backup file for the file at point, if one exists.
766In Transient Mark mode the default is the file at the active mark.
2f940384 767
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768*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
769The global binding for `M-=', `count-words-region' is in effect.
770
02969baf
GM
771** ERC
772
6e5e9b70
GM
773*** New module "notifications", which can send a notification when you
774receive a private message or your nickname is mentioned.
02969baf
GM
775
776*** ERC will look up server/channel names via auth-source and use any
777channel keys found.
f938eda9 778
274f5de6
GM
779*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
780only applies to messages sent by lurkers.
f925b109 781
6bc66c10 782** reStructuredText mode
f938eda9 783
6bc66c10
GM
784*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
785fontification, comment handling, and customization have all been revised
786and improved.
f938eda9 787
6bc66c10 788*** Support for `imenu' and `which-function-mode'.
f938eda9 789
6bc66c10
GM
790*** The reStructuredText syntax is more closely covered.
791Sphinx support has been improved.
f938eda9 792
6bc66c10 793*** `rst-insert-list' inserts new list or continues existing lists.
f938eda9 794
6bc66c10 795*** A negative prefix argument always works for `rst-adjust'.
f938eda9 796
6bc66c10 797*** The window configuration is reset after displaying a TOC.
bc7be45d 798
6bc66c10 799*** The constant `rst-version' describes the rst.el package version.
358c19d9 800
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801** Ruby mode
802
803*** Support for percent literals and recognition of regular expressions
804in method calls without parentheses with more methods, including Cucumber
805steps definitions.
806
807*** Improved syntax highlighting and indentation.
808
809*** New command `ruby-toggle-block', bound to `C-c {'.
810
811*** Some non-standard keybindings/commands have been removed:
812
813**** `ruby-electric-brace'; use `electric-indent-mode' instead.
814
815**** `ruby-mark-defun'; use `mark-defun'.
816
817**** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
818appropriate settings for the variables `beginning-of-defun-function'
819and `end-of-defun-function'.
820
821**** Non-standard keybindings for `backward-kill-word', `comment-region',
822`reindent-then-newline-and-indent' and `newline' have been removed.
823
6bc66c10 824** Shell Script mode
40d8bcb8 825
6bc66c10 826*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
40d8bcb8 827
6bc66c10 828*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
40d8bcb8 829
6bc66c10 830*** `sh-use-smie' lets you choose a new indentation and navigation code.
40d8bcb8 831
6bc66c10 832** VHDL mode
40d8bcb8 833
6bc66c10 834*** The free software compiler GHDL is supported (and now the default).
40d8bcb8 835
6bc66c10 836*** Support for the VHDL-AMS packages has been added/updated.
40d8bcb8 837
6bc66c10 838*** Updated to the 2002 revision of the VHDL standard.
40d8bcb8 839
6bc66c10 840*** Accepts \r and \f as whitespace.
40d8bcb8 841
6bc66c10 842** Apropos
40d8bcb8 843
6bc66c10
GM
844*** The faces used by Apropos are now directly customizable.
845These faces are named `apropos-symbol', `apropos-keybinding', and so on;
846see the `apropos' Custom group for details.
d13c8be6 847
6bc66c10
GM
848*** The old options whose values specified faces to use have been removed
849(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
d13c8be6 850
6bc66c10 851** Buffer Menu
d13c8be6 852
6bc66c10 853*** This package has been rewritten to use Tabulated List mode.
d13c8be6 854
6bc66c10
GM
855*** Option `Buffer-menu-buffer+size-width' is now obsolete.
856Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
d13c8be6 857
86e100a6
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858** Calc
859
860*** Algebraic simplification mode is now the default.
861To restrict to the limited simplifications given by the former
862default simplification mode, use `m I'.
863
6bc66c10 864** Calendar
d13c8be6 865
6bc66c10
GM
866*** You can customize the header text that appears above each calendar month.
867See the variable `calendar-month-header'.
d13c8be6 868
6bc66c10 869*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
ee97deee 870
6bc66c10
GM
871*** The calendars produced by cal-html include holidays.
872Customize `cal-html-holidays' to change this.
8b0823d6 873
0058cae2
GM
874** CEDET
875
876*** The major modes from the parser generators "Bovine" and "Wisent"
877are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
878are in `auto-mode-alist', and the corresponding manuals are included.
879
880*** EDE
881
882**** Menu support for the "Configuration" feature. This allows users to
883choose the active configuration (such as debug or install) from the menu.
884
885**** New command `ede-set' to interactively set project-local variables.
886
887**** Support for compiling, debugging, and running in "generic" projects.
888
889**** Autoconf editing support for M4 macros with complex arguments.
890
891**** Compilation support for the "linux" project type.
892
893**** "simple" projects have been removed; use "generic" projects instead.
894
895*** Semantic
896
897**** Support for parsing #include statements inside a namespace in C/C++.
898
899**** Improved support for 'extern "C"' declarations in C/C++.
900
901**** The ability to ignore more common special C/C++ preprocessor symbols,
902such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
903If available, include cdefs.h as an additional source of preprocessor symbols.
904
905**** Improved C/C++ function pointer parsing.
906
907**** In Python, support for converting imports to include file names.
908
909**** Ability to dynamically determine the Python load path.
910
911**** Support for the Python 'WITH' and 'AT' keywords.
912
913**** Improved tooltip completion.
914
915*** SRecode
916
917**** The SRecode manual is now included.
918
919**** Tag generation supports constructor/destructor settings and system
920include differentiation.
921
922**** Addition of 'Framework' support: Frameworks are specified when a
923particular kind of library (such as Android) is needed in a common language
924mode (like Java).
925
926**** Support for nested templates and let variables override based on priority.
927
928**** Support for merging tables from multiple related modes, such as
929default -> c++ -> arduino.
930
6bc66c10 931** Compile has a new option `compilation-always-kill'.
42917e79 932
6bc66c10 933** Customize
35d98877 934
6bc66c10 935*** `custom-reset-button-menu' now defaults to t.
35d98877 936
6bc66c10
GM
937*** Non-option variables are never matched in `customize-apropos' and
938`customize-apropos-options' (i.e., the prefix argument does nothing for
939these commands now).
782fbf2a 940
f938eda9 941** Term
782fbf2a 942
823b2fb6
GM
943*** The variables `term-default-fg-color' and `term-default-bg-color'
944are now deprecated in favor of the customizable face `term'.
fc72b15c 945
02969baf
GM
946*** You can customize how to display ANSI terminal colors and styles
947by customizing the corresponding `term-color-<COLOR>',
948`term-color-underline' and `term-color-bold' faces.
cf20dee0 949
05ecb497 950** Tramp
2f940384 951
02969baf 952*** The syntax has been extended in order to allow ad-hoc proxy definitions.
05ecb497 953
823b2fb6 954*** Remote processes are now also supported on remote MS-Windows hosts.
05ecb497 955
ce7b18ec 956** URL
2f940384 957
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958*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
959Previously, this slot stored semicolon-separated attribute-value pairs
960appended to some imap URLs, but this is not compatible with RFC 3986.
823b2fb6 961So now the `filename' slot stores the entire path and query components,
ce7b18ec 962and the `attributes' slot is always nil.
2f940384 963
ce7b18ec
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964*** New function `url-encode-url' for encoding a URI string.
965The `url-retrieve' function now uses this to encode its URL argument,
966in case that is not properly encoded.
967
6bc66c10
GM
968** notifications.el supports now version 1.2 of the Notifications API.
969The function `notifications-get-capabilities' returns the supported
970server properties.
f938eda9 971
6bc66c10
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972** Flymake uses fringe bitmaps to indicate errors and warnings.
973See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
974`flymake-warning-bitmap'.
f938eda9 975
6bc66c10
GM
976** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
977specifying URL types that should be converted to remote file names at
978the FFAP prompt. The default is now '("ftp").
f938eda9 979
6bc66c10
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980** New Ibuffer `derived-mode' filter, bound to `/ M'.
981The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
f938eda9 982
6bc66c10
GM
983** New option `mouse-avoidance-banish-position' specifies where the
984`banish' mouse avoidance setting moves the mouse.
ce7b18ec 985
6bc66c10
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986** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
987closing brackets to be aligned with the line of the opening bracket.
f938eda9 988
6bc66c10 989** In Proced mode, new command `proced-renice' renices marked processes.
f938eda9 990
6bc66c10
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991** New option `async-shell-command-buffer' specifies the buffer to use
992for a new asynchronous `shell-command' when the default output buffer
993`*Async Shell Command*' is already in use.
f938eda9 994
6bc66c10
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995** SQL mode has a new option `sql-db2-escape-newlines'.
996If non-nil, newlines sent to the command interpreter will be escaped
997by a backslash. The default does not escape the newlines and assumes
998that the sql statement will be terminated by a semicolon.
f938eda9 999
6bc66c10
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1000** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1001(and modes that derive from it), sorts the column at point, or the Nth
1002column if a numeric prefix argument is given.
f938eda9 1003
02969baf 1004** `which-func-modes' now defaults to t, so Which Function mode, when
05b621a6 1005enabled, applies to all applicable major modes.
f938eda9 1006
6bc66c10 1007** `winner-mode-hook' now runs when the mode is disabled, as well as when
823b2fb6 1008it is enabled.
f938eda9 1009
6bc66c10
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1010** Follow mode no longer works by using advice.
1011The option `follow-intercept-processes' has been removed.
1012
1013** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
f938eda9 1014
d1069532
SM
1015** Hooks renamed to avoid obsolete "-hooks" suffix:
1016*** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1017*** semantic-change-hooks -> semantic-change-functions
1018*** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1019*** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1020*** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1021*** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1022*** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1023*** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1024*** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1025*** rcirc-activity-hooks -> rcirc-activity-functions
1026*** rcirc-print-hooks -> rcirc-print-functions
1027*** dbus-event-error-hooks -> dbus-event-error-functions
1028*** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1029*** checkdoc-style-hooks -> checkdoc-style-functions
1030*** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1031*** archive-extract-hooks -> archive-extract-hook
1032*** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1033*** hfy-post-html-hooks -> hfy-post-html-hook
1034*** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1035*** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1036*** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1037*** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
f938eda9 1038
6bc66c10 1039** Obsolete packages
2f940384 1040
797e6e88
SM
1041*** assoc.el
1042In most cases, assoc+member+push+delq work just as well.
1043And in any case it's just a terrible package: ugly semantics, terrible
1044inefficiency, and not namespace-clean.
3c74813a 1045*** bruce.el
b4617547 1046*** cust-print.el
daed4003 1047*** ledit.el
82f289a4 1048*** mailpost.el
d57de7fe 1049*** mouse-sel.el
3c74813a 1050*** patcomp.el
1a9c6830 1051
a1ed8b05 1052\f
2a1e2476 1053* Incompatible Lisp Changes in Emacs 24.3
b4d3bc10 1054
6bc66c10
GM
1055** Docstrings starting with `*' no longer indicate user options.
1056Only variables defined using `defcustom' are considered user options.
1057The function `user-variable-p' is now an obsolete alias for
1058`custom-variable-p'.
090cf9db 1059
6bc66c10
GM
1060** The return values of `defalias', `defun' and `defmacro' have changed,
1061and are now undefined. For backwards compatibility, `defun' and
1062`defmacro' currently return the name of the newly defined
1063function/macro, but this should not be relied upon.
090cf9db 1064
823b2fb6
GM
1065** `random' by default now returns a different random sequence in
1066every Emacs run. Use `(random S)', where S is a string, to set the
0e23ef9d
PE
1067random seed to a value based on S, in order to get a repeatable
1068sequence in later calls.
1069
d32e47af
LM
1070** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1071that substring is inserted literally even if the LITERAL arg is
1072non-nil, instead of causing an error to be signaled.
1073
2cec368c
MR
1074** `select-window' now always makes the window's buffer current.
1075It does so even if the window was selected before.
1076
6bc66c10
GM
1077** The function `x-select-font' can return a font spec, instead of a
1078font name as a string. Whether it returns a font spec or a font name
1079depends on the graphical library.
bbf908bc 1080
eeddc531
CY
1081** `face-spec-set' no longer sets frame-specific attributes when the
1082third argument is a frame (that usage was obsolete since Emacs 22.2).
1083
6bc66c10 1084** `set-buffer-multibyte' now signals an error in narrowed buffers.
a59d531e 1085
ab7f1c43
GM
1086** The CL package's `get-setf-method' function no longer exists.
1087Generalized variables are now part of core Emacs Lisp, and implemented
1088differently to the way cl.el used to do it. It is not possible to
1089define a compatible replacement for `get-setf-method'. See the file
1090gv.el for internal details of the new implementation.
1091
6bc66c10
GM
1092** The arguments of `dbus-register-signal' are no longer just strings,
1093but keywords or keyword-string pairs. The old argument list will
1094still be supported for Emacs 24.x.
72b255c7 1095
6bc66c10 1096** Miscellaneous name changes
823b2fb6
GM
1097Some Lisp symbols have been renamed to correct their spelling,
1098or to be more consistent with standard Emacs terminology.
72b255c7 1099
72b255c7 1100*** Renamed functions
72b255c7
PE
1101**** hangul-input-method-inactivate -> hangul-input-method-deactivate
1102**** inactivate-input-method -> deactivate-input-method
1103**** quail-inactivate -> quail-deactivate
1104**** robin-inactivate -> robin-deactivate
1105**** viper-inactivate-input-method -> viper-deactivate-input-method
1106**** viper-inactivate-input-method-action ->
1107 viper-deactivate-input-method-action
1108**** ucs-input-inactivate -> ucs-input-deactivate
1109
1110*** Renamed hooks
1111The old hooks are still supported for backward compatibility, but they
1112are deprecated and will be removed eventually.
72b255c7
PE
1113**** input-method-inactivate-hook -> input-method-deactivate-hook
1114**** robin-inactivate-hook -> robin-deactivate-hook
1115**** quail-inactivate-hook -> quail-deactivate-hook
1116
6bc66c10 1117*** Renamed variables
72b255c7
PE
1118**** follow-deactive-menu -> follow-inactive-menu
1119**** inactivate-current-input-method-function ->
1120 deactivate-current-input-method-function
1121
02969baf
GM
1122** Some obsolete functions, variables, and faces have been removed:
1123*** `last-input-char', `last-command-char', `unread-command-char'
78f3273a
CY
1124*** `facemenu-unlisted-faces'
1125*** `rmail-decode-mime-charset'
a5f2b6ec
CY
1126*** `iswitchb-read-buffer'
1127*** `sc-version', `sc-submit-bug-report'
1128*** `set-char-table-default'
02969baf 1129*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
a5f2b6ec 1130*** `compile-internal'
02969baf 1131*** `modeline'
59f7af81 1132*** `mode-line-inverse-video'
02969baf 1133*** `follow-mode-off-hook'
a5f2b6ec 1134*** `cvs-commit-buffer-require-final-newline'
63820c5c 1135(use `log-edit-require-final-newline' instead)
a5f2b6ec
CY
1136*** `cvs-changelog-full-paragraphs'
1137(use `log-edit-changelog-full-paragraphs' instead)
1138*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1139*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1140*** `vc-master-templates' (use `vc-handled-backends' instead)
1141*** `vc-checkout-carefully'
78f3273a 1142
a1ed8b05 1143\f
93e0bed6 1144* Lisp Changes in Emacs 24.3
ef24141c 1145
2ee3d7f0 1146** CL-style generalized variables are now in core Elisp.
f938eda9 1147`setf' is autoloaded; `push' and `pop' accept generalized variables.
ebdbfb95
GM
1148You can define your own generalized variables using `gv-define-simple-setter',
1149`gv-define-setter', etc.
2ee3d7f0 1150
6bc66c10
GM
1151** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1152This can significantly speed up execution of non-byte-compiled code,
1153but can also bump into previously unnoticed cyclic dependencies.
1154These are generally harmless: they will simply cause the macro calls
1155to be left for later expansion (as before), but will result in a
1156warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1157You may wish to restructure your code so this does not happen.
1158
1159** New sampling-based Elisp profiler.
1160Try M-x profiler-start, do some work, and then call M-x profiler-report.
1161When finished, use M-x profiler-stop. The sampling rate can be based on
1162CPU time or memory allocations.
1163
500fcedc
SM
1164** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1165The interpretation of the DECLS is determined by `defun-declarations-alist'.
1166
6bc66c10
GM
1167** New macros `setq-local' and `defvar-local'.
1168
1169** Face underlining can now use a wave.
2f940384 1170
6bc66c10 1171** `read-regexp' has a new argument HISTORY; the first argument PROMPT
cd996018 1172of `read-regexp' accepts a string ending with a colon and space, and its
823b2fb6 1173second argument DEFAULTS can be a list of strings accessible via `M-n'
cd996018
CY
1174in the minibuffer ahead of other hard-coded useful regexp-related values.
1175More commands use `read-regexp' now to read their regexp arguments.
1176
f938eda9 1177** Completion
500fcedc 1178
f938eda9
CY
1179*** New function `completion-table-with-quoting' to handle completion
1180in the presence of quoting, such as file completion in shell buffers.
f95e9344 1181
f938eda9
CY
1182*** New function `completion-table-subvert' to use an existing completion
1183table, but with a different prefix.
1184
6bc66c10 1185** Debugger
f95e9344 1186
f938eda9
CY
1187*** New error type and new function `user-error'.
1188These do not trigger the debugger.
f95e9344 1189
57fc0fee
GM
1190*** New option `debugger-bury-or-kill', saying what to do with the
1191debugger buffer when exiting debug.
45b82ad0
SM
1192
1193*** Set `debug-on-message' to enter the debugger when a certain
1194message is displayed in the echo area. This can be useful when trying
1195to work out which code is doing something.
2f940384 1196
45b82ad0
SM
1197*** New var `inhibit-debugger', automatically set to prevent accidental
1198recursive invocations.
fa2bcf43 1199
6bc66c10 1200** Window handling
2f940384 1201
6bc66c10
GM
1202*** New command `fit-frame-to-buffer' adjusts the frame height to
1203fit the contents.
2f940384 1204
6bc66c10
GM
1205*** The command `fit-window-to-buffer' can adjust the frame height
1206if the new option `fit-frame-to-buffer' is non-nil.
8e17c9ba 1207
7fe37cfc
GM
1208*** New macro `with-temp-buffer-window', similar to
1209`with-output-to-temp-buffer'.
fa2bcf43 1210
8e17c9ba
MR
1211*** `temp-buffer-resize-mode' no longer resizes windows that have been
1212reused.
c5e28e39 1213
823b2fb6 1214*** New option `switch-to-buffer-preserve-window-point' to restore a
43bcfda6 1215window's point when switching buffers.
7c82753d 1216
6bc66c10
GM
1217*** New display action alist entries `window-height' and `window-width'
1218specify the size of new windows created by `display-buffer'.
1219
1220*** New display action alist entry `pop-up-frame-parameters', if
1221non-nil, specifies frame parameters to give any newly-created frame.
7c82753d 1222
fa2bcf43
MR
1223*** New display action alist entry `inhibit-switch-frame', if non-nil,
1224tells display action functions to avoid changing which frame is
1225selected.
2f940384 1226
fa2bcf43
MR
1227*** New display action alist entry `previous-window', if non-nil,
1228specifies window to reuse in `display-buffer-in-previous-window'.
2f940384 1229
6bc66c10
GM
1230*** New display action functions `display-buffer-below-selected',
1231and `display-buffer-in-previous-window'.
1232
1233*** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1234now accept a third argument to avoid choosing the selected window.
1235
1236*** Additional values recognized for option `window-combination-limit'.
5938d519 1237
77f1f99c
CY
1238*** The following variables are obsolete, as they can be replaced by
1239appropriate entries in the `display-buffer-alist' function introduced
1240in Emacs 24.1:
823b2fb6 1241**** `dired-shrink-to-fit'
77f1f99c 1242**** `display-buffer-reuse-frames'
823b2fb6 1243**** `display-buffer-function'
77f1f99c 1244**** `special-display-buffer-names'
823b2fb6 1245**** `special-display-frame-alist'
77f1f99c 1246**** `special-display-function'
823b2fb6 1247**** `special-display-regexps'
77f1f99c 1248
ab0fa4e4 1249** Time
2f940384 1250
ab0fa4e4
PE
1251*** `current-time-string' no longer requires that its argument's year
1252must be in the range 1000..9999. It now works with any year supported
1253by the underlying C implementation.
2f940384 1254
f938eda9
CY
1255*** `current-time' now returns extended-format time stamps
1256(HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1257PSEC is typically a multiple of 1000 on current machines. Other
823b2fb6
GM
1258functions that use this format, such as `file-attributes' and
1259`format-time-string', have been changed accordingly. Old-format time
f938eda9 1260stamps are still accepted.
2f940384 1261
823b2fb6 1262*** The format of timers in `timer-list' and `timer-idle-list' is now
f938eda9
CY
1263[TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1264The PSECS slot is new, and uses picosecond resolution. It can be
823b2fb6 1265accessed via the new `timer--psecs' accessor.
2f940384 1266
c4132fd4
PE
1267*** Last-modified time stamps in undo lists now are of the form
1268(t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1269
0058cae2
GM
1270** EIEIO
1271
1272*** Improved security when handling persistent objects:
1273
1274**** `eieio-persistent-read' now features optional arguments for specifying
1275the class to load, as well as a flag stating whether subclasses are allowed;
1276if provided, other classes will be rejected by the reader. For
1277compatibility with existing code, if the class is omitted only a
1278warning is issued.
1279
1280**** New specialized reader for pulling in classes and signaling errors
1281without evaluation of suspicious code.
1282
1283**** All slots that contain objects must have a :type. Slots with lists
1284of objects must use a new type predicate for a list of an object type.
1285
1286*** Support for `find-function' and similar utilities, through the addition
1287of filename support to generated symbols.
1288
f938eda9 1289** Floating point functions now always return special values like NaN,
823b2fb6 1290instead of signaling errors, if given invalid args; e.g., (log -1.0).
f938eda9
CY
1291Previously, they returned NaNs on some platforms but signaled errors
1292on others. The affected functions are acos, asin, tan, exp, expt,
1293log, log10, sqrt, and mod.
1294
6bc66c10 1295** New fringe bitmap `exclamation-mark'.
f938eda9 1296
6bc66c10
GM
1297** Miscellaneous changes to special forms and macros
1298
1299*** `defun' and `defmacro' are now macros rather than special forms.
1300
1301*** `kbd' is now a function rather than a macro.
1302
1303** Miscellaneous new functions
1304
1305*** `set-temporary-overlay-map' sets up a temporary keymap that
1306takes precedence over most other maps for a short while (normally one key).
f938eda9 1307
847a0561 1308*** `autoloadp' tests if its argument is an autoloaded object.
2f940384 1309
847a0561 1310*** `autoload-do-load' performs the autoloading operation.
2f940384 1311
f938eda9 1312*** `buffer-narrowed-p' tests if the buffer is narrowed.
2f940384 1313
f938eda9 1314*** `file-name-base' returns a file name sans directory and extension.
2f940384 1315
f938eda9 1316*** `function-get' fetches a function property, following aliases.
c990426a 1317
f938eda9 1318*** `posnp' tests if an object is a `posn'.
f938eda9 1319
f938eda9 1320*** `system-users' returns the user names on the system.
547d6865 1321
f938eda9 1322*** `system-groups' returns the group names on the system.
f938eda9 1323
f938eda9 1324*** `tty-top-frame' returns the topmost frame of a text terminal.
c990426a 1325
f938eda9 1326** The following functions and variables are obsolete:
847a0561 1327*** `automount-dir-prefix' (use `directory-abbrev-alist')
f938eda9 1328*** `buffer-has-markers-at'
1a9c6830 1329*** `macro-declaration-function' (use `macro-declarations-alist')
847a0561 1330*** `window-system-version' (provides no useful information)
93cacb6d 1331*** `dired-pop-to-buffer' (use `dired-mark-pop-up')
0e2ae83d 1332*** `query-replace-interactive'
49238e7f 1333*** `font-list-limit' (has had no effect since Emacs < 23)
86aa551c 1334
adce950d 1335\f
93e0bed6 1336* Changes in Emacs 24.3 on Non-Free Operating Systems
9078ead6 1337
4e98ad15 1338** Cygwin builds can use the native MS Windows user interface.
823b2fb6 1339Pass `--with-w32' to configure. The default remains the X11 interface.
53a63be6 1340
1a9c6830 1341** Two new functions are available in Cygwin builds:
6e9f7997
DC
1342`cygwin-convert-file-name-from-windows' and
1343`cygwin-convert-file-name-to-windows'. These functions allow Lisp
1344code to access the Cygwin file-name mapping machinery to convert
1345between Cygwin and Windows-native file and directory names.
de6e3a60 1346
4e98ad15 1347** When invoked with the -nw switch to run on the Windows text-mode terminal,
1ab0c851 1348Emacs now supports `mouse-highlight', help-echo (in the echo area), and
4e98ad15
GM
1349`mouse-autoselect-window'.
1350
1a9c6830 1351** On MS Windows Vista and later Emacs now supports symbolic links.
4e98ad15 1352
823b2fb6 1353** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
4e98ad15
GM
1354support for libxml2, even if its presence is detected.
1355
4e98ad15
GM
1356** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1357
823b2fb6 1358** On Mac OS X, configure no longer automatically adds the Fink "/sw"
4e98ad15
GM
1359directories to the search path. You must add them yourself if you want them.
1360
2a1e2476
GM
1361\f
1362* Changes in Emacs 24.2
1363
5190da91 1364** This is mainly a bug-fix release.
6dad7178 1365
9078ead6 1366\f
eb199145 1367* Installation Changes in Emacs 24.1
09e18d03 1368
31fd3586
GM
1369** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1370to configure. Note that other libraries used by Emacs, RSVG and GConf,
1371also depend on Gtk+. You can disable them with --without-rsvg and
1372--without-gconf.
338648ad 1373
31fd3586
GM
1374** Emacs can be compiled with GnuTLS support.
1375This happens by default if a suitably recent version of the library is
1376found at build time. To prevent this, use the configure option
1377`--without-gnutls'. See below for GnuTLS features.
338648ad 1378
31fd3586
GM
1379** Emacs can be compiled with SELinux support.
1380This happens by default if a suitably recent version of the library is
1381found at build time. To prevent this, use the configure option
1382`--without-selinux'. See below for SELinux features.
aded53ff 1383
31fd3586
GM
1384** Emacs can be compiled with ImageMagick support.
1385This happens by default if a suitably recent version of the library is
1386found at build time. To prevent this, use the configure option
1387`--without-imagemagick'. See below for ImageMagick features.
c1f10868 1388This feature is not available for the Nextstep or MS ports.
d9170db5 1389
043efd56
GM
1390** Emacs can be compiled with libxml2 support.
1391This happens by default if a suitably recent version of the library is
1392found at build time. To prevent this, use the configure option
1393`--without-xml2'. See below for libxml2 features.
1394
7d301ae6
CY
1395** By default, the installed Info and man pages are compressed.
1396You can disable this by configuring --without-compress-info.
1397
7d301ae6 1398** New configure option --with-wide-int.
81eafe29 1399With it, Emacs integers typically have 62 bits, even on 32-bit machines.
0a768890
PE
1400On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1401to about 2 GiB.
81eafe29 1402
7d301ae6 1403** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
31fd3586
GM
1404These provide no new functionality, they just remove the need to edit
1405lib-src/Makefile by hand in order to use the associated features.
1406
7d301ae6 1407** New configure option --enable-use-lisp-union-type.
31fd3586
GM
1408This is only useful for Emacs developers to debug certain types of bugs.
1409This is not a new feature; only the configure flag is new.
041d709f
CY
1410
1411** The standalone programs digest-doc and sorted-doc are removed.
1412Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1413
041d709f
CY
1414** The standalone program `fakemail' is removed.
1415If you need it, feedmail.el provides a superset of the functionality.
1416
0bfd685e 1417\f
eb199145 1418* Startup Changes in Emacs 24.1
4a263588 1419
198a7a97 1420** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
adbf62ff
GM
1421command line arguments, and the EMACS_UNIBYTE environment variable, no
1422longer have any effect. (They were declared obsolete in Emacs 23.)
198a7a97 1423
66b7b0fe 1424** New command line option `--no-site-lisp' removes site-lisp directories
1b5e5b0c
GM
1425from load-path. -Q now implies this. This option does not affect the
1426EMACSLOADPATH environment variable (and hence has no effect for
c8d59ba3 1427Nextstep builds).
66b7b0fe 1428
0bfd685e 1429\f
eb199145 1430* Changes in Emacs 24.1
7841339b 1431
a2a25d24 1432** Completion
fdeb32ec 1433
dfdb4cad
CY
1434*** Many packages now use the `completion-at-point' command,
1435rather than implementing separate completion commands.
1436
de0bde62 1437*** `completion-at-point' now handles tags and semantic completion.
dfdb4cad 1438
a2a25d24
SM
1439*** Completion in a non-minibuffer now tries to detect the end of completion
1440and pops down the *Completions* buffer accordingly.
dfdb4cad
CY
1441
1442*** New option `completion-cycle-threshold' allows completion cycling.
1443
1444*** New option `completion-category-overrides' for overriding the
2c719188 1445default completion style in certain circumstances.
dfdb4cad 1446
a2a25d24 1447*** New completion style `substring'.
dfdb4cad
CY
1448
1449*** Completion of buffer names uses `substring' completion by default.
1450
1451*** The option `widget-complete-field' has been removed.
620c53a6 1452
6870aaef 1453** Mail changes
dfdb4cad 1454
7d301ae6
CY
1455*** The first time you try sending mail, Emacs asks for a mail method.
1456This is implemented by a new default for `send-mail-function', which
1457is `sendmail-query-once'. This offers to use the smtpmail package, or
1458to use the old defaults relying on external mail facilities
1459(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1460`mailclient-send-it' on Windows).
dfdb4cad 1461
e78e7e48
CY
1462*** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
1463transfers the report to your desktop's preferred mail client, if there
1464is one. This uses either the "xdg-email" utility, or Mac OS's "open"
1465command.
dfdb4cad 1466
7d301ae6
CY
1467*** See Changes in Specialized Modes and Packages for SMTPmail changes
1468and Mail mode changes
3f88cd72 1469
041d709f 1470** Emacs server and client changes
dfdb4cad 1471
7d301ae6 1472*** New option `server-port' specifies the port for TCP Emacs servers.
dfdb4cad 1473
041d709f 1474*** New emacsclient argument -q/--quiet suppresses some status messages.
dfdb4cad 1475
7d301ae6
CY
1476*** New emacsclient argument --frame-parameters specifies the frame
1477parameters of any newly-created graphical frame.
dfdb4cad
CY
1478
1479*** If emacsclient shuts down due to Emacs signaling an error,
1480its exit status is 1.
1481
041d709f
CY
1482*** New emacsclient argument --parent-id ID.
1483This opens a client frame in parent X window ID, via XEmbed, similar
1484to the --parent-id argument to Emacs.
1485
d0ce9f8c
MB
1486** Internationalization changes
1487
d0ce9f8c 1488*** Emacs now supports display and editing of bidirectional text.
7d301ae6
CY
1489Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1490displayed in the correct visual order as expected by users of those
dfdb4cad
CY
1491scripts. The display reordering is a "full bidirectionality" class
1492implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1493with no RTL text should look exactly the same as before.
f4b6ba46 1494
041d709f 1495**** New buffer-local variable `bidi-display-reordering'.
7d301ae6 1496To disable display reordering in a buffer, change this to nil.
d20e1419 1497
041d709f
CY
1498**** New buffer-local variable `bidi-paragraph-direction'.
1499If nil (the default), Emacs determines the base direction of each
dfdb4cad
CY
1500paragraph from its text, as specified by the UBA. Setting the value
1501to `right-to-left' or `left-to-right' forces a base direction on each
1502paragraph.
f4b6ba46 1503
7d301ae6
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1504Paragraphs with right-to-left base direction are displayed starting at
1505the right window edge.
f1816485 1506
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1507*** Enhanced support for characters with no glyphs in available fonts,
1508or, on text terminals, characters that cannot be encoded by the
1509terminal coding system. The new option `glyphless-char-display-control'
1510specifies how to display them: as a hexadecimal code in a box, a thin
15111-pixel space, an empty box, etc.
d0ce9f8c 1512
9702b7a1
GM
1513*** New input methods for Farsi and Bulgarian
1514(farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
041d709f 1515
939db9ac
CY
1516*** `nobreak-char-display' now also highlights Unicode hyphen chars
1517(U+2010 and U+2011).
1518
7d301ae6 1519*** New Hebrew translation of the Emacs Tutorial.
31fd3586
GM
1520Type `C-u C-h t' to choose it in case your language setup doesn't
1521automatically select it.
1522
7d301ae6
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1523** An Emacs Lisp package manager is now included.
1524This is a convenient way to download and install additional packages,
1525from a package repository at http://elpa.gnu.org.
dfdb4cad 1526
7d301ae6
CY
1527*** M-x list-packages shows a list of packages, which can be
1528selected for installation.
dfdb4cad 1529
7d301ae6 1530*** New command `describe-package', bound to `C-h P'.
dfdb4cad 1531
7d301ae6
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1532*** By default, all installed packages are loaded automatically when
1533Emacs starts up. To disable this, set `package-enable-at-startup' to
1534nil. To specify the packages to load, customize `package-load-list'.
16a91140 1535
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1536** Custom theme changes
1537
7d301ae6
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1538*** New command `M-x customize-themes', which provides a convenient
1539interface for enabling and disabling Custom themes.
dfdb4cad 1540
7d301ae6 1541*** New option `custom-theme-load-path' is the load path for themes.
dfdb4cad
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1542Emacs no longer looks for Custom themes in `load-path'. The default
1543value of `custom-theme-load-path' says to look for themes in
1544`custom-theme-directory', followed by a subdirectory of
1545`data-directory' named "themes/", which contains a small selection of
1546built-in Custom themes.
1547
7d301ae6
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1548*** New option `custom-safe-themes' records known-safe theme files.
1549If a theme is not in this list, Emacs queries before loading it, and
1550offers to save the theme to `custom-safe-themes' automatically. By
1551default, all themes included in Emacs are treated as safe.
b7d65a5f 1552
7d301ae6 1553** Improved GTK integration
dfdb4cad 1554
7d301ae6 1555*** GTK scroll-bars are now placed on the right by default.
dfdb4cad
CY
1556The function `set-scroll-bar-mode' can change this.
1557
7d301ae6 1558*** GTK tool bars can have just text, just images or images and text.
dfdb4cad
CY
1559Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1560the default is taken from desktop settings.
1561
1562*** GTK tool bars can be placed on any edge of the frame.
7d301ae6
CY
1563The frame-parameter tool-bar-position controls this. It takes the
1564values top, left, right or bottom. The Options => Show/Hide menu has
1565entries for this.
dfdb4cad 1566
7d301ae6
CY
1567*** The default colors for selected text (the `region' face) are taken
1568from the GTK theme when Emacs is built with GTK.
dfdb4cad 1569
7d301ae6
CY
1570*** Emacs uses GTK tooltips by default if built with GTK.
1571You can disable this by changing `x-gtk-use-system-tooltips' to nil.
a5bee597 1572
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CY
1573** Graphical interface changes
1574
1575*** On graphical displays, the mode-line no longer ends in dashes.
1576Also, the first dash (which does not indicate anything) is just
1577displayed as a space.
1578
1579*** `menu-bar-select-buffer-function' lets you choose another operation
1580instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1581
1582*** Lucid menus and dialogs can display antialiased fonts if Emacs is
1583built with Xft. These fonts can be set via X resources, for example:
1584Emacs.pane.menubar.font: Courier-12
1585
7d301ae6 1586** Exiting changes
dfdb4cad 1587
7d301ae6 1588*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
dfdb4cad
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1589or if it receives a SIGINT signal in batch mode.
1590
7d301ae6
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1591*** `kill-emacs-hook' is now also run in batch mode.
1592Third-party code which adds to `kill-emacs-hook' should check if they
1593do the right thing in batch mode.
9c524fcb 1594
041d709f 1595** Scrolling changes
dfdb4cad 1596
041d709f 1597*** New scrolling commands `scroll-up-command' and `scroll-down-command'
0a19a6f8 1598(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
7d301ae6 1599of buffer at first key-press (instead they move to top/bottom of buffer)
550f41cd 1600when `scroll-error-top-bottom' is non-nil.
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1601
1602*** New option `scroll-error-top-bottom' (see above).
1603
041d709f 1604*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 1605scroll a line instead of full screen.
dfdb4cad 1606
041d709f 1607*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 1608define it as a scroll command affected by `scroll-preserve-screen-position'.
dfdb4cad 1609
041d709f 1610*** If you customize `scroll-conservatively' to a value greater than 100,
d0f69533
EZ
1611Emacs will never recenter point in the window when it scrolls due to
1612cursor motion commands or commands that move point (e.f., `M-g M-g').
1613Previously, you needed to use `most-positive-fixnum' as the value of
1614`scroll-conservatively' to achieve the same effect.
dfdb4cad 1615
7d301ae6 1616*** "Aggressive" scrolling now honors the scroll margins.
d0f69533
EZ
1617If you customize `scroll-up-aggressively' or
1618`scroll-down-aggressively' and move point off the window, Emacs now
1619scrolls the window so as to avoid positioning point inside the scroll
1620margin.
1621
7d301ae6
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1622** Basic SELinux support has been added.
1623This requires Emacs to be linked with libselinux at build time.
f1a5d776 1624
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1625*** Emacs preserves the SELinux file context when backing up.
1626Also, the function `copy-file' has an extra optional argument for
1627preserving SELinux context, and the return value of `backup-buffer'
1628now includes the SELinux context.
f0bf7c8e 1629
dfdb4cad 1630*** New functions `file-selinux-context' and `set-file-selinux-context'
7d301ae6 1631get and set the SELinux context of a file.
44198b6e 1632
7d301ae6 1633** Trash changes
dfdb4cad 1634
7d301ae6
CY
1635*** `delete-by-moving-to-trash' now only affects commands that specify
1636trashing. This avoids inadvertently trashing temporary files.
dfdb4cad 1637
7d301ae6
CY
1638*** Calling `delete-file' or `delete-directory' with a prefix argument
1639now forces true deletion, regardless of `delete-by-moving-to-trash'.
278f6845 1640
041d709f 1641** File- and directory-local variable changes
dfdb4cad 1642
041d709f
CY
1643*** You can stop directory local vars from applying to subdirectories.
1644Add an element (subdirs . nil) to the alist portion of any variables
1645settings to indicate that the section should not apply to
1646subdirectories.
dfdb4cad 1647
041d709f
CY
1648*** Directory local variables can apply to some file-less buffers.
1649Affected modes include dired, vc-dir, and log-edit. For example,
1650adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
1651turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
1652`hack-dir-local-variables-non-file-buffer' to support this.
dfdb4cad 1653
041d709f
CY
1654*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
1655Instead, use "eval: (minor-mode 1)".
c136e5cd 1656
7b447e9b
GM
1657*** The variable `inhibit-first-line-modes-regexps' has been renamed
1658to `inhibit-local-variables-regexps'. As the name suggests, it now
dfdb4cad
CY
1659applies to ALL file local variables, not just -*- lines. The
1660associated `inhibit-first-line-modes-suffixes' has been renamed in the
1661corresponding way.
5d907d6c 1662
0a2132ba
CY
1663** Window changes
1664
91b65361
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1665*** The `quit-window' command now restores the last buffer displayed
1666in the quitted window.
1667
0a2132ba
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1668*** Resizing an Emacs frame now preserves proportional window sizes,
1669modulo restrictions like window minimum sizes and fixed-size windows.
1670
1671*** The behavior of `display-buffer' is now customizable in detail.
dfdb4cad 1672
0a2132ba
CY
1673**** New option `display-buffer-base-action' specifies a list of
1674user-determined display "actions" (functions and optional arguments
1675for choosing the displaying window).
1676
1677This takes precedence over the default display action, which is
1678specified by `display-buffer-fallback-action'.
1679
1680**** New option `display-buffer-alist' maps buffer name regexps to
1681display actions, taking precedence over `display-buffer-base-action'.
1682
a0c2d0ae
MR
1683*** New option `window-combination-limit'.
1684The new option `window-combination-limit' allows to return the space
1685obtained for resizing or creating a window more reliably to the window
1686from which such space was obtained.
0a2132ba 1687
a0c2d0ae
MR
1688*** New option `window-combination-resize'.
1689The new option `window-combination-resize' allows to split a window that
1690otherwise cannot be split because it's too small by stealing space from
1691other windows in the same combination. Subsequent resizing or deletion
1692of the window will resize all windows in the same combination as well.
0a2132ba 1693
91b65361
CY
1694*** New option `frame-auto-hide-function' lets you choose between
1695iconifying or deleting a frame when burying a buffer in a dedicated
1696frame, or quitting a window showing a buffer in a frame of its own.
1697
0a2132ba 1698*** New commands `maximize-window' and `minimize-window'.
53964682 1699These maximize and minimize the size of a window within its frame.
0a2132ba 1700
0a2132ba
CY
1701*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
1702These functions allow to navigate through the live buffers that have
1703been shown in a specific window.
1704
7d301ae6 1705** Minibuffer changes
dfdb4cad 1706
7d301ae6 1707*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
104dc9c6
GM
1708This is handy for minibuffer-only frames, and is also used for the feature
1709where mouse-1 pops up *Messages*"', which can now easily be changed.
041d709f 1710
7d301ae6 1711*** Minibuffers set `truncate-lines' to nil.
f66eca26 1712If you want to change the value to something else, you could use
7d301ae6
CY
1713for example `minibuffer-setup-hook'.
1714
7d301ae6
CY
1715** `auto-mode-case-fold' is now enabled by default.
1716
7d301ae6 1717** `backup-by-copying-when-mismatch' now defaults to t.
f66eca26 1718
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CY
1719** New basic faces `error', `warning', `success'.
1720These are used to highlight text indicating failure, caution or
1721successful operation.
1722
1723** New option `list-colors-sort' defines the color sort order
1724for `list-colors-display'.
1725
1726** The variable `focus-follows-mouse' now always defaults to nil.
1727
0bfd685e 1728\f
eb199145 1729* Editing Changes in Emacs 24.1
b350bdf2 1730
892777ba 1731** Search changes
dfdb4cad
CY
1732
1733*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
1734`isearch-yank-line'.
1735
1736*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
1737`isearch-yank-kill'.
1738
1739*** M-s C-e in Isearch is now bound to `isearch-yank-line'.
1740
b2b0776e 1741** New commands `count-words-region' and `count-words'.
dfdb4cad 1742
10607bea
CY
1743*** M-= is bound to `count-words-region', not `count-lines-region'.
1744The `count-words-region' command, when called interactively, reports
1745the number of lines, words, and characters in the region. It is a
1746superset of the old `count-lines-region', which is now an obsolete
1747alias for it.
ea4f7750 1748
ec9da840 1749** The command `just-one-space' (M-SPC), if given a negative argument,
1c708c1a
CY
1750also deletes newlines around point.
1751
b9229673 1752** Deletion changes
dfdb4cad 1753
b9229673 1754*** New option `delete-active-region'.
ddb54206 1755If non-nil, [delete] and DEL delete the region if it is active and no
dfdb4cad 1756prefix argument is given. If set to `kill', those commands kill
ddb54206 1757instead.
dfdb4cad 1758
59ee0542 1759*** New command `delete-forward-char', bound to [delete].
42d9cffa
CY
1760This is meant for interactive use, and obeys `delete-active-region'.
1761The command `delete-char' does not obey `delete-active-region'.
dfdb4cad 1762
b9229673
CY
1763*** `delete-backward-char' is now a Lisp function.
1764Apart from obeying `delete-active-region', its behavior is unchanged.
7d301ae6
CY
1765However, the byte compiler now warns if it is called from Lisp; Lisp
1766callers should use delete-char with a negative argument instead.
dfdb4cad 1767
b9229673
CY
1768*** The option `mouse-region-delete-keys' has been deleted.
1769
f9d71b42
CY
1770** Selection changes.
1771
7d301ae6
CY
1772The default handling of clipboard and primary selections has been
1773changed to conform with modern X applications. In short, most
1774commands for killing and yanking text now use the clipboard, while
1775mouse commands use the primary selection.
b1ab31ae
CY
1776
1777In the following, we provide a list of these changes, followed by a
1778list of steps to get the old behavior back if you prefer that.
1779
b1ab31ae
CY
1780*** `select-active-regions' now defaults to t.
1781Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 1782the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
1783the system possesses a separate primary selection facility (e.g. X).
1784
1785**** `select-active-regions' also accepts a new value, `only'.
1786This means to only set the primary selection for temporarily active
1787regions (usually made by mouse-dragging or shift-selection);
1788"ordinary" active regions, such as those made with C-SPC followed by
1789point motion, do not alter the primary selection.
1790
963578d3
CY
1791**** `mouse-drag-copy-region' now defaults to nil.
1792
b1ab31ae
CY
1793*** mouse-2 is now bound to `mouse-yank-primary'.
1794This pastes from the primary selection, ignoring the kill-ring.
1795Previously, mouse-2 was bound to `mouse-yank-at-click'.
dfdb4cad 1796
b1ab31ae 1797*** `x-select-enable-clipboard' now defaults to t on all platforms.
dfdb4cad 1798
b1ab31ae
CY
1799*** `x-select-enable-primary' now defaults to nil.
1800Thus, commands that kill text or copy it to the kill-ring (such as
1801M-w, C-w, and C-k) also use the clipboard---not the primary selection.
1802
1803**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
dfdb4cad 1804exactly equivalent to M-w, C-w, and C-y respectively.
b1ab31ae
CY
1805
1806**** Note that on MS-Windows, `x-select-enable-clipboard' was already
1807non-nil by default, as Windows does not support the primary selection
1808between applications.
1809
1810*** To return to the previous behavior, do the following:
dfdb4cad 1811
104c2fe9 1812**** Change `select-active-regions' to nil.
b1ab31ae
CY
1813**** Change `mouse-drag-copy-region' to t.
1814**** Change `x-select-enable-primary' to t (on X only).
1815**** Change `x-select-enable-clipboard' to nil.
1816**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 1817
084e6df3 1818*** Support for X cut buffers has been removed.
dfdb4cad 1819
3fd50d5c
CY
1820*** X clipboard managers are now supported.
1821To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 1822
dfdb4cad
CY
1823** New command `C-x r N' (`rectangle-number-lines') numbers the lines
1824in the current rectangle. With a prefix argument, this prompts for a
1825number to count from and for a format string.
99f053cf 1826
7d301ae6 1827** `redisplay-dont-pause' now defaults to t.
6bf7006f
EZ
1828This makes Emacs feel more responsive to editing commands that arrive
1829at high rate, e.g. if you lean on some key, because stopping redisplay
1830in the middle (when this variable is nil) forces more expensive
1831updates later on, and Emacs appears to be unable to keep up.
1832
e70b5064
CY
1833** The behavior of <TAB> for active regions in Text mode has changed.
1834In Text and related modes, typing <TAB> (`indent-for-tab-command')
1835when the region is active causes Emacs to indent all the lines in the
1836region, aligning them with the line previous to the first line in the
1837region (or with the left margin if there is no previous line).
1838
dfdb4cad
CY
1839** When `occur' is called with a prefix argument, matching strings are
1840collected into the `*Occur*' buffer without line numbers. If there
1841are parenthesized subexpressions in the specified regexp, `occur'
1842reads replacement text that may contain \\& and \\N whose convention
1843follows `replace-match'.
1844
9bae34bf 1845\f
eb199145 1846* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 1847
041d709f 1848** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 1849
b7c3692a 1850** BibTeX mode
dfdb4cad 1851
2de69e00 1852*** BibTeX mode now supports biblatex.
7d301ae6
CY
1853Use the variable `bibtex-dialect' to select different BibTeX dialects.
1854`bibtex-entry-field-alist' is now an obsolete alias for
1855`bibtex-BibTeX-entry-alist'.
1856
dfdb4cad
CY
1857*** New command `bibtex-search-entries', bound to C-c C-a.
1858
b7c3692a 1859*** New `bibtex-entry-format' option `sort-fields', disabled by default.
dfdb4cad 1860
022fe7ce
RW
1861*** New variable `bibtex-search-entry-globally'.
1862
7d301ae6 1863** Browse-url
dfdb4cad 1864
7d301ae6 1865*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
dfdb4cad 1866
7d301ae6
CY
1867*** The default browser used by the package is now the "xdg-open" program,
1868on platforms that support it. This calls your desktop's preferred browser.
1869
86e100a6
GM
1870** Calc
1871
1872*** Support for musical notes.
1873
1874*** Support for logarithmic units.
1875
1876*** No longer uses the tex prefix for TeX specific unit names when
1877using TeX or LaTeX mode.
1878
1879*** New option to highlight selections using faces.
1880
1881*** `calc-histogram' has the option of using a vector to determine the bins.
1882
1883*** New "O" option prefix.
1884
1885*** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
1886
cf16af42
GM
1887** Calendar, Diary, and Appt
1888
7d301ae6 1889*** Diary entries can contain non-printing "comments".
548d0a63
GM
1890See the variable `diary-comment-start'.
1891
5006e634
GM
1892*** Appointments can specify their individual warning times.
1893See the variable `appt-warning-time-regexp'.
1894
0a2bb1a9
GM
1895*** The function specified by `appt-disp-window-function' may be passed
1896lists of arguments if multiple appointments are due at similar times.
1897If you are using a custom function for this, you should update it.
1898
7454f200
GM
1899*** New function `diary-hebrew-birthday'.
1900
e565dd37
GM
1901*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
1902may no longer be nil, but must all be strings.
1903
7d301ae6
CY
1904*** The obsolete (since Emacs 22.1) method of enabling the appt
1905package by adding `appt-make-list' to `diary-hook' has been removed.
1906Use `appt-activate' instead.
cf16af42 1907
cf16af42
GM
1908*** Some appt variables (obsolete since Emacs 22.1) have been removed:
1909appt-issue-message (use the function appt-activate)
1910appt-visible/appt-msg-window (use the variable appt-display-format)
1911
cf16af42
GM
1912*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
1913view-diary-entries, list-diary-entries, show-all-diary-entries
1914
551b046f 1915** CC Mode
dfdb4cad 1916
551b046f 1917*** New feature to "guess" the style in an existing buffer.
7d301ae6 1918The main entry point is M-x c-guess.
041d709f 1919
551b046f
AM
1920*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
1921
dfdb4cad 1922*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
551b046f
AM
1923Thus C-M-a will, by default, go to the beginning of the immediate function,
1924not the top level.
1925
dfdb4cad 1926*** "Macros with semicolons" can be registered for correct indentation.
551b046f
AM
1927Where such a macro ends a line (no semicolon) the next statement is no longer
1928parsed as a statement continuation.
1929
dfdb4cad 1930** Comint and modes derived from it use the standard completion code.
041d709f
CY
1931
1932** Compilation mode
dfdb4cad 1933
7d301ae6 1934*** Compilation mode can be used without Font Lock mode.
041d709f
CY
1935`compilation-parse-errors-function' is now obsolete.
1936
dfdb4cad 1937*** New variable `compilation-filter-start', which is bound while
7d301ae6
CY
1938`compilation-filter-hook' runs. It records the start position of the
1939text inserted by `compilation-filter'.
041d709f 1940
47a6a35f
GM
1941*** `compilation-error-screen-columns' and `compilation-first-column'
1942are obeyed in the editing buffer. So programming language modes can
7d301ae6
CY
1943set them, whereas previously only the value in the *Compilation*
1944buffer was used.
1dce7193 1945
52834b6b
CY
1946** Customize
1947
1948*** Customize buffers now contain a search field.
1949The search is performed using `customize-apropos'.
7d301ae6 1950To turn off the search field, set `custom-search-field' to nil.
52834b6b 1951
8d5dd370 1952*** Options in customize group buffers start out hidden if not customized.
52834b6b
CY
1953Use the arrow to the left of the option name to toggle visibility.
1954
1955*** custom-buffer-sort-alphabetically now defaults to t.
1956
1957*** The color widget now has a "Choose" button, which allows you to
7d301ae6 1958choose a color via `list-colors-display'.
52834b6b 1959
041d709f
CY
1960** D-Bus
1961
5da3be7f
GM
1962*** It is now possible to access buses other than the default system
1963or session bus.
041d709f 1964
7d301ae6 1965*** The `dbus-register-method' and `dbus-register-property' functions
5da3be7f 1966optionally do not register names.
041d709f 1967
7d301ae6 1968*** The new function `dbus-register-service' registers a known service
dfdb4cad 1969name on a D-Bus without also registering a property or a method.
041d709f 1970
f5d6548a 1971** Dired-x
425a25f1 1972
7d301ae6
CY
1973*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
1974if called with a prefix argument, read a file name from the minibuffer
1975instead of using the current buffer.
f5d6548a 1976
7d301ae6 1977*** The "dired local variables" feature of Dired-x is obsolete.
817b48a7 1978The standard directory local variables feature replaces it.
8117868f 1979
041d709f 1980** ERC changes
7492acc9 1981
c4077254
GM
1982*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
1983controlling attempts to autojoin a channel.
041d709f
CY
1984
1985*** New variable `erc-coding-system-precedence': If we use `undecided'
1986as the server coding system, this variable will then be consulted.
1987The default is to decode strings that can be decoded as utf-8 as
1988utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 1989
041d709f 1990** Eshell changes
7492acc9 1991
05f77e38
GM
1992*** The default value of `eshell-directory-name' has changed
1993to be an "eshell" directory in `user-emacs-directory'.
1994The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
1995
1996** gdb-mi
dfdb4cad
CY
1997
1998*** The M-x gdb command now uses the GDB Machine Interface protocol.
05f77e38
GM
1999It now supports multithread non-stop debugging and simultaneous
2000debugging of several threads.
7492acc9 2001
18af70d0
CY
2002** Image mode
2003
05f77e38
GM
2004*** RET (`image-toggle-animation') toggles animation, if applicable.
2005Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 2006
041d709f 2007** Info
723ee192 2008
7d301ae6 2009*** New command M-x info-display-manual displays a named Info manual.
2ebc3b94
GM
2010If that manual is already visited in some Info buffer, it displays
2011that buffer. (This is handy if you have many manuals in many *info*
2012buffers, and don't remember the name of the buffer visiting the manual
2013you want to consult.) Otherwise, it loads and displays the manual.
691cf4a0 2014
24ea72d3
EZ
2015*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2016This is for compatibility with the stand-alone Info reader program,
2017and also because `Info-edit' is a rarely used command that is disabled
2018by default.
2019
7d301ae6 2020** Mail mode changes (not Message mode)
dfdb4cad 2021
7d301ae6 2022*** New command M-x mail-add-attachment for adding MIME attachments
7d301ae6 2023
dfdb4cad
CY
2024*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2025(Its name is misleading, since it has nothing to do with MIME
2026attachments.) The old name is now an obsolete alias to the new name.
2027
f2c3a9eb 2028** MH-E has been updated to MH-E version 8.3.1.
041d709f 2029See MH-E-NEWS for details.
37221432 2030
041d709f 2031** Modula-2 mode provides auto-indentation.
37221432 2032
041d709f 2033** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 2034
5d1ac394 2035** nXML mode no longer binds C-RET to `nxml-complete'.
dfdb4cad
CY
2036Completion is now performed via `completion-at-point', bound to C-M-i
2037or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2038default), this performs tag completion.
5d1ac394 2039
f2c3a9eb
CY
2040** Org mode has been updated to version 7.8.09.
2041See ORG-NEWS for details.
2042
041d709f 2043** Prolog mode has been completely revamped, with lots of additional
7d301ae6
CY
2044functionality such as more intelligent indentation, electricity,
2045support for more variants, including Mercury, and a lot more.
041d709f
CY
2046
2047** Rmail
2048
2049*** The command `rmail-epa-decrypt' decrypts OpenPGP data
2050in the Rmail incoming message.
2051
50419064
GM
2052*** The variable `rmail-message-filter' no longer has any effect.
2053This change was made in Emacs 23.1 but was not advertised at the time.
2054Try using `rmail-show-message-hook' instead.
2055
717a1362 2056** Shell mode
dfdb4cad
CY
2057
2058*** M-x shell prompts for the shell path name if the default directory
2059is a remote file name and neither the environment variable $ESHELL nor
2060the variable `explicit-shell-file-name' is set.
2061
2062*** TAB is now bound to the standard `completion-at-point' command,
2063which now implements the pcomplete rules for shell command completion.
717a1362 2064
7d301ae6
CY
2065** SMTPmail
2066
dfdb4cad 2067*** SMTPmail now uses encrypted connections (via STARTTLS) by default
7d301ae6
CY
2068if the mail server supports them. This uses either built-in GnuTLS
2069support, or the starttls.el library. Customize `smtpmail-stream-type'
2070to change this.
2071
7d301ae6
CY
2072*** The variable `smtpmail-auth-credentials' has been removed.
2073By default, the information is now stored in the file ~/.authinfo.
dfdb4cad
CY
2074This was the default value of smtpmail-auth-credentials. If you had
2075customized smtpmail-auth-credentials to a list of user names and
2076passwords, those settings are not used. During your first connection
2077to the smtp server, Emacs will prompt for the user name and password,
2078and offer to save them to ~/.authinfo. Or you can manually copy the
2079credentials to ~/.authinfo. For example, if you had
7d301ae6
CY
2080
2081 (setq smtpmail-auth-credentials
2082 '(("mail.example.org" 25 "jim" "s!cret")))
2083
2084then the equivalent line in ~/.authinfo would be
2085
2086 machine mail.example.org port 25 login jim password s!cret
2087
2088See the auth-source manual for more information, e.g. on encrypting
2089the credentials file.
2090
7d301ae6 2091*** The variable `smtpmail-starttls-credentials' has been removed.
dfdb4cad 2092If you had that set, you need to put
7d301ae6
CY
2093
2094 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2095
2096in your ~/.authinfo file instead.
2097
8ce192e3
LI
2098*** SMTPmail defaults to using the address in the From: header as the
2099SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2100to the address you wish to use instead.
2101
34e8a2da 2102** SQL mode
041d709f 2103
34e8a2da
GM
2104*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2105and `sql-oracle-scan-on'.
041d709f 2106
dfdb4cad 2107*** New options controlling prompting for login parameters.
34e8a2da
GM
2108Each supported product has a custom variable `sql-*-login-params',
2109which is a list of the parameters to be prompted for before a
2110connection is established.
041d709f
CY
2111
2112*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 2113which causes it to prompt for an SQL product.
041d709f 2114
34e8a2da 2115*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
2116These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2117given a prefix argument, prompt for a name for the SQL interactive
2118buffer. This reduces the need for calling `sql-rename-buffer'.
2119
2120*** SQL interactive modes suppress command continuation prompts, and
2121replace tabs with spaces. The first change impacts multiple line SQL
2122statements entered with C-j between each line, statements yanked into
2123the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
2124second prevents the MySQL and Postgres interpreters from listing
2125object name completions when sent text via `sql-send-*' functions.
041d709f
CY
2126
2127*** New command `sql-connect' starts a predefined SQLi session,
2128using the login parameters from `sql-connection-alist'.
2129
2130*** New "Save Connection" menu item in SQLi buffers.
2131This gathers the login params specified for the SQLi session, if it
2132was not started by a connection, and saves them as a new connection.
2133
34e8a2da
GM
2134*** New commands for listing database objects and details:
2135sql-list-all and sql-list-table.
041d709f
CY
2136
2137*** An API for manipulating SQL product definitions has been added.
2138
2139** TeX modes
2140
2141*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 2142
459bba37 2143** Tramp
dfdb4cad 2144
7d301ae6 2145*** New inline access method "ksu" (kerberized su).
dfdb4cad 2146
459bba37 2147*** The following access methods are discontinued: "ssh1_old",
ea843702 2148"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
dfdb4cad 2149
b011fbfe
GM
2150*** The user option `remote-file-name-inhibit-cache' controls whether
2151remote file attributes are cached for better performance.
dfdb4cad 2152
58f74fe4
MA
2153*** The option `ange-ftp-binary-file-name-regexp' has changed its
2154default value to "".
dfdb4cad 2155
7d301ae6
CY
2156*** Handlers for `file-selinux-context' and `set-file-selinux-context'
2157for remote machines which support SELinux.
58f74fe4 2158
dfdb4cad 2159** New function `url-queue-retrieve', which behaves like url-retrieve,
a48ec60c
GM
2160but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2161the degree of parallelism.
177549d0 2162
0c32ce32
CY
2163** VC and related modes
2164
2165*** Support for pulling on distributed version control systems.
7d301ae6
CY
2166The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2167supported (currently with Bzr, Git, and Mercurial), to update the
2168current branch and working tree. A prefix argument means to prompt
2169the user for specifics, e.g. a pull location.
0c32ce32 2170
dab3703d 2171*** `vc-update' is now an alias for `vc-pull'.
0c32ce32
CY
2172
2173*** Support for merging on distributed version control systems.
7d301ae6
CY
2174The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2175is supported (currently with Bzr, Git, and Mercurial), to merge
2176changes from another branch into the current one. It prompts for
2177specifics, e.g. a merge source.
0c32ce32 2178
2afef60a 2179*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 2180shows a diff while querying the user. It defaults to t.
2afef60a 2181
d4eb88c7
CY
2182*** Log entries in some Log View buffers can be toggled to display a
2183longer description by typing RET (log-view-toggle-entry-display).
dab3703d
GM
2184This is currently supported for Bzr, Git, and Mercurial (to support
2185another backend, define a `log-view-expanded-log-entry-function').
7d301ae6 2186In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
d4eb88c7
CY
2187use this to display the full log entry for the revision at point.
2188
1c6c854e
CS
2189*** New command `vc-ediff' allows visual comparison of two revisions
2190of a file similar to `vc-diff', but using ediff backend.
2191
86c60681
CY
2192*** The option `vc-initial-comment' was removed in Emacs 23.2, but
2193this was not advertised at the time.
2194
86c60681
CY
2195*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2196Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
2197this was not advertised at the time.
2198
041d709f
CY
2199** Obsolete modes
2200
23d70505
GM
2201*** abbrevlist.el
2202
f8ca9162 2203*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
2204
2205*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
2206You can get a comparable behavior with:
2207(setq completion-styles '(partial-completion initials))
2208(setq completion-pcm-complete-word-inserts-delimiters t)
2209
23d70505
GM
2210*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2211
2c719188 2212*** pgg is obsolete (use EasyPG instead).
041d709f
CY
2213
2214*** sregex.el is obsolete, since rx.el is a strict superset.
2215
23d70505
GM
2216*** s-region.el and pc-select.el are obsolete.
2217They are superseded by shift-select-mode, enabled by default since 23.1.
2218
2c719188 2219*** vc-mcvs.el is obsolete (for lack of a maintainer).
ca5eed61 2220
0fe719e6
GM
2221** Miscellaneous
2222
05f77e38 2223*** The Landmark game is now invoked with `landmark', not `lm'.
c6ad2a4e 2224Its functions and variables have been similarly renamed.
05f77e38 2225
dfdb4cad 2226*** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
05f77e38
GM
2227(This interfered with cua-mode.)
2228
9f678528
GM
2229*** f90.el has some support for Fortran 2008 syntax.
2230
0fe719e6
GM
2231*** `copyright-fix-years' can optionally convert consecutive years to ranges.
2232
5b3e6db8
GM
2233*** New command `nato-region' converts text to NATO phonetic alphabet.
2234
eb199145
GM
2235\f
2236* New Modes and Packages in Emacs 24.1
d445b3f8 2237
60e56523 2238** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 2239original buffers. It is bound to "e" in Occur mode.
60e56523 2240
a075a2c5
GM
2241** New global minor mode electric-pair-mode.
2242When enabled, typing an open parenthesis automatically inserts the
2243matching closing one.
2244
2245** New global minor mode electric-indent-mode.
2246When enabled, typing certain characters triggers reindentation.
cd3308f3
GM
2247Major modes wishing to use this can set electric-indent-chars or
2248electric-indent-functions.
a075a2c5
GM
2249
2250** New global minor mode electric-layout-mode.
2251When enabled, typing certain characters automatically inserts newlines.
cd3308f3 2252Major modes wishing to use this can set electric-layout-rules.
3b843809 2253
a83ec3c9
CY
2254** tabulated-list.el provides a generic major mode for tabulated data,
2255from which other modes can be derived.
2256
d02c9bcd
SM
2257** pcase.el provides the ML-style pattern matching macro `pcase'.
2258
7725ebb7
MA
2259** secrets.el is an implementation of the Secret Service API, an
2260interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
2261Secret Service API requires D-Bus for communication. The command
2262`secrets-show-secrets' offers a buffer with a visualization of the
2263secrets.
7725ebb7 2264
f9e78150
MA
2265** notifications.el provides an implementation of the Desktop
2266Notifications API. It requires D-Bus for communication.
2267
12fe5bcc
MA
2268** soap-client.el supports access to SOAP web services from Emacs.
2269soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2270
ff1796f3 2271** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 2272
53bbe3ad 2273** New emacs-lock.el package.
7d301ae6
CY
2274The previous version has been moved to obsolete/old-emacs-lock.el.
2275Now, there is a proper minor mode `emacs-lock-mode'. Protection
2276against exiting Emacs and killing the buffer can be set separately.
2277The mechanism for automatically turning off protection for buffers
2278with dead inferior processes has been generalized.
53bbe3ad 2279
eb199145
GM
2280\f
2281* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 2282
7d301ae6
CY
2283** Passing a nil argument to a minor mode function call now ENABLES
2284the minor mode unconditionally. This is so that you can write e.g.
2285
dfdb4cad 2286 (add-hook 'text-mode-hook 'foo-mode)
7d301ae6 2287
dfdb4cad
CY
2288to enable foo-mode in Text mode buffers, removing the need for
2289`turn-on-foo-mode' style functions. This affects all mode commands
2290defined by `define-minor-mode'. If called interactively, the mode
2291command still toggles the minor mode.
7d301ae6 2292
d268b4fe
CY
2293** The return value of `backup-buffer' has changed.
2294It is now a list of three elements, where the second element is a list
2295describing the original file's SELinux context. If Emacs or the
f003f294 2296system lacks SELinux support, the context list is (nil nil nil nil).
7d301ae6 2297See "Basic SELinux support" above, under "Changes in Emacs 24.1".
d268b4fe 2298
dfdb4cad
CY
2299** `char-direction-table' and the `char-direction' function were deleted.
2300They were buggy and inferior to the new support of bidirectional
2301editing introduced in Emacs 24. If you need the bidirectional
2302properties of a character, use `get-char-code-property' with the last
2303argument `bidi-class'.
fa6996bc 2304
470d996d
TV
2305** `copy-directory' now copies the source directory as a subdirectory
2306of the target directory, if the latter is an existing directory. The
2307new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2308the contents directly into a pre-existing target directory.
2309
9173a8fb
CY
2310** For mouse click input events in the text area, the Y pixel
2311coordinate in the POSITION list now counts from the top of the text
2312area, excluding any header line. Previously, it counted from the top
2313of the header line.
2314
7d301ae6
CY
2315** Support for "old-style" backquotes, obsolete for 10+ years, has
2316been further reduced. Now a backquote not followed by a space is
2317always treated as a "new-style" backquote. Please remove all
2318"old-style" backquotes from your code. If your code uses backquotes
2319as documented in the Elisp manual, and compiles without warning, then
2320you have nothing to do in this regard. Code not following the
2321appropriate conventions may fail to compile.
50ab02c5
CY
2322
2323The most common cause of trouble seems to be an old-style backquote
2324followed by a newline. Another cause of trouble is vector notation
2325for key sequence notation: instead of [(control ,)] and [(control ')],
2326you should write [(control ?,)] and [(control ?')], which will work in
7d301ae6 2327older Emacsen too.
288cf4e9 2328
520f2425
GM
2329** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2330was not advertised at the time. The function `custom-initialize-delay'
2331replaced all known uses.
2332
7d301ae6
CY
2333** `view-buffer' now treats special mode-class in the same way that
2334`view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2335major mode is special).
fd5c9dfa 2336
7d301ae6 2337** Menu and tool bar changes
6431f2e6 2338
7d301ae6 2339*** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
2340and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2341With these alist entries omitted, `make-frame' checks the value of the
2342variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2343a menu-bar or tool-bar, respectively. If the alist entries are added,
2344they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 2345
7d301ae6
CY
2346*** The menu bar bindings's caches are not used any more.
2347Use (where-is-internal <def> nil t) instead.
2348
fe0aa820 2349** Regions created by mouse dragging are now normal active regions,
dfdb4cad 2350similar to those created by shift-selection (see Selection changes
7d301ae6
CY
2351above). In previous Emacs versions, these regions were delineated by
2352`mouse-drag-overlay'; that variable has been removed.
d6d8ee7a 2353
7d301ae6
CY
2354** The fourth argument of `filter-buffer-substring' has been removed.
2355If you want to remove text properties from the final result, simply
2356pass the result through substring-no-properties.
34c99998 2357
4583e796
GM
2358** cl.el no longer provides `cl-19'.
2359
7d301ae6
CY
2360** The following obsolete functions and aliases have been removed
2361(the appropriate new function is given in parentheses; "not needed"
2362means you can just remove all calls to the function in question):
2363
2364*** `comint-kill-output' (`comint-delete-output')
2365*** `decompose-composite-char' (`char-to-string')
2366*** `outline-visible' (`outline-invisible-p')
2367*** `internal-find-face' (`facep')
2368*** `internal-get-face' (`facep and check-face')
2369*** `frame-update-faces' (not needed)
2370*** `frame-update-face-colors' (`frame-set-background-mode')
2371*** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2c719188 2372*** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
7d301ae6
CY
2373*** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2374*** `x-make-font-bold-italic' (`make-face-bold-italic')
2375*** `x-make-font-unbold' (`make-face-unbold')
2376*** `x-make-font-unitalic' (`make-face-unitalic')
2377*** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2378*** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2379*** `iswitchb-default-keybindings' (`iswitchb-mode')
2380*** `char-bytes' (== 1)
2381*** `isearch-return-char' (`isearch-printing-char')
2382*** `make-local-hook' (not needed)
2383*** `set-screen-height' (`set-frame-height')
2384*** `set-screen-width' (`set-frame-width')
2385
7d301ae6
CY
2386** The following obsolete variables and varaliases have been removed
2387(the appropriate new variable is given in parentheses):
2388
2389*** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2390*** `vc-header-alist' (`vc-BACKEND-header')
2391*** `directory-sep-char' (== ?/)
2392*** `font-lock-defaults-alist' (`font-lock-defaults')
2393*** `e' (`float-e').
3226d6ca 2394
041d709f 2395** The following obsolete files were removed:
7b0e3048
GM
2396sc.el, x-menu.el, rnews.el, rnewspost.el
2397
7d301ae6
CY
2398** The format of the finder-inf.el file has changed, since the Finder
2399mechanism is now based on the package system. The variable
2400`finder-package-info' is replaced by `package--builtins' and
2401`finder-keywords-hash'.
33658d4e 2402
c2c79260
DE
2403** When generating autoloads, `update-directory-autoloads' no longer
2404assumes every inspected file is in your `load-path'. It instead
2405generates relative names according to the current `load-path'.
2406
eb199145 2407\f
93e0bed6 2408* Lisp Changes in Emacs 24.1
9097e8af 2409
041d709f 2410** Code can now use lexical scoping by default instead of dynamic scoping.
dfdb4cad 2411The `lexical-binding' variable enables lexical scoping for local
48da7392 2412variables. It is typically set via a file-local variable in the first
dfdb4cad
CY
2413line of the file, in which case it applies to all the code in that
2414file.
2415
041d709f
CY
2416*** `eval' takes a new optional argument `lexical' to choose the new lexical
2417binding instead of the old dynamic binding mode.
dfdb4cad 2418
041d709f
CY
2419*** Lexically scoped interpreted functions are represented with a new form
2420of function value which looks like (closure ENV ARGS &rest BODY).
2421
2422*** New macro `letrec' to define recursive local functions.
dfdb4cad
CY
2423
2424*** `defvar' and `defconst' now mark the variable as special (dynamic).
2425So do `defcustom' and other forms that call `defvar' as a subroutine.
2426
041d709f
CY
2427*** New function `special-variable-p' to check whether a variable is
2428declared as dynamically bound.
2429
88ed9e87
SM
2430*** The form ((lambda ...) ...) is deprecated.
2431
041d709f
CY
2432** An Emacs Lisp testing tool is now included.
2433Emacs Lisp developers can use this tool to write automated tests for
2434their code. See the ERT info manual for details.
2435
2436** Changes for bidirectional display and editing
f1816485 2437
041d709f 2438*** New function `current-bidi-paragraph-direction'.
7d301ae6 2439This returns the base direction of the paragraph at point.
041d709f 2440
041d709f 2441*** New function `bidi-string-mark-left-to-right'.
dfdb4cad
CY
2442Given a string containing characters from right-to-left scripts, this
2443function returns another string which can be safely inserted into a
2444buffer, such that any following text will be always displayed to the
7d301ae6
CY
2445right of that string. (This works by appending an invisible Unicode
2446"LEFT-TO-RIGHT MARK" character if the argument string might need it.)
041d709f 2447
7d301ae6 2448This is useful when the buffer has overall left-to-right paragraph
dfdb4cad
CY
2449direction and you need to insert a string whose contents are not known
2450in advance, without disrupting the layout of the line.
041d709f 2451
bee0fcef 2452** Window changes
dfdb4cad 2453
c4682d18
MR
2454*** Window tree functions are accessible in Elisp.
2455Functions are provided to return the parent, siblings or child windows
2456of any window including internal windows (windows not associated with a
2457buffer) in the window tree.
dfdb4cad 2458
24300f5f
CY
2459**** New function `window-valid-p' gives non-nil for live and internal
2460windows.
dfdb4cad 2461
24300f5f 2462**** Window manipulation can deal with internal windows.
c4682d18
MR
2463Many window handling functions like `split-window', `delete-window', or
2464`delete-other-windows' as well as the window resizing functions can now
2465act on any window including internal ones.
dfdb4cad 2466
c4682d18
MR
2467*** window-total-height/-width vs window-body-height/-width.
2468The function `window-height' has been renamed to `window-total-height'
2469and `window-width' has been renamed to `window-body-width'. The old
2470names are provided as aliases. Two new functions `window-total-width'
2471and `window-body-height' are provided.
dfdb4cad 2472
c4682d18
MR
2473*** Window parameters specific to window handling functions.
2474For each window you can specify a parameter to override the default
2475behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
2476and `delete-other-windows'. The variable `ignore-window-parameters'
2477allows to ignore processing such parameters.
dfdb4cad 2478
c4682d18 2479*** New semantics of third argument of `split-window'.
c4682d18
MR
2480The third argument of `split-window' has been renamed to SIDE and can be
2481set to any of the values 'below, 'right, 'above, or 'left to make the
2482new window appear on the corresponding side of the window that shall be
2483split. Any other value of SIDE will cause `split-window' to split the
2484window into two side-by-side windows as before.
dfdb4cad 2485
c4682d18 2486*** Window resizing functions.
487ffd7a 2487A new standard function for resizing windows called `window-resize' has
c4682d18
MR
2488been introduced. This and all other functions for resizing windows no
2489longer delete any windows when they become too small.
dfdb4cad 2490
b3c0dbfd
MR
2491*** Deleting the selected window now selects the most recently selected
2492live window on that frame instead.
dfdb4cad 2493
c4682d18
MR
2494*** `adjust-window-trailing-edge' adjustments.
2495`adjust-window-trailing-edge' can now deal with fixed-size windows and
2496is able to resize other windows if a window adjacent to the trailing
2497edge cannot be shrunk any more. This makes its behavior more similar to
2498that of Emacs 21 without compromising, however, its inability to delete
2499windows which was introduced in Emacs 22.
dfdb4cad 2500
c4682d18
MR
2501*** Window-local buffer lists.
2502Windows now have local buffer lists. This means that removing a buffer
2503from display in a window will preferably show the buffer previously
2504shown in that window with its previous window-start and window-point
2505positions. This also means that the same buffer may be automatically
2506shown twice even if it already appears in another window.
dfdb4cad 2507
bee0fcef
CY
2508*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2509which if non-nil requires the buffer to be displayed in the currently
2510selected window, signaling an error otherwise. If nil, another window
2511can be used, e.g. if the selected one is strongly dedicated.
dfdb4cad 2512
0a2132ba 2513*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
2514to `split-window-below' and `split-window-right' respectively.
2515The old names are kept as aliases.
dfdb4cad 2516
0a2132ba
CY
2517*** Display actions
2518
2519**** The second arg to `display-buffer' and `pop-to-buffer' is now
2520named ACTION, and takes a display action of the same form as
2521`display-buffer-base-action' (see Changes, above). A non-nil,
2522non-list value is treated specially, as the old meaning.
2523
2524**** New variable `display-buffer-overriding-action'.
2525
2526**** The procedure of `display-buffer' etc. to choose a window is
2527determined by combining `display-buffer-overriding-action',
2528`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2529and `display-buffer-fallback-action'. The second and fourth of these
2530are user-customizable variables.
2531
2532See the docstring of `display-buffer' for details.
bee0fcef 2533
20d2304d
CY
2534*** New functions `window-state-get' and `window-state-put'.
2535These functions allow to save and restore the state of an arbitrary
2536frame or window as an Elisp object.
2537
a2a25d24 2538** Completion
041d709f 2539
7d301ae6
CY
2540*** New variable `completion-extra-properties' used to specify extra
2541properties of the current completion:
a2a25d24
SM
2542- :annotate-function, same as the old completion-annotate-function.
2543- :exit-function, function to call after completion took place.
2544
7d301ae6
CY
2545*** Functions on `completion-at-point-functions' can return any of the
2546properties valid for `completion-extra-properties'.
a2a25d24 2547
7d301ae6 2548*** `completion-annotate-function' is obsolete.
a2a25d24 2549
620c53a6
SM
2550*** New `metadata' method for completion tables. The metadata thus returned
2551can specify various details of the data returned by `all-completions':
2552- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2553 used to select a style in completion-category-overrides.
2554- `annotation-function' to add annotations in *Completions*.
2555- `display-sort-function' to specify how to sort entries in *Completions*.
2556- `cycle-sort-function' to specify how to sort entries when cycling.
2557
7d301ae6
CY
2558*** `minibuffer-local-filename-must-match-map' is not used any more.
2559Instead, the bindings in `minibuffer-local-filename-completion-map'
2560are combined with `minibuffer-local-must-match-map'.
de09aa52
CY
2561
2562*** New variable `completing-read-function' allows overriding the
2563behavior of `completing-read'.
2564
f042970d 2565** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
2566text terminal display, via a char-table entry that is a cons cell.
2567
7d301ae6 2568** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
f6d62986
SM
2569Instead, the offending function is removed.
2570
b1f6fa26
CY
2571** New hook types
2572
2573*** New function `run-hook-wrapped' for running an abnormal hook by
2574passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 2575Like `run-hook-with-args-until-success', it stops at the first
5385447f 2576non-nil return value.
e7bc51d0 2577
b1f6fa26
CY
2578*** New macro `with-wrapper-hook' for running an abnormal hook as a
2579set of "wrapping" filters, similar to around advice.
54521c99
GM
2580(A version of this macro was actually added in Emacs 23.2 but was not
2581advertised at the time.)
f6d62986 2582
0b19b281 2583** Debugger changes
dfdb4cad 2584
0b19b281 2585*** New macro `condition-case-unless-debug' (this was actually added in
1be3ca5a 2586Emacs 23.1 as condition-case-no-debug, but not advertised)
dfdb4cad 2587
0b19b281 2588*** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
dfdb4cad 2589
0b19b281 2590*** Variable `stack-trace-on-error' removed.
dfdb4cad 2591
0b19b281
CY
2592*** The debugger can now "continue" from an error, which means it will
2593jump to the error handler as if the debugger had not been invoked
2594instead of jumping all the way to the top-level.
dfdb4cad 2595
0b19b281
CY
2596*** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2597This can be useful when `inhibit-quit' is set.
d6b1d521 2598
953cebf5 2599** The new function `server-eval-at' allows evaluation of Lisp forms on
37576acd 2600named Emacs server instances.
7deebf1b 2601
1b9f60cc
GM
2602** `call-process' and `call-process-region' allow a `(:file "file")' spec
2603to redirect STDOUT to a file.
7deebf1b 2604
7d301ae6
CY
2605** The function `format-time-string' now supports the %N directive,
2606for higher-resolution time stamps.
da97a9e6 2607
0b19b281 2608** New input reading functions
dfdb4cad 2609
0b19b281
CY
2610*** New function `read-char-choice' reads a restricted set of
2611characters, discarding any inputs not inside the set.
dfdb4cad 2612
0b19b281
CY
2613*** The command `read-color' now requires a match for a color name
2614or RGB triplet, instead of signaling an error if the user provides
2615invalid input.
dfdb4cad 2616
0b19b281 2617**** `facemenu-read-color' is now an alias for `read-color'.
3ef01959 2618
2e288d54
JB
2619** `image-library-alist' is renamed to `dynamic-library-alist'.
2620The variable is now used to load all kind of supported dynamic libraries,
2621not just image libraries. The previous name is still available as an
2622obsolete alias.
2623
0b19b281 2624** Syntax parsing changes
dfdb4cad 2625
0b19b281 2626*** New variable `syntax-propertize-function'.
04e2ce72 2627This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
2628This allows syntax-table properties to be set independently from font-lock:
2629just call syntax-propertize to make sure the text is propertized.
2630Together with this new variable come a new hook
2631syntax-propertize-extend-region-functions, as well as two helper functions:
2632syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
2633as-is; and syntax-propertize-rules which provides a new way to specify
2634syntactic rules.
dfdb4cad 2635
0b19b281 2636*** Syntax tables support a new "comment style c" additionally to style b.
a2e5caf7 2637
7d301ae6 2638** New hook `post-self-insert-hook', run after `self-insert-command'.
041d709f 2639
4e2db1fe 2640** frame-local variables cannot be let-bound any more.
041d709f 2641
15de15c6 2642** Major and minor mode changes
dfdb4cad 2643
0b19b281
CY
2644*** `set-auto-mode' now respects mode: local variables at the end of files,
2645as well as those in the -*- line.
dfdb4cad 2646
15de15c6
CY
2647*** `prog-mode' is a new major mode from which programming modes
2648should be derived.
dfdb4cad 2649
15de15c6
CY
2650**** `prog-mode-hook' can be used to enable features for programming
2651modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
2652on-the-fly spell checking for comments and strings.
dfdb4cad 2653
15de15c6
CY
2654*** New hook `change-major-mode-after-body-hook', run by
2655`run-mode-hooks' just before any other mode hooks.
dfdb4cad 2656
7a9a2fc6
GM
2657*** Enabled globalized minor modes can be disabled in specific major modes.
2658If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
2659major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
dfdb4cad 2660
feb8a83a 2661*** `define-minor-mode' accepts new keywords :variable, :after-hook.
f44379e7 2662
7d301ae6
CY
2663** File-handling changes
2664
7d301ae6 2665*** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
2666Trashing is performed if TRASH and `delete-by-moving-to-trash' are
2667both non-nil. Interactively, TRASH defaults to t, unless a prefix
2668argument is supplied (see Trash changes, above).
53967e09 2669
7d301ae6 2670*** New file predicates: `file-equal-p', `file-in-directory-p'.
ec70a47d 2671
4039c786
CY
2672** Tool-bars can display separators.
2673Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 2674i.e. via menu entries of the form `(menu-item "--")'.
9317e499 2675
00fe2df1
JL
2676** Image API
2677
18af70d0
CY
2678*** Animated images support (currently animated gifs only).
2679
2680**** `image-animated-p' returns non-nil if an image can be animated.
2681
2682**** `image-animate' animates a supplied image spec.
2683
2684**** `image-animate-timer' returns the timer object for an image that
2685is being animated.
00fe2df1 2686
7cb76fe0
GM
2687*** `image-extension-data' has been renamed to `image-metadata'.
2688The old name is an obsolete alias to the new one.
1546c559 2689
b4ac6e8c
GM
2690*** Image mode can view any image type that ImageMagick supports.
2691This requires Emacs to be built with ImageMagick support.
7d301ae6
CY
2692
2693**** New function `imagemagick-types', defined if ImageMagick support
2694is enabled, returns a list of image file extensions that your
2695ImageMagick installation supports.
2696
2697**** New function `imagemagick-register-types' enables ImageMagick
2698image types in Image mode and in `create-image' and other helper
2699functions.
2700
2701**** New option `imagemagick-types-inhibit' excludes certain
2702ImageMagick image types from `imagemagick-register-types'.
2703
7d301ae6
CY
2704**** With ImageMagick support, there are extra Image mode commands to
2705resize and rotate images: `image-transform-fit-to-height',
2706`image-transform-fit-to-width', `image-transform-set-rotation', and
2707`image-transform-set-scale'.
041d709f 2708
7d301ae6
CY
2709** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
2710passes it to the mail user agent function. This argument specifies an
2711action for returning to the caller after finishing with the mail. For
2712example, this is used by Rmail to optionally delete a mail window.
b4ac6e8c 2713
71c17aec 2714** XML and HTML parsing
483ab230
CY
2715If Emacs is compiled with libxml2 support, there are two new
2716functions: `libxml-parse-html-region' (which parses "real world" HTML)
2717and `libxml-parse-xml-region' (which parses XML). Both return an
2718Emacs Lisp parse tree.
4b9832a6 2719
7d301ae6 2720** Networking and encryption changes
e2574f2c 2721
7d301ae6
CY
2722*** `open-network-stream' can now be used to open an encrypted stream.
2723It now accepts an optional `:type' parameter for initiating a TLS
2724connection, directly or via STARTTLS. To do STARTTLS, additional
2725parameters (`:end-of-command', `:success', `:capabilities-command')
2726must also be supplied.
2727
2728*** New library gnutls.el.
dfdb4cad
CY
2729The new function `gnutls-available-p' returns non-nil if Emacs is
2730built with GnuTLS support. The main entry points are
2731`open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
2732these functions through `open-network-stream', because that can
7d301ae6
CY
2733upgrade connections through STARTTLS opportunistically or use plain
2734SSL, depending on your needs. For debugging, set `gnutls-log-level'
2735greater than 0.
2736
7d301ae6
CY
2737*** New primitive `secure-hash' that supports many secure hash algorithms:
2738md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
2739sha1.el has been removed. The `sha1' feature is provided by default.
71c17aec 2740
a6020335
MH
2741** Isearch
2742
2743*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
2744
9326ba26
CY
2745** Progress reporters can now "spin".
2746The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
2747now be nil, or omitted. This makes a "non-numeric" reporter. Each
2748time you call `progress-reporter-update' on that progress reporter,
2749with a nil or omitted VALUE argument, the reporter message is
2750displayed with a "spinning bar".
2751
3e214b50
JB
2752** New variable `revert-buffer-in-progress-p' is true while a buffer is
2753being reverted, even if the buffer has a local `revert-buffer-function'.
2754
001bf877
GM
2755** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
2756If delayed-warnings-list is non-nil, the command loop calls
7d301ae6
CY
2757`delayed-warnings-hook' after `post-command-hook'. At present, this
2758is only used by Emacs on some platforms to display warnings during
2759startup, which might otherwise not be noticed. This uses the
2760functions `display-delayed-warnings' and `collapse-delayed-warnings'.
001bf877 2761
6420d28b
CY
2762** rx.el has a new `group-n' construct for explicitly numbered groups.
2763
dac86404
GM
2764** New function `make-composed-keymap' that constructs a new keymap
2765from multiple input maps. You can use this to make a keymap that
2766inherits from multiple maps, eg:
2767 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 2768
c8f6ec5c
GM
2769** New function `string-prefix-p'.
2770(This was actually added in Emacs 23.2 but was not advertised at the time.)
2771
27f7ef2f 2772** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
2773This means that the empty symbol can now be read back. Also, #: by itself
2774(when not immediately followed by a possible symbol character) stands for
2775an empty uninterned symbol.
041d709f 2776
fead402d
CY
2777** New math functions `isnan', `copysign', `frexp', `ldexp'.
2778
7d301ae6 2779** The following functions and variables are obsolete:
041d709f 2780
05f77e38
GM
2781*** `tooltip-use-echo-area' is obsolete.
2782Rather than setting this to t, disable Tooltip mode instead.
2783
041d709f
CY
2784*** buffer-substring-filters is obsolete.
2785Use `filter-buffer-substring-functions' instead.
2786
2787*** `byte-compile-disable-print-circle' is obsolete.
2788
2789*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
2790Use `post-command-hook' instead.
2791
67e729a5
CY
2792*** `font-lock-maximum-size' is obsolete.
2793
eb199145 2794\f
93e0bed6 2795* Changes in Emacs 24.1 on Non-Free Operating Systems
d53a60a6 2796
7a22e700 2797** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
2798and also when HOME is set to C:\ by default.
2799
7a22e700 2800** New configure.bat options
04779484 2801
7a22e700 2802*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 2803
7a22e700 2804*** --distfiles specifies files to be included in binary distribution.
e2574f2c 2805
7a22e700
OK
2806*** --without-gnutls disables automatic GnuTLS detection.
2807
a0d363f4 2808*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 2809
0a19a6f8 2810** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 2811
1f5e1a16
GM
2812** The Lisp function `w32-default-color-map' is now obsolete.
2813(It is only used internally in the Emacs C code.)
5430d399 2814
1f5e1a16
GM
2815** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
2816reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 2817
ad7c802c
CY
2818** On Mac OS X, dragging a file into Emacs visits the file, like on
2819other platforms, rather than inserting its contents into the buffer.
2820
05197f40 2821\f
a933dad1 2822----------------------------------------------------------------------
5b87ad55 2823This file is part of GNU Emacs.
a933dad1 2824
ab73e885 2825GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 2826it under the terms of the GNU General Public License as published by
ab73e885
GM
2827the Free Software Foundation, either version 3 of the License, or
2828(at your option) any later version.
5b87ad55
GM
2829
2830GNU Emacs is distributed in the hope that it will be useful,
2831but WITHOUT ANY WARRANTY; without even the implied warranty of
2832MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2833GNU General Public License for more details.
a933dad1 2834
5b87ad55 2835You should have received a copy of the GNU General Public License
ab73e885 2836along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 2837
05197f40 2838\f
a933dad1
DL
2839Local variables:
2840mode: outline
2841paragraph-separate: "[ \f]*$"
2842end: