* lisp/emacs-lisp/byte-run.el (dont-compile): Declare obsolete.
[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** Removed inhibit-local-menu-bar-menus.
242
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243** frame-local variables that affect redisplay do not work any more.
244More specifically, the redisplay does not bother to check for a frame-local
245value when looking up variables.
246
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247** nil and "unbound" are indistinguishable in symbol-function.
248`symbol-function' never signals `void-function' any more.
249`fboundp' returns non-nil if the symbol was `fset' to nil.
250
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251** `defadvice' does not honor the `freeze' flag and cannot advise
252special-forms any more.
7db1bda8 253
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254** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
255VAR was bound to nil which was not tremendously useful and just lead to
256spurious warnings about an unused var.
257
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258** The return value of `backup-buffer' has changed.
259The second argument is no longer an SELinux context, instead it is an
260alist of extended attributes as returned by the new function
261`file-extended-attributes'. The attributes can be applied to another
262file using `set-file-extended-attributes'.
263
c57b2d76 264\f
97a1cd9d 265* Lisp Changes in Emacs 24.4
57618ecf 266
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267** Support for filesystem notifications.
268Emacs now supports notifications of filesystem changes, such as
269creation, modification, and deletion of files. This requires the
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270'inotify' API on GNU/Linux systems. On MS-Windows systems, this is
271supported for Windows XP and newer versions.
81606b10 272
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273** Changes in autorevert.el
274
275---
276*** If Emacs is compiled with file notification support, notifications
277are used instead of checking the time stamp of the files. You can
278disable this by setting the user option `auto-revert-use-notify' to
279nil. Alternatively, a regular expression of directories to be
280excluded from file notifications can be specified by
281`auto-revert-notify-exclude-dir-regexp'.
282
283---
284*** The new user option `auto-revert-remote-files' enables reversion
285of remote files when set to non-nil.
286
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287** Face changes
288
289*** The `face-spec-set' is now analogous to `setq' for face specs.
290Its third arg now accepts values specifying exactly which face spec to
291set (defface, custom, or user spec), and it directly sets the relevant
292property using the supplied face spec.
293
294*** Face specs set via Custom themes now replace the `defface' spec
295rather than inheriting from it (as do face specs set via Customize).
296
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297*** New face characteristic (supports :underline (:style wave))
298specifies whether or not the terminal can display a wavy line.
299
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300** Image API
301
302+++
303*** `image-animated-p' is now `image-multi-frame-p'.
304It returns non-nil for any image that contains multiple frames,
305whether or not it specifies a frame delay.
306
307+++
308*** When animating images that do not specify a frame delay,
309Emacs uses `image-default-frame-delay'.
310
311+++
312*** New functions `image-current-frame' and `image-show-frame' for getting
313and setting the current frame of a multi-frame image.
314
855b17af 315** time-to-seconds is not obsolete any more.
231d8498 316** New function special-form-p.
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317** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
318text-property on the first char.
319
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320** The `defalias-fset-function' property lets you catch calls to defalias
321and redirect them to your own function instead of `fset'.
322
70743157 323** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
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324When you edit DIR/FILE, Emacs normally creates a symbolic link
325DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
326is being edited. Formerly, if there was already a non-symlink file
327named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
328through DIR/.#FILE.9. These fallbacks have been removed, so that
329Emacs now no longer locks DIR/FILE in that case.
330
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331On file systems that do not support symbolic links, the lock is now a
332regular file with contents being what would have been in the symlink.
b5029e23 333
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334** The 9th element returned by `file-attributes' is now unspecified.
335Formerly, it was t if the file's gid would change if file were deleted
336and recreated. This value has been inaccurate for years on many
337platforms, and nobody seems to have noticed or cared.
338
339** The function `file-ownership-preserved-p' now has an optional
340argument GROUP which causes it check for file group too. This can be
341used in place of the 9th element of `file-attributes'.
342
343** New functions `group-gid' and `group-real-gid'.
344
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345** The 6th argument to `copy-file' has been renamed to
346`preserve-extended-attributes' as it now handles both SELinux context
347and ACL entries.
348
c57b2d76 349\f
97a1cd9d 350* Changes in Emacs 24.4 on Non-Free Operating Systems
95a32efb 351
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352+++
353** The "generate a backtrace on fatal error" feature now works on MS Windows.
354The backtrace is written to the 'emacs_backtrace.txt' file in the
355directory where Emacs was running.
356
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357+++
358** The variable `buffer-file-type' is no longer supported.
359Setting it has no effect, and %t in the mode-line format is ignored.
360Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
361modifying it has no effect.
362
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363---
364** Lock files now work on MS-Windows.
365This allows to avoid losing your edits if the same file is being
366edited in another Emacs session or by another user. See the node
367"Interlocking" in the Emacs User Manual for the details. To disable
368file locking, customize `create-lockfiles' to nil.
369
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370** Improved fullscreen support on Mac OS X.
371Both native (>= OSX 10.7) and "old style" fullscreen are supported.
372Customize `ns-use-native-fullscreen' to change style. For >= 10.7
373native is the default.
374
95a32efb 375\f
2a1e2476 376* Installation Changes in Emacs 24.3
b8df54ff 377
6bc66c10 378** The default X toolkit is now Gtk+ version 3.
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379If you don't pass `--with-x-toolkit' to configure, or if you use
380`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
381to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
d71a6517 382You can explicitly require a specific version by passing
823b2fb6 383`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
da3d2105 384
6bc66c10 385** New configure option `--enable-link-time-optimization', to utilize
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386an appropriate feature provided by GCC since version 4.5.0.
387
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388** New configure option `--without-all' to disable most of the optional
389features (image support, etc.) that are normally enabled by default.
b8df54ff 390
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391** New configure option `--enable-gcc-warnings' (for developing/debugging
392Emacs). If building with GCC, this enables compile-time checks that
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393warn/give errors about possibly-questionable C code. On a recent GNU
394system there should be no warnings; on older and on non-GNU systems
395the results may be useful to developers.
b8df54ff 396
823b2fb6 397** The configure option `--enable-use-lisp-union-type' has been
6bc66c10 398renamed to `--enable-check-lisp-object-type', as the resulting
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399Lisp_Object type no longer uses a union to implement the compile time
400check that this option enables.
401
823b2fb6 402** The configure option `--disable-maintainer-mode' has been removed,
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403as it was confusingly-named and rarely useful.
404
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405** The configure options `--program-prefix', `--program-suffix', and
406`--program-transform-name' apply to more than just the installed
407binaries. Now they also affect the man pages, icons, and the
408etc/emacs.desktop file; but not the info pages, since this would break
409links between the various manuals.
1a9c6830 410
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411** You can use `NO_BIN_LINK=t make install' to prevent the installation
412overwriting "emacs" in the installation bin/ directory with a link
6bc66c10 413to "emacs-VERSION".
823b2fb6 414
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415** Emacs uses libtinfo in preference to libncurses, if available.
416
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417** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
418/usr/pkg/lib to the linker search path. You must add them yourself if
419you want them.
420
6bc66c10 421** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
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422(from the bin and libexec directories, respectively). The former is
423no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
424
a1ed8b05 425\f
2a1e2476 426* Startup Changes in Emacs 24.3
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427
428** Emacs no longer searches for `leim-list.el' files beneath the standard
429lisp/ directory. There should not be any there anyway. If you have
823b2fb6 430been adding them there, put them somewhere else; e.g., site-lisp.
e5fcdb5e 431
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432** The `--no-site-lisp' command line option now works for Nextstep builds.
433
a1ed8b05 434\f
2a1e2476 435* Changes in Emacs 24.3
a1ed8b05 436
6bc66c10 437** Help
c89926a5 438
6bc66c10 439*** `C-h f' (`describe-function') can now perform autoloading.
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440When this command is called for an autoloaded function whose docstring
441contains a key substitution construct, that function's library is
442automatically loaded, so that the documentation can be shown
443correctly. To disable this, set `help-enable-auto-load' to nil.
444
445*** `C-h f' now reports previously-autoloaded functions as "autoloaded",
446even after their associated libraries have been loaded (and the
447autoloads have been redefined as functions).
448
6bc66c10 449** ImageMagick
cd996018 450
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451*** Images displayed via ImageMagick now support transparency and the
452:background image specification property.
cd996018 453
6bc66c10 454*** When available, ImageMagick support is automatically enabled.
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455It is no longer necessary to call `imagemagick-register-types'
456explicitly to install ImageMagick image types; that function is called
7d806bfe 457automatically at startup, or when customizing an imagemagick- option.
2f940384 458
c505aaeb 459*** Setting `imagemagick-types-inhibit' to t now disables the use of
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460ImageMagick to view images. (You must call `imagemagick-register-types'
461afterwards if you do not use customize to change this.)
2f940384 462
7afbaca4 463*** The new variable `imagemagick-enabled-types' also affects which
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464ImageMagick types are treated as images. The function
465`imagemagick-filter-types' returns the list of types that will be
466treated as images.
c505aaeb 467
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468** Minibuffer
469
470*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
471next and previous path separator, respectively.
c505aaeb 472
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473*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
474in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
475non-nil before enabling the mode.
476
477** Mode line
478
479*** New option `mode-line-default-help-echo' specifies the help text
480(shown in a tooltip or in the echo area) for any part of the mode line
481that does not have its own specialized help text.
482
483*** You can now click mouse-3 in the coding system indicator to invoke
484`set-buffer-file-coding-system'.
485
486** Server and client
2f940384 487
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488*** emacsclient now obeys string values for `initial-buffer-choice',
489if it is told to open a new frame without specifying any file to visit
490or expression to evaluate.
db80bdc8 491
f938eda9 492*** New option `server-auth-key' specifies a shared server key.
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493
494** Emacs now generates backtraces on fatal errors.
495On encountering a fatal error, Emacs now outputs a textual description
496of the fatal signal, and a short backtrace on platforms like glibc
5248293f 497that support backtraces.
2e2d2a13 498
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499** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
500This minor mode replaces `toggle-read-only', which is now obsolete.
501
502** Most `y-or-n' prompts now allow you to scroll the selected window.
503Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
504respectively, without exiting from the prompt.
505
506** In the Package Menu, newly-available packages are listed as "new",
507and sorted above the other "available" packages by default.
508
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509** If your Emacs was built from a bzr checkout, the new variable
510`emacs-bzr-version' contains information about the bzr revision used.
de6ff46d 511
6bc66c10 512** New option `create-lockfiles' specifies usage of lockfiles.
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513It defaults to t. Changing it to nil inhibits the creation of lock
514files (use this with caution).
dc0f75c8 515
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516** New option `enable-remote-dir-locals', if non-nil, allows directory-local
517variables on remote hosts.
21ffb35a 518
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519** The entry for PCL-CVS has been removed from the Tools menu.
520The PCL-CVS commands are still available via the keyboard.
521
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522** Using "unibyte: t" in Lisp source files is obsolete.
523Use "coding: raw-text" instead.
524
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525** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
526has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
527The previous binding, introduced in Emacs 24.1, was a mistake, because
528`C-c LETTER' bindings are reserved for user customizations.
529
6bc66c10 530** Internationalization
2f940384 531
f938eda9 532*** New language environment: Persian.
2f940384 533
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534*** New input method `vietnamese-vni'.
535
6bc66c10 536** Nextstep (GNUstep / Mac OS X) port
2f940384 537
823b2fb6 538*** Support for fullscreen and the frame parameter fullscreen.
2f940384 539
1a9c6830
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540*** A file dialog is used for open/save operations initiated from the
541menu/toolbar.
542
a1ed8b05 543\f
2a1e2476 544* Editing Changes in Emacs 24.3
c25df26e 545
6bc66c10 546** Search and Replace
d39d3c8e 547
f938eda9
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548*** Non-regexp Isearch now performs "lax" space matching.
549Each sequence of spaces in the supplied search string may match any
550sequence of one or more whitespace characters, as specified by the
551variable `search-whitespace-regexp'. (This variable is also used by a
823b2fb6 552similar existing feature for regexp Isearch.)
2f940384 553
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554*** New Isearch command `M-s SPC' toggles lax space matching.
555This applies to both ordinary and regexp Isearch.
2f940384 556
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557*** New option `replace-lax-whitespace'.
558If non-nil, `query-replace' uses flexible whitespace matching too.
559The default is nil.
2f940384 560
b9cb2387
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561*** Global `M-s _' starts a symbol (identifier) incremental search,
562and `M-s _' in Isearch toggles symbol search mode.
563`M-s c' in Isearch toggles search case-sensitivity.
564
6bc66c10 565** Navigation commands
48de8b12 566
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567*** New binding `M-g c' for `goto-char'.
568
569*** New binding `M-g TAB' for `move-to-column'.
570
571*** `M-g TAB' (`move-to-column') prompts for a column number if called
572interactively with no prefix arg. Previously, it moved to column 1.
573
574** New option `yank-handled-properties' allows processing of text
575properties on yanked text, in ways that are more general than just
576removing them (as is done by `yank-excluded-properties').
48de8b12 577
48de8b12
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578** New option `delete-trailing-lines' specifies whether
579M-x delete-trailing-whitespace should delete trailing lines at the end
580of the buffer. It defaults to t.
581
f938eda9 582** `C-u M-=' now counts lines/words/characters in the entire buffer.
826b3235 583
48de8b12
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584** `C-x 8 RET' is now bound to `insert-char', which is now a command.
585`ucs-insert' is now an obsolete alias for `insert-char'.
b2459884 586
48de8b12
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587** The `z' key no longer has a binding in most special modes.
588It used to be bound to `kill-this-buffer', but `z' is too easy to
589accidentally type.
f938eda9 590
6bc66c10
GM
591** New command `C-x r M-w' (`copy-rectangle-as-kill').
592It copies the region-rectangle as the last rectangle kill.
f938eda9 593
6bc66c10 594** Registers
f938eda9 595
823b2fb6 596*** `C-x r +' is now overloaded to invoke `append-to-register'.
f938eda9 597
f938eda9 598*** New option `register-separator' specifies the register containing
823b2fb6
GM
599the text to put between collected texts for use with
600M-x append-to-register and M-x prepend-to-register.
f1f4dba0 601
a1ed8b05 602\f
2a1e2476 603* Changes in Specialized Modes and Packages in Emacs 24.3
ae4969c2 604
6bc66c10 605** Common Lisp emulation (CL)
f938eda9 606
89660017 607*** CL's main entry is now (require 'cl-lib).
823b2fb6
GM
608`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
609i.e., all its definitions have the "cl-" prefix (and internal definitions
610use the "cl--" prefix).
7c1898a7 611
823b2fb6
GM
612If `cl' provided a feature under the name `foo', then `cl-lib'
613provides it under the name `cl-foo' instead; with the exceptions of the
614few `cl' definitions that had to use `foo*' to avoid conflicts with
615pre-existing Elisp entities. These have been renamed to `cl-foo'
616rather than `cl-foo*'.
7c1898a7 617
92246540 618The old `cl' is now deprecated and is mainly just a bunch of aliases that
823b2fb6 619provide the old, non-prefixed names. Some exceptions are listed below:
7c1898a7 620
89660017
SM
621*** `cl-flet' is not like `flet' (which is deprecated).
622Instead it obeys the behavior of Common-Lisp's `flet'.
e8693c96
GM
623In particular, in cl-flet function definitions are lexically scoped,
624whereas in flet the scoping is dynamic.
89660017
SM
625
626*** `cl-labels' is slightly different from `labels'.
823b2fb6
GM
627The difference is that it relies on the `lexical-binding' machinery
628(as opposed to the `lexical-let' machinery used previously) to capture
629definitions in closures, so such closures will only work if `lexical-binding'
630is in use.
89660017 631
f94b04fc 632*** `cl-letf' is not exactly like `letf'.
4ddedf94
GM
633The only difference is in details that relate to some deprecated usage
634of `symbol-function' in place forms.
f94b04fc 635
89660017 636*** `progv' was rewritten to use the `let' machinery.
823b2fb6
GM
637A side effect is that variables without corresponding values are bound
638to nil rather than being made unbound.
89660017 639
9512f820
GM
640*** The following methods of extending `setf' are obsolete
641(use features from gv.el instead):
642`define-modify-macro' (use `gv-letplace')
031b2ea7
GM
643`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
644`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
2b4da3ff 645`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
f94b04fc 646
6bc66c10 647** Diff mode
f938eda9 648
6bc66c10
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649*** Changes are now highlighted using the same color scheme as in
650modern VCSes. Deletions are displayed in red (new faces
651`diff-refine-removed' and `smerge-refined-removed', and new definition
652of `diff-removed'), insertions in green (new faces `diff-refine-added'
653and `smerge-refined-added', and new definition of `diff-added').
f938eda9 654
6bc66c10
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655*** The variable `diff-use-changed-face' defines whether to use the
656face `diff-changed', or `diff-removed' and `diff-added' to highlight
657changes in context diffs.
2f940384 658
6bc66c10
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659*** The new command `diff-delete-trailing-whitespace' removes trailing
660whitespace introduced by a diff.
f938eda9 661
6bc66c10
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662** Ediff now uses the same color scheme as Diff mode.
663
664** Python mode
665
666A new version of python.el, which provides several new features, including:
667per-buffer shells, better indentation, Python 3 support, and improved
668shell-interaction compatible with iPython (and virtually any other
669text based shell).
670
671*** Some user options have been replaced/renamed, including (old -> new):
672**** python-indent -> python-indent-offset
673**** python-guess-indent -> python-indent-guess-indent-offset
674**** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
675**** python-use-skeletons -> python-skeleton-autoinsert
676
677*** Some user options have been removed, including:
678
679**** `python-indent-string-contents': Strings are never indented.
680
681**** `python-honour-comment-indentation':
d5b1b1aa 682Comments are always considered as indentation markers.
6bc66c10
GM
683
684**** `python-continuation-offset': Indentation is automatically
685calculated in a pep8 compliant way depending on the context.
686
687**** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
688Have no direct mapping as the shell interaction is completely different.
689
690**** `python-python-command', `python-jython-command':
691Replaced by `python-shell-interpreter'.
692
693**** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
694`python-pdbtrack-minor-mode-string', `python-source-modes':
695No longer relevant.
696
697*** Some commands have been replaced (old -> new):
698**** python-insert-class -> python-skeleton-class
699**** python-insert-def -> python-skeleton-def
700**** python-insert-for -> python-skeleton-for
701**** python-insert-if -> python-skeleton-if
702**** python-insert-try/except -> python-skeleton-try
703**** python-insert-try/finally -> python-skeleton-try
704**** python-insert-while -> python-skeleton-while
705**** python-find-function -> python-nav-jump-to-defun
706**** python-next-statement -> python-nav-forward-sentence
707**** python-previous-statement -> python-nav-backward-sentence
708**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
709**** python-end-of-defun-function -> python-nav-end-of-defun
710**** python-send-buffer -> python-shell-send-buffer
711**** python-send-defun -> python-shell-send-defun
712**** python-send-region -> python-shell-send-region
713**** python-send-region-and-go -> emulate with python-shell-send-region
714and python-shell-switch-to-shell
715**** python-send-string -> python-shell-send-string
716**** python-switch-to-python -> python-shell-switch-to-shell
717**** python-describe-symbol -> python-eldoc-at-point
e76f0800 718
f938eda9
CY
719** D-Bus
720
f938eda9
CY
721*** New variables `dbus-compiled-version' and `dbus-runtime-version'.
722
f938eda9
CY
723*** The D-Bus object manager interface is implemented.
724
f938eda9
CY
725*** Variables of type :(u)int32 and :(u)int64 accept floating points,
726if their value does not fit into Emacs's integer range.
727
823b2fb6
GM
728*** The function `dbus-call-method' is now non-blocking.
729It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
f938eda9 730
823b2fb6 731*** Signals can also be sent as unicast messages.
f938eda9 732
f938eda9 733*** The argument list of `dbus-register-signal' has been extended,
6bc66c10 734according to the new match rule types of D-Bus.
f938eda9 735
f938eda9
CY
736*** `dbus-init-bus' supports private connections.
737
f938eda9
CY
738*** There is a new function `dbus-setenv'.
739
6bc66c10
GM
740** `desktop-path' no longer includes the "." directory.
741Desktop files are now located in ~/.emacs.d by default.
f938eda9
CY
742
743** Dired
2f940384 744
f938eda9
CY
745*** `dired-do-async-shell-command' executes each file sequentially
746if the command ends in `;' (when operating on multiple files).
747Otherwise, it executes the command on each file in parallel.
2f940384 748
823b2fb6
GM
749*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
750`dired-do-chown', and `dired-do-touch' yanks the attributes of the
f938eda9 751file at point.
2f940384 752
f938eda9 753*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
823b2fb6 754`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
f938eda9 755mark/unmark/flag all files in the active region.
2f940384 756
f938eda9
CY
757*** The minibuffer default for `=' (`dired-diff) has changed.
758It is now the backup file for the file at point, if one exists.
759In Transient Mark mode the default is the file at the active mark.
2f940384 760
f938eda9
CY
761*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
762The global binding for `M-=', `count-words-region' is in effect.
763
02969baf
GM
764** ERC
765
6e5e9b70
GM
766*** New module "notifications", which can send a notification when you
767receive a private message or your nickname is mentioned.
02969baf
GM
768
769*** ERC will look up server/channel names via auth-source and use any
770channel keys found.
f938eda9 771
274f5de6
GM
772*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
773only applies to messages sent by lurkers.
f925b109 774
6bc66c10 775** reStructuredText mode
f938eda9 776
6bc66c10
GM
777*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
778fontification, comment handling, and customization have all been revised
779and improved.
f938eda9 780
6bc66c10 781*** Support for `imenu' and `which-function-mode'.
f938eda9 782
6bc66c10
GM
783*** The reStructuredText syntax is more closely covered.
784Sphinx support has been improved.
f938eda9 785
6bc66c10 786*** `rst-insert-list' inserts new list or continues existing lists.
f938eda9 787
6bc66c10 788*** A negative prefix argument always works for `rst-adjust'.
f938eda9 789
6bc66c10 790*** The window configuration is reset after displaying a TOC.
bc7be45d 791
6bc66c10 792*** The constant `rst-version' describes the rst.el package version.
358c19d9 793
dba3cda3
GM
794** Ruby mode
795
796*** Support for percent literals and recognition of regular expressions
797in method calls without parentheses with more methods, including Cucumber
798steps definitions.
799
800*** Improved syntax highlighting and indentation.
801
802*** New command `ruby-toggle-block', bound to `C-c {'.
803
804*** Some non-standard keybindings/commands have been removed:
805
806**** `ruby-electric-brace'; use `electric-indent-mode' instead.
807
808**** `ruby-mark-defun'; use `mark-defun'.
809
810**** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
811appropriate settings for the variables `beginning-of-defun-function'
812and `end-of-defun-function'.
813
814**** Non-standard keybindings for `backward-kill-word', `comment-region',
815`reindent-then-newline-and-indent' and `newline' have been removed.
816
6bc66c10 817** Shell Script mode
40d8bcb8 818
6bc66c10 819*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
40d8bcb8 820
6bc66c10 821*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
40d8bcb8 822
6bc66c10 823*** `sh-use-smie' lets you choose a new indentation and navigation code.
40d8bcb8 824
6bc66c10 825** VHDL mode
40d8bcb8 826
6bc66c10 827*** The free software compiler GHDL is supported (and now the default).
40d8bcb8 828
6bc66c10 829*** Support for the VHDL-AMS packages has been added/updated.
40d8bcb8 830
6bc66c10 831*** Updated to the 2002 revision of the VHDL standard.
40d8bcb8 832
6bc66c10 833*** Accepts \r and \f as whitespace.
40d8bcb8 834
6bc66c10 835** Apropos
40d8bcb8 836
6bc66c10
GM
837*** The faces used by Apropos are now directly customizable.
838These faces are named `apropos-symbol', `apropos-keybinding', and so on;
839see the `apropos' Custom group for details.
d13c8be6 840
6bc66c10
GM
841*** The old options whose values specified faces to use have been removed
842(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
d13c8be6 843
6bc66c10 844** Buffer Menu
d13c8be6 845
6bc66c10 846*** This package has been rewritten to use Tabulated List mode.
d13c8be6 847
6bc66c10
GM
848*** Option `Buffer-menu-buffer+size-width' is now obsolete.
849Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
d13c8be6 850
86e100a6
GM
851** Calc
852
853*** Algebraic simplification mode is now the default.
854To restrict to the limited simplifications given by the former
855default simplification mode, use `m I'.
856
6bc66c10 857** Calendar
d13c8be6 858
6bc66c10
GM
859*** You can customize the header text that appears above each calendar month.
860See the variable `calendar-month-header'.
d13c8be6 861
6bc66c10 862*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
ee97deee 863
6bc66c10
GM
864*** The calendars produced by cal-html include holidays.
865Customize `cal-html-holidays' to change this.
8b0823d6 866
0058cae2
GM
867** CEDET
868
869*** The major modes from the parser generators "Bovine" and "Wisent"
870are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
871are in `auto-mode-alist', and the corresponding manuals are included.
872
873*** EDE
874
875**** Menu support for the "Configuration" feature. This allows users to
876choose the active configuration (such as debug or install) from the menu.
877
878**** New command `ede-set' to interactively set project-local variables.
879
880**** Support for compiling, debugging, and running in "generic" projects.
881
882**** Autoconf editing support for M4 macros with complex arguments.
883
884**** Compilation support for the "linux" project type.
885
886**** "simple" projects have been removed; use "generic" projects instead.
887
888*** Semantic
889
890**** Support for parsing #include statements inside a namespace in C/C++.
891
892**** Improved support for 'extern "C"' declarations in C/C++.
893
894**** The ability to ignore more common special C/C++ preprocessor symbols,
895such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
896If available, include cdefs.h as an additional source of preprocessor symbols.
897
898**** Improved C/C++ function pointer parsing.
899
900**** In Python, support for converting imports to include file names.
901
902**** Ability to dynamically determine the Python load path.
903
904**** Support for the Python 'WITH' and 'AT' keywords.
905
906**** Improved tooltip completion.
907
908*** SRecode
909
910**** The SRecode manual is now included.
911
912**** Tag generation supports constructor/destructor settings and system
913include differentiation.
914
915**** Addition of 'Framework' support: Frameworks are specified when a
916particular kind of library (such as Android) is needed in a common language
917mode (like Java).
918
919**** Support for nested templates and let variables override based on priority.
920
921**** Support for merging tables from multiple related modes, such as
922default -> c++ -> arduino.
923
6bc66c10 924** Compile has a new option `compilation-always-kill'.
42917e79 925
6bc66c10 926** Customize
35d98877 927
6bc66c10 928*** `custom-reset-button-menu' now defaults to t.
35d98877 929
6bc66c10
GM
930*** Non-option variables are never matched in `customize-apropos' and
931`customize-apropos-options' (i.e., the prefix argument does nothing for
932these commands now).
782fbf2a 933
f938eda9 934** Term
782fbf2a 935
823b2fb6
GM
936*** The variables `term-default-fg-color' and `term-default-bg-color'
937are now deprecated in favor of the customizable face `term'.
fc72b15c 938
02969baf
GM
939*** You can customize how to display ANSI terminal colors and styles
940by customizing the corresponding `term-color-<COLOR>',
941`term-color-underline' and `term-color-bold' faces.
cf20dee0 942
05ecb497 943** Tramp
2f940384 944
02969baf 945*** The syntax has been extended in order to allow ad-hoc proxy definitions.
05ecb497 946
823b2fb6 947*** Remote processes are now also supported on remote MS-Windows hosts.
05ecb497 948
ce7b18ec 949** URL
2f940384 950
ce7b18ec
CY
951*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
952Previously, this slot stored semicolon-separated attribute-value pairs
953appended to some imap URLs, but this is not compatible with RFC 3986.
823b2fb6 954So now the `filename' slot stores the entire path and query components,
ce7b18ec 955and the `attributes' slot is always nil.
2f940384 956
ce7b18ec
CY
957*** New function `url-encode-url' for encoding a URI string.
958The `url-retrieve' function now uses this to encode its URL argument,
959in case that is not properly encoded.
960
6bc66c10
GM
961** notifications.el supports now version 1.2 of the Notifications API.
962The function `notifications-get-capabilities' returns the supported
963server properties.
f938eda9 964
6bc66c10
GM
965** Flymake uses fringe bitmaps to indicate errors and warnings.
966See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
967`flymake-warning-bitmap'.
f938eda9 968
6bc66c10
GM
969** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
970specifying URL types that should be converted to remote file names at
971the FFAP prompt. The default is now '("ftp").
f938eda9 972
6bc66c10
GM
973** New Ibuffer `derived-mode' filter, bound to `/ M'.
974The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
f938eda9 975
6bc66c10
GM
976** New option `mouse-avoidance-banish-position' specifies where the
977`banish' mouse avoidance setting moves the mouse.
ce7b18ec 978
6bc66c10
GM
979** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
980closing brackets to be aligned with the line of the opening bracket.
f938eda9 981
6bc66c10 982** In Proced mode, new command `proced-renice' renices marked processes.
f938eda9 983
6bc66c10
GM
984** New option `async-shell-command-buffer' specifies the buffer to use
985for a new asynchronous `shell-command' when the default output buffer
986`*Async Shell Command*' is already in use.
f938eda9 987
6bc66c10
GM
988** SQL mode has a new option `sql-db2-escape-newlines'.
989If non-nil, newlines sent to the command interpreter will be escaped
990by a backslash. The default does not escape the newlines and assumes
991that the sql statement will be terminated by a semicolon.
f938eda9 992
6bc66c10
GM
993** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
994(and modes that derive from it), sorts the column at point, or the Nth
995column if a numeric prefix argument is given.
f938eda9 996
02969baf 997** `which-func-modes' now defaults to t, so Which Function mode, when
05b621a6 998enabled, applies to all applicable major modes.
f938eda9 999
6bc66c10 1000** `winner-mode-hook' now runs when the mode is disabled, as well as when
823b2fb6 1001it is enabled.
f938eda9 1002
6bc66c10
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1003** Follow mode no longer works by using advice.
1004The option `follow-intercept-processes' has been removed.
1005
1006** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
f938eda9 1007
d1069532
SM
1008** Hooks renamed to avoid obsolete "-hooks" suffix:
1009*** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1010*** semantic-change-hooks -> semantic-change-functions
1011*** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1012*** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1013*** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1014*** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1015*** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1016*** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1017*** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1018*** rcirc-activity-hooks -> rcirc-activity-functions
1019*** rcirc-print-hooks -> rcirc-print-functions
1020*** dbus-event-error-hooks -> dbus-event-error-functions
1021*** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1022*** checkdoc-style-hooks -> checkdoc-style-functions
1023*** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1024*** archive-extract-hooks -> archive-extract-hook
1025*** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1026*** hfy-post-html-hooks -> hfy-post-html-hook
1027*** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1028*** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1029*** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1030*** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
f938eda9 1031
6bc66c10 1032** Obsolete packages
2f940384 1033
797e6e88
SM
1034*** assoc.el
1035In most cases, assoc+member+push+delq work just as well.
1036And in any case it's just a terrible package: ugly semantics, terrible
1037inefficiency, and not namespace-clean.
3c74813a 1038*** bruce.el
b4617547 1039*** cust-print.el
daed4003 1040*** ledit.el
82f289a4 1041*** mailpost.el
d57de7fe 1042*** mouse-sel.el
3c74813a 1043*** patcomp.el
1a9c6830 1044
a1ed8b05 1045\f
2a1e2476 1046* Incompatible Lisp Changes in Emacs 24.3
b4d3bc10 1047
6bc66c10
GM
1048** Docstrings starting with `*' no longer indicate user options.
1049Only variables defined using `defcustom' are considered user options.
1050The function `user-variable-p' is now an obsolete alias for
1051`custom-variable-p'.
090cf9db 1052
6bc66c10
GM
1053** The return values of `defalias', `defun' and `defmacro' have changed,
1054and are now undefined. For backwards compatibility, `defun' and
1055`defmacro' currently return the name of the newly defined
1056function/macro, but this should not be relied upon.
090cf9db 1057
823b2fb6
GM
1058** `random' by default now returns a different random sequence in
1059every Emacs run. Use `(random S)', where S is a string, to set the
0e23ef9d
PE
1060random seed to a value based on S, in order to get a repeatable
1061sequence in later calls.
1062
d32e47af
LM
1063** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1064that substring is inserted literally even if the LITERAL arg is
1065non-nil, instead of causing an error to be signaled.
1066
2cec368c
MR
1067** `select-window' now always makes the window's buffer current.
1068It does so even if the window was selected before.
1069
6bc66c10
GM
1070** The function `x-select-font' can return a font spec, instead of a
1071font name as a string. Whether it returns a font spec or a font name
1072depends on the graphical library.
bbf908bc 1073
eeddc531
CY
1074** `face-spec-set' no longer sets frame-specific attributes when the
1075third argument is a frame (that usage was obsolete since Emacs 22.2).
1076
6bc66c10 1077** `set-buffer-multibyte' now signals an error in narrowed buffers.
a59d531e 1078
ab7f1c43
GM
1079** The CL package's `get-setf-method' function no longer exists.
1080Generalized variables are now part of core Emacs Lisp, and implemented
1081differently to the way cl.el used to do it. It is not possible to
1082define a compatible replacement for `get-setf-method'. See the file
1083gv.el for internal details of the new implementation.
1084
6bc66c10
GM
1085** The arguments of `dbus-register-signal' are no longer just strings,
1086but keywords or keyword-string pairs. The old argument list will
1087still be supported for Emacs 24.x.
72b255c7 1088
6bc66c10 1089** Miscellaneous name changes
823b2fb6
GM
1090Some Lisp symbols have been renamed to correct their spelling,
1091or to be more consistent with standard Emacs terminology.
72b255c7 1092
72b255c7 1093*** Renamed functions
72b255c7
PE
1094**** hangul-input-method-inactivate -> hangul-input-method-deactivate
1095**** inactivate-input-method -> deactivate-input-method
1096**** quail-inactivate -> quail-deactivate
1097**** robin-inactivate -> robin-deactivate
1098**** viper-inactivate-input-method -> viper-deactivate-input-method
1099**** viper-inactivate-input-method-action ->
1100 viper-deactivate-input-method-action
1101**** ucs-input-inactivate -> ucs-input-deactivate
1102
1103*** Renamed hooks
1104The old hooks are still supported for backward compatibility, but they
1105are deprecated and will be removed eventually.
72b255c7
PE
1106**** input-method-inactivate-hook -> input-method-deactivate-hook
1107**** robin-inactivate-hook -> robin-deactivate-hook
1108**** quail-inactivate-hook -> quail-deactivate-hook
1109
6bc66c10 1110*** Renamed variables
72b255c7
PE
1111**** follow-deactive-menu -> follow-inactive-menu
1112**** inactivate-current-input-method-function ->
1113 deactivate-current-input-method-function
1114
02969baf
GM
1115** Some obsolete functions, variables, and faces have been removed:
1116*** `last-input-char', `last-command-char', `unread-command-char'
78f3273a
CY
1117*** `facemenu-unlisted-faces'
1118*** `rmail-decode-mime-charset'
a5f2b6ec
CY
1119*** `iswitchb-read-buffer'
1120*** `sc-version', `sc-submit-bug-report'
1121*** `set-char-table-default'
02969baf 1122*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
a5f2b6ec 1123*** `compile-internal'
02969baf 1124*** `modeline'
59f7af81 1125*** `mode-line-inverse-video'
02969baf 1126*** `follow-mode-off-hook'
a5f2b6ec 1127*** `cvs-commit-buffer-require-final-newline'
63820c5c 1128(use `log-edit-require-final-newline' instead)
a5f2b6ec
CY
1129*** `cvs-changelog-full-paragraphs'
1130(use `log-edit-changelog-full-paragraphs' instead)
1131*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1132*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1133*** `vc-master-templates' (use `vc-handled-backends' instead)
1134*** `vc-checkout-carefully'
78f3273a 1135
a1ed8b05 1136\f
93e0bed6 1137* Lisp Changes in Emacs 24.3
ef24141c 1138
2ee3d7f0 1139** CL-style generalized variables are now in core Elisp.
f938eda9 1140`setf' is autoloaded; `push' and `pop' accept generalized variables.
ebdbfb95
GM
1141You can define your own generalized variables using `gv-define-simple-setter',
1142`gv-define-setter', etc.
2ee3d7f0 1143
6bc66c10
GM
1144** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1145This can significantly speed up execution of non-byte-compiled code,
1146but can also bump into previously unnoticed cyclic dependencies.
1147These are generally harmless: they will simply cause the macro calls
1148to be left for later expansion (as before), but will result in a
1149warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1150You may wish to restructure your code so this does not happen.
1151
1152** New sampling-based Elisp profiler.
1153Try M-x profiler-start, do some work, and then call M-x profiler-report.
1154When finished, use M-x profiler-stop. The sampling rate can be based on
1155CPU time or memory allocations.
1156
500fcedc
SM
1157** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1158The interpretation of the DECLS is determined by `defun-declarations-alist'.
1159
6bc66c10
GM
1160** New macros `setq-local' and `defvar-local'.
1161
1162** Face underlining can now use a wave.
2f940384 1163
6bc66c10 1164** `read-regexp' has a new argument HISTORY; the first argument PROMPT
cd996018 1165of `read-regexp' accepts a string ending with a colon and space, and its
823b2fb6 1166second argument DEFAULTS can be a list of strings accessible via `M-n'
cd996018
CY
1167in the minibuffer ahead of other hard-coded useful regexp-related values.
1168More commands use `read-regexp' now to read their regexp arguments.
1169
f938eda9 1170** Completion
500fcedc 1171
f938eda9
CY
1172*** New function `completion-table-with-quoting' to handle completion
1173in the presence of quoting, such as file completion in shell buffers.
f95e9344 1174
f938eda9
CY
1175*** New function `completion-table-subvert' to use an existing completion
1176table, but with a different prefix.
1177
6bc66c10 1178** Debugger
f95e9344 1179
f938eda9
CY
1180*** New error type and new function `user-error'.
1181These do not trigger the debugger.
f95e9344 1182
57fc0fee
GM
1183*** New option `debugger-bury-or-kill', saying what to do with the
1184debugger buffer when exiting debug.
45b82ad0
SM
1185
1186*** Set `debug-on-message' to enter the debugger when a certain
1187message is displayed in the echo area. This can be useful when trying
1188to work out which code is doing something.
2f940384 1189
45b82ad0
SM
1190*** New var `inhibit-debugger', automatically set to prevent accidental
1191recursive invocations.
fa2bcf43 1192
6bc66c10 1193** Window handling
2f940384 1194
6bc66c10
GM
1195*** New command `fit-frame-to-buffer' adjusts the frame height to
1196fit the contents.
2f940384 1197
6bc66c10
GM
1198*** The command `fit-window-to-buffer' can adjust the frame height
1199if the new option `fit-frame-to-buffer' is non-nil.
8e17c9ba 1200
7fe37cfc
GM
1201*** New macro `with-temp-buffer-window', similar to
1202`with-output-to-temp-buffer'.
fa2bcf43 1203
8e17c9ba
MR
1204*** `temp-buffer-resize-mode' no longer resizes windows that have been
1205reused.
c5e28e39 1206
823b2fb6 1207*** New option `switch-to-buffer-preserve-window-point' to restore a
43bcfda6 1208window's point when switching buffers.
7c82753d 1209
6bc66c10
GM
1210*** New display action alist entries `window-height' and `window-width'
1211specify the size of new windows created by `display-buffer'.
1212
1213*** New display action alist entry `pop-up-frame-parameters', if
1214non-nil, specifies frame parameters to give any newly-created frame.
7c82753d 1215
fa2bcf43
MR
1216*** New display action alist entry `inhibit-switch-frame', if non-nil,
1217tells display action functions to avoid changing which frame is
1218selected.
2f940384 1219
fa2bcf43
MR
1220*** New display action alist entry `previous-window', if non-nil,
1221specifies window to reuse in `display-buffer-in-previous-window'.
2f940384 1222
6bc66c10
GM
1223*** New display action functions `display-buffer-below-selected',
1224and `display-buffer-in-previous-window'.
1225
1226*** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1227now accept a third argument to avoid choosing the selected window.
1228
1229*** Additional values recognized for option `window-combination-limit'.
5938d519 1230
77f1f99c
CY
1231*** The following variables are obsolete, as they can be replaced by
1232appropriate entries in the `display-buffer-alist' function introduced
1233in Emacs 24.1:
823b2fb6 1234**** `dired-shrink-to-fit'
77f1f99c 1235**** `display-buffer-reuse-frames'
823b2fb6 1236**** `display-buffer-function'
77f1f99c 1237**** `special-display-buffer-names'
823b2fb6 1238**** `special-display-frame-alist'
77f1f99c 1239**** `special-display-function'
823b2fb6 1240**** `special-display-regexps'
77f1f99c 1241
ab0fa4e4 1242** Time
2f940384 1243
ab0fa4e4
PE
1244*** `current-time-string' no longer requires that its argument's year
1245must be in the range 1000..9999. It now works with any year supported
1246by the underlying C implementation.
2f940384 1247
f938eda9
CY
1248*** `current-time' now returns extended-format time stamps
1249(HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1250PSEC is typically a multiple of 1000 on current machines. Other
823b2fb6
GM
1251functions that use this format, such as `file-attributes' and
1252`format-time-string', have been changed accordingly. Old-format time
f938eda9 1253stamps are still accepted.
2f940384 1254
823b2fb6 1255*** The format of timers in `timer-list' and `timer-idle-list' is now
f938eda9
CY
1256[TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1257The PSECS slot is new, and uses picosecond resolution. It can be
823b2fb6 1258accessed via the new `timer--psecs' accessor.
2f940384 1259
c4132fd4
PE
1260*** Last-modified time stamps in undo lists now are of the form
1261(t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1262
0058cae2
GM
1263** EIEIO
1264
1265*** Improved security when handling persistent objects:
1266
1267**** `eieio-persistent-read' now features optional arguments for specifying
1268the class to load, as well as a flag stating whether subclasses are allowed;
1269if provided, other classes will be rejected by the reader. For
1270compatibility with existing code, if the class is omitted only a
1271warning is issued.
1272
1273**** New specialized reader for pulling in classes and signaling errors
1274without evaluation of suspicious code.
1275
1276**** All slots that contain objects must have a :type. Slots with lists
1277of objects must use a new type predicate for a list of an object type.
1278
1279*** Support for `find-function' and similar utilities, through the addition
1280of filename support to generated symbols.
1281
f938eda9 1282** Floating point functions now always return special values like NaN,
823b2fb6 1283instead of signaling errors, if given invalid args; e.g., (log -1.0).
f938eda9
CY
1284Previously, they returned NaNs on some platforms but signaled errors
1285on others. The affected functions are acos, asin, tan, exp, expt,
1286log, log10, sqrt, and mod.
1287
6bc66c10 1288** New fringe bitmap `exclamation-mark'.
f938eda9 1289
6bc66c10
GM
1290** Miscellaneous changes to special forms and macros
1291
1292*** `defun' and `defmacro' are now macros rather than special forms.
1293
1294*** `kbd' is now a function rather than a macro.
1295
1296** Miscellaneous new functions
1297
1298*** `set-temporary-overlay-map' sets up a temporary keymap that
1299takes precedence over most other maps for a short while (normally one key).
f938eda9 1300
847a0561 1301*** `autoloadp' tests if its argument is an autoloaded object.
2f940384 1302
847a0561 1303*** `autoload-do-load' performs the autoloading operation.
2f940384 1304
f938eda9 1305*** `buffer-narrowed-p' tests if the buffer is narrowed.
2f940384 1306
f938eda9 1307*** `file-name-base' returns a file name sans directory and extension.
2f940384 1308
f938eda9 1309*** `function-get' fetches a function property, following aliases.
c990426a 1310
f938eda9 1311*** `posnp' tests if an object is a `posn'.
f938eda9 1312
f938eda9 1313*** `system-users' returns the user names on the system.
547d6865 1314
f938eda9 1315*** `system-groups' returns the group names on the system.
f938eda9 1316
f938eda9 1317*** `tty-top-frame' returns the topmost frame of a text terminal.
c990426a 1318
f938eda9 1319** The following functions and variables are obsolete:
847a0561 1320*** `automount-dir-prefix' (use `directory-abbrev-alist')
f938eda9 1321*** `buffer-has-markers-at'
1a9c6830 1322*** `macro-declaration-function' (use `macro-declarations-alist')
847a0561 1323*** `window-system-version' (provides no useful information)
93cacb6d 1324*** `dired-pop-to-buffer' (use `dired-mark-pop-up')
0e2ae83d 1325*** `query-replace-interactive'
49238e7f 1326*** `font-list-limit' (has had no effect since Emacs < 23)
86aa551c 1327
adce950d 1328\f
93e0bed6 1329* Changes in Emacs 24.3 on Non-Free Operating Systems
9078ead6 1330
4e98ad15 1331** Cygwin builds can use the native MS Windows user interface.
823b2fb6 1332Pass `--with-w32' to configure. The default remains the X11 interface.
53a63be6 1333
1a9c6830 1334** Two new functions are available in Cygwin builds:
6e9f7997
DC
1335`cygwin-convert-file-name-from-windows' and
1336`cygwin-convert-file-name-to-windows'. These functions allow Lisp
1337code to access the Cygwin file-name mapping machinery to convert
1338between Cygwin and Windows-native file and directory names.
de6e3a60 1339
4e98ad15 1340** When invoked with the -nw switch to run on the Windows text-mode terminal,
1ab0c851 1341Emacs now supports `mouse-highlight', help-echo (in the echo area), and
4e98ad15
GM
1342`mouse-autoselect-window'.
1343
1a9c6830 1344** On MS Windows Vista and later Emacs now supports symbolic links.
4e98ad15 1345
823b2fb6 1346** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
4e98ad15
GM
1347support for libxml2, even if its presence is detected.
1348
4e98ad15
GM
1349** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
1350
823b2fb6 1351** On Mac OS X, configure no longer automatically adds the Fink "/sw"
4e98ad15
GM
1352directories to the search path. You must add them yourself if you want them.
1353
2a1e2476
GM
1354\f
1355* Changes in Emacs 24.2
1356
5190da91 1357** This is mainly a bug-fix release.
6dad7178 1358
9078ead6 1359\f
eb199145 1360* Installation Changes in Emacs 24.1
09e18d03 1361
31fd3586
GM
1362** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1363to configure. Note that other libraries used by Emacs, RSVG and GConf,
1364also depend on Gtk+. You can disable them with --without-rsvg and
1365--without-gconf.
338648ad 1366
31fd3586
GM
1367** Emacs can be compiled with GnuTLS support.
1368This happens by default if a suitably recent version of the library is
1369found at build time. To prevent this, use the configure option
1370`--without-gnutls'. See below for GnuTLS features.
338648ad 1371
31fd3586
GM
1372** Emacs can be compiled with SELinux support.
1373This happens by default if a suitably recent version of the library is
1374found at build time. To prevent this, use the configure option
1375`--without-selinux'. See below for SELinux features.
aded53ff 1376
31fd3586
GM
1377** Emacs can be compiled with ImageMagick support.
1378This happens by default if a suitably recent version of the library is
1379found at build time. To prevent this, use the configure option
1380`--without-imagemagick'. See below for ImageMagick features.
c1f10868 1381This feature is not available for the Nextstep or MS ports.
d9170db5 1382
043efd56
GM
1383** Emacs can be compiled with libxml2 support.
1384This happens by default if a suitably recent version of the library is
1385found at build time. To prevent this, use the configure option
1386`--without-xml2'. See below for libxml2 features.
1387
7d301ae6
CY
1388** By default, the installed Info and man pages are compressed.
1389You can disable this by configuring --without-compress-info.
1390
7d301ae6 1391** New configure option --with-wide-int.
81eafe29 1392With it, Emacs integers typically have 62 bits, even on 32-bit machines.
0a768890
PE
1393On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1394to about 2 GiB.
81eafe29 1395
7d301ae6 1396** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
31fd3586
GM
1397These provide no new functionality, they just remove the need to edit
1398lib-src/Makefile by hand in order to use the associated features.
1399
7d301ae6 1400** New configure option --enable-use-lisp-union-type.
31fd3586
GM
1401This is only useful for Emacs developers to debug certain types of bugs.
1402This is not a new feature; only the configure flag is new.
041d709f
CY
1403
1404** The standalone programs digest-doc and sorted-doc are removed.
1405Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1406
041d709f
CY
1407** The standalone program `fakemail' is removed.
1408If you need it, feedmail.el provides a superset of the functionality.
1409
0bfd685e 1410\f
eb199145 1411* Startup Changes in Emacs 24.1
4a263588 1412
198a7a97 1413** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
adbf62ff
GM
1414command line arguments, and the EMACS_UNIBYTE environment variable, no
1415longer have any effect. (They were declared obsolete in Emacs 23.)
198a7a97 1416
66b7b0fe 1417** New command line option `--no-site-lisp' removes site-lisp directories
1b5e5b0c
GM
1418from load-path. -Q now implies this. This option does not affect the
1419EMACSLOADPATH environment variable (and hence has no effect for
c8d59ba3 1420Nextstep builds).
66b7b0fe 1421
0bfd685e 1422\f
eb199145 1423* Changes in Emacs 24.1
7841339b 1424
a2a25d24 1425** Completion
fdeb32ec 1426
dfdb4cad
CY
1427*** Many packages now use the `completion-at-point' command,
1428rather than implementing separate completion commands.
1429
de0bde62 1430*** `completion-at-point' now handles tags and semantic completion.
dfdb4cad 1431
a2a25d24
SM
1432*** Completion in a non-minibuffer now tries to detect the end of completion
1433and pops down the *Completions* buffer accordingly.
dfdb4cad
CY
1434
1435*** New option `completion-cycle-threshold' allows completion cycling.
1436
1437*** New option `completion-category-overrides' for overriding the
2c719188 1438default completion style in certain circumstances.
dfdb4cad 1439
a2a25d24 1440*** New completion style `substring'.
dfdb4cad
CY
1441
1442*** Completion of buffer names uses `substring' completion by default.
1443
1444*** The option `widget-complete-field' has been removed.
620c53a6 1445
6870aaef 1446** Mail changes
dfdb4cad 1447
7d301ae6
CY
1448*** The first time you try sending mail, Emacs asks for a mail method.
1449This is implemented by a new default for `send-mail-function', which
1450is `sendmail-query-once'. This offers to use the smtpmail package, or
1451to use the old defaults relying on external mail facilities
1452(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1453`mailclient-send-it' on Windows).
dfdb4cad 1454
e78e7e48
CY
1455*** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
1456transfers the report to your desktop's preferred mail client, if there
1457is one. This uses either the "xdg-email" utility, or Mac OS's "open"
1458command.
dfdb4cad 1459
7d301ae6
CY
1460*** See Changes in Specialized Modes and Packages for SMTPmail changes
1461and Mail mode changes
3f88cd72 1462
041d709f 1463** Emacs server and client changes
dfdb4cad 1464
7d301ae6 1465*** New option `server-port' specifies the port for TCP Emacs servers.
dfdb4cad 1466
041d709f 1467*** New emacsclient argument -q/--quiet suppresses some status messages.
dfdb4cad 1468
7d301ae6
CY
1469*** New emacsclient argument --frame-parameters specifies the frame
1470parameters of any newly-created graphical frame.
dfdb4cad
CY
1471
1472*** If emacsclient shuts down due to Emacs signaling an error,
1473its exit status is 1.
1474
041d709f
CY
1475*** New emacsclient argument --parent-id ID.
1476This opens a client frame in parent X window ID, via XEmbed, similar
1477to the --parent-id argument to Emacs.
1478
d0ce9f8c
MB
1479** Internationalization changes
1480
d0ce9f8c 1481*** Emacs now supports display and editing of bidirectional text.
7d301ae6
CY
1482Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1483displayed in the correct visual order as expected by users of those
dfdb4cad
CY
1484scripts. The display reordering is a "full bidirectionality" class
1485implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1486with no RTL text should look exactly the same as before.
f4b6ba46 1487
041d709f 1488**** New buffer-local variable `bidi-display-reordering'.
7d301ae6 1489To disable display reordering in a buffer, change this to nil.
d20e1419 1490
041d709f
CY
1491**** New buffer-local variable `bidi-paragraph-direction'.
1492If nil (the default), Emacs determines the base direction of each
dfdb4cad
CY
1493paragraph from its text, as specified by the UBA. Setting the value
1494to `right-to-left' or `left-to-right' forces a base direction on each
1495paragraph.
f4b6ba46 1496
7d301ae6
CY
1497Paragraphs with right-to-left base direction are displayed starting at
1498the right window edge.
f1816485 1499
dfdb4cad
CY
1500*** Enhanced support for characters with no glyphs in available fonts,
1501or, on text terminals, characters that cannot be encoded by the
1502terminal coding system. The new option `glyphless-char-display-control'
1503specifies how to display them: as a hexadecimal code in a box, a thin
15041-pixel space, an empty box, etc.
d0ce9f8c 1505
9702b7a1
GM
1506*** New input methods for Farsi and Bulgarian
1507(farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
041d709f 1508
939db9ac
CY
1509*** `nobreak-char-display' now also highlights Unicode hyphen chars
1510(U+2010 and U+2011).
1511
7d301ae6 1512*** New Hebrew translation of the Emacs Tutorial.
31fd3586
GM
1513Type `C-u C-h t' to choose it in case your language setup doesn't
1514automatically select it.
1515
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1516** An Emacs Lisp package manager is now included.
1517This is a convenient way to download and install additional packages,
1518from a package repository at http://elpa.gnu.org.
dfdb4cad 1519
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1520*** M-x list-packages shows a list of packages, which can be
1521selected for installation.
dfdb4cad 1522
7d301ae6 1523*** New command `describe-package', bound to `C-h P'.
dfdb4cad 1524
7d301ae6
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1525*** By default, all installed packages are loaded automatically when
1526Emacs starts up. To disable this, set `package-enable-at-startup' to
1527nil. To specify the packages to load, customize `package-load-list'.
16a91140 1528
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1529** Custom theme changes
1530
7d301ae6
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1531*** New command `M-x customize-themes', which provides a convenient
1532interface for enabling and disabling Custom themes.
dfdb4cad 1533
7d301ae6 1534*** New option `custom-theme-load-path' is the load path for themes.
dfdb4cad
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1535Emacs no longer looks for Custom themes in `load-path'. The default
1536value of `custom-theme-load-path' says to look for themes in
1537`custom-theme-directory', followed by a subdirectory of
1538`data-directory' named "themes/", which contains a small selection of
1539built-in Custom themes.
1540
7d301ae6
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1541*** New option `custom-safe-themes' records known-safe theme files.
1542If a theme is not in this list, Emacs queries before loading it, and
1543offers to save the theme to `custom-safe-themes' automatically. By
1544default, all themes included in Emacs are treated as safe.
b7d65a5f 1545
7d301ae6 1546** Improved GTK integration
dfdb4cad 1547
7d301ae6 1548*** GTK scroll-bars are now placed on the right by default.
dfdb4cad
CY
1549The function `set-scroll-bar-mode' can change this.
1550
7d301ae6 1551*** GTK tool bars can have just text, just images or images and text.
dfdb4cad
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1552Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1553the default is taken from desktop settings.
1554
1555*** GTK tool bars can be placed on any edge of the frame.
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CY
1556The frame-parameter tool-bar-position controls this. It takes the
1557values top, left, right or bottom. The Options => Show/Hide menu has
1558entries for this.
dfdb4cad 1559
7d301ae6
CY
1560*** The default colors for selected text (the `region' face) are taken
1561from the GTK theme when Emacs is built with GTK.
dfdb4cad 1562
7d301ae6
CY
1563*** Emacs uses GTK tooltips by default if built with GTK.
1564You can disable this by changing `x-gtk-use-system-tooltips' to nil.
a5bee597 1565
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1566** Graphical interface changes
1567
1568*** On graphical displays, the mode-line no longer ends in dashes.
1569Also, the first dash (which does not indicate anything) is just
1570displayed as a space.
1571
1572*** `menu-bar-select-buffer-function' lets you choose another operation
1573instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1574
1575*** Lucid menus and dialogs can display antialiased fonts if Emacs is
1576built with Xft. These fonts can be set via X resources, for example:
1577Emacs.pane.menubar.font: Courier-12
1578
7d301ae6 1579** Exiting changes
dfdb4cad 1580
7d301ae6 1581*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
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1582or if it receives a SIGINT signal in batch mode.
1583
7d301ae6
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1584*** `kill-emacs-hook' is now also run in batch mode.
1585Third-party code which adds to `kill-emacs-hook' should check if they
1586do the right thing in batch mode.
9c524fcb 1587
041d709f 1588** Scrolling changes
dfdb4cad 1589
041d709f 1590*** New scrolling commands `scroll-up-command' and `scroll-down-command'
0a19a6f8 1591(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
7d301ae6 1592of buffer at first key-press (instead they move to top/bottom of buffer)
550f41cd 1593when `scroll-error-top-bottom' is non-nil.
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1594
1595*** New option `scroll-error-top-bottom' (see above).
1596
041d709f 1597*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 1598scroll a line instead of full screen.
dfdb4cad 1599
041d709f 1600*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 1601define it as a scroll command affected by `scroll-preserve-screen-position'.
dfdb4cad 1602
041d709f 1603*** If you customize `scroll-conservatively' to a value greater than 100,
d0f69533
EZ
1604Emacs will never recenter point in the window when it scrolls due to
1605cursor motion commands or commands that move point (e.f., `M-g M-g').
1606Previously, you needed to use `most-positive-fixnum' as the value of
1607`scroll-conservatively' to achieve the same effect.
dfdb4cad 1608
7d301ae6 1609*** "Aggressive" scrolling now honors the scroll margins.
d0f69533
EZ
1610If you customize `scroll-up-aggressively' or
1611`scroll-down-aggressively' and move point off the window, Emacs now
1612scrolls the window so as to avoid positioning point inside the scroll
1613margin.
1614
7d301ae6
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1615** Basic SELinux support has been added.
1616This requires Emacs to be linked with libselinux at build time.
f1a5d776 1617
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1618*** Emacs preserves the SELinux file context when backing up.
1619Also, the function `copy-file' has an extra optional argument for
1620preserving SELinux context, and the return value of `backup-buffer'
1621now includes the SELinux context.
f0bf7c8e 1622
dfdb4cad 1623*** New functions `file-selinux-context' and `set-file-selinux-context'
7d301ae6 1624get and set the SELinux context of a file.
44198b6e 1625
7d301ae6 1626** Trash changes
dfdb4cad 1627
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CY
1628*** `delete-by-moving-to-trash' now only affects commands that specify
1629trashing. This avoids inadvertently trashing temporary files.
dfdb4cad 1630
7d301ae6
CY
1631*** Calling `delete-file' or `delete-directory' with a prefix argument
1632now forces true deletion, regardless of `delete-by-moving-to-trash'.
278f6845 1633
041d709f 1634** File- and directory-local variable changes
dfdb4cad 1635
041d709f
CY
1636*** You can stop directory local vars from applying to subdirectories.
1637Add an element (subdirs . nil) to the alist portion of any variables
1638settings to indicate that the section should not apply to
1639subdirectories.
dfdb4cad 1640
041d709f
CY
1641*** Directory local variables can apply to some file-less buffers.
1642Affected modes include dired, vc-dir, and log-edit. For example,
1643adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
1644turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
1645`hack-dir-local-variables-non-file-buffer' to support this.
dfdb4cad 1646
041d709f
CY
1647*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
1648Instead, use "eval: (minor-mode 1)".
c136e5cd 1649
7b447e9b
GM
1650*** The variable `inhibit-first-line-modes-regexps' has been renamed
1651to `inhibit-local-variables-regexps'. As the name suggests, it now
dfdb4cad
CY
1652applies to ALL file local variables, not just -*- lines. The
1653associated `inhibit-first-line-modes-suffixes' has been renamed in the
1654corresponding way.
5d907d6c 1655
0a2132ba
CY
1656** Window changes
1657
91b65361
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1658*** The `quit-window' command now restores the last buffer displayed
1659in the quitted window.
1660
0a2132ba
CY
1661*** Resizing an Emacs frame now preserves proportional window sizes,
1662modulo restrictions like window minimum sizes and fixed-size windows.
1663
1664*** The behavior of `display-buffer' is now customizable in detail.
dfdb4cad 1665
0a2132ba
CY
1666**** New option `display-buffer-base-action' specifies a list of
1667user-determined display "actions" (functions and optional arguments
1668for choosing the displaying window).
1669
1670This takes precedence over the default display action, which is
1671specified by `display-buffer-fallback-action'.
1672
1673**** New option `display-buffer-alist' maps buffer name regexps to
1674display actions, taking precedence over `display-buffer-base-action'.
1675
a0c2d0ae
MR
1676*** New option `window-combination-limit'.
1677The new option `window-combination-limit' allows to return the space
1678obtained for resizing or creating a window more reliably to the window
1679from which such space was obtained.
0a2132ba 1680
a0c2d0ae
MR
1681*** New option `window-combination-resize'.
1682The new option `window-combination-resize' allows to split a window that
1683otherwise cannot be split because it's too small by stealing space from
1684other windows in the same combination. Subsequent resizing or deletion
1685of the window will resize all windows in the same combination as well.
0a2132ba 1686
91b65361
CY
1687*** New option `frame-auto-hide-function' lets you choose between
1688iconifying or deleting a frame when burying a buffer in a dedicated
1689frame, or quitting a window showing a buffer in a frame of its own.
1690
0a2132ba 1691*** New commands `maximize-window' and `minimize-window'.
53964682 1692These maximize and minimize the size of a window within its frame.
0a2132ba 1693
0a2132ba
CY
1694*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
1695These functions allow to navigate through the live buffers that have
1696been shown in a specific window.
1697
7d301ae6 1698** Minibuffer changes
dfdb4cad 1699
7d301ae6 1700*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
104dc9c6
GM
1701This is handy for minibuffer-only frames, and is also used for the feature
1702where mouse-1 pops up *Messages*"', which can now easily be changed.
041d709f 1703
7d301ae6 1704*** Minibuffers set `truncate-lines' to nil.
f66eca26 1705If you want to change the value to something else, you could use
7d301ae6
CY
1706for example `minibuffer-setup-hook'.
1707
7d301ae6
CY
1708** `auto-mode-case-fold' is now enabled by default.
1709
7d301ae6 1710** `backup-by-copying-when-mismatch' now defaults to t.
f66eca26 1711
dfdb4cad
CY
1712** New basic faces `error', `warning', `success'.
1713These are used to highlight text indicating failure, caution or
1714successful operation.
1715
1716** New option `list-colors-sort' defines the color sort order
1717for `list-colors-display'.
1718
1719** The variable `focus-follows-mouse' now always defaults to nil.
1720
0bfd685e 1721\f
eb199145 1722* Editing Changes in Emacs 24.1
b350bdf2 1723
892777ba 1724** Search changes
dfdb4cad
CY
1725
1726*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
1727`isearch-yank-line'.
1728
1729*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
1730`isearch-yank-kill'.
1731
1732*** M-s C-e in Isearch is now bound to `isearch-yank-line'.
1733
b2b0776e 1734** New commands `count-words-region' and `count-words'.
dfdb4cad 1735
10607bea
CY
1736*** M-= is bound to `count-words-region', not `count-lines-region'.
1737The `count-words-region' command, when called interactively, reports
1738the number of lines, words, and characters in the region. It is a
1739superset of the old `count-lines-region', which is now an obsolete
1740alias for it.
ea4f7750 1741
ec9da840 1742** The command `just-one-space' (M-SPC), if given a negative argument,
1c708c1a
CY
1743also deletes newlines around point.
1744
b9229673 1745** Deletion changes
dfdb4cad 1746
b9229673 1747*** New option `delete-active-region'.
ddb54206 1748If non-nil, [delete] and DEL delete the region if it is active and no
dfdb4cad 1749prefix argument is given. If set to `kill', those commands kill
ddb54206 1750instead.
dfdb4cad 1751
59ee0542 1752*** New command `delete-forward-char', bound to [delete].
42d9cffa
CY
1753This is meant for interactive use, and obeys `delete-active-region'.
1754The command `delete-char' does not obey `delete-active-region'.
dfdb4cad 1755
b9229673
CY
1756*** `delete-backward-char' is now a Lisp function.
1757Apart from obeying `delete-active-region', its behavior is unchanged.
7d301ae6
CY
1758However, the byte compiler now warns if it is called from Lisp; Lisp
1759callers should use delete-char with a negative argument instead.
dfdb4cad 1760
b9229673
CY
1761*** The option `mouse-region-delete-keys' has been deleted.
1762
f9d71b42
CY
1763** Selection changes.
1764
7d301ae6
CY
1765The default handling of clipboard and primary selections has been
1766changed to conform with modern X applications. In short, most
1767commands for killing and yanking text now use the clipboard, while
1768mouse commands use the primary selection.
b1ab31ae
CY
1769
1770In the following, we provide a list of these changes, followed by a
1771list of steps to get the old behavior back if you prefer that.
1772
b1ab31ae
CY
1773*** `select-active-regions' now defaults to t.
1774Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 1775the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
1776the system possesses a separate primary selection facility (e.g. X).
1777
1778**** `select-active-regions' also accepts a new value, `only'.
1779This means to only set the primary selection for temporarily active
1780regions (usually made by mouse-dragging or shift-selection);
1781"ordinary" active regions, such as those made with C-SPC followed by
1782point motion, do not alter the primary selection.
1783
963578d3
CY
1784**** `mouse-drag-copy-region' now defaults to nil.
1785
b1ab31ae
CY
1786*** mouse-2 is now bound to `mouse-yank-primary'.
1787This pastes from the primary selection, ignoring the kill-ring.
1788Previously, mouse-2 was bound to `mouse-yank-at-click'.
dfdb4cad 1789
b1ab31ae 1790*** `x-select-enable-clipboard' now defaults to t on all platforms.
dfdb4cad 1791
b1ab31ae
CY
1792*** `x-select-enable-primary' now defaults to nil.
1793Thus, commands that kill text or copy it to the kill-ring (such as
1794M-w, C-w, and C-k) also use the clipboard---not the primary selection.
1795
1796**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
dfdb4cad 1797exactly equivalent to M-w, C-w, and C-y respectively.
b1ab31ae
CY
1798
1799**** Note that on MS-Windows, `x-select-enable-clipboard' was already
1800non-nil by default, as Windows does not support the primary selection
1801between applications.
1802
1803*** To return to the previous behavior, do the following:
dfdb4cad 1804
104c2fe9 1805**** Change `select-active-regions' to nil.
b1ab31ae
CY
1806**** Change `mouse-drag-copy-region' to t.
1807**** Change `x-select-enable-primary' to t (on X only).
1808**** Change `x-select-enable-clipboard' to nil.
1809**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 1810
084e6df3 1811*** Support for X cut buffers has been removed.
dfdb4cad 1812
3fd50d5c
CY
1813*** X clipboard managers are now supported.
1814To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 1815
dfdb4cad
CY
1816** New command `C-x r N' (`rectangle-number-lines') numbers the lines
1817in the current rectangle. With a prefix argument, this prompts for a
1818number to count from and for a format string.
99f053cf 1819
7d301ae6 1820** `redisplay-dont-pause' now defaults to t.
6bf7006f
EZ
1821This makes Emacs feel more responsive to editing commands that arrive
1822at high rate, e.g. if you lean on some key, because stopping redisplay
1823in the middle (when this variable is nil) forces more expensive
1824updates later on, and Emacs appears to be unable to keep up.
1825
e70b5064
CY
1826** The behavior of <TAB> for active regions in Text mode has changed.
1827In Text and related modes, typing <TAB> (`indent-for-tab-command')
1828when the region is active causes Emacs to indent all the lines in the
1829region, aligning them with the line previous to the first line in the
1830region (or with the left margin if there is no previous line).
1831
dfdb4cad
CY
1832** When `occur' is called with a prefix argument, matching strings are
1833collected into the `*Occur*' buffer without line numbers. If there
1834are parenthesized subexpressions in the specified regexp, `occur'
1835reads replacement text that may contain \\& and \\N whose convention
1836follows `replace-match'.
1837
9bae34bf 1838\f
eb199145 1839* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 1840
041d709f 1841** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 1842
b7c3692a 1843** BibTeX mode
dfdb4cad 1844
2de69e00 1845*** BibTeX mode now supports biblatex.
7d301ae6
CY
1846Use the variable `bibtex-dialect' to select different BibTeX dialects.
1847`bibtex-entry-field-alist' is now an obsolete alias for
1848`bibtex-BibTeX-entry-alist'.
1849
dfdb4cad
CY
1850*** New command `bibtex-search-entries', bound to C-c C-a.
1851
b7c3692a 1852*** New `bibtex-entry-format' option `sort-fields', disabled by default.
dfdb4cad 1853
022fe7ce
RW
1854*** New variable `bibtex-search-entry-globally'.
1855
7d301ae6 1856** Browse-url
dfdb4cad 1857
7d301ae6 1858*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
dfdb4cad 1859
7d301ae6
CY
1860*** The default browser used by the package is now the "xdg-open" program,
1861on platforms that support it. This calls your desktop's preferred browser.
1862
86e100a6
GM
1863** Calc
1864
1865*** Support for musical notes.
1866
1867*** Support for logarithmic units.
1868
1869*** No longer uses the tex prefix for TeX specific unit names when
1870using TeX or LaTeX mode.
1871
1872*** New option to highlight selections using faces.
1873
1874*** `calc-histogram' has the option of using a vector to determine the bins.
1875
1876*** New "O" option prefix.
1877
1878*** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
1879
cf16af42
GM
1880** Calendar, Diary, and Appt
1881
7d301ae6 1882*** Diary entries can contain non-printing "comments".
548d0a63
GM
1883See the variable `diary-comment-start'.
1884
5006e634
GM
1885*** Appointments can specify their individual warning times.
1886See the variable `appt-warning-time-regexp'.
1887
0a2bb1a9
GM
1888*** The function specified by `appt-disp-window-function' may be passed
1889lists of arguments if multiple appointments are due at similar times.
1890If you are using a custom function for this, you should update it.
1891
7454f200
GM
1892*** New function `diary-hebrew-birthday'.
1893
e565dd37
GM
1894*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
1895may no longer be nil, but must all be strings.
1896
7d301ae6
CY
1897*** The obsolete (since Emacs 22.1) method of enabling the appt
1898package by adding `appt-make-list' to `diary-hook' has been removed.
1899Use `appt-activate' instead.
cf16af42 1900
cf16af42
GM
1901*** Some appt variables (obsolete since Emacs 22.1) have been removed:
1902appt-issue-message (use the function appt-activate)
1903appt-visible/appt-msg-window (use the variable appt-display-format)
1904
cf16af42
GM
1905*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
1906view-diary-entries, list-diary-entries, show-all-diary-entries
1907
551b046f 1908** CC Mode
dfdb4cad 1909
551b046f 1910*** New feature to "guess" the style in an existing buffer.
7d301ae6 1911The main entry point is M-x c-guess.
041d709f 1912
551b046f
AM
1913*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
1914
dfdb4cad 1915*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
551b046f
AM
1916Thus C-M-a will, by default, go to the beginning of the immediate function,
1917not the top level.
1918
dfdb4cad 1919*** "Macros with semicolons" can be registered for correct indentation.
551b046f
AM
1920Where such a macro ends a line (no semicolon) the next statement is no longer
1921parsed as a statement continuation.
1922
dfdb4cad 1923** Comint and modes derived from it use the standard completion code.
041d709f
CY
1924
1925** Compilation mode
dfdb4cad 1926
7d301ae6 1927*** Compilation mode can be used without Font Lock mode.
041d709f
CY
1928`compilation-parse-errors-function' is now obsolete.
1929
dfdb4cad 1930*** New variable `compilation-filter-start', which is bound while
7d301ae6
CY
1931`compilation-filter-hook' runs. It records the start position of the
1932text inserted by `compilation-filter'.
041d709f 1933
47a6a35f
GM
1934*** `compilation-error-screen-columns' and `compilation-first-column'
1935are obeyed in the editing buffer. So programming language modes can
7d301ae6
CY
1936set them, whereas previously only the value in the *Compilation*
1937buffer was used.
1dce7193 1938
52834b6b
CY
1939** Customize
1940
1941*** Customize buffers now contain a search field.
1942The search is performed using `customize-apropos'.
7d301ae6 1943To turn off the search field, set `custom-search-field' to nil.
52834b6b 1944
8d5dd370 1945*** Options in customize group buffers start out hidden if not customized.
52834b6b
CY
1946Use the arrow to the left of the option name to toggle visibility.
1947
1948*** custom-buffer-sort-alphabetically now defaults to t.
1949
1950*** The color widget now has a "Choose" button, which allows you to
7d301ae6 1951choose a color via `list-colors-display'.
52834b6b 1952
041d709f
CY
1953** D-Bus
1954
5da3be7f
GM
1955*** It is now possible to access buses other than the default system
1956or session bus.
041d709f 1957
7d301ae6 1958*** The `dbus-register-method' and `dbus-register-property' functions
5da3be7f 1959optionally do not register names.
041d709f 1960
7d301ae6 1961*** The new function `dbus-register-service' registers a known service
dfdb4cad 1962name on a D-Bus without also registering a property or a method.
041d709f 1963
f5d6548a 1964** Dired-x
425a25f1 1965
7d301ae6
CY
1966*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
1967if called with a prefix argument, read a file name from the minibuffer
1968instead of using the current buffer.
f5d6548a 1969
7d301ae6 1970*** The "dired local variables" feature of Dired-x is obsolete.
817b48a7 1971The standard directory local variables feature replaces it.
8117868f 1972
041d709f 1973** ERC changes
7492acc9 1974
c4077254
GM
1975*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
1976controlling attempts to autojoin a channel.
041d709f
CY
1977
1978*** New variable `erc-coding-system-precedence': If we use `undecided'
1979as the server coding system, this variable will then be consulted.
1980The default is to decode strings that can be decoded as utf-8 as
1981utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 1982
041d709f 1983** Eshell changes
7492acc9 1984
05f77e38
GM
1985*** The default value of `eshell-directory-name' has changed
1986to be an "eshell" directory in `user-emacs-directory'.
1987The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
1988
1989** gdb-mi
dfdb4cad
CY
1990
1991*** The M-x gdb command now uses the GDB Machine Interface protocol.
05f77e38
GM
1992It now supports multithread non-stop debugging and simultaneous
1993debugging of several threads.
7492acc9 1994
18af70d0
CY
1995** Image mode
1996
05f77e38
GM
1997*** RET (`image-toggle-animation') toggles animation, if applicable.
1998Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 1999
041d709f 2000** Info
723ee192 2001
7d301ae6 2002*** New command M-x info-display-manual displays a named Info manual.
2ebc3b94
GM
2003If that manual is already visited in some Info buffer, it displays
2004that buffer. (This is handy if you have many manuals in many *info*
2005buffers, and don't remember the name of the buffer visiting the manual
2006you want to consult.) Otherwise, it loads and displays the manual.
691cf4a0 2007
24ea72d3
EZ
2008*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2009This is for compatibility with the stand-alone Info reader program,
2010and also because `Info-edit' is a rarely used command that is disabled
2011by default.
2012
7d301ae6 2013** Mail mode changes (not Message mode)
dfdb4cad 2014
7d301ae6 2015*** New command M-x mail-add-attachment for adding MIME attachments
7d301ae6 2016
dfdb4cad
CY
2017*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2018(Its name is misleading, since it has nothing to do with MIME
2019attachments.) The old name is now an obsolete alias to the new name.
2020
f2c3a9eb 2021** MH-E has been updated to MH-E version 8.3.1.
041d709f 2022See MH-E-NEWS for details.
37221432 2023
041d709f 2024** Modula-2 mode provides auto-indentation.
37221432 2025
041d709f 2026** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 2027
5d1ac394 2028** nXML mode no longer binds C-RET to `nxml-complete'.
dfdb4cad
CY
2029Completion is now performed via `completion-at-point', bound to C-M-i
2030or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2031default), this performs tag completion.
5d1ac394 2032
f2c3a9eb
CY
2033** Org mode has been updated to version 7.8.09.
2034See ORG-NEWS for details.
2035
041d709f 2036** Prolog mode has been completely revamped, with lots of additional
7d301ae6
CY
2037functionality such as more intelligent indentation, electricity,
2038support for more variants, including Mercury, and a lot more.
041d709f
CY
2039
2040** Rmail
2041
2042*** The command `rmail-epa-decrypt' decrypts OpenPGP data
2043in the Rmail incoming message.
2044
50419064
GM
2045*** The variable `rmail-message-filter' no longer has any effect.
2046This change was made in Emacs 23.1 but was not advertised at the time.
2047Try using `rmail-show-message-hook' instead.
2048
717a1362 2049** Shell mode
dfdb4cad
CY
2050
2051*** M-x shell prompts for the shell path name if the default directory
2052is a remote file name and neither the environment variable $ESHELL nor
2053the variable `explicit-shell-file-name' is set.
2054
2055*** TAB is now bound to the standard `completion-at-point' command,
2056which now implements the pcomplete rules for shell command completion.
717a1362 2057
7d301ae6
CY
2058** SMTPmail
2059
dfdb4cad 2060*** SMTPmail now uses encrypted connections (via STARTTLS) by default
7d301ae6
CY
2061if the mail server supports them. This uses either built-in GnuTLS
2062support, or the starttls.el library. Customize `smtpmail-stream-type'
2063to change this.
2064
7d301ae6
CY
2065*** The variable `smtpmail-auth-credentials' has been removed.
2066By default, the information is now stored in the file ~/.authinfo.
dfdb4cad
CY
2067This was the default value of smtpmail-auth-credentials. If you had
2068customized smtpmail-auth-credentials to a list of user names and
2069passwords, those settings are not used. During your first connection
2070to the smtp server, Emacs will prompt for the user name and password,
2071and offer to save them to ~/.authinfo. Or you can manually copy the
2072credentials to ~/.authinfo. For example, if you had
7d301ae6
CY
2073
2074 (setq smtpmail-auth-credentials
2075 '(("mail.example.org" 25 "jim" "s!cret")))
2076
2077then the equivalent line in ~/.authinfo would be
2078
2079 machine mail.example.org port 25 login jim password s!cret
2080
2081See the auth-source manual for more information, e.g. on encrypting
2082the credentials file.
2083
7d301ae6 2084*** The variable `smtpmail-starttls-credentials' has been removed.
dfdb4cad 2085If you had that set, you need to put
7d301ae6
CY
2086
2087 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2088
2089in your ~/.authinfo file instead.
2090
8ce192e3
LI
2091*** SMTPmail defaults to using the address in the From: header as the
2092SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2093to the address you wish to use instead.
2094
34e8a2da 2095** SQL mode
041d709f 2096
34e8a2da
GM
2097*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2098and `sql-oracle-scan-on'.
041d709f 2099
dfdb4cad 2100*** New options controlling prompting for login parameters.
34e8a2da
GM
2101Each supported product has a custom variable `sql-*-login-params',
2102which is a list of the parameters to be prompted for before a
2103connection is established.
041d709f
CY
2104
2105*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 2106which causes it to prompt for an SQL product.
041d709f 2107
34e8a2da 2108*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
2109These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2110given a prefix argument, prompt for a name for the SQL interactive
2111buffer. This reduces the need for calling `sql-rename-buffer'.
2112
2113*** SQL interactive modes suppress command continuation prompts, and
2114replace tabs with spaces. The first change impacts multiple line SQL
2115statements entered with C-j between each line, statements yanked into
2116the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
2117second prevents the MySQL and Postgres interpreters from listing
2118object name completions when sent text via `sql-send-*' functions.
041d709f
CY
2119
2120*** New command `sql-connect' starts a predefined SQLi session,
2121using the login parameters from `sql-connection-alist'.
2122
2123*** New "Save Connection" menu item in SQLi buffers.
2124This gathers the login params specified for the SQLi session, if it
2125was not started by a connection, and saves them as a new connection.
2126
34e8a2da
GM
2127*** New commands for listing database objects and details:
2128sql-list-all and sql-list-table.
041d709f
CY
2129
2130*** An API for manipulating SQL product definitions has been added.
2131
2132** TeX modes
2133
2134*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 2135
459bba37 2136** Tramp
dfdb4cad 2137
7d301ae6 2138*** New inline access method "ksu" (kerberized su).
dfdb4cad 2139
459bba37 2140*** The following access methods are discontinued: "ssh1_old",
ea843702 2141"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
dfdb4cad 2142
b011fbfe
GM
2143*** The user option `remote-file-name-inhibit-cache' controls whether
2144remote file attributes are cached for better performance.
dfdb4cad 2145
58f74fe4
MA
2146*** The option `ange-ftp-binary-file-name-regexp' has changed its
2147default value to "".
dfdb4cad 2148
7d301ae6
CY
2149*** Handlers for `file-selinux-context' and `set-file-selinux-context'
2150for remote machines which support SELinux.
58f74fe4 2151
dfdb4cad 2152** New function `url-queue-retrieve', which behaves like url-retrieve,
a48ec60c
GM
2153but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2154the degree of parallelism.
177549d0 2155
0c32ce32
CY
2156** VC and related modes
2157
2158*** Support for pulling on distributed version control systems.
7d301ae6
CY
2159The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2160supported (currently with Bzr, Git, and Mercurial), to update the
2161current branch and working tree. A prefix argument means to prompt
2162the user for specifics, e.g. a pull location.
0c32ce32 2163
dab3703d 2164*** `vc-update' is now an alias for `vc-pull'.
0c32ce32
CY
2165
2166*** Support for merging on distributed version control systems.
7d301ae6
CY
2167The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2168is supported (currently with Bzr, Git, and Mercurial), to merge
2169changes from another branch into the current one. It prompts for
2170specifics, e.g. a merge source.
0c32ce32 2171
2afef60a 2172*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 2173shows a diff while querying the user. It defaults to t.
2afef60a 2174
d4eb88c7
CY
2175*** Log entries in some Log View buffers can be toggled to display a
2176longer description by typing RET (log-view-toggle-entry-display).
dab3703d
GM
2177This is currently supported for Bzr, Git, and Mercurial (to support
2178another backend, define a `log-view-expanded-log-entry-function').
7d301ae6 2179In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
d4eb88c7
CY
2180use this to display the full log entry for the revision at point.
2181
1c6c854e
CS
2182*** New command `vc-ediff' allows visual comparison of two revisions
2183of a file similar to `vc-diff', but using ediff backend.
2184
86c60681
CY
2185*** The option `vc-initial-comment' was removed in Emacs 23.2, but
2186this was not advertised at the time.
2187
86c60681
CY
2188*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2189Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
2190this was not advertised at the time.
2191
041d709f
CY
2192** Obsolete modes
2193
23d70505
GM
2194*** abbrevlist.el
2195
f8ca9162 2196*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
2197
2198*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
2199You can get a comparable behavior with:
2200(setq completion-styles '(partial-completion initials))
2201(setq completion-pcm-complete-word-inserts-delimiters t)
2202
23d70505
GM
2203*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2204
2c719188 2205*** pgg is obsolete (use EasyPG instead).
041d709f
CY
2206
2207*** sregex.el is obsolete, since rx.el is a strict superset.
2208
23d70505
GM
2209*** s-region.el and pc-select.el are obsolete.
2210They are superseded by shift-select-mode, enabled by default since 23.1.
2211
2c719188 2212*** vc-mcvs.el is obsolete (for lack of a maintainer).
ca5eed61 2213
0fe719e6
GM
2214** Miscellaneous
2215
05f77e38 2216*** The Landmark game is now invoked with `landmark', not `lm'.
c6ad2a4e 2217Its functions and variables have been similarly renamed.
05f77e38 2218
dfdb4cad 2219*** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
05f77e38
GM
2220(This interfered with cua-mode.)
2221
9f678528
GM
2222*** f90.el has some support for Fortran 2008 syntax.
2223
0fe719e6
GM
2224*** `copyright-fix-years' can optionally convert consecutive years to ranges.
2225
5b3e6db8
GM
2226*** New command `nato-region' converts text to NATO phonetic alphabet.
2227
eb199145
GM
2228\f
2229* New Modes and Packages in Emacs 24.1
d445b3f8 2230
60e56523 2231** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 2232original buffers. It is bound to "e" in Occur mode.
60e56523 2233
a075a2c5
GM
2234** New global minor mode electric-pair-mode.
2235When enabled, typing an open parenthesis automatically inserts the
2236matching closing one.
2237
2238** New global minor mode electric-indent-mode.
2239When enabled, typing certain characters triggers reindentation.
cd3308f3
GM
2240Major modes wishing to use this can set electric-indent-chars or
2241electric-indent-functions.
a075a2c5
GM
2242
2243** New global minor mode electric-layout-mode.
2244When enabled, typing certain characters automatically inserts newlines.
cd3308f3 2245Major modes wishing to use this can set electric-layout-rules.
3b843809 2246
a83ec3c9
CY
2247** tabulated-list.el provides a generic major mode for tabulated data,
2248from which other modes can be derived.
2249
d02c9bcd
SM
2250** pcase.el provides the ML-style pattern matching macro `pcase'.
2251
7725ebb7
MA
2252** secrets.el is an implementation of the Secret Service API, an
2253interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
2254Secret Service API requires D-Bus for communication. The command
2255`secrets-show-secrets' offers a buffer with a visualization of the
2256secrets.
7725ebb7 2257
f9e78150
MA
2258** notifications.el provides an implementation of the Desktop
2259Notifications API. It requires D-Bus for communication.
2260
12fe5bcc
MA
2261** soap-client.el supports access to SOAP web services from Emacs.
2262soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2263
ff1796f3 2264** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 2265
53bbe3ad 2266** New emacs-lock.el package.
7d301ae6
CY
2267The previous version has been moved to obsolete/old-emacs-lock.el.
2268Now, there is a proper minor mode `emacs-lock-mode'. Protection
2269against exiting Emacs and killing the buffer can be set separately.
2270The mechanism for automatically turning off protection for buffers
2271with dead inferior processes has been generalized.
53bbe3ad 2272
eb199145
GM
2273\f
2274* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 2275
7d301ae6
CY
2276** Passing a nil argument to a minor mode function call now ENABLES
2277the minor mode unconditionally. This is so that you can write e.g.
2278
dfdb4cad 2279 (add-hook 'text-mode-hook 'foo-mode)
7d301ae6 2280
dfdb4cad
CY
2281to enable foo-mode in Text mode buffers, removing the need for
2282`turn-on-foo-mode' style functions. This affects all mode commands
2283defined by `define-minor-mode'. If called interactively, the mode
2284command still toggles the minor mode.
7d301ae6 2285
d268b4fe
CY
2286** The return value of `backup-buffer' has changed.
2287It is now a list of three elements, where the second element is a list
2288describing the original file's SELinux context. If Emacs or the
f003f294 2289system lacks SELinux support, the context list is (nil nil nil nil).
7d301ae6 2290See "Basic SELinux support" above, under "Changes in Emacs 24.1".
d268b4fe 2291
dfdb4cad
CY
2292** `char-direction-table' and the `char-direction' function were deleted.
2293They were buggy and inferior to the new support of bidirectional
2294editing introduced in Emacs 24. If you need the bidirectional
2295properties of a character, use `get-char-code-property' with the last
2296argument `bidi-class'.
fa6996bc 2297
470d996d
TV
2298** `copy-directory' now copies the source directory as a subdirectory
2299of the target directory, if the latter is an existing directory. The
2300new optional arg COPY-CONTENTS, if non-nil, makes the function copy
2301the contents directly into a pre-existing target directory.
2302
9173a8fb
CY
2303** For mouse click input events in the text area, the Y pixel
2304coordinate in the POSITION list now counts from the top of the text
2305area, excluding any header line. Previously, it counted from the top
2306of the header line.
2307
7d301ae6
CY
2308** Support for "old-style" backquotes, obsolete for 10+ years, has
2309been further reduced. Now a backquote not followed by a space is
2310always treated as a "new-style" backquote. Please remove all
2311"old-style" backquotes from your code. If your code uses backquotes
2312as documented in the Elisp manual, and compiles without warning, then
2313you have nothing to do in this regard. Code not following the
2314appropriate conventions may fail to compile.
50ab02c5
CY
2315
2316The most common cause of trouble seems to be an old-style backquote
2317followed by a newline. Another cause of trouble is vector notation
2318for key sequence notation: instead of [(control ,)] and [(control ')],
2319you should write [(control ?,)] and [(control ?')], which will work in
7d301ae6 2320older Emacsen too.
288cf4e9 2321
520f2425
GM
2322** The macro `eval-at-startup' was removed in Emacs 23.2, but this
2323was not advertised at the time. The function `custom-initialize-delay'
2324replaced all known uses.
2325
7d301ae6
CY
2326** `view-buffer' now treats special mode-class in the same way that
2327`view-file' has since Emacs 22 (i.e. it won't enable View mode if the
2328major mode is special).
fd5c9dfa 2329
7d301ae6 2330** Menu and tool bar changes
6431f2e6 2331
7d301ae6 2332*** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
2333and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
2334With these alist entries omitted, `make-frame' checks the value of the
2335variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
2336a menu-bar or tool-bar, respectively. If the alist entries are added,
2337they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 2338
7d301ae6
CY
2339*** The menu bar bindings's caches are not used any more.
2340Use (where-is-internal <def> nil t) instead.
2341
fe0aa820 2342** Regions created by mouse dragging are now normal active regions,
dfdb4cad 2343similar to those created by shift-selection (see Selection changes
7d301ae6
CY
2344above). In previous Emacs versions, these regions were delineated by
2345`mouse-drag-overlay'; that variable has been removed.
d6d8ee7a 2346
7d301ae6
CY
2347** The fourth argument of `filter-buffer-substring' has been removed.
2348If you want to remove text properties from the final result, simply
2349pass the result through substring-no-properties.
34c99998 2350
4583e796
GM
2351** cl.el no longer provides `cl-19'.
2352
7d301ae6
CY
2353** The following obsolete functions and aliases have been removed
2354(the appropriate new function is given in parentheses; "not needed"
2355means you can just remove all calls to the function in question):
2356
2357*** `comint-kill-output' (`comint-delete-output')
2358*** `decompose-composite-char' (`char-to-string')
2359*** `outline-visible' (`outline-invisible-p')
2360*** `internal-find-face' (`facep')
2361*** `internal-get-face' (`facep and check-face')
2362*** `frame-update-faces' (not needed)
2363*** `frame-update-face-colors' (`frame-set-background-mode')
2364*** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2c719188 2365*** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
7d301ae6
CY
2366*** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
2367*** `x-make-font-bold-italic' (`make-face-bold-italic')
2368*** `x-make-font-unbold' (`make-face-unbold')
2369*** `x-make-font-unitalic' (`make-face-unitalic')
2370*** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
2371*** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
2372*** `iswitchb-default-keybindings' (`iswitchb-mode')
2373*** `char-bytes' (== 1)
2374*** `isearch-return-char' (`isearch-printing-char')
2375*** `make-local-hook' (not needed)
2376*** `set-screen-height' (`set-frame-height')
2377*** `set-screen-width' (`set-frame-width')
2378
7d301ae6
CY
2379** The following obsolete variables and varaliases have been removed
2380(the appropriate new variable is given in parentheses):
2381
2382*** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2383*** `vc-header-alist' (`vc-BACKEND-header')
2384*** `directory-sep-char' (== ?/)
2385*** `font-lock-defaults-alist' (`font-lock-defaults')
2386*** `e' (`float-e').
3226d6ca 2387
041d709f 2388** The following obsolete files were removed:
7b0e3048
GM
2389sc.el, x-menu.el, rnews.el, rnewspost.el
2390
7d301ae6
CY
2391** The format of the finder-inf.el file has changed, since the Finder
2392mechanism is now based on the package system. The variable
2393`finder-package-info' is replaced by `package--builtins' and
2394`finder-keywords-hash'.
33658d4e 2395
c2c79260
DE
2396** When generating autoloads, `update-directory-autoloads' no longer
2397assumes every inspected file is in your `load-path'. It instead
2398generates relative names according to the current `load-path'.
2399
eb199145 2400\f
93e0bed6 2401* Lisp Changes in Emacs 24.1
9097e8af 2402
041d709f 2403** Code can now use lexical scoping by default instead of dynamic scoping.
dfdb4cad 2404The `lexical-binding' variable enables lexical scoping for local
48da7392 2405variables. It is typically set via a file-local variable in the first
dfdb4cad
CY
2406line of the file, in which case it applies to all the code in that
2407file.
2408
041d709f
CY
2409*** `eval' takes a new optional argument `lexical' to choose the new lexical
2410binding instead of the old dynamic binding mode.
dfdb4cad 2411
041d709f
CY
2412*** Lexically scoped interpreted functions are represented with a new form
2413of function value which looks like (closure ENV ARGS &rest BODY).
2414
2415*** New macro `letrec' to define recursive local functions.
dfdb4cad
CY
2416
2417*** `defvar' and `defconst' now mark the variable as special (dynamic).
2418So do `defcustom' and other forms that call `defvar' as a subroutine.
2419
041d709f
CY
2420*** New function `special-variable-p' to check whether a variable is
2421declared as dynamically bound.
2422
88ed9e87
SM
2423*** The form ((lambda ...) ...) is deprecated.
2424
041d709f
CY
2425** An Emacs Lisp testing tool is now included.
2426Emacs Lisp developers can use this tool to write automated tests for
2427their code. See the ERT info manual for details.
2428
2429** Changes for bidirectional display and editing
f1816485 2430
041d709f 2431*** New function `current-bidi-paragraph-direction'.
7d301ae6 2432This returns the base direction of the paragraph at point.
041d709f 2433
041d709f 2434*** New function `bidi-string-mark-left-to-right'.
dfdb4cad
CY
2435Given a string containing characters from right-to-left scripts, this
2436function returns another string which can be safely inserted into a
2437buffer, such that any following text will be always displayed to the
7d301ae6
CY
2438right of that string. (This works by appending an invisible Unicode
2439"LEFT-TO-RIGHT MARK" character if the argument string might need it.)
041d709f 2440
7d301ae6 2441This is useful when the buffer has overall left-to-right paragraph
dfdb4cad
CY
2442direction and you need to insert a string whose contents are not known
2443in advance, without disrupting the layout of the line.
041d709f 2444
bee0fcef 2445** Window changes
dfdb4cad 2446
c4682d18
MR
2447*** Window tree functions are accessible in Elisp.
2448Functions are provided to return the parent, siblings or child windows
2449of any window including internal windows (windows not associated with a
2450buffer) in the window tree.
dfdb4cad 2451
24300f5f
CY
2452**** New function `window-valid-p' gives non-nil for live and internal
2453windows.
dfdb4cad 2454
24300f5f 2455**** Window manipulation can deal with internal windows.
c4682d18
MR
2456Many window handling functions like `split-window', `delete-window', or
2457`delete-other-windows' as well as the window resizing functions can now
2458act on any window including internal ones.
dfdb4cad 2459
c4682d18
MR
2460*** window-total-height/-width vs window-body-height/-width.
2461The function `window-height' has been renamed to `window-total-height'
2462and `window-width' has been renamed to `window-body-width'. The old
2463names are provided as aliases. Two new functions `window-total-width'
2464and `window-body-height' are provided.
dfdb4cad 2465
c4682d18
MR
2466*** Window parameters specific to window handling functions.
2467For each window you can specify a parameter to override the default
2468behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
2469and `delete-other-windows'. The variable `ignore-window-parameters'
2470allows to ignore processing such parameters.
dfdb4cad 2471
c4682d18 2472*** New semantics of third argument of `split-window'.
c4682d18
MR
2473The third argument of `split-window' has been renamed to SIDE and can be
2474set to any of the values 'below, 'right, 'above, or 'left to make the
2475new window appear on the corresponding side of the window that shall be
2476split. Any other value of SIDE will cause `split-window' to split the
2477window into two side-by-side windows as before.
dfdb4cad 2478
c4682d18 2479*** Window resizing functions.
487ffd7a 2480A new standard function for resizing windows called `window-resize' has
c4682d18
MR
2481been introduced. This and all other functions for resizing windows no
2482longer delete any windows when they become too small.
dfdb4cad 2483
b3c0dbfd
MR
2484*** Deleting the selected window now selects the most recently selected
2485live window on that frame instead.
dfdb4cad 2486
c4682d18
MR
2487*** `adjust-window-trailing-edge' adjustments.
2488`adjust-window-trailing-edge' can now deal with fixed-size windows and
2489is able to resize other windows if a window adjacent to the trailing
2490edge cannot be shrunk any more. This makes its behavior more similar to
2491that of Emacs 21 without compromising, however, its inability to delete
2492windows which was introduced in Emacs 22.
dfdb4cad 2493
c4682d18
MR
2494*** Window-local buffer lists.
2495Windows now have local buffer lists. This means that removing a buffer
2496from display in a window will preferably show the buffer previously
2497shown in that window with its previous window-start and window-point
2498positions. This also means that the same buffer may be automatically
2499shown twice even if it already appears in another window.
dfdb4cad 2500
bee0fcef
CY
2501*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2502which if non-nil requires the buffer to be displayed in the currently
2503selected window, signaling an error otherwise. If nil, another window
2504can be used, e.g. if the selected one is strongly dedicated.
dfdb4cad 2505
0a2132ba 2506*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
2507to `split-window-below' and `split-window-right' respectively.
2508The old names are kept as aliases.
dfdb4cad 2509
0a2132ba
CY
2510*** Display actions
2511
2512**** The second arg to `display-buffer' and `pop-to-buffer' is now
2513named ACTION, and takes a display action of the same form as
2514`display-buffer-base-action' (see Changes, above). A non-nil,
2515non-list value is treated specially, as the old meaning.
2516
2517**** New variable `display-buffer-overriding-action'.
2518
2519**** The procedure of `display-buffer' etc. to choose a window is
2520determined by combining `display-buffer-overriding-action',
2521`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2522and `display-buffer-fallback-action'. The second and fourth of these
2523are user-customizable variables.
2524
2525See the docstring of `display-buffer' for details.
bee0fcef 2526
20d2304d
CY
2527*** New functions `window-state-get' and `window-state-put'.
2528These functions allow to save and restore the state of an arbitrary
2529frame or window as an Elisp object.
2530
a2a25d24 2531** Completion
041d709f 2532
7d301ae6
CY
2533*** New variable `completion-extra-properties' used to specify extra
2534properties of the current completion:
a2a25d24
SM
2535- :annotate-function, same as the old completion-annotate-function.
2536- :exit-function, function to call after completion took place.
2537
7d301ae6
CY
2538*** Functions on `completion-at-point-functions' can return any of the
2539properties valid for `completion-extra-properties'.
a2a25d24 2540
7d301ae6 2541*** `completion-annotate-function' is obsolete.
a2a25d24 2542
620c53a6
SM
2543*** New `metadata' method for completion tables. The metadata thus returned
2544can specify various details of the data returned by `all-completions':
2545- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2546 used to select a style in completion-category-overrides.
2547- `annotation-function' to add annotations in *Completions*.
2548- `display-sort-function' to specify how to sort entries in *Completions*.
2549- `cycle-sort-function' to specify how to sort entries when cycling.
2550
7d301ae6
CY
2551*** `minibuffer-local-filename-must-match-map' is not used any more.
2552Instead, the bindings in `minibuffer-local-filename-completion-map'
2553are combined with `minibuffer-local-must-match-map'.
de09aa52
CY
2554
2555*** New variable `completing-read-function' allows overriding the
2556behavior of `completing-read'.
2557
f042970d 2558** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
2559text terminal display, via a char-table entry that is a cons cell.
2560
7d301ae6 2561** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
f6d62986
SM
2562Instead, the offending function is removed.
2563
b1f6fa26
CY
2564** New hook types
2565
2566*** New function `run-hook-wrapped' for running an abnormal hook by
2567passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 2568Like `run-hook-with-args-until-success', it stops at the first
5385447f 2569non-nil return value.
e7bc51d0 2570
b1f6fa26
CY
2571*** New macro `with-wrapper-hook' for running an abnormal hook as a
2572set of "wrapping" filters, similar to around advice.
54521c99
GM
2573(A version of this macro was actually added in Emacs 23.2 but was not
2574advertised at the time.)
f6d62986 2575
0b19b281 2576** Debugger changes
dfdb4cad 2577
0b19b281 2578*** New macro `condition-case-unless-debug' (this was actually added in
1be3ca5a 2579Emacs 23.1 as condition-case-no-debug, but not advertised)
dfdb4cad 2580
0b19b281 2581*** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
dfdb4cad 2582
0b19b281 2583*** Variable `stack-trace-on-error' removed.
dfdb4cad 2584
0b19b281
CY
2585*** The debugger can now "continue" from an error, which means it will
2586jump to the error handler as if the debugger had not been invoked
2587instead of jumping all the way to the top-level.
dfdb4cad 2588
0b19b281
CY
2589*** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2590This can be useful when `inhibit-quit' is set.
d6b1d521 2591
953cebf5 2592** The new function `server-eval-at' allows evaluation of Lisp forms on
37576acd 2593named Emacs server instances.
7deebf1b 2594
1b9f60cc
GM
2595** `call-process' and `call-process-region' allow a `(:file "file")' spec
2596to redirect STDOUT to a file.
7deebf1b 2597
7d301ae6
CY
2598** The function `format-time-string' now supports the %N directive,
2599for higher-resolution time stamps.
da97a9e6 2600
0b19b281 2601** New input reading functions
dfdb4cad 2602
0b19b281
CY
2603*** New function `read-char-choice' reads a restricted set of
2604characters, discarding any inputs not inside the set.
dfdb4cad 2605
0b19b281
CY
2606*** The command `read-color' now requires a match for a color name
2607or RGB triplet, instead of signaling an error if the user provides
2608invalid input.
dfdb4cad 2609
0b19b281 2610**** `facemenu-read-color' is now an alias for `read-color'.
3ef01959 2611
2e288d54
JB
2612** `image-library-alist' is renamed to `dynamic-library-alist'.
2613The variable is now used to load all kind of supported dynamic libraries,
2614not just image libraries. The previous name is still available as an
2615obsolete alias.
2616
0b19b281 2617** Syntax parsing changes
dfdb4cad 2618
0b19b281 2619*** New variable `syntax-propertize-function'.
04e2ce72 2620This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
2621This allows syntax-table properties to be set independently from font-lock:
2622just call syntax-propertize to make sure the text is propertized.
2623Together with this new variable come a new hook
2624syntax-propertize-extend-region-functions, as well as two helper functions:
2625syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
2626as-is; and syntax-propertize-rules which provides a new way to specify
2627syntactic rules.
dfdb4cad 2628
0b19b281 2629*** Syntax tables support a new "comment style c" additionally to style b.
a2e5caf7 2630
7d301ae6 2631** New hook `post-self-insert-hook', run after `self-insert-command'.
041d709f 2632
4e2db1fe 2633** frame-local variables cannot be let-bound any more.
041d709f 2634
15de15c6 2635** Major and minor mode changes
dfdb4cad 2636
0b19b281
CY
2637*** `set-auto-mode' now respects mode: local variables at the end of files,
2638as well as those in the -*- line.
dfdb4cad 2639
15de15c6
CY
2640*** `prog-mode' is a new major mode from which programming modes
2641should be derived.
dfdb4cad 2642
15de15c6
CY
2643**** `prog-mode-hook' can be used to enable features for programming
2644modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
2645on-the-fly spell checking for comments and strings.
dfdb4cad 2646
15de15c6
CY
2647*** New hook `change-major-mode-after-body-hook', run by
2648`run-mode-hooks' just before any other mode hooks.
dfdb4cad 2649
7a9a2fc6
GM
2650*** Enabled globalized minor modes can be disabled in specific major modes.
2651If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
2652major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
dfdb4cad 2653
feb8a83a 2654*** `define-minor-mode' accepts new keywords :variable, :after-hook.
f44379e7 2655
7d301ae6
CY
2656** File-handling changes
2657
7d301ae6 2658*** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
2659Trashing is performed if TRASH and `delete-by-moving-to-trash' are
2660both non-nil. Interactively, TRASH defaults to t, unless a prefix
2661argument is supplied (see Trash changes, above).
53967e09 2662
7d301ae6 2663*** New file predicates: `file-equal-p', `file-in-directory-p'.
ec70a47d 2664
4039c786
CY
2665** Tool-bars can display separators.
2666Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 2667i.e. via menu entries of the form `(menu-item "--")'.
9317e499 2668
00fe2df1
JL
2669** Image API
2670
18af70d0
CY
2671*** Animated images support (currently animated gifs only).
2672
2673**** `image-animated-p' returns non-nil if an image can be animated.
2674
2675**** `image-animate' animates a supplied image spec.
2676
2677**** `image-animate-timer' returns the timer object for an image that
2678is being animated.
00fe2df1 2679
7cb76fe0
GM
2680*** `image-extension-data' has been renamed to `image-metadata'.
2681The old name is an obsolete alias to the new one.
1546c559 2682
b4ac6e8c
GM
2683*** Image mode can view any image type that ImageMagick supports.
2684This requires Emacs to be built with ImageMagick support.
7d301ae6
CY
2685
2686**** New function `imagemagick-types', defined if ImageMagick support
2687is enabled, returns a list of image file extensions that your
2688ImageMagick installation supports.
2689
2690**** New function `imagemagick-register-types' enables ImageMagick
2691image types in Image mode and in `create-image' and other helper
2692functions.
2693
2694**** New option `imagemagick-types-inhibit' excludes certain
2695ImageMagick image types from `imagemagick-register-types'.
2696
7d301ae6
CY
2697**** With ImageMagick support, there are extra Image mode commands to
2698resize and rotate images: `image-transform-fit-to-height',
2699`image-transform-fit-to-width', `image-transform-set-rotation', and
2700`image-transform-set-scale'.
041d709f 2701
7d301ae6
CY
2702** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
2703passes it to the mail user agent function. This argument specifies an
2704action for returning to the caller after finishing with the mail. For
2705example, this is used by Rmail to optionally delete a mail window.
b4ac6e8c 2706
71c17aec 2707** XML and HTML parsing
483ab230
CY
2708If Emacs is compiled with libxml2 support, there are two new
2709functions: `libxml-parse-html-region' (which parses "real world" HTML)
2710and `libxml-parse-xml-region' (which parses XML). Both return an
2711Emacs Lisp parse tree.
4b9832a6 2712
7d301ae6 2713** Networking and encryption changes
e2574f2c 2714
7d301ae6
CY
2715*** `open-network-stream' can now be used to open an encrypted stream.
2716It now accepts an optional `:type' parameter for initiating a TLS
2717connection, directly or via STARTTLS. To do STARTTLS, additional
2718parameters (`:end-of-command', `:success', `:capabilities-command')
2719must also be supplied.
2720
2721*** New library gnutls.el.
dfdb4cad
CY
2722The new function `gnutls-available-p' returns non-nil if Emacs is
2723built with GnuTLS support. The main entry points are
2724`open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
2725these functions through `open-network-stream', because that can
7d301ae6
CY
2726upgrade connections through STARTTLS opportunistically or use plain
2727SSL, depending on your needs. For debugging, set `gnutls-log-level'
2728greater than 0.
2729
7d301ae6
CY
2730*** New primitive `secure-hash' that supports many secure hash algorithms:
2731md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
2732sha1.el has been removed. The `sha1' feature is provided by default.
71c17aec 2733
a6020335
MH
2734** Isearch
2735
2736*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
2737
9326ba26
CY
2738** Progress reporters can now "spin".
2739The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
2740now be nil, or omitted. This makes a "non-numeric" reporter. Each
2741time you call `progress-reporter-update' on that progress reporter,
2742with a nil or omitted VALUE argument, the reporter message is
2743displayed with a "spinning bar".
2744
3e214b50
JB
2745** New variable `revert-buffer-in-progress-p' is true while a buffer is
2746being reverted, even if the buffer has a local `revert-buffer-function'.
2747
001bf877
GM
2748** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
2749If delayed-warnings-list is non-nil, the command loop calls
7d301ae6
CY
2750`delayed-warnings-hook' after `post-command-hook'. At present, this
2751is only used by Emacs on some platforms to display warnings during
2752startup, which might otherwise not be noticed. This uses the
2753functions `display-delayed-warnings' and `collapse-delayed-warnings'.
001bf877 2754
6420d28b
CY
2755** rx.el has a new `group-n' construct for explicitly numbered groups.
2756
dac86404
GM
2757** New function `make-composed-keymap' that constructs a new keymap
2758from multiple input maps. You can use this to make a keymap that
2759inherits from multiple maps, eg:
2760 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 2761
c8f6ec5c
GM
2762** New function `string-prefix-p'.
2763(This was actually added in Emacs 23.2 but was not advertised at the time.)
2764
27f7ef2f 2765** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
2766This means that the empty symbol can now be read back. Also, #: by itself
2767(when not immediately followed by a possible symbol character) stands for
2768an empty uninterned symbol.
041d709f 2769
fead402d
CY
2770** New math functions `isnan', `copysign', `frexp', `ldexp'.
2771
7d301ae6 2772** The following functions and variables are obsolete:
041d709f 2773
05f77e38
GM
2774*** `tooltip-use-echo-area' is obsolete.
2775Rather than setting this to t, disable Tooltip mode instead.
2776
041d709f
CY
2777*** buffer-substring-filters is obsolete.
2778Use `filter-buffer-substring-functions' instead.
2779
2780*** `byte-compile-disable-print-circle' is obsolete.
2781
2782*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
2783Use `post-command-hook' instead.
2784
67e729a5
CY
2785*** `font-lock-maximum-size' is obsolete.
2786
eb199145 2787\f
93e0bed6 2788* Changes in Emacs 24.1 on Non-Free Operating Systems
d53a60a6 2789
7a22e700 2790** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
2791and also when HOME is set to C:\ by default.
2792
7a22e700 2793** New configure.bat options
04779484 2794
7a22e700 2795*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 2796
7a22e700 2797*** --distfiles specifies files to be included in binary distribution.
e2574f2c 2798
7a22e700
OK
2799*** --without-gnutls disables automatic GnuTLS detection.
2800
a0d363f4 2801*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 2802
0a19a6f8 2803** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 2804
1f5e1a16
GM
2805** The Lisp function `w32-default-color-map' is now obsolete.
2806(It is only used internally in the Emacs C code.)
5430d399 2807
1f5e1a16
GM
2808** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
2809reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 2810
ad7c802c
CY
2811** On Mac OS X, dragging a file into Emacs visits the file, like on
2812other platforms, rather than inserting its contents into the buffer.
2813
05197f40 2814\f
a933dad1 2815----------------------------------------------------------------------
5b87ad55 2816This file is part of GNU Emacs.
a933dad1 2817
ab73e885 2818GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 2819it under the terms of the GNU General Public License as published by
ab73e885
GM
2820the Free Software Foundation, either version 3 of the License, or
2821(at your option) any later version.
5b87ad55
GM
2822
2823GNU Emacs is distributed in the hope that it will be useful,
2824but WITHOUT ANY WARRANTY; without even the implied warranty of
2825MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2826GNU General Public License for more details.
a933dad1 2827
5b87ad55 2828You should have received a copy of the GNU General Public License
ab73e885 2829along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 2830
05197f40 2831\f
a933dad1
DL
2832Local variables:
2833mode: outline
2834paragraph-separate: "[ \f]*$"
2835end: