* lisp/isearch.el (isearch-mode-map): Remove [escape] key bindinds.
[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
a1ed8b05 17Temporary note:
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18+++ indicates that all necessary updates to the manuals in doc/ are complete.
19--- means no change in the manuals is needed.
20When you add a new item, use the appropriate mark if you know it applies,
21otherwise leave it unmarked.
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22
23\f
95a32efb 24* Installation Changes in Emacs 24.4
7c3d167f 25
ffdc270a 26** Emacs can be compiled with ACL support.
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27This happens by default if a suitable support library is found at
28build time, like libacl on GNU/Linux. To prevent this, use the
ffdc270a 29configure option `--disable-acl'.
7c3d167f 30
2f23b3ab 31** Emacs can be compiled with file notification support.
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32This happens by default if a suitable system library is found at
33build time. To prevent this, use the configure option
34`--with-file-notification-no'. See below for file-notify features.
35FIXME? This feature is not available for the Nextstep port. (?)
2f23b3ab 36
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37** The configure option `without-compress-info' has been generalized,
38and renamed to `without-compress-install'. It now prevents compression
39of _any_ files during installation.
40
aec32f66 41** The configure option --with-crt-dir has been removed.
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42It is no longer needed, as the crt*.o files are no longer linked
43specially.
44
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45** Directories passed to configure option `--enable-locallisppath' are
46no longer created during installation.
47
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48** Emacs can be compiled with zlib support. If this library is present
49(which it normally is on most systems), the function
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50`zlib-decompress-region' becomes available, which can decompress gzip-
51and zlib-format compressed data.
313546eb 52
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53---
54** Emacs for NS (OSX, GNUStep) can be built with ImageMagick support.
55pkg-config is required to find ImageMagick libraries.
56
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57** For OSX >= 10.5, the Core text based font backend from the Mac port is used.
58For GNUStep and OSX 10.4 the old backend is used.
59To use the old backend by default, do on the command line:
60% defaults write org.gnu.Emacs FontBackend ns
61
c57b2d76 62\f
95a32efb 63* Startup Changes in Emacs 24.4
c57b2d76 64
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65+++
66** When initializing `load-path', an empty element in the EMACSLOADPATH
67environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
68"/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
69load-path (the one that would have been used if EMACSLOADPATH was unset).
70This makes it easier to _extend_ the load-path via EMACSLOADPATH
71(previously, EMACSLOADPATH had to specify the complete load-path,
72including the defaults). (In older versions of Emacs, an empty element
73was replaced by ".", so use an explicit "." now if that is what you want.)
74
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75+++
76** The -L option, which normally prepends its argument to load-path,
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77will instead append, if the argument begins with `:' (or `;' on MS Windows;
78i.e., `path-separator').
a0833f62 79
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80+++
81** If you use either site-load.el or site-init.el to customize the dumped
82Emacs executable, any changes to `load-path' that these files make
83will no longer be present after dumping. To affect a permanent change
84to `load-path', use the `--enable-locallisppath' option of `configure'.
85
c57b2d76 86\f
95a32efb 87* Changes in Emacs 24.4
c6c08d3f 88
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89+++
90** Emacs now supports menus on text-mode terminals.
91If the terminal supports a mouse, clicking on the menu bar, or on
92sensitive portions of the mode line or header line, will drop down the
93menu defined at that position. Likewise, clicking C-mouse-2 or
94C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
95for those locations.
96
97If the text terminal does not support a mouse, you can activate the
98first menu-bar menu by typing F10, which invokes `menu-bar-open'.
99
100If you want the previous behavior, whereby F10 invoked `tmm-menubar',
101customize the option `tty-menu-open-use-tmm' to a non-nil value.
102(Typing M-` will always invoke `tmm-menubar', even if
103`tty-menu-open-use-tmm' is nil.)
104
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105** Key ? also describes prefix bindings like C-h.
106
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107+++
108** `cache-long-line-scans' has been renamed to `cache-long-scans'
109because it affects caching of paragraph scanning results as well.
110
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111+++
112** `apropos-variable' is now `apropos-user-option'
113`apropos-user-option' shows all user options while `apropos-variable'
114shows all variables. When called with a universal prefix argument,
115the two commands swap their behaviors. When `apropos-do-all' is
116non-nil, they output the same results.
117
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118+++
119** `eval-defun' on an already defined defcustom calls the :set function,
120if there is one.
121
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122** If the new variable `enable-dir-local-variables' is nil,
123directory local variables are ignored. May be useful for some modes
124that want to ignore directory-locals while still respecting file-locals.
125
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126** The option `set-mark-default-inactive' has been deleted.
127This unfinished feature was introduced by accident in Emacs 23.1;
128simply disabling Transient Mark mode does the same thing.
129
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130** `initial-buffer-choice' can now specify a function to set up the
131initial buffer.
132
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133** The *Messages* buffer is created in a new major mode `messages-buffer-mode',
134and read-only. Code that might create the *Messages* buffer should
135call the function `messages-buffer' to do so and set the mode.
136
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137** `remember-notes' creates a buffer whose content is saved on kill-emacs.
138You may think of it as a *scratch* buffer whose content is preserved.
139In fact, it was designed as a replacement for *scratch* buffer and can
140be used that way by setting `initial-buffer-choice' to `remember-notes'
141and `remember-notes-buffer-name' to "*scratch*". Without the second
142change, *scratch* buffer will still be there for notes that do not
143need to be preserved.
144
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145** `write-region-inhibit-fsync' now defaults to t in batch mode.
146
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147** ACL support has been added.
148+++
149*** Emacs preserves the ACL entries of files when backing up.
150+++
151*** New functions `file-acl' and `set-file-acl' get and set the ACL
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152entries of a file. On GNU/Linux, the POSIX ACL interface is used via
153libacl. On MS-Windows, the NT Security APIs are used to emulate the
154POSIX ACL interfaces.
7c3d167f 155
99548339 156** New option `scroll-bar-adjust-thumb-portion'.
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157Available only on X, this option allows to control over-scrolling
158using the scroll bar (i.e. dragging the thumb down even when the end
159of the buffer is visible).
99548339 160
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161** New function `add-face-text-property' has been added, which can be
162used to conveniently prepend/append new face attributes to text.
163
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164** In compiled Lisp files, the header no longer includes a timestamp.
165
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166** Multi-monitor support has been added.
167
168*** New functions `display-monitor-attributes-list' and
169`frame-monitor-attributes' can be used to obtain information about
170each physical monitor on multi-monitor setups.
171
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172*** The functions `display-pixel-width' and `display-pixel-height' now
173behave consistently among the platforms: they return the pixel width
174or height for all physical monitors associated with the given display
175as just they were on X11. To get information for each physical
176monitor, use the new functions above. Similar notes also apply to
177`x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
178`display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
179
652b969e 180** New macro `define-alternatives' can be used to define generic commands.
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181Generic commands are interactive functions whose implementation can be
182selected among several alternatives, as a matter of user preference.
183
f88ac3bb 184** New hooks `focus-in-hook', `focus-out-hook'.
f6083c67 185These are normal hooks run when an Emacs frame gains or loses input focus.
f88ac3bb 186
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187** The blink cursor stops blinking after 10 blinks (default) on X and NS.
188You can change the default by customizing the variable blink-cursor-blinks.
189Also timers for blinking are stopped when no blinking is done, so Emacs does
190not consume CPU cycles.
191
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192** New command `frameset-to-register' is now bound to `C-x r f', replacing
193`frame-configuration-to-register'. It offers similar functionality, plus
194some enhancements, like the ability to restore deleted frames. Command
195`frame-configuration-to-register' is still available, but unbound.
196
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197** The command `quail-help' is deleted. Use `C-h C-\'
198(`describe-input-method') instead.
199
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200** The default value of `comment-use-global-state' is changed to t,
201and this variable has been marked obsolete.
202
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203** `fill-single-char-nobreak-p' prevents fill from breaking a line after
204a 1-letter word, which is an error according to Polish and
205Czech typography rules. To globally enable this feature, evaluate:
206
207 (add-hook 'fill-nobreak-predicate 'fill-single-char-nobreak-p)
208
c57b2d76 209\f
95a32efb 210* Editing Changes in Emacs 24.4
4f0552c2 211
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212** `electric-indent-mode' is enabled by default.
213
d5ccb7be 214** Uniquify is enabled by default with post-forward-angle-brackets style.
4e36a6a6 215
7818df11 216** Command `rectangle-mark-mode' bound to C-x SPC makes a rectangular region.
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217Most commands are still unaware of it, but kill/yank do work on the rectangle.
218
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219** C-x TAB enters a transient interactive mode.
220You can then use the left/right cursor keys to move the block of text.
221
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222** `tab-stop-list' is now implicitly extended to infinity by repeating
223the last step. Its default value is changed to nil which means a tab
224stop every `tab-width' columns.
b7d5bd82 225
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226** `split-window' is no longer a command, just a non-interactive function.
227As a command it was a special case of `split-window-below', and as such
228superfluous. After being reimplemented in Lisp, its interactive form
229was mistakenly retained.
230
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231** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
232bound to <f11> and M-<f10>, respectively.
37f38bca 233
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234** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
235Eg View mode, etc.
236
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237+++
238** New option `visual-order-cursor-movement'.
239If this is non-nil, cursor motion with arrow keys will follow the
240visual order of characters on the screen: <left> always moves to the
241left, <right> always moves to the right, disregarding the surrounding
242bidirectional context.
243
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244** All register commands can now show help with preview.
245
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246** New command `kmacro-to-register' to store keyboard macros in registers.
247
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248** Shell Script mode
249
250*** `sh-mode' now has the mode own `add-log-current-defun-function'.
251You can pick the name of the function and the variables with `C-x 4 a'.
252
4f0552c2 253\f
95a32efb 254* Changes in Specialized Modes and Packages in Emacs 24.4
4f0552c2 255
7ae3ae39 256** CUA-mode
2013a2f9 257*** CUA-mode was changed to make use of delete-selection-mode and
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258shift-select-mode. So you can now enable it independently from
259transient-mark-mode, delete-selection-mode, and shift-select-mode.
260As a result, cua-highlight-region-shift-only is obsolete
261(you can disable transient-mark-mode to get the same result).
2013a2f9 262*** CUA's rectangles can now be used via `cua-rectangle-mark-mode'.
7ae3ae39 263
4b72c12b 264** `delete-selection-mode' can be used without transient-mark-mode.
f345395c 265
fdab3d0b 266** prolog-use-smie has been removed, along with the non-SMIE indentation code.
eb89dc14 267
71e3276b 268** SMIE indentation can be customized via `smie-config'.
a67c4ae0 269The customization can be guessed by Emacs by providing a sample indented
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270file and letting SMIE learn from it.
271
272** sh-script now uses its SMIE indentation algorithm by default.
273
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274** `eshell' now supports visual subcommands and options
275Eshell has been able to handle "visual" commands (interactive,
276non-line oriented commands such as top that require display
277capabilities not provided by eshell) by running them in an Emacs
278terminal emulator. See `eshell-visual-commands'.
279
280This feature has been extended to subcommands and options that make a
281usually line-oriented command a visual command. Typical examples are
282"git log" and "git <command> --help" which display their output in a
283pager by default. See `eshell-visual-subcommands' and
284`eshell-visual-options'.
285
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286** If your Emacs is compiled with libxml2 support, you can use the new
287built-in web browser `eww'.
288
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289** `remember' can now store notes in separates files
290You can use the new function `remember-store-in-files' within the
291`remember-handler-functions' option.
292
293See `remember-data-directory' and `remember-directory-file-name-format'
294for new options related to this function.
deee89ff 295
fba1763d 296** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
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297Affected files:
298~/.emacs.d/timelog replaces ~/.timelog
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299~/.emacs.d/vip replaces ~/.vip
300~/.emacs.d/viper replaces ~/.viper
301~/.emacs.d/ido.last replaces ~/.ido.last
302~/.emacs.d/kkcrc replaces ~/.kkcrc
303~/.emacs.d/quickurls replaces ~/.quickurls
304~/.emacs.d/idlwave replaces ~/.idlwave
305~/.emacs.d/bdfcache.el replaces ~/.bdfcache.el
306~/.emacs.d/places replaces ~/.emacs-places
307~/.emacs.d/shadows replaces ~/.shadows
308~/.emacs.d/shadow_todo replaces ~/.shadow_todo
309~/.emacs.d/strokes replaces ~/.strokes
310~/.emacs.d/notes replaces ~/.notes
311~/.emacs.d/type-break replaces ~/.type-break
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312Also the following files used by the now obsolete otodo-mode.el:
313~/.emacs.d/todo-do replaces ~/.todo-do
314~/.emacs.d/todo-done replaces ~/.todo-done
315~/.emacs.d/todo-top replaces ~/.todo-top
316
e56221d5 317
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318** Delphi mode is now called OPascal mode.
319*** All delphi-* variables and functions have been renamed to opascal-*.
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320*** `delphi-newline-always-indents' is not supported any more.
321Use `electric-indent-mode' instead.
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322*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.
323
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324** Eldoc Mode works properly in the minibuffer.
325
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326** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.
327
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328** completing-read-multiple's separator can now be a regexp.
329The default separator is changed to allow surrounding spaces around the comma.
330
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331** The backtrace debugger and local variables:
332*** The debugger's `e' command evaluates the code in the context at point.
333This includes using the lexical environment at point, which means that
334`e' now lets you access lexical variables as well.
335*** The backtrace debugger can display local vars with `v'.
336
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337** Battery
338
339*** Battery information via the BSD `apm' utility is now supported.
340
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341** Buffer Menu
342
343*** `M-s a C-o' shows lines matching a regexp in marked buffers using Occur.
344
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345** Calendar and Diary
346
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347*** New faces: `calendar-weekday-header', `calendar-weekend-header',
348`calendar-month-header'.
349
350*** New option `calendar-day-header-array'.
351
352*** The variable `calendar-font-lock-keywords' is obsolete.
353
fd3a9a6b 354+++
f8780a05 355*** New variable `diary-from-outlook-function', used by the command
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356`diary-from-outlook'.
357
f6e8d3c1 358** VC and related modes
7aa7fff0 359
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360*** In VC directory mode, `D' displays diffs between VC-controlled
361whole tree revisions.
362
363*** In VC directory mode, `L' lists the change log for the current VC
364controlled tree in a window.
365
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366*** In VC directory mode, `I' shows a log of changes that will be
367received with a pull operation.
368
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369*** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
370under current version control system. When called with a prefix
371argument, you can remove a file from the ignored file list.
7aa7fff0 372
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373*** `cvs-append-to-ignore' has been renamed to `vc-cvs-append-to-ignore'
374because it is moved to vc-cvs.el.
375
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376** cl-lib
377
378*** New macro cl-tagbody.
379
380+++
381*** letf is now just an alias for cl-letf.
382
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383** Calc
384
385*** Calc by default now uses the Gregorian calendar for all dates, and
386uses January 1, 1 AD as its day number 1. Previously Calc used the
387Julian calendar for dates before September 14, 1752, and it used
388December 31, 1 BC as its day number 1; the new scheme is more
389consistent with Calendar's calendrical system and day numbering.
390
391*** The new variable `calc-gregorian-switch' lets you configure the
392date when Calc switches from the Julian to the Gregorian calendar.
393Nil, the default value, means to always use the Gregorian calendar.
394The value (YEAR MONTH DAY) means to start using the Gregorian calendar
395on the given date.
396
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397*** Support for ISO 8601 dates.
398
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399** Desktop
400
401*** `desktop-auto-save-timeout' defines the number of seconds between
402auto-saves of the desktop.
403
b958c0ad 404*** `desktop-restore-frames', enabled by default, allows saving and
6585d561 405restoring the frame/window configuration (frameset). Additional options
36bec1b6 406`desktop-restore-in-current-display', `desktop-restore-reuses-frames'
6585d561 407and `desktop-restore-forces-onscreen' offer further customization.
39c0e36f 408
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409** Dired
410
411*** New minor mode `dired-hide-details-mode' hides details.
412
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413** ERC
414
415*** New option `erc-accidental-paste-threshold-seconds'.
416If set to a number, this can be used to avoid accidentally paste large
417amounts of data into the ERC input.
418
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419** EPA
420
421*** New option `epa-mail-aliases'.
422
423You can set this to a list of alias expansions for keys to use
424in `epa-mail-encrypt'.
425
426If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
427that means: when one of the recipients of the message being encrypted
428is `foo@bar.com', encrypt the message for `foo@hello.org' instead.
429
430If one element of the variable's value is ("foo@bar.com"),
431that means: when one of the recipients of the message being encrypted
432is `foo@bar.com', ignore that name as regards encryption.
433This is useful to avoid a query when you have no key for that name.
434
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435---
436** New F90 mode option `f90-smart-end-names'.
437
02f473a4 438** Icomplete is a bit more like Ido.
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439*** key bindings to navigate through and select the completions.
440*** The icomplete-separator is customizable, and its default has changed.
441*** Removed icomplete-show-key-bindings.
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442*** Icomplete-mode by defaults applies to all forms of minibuffer completion.
443(setq icomplete-with-completion-tables '(internal-complete-buffer))
444will revert to the old behavior.
445
21859ebc 446
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447** New features for Octave mode:
448*** Font locking for texinfo comments and new keywords
449*** Completion in Octave file buffers
450*** Eldoc support
451*** Jump to definition
452*** Documentation lookup/search
453*** Code cleanup and various bug fixes
454
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455** Ido
456*** Ido has a manual now.
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457*** `ido-use-virtual-buffers' takes a new value 'auto.
458*** `ido-decorations' has been slightly extended to give a bit more control.
3f0faa45 459
2a43515a 460** Image mode
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461
462*** New commands `n' (`image-next-file') and `p' (`image-previous-file')
463visit the next image file and the previous image file in the same
464directory, respectively.
465
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466*** New commands to show specific frames of multi-frame images.
467`f' (`image-next-frame') and `b' (`image-previous-frame') visit the
468next or previous frame. `F' (`image-goto-frame') shows a specific frame.
469
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470*** New commands to speed up, slow down, or reverse animation.
471
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472---
473*** The command `image-mode-fit-frame' deletes other windows.
474When toggling, it restores the frame's previous window configuration.
475It also has an optional frame argument, which can be used by Lisp
476callers to fit the image to a frame other than the selected frame.
477
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478** Info
479
480*** New face `info-index-match' is used to highlight matches in index
481entries displayed by `Info-index-next', `Info-virtual-index' and
482`info-apropos'.
483
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484** Hi-Lock
485
486*** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
487will cycle through faces in `hi-lock-face-defaults' without prompting.
488
489+++
490*** New global command `M-s h .' (`highlight-symbol-at-point')
491highlights the symbol found near point without prompting,
492using the next face automatically.
493
d289938a 494** Search and Replace
279f9b06 495
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496*** New global command `M-s .' (`isearch-forward-symbol-at-point')
497starts a symbol (identifier) incremental search forward with the
498symbol found near point added to the search string initially.
499
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500*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
501and adds it to the search string.
502
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503*** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
504between nil and the value of the option `search-invisible' (or `open'
505when it's nil).
01dea85f 506
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507*** `query-replace' skips invisible text when `search-invisible' is nil,
508and opens overlays with hidden text when `search-invisible' is `open'.
509
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510+++
511*** By default, prefix arguments do not now terminate Isearch mode.
512Set `isearch-allow-prefix' to nil to restore old behavior.
513
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514*** More Isearch commands accept prefix arguments, namely
515`isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
516`isearch-yank-line'.
517
a22289f7
JL
518*** Word search now matches whitespace at the beginning/end
519of the search string if it contains leading/trailing whitespace.
520In an incremental word search or when using a non-nil LAX argument
521of `word-search-regexp', the lax matching can also match part of
522the first word (in addition to the lax matching of the last word).
523The same rules are now applied to the symbol search with the difference
524that it matches symbols, and non-symbol characters between symbols.
525
5a3cbc03 526** MH-E has been updated to MH-E version 8.5.
6827cac1
BW
527See MH-E-NEWS for details.
528
13a40633
GM
529---
530** The unrmail command converts from BABYL to mboxrd rather than mboxo.
531Customize `unrmail-mbox-format' to change this.
532
533---
534** Similarly, customize `rmail-mbox-format' to influence some minor aspects
535of how Rmail displays non-MIME messages.
536
4f0552c2
GM
537+++
538** New function `ses-rename-cell' to give SES cells arbitrary names.
539
8b62d742
SM
540** trace-function was largely rewritten.
541New features include:
542- no prompting for the destination buffer, unless a prefix-arg was used.
543- additionally to prompting for a destination buffer, when a prefix-arg is
544 used, the user can enter a "context", i.e. Lisp expression whose value at the
545 time the function is entered/exited will be printed along with the function
546 name and arguments. Useful to trace the value of (current-buffer) or
547 (point) when the function is invoked.
548
9631677d
SS
549** New command `delete-duplicate-lines' has new types of operation:
550When its arg ADJACENT is non-nil (when called interactively with C-u C-u)
c38a186c
JL
551it works like the utility `uniq'. Otherwise by default it deletes
552duplicate lines everywhere in the region without regard to adjacency.
02f473a4
JB
553When its arg KEEP-BLANKS is non-nil (when called interactively with
554C-u C-u C-u), duplicate blank lines are preserved.
c38a186c 555
ad4de702
MN
556** New `cycle-spacing' command allows cycling between having just one
557space, no spaces, or reverting to the original spacing. Like
558`just-one-space' command it can handle or ignore newlines and
559leave different number of spaces.
560
d29bf51c
SB
561** Todo mode has been rewritten and enhanced.
562New features include:
563- support for multiple todo files and archive files of done items;
564- renaming, reordering, moving, merging, and deleting categories;
565- sortable tabular summaries of categories and the types of items they contain;
adc5dbce 566- cross-category lists of items filtered by specific criteria;
d29bf51c
SB
567- more fine-grained interaction with the Emacs diary, by being able to decide
568 for each todo item whether it appears in the Fancy Diary display;
569- highly flexible new item insertion and item editing;
570- moving items between categories, storing done items in their category or in
571 archive files, undoing or unarchiving done items;
572- reprioritizing items by inputting a numerical priority;
573- extensive customizability of operation and display, including numerous faces.
8bcced1f 574The Todo mode user manual describes all commands and most user options.
d29bf51c
SB
575To support some of these features, a new file format is used, which is
576incompatible with the old format; however, you can convert old todo and done
577item files to the new format on initializing the first new todo file, or at any
578later time with the provided conversion command. The old version of
579todo-mode.el has been made obsolete and renamed otodo-mode.el.
580
aefa2ead 581** Tramp
26280467 582
179923f7
MA
583*** The experimental url syntax for remote file names is withdrawn.
584
aefa2ead
MA
585+++
586*** New connection method "adb", which allows to access Android
19dc8b9e
MA
587devices by the Android Debug Bridge. The variable `tramp-adb-program'
588can be used to adapt the path of the "adb" program, if needed.
26280467 589
19dc8b9e
MA
590*** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
591"scpc" and "rsyncc" are discontinued. The ssh option
592"ControlMaster=auto" is set automatically in all ssh-based methods,
593when possible.
26280467 594
ed7367b1
MA
595+++
596*** Handlers for `file-acl' and `set-file-acl' for remote machines
597which support POSIX ACLs.
aefa2ead 598
f1c7dee9
MA
599+++
600*** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
601for remote machines which support filesystem notifications.
602
238cebef
GM
603** VHDL mode
604
605*** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
606
607*** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
608
433212bf
CY
609** Woman
610
611*** The commands `woman-default-faces' and `woman-monochrome-faces'
88c45e34 612are obsolete. Customize the `woman-*' faces instead.
433212bf 613
aa534cb7
AG
614** Eshell
615
f1c7dee9 616*** Added Eshell-Tramp module
aa534cb7 617External su and sudo commands are now the default; the internal,
f1c7dee9 618Tramp-using variants can still be used by enabling the eshell-tramp
aa534cb7
AG
619module.
620
750ae9b2
DG
621** Package
622
623*** The format of `archive-contents' files, generated by package
0fb17a18
DG
624repositories, has changed to allow a new (fifth) element in the data
625vectors, containing an associative list with extra properties.
750ae9b2
DG
626
627*** `describe-package' buffer uses the `:url' extra property to
628display a `Homepage' header, if it's present.
629
bb102690
GM
630** New term.el option `term-suppress-hard-newline'.
631
fa5265fc
DE
632** CEDET
633
634*** EDE
635
636**** The cpp-root project now supports executing a compile command.
637It can be set through the new :compile-command slot or the
638buffer-local variable `compile-command'.
639
640**** Better selection of include directories for the 'linux' project.
641Include directories now support out-of-tree build directories and
642target architecture auto-detection.
643
644*** Semantic
645
646**** Improved detection of used namespaces in current scope in C++.
647
648**** Parsing of default values for variables and function arguments in C/C++.
649They are also displayed by the summarize feature in the modeline.
650
651**** Improved parsing of function pointers in C/C++.
652This also includes parsing of function pointers as function arguments.
653
654**** Parsing of C/C++ preprocessor macros which open new scope.
655For example, this enables parsing of macros which open new namespaces.
656
657**** Support for 'this' pointer in inline member functions in C++.
658
770de7cf
CY
659** Obsolete packages:
660
122a7e46
SM
661*** Iswitchb is made obsolete by icomplete-mode.
662
770de7cf
CY
663*** longlines.el is obsolete; use visual-line-mode instead.
664
27c8b6eb
GM
665+++
666*** sup-mouse.el.
667
ce3e7725
CY
668*** terminal.el is obsolete; use term.el instead.
669
d29bf51c
SB
670*** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.
671
30bce3f0
MA
672*** xesam.el.
673
4e16ddf4
GM
674+++
675*** yow.el is obsolete; use fortune.el or cookie1.el instead.
676
5313bbc7
GM
677---
678*** The Info-edit command is obsolete. Editing Info nodes by hand
679has not been relevant for some time.
680
0463c1ef
PE
681** Shell
682
683*** `explicit-bash-args' now always defaults to use --noediting.
684During initialization, Emacs no longer expends a process to decide
685whether it is safe to use Bash's --noediting option. These days
686--noediting is ubiquitous; it was introduced in 1996 in Bash version 2.
687
990b9f68
MA
688+++
689** There is a new macro `skip-unless' for skipping ERT tests. See the manual.
690
ee4f0261
DG
691** Imenu
692
693*** New option `imenu-generic-skip-comments-and-strings'.
694
1ecfd96e
BB
695** Ruby mode
696
697*** New option `ruby-encoding-magic-comment-style'.
698
699*** New option `ruby-custom-encoding-magic-comment-template'.
700
701*** New mode menu.
702
703*** Improved syntax highlighting and indentation.
704
705*** Add more Ruby file types to `auto-mode-alist'.
706
47e59c66
DG
707** JS Mode
708
709*** Better indentation of multiple-variable declarations.
710If declaration spans several lines, variables on the following lines
711are lined up to the first one.
712
713*** We now recognize and better indent continuations in array
714comprehensions.
715
716*** New option `js-switch-indent-offset`.
717
4f0552c2 718\f
95a32efb 719* New Modes and Packages in Emacs 24.4
02f473a4 720
002668e1
TZ
721** New `superword-mode' in subword.el
722`superword-mode' overrides the default word motion commands to treat
723symbol_words as a single word, similar to what `subword-mode' does and
724using the same internal functions.
725
231d8498
SM
726** New nadvice.el package offering lighter-weight advice facilities.
727It is layered as:
728- add-function/remove-function which can be used to add/remove code on any
729 function-carrying place, such as process-filters or `<foo>-function' hooks.
730- advice-add/advice-remove to add/remove a piece of advice on a named function,
731 much like `defadvice' does.
732
8cd4636c
JB
733** New frameset.el package.
734It provides a set of operations to save a frameset (the state of all
735or a subset of the existing frames and windows, somewhat similar to a
736frame configuration), both in-session and persistently, and restore it
737at some point in the future.
738
fb830820
MA
739+++
740** The package filenotify.el provides an interface for file system
f1c7dee9
MA
741notifications. It requires, that Emacs is compiled with one of the
742low-level libraries gfilenotify.c, inotify.c or w32notify.c.
743
c57b2d76 744\f
95a32efb 745* Incompatible Lisp Changes in Emacs 24.4
da03ef8a 746
3472b6c6
SM
747** `kill-region' lost its `yank-handler' optional argument.
748
ef566920
BR
749** `(input-pending-p)' no longer runs other timers which are ready to
750run. The new optional CHECK-TIMERS param allows for the prior behavior.
751
a104f656
SM
752** `defvar' and `defcustom' in a let-binding affect the "external" default.
753
db3b7db5
SM
754** The syntax of ?» and ?« is now punctuation instead of matched parens.
755Some languages match those as »...« and others as «...» so better stay neutral.
756
0b31660d
SM
757** The default file coding for Emacs Lisp files is now utf-8.
758(See file-coding-system-alist.) In most cases, this change is transparent, but
759files that contain unusual characters without specifying an explicit coding
760system may fail to load with obscure errors.
179fcac8 761You should either convert them to utf-8 or add an explicit `coding:' cookie.
0b31660d 762
bfa3acd6
SM
763** overriding-terminal-local-map does not replace the local keymaps any more.
764It used to disable the minor mode, major mode, and text-property keymaps,
765whereas now it simply has higher precedence.
766
a0eb10b3 767** Default process filters and sentinels are not nil any more.
1aa8d505
SM
768Instead they default to a function which does what the nil value used to do.
769
25c09217
SM
770** `read-event' does not return decoded chars in ttys any more.
771Just as was the case in Emacs-22 and before, decoding of tty input according to
772keyboard-coding-system is not performed in read-event any more. But contrary
773to that past, it is still done before input-decode-map/function-key-map/...
774
99d0d6dc
SM
775** Removed inhibit-local-menu-bar-menus.
776
e02230bf
SM
777** frame-local variables that affect redisplay do not work any more.
778More specifically, the redisplay does not bother to check for a frame-local
779value when looking up variables.
780
eadf1faa
SM
781** nil and "unbound" are indistinguishable in symbol-function.
782`symbol-function' never signals `void-function' any more.
783`fboundp' returns non-nil if the symbol was `fset' to nil.
784
3c442f8b
SM
785** `defadvice' does not honor the `freeze' flag and cannot advise
786special-forms any more.
7db1bda8 787
da03ef8a
SM
788** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
789VAR was bound to nil which was not tremendously useful and just lead to
790spurious warnings about an unused var.
791
7c3d167f
RF
792** The return value of `backup-buffer' has changed.
793The second argument is no longer an SELinux context, instead it is an
794alist of extended attributes as returned by the new function
795`file-extended-attributes'. The attributes can be applied to another
796file using `set-file-extended-attributes'.
797
954b166e
PE
798** `visited-file-modtime' now returns -1 for nonexistent files.
799Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
800in the presence of files with negative time stamps.
1af4c220
GM
801
802** The cars of the elements in `interpreter-mode-alist' are now treated
2a08047a
GM
803as regexps rather than literal strings. Technically this is an
804incompatible change, but unless you are using interpreter-mode-alist
805for something (not just adding elements to it), it ought not to affect you.
1af4c220 806
c57b2d76 807\f
97a1cd9d 808* Lisp Changes in Emacs 24.4
57618ecf 809
740bcff0
SM
810** New function get-pos-property.
811
3472b6c6
SM
812** New hook `pre-redisplay-function'.
813
2b2d19f2 814+++
ac776dae
EZ
815** Functions that pop up menus and dialogs now work on all terminal types,
816including TTYs.
0a12fca0
EZ
817This includes `x-popup-menu', `x-popup-dialog', `message-box',
818`yes-or-no-p', etc.
819
ffe759eb
EZ
820The function `display-popup-menus-p' will now return non-nil for a
821display or frame whenever a mouse is supported on that display or
822frame.
823
3e0b94e7
DC
824** New bool-vector set operation functions:
825*** `bool-vector-exclusive-or'
826*** `bool-vector-union'
827*** `bool-vector-intersection'
828*** `bool-vector-set-difference'
829*** `bool-vector-not'
25201ef0 830*** `bool-vector-subsetp'
ec2c4ee6
PE
831*** `bool-vector-count-consecutive'
832*** `bool-vector-count-population'
3e0b94e7 833
ebb99847
BR
834** Comparison functions =, <, >, <=, >= now take many arguments.
835
8c27f5ff
SM
836** The second argument of `eval' can now be a lexical-environment.
837
838** `with-demoted-errors' takes an additional argument `format'.
54bd972f
SM
839+++
840** New function `define-error'.
841
7fd72e2c
SM
842** New hook `tty-setup-hook'.
843
de0503df
SM
844+++
845** New macro with-eval-after-load. Like eval-after-load, but better behaved.
846
7b530552
BB
847** New library helpers.el for misc helper functions
848*** `hash-table-keys'
849*** `hash-table-values'
015b3b3e
BB
850*** `string-blank-p`
851*** `string-empty-p`
4301875e 852*** `string-join`
447bdcb8 853*** `string-reverse`
b55aea38
BB
854*** `string-trim-left'
855*** `string-trim-right'
856*** `string-trim'
7b530552 857
dd8791e9 858** Obsoleted functions:
89561f72 859*** `log10'
dd8791e9
SM
860*** `dont-compile'
861*** `lisp-complete-symbol'
862*** `field-complete'
863*** `minibuffer-completion-contents'
66fc57e3
JL
864*** `isearch-nonincremental-exit-minibuffer'
865*** `isearch-filter-visible'
e3eb1bb7 866*** `generic-make-keywords-list'
d3e9f3a8 867
d36ed1c8
SM
868** `with-wrapper-hook' is obsoleted by `add-function'.
869The few hooks that used with-wrapper-hook are replaced as follows:
870*** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
871*** `completion-in-region-function' obsoletes `completion-in-region-functions'.
872*** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.
873
2bb3a748
BB
874** `byte-compile-interactive-only-functions' is now obsolete.
875It has been replaced by the symbol property 'interactive-only.
876
77c92cb9
RS
877** `split-string' now takes an optional argument TRIM.
878The value, if non-nil, is a regexp that specifies what to trim from
879the start and end of each substring.
d36ed1c8 880
41ce6f70
BB
881** New function `string-suffix-p'.
882
f557c1b1
SM
883** `get-upcase-table' is obsoleted by the new `case-table-get-table'.
884
81606b10
RS
885** Support for filesystem notifications.
886Emacs now supports notifications of filesystem changes, such as
887creation, modification, and deletion of files. This requires the
2f23b3ab
MA
888`glib' API, or the 'inotify' API (on GNU/Linux systems only). On
889MS-Windows systems, this is supported for Windows XP and newer
890versions.
81606b10 891
add89f61
MA
892** Changes in autorevert.el
893
894---
895*** If Emacs is compiled with file notification support, notifications
896are used instead of checking the time stamp of the files. You can
897disable this by setting the user option `auto-revert-use-notify' to
898nil. Alternatively, a regular expression of directories to be
899excluded from file notifications can be specified by
900`auto-revert-notify-exclude-dir-regexp'.
901
902---
903*** The new user option `auto-revert-remote-files' enables reversion
904of remote files when set to non-nil.
905
1c4f115d
CY
906** Face changes
907
02f473a4 908*** The function `face-spec-set' is now analogous to `setq' for face specs.
1c4f115d
CY
909Its third arg now accepts values specifying exactly which face spec to
910set (defface, custom, or user spec), and it directly sets the relevant
911property using the supplied face spec.
912
913*** Face specs set via Custom themes now replace the `defface' spec
914rather than inheriting from it (as do face specs set via Customize).
915
073ca75b
JL
916*** New face characteristic (supports :underline (:style wave))
917specifies whether or not the terminal can display a wavy line.
918
3c334c14 919*** New face spec attribute :distant-foreground
920d0654
XF
920specifies foreground to use if background color is near the foreground
921color that would otherwise have been used.
3c334c14 922
f0c954fa
GM
923** Image API
924
925+++
926*** `image-animated-p' is now `image-multi-frame-p'.
927It returns non-nil for any image that contains multiple frames,
928whether or not it specifies a frame delay.
929
930+++
931*** When animating images that do not specify a frame delay,
932Emacs uses `image-default-frame-delay'.
933
934+++
935*** New functions `image-current-frame' and `image-show-frame' for getting
936and setting the current frame of a multi-frame image.
937
3a2ddc2d
GM
938*** You can change the speed of animated images.
939
fa5265fc
DE
940** EIEIO
941
942*** Namespace cleanup by obsolete-aliasing functions to use `eieio-' prefix.
943**** object-name -> eieio-object-name
944**** object-class -> eieio-object-class
945**** object-class-fast -> eieio--object-class
946**** object-name-string -> eieio-object-name-string
947**** object-num-slots -> eieio--object-num-slots
948**** object-set-name-string -> eieio-object-set-name-string
949**** class-parent -> eieio-class-parent
950**** class-parents -> eieio-class-parents
951**** class-children -> eieio-class-children
952**** class-num-slots -> eieio--class-num-slots
953**** class-precedence-list -> eieio-class-precedence-list
954**** All generated class-* and object-* field accessors are now
955prefixed with `eieio-' as well.
956
957*** Obsoleted functions:
958**** class-of
959**** class-direct-subclasses
960**** class-direct-superclasses
961
1b796d6b
EZ
962** Changes in encoding and decoding of text
963
964---
965*** New coding-system `prefer-utf-8'.
966This is like `undecided' but prefers UTF-8 on decoding if the text to
967be decoded does not contain any invalid UTF-8 sequences. On encoding,
968any non-ASCII characters are automatically encoded as UTF-8.
969
970---
971*** New attributes of coding-systems whose type is `undecided'.
972Two new attributes, `:inhibit-null-byte-detection' and
973`:inhibit-iso-escape-detection', determine how to detect encoding of
974text that includes null bytes and ISO-2022 escape sequences,
975respectively. Each of these attributes can be either nil, zero, or
976t. If it is t, decoding text ignores null bytes and, respectively,
977ISO-2022 sequences. If it is nil, null bytes cause text to be decoded
978with no-conversion and ISO-2022 sequences cause Emacs to assume the
979text is encoded in one of the ISO-2022 encodings, such as
980iso-2022-7bit. If the value is zero, Emacs consults the variables
981inhibit-null-byte-detection and inhibit-iso-escape-detection, which
982see.
983The new attribute `:prefer-utf-8', if non-nil, causes Emacs to prefer
984UTF-8 encoding and decoding, whenever possible.
985
986These attributes are only meaningful for coding-systems of type
987`undecided'. (The type of a coding-system is determined by its
988`:coding-type' attribute and can be accessed by calling the
989`coding-system-type' function.)
990
954b166e
PE
991** The function `set-visited-file-modtime' now accepts a 0 or -1 argument
992with the same interpretation as the returned value of `visited-file-modtime'.
993
855b17af 994** time-to-seconds is not obsolete any more.
671d5c16 995** New functions special-form-p and macrop.
57618ecf
SM
996** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
997text-property on the first char.
998
32e5c58c
SM
999** The `defalias-fset-function' property lets you catch calls to defalias
1000and redirect them to your own function instead of `fset'.
1001
70743157 1002** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
b5029e23
PE
1003When you edit DIR/FILE, Emacs normally creates a symbolic link
1004DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
1005is being edited. Formerly, if there was already a non-symlink file
1006named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
1007through DIR/.#FILE.9. These fallbacks have been removed, so that
1008Emacs now no longer locks DIR/FILE in that case.
1009
70743157
PE
1010On file systems that do not support symbolic links, the lock is now a
1011regular file with contents being what would have been in the symlink.
b5029e23 1012
97976f9f
PE
1013** The 9th element returned by `file-attributes' is now unspecified.
1014Formerly, it was t if the file's gid would change if file were deleted
1015and recreated. This value has been inaccurate for years on many
1016platforms, and nobody seems to have noticed or cared.
1017
1018** The function `file-ownership-preserved-p' now has an optional
1019argument GROUP which causes it check for file group too. This can be
1020used in place of the 9th element of `file-attributes'.
1021
1022** New functions `group-gid' and `group-real-gid'.
1023
7c3d167f
RF
1024** The 6th argument to `copy-file' has been renamed to
1025`preserve-extended-attributes' as it now handles both SELinux context
1026and ACL entries.
1027
67982e2b
SM
1028** The `common-substring' argument of display-completion-list is obsolete.
1029Either use `completion-all-completions' which already returns highlighted
1030strings (including for partial or substring completion) or call
1031`completion-hilit-commonality' to add the highlight.
1032
8fa2654e
CS
1033** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4
1034
1035*** The package descriptor and name of global variables, constants,
0a2da075 1036and functions should be separated by two hyphens if the symbol is not
8fa2654e
CS
1037meant to be used by other packages.
1038
c57b2d76 1039\f
97a1cd9d 1040* Changes in Emacs 24.4 on Non-Free Operating Systems
95a32efb 1041
7605d081
GM
1042** The procedure for building Emacs on MS-Windows has changed.
1043It is now built by running the same configure script as on all other
1044platforms. This requires the MSYS environment and MinGW development
1045tools. See the updated instructions in nt/INSTALL for details.
671d4bfc
GM
1046
1047Using the Posix configure script and Makefile's also means a change in
1048the directory structure of the Emacs installation on Windows. It is
1049now the same as on GNU and Unix systems. In particular, the auxiliary
1050programs, such as cmdproxy.exe and hexl.exe, are in
1051libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
1052version), version-independent site-lisp is in share/emacs/site-lisp,
1053version-specific Lisp files are in share/emacs/VERSION/lisp and in
1054share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
1055files are in share/emacs/VERSION/etc. (Emacs knows about all these
1056directories and will find the files in there automatically; there's no
1057need to set any variables due to this change.)
1058
7df14908
EZ
1059+++
1060** Emacs on Windows 2000 and later can now access files and directories
1061whose names cannot be encoded in the current system codepage.
1062
1063The new variable `w32-unicode-filenames' controls this feature: if it
1064is t, Emacs uses Unicode APIs to pass file names to system calls,
1065which lifts the limitation of file names to the current locale.
1066
5248293f
GM
1067+++
1068** The "generate a backtrace on fatal error" feature now works on MS Windows.
1069The backtrace is written to the 'emacs_backtrace.txt' file in the
1070directory where Emacs was running.
1071
8549f9e8
EZ
1072+++
1073** The variable `buffer-file-type' is no longer supported.
1074Setting it has no effect, and %t in the mode-line format is ignored.
1075Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
1076modifying it has no effect.
1077
343a2aef
EZ
1078---
1079** Lock files now work on MS-Windows.
1080This allows to avoid losing your edits if the same file is being
1081edited in another Emacs session or by another user. See the node
1082"Interlocking" in the Emacs User Manual for the details. To disable
1083file locking, customize `create-lockfiles' to nil.
1084
c57b2d76
GM
1085** Improved fullscreen support on Mac OS X.
1086Both native (>= OSX 10.7) and "old style" fullscreen are supported.
1087Customize `ns-use-native-fullscreen' to change style. For >= 10.7
1088native is the default.
1089
95a32efb 1090\f
2a1e2476 1091* Installation Changes in Emacs 24.3
b8df54ff 1092
6bc66c10 1093** The default X toolkit is now Gtk+ version 3.
823b2fb6
GM
1094If you don't pass `--with-x-toolkit' to configure, or if you use
1095`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
1096to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
d71a6517 1097You can explicitly require a specific version by passing
823b2fb6 1098`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
da3d2105 1099
6bc66c10 1100** New configure option `--enable-link-time-optimization', to utilize
da3d2105
DA
1101an appropriate feature provided by GCC since version 4.5.0.
1102
33cb2043
GM
1103** New configure option `--without-all' to disable most of the optional
1104features (image support, etc.) that are normally enabled by default.
b8df54ff 1105
33cb2043
GM
1106** New configure option `--enable-gcc-warnings' (for developing/debugging
1107Emacs). If building with GCC, this enables compile-time checks that
64420fcd
GM
1108warn/give errors about possibly-questionable C code. On a recent GNU
1109system there should be no warnings; on older and on non-GNU systems
1110the results may be useful to developers.
b8df54ff 1111
823b2fb6 1112** The configure option `--enable-use-lisp-union-type' has been
6bc66c10 1113renamed to `--enable-check-lisp-object-type', as the resulting
d71a6517
GM
1114Lisp_Object type no longer uses a union to implement the compile time
1115check that this option enables.
1116
823b2fb6 1117** The configure option `--disable-maintainer-mode' has been removed,
501390c5
PE
1118as it was confusingly-named and rarely useful.
1119
f14a4380
GM
1120** The configure options `--program-prefix', `--program-suffix', and
1121`--program-transform-name' apply to more than just the installed
1122binaries. Now they also affect the man pages, icons, and the
1123etc/emacs.desktop file; but not the info pages, since this would break
1124links between the various manuals.
1a9c6830 1125
823b2fb6
GM
1126** You can use `NO_BIN_LINK=t make install' to prevent the installation
1127overwriting "emacs" in the installation bin/ directory with a link
6bc66c10 1128to "emacs-VERSION".
823b2fb6 1129
a4a18b8b
GM
1130** Emacs uses libtinfo in preference to libncurses, if available.
1131
187e9b90
GM
1132** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
1133/usr/pkg/lib to the linker search path. You must add them yourself if
1134you want them.
1135
6bc66c10 1136** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
276d5f5d
GM
1137(from the bin and libexec directories, respectively). The former is
1138no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
1139
a1ed8b05 1140\f
2a1e2476 1141* Startup Changes in Emacs 24.3
e5fcdb5e
GM
1142
1143** Emacs no longer searches for `leim-list.el' files beneath the standard
1144lisp/ directory. There should not be any there anyway. If you have
823b2fb6 1145been adding them there, put them somewhere else; e.g., site-lisp.
e5fcdb5e 1146
4107c81e
GM
1147** The `--no-site-lisp' command line option now works for Nextstep builds.
1148
a1ed8b05 1149\f
2a1e2476 1150* Changes in Emacs 24.3
a1ed8b05 1151
6bc66c10 1152** Help
c89926a5 1153
6bc66c10 1154*** `C-h f' (`describe-function') can now perform autoloading.
c89926a5
CY
1155When this command is called for an autoloaded function whose docstring
1156contains a key substitution construct, that function's library is
1157automatically loaded, so that the documentation can be shown
1158correctly. To disable this, set `help-enable-auto-load' to nil.
1159
1160*** `C-h f' now reports previously-autoloaded functions as "autoloaded",
1161even after their associated libraries have been loaded (and the
1162autoloads have been redefined as functions).
1163
6bc66c10 1164** ImageMagick
cd996018 1165
6bc66c10
GM
1166*** Images displayed via ImageMagick now support transparency and the
1167:background image specification property.
cd996018 1168
6bc66c10 1169*** When available, ImageMagick support is automatically enabled.
c505aaeb
CY
1170It is no longer necessary to call `imagemagick-register-types'
1171explicitly to install ImageMagick image types; that function is called
7d806bfe 1172automatically at startup, or when customizing an imagemagick- option.
2f940384 1173
c505aaeb 1174*** Setting `imagemagick-types-inhibit' to t now disables the use of
823b2fb6
GM
1175ImageMagick to view images. (You must call `imagemagick-register-types'
1176afterwards if you do not use customize to change this.)
2f940384 1177
7afbaca4 1178*** The new variable `imagemagick-enabled-types' also affects which
60b5f187
GM
1179ImageMagick types are treated as images. The function
1180`imagemagick-filter-types' returns the list of types that will be
1181treated as images.
c505aaeb 1182
f3f9606c
LMI
1183*** ImageMagick images now support the :max-width and :max-height
1184keywords.
1185
8259030d 1186*** Some data types aren't auto-detected by ImageMagick. Adding
c6b7ccaa
LMI
1187:format to `create-image' may help if the content type is in the
1188new variable `image-format-suffixes'.
8259030d 1189
6bc66c10
GM
1190** Minibuffer
1191
1192*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
1193next and previous path separator, respectively.
c505aaeb 1194
6bc66c10
GM
1195*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
1196in minibuffer prompts. Just set `minibuffer-eldef-shorten-default'
1197non-nil before enabling the mode.
1198
1199** Mode line
1200
1201*** New option `mode-line-default-help-echo' specifies the help text
1202(shown in a tooltip or in the echo area) for any part of the mode line
1203that does not have its own specialized help text.
1204
1205*** You can now click mouse-3 in the coding system indicator to invoke
1206`set-buffer-file-coding-system'.
1207
1208** Server and client
2f940384 1209
f938eda9
CY
1210*** emacsclient now obeys string values for `initial-buffer-choice',
1211if it is told to open a new frame without specifying any file to visit
1212or expression to evaluate.
db80bdc8 1213
f938eda9 1214*** New option `server-auth-key' specifies a shared server key.
f938eda9
CY
1215
1216** Emacs now generates backtraces on fatal errors.
1217On encountering a fatal error, Emacs now outputs a textual description
1218of the fatal signal, and a short backtrace on platforms like glibc
5248293f 1219that support backtraces.
2e2d2a13 1220
6bc66c10
GM
1221** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
1222This minor mode replaces `toggle-read-only', which is now obsolete.
1223
1224** Most `y-or-n' prompts now allow you to scroll the selected window.
1225Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
1226respectively, without exiting from the prompt.
1227
1228** In the Package Menu, newly-available packages are listed as "new",
1229and sorted above the other "available" packages by default.
1230
f938eda9
CY
1231** If your Emacs was built from a bzr checkout, the new variable
1232`emacs-bzr-version' contains information about the bzr revision used.
de6ff46d 1233
6bc66c10 1234** New option `create-lockfiles' specifies usage of lockfiles.
f938eda9
CY
1235It defaults to t. Changing it to nil inhibits the creation of lock
1236files (use this with caution).
dc0f75c8 1237
6bc66c10
GM
1238** New option `enable-remote-dir-locals', if non-nil, allows directory-local
1239variables on remote hosts.
21ffb35a 1240
f85f636a
CY
1241** The entry for PCL-CVS has been removed from the Tools menu.
1242The PCL-CVS commands are still available via the keyboard.
1243
6bc66c10
GM
1244** Using "unibyte: t" in Lisp source files is obsolete.
1245Use "coding: raw-text" instead.
1246
e78e7e48
CY
1247** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
1248has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
1249The previous binding, introduced in Emacs 24.1, was a mistake, because
1250`C-c LETTER' bindings are reserved for user customizations.
1251
6bc66c10 1252** Internationalization
2f940384 1253
f938eda9 1254*** New language environment: Persian.
2f940384 1255
f938eda9
CY
1256*** New input method `vietnamese-vni'.
1257
6bc66c10 1258** Nextstep (GNUstep / Mac OS X) port
2f940384 1259
823b2fb6 1260*** Support for fullscreen and the frame parameter fullscreen.
2f940384 1261
1a9c6830
GM
1262*** A file dialog is used for open/save operations initiated from the
1263menu/toolbar.
1264
a1ed8b05 1265\f
2a1e2476 1266* Editing Changes in Emacs 24.3
c25df26e 1267
6bc66c10 1268** Search and Replace
d39d3c8e 1269
f938eda9
CY
1270*** Non-regexp Isearch now performs "lax" space matching.
1271Each sequence of spaces in the supplied search string may match any
1272sequence of one or more whitespace characters, as specified by the
1273variable `search-whitespace-regexp'. (This variable is also used by a
823b2fb6 1274similar existing feature for regexp Isearch.)
2f940384 1275
f938eda9
CY
1276*** New Isearch command `M-s SPC' toggles lax space matching.
1277This applies to both ordinary and regexp Isearch.
2f940384 1278
f938eda9
CY
1279*** New option `replace-lax-whitespace'.
1280If non-nil, `query-replace' uses flexible whitespace matching too.
1281The default is nil.
2f940384 1282
b9cb2387
JL
1283*** Global `M-s _' starts a symbol (identifier) incremental search,
1284and `M-s _' in Isearch toggles symbol search mode.
1285`M-s c' in Isearch toggles search case-sensitivity.
1286
6bc66c10 1287** Navigation commands
48de8b12 1288
6bc66c10
GM
1289*** New binding `M-g c' for `goto-char'.
1290
1291*** New binding `M-g TAB' for `move-to-column'.
1292
1293*** `M-g TAB' (`move-to-column') prompts for a column number if called
1294interactively with no prefix arg. Previously, it moved to column 1.
1295
1296** New option `yank-handled-properties' allows processing of text
1297properties on yanked text, in ways that are more general than just
1298removing them (as is done by `yank-excluded-properties').
48de8b12 1299
48de8b12
CY
1300** New option `delete-trailing-lines' specifies whether
1301M-x delete-trailing-whitespace should delete trailing lines at the end
1302of the buffer. It defaults to t.
1303
f938eda9 1304** `C-u M-=' now counts lines/words/characters in the entire buffer.
826b3235 1305
48de8b12
CY
1306** `C-x 8 RET' is now bound to `insert-char', which is now a command.
1307`ucs-insert' is now an obsolete alias for `insert-char'.
b2459884 1308
48de8b12
CY
1309** The `z' key no longer has a binding in most special modes.
1310It used to be bound to `kill-this-buffer', but `z' is too easy to
1311accidentally type.
f938eda9 1312
6bc66c10
GM
1313** New command `C-x r M-w' (`copy-rectangle-as-kill').
1314It copies the region-rectangle as the last rectangle kill.
f938eda9 1315
6bc66c10 1316** Registers
f938eda9 1317
823b2fb6 1318*** `C-x r +' is now overloaded to invoke `append-to-register'.
f938eda9 1319
f938eda9 1320*** New option `register-separator' specifies the register containing
823b2fb6
GM
1321the text to put between collected texts for use with
1322M-x append-to-register and M-x prepend-to-register.
f1f4dba0 1323
a1ed8b05 1324\f
2a1e2476 1325* Changes in Specialized Modes and Packages in Emacs 24.3
ae4969c2 1326
6bc66c10 1327** Common Lisp emulation (CL)
f938eda9 1328
89660017 1329*** CL's main entry is now (require 'cl-lib).
823b2fb6
GM
1330`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
1331i.e., all its definitions have the "cl-" prefix (and internal definitions
1332use the "cl--" prefix).
7c1898a7 1333
823b2fb6
GM
1334If `cl' provided a feature under the name `foo', then `cl-lib'
1335provides it under the name `cl-foo' instead; with the exceptions of the
1336few `cl' definitions that had to use `foo*' to avoid conflicts with
1337pre-existing Elisp entities. These have been renamed to `cl-foo'
1338rather than `cl-foo*'.
7c1898a7 1339
92246540 1340The old `cl' is now deprecated and is mainly just a bunch of aliases that
823b2fb6 1341provide the old, non-prefixed names. Some exceptions are listed below:
7c1898a7 1342
89660017
SM
1343*** `cl-flet' is not like `flet' (which is deprecated).
1344Instead it obeys the behavior of Common-Lisp's `flet'.
e8693c96
GM
1345In particular, in cl-flet function definitions are lexically scoped,
1346whereas in flet the scoping is dynamic.
89660017
SM
1347
1348*** `cl-labels' is slightly different from `labels'.
823b2fb6
GM
1349The difference is that it relies on the `lexical-binding' machinery
1350(as opposed to the `lexical-let' machinery used previously) to capture
1351definitions in closures, so such closures will only work if `lexical-binding'
1352is in use.
89660017 1353
f94b04fc 1354*** `cl-letf' is not exactly like `letf'.
4ddedf94
GM
1355The only difference is in details that relate to some deprecated usage
1356of `symbol-function' in place forms.
f94b04fc 1357
89660017 1358*** `progv' was rewritten to use the `let' machinery.
823b2fb6
GM
1359A side effect is that variables without corresponding values are bound
1360to nil rather than being made unbound.
89660017 1361
9512f820
GM
1362*** The following methods of extending `setf' are obsolete
1363(use features from gv.el instead):
1364`define-modify-macro' (use `gv-letplace')
031b2ea7
GM
1365`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
1366`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
2b4da3ff 1367`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
f94b04fc 1368
6bc66c10 1369** Diff mode
f938eda9 1370
6bc66c10
GM
1371*** Changes are now highlighted using the same color scheme as in
1372modern VCSes. Deletions are displayed in red (new faces
1373`diff-refine-removed' and `smerge-refined-removed', and new definition
1374of `diff-removed'), insertions in green (new faces `diff-refine-added'
1375and `smerge-refined-added', and new definition of `diff-added').
f938eda9 1376
6bc66c10
GM
1377*** The variable `diff-use-changed-face' defines whether to use the
1378face `diff-changed', or `diff-removed' and `diff-added' to highlight
1379changes in context diffs.
2f940384 1380
6bc66c10
GM
1381*** The new command `diff-delete-trailing-whitespace' removes trailing
1382whitespace introduced by a diff.
f938eda9 1383
6bc66c10
GM
1384** Ediff now uses the same color scheme as Diff mode.
1385
1386** Python mode
1387
1388A new version of python.el, which provides several new features, including:
1389per-buffer shells, better indentation, Python 3 support, and improved
1390shell-interaction compatible with iPython (and virtually any other
1391text based shell).
1392
1393*** Some user options have been replaced/renamed, including (old -> new):
1394**** python-indent -> python-indent-offset
1395**** python-guess-indent -> python-indent-guess-indent-offset
1396**** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
1397**** python-use-skeletons -> python-skeleton-autoinsert
1398
1399*** Some user options have been removed, including:
1400
1401**** `python-indent-string-contents': Strings are never indented.
1402
1403**** `python-honour-comment-indentation':
d5b1b1aa 1404Comments are always considered as indentation markers.
6bc66c10
GM
1405
1406**** `python-continuation-offset': Indentation is automatically
1407calculated in a pep8 compliant way depending on the context.
1408
1409**** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
1410Have no direct mapping as the shell interaction is completely different.
1411
1412**** `python-python-command', `python-jython-command':
1413Replaced by `python-shell-interpreter'.
1414
1415**** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
1416`python-pdbtrack-minor-mode-string', `python-source-modes':
1417No longer relevant.
1418
1419*** Some commands have been replaced (old -> new):
1420**** python-insert-class -> python-skeleton-class
1421**** python-insert-def -> python-skeleton-def
1422**** python-insert-for -> python-skeleton-for
1423**** python-insert-if -> python-skeleton-if
1424**** python-insert-try/except -> python-skeleton-try
1425**** python-insert-try/finally -> python-skeleton-try
1426**** python-insert-while -> python-skeleton-while
1427**** python-find-function -> python-nav-jump-to-defun
1428**** python-next-statement -> python-nav-forward-sentence
1429**** python-previous-statement -> python-nav-backward-sentence
1430**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
1431**** python-end-of-defun-function -> python-nav-end-of-defun
1432**** python-send-buffer -> python-shell-send-buffer
1433**** python-send-defun -> python-shell-send-defun
1434**** python-send-region -> python-shell-send-region
1435**** python-send-region-and-go -> emulate with python-shell-send-region
1436and python-shell-switch-to-shell
1437**** python-send-string -> python-shell-send-string
1438**** python-switch-to-python -> python-shell-switch-to-shell
1439**** python-describe-symbol -> python-eldoc-at-point
e76f0800 1440
f938eda9
CY
1441** D-Bus
1442
f938eda9
CY
1443*** New variables `dbus-compiled-version' and `dbus-runtime-version'.
1444
f938eda9
CY
1445*** The D-Bus object manager interface is implemented.
1446
f938eda9
CY
1447*** Variables of type :(u)int32 and :(u)int64 accept floating points,
1448if their value does not fit into Emacs's integer range.
1449
823b2fb6
GM
1450*** The function `dbus-call-method' is now non-blocking.
1451It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
f938eda9 1452
823b2fb6 1453*** Signals can also be sent as unicast messages.
f938eda9 1454
f938eda9 1455*** The argument list of `dbus-register-signal' has been extended,
6bc66c10 1456according to the new match rule types of D-Bus.
f938eda9 1457
f938eda9
CY
1458*** `dbus-init-bus' supports private connections.
1459
f938eda9
CY
1460*** There is a new function `dbus-setenv'.
1461
6bc66c10
GM
1462** `desktop-path' no longer includes the "." directory.
1463Desktop files are now located in ~/.emacs.d by default.
f938eda9
CY
1464
1465** Dired
2f940384 1466
f938eda9
CY
1467*** `dired-do-async-shell-command' executes each file sequentially
1468if the command ends in `;' (when operating on multiple files).
1469Otherwise, it executes the command on each file in parallel.
2f940384 1470
823b2fb6
GM
1471*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
1472`dired-do-chown', and `dired-do-touch' yanks the attributes of the
f938eda9 1473file at point.
2f940384 1474
f938eda9 1475*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
823b2fb6 1476`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
f938eda9 1477mark/unmark/flag all files in the active region.
2f940384 1478
88c45e34 1479*** The minibuffer default for `=' (`dired-diff') has changed.
f938eda9
CY
1480It is now the backup file for the file at point, if one exists.
1481In Transient Mark mode the default is the file at the active mark.
2f940384 1482
f938eda9
CY
1483*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
1484The global binding for `M-=', `count-words-region' is in effect.
1485
02969baf
GM
1486** ERC
1487
6e5e9b70
GM
1488*** New module "notifications", which can send a notification when you
1489receive a private message or your nickname is mentioned.
02969baf
GM
1490
1491*** ERC will look up server/channel names via auth-source and use any
1492channel keys found.
f938eda9 1493
274f5de6
GM
1494*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
1495only applies to messages sent by lurkers.
f925b109 1496
6bc66c10 1497** reStructuredText mode
f938eda9 1498
6bc66c10
GM
1499*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
1500fontification, comment handling, and customization have all been revised
1501and improved.
f938eda9 1502
6bc66c10 1503*** Support for `imenu' and `which-function-mode'.
f938eda9 1504
6bc66c10
GM
1505*** The reStructuredText syntax is more closely covered.
1506Sphinx support has been improved.
f938eda9 1507
6bc66c10 1508*** `rst-insert-list' inserts new list or continues existing lists.
f938eda9 1509
6bc66c10 1510*** A negative prefix argument always works for `rst-adjust'.
f938eda9 1511
6bc66c10 1512*** The window configuration is reset after displaying a TOC.
bc7be45d 1513
6bc66c10 1514*** The constant `rst-version' describes the rst.el package version.
358c19d9 1515
dba3cda3
GM
1516** Ruby mode
1517
1518*** Support for percent literals and recognition of regular expressions
1519in method calls without parentheses with more methods, including Cucumber
1520steps definitions.
1521
1522*** Improved syntax highlighting and indentation.
1523
1524*** New command `ruby-toggle-block', bound to `C-c {'.
1525
1526*** Some non-standard keybindings/commands have been removed:
1527
1528**** `ruby-electric-brace'; use `electric-indent-mode' instead.
1529
1530**** `ruby-mark-defun'; use `mark-defun'.
1531
1532**** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
1533appropriate settings for the variables `beginning-of-defun-function'
1534and `end-of-defun-function'.
1535
1536**** Non-standard keybindings for `backward-kill-word', `comment-region',
1537`reindent-then-newline-and-indent' and `newline' have been removed.
1538
6bc66c10 1539** Shell Script mode
40d8bcb8 1540
6bc66c10 1541*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
40d8bcb8 1542
6bc66c10 1543*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
40d8bcb8 1544
6bc66c10 1545*** `sh-use-smie' lets you choose a new indentation and navigation code.
40d8bcb8 1546
6bc66c10 1547** VHDL mode
40d8bcb8 1548
6bc66c10 1549*** The free software compiler GHDL is supported (and now the default).
40d8bcb8 1550
6bc66c10 1551*** Support for the VHDL-AMS packages has been added/updated.
40d8bcb8 1552
6bc66c10 1553*** Updated to the 2002 revision of the VHDL standard.
40d8bcb8 1554
6bc66c10 1555*** Accepts \r and \f as whitespace.
40d8bcb8 1556
6bc66c10 1557** Apropos
40d8bcb8 1558
6bc66c10
GM
1559*** The faces used by Apropos are now directly customizable.
1560These faces are named `apropos-symbol', `apropos-keybinding', and so on;
1561see the `apropos' Custom group for details.
d13c8be6 1562
6bc66c10
GM
1563*** The old options whose values specified faces to use have been removed
1564(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
d13c8be6 1565
6bc66c10 1566** Buffer Menu
d13c8be6 1567
6bc66c10 1568*** This package has been rewritten to use Tabulated List mode.
d13c8be6 1569
6bc66c10
GM
1570*** Option `Buffer-menu-buffer+size-width' is now obsolete.
1571Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
d13c8be6 1572
86e100a6
GM
1573** Calc
1574
1575*** Algebraic simplification mode is now the default.
1576To restrict to the limited simplifications given by the former
1577default simplification mode, use `m I'.
1578
6bc66c10 1579** Calendar
d13c8be6 1580
6bc66c10
GM
1581*** You can customize the header text that appears above each calendar month.
1582See the variable `calendar-month-header'.
d13c8be6 1583
6bc66c10 1584*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
ee97deee 1585
6bc66c10
GM
1586*** The calendars produced by cal-html include holidays.
1587Customize `cal-html-holidays' to change this.
8b0823d6 1588
0058cae2
GM
1589** CEDET
1590
1591*** The major modes from the parser generators "Bovine" and "Wisent"
1592are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
1593are in `auto-mode-alist', and the corresponding manuals are included.
1594
1595*** EDE
1596
1597**** Menu support for the "Configuration" feature. This allows users to
1598choose the active configuration (such as debug or install) from the menu.
1599
1600**** New command `ede-set' to interactively set project-local variables.
1601
1602**** Support for compiling, debugging, and running in "generic" projects.
1603
1604**** Autoconf editing support for M4 macros with complex arguments.
1605
1606**** Compilation support for the "linux" project type.
1607
1608**** "simple" projects have been removed; use "generic" projects instead.
1609
1610*** Semantic
1611
1612**** Support for parsing #include statements inside a namespace in C/C++.
1613
1614**** Improved support for 'extern "C"' declarations in C/C++.
1615
1616**** The ability to ignore more common special C/C++ preprocessor symbols,
1617such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
1618If available, include cdefs.h as an additional source of preprocessor symbols.
1619
1620**** Improved C/C++ function pointer parsing.
1621
1622**** In Python, support for converting imports to include file names.
1623
1624**** Ability to dynamically determine the Python load path.
1625
1626**** Support for the Python 'WITH' and 'AT' keywords.
1627
1628**** Improved tooltip completion.
1629
1630*** SRecode
1631
1632**** The SRecode manual is now included.
1633
1634**** Tag generation supports constructor/destructor settings and system
1635include differentiation.
1636
1637**** Addition of 'Framework' support: Frameworks are specified when a
1638particular kind of library (such as Android) is needed in a common language
1639mode (like Java).
1640
1641**** Support for nested templates and let variables override based on priority.
1642
1643**** Support for merging tables from multiple related modes, such as
1644default -> c++ -> arduino.
1645
6bc66c10 1646** Compile has a new option `compilation-always-kill'.
42917e79 1647
6bc66c10 1648** Customize
35d98877 1649
6bc66c10 1650*** `custom-reset-button-menu' now defaults to t.
35d98877 1651
6bc66c10
GM
1652*** Non-option variables are never matched in `customize-apropos' and
1653`customize-apropos-options' (i.e., the prefix argument does nothing for
1654these commands now).
782fbf2a 1655
f938eda9 1656** Term
782fbf2a 1657
823b2fb6
GM
1658*** The variables `term-default-fg-color' and `term-default-bg-color'
1659are now deprecated in favor of the customizable face `term'.
fc72b15c 1660
02969baf
GM
1661*** You can customize how to display ANSI terminal colors and styles
1662by customizing the corresponding `term-color-<COLOR>',
1663`term-color-underline' and `term-color-bold' faces.
cf20dee0 1664
05ecb497 1665** Tramp
2f940384 1666
02969baf 1667*** The syntax has been extended in order to allow ad-hoc proxy definitions.
05ecb497 1668
823b2fb6 1669*** Remote processes are now also supported on remote MS-Windows hosts.
05ecb497 1670
ce7b18ec 1671** URL
2f940384 1672
ce7b18ec
CY
1673*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
1674Previously, this slot stored semicolon-separated attribute-value pairs
1675appended to some imap URLs, but this is not compatible with RFC 3986.
823b2fb6 1676So now the `filename' slot stores the entire path and query components,
ce7b18ec 1677and the `attributes' slot is always nil.
2f940384 1678
ce7b18ec
CY
1679*** New function `url-encode-url' for encoding a URI string.
1680The `url-retrieve' function now uses this to encode its URL argument,
1681in case that is not properly encoded.
1682
843571cb
LMI
1683*** New command `url-cookie-list' displays all the current cookies, and
1684allows deleting selected cookies.
1685
6bc66c10
GM
1686** notifications.el supports now version 1.2 of the Notifications API.
1687The function `notifications-get-capabilities' returns the supported
1688server properties.
f938eda9 1689
6bc66c10
GM
1690** Flymake uses fringe bitmaps to indicate errors and warnings.
1691See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
1692`flymake-warning-bitmap'.
f938eda9 1693
6bc66c10
GM
1694** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
1695specifying URL types that should be converted to remote file names at
1696the FFAP prompt. The default is now '("ftp").
f938eda9 1697
6bc66c10
GM
1698** New Ibuffer `derived-mode' filter, bound to `/ M'.
1699The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
f938eda9 1700
6bc66c10
GM
1701** New option `mouse-avoidance-banish-position' specifies where the
1702`banish' mouse avoidance setting moves the mouse.
ce7b18ec 1703
6bc66c10
GM
1704** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
1705closing brackets to be aligned with the line of the opening bracket.
f938eda9 1706
6bc66c10 1707** In Proced mode, new command `proced-renice' renices marked processes.
f938eda9 1708
6bc66c10
GM
1709** New option `async-shell-command-buffer' specifies the buffer to use
1710for a new asynchronous `shell-command' when the default output buffer
1711`*Async Shell Command*' is already in use.
f938eda9 1712
6bc66c10
GM
1713** SQL mode has a new option `sql-db2-escape-newlines'.
1714If non-nil, newlines sent to the command interpreter will be escaped
1715by a backslash. The default does not escape the newlines and assumes
1716that the sql statement will be terminated by a semicolon.
f938eda9 1717
6bc66c10
GM
1718** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
1719(and modes that derive from it), sorts the column at point, or the Nth
1720column if a numeric prefix argument is given.
f938eda9 1721
02969baf 1722** `which-func-modes' now defaults to t, so Which Function mode, when
05b621a6 1723enabled, applies to all applicable major modes.
f938eda9 1724
6bc66c10 1725** `winner-mode-hook' now runs when the mode is disabled, as well as when
823b2fb6 1726it is enabled.
f938eda9 1727
6bc66c10
GM
1728** Follow mode no longer works by using advice.
1729The option `follow-intercept-processes' has been removed.
1730
1731** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
f938eda9 1732
d1069532
SM
1733** Hooks renamed to avoid obsolete "-hooks" suffix:
1734*** semantic-lex-reset-hooks -> semantic-lex-reset-functions
1735*** semantic-change-hooks -> semantic-change-functions
1736*** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
1737*** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
1738*** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
1739*** semanticdb-save-database-hooks -> semanticdb-save-database-functions
1740*** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
1741*** rcirc-sentinel-hooks -> rcirc-sentinel-functions
1742*** rcirc-receive-message-hooks -> rcirc-receive-message-functions
1743*** rcirc-activity-hooks -> rcirc-activity-functions
1744*** rcirc-print-hooks -> rcirc-print-functions
1745*** dbus-event-error-hooks -> dbus-event-error-functions
1746*** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
1747*** checkdoc-style-hooks -> checkdoc-style-functions
1748*** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
1749*** archive-extract-hooks -> archive-extract-hook
1750*** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
1751*** hfy-post-html-hooks -> hfy-post-html-hook
1752*** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
1753*** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
1754*** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
1755*** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
f938eda9 1756
6bc66c10 1757** Obsolete packages
2f940384 1758
797e6e88
SM
1759*** assoc.el
1760In most cases, assoc+member+push+delq work just as well.
1761And in any case it's just a terrible package: ugly semantics, terrible
1762inefficiency, and not namespace-clean.
3c74813a 1763*** bruce.el
b4617547 1764*** cust-print.el
daed4003 1765*** ledit.el
82f289a4 1766*** mailpost.el
d57de7fe 1767*** mouse-sel.el
3c74813a 1768*** patcomp.el
1a9c6830 1769
a1ed8b05 1770\f
2a1e2476 1771* Incompatible Lisp Changes in Emacs 24.3
b4d3bc10 1772
6bc66c10
GM
1773** Docstrings starting with `*' no longer indicate user options.
1774Only variables defined using `defcustom' are considered user options.
1775The function `user-variable-p' is now an obsolete alias for
1776`custom-variable-p'.
090cf9db 1777
6bc66c10
GM
1778** The return values of `defalias', `defun' and `defmacro' have changed,
1779and are now undefined. For backwards compatibility, `defun' and
1780`defmacro' currently return the name of the newly defined
1781function/macro, but this should not be relied upon.
090cf9db 1782
823b2fb6
GM
1783** `random' by default now returns a different random sequence in
1784every Emacs run. Use `(random S)', where S is a string, to set the
0e23ef9d
PE
1785random seed to a value based on S, in order to get a repeatable
1786sequence in later calls.
1787
d32e47af
LM
1788** If the NEWTEXT arg to `replace-match' contains a substring "\?",
1789that substring is inserted literally even if the LITERAL arg is
1790non-nil, instead of causing an error to be signaled.
1791
2cec368c
MR
1792** `select-window' now always makes the window's buffer current.
1793It does so even if the window was selected before.
1794
6bc66c10
GM
1795** The function `x-select-font' can return a font spec, instead of a
1796font name as a string. Whether it returns a font spec or a font name
1797depends on the graphical library.
bbf908bc 1798
eeddc531
CY
1799** `face-spec-set' no longer sets frame-specific attributes when the
1800third argument is a frame (that usage was obsolete since Emacs 22.2).
1801
6bc66c10 1802** `set-buffer-multibyte' now signals an error in narrowed buffers.
a59d531e 1803
ab7f1c43
GM
1804** The CL package's `get-setf-method' function no longer exists.
1805Generalized variables are now part of core Emacs Lisp, and implemented
1806differently to the way cl.el used to do it. It is not possible to
1807define a compatible replacement for `get-setf-method'. See the file
1808gv.el for internal details of the new implementation.
1809
6bc66c10
GM
1810** The arguments of `dbus-register-signal' are no longer just strings,
1811but keywords or keyword-string pairs. The old argument list will
1812still be supported for Emacs 24.x.
72b255c7 1813
6bc66c10 1814** Miscellaneous name changes
823b2fb6
GM
1815Some Lisp symbols have been renamed to correct their spelling,
1816or to be more consistent with standard Emacs terminology.
72b255c7 1817
72b255c7 1818*** Renamed functions
72b255c7
PE
1819**** hangul-input-method-inactivate -> hangul-input-method-deactivate
1820**** inactivate-input-method -> deactivate-input-method
1821**** quail-inactivate -> quail-deactivate
1822**** robin-inactivate -> robin-deactivate
1823**** viper-inactivate-input-method -> viper-deactivate-input-method
1824**** viper-inactivate-input-method-action ->
1825 viper-deactivate-input-method-action
1826**** ucs-input-inactivate -> ucs-input-deactivate
1827
1828*** Renamed hooks
1829The old hooks are still supported for backward compatibility, but they
1830are deprecated and will be removed eventually.
72b255c7
PE
1831**** input-method-inactivate-hook -> input-method-deactivate-hook
1832**** robin-inactivate-hook -> robin-deactivate-hook
1833**** quail-inactivate-hook -> quail-deactivate-hook
1834
6bc66c10 1835*** Renamed variables
72b255c7
PE
1836**** follow-deactive-menu -> follow-inactive-menu
1837**** inactivate-current-input-method-function ->
1838 deactivate-current-input-method-function
1839
02969baf
GM
1840** Some obsolete functions, variables, and faces have been removed:
1841*** `last-input-char', `last-command-char', `unread-command-char'
78f3273a
CY
1842*** `facemenu-unlisted-faces'
1843*** `rmail-decode-mime-charset'
a5f2b6ec
CY
1844*** `iswitchb-read-buffer'
1845*** `sc-version', `sc-submit-bug-report'
1846*** `set-char-table-default'
02969baf 1847*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
a5f2b6ec 1848*** `compile-internal'
02969baf 1849*** `modeline'
59f7af81 1850*** `mode-line-inverse-video'
02969baf 1851*** `follow-mode-off-hook'
a5f2b6ec 1852*** `cvs-commit-buffer-require-final-newline'
63820c5c 1853(use `log-edit-require-final-newline' instead)
a5f2b6ec
CY
1854*** `cvs-changelog-full-paragraphs'
1855(use `log-edit-changelog-full-paragraphs' instead)
1856*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
1857*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
1858*** `vc-master-templates' (use `vc-handled-backends' instead)
1859*** `vc-checkout-carefully'
78f3273a 1860
a1ed8b05 1861\f
93e0bed6 1862* Lisp Changes in Emacs 24.3
ef24141c 1863
2ee3d7f0 1864** CL-style generalized variables are now in core Elisp.
f938eda9 1865`setf' is autoloaded; `push' and `pop' accept generalized variables.
ebdbfb95
GM
1866You can define your own generalized variables using `gv-define-simple-setter',
1867`gv-define-setter', etc.
2ee3d7f0 1868
6bc66c10
GM
1869** Emacs tries to macroexpand interpreted (non-compiled) files during load.
1870This can significantly speed up execution of non-byte-compiled code,
1871but can also bump into previously unnoticed cyclic dependencies.
1872These are generally harmless: they will simply cause the macro calls
1873to be left for later expansion (as before), but will result in a
1874warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
1875You may wish to restructure your code so this does not happen.
1876
1877** New sampling-based Elisp profiler.
1878Try M-x profiler-start, do some work, and then call M-x profiler-report.
1879When finished, use M-x profiler-stop. The sampling rate can be based on
1880CPU time or memory allocations.
1881
500fcedc
SM
1882** `defun' also accepts a (declare DECLS) form, like `defmacro'.
1883The interpretation of the DECLS is determined by `defun-declarations-alist'.
1884
6bc66c10
GM
1885** New macros `setq-local' and `defvar-local'.
1886
1887** Face underlining can now use a wave.
2f940384 1888
6bc66c10 1889** `read-regexp' has a new argument HISTORY; the first argument PROMPT
cd996018 1890of `read-regexp' accepts a string ending with a colon and space, and its
823b2fb6 1891second argument DEFAULTS can be a list of strings accessible via `M-n'
cd996018
CY
1892in the minibuffer ahead of other hard-coded useful regexp-related values.
1893More commands use `read-regexp' now to read their regexp arguments.
1894
f938eda9 1895** Completion
500fcedc 1896
f938eda9
CY
1897*** New function `completion-table-with-quoting' to handle completion
1898in the presence of quoting, such as file completion in shell buffers.
f95e9344 1899
f938eda9
CY
1900*** New function `completion-table-subvert' to use an existing completion
1901table, but with a different prefix.
1902
6bc66c10 1903** Debugger
f95e9344 1904
f938eda9
CY
1905*** New error type and new function `user-error'.
1906These do not trigger the debugger.
f95e9344 1907
57fc0fee
GM
1908*** New option `debugger-bury-or-kill', saying what to do with the
1909debugger buffer when exiting debug.
45b82ad0
SM
1910
1911*** Set `debug-on-message' to enter the debugger when a certain
1912message is displayed in the echo area. This can be useful when trying
1913to work out which code is doing something.
2f940384 1914
45b82ad0
SM
1915*** New var `inhibit-debugger', automatically set to prevent accidental
1916recursive invocations.
fa2bcf43 1917
6bc66c10 1918** Window handling
2f940384 1919
6bc66c10
GM
1920*** New command `fit-frame-to-buffer' adjusts the frame height to
1921fit the contents.
2f940384 1922
6bc66c10
GM
1923*** The command `fit-window-to-buffer' can adjust the frame height
1924if the new option `fit-frame-to-buffer' is non-nil.
8e17c9ba 1925
7fe37cfc
GM
1926*** New macro `with-temp-buffer-window', similar to
1927`with-output-to-temp-buffer'.
fa2bcf43 1928
8e17c9ba
MR
1929*** `temp-buffer-resize-mode' no longer resizes windows that have been
1930reused.
c5e28e39 1931
823b2fb6 1932*** New option `switch-to-buffer-preserve-window-point' to restore a
43bcfda6 1933window's point when switching buffers.
7c82753d 1934
9139632a
JL
1935*** New display action function `display-buffer-no-window' to not
1936display the buffer in a window.
1937
1938*** New display action alist entry `allow-no-window' to indicate the
f0cfa5fe 1939caller of `display-buffer' is ready to handle the case of not
9139632a 1940displaying the buffer in a window.
f0cfa5fe 1941
6bc66c10
GM
1942*** New display action alist entries `window-height' and `window-width'
1943specify the size of new windows created by `display-buffer'.
1944
1945*** New display action alist entry `pop-up-frame-parameters', if
1946non-nil, specifies frame parameters to give any newly-created frame.
7c82753d 1947
fa2bcf43
MR
1948*** New display action alist entry `inhibit-switch-frame', if non-nil,
1949tells display action functions to avoid changing which frame is
1950selected.
2f940384 1951
fa2bcf43
MR
1952*** New display action alist entry `previous-window', if non-nil,
1953specifies window to reuse in `display-buffer-in-previous-window'.
2f940384 1954
6bc66c10
GM
1955*** New display action functions `display-buffer-below-selected',
1956and `display-buffer-in-previous-window'.
1957
1958*** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
1959now accept a third argument to avoid choosing the selected window.
1960
1961*** Additional values recognized for option `window-combination-limit'.
5938d519 1962
77f1f99c
CY
1963*** The following variables are obsolete, as they can be replaced by
1964appropriate entries in the `display-buffer-alist' function introduced
1965in Emacs 24.1:
823b2fb6 1966**** `dired-shrink-to-fit'
77f1f99c 1967**** `display-buffer-reuse-frames'
823b2fb6 1968**** `display-buffer-function'
77f1f99c 1969**** `special-display-buffer-names'
823b2fb6 1970**** `special-display-frame-alist'
77f1f99c 1971**** `special-display-function'
823b2fb6 1972**** `special-display-regexps'
77f1f99c 1973
ab0fa4e4 1974** Time
2f940384 1975
ab0fa4e4
PE
1976*** `current-time-string' no longer requires that its argument's year
1977must be in the range 1000..9999. It now works with any year supported
1978by the underlying C implementation.
2f940384 1979
f938eda9
CY
1980*** `current-time' now returns extended-format time stamps
1981(HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
1982PSEC is typically a multiple of 1000 on current machines. Other
823b2fb6
GM
1983functions that use this format, such as `file-attributes' and
1984`format-time-string', have been changed accordingly. Old-format time
f938eda9 1985stamps are still accepted.
2f940384 1986
823b2fb6 1987*** The format of timers in `timer-list' and `timer-idle-list' is now
f938eda9
CY
1988[TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
1989The PSECS slot is new, and uses picosecond resolution. It can be
823b2fb6 1990accessed via the new `timer--psecs' accessor.
2f940384 1991
c4132fd4
PE
1992*** Last-modified time stamps in undo lists now are of the form
1993(t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
1994
0058cae2
GM
1995** EIEIO
1996
1997*** Improved security when handling persistent objects:
1998
1999**** `eieio-persistent-read' now features optional arguments for specifying
2000the class to load, as well as a flag stating whether subclasses are allowed;
2001if provided, other classes will be rejected by the reader. For
2002compatibility with existing code, if the class is omitted only a
2003warning is issued.
2004
2005**** New specialized reader for pulling in classes and signaling errors
2006without evaluation of suspicious code.
2007
2008**** All slots that contain objects must have a :type. Slots with lists
2009of objects must use a new type predicate for a list of an object type.
2010
2011*** Support for `find-function' and similar utilities, through the addition
2012of filename support to generated symbols.
2013
f938eda9 2014** Floating point functions now always return special values like NaN,
823b2fb6 2015instead of signaling errors, if given invalid args; e.g., (log -1.0).
f938eda9
CY
2016Previously, they returned NaNs on some platforms but signaled errors
2017on others. The affected functions are acos, asin, tan, exp, expt,
2018log, log10, sqrt, and mod.
2019
6bc66c10 2020** New fringe bitmap `exclamation-mark'.
f938eda9 2021
6bc66c10
GM
2022** Miscellaneous changes to special forms and macros
2023
2024*** `defun' and `defmacro' are now macros rather than special forms.
2025
2026*** `kbd' is now a function rather than a macro.
2027
2028** Miscellaneous new functions
2029
2030*** `set-temporary-overlay-map' sets up a temporary keymap that
2031takes precedence over most other maps for a short while (normally one key).
f938eda9 2032
847a0561 2033*** `autoloadp' tests if its argument is an autoloaded object.
2f940384 2034
847a0561 2035*** `autoload-do-load' performs the autoloading operation.
2f940384 2036
f938eda9 2037*** `buffer-narrowed-p' tests if the buffer is narrowed.
2f940384 2038
f938eda9 2039*** `file-name-base' returns a file name sans directory and extension.
2f940384 2040
f938eda9 2041*** `function-get' fetches a function property, following aliases.
c990426a 2042
f938eda9 2043*** `posnp' tests if an object is a `posn'.
f938eda9 2044
f938eda9 2045*** `system-users' returns the user names on the system.
547d6865 2046
f938eda9 2047*** `system-groups' returns the group names on the system.
f938eda9 2048
f938eda9 2049*** `tty-top-frame' returns the topmost frame of a text terminal.
c990426a 2050
f938eda9 2051** The following functions and variables are obsolete:
847a0561 2052*** `automount-dir-prefix' (use `directory-abbrev-alist')
f938eda9 2053*** `buffer-has-markers-at'
1a9c6830 2054*** `macro-declaration-function' (use `macro-declarations-alist')
847a0561 2055*** `window-system-version' (provides no useful information)
93cacb6d 2056*** `dired-pop-to-buffer' (use `dired-mark-pop-up')
0e2ae83d 2057*** `query-replace-interactive'
49238e7f 2058*** `font-list-limit' (has had no effect since Emacs < 23)
86aa551c 2059
adce950d 2060\f
93e0bed6 2061* Changes in Emacs 24.3 on Non-Free Operating Systems
9078ead6 2062
4e98ad15 2063** Cygwin builds can use the native MS Windows user interface.
823b2fb6 2064Pass `--with-w32' to configure. The default remains the X11 interface.
53a63be6 2065
1a9c6830 2066** Two new functions are available in Cygwin builds:
6e9f7997
DC
2067`cygwin-convert-file-name-from-windows' and
2068`cygwin-convert-file-name-to-windows'. These functions allow Lisp
2069code to access the Cygwin file-name mapping machinery to convert
2070between Cygwin and Windows-native file and directory names.
de6e3a60 2071
4e98ad15 2072** When invoked with the -nw switch to run on the Windows text-mode terminal,
1ab0c851 2073Emacs now supports `mouse-highlight', help-echo (in the echo area), and
4e98ad15
GM
2074`mouse-autoselect-window'.
2075
1a9c6830 2076** On MS Windows Vista and later Emacs now supports symbolic links.
4e98ad15 2077
823b2fb6 2078** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
4e98ad15
GM
2079support for libxml2, even if its presence is detected.
2080
4e98ad15
GM
2081** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
2082
823b2fb6 2083** On Mac OS X, configure no longer automatically adds the Fink "/sw"
4e98ad15
GM
2084directories to the search path. You must add them yourself if you want them.
2085
2a1e2476
GM
2086\f
2087* Changes in Emacs 24.2
2088
5190da91 2089** This is mainly a bug-fix release.
6dad7178 2090
9078ead6 2091\f
eb199145 2092* Installation Changes in Emacs 24.1
09e18d03 2093
31fd3586
GM
2094** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
2095to configure. Note that other libraries used by Emacs, RSVG and GConf,
2096also depend on Gtk+. You can disable them with --without-rsvg and
2097--without-gconf.
338648ad 2098
31fd3586
GM
2099** Emacs can be compiled with GnuTLS support.
2100This happens by default if a suitably recent version of the library is
2101found at build time. To prevent this, use the configure option
2102`--without-gnutls'. See below for GnuTLS features.
338648ad 2103
31fd3586
GM
2104** Emacs can be compiled with SELinux support.
2105This happens by default if a suitably recent version of the library is
2106found at build time. To prevent this, use the configure option
2107`--without-selinux'. See below for SELinux features.
aded53ff 2108
31fd3586
GM
2109** Emacs can be compiled with ImageMagick support.
2110This happens by default if a suitably recent version of the library is
2111found at build time. To prevent this, use the configure option
2112`--without-imagemagick'. See below for ImageMagick features.
c1f10868 2113This feature is not available for the Nextstep or MS ports.
d9170db5 2114
043efd56
GM
2115** Emacs can be compiled with libxml2 support.
2116This happens by default if a suitably recent version of the library is
2117found at build time. To prevent this, use the configure option
2118`--without-xml2'. See below for libxml2 features.
2119
7d301ae6
CY
2120** By default, the installed Info and man pages are compressed.
2121You can disable this by configuring --without-compress-info.
2122
7d301ae6 2123** New configure option --with-wide-int.
81eafe29 2124With it, Emacs integers typically have 62 bits, even on 32-bit machines.
0a768890
PE
2125On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
2126to about 2 GiB.
81eafe29 2127
7d301ae6 2128** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
31fd3586
GM
2129These provide no new functionality, they just remove the need to edit
2130lib-src/Makefile by hand in order to use the associated features.
2131
7d301ae6 2132** New configure option --enable-use-lisp-union-type.
31fd3586
GM
2133This is only useful for Emacs developers to debug certain types of bugs.
2134This is not a new feature; only the configure flag is new.
041d709f
CY
2135
2136** The standalone programs digest-doc and sorted-doc are removed.
2137Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
2138
041d709f
CY
2139** The standalone program `fakemail' is removed.
2140If you need it, feedmail.el provides a superset of the functionality.
2141
0bfd685e 2142\f
eb199145 2143* Startup Changes in Emacs 24.1
4a263588 2144
198a7a97 2145** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
adbf62ff
GM
2146command line arguments, and the EMACS_UNIBYTE environment variable, no
2147longer have any effect. (They were declared obsolete in Emacs 23.)
198a7a97 2148
66b7b0fe 2149** New command line option `--no-site-lisp' removes site-lisp directories
1b5e5b0c
GM
2150from load-path. -Q now implies this. This option does not affect the
2151EMACSLOADPATH environment variable (and hence has no effect for
c8d59ba3 2152Nextstep builds).
66b7b0fe 2153
0bfd685e 2154\f
eb199145 2155* Changes in Emacs 24.1
7841339b 2156
a2a25d24 2157** Completion
fdeb32ec 2158
dfdb4cad
CY
2159*** Many packages now use the `completion-at-point' command,
2160rather than implementing separate completion commands.
2161
de0bde62 2162*** `completion-at-point' now handles tags and semantic completion.
dfdb4cad 2163
a2a25d24
SM
2164*** Completion in a non-minibuffer now tries to detect the end of completion
2165and pops down the *Completions* buffer accordingly.
dfdb4cad
CY
2166
2167*** New option `completion-cycle-threshold' allows completion cycling.
2168
2169*** New option `completion-category-overrides' for overriding the
2c719188 2170default completion style in certain circumstances.
dfdb4cad 2171
a2a25d24 2172*** New completion style `substring'.
dfdb4cad
CY
2173
2174*** Completion of buffer names uses `substring' completion by default.
2175
2176*** The option `widget-complete-field' has been removed.
620c53a6 2177
6870aaef 2178** Mail changes
dfdb4cad 2179
7d301ae6
CY
2180*** The first time you try sending mail, Emacs asks for a mail method.
2181This is implemented by a new default for `send-mail-function', which
2182is `sendmail-query-once'. This offers to use the smtpmail package, or
2183to use the old defaults relying on external mail facilities
2184(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
2185`mailclient-send-it' on Windows).
dfdb4cad 2186
e78e7e48
CY
2187*** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
2188transfers the report to your desktop's preferred mail client, if there
2189is one. This uses either the "xdg-email" utility, or Mac OS's "open"
2190command.
dfdb4cad 2191
7d301ae6
CY
2192*** See Changes in Specialized Modes and Packages for SMTPmail changes
2193and Mail mode changes
3f88cd72 2194
041d709f 2195** Emacs server and client changes
dfdb4cad 2196
7d301ae6 2197*** New option `server-port' specifies the port for TCP Emacs servers.
dfdb4cad 2198
041d709f 2199*** New emacsclient argument -q/--quiet suppresses some status messages.
dfdb4cad 2200
7d301ae6
CY
2201*** New emacsclient argument --frame-parameters specifies the frame
2202parameters of any newly-created graphical frame.
dfdb4cad
CY
2203
2204*** If emacsclient shuts down due to Emacs signaling an error,
2205its exit status is 1.
2206
041d709f
CY
2207*** New emacsclient argument --parent-id ID.
2208This opens a client frame in parent X window ID, via XEmbed, similar
2209to the --parent-id argument to Emacs.
2210
d0ce9f8c
MB
2211** Internationalization changes
2212
d0ce9f8c 2213*** Emacs now supports display and editing of bidirectional text.
7d301ae6
CY
2214Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
2215displayed in the correct visual order as expected by users of those
dfdb4cad
CY
2216scripts. The display reordering is a "full bidirectionality" class
2217implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
2218with no RTL text should look exactly the same as before.
f4b6ba46 2219
041d709f 2220**** New buffer-local variable `bidi-display-reordering'.
7d301ae6 2221To disable display reordering in a buffer, change this to nil.
d20e1419 2222
041d709f
CY
2223**** New buffer-local variable `bidi-paragraph-direction'.
2224If nil (the default), Emacs determines the base direction of each
dfdb4cad
CY
2225paragraph from its text, as specified by the UBA. Setting the value
2226to `right-to-left' or `left-to-right' forces a base direction on each
2227paragraph.
f4b6ba46 2228
7d301ae6
CY
2229Paragraphs with right-to-left base direction are displayed starting at
2230the right window edge.
f1816485 2231
dfdb4cad
CY
2232*** Enhanced support for characters with no glyphs in available fonts,
2233or, on text terminals, characters that cannot be encoded by the
2234terminal coding system. The new option `glyphless-char-display-control'
2235specifies how to display them: as a hexadecimal code in a box, a thin
22361-pixel space, an empty box, etc.
d0ce9f8c 2237
9702b7a1
GM
2238*** New input methods for Farsi and Bulgarian
2239(farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
041d709f 2240
939db9ac
CY
2241*** `nobreak-char-display' now also highlights Unicode hyphen chars
2242(U+2010 and U+2011).
2243
7d301ae6 2244*** New Hebrew translation of the Emacs Tutorial.
31fd3586
GM
2245Type `C-u C-h t' to choose it in case your language setup doesn't
2246automatically select it.
2247
7d301ae6
CY
2248** An Emacs Lisp package manager is now included.
2249This is a convenient way to download and install additional packages,
2250from a package repository at http://elpa.gnu.org.
dfdb4cad 2251
7d301ae6
CY
2252*** M-x list-packages shows a list of packages, which can be
2253selected for installation.
dfdb4cad 2254
7d301ae6 2255*** New command `describe-package', bound to `C-h P'.
dfdb4cad 2256
7d301ae6
CY
2257*** By default, all installed packages are loaded automatically when
2258Emacs starts up. To disable this, set `package-enable-at-startup' to
2259nil. To specify the packages to load, customize `package-load-list'.
16a91140 2260
dfdb4cad
CY
2261** Custom theme changes
2262
7d301ae6
CY
2263*** New command `M-x customize-themes', which provides a convenient
2264interface for enabling and disabling Custom themes.
dfdb4cad 2265
7d301ae6 2266*** New option `custom-theme-load-path' is the load path for themes.
dfdb4cad
CY
2267Emacs no longer looks for Custom themes in `load-path'. The default
2268value of `custom-theme-load-path' says to look for themes in
2269`custom-theme-directory', followed by a subdirectory of
2270`data-directory' named "themes/", which contains a small selection of
2271built-in Custom themes.
2272
7d301ae6
CY
2273*** New option `custom-safe-themes' records known-safe theme files.
2274If a theme is not in this list, Emacs queries before loading it, and
2275offers to save the theme to `custom-safe-themes' automatically. By
2276default, all themes included in Emacs are treated as safe.
b7d65a5f 2277
7d301ae6 2278** Improved GTK integration
dfdb4cad 2279
7d301ae6 2280*** GTK scroll-bars are now placed on the right by default.
dfdb4cad
CY
2281The function `set-scroll-bar-mode' can change this.
2282
7d301ae6 2283*** GTK tool bars can have just text, just images or images and text.
dfdb4cad
CY
2284Customize `tool-bar-style' to choose the style. On a Gnome desktop,
2285the default is taken from desktop settings.
2286
2287*** GTK tool bars can be placed on any edge of the frame.
7d301ae6
CY
2288The frame-parameter tool-bar-position controls this. It takes the
2289values top, left, right or bottom. The Options => Show/Hide menu has
2290entries for this.
dfdb4cad 2291
7d301ae6
CY
2292*** The default colors for selected text (the `region' face) are taken
2293from the GTK theme when Emacs is built with GTK.
dfdb4cad 2294
7d301ae6
CY
2295*** Emacs uses GTK tooltips by default if built with GTK.
2296You can disable this by changing `x-gtk-use-system-tooltips' to nil.
a5bee597 2297
dfdb4cad
CY
2298** Graphical interface changes
2299
2300*** On graphical displays, the mode-line no longer ends in dashes.
2301Also, the first dash (which does not indicate anything) is just
2302displayed as a space.
2303
2304*** `menu-bar-select-buffer-function' lets you choose another operation
2305instead of `switch-to-buffer' when selecting an item in the Buffers menu.
2306
2307*** Lucid menus and dialogs can display antialiased fonts if Emacs is
2308built with Xft. These fonts can be set via X resources, for example:
2309Emacs.pane.menubar.font: Courier-12
2310
7d301ae6 2311** Exiting changes
dfdb4cad 2312
7d301ae6 2313*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
dfdb4cad
CY
2314or if it receives a SIGINT signal in batch mode.
2315
7d301ae6
CY
2316*** `kill-emacs-hook' is now also run in batch mode.
2317Third-party code which adds to `kill-emacs-hook' should check if they
2318do the right thing in batch mode.
9c524fcb 2319
041d709f 2320** Scrolling changes
dfdb4cad 2321
041d709f 2322*** New scrolling commands `scroll-up-command' and `scroll-down-command'
0a19a6f8 2323(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
7d301ae6 2324of buffer at first key-press (instead they move to top/bottom of buffer)
550f41cd 2325when `scroll-error-top-bottom' is non-nil.
dfdb4cad
CY
2326
2327*** New option `scroll-error-top-bottom' (see above).
2328
041d709f 2329*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 2330scroll a line instead of full screen.
dfdb4cad 2331
041d709f 2332*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 2333define it as a scroll command affected by `scroll-preserve-screen-position'.
dfdb4cad 2334
041d709f 2335*** If you customize `scroll-conservatively' to a value greater than 100,
d0f69533
EZ
2336Emacs will never recenter point in the window when it scrolls due to
2337cursor motion commands or commands that move point (e.f., `M-g M-g').
2338Previously, you needed to use `most-positive-fixnum' as the value of
2339`scroll-conservatively' to achieve the same effect.
dfdb4cad 2340
7d301ae6 2341*** "Aggressive" scrolling now honors the scroll margins.
d0f69533
EZ
2342If you customize `scroll-up-aggressively' or
2343`scroll-down-aggressively' and move point off the window, Emacs now
2344scrolls the window so as to avoid positioning point inside the scroll
2345margin.
2346
7d301ae6
CY
2347** Basic SELinux support has been added.
2348This requires Emacs to be linked with libselinux at build time.
f1a5d776 2349
dfdb4cad
CY
2350*** Emacs preserves the SELinux file context when backing up.
2351Also, the function `copy-file' has an extra optional argument for
2352preserving SELinux context, and the return value of `backup-buffer'
2353now includes the SELinux context.
f0bf7c8e 2354
dfdb4cad 2355*** New functions `file-selinux-context' and `set-file-selinux-context'
7d301ae6 2356get and set the SELinux context of a file.
44198b6e 2357
7d301ae6 2358** Trash changes
dfdb4cad 2359
7d301ae6
CY
2360*** `delete-by-moving-to-trash' now only affects commands that specify
2361trashing. This avoids inadvertently trashing temporary files.
dfdb4cad 2362
7d301ae6
CY
2363*** Calling `delete-file' or `delete-directory' with a prefix argument
2364now forces true deletion, regardless of `delete-by-moving-to-trash'.
278f6845 2365
041d709f 2366** File- and directory-local variable changes
dfdb4cad 2367
041d709f
CY
2368*** You can stop directory local vars from applying to subdirectories.
2369Add an element (subdirs . nil) to the alist portion of any variables
2370settings to indicate that the section should not apply to
2371subdirectories.
dfdb4cad 2372
041d709f
CY
2373*** Directory local variables can apply to some file-less buffers.
2374Affected modes include dired, vc-dir, and log-edit. For example,
2375adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
2376turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
2377`hack-dir-local-variables-non-file-buffer' to support this.
dfdb4cad 2378
041d709f
CY
2379*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
2380Instead, use "eval: (minor-mode 1)".
c136e5cd 2381
7b447e9b
GM
2382*** The variable `inhibit-first-line-modes-regexps' has been renamed
2383to `inhibit-local-variables-regexps'. As the name suggests, it now
dfdb4cad
CY
2384applies to ALL file local variables, not just -*- lines. The
2385associated `inhibit-first-line-modes-suffixes' has been renamed in the
2386corresponding way.
5d907d6c 2387
0a2132ba
CY
2388** Window changes
2389
91b65361
CY
2390*** The `quit-window' command now restores the last buffer displayed
2391in the quitted window.
2392
0a2132ba
CY
2393*** Resizing an Emacs frame now preserves proportional window sizes,
2394modulo restrictions like window minimum sizes and fixed-size windows.
2395
2396*** The behavior of `display-buffer' is now customizable in detail.
dfdb4cad 2397
0a2132ba
CY
2398**** New option `display-buffer-base-action' specifies a list of
2399user-determined display "actions" (functions and optional arguments
2400for choosing the displaying window).
2401
2402This takes precedence over the default display action, which is
2403specified by `display-buffer-fallback-action'.
2404
2405**** New option `display-buffer-alist' maps buffer name regexps to
2406display actions, taking precedence over `display-buffer-base-action'.
2407
a0c2d0ae
MR
2408*** New option `window-combination-limit'.
2409The new option `window-combination-limit' allows to return the space
2410obtained for resizing or creating a window more reliably to the window
2411from which such space was obtained.
0a2132ba 2412
a0c2d0ae
MR
2413*** New option `window-combination-resize'.
2414The new option `window-combination-resize' allows to split a window that
2415otherwise cannot be split because it's too small by stealing space from
2416other windows in the same combination. Subsequent resizing or deletion
2417of the window will resize all windows in the same combination as well.
0a2132ba 2418
91b65361
CY
2419*** New option `frame-auto-hide-function' lets you choose between
2420iconifying or deleting a frame when burying a buffer in a dedicated
2421frame, or quitting a window showing a buffer in a frame of its own.
2422
0a2132ba 2423*** New commands `maximize-window' and `minimize-window'.
53964682 2424These maximize and minimize the size of a window within its frame.
0a2132ba 2425
0a2132ba
CY
2426*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
2427These functions allow to navigate through the live buffers that have
2428been shown in a specific window.
2429
7d301ae6 2430** Minibuffer changes
dfdb4cad 2431
7d301ae6 2432*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
104dc9c6
GM
2433This is handy for minibuffer-only frames, and is also used for the feature
2434where mouse-1 pops up *Messages*"', which can now easily be changed.
041d709f 2435
7d301ae6 2436*** Minibuffers set `truncate-lines' to nil.
f66eca26 2437If you want to change the value to something else, you could use
7d301ae6
CY
2438for example `minibuffer-setup-hook'.
2439
7d301ae6
CY
2440** `auto-mode-case-fold' is now enabled by default.
2441
7d301ae6 2442** `backup-by-copying-when-mismatch' now defaults to t.
f66eca26 2443
dfdb4cad
CY
2444** New basic faces `error', `warning', `success'.
2445These are used to highlight text indicating failure, caution or
2446successful operation.
2447
2448** New option `list-colors-sort' defines the color sort order
2449for `list-colors-display'.
2450
2451** The variable `focus-follows-mouse' now always defaults to nil.
2452
0bfd685e 2453\f
eb199145 2454* Editing Changes in Emacs 24.1
b350bdf2 2455
892777ba 2456** Search changes
dfdb4cad
CY
2457
2458*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
2459`isearch-yank-line'.
2460
2461*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
2462`isearch-yank-kill'.
2463
2464*** M-s C-e in Isearch is now bound to `isearch-yank-line'.
2465
b2b0776e 2466** New commands `count-words-region' and `count-words'.
dfdb4cad 2467
10607bea
CY
2468*** M-= is bound to `count-words-region', not `count-lines-region'.
2469The `count-words-region' command, when called interactively, reports
2470the number of lines, words, and characters in the region. It is a
2471superset of the old `count-lines-region', which is now an obsolete
2472alias for it.
ea4f7750 2473
ec9da840 2474** The command `just-one-space' (M-SPC), if given a negative argument,
1c708c1a
CY
2475also deletes newlines around point.
2476
b9229673 2477** Deletion changes
dfdb4cad 2478
b9229673 2479*** New option `delete-active-region'.
ddb54206 2480If non-nil, [delete] and DEL delete the region if it is active and no
dfdb4cad 2481prefix argument is given. If set to `kill', those commands kill
ddb54206 2482instead.
dfdb4cad 2483
59ee0542 2484*** New command `delete-forward-char', bound to [delete].
42d9cffa
CY
2485This is meant for interactive use, and obeys `delete-active-region'.
2486The command `delete-char' does not obey `delete-active-region'.
dfdb4cad 2487
b9229673
CY
2488*** `delete-backward-char' is now a Lisp function.
2489Apart from obeying `delete-active-region', its behavior is unchanged.
7d301ae6
CY
2490However, the byte compiler now warns if it is called from Lisp; Lisp
2491callers should use delete-char with a negative argument instead.
dfdb4cad 2492
b9229673
CY
2493*** The option `mouse-region-delete-keys' has been deleted.
2494
f9d71b42
CY
2495** Selection changes.
2496
7d301ae6
CY
2497The default handling of clipboard and primary selections has been
2498changed to conform with modern X applications. In short, most
2499commands for killing and yanking text now use the clipboard, while
2500mouse commands use the primary selection.
b1ab31ae
CY
2501
2502In the following, we provide a list of these changes, followed by a
2503list of steps to get the old behavior back if you prefer that.
2504
b1ab31ae
CY
2505*** `select-active-regions' now defaults to t.
2506Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 2507the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
2508the system possesses a separate primary selection facility (e.g. X).
2509
2510**** `select-active-regions' also accepts a new value, `only'.
2511This means to only set the primary selection for temporarily active
2512regions (usually made by mouse-dragging or shift-selection);
2513"ordinary" active regions, such as those made with C-SPC followed by
2514point motion, do not alter the primary selection.
2515
963578d3
CY
2516**** `mouse-drag-copy-region' now defaults to nil.
2517
b1ab31ae
CY
2518*** mouse-2 is now bound to `mouse-yank-primary'.
2519This pastes from the primary selection, ignoring the kill-ring.
2520Previously, mouse-2 was bound to `mouse-yank-at-click'.
dfdb4cad 2521
b1ab31ae 2522*** `x-select-enable-clipboard' now defaults to t on all platforms.
dfdb4cad 2523
b1ab31ae
CY
2524*** `x-select-enable-primary' now defaults to nil.
2525Thus, commands that kill text or copy it to the kill-ring (such as
2526M-w, C-w, and C-k) also use the clipboard---not the primary selection.
2527
2528**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
dfdb4cad 2529exactly equivalent to M-w, C-w, and C-y respectively.
b1ab31ae
CY
2530
2531**** Note that on MS-Windows, `x-select-enable-clipboard' was already
2532non-nil by default, as Windows does not support the primary selection
2533between applications.
2534
2535*** To return to the previous behavior, do the following:
dfdb4cad 2536
104c2fe9 2537**** Change `select-active-regions' to nil.
b1ab31ae
CY
2538**** Change `mouse-drag-copy-region' to t.
2539**** Change `x-select-enable-primary' to t (on X only).
2540**** Change `x-select-enable-clipboard' to nil.
2541**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 2542
084e6df3 2543*** Support for X cut buffers has been removed.
dfdb4cad 2544
3fd50d5c
CY
2545*** X clipboard managers are now supported.
2546To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 2547
dfdb4cad
CY
2548** New command `C-x r N' (`rectangle-number-lines') numbers the lines
2549in the current rectangle. With a prefix argument, this prompts for a
2550number to count from and for a format string.
99f053cf 2551
7d301ae6 2552** `redisplay-dont-pause' now defaults to t.
6bf7006f
EZ
2553This makes Emacs feel more responsive to editing commands that arrive
2554at high rate, e.g. if you lean on some key, because stopping redisplay
2555in the middle (when this variable is nil) forces more expensive
2556updates later on, and Emacs appears to be unable to keep up.
2557
e70b5064
CY
2558** The behavior of <TAB> for active regions in Text mode has changed.
2559In Text and related modes, typing <TAB> (`indent-for-tab-command')
2560when the region is active causes Emacs to indent all the lines in the
2561region, aligning them with the line previous to the first line in the
2562region (or with the left margin if there is no previous line).
2563
dfdb4cad
CY
2564** When `occur' is called with a prefix argument, matching strings are
2565collected into the `*Occur*' buffer without line numbers. If there
2566are parenthesized subexpressions in the specified regexp, `occur'
2567reads replacement text that may contain \\& and \\N whose convention
2568follows `replace-match'.
2569
9bae34bf 2570\f
eb199145 2571* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 2572
041d709f 2573** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 2574
b7c3692a 2575** BibTeX mode
dfdb4cad 2576
2de69e00 2577*** BibTeX mode now supports biblatex.
7d301ae6
CY
2578Use the variable `bibtex-dialect' to select different BibTeX dialects.
2579`bibtex-entry-field-alist' is now an obsolete alias for
2580`bibtex-BibTeX-entry-alist'.
2581
dfdb4cad
CY
2582*** New command `bibtex-search-entries', bound to C-c C-a.
2583
b7c3692a 2584*** New `bibtex-entry-format' option `sort-fields', disabled by default.
dfdb4cad 2585
022fe7ce
RW
2586*** New variable `bibtex-search-entry-globally'.
2587
7d301ae6 2588** Browse-url
dfdb4cad 2589
7d301ae6 2590*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
dfdb4cad 2591
7d301ae6
CY
2592*** The default browser used by the package is now the "xdg-open" program,
2593on platforms that support it. This calls your desktop's preferred browser.
2594
86e100a6
GM
2595** Calc
2596
2597*** Support for musical notes.
2598
2599*** Support for logarithmic units.
2600
2601*** No longer uses the tex prefix for TeX specific unit names when
2602using TeX or LaTeX mode.
2603
2604*** New option to highlight selections using faces.
2605
2606*** `calc-histogram' has the option of using a vector to determine the bins.
2607
2608*** New "O" option prefix.
2609
2610*** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
2611
cf16af42
GM
2612** Calendar, Diary, and Appt
2613
7d301ae6 2614*** Diary entries can contain non-printing "comments".
548d0a63
GM
2615See the variable `diary-comment-start'.
2616
5006e634
GM
2617*** Appointments can specify their individual warning times.
2618See the variable `appt-warning-time-regexp'.
2619
0a2bb1a9
GM
2620*** The function specified by `appt-disp-window-function' may be passed
2621lists of arguments if multiple appointments are due at similar times.
2622If you are using a custom function for this, you should update it.
2623
7454f200
GM
2624*** New function `diary-hebrew-birthday'.
2625
e565dd37
GM
2626*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
2627may no longer be nil, but must all be strings.
2628
7d301ae6
CY
2629*** The obsolete (since Emacs 22.1) method of enabling the appt
2630package by adding `appt-make-list' to `diary-hook' has been removed.
2631Use `appt-activate' instead.
cf16af42 2632
cf16af42
GM
2633*** Some appt variables (obsolete since Emacs 22.1) have been removed:
2634appt-issue-message (use the function appt-activate)
2635appt-visible/appt-msg-window (use the variable appt-display-format)
2636
cf16af42
GM
2637*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
2638view-diary-entries, list-diary-entries, show-all-diary-entries
2639
551b046f 2640** CC Mode
dfdb4cad 2641
551b046f 2642*** New feature to "guess" the style in an existing buffer.
7d301ae6 2643The main entry point is M-x c-guess.
041d709f 2644
551b046f
AM
2645*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
2646
dfdb4cad 2647*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
551b046f
AM
2648Thus C-M-a will, by default, go to the beginning of the immediate function,
2649not the top level.
2650
dfdb4cad 2651*** "Macros with semicolons" can be registered for correct indentation.
551b046f
AM
2652Where such a macro ends a line (no semicolon) the next statement is no longer
2653parsed as a statement continuation.
2654
dfdb4cad 2655** Comint and modes derived from it use the standard completion code.
041d709f
CY
2656
2657** Compilation mode
dfdb4cad 2658
7d301ae6 2659*** Compilation mode can be used without Font Lock mode.
041d709f
CY
2660`compilation-parse-errors-function' is now obsolete.
2661
dfdb4cad 2662*** New variable `compilation-filter-start', which is bound while
7d301ae6
CY
2663`compilation-filter-hook' runs. It records the start position of the
2664text inserted by `compilation-filter'.
041d709f 2665
47a6a35f
GM
2666*** `compilation-error-screen-columns' and `compilation-first-column'
2667are obeyed in the editing buffer. So programming language modes can
7d301ae6
CY
2668set them, whereas previously only the value in the *Compilation*
2669buffer was used.
1dce7193 2670
52834b6b
CY
2671** Customize
2672
2673*** Customize buffers now contain a search field.
2674The search is performed using `customize-apropos'.
7d301ae6 2675To turn off the search field, set `custom-search-field' to nil.
52834b6b 2676
8d5dd370 2677*** Options in customize group buffers start out hidden if not customized.
52834b6b
CY
2678Use the arrow to the left of the option name to toggle visibility.
2679
2680*** custom-buffer-sort-alphabetically now defaults to t.
2681
2682*** The color widget now has a "Choose" button, which allows you to
7d301ae6 2683choose a color via `list-colors-display'.
52834b6b 2684
041d709f
CY
2685** D-Bus
2686
5da3be7f
GM
2687*** It is now possible to access buses other than the default system
2688or session bus.
041d709f 2689
7d301ae6 2690*** The `dbus-register-method' and `dbus-register-property' functions
5da3be7f 2691optionally do not register names.
041d709f 2692
7d301ae6 2693*** The new function `dbus-register-service' registers a known service
dfdb4cad 2694name on a D-Bus without also registering a property or a method.
041d709f 2695
f5d6548a 2696** Dired-x
425a25f1 2697
7d301ae6
CY
2698*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
2699if called with a prefix argument, read a file name from the minibuffer
2700instead of using the current buffer.
f5d6548a 2701
7d301ae6 2702*** The "dired local variables" feature of Dired-x is obsolete.
817b48a7 2703The standard directory local variables feature replaces it.
8117868f 2704
041d709f 2705** ERC changes
7492acc9 2706
c4077254
GM
2707*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
2708controlling attempts to autojoin a channel.
041d709f
CY
2709
2710*** New variable `erc-coding-system-precedence': If we use `undecided'
2711as the server coding system, this variable will then be consulted.
2712The default is to decode strings that can be decoded as utf-8 as
2713utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 2714
041d709f 2715** Eshell changes
7492acc9 2716
05f77e38
GM
2717*** The default value of `eshell-directory-name' has changed
2718to be an "eshell" directory in `user-emacs-directory'.
2719The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
2720
2721** gdb-mi
dfdb4cad
CY
2722
2723*** The M-x gdb command now uses the GDB Machine Interface protocol.
05f77e38
GM
2724It now supports multithread non-stop debugging and simultaneous
2725debugging of several threads.
7492acc9 2726
18af70d0
CY
2727** Image mode
2728
05f77e38
GM
2729*** RET (`image-toggle-animation') toggles animation, if applicable.
2730Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 2731
041d709f 2732** Info
723ee192 2733
7d301ae6 2734*** New command M-x info-display-manual displays a named Info manual.
2ebc3b94
GM
2735If that manual is already visited in some Info buffer, it displays
2736that buffer. (This is handy if you have many manuals in many *info*
2737buffers, and don't remember the name of the buffer visiting the manual
2738you want to consult.) Otherwise, it loads and displays the manual.
691cf4a0 2739
24ea72d3
EZ
2740*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
2741This is for compatibility with the stand-alone Info reader program,
2742and also because `Info-edit' is a rarely used command that is disabled
2743by default.
2744
7d301ae6 2745** Mail mode changes (not Message mode)
dfdb4cad 2746
7d301ae6 2747*** New command M-x mail-add-attachment for adding MIME attachments
7d301ae6 2748
dfdb4cad
CY
2749*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
2750(Its name is misleading, since it has nothing to do with MIME
2751attachments.) The old name is now an obsolete alias to the new name.
2752
f2c3a9eb 2753** MH-E has been updated to MH-E version 8.3.1.
041d709f 2754See MH-E-NEWS for details.
37221432 2755
041d709f 2756** Modula-2 mode provides auto-indentation.
37221432 2757
041d709f 2758** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 2759
5d1ac394 2760** nXML mode no longer binds C-RET to `nxml-complete'.
dfdb4cad
CY
2761Completion is now performed via `completion-at-point', bound to C-M-i
2762or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
2763default), this performs tag completion.
5d1ac394 2764
f2c3a9eb
CY
2765** Org mode has been updated to version 7.8.09.
2766See ORG-NEWS for details.
2767
041d709f 2768** Prolog mode has been completely revamped, with lots of additional
7d301ae6
CY
2769functionality such as more intelligent indentation, electricity,
2770support for more variants, including Mercury, and a lot more.
041d709f
CY
2771
2772** Rmail
2773
2774*** The command `rmail-epa-decrypt' decrypts OpenPGP data
2775in the Rmail incoming message.
2776
50419064
GM
2777*** The variable `rmail-message-filter' no longer has any effect.
2778This change was made in Emacs 23.1 but was not advertised at the time.
2779Try using `rmail-show-message-hook' instead.
2780
717a1362 2781** Shell mode
dfdb4cad
CY
2782
2783*** M-x shell prompts for the shell path name if the default directory
2784is a remote file name and neither the environment variable $ESHELL nor
2785the variable `explicit-shell-file-name' is set.
2786
2787*** TAB is now bound to the standard `completion-at-point' command,
2788which now implements the pcomplete rules for shell command completion.
717a1362 2789
7d301ae6
CY
2790** SMTPmail
2791
dfdb4cad 2792*** SMTPmail now uses encrypted connections (via STARTTLS) by default
7d301ae6
CY
2793if the mail server supports them. This uses either built-in GnuTLS
2794support, or the starttls.el library. Customize `smtpmail-stream-type'
2795to change this.
2796
7d301ae6
CY
2797*** The variable `smtpmail-auth-credentials' has been removed.
2798By default, the information is now stored in the file ~/.authinfo.
dfdb4cad
CY
2799This was the default value of smtpmail-auth-credentials. If you had
2800customized smtpmail-auth-credentials to a list of user names and
2801passwords, those settings are not used. During your first connection
2802to the smtp server, Emacs will prompt for the user name and password,
2803and offer to save them to ~/.authinfo. Or you can manually copy the
2804credentials to ~/.authinfo. For example, if you had
7d301ae6
CY
2805
2806 (setq smtpmail-auth-credentials
2807 '(("mail.example.org" 25 "jim" "s!cret")))
2808
2809then the equivalent line in ~/.authinfo would be
2810
2811 machine mail.example.org port 25 login jim password s!cret
2812
2813See the auth-source manual for more information, e.g. on encrypting
2814the credentials file.
2815
7d301ae6 2816*** The variable `smtpmail-starttls-credentials' has been removed.
dfdb4cad 2817If you had that set, you need to put
7d301ae6
CY
2818
2819 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
2820
2821in your ~/.authinfo file instead.
2822
8ce192e3
LI
2823*** SMTPmail defaults to using the address in the From: header as the
2824SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
2825to the address you wish to use instead.
2826
34e8a2da 2827** SQL mode
041d709f 2828
34e8a2da
GM
2829*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
2830and `sql-oracle-scan-on'.
041d709f 2831
dfdb4cad 2832*** New options controlling prompting for login parameters.
34e8a2da
GM
2833Each supported product has a custom variable `sql-*-login-params',
2834which is a list of the parameters to be prompted for before a
2835connection is established.
041d709f
CY
2836
2837*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 2838which causes it to prompt for an SQL product.
041d709f 2839
34e8a2da 2840*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
2841These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
2842given a prefix argument, prompt for a name for the SQL interactive
2843buffer. This reduces the need for calling `sql-rename-buffer'.
2844
2845*** SQL interactive modes suppress command continuation prompts, and
2846replace tabs with spaces. The first change impacts multiple line SQL
2847statements entered with C-j between each line, statements yanked into
2848the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
2849second prevents the MySQL and Postgres interpreters from listing
2850object name completions when sent text via `sql-send-*' functions.
041d709f
CY
2851
2852*** New command `sql-connect' starts a predefined SQLi session,
2853using the login parameters from `sql-connection-alist'.
2854
2855*** New "Save Connection" menu item in SQLi buffers.
2856This gathers the login params specified for the SQLi session, if it
2857was not started by a connection, and saves them as a new connection.
2858
34e8a2da
GM
2859*** New commands for listing database objects and details:
2860sql-list-all and sql-list-table.
041d709f
CY
2861
2862*** An API for manipulating SQL product definitions has been added.
2863
2864** TeX modes
2865
2866*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 2867
459bba37 2868** Tramp
dfdb4cad 2869
7d301ae6 2870*** New inline access method "ksu" (kerberized su).
dfdb4cad 2871
459bba37 2872*** The following access methods are discontinued: "ssh1_old",
ea843702 2873"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
dfdb4cad 2874
b011fbfe
GM
2875*** The user option `remote-file-name-inhibit-cache' controls whether
2876remote file attributes are cached for better performance.
dfdb4cad 2877
58f74fe4
MA
2878*** The option `ange-ftp-binary-file-name-regexp' has changed its
2879default value to "".
dfdb4cad 2880
7d301ae6
CY
2881*** Handlers for `file-selinux-context' and `set-file-selinux-context'
2882for remote machines which support SELinux.
58f74fe4 2883
dfdb4cad 2884** New function `url-queue-retrieve', which behaves like url-retrieve,
a48ec60c
GM
2885but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
2886the degree of parallelism.
177549d0 2887
0c32ce32
CY
2888** VC and related modes
2889
2890*** Support for pulling on distributed version control systems.
7d301ae6
CY
2891The command C-x v + (`vc-pull') runs a "pull" operation, if it is
2892supported (currently with Bzr, Git, and Mercurial), to update the
2893current branch and working tree. A prefix argument means to prompt
2894the user for specifics, e.g. a pull location.
0c32ce32 2895
dab3703d 2896*** `vc-update' is now an alias for `vc-pull'.
0c32ce32
CY
2897
2898*** Support for merging on distributed version control systems.
7d301ae6
CY
2899The command C-x v m (`vc-merge') now runs a "merge" operation, if it
2900is supported (currently with Bzr, Git, and Mercurial), to merge
2901changes from another branch into the current one. It prompts for
2902specifics, e.g. a merge source.
0c32ce32 2903
2afef60a 2904*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 2905shows a diff while querying the user. It defaults to t.
2afef60a 2906
d4eb88c7
CY
2907*** Log entries in some Log View buffers can be toggled to display a
2908longer description by typing RET (log-view-toggle-entry-display).
dab3703d
GM
2909This is currently supported for Bzr, Git, and Mercurial (to support
2910another backend, define a `log-view-expanded-log-entry-function').
7d301ae6 2911In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
d4eb88c7
CY
2912use this to display the full log entry for the revision at point.
2913
1c6c854e
CS
2914*** New command `vc-ediff' allows visual comparison of two revisions
2915of a file similar to `vc-diff', but using ediff backend.
2916
86c60681
CY
2917*** The option `vc-initial-comment' was removed in Emacs 23.2, but
2918this was not advertised at the time.
2919
86c60681
CY
2920*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
2921Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
2922this was not advertised at the time.
2923
041d709f
CY
2924** Obsolete modes
2925
23d70505
GM
2926*** abbrevlist.el
2927
f8ca9162 2928*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
2929
2930*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
2931You can get a comparable behavior with:
2932(setq completion-styles '(partial-completion initials))
2933(setq completion-pcm-complete-word-inserts-delimiters t)
2934
23d70505
GM
2935*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
2936
2c719188 2937*** pgg is obsolete (use EasyPG instead).
041d709f
CY
2938
2939*** sregex.el is obsolete, since rx.el is a strict superset.
2940
23d70505
GM
2941*** s-region.el and pc-select.el are obsolete.
2942They are superseded by shift-select-mode, enabled by default since 23.1.
2943
2c719188 2944*** vc-mcvs.el is obsolete (for lack of a maintainer).
ca5eed61 2945
0fe719e6
GM
2946** Miscellaneous
2947
05f77e38 2948*** The Landmark game is now invoked with `landmark', not `lm'.
c6ad2a4e 2949Its functions and variables have been similarly renamed.
05f77e38 2950
dfdb4cad 2951*** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
05f77e38
GM
2952(This interfered with cua-mode.)
2953
9f678528
GM
2954*** f90.el has some support for Fortran 2008 syntax.
2955
0fe719e6
GM
2956*** `copyright-fix-years' can optionally convert consecutive years to ranges.
2957
5b3e6db8
GM
2958*** New command `nato-region' converts text to NATO phonetic alphabet.
2959
eb199145
GM
2960\f
2961* New Modes and Packages in Emacs 24.1
d445b3f8 2962
60e56523 2963** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 2964original buffers. It is bound to "e" in Occur mode.
60e56523 2965
a075a2c5
GM
2966** New global minor mode electric-pair-mode.
2967When enabled, typing an open parenthesis automatically inserts the
2968matching closing one.
2969
2970** New global minor mode electric-indent-mode.
2971When enabled, typing certain characters triggers reindentation.
cd3308f3
GM
2972Major modes wishing to use this can set electric-indent-chars or
2973electric-indent-functions.
a075a2c5
GM
2974
2975** New global minor mode electric-layout-mode.
2976When enabled, typing certain characters automatically inserts newlines.
cd3308f3 2977Major modes wishing to use this can set electric-layout-rules.
3b843809 2978
a83ec3c9
CY
2979** tabulated-list.el provides a generic major mode for tabulated data,
2980from which other modes can be derived.
2981
d02c9bcd
SM
2982** pcase.el provides the ML-style pattern matching macro `pcase'.
2983
7725ebb7
MA
2984** secrets.el is an implementation of the Secret Service API, an
2985interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
2986Secret Service API requires D-Bus for communication. The command
2987`secrets-show-secrets' offers a buffer with a visualization of the
2988secrets.
7725ebb7 2989
f9e78150
MA
2990** notifications.el provides an implementation of the Desktop
2991Notifications API. It requires D-Bus for communication.
2992
12fe5bcc
MA
2993** soap-client.el supports access to SOAP web services from Emacs.
2994soap-inspect.el is an interactive inspector for SOAP WSDL structures.
2995
ff1796f3 2996** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 2997
53bbe3ad 2998** New emacs-lock.el package.
7d301ae6
CY
2999The previous version has been moved to obsolete/old-emacs-lock.el.
3000Now, there is a proper minor mode `emacs-lock-mode'. Protection
3001against exiting Emacs and killing the buffer can be set separately.
3002The mechanism for automatically turning off protection for buffers
3003with dead inferior processes has been generalized.
53bbe3ad 3004
eb199145
GM
3005\f
3006* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 3007
7d301ae6
CY
3008** Passing a nil argument to a minor mode function call now ENABLES
3009the minor mode unconditionally. This is so that you can write e.g.
3010
dfdb4cad 3011 (add-hook 'text-mode-hook 'foo-mode)
7d301ae6 3012
dfdb4cad
CY
3013to enable foo-mode in Text mode buffers, removing the need for
3014`turn-on-foo-mode' style functions. This affects all mode commands
3015defined by `define-minor-mode'. If called interactively, the mode
3016command still toggles the minor mode.
7d301ae6 3017
d268b4fe
CY
3018** The return value of `backup-buffer' has changed.
3019It is now a list of three elements, where the second element is a list
3020describing the original file's SELinux context. If Emacs or the
f003f294 3021system lacks SELinux support, the context list is (nil nil nil nil).
7d301ae6 3022See "Basic SELinux support" above, under "Changes in Emacs 24.1".
d268b4fe 3023
dfdb4cad
CY
3024** `char-direction-table' and the `char-direction' function were deleted.
3025They were buggy and inferior to the new support of bidirectional
3026editing introduced in Emacs 24. If you need the bidirectional
3027properties of a character, use `get-char-code-property' with the last
3028argument `bidi-class'.
fa6996bc 3029
470d996d
TV
3030** `copy-directory' now copies the source directory as a subdirectory
3031of the target directory, if the latter is an existing directory. The
3032new optional arg COPY-CONTENTS, if non-nil, makes the function copy
3033the contents directly into a pre-existing target directory.
3034
9173a8fb
CY
3035** For mouse click input events in the text area, the Y pixel
3036coordinate in the POSITION list now counts from the top of the text
3037area, excluding any header line. Previously, it counted from the top
3038of the header line.
3039
7d301ae6
CY
3040** Support for "old-style" backquotes, obsolete for 10+ years, has
3041been further reduced. Now a backquote not followed by a space is
3042always treated as a "new-style" backquote. Please remove all
3043"old-style" backquotes from your code. If your code uses backquotes
3044as documented in the Elisp manual, and compiles without warning, then
3045you have nothing to do in this regard. Code not following the
3046appropriate conventions may fail to compile.
50ab02c5
CY
3047
3048The most common cause of trouble seems to be an old-style backquote
3049followed by a newline. Another cause of trouble is vector notation
3050for key sequence notation: instead of [(control ,)] and [(control ')],
3051you should write [(control ?,)] and [(control ?')], which will work in
7d301ae6 3052older Emacsen too.
288cf4e9 3053
520f2425
GM
3054** The macro `eval-at-startup' was removed in Emacs 23.2, but this
3055was not advertised at the time. The function `custom-initialize-delay'
3056replaced all known uses.
3057
7d301ae6
CY
3058** `view-buffer' now treats special mode-class in the same way that
3059`view-file' has since Emacs 22 (i.e. it won't enable View mode if the
3060major mode is special).
fd5c9dfa 3061
7d301ae6 3062** Menu and tool bar changes
6431f2e6 3063
7d301ae6 3064*** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
3065and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
3066With these alist entries omitted, `make-frame' checks the value of the
3067variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
3068a menu-bar or tool-bar, respectively. If the alist entries are added,
3069they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 3070
7d301ae6
CY
3071*** The menu bar bindings's caches are not used any more.
3072Use (where-is-internal <def> nil t) instead.
3073
fe0aa820 3074** Regions created by mouse dragging are now normal active regions,
dfdb4cad 3075similar to those created by shift-selection (see Selection changes
7d301ae6
CY
3076above). In previous Emacs versions, these regions were delineated by
3077`mouse-drag-overlay'; that variable has been removed.
d6d8ee7a 3078
7d301ae6
CY
3079** The fourth argument of `filter-buffer-substring' has been removed.
3080If you want to remove text properties from the final result, simply
3081pass the result through substring-no-properties.
34c99998 3082
4583e796
GM
3083** cl.el no longer provides `cl-19'.
3084
7d301ae6
CY
3085** The following obsolete functions and aliases have been removed
3086(the appropriate new function is given in parentheses; "not needed"
3087means you can just remove all calls to the function in question):
3088
3089*** `comint-kill-output' (`comint-delete-output')
3090*** `decompose-composite-char' (`char-to-string')
3091*** `outline-visible' (`outline-invisible-p')
3092*** `internal-find-face' (`facep')
3093*** `internal-get-face' (`facep and check-face')
3094*** `frame-update-faces' (not needed)
3095*** `frame-update-face-colors' (`frame-set-background-mode')
3096*** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
2c719188 3097*** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
7d301ae6
CY
3098*** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
3099*** `x-make-font-bold-italic' (`make-face-bold-italic')
3100*** `x-make-font-unbold' (`make-face-unbold')
3101*** `x-make-font-unitalic' (`make-face-unitalic')
3102*** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
3103*** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
3104*** `iswitchb-default-keybindings' (`iswitchb-mode')
3105*** `char-bytes' (== 1)
3106*** `isearch-return-char' (`isearch-printing-char')
3107*** `make-local-hook' (not needed)
3108*** `set-screen-height' (`set-frame-height')
3109*** `set-screen-width' (`set-frame-width')
3110
7d301ae6
CY
3111** The following obsolete variables and varaliases have been removed
3112(the appropriate new variable is given in parentheses):
3113
3114*** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
3115*** `vc-header-alist' (`vc-BACKEND-header')
3116*** `directory-sep-char' (== ?/)
3117*** `font-lock-defaults-alist' (`font-lock-defaults')
3118*** `e' (`float-e').
3226d6ca 3119
041d709f 3120** The following obsolete files were removed:
7b0e3048
GM
3121sc.el, x-menu.el, rnews.el, rnewspost.el
3122
7d301ae6
CY
3123** The format of the finder-inf.el file has changed, since the Finder
3124mechanism is now based on the package system. The variable
3125`finder-package-info' is replaced by `package--builtins' and
3126`finder-keywords-hash'.
33658d4e 3127
c2c79260
DE
3128** When generating autoloads, `update-directory-autoloads' no longer
3129assumes every inspected file is in your `load-path'. It instead
3130generates relative names according to the current `load-path'.
3131
eb199145 3132\f
93e0bed6 3133* Lisp Changes in Emacs 24.1
9097e8af 3134
041d709f 3135** Code can now use lexical scoping by default instead of dynamic scoping.
dfdb4cad 3136The `lexical-binding' variable enables lexical scoping for local
48da7392 3137variables. It is typically set via a file-local variable in the first
dfdb4cad
CY
3138line of the file, in which case it applies to all the code in that
3139file.
3140
041d709f
CY
3141*** `eval' takes a new optional argument `lexical' to choose the new lexical
3142binding instead of the old dynamic binding mode.
dfdb4cad 3143
041d709f
CY
3144*** Lexically scoped interpreted functions are represented with a new form
3145of function value which looks like (closure ENV ARGS &rest BODY).
3146
3147*** New macro `letrec' to define recursive local functions.
dfdb4cad
CY
3148
3149*** `defvar' and `defconst' now mark the variable as special (dynamic).
3150So do `defcustom' and other forms that call `defvar' as a subroutine.
3151
041d709f
CY
3152*** New function `special-variable-p' to check whether a variable is
3153declared as dynamically bound.
3154
88ed9e87
SM
3155*** The form ((lambda ...) ...) is deprecated.
3156
041d709f
CY
3157** An Emacs Lisp testing tool is now included.
3158Emacs Lisp developers can use this tool to write automated tests for
3159their code. See the ERT info manual for details.
3160
3161** Changes for bidirectional display and editing
f1816485 3162
041d709f 3163*** New function `current-bidi-paragraph-direction'.
7d301ae6 3164This returns the base direction of the paragraph at point.
041d709f 3165
041d709f 3166*** New function `bidi-string-mark-left-to-right'.
dfdb4cad
CY
3167Given a string containing characters from right-to-left scripts, this
3168function returns another string which can be safely inserted into a
3169buffer, such that any following text will be always displayed to the
7d301ae6
CY
3170right of that string. (This works by appending an invisible Unicode
3171"LEFT-TO-RIGHT MARK" character if the argument string might need it.)
041d709f 3172
7d301ae6 3173This is useful when the buffer has overall left-to-right paragraph
dfdb4cad
CY
3174direction and you need to insert a string whose contents are not known
3175in advance, without disrupting the layout of the line.
041d709f 3176
bee0fcef 3177** Window changes
dfdb4cad 3178
c4682d18
MR
3179*** Window tree functions are accessible in Elisp.
3180Functions are provided to return the parent, siblings or child windows
3181of any window including internal windows (windows not associated with a
3182buffer) in the window tree.
dfdb4cad 3183
24300f5f
CY
3184**** New function `window-valid-p' gives non-nil for live and internal
3185windows.
dfdb4cad 3186
24300f5f 3187**** Window manipulation can deal with internal windows.
c4682d18
MR
3188Many window handling functions like `split-window', `delete-window', or
3189`delete-other-windows' as well as the window resizing functions can now
3190act on any window including internal ones.
dfdb4cad 3191
c4682d18
MR
3192*** window-total-height/-width vs window-body-height/-width.
3193The function `window-height' has been renamed to `window-total-height'
3194and `window-width' has been renamed to `window-body-width'. The old
3195names are provided as aliases. Two new functions `window-total-width'
3196and `window-body-height' are provided.
dfdb4cad 3197
c4682d18
MR
3198*** Window parameters specific to window handling functions.
3199For each window you can specify a parameter to override the default
3200behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
3201and `delete-other-windows'. The variable `ignore-window-parameters'
3202allows to ignore processing such parameters.
dfdb4cad 3203
c4682d18 3204*** New semantics of third argument of `split-window'.
c4682d18
MR
3205The third argument of `split-window' has been renamed to SIDE and can be
3206set to any of the values 'below, 'right, 'above, or 'left to make the
3207new window appear on the corresponding side of the window that shall be
3208split. Any other value of SIDE will cause `split-window' to split the
3209window into two side-by-side windows as before.
dfdb4cad 3210
c4682d18 3211*** Window resizing functions.
487ffd7a 3212A new standard function for resizing windows called `window-resize' has
c4682d18
MR
3213been introduced. This and all other functions for resizing windows no
3214longer delete any windows when they become too small.
dfdb4cad 3215
b3c0dbfd
MR
3216*** Deleting the selected window now selects the most recently selected
3217live window on that frame instead.
dfdb4cad 3218
c4682d18
MR
3219*** `adjust-window-trailing-edge' adjustments.
3220`adjust-window-trailing-edge' can now deal with fixed-size windows and
3221is able to resize other windows if a window adjacent to the trailing
3222edge cannot be shrunk any more. This makes its behavior more similar to
3223that of Emacs 21 without compromising, however, its inability to delete
3224windows which was introduced in Emacs 22.
dfdb4cad 3225
c4682d18
MR
3226*** Window-local buffer lists.
3227Windows now have local buffer lists. This means that removing a buffer
3228from display in a window will preferably show the buffer previously
3229shown in that window with its previous window-start and window-point
3230positions. This also means that the same buffer may be automatically
3231shown twice even if it already appears in another window.
dfdb4cad 3232
bee0fcef
CY
3233*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
3234which if non-nil requires the buffer to be displayed in the currently
3235selected window, signaling an error otherwise. If nil, another window
3236can be used, e.g. if the selected one is strongly dedicated.
dfdb4cad 3237
0a2132ba 3238*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
3239to `split-window-below' and `split-window-right' respectively.
3240The old names are kept as aliases.
dfdb4cad 3241
0a2132ba
CY
3242*** Display actions
3243
3244**** The second arg to `display-buffer' and `pop-to-buffer' is now
3245named ACTION, and takes a display action of the same form as
3246`display-buffer-base-action' (see Changes, above). A non-nil,
3247non-list value is treated specially, as the old meaning.
3248
3249**** New variable `display-buffer-overriding-action'.
3250
3251**** The procedure of `display-buffer' etc. to choose a window is
3252determined by combining `display-buffer-overriding-action',
3253`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
3254and `display-buffer-fallback-action'. The second and fourth of these
3255are user-customizable variables.
3256
3257See the docstring of `display-buffer' for details.
bee0fcef 3258
20d2304d
CY
3259*** New functions `window-state-get' and `window-state-put'.
3260These functions allow to save and restore the state of an arbitrary
3261frame or window as an Elisp object.
3262
a2a25d24 3263** Completion
041d709f 3264
7d301ae6
CY
3265*** New variable `completion-extra-properties' used to specify extra
3266properties of the current completion:
a2a25d24
SM
3267- :annotate-function, same as the old completion-annotate-function.
3268- :exit-function, function to call after completion took place.
3269
7d301ae6
CY
3270*** Functions on `completion-at-point-functions' can return any of the
3271properties valid for `completion-extra-properties'.
a2a25d24 3272
7d301ae6 3273*** `completion-annotate-function' is obsolete.
a2a25d24 3274
620c53a6
SM
3275*** New `metadata' method for completion tables. The metadata thus returned
3276can specify various details of the data returned by `all-completions':
3277- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
3278 used to select a style in completion-category-overrides.
3279- `annotation-function' to add annotations in *Completions*.
3280- `display-sort-function' to specify how to sort entries in *Completions*.
3281- `cycle-sort-function' to specify how to sort entries when cycling.
3282
7d301ae6
CY
3283*** `minibuffer-local-filename-must-match-map' is not used any more.
3284Instead, the bindings in `minibuffer-local-filename-completion-map'
3285are combined with `minibuffer-local-must-match-map'.
de09aa52
CY
3286
3287*** New variable `completing-read-function' allows overriding the
3288behavior of `completing-read'.
3289
f042970d 3290** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
3291text terminal display, via a char-table entry that is a cons cell.
3292
7d301ae6 3293** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
f6d62986
SM
3294Instead, the offending function is removed.
3295
b1f6fa26
CY
3296** New hook types
3297
3298*** New function `run-hook-wrapped' for running an abnormal hook by
3299passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 3300Like `run-hook-with-args-until-success', it stops at the first
5385447f 3301non-nil return value.
e7bc51d0 3302
b1f6fa26
CY
3303*** New macro `with-wrapper-hook' for running an abnormal hook as a
3304set of "wrapping" filters, similar to around advice.
54521c99
GM
3305(A version of this macro was actually added in Emacs 23.2 but was not
3306advertised at the time.)
f6d62986 3307
0b19b281 3308** Debugger changes
dfdb4cad 3309
0b19b281 3310*** New macro `condition-case-unless-debug' (this was actually added in
1be3ca5a 3311Emacs 23.1 as condition-case-no-debug, but not advertised)
dfdb4cad 3312
0b19b281 3313*** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
dfdb4cad 3314
0b19b281 3315*** Variable `stack-trace-on-error' removed.
dfdb4cad 3316
0b19b281
CY
3317*** The debugger can now "continue" from an error, which means it will
3318jump to the error handler as if the debugger had not been invoked
3319instead of jumping all the way to the top-level.
dfdb4cad 3320
0b19b281
CY
3321*** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
3322This can be useful when `inhibit-quit' is set.
d6b1d521 3323
953cebf5 3324** The new function `server-eval-at' allows evaluation of Lisp forms on
37576acd 3325named Emacs server instances.
7deebf1b 3326
1b9f60cc
GM
3327** `call-process' and `call-process-region' allow a `(:file "file")' spec
3328to redirect STDOUT to a file.
7deebf1b 3329
7d301ae6
CY
3330** The function `format-time-string' now supports the %N directive,
3331for higher-resolution time stamps.
da97a9e6 3332
0b19b281 3333** New input reading functions
dfdb4cad 3334
0b19b281
CY
3335*** New function `read-char-choice' reads a restricted set of
3336characters, discarding any inputs not inside the set.
dfdb4cad 3337
0b19b281
CY
3338*** The command `read-color' now requires a match for a color name
3339or RGB triplet, instead of signaling an error if the user provides
3340invalid input.
dfdb4cad 3341
0b19b281 3342**** `facemenu-read-color' is now an alias for `read-color'.
3ef01959 3343
2e288d54
JB
3344** `image-library-alist' is renamed to `dynamic-library-alist'.
3345The variable is now used to load all kind of supported dynamic libraries,
3346not just image libraries. The previous name is still available as an
3347obsolete alias.
3348
0b19b281 3349** Syntax parsing changes
dfdb4cad 3350
0b19b281 3351*** New variable `syntax-propertize-function'.
04e2ce72 3352This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
3353This allows syntax-table properties to be set independently from font-lock:
3354just call syntax-propertize to make sure the text is propertized.
3355Together with this new variable come a new hook
3356syntax-propertize-extend-region-functions, as well as two helper functions:
3357syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
3358as-is; and syntax-propertize-rules which provides a new way to specify
3359syntactic rules.
dfdb4cad 3360
0b19b281 3361*** Syntax tables support a new "comment style c" additionally to style b.
a2e5caf7 3362
7d301ae6 3363** New hook `post-self-insert-hook', run after `self-insert-command'.
041d709f 3364
4e2db1fe 3365** frame-local variables cannot be let-bound any more.
041d709f 3366
15de15c6 3367** Major and minor mode changes
dfdb4cad 3368
0b19b281
CY
3369*** `set-auto-mode' now respects mode: local variables at the end of files,
3370as well as those in the -*- line.
dfdb4cad 3371
15de15c6
CY
3372*** `prog-mode' is a new major mode from which programming modes
3373should be derived.
dfdb4cad 3374
15de15c6
CY
3375**** `prog-mode-hook' can be used to enable features for programming
3376modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
3377on-the-fly spell checking for comments and strings.
dfdb4cad 3378
14dd22d2
JB
3379**** New minor modes `prettify-symbols-mode' and
3380`global-prettify-symbols-mode' let the user enable symbol
3381prettification (replacing a string like "lambda" with the Greek lambda
3382character).
398b4366 3383
15de15c6
CY
3384*** New hook `change-major-mode-after-body-hook', run by
3385`run-mode-hooks' just before any other mode hooks.
dfdb4cad 3386
7a9a2fc6
GM
3387*** Enabled globalized minor modes can be disabled in specific major modes.
3388If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
3389major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
dfdb4cad 3390
feb8a83a 3391*** `define-minor-mode' accepts new keywords :variable, :after-hook.
f44379e7 3392
7d301ae6
CY
3393** File-handling changes
3394
7d301ae6 3395*** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
3396Trashing is performed if TRASH and `delete-by-moving-to-trash' are
3397both non-nil. Interactively, TRASH defaults to t, unless a prefix
3398argument is supplied (see Trash changes, above).
53967e09 3399
7d301ae6 3400*** New file predicates: `file-equal-p', `file-in-directory-p'.
ec70a47d 3401
4039c786
CY
3402** Tool-bars can display separators.
3403Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 3404i.e. via menu entries of the form `(menu-item "--")'.
9317e499 3405
00fe2df1
JL
3406** Image API
3407
18af70d0
CY
3408*** Animated images support (currently animated gifs only).
3409
3410**** `image-animated-p' returns non-nil if an image can be animated.
3411
3412**** `image-animate' animates a supplied image spec.
3413
3414**** `image-animate-timer' returns the timer object for an image that
3415is being animated.
00fe2df1 3416
7cb76fe0
GM
3417*** `image-extension-data' has been renamed to `image-metadata'.
3418The old name is an obsolete alias to the new one.
1546c559 3419
b4ac6e8c
GM
3420*** Image mode can view any image type that ImageMagick supports.
3421This requires Emacs to be built with ImageMagick support.
7d301ae6
CY
3422
3423**** New function `imagemagick-types', defined if ImageMagick support
3424is enabled, returns a list of image file extensions that your
3425ImageMagick installation supports.
3426
3427**** New function `imagemagick-register-types' enables ImageMagick
3428image types in Image mode and in `create-image' and other helper
3429functions.
3430
3431**** New option `imagemagick-types-inhibit' excludes certain
3432ImageMagick image types from `imagemagick-register-types'.
3433
7d301ae6
CY
3434**** With ImageMagick support, there are extra Image mode commands to
3435resize and rotate images: `image-transform-fit-to-height',
3436`image-transform-fit-to-width', `image-transform-set-rotation', and
3437`image-transform-set-scale'.
041d709f 3438
7d301ae6
CY
3439** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
3440passes it to the mail user agent function. This argument specifies an
3441action for returning to the caller after finishing with the mail. For
3442example, this is used by Rmail to optionally delete a mail window.
b4ac6e8c 3443
71c17aec 3444** XML and HTML parsing
483ab230
CY
3445If Emacs is compiled with libxml2 support, there are two new
3446functions: `libxml-parse-html-region' (which parses "real world" HTML)
3447and `libxml-parse-xml-region' (which parses XML). Both return an
3448Emacs Lisp parse tree.
4b9832a6 3449
7d301ae6 3450** Networking and encryption changes
e2574f2c 3451
7d301ae6
CY
3452*** `open-network-stream' can now be used to open an encrypted stream.
3453It now accepts an optional `:type' parameter for initiating a TLS
3454connection, directly or via STARTTLS. To do STARTTLS, additional
3455parameters (`:end-of-command', `:success', `:capabilities-command')
3456must also be supplied.
3457
3458*** New library gnutls.el.
dfdb4cad
CY
3459The new function `gnutls-available-p' returns non-nil if Emacs is
3460built with GnuTLS support. The main entry points are
3461`open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
3462these functions through `open-network-stream', because that can
7d301ae6
CY
3463upgrade connections through STARTTLS opportunistically or use plain
3464SSL, depending on your needs. For debugging, set `gnutls-log-level'
3465greater than 0.
3466
7d301ae6
CY
3467*** New primitive `secure-hash' that supports many secure hash algorithms:
3468md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
3469sha1.el has been removed. The `sha1' feature is provided by default.
71c17aec 3470
a6020335
MH
3471** Isearch
3472
3473*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
3474
9326ba26
CY
3475** Progress reporters can now "spin".
3476The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
3477now be nil, or omitted. This makes a "non-numeric" reporter. Each
3478time you call `progress-reporter-update' on that progress reporter,
3479with a nil or omitted VALUE argument, the reporter message is
3480displayed with a "spinning bar".
3481
3e214b50
JB
3482** New variable `revert-buffer-in-progress-p' is true while a buffer is
3483being reverted, even if the buffer has a local `revert-buffer-function'.
3484
001bf877
GM
3485** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
3486If delayed-warnings-list is non-nil, the command loop calls
7d301ae6
CY
3487`delayed-warnings-hook' after `post-command-hook'. At present, this
3488is only used by Emacs on some platforms to display warnings during
3489startup, which might otherwise not be noticed. This uses the
3490functions `display-delayed-warnings' and `collapse-delayed-warnings'.
001bf877 3491
6420d28b
CY
3492** rx.el has a new `group-n' construct for explicitly numbered groups.
3493
dac86404
GM
3494** New function `make-composed-keymap' that constructs a new keymap
3495from multiple input maps. You can use this to make a keymap that
3496inherits from multiple maps, eg:
3497 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 3498
c8f6ec5c
GM
3499** New function `string-prefix-p'.
3500(This was actually added in Emacs 23.2 but was not advertised at the time.)
3501
27f7ef2f 3502** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
3503This means that the empty symbol can now be read back. Also, #: by itself
3504(when not immediately followed by a possible symbol character) stands for
3505an empty uninterned symbol.
041d709f 3506
fead402d
CY
3507** New math functions `isnan', `copysign', `frexp', `ldexp'.
3508
7d301ae6 3509** The following functions and variables are obsolete:
041d709f 3510
05f77e38
GM
3511*** `tooltip-use-echo-area' is obsolete.
3512Rather than setting this to t, disable Tooltip mode instead.
3513
041d709f
CY
3514*** buffer-substring-filters is obsolete.
3515Use `filter-buffer-substring-functions' instead.
3516
3517*** `byte-compile-disable-print-circle' is obsolete.
3518
3519*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
3520Use `post-command-hook' instead.
3521
67e729a5
CY
3522*** `font-lock-maximum-size' is obsolete.
3523
eb199145 3524\f
93e0bed6 3525* Changes in Emacs 24.1 on Non-Free Operating Systems
d53a60a6 3526
7a22e700 3527** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
3528and also when HOME is set to C:\ by default.
3529
7a22e700 3530** New configure.bat options
04779484 3531
7a22e700 3532*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 3533
7a22e700 3534*** --distfiles specifies files to be included in binary distribution.
e2574f2c 3535
7a22e700
OK
3536*** --without-gnutls disables automatic GnuTLS detection.
3537
a0d363f4 3538*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 3539
0a19a6f8 3540** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 3541
1f5e1a16
GM
3542** The Lisp function `w32-default-color-map' is now obsolete.
3543(It is only used internally in the Emacs C code.)
5430d399 3544
1f5e1a16
GM
3545** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
3546reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 3547
ad7c802c
CY
3548** On Mac OS X, dragging a file into Emacs visits the file, like on
3549other platforms, rather than inserting its contents into the buffer.
3550
05197f40 3551\f
a933dad1 3552----------------------------------------------------------------------
5b87ad55 3553This file is part of GNU Emacs.
a933dad1 3554
ab73e885 3555GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 3556it under the terms of the GNU General Public License as published by
ab73e885
GM
3557the Free Software Foundation, either version 3 of the License, or
3558(at your option) any later version.
5b87ad55
GM
3559
3560GNU Emacs is distributed in the hope that it will be useful,
3561but WITHOUT ANY WARRANTY; without even the implied warranty of
3562MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3563GNU General Public License for more details.
a933dad1 3564
5b87ad55 3565You should have received a copy of the GNU General Public License
ab73e885 3566along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 3567
05197f40 3568\f
a933dad1
DL
3569Local variables:
3570mode: outline
3571paragraph-separate: "[ \f]*$"
3572end: