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1 GNU Emacs NEWS -- history of user-visible changes.
2
3 Copyright (C) 2010-2012 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
5
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
8
9 This file is about changes in Emacs version 24.
10
11 See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12 and NEWS.1-17 for changes in older Emacs versions.
13
14 You can narrow news to a specific version by calling `view-emacs-news'
15 with a prefix argument or by typing C-u C-h C-n.
16
17 Temporary note:
18 +++ indicates that the appropriate manual has already been updated.
19 --- means no change in the manuals is called for.
20 When you add a new item, please add it without either +++ or ---
21 so we will look at it and add it to the manual.
22
23 \f
24 * Installation Changes in Emacs 24.3
25
26 ---
27 ** The default toolkit has been changed to Gtk+ version 3.
28 If you don't pass --with-x-toolkit to configure or if you pass
29 --with-x-toolkit=gtk or --with-x-toolkit=yes, configure will try to build
30 with Gtk+ version 3, and if that fails, try Gtk+ version 2.
31 You can explicitly require a specific version by passing
32 --with-x-toolkit=gtk2 or --with-x-toolkit=gtk3 to configure.
33
34 ---
35 ** New configure option '--without-all' to disable additional features.
36 This disables most of the features that are normally enabled by default.
37
38 ---
39 ** New configure option '--enable-link-time-optimization' to utilize
40 an appropriate feature provided by GCC since version 4.5.0.
41
42 ---
43 ** New configure option '--enable-gcc-warnings', intended for developers.
44 If building with GCC, this enables compile-time checks that warn about
45 possibly-questionable C code. On a recent GNU system there should be
46 no warnings; on older and on non-GNU systems the generated warnings
47 may be useful.
48
49 ---
50 ** The configure option '--enable-use-lisp-union-type' has been
51 renamed to '--enable-check-lisp-object-type', as the resulting
52 Lisp_Object type no longer uses a union to implement the compile time
53 check that this option enables.
54
55 ---
56 ** The configure option '--disable-maintainer-mode' has been removed,
57 as it was confusingly-named and rarely useful.
58
59 ---
60 ** You can use `NO_BIN_LINK=t make install' to prevent the installation
61 overwriting "emacs" in the installation bin/ directory with a link
62 to emacs-VERSION.
63
64 ---
65 ** The configure options `--program-prefix', `--program-suffix', and
66 `--program-transform-name' apply to more than just the installed
67 binaries. Now they also affect the man pages, icons, and the
68 etc/emacs.desktop file; but not the info pages, since this would break
69 links between the various manuals.
70
71 ---
72 ** Emacs uses libtinfo in preference to libncurses, if available.
73
74 ---
75 ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
76 /usr/pkg/lib to the linker search path. You must add them yourself if
77 you want them.
78
79 ---
80 ** The standalone scripts rcs-checkin and vcdiff have been removed
81 (from the bin and libexec directories, respectively). The former is
82 no longer relevant, the latter is replaced by lisp (in vc-sccs.el).
83
84 \f
85 * Startup Changes in Emacs 24.3
86
87 +++
88 ** Emacs no longer searches for `leim-list.el' files beneath the standard
89 lisp/ directory. There should not be any there anyway. If you have
90 been adding them there, put them somewhere else, eg site-lisp.
91
92 ---
93 ** The `--no-site-lisp' command line option now works for Nextstep builds.
94
95 \f
96 * Changes in Emacs 24.3
97
98 +++
99 ** Most y-or-n prompts now allow you to scroll the selected window.
100 Typing C-v or M-v at a y-or-n prompt scrolls forward or backward
101 respectively, without exiting from the prompt.
102
103 ** Mode line changes
104 ---
105 *** New option `mode-line-default-help-echo' specifies the help text
106 (shown in a tooltip or in the echo area) for any part of the mode line
107 that does not have its own specialized help text.
108 +++
109 *** You can now click mouse-3 in the coding system indicator to invoke
110 `set-buffer-file-coding-system'.
111
112 ** Help changes
113
114 +++
115 *** `C-h f' (describe-function) can now perform autoloading.
116 When this command is called for an autoloaded function whose docstring
117 contains a key substitution construct, that function's library is
118 automatically loaded, so that the documentation can be shown
119 correctly. To disable this, set `help-enable-auto-load' to nil.
120
121 ---
122 *** `C-h f' now reports previously-autoloaded functions as "autoloaded",
123 even after their associated libraries have been loaded (and the
124 autoloads have been redefined as functions).
125
126 ** Minibuffer changes
127 ---
128 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
129 next and previous path separator, respectively.
130 +++
131 *** minibuffer-electric-default-mode can rewrite (default ...) to [...].
132 Just set minibuffer-eldef-shorten-default to t before enabling the mode.
133
134 +++
135 ** ImageMagick support, if available, is automatically enabled.
136 It is no longer necessary to call `imagemagick-register-types'
137 explicitly to install ImageMagick image types; that function is called
138 automatically at startup, or when customizing an imagemagick- option.
139 +++
140 *** Setting `imagemagick-types-inhibit' to t now disables the use of
141 ImageMagick to view images. You must call imagemagick-register-types
142 afterwards if you do not use customize to change this.
143 +++
144 *** The new variable `imagemagick-enabled-types' also affects which
145 ImageMagick types are treated as images. The function
146 `imagemagick-filter-types' returns the list of types that will be
147 treated as images.
148 ---
149 *** Images displayed via ImageMagick now support transparency and the
150 :background image spec property.
151
152 ** Server and client changes
153 +++
154 *** emacsclient now obeys string values for `initial-buffer-choice',
155 if it is told to open a new frame without specifying any file to visit
156 or expression to evaluate.
157 ---
158 *** New option `server-auth-key' specifies a shared server key.
159
160 +++
161 ** In the Package Menu, newly-available packages are listed as "new",
162 and sorted above the other "available" packages by default.
163
164 +++
165 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
166 This minor mode replaces `toggle-read-only', which is now obsolete.
167
168 +++
169 ** Emacs now generates backtraces on fatal errors.
170 On encountering a fatal error, Emacs now outputs a textual description
171 of the fatal signal, and a short backtrace on platforms like glibc
172 that support backtraces.
173
174 ---
175 ** If your Emacs was built from a bzr checkout, the new variable
176 `emacs-bzr-version' contains information about the bzr revision used.
177
178 +++
179 ** New variable `create-lockfiles' specifies usage of lockfiles.
180 It defaults to t. Changing it to nil inhibits the creation of lock
181 files (use this with caution).
182
183 +++
184 ** Using "unibyte: t" in Lisp source files is obsolete.
185 Use "coding: raw-text" instead.
186
187 +++
188 ** Setting `enable-remote-dir-locals' to non-nil allows directory
189 local variables on remote hosts.
190
191 ---
192 ** The entry for PCL-CVS has been removed from the Tools menu.
193 The PCL-CVS commands are still available via the keyboard.
194
195 ** Internationalization changes
196 ---
197 *** New language environment: Persian.
198 ---
199 *** New input method `vietnamese-vni'.
200
201 ** Nextstep (GNUstep / Mac OS X) port changes
202 ---
203 *** Fullscreen and frame parameter fullscreen is supported.
204 ---
205 *** A file dialog is used for open/save operations initiated from the
206 menu/toolbar.
207
208 \f
209 * Editing Changes in Emacs 24.3
210
211 ** Navigation command changes
212 +++
213 *** New binding `M-g c' for `goto-char'.
214 +++
215 *** New binding `M-g TAB' for `move-to-column'.
216 +++
217 *** `M-g TAB' (`move-to-column') prompts for a column number if called
218 interactively with no prefix arg. Previously, it moved to column 1.
219
220 ** Search and Replace changes
221 +++
222 *** Non-regexp Isearch now performs "lax" space matching.
223 Each sequence of spaces in the supplied search string may match any
224 sequence of one or more whitespace characters, as specified by the
225 variable `search-whitespace-regexp'. (This variable is also used by a
226 similar existing feature for regexp Isearch).
227 +++
228 *** New Isearch command `M-s SPC' toggles lax space matching.
229 This applies to both ordinary and regexp Isearch.
230 +++
231 *** New option `replace-lax-whitespace'.
232 If non-nil, `query-replace' uses flexible whitespace matching too.
233 The default is nil.
234 +++
235 *** Global `M-s _' starts a symbol (identifier) incremental search,
236 and `M-s _' in Isearch toggles symbol search mode.
237 `M-s c' in Isearch toggles search case-sensitivity.
238
239 +++
240 ** `C-x 8 RET' is now bound to `insert-char', which is now a command.
241 `ucs-insert' is now an obsolete alias for `insert-char'.
242
243 ---
244 ** The `z' key no longer has a binding in most special modes.
245 It used to be bound to `kill-this-buffer', but `z' is too easy to
246 accidentally type.
247
248 +++
249 ** New option `delete-trailing-lines' specifies whether
250 M-x delete-trailing-whitespace should delete trailing lines at the end
251 of the buffer. It defaults to t.
252
253 ** Register changes
254 +++
255 *** `C-x r +' is now overloaded to invoke `append-to-register.
256 +++
257 *** New option `register-separator' specifies the register containing
258 the text to put between collected texts for use with M-x
259 append-to-register and M-x prepend-to-register.
260
261 +++
262 ** `C-u M-=' now counts lines/words/characters in the entire buffer.
263
264 +++
265 ** New command `C-x r M-w' (copy-rectangle-as-kill).
266 It copies the region-rectangle as the last rectangle kill.
267
268 +++
269 ** New option `yank-handled-properties' allows processing of text
270 properties on yanked text, in more ways that are more general than
271 just removing them, as done by `yank-excluded-properties'.
272
273 \f
274 * Changes in Specialized Modes and Packages in Emacs 24.3
275
276 ** Apropos
277 ---
278 *** The faces used by Apropos are now directly customizable.
279 These faces are named `apropos-symbol', `apropos-keybinding', and so on;
280 see the `apropos' Custom group for details.
281 ---
282 *** The old options whose values specified faces to use were removed
283 (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
284
285 ** Buffer Menu
286 This package has been rewritten to use Tabulated List mode.
287 ---
288 *** Option `Buffer-menu-buffer+size-width' is now obsolete.
289 Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
290
291 ** Calendar
292
293 +++
294 *** You can customize the header text that appears above each calendar month.
295 See the variable `calendar-month-header'.
296
297 +++
298 *** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
299
300 +++
301 *** The calendars produced by cal-html include holidays.
302 Customize `cal-html-holidays' to change this.
303
304 ** CL
305
306 +++
307 *** CL's main entry is now (require 'cl-lib).
308 `cl-lib' is like the old `cl' except that it uses the namespace cleanly,
309 i.e. all its definitions have the "cl-" prefix (and internal definitions use
310 the "cl--" prefix).
311
312 If `cl' provided a feature under the name `foo', then `cl-lib' provides it
313 under the name `cl-foo' instead, with the exceptions of the few definitions
314 that had to use `foo*' to avoid conflicts with pre-existing Elisp entities,
315 which have not been renamed to `cl-foo*' but just `cl-foo'.
316
317 The old `cl' is now deprecated and is mainly just a bunch of aliases that
318 provide the old non-prefixed names. Some exceptions are listed below.
319
320 +++
321 *** `cl-flet' is not like `flet' (which is deprecated).
322 Instead it obeys the behavior of Common-Lisp's `flet'.
323
324 +++
325 *** `cl-labels' is slightly different from `labels'.
326 The difference is that it relies on the `lexical-binding' machinery (as opposed
327 to the `lexical-let' machinery used previously) to capture definitions in
328 closures, so such closures will only work if `lexical-binding' is in use.
329
330 +++
331 *** `cl-letf' is not exactly like `letf'.
332 The only difference is in details that relate to some deprecated usage
333 of `symbol-function' in place forms.
334
335 +++
336 *** `progv' was rewritten to use the `let' machinery.
337 A side effect is that vars without corresponding value are bound to nil
338 rather than making them unbound.
339
340 +++
341 *** The following methods of extending `setf' are obsolete
342 (use features from gv.el instead):
343 `define-modify-macro' (use `gv-letplace')
344 `defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
345 `define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
346 `get-setf-method' no longer exists (see "Incompatible Lisp Changes")
347
348 +++
349 ** New compilation option `compilation-always-kill'.
350
351 ** Customize
352 ---
353 *** `custom-reset-button-menu' now defaults to t.
354 ---
355 *** Non-option variables are never matched in `customize-apropos' and
356 `customize-apropos-options' (i.e. the prefix argument does nothing for
357 these commands now).
358
359 ---
360 ** `desktop-path' no longer includes the "." directory.
361 Desktop files are now located in ~/.emacs.d by default.
362
363 ** D-Bus
364
365 +++
366 *** New variables `dbus-compiled-version' and `dbus-runtime-version'.
367
368 +++
369 *** The D-Bus object manager interface is implemented.
370
371 +++
372 *** Variables of type :(u)int32 and :(u)int64 accept floating points,
373 if their value does not fit into Emacs's integer range.
374
375 +++
376 *** The function `dbus-call-method' works non-blocking now, it can be
377 interrupted by C-g. `dbus-call-method-non-blocking' is obsolete.
378
379 +++
380 *** Signals can be sent also as unicast message.
381
382 +++
383 *** The argument list of `dbus-register-signal' has been extended,
384 according to the new match rule types of D-Bus. See the manual for
385 details.
386
387 +++
388 *** `dbus-init-bus' supports private connections.
389
390 +++
391 *** There is a new function `dbus-setenv'.
392
393 ** Diff mode
394
395 ---
396 *** Changes are now highlighted using the same color scheme as in
397 modern VCSes. Deletions are displayed in red (new faces
398 `diff-refine-removed' and `smerge-refined-removed', and new definition
399 of `diff-removed'), insertions in green (new faces `diff-refine-added'
400 and `smerge-refined-added', and new definition of `diff-added').
401
402 ---
403 *** The variable `diff-use-changed-face' defines whether to use the
404 face `diff-changed', or `diff-removed' and `diff-added' to highlight
405 changes in context diffs.
406
407 +++
408 *** The new command `diff-delete-trailing-whitespace' removes trailing
409 whitespace introduced by a diff.
410
411 ** Dired
412 +++
413 *** `dired-do-async-shell-command' executes each file sequentially
414 if the command ends in `;' (when operating on multiple files).
415 Otherwise, it executes the command on each file in parallel.
416 ---
417 *** Typing M-n in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
418 `dired-do-chown', `dired-do-touch' pulls the file attributes of the
419 file at point.
420 +++
421 *** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
422 `DEL' (`dired-unmark-backward'), `d' (`dired-flag-file-deletion')
423 mark/unmark/flag all files in the active region.
424 +++
425 *** The minibuffer default for `=' (`dired-diff) has changed.
426 It is now the backup file for the file at point, if one exists.
427 In Transient Mark mode the default is the file at the active mark.
428 +++
429 *** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
430 The global binding for `M-=', `count-words-region' is in effect.
431
432 ---
433 ** Ediff now uses the same color scheme as Diff mode.
434
435 ** ERC
436
437 +++
438 *** New module "notifications", which can send a notification when you
439 receive a private message or your nickname is mentioned.
440
441 +++
442 *** ERC will look up server/channel names via auth-source and use any
443 channel keys found.
444
445 +++
446 *** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
447 only applies to messages sent by lurkers.
448
449 +++
450 ** Flymake uses fringe bitmaps to indicate errors and warnings.
451 See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
452 `flymake-warning-bitmap'.
453
454 ---
455 ** Follow mode no longer works by using advice.
456 The option `follow-intercept-processes' has been removed.
457
458 ---
459 ** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
460 specifying URL types that should be converted to remote file names at
461 the FFAP prompt. The default is now '("ftp").
462
463 ---
464 ** New Ibuffer `derived-mode' filter, bound to `/ M'.
465 The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
466
467 ---
468 ** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
469
470 +++
471 ** New option `mouse-avoidance-banish-position' specifies where the
472 `banish' mouse avoidance setting moves the mouse.
473
474 +++
475 ** notifications.el supports now version 1.2 of the Notifications API.
476 The function `notifications-get-capabilities' returns the supported
477 server properties.
478
479 ---
480 ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
481 closing brackets to be aligned with the line of the opening bracket.
482
483 ---
484 ** In Proced mode, new command `proced-renice' renices marked processes.
485
486 ---
487 ** Python mode
488
489 A new version of python.el, which provides several new features, including:
490 per-buffer shells, better indentation, Python 3 support, and improved
491 shell-interaction compatible with iPython (and virtually any other
492 text based shell).
493
494 *** Some user options have been replaced/renamed:
495 Old defcustom: | New defcustom:
496 python-indent | python-indent-offset
497 python-guess-indent | python-indent-guess-indent-offset
498 python-pdbtrack-do-tracking-p | python-pdbtrack-activate
499 python-use-skeletons | python-skeleton-autoinsert
500
501 *** Some user options have been removed:
502
503 **** `python-indent-string-contents': Strings are never indented.
504
505 **** `python-honour-comment-indentation':
506 Comments are never considered as indentation markers themselves.
507
508 **** `python-continuation-offset': Indentation is automatically
509 calculated in a pep8 compliant way depending on the context.
510
511 **** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
512 Have no direct mapping as the shell interaction is completely different.
513
514 **** `python-python-command', `python-jython-command':
515 Replaced by `python-shell-interpreter'.
516
517 **** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
518 `python-pdbtrack-minor-mode-string', `python-source-modes':
519 No longer relevant.
520
521 *** Some commands have been replaced:
522 Old command | New command
523 python-insert-class | python-skeleton-class
524 python-insert-def | python-skeleton-def
525 python-insert-for | python-skeleton-for
526 python-insert-if | python-skeleton-if
527 python-insert-try/except | python-skeleton-try
528 python-insert-try/finally | python-skeleton-try
529 python-insert-while | python-skeleton-while
530 python-find-function | python-nav-jump-to-defun
531 python-next-statement | python-nav-forward-sentence
532 python-previous-statement | python-nav-backward-sentence
533 python-beginning-of-defun-function | python-nav-beginning-of-defun
534 python-end-of-defun-function | python-nav-end-of-defun
535 python-send-buffer | python-shell-send-buffer
536 python-send-defun | python-shell-send-defun
537 python-send-region | python-shell-send-region
538 python-send-region-and-go | Emulate with python-shell-send-region and
539 python-shell-switch-to-shell
540 python-send-string | python-shell-send-string
541 python-switch-to-python | python-shell-switch-to-shell
542 python-describe-symbol | python-eldoc-at-point
543
544 ---
545 ** reStructuredText mode
546
547 *** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
548 fontification, comment handling, and customization have all been revised
549 and improved.
550
551 *** Support for `imenu' and `which-function-mode'.
552
553 *** The reStructuredText syntax is more closely covered.
554 Sphinx support has been improved.
555
556 *** `rst-insert-list' inserts new list or continues existing lists.
557
558 *** A negative prefix argument always works for `rst-adjust'.
559
560 *** The window configuration is reset after displaying a TOC.
561
562 *** The constant `rst-version' describes the rst.el package version.
563
564 ---
565 ** Shell Script mode
566
567 *** Pairing of parens/quotes uses electric-pair-mode instead of skeleton-pair.
568
569 *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
570
571 *** `sh-use-smie' lets you choose a new indentation and navigation code.
572
573 +++
574 ** New option `async-shell-command-buffer' specifies the buffer to use
575 for a new asynchronous `shell-command' when the default output buffer
576 `*Async Shell Command*' is already in use.
577
578 ---
579 ** SQL mode has a new option `sql-db2-escape-newlines'.
580 If non-nil, newlines sent to the command interpreter will be escaped
581 by a backslash. The default does not escape the newlines and assumes
582 that the sql statement will be terminated by a semicolon.
583
584 ** Tabulated List and packages derived from it
585 +++
586 *** New command `tabulated-list-sort', bound to `S', sorts the column
587 at point, or the Nth column if a numeric prefix argument is given.
588
589 ** Term
590 +++
591 *** The variables `term-default-fg-color' and `term-default-bg-color' are
592 now deprecated in favor of the customizable face `term'.
593 +++
594 *** You can customize how to display ANSI terminal colors and styles
595 by customizing the corresponding `term-color-<COLOR>',
596 `term-color-underline' and `term-color-bold' faces.
597
598 ** Tramp
599 +++
600 *** The syntax has been extended in order to allow ad-hoc proxy definitions.
601 See the manual for details.
602 +++
603 *** Remote processes are now supported also on remote Windows host.
604
605 ** URL
606 +++
607 *** Structs made by `url-generic-parse-url' have nil `attributes' slot.
608 Previously, this slot stored semicolon-separated attribute-value pairs
609 appended to some imap URLs, but this is not compatible with RFC 3986.
610 So now the `filename' slot stores the entire path and query components
611 and the `attributes' slot is always nil.
612 +++
613 *** New function `url-encode-url' for encoding a URI string.
614 The `url-retrieve' function now uses this to encode its URL argument,
615 in case that is not properly encoded.
616
617 ---
618 ** VHDL mode
619
620 *** The free software compiler GHDL is supported (and now the default).
621
622 *** Support for the VHDL-AMS packages has been added/updated.
623
624 *** Updated to the 2002 revision of the VHDL standard.
625
626 *** Accepts \r and \f as whitespace.
627
628 +++
629 ** `which-func-modes' now defaults to t, so Which Function mode, when
630 enabled, applies to all applicable major modes.
631
632 ---
633 ** winner-mode-hook now runs when the mode is disabled, as well as when it is
634 enabled.
635
636 +++
637 ** Hooks renamed to avoid obsolete "-hooks" suffix:
638 *** semantic-lex-reset-hooks -> semantic-lex-reset-functions
639 *** semantic-change-hooks -> semantic-change-functions
640 *** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
641 *** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
642 *** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
643 *** semanticdb-save-database-hooks -> semanticdb-save-database-functions
644 *** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
645 *** rcirc-sentinel-hooks -> rcirc-sentinel-functions
646 *** rcirc-receive-message-hooks -> rcirc-receive-message-functions
647 *** rcirc-activity-hooks -> rcirc-activity-functions
648 *** rcirc-print-hooks -> rcirc-print-functions
649 *** dbus-event-error-hooks -> dbus-event-error-functions
650 *** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
651 *** checkdoc-style-hooks -> checkdoc-style-functions
652 *** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
653 *** archive-extract-hooks -> archive-extract-hook
654 *** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
655 *** hfy-post-html-hooks -> hfy-post-html-hook
656 *** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
657 *** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
658 *** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
659 *** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
660
661 ** Obsolete packages:
662 +++
663 *** assoc.el
664 In most cases, assoc+member+push+delq work just as well.
665 And in any case it's just a terrible package: ugly semantics, terrible
666 inefficiency, and not namespace-clean.
667 ---
668 *** bruce.el
669 +++
670 *** cust-print.el
671 ---
672 *** ledit.el
673 ---
674 *** mailpost.el
675 +++
676 *** mouse-sel.el
677 ---
678 *** patcomp.el
679
680 \f
681 * Incompatible Lisp Changes in Emacs 24.3
682
683 +++
684 ** set-buffer-multibyte now signals an error in narrowed buffers.
685
686 +++
687 ** (random) by default now returns a different random sequence in
688 every Emacs run. Use (random S), where S is a string, to set the
689 random seed to a value based on S, in order to get a repeatable
690 sequence in later calls.
691
692 ---
693 ** The function `x-select-font' can return a font spec, instead of a
694 font name as a string. Whether it returns a font spec or a font name
695 depends on the graphical library.
696
697 +++
698 ** If the NEWTEXT arg to `replace-match' contains a substring "\?",
699 that substring is inserted literally even if the LITERAL arg is
700 non-nil, instead of causing an error to be signaled.
701
702 +++
703 ** Docstrings starting with `*' no longer indicate user options.
704 Only variables defined using `defcustom' are considered user options.
705 The function `user-variable-p' is now an obsolete alias for
706 `custom-variable-p'.
707
708 +++
709 ** The return values of `defalias', `defun' and `defmacro' have changed,
710 and are now undefined. For backwards compatibility, defun and
711 defmacro currently return the name of the newly defined function/macro
712 but this should not be relied upon.
713
714 ---
715 ** `face-spec-set' no longer sets frame-specific attributes when the
716 third argument is a frame (that usage was obsolete since Emacs 22.2).
717
718 +++
719 ** The arguments of `dbus-register-signal' are no longer just strings,
720 but keywords or keyword-string pairs. The old argument list will
721 still be supported for Emacs 24.x.
722
723 +++
724 ** The CL package's `get-setf-method' function no longer exists.
725 Generalized variables are now part of core Emacs Lisp, and implemented
726 differently to the way cl.el used to do it. It is not possible to
727 define a compatible replacement for `get-setf-method'. See the file
728 gv.el for internal details of the new implementation.
729
730 ** Spelling changes.
731 Some Lisp symbols have been renamed to avoid problems with spelling
732 that is incorrect or inconsistent with how Emacs normally spells a word.
733
734 ---
735 *** Renamed functions
736
737 **** hangul-input-method-inactivate -> hangul-input-method-deactivate
738 **** inactivate-input-method -> deactivate-input-method
739 **** quail-inactivate -> quail-deactivate
740 **** robin-inactivate -> robin-deactivate
741 **** viper-inactivate-input-method -> viper-deactivate-input-method
742 **** viper-inactivate-input-method-action ->
743 viper-deactivate-input-method-action
744 **** ucs-input-inactivate -> ucs-input-deactivate
745
746 ---
747 *** Renamed hooks
748 The old hooks are still supported for backward compatibility, but they
749 are deprecated and will be removed eventually.
750 **** input-method-inactivate-hook -> input-method-deactivate-hook
751 **** robin-inactivate-hook -> robin-deactivate-hook
752 **** quail-inactivate-hook -> quail-deactivate-hook
753
754 ---
755 *** Renamed Lisp variables
756 **** follow-deactive-menu -> follow-inactive-menu
757 **** inactivate-current-input-method-function ->
758 deactivate-current-input-method-function
759
760 +++
761 ** Some obsolete functions, variables, and faces have been removed:
762 *** `last-input-char', `last-command-char', `unread-command-char'
763 *** `facemenu-unlisted-faces'
764 *** `rmail-decode-mime-charset'
765 *** `iswitchb-read-buffer'
766 *** `sc-version', `sc-submit-bug-report'
767 *** `set-char-table-default'
768 *** `string-to-sequence' (use `string-to-list' or `string-to-vector')
769 *** `compile-internal'
770 *** `modeline'
771 *** `mode-line-inverse-video'
772 *** `follow-mode-off-hook'
773 *** `cvs-commit-buffer-require-final-newline'
774 (use `log-edit-require-final-newline' instead)
775 *** `cvs-changelog-full-paragraphs'
776 (use `log-edit-changelog-full-paragraphs' instead)
777 *** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
778 *** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
779 *** `vc-master-templates' (use `vc-handled-backends' instead)
780 *** `vc-checkout-carefully'
781
782 \f
783 * Lisp changes in Emacs 24.3
784
785 ** New sampling-based Elisp profiler.
786 Try M-x profiler-start, do some work, and then call M-x profiler-report.
787 When finished, use M-x profiler-stop. The sampling rate can be based on
788 CPU time (only supported on some systems) or memory allocations.
789
790 +++
791 ** CL-style generalized variables are now in core Elisp.
792 `setf' is autoloaded; `push' and `pop' accept generalized variables.
793 You can define your own generalized variables using `gv-define-simple-setter',
794 `gv-define-setter', etc.
795
796 +++
797 ** `defun' also accepts a (declare DECLS) form, like `defmacro'.
798 The interpretation of the DECLS is determined by `defun-declarations-alist'.
799
800 ** Minibuffer
801 +++
802 *** `read-regexp' has a new argument HISTORY; the first argument PROMPT
803 of `read-regexp' accepts a string ending with a colon and space, and its
804 second argument DEFAULTS can be a list of strings accessible via M-n
805 in the minibuffer ahead of other hard-coded useful regexp-related values.
806 More commands use `read-regexp' now to read their regexp arguments.
807
808 ** Completion
809
810 *** New function `completion-table-with-quoting' to handle completion
811 in the presence of quoting, such as file completion in shell buffers.
812
813 *** New function `completion-table-subvert' to use an existing completion
814 table, but with a different prefix.
815
816 ** Debugger changes
817
818 +++
819 *** New error type and new function `user-error'.
820 These do not trigger the debugger.
821
822 +++
823 *** New option `debugger-bury-or-kill', saying what to do with the
824 debugger buffer when exiting debug.
825
826 +++
827 *** Set `debug-on-message' to enter the debugger when a certain
828 message is displayed in the echo area. This can be useful when trying
829 to work out which code is doing something.
830 ---
831 *** New var `inhibit-debugger', automatically set to prevent accidental
832 recursive invocations.
833
834 ** Window changes
835 +++
836 *** The functions get-lru-window, get-mru-window and get-largest-window
837 now accept a third argument to avoid choosing the selected window.
838 +++
839 *** Additional values recognized for option `window-combination-limit'.
840
841 *** New macro `with-temp-buffer-window'.
842
843 *** `temp-buffer-resize-mode' no longer resizes windows that have been
844 reused.
845
846 *** New function `fit-frame-to-buffer' and new options
847 `fit-frame-to-buffer' and `fit-frame-to-buffer-bottom-margin'.
848 +++
849 *** New option switch-to-buffer-preserve-window-point to restore a
850 window's point when switching buffers.
851 +++
852 *** New display action functions `display-buffer-below-selected',
853 and `display-buffer-in-previous-window'.
854
855 *** New display action alist entry `inhibit-switch-frame', if non-nil,
856 tells display action functions to avoid changing which frame is
857 selected.
858
859 *** New display action alist entry `pop-up-frame-parameters', if
860 non-nil, specifies frame parameters to give any newly-created frame.
861 +++
862 *** New display action alist entry `previous-window', if non-nil,
863 specifies window to reuse in `display-buffer-in-previous-window'.
864 +++
865 *** New display action alist entries `window-height' and `window-width'
866 to specify size of new window created by `display-buffer'.
867
868 *** The following variables are obsolete, as they can be replaced by
869 appropriate entries in the `display-buffer-alist' function introduced
870 in Emacs 24.1:
871 +++
872 **** `display-buffer-reuse-frames'
873 +++
874 **** `special-display-regexps'
875 +++
876 **** `special-display-frame-alist'
877 +++
878 **** `special-display-buffer-names'
879 +++
880 **** `special-display-function'
881 +++
882 **** `display-buffer-function'
883 ---
884 **** `dired-shrink-to-fit'
885
886 ** Time
887 ---
888 *** `current-time-string' no longer requires that its argument's year
889 must be in the range 1000..9999. It now works with any year supported
890 by the underlying C implementation.
891 +++
892 *** `current-time' now returns extended-format time stamps
893 (HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
894 PSEC is typically a multiple of 1000 on current machines. Other
895 functions that use this format, such as file-attributes and
896 format-time-string, have been changed accordingly. Old-format time
897 stamps are still accepted.
898 ---
899 *** The format of timers in timer-list and timer-idle-list is now
900 [TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
901 The PSECS slot is new, and uses picosecond resolution. It can be
902 accessed via the new timer--psecs accessor.
903 +++
904 *** Last-modified time stamps in undo lists now are of the form
905 (t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
906
907 +++
908 ** Floating point functions now always return special values like NaN,
909 instead of signaling errors, if given invalid args, e.g. (log -1.0).
910 Previously, they returned NaNs on some platforms but signaled errors
911 on others. The affected functions are acos, asin, tan, exp, expt,
912 log, log10, sqrt, and mod.
913
914 ** Interpreted files are eagerly macro-expanded during load.
915 This can significantly speed up execution of non-byte-compiled code,
916 but can also bump into harmless and previously unnoticed cyclic
917 dependencies. These should not be fatal: they will simply cause the
918 macro-calls to be left for later expansion (as before), but will also
919 result in a warning ("Eager macro-expansion skipped due to cycle")
920 describing the cycle.
921
922 ** Miscellaneous new functions:
923 +++
924 *** `autoloadp' tests if its argument is an autoloaded object.
925 +++
926 *** `autoload-do-load' performs the autoloading operation.
927 +++
928 *** `buffer-narrowed-p' tests if the buffer is narrowed.
929 +++
930 *** `file-name-base' returns a file name sans directory and extension.
931 +++
932 *** `function-get' fetches a function property, following aliases.
933 +++
934 *** `posnp' tests if an object is a `posn'.
935 *** `set-temporary-overlay-map' sets up a temporary overlay map.
936 +++
937 *** `system-users' returns the user names on the system.
938 +++
939 *** `system-groups' returns the group names on the system.
940 +++
941 *** `tty-top-frame' returns the topmost frame of a text terminal.
942
943 +++
944 ** New macros `setq-local' and `defvar-local'.
945
946 +++
947 ** New fringe bitmap `exclamation-mark'.
948
949 ** Face underlining can now use a wave.
950 See the "Face Attributes" section of the Elisp manual.
951
952 ** The following functions and variables are obsolete:
953 ---
954 *** `automount-dir-prefix' (use `directory-abbrev-alist')
955 +++
956 *** `buffer-has-markers-at'
957 ---
958 *** `macro-declaration-function' (use `macro-declarations-alist')
959 ---
960 *** `window-system-version' (provides no useful information)
961 ---
962 *** `dired-pop-to-buffer' (use `dired-mark-pop-up')
963 ---
964 *** `query-replace-interactive'
965 ---
966 *** `font-list-limit' (has had no effect since Emacs < 23)
967
968 \f
969 * Changes in Emacs 24.3 on non-free operating systems
970
971 ---
972 ** Cygwin builds can use the native MS Windows user interface.
973 Pass --with-w32 to configure. The default remains the X11 interface.
974
975 ** Two new functions are available in Cygwin builds:
976 `cygwin-convert-path-from-windows' and `cygwin-convert-path-to-windows'.
977 These functions allow Lisp code to access the Cygwin file-name mapping
978 machinery to convert between Cygwin and Windows-native file names.
979
980 ** When invoked with the -nw switch to run on the Windows text-mode terminal,
981 Emacs now supports mouse highlight, help-echo (in the echo area), and
982 `mouse-autoselect-window'.
983
984 +++
985 ** On MS Windows Vista and later Emacs now supports symbolic links.
986
987 +++
988 ** On MS Windows, you can pass --without-libxml2 to configure.bat to omit
989 support for libxml2, even if its presence is detected.
990
991 ---
992 ** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
993
994 ---
995 ** On Mac OS X, configure no longer automatically adds the Fink /sw
996 directories to the search path. You must add them yourself if you want them.
997
998 \f
999 * Changes in Emacs 24.2
1000
1001 ** This is mainly a bug-fix release.
1002
1003 \f
1004 * Installation Changes in Emacs 24.1
1005
1006 ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
1007 to configure. Note that other libraries used by Emacs, RSVG and GConf,
1008 also depend on Gtk+. You can disable them with --without-rsvg and
1009 --without-gconf.
1010
1011 ** Emacs can be compiled with GnuTLS support.
1012 This happens by default if a suitably recent version of the library is
1013 found at build time. To prevent this, use the configure option
1014 `--without-gnutls'. See below for GnuTLS features.
1015
1016 ** Emacs can be compiled with SELinux support.
1017 This happens by default if a suitably recent version of the library is
1018 found at build time. To prevent this, use the configure option
1019 `--without-selinux'. See below for SELinux features.
1020
1021 ** Emacs can be compiled with ImageMagick support.
1022 This happens by default if a suitably recent version of the library is
1023 found at build time. To prevent this, use the configure option
1024 `--without-imagemagick'. See below for ImageMagick features.
1025 This feature is not available for the Nextstep or MS ports.
1026
1027 ** Emacs can be compiled with libxml2 support.
1028 This happens by default if a suitably recent version of the library is
1029 found at build time. To prevent this, use the configure option
1030 `--without-xml2'. See below for libxml2 features.
1031
1032 ** By default, the installed Info and man pages are compressed.
1033 You can disable this by configuring --without-compress-info.
1034
1035 ** New configure option --with-wide-int.
1036 With it, Emacs integers typically have 62 bits, even on 32-bit machines.
1037 On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
1038 to about 2 GiB.
1039
1040 ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
1041 These provide no new functionality, they just remove the need to edit
1042 lib-src/Makefile by hand in order to use the associated features.
1043
1044 ** New configure option --enable-use-lisp-union-type.
1045 This is only useful for Emacs developers to debug certain types of bugs.
1046 This is not a new feature; only the configure flag is new.
1047
1048 ** The standalone programs digest-doc and sorted-doc are removed.
1049 Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
1050
1051 ** The standalone program `fakemail' is removed.
1052 If you need it, feedmail.el provides a superset of the functionality.
1053
1054 \f
1055 * Startup Changes in Emacs 24.1
1056
1057 ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
1058 command line arguments, and the EMACS_UNIBYTE environment variable, no
1059 longer have any effect. (They were declared obsolete in Emacs 23.)
1060
1061 ** New command line option `--no-site-lisp' removes site-lisp directories
1062 from load-path. -Q now implies this. This option does not affect the
1063 EMACSLOADPATH environment variable (and hence has no effect for
1064 Nextstep builds).
1065
1066 \f
1067 * Changes in Emacs 24.1
1068
1069 ** Completion
1070
1071 *** Many packages now use the `completion-at-point' command,
1072 rather than implementing separate completion commands.
1073
1074 *** `completion-at-point' now handles tags and semantic completion.
1075
1076 *** Completion in a non-minibuffer now tries to detect the end of completion
1077 and pops down the *Completions* buffer accordingly.
1078
1079 *** New option `completion-cycle-threshold' allows completion cycling.
1080
1081 *** New option `completion-category-overrides' for overriding the
1082 default completion style in certain circumstances.
1083
1084 *** New completion style `substring'.
1085
1086 *** Completion of buffer names uses `substring' completion by default.
1087
1088 *** The option `widget-complete-field' has been removed.
1089
1090 ** Mail changes
1091
1092 *** The first time you try sending mail, Emacs asks for a mail method.
1093 This is implemented by a new default for `send-mail-function', which
1094 is `sendmail-query-once'. This offers to use the smtpmail package, or
1095 to use the old defaults relying on external mail facilities
1096 (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
1097 `mailclient-send-it' on Windows).
1098
1099 *** Typing C-c m in the buffer made by M-x report-emacs-bug transfers
1100 the report to your desktop's preferred mail client, if there is one.
1101 This uses either the "xdg-email" utility, or Mac OS's "open" command.
1102
1103 *** See Changes in Specialized Modes and Packages for SMTPmail changes
1104 and Mail mode changes
1105
1106 ** Emacs server and client changes
1107
1108 *** New option `server-port' specifies the port for TCP Emacs servers.
1109
1110 *** New emacsclient argument -q/--quiet suppresses some status messages.
1111
1112 *** New emacsclient argument --frame-parameters specifies the frame
1113 parameters of any newly-created graphical frame.
1114
1115 *** If emacsclient shuts down due to Emacs signaling an error,
1116 its exit status is 1.
1117
1118 *** New emacsclient argument --parent-id ID.
1119 This opens a client frame in parent X window ID, via XEmbed, similar
1120 to the --parent-id argument to Emacs.
1121
1122 ** Internationalization changes
1123
1124 *** Emacs now supports display and editing of bidirectional text.
1125 Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
1126 displayed in the correct visual order as expected by users of those
1127 scripts. The display reordering is a "full bidirectionality" class
1128 implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
1129 with no RTL text should look exactly the same as before.
1130
1131 **** New buffer-local variable `bidi-display-reordering'.
1132 To disable display reordering in a buffer, change this to nil.
1133
1134 **** New buffer-local variable `bidi-paragraph-direction'.
1135 If nil (the default), Emacs determines the base direction of each
1136 paragraph from its text, as specified by the UBA. Setting the value
1137 to `right-to-left' or `left-to-right' forces a base direction on each
1138 paragraph.
1139
1140 Paragraphs with right-to-left base direction are displayed starting at
1141 the right window edge.
1142
1143 *** Enhanced support for characters with no glyphs in available fonts,
1144 or, on text terminals, characters that cannot be encoded by the
1145 terminal coding system. The new option `glyphless-char-display-control'
1146 specifies how to display them: as a hexadecimal code in a box, a thin
1147 1-pixel space, an empty box, etc.
1148
1149 *** New input methods for Farsi and Bulgarian
1150 (farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
1151
1152 *** `nobreak-char-display' now also highlights Unicode hyphen chars
1153 (U+2010 and U+2011).
1154
1155 *** New Hebrew translation of the Emacs Tutorial.
1156 Type `C-u C-h t' to choose it in case your language setup doesn't
1157 automatically select it.
1158
1159 ** An Emacs Lisp package manager is now included.
1160 This is a convenient way to download and install additional packages,
1161 from a package repository at http://elpa.gnu.org.
1162
1163 *** M-x list-packages shows a list of packages, which can be
1164 selected for installation.
1165
1166 *** New command `describe-package', bound to `C-h P'.
1167
1168 *** By default, all installed packages are loaded automatically when
1169 Emacs starts up. To disable this, set `package-enable-at-startup' to
1170 nil. To specify the packages to load, customize `package-load-list'.
1171
1172 ** Custom theme changes
1173
1174 *** New command `M-x customize-themes', which provides a convenient
1175 interface for enabling and disabling Custom themes.
1176
1177 *** New option `custom-theme-load-path' is the load path for themes.
1178 Emacs no longer looks for Custom themes in `load-path'. The default
1179 value of `custom-theme-load-path' says to look for themes in
1180 `custom-theme-directory', followed by a subdirectory of
1181 `data-directory' named "themes/", which contains a small selection of
1182 built-in Custom themes.
1183
1184 *** New option `custom-safe-themes' records known-safe theme files.
1185 If a theme is not in this list, Emacs queries before loading it, and
1186 offers to save the theme to `custom-safe-themes' automatically. By
1187 default, all themes included in Emacs are treated as safe.
1188
1189 ** Improved GTK integration
1190
1191 *** GTK scroll-bars are now placed on the right by default.
1192 The function `set-scroll-bar-mode' can change this.
1193
1194 *** GTK tool bars can have just text, just images or images and text.
1195 Customize `tool-bar-style' to choose the style. On a Gnome desktop,
1196 the default is taken from desktop settings.
1197
1198 *** GTK tool bars can be placed on any edge of the frame.
1199 The frame-parameter tool-bar-position controls this. It takes the
1200 values top, left, right or bottom. The Options => Show/Hide menu has
1201 entries for this.
1202
1203 *** The default colors for selected text (the `region' face) are taken
1204 from the GTK theme when Emacs is built with GTK.
1205
1206 *** Emacs uses GTK tooltips by default if built with GTK.
1207 You can disable this by changing `x-gtk-use-system-tooltips' to nil.
1208
1209 ** Graphical interface changes
1210
1211 *** On graphical displays, the mode-line no longer ends in dashes.
1212 Also, the first dash (which does not indicate anything) is just
1213 displayed as a space.
1214
1215 *** `menu-bar-select-buffer-function' lets you choose another operation
1216 instead of `switch-to-buffer' when selecting an item in the Buffers menu.
1217
1218 *** Lucid menus and dialogs can display antialiased fonts if Emacs is
1219 built with Xft. These fonts can be set via X resources, for example:
1220 Emacs.pane.menubar.font: Courier-12
1221
1222 ** Exiting changes
1223
1224 *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
1225 or if it receives a SIGINT signal in batch mode.
1226
1227 *** `kill-emacs-hook' is now also run in batch mode.
1228 Third-party code which adds to `kill-emacs-hook' should check if they
1229 do the right thing in batch mode.
1230
1231 ** Scrolling changes
1232
1233 *** New scrolling commands `scroll-up-command' and `scroll-down-command'
1234 (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
1235 of buffer at first key-press (instead they move to top/bottom of buffer)
1236 when `scroll-error-top-bottom' is non-nil.
1237
1238 *** New option `scroll-error-top-bottom' (see above).
1239
1240 *** New scrolling commands `scroll-up-line' and `scroll-down-line'
1241 scroll a line instead of full screen.
1242
1243 *** New property `scroll-command' should be set on a command's symbol to
1244 define it as a scroll command affected by `scroll-preserve-screen-position'.
1245
1246 *** If you customize `scroll-conservatively' to a value greater than 100,
1247 Emacs will never recenter point in the window when it scrolls due to
1248 cursor motion commands or commands that move point (e.f., `M-g M-g').
1249 Previously, you needed to use `most-positive-fixnum' as the value of
1250 `scroll-conservatively' to achieve the same effect.
1251
1252 *** "Aggressive" scrolling now honors the scroll margins.
1253 If you customize `scroll-up-aggressively' or
1254 `scroll-down-aggressively' and move point off the window, Emacs now
1255 scrolls the window so as to avoid positioning point inside the scroll
1256 margin.
1257
1258 ** Basic SELinux support has been added.
1259 This requires Emacs to be linked with libselinux at build time.
1260
1261 *** Emacs preserves the SELinux file context when backing up.
1262 Also, the function `copy-file' has an extra optional argument for
1263 preserving SELinux context, and the return value of `backup-buffer'
1264 now includes the SELinux context.
1265
1266 *** New functions `file-selinux-context' and `set-file-selinux-context'
1267 get and set the SELinux context of a file.
1268
1269 ** Trash changes
1270
1271 *** `delete-by-moving-to-trash' now only affects commands that specify
1272 trashing. This avoids inadvertently trashing temporary files.
1273
1274 *** Calling `delete-file' or `delete-directory' with a prefix argument
1275 now forces true deletion, regardless of `delete-by-moving-to-trash'.
1276
1277 ** File- and directory-local variable changes
1278
1279 *** You can stop directory local vars from applying to subdirectories.
1280 Add an element (subdirs . nil) to the alist portion of any variables
1281 settings to indicate that the section should not apply to
1282 subdirectories.
1283
1284 *** Directory local variables can apply to some file-less buffers.
1285 Affected modes include dired, vc-dir, and log-edit. For example,
1286 adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
1287 turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
1288 `hack-dir-local-variables-non-file-buffer' to support this.
1289
1290 *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
1291 Instead, use "eval: (minor-mode 1)".
1292
1293 *** The variable `inhibit-first-line-modes-regexps' has been renamed
1294 to `inhibit-local-variables-regexps'. As the name suggests, it now
1295 applies to ALL file local variables, not just -*- lines. The
1296 associated `inhibit-first-line-modes-suffixes' has been renamed in the
1297 corresponding way.
1298
1299 ** Window changes
1300
1301 *** The `quit-window' command now restores the last buffer displayed
1302 in the quitted window.
1303
1304 *** Resizing an Emacs frame now preserves proportional window sizes,
1305 modulo restrictions like window minimum sizes and fixed-size windows.
1306
1307 *** The behavior of `display-buffer' is now customizable in detail.
1308
1309 **** New option `display-buffer-base-action' specifies a list of
1310 user-determined display "actions" (functions and optional arguments
1311 for choosing the displaying window).
1312
1313 This takes precedence over the default display action, which is
1314 specified by `display-buffer-fallback-action'.
1315
1316 **** New option `display-buffer-alist' maps buffer name regexps to
1317 display actions, taking precedence over `display-buffer-base-action'.
1318
1319 *** New option `window-combination-limit'.
1320 The new option `window-combination-limit' allows to return the space
1321 obtained for resizing or creating a window more reliably to the window
1322 from which such space was obtained.
1323
1324 *** New option `window-combination-resize'.
1325 The new option `window-combination-resize' allows to split a window that
1326 otherwise cannot be split because it's too small by stealing space from
1327 other windows in the same combination. Subsequent resizing or deletion
1328 of the window will resize all windows in the same combination as well.
1329
1330 *** New option `frame-auto-hide-function' lets you choose between
1331 iconifying or deleting a frame when burying a buffer in a dedicated
1332 frame, or quitting a window showing a buffer in a frame of its own.
1333
1334 *** New commands `maximize-window' and `minimize-window'.
1335 These maximize and minimize the size of a window within its frame.
1336
1337 *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
1338 These functions allow to navigate through the live buffers that have
1339 been shown in a specific window.
1340
1341 ** Minibuffer changes
1342
1343 *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
1344 This is handy for minibuffer-only frames, and is also used for the feature
1345 where mouse-1 pops up *Messages*"', which can now easily be changed.
1346
1347 *** Minibuffers set `truncate-lines' to nil.
1348 If you want to change the value to something else, you could use
1349 for example `minibuffer-setup-hook'.
1350
1351 ** `auto-mode-case-fold' is now enabled by default.
1352
1353 ** `backup-by-copying-when-mismatch' now defaults to t.
1354
1355 ** New basic faces `error', `warning', `success'.
1356 These are used to highlight text indicating failure, caution or
1357 successful operation.
1358
1359 ** New option `list-colors-sort' defines the color sort order
1360 for `list-colors-display'.
1361
1362 ** The variable `focus-follows-mouse' now always defaults to nil.
1363
1364 \f
1365 * Editing Changes in Emacs 24.1
1366
1367 ** Search changes
1368
1369 *** C-y in Isearch is now bound to `isearch-yank-kill', instead of
1370 `isearch-yank-line'.
1371
1372 *** M-y in Isearch is now bound to `isearch-yank-pop', instead of
1373 `isearch-yank-kill'.
1374
1375 *** M-s C-e in Isearch is now bound to `isearch-yank-line'.
1376
1377 ** New commands `count-words-region' and `count-words'.
1378
1379 *** M-= is bound to `count-words-region', not `count-lines-region'.
1380 The `count-words-region' command, when called interactively, reports
1381 the number of lines, words, and characters in the region. It is a
1382 superset of the old `count-lines-region', which is now an obsolete
1383 alias for it.
1384
1385 ** The command `just-one-space' (M-SPC), if given a negative argument,
1386 also deletes newlines around point.
1387
1388 ** Deletion changes
1389
1390 *** New option `delete-active-region'.
1391 If non-nil, [delete] and DEL delete the region if it is active and no
1392 prefix argument is given. If set to `kill', those commands kill
1393 instead.
1394
1395 *** New command `delete-forward-char', bound to [delete].
1396 This is meant for interactive use, and obeys `delete-active-region'.
1397 The command `delete-char' does not obey `delete-active-region'.
1398
1399 *** `delete-backward-char' is now a Lisp function.
1400 Apart from obeying `delete-active-region', its behavior is unchanged.
1401 However, the byte compiler now warns if it is called from Lisp; Lisp
1402 callers should use delete-char with a negative argument instead.
1403
1404 *** The option `mouse-region-delete-keys' has been deleted.
1405
1406 ** Selection changes.
1407
1408 The default handling of clipboard and primary selections has been
1409 changed to conform with modern X applications. In short, most
1410 commands for killing and yanking text now use the clipboard, while
1411 mouse commands use the primary selection.
1412
1413 In the following, we provide a list of these changes, followed by a
1414 list of steps to get the old behavior back if you prefer that.
1415
1416 *** `select-active-regions' now defaults to t.
1417 Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
1418 the kill ring. The selected text is put in the primary selection, if
1419 the system possesses a separate primary selection facility (e.g. X).
1420
1421 **** `select-active-regions' also accepts a new value, `only'.
1422 This means to only set the primary selection for temporarily active
1423 regions (usually made by mouse-dragging or shift-selection);
1424 "ordinary" active regions, such as those made with C-SPC followed by
1425 point motion, do not alter the primary selection.
1426
1427 **** `mouse-drag-copy-region' now defaults to nil.
1428
1429 *** mouse-2 is now bound to `mouse-yank-primary'.
1430 This pastes from the primary selection, ignoring the kill-ring.
1431 Previously, mouse-2 was bound to `mouse-yank-at-click'.
1432
1433 *** `x-select-enable-clipboard' now defaults to t on all platforms.
1434
1435 *** `x-select-enable-primary' now defaults to nil.
1436 Thus, commands that kill text or copy it to the kill-ring (such as
1437 M-w, C-w, and C-k) also use the clipboard---not the primary selection.
1438
1439 **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
1440 exactly equivalent to M-w, C-w, and C-y respectively.
1441
1442 **** Note that on MS-Windows, `x-select-enable-clipboard' was already
1443 non-nil by default, as Windows does not support the primary selection
1444 between applications.
1445
1446 *** To return to the previous behavior, do the following:
1447
1448 **** Change `select-active-regions' to nil.
1449 **** Change `mouse-drag-copy-region' to t.
1450 **** Change `x-select-enable-primary' to t (on X only).
1451 **** Change `x-select-enable-clipboard' to nil.
1452 **** Bind `mouse-yank-at-click' to mouse-2.
1453
1454 *** Support for X cut buffers has been removed.
1455
1456 *** X clipboard managers are now supported.
1457 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
1458
1459 ** New command `C-x r N' (`rectangle-number-lines') numbers the lines
1460 in the current rectangle. With a prefix argument, this prompts for a
1461 number to count from and for a format string.
1462
1463 ** `redisplay-dont-pause' now defaults to t.
1464 This makes Emacs feel more responsive to editing commands that arrive
1465 at high rate, e.g. if you lean on some key, because stopping redisplay
1466 in the middle (when this variable is nil) forces more expensive
1467 updates later on, and Emacs appears to be unable to keep up.
1468
1469 ** The behavior of <TAB> for active regions in Text mode has changed.
1470 In Text and related modes, typing <TAB> (`indent-for-tab-command')
1471 when the region is active causes Emacs to indent all the lines in the
1472 region, aligning them with the line previous to the first line in the
1473 region (or with the left margin if there is no previous line).
1474
1475 ** When `occur' is called with a prefix argument, matching strings are
1476 collected into the `*Occur*' buffer without line numbers. If there
1477 are parenthesized subexpressions in the specified regexp, `occur'
1478 reads replacement text that may contain \\& and \\N whose convention
1479 follows `replace-match'.
1480
1481 \f
1482 * Changes in Specialized Modes and Packages in Emacs 24.1
1483
1484 ** Archive Mode has basic support for browsing and updating 7z archives.
1485
1486 ** BibTeX mode
1487
1488 *** BibTeX mode now supports biblatex.
1489 Use the variable `bibtex-dialect' to select different BibTeX dialects.
1490 `bibtex-entry-field-alist' is now an obsolete alias for
1491 `bibtex-BibTeX-entry-alist'.
1492
1493 *** New command `bibtex-search-entries', bound to C-c C-a.
1494
1495 *** New `bibtex-entry-format' option `sort-fields', disabled by default.
1496
1497 *** New variable `bibtex-search-entry-globally'.
1498
1499 ** Browse-url
1500
1501 *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
1502
1503 *** The default browser used by the package is now the "xdg-open" program,
1504 on platforms that support it. This calls your desktop's preferred browser.
1505
1506 ** Calendar, Diary, and Appt
1507
1508 *** Diary entries can contain non-printing "comments".
1509 See the variable `diary-comment-start'.
1510
1511 *** Appointments can specify their individual warning times.
1512 See the variable `appt-warning-time-regexp'.
1513
1514 *** The function specified by `appt-disp-window-function' may be passed
1515 lists of arguments if multiple appointments are due at similar times.
1516 If you are using a custom function for this, you should update it.
1517
1518 *** New function `diary-hebrew-birthday'.
1519
1520 *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
1521 may no longer be nil, but must all be strings.
1522
1523 *** The obsolete (since Emacs 22.1) method of enabling the appt
1524 package by adding `appt-make-list' to `diary-hook' has been removed.
1525 Use `appt-activate' instead.
1526
1527 *** Some appt variables (obsolete since Emacs 22.1) have been removed:
1528 appt-issue-message (use the function appt-activate)
1529 appt-visible/appt-msg-window (use the variable appt-display-format)
1530
1531 *** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
1532 view-diary-entries, list-diary-entries, show-all-diary-entries
1533
1534 ** CC Mode
1535
1536 *** New feature to "guess" the style in an existing buffer.
1537 The main entry point is M-x c-guess.
1538
1539 *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
1540
1541 *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
1542 Thus C-M-a will, by default, go to the beginning of the immediate function,
1543 not the top level.
1544
1545 *** "Macros with semicolons" can be registered for correct indentation.
1546 Where such a macro ends a line (no semicolon) the next statement is no longer
1547 parsed as a statement continuation.
1548
1549 ** Comint and modes derived from it use the standard completion code.
1550
1551 ** Compilation mode
1552
1553 *** Compilation mode can be used without Font Lock mode.
1554 `compilation-parse-errors-function' is now obsolete.
1555
1556 *** New variable `compilation-filter-start', which is bound while
1557 `compilation-filter-hook' runs. It records the start position of the
1558 text inserted by `compilation-filter'.
1559
1560 *** `compilation-error-screen-columns' and `compilation-first-column'
1561 are obeyed in the editing buffer. So programming language modes can
1562 set them, whereas previously only the value in the *Compilation*
1563 buffer was used.
1564
1565 ** Customize
1566
1567 *** Customize buffers now contain a search field.
1568 The search is performed using `customize-apropos'.
1569 To turn off the search field, set `custom-search-field' to nil.
1570
1571 *** Options in customize group buffers start out hidden if not customized.
1572 Use the arrow to the left of the option name to toggle visibility.
1573
1574 *** custom-buffer-sort-alphabetically now defaults to t.
1575
1576 *** The color widget now has a "Choose" button, which allows you to
1577 choose a color via `list-colors-display'.
1578
1579 ** D-Bus
1580
1581 *** It is now possible to access buses other than the default system
1582 or session bus.
1583
1584 *** The `dbus-register-method' and `dbus-register-property' functions
1585 optionally do not register names.
1586
1587 *** The new function `dbus-register-service' registers a known service
1588 name on a D-Bus without also registering a property or a method.
1589
1590 ** Dired-x
1591
1592 *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
1593 if called with a prefix argument, read a file name from the minibuffer
1594 instead of using the current buffer.
1595
1596 *** The "dired local variables" feature of Dired-x is obsolete.
1597 The standard directory local variables feature replaces it.
1598
1599 ** ERC changes
1600
1601 *** New options `erc-autojoin-timing' and `erc-autojoin-delay',
1602 controlling attempts to autojoin a channel.
1603
1604 *** New variable `erc-coding-system-precedence': If we use `undecided'
1605 as the server coding system, this variable will then be consulted.
1606 The default is to decode strings that can be decoded as utf-8 as
1607 utf-8, and do the normal `undecided' decoding for the rest.
1608
1609 ** Eshell changes
1610
1611 *** The default value of `eshell-directory-name' has changed
1612 to be an "eshell" directory in `user-emacs-directory'.
1613 The old "~/.eshell/" directory is still used if it exists, though.
1614
1615 ** gdb-mi
1616
1617 *** The M-x gdb command now uses the GDB Machine Interface protocol.
1618 It now supports multithread non-stop debugging and simultaneous
1619 debugging of several threads.
1620
1621 ** Image mode
1622
1623 *** RET (`image-toggle-animation') toggles animation, if applicable.
1624 Animation plays once, unless the option `image-animate-loop' is non-nil.
1625
1626 ** Info
1627
1628 *** New command M-x info-display-manual displays a named Info manual.
1629 If that manual is already visited in some Info buffer, it displays
1630 that buffer. (This is handy if you have many manuals in many *info*
1631 buffers, and don't remember the name of the buffer visiting the manual
1632 you want to consult.) Otherwise, it loads and displays the manual.
1633
1634 *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
1635 This is for compatibility with the stand-alone Info reader program,
1636 and also because `Info-edit' is a rarely used command that is disabled
1637 by default.
1638
1639 ** Mail mode changes (not Message mode)
1640
1641 *** New command M-x mail-add-attachment for adding MIME attachments
1642
1643 *** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
1644 (Its name is misleading, since it has nothing to do with MIME
1645 attachments.) The old name is now an obsolete alias to the new name.
1646
1647 ** MH-E has been updated to MH-E version 8.3.1.
1648 See MH-E-NEWS for details.
1649
1650 ** Modula-2 mode provides auto-indentation.
1651
1652 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
1653
1654 ** nXML mode no longer binds C-RET to `nxml-complete'.
1655 Completion is now performed via `completion-at-point', bound to C-M-i
1656 or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
1657 default), this performs tag completion.
1658
1659 ** Org mode has been updated to version 7.8.09.
1660 See ORG-NEWS for details.
1661
1662 ** Prolog mode has been completely revamped, with lots of additional
1663 functionality such as more intelligent indentation, electricity,
1664 support for more variants, including Mercury, and a lot more.
1665
1666 ** Rmail
1667
1668 *** The command `rmail-epa-decrypt' decrypts OpenPGP data
1669 in the Rmail incoming message.
1670
1671 *** The variable `rmail-message-filter' no longer has any effect.
1672 This change was made in Emacs 23.1 but was not advertised at the time.
1673 Try using `rmail-show-message-hook' instead.
1674
1675 ** Shell mode
1676
1677 *** M-x shell prompts for the shell path name if the default directory
1678 is a remote file name and neither the environment variable $ESHELL nor
1679 the variable `explicit-shell-file-name' is set.
1680
1681 *** TAB is now bound to the standard `completion-at-point' command,
1682 which now implements the pcomplete rules for shell command completion.
1683
1684 ** SMTPmail
1685
1686 *** SMTPmail now uses encrypted connections (via STARTTLS) by default
1687 if the mail server supports them. This uses either built-in GnuTLS
1688 support, or the starttls.el library. Customize `smtpmail-stream-type'
1689 to change this.
1690
1691 *** The variable `smtpmail-auth-credentials' has been removed.
1692 By default, the information is now stored in the file ~/.authinfo.
1693 This was the default value of smtpmail-auth-credentials. If you had
1694 customized smtpmail-auth-credentials to a list of user names and
1695 passwords, those settings are not used. During your first connection
1696 to the smtp server, Emacs will prompt for the user name and password,
1697 and offer to save them to ~/.authinfo. Or you can manually copy the
1698 credentials to ~/.authinfo. For example, if you had
1699
1700 (setq smtpmail-auth-credentials
1701 '(("mail.example.org" 25 "jim" "s!cret")))
1702
1703 then the equivalent line in ~/.authinfo would be
1704
1705 machine mail.example.org port 25 login jim password s!cret
1706
1707 See the auth-source manual for more information, e.g. on encrypting
1708 the credentials file.
1709
1710 *** The variable `smtpmail-starttls-credentials' has been removed.
1711 If you had that set, you need to put
1712
1713 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
1714
1715 in your ~/.authinfo file instead.
1716
1717 *** SMTPmail defaults to using the address in the From: header as the
1718 SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
1719 to the address you wish to use instead.
1720
1721 ** SQL mode
1722
1723 *** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
1724 and `sql-oracle-scan-on'.
1725
1726 *** New options controlling prompting for login parameters.
1727 Each supported product has a custom variable `sql-*-login-params',
1728 which is a list of the parameters to be prompted for before a
1729 connection is established.
1730
1731 *** The command `sql-product-interactive' now takes a prefix argument,
1732 which causes it to prompt for an SQL product.
1733
1734 *** Product-specific SQL interactive commands now take prefix arguments.
1735 These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
1736 given a prefix argument, prompt for a name for the SQL interactive
1737 buffer. This reduces the need for calling `sql-rename-buffer'.
1738
1739 *** SQL interactive modes suppress command continuation prompts, and
1740 replace tabs with spaces. The first change impacts multiple line SQL
1741 statements entered with C-j between each line, statements yanked into
1742 the buffer and statements sent with `sql-send-*' functions. The
1743 second prevents the MySQL and Postgres interpreters from listing
1744 object name completions when sent text via `sql-send-*' functions.
1745
1746 *** New command `sql-connect' starts a predefined SQLi session,
1747 using the login parameters from `sql-connection-alist'.
1748
1749 *** New "Save Connection" menu item in SQLi buffers.
1750 This gathers the login params specified for the SQLi session, if it
1751 was not started by a connection, and saves them as a new connection.
1752
1753 *** New commands for listing database objects and details:
1754 sql-list-all and sql-list-table.
1755
1756 *** An API for manipulating SQL product definitions has been added.
1757
1758 ** TeX modes
1759
1760 *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
1761
1762 ** Tramp
1763
1764 *** New inline access method "ksu" (kerberized su).
1765
1766 *** The following access methods are discontinued: "ssh1_old",
1767 "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
1768
1769 *** The user option `remote-file-name-inhibit-cache' controls whether
1770 remote file attributes are cached for better performance.
1771
1772 *** The option `ange-ftp-binary-file-name-regexp' has changed its
1773 default value to "".
1774
1775 *** Handlers for `file-selinux-context' and `set-file-selinux-context'
1776 for remote machines which support SELinux.
1777
1778 ** New function `url-queue-retrieve', which behaves like url-retrieve,
1779 but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
1780 the degree of parallelism.
1781
1782 ** VC and related modes
1783
1784 *** Support for pulling on distributed version control systems.
1785 The command C-x v + (`vc-pull') runs a "pull" operation, if it is
1786 supported (currently with Bzr, Git, and Mercurial), to update the
1787 current branch and working tree. A prefix argument means to prompt
1788 the user for specifics, e.g. a pull location.
1789
1790 *** `vc-update' is now an alias for `vc-pull'.
1791
1792 *** Support for merging on distributed version control systems.
1793 The command C-x v m (`vc-merge') now runs a "merge" operation, if it
1794 is supported (currently with Bzr, Git, and Mercurial), to merge
1795 changes from another branch into the current one. It prompts for
1796 specifics, e.g. a merge source.
1797
1798 *** New option `vc-revert-show-diff' controls whether `vc-revert'
1799 shows a diff while querying the user. It defaults to t.
1800
1801 *** Log entries in some Log View buffers can be toggled to display a
1802 longer description by typing RET (log-view-toggle-entry-display).
1803 This is currently supported for Bzr, Git, and Mercurial (to support
1804 another backend, define a `log-view-expanded-log-entry-function').
1805 In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
1806 use this to display the full log entry for the revision at point.
1807
1808 *** New command `vc-ediff' allows visual comparison of two revisions
1809 of a file similar to `vc-diff', but using ediff backend.
1810
1811 *** The option `vc-initial-comment' was removed in Emacs 23.2, but
1812 this was not advertised at the time.
1813
1814 *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
1815 Since Emacs 23, it has done the same thing as `toggle-read-only', but
1816 this was not advertised at the time.
1817
1818 ** Obsolete modes
1819
1820 *** abbrevlist.el
1821
1822 *** erc-hecomplete.el (use erc-pcomplete.el instead)
1823
1824 *** partial-completion-mode (complete.el) is obsolete.
1825 You can get a comparable behavior with:
1826 (setq completion-styles '(partial-completion initials))
1827 (setq completion-pcm-complete-word-inserts-delimiters t)
1828
1829 *** pc-mode.el is obsolete (CUA mode is much more comprehensive).
1830
1831 *** pgg is obsolete (use EasyPG instead).
1832
1833 *** sregex.el is obsolete, since rx.el is a strict superset.
1834
1835 *** s-region.el and pc-select.el are obsolete.
1836 They are superseded by shift-select-mode, enabled by default since 23.1.
1837
1838 *** vc-mcvs.el is obsolete (for lack of a maintainer).
1839
1840 ** Miscellaneous
1841
1842 *** The Landmark game is now invoked with `landmark', not `lm'.
1843 Its functions and variables have been similarly renamed.
1844
1845 *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
1846 (This interfered with cua-mode.)
1847
1848 *** f90.el has some support for Fortran 2008 syntax.
1849
1850 *** `copyright-fix-years' can optionally convert consecutive years to ranges.
1851
1852 *** New command `nato-region' converts text to NATO phonetic alphabet.
1853
1854 \f
1855 * New Modes and Packages in Emacs 24.1
1856
1857 ** Occur Edit mode applies edits made in *Occur* buffers to the
1858 original buffers. It is bound to "e" in Occur mode.
1859
1860 ** New global minor mode electric-pair-mode.
1861 When enabled, typing an open parenthesis automatically inserts the
1862 matching closing one.
1863
1864 ** New global minor mode electric-indent-mode.
1865 When enabled, typing certain characters triggers reindentation.
1866 Major modes wishing to use this can set electric-indent-chars or
1867 electric-indent-functions.
1868
1869 ** New global minor mode electric-layout-mode.
1870 When enabled, typing certain characters automatically inserts newlines.
1871 Major modes wishing to use this can set electric-layout-rules.
1872
1873 ** tabulated-list.el provides a generic major mode for tabulated data,
1874 from which other modes can be derived.
1875
1876 ** pcase.el provides the ML-style pattern matching macro `pcase'.
1877
1878 ** secrets.el is an implementation of the Secret Service API, an
1879 interface to password managers like GNOME Keyring or KDE Wallet. The
1880 Secret Service API requires D-Bus for communication. The command
1881 `secrets-show-secrets' offers a buffer with a visualization of the
1882 secrets.
1883
1884 ** notifications.el provides an implementation of the Desktop
1885 Notifications API. It requires D-Bus for communication.
1886
1887 ** soap-client.el supports access to SOAP web services from Emacs.
1888 soap-inspect.el is an interactive inspector for SOAP WSDL structures.
1889
1890 ** New generic mode, xmodmap-generic-mode, for xmodmap files.
1891
1892 ** New emacs-lock.el package.
1893 The previous version has been moved to obsolete/old-emacs-lock.el.
1894 Now, there is a proper minor mode `emacs-lock-mode'. Protection
1895 against exiting Emacs and killing the buffer can be set separately.
1896 The mechanism for automatically turning off protection for buffers
1897 with dead inferior processes has been generalized.
1898
1899 \f
1900 * Incompatible Lisp Changes in Emacs 24.1
1901
1902 ** Passing a nil argument to a minor mode function call now ENABLES
1903 the minor mode unconditionally. This is so that you can write e.g.
1904
1905 (add-hook 'text-mode-hook 'foo-mode)
1906
1907 to enable foo-mode in Text mode buffers, removing the need for
1908 `turn-on-foo-mode' style functions. This affects all mode commands
1909 defined by `define-minor-mode'. If called interactively, the mode
1910 command still toggles the minor mode.
1911
1912 ** The return value of `backup-buffer' has changed.
1913 It is now a list of three elements, where the second element is a list
1914 describing the original file's SELinux context. If Emacs or the
1915 system lacks SELinux support, the context list is (nil nil nil nil).
1916 See "Basic SELinux support" above, under "Changes in Emacs 24.1".
1917
1918 ** `char-direction-table' and the `char-direction' function were deleted.
1919 They were buggy and inferior to the new support of bidirectional
1920 editing introduced in Emacs 24. If you need the bidirectional
1921 properties of a character, use `get-char-code-property' with the last
1922 argument `bidi-class'.
1923
1924 ** `copy-directory' now copies the source directory as a subdirectory
1925 of the target directory, if the latter is an existing directory. The
1926 new optional arg COPY-CONTENTS, if non-nil, makes the function copy
1927 the contents directly into a pre-existing target directory.
1928
1929 ** For mouse click input events in the text area, the Y pixel
1930 coordinate in the POSITION list now counts from the top of the text
1931 area, excluding any header line. Previously, it counted from the top
1932 of the header line.
1933
1934 ** Support for "old-style" backquotes, obsolete for 10+ years, has
1935 been further reduced. Now a backquote not followed by a space is
1936 always treated as a "new-style" backquote. Please remove all
1937 "old-style" backquotes from your code. If your code uses backquotes
1938 as documented in the Elisp manual, and compiles without warning, then
1939 you have nothing to do in this regard. Code not following the
1940 appropriate conventions may fail to compile.
1941
1942 The most common cause of trouble seems to be an old-style backquote
1943 followed by a newline. Another cause of trouble is vector notation
1944 for key sequence notation: instead of [(control ,)] and [(control ')],
1945 you should write [(control ?,)] and [(control ?')], which will work in
1946 older Emacsen too.
1947
1948 ** The macro `eval-at-startup' was removed in Emacs 23.2, but this
1949 was not advertised at the time. The function `custom-initialize-delay'
1950 replaced all known uses.
1951
1952 ** `view-buffer' now treats special mode-class in the same way that
1953 `view-file' has since Emacs 22 (i.e. it won't enable View mode if the
1954 major mode is special).
1955
1956 ** Menu and tool bar changes
1957
1958 *** During startup, Emacs no longer adds entries for `menu-bar-lines'
1959 and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
1960 With these alist entries omitted, `make-frame' checks the value of the
1961 variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
1962 a menu-bar or tool-bar, respectively. If the alist entries are added,
1963 they override the value of `menu-bar-mode'/`tool-bar-mode'.
1964
1965 *** The menu bar bindings's caches are not used any more.
1966 Use (where-is-internal <def> nil t) instead.
1967
1968 ** Regions created by mouse dragging are now normal active regions,
1969 similar to those created by shift-selection (see Selection changes
1970 above). In previous Emacs versions, these regions were delineated by
1971 `mouse-drag-overlay'; that variable has been removed.
1972
1973 ** The fourth argument of `filter-buffer-substring' has been removed.
1974 If you want to remove text properties from the final result, simply
1975 pass the result through substring-no-properties.
1976
1977 ** cl.el no longer provides `cl-19'.
1978
1979 ** The following obsolete functions and aliases have been removed
1980 (the appropriate new function is given in parentheses; "not needed"
1981 means you can just remove all calls to the function in question):
1982
1983 *** `comint-kill-output' (`comint-delete-output')
1984 *** `decompose-composite-char' (`char-to-string')
1985 *** `outline-visible' (`outline-invisible-p')
1986 *** `internal-find-face' (`facep')
1987 *** `internal-get-face' (`facep and check-face')
1988 *** `frame-update-faces' (not needed)
1989 *** `frame-update-face-colors' (`frame-set-background-mode')
1990 *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
1991 *** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
1992 *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
1993 *** `x-make-font-bold-italic' (`make-face-bold-italic')
1994 *** `x-make-font-unbold' (`make-face-unbold')
1995 *** `x-make-font-unitalic' (`make-face-unitalic')
1996 *** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
1997 *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
1998 *** `iswitchb-default-keybindings' (`iswitchb-mode')
1999 *** `char-bytes' (== 1)
2000 *** `isearch-return-char' (`isearch-printing-char')
2001 *** `make-local-hook' (not needed)
2002 *** `set-screen-height' (`set-frame-height')
2003 *** `set-screen-width' (`set-frame-width')
2004
2005 ** The following obsolete variables and varaliases have been removed
2006 (the appropriate new variable is given in parentheses):
2007
2008 *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
2009 *** `vc-header-alist' (`vc-BACKEND-header')
2010 *** `directory-sep-char' (== ?/)
2011 *** `font-lock-defaults-alist' (`font-lock-defaults')
2012 *** `e' (`float-e').
2013
2014 ** The following obsolete files were removed:
2015 sc.el, x-menu.el, rnews.el, rnewspost.el
2016
2017 ** The format of the finder-inf.el file has changed, since the Finder
2018 mechanism is now based on the package system. The variable
2019 `finder-package-info' is replaced by `package--builtins' and
2020 `finder-keywords-hash'.
2021
2022 ** When generating autoloads, `update-directory-autoloads' no longer
2023 assumes every inspected file is in your `load-path'. It instead
2024 generates relative names according to the current `load-path'.
2025
2026 \f
2027 * Lisp changes in Emacs 24.1
2028
2029 ** Code can now use lexical scoping by default instead of dynamic scoping.
2030 The `lexical-binding' variable enables lexical scoping for local
2031 variables. It is typically set via a file-local variable in the first
2032 line of the file, in which case it applies to all the code in that
2033 file.
2034
2035 *** `eval' takes a new optional argument `lexical' to choose the new lexical
2036 binding instead of the old dynamic binding mode.
2037
2038 *** Lexically scoped interpreted functions are represented with a new form
2039 of function value which looks like (closure ENV ARGS &rest BODY).
2040
2041 *** New macro `letrec' to define recursive local functions.
2042
2043 *** `defvar' and `defconst' now mark the variable as special (dynamic).
2044 So do `defcustom' and other forms that call `defvar' as a subroutine.
2045
2046 *** New function `special-variable-p' to check whether a variable is
2047 declared as dynamically bound.
2048
2049 *** The form ((lambda ...) ...) is deprecated.
2050
2051 ** An Emacs Lisp testing tool is now included.
2052 Emacs Lisp developers can use this tool to write automated tests for
2053 their code. See the ERT info manual for details.
2054
2055 ** Changes for bidirectional display and editing
2056
2057 *** New function `current-bidi-paragraph-direction'.
2058 This returns the base direction of the paragraph at point.
2059
2060 *** New function `bidi-string-mark-left-to-right'.
2061 Given a string containing characters from right-to-left scripts, this
2062 function returns another string which can be safely inserted into a
2063 buffer, such that any following text will be always displayed to the
2064 right of that string. (This works by appending an invisible Unicode
2065 "LEFT-TO-RIGHT MARK" character if the argument string might need it.)
2066
2067 This is useful when the buffer has overall left-to-right paragraph
2068 direction and you need to insert a string whose contents are not known
2069 in advance, without disrupting the layout of the line.
2070
2071 ** Window changes
2072
2073 *** Window tree functions are accessible in Elisp.
2074 Functions are provided to return the parent, siblings or child windows
2075 of any window including internal windows (windows not associated with a
2076 buffer) in the window tree.
2077
2078 **** New function `window-valid-p' gives non-nil for live and internal
2079 windows.
2080
2081 **** Window manipulation can deal with internal windows.
2082 Many window handling functions like `split-window', `delete-window', or
2083 `delete-other-windows' as well as the window resizing functions can now
2084 act on any window including internal ones.
2085
2086 *** window-total-height/-width vs window-body-height/-width.
2087 The function `window-height' has been renamed to `window-total-height'
2088 and `window-width' has been renamed to `window-body-width'. The old
2089 names are provided as aliases. Two new functions `window-total-width'
2090 and `window-body-height' are provided.
2091
2092 *** Window parameters specific to window handling functions.
2093 For each window you can specify a parameter to override the default
2094 behavior of a number of functions like `split-window', `delete-window'
2095 and `delete-other-windows'. The variable `ignore-window-parameters'
2096 allows to ignore processing such parameters.
2097
2098 *** New semantics of third argument of `split-window'.
2099 The third argument of `split-window' has been renamed to SIDE and can be
2100 set to any of the values 'below, 'right, 'above, or 'left to make the
2101 new window appear on the corresponding side of the window that shall be
2102 split. Any other value of SIDE will cause `split-window' to split the
2103 window into two side-by-side windows as before.
2104
2105 *** Window resizing functions.
2106 A new standard function for resizing windows called `window-resize' has
2107 been introduced. This and all other functions for resizing windows no
2108 longer delete any windows when they become too small.
2109
2110 *** Deleting the selected window now selects the most recently selected
2111 live window on that frame instead.
2112
2113 *** `adjust-window-trailing-edge' adjustments.
2114 `adjust-window-trailing-edge' can now deal with fixed-size windows and
2115 is able to resize other windows if a window adjacent to the trailing
2116 edge cannot be shrunk any more. This makes its behavior more similar to
2117 that of Emacs 21 without compromising, however, its inability to delete
2118 windows which was introduced in Emacs 22.
2119
2120 *** Window-local buffer lists.
2121 Windows now have local buffer lists. This means that removing a buffer
2122 from display in a window will preferably show the buffer previously
2123 shown in that window with its previous window-start and window-point
2124 positions. This also means that the same buffer may be automatically
2125 shown twice even if it already appears in another window.
2126
2127 *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
2128 which if non-nil requires the buffer to be displayed in the currently
2129 selected window, signaling an error otherwise. If nil, another window
2130 can be used, e.g. if the selected one is strongly dedicated.
2131
2132 *** `split-window-vertically' and `split-window-horizontally' renamed
2133 to `split-window-below' and `split-window-right' respectively.
2134 The old names are kept as aliases.
2135
2136 *** Display actions
2137
2138 **** The second arg to `display-buffer' and `pop-to-buffer' is now
2139 named ACTION, and takes a display action of the same form as
2140 `display-buffer-base-action' (see Changes, above). A non-nil,
2141 non-list value is treated specially, as the old meaning.
2142
2143 **** New variable `display-buffer-overriding-action'.
2144
2145 **** The procedure of `display-buffer' etc. to choose a window is
2146 determined by combining `display-buffer-overriding-action',
2147 `display-buffer-alist', the ACTION arg, `display-buffer-base-action',
2148 and `display-buffer-fallback-action'. The second and fourth of these
2149 are user-customizable variables.
2150
2151 See the docstring of `display-buffer' for details.
2152
2153 *** New functions `window-state-get' and `window-state-put'.
2154 These functions allow to save and restore the state of an arbitrary
2155 frame or window as an Elisp object.
2156
2157 ** Completion
2158
2159 *** New variable `completion-extra-properties' used to specify extra
2160 properties of the current completion:
2161 - :annotate-function, same as the old completion-annotate-function.
2162 - :exit-function, function to call after completion took place.
2163
2164 *** Functions on `completion-at-point-functions' can return any of the
2165 properties valid for `completion-extra-properties'.
2166
2167 *** `completion-annotate-function' is obsolete.
2168
2169 *** New `metadata' method for completion tables. The metadata thus returned
2170 can specify various details of the data returned by `all-completions':
2171 - `category' is the kind of objects returned (e.g., `buffer', `file', ...),
2172 used to select a style in completion-category-overrides.
2173 - `annotation-function' to add annotations in *Completions*.
2174 - `display-sort-function' to specify how to sort entries in *Completions*.
2175 - `cycle-sort-function' to specify how to sort entries when cycling.
2176
2177 *** `minibuffer-local-filename-must-match-map' is not used any more.
2178 Instead, the bindings in `minibuffer-local-filename-completion-map'
2179 are combined with `minibuffer-local-must-match-map'.
2180
2181 *** New variable `completing-read-function' allows overriding the
2182 behavior of `completing-read'.
2183
2184 ** `glyphless-char-display' can now distinguish between graphical and
2185 text terminal display, via a char-table entry that is a cons cell.
2186
2187 ** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
2188 Instead, the offending function is removed.
2189
2190 ** New hook types
2191
2192 *** New function `run-hook-wrapped' for running an abnormal hook by
2193 passing the hook functions as arguments to a "wrapping" function.
2194 Like `run-hook-with-args-until-success', it stops at the first
2195 non-nil return value.
2196
2197 *** New macro `with-wrapper-hook' for running an abnormal hook as a
2198 set of "wrapping" filters, similar to around advice.
2199 (A version of this macro was actually added in Emacs 23.2 but was not
2200 advertised at the time.)
2201
2202 ** Debugger changes
2203
2204 *** New macro `condition-case-unless-debug' (this was actually added in
2205 Emacs 23.1 as condition-case-no-debug, but not advertised)
2206
2207 *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
2208
2209 *** Variable `stack-trace-on-error' removed.
2210
2211 *** The debugger can now "continue" from an error, which means it will
2212 jump to the error handler as if the debugger had not been invoked
2213 instead of jumping all the way to the top-level.
2214
2215 *** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
2216 This can be useful when `inhibit-quit' is set.
2217
2218 ** The new function `server-eval-at' allows evaluation of Lisp forms on
2219 named Emacs server instances.
2220
2221 ** `call-process' and `call-process-region' allow a `(:file "file")' spec
2222 to redirect STDOUT to a file.
2223
2224 ** The function `format-time-string' now supports the %N directive,
2225 for higher-resolution time stamps.
2226
2227 ** New input reading functions
2228
2229 *** New function `read-char-choice' reads a restricted set of
2230 characters, discarding any inputs not inside the set.
2231
2232 *** The command `read-color' now requires a match for a color name
2233 or RGB triplet, instead of signaling an error if the user provides
2234 invalid input.
2235
2236 **** `facemenu-read-color' is now an alias for `read-color'.
2237
2238 ** `image-library-alist' is renamed to `dynamic-library-alist'.
2239 The variable is now used to load all kind of supported dynamic libraries,
2240 not just image libraries. The previous name is still available as an
2241 obsolete alias.
2242
2243 ** Syntax parsing changes
2244
2245 *** New variable `syntax-propertize-function'.
2246 This replaces `font-lock-syntactic-keywords' which is now obsolete.
2247 This allows syntax-table properties to be set independently from font-lock:
2248 just call syntax-propertize to make sure the text is propertized.
2249 Together with this new variable come a new hook
2250 syntax-propertize-extend-region-functions, as well as two helper functions:
2251 syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
2252 as-is; and syntax-propertize-rules which provides a new way to specify
2253 syntactic rules.
2254
2255 *** Syntax tables support a new "comment style c" additionally to style b.
2256
2257 ** New hook `post-self-insert-hook', run after `self-insert-command'.
2258
2259 ** frame-local variables cannot be let-bound any more.
2260
2261 ** Major and minor mode changes
2262
2263 *** `set-auto-mode' now respects mode: local variables at the end of files,
2264 as well as those in the -*- line.
2265
2266 *** `prog-mode' is a new major mode from which programming modes
2267 should be derived.
2268
2269 **** `prog-mode-hook' can be used to enable features for programming
2270 modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
2271 on-the-fly spell checking for comments and strings.
2272
2273 *** New hook `change-major-mode-after-body-hook', run by
2274 `run-mode-hooks' just before any other mode hooks.
2275
2276 *** Enabled globalized minor modes can be disabled in specific major modes.
2277 If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
2278 major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
2279
2280 *** `define-minor-mode' accepts new keywords :variable, :after-hook.
2281
2282 ** File-handling changes
2283
2284 *** `delete-file' and `delete-directory' now accept optional arg TRASH.
2285 Trashing is performed if TRASH and `delete-by-moving-to-trash' are
2286 both non-nil. Interactively, TRASH defaults to t, unless a prefix
2287 argument is supplied (see Trash changes, above).
2288
2289 *** New file predicates: `file-equal-p', `file-in-directory-p'.
2290
2291 ** Tool-bars can display separators.
2292 Tool-bar separators are handled like menu separators in menu-bar maps,
2293 i.e. via menu entries of the form `(menu-item "--")'.
2294
2295 ** Image API
2296
2297 *** Animated images support (currently animated gifs only).
2298
2299 **** `image-animated-p' returns non-nil if an image can be animated.
2300
2301 **** `image-animate' animates a supplied image spec.
2302
2303 **** `image-animate-timer' returns the timer object for an image that
2304 is being animated.
2305
2306 *** `image-extension-data' has been renamed to `image-metadata'.
2307 The old name is an obsolete alias to the new one.
2308
2309 *** Image mode can view any image type that ImageMagick supports.
2310 This requires Emacs to be built with ImageMagick support.
2311
2312 **** New function `imagemagick-types', defined if ImageMagick support
2313 is enabled, returns a list of image file extensions that your
2314 ImageMagick installation supports.
2315
2316 **** New function `imagemagick-register-types' enables ImageMagick
2317 image types in Image mode and in `create-image' and other helper
2318 functions.
2319
2320 **** New option `imagemagick-types-inhibit' excludes certain
2321 ImageMagick image types from `imagemagick-register-types'.
2322
2323 **** With ImageMagick support, there are extra Image mode commands to
2324 resize and rotate images: `image-transform-fit-to-height',
2325 `image-transform-fit-to-width', `image-transform-set-rotation', and
2326 `image-transform-set-scale'.
2327
2328 ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
2329 passes it to the mail user agent function. This argument specifies an
2330 action for returning to the caller after finishing with the mail. For
2331 example, this is used by Rmail to optionally delete a mail window.
2332
2333 ** XML and HTML parsing
2334 If Emacs is compiled with libxml2 support, there are two new
2335 functions: `libxml-parse-html-region' (which parses "real world" HTML)
2336 and `libxml-parse-xml-region' (which parses XML). Both return an
2337 Emacs Lisp parse tree.
2338
2339 ** Networking and encryption changes
2340
2341 *** `open-network-stream' can now be used to open an encrypted stream.
2342 It now accepts an optional `:type' parameter for initiating a TLS
2343 connection, directly or via STARTTLS. To do STARTTLS, additional
2344 parameters (`:end-of-command', `:success', `:capabilities-command')
2345 must also be supplied.
2346
2347 *** New library gnutls.el.
2348 The new function `gnutls-available-p' returns non-nil if Emacs is
2349 built with GnuTLS support. The main entry points are
2350 `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
2351 these functions through `open-network-stream', because that can
2352 upgrade connections through STARTTLS opportunistically or use plain
2353 SSL, depending on your needs. For debugging, set `gnutls-log-level'
2354 greater than 0.
2355
2356 *** New primitive `secure-hash' that supports many secure hash algorithms:
2357 md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
2358 sha1.el has been removed. The `sha1' feature is provided by default.
2359
2360 ** Isearch
2361
2362 *** New hook `isearch-update-post-hook' that runs in `isearch-update'.
2363
2364 ** Progress reporters can now "spin".
2365 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
2366 now be nil, or omitted. This makes a "non-numeric" reporter. Each
2367 time you call `progress-reporter-update' on that progress reporter,
2368 with a nil or omitted VALUE argument, the reporter message is
2369 displayed with a "spinning bar".
2370
2371 ** New variable `revert-buffer-in-progress-p' is true while a buffer is
2372 being reverted, even if the buffer has a local `revert-buffer-function'.
2373
2374 ** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
2375 If delayed-warnings-list is non-nil, the command loop calls
2376 `delayed-warnings-hook' after `post-command-hook'. At present, this
2377 is only used by Emacs on some platforms to display warnings during
2378 startup, which might otherwise not be noticed. This uses the
2379 functions `display-delayed-warnings' and `collapse-delayed-warnings'.
2380
2381 ** rx.el has a new `group-n' construct for explicitly numbered groups.
2382
2383 ** New function `make-composed-keymap' that constructs a new keymap
2384 from multiple input maps. You can use this to make a keymap that
2385 inherits from multiple maps, eg:
2386 (set-keymap-parent newmap (make-composed-keymap othermap parent))
2387
2388 ** New function `string-prefix-p'.
2389 (This was actually added in Emacs 23.2 but was not advertised at the time.)
2390
2391 ** New reader macro ## that stands for the empty symbol.
2392 This means that the empty symbol can now be read back. Also, #: by itself
2393 (when not immediately followed by a possible symbol character) stands for
2394 an empty uninterned symbol.
2395
2396 ** New math functions `isnan', `copysign', `frexp', `ldexp'.
2397
2398 ** The following functions and variables are obsolete:
2399
2400 *** `tooltip-use-echo-area' is obsolete.
2401 Rather than setting this to t, disable Tooltip mode instead.
2402
2403 *** buffer-substring-filters is obsolete.
2404 Use `filter-buffer-substring-functions' instead.
2405
2406 *** `byte-compile-disable-print-circle' is obsolete.
2407
2408 *** `deferred-action-list' and `deferred-action-function' are obsolete.
2409 Use `post-command-hook' instead.
2410
2411 *** `font-lock-maximum-size' is obsolete.
2412
2413 \f
2414 * Changes in Emacs 24.1 on non-free operating systems
2415
2416 ** On MS Windows, Emacs warns when using the obsolete init file _emacs,
2417 and also when HOME is set to C:\ by default.
2418
2419 ** New configure.bat options
2420
2421 *** --enable-checking builds Emacs with extra runtime checks.
2422
2423 *** --distfiles specifies files to be included in binary distribution.
2424
2425 *** --without-gnutls disables automatic GnuTLS detection.
2426
2427 *** --lib for general library linkage, works with the USER_LIBS build variable.
2428
2429 ** New make target `dist' to create binary distribution for MS Windows.
2430
2431 ** The Lisp function `w32-default-color-map' is now obsolete.
2432 (It is only used internally in the Emacs C code.)
2433
2434 ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
2435 reappear on mouse-over. (Requires OS X 10.6 or later.)
2436
2437 ** On Mac OS X, dragging a file into Emacs visits the file, like on
2438 other platforms, rather than inserting its contents into the buffer.
2439
2440 \f
2441 ----------------------------------------------------------------------
2442 This file is part of GNU Emacs.
2443
2444 GNU Emacs is free software: you can redistribute it and/or modify
2445 it under the terms of the GNU General Public License as published by
2446 the Free Software Foundation, either version 3 of the License, or
2447 (at your option) any later version.
2448
2449 GNU Emacs is distributed in the hope that it will be useful,
2450 but WITHOUT ANY WARRANTY; without even the implied warranty of
2451 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2452 GNU General Public License for more details.
2453
2454 You should have received a copy of the GNU General Public License
2455 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2456
2457 \f
2458 Local variables:
2459 mode: outline
2460 paragraph-separate: "[ \f]*$"
2461 end: