Remove --disable-maintainer-mode option from 'configure'. (Bug#11555)
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1GNU Emacs NEWS -- history of user-visible changes.
2
3Copyright (C) 2010-2012 Free Software Foundation, Inc.
4See the end of the file for license conditions.
5
6Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7If possible, use M-x report-emacs-bug.
8
9This file is about changes in Emacs version 24.
10
11See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12and NEWS.1-17 for changes in older Emacs versions.
13
14You can narrow news to a specific version by calling `view-emacs-news'
15with a prefix argument or by typing C-u C-h C-n.
16
17Temporary note:
18+++ indicates that the appropriate manual has already been updated.
19--- means no change in the manuals is called for.
20When you add a new item, please add it without either +++ or ---
21so we will look at it and add it to the manual.
22
23\f
24* Installation Changes in Emacs 24.2
25
26** New configure option '--enable-gcc-warnings', intended for developers.
27If building with GCC, this enables compile-time checks that warn about
28possibly-questionable C code. On a recent GNU system there should be
29no warnings; on older and on non-GNU systems the generated warnings
30may be useful.
31
32** The configure option '--disable-maintainer-mode' has been removed,
33as it was confusingly-named and rarely useful.
34
35---
36** Emacs uses libtinfo in preference to libncurses, if available.
37
38---
39** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
40/usr/pkg/lib to the linker search path. You must add them yourself if
41you want them.
42
43---
44** On Mac OS X, configure no longer automatically adds the Fink /sw
45directories to the search path. You must add them yourself if you want them.
46
47\f
48* Startup Changes in Emacs 24.2
49
50** Emacs no longer searches for `leim-list.el' files beneath the standard
51lisp/ directory. There should not be any there anyway. If you have
52been adding them there, put them somewhere else, eg site-lisp.
53
54\f
55* Changes in Emacs 24.2
56
57** New functions `system-users', `system-groups' return lists of the user
58name, group names known to the system (where possible).
59
60** If your Emacs was built from a bzr checkout, the new variable
61`emacs-bzr-version' contains information about which bzr revision was used.
62
63** ImageMagick support, if available, is automatically enabled.
64It is no longer necessary to call `imagemagick-register-types'
65explicitly to install ImageMagick image types; that function is called
66automatically at startup, or when customizing imagemagick-types-enable
67or imagemagick-types-inhibit.
68
69*** Setting `imagemagick-types-inhibit' to t now disables the use of
70ImageMagick to view images. You must call imagemagick-register-types
71afterwards if you do not use customize to change this.
72
73*** The new variable `imagemagick-types-enable' also affects which
74ImageMagick types are treated as images. The function
75`imagemagick-filter-types' returns the list of types that will be
76treated as images.
77
78** String values for `initial-buffer-choice' also apply to emacsclient
79frames, if emacsclient is only told to open a new frame without
80specifying any file to visit or expression to evaluate.
81
82+++
83** You can prevent the creation of lock files by setting `create-lockfiles'
84to nil. Use with caution, and only if you really need to.
85
86+++
87** Using "unibyte: t" in Lisp source files is obsolete.
88Use "coding: raw-text" instead.
89
90\f
91* Editing Changes in Emacs 24.2
92
93** Search changes
94
95*** Global `M-s _' starts a symbol (identifier) incremental search,
96and `M-s _' in Isearch toggles symbol search mode.
97`M-s c' in Isearch toggles search case-sensitivity.
98
99** M-x move-to-column, if called interactively with no prefix arg, now
100prompts for a column number.
101
102** `mouse-avoidance-banish-position' can now be used to customize
103`mouse-avoidance-mode' further.
104
105** `C-M-f' and `C-M-b' will now move to the path name separator
106character when doing minibuffer filename prompts.
107
108** `goto-char' is now bound to `M-g c'.
109
110\f
111* Changes in Specialized Modes and Packages in Emacs 24.2
112
113** VHDL-mode
114- Support for ghdl (free vhdl compiler). Now default.
115- Add/update support for VHDL-AMS packages.
116- Update to VHDL'02 standard.
117- Accept \r and \f as whitespace.
118
119** Diff mode
120
121Faces for changes now use the same diff color scheme as in modern VCSes
122where deletions are displayed in red (new faces `diff-refine-removed'
123and `smerge-refined-removed' and new definition of `diff-removed'),
124insertions in green (new faces `diff-refine-added' and
125`smerge-refined-added' and new definition of `diff-added').
126The variable `diff-use-changed-face' defines whether to use
127the face `diff-changed', or `diff-removed' and `diff-added'
128to highlight changes in context diffs.
129
130** Ediff now uses the same color scheme as Diff mode
131on high color displays.
132
133** `sh-script'
134*** Pairing of parens/quotes uses electric-pair-mode instead of skeleton-pair.
135*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
136*** `sh-use-smie' lets you choose a new indentation and navigation code.
137
138** reStructuredText mode
139
140*** Rebind nearly all keys making room for more keys and complying
141better to usage in other modes. Describe bindings with C-c C-h.
142
143*** Major revision of indentation working very similar to other
144modes. TAB is your friend.
145
146*** Major revision of filling working fine with most of
147reStructuredText syntax. Support auto-filling.
148
149*** Major revision of comment handling.
150
151*** Major revision of fontification working with `jit-lock-mode'.
152
153*** Cover reStructuredText syntax more closely. Improve
154the experience for Sphinx users.
155
156*** `rst-insert-list' inserts new list or continues existing lists.
157
158*** Extend correct and improve customization.
159
160*** Negative prefix argument always works for `rst-adjust'.
161
162*** Reset window configuration after displaying TOC.
163
164*** Package version in `rst-version'.
165
166** New `derived-mode' filter for Ibuffer, bound to `/ M'.
167`/ m' is now bound to filter by used-mode, which used to be bound to `/ M'.
168
169** Apropos
170
171*** The faces used by Apropos are now directly customizable.
172These faces are named `apropos-symbol', `apropos-keybinding', and so on;
173see the `apropos' Custom group for details.
174
175**** The old options whose values specified faces to use were removed
176(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
177
178** Calendar
179
180*** The calendars produced by cal-html include holidays.
181Customize cal-html-holidays to change this.
182
183** Customize
184
185*** `custom-reset-button-menu' now defaults to t.
186
187*** Non-option variables are never matched in `customize-apropos' and
188`customize-apropos-options' (i.e. the prefix argument does nothing for
189these commands now).
190
191** erc will look up server/channel names via auth-source and use the
192channel keys found, if any.
193
194** FFAP
195
196*** The option `ffap-url-unwrap-remote' can now be a list of strings,
197specifying URL types which should be converted to remote file names at
198the FFAP prompt. The default is now '("ftp").
199
200** Follow mode
201
202*** The obsolete variable `follow-mode-off-hook' has been removed.
203
204*** Follow mode no longer works by using advice.
205The option `follow-intercept-processes' has been removed.
206
207** The `server-auth-key' variable can be used to set a permanent
208shared key for Emacs Server.
209
210** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
211closing brackets to be aligned with the line of the opening bracket.
212
213** FIXME something happened to ses.el, 2012-04-17.
214
215** which-function-mode now applies to all applicable major modes by default.
216
217** D-Bus
218
219+++
220*** New variables `dbus-compiled-version' and `dbus-runtime-version'.
221
222+++
223*** The D-Bus object manager interface is implemented.
224
225+++
226*** Variables of type :(u)int32 and :(u)int64 accept floating points,
227if their value does not fit into Emacs's integer range.
228
229+++
230*** The function `dbus-call-method' works non-blocking now, it can be
231interrupted by C-g. `dbus-call-method-non-blocking' is obsolete.
232
233+++
234*** Signals can be sent also as unicast message.
235
236+++
237*** The argument list of `dbus-register-signal' has been extended,
238according to the new match rule types of D-Bus. See the manual for
239details.
240
241+++
242*** `dbus-init-bus' supports private connections.
243
244+++
245*** There is a new function `dbus-setenv'.
246
247+++
248** notifications.el supports now version 1.2 of the Notifications API.
249The function `notifications-get-capabilities' returns the supported
250server properties.
251
252** Tabulated List and packages derived from it
253
254*** New command `tabulated-list-sort', bound to `S', sorts the column
255at point, or the Nth column if a numeric prefix argument is given.
256
257** URL
258
259*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
260Previously, this slot stored semicolon-separated attribute-value pairs
261appended to some imap URLs, but this is not compatible with RFC 3986.
262So now the `filename' slot stores the entire path and query components
263and the `attributes' slot is always nil.
264
265*** New function `url-encode-url' for encoding a URI string.
266The `url-retrieve' function now uses this to encode its URL argument,
267in case that is not properly encoded.
268
269** Obsolete packages:
270
271*** assoc.el
272In most cases, assoc+member+push+delq work just as well.
273And in any case it's just a terrible package: ugly semantics, terrible
274inefficiency, and not namespace-clean.
275
276*** bruce.el
277
278*** mailpost.el
279
280*** mouse-sel.el
281
282*** patcomp.el
283
284\f
285* New Modes and Packages in Emacs 24.2
286\f
287* Incompatible Lisp Changes in Emacs 24.2
288
289+++
290** Docstrings starting with `*' no longer indicate user options.
291Only variables defined using `defcustom' are considered user options.
292The function `user-variable-p' is now an obsolete alias for
293`custom-variable-p'.
294
295** `face-spec-set' no longer sets frame-specific attributes when the
296third argument is a frame (that usage was obsolete since Emacs 22.2).
297
298+++
299** The arguments of `dbus-register-signal' are no longer just strings,
300but keywords or keyword-string pairs. The old argument list will
301still be supported for Emacs 24.x.
302
303** The following obsolete variables and varaliases have been removed:
304
305*** `facemenu-unlisted-faces'
306*** `rmail-decode-mime-charset'
307
308\f
309* Lisp changes in Emacs 24.2
310
311** `defun' also accepts a (declare DECLS) form, like `defmacro'.
312The interpretation of the DECLS is determined by `defun-declarations-alist'.
313
314** `macro-declaration-function' is obsolete, use `macro-declarations-alist'.
315
316** New function `set-temporary-overlay-map'.
317
318** New macros `setq-local' and `defvar-local'.
319
320** New error type and new function `user-error'. Doesn't trigger the debugger.
321
322** Completion
323
324*** New function `completion-table-with-quoting' to handle completion
325in the presence of quoting, such as file completion in shell buffers.
326
327*** New function `completion-table-subvert' to use an existing completion
328table, but with a different prefix.
329
330** Time
331
332*** `current-time-string' no longer requires that its argument's year
333must be in the range 1000..9999. It now works with any year supported
334by the underlying C implementation.
335
336** `automount-dir-prefix' is obsolete.
337** `buffer-has-markers-at' is obsolete.
338\f
339* Changes in Emacs 24.2 on non-free operating systems
340
341** New configure.bat options on MS-Windows:
342
343*** --without-libxml2 omits support for libxml2, even if its presence
344is detected.
345
346** When invoked with the -nw switch to run on the Windows text-mode terminal,
347Emacs now supports mouse highlight, help-echo (in the echo area), and
348mouse-autoselect-window.
349
350\f
351* Installation Changes in Emacs 24.1
352
353** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
354to configure. Note that other libraries used by Emacs, RSVG and GConf,
355also depend on Gtk+. You can disable them with --without-rsvg and
356--without-gconf.
357
358** Emacs can be compiled with GnuTLS support.
359This happens by default if a suitably recent version of the library is
360found at build time. To prevent this, use the configure option
361`--without-gnutls'. See below for GnuTLS features.
362
363** Emacs can be compiled with SELinux support.
364This happens by default if a suitably recent version of the library is
365found at build time. To prevent this, use the configure option
366`--without-selinux'. See below for SELinux features.
367
368** Emacs can be compiled with ImageMagick support.
369This happens by default if a suitably recent version of the library is
370found at build time. To prevent this, use the configure option
371`--without-imagemagick'. See below for ImageMagick features.
372This feature is not available for the Nextstep or MS ports.
373
374** Emacs can be compiled with libxml2 support.
375This happens by default if a suitably recent version of the library is
376found at build time. To prevent this, use the configure option
377`--without-xml2'. See below for libxml2 features.
378
379** By default, the installed Info and man pages are compressed.
380You can disable this by configuring --without-compress-info.
381
382** New configure option --with-wide-int.
383With it, Emacs integers typically have 62 bits, even on 32-bit machines.
384On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
385to about 2 GiB.
386
387** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
388These provide no new functionality, they just remove the need to edit
389lib-src/Makefile by hand in order to use the associated features.
390
391** New configure option --enable-use-lisp-union-type.
392This is only useful for Emacs developers to debug certain types of bugs.
393This is not a new feature; only the configure flag is new.
394
395** The standalone programs digest-doc and sorted-doc are removed.
396Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
397
398** The standalone program `fakemail' is removed.
399If you need it, feedmail.el provides a superset of the functionality.
400
401\f
402* Startup Changes in Emacs 24.1
403
404** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
405command line arguments, and the EMACS_UNIBYTE environment variable, no
406longer have any effect. (They were declared obsolete in Emacs 23.)
407
408** New command line option `--no-site-lisp' removes site-lisp directories
409from load-path. -Q now implies this. This option does not affect the
410EMACSLOADPATH environment variable (and hence has no effect for
411Nextstep builds).
412
413\f
414* Changes in Emacs 24.1
415
416** Completion
417
418*** Many packages now use the `completion-at-point' command,
419rather than implementing separate completion commands.
420
421*** `completion-at-point' now handles tags and semantic completion.
422
423*** Completion in a non-minibuffer now tries to detect the end of completion
424and pops down the *Completions* buffer accordingly.
425
426*** New option `completion-cycle-threshold' allows completion cycling.
427
428*** New option `completion-category-overrides' for overriding the
429default completion style in certain circumstances.
430
431*** New completion style `substring'.
432
433*** Completion of buffer names uses `substring' completion by default.
434
435*** The option `widget-complete-field' has been removed.
436
437** Mail changes
438
439*** The first time you try sending mail, Emacs asks for a mail method.
440This is implemented by a new default for `send-mail-function', which
441is `sendmail-query-once'. This offers to use the smtpmail package, or
442to use the old defaults relying on external mail facilities
443(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
444`mailclient-send-it' on Windows).
445
446*** Typing C-c m in the buffer made by M-x report-emacs-bug transfers
447the report to your desktop's preferred mail client, if there is one.
448This uses either the "xdg-email" utility, or Mac OS's "open" command.
449
450*** See Changes in Specialized Modes and Packages for SMTPmail changes
451and Mail mode changes
452
453** Emacs server and client changes
454
455*** New option `server-port' specifies the port for TCP Emacs servers.
456
457*** New emacsclient argument -q/--quiet suppresses some status messages.
458
459*** New emacsclient argument --frame-parameters specifies the frame
460parameters of any newly-created graphical frame.
461
462*** If emacsclient shuts down due to Emacs signaling an error,
463its exit status is 1.
464
465*** New emacsclient argument --parent-id ID.
466This opens a client frame in parent X window ID, via XEmbed, similar
467to the --parent-id argument to Emacs.
468
469** Internationalization changes
470
471*** Emacs now supports display and editing of bidirectional text.
472Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
473displayed in the correct visual order as expected by users of those
474scripts. The display reordering is a "full bidirectionality" class
475implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
476with no RTL text should look exactly the same as before.
477
478**** New buffer-local variable `bidi-display-reordering'.
479To disable display reordering in a buffer, change this to nil.
480
481**** New buffer-local variable `bidi-paragraph-direction'.
482If nil (the default), Emacs determines the base direction of each
483paragraph from its text, as specified by the UBA. Setting the value
484to `right-to-left' or `left-to-right' forces a base direction on each
485paragraph.
486
487Paragraphs with right-to-left base direction are displayed starting at
488the right window edge.
489
490*** Enhanced support for characters with no glyphs in available fonts,
491or, on text terminals, characters that cannot be encoded by the
492terminal coding system. The new option `glyphless-char-display-control'
493specifies how to display them: as a hexadecimal code in a box, a thin
4941-pixel space, an empty box, etc.
495
496*** New input methods: farsi, farsi-translit, bulgarian-alt-phonetic.
497
498*** `nobreak-char-display' now also highlights Unicode hyphen chars
499(U+2010 and U+2011).
500
501*** New Hebrew translation of the Emacs Tutorial.
502Type `C-u C-h t' to choose it in case your language setup doesn't
503automatically select it.
504
505** An Emacs Lisp package manager is now included.
506This is a convenient way to download and install additional packages,
507from a package repository at http://elpa.gnu.org.
508
509*** M-x list-packages shows a list of packages, which can be
510selected for installation.
511
512*** New command `describe-package', bound to `C-h P'.
513
514*** By default, all installed packages are loaded automatically when
515Emacs starts up. To disable this, set `package-enable-at-startup' to
516nil. To specify the packages to load, customize `package-load-list'.
517
518** Custom theme changes
519
520*** New command `M-x customize-themes', which provides a convenient
521interface for enabling and disabling Custom themes.
522
523*** New option `custom-theme-load-path' is the load path for themes.
524Emacs no longer looks for Custom themes in `load-path'. The default
525value of `custom-theme-load-path' says to look for themes in
526`custom-theme-directory', followed by a subdirectory of
527`data-directory' named "themes/", which contains a small selection of
528built-in Custom themes.
529
530*** New option `custom-safe-themes' records known-safe theme files.
531If a theme is not in this list, Emacs queries before loading it, and
532offers to save the theme to `custom-safe-themes' automatically. By
533default, all themes included in Emacs are treated as safe.
534
535** Improved GTK integration
536
537*** GTK scroll-bars are now placed on the right by default.
538The function `set-scroll-bar-mode' can change this.
539
540*** GTK tool bars can have just text, just images or images and text.
541Customize `tool-bar-style' to choose the style. On a Gnome desktop,
542the default is taken from desktop settings.
543
544*** GTK tool bars can be placed on any edge of the frame.
545The frame-parameter tool-bar-position controls this. It takes the
546values top, left, right or bottom. The Options => Show/Hide menu has
547entries for this.
548
549*** The default colors for selected text (the `region' face) are taken
550from the GTK theme when Emacs is built with GTK.
551
552*** Emacs uses GTK tooltips by default if built with GTK.
553You can disable this by changing `x-gtk-use-system-tooltips' to nil.
554
555** Graphical interface changes
556
557*** On graphical displays, the mode-line no longer ends in dashes.
558Also, the first dash (which does not indicate anything) is just
559displayed as a space.
560
561*** `menu-bar-select-buffer-function' lets you choose another operation
562instead of `switch-to-buffer' when selecting an item in the Buffers menu.
563
564*** Lucid menus and dialogs can display antialiased fonts if Emacs is
565built with Xft. These fonts can be set via X resources, for example:
566Emacs.pane.menubar.font: Courier-12
567
568** Exiting changes
569
570*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
571or if it receives a SIGINT signal in batch mode.
572
573*** `kill-emacs-hook' is now also run in batch mode.
574Third-party code which adds to `kill-emacs-hook' should check if they
575do the right thing in batch mode.
576
577** Scrolling changes
578
579*** New scrolling commands `scroll-up-command' and `scroll-down-command'
580(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
581of buffer at first key-press (instead they move to top/bottom of buffer)
582when `scroll-error-top-bottom' is non-nil.
583
584*** New option `scroll-error-top-bottom' (see above).
585
586*** New scrolling commands `scroll-up-line' and `scroll-down-line'
587scroll a line instead of full screen.
588
589*** New property `scroll-command' should be set on a command's symbol to
590define it as a scroll command affected by `scroll-preserve-screen-position'.
591
592*** If you customize `scroll-conservatively' to a value greater than 100,
593Emacs will never recenter point in the window when it scrolls due to
594cursor motion commands or commands that move point (e.f., `M-g M-g').
595Previously, you needed to use `most-positive-fixnum' as the value of
596`scroll-conservatively' to achieve the same effect.
597
598*** "Aggressive" scrolling now honors the scroll margins.
599If you customize `scroll-up-aggressively' or
600`scroll-down-aggressively' and move point off the window, Emacs now
601scrolls the window so as to avoid positioning point inside the scroll
602margin.
603
604** Basic SELinux support has been added.
605This requires Emacs to be linked with libselinux at build time.
606
607*** Emacs preserves the SELinux file context when backing up.
608Also, the function `copy-file' has an extra optional argument for
609preserving SELinux context, and the return value of `backup-buffer'
610now includes the SELinux context.
611
612*** New functions `file-selinux-context' and `set-file-selinux-context'
613get and set the SELinux context of a file.
614
615** Trash changes
616
617*** `delete-by-moving-to-trash' now only affects commands that specify
618trashing. This avoids inadvertently trashing temporary files.
619
620*** Calling `delete-file' or `delete-directory' with a prefix argument
621now forces true deletion, regardless of `delete-by-moving-to-trash'.
622
623** File- and directory-local variable changes
624
625*** You can stop directory local vars from applying to subdirectories.
626Add an element (subdirs . nil) to the alist portion of any variables
627settings to indicate that the section should not apply to
628subdirectories.
629
630*** Directory local variables can apply to some file-less buffers.
631Affected modes include dired, vc-dir, and log-edit. For example,
632adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
633turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
634`hack-dir-local-variables-non-file-buffer' to support this.
635
636*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
637Instead, use "eval: (minor-mode 1)".
638
639*** The variable `inhibit-first-line-modes-regexps' has been renamed
640to `inhibit-local-variables-regexps'. As the name suggests, it now
641applies to ALL file local variables, not just -*- lines. The
642associated `inhibit-first-line-modes-suffixes' has been renamed in the
643corresponding way.
644
645** Window changes
646
647*** The `quit-window' command now restores the last buffer displayed
648in the quitted window.
649
650*** Resizing an Emacs frame now preserves proportional window sizes,
651modulo restrictions like window minimum sizes and fixed-size windows.
652
653*** The behavior of `display-buffer' is now customizable in detail.
654
655**** New option `display-buffer-base-action' specifies a list of
656user-determined display "actions" (functions and optional arguments
657for choosing the displaying window).
658
659This takes precedence over the default display action, which is
660specified by `display-buffer-fallback-action'.
661
662**** New option `display-buffer-alist' maps buffer name regexps to
663display actions, taking precedence over `display-buffer-base-action'.
664
665*** New option `window-combination-limit'.
666The new option `window-combination-limit' allows to return the space
667obtained for resizing or creating a window more reliably to the window
668from which such space was obtained.
669
670*** New option `window-combination-resize'.
671The new option `window-combination-resize' allows to split a window that
672otherwise cannot be split because it's too small by stealing space from
673other windows in the same combination. Subsequent resizing or deletion
674of the window will resize all windows in the same combination as well.
675
676*** New option `frame-auto-hide-function' lets you choose between
677iconifying or deleting a frame when burying a buffer in a dedicated
678frame, or quitting a window showing a buffer in a frame of its own.
679
680*** New commands `maximize-window' and `minimize-window'.
681These maximize and minimize the size of a window within its frame.
682
683*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
684These functions allow to navigate through the live buffers that have
685been shown in a specific window.
686
687** Minibuffer changes
688
689*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
690This is handy for minibuffer-only frames, and is also used for the feature
691where mouse-1 pops up *Messages*"', which can now easily be changed.
692
693*** Minibuffers set `truncate-lines' to nil.
694If you want to change the value to something else, you could use
695for example `minibuffer-setup-hook'.
696
697** `auto-mode-case-fold' is now enabled by default.
698
699** `backup-by-copying-when-mismatch' now defaults to t.
700
701** New basic faces `error', `warning', `success'.
702These are used to highlight text indicating failure, caution or
703successful operation.
704
705** New option `list-colors-sort' defines the color sort order
706for `list-colors-display'.
707
708** The variable `focus-follows-mouse' now always defaults to nil.
709
710\f
711* Editing Changes in Emacs 24.1
712
713** Search changes
714
715*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
716`isearch-yank-line'.
717
718*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
719`isearch-yank-kill'.
720
721*** M-s C-e in Isearch is now bound to `isearch-yank-line'.
722
723** New commands `count-words-region' and `count-words'.
724
725*** M-= is bound to `count-words-region', not `count-lines-region'.
726The `count-words-region' command, when called interactively, reports
727the number of lines, words, and characters in the region. It is a
728superset of the old `count-lines-region', which is now an obsolete
729alias for it.
730
731** The command `just-one-space' (M-SPC), if given a negative argument,
732also deletes newlines around point.
733
734** Deletion changes
735
736*** New option `delete-active-region'.
737If non-nil, [delete] and DEL delete the region if it is active and no
738prefix argument is given. If set to `kill', those commands kill
739instead.
740
741*** New command `delete-forward-char', bound to [delete].
742This is meant for interactive use, and obeys `delete-active-region'.
743The command `delete-char' does not obey `delete-active-region'.
744
745*** `delete-backward-char' is now a Lisp function.
746Apart from obeying `delete-active-region', its behavior is unchanged.
747However, the byte compiler now warns if it is called from Lisp; Lisp
748callers should use delete-char with a negative argument instead.
749
750*** The option `mouse-region-delete-keys' has been deleted.
751
752** Selection changes.
753
754The default handling of clipboard and primary selections has been
755changed to conform with modern X applications. In short, most
756commands for killing and yanking text now use the clipboard, while
757mouse commands use the primary selection.
758
759In the following, we provide a list of these changes, followed by a
760list of steps to get the old behavior back if you prefer that.
761
762*** `select-active-regions' now defaults to t.
763Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
764the kill ring. The selected text is put in the primary selection, if
765the system possesses a separate primary selection facility (e.g. X).
766
767**** `select-active-regions' also accepts a new value, `only'.
768This means to only set the primary selection for temporarily active
769regions (usually made by mouse-dragging or shift-selection);
770"ordinary" active regions, such as those made with C-SPC followed by
771point motion, do not alter the primary selection.
772
773**** `mouse-drag-copy-region' now defaults to nil.
774
775*** mouse-2 is now bound to `mouse-yank-primary'.
776This pastes from the primary selection, ignoring the kill-ring.
777Previously, mouse-2 was bound to `mouse-yank-at-click'.
778
779*** `x-select-enable-clipboard' now defaults to t on all platforms.
780
781*** `x-select-enable-primary' now defaults to nil.
782Thus, commands that kill text or copy it to the kill-ring (such as
783M-w, C-w, and C-k) also use the clipboard---not the primary selection.
784
785**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
786exactly equivalent to M-w, C-w, and C-y respectively.
787
788**** Note that on MS-Windows, `x-select-enable-clipboard' was already
789non-nil by default, as Windows does not support the primary selection
790between applications.
791
792*** To return to the previous behavior, do the following:
793
794**** Change `select-active-regions' to nil.
795**** Change `mouse-drag-copy-region' to t.
796**** Change `x-select-enable-primary' to t (on X only).
797**** Change `x-select-enable-clipboard' to nil.
798**** Bind `mouse-yank-at-click' to mouse-2.
799
800*** Support for X cut buffers has been removed.
801
802*** X clipboard managers are now supported.
803To inhibit this, change `x-select-enable-clipboard-manager' to nil.
804
805** New command `C-x r N' (`rectangle-number-lines') numbers the lines
806in the current rectangle. With a prefix argument, this prompts for a
807number to count from and for a format string.
808
809** `redisplay-dont-pause' now defaults to t.
810This makes Emacs feel more responsive to editing commands that arrive
811at high rate, e.g. if you lean on some key, because stopping redisplay
812in the middle (when this variable is nil) forces more expensive
813updates later on, and Emacs appears to be unable to keep up.
814
815** The behavior of <TAB> for active regions in Text mode has changed.
816In Text and related modes, typing <TAB> (`indent-for-tab-command')
817when the region is active causes Emacs to indent all the lines in the
818region, aligning them with the line previous to the first line in the
819region (or with the left margin if there is no previous line).
820
821** When `occur' is called with a prefix argument, matching strings are
822collected into the `*Occur*' buffer without line numbers. If there
823are parenthesized subexpressions in the specified regexp, `occur'
824reads replacement text that may contain \\& and \\N whose convention
825follows `replace-match'.
826
827\f
828* Changes in Specialized Modes and Packages in Emacs 24.1
829
830** Archive Mode has basic support for browsing and updating 7z archives.
831
832** BibTeX mode
833
834*** BibTeX mode now supports biblatex.
835Use the variable `bibtex-dialect' to select different BibTeX dialects.
836`bibtex-entry-field-alist' is now an obsolete alias for
837`bibtex-BibTeX-entry-alist'.
838
839*** New command `bibtex-search-entries', bound to C-c C-a.
840
841*** New `bibtex-entry-format' option `sort-fields', disabled by default.
842
843*** New variable `bibtex-search-entry-globally'.
844
845** Browse-url
846
847*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
848
849*** The default browser used by the package is now the "xdg-open" program,
850on platforms that support it. This calls your desktop's preferred browser.
851
852** Calendar, Diary, and Appt
853
854*** Diary entries can contain non-printing "comments".
855See the variable `diary-comment-start'.
856
857*** Appointments can specify their individual warning times.
858See the variable `appt-warning-time-regexp'.
859
860*** The function specified by `appt-disp-window-function' may be passed
861lists of arguments if multiple appointments are due at similar times.
862If you are using a custom function for this, you should update it.
863
864*** New function `diary-hebrew-birthday'.
865
866*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
867may no longer be nil, but must all be strings.
868
869*** The obsolete (since Emacs 22.1) method of enabling the appt
870package by adding `appt-make-list' to `diary-hook' has been removed.
871Use `appt-activate' instead.
872
873*** Some appt variables (obsolete since Emacs 22.1) have been removed:
874appt-issue-message (use the function appt-activate)
875appt-visible/appt-msg-window (use the variable appt-display-format)
876
877*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
878view-diary-entries, list-diary-entries, show-all-diary-entries
879
880** CC Mode
881
882*** New feature to "guess" the style in an existing buffer.
883The main entry point is M-x c-guess.
884
885*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
886
887*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
888Thus C-M-a will, by default, go to the beginning of the immediate function,
889not the top level.
890
891*** "Macros with semicolons" can be registered for correct indentation.
892Where such a macro ends a line (no semicolon) the next statement is no longer
893parsed as a statement continuation.
894
895** Comint and modes derived from it use the standard completion code.
896
897** Compilation mode
898
899*** Compilation mode can be used without Font Lock mode.
900`compilation-parse-errors-function' is now obsolete.
901
902*** New variable `compilation-filter-start', which is bound while
903`compilation-filter-hook' runs. It records the start position of the
904text inserted by `compilation-filter'.
905
906*** `compilation-error-screen-columns' and `compilation-first-column'
907are obeyed in the editing buffer. So programming language modes can
908set them, whereas previously only the value in the *Compilation*
909buffer was used.
910
911** Customize
912
913*** Customize buffers now contain a search field.
914The search is performed using `customize-apropos'.
915To turn off the search field, set `custom-search-field' to nil.
916
917*** Custom options now start out hidden if at their default values.
918Use the arrow to the left of the option name to toggle visibility.
919
920*** custom-buffer-sort-alphabetically now defaults to t.
921
922*** The color widget now has a "Choose" button, which allows you to
923choose a color via `list-colors-display'.
924
925** D-Bus
926
927*** It is now possible to access buses other than the default system
928or session bus.
929
930*** The `dbus-register-method' and `dbus-register-property' functions
931optionally do not register names.
932
933*** The new function `dbus-register-service' registers a known service
934name on a D-Bus without also registering a property or a method.
935
936** Dired-x
937
938*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
939if called with a prefix argument, read a file name from the minibuffer
940instead of using the current buffer.
941
942*** The "dired local variables" feature of Dired-x is obsolete.
943The standard directory local variables feature replaces it.
944
945** ERC changes
946
947*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
948controlling attempts to autojoin a channel.
949
950*** New variable `erc-coding-system-precedence': If we use `undecided'
951as the server coding system, this variable will then be consulted.
952The default is to decode strings that can be decoded as utf-8 as
953utf-8, and do the normal `undecided' decoding for the rest.
954
955** Eshell changes
956
957*** The default value of `eshell-directory-name' has changed
958to be an "eshell" directory in `user-emacs-directory'.
959The old "~/.eshell/" directory is still used if it exists, though.
960
961** gdb-mi
962
963*** The M-x gdb command now uses the GDB Machine Interface protocol.
964It now supports multithread non-stop debugging and simultaneous
965debugging of several threads.
966
967** Image mode
968
969*** RET (`image-toggle-animation') toggles animation, if applicable.
970Animation plays once, unless the option `image-animate-loop' is non-nil.
971
972** Info
973
974*** New command M-x info-display-manual displays a named Info manual.
975If that manual is already visited in some Info buffer, it displays
976that buffer. (This is handy if you have many manuals in many *info*
977buffers, and don't remember the name of the buffer visiting the manual
978you want to consult.) Otherwise, it loads and displays the manual.
979
980*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
981This is for compatibility with the stand-alone Info reader program,
982and also because `Info-edit' is a rarely used command that is disabled
983by default.
984
985** Mail mode changes (not Message mode)
986
987*** New command M-x mail-add-attachment for adding MIME attachments
988
989*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
990(Its name is misleading, since it has nothing to do with MIME
991attachments.) The old name is now an obsolete alias to the new name.
992
993** MH-E has been updated to MH-E version 8.3.1.
994See MH-E-NEWS for details.
995
996** Modula-2 mode provides auto-indentation.
997
998** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
999
1000** nXML mode no longer binds C-RET to `nxml-complete'.
1001Completion is now performed via `completion-at-point', bound to C-M-i
1002or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
1003default), this performs tag completion.
1004
1005** Org mode has been updated to version 7.8.09.
1006See ORG-NEWS for details.
1007
1008** Prolog mode has been completely revamped, with lots of additional
1009functionality such as more intelligent indentation, electricity,
1010support for more variants, including Mercury, and a lot more.
1011
1012** Rmail
1013
1014*** The command `rmail-epa-decrypt' decrypts OpenPGP data
1015in the Rmail incoming message.
1016
1017*** The variable `rmail-message-filter' no longer has any effect.
1018This change was made in Emacs 23.1 but was not advertised at the time.
1019Try using `rmail-show-message-hook' instead.
1020
1021** Shell mode
1022
1023*** M-x shell prompts for the shell path name if the default directory
1024is a remote file name and neither the environment variable $ESHELL nor
1025the variable `explicit-shell-file-name' is set.
1026
1027*** TAB is now bound to the standard `completion-at-point' command,
1028which now implements the pcomplete rules for shell command completion.
1029
1030** SMTPmail
1031
1032*** SMTPmail now uses encrypted connections (via STARTTLS) by default
1033if the mail server supports them. This uses either built-in GnuTLS
1034support, or the starttls.el library. Customize `smtpmail-stream-type'
1035to change this.
1036
1037*** The variable `smtpmail-auth-credentials' has been removed.
1038By default, the information is now stored in the file ~/.authinfo.
1039This was the default value of smtpmail-auth-credentials. If you had
1040customized smtpmail-auth-credentials to a list of user names and
1041passwords, those settings are not used. During your first connection
1042to the smtp server, Emacs will prompt for the user name and password,
1043and offer to save them to ~/.authinfo. Or you can manually copy the
1044credentials to ~/.authinfo. For example, if you had
1045
1046 (setq smtpmail-auth-credentials
1047 '(("mail.example.org" 25 "jim" "s!cret")))
1048
1049then the equivalent line in ~/.authinfo would be
1050
1051 machine mail.example.org port 25 login jim password s!cret
1052
1053See the auth-source manual for more information, e.g. on encrypting
1054the credentials file.
1055
1056*** The variable `smtpmail-starttls-credentials' has been removed.
1057If you had that set, you need to put
1058
1059 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
1060
1061in your ~/.authinfo file instead.
1062
1063** SQL mode
1064
1065*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
1066and `sql-oracle-scan-on'.
1067
1068*** New options controlling prompting for login parameters.
1069Each supported product has a custom variable `sql-*-login-params',
1070which is a list of the parameters to be prompted for before a
1071connection is established.
1072
1073*** The command `sql-product-interactive' now takes a prefix argument,
1074which causes it to prompt for an SQL product.
1075
1076*** Product-specific SQL interactive commands now take prefix arguments.
1077These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
1078given a prefix argument, prompt for a name for the SQL interactive
1079buffer. This reduces the need for calling `sql-rename-buffer'.
1080
1081*** SQL interactive modes suppress command continuation prompts, and
1082replace tabs with spaces. The first change impacts multiple line SQL
1083statements entered with C-j between each line, statements yanked into
1084the buffer and statements sent with `sql-send-*' functions. The
1085second prevents the MySQL and Postgres interpreters from listing
1086object name completions when sent text via `sql-send-*' functions.
1087
1088*** New command `sql-connect' starts a predefined SQLi session,
1089using the login parameters from `sql-connection-alist'.
1090
1091*** New "Save Connection" menu item in SQLi buffers.
1092This gathers the login params specified for the SQLi session, if it
1093was not started by a connection, and saves them as a new connection.
1094
1095*** New commands for listing database objects and details:
1096sql-list-all and sql-list-table.
1097
1098*** An API for manipulating SQL product definitions has been added.
1099
1100** TeX modes
1101
1102*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
1103
1104** Tramp
1105
1106*** New inline access method "ksu" (kerberized su).
1107
1108*** The following access methods are discontinued: "ssh1_old",
1109"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
1110
1111*** The user option `remote-file-name-inhibit-cache' controls whether
1112remote file attributes are cached for better performance.
1113
1114*** The option `ange-ftp-binary-file-name-regexp' has changed its
1115default value to "".
1116
1117*** Handlers for `file-selinux-context' and `set-file-selinux-context'
1118for remote machines which support SELinux.
1119
1120** New function `url-queue-retrieve', which behaves like url-retrieve,
1121but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
1122the degree of parallelism.
1123
1124** VC and related modes
1125
1126*** Support for pulling on distributed version control systems.
1127The command C-x v + (`vc-pull') runs a "pull" operation, if it is
1128supported (currently with Bzr, Git, and Mercurial), to update the
1129current branch and working tree. A prefix argument means to prompt
1130the user for specifics, e.g. a pull location.
1131
1132*** `vc-update' is now an alias for `vc-pull'.
1133
1134*** Support for merging on distributed version control systems.
1135The command C-x v m (`vc-merge') now runs a "merge" operation, if it
1136is supported (currently with Bzr, Git, and Mercurial), to merge
1137changes from another branch into the current one. It prompts for
1138specifics, e.g. a merge source.
1139
1140*** New option `vc-revert-show-diff' controls whether `vc-revert'
1141shows a diff while querying the user. It defaults to t.
1142
1143*** Log entries in some Log View buffers can be toggled to display a
1144longer description by typing RET (log-view-toggle-entry-display).
1145This is currently supported for Bzr, Git, and Mercurial (to support
1146another backend, define a `log-view-expanded-log-entry-function').
1147In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
1148use this to display the full log entry for the revision at point.
1149
1150*** New command `vc-ediff' allows visual comparison of two revisions
1151of a file similar to `vc-diff', but using ediff backend.
1152
1153*** The option `vc-initial-comment' was removed in Emacs 23.2, but
1154this was not advertised at the time.
1155
1156*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
1157Since Emacs 23, it has done the same thing as `toggle-read-only', but
1158this was not advertised at the time.
1159
1160** Obsolete modes
1161
1162*** abbrevlist.el
1163
1164*** erc-hecomplete.el (use erc-pcomplete.el instead)
1165
1166*** partial-completion-mode (complete.el) is obsolete.
1167You can get a comparable behavior with:
1168(setq completion-styles '(partial-completion initials))
1169(setq completion-pcm-complete-word-inserts-delimiters t)
1170
1171*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
1172
1173*** pgg is obsolete (use EasyPG instead).
1174
1175*** sregex.el is obsolete, since rx.el is a strict superset.
1176
1177*** s-region.el and pc-select.el are obsolete.
1178They are superseded by shift-select-mode, enabled by default since 23.1.
1179
1180*** vc-mcvs.el is obsolete (for lack of a maintainer).
1181
1182** Miscellaneous
1183
1184*** The Landmark game is now invoked with `landmark', not `lm'.
1185Its functions and variables have been similarly renamed.
1186
1187*** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
1188(This interfered with cua-mode.)
1189
1190*** f90.el has some support for Fortran 2008 syntax.
1191
1192*** `copyright-fix-years' can optionally convert consecutive years to ranges.
1193
1194*** New command `nato-region' converts text to NATO phonetic alphabet.
1195
1196\f
1197* New Modes and Packages in Emacs 24.1
1198
1199** Occur Edit mode applies edits made in *Occur* buffers to the
1200original buffers. It is bound to "e" in Occur mode.
1201
1202** New global minor mode electric-pair-mode.
1203When enabled, typing an open parenthesis automatically inserts the
1204matching closing one.
1205
1206** New global minor mode electric-indent-mode.
1207When enabled, typing certain characters triggers reindentation.
1208Major modes wishing to use this can set electric-indent-chars or
1209electric-indent-functions.
1210
1211** New global minor mode electric-layout-mode.
1212When enabled, typing certain characters automatically inserts newlines.
1213Major modes wishing to use this can set electric-layout-rules.
1214
1215** tabulated-list.el provides a generic major mode for tabulated data,
1216from which other modes can be derived.
1217
1218** pcase.el provides the ML-style pattern matching macro `pcase'.
1219
1220** secrets.el is an implementation of the Secret Service API, an
1221interface to password managers like GNOME Keyring or KDE Wallet. The
1222Secret Service API requires D-Bus for communication. The command
1223`secrets-show-secrets' offers a buffer with a visualization of the
1224secrets.
1225
1226** notifications.el provides an implementation of the Desktop
1227Notifications API. It requires D-Bus for communication.
1228
1229** soap-client.el supports access to SOAP web services from Emacs.
1230soap-inspect.el is an interactive inspector for SOAP WSDL structures.
1231
1232** New generic mode, xmodmap-generic-mode, for xmodmap files.
1233
1234** New emacs-lock.el package.
1235The previous version has been moved to obsolete/old-emacs-lock.el.
1236Now, there is a proper minor mode `emacs-lock-mode'. Protection
1237against exiting Emacs and killing the buffer can be set separately.
1238The mechanism for automatically turning off protection for buffers
1239with dead inferior processes has been generalized.
1240
1241\f
1242* Incompatible Lisp Changes in Emacs 24.1
1243
1244** Passing a nil argument to a minor mode function call now ENABLES
1245the minor mode unconditionally. This is so that you can write e.g.
1246
1247 (add-hook 'text-mode-hook 'foo-mode)
1248
1249to enable foo-mode in Text mode buffers, removing the need for
1250`turn-on-foo-mode' style functions. This affects all mode commands
1251defined by `define-minor-mode'. If called interactively, the mode
1252command still toggles the minor mode.
1253
1254** The return value of `backup-buffer' has changed.
1255It is now a list of three elements, where the second element is a list
1256describing the original file's SELinux context. If Emacs or the
1257system lacks SELinux support, the context list is (nil nil nil nil).
1258See "Basic SELinux support" above, under "Changes in Emacs 24.1".
1259
1260** `char-direction-table' and the `char-direction' function were deleted.
1261They were buggy and inferior to the new support of bidirectional
1262editing introduced in Emacs 24. If you need the bidirectional
1263properties of a character, use `get-char-code-property' with the last
1264argument `bidi-class'.
1265
1266** `copy-directory' now copies the source directory as a subdirectory
1267of the target directory, if the latter is an existing directory. The
1268new optional arg COPY-CONTENTS, if non-nil, makes the function copy
1269the contents directly into a pre-existing target directory.
1270
1271** For mouse click input events in the text area, the Y pixel
1272coordinate in the POSITION list now counts from the top of the text
1273area, excluding any header line. Previously, it counted from the top
1274of the header line.
1275
1276** Support for "old-style" backquotes, obsolete for 10+ years, has
1277been further reduced. Now a backquote not followed by a space is
1278always treated as a "new-style" backquote. Please remove all
1279"old-style" backquotes from your code. If your code uses backquotes
1280as documented in the Elisp manual, and compiles without warning, then
1281you have nothing to do in this regard. Code not following the
1282appropriate conventions may fail to compile.
1283
1284The most common cause of trouble seems to be an old-style backquote
1285followed by a newline. Another cause of trouble is vector notation
1286for key sequence notation: instead of [(control ,)] and [(control ')],
1287you should write [(control ?,)] and [(control ?')], which will work in
1288older Emacsen too.
1289
1290** The macro `eval-at-startup' was removed in Emacs 23.2, but this
1291was not advertised at the time. The function `custom-initialize-delay'
1292replaced all known uses.
1293
1294** `view-buffer' now treats special mode-class in the same way that
1295`view-file' has since Emacs 22 (i.e. it won't enable View mode if the
1296major mode is special).
1297
1298** Menu and tool bar changes
1299
1300*** During startup, Emacs no longer adds entries for `menu-bar-lines'
1301and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
1302With these alist entries omitted, `make-frame' checks the value of the
1303variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
1304a menu-bar or tool-bar, respectively. If the alist entries are added,
1305they override the value of `menu-bar-mode'/`tool-bar-mode'.
1306
1307*** The menu bar bindings's caches are not used any more.
1308Use (where-is-internal <def> nil t) instead.
1309
1310** Regions created by mouse dragging are now normal active regions,
1311similar to those created by shift-selection (see Selection changes
1312above). In previous Emacs versions, these regions were delineated by
1313`mouse-drag-overlay'; that variable has been removed.
1314
1315** The fourth argument of `filter-buffer-substring' has been removed.
1316If you want to remove text properties from the final result, simply
1317pass the result through substring-no-properties.
1318
1319** cl.el no longer provides `cl-19'.
1320
1321** The following obsolete functions and aliases have been removed
1322(the appropriate new function is given in parentheses; "not needed"
1323means you can just remove all calls to the function in question):
1324
1325*** `comint-kill-output' (`comint-delete-output')
1326*** `decompose-composite-char' (`char-to-string')
1327*** `outline-visible' (`outline-invisible-p')
1328*** `internal-find-face' (`facep')
1329*** `internal-get-face' (`facep and check-face')
1330*** `frame-update-faces' (not needed)
1331*** `frame-update-face-colors' (`frame-set-background-mode')
1332*** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
1333*** `x-make-font-bold and x-make-font-demibold (`make-face-bold')
1334*** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
1335*** `x-make-font-bold-italic' (`make-face-bold-italic')
1336*** `x-make-font-unbold' (`make-face-unbold')
1337*** `x-make-font-unitalic' (`make-face-unitalic')
1338*** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
1339*** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
1340*** `iswitchb-default-keybindings' (`iswitchb-mode')
1341*** `char-bytes' (== 1)
1342*** `isearch-return-char' (`isearch-printing-char')
1343*** `make-local-hook' (not needed)
1344*** `set-screen-height' (`set-frame-height')
1345*** `set-screen-width' (`set-frame-width')
1346
1347** The following obsolete variables and varaliases have been removed
1348(the appropriate new variable is given in parentheses):
1349
1350*** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
1351*** `vc-header-alist' (`vc-BACKEND-header')
1352*** `directory-sep-char' (== ?/)
1353*** `font-lock-defaults-alist' (`font-lock-defaults')
1354*** `e' (`float-e').
1355
1356** The following obsolete files were removed:
1357sc.el, x-menu.el, rnews.el, rnewspost.el
1358
1359** The format of the finder-inf.el file has changed, since the Finder
1360mechanism is now based on the package system. The variable
1361`finder-package-info' is replaced by `package--builtins' and
1362`finder-keywords-hash'.
1363
1364** When generating autoloads, `update-directory-autoloads' no longer
1365assumes every inspected file is in your `load-path'. It instead
1366generates relative names according to the current `load-path'.
1367
1368\f
1369* Lisp changes in Emacs 24.1
1370
1371** Code can now use lexical scoping by default instead of dynamic scoping.
1372The `lexical-binding' variable enables lexical scoping for local
1373variables. It is typically set via a file-local variable in the first
1374line of the file, in which case it applies to all the code in that
1375file.
1376
1377*** `eval' takes a new optional argument `lexical' to choose the new lexical
1378binding instead of the old dynamic binding mode.
1379
1380*** Lexically scoped interpreted functions are represented with a new form
1381of function value which looks like (closure ENV ARGS &rest BODY).
1382
1383*** New macro `letrec' to define recursive local functions.
1384
1385*** `defvar' and `defconst' now mark the variable as special (dynamic).
1386So do `defcustom' and other forms that call `defvar' as a subroutine.
1387
1388*** New function `special-variable-p' to check whether a variable is
1389declared as dynamically bound.
1390
1391*** The form ((lambda ...) ...) is deprecated.
1392
1393** An Emacs Lisp testing tool is now included.
1394Emacs Lisp developers can use this tool to write automated tests for
1395their code. See the ERT info manual for details.
1396
1397** Changes for bidirectional display and editing
1398
1399*** New function `current-bidi-paragraph-direction'.
1400This returns the base direction of the paragraph at point.
1401
1402*** New function `bidi-string-mark-left-to-right'.
1403Given a string containing characters from right-to-left scripts, this
1404function returns another string which can be safely inserted into a
1405buffer, such that any following text will be always displayed to the
1406right of that string. (This works by appending an invisible Unicode
1407"LEFT-TO-RIGHT MARK" character if the argument string might need it.)
1408
1409This is useful when the buffer has overall left-to-right paragraph
1410direction and you need to insert a string whose contents are not known
1411in advance, without disrupting the layout of the line.
1412
1413** Window changes
1414
1415*** Window tree functions are accessible in Elisp.
1416Functions are provided to return the parent, siblings or child windows
1417of any window including internal windows (windows not associated with a
1418buffer) in the window tree.
1419
1420**** New function `window-valid-p' gives non-nil for live and internal
1421windows.
1422
1423**** Window manipulation can deal with internal windows.
1424Many window handling functions like `split-window', `delete-window', or
1425`delete-other-windows' as well as the window resizing functions can now
1426act on any window including internal ones.
1427
1428*** window-total-height/-width vs window-body-height/-width.
1429The function `window-height' has been renamed to `window-total-height'
1430and `window-width' has been renamed to `window-body-width'. The old
1431names are provided as aliases. Two new functions `window-total-width'
1432and `window-body-height' are provided.
1433
1434*** Window parameters specific to window handling functions.
1435For each window you can specify a parameter to override the default
1436behavior of a number of functions like `split-window', `delete-window'
1437and `delete-other-windows'. The variable `ignore-window-parameters'
1438allows to ignore processing such parameters.
1439
1440*** New semantics of third argument of `split-window'.
1441The third argument of `split-window' has been renamed to SIDE and can be
1442set to any of the values 'below, 'right, 'above, or 'left to make the
1443new window appear on the corresponding side of the window that shall be
1444split. Any other value of SIDE will cause `split-window' to split the
1445window into two side-by-side windows as before.
1446
1447*** Window resizing functions.
1448A new standard function for resizing windows called `window-resize' has
1449been introduced. This and all other functions for resizing windows no
1450longer delete any windows when they become too small.
1451
1452*** Deleting the selected window now selects the most recently selected
1453live window on that frame instead.
1454
1455*** `adjust-window-trailing-edge' adjustments.
1456`adjust-window-trailing-edge' can now deal with fixed-size windows and
1457is able to resize other windows if a window adjacent to the trailing
1458edge cannot be shrunk any more. This makes its behavior more similar to
1459that of Emacs 21 without compromising, however, its inability to delete
1460windows which was introduced in Emacs 22.
1461
1462*** Window-local buffer lists.
1463Windows now have local buffer lists. This means that removing a buffer
1464from display in a window will preferably show the buffer previously
1465shown in that window with its previous window-start and window-point
1466positions. This also means that the same buffer may be automatically
1467shown twice even if it already appears in another window.
1468
1469*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
1470which if non-nil requires the buffer to be displayed in the currently
1471selected window, signaling an error otherwise. If nil, another window
1472can be used, e.g. if the selected one is strongly dedicated.
1473
1474*** `split-window-vertically' and `split-window-horizontally' renamed
1475to `split-window-below' and `split-window-right' respectively.
1476The old names are kept as aliases.
1477
1478*** Display actions
1479
1480**** The second arg to `display-buffer' and `pop-to-buffer' is now
1481named ACTION, and takes a display action of the same form as
1482`display-buffer-base-action' (see Changes, above). A non-nil,
1483non-list value is treated specially, as the old meaning.
1484
1485**** New variable `display-buffer-overriding-action'.
1486
1487**** The procedure of `display-buffer' etc. to choose a window is
1488determined by combining `display-buffer-overriding-action',
1489`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
1490and `display-buffer-fallback-action'. The second and fourth of these
1491are user-customizable variables.
1492
1493See the docstring of `display-buffer' for details.
1494
1495*** New functions `window-state-get' and `window-state-put'.
1496These functions allow to save and restore the state of an arbitrary
1497frame or window as an Elisp object.
1498
1499** Completion
1500
1501*** New variable `completion-extra-properties' used to specify extra
1502properties of the current completion:
1503- :annotate-function, same as the old completion-annotate-function.
1504- :exit-function, function to call after completion took place.
1505
1506*** Functions on `completion-at-point-functions' can return any of the
1507properties valid for `completion-extra-properties'.
1508
1509*** `completion-annotate-function' is obsolete.
1510
1511*** New `metadata' method for completion tables. The metadata thus returned
1512can specify various details of the data returned by `all-completions':
1513- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
1514 used to select a style in completion-category-overrides.
1515- `annotation-function' to add annotations in *Completions*.
1516- `display-sort-function' to specify how to sort entries in *Completions*.
1517- `cycle-sort-function' to specify how to sort entries when cycling.
1518
1519*** `minibuffer-local-filename-must-match-map' is not used any more.
1520Instead, the bindings in `minibuffer-local-filename-completion-map'
1521are combined with `minibuffer-local-must-match-map'.
1522
1523*** New variable `completing-read-function' allows overriding the
1524behavior of `completing-read'.
1525
1526** `glyphless-char-display' can now distinguish between graphical and
1527text terminal display, via a char-table entry that is a cons cell.
1528
1529** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
1530Instead, the offending function is removed.
1531
1532** New hook types
1533
1534*** New function `run-hook-wrapped' for running an abnormal hook by
1535passing the hook functions as arguments to a "wrapping" function.
1536Like `run-hook-with-args-until-success', it stops at the first
1537non-nil return value.
1538
1539*** New macro `with-wrapper-hook' for running an abnormal hook as a
1540set of "wrapping" filters, similar to around advice.
1541(A version of this macro was actually added in Emacs 23.2 but was not
1542advertised at the time.)
1543
1544** Debugger changes
1545
1546*** New macro `condition-case-unless-debug' (this was actually added in
1547Emacs 23.1 as condition-case-no-debug, but not advertised)
1548
1549*** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
1550
1551*** Variable `stack-trace-on-error' removed.
1552
1553*** The debugger can now "continue" from an error, which means it will
1554jump to the error handler as if the debugger had not been invoked
1555instead of jumping all the way to the top-level.
1556
1557*** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
1558This can be useful when `inhibit-quit' is set.
1559
1560** The new function `server-eval-at' allows evaluation of Lisp forms on
1561named Emacs server instances.
1562
1563** `call-process' and `call-process-region' allow a `(:file "file")' spec
1564to redirect STDOUT to a file.
1565
1566** The function `format-time-string' now supports the %N directive,
1567for higher-resolution time stamps.
1568
1569** New input reading functions
1570
1571*** New function `read-char-choice' reads a restricted set of
1572characters, discarding any inputs not inside the set.
1573
1574*** The command `read-color' now requires a match for a color name
1575or RGB triplet, instead of signaling an error if the user provides
1576invalid input.
1577
1578**** `facemenu-read-color' is now an alias for `read-color'.
1579
1580** `image-library-alist' is renamed to `dynamic-library-alist'.
1581The variable is now used to load all kind of supported dynamic libraries,
1582not just image libraries. The previous name is still available as an
1583obsolete alias.
1584
1585** Syntax parsing changes
1586
1587*** New variable `syntax-propertize-function'.
1588This replaces `font-lock-syntactic-keywords' which is now obsolete.
1589This allows syntax-table properties to be set independently from font-lock:
1590just call syntax-propertize to make sure the text is propertized.
1591Together with this new variable come a new hook
1592syntax-propertize-extend-region-functions, as well as two helper functions:
1593syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
1594as-is; and syntax-propertize-rules which provides a new way to specify
1595syntactic rules.
1596
1597*** Syntax tables support a new "comment style c" additionally to style b.
1598
1599** New hook `post-self-insert-hook', run after `self-insert-command'.
1600
1601** frame-local variables cannot be let-bound any more.
1602
1603** Major and minor mode changes
1604
1605*** `set-auto-mode' now respects mode: local variables at the end of files,
1606as well as those in the -*- line.
1607
1608*** `prog-mode' is a new major mode from which programming modes
1609should be derived.
1610
1611**** `prog-mode-hook' can be used to enable features for programming
1612modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
1613on-the-fly spell checking for comments and strings.
1614
1615*** New hook `change-major-mode-after-body-hook', run by
1616`run-mode-hooks' just before any other mode hooks.
1617
1618*** Enabled globalized minor modes can be disabled in specific major modes.
1619If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
1620major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
1621
1622*** `define-minor-mode' accepts new keywords :variable, :after-hook.
1623
1624** File-handling changes
1625
1626*** `delete-file' and `delete-directory' now accept optional arg TRASH.
1627Trashing is performed if TRASH and `delete-by-moving-to-trash' are
1628both non-nil. Interactively, TRASH defaults to t, unless a prefix
1629argument is supplied (see Trash changes, above).
1630
1631*** New file predicates: `file-equal-p', `file-in-directory-p'.
1632
1633** Tool-bars can display separators.
1634Tool-bar separators are handled like menu separators in menu-bar maps,
1635i.e. via menu entries of the form `(menu-item "--")'.
1636
1637** Image API
1638
1639*** Animated images support (currently animated gifs only).
1640
1641**** `image-animated-p' returns non-nil if an image can be animated.
1642
1643**** `image-animate' animates a supplied image spec.
1644
1645**** `image-animate-timer' returns the timer object for an image that
1646is being animated.
1647
1648*** `image-extension-data' has been renamed to `image-metadata'.
1649The old name is an obsolete alias to the new one.
1650
1651*** Image mode can view any image type that ImageMagick supports.
1652This requires Emacs to be built with ImageMagick support.
1653
1654**** New function `imagemagick-types', defined if ImageMagick support
1655is enabled, returns a list of image file extensions that your
1656ImageMagick installation supports.
1657
1658**** New function `imagemagick-register-types' enables ImageMagick
1659image types in Image mode and in `create-image' and other helper
1660functions.
1661
1662**** New option `imagemagick-types-inhibit' excludes certain
1663ImageMagick image types from `imagemagick-register-types'.
1664
1665**** With ImageMagick support, there are extra Image mode commands to
1666resize and rotate images: `image-transform-fit-to-height',
1667`image-transform-fit-to-width', `image-transform-set-rotation', and
1668`image-transform-set-scale'.
1669
1670** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
1671passes it to the mail user agent function. This argument specifies an
1672action for returning to the caller after finishing with the mail. For
1673example, this is used by Rmail to optionally delete a mail window.
1674
1675** XML and HTML parsing
1676If Emacs is compiled with libxml2 support, there are two new
1677functions: `libxml-parse-html-region' (which parses "real world" HTML)
1678and `libxml-parse-xml-region' (which parses XML). Both return an
1679Emacs Lisp parse tree.
1680
1681** Networking and encryption changes
1682
1683*** `open-network-stream' can now be used to open an encrypted stream.
1684It now accepts an optional `:type' parameter for initiating a TLS
1685connection, directly or via STARTTLS. To do STARTTLS, additional
1686parameters (`:end-of-command', `:success', `:capabilities-command')
1687must also be supplied.
1688
1689*** New library gnutls.el.
1690The new function `gnutls-available-p' returns non-nil if Emacs is
1691built with GnuTLS support. The main entry points are
1692`open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
1693these functions through `open-network-stream', because that can
1694upgrade connections through STARTTLS opportunistically or use plain
1695SSL, depending on your needs. For debugging, set `gnutls-log-level'
1696greater than 0.
1697
1698*** New primitive `secure-hash' that supports many secure hash algorithms:
1699md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
1700sha1.el has been removed. The `sha1' feature is provided by default.
1701
1702** Isearch
1703
1704*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
1705
1706** Progress reporters can now "spin".
1707The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
1708now be nil, or omitted. This makes a "non-numeric" reporter. Each
1709time you call `progress-reporter-update' on that progress reporter,
1710with a nil or omitted VALUE argument, the reporter message is
1711displayed with a "spinning bar".
1712
1713** New variable `revert-buffer-in-progress-p' is true while a buffer is
1714being reverted, even if the buffer has a local `revert-buffer-function'.
1715
1716** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
1717If delayed-warnings-list is non-nil, the command loop calls
1718`delayed-warnings-hook' after `post-command-hook'. At present, this
1719is only used by Emacs on some platforms to display warnings during
1720startup, which might otherwise not be noticed. This uses the
1721functions `display-delayed-warnings' and `collapse-delayed-warnings'.
1722
1723** rx.el has a new `group-n' construct for explicitly numbered groups.
1724
1725** New function `make-composed-keymap' that constructs a new keymap
1726from multiple input maps. You can use this to make a keymap that
1727inherits from multiple maps, eg:
1728 (set-keymap-parent newmap (make-composed-keymap othermap parent))
1729
1730** New function `string-prefix-p'.
1731(This was actually added in Emacs 23.2 but was not advertised at the time.)
1732
1733** New reader macro ## that stands for the empty symbol.
1734This means that the empty symbol can now be read back. Also, #: by itself
1735(when not immediately followed by a possible symbol character) stands for
1736an empty uninterned symbol.
1737
1738** New math functions `isnan', `copysign', `frexp', `ldexp'.
1739
1740** The following functions and variables are obsolete:
1741
1742*** `tooltip-use-echo-area' is obsolete.
1743Rather than setting this to t, disable Tooltip mode instead.
1744
1745*** buffer-substring-filters is obsolete.
1746Use `filter-buffer-substring-functions' instead.
1747
1748*** `byte-compile-disable-print-circle' is obsolete.
1749
1750*** `deferred-action-list' and `deferred-action-function' are obsolete.
1751Use `post-command-hook' instead.
1752
1753*** `font-lock-maximum-size' is obsolete.
1754
1755\f
1756* Changes in Emacs 24.1 on non-free operating systems
1757
1758** On MS Windows, Emacs warns when using the obsolete init file _emacs,
1759and also when HOME is set to C:\ by default.
1760
1761** New configure.bat options
1762
1763*** --enable-checking builds Emacs with extra runtime checks.
1764
1765*** --distfiles specifies files to be included in binary distribution.
1766
1767*** --without-gnutls disables automatic GnuTLS detection.
1768
1769*** --lib for general library linkage, works with the USER_LIBS build variable.
1770
1771** New make target `dist' to create binary distribution for MS Windows.
1772
1773** The Lisp function `w32-default-color-map' is now obsolete.
1774(It is only used internally in the Emacs C code.)
1775
1776** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
1777reappear on mouse-over. (Requires OS X 10.6 or later.)
1778
1779** On Mac OS X, dragging a file into Emacs visits the file, like on
1780other platforms, rather than inserting its contents into the buffer.
1781
1782\f
1783----------------------------------------------------------------------
1784This file is part of GNU Emacs.
1785
1786GNU Emacs is free software: you can redistribute it and/or modify
1787it under the terms of the GNU General Public License as published by
1788the Free Software Foundation, either version 3 of the License, or
1789(at your option) any later version.
1790
1791GNU Emacs is distributed in the hope that it will be useful,
1792but WITHOUT ANY WARRANTY; without even the implied warranty of
1793MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1794GNU General Public License for more details.
1795
1796You should have received a copy of the GNU General Public License
1797along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
1798
1799\f
1800Local variables:
1801mode: outline
1802paragraph-separate: "[ \f]*$"
1803end: