NEWS markup for ImageMagick.
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29b7722a 1GNU Emacs NEWS -- history of user-visible changes.
5b87ad55 2
acaf905b 3Copyright (C) 2010-2012 Free Software Foundation, Inc.
5b87ad55 4See the end of the file for license conditions.
a933dad1 5
893db5bc 6Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
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7If possible, use M-x report-emacs-bug.
8
eb199145 9This file is about changes in Emacs version 24.
9a21d88b 10
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11See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12and NEWS.1-17 for changes in older Emacs versions.
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13
14You can narrow news to a specific version by calling `view-emacs-news'
15with a prefix argument or by typing C-u C-h C-n.
3f7194ed 16
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17
18Temporary note:
19 +++ indicates that the appropriate manual has already been updated.
20 --- means no change in the manuals is called for.
21When you add a new item, please add it without either +++ or ---
22so we will look at it and add it to the manual.
23
24\f
eb199145 25* Installation Changes in Emacs 24.1
09e18d03 26
a49ca6b9 27---
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28** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
29to configure. Note that other libraries used by Emacs, RSVG and GConf,
30also depend on Gtk+. You can disable them with --without-rsvg and
31--without-gconf.
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32
33---
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34** Emacs can be compiled with GnuTLS support.
35This happens by default if a suitably recent version of the library is
36found at build time. To prevent this, use the configure option
37`--without-gnutls'. See below for GnuTLS features.
338648ad 38
aded53ff 39---
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40** Emacs can be compiled with SELinux support.
41This happens by default if a suitably recent version of the library is
42found at build time. To prevent this, use the configure option
43`--without-selinux'. See below for SELinux features.
aded53ff 44
e547b051 45---
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46** Emacs can be compiled with ImageMagick support.
47This happens by default if a suitably recent version of the library is
48found at build time. To prevent this, use the configure option
49`--without-imagemagick'. See below for ImageMagick features.
c1f10868 50This feature is not available for the Nextstep or MS ports.
d9170db5 51
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52---
53** Emacs can be compiled with libxml2 support.
54This happens by default if a suitably recent version of the library is
55found at build time. To prevent this, use the configure option
56`--without-xml2'. See below for libxml2 features.
57
3fd50d5c 58---
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59** There is a new configure option --with-wide-int.
60With it, Emacs integers typically have 62 bits, even on 32-bit machines.
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61On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
62to about 2 GiB.
81eafe29 63
d064e6a6 64---
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65** By default, the installed Info and man pages are compressed.
66You can disable this by configuring --without-compress-info.
d064e6a6 67
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68---
69** There are new configure options:
70--with-mmdf, --with-mail-unlink, --with-mailhost.
71These provide no new functionality, they just remove the need to edit
72lib-src/Makefile by hand in order to use the associated features.
73
74---
75** There is a new configure option --enable-use-lisp-union-type.
76This is only useful for Emacs developers to debug certain types of bugs.
77This is not a new feature; only the configure flag is new.
041d709f 78
ddb54206 79---
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80** The standalone programs digest-doc and sorted-doc are removed.
81Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
82
83---
84** The standalone program `fakemail' is removed.
85If you need it, feedmail.el provides a superset of the functionality.
86
0bfd685e 87\f
eb199145 88* Startup Changes in Emacs 24.1
4a263588 89
fdeb32ec 90---
198a7a97 91** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
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92command line arguments, and the EMACS_UNIBYTE environment variable, no
93longer have any effect. (They were declared obsolete in Emacs 23.)
198a7a97 94
fdeb32ec 95+++
66b7b0fe 96** New command line option `--no-site-lisp' removes site-lisp directories
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97from load-path. -Q now implies this. This option does not affect the
98EMACSLOADPATH environment variable (and hence has no effect for
99Nextstep builds.)
66b7b0fe 100
0bfd685e 101\f
eb199145 102* Changes in Emacs 24.1
7841339b 103
3fd50d5c 104+++
041d709f 105** auto-mode-case-fold is now enabled by default.
2a847524 106
a2a25d24 107** Completion
fdeb32ec 108
e17d9003 109*** shell-mode uses pcomplete rules, with the standard completion UI.
3d992aa0 110+++
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111*** Many packages have been changed to use `completion-at-point'
112rather than their own completion code.
3d992aa0 113+++
de0bde62 114*** `completion-at-point' now handles tags and semantic completion.
27a16462 115---
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116*** Completion in a non-minibuffer now tries to detect the end of completion
117and pops down the *Completions* buffer accordingly.
de09aa52 118+++
a2a25d24 119*** Completion can cycle, depending on completion-cycle-threshold.
27a16462 120+++
a2a25d24 121*** New completion style `substring'.
939db9ac 122+++
620c53a6 123*** Completion style can be set per-category `completion-category-overrides'.
939db9ac 124+++
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125*** Completion of buffers now uses substring completion by default.
126
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127** Mail changes
128
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129+++
130*** The default of `send-mail-function' is now `sendmail-query-once',
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131which asks the user (once) whether to use the smtpmail package to send
132email, or to use the old defaults that rely on external mail
133facilities (`sendmail-send-it' on GNU/Linux and other Unix-like
134systems, and `mailclient-send-it' on Windows).
6870aaef 135
041d709f 136*** smtpmail changes
95f41d9a 137
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138**** smtpmail now uses encrypted connections (via STARTTLS) if the
139mail server supports them. It also uses the auth-source framework for
140getting credentials.
95f41d9a 141
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142**** The variable `smtpmail-auth-credentials' has been removed.
143That variable used to have the default value "~/.authinfo", in which
144case you won't see any difference. But if you changed it to be a list
145of user names and passwords, that setting is now ignored; you will be
146prompted for the user name and the password, which will then be saved
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147to ~/.authinfo. (To control where and how the credentials are stored,
148see the auth-source manual. You may want to change the auth-source
149preferences if you want to store the credentials encrypted, for
150instance.)
e2430e31 151
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152You can also manually copy the credentials to your ~/.authinfo file.
153For example, if you had
e2430e31 154
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155 (setq smtpmail-auth-credentials
156 '(("mail.example.org" 25 "jim" "s!cret")))
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157
158then the equivalent line in ~/.authinfo would be
159
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160 machine mail.example.org port 25 login jim password s!cret
161
162**** The variable `smtpmail-starttls-credentials' has been removed.
95f41d9a 163
cd1181db 164If you had that set, then you need to put
95f41d9a 165
041d709f 166 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
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167
168in your ~/.authinfo file instead.
169
b30941db 170*** Mail mode changes (this is the old Mail mode, not Message mode)
c3760c17 171+++
b30941db 172**** New command `mail-add-attachment' for adding MIME attachments
c3760c17 173---
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174**** The command `mail-attach-file' was renamed to `mail-insert-file'.
175The old name is now an obsolete alias to the new name.
c3760c17 176
041d709f 177** Emacs server and client changes
ddb54206 178+++
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179*** New option `server-port' specifies the port on which the Emacs
180server should listen.
181+++
182*** New emacsclient argument -q/--quiet suppresses some status messages.
183+++
184*** New emacsclient argument --frame-parameters can be used to set the
185frame parameters of a newly-created graphical frame.
186+++
8350f087 187*** If emacsclient shuts down as a result of Emacs signaling an
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188error, its exit status is 1.
189+++
190*** New emacsclient argument --parent-id ID.
191This opens a client frame in parent X window ID, via XEmbed, similar
192to the --parent-id argument to Emacs.
193
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194** Internationalization changes
195
f4b6ba46 196+++
d0ce9f8c 197*** Emacs now supports display and editing of bidirectional text.
f4b6ba46 198
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199Text that includes characters from right-to-left (RTL) scripts, such
200as Arabic, Farsi, or Hebrew, is displayed in the correct visual order
201as expected by users of those scripts. This display reordering is a
202"Full bidirectionality" class implementation of the Unicode
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203Bidirectional Algorithm. Buffers with no RTL text should look exactly
204the same as before.
f4b6ba46 205
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206For more information, see the node "Bidirectional Editing" in the
207Emacs Manual.
f4b6ba46 208
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209+++
210**** New buffer-local variable `bidi-display-reordering'.
211To disable display reordering in any given buffer, change this to nil.
d20e1419 212
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213+++
214**** New buffer-local variable `bidi-paragraph-direction'.
215If nil (the default), Emacs determines the base direction of each
216paragraph from its text, as specified by the Unicode Bidirectional
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217Algorithm.
218
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219Setting this to `right-to-left' or `left-to-right' forces a particular
220base direction on each paragraph in the buffer.
221
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222Paragraphs whose base direction is right-to-left are displayed
223starting at the right margin of the window.
224
d0ce9f8c 225+++
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226*** Enhanced support for characters with no glyphs in available fonts.
227If a character has no glyphs in any of the available fonts, Emacs
228normally displays it either as a hexadecimal code in a box or as a
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229thin 1-pixel space. In addition to these two methods, Emacs can
230display these characters as empty box, as an acronym, or not display
231them at all. To change how these characters are displayed, customize
232the variable `glyphless-char-display-control'.
233
041d709f 234On character terminals, these methods are used for characters that
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235cannot be encoded by the `terminal-coding-system'.
236
ddb54206 237---
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238*** New input methods for Farsi: farsi and farsi-translit.
239
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240+++
241*** `nobreak-char-display' now also highlights Unicode hyphen chars
242(U+2010 and U+2011).
243
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244---
245*** New translation of the Emacs Tutorial in Hebrew is available.
246Type `C-u C-h t' to choose it in case your language setup doesn't
247automatically select it.
248
041d709f 249** Improved GTK integration
da97a9e6 250+++
041d709f 251*** GTK scroll-bars are now placed on the right by default.
52834b6b 252Use `set-scroll-bar-mode' to change this.
da97a9e6 253+++
041d709f 254*** GTK tool bars can have just text, just images or images and text.
d8004abe 255Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
20fe03ad 256is taken from the desktop settings.
da97a9e6 257---
041d709f 258*** GTK tool bars can be placed on the left/right or top/bottom of the frame.
8b2dd508 259The frame-parameter tool-bar-position controls this. It takes the values
1c0d77cc 260top, left, right or bottom. The Options => Show/Hide menu has entries
8b2dd508 261for this.
d366bd53 262+++
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263*** The colors for selected text (the `region' face) are taken from
264the GTK theme when Emacs is built with GTK.
d366bd53 265+++
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266*** Emacs uses GTK tooltips by default if built with GTK. You can turn that
267off by customizing x-gtk-use-system-tooltips.
16a91140 268
35137ed3 269+++
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270** New basic faces `error', `warning', `success' are available to
271highlight strings that indicate failure, caution or successful operation.
272
b22b1918 273---
1ecb2d3f 274** Lucid menus and dialogs can display antialiased fonts if Emacs is built
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275with Xft. To change font, use the X resource font, for example:
276Emacs.pane.menubar.font: Courier-12
99852628 277
21100e7d 278+++
917794d5 279** On graphical displays, the mode-line no longer ends in dashes.
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280Also, the first dash (which does not indicate anything) is just
281displayed as a space.
917794d5 282
a49ca6b9 283+++
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284** Basic SELinux support has been added.
285This requires Emacs to be linked with libselinux at build time.
286
a49ca6b9 287+++
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288*** Emacs preserves the SELinux file context when backing up, and
289optionally when copying files. To this end, copy-file has an extra
290optional argument, and backup-buffer and friends include the SELinux
291context in their return values.
b7d65a5f 292
a49ca6b9 293+++
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294*** The new functions file-selinux-context and set-file-selinux-context
295get and set the SELinux context of a file.
bfd779dd 296---
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297*** Tramp offers handlers for file-selinux-context and set-file-selinux-context
298for remote machines which support SELinux.
299
041d709f 300** Changes for exiting Emacs
ddb54206 301+++
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302*** The function kill-emacs is now run upon receipt of the signals
303SIGTERM and SIGHUP, and upon SIGINT in batch mode.
ddb54206 304+++
041d709f 305*** kill-emacs-hook is now also run in batch mode.
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306If you have code that adds something to kill-emacs-hook, you should
307consider if it is still appropriate to add it in the noninteractive case.
9c524fcb 308
041d709f 309** Scrolling changes
550f41cd 310+++
041d709f 311*** New scrolling commands `scroll-up-command' and `scroll-down-command'
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312(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
313of buffer at first key-press (instead move to top/bottom of buffer)
550f41cd 314when `scroll-error-top-bottom' is non-nil.
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315+++
316*** New variable `scroll-error-top-bottom' (see above).
e7a3ff06 317+++
041d709f 318*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 319scroll a line instead of full screen.
550f41cd 320+++
041d709f 321*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 322define it as a scroll command affected by `scroll-preserve-screen-position'.
d0f69533 323+++
041d709f 324*** If you customize `scroll-conservatively' to a value greater than 100,
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325Emacs will never recenter point in the window when it scrolls due to
326cursor motion commands or commands that move point (e.f., `M-g M-g').
327Previously, you needed to use `most-positive-fixnum' as the value of
328`scroll-conservatively' to achieve the same effect.
d0f69533 329---
041d709f 330*** ``Aggressive'' scrolling now honors the scroll margins.
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331If you customize `scroll-up-aggressively' or
332`scroll-down-aggressively' and move point off the window, Emacs now
333scrolls the window so as to avoid positioning point inside the scroll
334margin.
335
f1a5d776 336** Trash changes
04e2ce72 337+++
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338*** `delete-by-moving-to-trash' now only affects commands that specify
339trashing. This avoids inadvertently trashing temporary files.
04e2ce72 340+++
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341*** Calling `delete-file' or `delete-directory' with a prefix argument
342now forces true deletion, regardless of `delete-by-moving-to-trash'.
343
05f77e38 344+++
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345** New option `list-colors-sort' defines the color sort order
346for `list-colors-display'.
347
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348** An Emacs Lisp package manager is now included.
349This is a convenient way to download and install additional packages,
3fd50d5c 350from a package repository at http://elpa.gnu.org.
d43f5a42 351+++
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352*** `M-x list-packages' shows a list of packages, which can be
353selected for installation.
d43f5a42 354+++
cb6c4991 355*** New command `describe-package', bound to `C-h P'.
d43f5a42 356+++
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357*** By default, all installed packages are loaded and activated
358automatically when Emacs starts up. To disable this, set
359`package-enable-at-startup' to nil. To change which packages are
360loaded, customize `package-load-list'.
361
f065864f 362** Custom Themes
b0d7d8af 363+++
f065864f 364*** `M-x customize-themes' lists Custom themes which can be enabled.
b0d7d8af 365+++
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366*** New option `custom-theme-load-path' is the load path for themes.
367Emacs no longer looks for custom themes in `load-path'. The default
368is to search in `custom-theme-directory', followed by a built-in theme
369directory named "themes/" in `data-directory'.
b0d7d8af 370+++
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371*** New option `custom-safe-themes' records known-safe theme files.
372If a theme is not in this list, Emacs queries before loading it, and
373offers to save the theme to `custom-safe-themes' automatically. By
374default, all themes included in Emacs are treated as safe.
278f6845 375
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376** The user option `remote-file-name-inhibit-cache' controls whether
377the remote file-name cache is used for read access.
378
041d709f 379** File- and directory-local variable changes
b8f82dc1 380+++
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381*** You can stop directory local vars from applying to subdirectories.
382Add an element (subdirs . nil) to the alist portion of any variables
383settings to indicate that the section should not apply to
384subdirectories.
89bd9ccd 385+++
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386*** Directory local variables can apply to some file-less buffers.
387Affected modes include dired, vc-dir, and log-edit. For example,
388adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
389turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
390`hack-dir-local-variables-non-file-buffer' to support this.
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391+++
392*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
393Instead, use "eval: (minor-mode 1)".
c136e5cd 394
61086eb6 395+++
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396*** The variable `inhibit-first-line-modes-regexps' has been renamed
397to `inhibit-local-variables-regexps'. As the name suggests, it now
398applies to ALL file local variables, not just -*- mode ones.
399The associated `inhibit-first-line-modes-suffixes' has been renamed
400in the corresponding way.
401
fdeb32ec 402+++
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403** The variable `focus-follows-mouse' now always defaults to nil.
404
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405** New primitive `secure-hash' that supports many secure hash algorithms
406including md5, sha-1 and sha-2 (sha-224, sha-256, sha-384 and sha-512).
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407The elisp implementation sha1.el is removed. Feature sha1 is provided
408by default.
409
5d907d6c 410** Menu-bar changes
b22b1918 411---
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412*** `menu-bar-select-buffer-function' lets you choose another operation
413instead of `switch-to-buffer' when selecting an item in the Buffers menu.
414
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415** Window changes
416
417+++
418*** Resizing an Emacs frame now preserves proportional window sizes,
419modulo restrictions like window minimum sizes and fixed-size windows.
420
421*** The behavior of `display-buffer' is now customizable in detail.
717a1362 422+++
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423**** New option `display-buffer-base-action' specifies a list of
424user-determined display "actions" (functions and optional arguments
425for choosing the displaying window).
426
427This takes precedence over the default display action, which is
428specified by `display-buffer-fallback-action'.
429
717a1362 430+++
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431**** New option `display-buffer-alist' maps buffer name regexps to
432display actions, taking precedence over `display-buffer-base-action'.
433
434+++
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435*** New option `window-combination-limit'.
436The new option `window-combination-limit' allows to return the space
437obtained for resizing or creating a window more reliably to the window
438from which such space was obtained.
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439
440+++
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441*** New option `window-combination-resize'.
442The new option `window-combination-resize' allows to split a window that
443otherwise cannot be split because it's too small by stealing space from
444other windows in the same combination. Subsequent resizing or deletion
445of the window will resize all windows in the same combination as well.
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446
447+++
448*** New commands `maximize-window' and `minimize-window'.
53964682 449These maximize and minimize the size of a window within its frame.
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450
451+++
452*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
453These functions allow to navigate through the live buffers that have
454been shown in a specific window.
455
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456** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
457This is handy for minibuffer-only frames, and is also used for the "mouse-1
458pops up *Messages*" feature, which can now easily be changed.
459
0bfd685e 460\f
eb199145 461* Editing Changes in Emacs 24.1
b350bdf2 462
892777ba 463** Search changes
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464+++
465*** C-y in Isearch is now bound to isearch-yank-kill, instead of
466isearch-yank-line.
5abc31ef 467+++
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468*** M-y in Isearch is now bound to isearch-yank-pop, instead of
469isearch-yank-kill.
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470+++
471*** M-s C-e in Isearch is now bound to isearch-yank-line.
472
ea4f7750 473+++
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474** New commands `count-words-region' and `count-words'.
475
476*** `count-lines-region' is now an alias for `count-words-region',
477bound to M-=, which shows the number of lines, words, and characters.
ea4f7750 478
bfd779dd 479+++
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480** The default value of `backup-by-copying-when-mismatch' is now t.
481
21100e7d 482+++
ec9da840 483** The command `just-one-space' (M-SPC), if given a negative argument,
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484also deletes newlines around point.
485
b9229673 486** Deletion changes
50b063c3 487+++
b9229673 488*** New option `delete-active-region'.
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489If non-nil, [delete] and DEL delete the region if it is active and no
490prefix argument is given. If set to `kill', these commands kill
491instead.
50b063c3 492+++
59ee0542 493*** New command `delete-forward-char', bound to [delete].
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494This is meant for interactive use, and obeys `delete-active-region'.
495The command `delete-char' does not obey `delete-active-region'.
50b063c3 496---
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497*** `delete-backward-char' is now a Lisp function.
498Apart from obeying `delete-active-region', its behavior is unchanged.
499However, the byte compiler now warns if it is called from Lisp; you
500should use delete-char with a negative argument instead.
ddb54206 501---
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502*** The option `mouse-region-delete-keys' has been deleted.
503
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504** Selection changes.
505
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506The default handling of clipboard and primary selections was changed
507to conform with modern X applications. In short, most commands for
508killing and yanking text now use the clipboard, while mouse commands
509use the primary selection.
510
511In the following, we provide a list of these changes, followed by a
512list of steps to get the old behavior back if you prefer that.
513
963578d3 514+++
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515*** `select-active-regions' now defaults to t.
516Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 517the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
518the system possesses a separate primary selection facility (e.g. X).
519
963578d3 520+++
b1ab31ae
CY
521**** `select-active-regions' also accepts a new value, `only'.
522This means to only set the primary selection for temporarily active
523regions (usually made by mouse-dragging or shift-selection);
524"ordinary" active regions, such as those made with C-SPC followed by
525point motion, do not alter the primary selection.
526
963578d3
CY
527---
528**** `mouse-drag-copy-region' now defaults to nil.
529
530+++
b1ab31ae
CY
531*** mouse-2 is now bound to `mouse-yank-primary'.
532This pastes from the primary selection, ignoring the kill-ring.
533Previously, mouse-2 was bound to `mouse-yank-at-click'.
534
963578d3 535+++
b1ab31ae 536*** `x-select-enable-clipboard' now defaults to t on all platforms.
963578d3 537+++
b1ab31ae
CY
538*** `x-select-enable-primary' now defaults to nil.
539Thus, commands that kill text or copy it to the kill-ring (such as
540M-w, C-w, and C-k) also use the clipboard---not the primary selection.
541
963578d3 542---
b1ab31ae
CY
543**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
544exactly equivalent to, respectively M-w, C-w, and C-y.
545
963578d3 546---
b1ab31ae
CY
547**** Note that on MS-Windows, `x-select-enable-clipboard' was already
548non-nil by default, as Windows does not support the primary selection
549between applications.
550
963578d3 551---
b1ab31ae 552*** To return to the previous behavior, do the following:
104c2fe9 553**** Change `select-active-regions' to nil.
b1ab31ae
CY
554**** Change `mouse-drag-copy-region' to t.
555**** Change `x-select-enable-primary' to t (on X only).
556**** Change `x-select-enable-clipboard' to nil.
557**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 558
963578d3 559+++
084e6df3
JD
560*** Support for X cut buffers has been removed.
561
3fd50d5c
CY
562*** X clipboard managers are now supported.
563To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 564
50b063c3 565+++
99f053cf 566** New command `rectangle-number-lines', bound to `C-x r N', numbers
6b2c221e 567the lines in the current rectangle. With a prefix argument, this
99f053cf
JA
568prompts for a number to count from and for a format string.
569
6bf7006f 570+++
db7ab02f 571** The default value of redisplay-dont-pause is now t
6bf7006f
EZ
572This makes Emacs feel more responsive to editing commands that arrive
573at high rate, e.g. if you lean on some key, because stopping redisplay
574in the middle (when this variable is nil) forces more expensive
575updates later on, and Emacs appears to be unable to keep up.
576
e70b5064
CY
577+++
578** The behavior of <TAB> for active regions in Text mode has changed.
579In Text and related modes, typing <TAB> (`indent-for-tab-command')
580when the region is active causes Emacs to indent all the lines in the
581region, aligning them with the line previous to the first line in the
582region (or with the left margin if there is no previous line).
583
9bae34bf 584\f
eb199145 585* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 586
bfd779dd 587+++
041d709f 588** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 589
88c5c7c8 590+++
041d709f
CY
591** browse-url has a new variable `browse-url-mailto-function'
592specifies how mailto: URLs are handled. The default is `browse-url-mail'.
cbf83ce9 593
29eabb8e 594---
b7c3692a
RW
595** BibTeX mode
596
2de69e00 597*** BibTeX mode now supports biblatex.
041d709f
CY
598Use the variable bibtex-dialect to select support for different BibTeX
599dialects. bibtex-entry-field-alist is now an obsolete alias for
2de69e00
RW
600bibtex-BibTeX-entry-alist.
601
34699b85
RW
602*** New command `bibtex-search-entries' bound to C-c C-a.
603
b7c3692a
RW
604*** New `bibtex-entry-format' option `sort-fields', disabled by default.
605
022fe7ce
RW
606*** New variable `bibtex-search-entry-globally'.
607
cf16af42
GM
608** Calendar, Diary, and Appt
609
548d0a63
GM
610+++
611*** Diary entries can contain non-printing `comments'.
612See the variable `diary-comment-start'.
613
5006e634
GM
614+++
615*** Appointments can specify their individual warning times.
616See the variable `appt-warning-time-regexp'.
617
0a2bb1a9
GM
618---
619*** The function specified by `appt-disp-window-function' may be passed
620lists of arguments if multiple appointments are due at similar times.
621If you are using a custom function for this, you should update it.
622
d306b4da 623+++
7454f200
GM
624*** New function `diary-hebrew-birthday'.
625
e565dd37
GM
626---
627*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
628may no longer be nil, but must all be strings.
629
cf16af42
GM
630---
631*** The obsolete (since Emacs 22.1) method of enabling the appt package
632by adding appt-make-list to diary-hook has been removed. Use appt-activate.
633
634---
635*** Some appt variables (obsolete since Emacs 22.1) have been removed:
636appt-issue-message (use the function appt-activate)
637appt-visible/appt-msg-window (use the variable appt-display-format)
638
639---
640*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
641view-diary-entries, list-diary-entries, show-all-diary-entries
642
041d709f
CY
643** CC Mode (C, C++, etc.)
644
645*** New feature to "guess" the style in an existing buffer.
646
647** comint and modes derived from it use the generic completion code.
648
649** Compilation mode
29eabb8e 650---
041d709f
CY
651*** Compilation mode can be used without font-lock-mode.
652`compilation-parse-errors-function' is now obsolete.
653
654*** `compilation-filter-start' is let-bound to the start of the text
655inserted by the compilation filter function, when calling
656compilation-filter-hook.
657
1dce7193
SM
658*** `compilation-error-screen-columns' is obeyed in the editing buffer.
659So programming language modes can set it, whereas previously only the value
660in the *compilation* buffer was used.
661
52834b6b
CY
662** Customize
663
b0d7d8af 664+++
52834b6b
CY
665*** Customize buffers now contain a search field.
666The search is performed using `customize-apropos'.
42d9cffa 667To turn off the search field, set custom-search-field to nil.
52834b6b 668
b0d7d8af 669+++
52834b6b
CY
670*** Custom options now start out hidden if at their default values.
671Use the arrow to the left of the option name to toggle visibility.
672
673*** custom-buffer-sort-alphabetically now defaults to t.
674
b0d7d8af 675+++
52834b6b
CY
676*** The color widget now has a "Choose" button, which allows you to
677choose a color via list-colors-display.
678
041d709f
CY
679** D-Bus
680
681*** It is possible now, to access alternative buses than the default
682system or session bus.
683
684*** dbus-register-{service,method,property}
685The -method and -property functions do not automatically register
686names anymore.
687
688The new function dbus-register-service registers a service known name
689on a D-Bus without simultaneously registering a property or a method.
690
f5d6548a 691** Dired-x
c40a7de7 692---
f5d6548a
JL
693*** dired-jump and dired-jump-other-window called with a prefix argument
694read a file name from the minibuffer instead of using buffer-file-name.
695
817b48a7
GM
696+++
697*** The `dired local variables' feature provided by Dired-x is obsolete.
698The standard directory local variables feature replaces it.
8117868f 699
041d709f 700** ERC changes
7492acc9 701
041d709f
CY
702*** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
703If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
704successful NickServ identification, or after `erc-autojoin-delay'
705seconds. The default value, 'ident, means to autojoin immediately
706after connecting.
707
708*** New variable `erc-coding-system-precedence': If we use `undecided'
709as the server coding system, this variable will then be consulted.
710The default is to decode strings that can be decoded as utf-8 as
711utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 712
041d709f 713** Eshell changes
7492acc9 714
05f77e38
GM
715---
716*** The default value of `eshell-directory-name' has changed
717to be an "eshell" directory in `user-emacs-directory'.
718The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
719
720** gdb-mi
88c5c7c8 721+++
05f77e38
GM
722*** The GDB User Interface has been migrated to GDB Machine Interface.
723It now supports multithread non-stop debugging and simultaneous
724debugging of several threads.
7492acc9 725
18af70d0
CY
726** Image mode
727
05f77e38
GM
728+++
729*** RET (`image-toggle-animation') toggles animation, if applicable.
730Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 731
041d709f 732** Info
723ee192 733
041d709f
CY
734*** New command `info-display-manual' displays an Info manual
735specified by its name. If that manual is already visited in some Info
736buffer within the current session, the command will display that
737buffer. Otherwise, it will load the manual and display it. This is
738handy if you have many manuals in many Info buffers, and don't
739remember the name of the buffer visiting the manual you want to
740consult.
691cf4a0 741
88c5c7c8 742+++
24ea72d3
EZ
743*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
744This is for compatibility with the stand-alone Info reader program,
745and also because `Info-edit' is a rarely used command that is disabled
746by default.
747
748+++
06b08b88 749** MH-E has been upgraded to MH-E version 8.3.1.
041d709f 750See MH-E-NEWS for details.
37221432 751
041d709f 752** Modula-2 mode provides auto-indentation.
37221432 753
041d709f 754** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 755
041d709f
CY
756** Prolog mode has been completely revamped, with lots of additional
757functionality such as more intelligent indentation, electricity, support for
758more variants, including Mercury, and a lot more.
759
760** Rmail
761
762*** The command `rmail-epa-decrypt' decrypts OpenPGP data
763in the Rmail incoming message.
764
50419064
GM
765---
766*** The variable `rmail-message-filter' no longer has any effect.
767This change was made in Emacs 23.1 but was not advertised at the time.
768Try using `rmail-show-message-hook' instead.
769
717a1362 770** Shell mode
88c5c7c8 771+++
de0bde62 772*** Shell mode uses pcomplete rules, with the standard completion UI.
88c5c7c8 773+++
717a1362
CY
774*** The `shell' command prompts for the shell path name if the default
775directory is a remote file name and neither the environment variable
776$ESHELL nor the variable `explicit-shell-file-name' is set.
777
ddb54206 778---
041d709f
CY
779** SQL Mode enhancements.
780
781*** `sql-dialect' is an alias for `sql-product'.
782
783*** New variable `sql-port' specifies the port number for connecting
784to a MySQL or Postgres server.
785
786*** The command `sql-product-interactive' now takes a prefix argument,
787which causes it to prompt for an SQL product instead of the current
788value of `sql-product'.
789
790*** Product-specific SQL interactive commands now take prefix args.
791These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
792given a prefix argument, prompt for a name for the SQL interactive
793buffer. This reduces the need for calling `sql-rename-buffer'.
794
795*** SQL interactive modes suppress command continuation prompts, and
796replace tabs with spaces. The first change impacts multiple line SQL
797statements entered with C-j between each line, statements yanked into
798the buffer and statements sent with `sql-send-*' functions. The
799second change prevents the MySQL and Postgres interpreters from
800listing object name completions when sent text via `sql-send-*'
801functions.
802
803*** New custom variables control prompting for login parameters.
804Each supported product has a custom variable `sql-*-login-params',
805which is a list of the parameters to be prompted for before a
806connection is established.
807
808*** New variable `sql-connection-alist' for login parameter values.
809This can be used to store different username, database and server
810values. Connections defined in this variable appear in the submenu
811SQL->Start... for making new SQLi sessions.
812
813*** New command `sql-connect' starts a predefined SQLi session,
814using the login parameters from `sql-connection-alist'.
815
816*** New "Save Connection" menu item in SQLi buffers.
817This gathers the login params specified for the SQLi session, if it
818was not started by a connection, and saves them as a new connection.
819
820*** Commands for listing database objects and details.
821In an SQLi session, you can get a list of objects in the database.
822The contents of these lists are product specific.
823
824**** `C-c C-l a' or the "SQL->List all objects" menu item
825lists all the objects in the database. With a prefix argument, it
826displays additional details or extend the listing to include other
827schemas objects.
828
829**** `C-c C-l t' or the "SQL->List Table details" menu item
830prompts for the name of a database table or view and displays the list
831of columns in the relation. With a prefix argument, it displays
832additional details about each column.
833
834*** New options `sql-send-terminator' and `sql-oracle-scan-on'.
835
836*** An API for manipulating SQL product definitions has been added.
837
838** TeX modes
839
840*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 841
459bba37 842** Tramp
bfd779dd 843---
a808d31f 844*** There exists a new inline access method "ksu" (kerberized su).
bfd779dd 845---
459bba37 846*** The following access methods are discontinued: "ssh1_old",
ea843702 847"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
bfd779dd 848---
58f74fe4
MA
849*** The option `ange-ftp-binary-file-name-regexp' has changed its
850default value to "".
851
041d709f
CY
852** `url-queue-retrieve' downloads web pages asynchronously, but allow
853controlling the degree of parallelism.
177549d0 854
0c32ce32
CY
855** VC and related modes
856
2edef1a0 857+++
0c32ce32 858*** Support for pulling on distributed version control systems.
2edef1a0
CY
859`C-x v +' (`vc-pull') runs a "pull" operation, if it is supported, to
860update the current branch and working tree. A prefix argument means
861to prompt the user for specifics, e.g. a pull location.
0c32ce32 862
7d93eca9 863**** `vc-update' is now an alias for `vc-pull'.
0c32ce32 864
659114fd 865**** Currently supported by Bzr, Git, and Mercurial.
0c32ce32 866
2edef1a0 867+++
0c32ce32 868*** Support for merging on distributed version control systems.
2edef1a0
CY
869The vc-merge command now runs a "merge" operation, if it is supported,
870to merge changes from another branch into the current one. It prompts
871for specifics, e.g. a merge source.
0c32ce32 872
33f6cf7b 873**** Currently supported for Bzr, Git, and Mercurial.
0c32ce32 874
bc859d5f 875+++
2afef60a 876*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 877shows a diff while querying the user. It defaults to t.
2afef60a 878
9cff91f8 879+++
d4eb88c7
CY
880*** Log entries in some Log View buffers can be toggled to display a
881longer description by typing RET (log-view-toggle-entry-display).
882In the Log View buffers made by `C-x v L' (vc-print-root-log), you can
883use this to display the full log entry for the revision at point.
884
33f6cf7b 885**** Currently supported for Bzr, Git, and Mercurial.
d4eb88c7
CY
886
887**** Packages using Log View mode can enable this functionality by
888binding `log-view-expanded-log-entry-function' to a suitable function.
889
9cff91f8 890+++
1c6c854e
CS
891*** New command `vc-ediff' allows visual comparison of two revisions
892of a file similar to `vc-diff', but using ediff backend.
893
80c6d77f 894+++
86c60681
CY
895*** The option `vc-initial-comment' was removed in Emacs 23.2, but
896this was not advertised at the time.
897
898+++
899*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
900Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
901this was not advertised at the time.
902
041d709f 903** FIXME: xdg-open for browse-url and reportbug, 2010/08.
ca5eed61 904
041d709f
CY
905** Obsolete modes
906
907*** partial-completion-mode is obsolete.
908You can get a comparable behavior with:
909(setq completion-styles '(partial-completion initials))
910(setq completion-pcm-complete-word-inserts-delimiters t)
911
912*** pc-mode.el is obsolete.
913
914*** sregex.el is obsolete, since rx.el is a strict superset.
915
916*** s-region.el and pc-select are obsolete.
917They are superseded by shift-select-mode enabled by default in 23.1.
ca5eed61 918
0fe719e6
GM
919** Miscellaneous
920
05f77e38
GM
921+++
922*** The Landmark game is now invoked with `landmark', not `lm'.
923
924---
925*** In `ido-file-completion-map', C-v is no longer bound to ido-toggle-vc.
926(This interfered with cua-mode.)
927
9f678528
GM
928+++
929*** f90.el has some support for Fortran 2008 syntax.
930
0fe719e6
GM
931---
932*** `copyright-fix-years' can optionally convert consecutive years to ranges.
933
88c5c7c8 934+++
5b3e6db8
GM
935*** New command `nato-region' converts text to NATO phonetic alphabet.
936
eb199145
GM
937\f
938* New Modes and Packages in Emacs 24.1
d445b3f8 939
5abc31ef 940+++
60e56523 941** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 942original buffers. It is bound to "e" in Occur mode.
60e56523 943
7100ff98
SM
944** New global minor modes electric-pair-mode, electric-indent-mode,
945and electric-layout-mode.
3b843809 946
a83ec3c9
CY
947** tabulated-list.el provides a generic major mode for tabulated data,
948from which other modes can be derived.
949
d02c9bcd
SM
950** pcase.el provides the ML-style pattern matching macro `pcase'.
951
7725ebb7
MA
952** secrets.el is an implementation of the Secret Service API, an
953interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
954Secret Service API requires D-Bus for communication. The command
955`secrets-show-secrets' offers a buffer with a visualization of the
956secrets.
7725ebb7 957
f9e78150
MA
958** notifications.el provides an implementation of the Desktop
959Notifications API. It requires D-Bus for communication.
960
12fe5bcc
MA
961** soap-client.el supports access to SOAP web services from Emacs.
962soap-inspect.el is an interactive inspector for SOAP WSDL structures.
963
ad7d6ecb
GM
964** xmodmap-generic-mode for xmodmap files.
965
53bbe3ad
JB
966** New emacs-lock.el package.
967(The pre-existing one has been renamed to old-emacs-lock.el and moved
968to obsolete/.) Now, Emacs Lock is a proper minor mode
969`emacs-lock-mode'. Protection against exiting Emacs and killing the
970buffer can be set separately. The mechanism for auto turning off
971protection for buffers with inferior processes has been generalized.
972
eb199145
GM
973\f
974* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 975
fa6996bc
EZ
976---
977** `char-direction-table' and the associated function `char-direction'
978were deleted. They were buggy and inferior to the new support of
979bidirectional editing introduced in Emacs 24. If you need the
980bidirectional properties of a character, use `get-char-code-property'
981with the last argument `bidi-class'.
982
a6326082 983+++
470d996d
TV
984** `copy-directory' now copies the source directory as a subdirectory
985of the target directory, if the latter is an existing directory. The
986new optional arg COPY-CONTENTS, if non-nil, makes the function copy
987the contents directly into a pre-existing target directory.
988
25ca2e61
CY
989** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
990passes it to the mail user agent function. This argument specifies an
991action for returning to the caller after finishing with the mail.
992This is currently used by Rmail to delete a mail window.
993
9173a8fb
CY
994** For mouse click input events in the text area, the Y pixel
995coordinate in the POSITION list now counts from the top of the text
996area, excluding any header line. Previously, it counted from the top
997of the header line.
998
2b18055e
GM
999---
1000** Support for "old-style" backquotes, which have been obsolete for
1001more than 10 years, has been further reduced. Now a backquote not
1002followed by a space is always treated as a "new-style" backquote.
1003Please consider completely removing all "old-style" backquotes from
1004your code as a matter of some urgency. If your code uses backquotes
1005as documented in the Elisp manual, and compiles without warning, then
1006you have nothing to do in this regard. Code not following the
1007appropriate conventions may fail to compile. The most common cause of
1008trouble seems to be an old-style backquote followed by a newline.
288cf4e9 1009
c31b4ce3 1010---
aab25355
GM
1011** view-buffer now treats special mode-class in the same way that
1012view-file has since Emacs 22 (ie, it won't enable View mode if the
1013major-mode is special).
fd5c9dfa 1014
3b7e1d5f 1015** Passing a nil argument to a minor mode function now turns the mode
0a19a6f8 1016ON unconditionally.
6431f2e6 1017
ddb54206 1018+++
6431f2e6 1019** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
1020and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
1021With these alist entries omitted, `make-frame' checks the value of the
1022variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
1023a menu-bar or tool-bar, respectively. If the alist entries are added,
1024they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 1025
50b063c3 1026+++
fe0aa820
CY
1027** Regions created by mouse dragging are now normal active regions,
1028similar to the ones created by shift-selection. In previous Emacs
1029versions, these regions were delineated by `mouse-drag-overlay', which
1030has now been removed.
d6d8ee7a 1031
34c99998
GM
1032+++
1033** The fourth argument of filter-buffer-substring, which says to remove
1034text properties from the final result, has been removed.
1035Eg simply pass the result through substring-no-properties if you need this.
1036
334023be 1037---
4583e796
GM
1038** cl.el no longer provides `cl-19'.
1039
be890cb8
SM
1040** The menu bar bindings's caches are not used any more.
1041Use (where-is-internal <def> nil t) instead.
1042
3a970881
GM
1043+++
1044** The following obsolete (mostly since at least 21.1) functions and aliases
1045have been removed (the appropriate new function is given in parentheses):
1046comint-kill-output (comint-delete-output),
1047decompose-composite-char (char-to-string),
1048outline-visible (outline-invisible-p),
1049internal-find-face (facep), internal-get-face (facep and check-face),
1050frame-update-faces (not needed),
1051frame-update-face-colors (frame-set-background-mode),
1052x-frob-font-weight and x-frob-font-slant (appropriate make-face-* function),
1053x-make-font-bold and x-make-font-demibold (make-face-bold),
1054x-make-font-italic and x-make-font-oblique (make-face-italic),
1055x-make-font-bold-italic (make-face-bold-italic),
1056x-make-font-unbold (make-face-unbold),
1057x-make-font-unitalic (make-face-unitalic),
1058mldrag-drag-mode-line (mouse-drag-mode-line),
1059mldrag-drag-vertical-line (mouse-drag-vertical-line),
1060iswitchb-default-keybindings (iswitchb-mode), char-bytes (== 1),
1061isearch-return-char (isearch-printing-char), make-local-hook (not needed)
1062
1063+++
1064** The following obsolete (mostly since at least 21.1) variables and varaliases
1065have been removed (the appropriate new variable is given in parentheses):
1066checkdoc-minor-keymap (checkdoc-minor-mode-map),
1067vc-header-alist (vc-BACKEND-header), directory-sep-char (== ?/)
1068font-lock-defaults-alist (font-lock-defaults), and e (float-e).
3226d6ca 1069
334023be 1070---
041d709f 1071** The following obsolete files were removed:
7b0e3048
GM
1072sc.el, x-menu.el, rnews.el, rnewspost.el
1073
33658d4e
CY
1074** FIXME finder-inf.el changes.
1075
eb199145
GM
1076\f
1077* Lisp changes in Emacs 24.1
9097e8af 1078
735cc5ca 1079+++
041d709f
CY
1080** Code can now use lexical scoping by default instead of dynamic scoping.
1081The `lexical-binding' variable lets code use lexical scoping for local
48da7392
GM
1082variables. It is typically set via a file-local variable in the first
1083line of the file, in which case it applies to all the code in that file.
735cc5ca 1084+++
041d709f
CY
1085*** `eval' takes a new optional argument `lexical' to choose the new lexical
1086binding instead of the old dynamic binding mode.
735cc5ca 1087+++
041d709f
CY
1088*** Lexically scoped interpreted functions are represented with a new form
1089of function value which looks like (closure ENV ARGS &rest BODY).
1090
1091*** New macro `letrec' to define recursive local functions.
735cc5ca 1092+++
041d709f
CY
1093*** New function `special-variable-p' to check whether a variable is
1094declared as dynamically bound.
1095
d273439c 1096+++
041d709f
CY
1097** An Emacs Lisp testing tool is now included.
1098Emacs Lisp developers can use this tool to write automated tests for
1099their code. See the ERT info manual for details.
1100
1101** Changes for bidirectional display and editing
f1816485 1102
041d709f
CY
1103+++
1104*** New function `current-bidi-paragraph-direction'.
f1816485
EZ
1105This returns the actual value of base direction of the paragraph at
1106point.
041d709f
CY
1107
1108+++
1109*** New function `bidi-string-mark-left-to-right'.
f1816485
EZ
1110Given a string containing characters from right-to-left (RTL) scripts,
1111this function returns another string which can be safely inserted into
1112a buffer, such that any following text will be always displayed to the
1113right of that string. (This works by appending the Unicode
1114"LEFT-TO-RIGHT MARK" character when the argument string might need that.)
041d709f
CY
1115
1116This is useful when the buffer has overall left-to-right (LTR)
1117paragraph direction and you need to insert a string whose contents and
f1816485
EZ
1118directionality are not known in advance, without disrupting the layout
1119of the line.
041d709f 1120
bee0fcef 1121** Window changes
c4682d18
MR
1122+++
1123*** Window tree functions are accessible in Elisp.
1124Functions are provided to return the parent, siblings or child windows
1125of any window including internal windows (windows not associated with a
1126buffer) in the window tree.
291d142b 1127+++
24300f5f
CY
1128**** New function `window-valid-p' gives non-nil for live and internal
1129windows.
c4682d18 1130+++
24300f5f 1131**** Window manipulation can deal with internal windows.
c4682d18
MR
1132Many window handling functions like `split-window', `delete-window', or
1133`delete-other-windows' as well as the window resizing functions can now
1134act on any window including internal ones.
c4682d18
MR
1135+++
1136*** window-total-height/-width vs window-body-height/-width.
1137The function `window-height' has been renamed to `window-total-height'
1138and `window-width' has been renamed to `window-body-width'. The old
1139names are provided as aliases. Two new functions `window-total-width'
1140and `window-body-height' are provided.
c4682d18
MR
1141+++
1142*** Window parameters specific to window handling functions.
1143For each window you can specify a parameter to override the default
1144behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
1145and `delete-other-windows'. The variable `ignore-window-parameters'
1146allows to ignore processing such parameters.
c4682d18
MR
1147+++
1148*** New semantics of third argument of `split-window'.
c4682d18
MR
1149The third argument of `split-window' has been renamed to SIDE and can be
1150set to any of the values 'below, 'right, 'above, or 'left to make the
1151new window appear on the corresponding side of the window that shall be
1152split. Any other value of SIDE will cause `split-window' to split the
1153window into two side-by-side windows as before.
c4682d18
MR
1154+++
1155*** Window resizing functions.
487ffd7a 1156A new standard function for resizing windows called `window-resize' has
c4682d18
MR
1157been introduced. This and all other functions for resizing windows no
1158longer delete any windows when they become too small.
b3c0dbfd
MR
1159+++
1160*** Deleting the selected window now selects the most recently selected
1161live window on that frame instead.
c4682d18
MR
1162+++
1163*** `adjust-window-trailing-edge' adjustments.
1164`adjust-window-trailing-edge' can now deal with fixed-size windows and
1165is able to resize other windows if a window adjacent to the trailing
1166edge cannot be shrunk any more. This makes its behavior more similar to
1167that of Emacs 21 without compromising, however, its inability to delete
1168windows which was introduced in Emacs 22.
c4682d18
MR
1169+++
1170*** Window-local buffer lists.
1171Windows now have local buffer lists. This means that removing a buffer
1172from display in a window will preferably show the buffer previously
1173shown in that window with its previous window-start and window-point
1174positions. This also means that the same buffer may be automatically
1175shown twice even if it already appears in another window.
0e406a72 1176+++
bee0fcef
CY
1177*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
1178which if non-nil requires the buffer to be displayed in the currently
1179selected window, signaling an error otherwise. If nil, another window
1180can be used, e.g. if the selected one is strongly dedicated.
24300f5f 1181+++
0a2132ba 1182*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
1183to `split-window-below' and `split-window-right' respectively.
1184The old names are kept as aliases.
24300f5f 1185+++
0a2132ba
CY
1186*** Display actions
1187
1188**** The second arg to `display-buffer' and `pop-to-buffer' is now
1189named ACTION, and takes a display action of the same form as
1190`display-buffer-base-action' (see Changes, above). A non-nil,
1191non-list value is treated specially, as the old meaning.
1192
1193**** New variable `display-buffer-overriding-action'.
1194
1195**** The procedure of `display-buffer' etc. to choose a window is
1196determined by combining `display-buffer-overriding-action',
1197`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
1198and `display-buffer-fallback-action'. The second and fourth of these
1199are user-customizable variables.
1200
1201See the docstring of `display-buffer' for details.
bee0fcef 1202
ed6235ea
MR
1203+++
1204*** New behavior of `quit-window'.
1205The behavior of `quit-window' has been changed in order to restore the
1206state before the last buffer display operation in that window.
1207
d83dc65b
MR
1208+++
1209*** The new option `frame-auto-hide-function' lets you choose between
53964682 1210iconifying or deleting a frame when burying a buffer shown in a dedicated
d83dc65b
MR
1211frame or quitting a window showing a buffer in a frame of its own.
1212
20d2304d
CY
1213+++
1214*** New functions `window-state-get' and `window-state-put'.
1215These functions allow to save and restore the state of an arbitrary
1216frame or window as an Elisp object.
1217
a2a25d24 1218** Completion
041d709f 1219
a2a25d24
SM
1220*** New variable completion-extra-properties used to specify extra properties
1221of the current completion:
1222- :annotate-function, same as the old completion-annotate-function.
1223- :exit-function, function to call after completion took place.
1224
1225*** Functions on completion-at-point-functions can return any of the properties
1226valid for completion-extra-properties.
1227
1228*** completion-annotate-function is obsolete.
1229
620c53a6
SM
1230*** New `metadata' method for completion tables. The metadata thus returned
1231can specify various details of the data returned by `all-completions':
1232- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
1233 used to select a style in completion-category-overrides.
1234- `annotation-function' to add annotations in *Completions*.
1235- `display-sort-function' to specify how to sort entries in *Completions*.
1236- `cycle-sort-function' to specify how to sort entries when cycling.
1237
de09aa52
CY
1238*** minibuffer-local-filename-must-match-map is not used any more.
1239Instead, the bindings in minibuffer-local-filename-completion-map are
1240combined with minibuffer-local-must-match-map.
1241
1242*** New variable `completing-read-function' allows overriding the
1243behavior of `completing-read'.
1244
d366bd53 1245+++
f042970d 1246** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
1247text terminal display, via a char-table entry that is a cons cell.
1248
da91b5f2
CY
1249** `open-network-stream' can now be used to open an encrypted stream.
1250It now accepts an optional `:type' parameter for initiating a TLS
1251connection, directly or via STARTTLS. To do STARTTLS, additional
1252parameters (`:end-of-command', `:success', `:capabilities-command')
1253must also be supplied.
1254
ddb54206 1255+++
f6d62986
SM
1256** pre/post-command-hook are not reset to nil upon error.
1257Instead, the offending function is removed.
1258
b1f6fa26
CY
1259** New hook types
1260
e7bc51d0 1261+++
b1f6fa26
CY
1262*** New function `run-hook-wrapped' for running an abnormal hook by
1263passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 1264Like `run-hook-with-args-until-success', it stops at the first
5385447f 1265non-nil return value.
e7bc51d0 1266
b1f6fa26
CY
1267+++
1268*** New macro `with-wrapper-hook' for running an abnormal hook as a
1269set of "wrapping" filters, similar to around advice.
54521c99
GM
1270(A version of this macro was actually added in Emacs 23.2 but was not
1271advertised at the time.)
f6d62986 1272
866c1d22
GM
1273+++
1274** The macros `condition-case-no-debug' and `with-demoted-errors' were
1275added in Emacs 23.1, but not advertised.
d6b1d521 1276
953cebf5
GM
1277+++
1278** The new function `server-eval-at' allows evaluation of Lisp forms on
1279named Emacs server instances, using TCP sockets.
7deebf1b 1280
1b9f60cc
GM
1281+++
1282** `call-process' and `call-process-region' allow a `(:file "file")' spec
1283to redirect STDOUT to a file.
7deebf1b 1284
04e2ce72
CY
1285---
1286** Variable `stack-trace-on-error' removed.
e7f7fbaa
SM
1287Also the debugger can now "continue" from an error, which means it will jump
1288to the error handler as if the debugger had not been invoked instead of
1289jumping all the way to the top-level.
1290
da97a9e6
CY
1291+++
1292** The function format-time-string now supports the %N directive, for
1293higher-resolution time stamps.
1294
7e2734bc 1295+++
3ef01959
CY
1296** New function `read-char-choice' reads a restricted set of characters,
1297discarding any inputs not inside the set.
1298
4dee2dea 1299+++
2e288d54
JB
1300** `image-library-alist' is renamed to `dynamic-library-alist'.
1301The variable is now used to load all kind of supported dynamic libraries,
1302not just image libraries. The previous name is still available as an
1303obsolete alias.
1304
04e2ce72
CY
1305** New variable `syntax-propertize-function'.
1306This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
1307This allows syntax-table properties to be set independently from font-lock:
1308just call syntax-propertize to make sure the text is propertized.
1309Together with this new variable come a new hook
1310syntax-propertize-extend-region-functions, as well as two helper functions:
1311syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
1312as-is; and syntax-propertize-rules which provides a new way to specify
1313syntactic rules.
1314
f58b9822 1315+++
a2e5caf7
SM
1316** New hook post-self-insert-hook run at the end of self-insert-command.
1317
7cf78aac 1318+++
c5683ceb 1319** Syntax tables support a new "comment style c" additionally to style b.
041d709f 1320
4dee2dea 1321---
4e2db1fe 1322** frame-local variables cannot be let-bound any more.
041d709f 1323
15de15c6 1324** Major and minor mode changes
3fd50d5c 1325+++
15de15c6
CY
1326*** `prog-mode' is a new major mode from which programming modes
1327should be derived.
041d709f 1328
c2f03a4a 1329+++
15de15c6
CY
1330**** `prog-mode-hook' can be used to enable features for programming
1331modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
1332on-the-fly spell checking for comments and strings.
1333
12f381b7 1334+++
15de15c6
CY
1335*** New hook `change-major-mode-after-body-hook', run by
1336`run-mode-hooks' just before any other mode hooks.
1337
c7301fe4 1338+++
7a9a2fc6
GM
1339*** Enabled globalized minor modes can be disabled in specific major modes.
1340If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
1341major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
15de15c6 1342
56afad3a 1343+++
15de15c6 1344*** `define-minor-mode' accepts a new keyword :variable.
f44379e7 1345
04e2ce72 1346+++
b2957ea8 1347** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
1348Trashing is performed if TRASH and `delete-by-moving-to-trash' are
1349both non-nil. Interactively, TRASH defaults to t, unless a prefix
1350argument is supplied (see Trash changes, above).
53967e09 1351
94bc7984 1352---
9317e499 1353** `facemenu-read-color' is now an alias for `read-color'.
94bc7984
GM
1354
1355+++
1356** The command `read-color' now requires a match for a color name
1357or RGB triplet, instead of signaling an error if the user provides
1358invalid input.
9317e499 1359
f7c9199f 1360+++
4039c786
CY
1361** Tool-bars can display separators.
1362Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 1363i.e. via menu entries of the form `(menu-item "--")'.
9317e499 1364
00fe2df1
JL
1365** Image API
1366
eea14f31 1367+++
18af70d0
CY
1368*** Animated images support (currently animated gifs only).
1369
eea14f31 1370+++
18af70d0
CY
1371**** `image-animated-p' returns non-nil if an image can be animated.
1372
eea14f31 1373+++
18af70d0
CY
1374**** `image-animate' animates a supplied image spec.
1375
eea14f31 1376+++
18af70d0
CY
1377**** `image-animate-timer' returns the timer object for an image that
1378is being animated.
00fe2df1 1379
7cb76fe0
GM
1380---
1381*** `image-extension-data' has been renamed to `image-metadata'.
1382The old name is an obsolete alias to the new one.
1546c559 1383
bba26374 1384+++
31fd3586 1385*** Emacs can be compiled with ImageMagick support.
c1f10868 1386This feature is not available for the Nextstep or MS ports.
31fd3586
GM
1387Then the function `imagemagick-types' returns a list of image file
1388extensions that your installation of ImageMagick supports. The
041d709f
CY
1389function `imagemagick-register-types' enables ImageMagick support for
1390these image types, minus those listed in `imagemagick-types-inhibit'.
bba26374 1391Visiting one of these file types will then use Image mode.
041d709f 1392
71c17aec 1393** XML and HTML parsing
043efd56
GM
1394If Emacs is compiled with libxml2 support, there are two new functions:
1395`libxml-parse-html-region' (which parses "real world" HTML) and
1396`libxml-parse-xml-region' (which parses XML). Both return an Emacs
1397Lisp parse tree.
4b9832a6
CY
1398
1399FIXME: These should be front-ended by xml.el.
1400
e2574f2c
TZ
1401** GnuTLS
1402
31fd3586 1403*** New library `gnutls.el'.
573559b4 1404This requires Emacs to have been built with GnuTLS support.
31fd3586
GM
1405The main functions are `open-gnutls-stream' and `gnutls-negotiate'.
1406It's easiest to use these functions through `open-network-stream'
1407because it can upgrade connections through STARTTLS opportunistically
1408or use plain SSL, depending on your needs. For debugging, set
1409`gnutls-log-level' greater than 0.
71c17aec 1410
a6020335
MH
1411** Isearch
1412
7cb76fe0 1413---
a6020335
MH
1414*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
1415
ddb54206 1416+++
9326ba26
CY
1417** Progress reporters can now "spin".
1418The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
1419now be nil, or omitted. This makes a "non-numeric" reporter. Each
1420time you call `progress-reporter-update' on that progress reporter,
1421with a nil or omitted VALUE argument, the reporter message is
1422displayed with a "spinning bar".
1423
8f05da42 1424+++
3e214b50
JB
1425** New variable `revert-buffer-in-progress-p' is true while a buffer is
1426being reverted, even if the buffer has a local `revert-buffer-function'.
1427
638f053a
JB
1428** New variables `delayed-warnings-list' and `delayed-warnings-hook' allow
1429deferring warnings until the main command loop is executed.
1430
e145f188
GM
1431+++
1432** `set-auto-mode' now respects mode: local variables at the end of files,
1433as well as those in the -*- line.
1434
6420d28b
CY
1435---
1436** rx.el has a new `group-n' construct for explicitly numbered groups.
1437
dac86404
GM
1438+++
1439** New function `make-composed-keymap' that constructs a new keymap
1440from multiple input maps. You can use this to make a keymap that
1441inherits from multiple maps, eg:
1442 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 1443
7aa5aad8
GM
1444+++
1445** Set `debug-on-event' to make Emacs enter the debugger e.g. on receipt
1446of SIGUSR1. This can be useful when `inhibit-quit' is set.
12ca40ec 1447
ddb54206 1448+++
27f7ef2f 1449** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
1450This means that the empty symbol can now be read back. Also, #: by itself
1451(when not immediately followed by a possible symbol character) stands for
1452an empty uninterned symbol.
041d709f 1453
fead402d
CY
1454+++
1455** New math functions `isnan', `copysign', `frexp', `ldexp'.
1456
041d709f
CY
1457** Obsolete functions and variables
1458
05f77e38
GM
1459---
1460*** `tooltip-use-echo-area' is obsolete.
1461Rather than setting this to t, disable Tooltip mode instead.
1462
34c99998 1463+++
041d709f
CY
1464*** buffer-substring-filters is obsolete.
1465Use `filter-buffer-substring-functions' instead.
1466
7cb76fe0 1467---
041d709f
CY
1468*** `byte-compile-disable-print-circle' is obsolete.
1469
f160676e 1470---
041d709f 1471*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
1472Use `post-command-hook' instead.
1473
d366bd53 1474+++
67e729a5
CY
1475*** `font-lock-maximum-size' is obsolete.
1476
eb199145
GM
1477\f
1478* Changes in Emacs 24.1 on non-free operating systems
d53a60a6 1479
a2f0118c 1480---
7a22e700 1481** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
1482and also when HOME is set to C:\ by default.
1483
7a22e700 1484** New configure.bat options
04779484 1485
a0d363f4 1486+++
7a22e700 1487*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 1488
a0d363f4 1489+++
7a22e700 1490*** --distfiles specifies files to be included in binary distribution.
e2574f2c 1491
a0d363f4 1492+++
7a22e700
OK
1493*** --without-gnutls disables automatic GnuTLS detection.
1494
a0d363f4
GM
1495+++
1496*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 1497
a0d363f4 1498+++
0a19a6f8 1499** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 1500
1f5e1a16
GM
1501---
1502** The Lisp function `w32-default-color-map' is now obsolete.
1503(It is only used internally in the Emacs C code.)
5430d399 1504
1f5e1a16
GM
1505+++
1506** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
1507reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 1508
05197f40 1509\f
a933dad1 1510----------------------------------------------------------------------
5b87ad55 1511This file is part of GNU Emacs.
a933dad1 1512
ab73e885 1513GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 1514it under the terms of the GNU General Public License as published by
ab73e885
GM
1515the Free Software Foundation, either version 3 of the License, or
1516(at your option) any later version.
5b87ad55
GM
1517
1518GNU Emacs is distributed in the hope that it will be useful,
1519but WITHOUT ANY WARRANTY; without even the implied warranty of
1520MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1521GNU General Public License for more details.
a933dad1 1522
5b87ad55 1523You should have received a copy of the GNU General Public License
ab73e885 1524along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 1525
05197f40 1526\f
a933dad1
DL
1527Local variables:
1528mode: outline
1529paragraph-separate: "[ \f]*$"
1530end: