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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
29eabb8e 590---
b7c3692a
RW
591** BibTeX mode
592
2de69e00 593*** BibTeX mode now supports biblatex.
041d709f
CY
594Use the variable bibtex-dialect to select support for different BibTeX
595dialects. bibtex-entry-field-alist is now an obsolete alias for
2de69e00
RW
596bibtex-BibTeX-entry-alist.
597
34699b85
RW
598*** New command `bibtex-search-entries' bound to C-c C-a.
599
b7c3692a
RW
600*** New `bibtex-entry-format' option `sort-fields', disabled by default.
601
022fe7ce
RW
602*** New variable `bibtex-search-entry-globally'.
603
cf16af42
GM
604** Calendar, Diary, and Appt
605
548d0a63
GM
606+++
607*** Diary entries can contain non-printing `comments'.
608See the variable `diary-comment-start'.
609
5006e634
GM
610+++
611*** Appointments can specify their individual warning times.
612See the variable `appt-warning-time-regexp'.
613
0a2bb1a9
GM
614---
615*** The function specified by `appt-disp-window-function' may be passed
616lists of arguments if multiple appointments are due at similar times.
617If you are using a custom function for this, you should update it.
618
d306b4da 619+++
7454f200
GM
620*** New function `diary-hebrew-birthday'.
621
e565dd37
GM
622---
623*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
624may no longer be nil, but must all be strings.
625
cf16af42
GM
626---
627*** The obsolete (since Emacs 22.1) method of enabling the appt package
628by adding appt-make-list to diary-hook has been removed. Use appt-activate.
629
630---
631*** Some appt variables (obsolete since Emacs 22.1) have been removed:
632appt-issue-message (use the function appt-activate)
633appt-visible/appt-msg-window (use the variable appt-display-format)
634
635---
636*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
637view-diary-entries, list-diary-entries, show-all-diary-entries
638
523eedb0
GM
639** Browse-url
640
641+++
642*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
643
644---
645*** The default browser used by the package is now the "xdg-open" program,
646on platforms that support it. This calls your desktop's preferred browser.
647
041d709f
CY
648** CC Mode (C, C++, etc.)
649
650*** New feature to "guess" the style in an existing buffer.
651
652** comint and modes derived from it use the generic completion code.
653
654** Compilation mode
29eabb8e 655---
041d709f
CY
656*** Compilation mode can be used without font-lock-mode.
657`compilation-parse-errors-function' is now obsolete.
658
659*** `compilation-filter-start' is let-bound to the start of the text
660inserted by the compilation filter function, when calling
661compilation-filter-hook.
662
47a6a35f
GM
663*** `compilation-error-screen-columns' and `compilation-first-column'
664are obeyed in the editing buffer. So programming language modes can
665set them, whereas previously only the value in the *compilation* buffer
666was used.
1dce7193 667
52834b6b
CY
668** Customize
669
b0d7d8af 670+++
52834b6b
CY
671*** Customize buffers now contain a search field.
672The search is performed using `customize-apropos'.
42d9cffa 673To turn off the search field, set custom-search-field to nil.
52834b6b 674
b0d7d8af 675+++
52834b6b
CY
676*** Custom options now start out hidden if at their default values.
677Use the arrow to the left of the option name to toggle visibility.
678
ff1796f3 679---
52834b6b
CY
680*** custom-buffer-sort-alphabetically now defaults to t.
681
b0d7d8af 682+++
52834b6b
CY
683*** The color widget now has a "Choose" button, which allows you to
684choose a color via list-colors-display.
685
041d709f
CY
686** D-Bus
687
688*** It is possible now, to access alternative buses than the default
689system or session bus.
690
691*** dbus-register-{service,method,property}
692The -method and -property functions do not automatically register
693names anymore.
694
695The new function dbus-register-service registers a service known name
696on a D-Bus without simultaneously registering a property or a method.
697
f5d6548a 698** Dired-x
c40a7de7 699---
f5d6548a
JL
700*** dired-jump and dired-jump-other-window called with a prefix argument
701read a file name from the minibuffer instead of using buffer-file-name.
702
817b48a7
GM
703+++
704*** The `dired local variables' feature provided by Dired-x is obsolete.
705The standard directory local variables feature replaces it.
8117868f 706
041d709f 707** ERC changes
7492acc9 708
c4077254
GM
709---
710*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
711controlling attempts to autojoin a channel.
041d709f
CY
712
713*** New variable `erc-coding-system-precedence': If we use `undecided'
714as the server coding system, this variable will then be consulted.
715The default is to decode strings that can be decoded as utf-8 as
716utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 717
041d709f 718** Eshell changes
7492acc9 719
05f77e38
GM
720---
721*** The default value of `eshell-directory-name' has changed
722to be an "eshell" directory in `user-emacs-directory'.
723The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
724
725** gdb-mi
88c5c7c8 726+++
05f77e38
GM
727*** The GDB User Interface has been migrated to GDB Machine Interface.
728It now supports multithread non-stop debugging and simultaneous
729debugging of several threads.
7492acc9 730
18af70d0
CY
731** Image mode
732
05f77e38
GM
733+++
734*** RET (`image-toggle-animation') toggles animation, if applicable.
735Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 736
041d709f 737** Info
723ee192 738
041d709f
CY
739*** New command `info-display-manual' displays an Info manual
740specified by its name. If that manual is already visited in some Info
741buffer within the current session, the command will display that
742buffer. Otherwise, it will load the manual and display it. This is
743handy if you have many manuals in many Info buffers, and don't
744remember the name of the buffer visiting the manual you want to
745consult.
691cf4a0 746
88c5c7c8 747+++
24ea72d3
EZ
748*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
749This is for compatibility with the stand-alone Info reader program,
750and also because `Info-edit' is a rarely used command that is disabled
751by default.
752
753+++
06b08b88 754** MH-E has been upgraded to MH-E version 8.3.1.
041d709f 755See MH-E-NEWS for details.
37221432 756
ff1796f3 757---
041d709f 758** Modula-2 mode provides auto-indentation.
37221432 759
ff1796f3 760---
041d709f 761** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 762
ff1796f3 763---
041d709f
CY
764** Prolog mode has been completely revamped, with lots of additional
765functionality such as more intelligent indentation, electricity, support for
766more variants, including Mercury, and a lot more.
767
768** Rmail
769
a7686350 770+++
041d709f
CY
771*** The command `rmail-epa-decrypt' decrypts OpenPGP data
772in the Rmail incoming message.
773
50419064
GM
774---
775*** The variable `rmail-message-filter' no longer has any effect.
776This change was made in Emacs 23.1 but was not advertised at the time.
777Try using `rmail-show-message-hook' instead.
778
717a1362 779** Shell mode
88c5c7c8 780+++
de0bde62 781*** Shell mode uses pcomplete rules, with the standard completion UI.
88c5c7c8 782+++
717a1362
CY
783*** The `shell' command prompts for the shell path name if the default
784directory is a remote file name and neither the environment variable
785$ESHELL nor the variable `explicit-shell-file-name' is set.
786
ddb54206 787---
34e8a2da 788** SQL mode
041d709f 789
34e8a2da
GM
790---
791*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
792and `sql-oracle-scan-on'.
041d709f 793
34e8a2da
GM
794---
795*** New custom variables control prompting for login parameters.
796Each supported product has a custom variable `sql-*-login-params',
797which is a list of the parameters to be prompted for before a
798connection is established.
041d709f 799
34e8a2da 800---
041d709f 801*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 802which causes it to prompt for an SQL product.
041d709f 803
34e8a2da
GM
804---
805*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
806These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
807given a prefix argument, prompt for a name for the SQL interactive
808buffer. This reduces the need for calling `sql-rename-buffer'.
809
34e8a2da 810---
041d709f
CY
811*** SQL interactive modes suppress command continuation prompts, and
812replace tabs with spaces. The first change impacts multiple line SQL
813statements entered with C-j between each line, statements yanked into
814the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
815second prevents the MySQL and Postgres interpreters from listing
816object name completions when sent text via `sql-send-*' functions.
041d709f 817
34e8a2da 818---
041d709f
CY
819*** New command `sql-connect' starts a predefined SQLi session,
820using the login parameters from `sql-connection-alist'.
821
34e8a2da 822---
041d709f
CY
823*** New "Save Connection" menu item in SQLi buffers.
824This gathers the login params specified for the SQLi session, if it
825was not started by a connection, and saves them as a new connection.
826
34e8a2da
GM
827---
828*** New commands for listing database objects and details:
829sql-list-all and sql-list-table.
041d709f 830
34e8a2da 831---
041d709f
CY
832*** An API for manipulating SQL product definitions has been added.
833
834** TeX modes
835
e74e58c9 836+++
041d709f 837*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 838
459bba37 839** Tramp
bfd779dd 840---
a808d31f 841*** There exists a new inline access method "ksu" (kerberized su).
bfd779dd 842---
459bba37 843*** The following access methods are discontinued: "ssh1_old",
ea843702 844"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
bfd779dd 845---
58f74fe4
MA
846*** The option `ange-ftp-binary-file-name-regexp' has changed its
847default value to "".
848
041d709f
CY
849** `url-queue-retrieve' downloads web pages asynchronously, but allow
850controlling the degree of parallelism.
177549d0 851
0c32ce32
CY
852** VC and related modes
853
2edef1a0 854+++
0c32ce32 855*** Support for pulling on distributed version control systems.
2edef1a0
CY
856`C-x v +' (`vc-pull') runs a "pull" operation, if it is supported, to
857update the current branch and working tree. A prefix argument means
858to prompt the user for specifics, e.g. a pull location.
0c32ce32 859
7d93eca9 860**** `vc-update' is now an alias for `vc-pull'.
0c32ce32 861
659114fd 862**** Currently supported by Bzr, Git, and Mercurial.
0c32ce32 863
2edef1a0 864+++
0c32ce32 865*** Support for merging on distributed version control systems.
2edef1a0
CY
866The vc-merge command now runs a "merge" operation, if it is supported,
867to merge changes from another branch into the current one. It prompts
868for specifics, e.g. a merge source.
0c32ce32 869
33f6cf7b 870**** Currently supported for Bzr, Git, and Mercurial.
0c32ce32 871
bc859d5f 872+++
2afef60a 873*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 874shows a diff while querying the user. It defaults to t.
2afef60a 875
9cff91f8 876+++
d4eb88c7
CY
877*** Log entries in some Log View buffers can be toggled to display a
878longer description by typing RET (log-view-toggle-entry-display).
879In the Log View buffers made by `C-x v L' (vc-print-root-log), you can
880use this to display the full log entry for the revision at point.
881
33f6cf7b 882**** Currently supported for Bzr, Git, and Mercurial.
d4eb88c7
CY
883
884**** Packages using Log View mode can enable this functionality by
885binding `log-view-expanded-log-entry-function' to a suitable function.
886
9cff91f8 887+++
1c6c854e
CS
888*** New command `vc-ediff' allows visual comparison of two revisions
889of a file similar to `vc-diff', but using ediff backend.
890
80c6d77f 891+++
86c60681
CY
892*** The option `vc-initial-comment' was removed in Emacs 23.2, but
893this was not advertised at the time.
894
895+++
896*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
897Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
898this was not advertised at the time.
899
041d709f
CY
900** Obsolete modes
901
23d70505
GM
902---
903*** abbrevlist.el
904
f8ca9162
GM
905---
906*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
907
908*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
909You can get a comparable behavior with:
910(setq completion-styles '(partial-completion initials))
911(setq completion-pcm-complete-word-inserts-delimiters t)
912
23d70505
GM
913---
914*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
915
916*** pgg is obsolete (use EasyPG instead)
041d709f 917
23d70505 918---
041d709f
CY
919*** sregex.el is obsolete, since rx.el is a strict superset.
920
23d70505
GM
921---
922*** s-region.el and pc-select.el are obsolete.
923They are superseded by shift-select-mode, enabled by default since 23.1.
924
925+++
926*** vc-mcvs.el is obsolete (for lack of a maintainer)
ca5eed61 927
0fe719e6
GM
928** Miscellaneous
929
523eedb0
GM
930*** FIXME: xdg-open for reportbug, 2010/08.
931
05f77e38
GM
932+++
933*** The Landmark game is now invoked with `landmark', not `lm'.
934
935---
936*** In `ido-file-completion-map', C-v is no longer bound to ido-toggle-vc.
937(This interfered with cua-mode.)
938
9f678528
GM
939+++
940*** f90.el has some support for Fortran 2008 syntax.
941
0fe719e6
GM
942---
943*** `copyright-fix-years' can optionally convert consecutive years to ranges.
944
88c5c7c8 945+++
5b3e6db8
GM
946*** New command `nato-region' converts text to NATO phonetic alphabet.
947
eb199145
GM
948\f
949* New Modes and Packages in Emacs 24.1
d445b3f8 950
5abc31ef 951+++
60e56523 952** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 953original buffers. It is bound to "e" in Occur mode.
60e56523 954
a075a2c5
GM
955** New global minor mode electric-pair-mode.
956When enabled, typing an open parenthesis automatically inserts the
957matching closing one.
958
959** New global minor mode electric-indent-mode.
960When enabled, typing certain characters triggers reindentation.
961
962** New global minor mode electric-layout-mode.
963When enabled, typing certain characters automatically inserts newlines.
3b843809 964
a83ec3c9
CY
965** tabulated-list.el provides a generic major mode for tabulated data,
966from which other modes can be derived.
967
d02c9bcd
SM
968** pcase.el provides the ML-style pattern matching macro `pcase'.
969
7725ebb7
MA
970** secrets.el is an implementation of the Secret Service API, an
971interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
972Secret Service API requires D-Bus for communication. The command
973`secrets-show-secrets' offers a buffer with a visualization of the
974secrets.
7725ebb7 975
f9e78150
MA
976** notifications.el provides an implementation of the Desktop
977Notifications API. It requires D-Bus for communication.
978
12fe5bcc
MA
979** soap-client.el supports access to SOAP web services from Emacs.
980soap-inspect.el is an interactive inspector for SOAP WSDL structures.
981
ff1796f3
GM
982---
983** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 984
cefee440 985---
53bbe3ad 986** New emacs-lock.el package.
cefee440
GM
987(The previous version has been moved to obsolete/old-emacs-lock.el.)
988Now, there is a proper minor mode `emacs-lock-mode'.
989Protection against exiting Emacs and killing the buffer can be set
990separately. The mechanism for automatically turning off protection
991for buffers with dead inferior processes has been generalized.
53bbe3ad 992
eb199145
GM
993\f
994* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 995
fa6996bc
EZ
996---
997** `char-direction-table' and the associated function `char-direction'
998were deleted. They were buggy and inferior to the new support of
999bidirectional editing introduced in Emacs 24. If you need the
1000bidirectional properties of a character, use `get-char-code-property'
1001with the last argument `bidi-class'.
1002
a6326082 1003+++
470d996d
TV
1004** `copy-directory' now copies the source directory as a subdirectory
1005of the target directory, if the latter is an existing directory. The
1006new optional arg COPY-CONTENTS, if non-nil, makes the function copy
1007the contents directly into a pre-existing target directory.
1008
25ca2e61
CY
1009** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
1010passes it to the mail user agent function. This argument specifies an
1011action for returning to the caller after finishing with the mail.
1012This is currently used by Rmail to delete a mail window.
1013
9173a8fb
CY
1014** For mouse click input events in the text area, the Y pixel
1015coordinate in the POSITION list now counts from the top of the text
1016area, excluding any header line. Previously, it counted from the top
1017of the header line.
1018
2b18055e
GM
1019---
1020** Support for "old-style" backquotes, which have been obsolete for
1021more than 10 years, has been further reduced. Now a backquote not
1022followed by a space is always treated as a "new-style" backquote.
1023Please consider completely removing all "old-style" backquotes from
1024your code as a matter of some urgency. If your code uses backquotes
1025as documented in the Elisp manual, and compiles without warning, then
1026you have nothing to do in this regard. Code not following the
1027appropriate conventions may fail to compile. The most common cause of
1028trouble seems to be an old-style backquote followed by a newline.
288cf4e9 1029
c31b4ce3 1030---
aab25355
GM
1031** view-buffer now treats special mode-class in the same way that
1032view-file has since Emacs 22 (ie, it won't enable View mode if the
1033major-mode is special).
fd5c9dfa 1034
e1ac4066 1035+++
60d47423
GM
1036** Passing a nil argument to a minor mode defined by define-minor-mode
1037now turns the mode ON unconditionally. This is so that you can write, e.g.
1038 (add-hook 'text-mode-hook 'foo-minor-mode)
1039to enable foo-minor-mode in Text mode buffers, thus removing the need
1040for `turn-on-foo-minor-mode' style functions.
6431f2e6 1041
ddb54206 1042+++
6431f2e6 1043** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
1044and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
1045With these alist entries omitted, `make-frame' checks the value of the
1046variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
1047a menu-bar or tool-bar, respectively. If the alist entries are added,
1048they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 1049
50b063c3 1050+++
fe0aa820
CY
1051** Regions created by mouse dragging are now normal active regions,
1052similar to the ones created by shift-selection. In previous Emacs
1053versions, these regions were delineated by `mouse-drag-overlay', which
1054has now been removed.
d6d8ee7a 1055
34c99998
GM
1056+++
1057** The fourth argument of filter-buffer-substring, which says to remove
1058text properties from the final result, has been removed.
1059Eg simply pass the result through substring-no-properties if you need this.
1060
334023be 1061---
4583e796
GM
1062** cl.el no longer provides `cl-19'.
1063
be890cb8
SM
1064** The menu bar bindings's caches are not used any more.
1065Use (where-is-internal <def> nil t) instead.
1066
3a970881
GM
1067+++
1068** The following obsolete (mostly since at least 21.1) functions and aliases
1069have been removed (the appropriate new function is given in parentheses):
1070comint-kill-output (comint-delete-output),
1071decompose-composite-char (char-to-string),
1072outline-visible (outline-invisible-p),
1073internal-find-face (facep), internal-get-face (facep and check-face),
1074frame-update-faces (not needed),
1075frame-update-face-colors (frame-set-background-mode),
1076x-frob-font-weight and x-frob-font-slant (appropriate make-face-* function),
1077x-make-font-bold and x-make-font-demibold (make-face-bold),
1078x-make-font-italic and x-make-font-oblique (make-face-italic),
1079x-make-font-bold-italic (make-face-bold-italic),
1080x-make-font-unbold (make-face-unbold),
1081x-make-font-unitalic (make-face-unitalic),
1082mldrag-drag-mode-line (mouse-drag-mode-line),
1083mldrag-drag-vertical-line (mouse-drag-vertical-line),
1084iswitchb-default-keybindings (iswitchb-mode), char-bytes (== 1),
1085isearch-return-char (isearch-printing-char), make-local-hook (not needed)
1086
1087+++
1088** The following obsolete (mostly since at least 21.1) variables and varaliases
1089have been removed (the appropriate new variable is given in parentheses):
1090checkdoc-minor-keymap (checkdoc-minor-mode-map),
1091vc-header-alist (vc-BACKEND-header), directory-sep-char (== ?/)
1092font-lock-defaults-alist (font-lock-defaults), and e (float-e).
3226d6ca 1093
334023be 1094---
041d709f 1095** The following obsolete files were removed:
7b0e3048
GM
1096sc.el, x-menu.el, rnews.el, rnewspost.el
1097
33658d4e
CY
1098** FIXME finder-inf.el changes.
1099
eb199145
GM
1100\f
1101* Lisp changes in Emacs 24.1
9097e8af 1102
735cc5ca 1103+++
041d709f
CY
1104** Code can now use lexical scoping by default instead of dynamic scoping.
1105The `lexical-binding' variable lets code use lexical scoping for local
48da7392
GM
1106variables. It is typically set via a file-local variable in the first
1107line of the file, in which case it applies to all the code in that file.
735cc5ca 1108+++
041d709f
CY
1109*** `eval' takes a new optional argument `lexical' to choose the new lexical
1110binding instead of the old dynamic binding mode.
735cc5ca 1111+++
041d709f
CY
1112*** Lexically scoped interpreted functions are represented with a new form
1113of function value which looks like (closure ENV ARGS &rest BODY).
1114
1115*** New macro `letrec' to define recursive local functions.
735cc5ca 1116+++
041d709f
CY
1117*** New function `special-variable-p' to check whether a variable is
1118declared as dynamically bound.
1119
d273439c 1120+++
041d709f
CY
1121** An Emacs Lisp testing tool is now included.
1122Emacs Lisp developers can use this tool to write automated tests for
1123their code. See the ERT info manual for details.
1124
1125** Changes for bidirectional display and editing
f1816485 1126
041d709f
CY
1127+++
1128*** New function `current-bidi-paragraph-direction'.
f1816485
EZ
1129This returns the actual value of base direction of the paragraph at
1130point.
041d709f
CY
1131
1132+++
1133*** New function `bidi-string-mark-left-to-right'.
f1816485
EZ
1134Given a string containing characters from right-to-left (RTL) scripts,
1135this function returns another string which can be safely inserted into
1136a buffer, such that any following text will be always displayed to the
1137right of that string. (This works by appending the Unicode
1138"LEFT-TO-RIGHT MARK" character when the argument string might need that.)
041d709f
CY
1139
1140This is useful when the buffer has overall left-to-right (LTR)
1141paragraph direction and you need to insert a string whose contents and
f1816485
EZ
1142directionality are not known in advance, without disrupting the layout
1143of the line.
041d709f 1144
bee0fcef 1145** Window changes
c4682d18
MR
1146+++
1147*** Window tree functions are accessible in Elisp.
1148Functions are provided to return the parent, siblings or child windows
1149of any window including internal windows (windows not associated with a
1150buffer) in the window tree.
291d142b 1151+++
24300f5f
CY
1152**** New function `window-valid-p' gives non-nil for live and internal
1153windows.
c4682d18 1154+++
24300f5f 1155**** Window manipulation can deal with internal windows.
c4682d18
MR
1156Many window handling functions like `split-window', `delete-window', or
1157`delete-other-windows' as well as the window resizing functions can now
1158act on any window including internal ones.
c4682d18
MR
1159+++
1160*** window-total-height/-width vs window-body-height/-width.
1161The function `window-height' has been renamed to `window-total-height'
1162and `window-width' has been renamed to `window-body-width'. The old
1163names are provided as aliases. Two new functions `window-total-width'
1164and `window-body-height' are provided.
c4682d18
MR
1165+++
1166*** Window parameters specific to window handling functions.
1167For each window you can specify a parameter to override the default
1168behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
1169and `delete-other-windows'. The variable `ignore-window-parameters'
1170allows to ignore processing such parameters.
c4682d18
MR
1171+++
1172*** New semantics of third argument of `split-window'.
c4682d18
MR
1173The third argument of `split-window' has been renamed to SIDE and can be
1174set to any of the values 'below, 'right, 'above, or 'left to make the
1175new window appear on the corresponding side of the window that shall be
1176split. Any other value of SIDE will cause `split-window' to split the
1177window into two side-by-side windows as before.
c4682d18
MR
1178+++
1179*** Window resizing functions.
487ffd7a 1180A new standard function for resizing windows called `window-resize' has
c4682d18
MR
1181been introduced. This and all other functions for resizing windows no
1182longer delete any windows when they become too small.
b3c0dbfd
MR
1183+++
1184*** Deleting the selected window now selects the most recently selected
1185live window on that frame instead.
c4682d18
MR
1186+++
1187*** `adjust-window-trailing-edge' adjustments.
1188`adjust-window-trailing-edge' can now deal with fixed-size windows and
1189is able to resize other windows if a window adjacent to the trailing
1190edge cannot be shrunk any more. This makes its behavior more similar to
1191that of Emacs 21 without compromising, however, its inability to delete
1192windows which was introduced in Emacs 22.
c4682d18
MR
1193+++
1194*** Window-local buffer lists.
1195Windows now have local buffer lists. This means that removing a buffer
1196from display in a window will preferably show the buffer previously
1197shown in that window with its previous window-start and window-point
1198positions. This also means that the same buffer may be automatically
1199shown twice even if it already appears in another window.
0e406a72 1200+++
bee0fcef
CY
1201*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
1202which if non-nil requires the buffer to be displayed in the currently
1203selected window, signaling an error otherwise. If nil, another window
1204can be used, e.g. if the selected one is strongly dedicated.
24300f5f 1205+++
0a2132ba 1206*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
1207to `split-window-below' and `split-window-right' respectively.
1208The old names are kept as aliases.
24300f5f 1209+++
0a2132ba
CY
1210*** Display actions
1211
1212**** The second arg to `display-buffer' and `pop-to-buffer' is now
1213named ACTION, and takes a display action of the same form as
1214`display-buffer-base-action' (see Changes, above). A non-nil,
1215non-list value is treated specially, as the old meaning.
1216
1217**** New variable `display-buffer-overriding-action'.
1218
1219**** The procedure of `display-buffer' etc. to choose a window is
1220determined by combining `display-buffer-overriding-action',
1221`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
1222and `display-buffer-fallback-action'. The second and fourth of these
1223are user-customizable variables.
1224
1225See the docstring of `display-buffer' for details.
bee0fcef 1226
ed6235ea
MR
1227+++
1228*** New behavior of `quit-window'.
1229The behavior of `quit-window' has been changed in order to restore the
1230state before the last buffer display operation in that window.
1231
d83dc65b
MR
1232+++
1233*** The new option `frame-auto-hide-function' lets you choose between
53964682 1234iconifying or deleting a frame when burying a buffer shown in a dedicated
d83dc65b
MR
1235frame or quitting a window showing a buffer in a frame of its own.
1236
20d2304d
CY
1237+++
1238*** New functions `window-state-get' and `window-state-put'.
1239These functions allow to save and restore the state of an arbitrary
1240frame or window as an Elisp object.
1241
a2a25d24 1242** Completion
041d709f 1243
a2a25d24
SM
1244*** New variable completion-extra-properties used to specify extra properties
1245of the current completion:
1246- :annotate-function, same as the old completion-annotate-function.
1247- :exit-function, function to call after completion took place.
1248
1249*** Functions on completion-at-point-functions can return any of the properties
1250valid for completion-extra-properties.
1251
1252*** completion-annotate-function is obsolete.
1253
620c53a6
SM
1254*** New `metadata' method for completion tables. The metadata thus returned
1255can specify various details of the data returned by `all-completions':
1256- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
1257 used to select a style in completion-category-overrides.
1258- `annotation-function' to add annotations in *Completions*.
1259- `display-sort-function' to specify how to sort entries in *Completions*.
1260- `cycle-sort-function' to specify how to sort entries when cycling.
1261
de09aa52
CY
1262*** minibuffer-local-filename-must-match-map is not used any more.
1263Instead, the bindings in minibuffer-local-filename-completion-map are
1264combined with minibuffer-local-must-match-map.
1265
1266*** New variable `completing-read-function' allows overriding the
1267behavior of `completing-read'.
1268
d366bd53 1269+++
f042970d 1270** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
1271text terminal display, via a char-table entry that is a cons cell.
1272
da91b5f2
CY
1273** `open-network-stream' can now be used to open an encrypted stream.
1274It now accepts an optional `:type' parameter for initiating a TLS
1275connection, directly or via STARTTLS. To do STARTTLS, additional
1276parameters (`:end-of-command', `:success', `:capabilities-command')
1277must also be supplied.
1278
ddb54206 1279+++
f6d62986
SM
1280** pre/post-command-hook are not reset to nil upon error.
1281Instead, the offending function is removed.
1282
b1f6fa26
CY
1283** New hook types
1284
e7bc51d0 1285+++
b1f6fa26
CY
1286*** New function `run-hook-wrapped' for running an abnormal hook by
1287passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 1288Like `run-hook-with-args-until-success', it stops at the first
5385447f 1289non-nil return value.
e7bc51d0 1290
b1f6fa26
CY
1291+++
1292*** New macro `with-wrapper-hook' for running an abnormal hook as a
1293set of "wrapping" filters, similar to around advice.
54521c99
GM
1294(A version of this macro was actually added in Emacs 23.2 but was not
1295advertised at the time.)
f6d62986 1296
866c1d22
GM
1297+++
1298** The macros `condition-case-no-debug' and `with-demoted-errors' were
1299added in Emacs 23.1, but not advertised.
d6b1d521 1300
953cebf5
GM
1301+++
1302** The new function `server-eval-at' allows evaluation of Lisp forms on
1303named Emacs server instances, using TCP sockets.
7deebf1b 1304
1b9f60cc
GM
1305+++
1306** `call-process' and `call-process-region' allow a `(:file "file")' spec
1307to redirect STDOUT to a file.
7deebf1b 1308
04e2ce72
CY
1309---
1310** Variable `stack-trace-on-error' removed.
e7f7fbaa
SM
1311Also the debugger can now "continue" from an error, which means it will jump
1312to the error handler as if the debugger had not been invoked instead of
1313jumping all the way to the top-level.
1314
da97a9e6
CY
1315+++
1316** The function format-time-string now supports the %N directive, for
1317higher-resolution time stamps.
1318
7e2734bc 1319+++
3ef01959
CY
1320** New function `read-char-choice' reads a restricted set of characters,
1321discarding any inputs not inside the set.
1322
4dee2dea 1323+++
2e288d54
JB
1324** `image-library-alist' is renamed to `dynamic-library-alist'.
1325The variable is now used to load all kind of supported dynamic libraries,
1326not just image libraries. The previous name is still available as an
1327obsolete alias.
1328
04e2ce72
CY
1329** New variable `syntax-propertize-function'.
1330This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
1331This allows syntax-table properties to be set independently from font-lock:
1332just call syntax-propertize to make sure the text is propertized.
1333Together with this new variable come a new hook
1334syntax-propertize-extend-region-functions, as well as two helper functions:
1335syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
1336as-is; and syntax-propertize-rules which provides a new way to specify
1337syntactic rules.
1338
f58b9822 1339+++
a2e5caf7
SM
1340** New hook post-self-insert-hook run at the end of self-insert-command.
1341
7cf78aac 1342+++
c5683ceb 1343** Syntax tables support a new "comment style c" additionally to style b.
041d709f 1344
4dee2dea 1345---
4e2db1fe 1346** frame-local variables cannot be let-bound any more.
041d709f 1347
15de15c6 1348** Major and minor mode changes
3fd50d5c 1349+++
15de15c6
CY
1350*** `prog-mode' is a new major mode from which programming modes
1351should be derived.
041d709f 1352
c2f03a4a 1353+++
15de15c6
CY
1354**** `prog-mode-hook' can be used to enable features for programming
1355modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
1356on-the-fly spell checking for comments and strings.
1357
12f381b7 1358+++
15de15c6
CY
1359*** New hook `change-major-mode-after-body-hook', run by
1360`run-mode-hooks' just before any other mode hooks.
1361
c7301fe4 1362+++
7a9a2fc6
GM
1363*** Enabled globalized minor modes can be disabled in specific major modes.
1364If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
1365major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
15de15c6 1366
56afad3a 1367+++
15de15c6 1368*** `define-minor-mode' accepts a new keyword :variable.
f44379e7 1369
04e2ce72 1370+++
b2957ea8 1371** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
1372Trashing is performed if TRASH and `delete-by-moving-to-trash' are
1373both non-nil. Interactively, TRASH defaults to t, unless a prefix
1374argument is supplied (see Trash changes, above).
53967e09 1375
94bc7984 1376---
9317e499 1377** `facemenu-read-color' is now an alias for `read-color'.
94bc7984
GM
1378
1379+++
1380** The command `read-color' now requires a match for a color name
1381or RGB triplet, instead of signaling an error if the user provides
1382invalid input.
9317e499 1383
f7c9199f 1384+++
4039c786
CY
1385** Tool-bars can display separators.
1386Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 1387i.e. via menu entries of the form `(menu-item "--")'.
9317e499 1388
00fe2df1
JL
1389** Image API
1390
eea14f31 1391+++
18af70d0
CY
1392*** Animated images support (currently animated gifs only).
1393
eea14f31 1394+++
18af70d0
CY
1395**** `image-animated-p' returns non-nil if an image can be animated.
1396
eea14f31 1397+++
18af70d0
CY
1398**** `image-animate' animates a supplied image spec.
1399
eea14f31 1400+++
18af70d0
CY
1401**** `image-animate-timer' returns the timer object for an image that
1402is being animated.
00fe2df1 1403
7cb76fe0
GM
1404---
1405*** `image-extension-data' has been renamed to `image-metadata'.
1406The old name is an obsolete alias to the new one.
1546c559 1407
bba26374 1408+++
b4ac6e8c
GM
1409*** Image mode can view any image type that ImageMagick supports.
1410This requires Emacs to be built with ImageMagick support.
31fd3586
GM
1411Then the function `imagemagick-types' returns a list of image file
1412extensions that your installation of ImageMagick supports. The
041d709f
CY
1413function `imagemagick-register-types' enables ImageMagick support for
1414these image types, minus those listed in `imagemagick-types-inhibit'.
bba26374 1415Visiting one of these file types will then use Image mode.
041d709f 1416
b4ac6e8c
GM
1417---
1418*** New commands to resize and rotate images in Image mode.
1419These require Emacs to be built with ImageMagick support.
1420image-transform-fit-to-height, image-transform-fit-to-width,
1421image-transform-set-rotation, image-transform-set-scale.
1422
71c17aec 1423** XML and HTML parsing
043efd56
GM
1424If Emacs is compiled with libxml2 support, there are two new functions:
1425`libxml-parse-html-region' (which parses "real world" HTML) and
1426`libxml-parse-xml-region' (which parses XML). Both return an Emacs
1427Lisp parse tree.
4b9832a6
CY
1428
1429FIXME: These should be front-ended by xml.el.
1430
e2574f2c
TZ
1431** GnuTLS
1432
31fd3586 1433*** New library `gnutls.el'.
573559b4 1434This requires Emacs to have been built with GnuTLS support.
31fd3586
GM
1435The main functions are `open-gnutls-stream' and `gnutls-negotiate'.
1436It's easiest to use these functions through `open-network-stream'
1437because it can upgrade connections through STARTTLS opportunistically
1438or use plain SSL, depending on your needs. For debugging, set
1439`gnutls-log-level' greater than 0.
71c17aec 1440
a6020335
MH
1441** Isearch
1442
7cb76fe0 1443---
a6020335
MH
1444*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
1445
ddb54206 1446+++
9326ba26
CY
1447** Progress reporters can now "spin".
1448The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
1449now be nil, or omitted. This makes a "non-numeric" reporter. Each
1450time you call `progress-reporter-update' on that progress reporter,
1451with a nil or omitted VALUE argument, the reporter message is
1452displayed with a "spinning bar".
1453
8f05da42 1454+++
3e214b50
JB
1455** New variable `revert-buffer-in-progress-p' is true while a buffer is
1456being reverted, even if the buffer has a local `revert-buffer-function'.
1457
638f053a
JB
1458** New variables `delayed-warnings-list' and `delayed-warnings-hook' allow
1459deferring warnings until the main command loop is executed.
1460
e145f188
GM
1461+++
1462** `set-auto-mode' now respects mode: local variables at the end of files,
1463as well as those in the -*- line.
1464
6420d28b
CY
1465---
1466** rx.el has a new `group-n' construct for explicitly numbered groups.
1467
dac86404
GM
1468+++
1469** New function `make-composed-keymap' that constructs a new keymap
1470from multiple input maps. You can use this to make a keymap that
1471inherits from multiple maps, eg:
1472 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 1473
7aa5aad8
GM
1474+++
1475** Set `debug-on-event' to make Emacs enter the debugger e.g. on receipt
1476of SIGUSR1. This can be useful when `inhibit-quit' is set.
12ca40ec 1477
ddb54206 1478+++
27f7ef2f 1479** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
1480This means that the empty symbol can now be read back. Also, #: by itself
1481(when not immediately followed by a possible symbol character) stands for
1482an empty uninterned symbol.
041d709f 1483
fead402d
CY
1484+++
1485** New math functions `isnan', `copysign', `frexp', `ldexp'.
1486
041d709f
CY
1487** Obsolete functions and variables
1488
05f77e38
GM
1489---
1490*** `tooltip-use-echo-area' is obsolete.
1491Rather than setting this to t, disable Tooltip mode instead.
1492
34c99998 1493+++
041d709f
CY
1494*** buffer-substring-filters is obsolete.
1495Use `filter-buffer-substring-functions' instead.
1496
7cb76fe0 1497---
041d709f
CY
1498*** `byte-compile-disable-print-circle' is obsolete.
1499
f160676e 1500---
041d709f 1501*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
1502Use `post-command-hook' instead.
1503
d366bd53 1504+++
67e729a5
CY
1505*** `font-lock-maximum-size' is obsolete.
1506
eb199145
GM
1507\f
1508* Changes in Emacs 24.1 on non-free operating systems
d53a60a6 1509
a2f0118c 1510---
7a22e700 1511** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
1512and also when HOME is set to C:\ by default.
1513
7a22e700 1514** New configure.bat options
04779484 1515
a0d363f4 1516+++
7a22e700 1517*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 1518
a0d363f4 1519+++
7a22e700 1520*** --distfiles specifies files to be included in binary distribution.
e2574f2c 1521
a0d363f4 1522+++
7a22e700
OK
1523*** --without-gnutls disables automatic GnuTLS detection.
1524
a0d363f4
GM
1525+++
1526*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 1527
a0d363f4 1528+++
0a19a6f8 1529** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 1530
1f5e1a16
GM
1531---
1532** The Lisp function `w32-default-color-map' is now obsolete.
1533(It is only used internally in the Emacs C code.)
5430d399 1534
1f5e1a16
GM
1535+++
1536** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
1537reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 1538
05197f40 1539\f
a933dad1 1540----------------------------------------------------------------------
5b87ad55 1541This file is part of GNU Emacs.
a933dad1 1542
ab73e885 1543GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 1544it under the terms of the GNU General Public License as published by
ab73e885
GM
1545the Free Software Foundation, either version 3 of the License, or
1546(at your option) any later version.
5b87ad55
GM
1547
1548GNU Emacs is distributed in the hope that it will be useful,
1549but WITHOUT ANY WARRANTY; without even the implied warranty of
1550MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1551GNU General Public License for more details.
a933dad1 1552
5b87ad55 1553You should have received a copy of the GNU General Public License
ab73e885 1554along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 1555
05197f40 1556\f
a933dad1
DL
1557Local variables:
1558mode: outline
1559paragraph-separate: "[ \f]*$"
1560end: