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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
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177*** The M-x report-emacs-bug command can optionally pass the text of
178your bug report to your desktop's preferred mail client. This
179uses either the "xdg-email" utility, or OS X's "open" command.
180
041d709f 181** Emacs server and client changes
ddb54206 182+++
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183*** New option `server-port' specifies the port on which the Emacs
184server should listen.
185+++
186*** New emacsclient argument -q/--quiet suppresses some status messages.
187+++
188*** New emacsclient argument --frame-parameters can be used to set the
189frame parameters of a newly-created graphical frame.
190+++
8350f087 191*** If emacsclient shuts down as a result of Emacs signaling an
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192error, its exit status is 1.
193+++
194*** New emacsclient argument --parent-id ID.
195This opens a client frame in parent X window ID, via XEmbed, similar
196to the --parent-id argument to Emacs.
197
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198** Internationalization changes
199
f4b6ba46 200+++
d0ce9f8c 201*** Emacs now supports display and editing of bidirectional text.
f4b6ba46 202
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203Text that includes characters from right-to-left (RTL) scripts, such
204as Arabic, Farsi, or Hebrew, is displayed in the correct visual order
205as expected by users of those scripts. This display reordering is a
206"Full bidirectionality" class implementation of the Unicode
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207Bidirectional Algorithm. Buffers with no RTL text should look exactly
208the same as before.
f4b6ba46 209
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210For more information, see the node "Bidirectional Editing" in the
211Emacs Manual.
f4b6ba46 212
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213+++
214**** New buffer-local variable `bidi-display-reordering'.
215To disable display reordering in any given buffer, change this to nil.
d20e1419 216
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217+++
218**** New buffer-local variable `bidi-paragraph-direction'.
219If nil (the default), Emacs determines the base direction of each
220paragraph from its text, as specified by the Unicode Bidirectional
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221Algorithm.
222
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223Setting this to `right-to-left' or `left-to-right' forces a particular
224base direction on each paragraph in the buffer.
225
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226Paragraphs whose base direction is right-to-left are displayed
227starting at the right margin of the window.
228
d0ce9f8c 229+++
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230*** Enhanced support for characters with no glyphs in available fonts.
231If a character has no glyphs in any of the available fonts, Emacs
232normally displays it either as a hexadecimal code in a box or as a
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233thin 1-pixel space. In addition to these two methods, Emacs can
234display these characters as empty box, as an acronym, or not display
235them at all. To change how these characters are displayed, customize
236the variable `glyphless-char-display-control'.
237
041d709f 238On character terminals, these methods are used for characters that
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239cannot be encoded by the `terminal-coding-system'.
240
ddb54206 241---
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242*** New input methods for Farsi: farsi and farsi-translit.
243
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244+++
245*** `nobreak-char-display' now also highlights Unicode hyphen chars
246(U+2010 and U+2011).
247
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248---
249*** New translation of the Emacs Tutorial in Hebrew is available.
250Type `C-u C-h t' to choose it in case your language setup doesn't
251automatically select it.
252
041d709f 253** Improved GTK integration
da97a9e6 254+++
041d709f 255*** GTK scroll-bars are now placed on the right by default.
52834b6b 256Use `set-scroll-bar-mode' to change this.
da97a9e6 257+++
041d709f 258*** GTK tool bars can have just text, just images or images and text.
d8004abe 259Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
20fe03ad 260is taken from the desktop settings.
da97a9e6 261---
041d709f 262*** GTK tool bars can be placed on the left/right or top/bottom of the frame.
8b2dd508 263The frame-parameter tool-bar-position controls this. It takes the values
1c0d77cc 264top, left, right or bottom. The Options => Show/Hide menu has entries
8b2dd508 265for this.
d366bd53 266+++
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267*** The colors for selected text (the `region' face) are taken from
268the GTK theme when Emacs is built with GTK.
d366bd53 269+++
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270*** Emacs uses GTK tooltips by default if built with GTK. You can turn that
271off by customizing x-gtk-use-system-tooltips.
16a91140 272
35137ed3 273+++
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274** New basic faces `error', `warning', `success' are available to
275highlight strings that indicate failure, caution or successful operation.
276
b22b1918 277---
1ecb2d3f 278** Lucid menus and dialogs can display antialiased fonts if Emacs is built
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279with Xft. To change font, use the X resource font, for example:
280Emacs.pane.menubar.font: Courier-12
99852628 281
21100e7d 282+++
917794d5 283** On graphical displays, the mode-line no longer ends in dashes.
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284Also, the first dash (which does not indicate anything) is just
285displayed as a space.
917794d5 286
a49ca6b9 287+++
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288** Basic SELinux support has been added.
289This requires Emacs to be linked with libselinux at build time.
290
a49ca6b9 291+++
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292*** Emacs preserves the SELinux file context when backing up, and
293optionally when copying files. To this end, copy-file has an extra
294optional argument, and backup-buffer and friends include the SELinux
295context in their return values.
b7d65a5f 296
a49ca6b9 297+++
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298*** The new functions file-selinux-context and set-file-selinux-context
299get and set the SELinux context of a file.
bfd779dd 300---
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301*** Tramp offers handlers for file-selinux-context and set-file-selinux-context
302for remote machines which support SELinux.
303
041d709f 304** Changes for exiting Emacs
ddb54206 305+++
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306*** The function kill-emacs is now run upon receipt of the signals
307SIGTERM and SIGHUP, and upon SIGINT in batch mode.
ddb54206 308+++
041d709f 309*** kill-emacs-hook is now also run in batch mode.
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310If you have code that adds something to kill-emacs-hook, you should
311consider if it is still appropriate to add it in the noninteractive case.
9c524fcb 312
041d709f 313** Scrolling changes
550f41cd 314+++
041d709f 315*** New scrolling commands `scroll-up-command' and `scroll-down-command'
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316(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
317of buffer at first key-press (instead move to top/bottom of buffer)
550f41cd 318when `scroll-error-top-bottom' is non-nil.
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319+++
320*** New variable `scroll-error-top-bottom' (see above).
e7a3ff06 321+++
041d709f 322*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 323scroll a line instead of full screen.
550f41cd 324+++
041d709f 325*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 326define it as a scroll command affected by `scroll-preserve-screen-position'.
d0f69533 327+++
041d709f 328*** If you customize `scroll-conservatively' to a value greater than 100,
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329Emacs will never recenter point in the window when it scrolls due to
330cursor motion commands or commands that move point (e.f., `M-g M-g').
331Previously, you needed to use `most-positive-fixnum' as the value of
332`scroll-conservatively' to achieve the same effect.
d0f69533 333---
041d709f 334*** ``Aggressive'' scrolling now honors the scroll margins.
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335If you customize `scroll-up-aggressively' or
336`scroll-down-aggressively' and move point off the window, Emacs now
337scrolls the window so as to avoid positioning point inside the scroll
338margin.
339
f1a5d776 340** Trash changes
04e2ce72 341+++
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342*** `delete-by-moving-to-trash' now only affects commands that specify
343trashing. This avoids inadvertently trashing temporary files.
04e2ce72 344+++
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345*** Calling `delete-file' or `delete-directory' with a prefix argument
346now forces true deletion, regardless of `delete-by-moving-to-trash'.
347
05f77e38 348+++
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349** New option `list-colors-sort' defines the color sort order
350for `list-colors-display'.
351
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352** An Emacs Lisp package manager is now included.
353This is a convenient way to download and install additional packages,
3fd50d5c 354from a package repository at http://elpa.gnu.org.
d43f5a42 355+++
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356*** `M-x list-packages' shows a list of packages, which can be
357selected for installation.
d43f5a42 358+++
cb6c4991 359*** New command `describe-package', bound to `C-h P'.
d43f5a42 360+++
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361*** By default, all installed packages are loaded and activated
362automatically when Emacs starts up. To disable this, set
363`package-enable-at-startup' to nil. To change which packages are
364loaded, customize `package-load-list'.
365
f065864f 366** Custom Themes
b0d7d8af 367+++
f065864f 368*** `M-x customize-themes' lists Custom themes which can be enabled.
b0d7d8af 369+++
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370*** New option `custom-theme-load-path' is the load path for themes.
371Emacs no longer looks for custom themes in `load-path'. The default
372is to search in `custom-theme-directory', followed by a built-in theme
373directory named "themes/" in `data-directory'.
b0d7d8af 374+++
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375*** New option `custom-safe-themes' records known-safe theme files.
376If a theme is not in this list, Emacs queries before loading it, and
377offers to save the theme to `custom-safe-themes' automatically. By
378default, all themes included in Emacs are treated as safe.
278f6845 379
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380** The user option `remote-file-name-inhibit-cache' controls whether
381the remote file-name cache is used for read access.
382
041d709f 383** File- and directory-local variable changes
b8f82dc1 384+++
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385*** You can stop directory local vars from applying to subdirectories.
386Add an element (subdirs . nil) to the alist portion of any variables
387settings to indicate that the section should not apply to
388subdirectories.
89bd9ccd 389+++
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390*** Directory local variables can apply to some file-less buffers.
391Affected modes include dired, vc-dir, and log-edit. For example,
392adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
393turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
394`hack-dir-local-variables-non-file-buffer' to support this.
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395+++
396*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
397Instead, use "eval: (minor-mode 1)".
c136e5cd 398
61086eb6 399+++
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400*** The variable `inhibit-first-line-modes-regexps' has been renamed
401to `inhibit-local-variables-regexps'. As the name suggests, it now
402applies to ALL file local variables, not just -*- mode ones.
403The associated `inhibit-first-line-modes-suffixes' has been renamed
404in the corresponding way.
405
fdeb32ec 406+++
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407** The variable `focus-follows-mouse' now always defaults to nil.
408
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409** New primitive `secure-hash' that supports many secure hash algorithms
410including md5, sha-1 and sha-2 (sha-224, sha-256, sha-384 and sha-512).
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411The elisp implementation sha1.el is removed. Feature sha1 is provided
412by default.
413
5d907d6c 414** Menu-bar changes
b22b1918 415---
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416*** `menu-bar-select-buffer-function' lets you choose another operation
417instead of `switch-to-buffer' when selecting an item in the Buffers menu.
418
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419** Window changes
420
421+++
422*** Resizing an Emacs frame now preserves proportional window sizes,
423modulo restrictions like window minimum sizes and fixed-size windows.
424
425*** The behavior of `display-buffer' is now customizable in detail.
717a1362 426+++
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427**** New option `display-buffer-base-action' specifies a list of
428user-determined display "actions" (functions and optional arguments
429for choosing the displaying window).
430
431This takes precedence over the default display action, which is
432specified by `display-buffer-fallback-action'.
433
717a1362 434+++
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435**** New option `display-buffer-alist' maps buffer name regexps to
436display actions, taking precedence over `display-buffer-base-action'.
437
438+++
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439*** New option `window-combination-limit'.
440The new option `window-combination-limit' allows to return the space
441obtained for resizing or creating a window more reliably to the window
442from which such space was obtained.
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443
444+++
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445*** New option `window-combination-resize'.
446The new option `window-combination-resize' allows to split a window that
447otherwise cannot be split because it's too small by stealing space from
448other windows in the same combination. Subsequent resizing or deletion
449of the window will resize all windows in the same combination as well.
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450
451+++
452*** New commands `maximize-window' and `minimize-window'.
53964682 453These maximize and minimize the size of a window within its frame.
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454
455+++
456*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
457These functions allow to navigate through the live buffers that have
458been shown in a specific window.
459
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460** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
461This is handy for minibuffer-only frames, and is also used for the "mouse-1
462pops up *Messages*" feature, which can now easily be changed.
463
0bfd685e 464\f
eb199145 465* Editing Changes in Emacs 24.1
b350bdf2 466
892777ba 467** Search changes
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468+++
469*** C-y in Isearch is now bound to isearch-yank-kill, instead of
470isearch-yank-line.
5abc31ef 471+++
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472*** M-y in Isearch is now bound to isearch-yank-pop, instead of
473isearch-yank-kill.
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474+++
475*** M-s C-e in Isearch is now bound to isearch-yank-line.
476
ea4f7750 477+++
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478** New commands `count-words-region' and `count-words'.
479
480*** `count-lines-region' is now an alias for `count-words-region',
481bound to M-=, which shows the number of lines, words, and characters.
ea4f7750 482
bfd779dd 483+++
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484** The default value of `backup-by-copying-when-mismatch' is now t.
485
21100e7d 486+++
ec9da840 487** The command `just-one-space' (M-SPC), if given a negative argument,
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488also deletes newlines around point.
489
b9229673 490** Deletion changes
50b063c3 491+++
b9229673 492*** New option `delete-active-region'.
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493If non-nil, [delete] and DEL delete the region if it is active and no
494prefix argument is given. If set to `kill', these commands kill
495instead.
50b063c3 496+++
59ee0542 497*** New command `delete-forward-char', bound to [delete].
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498This is meant for interactive use, and obeys `delete-active-region'.
499The command `delete-char' does not obey `delete-active-region'.
50b063c3 500---
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501*** `delete-backward-char' is now a Lisp function.
502Apart from obeying `delete-active-region', its behavior is unchanged.
503However, the byte compiler now warns if it is called from Lisp; you
504should use delete-char with a negative argument instead.
ddb54206 505---
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506*** The option `mouse-region-delete-keys' has been deleted.
507
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508** Selection changes.
509
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510The default handling of clipboard and primary selections was changed
511to conform with modern X applications. In short, most commands for
512killing and yanking text now use the clipboard, while mouse commands
513use the primary selection.
514
515In the following, we provide a list of these changes, followed by a
516list of steps to get the old behavior back if you prefer that.
517
963578d3 518+++
b1ab31ae
CY
519*** `select-active-regions' now defaults to t.
520Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 521the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
522the system possesses a separate primary selection facility (e.g. X).
523
963578d3 524+++
b1ab31ae
CY
525**** `select-active-regions' also accepts a new value, `only'.
526This means to only set the primary selection for temporarily active
527regions (usually made by mouse-dragging or shift-selection);
528"ordinary" active regions, such as those made with C-SPC followed by
529point motion, do not alter the primary selection.
530
963578d3
CY
531---
532**** `mouse-drag-copy-region' now defaults to nil.
533
534+++
b1ab31ae
CY
535*** mouse-2 is now bound to `mouse-yank-primary'.
536This pastes from the primary selection, ignoring the kill-ring.
537Previously, mouse-2 was bound to `mouse-yank-at-click'.
538
963578d3 539+++
b1ab31ae 540*** `x-select-enable-clipboard' now defaults to t on all platforms.
963578d3 541+++
b1ab31ae
CY
542*** `x-select-enable-primary' now defaults to nil.
543Thus, commands that kill text or copy it to the kill-ring (such as
544M-w, C-w, and C-k) also use the clipboard---not the primary selection.
545
963578d3 546---
b1ab31ae
CY
547**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
548exactly equivalent to, respectively M-w, C-w, and C-y.
549
963578d3 550---
b1ab31ae
CY
551**** Note that on MS-Windows, `x-select-enable-clipboard' was already
552non-nil by default, as Windows does not support the primary selection
553between applications.
554
963578d3 555---
b1ab31ae 556*** To return to the previous behavior, do the following:
104c2fe9 557**** Change `select-active-regions' to nil.
b1ab31ae
CY
558**** Change `mouse-drag-copy-region' to t.
559**** Change `x-select-enable-primary' to t (on X only).
560**** Change `x-select-enable-clipboard' to nil.
561**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 562
963578d3 563+++
084e6df3
JD
564*** Support for X cut buffers has been removed.
565
3fd50d5c
CY
566*** X clipboard managers are now supported.
567To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 568
50b063c3 569+++
99f053cf 570** New command `rectangle-number-lines', bound to `C-x r N', numbers
6b2c221e 571the lines in the current rectangle. With a prefix argument, this
99f053cf
JA
572prompts for a number to count from and for a format string.
573
6bf7006f 574+++
db7ab02f 575** The default value of redisplay-dont-pause is now t
6bf7006f
EZ
576This makes Emacs feel more responsive to editing commands that arrive
577at high rate, e.g. if you lean on some key, because stopping redisplay
578in the middle (when this variable is nil) forces more expensive
579updates later on, and Emacs appears to be unable to keep up.
580
e70b5064
CY
581+++
582** The behavior of <TAB> for active regions in Text mode has changed.
583In Text and related modes, typing <TAB> (`indent-for-tab-command')
584when the region is active causes Emacs to indent all the lines in the
585region, aligning them with the line previous to the first line in the
586region (or with the left margin if there is no previous line).
587
9bae34bf 588\f
eb199145 589* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 590
bfd779dd 591+++
041d709f 592** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 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
523eedb0
GM
643** Browse-url
644
645+++
646*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
647
648---
649*** The default browser used by the package is now the "xdg-open" program,
650on platforms that support it. This calls your desktop's preferred browser.
651
041d709f
CY
652** CC Mode (C, C++, etc.)
653
654*** New feature to "guess" the style in an existing buffer.
655
656** comint and modes derived from it use the generic completion code.
657
658** Compilation mode
29eabb8e 659---
041d709f
CY
660*** Compilation mode can be used without font-lock-mode.
661`compilation-parse-errors-function' is now obsolete.
662
663*** `compilation-filter-start' is let-bound to the start of the text
664inserted by the compilation filter function, when calling
665compilation-filter-hook.
666
47a6a35f
GM
667*** `compilation-error-screen-columns' and `compilation-first-column'
668are obeyed in the editing buffer. So programming language modes can
669set them, whereas previously only the value in the *compilation* buffer
670was used.
1dce7193 671
52834b6b
CY
672** Customize
673
b0d7d8af 674+++
52834b6b
CY
675*** Customize buffers now contain a search field.
676The search is performed using `customize-apropos'.
42d9cffa 677To turn off the search field, set custom-search-field to nil.
52834b6b 678
b0d7d8af 679+++
52834b6b
CY
680*** Custom options now start out hidden if at their default values.
681Use the arrow to the left of the option name to toggle visibility.
682
ff1796f3 683---
52834b6b
CY
684*** custom-buffer-sort-alphabetically now defaults to t.
685
b0d7d8af 686+++
52834b6b
CY
687*** The color widget now has a "Choose" button, which allows you to
688choose a color via list-colors-display.
689
041d709f
CY
690** D-Bus
691
692*** It is possible now, to access alternative buses than the default
693system or session bus.
694
695*** dbus-register-{service,method,property}
696The -method and -property functions do not automatically register
697names anymore.
698
699The new function dbus-register-service registers a service known name
700on a D-Bus without simultaneously registering a property or a method.
701
f5d6548a 702** Dired-x
c40a7de7 703---
f5d6548a
JL
704*** dired-jump and dired-jump-other-window called with a prefix argument
705read a file name from the minibuffer instead of using buffer-file-name.
706
817b48a7
GM
707+++
708*** The `dired local variables' feature provided by Dired-x is obsolete.
709The standard directory local variables feature replaces it.
8117868f 710
041d709f 711** ERC changes
7492acc9 712
c4077254
GM
713---
714*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
715controlling attempts to autojoin a channel.
041d709f
CY
716
717*** New variable `erc-coding-system-precedence': If we use `undecided'
718as the server coding system, this variable will then be consulted.
719The default is to decode strings that can be decoded as utf-8 as
720utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 721
041d709f 722** Eshell changes
7492acc9 723
05f77e38
GM
724---
725*** The default value of `eshell-directory-name' has changed
726to be an "eshell" directory in `user-emacs-directory'.
727The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
728
729** gdb-mi
88c5c7c8 730+++
05f77e38
GM
731*** The GDB User Interface has been migrated to GDB Machine Interface.
732It now supports multithread non-stop debugging and simultaneous
733debugging of several threads.
7492acc9 734
18af70d0
CY
735** Image mode
736
05f77e38
GM
737+++
738*** RET (`image-toggle-animation') toggles animation, if applicable.
739Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 740
041d709f 741** Info
723ee192 742
041d709f
CY
743*** New command `info-display-manual' displays an Info manual
744specified by its name. If that manual is already visited in some Info
745buffer within the current session, the command will display that
746buffer. Otherwise, it will load the manual and display it. This is
747handy if you have many manuals in many Info buffers, and don't
748remember the name of the buffer visiting the manual you want to
749consult.
691cf4a0 750
88c5c7c8 751+++
24ea72d3
EZ
752*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
753This is for compatibility with the stand-alone Info reader program,
754and also because `Info-edit' is a rarely used command that is disabled
755by default.
756
757+++
06b08b88 758** MH-E has been upgraded to MH-E version 8.3.1.
041d709f 759See MH-E-NEWS for details.
37221432 760
ff1796f3 761---
041d709f 762** Modula-2 mode provides auto-indentation.
37221432 763
ff1796f3 764---
041d709f 765** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 766
ff1796f3 767---
041d709f
CY
768** Prolog mode has been completely revamped, with lots of additional
769functionality such as more intelligent indentation, electricity, support for
770more variants, including Mercury, and a lot more.
771
772** Rmail
773
a7686350 774+++
041d709f
CY
775*** The command `rmail-epa-decrypt' decrypts OpenPGP data
776in the Rmail incoming message.
777
50419064
GM
778---
779*** The variable `rmail-message-filter' no longer has any effect.
780This change was made in Emacs 23.1 but was not advertised at the time.
781Try using `rmail-show-message-hook' instead.
782
717a1362 783** Shell mode
88c5c7c8 784+++
de0bde62 785*** Shell mode uses pcomplete rules, with the standard completion UI.
88c5c7c8 786+++
717a1362
CY
787*** The `shell' command prompts for the shell path name if the default
788directory is a remote file name and neither the environment variable
789$ESHELL nor the variable `explicit-shell-file-name' is set.
790
ddb54206 791---
34e8a2da 792** SQL mode
041d709f 793
34e8a2da
GM
794---
795*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
796and `sql-oracle-scan-on'.
041d709f 797
34e8a2da
GM
798---
799*** New custom variables control prompting for login parameters.
800Each supported product has a custom variable `sql-*-login-params',
801which is a list of the parameters to be prompted for before a
802connection is established.
041d709f 803
34e8a2da 804---
041d709f 805*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 806which causes it to prompt for an SQL product.
041d709f 807
34e8a2da
GM
808---
809*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
810These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
811given a prefix argument, prompt for a name for the SQL interactive
812buffer. This reduces the need for calling `sql-rename-buffer'.
813
34e8a2da 814---
041d709f
CY
815*** SQL interactive modes suppress command continuation prompts, and
816replace tabs with spaces. The first change impacts multiple line SQL
817statements entered with C-j between each line, statements yanked into
818the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
819second prevents the MySQL and Postgres interpreters from listing
820object name completions when sent text via `sql-send-*' functions.
041d709f 821
34e8a2da 822---
041d709f
CY
823*** New command `sql-connect' starts a predefined SQLi session,
824using the login parameters from `sql-connection-alist'.
825
34e8a2da 826---
041d709f
CY
827*** New "Save Connection" menu item in SQLi buffers.
828This gathers the login params specified for the SQLi session, if it
829was not started by a connection, and saves them as a new connection.
830
34e8a2da
GM
831---
832*** New commands for listing database objects and details:
833sql-list-all and sql-list-table.
041d709f 834
34e8a2da 835---
041d709f
CY
836*** An API for manipulating SQL product definitions has been added.
837
838** TeX modes
839
e74e58c9 840+++
041d709f 841*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 842
459bba37 843** Tramp
bfd779dd 844---
a808d31f 845*** There exists a new inline access method "ksu" (kerberized su).
bfd779dd 846---
459bba37 847*** The following access methods are discontinued: "ssh1_old",
ea843702 848"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
bfd779dd 849---
58f74fe4
MA
850*** The option `ange-ftp-binary-file-name-regexp' has changed its
851default value to "".
852
041d709f
CY
853** `url-queue-retrieve' downloads web pages asynchronously, but allow
854controlling the degree of parallelism.
177549d0 855
0c32ce32
CY
856** VC and related modes
857
2edef1a0 858+++
0c32ce32 859*** Support for pulling on distributed version control systems.
2edef1a0
CY
860`C-x v +' (`vc-pull') runs a "pull" operation, if it is supported, to
861update the current branch and working tree. A prefix argument means
862to prompt the user for specifics, e.g. a pull location.
0c32ce32 863
7d93eca9 864**** `vc-update' is now an alias for `vc-pull'.
0c32ce32 865
659114fd 866**** Currently supported by Bzr, Git, and Mercurial.
0c32ce32 867
2edef1a0 868+++
0c32ce32 869*** Support for merging on distributed version control systems.
2edef1a0
CY
870The vc-merge command now runs a "merge" operation, if it is supported,
871to merge changes from another branch into the current one. It prompts
872for specifics, e.g. a merge source.
0c32ce32 873
33f6cf7b 874**** Currently supported for Bzr, Git, and Mercurial.
0c32ce32 875
bc859d5f 876+++
2afef60a 877*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 878shows a diff while querying the user. It defaults to t.
2afef60a 879
9cff91f8 880+++
d4eb88c7
CY
881*** Log entries in some Log View buffers can be toggled to display a
882longer description by typing RET (log-view-toggle-entry-display).
883In the Log View buffers made by `C-x v L' (vc-print-root-log), you can
884use this to display the full log entry for the revision at point.
885
33f6cf7b 886**** Currently supported for Bzr, Git, and Mercurial.
d4eb88c7
CY
887
888**** Packages using Log View mode can enable this functionality by
889binding `log-view-expanded-log-entry-function' to a suitable function.
890
9cff91f8 891+++
1c6c854e
CS
892*** New command `vc-ediff' allows visual comparison of two revisions
893of a file similar to `vc-diff', but using ediff backend.
894
80c6d77f 895+++
86c60681
CY
896*** The option `vc-initial-comment' was removed in Emacs 23.2, but
897this was not advertised at the time.
898
899+++
900*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
901Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
902this was not advertised at the time.
903
041d709f
CY
904** Obsolete modes
905
23d70505
GM
906---
907*** abbrevlist.el
908
f8ca9162
GM
909---
910*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
911
912*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
913You can get a comparable behavior with:
914(setq completion-styles '(partial-completion initials))
915(setq completion-pcm-complete-word-inserts-delimiters t)
916
23d70505
GM
917---
918*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
919
920*** pgg is obsolete (use EasyPG instead)
041d709f 921
23d70505 922---
041d709f
CY
923*** sregex.el is obsolete, since rx.el is a strict superset.
924
23d70505
GM
925---
926*** s-region.el and pc-select.el are obsolete.
927They are superseded by shift-select-mode, enabled by default since 23.1.
928
929+++
930*** vc-mcvs.el is obsolete (for lack of a maintainer)
ca5eed61 931
0fe719e6
GM
932** Miscellaneous
933
05f77e38
GM
934+++
935*** The Landmark game is now invoked with `landmark', not `lm'.
936
937---
938*** In `ido-file-completion-map', C-v is no longer bound to ido-toggle-vc.
939(This interfered with cua-mode.)
940
9f678528
GM
941+++
942*** f90.el has some support for Fortran 2008 syntax.
943
0fe719e6
GM
944---
945*** `copyright-fix-years' can optionally convert consecutive years to ranges.
946
88c5c7c8 947+++
5b3e6db8
GM
948*** New command `nato-region' converts text to NATO phonetic alphabet.
949
eb199145
GM
950\f
951* New Modes and Packages in Emacs 24.1
d445b3f8 952
5abc31ef 953+++
60e56523 954** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 955original buffers. It is bound to "e" in Occur mode.
60e56523 956
a075a2c5
GM
957** New global minor mode electric-pair-mode.
958When enabled, typing an open parenthesis automatically inserts the
959matching closing one.
960
961** New global minor mode electric-indent-mode.
962When enabled, typing certain characters triggers reindentation.
963
964** New global minor mode electric-layout-mode.
965When enabled, typing certain characters automatically inserts newlines.
3b843809 966
a83ec3c9
CY
967** tabulated-list.el provides a generic major mode for tabulated data,
968from which other modes can be derived.
969
d02c9bcd
SM
970** pcase.el provides the ML-style pattern matching macro `pcase'.
971
7725ebb7
MA
972** secrets.el is an implementation of the Secret Service API, an
973interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
974Secret Service API requires D-Bus for communication. The command
975`secrets-show-secrets' offers a buffer with a visualization of the
976secrets.
7725ebb7 977
f9e78150
MA
978** notifications.el provides an implementation of the Desktop
979Notifications API. It requires D-Bus for communication.
980
12fe5bcc
MA
981** soap-client.el supports access to SOAP web services from Emacs.
982soap-inspect.el is an interactive inspector for SOAP WSDL structures.
983
ff1796f3
GM
984---
985** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 986
cefee440 987---
53bbe3ad 988** New emacs-lock.el package.
cefee440
GM
989(The previous version has been moved to obsolete/old-emacs-lock.el.)
990Now, there is a proper minor mode `emacs-lock-mode'.
991Protection against exiting Emacs and killing the buffer can be set
992separately. The mechanism for automatically turning off protection
993for buffers with dead inferior processes has been generalized.
53bbe3ad 994
eb199145
GM
995\f
996* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 997
fa6996bc
EZ
998---
999** `char-direction-table' and the associated function `char-direction'
1000were deleted. They were buggy and inferior to the new support of
1001bidirectional editing introduced in Emacs 24. If you need the
1002bidirectional properties of a character, use `get-char-code-property'
1003with the last argument `bidi-class'.
1004
a6326082 1005+++
470d996d
TV
1006** `copy-directory' now copies the source directory as a subdirectory
1007of the target directory, if the latter is an existing directory. The
1008new optional arg COPY-CONTENTS, if non-nil, makes the function copy
1009the contents directly into a pre-existing target directory.
1010
25ca2e61
CY
1011** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
1012passes it to the mail user agent function. This argument specifies an
1013action for returning to the caller after finishing with the mail.
1014This is currently used by Rmail to delete a mail window.
1015
9173a8fb
CY
1016** For mouse click input events in the text area, the Y pixel
1017coordinate in the POSITION list now counts from the top of the text
1018area, excluding any header line. Previously, it counted from the top
1019of the header line.
1020
2b18055e
GM
1021---
1022** Support for "old-style" backquotes, which have been obsolete for
1023more than 10 years, has been further reduced. Now a backquote not
1024followed by a space is always treated as a "new-style" backquote.
1025Please consider completely removing all "old-style" backquotes from
1026your code as a matter of some urgency. If your code uses backquotes
1027as documented in the Elisp manual, and compiles without warning, then
1028you have nothing to do in this regard. Code not following the
1029appropriate conventions may fail to compile. The most common cause of
1030trouble seems to be an old-style backquote followed by a newline.
288cf4e9 1031
c31b4ce3 1032---
aab25355
GM
1033** view-buffer now treats special mode-class in the same way that
1034view-file has since Emacs 22 (ie, it won't enable View mode if the
1035major-mode is special).
fd5c9dfa 1036
e1ac4066 1037+++
60d47423
GM
1038** Passing a nil argument to a minor mode defined by define-minor-mode
1039now turns the mode ON unconditionally. This is so that you can write, e.g.
1040 (add-hook 'text-mode-hook 'foo-minor-mode)
1041to enable foo-minor-mode in Text mode buffers, thus removing the need
1042for `turn-on-foo-minor-mode' style functions.
6431f2e6 1043
ddb54206 1044+++
6431f2e6 1045** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
1046and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
1047With these alist entries omitted, `make-frame' checks the value of the
1048variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
1049a menu-bar or tool-bar, respectively. If the alist entries are added,
1050they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 1051
50b063c3 1052+++
fe0aa820
CY
1053** Regions created by mouse dragging are now normal active regions,
1054similar to the ones created by shift-selection. In previous Emacs
1055versions, these regions were delineated by `mouse-drag-overlay', which
1056has now been removed.
d6d8ee7a 1057
34c99998
GM
1058+++
1059** The fourth argument of filter-buffer-substring, which says to remove
1060text properties from the final result, has been removed.
1061Eg simply pass the result through substring-no-properties if you need this.
1062
334023be 1063---
4583e796
GM
1064** cl.el no longer provides `cl-19'.
1065
be890cb8
SM
1066** The menu bar bindings's caches are not used any more.
1067Use (where-is-internal <def> nil t) instead.
1068
3a970881
GM
1069+++
1070** The following obsolete (mostly since at least 21.1) functions and aliases
1071have been removed (the appropriate new function is given in parentheses):
1072comint-kill-output (comint-delete-output),
1073decompose-composite-char (char-to-string),
1074outline-visible (outline-invisible-p),
1075internal-find-face (facep), internal-get-face (facep and check-face),
1076frame-update-faces (not needed),
1077frame-update-face-colors (frame-set-background-mode),
1078x-frob-font-weight and x-frob-font-slant (appropriate make-face-* function),
1079x-make-font-bold and x-make-font-demibold (make-face-bold),
1080x-make-font-italic and x-make-font-oblique (make-face-italic),
1081x-make-font-bold-italic (make-face-bold-italic),
1082x-make-font-unbold (make-face-unbold),
1083x-make-font-unitalic (make-face-unitalic),
1084mldrag-drag-mode-line (mouse-drag-mode-line),
1085mldrag-drag-vertical-line (mouse-drag-vertical-line),
1086iswitchb-default-keybindings (iswitchb-mode), char-bytes (== 1),
1087isearch-return-char (isearch-printing-char), make-local-hook (not needed)
1088
1089+++
1090** The following obsolete (mostly since at least 21.1) variables and varaliases
1091have been removed (the appropriate new variable is given in parentheses):
1092checkdoc-minor-keymap (checkdoc-minor-mode-map),
1093vc-header-alist (vc-BACKEND-header), directory-sep-char (== ?/)
1094font-lock-defaults-alist (font-lock-defaults), and e (float-e).
3226d6ca 1095
334023be 1096---
041d709f 1097** The following obsolete files were removed:
7b0e3048
GM
1098sc.el, x-menu.el, rnews.el, rnewspost.el
1099
33658d4e
CY
1100** FIXME finder-inf.el changes.
1101
eb199145
GM
1102\f
1103* Lisp changes in Emacs 24.1
9097e8af 1104
735cc5ca 1105+++
041d709f
CY
1106** Code can now use lexical scoping by default instead of dynamic scoping.
1107The `lexical-binding' variable lets code use lexical scoping for local
48da7392
GM
1108variables. It is typically set via a file-local variable in the first
1109line of the file, in which case it applies to all the code in that file.
735cc5ca 1110+++
041d709f
CY
1111*** `eval' takes a new optional argument `lexical' to choose the new lexical
1112binding instead of the old dynamic binding mode.
735cc5ca 1113+++
041d709f
CY
1114*** Lexically scoped interpreted functions are represented with a new form
1115of function value which looks like (closure ENV ARGS &rest BODY).
1116
1117*** New macro `letrec' to define recursive local functions.
735cc5ca 1118+++
041d709f
CY
1119*** New function `special-variable-p' to check whether a variable is
1120declared as dynamically bound.
1121
d273439c 1122+++
041d709f
CY
1123** An Emacs Lisp testing tool is now included.
1124Emacs Lisp developers can use this tool to write automated tests for
1125their code. See the ERT info manual for details.
1126
1127** Changes for bidirectional display and editing
f1816485 1128
041d709f
CY
1129+++
1130*** New function `current-bidi-paragraph-direction'.
f1816485
EZ
1131This returns the actual value of base direction of the paragraph at
1132point.
041d709f
CY
1133
1134+++
1135*** New function `bidi-string-mark-left-to-right'.
f1816485
EZ
1136Given a string containing characters from right-to-left (RTL) scripts,
1137this function returns another string which can be safely inserted into
1138a buffer, such that any following text will be always displayed to the
1139right of that string. (This works by appending the Unicode
1140"LEFT-TO-RIGHT MARK" character when the argument string might need that.)
041d709f
CY
1141
1142This is useful when the buffer has overall left-to-right (LTR)
1143paragraph direction and you need to insert a string whose contents and
f1816485
EZ
1144directionality are not known in advance, without disrupting the layout
1145of the line.
041d709f 1146
bee0fcef 1147** Window changes
c4682d18
MR
1148+++
1149*** Window tree functions are accessible in Elisp.
1150Functions are provided to return the parent, siblings or child windows
1151of any window including internal windows (windows not associated with a
1152buffer) in the window tree.
291d142b 1153+++
24300f5f
CY
1154**** New function `window-valid-p' gives non-nil for live and internal
1155windows.
c4682d18 1156+++
24300f5f 1157**** Window manipulation can deal with internal windows.
c4682d18
MR
1158Many window handling functions like `split-window', `delete-window', or
1159`delete-other-windows' as well as the window resizing functions can now
1160act on any window including internal ones.
c4682d18
MR
1161+++
1162*** window-total-height/-width vs window-body-height/-width.
1163The function `window-height' has been renamed to `window-total-height'
1164and `window-width' has been renamed to `window-body-width'. The old
1165names are provided as aliases. Two new functions `window-total-width'
1166and `window-body-height' are provided.
c4682d18
MR
1167+++
1168*** Window parameters specific to window handling functions.
1169For each window you can specify a parameter to override the default
1170behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
1171and `delete-other-windows'. The variable `ignore-window-parameters'
1172allows to ignore processing such parameters.
c4682d18
MR
1173+++
1174*** New semantics of third argument of `split-window'.
c4682d18
MR
1175The third argument of `split-window' has been renamed to SIDE and can be
1176set to any of the values 'below, 'right, 'above, or 'left to make the
1177new window appear on the corresponding side of the window that shall be
1178split. Any other value of SIDE will cause `split-window' to split the
1179window into two side-by-side windows as before.
c4682d18
MR
1180+++
1181*** Window resizing functions.
487ffd7a 1182A new standard function for resizing windows called `window-resize' has
c4682d18
MR
1183been introduced. This and all other functions for resizing windows no
1184longer delete any windows when they become too small.
b3c0dbfd
MR
1185+++
1186*** Deleting the selected window now selects the most recently selected
1187live window on that frame instead.
c4682d18
MR
1188+++
1189*** `adjust-window-trailing-edge' adjustments.
1190`adjust-window-trailing-edge' can now deal with fixed-size windows and
1191is able to resize other windows if a window adjacent to the trailing
1192edge cannot be shrunk any more. This makes its behavior more similar to
1193that of Emacs 21 without compromising, however, its inability to delete
1194windows which was introduced in Emacs 22.
c4682d18
MR
1195+++
1196*** Window-local buffer lists.
1197Windows now have local buffer lists. This means that removing a buffer
1198from display in a window will preferably show the buffer previously
1199shown in that window with its previous window-start and window-point
1200positions. This also means that the same buffer may be automatically
1201shown twice even if it already appears in another window.
0e406a72 1202+++
bee0fcef
CY
1203*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
1204which if non-nil requires the buffer to be displayed in the currently
1205selected window, signaling an error otherwise. If nil, another window
1206can be used, e.g. if the selected one is strongly dedicated.
24300f5f 1207+++
0a2132ba 1208*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
1209to `split-window-below' and `split-window-right' respectively.
1210The old names are kept as aliases.
24300f5f 1211+++
0a2132ba
CY
1212*** Display actions
1213
1214**** The second arg to `display-buffer' and `pop-to-buffer' is now
1215named ACTION, and takes a display action of the same form as
1216`display-buffer-base-action' (see Changes, above). A non-nil,
1217non-list value is treated specially, as the old meaning.
1218
1219**** New variable `display-buffer-overriding-action'.
1220
1221**** The procedure of `display-buffer' etc. to choose a window is
1222determined by combining `display-buffer-overriding-action',
1223`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
1224and `display-buffer-fallback-action'. The second and fourth of these
1225are user-customizable variables.
1226
1227See the docstring of `display-buffer' for details.
bee0fcef 1228
ed6235ea
MR
1229+++
1230*** New behavior of `quit-window'.
1231The behavior of `quit-window' has been changed in order to restore the
1232state before the last buffer display operation in that window.
1233
d83dc65b
MR
1234+++
1235*** The new option `frame-auto-hide-function' lets you choose between
53964682 1236iconifying or deleting a frame when burying a buffer shown in a dedicated
d83dc65b
MR
1237frame or quitting a window showing a buffer in a frame of its own.
1238
20d2304d
CY
1239+++
1240*** New functions `window-state-get' and `window-state-put'.
1241These functions allow to save and restore the state of an arbitrary
1242frame or window as an Elisp object.
1243
a2a25d24 1244** Completion
041d709f 1245
a2a25d24
SM
1246*** New variable completion-extra-properties used to specify extra properties
1247of the current completion:
1248- :annotate-function, same as the old completion-annotate-function.
1249- :exit-function, function to call after completion took place.
1250
1251*** Functions on completion-at-point-functions can return any of the properties
1252valid for completion-extra-properties.
1253
1254*** completion-annotate-function is obsolete.
1255
620c53a6
SM
1256*** New `metadata' method for completion tables. The metadata thus returned
1257can specify various details of the data returned by `all-completions':
1258- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
1259 used to select a style in completion-category-overrides.
1260- `annotation-function' to add annotations in *Completions*.
1261- `display-sort-function' to specify how to sort entries in *Completions*.
1262- `cycle-sort-function' to specify how to sort entries when cycling.
1263
de09aa52
CY
1264*** minibuffer-local-filename-must-match-map is not used any more.
1265Instead, the bindings in minibuffer-local-filename-completion-map are
1266combined with minibuffer-local-must-match-map.
1267
1268*** New variable `completing-read-function' allows overriding the
1269behavior of `completing-read'.
1270
d366bd53 1271+++
f042970d 1272** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
1273text terminal display, via a char-table entry that is a cons cell.
1274
da91b5f2
CY
1275** `open-network-stream' can now be used to open an encrypted stream.
1276It now accepts an optional `:type' parameter for initiating a TLS
1277connection, directly or via STARTTLS. To do STARTTLS, additional
1278parameters (`:end-of-command', `:success', `:capabilities-command')
1279must also be supplied.
1280
ddb54206 1281+++
f6d62986
SM
1282** pre/post-command-hook are not reset to nil upon error.
1283Instead, the offending function is removed.
1284
b1f6fa26
CY
1285** New hook types
1286
e7bc51d0 1287+++
b1f6fa26
CY
1288*** New function `run-hook-wrapped' for running an abnormal hook by
1289passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 1290Like `run-hook-with-args-until-success', it stops at the first
5385447f 1291non-nil return value.
e7bc51d0 1292
b1f6fa26
CY
1293+++
1294*** New macro `with-wrapper-hook' for running an abnormal hook as a
1295set of "wrapping" filters, similar to around advice.
54521c99
GM
1296(A version of this macro was actually added in Emacs 23.2 but was not
1297advertised at the time.)
f6d62986 1298
866c1d22
GM
1299+++
1300** The macros `condition-case-no-debug' and `with-demoted-errors' were
1301added in Emacs 23.1, but not advertised.
d6b1d521 1302
953cebf5
GM
1303+++
1304** The new function `server-eval-at' allows evaluation of Lisp forms on
1305named Emacs server instances, using TCP sockets.
7deebf1b 1306
1b9f60cc
GM
1307+++
1308** `call-process' and `call-process-region' allow a `(:file "file")' spec
1309to redirect STDOUT to a file.
7deebf1b 1310
04e2ce72
CY
1311---
1312** Variable `stack-trace-on-error' removed.
e7f7fbaa
SM
1313Also the debugger can now "continue" from an error, which means it will jump
1314to the error handler as if the debugger had not been invoked instead of
1315jumping all the way to the top-level.
1316
da97a9e6
CY
1317+++
1318** The function format-time-string now supports the %N directive, for
1319higher-resolution time stamps.
1320
7e2734bc 1321+++
3ef01959
CY
1322** New function `read-char-choice' reads a restricted set of characters,
1323discarding any inputs not inside the set.
1324
4dee2dea 1325+++
2e288d54
JB
1326** `image-library-alist' is renamed to `dynamic-library-alist'.
1327The variable is now used to load all kind of supported dynamic libraries,
1328not just image libraries. The previous name is still available as an
1329obsolete alias.
1330
04e2ce72
CY
1331** New variable `syntax-propertize-function'.
1332This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
1333This allows syntax-table properties to be set independently from font-lock:
1334just call syntax-propertize to make sure the text is propertized.
1335Together with this new variable come a new hook
1336syntax-propertize-extend-region-functions, as well as two helper functions:
1337syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
1338as-is; and syntax-propertize-rules which provides a new way to specify
1339syntactic rules.
1340
f58b9822 1341+++
a2e5caf7
SM
1342** New hook post-self-insert-hook run at the end of self-insert-command.
1343
7cf78aac 1344+++
c5683ceb 1345** Syntax tables support a new "comment style c" additionally to style b.
041d709f 1346
4dee2dea 1347---
4e2db1fe 1348** frame-local variables cannot be let-bound any more.
041d709f 1349
15de15c6 1350** Major and minor mode changes
3fd50d5c 1351+++
15de15c6
CY
1352*** `prog-mode' is a new major mode from which programming modes
1353should be derived.
041d709f 1354
c2f03a4a 1355+++
15de15c6
CY
1356**** `prog-mode-hook' can be used to enable features for programming
1357modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
1358on-the-fly spell checking for comments and strings.
1359
12f381b7 1360+++
15de15c6
CY
1361*** New hook `change-major-mode-after-body-hook', run by
1362`run-mode-hooks' just before any other mode hooks.
1363
c7301fe4 1364+++
7a9a2fc6
GM
1365*** Enabled globalized minor modes can be disabled in specific major modes.
1366If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
1367major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
15de15c6 1368
56afad3a 1369+++
15de15c6 1370*** `define-minor-mode' accepts a new keyword :variable.
f44379e7 1371
04e2ce72 1372+++
b2957ea8 1373** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
1374Trashing is performed if TRASH and `delete-by-moving-to-trash' are
1375both non-nil. Interactively, TRASH defaults to t, unless a prefix
1376argument is supplied (see Trash changes, above).
53967e09 1377
94bc7984 1378---
9317e499 1379** `facemenu-read-color' is now an alias for `read-color'.
94bc7984
GM
1380
1381+++
1382** The command `read-color' now requires a match for a color name
1383or RGB triplet, instead of signaling an error if the user provides
1384invalid input.
9317e499 1385
f7c9199f 1386+++
4039c786
CY
1387** Tool-bars can display separators.
1388Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 1389i.e. via menu entries of the form `(menu-item "--")'.
9317e499 1390
00fe2df1
JL
1391** Image API
1392
eea14f31 1393+++
18af70d0
CY
1394*** Animated images support (currently animated gifs only).
1395
eea14f31 1396+++
18af70d0
CY
1397**** `image-animated-p' returns non-nil if an image can be animated.
1398
eea14f31 1399+++
18af70d0
CY
1400**** `image-animate' animates a supplied image spec.
1401
eea14f31 1402+++
18af70d0
CY
1403**** `image-animate-timer' returns the timer object for an image that
1404is being animated.
00fe2df1 1405
7cb76fe0
GM
1406---
1407*** `image-extension-data' has been renamed to `image-metadata'.
1408The old name is an obsolete alias to the new one.
1546c559 1409
bba26374 1410+++
b4ac6e8c
GM
1411*** Image mode can view any image type that ImageMagick supports.
1412This requires Emacs to be built with ImageMagick support.
31fd3586
GM
1413Then the function `imagemagick-types' returns a list of image file
1414extensions that your installation of ImageMagick supports. The
041d709f
CY
1415function `imagemagick-register-types' enables ImageMagick support for
1416these image types, minus those listed in `imagemagick-types-inhibit'.
bba26374 1417Visiting one of these file types will then use Image mode.
041d709f 1418
b4ac6e8c
GM
1419---
1420*** New commands to resize and rotate images in Image mode.
1421These require Emacs to be built with ImageMagick support.
1422image-transform-fit-to-height, image-transform-fit-to-width,
1423image-transform-set-rotation, image-transform-set-scale.
1424
71c17aec 1425** XML and HTML parsing
043efd56
GM
1426If Emacs is compiled with libxml2 support, there are two new functions:
1427`libxml-parse-html-region' (which parses "real world" HTML) and
1428`libxml-parse-xml-region' (which parses XML). Both return an Emacs
1429Lisp parse tree.
4b9832a6
CY
1430
1431FIXME: These should be front-ended by xml.el.
1432
e2574f2c
TZ
1433** GnuTLS
1434
31fd3586 1435*** New library `gnutls.el'.
573559b4 1436This requires Emacs to have been built with GnuTLS support.
31fd3586
GM
1437The main functions are `open-gnutls-stream' and `gnutls-negotiate'.
1438It's easiest to use these functions through `open-network-stream'
1439because it can upgrade connections through STARTTLS opportunistically
1440or use plain SSL, depending on your needs. For debugging, set
1441`gnutls-log-level' greater than 0.
71c17aec 1442
a6020335
MH
1443** Isearch
1444
7cb76fe0 1445---
a6020335
MH
1446*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
1447
ddb54206 1448+++
9326ba26
CY
1449** Progress reporters can now "spin".
1450The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
1451now be nil, or omitted. This makes a "non-numeric" reporter. Each
1452time you call `progress-reporter-update' on that progress reporter,
1453with a nil or omitted VALUE argument, the reporter message is
1454displayed with a "spinning bar".
1455
8f05da42 1456+++
3e214b50
JB
1457** New variable `revert-buffer-in-progress-p' is true while a buffer is
1458being reverted, even if the buffer has a local `revert-buffer-function'.
1459
638f053a
JB
1460** New variables `delayed-warnings-list' and `delayed-warnings-hook' allow
1461deferring warnings until the main command loop is executed.
1462
e145f188
GM
1463+++
1464** `set-auto-mode' now respects mode: local variables at the end of files,
1465as well as those in the -*- line.
1466
6420d28b
CY
1467---
1468** rx.el has a new `group-n' construct for explicitly numbered groups.
1469
dac86404
GM
1470+++
1471** New function `make-composed-keymap' that constructs a new keymap
1472from multiple input maps. You can use this to make a keymap that
1473inherits from multiple maps, eg:
1474 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 1475
7aa5aad8
GM
1476+++
1477** Set `debug-on-event' to make Emacs enter the debugger e.g. on receipt
1478of SIGUSR1. This can be useful when `inhibit-quit' is set.
12ca40ec 1479
ddb54206 1480+++
27f7ef2f 1481** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
1482This means that the empty symbol can now be read back. Also, #: by itself
1483(when not immediately followed by a possible symbol character) stands for
1484an empty uninterned symbol.
041d709f 1485
fead402d
CY
1486+++
1487** New math functions `isnan', `copysign', `frexp', `ldexp'.
1488
041d709f
CY
1489** Obsolete functions and variables
1490
05f77e38
GM
1491---
1492*** `tooltip-use-echo-area' is obsolete.
1493Rather than setting this to t, disable Tooltip mode instead.
1494
34c99998 1495+++
041d709f
CY
1496*** buffer-substring-filters is obsolete.
1497Use `filter-buffer-substring-functions' instead.
1498
7cb76fe0 1499---
041d709f
CY
1500*** `byte-compile-disable-print-circle' is obsolete.
1501
f160676e 1502---
041d709f 1503*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
1504Use `post-command-hook' instead.
1505
d366bd53 1506+++
67e729a5
CY
1507*** `font-lock-maximum-size' is obsolete.
1508
eb199145
GM
1509\f
1510* Changes in Emacs 24.1 on non-free operating systems
d53a60a6 1511
a2f0118c 1512---
7a22e700 1513** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
1514and also when HOME is set to C:\ by default.
1515
7a22e700 1516** New configure.bat options
04779484 1517
a0d363f4 1518+++
7a22e700 1519*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 1520
a0d363f4 1521+++
7a22e700 1522*** --distfiles specifies files to be included in binary distribution.
e2574f2c 1523
a0d363f4 1524+++
7a22e700
OK
1525*** --without-gnutls disables automatic GnuTLS detection.
1526
a0d363f4
GM
1527+++
1528*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 1529
a0d363f4 1530+++
0a19a6f8 1531** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 1532
1f5e1a16
GM
1533---
1534** The Lisp function `w32-default-color-map' is now obsolete.
1535(It is only used internally in the Emacs C code.)
5430d399 1536
1f5e1a16
GM
1537+++
1538** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
1539reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 1540
05197f40 1541\f
a933dad1 1542----------------------------------------------------------------------
5b87ad55 1543This file is part of GNU Emacs.
a933dad1 1544
ab73e885 1545GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 1546it under the terms of the GNU General Public License as published by
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1547the Free Software Foundation, either version 3 of the License, or
1548(at your option) any later version.
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1549
1550GNU Emacs is distributed in the hope that it will be useful,
1551but WITHOUT ANY WARRANTY; without even the implied warranty of
1552MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1553GNU General Public License for more details.
a933dad1 1554
5b87ad55 1555You should have received a copy of the GNU General Public License
ab73e885 1556along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 1557
05197f40 1558\f
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1559Local variables:
1560mode: outline
1561paragraph-separate: "[ \f]*$"
1562end: