Update Compilation and Advice chapters in Lisp manual.
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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
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136---
137*** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
138passes it to the mail user agent function. This argument specifies an
139action for returning to the caller after finishing with the mail.
140For example, this is used by Rmail to optionally delete a mail window.
141
142*** smtpmail
95f41d9a 143
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144**** smtpmail now uses encrypted connections (via STARTTLS) if the
145mail server supports them. It also uses the auth-source framework for
146getting credentials.
95f41d9a 147
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148**** The variable `smtpmail-auth-credentials' has been removed.
149That variable used to have the default value "~/.authinfo", in which
150case you won't see any difference. But if you changed it to be a list
151of user names and passwords, that setting is now ignored; you will be
152prompted for the user name and the password, which will then be saved
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153to ~/.authinfo. (To control where and how the credentials are stored,
154see the auth-source manual. You may want to change the auth-source
155preferences if you want to store the credentials encrypted, for
156instance.)
e2430e31 157
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158You can also manually copy the credentials to your ~/.authinfo file.
159For example, if you had
e2430e31 160
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161 (setq smtpmail-auth-credentials
162 '(("mail.example.org" 25 "jim" "s!cret")))
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163
164then the equivalent line in ~/.authinfo would be
165
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166 machine mail.example.org port 25 login jim password s!cret
167
168**** The variable `smtpmail-starttls-credentials' has been removed.
95f41d9a 169
cd1181db 170If you had that set, then you need to put
95f41d9a 171
041d709f 172 machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
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173
174in your ~/.authinfo file instead.
175
b30941db 176*** Mail mode changes (this is the old Mail mode, not Message mode)
c3760c17 177+++
b30941db 178**** New command `mail-add-attachment' for adding MIME attachments
c3760c17 179---
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180**** The command `mail-attach-file' was renamed to `mail-insert-file'.
181The old name is now an obsolete alias to the new name.
c3760c17 182
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183+++
184*** You can type C-c m from M-x report-emacs-bug if you prefer, and if
185your system supports it, to transfer your report to your desktop's
186preferred mail client. This uses either the "xdg-email" utility, or
187OS X's "open" command.
3f88cd72 188
041d709f 189** Emacs server and client changes
ddb54206 190+++
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191*** New option `server-port' specifies the port on which the Emacs
192server should listen.
193+++
194*** New emacsclient argument -q/--quiet suppresses some status messages.
195+++
196*** New emacsclient argument --frame-parameters can be used to set the
197frame parameters of a newly-created graphical frame.
198+++
8350f087 199*** If emacsclient shuts down as a result of Emacs signaling an
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200error, its exit status is 1.
201+++
202*** New emacsclient argument --parent-id ID.
203This opens a client frame in parent X window ID, via XEmbed, similar
204to the --parent-id argument to Emacs.
205
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206** Internationalization changes
207
f4b6ba46 208+++
d0ce9f8c 209*** Emacs now supports display and editing of bidirectional text.
f4b6ba46 210
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211Text that includes characters from right-to-left (RTL) scripts, such
212as Arabic, Farsi, or Hebrew, is displayed in the correct visual order
213as expected by users of those scripts. This display reordering is a
214"Full bidirectionality" class implementation of the Unicode
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215Bidirectional Algorithm. Buffers with no RTL text should look exactly
216the same as before.
f4b6ba46 217
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218For more information, see the node "Bidirectional Editing" in the
219Emacs Manual.
f4b6ba46 220
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221+++
222**** New buffer-local variable `bidi-display-reordering'.
223To disable display reordering in any given buffer, change this to nil.
d20e1419 224
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225+++
226**** New buffer-local variable `bidi-paragraph-direction'.
227If nil (the default), Emacs determines the base direction of each
228paragraph from its text, as specified by the Unicode Bidirectional
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229Algorithm.
230
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231Setting this to `right-to-left' or `left-to-right' forces a particular
232base direction on each paragraph in the buffer.
233
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234Paragraphs whose base direction is right-to-left are displayed
235starting at the right margin of the window.
236
d0ce9f8c 237+++
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238*** Enhanced support for characters with no glyphs in available fonts.
239If a character has no glyphs in any of the available fonts, Emacs
240normally displays it either as a hexadecimal code in a box or as a
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241thin 1-pixel space. In addition to these two methods, Emacs can
242display these characters as empty box, as an acronym, or not display
243them at all. To change how these characters are displayed, customize
244the variable `glyphless-char-display-control'.
245
041d709f 246On character terminals, these methods are used for characters that
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247cannot be encoded by the `terminal-coding-system'.
248
ddb54206 249---
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250*** New input methods for Farsi: farsi and farsi-translit.
251
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252+++
253*** `nobreak-char-display' now also highlights Unicode hyphen chars
254(U+2010 and U+2011).
255
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256---
257*** New translation of the Emacs Tutorial in Hebrew is available.
258Type `C-u C-h t' to choose it in case your language setup doesn't
259automatically select it.
260
041d709f 261** Improved GTK integration
da97a9e6 262+++
041d709f 263*** GTK scroll-bars are now placed on the right by default.
52834b6b 264Use `set-scroll-bar-mode' to change this.
da97a9e6 265+++
041d709f 266*** GTK tool bars can have just text, just images or images and text.
d8004abe 267Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
20fe03ad 268is taken from the desktop settings.
da97a9e6 269---
041d709f 270*** GTK tool bars can be placed on the left/right or top/bottom of the frame.
8b2dd508 271The frame-parameter tool-bar-position controls this. It takes the values
1c0d77cc 272top, left, right or bottom. The Options => Show/Hide menu has entries
8b2dd508 273for this.
d366bd53 274+++
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275*** The colors for selected text (the `region' face) are taken from
276the GTK theme when Emacs is built with GTK.
d366bd53 277+++
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278*** Emacs uses GTK tooltips by default if built with GTK. You can turn that
279off by customizing x-gtk-use-system-tooltips.
16a91140 280
35137ed3 281+++
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282** New basic faces `error', `warning', `success' are available to
283highlight strings that indicate failure, caution or successful operation.
284
b22b1918 285---
1ecb2d3f 286** Lucid menus and dialogs can display antialiased fonts if Emacs is built
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287with Xft. To change font, use the X resource font, for example:
288Emacs.pane.menubar.font: Courier-12
99852628 289
21100e7d 290+++
917794d5 291** On graphical displays, the mode-line no longer ends in dashes.
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292Also, the first dash (which does not indicate anything) is just
293displayed as a space.
917794d5 294
a49ca6b9 295+++
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296** Basic SELinux support has been added.
297This requires Emacs to be linked with libselinux at build time.
298
a49ca6b9 299+++
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300*** Emacs preserves the SELinux file context when backing up, and
301optionally when copying files. To this end, copy-file has an extra
302optional argument, and backup-buffer and friends include the SELinux
303context in their return values.
b7d65a5f 304
a49ca6b9 305+++
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306*** The new functions file-selinux-context and set-file-selinux-context
307get and set the SELinux context of a file.
a5bee597 308
041d709f 309** Changes for exiting Emacs
ddb54206 310+++
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311*** The function kill-emacs is now run upon receipt of the signals
312SIGTERM and SIGHUP, and upon SIGINT in batch mode.
ddb54206 313+++
041d709f 314*** kill-emacs-hook is now also run in batch mode.
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315If you have code that adds something to kill-emacs-hook, you should
316consider if it is still appropriate to add it in the noninteractive case.
9c524fcb 317
041d709f 318** Scrolling changes
550f41cd 319+++
041d709f 320*** New scrolling commands `scroll-up-command' and `scroll-down-command'
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321(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
322of buffer at first key-press (instead move to top/bottom of buffer)
550f41cd 323when `scroll-error-top-bottom' is non-nil.
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324+++
325*** New variable `scroll-error-top-bottom' (see above).
e7a3ff06 326+++
041d709f 327*** New scrolling commands `scroll-up-line' and `scroll-down-line'
5a97d2da 328scroll a line instead of full screen.
550f41cd 329+++
041d709f 330*** New property `scroll-command' should be set on a command's symbol to
b2957ea8 331define it as a scroll command affected by `scroll-preserve-screen-position'.
d0f69533 332+++
041d709f 333*** If you customize `scroll-conservatively' to a value greater than 100,
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334Emacs will never recenter point in the window when it scrolls due to
335cursor motion commands or commands that move point (e.f., `M-g M-g').
336Previously, you needed to use `most-positive-fixnum' as the value of
337`scroll-conservatively' to achieve the same effect.
d0f69533 338---
041d709f 339*** ``Aggressive'' scrolling now honors the scroll margins.
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340If you customize `scroll-up-aggressively' or
341`scroll-down-aggressively' and move point off the window, Emacs now
342scrolls the window so as to avoid positioning point inside the scroll
343margin.
344
f1a5d776 345** Trash changes
04e2ce72 346+++
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347*** `delete-by-moving-to-trash' now only affects commands that specify
348trashing. This avoids inadvertently trashing temporary files.
04e2ce72 349+++
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350*** Calling `delete-file' or `delete-directory' with a prefix argument
351now forces true deletion, regardless of `delete-by-moving-to-trash'.
352
05f77e38 353+++
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354** New option `list-colors-sort' defines the color sort order
355for `list-colors-display'.
356
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357** An Emacs Lisp package manager is now included.
358This is a convenient way to download and install additional packages,
3fd50d5c 359from a package repository at http://elpa.gnu.org.
d43f5a42 360+++
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361*** `M-x list-packages' shows a list of packages, which can be
362selected for installation.
d43f5a42 363+++
cb6c4991 364*** New command `describe-package', bound to `C-h P'.
d43f5a42 365+++
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366*** By default, all installed packages are loaded and activated
367automatically when Emacs starts up. To disable this, set
368`package-enable-at-startup' to nil. To change which packages are
369loaded, customize `package-load-list'.
370
f065864f 371** Custom Themes
b0d7d8af 372+++
f065864f 373*** `M-x customize-themes' lists Custom themes which can be enabled.
b0d7d8af 374+++
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375*** New option `custom-theme-load-path' is the load path for themes.
376Emacs no longer looks for custom themes in `load-path'. The default
377is to search in `custom-theme-directory', followed by a built-in theme
378directory named "themes/" in `data-directory'.
b0d7d8af 379+++
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380*** New option `custom-safe-themes' records known-safe theme files.
381If a theme is not in this list, Emacs queries before loading it, and
382offers to save the theme to `custom-safe-themes' automatically. By
383default, all themes included in Emacs are treated as safe.
278f6845 384
041d709f 385** File- and directory-local variable changes
b8f82dc1 386+++
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387*** You can stop directory local vars from applying to subdirectories.
388Add an element (subdirs . nil) to the alist portion of any variables
389settings to indicate that the section should not apply to
390subdirectories.
89bd9ccd 391+++
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392*** Directory local variables can apply to some file-less buffers.
393Affected modes include dired, vc-dir, and log-edit. For example,
394adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
395turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
396`hack-dir-local-variables-non-file-buffer' to support this.
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397+++
398*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
399Instead, use "eval: (minor-mode 1)".
c136e5cd 400
61086eb6 401+++
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402*** The variable `inhibit-first-line-modes-regexps' has been renamed
403to `inhibit-local-variables-regexps'. As the name suggests, it now
404applies to ALL file local variables, not just -*- mode ones.
405The associated `inhibit-first-line-modes-suffixes' has been renamed
406in the corresponding way.
407
fdeb32ec 408+++
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409** The variable `focus-follows-mouse' now always defaults to nil.
410
5f5e4ea1 411+++
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412** New primitive `secure-hash' that supports many secure hash algorithms:
413md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
414sha1.el has been removed. The `sha1' feature is provided by default.
42d4bcc8 415
5d907d6c 416** Menu-bar changes
b22b1918 417---
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418*** `menu-bar-select-buffer-function' lets you choose another operation
419instead of `switch-to-buffer' when selecting an item in the Buffers menu.
420
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421** Window changes
422
423+++
424*** Resizing an Emacs frame now preserves proportional window sizes,
425modulo restrictions like window minimum sizes and fixed-size windows.
426
427*** The behavior of `display-buffer' is now customizable in detail.
717a1362 428+++
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429**** New option `display-buffer-base-action' specifies a list of
430user-determined display "actions" (functions and optional arguments
431for choosing the displaying window).
432
433This takes precedence over the default display action, which is
434specified by `display-buffer-fallback-action'.
435
717a1362 436+++
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437**** New option `display-buffer-alist' maps buffer name regexps to
438display actions, taking precedence over `display-buffer-base-action'.
439
440+++
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441*** New option `window-combination-limit'.
442The new option `window-combination-limit' allows to return the space
443obtained for resizing or creating a window more reliably to the window
444from which such space was obtained.
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445
446+++
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447*** New option `window-combination-resize'.
448The new option `window-combination-resize' allows to split a window that
449otherwise cannot be split because it's too small by stealing space from
450other windows in the same combination. Subsequent resizing or deletion
451of the window will resize all windows in the same combination as well.
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452
453+++
454*** New commands `maximize-window' and `minimize-window'.
53964682 455These maximize and minimize the size of a window within its frame.
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456
457+++
458*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
459These functions allow to navigate through the live buffers that have
460been shown in a specific window.
461
104dc9c6 462+++
041d709f 463** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
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464This is handy for minibuffer-only frames, and is also used for the feature
465where mouse-1 pops up *Messages*"', which can now easily be changed.
041d709f 466
0bfd685e 467\f
eb199145 468* Editing Changes in Emacs 24.1
b350bdf2 469
892777ba 470** Search changes
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471+++
472*** C-y in Isearch is now bound to isearch-yank-kill, instead of
473isearch-yank-line.
5abc31ef 474+++
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475*** M-y in Isearch is now bound to isearch-yank-pop, instead of
476isearch-yank-kill.
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477+++
478*** M-s C-e in Isearch is now bound to isearch-yank-line.
479
ea4f7750 480+++
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481** New commands `count-words-region' and `count-words'.
482
483*** `count-lines-region' is now an alias for `count-words-region',
484bound to M-=, which shows the number of lines, words, and characters.
ea4f7750 485
bfd779dd 486+++
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487** The default value of `backup-by-copying-when-mismatch' is now t.
488
21100e7d 489+++
ec9da840 490** The command `just-one-space' (M-SPC), if given a negative argument,
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491also deletes newlines around point.
492
b9229673 493** Deletion changes
50b063c3 494+++
b9229673 495*** New option `delete-active-region'.
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496If non-nil, [delete] and DEL delete the region if it is active and no
497prefix argument is given. If set to `kill', these commands kill
498instead.
50b063c3 499+++
59ee0542 500*** New command `delete-forward-char', bound to [delete].
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501This is meant for interactive use, and obeys `delete-active-region'.
502The command `delete-char' does not obey `delete-active-region'.
50b063c3 503---
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504*** `delete-backward-char' is now a Lisp function.
505Apart from obeying `delete-active-region', its behavior is unchanged.
506However, the byte compiler now warns if it is called from Lisp; you
507should use delete-char with a negative argument instead.
ddb54206 508---
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509*** The option `mouse-region-delete-keys' has been deleted.
510
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511** Selection changes.
512
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513The default handling of clipboard and primary selections was changed
514to conform with modern X applications. In short, most commands for
515killing and yanking text now use the clipboard, while mouse commands
516use the primary selection.
517
518In the following, we provide a list of these changes, followed by a
519list of steps to get the old behavior back if you prefer that.
520
963578d3 521+++
b1ab31ae
CY
522*** `select-active-regions' now defaults to t.
523Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
963578d3 524the kill ring. The selected text is put in the primary selection, if
b1ab31ae
CY
525the system possesses a separate primary selection facility (e.g. X).
526
963578d3 527+++
b1ab31ae
CY
528**** `select-active-regions' also accepts a new value, `only'.
529This means to only set the primary selection for temporarily active
530regions (usually made by mouse-dragging or shift-selection);
531"ordinary" active regions, such as those made with C-SPC followed by
532point motion, do not alter the primary selection.
533
963578d3
CY
534---
535**** `mouse-drag-copy-region' now defaults to nil.
536
537+++
b1ab31ae
CY
538*** mouse-2 is now bound to `mouse-yank-primary'.
539This pastes from the primary selection, ignoring the kill-ring.
540Previously, mouse-2 was bound to `mouse-yank-at-click'.
541
963578d3 542+++
b1ab31ae 543*** `x-select-enable-clipboard' now defaults to t on all platforms.
963578d3 544+++
b1ab31ae
CY
545*** `x-select-enable-primary' now defaults to nil.
546Thus, commands that kill text or copy it to the kill-ring (such as
547M-w, C-w, and C-k) also use the clipboard---not the primary selection.
548
963578d3 549---
b1ab31ae
CY
550**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
551exactly equivalent to, respectively M-w, C-w, and C-y.
552
963578d3 553---
b1ab31ae
CY
554**** Note that on MS-Windows, `x-select-enable-clipboard' was already
555non-nil by default, as Windows does not support the primary selection
556between applications.
557
963578d3 558---
b1ab31ae 559*** To return to the previous behavior, do the following:
104c2fe9 560**** Change `select-active-regions' to nil.
b1ab31ae
CY
561**** Change `mouse-drag-copy-region' to t.
562**** Change `x-select-enable-primary' to t (on X only).
563**** Change `x-select-enable-clipboard' to nil.
564**** Bind `mouse-yank-at-click' to mouse-2.
f9d71b42 565
963578d3 566+++
084e6df3
JD
567*** Support for X cut buffers has been removed.
568
3fd50d5c
CY
569*** X clipboard managers are now supported.
570To inhibit this, change `x-select-enable-clipboard-manager' to nil.
4b80f674 571
50b063c3 572+++
99f053cf 573** New command `rectangle-number-lines', bound to `C-x r N', numbers
6b2c221e 574the lines in the current rectangle. With a prefix argument, this
99f053cf
JA
575prompts for a number to count from and for a format string.
576
6bf7006f 577+++
db7ab02f 578** The default value of redisplay-dont-pause is now t
6bf7006f
EZ
579This makes Emacs feel more responsive to editing commands that arrive
580at high rate, e.g. if you lean on some key, because stopping redisplay
581in the middle (when this variable is nil) forces more expensive
582updates later on, and Emacs appears to be unable to keep up.
583
e70b5064
CY
584+++
585** The behavior of <TAB> for active regions in Text mode has changed.
586In Text and related modes, typing <TAB> (`indent-for-tab-command')
587when the region is active causes Emacs to indent all the lines in the
588region, aligning them with the line previous to the first line in the
589region (or with the left margin if there is no previous line).
590
9bae34bf 591\f
eb199145 592* Changes in Specialized Modes and Packages in Emacs 24.1
efeb796b 593
bfd779dd 594+++
041d709f 595** Archive Mode has basic support for browsing and updating 7z archives.
d76674bb 596
b7c3692a 597** BibTeX mode
b2096d72 598---
2de69e00 599*** BibTeX mode now supports biblatex.
b2096d72
GM
600Use the variable bibtex-dialect to select different BibTeX dialects.
601bibtex-entry-field-alist is now an obsolete alias forbibtex-BibTeX-entry-alist.
602---
34699b85 603*** New command `bibtex-search-entries' bound to C-c C-a.
b2096d72 604---
b7c3692a 605*** New `bibtex-entry-format' option `sort-fields', disabled by default.
b2096d72 606---
022fe7ce
RW
607*** New variable `bibtex-search-entry-globally'.
608
cf16af42
GM
609** Calendar, Diary, and Appt
610
548d0a63
GM
611+++
612*** Diary entries can contain non-printing `comments'.
613See the variable `diary-comment-start'.
614
5006e634
GM
615+++
616*** Appointments can specify their individual warning times.
617See the variable `appt-warning-time-regexp'.
618
0a2bb1a9
GM
619---
620*** The function specified by `appt-disp-window-function' may be passed
621lists of arguments if multiple appointments are due at similar times.
622If you are using a custom function for this, you should update it.
623
d306b4da 624+++
7454f200
GM
625*** New function `diary-hebrew-birthday'.
626
e565dd37
GM
627---
628*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
629may no longer be nil, but must all be strings.
630
cf16af42
GM
631---
632*** The obsolete (since Emacs 22.1) method of enabling the appt package
633by adding appt-make-list to diary-hook has been removed. Use appt-activate.
634
635---
636*** Some appt variables (obsolete since Emacs 22.1) have been removed:
637appt-issue-message (use the function appt-activate)
638appt-visible/appt-msg-window (use the variable appt-display-format)
639
640---
641*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
642view-diary-entries, list-diary-entries, show-all-diary-entries
643
523eedb0
GM
644** Browse-url
645
646+++
647*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
648
649---
650*** The default browser used by the package is now the "xdg-open" program,
651on platforms that support it. This calls your desktop's preferred browser.
652
bbe531d6
GM
653+++
654** New CC Mode feature to "guess" the style in an existing buffer.
655The main entry is M-x c-guess.
041d709f
CY
656
657** comint and modes derived from it use the generic completion code.
658
659** Compilation mode
29eabb8e 660---
041d709f
CY
661*** Compilation mode can be used without font-lock-mode.
662`compilation-parse-errors-function' is now obsolete.
663
34c071c6
GM
664---
665*** New variable `compilation-filter-start', bound while
666compilation-filter-hook runs. It records the start position of the
667text inserted by compilation-filter.
041d709f 668
83274125 669---
47a6a35f
GM
670*** `compilation-error-screen-columns' and `compilation-first-column'
671are obeyed in the editing buffer. So programming language modes can
672set them, whereas previously only the value in the *compilation* buffer
673was used.
1dce7193 674
52834b6b
CY
675** Customize
676
b0d7d8af 677+++
52834b6b
CY
678*** Customize buffers now contain a search field.
679The search is performed using `customize-apropos'.
42d9cffa 680To turn off the search field, set custom-search-field to nil.
52834b6b 681
b0d7d8af 682+++
52834b6b
CY
683*** Custom options now start out hidden if at their default values.
684Use the arrow to the left of the option name to toggle visibility.
685
ff1796f3 686---
52834b6b
CY
687*** custom-buffer-sort-alphabetically now defaults to t.
688
b0d7d8af 689+++
52834b6b
CY
690*** The color widget now has a "Choose" button, which allows you to
691choose a color via list-colors-display.
692
041d709f
CY
693** D-Bus
694
5da3be7f
GM
695*** It is now possible to access buses other than the default system
696or session bus.
041d709f 697
5da3be7f
GM
698*** The dbus-register-method and dbus-register-property functions
699optionally do not register names.
041d709f 700
5da3be7f 701*** The new function dbus-register-service registers a known service name
041d709f
CY
702on a D-Bus without simultaneously registering a property or a method.
703
f5d6548a 704** Dired-x
c40a7de7 705---
f5d6548a
JL
706*** dired-jump and dired-jump-other-window called with a prefix argument
707read a file name from the minibuffer instead of using buffer-file-name.
708
817b48a7
GM
709+++
710*** The `dired local variables' feature provided by Dired-x is obsolete.
711The standard directory local variables feature replaces it.
8117868f 712
041d709f 713** ERC changes
7492acc9 714
c4077254
GM
715---
716*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
717controlling attempts to autojoin a channel.
041d709f
CY
718
719*** New variable `erc-coding-system-precedence': If we use `undecided'
720as the server coding system, this variable will then be consulted.
721The default is to decode strings that can be decoded as utf-8 as
722utf-8, and do the normal `undecided' decoding for the rest.
7492acc9 723
041d709f 724** Eshell changes
7492acc9 725
05f77e38
GM
726---
727*** The default value of `eshell-directory-name' has changed
728to be an "eshell" directory in `user-emacs-directory'.
729The old "~/.eshell/" directory is still used if it exists, though.
041d709f
CY
730
731** gdb-mi
88c5c7c8 732+++
05f77e38
GM
733*** The GDB User Interface has been migrated to GDB Machine Interface.
734It now supports multithread non-stop debugging and simultaneous
735debugging of several threads.
7492acc9 736
18af70d0
CY
737** Image mode
738
05f77e38
GM
739+++
740*** RET (`image-toggle-animation') toggles animation, if applicable.
741Animation plays once, unless the option `image-animate-loop' is non-nil.
18af70d0 742
041d709f 743** Info
723ee192 744
2ebc3b94
GM
745+++
746*** New command `info-display-manual' displays a named Info manual.
747If that manual is already visited in some Info buffer, it displays
748that buffer. (This is handy if you have many manuals in many *info*
749buffers, and don't remember the name of the buffer visiting the manual
750you want to consult.) Otherwise, it loads and displays the manual.
691cf4a0 751
88c5c7c8 752+++
24ea72d3
EZ
753*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
754This is for compatibility with the stand-alone Info reader program,
755and also because `Info-edit' is a rarely used command that is disabled
756by default.
757
758+++
06b08b88 759** MH-E has been upgraded to MH-E version 8.3.1.
041d709f 760See MH-E-NEWS for details.
37221432 761
ff1796f3 762---
041d709f 763** Modula-2 mode provides auto-indentation.
37221432 764
ff1796f3 765---
041d709f 766** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
3c3d4f5b 767
ff1796f3 768---
041d709f
CY
769** Prolog mode has been completely revamped, with lots of additional
770functionality such as more intelligent indentation, electricity, support for
771more variants, including Mercury, and a lot more.
772
773** Rmail
774
a7686350 775+++
041d709f
CY
776*** The command `rmail-epa-decrypt' decrypts OpenPGP data
777in the Rmail incoming message.
778
50419064
GM
779---
780*** The variable `rmail-message-filter' no longer has any effect.
781This change was made in Emacs 23.1 but was not advertised at the time.
782Try using `rmail-show-message-hook' instead.
783
717a1362 784** Shell mode
88c5c7c8 785+++
de0bde62 786*** Shell mode uses pcomplete rules, with the standard completion UI.
88c5c7c8 787+++
717a1362
CY
788*** The `shell' command prompts for the shell path name if the default
789directory is a remote file name and neither the environment variable
790$ESHELL nor the variable `explicit-shell-file-name' is set.
791
ddb54206 792---
34e8a2da 793** SQL mode
041d709f 794
34e8a2da
GM
795---
796*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
797and `sql-oracle-scan-on'.
041d709f 798
34e8a2da
GM
799---
800*** New custom variables control prompting for login parameters.
801Each supported product has a custom variable `sql-*-login-params',
802which is a list of the parameters to be prompted for before a
803connection is established.
041d709f 804
34e8a2da 805---
041d709f 806*** The command `sql-product-interactive' now takes a prefix argument,
34e8a2da 807which causes it to prompt for an SQL product.
041d709f 808
34e8a2da
GM
809---
810*** Product-specific SQL interactive commands now take prefix arguments.
041d709f
CY
811These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
812given a prefix argument, prompt for a name for the SQL interactive
813buffer. This reduces the need for calling `sql-rename-buffer'.
814
34e8a2da 815---
041d709f
CY
816*** SQL interactive modes suppress command continuation prompts, and
817replace tabs with spaces. The first change impacts multiple line SQL
818statements entered with C-j between each line, statements yanked into
819the buffer and statements sent with `sql-send-*' functions. The
34e8a2da
GM
820second prevents the MySQL and Postgres interpreters from listing
821object name completions when sent text via `sql-send-*' functions.
041d709f 822
34e8a2da 823---
041d709f
CY
824*** New command `sql-connect' starts a predefined SQLi session,
825using the login parameters from `sql-connection-alist'.
826
34e8a2da 827---
041d709f
CY
828*** New "Save Connection" menu item in SQLi buffers.
829This gathers the login params specified for the SQLi session, if it
830was not started by a connection, and saves them as a new connection.
831
34e8a2da
GM
832---
833*** New commands for listing database objects and details:
834sql-list-all and sql-list-table.
041d709f 835
34e8a2da 836---
041d709f
CY
837*** An API for manipulating SQL product definitions has been added.
838
839** TeX modes
840
e74e58c9 841+++
041d709f 842*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
412b9ee5 843
459bba37 844** Tramp
bfd779dd 845---
a808d31f 846*** There exists a new inline access method "ksu" (kerberized su).
bfd779dd 847---
459bba37 848*** The following access methods are discontinued: "ssh1_old",
ea843702 849"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
b011fbfe
GM
850+++
851*** The user option `remote-file-name-inhibit-cache' controls whether
852remote file attributes are cached for better performance.
bfd779dd 853---
58f74fe4
MA
854*** The option `ange-ftp-binary-file-name-regexp' has changed its
855default value to "".
b011fbfe
GM
856---
857*** Handlers for file-selinux-context and set-file-selinux-context for
858remote machines that support SELinux.
58f74fe4 859
b74c9672
GM
860+++
861** New function, url-queue-retrieve, fetches URLs asynchronously like
862url-retrieve does, but in parallel.
177549d0 863
0c32ce32
CY
864** VC and related modes
865
2edef1a0 866+++
0c32ce32 867*** Support for pulling on distributed version control systems.
dab3703d
GM
868`C-x v +' (`vc-pull') runs a "pull" operation, if it is supported
869(currently with Bzr, Git, and Mercurial), to update the current branch
870and working tree. A prefix argument means to prompt the user for
871specifics, e.g. a pull location.
0c32ce32 872
dab3703d
GM
873---
874*** `vc-update' is now an alias for `vc-pull'.
0c32ce32 875
2edef1a0 876+++
0c32ce32 877*** Support for merging on distributed version control systems.
dab3703d
GM
878The vc-merge command now runs a "merge" operation, if it is supported
879(currently with Bzr, Git, and Mercurial), to merge changes from
880another branch into the current one. It prompts for specifics, e.g. a
881merge source.
0c32ce32 882
bc859d5f 883+++
2afef60a 884*** New option `vc-revert-show-diff' controls whether `vc-revert'
bbe43420 885shows a diff while querying the user. It defaults to t.
2afef60a 886
9cff91f8 887+++
d4eb88c7
CY
888*** Log entries in some Log View buffers can be toggled to display a
889longer description by typing RET (log-view-toggle-entry-display).
dab3703d
GM
890This is currently supported for Bzr, Git, and Mercurial (to support
891another backend, define a `log-view-expanded-log-entry-function').
d4eb88c7
CY
892In the Log View buffers made by `C-x v L' (vc-print-root-log), you can
893use this to display the full log entry for the revision at point.
894
9cff91f8 895+++
1c6c854e
CS
896*** New command `vc-ediff' allows visual comparison of two revisions
897of a file similar to `vc-diff', but using ediff backend.
898
80c6d77f 899+++
86c60681
CY
900*** The option `vc-initial-comment' was removed in Emacs 23.2, but
901this was not advertised at the time.
902
903+++
904*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
905Since Emacs 23, it has done the same thing as `toggle-read-only', but
80c6d77f
GM
906this was not advertised at the time.
907
041d709f
CY
908** Obsolete modes
909
23d70505
GM
910---
911*** abbrevlist.el
912
f8ca9162
GM
913---
914*** erc-hecomplete.el (use erc-pcomplete.el instead)
23d70505
GM
915
916*** partial-completion-mode (complete.el) is obsolete.
041d709f
CY
917You can get a comparable behavior with:
918(setq completion-styles '(partial-completion initials))
919(setq completion-pcm-complete-word-inserts-delimiters t)
920
23d70505
GM
921---
922*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
923
b011fbfe 924[FIXME gnus.texi, message.texi need updating]
23d70505 925*** pgg is obsolete (use EasyPG instead)
041d709f 926
23d70505 927---
041d709f
CY
928*** sregex.el is obsolete, since rx.el is a strict superset.
929
23d70505
GM
930---
931*** s-region.el and pc-select.el are obsolete.
932They are superseded by shift-select-mode, enabled by default since 23.1.
933
934+++
935*** vc-mcvs.el is obsolete (for lack of a maintainer)
ca5eed61 936
0fe719e6
GM
937** Miscellaneous
938
05f77e38
GM
939+++
940*** The Landmark game is now invoked with `landmark', not `lm'.
941
942---
943*** In `ido-file-completion-map', C-v is no longer bound to ido-toggle-vc.
944(This interfered with cua-mode.)
945
9f678528
GM
946+++
947*** f90.el has some support for Fortran 2008 syntax.
948
0fe719e6
GM
949---
950*** `copyright-fix-years' can optionally convert consecutive years to ranges.
951
88c5c7c8 952+++
5b3e6db8
GM
953*** New command `nato-region' converts text to NATO phonetic alphabet.
954
eb199145
GM
955\f
956* New Modes and Packages in Emacs 24.1
d445b3f8 957
5abc31ef 958+++
60e56523 959** Occur Edit mode applies edits made in *Occur* buffers to the
8c0f49f0 960original buffers. It is bound to "e" in Occur mode.
60e56523 961
cd3308f3 962+++
a075a2c5
GM
963** New global minor mode electric-pair-mode.
964When enabled, typing an open parenthesis automatically inserts the
965matching closing one.
966
cd3308f3 967+++
a075a2c5
GM
968** New global minor mode electric-indent-mode.
969When enabled, typing certain characters triggers reindentation.
cd3308f3
GM
970Major modes wishing to use this can set electric-indent-chars or
971electric-indent-functions.
a075a2c5 972
cd3308f3 973+++
a075a2c5
GM
974** New global minor mode electric-layout-mode.
975When enabled, typing certain characters automatically inserts newlines.
cd3308f3 976Major modes wishing to use this can set electric-layout-rules.
3b843809 977
72ca698c 978+++
a83ec3c9
CY
979** tabulated-list.el provides a generic major mode for tabulated data,
980from which other modes can be derived.
981
d02c9bcd
SM
982** pcase.el provides the ML-style pattern matching macro `pcase'.
983
7725ebb7
MA
984** secrets.el is an implementation of the Secret Service API, an
985interface to password managers like GNOME Keyring or KDE Wallet. The
065f2743
MA
986Secret Service API requires D-Bus for communication. The command
987`secrets-show-secrets' offers a buffer with a visualization of the
988secrets.
7725ebb7 989
f9e78150
MA
990** notifications.el provides an implementation of the Desktop
991Notifications API. It requires D-Bus for communication.
992
12fe5bcc
MA
993** soap-client.el supports access to SOAP web services from Emacs.
994soap-inspect.el is an interactive inspector for SOAP WSDL structures.
995
ff1796f3
GM
996---
997** New generic mode, xmodmap-generic-mode, for xmodmap files.
ad7d6ecb 998
cefee440 999---
53bbe3ad 1000** New emacs-lock.el package.
cefee440
GM
1001(The previous version has been moved to obsolete/old-emacs-lock.el.)
1002Now, there is a proper minor mode `emacs-lock-mode'.
1003Protection against exiting Emacs and killing the buffer can be set
1004separately. The mechanism for automatically turning off protection
1005for buffers with dead inferior processes has been generalized.
53bbe3ad 1006
eb199145
GM
1007\f
1008* Incompatible Lisp Changes in Emacs 24.1
6dfcbe31 1009
fa6996bc
EZ
1010---
1011** `char-direction-table' and the associated function `char-direction'
1012were deleted. They were buggy and inferior to the new support of
1013bidirectional editing introduced in Emacs 24. If you need the
1014bidirectional properties of a character, use `get-char-code-property'
1015with the last argument `bidi-class'.
1016
a6326082 1017+++
470d996d
TV
1018** `copy-directory' now copies the source directory as a subdirectory
1019of the target directory, if the latter is an existing directory. The
1020new optional arg COPY-CONTENTS, if non-nil, makes the function copy
1021the contents directly into a pre-existing target directory.
1022
3b90aec0 1023+++
9173a8fb
CY
1024** For mouse click input events in the text area, the Y pixel
1025coordinate in the POSITION list now counts from the top of the text
1026area, excluding any header line. Previously, it counted from the top
1027of the header line.
1028
2b18055e
GM
1029---
1030** Support for "old-style" backquotes, which have been obsolete for
1031more than 10 years, has been further reduced. Now a backquote not
1032followed by a space is always treated as a "new-style" backquote.
1033Please consider completely removing all "old-style" backquotes from
1034your code as a matter of some urgency. If your code uses backquotes
1035as documented in the Elisp manual, and compiles without warning, then
1036you have nothing to do in this regard. Code not following the
1037appropriate conventions may fail to compile. The most common cause of
1038trouble seems to be an old-style backquote followed by a newline.
288cf4e9 1039
c31b4ce3 1040---
aab25355
GM
1041** view-buffer now treats special mode-class in the same way that
1042view-file has since Emacs 22 (ie, it won't enable View mode if the
1043major-mode is special).
fd5c9dfa 1044
e1ac4066 1045+++
60d47423
GM
1046** Passing a nil argument to a minor mode defined by define-minor-mode
1047now turns the mode ON unconditionally. This is so that you can write, e.g.
1048 (add-hook 'text-mode-hook 'foo-minor-mode)
1049to enable foo-minor-mode in Text mode buffers, thus removing the need
1050for `turn-on-foo-minor-mode' style functions.
6431f2e6 1051
ddb54206 1052+++
6431f2e6 1053** During startup, Emacs no longer adds entries for `menu-bar-lines'
0a19a6f8
JB
1054and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
1055With these alist entries omitted, `make-frame' checks the value of the
1056variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
1057a menu-bar or tool-bar, respectively. If the alist entries are added,
1058they override the value of `menu-bar-mode'/`tool-bar-mode'.
6431f2e6 1059
50b063c3 1060+++
fe0aa820
CY
1061** Regions created by mouse dragging are now normal active regions,
1062similar to the ones created by shift-selection. In previous Emacs
1063versions, these regions were delineated by `mouse-drag-overlay', which
1064has now been removed.
d6d8ee7a 1065
34c99998
GM
1066+++
1067** The fourth argument of filter-buffer-substring, which says to remove
1068text properties from the final result, has been removed.
1069Eg simply pass the result through substring-no-properties if you need this.
1070
334023be 1071---
4583e796
GM
1072** cl.el no longer provides `cl-19'.
1073
be890cb8
SM
1074** The menu bar bindings's caches are not used any more.
1075Use (where-is-internal <def> nil t) instead.
1076
3a970881
GM
1077+++
1078** The following obsolete (mostly since at least 21.1) functions and aliases
1079have been removed (the appropriate new function is given in parentheses):
1080comint-kill-output (comint-delete-output),
1081decompose-composite-char (char-to-string),
1082outline-visible (outline-invisible-p),
1083internal-find-face (facep), internal-get-face (facep and check-face),
1084frame-update-faces (not needed),
1085frame-update-face-colors (frame-set-background-mode),
1086x-frob-font-weight and x-frob-font-slant (appropriate make-face-* function),
1087x-make-font-bold and x-make-font-demibold (make-face-bold),
1088x-make-font-italic and x-make-font-oblique (make-face-italic),
1089x-make-font-bold-italic (make-face-bold-italic),
1090x-make-font-unbold (make-face-unbold),
1091x-make-font-unitalic (make-face-unitalic),
1092mldrag-drag-mode-line (mouse-drag-mode-line),
1093mldrag-drag-vertical-line (mouse-drag-vertical-line),
1094iswitchb-default-keybindings (iswitchb-mode), char-bytes (== 1),
1095isearch-return-char (isearch-printing-char), make-local-hook (not needed)
1096
1097+++
1098** The following obsolete (mostly since at least 21.1) variables and varaliases
1099have been removed (the appropriate new variable is given in parentheses):
1100checkdoc-minor-keymap (checkdoc-minor-mode-map),
1101vc-header-alist (vc-BACKEND-header), directory-sep-char (== ?/)
1102font-lock-defaults-alist (font-lock-defaults), and e (float-e).
3226d6ca 1103
334023be 1104---
041d709f 1105** The following obsolete files were removed:
7b0e3048
GM
1106sc.el, x-menu.el, rnews.el, rnewspost.el
1107
33658d4e
CY
1108** FIXME finder-inf.el changes.
1109
eb199145
GM
1110\f
1111* Lisp changes in Emacs 24.1
9097e8af 1112
735cc5ca 1113+++
041d709f
CY
1114** Code can now use lexical scoping by default instead of dynamic scoping.
1115The `lexical-binding' variable lets code use lexical scoping for local
48da7392
GM
1116variables. It is typically set via a file-local variable in the first
1117line of the file, in which case it applies to all the code in that file.
735cc5ca 1118+++
041d709f
CY
1119*** `eval' takes a new optional argument `lexical' to choose the new lexical
1120binding instead of the old dynamic binding mode.
735cc5ca 1121+++
041d709f
CY
1122*** Lexically scoped interpreted functions are represented with a new form
1123of function value which looks like (closure ENV ARGS &rest BODY).
1124
1125*** New macro `letrec' to define recursive local functions.
735cc5ca 1126+++
041d709f
CY
1127*** New function `special-variable-p' to check whether a variable is
1128declared as dynamically bound.
1129
d273439c 1130+++
041d709f
CY
1131** An Emacs Lisp testing tool is now included.
1132Emacs Lisp developers can use this tool to write automated tests for
1133their code. See the ERT info manual for details.
1134
1135** Changes for bidirectional display and editing
f1816485 1136
041d709f
CY
1137+++
1138*** New function `current-bidi-paragraph-direction'.
f1816485
EZ
1139This returns the actual value of base direction of the paragraph at
1140point.
041d709f
CY
1141
1142+++
1143*** New function `bidi-string-mark-left-to-right'.
f1816485
EZ
1144Given a string containing characters from right-to-left (RTL) scripts,
1145this function returns another string which can be safely inserted into
1146a buffer, such that any following text will be always displayed to the
1147right of that string. (This works by appending the Unicode
1148"LEFT-TO-RIGHT MARK" character when the argument string might need that.)
041d709f
CY
1149
1150This is useful when the buffer has overall left-to-right (LTR)
1151paragraph direction and you need to insert a string whose contents and
f1816485
EZ
1152directionality are not known in advance, without disrupting the layout
1153of the line.
041d709f 1154
bee0fcef 1155** Window changes
c4682d18
MR
1156+++
1157*** Window tree functions are accessible in Elisp.
1158Functions are provided to return the parent, siblings or child windows
1159of any window including internal windows (windows not associated with a
1160buffer) in the window tree.
291d142b 1161+++
24300f5f
CY
1162**** New function `window-valid-p' gives non-nil for live and internal
1163windows.
c4682d18 1164+++
24300f5f 1165**** Window manipulation can deal with internal windows.
c4682d18
MR
1166Many window handling functions like `split-window', `delete-window', or
1167`delete-other-windows' as well as the window resizing functions can now
1168act on any window including internal ones.
c4682d18
MR
1169+++
1170*** window-total-height/-width vs window-body-height/-width.
1171The function `window-height' has been renamed to `window-total-height'
1172and `window-width' has been renamed to `window-body-width'. The old
1173names are provided as aliases. Two new functions `window-total-width'
1174and `window-body-height' are provided.
c4682d18
MR
1175+++
1176*** Window parameters specific to window handling functions.
1177For each window you can specify a parameter to override the default
1178behavior of a number of functions like `split-window', `delete-window'
ed6235ea
MR
1179and `delete-other-windows'. The variable `ignore-window-parameters'
1180allows to ignore processing such parameters.
c4682d18
MR
1181+++
1182*** New semantics of third argument of `split-window'.
c4682d18
MR
1183The third argument of `split-window' has been renamed to SIDE and can be
1184set to any of the values 'below, 'right, 'above, or 'left to make the
1185new window appear on the corresponding side of the window that shall be
1186split. Any other value of SIDE will cause `split-window' to split the
1187window into two side-by-side windows as before.
c4682d18
MR
1188+++
1189*** Window resizing functions.
487ffd7a 1190A new standard function for resizing windows called `window-resize' has
c4682d18
MR
1191been introduced. This and all other functions for resizing windows no
1192longer delete any windows when they become too small.
b3c0dbfd
MR
1193+++
1194*** Deleting the selected window now selects the most recently selected
1195live window on that frame instead.
c4682d18
MR
1196+++
1197*** `adjust-window-trailing-edge' adjustments.
1198`adjust-window-trailing-edge' can now deal with fixed-size windows and
1199is able to resize other windows if a window adjacent to the trailing
1200edge cannot be shrunk any more. This makes its behavior more similar to
1201that of Emacs 21 without compromising, however, its inability to delete
1202windows which was introduced in Emacs 22.
c4682d18
MR
1203+++
1204*** Window-local buffer lists.
1205Windows now have local buffer lists. This means that removing a buffer
1206from display in a window will preferably show the buffer previously
1207shown in that window with its previous window-start and window-point
1208positions. This also means that the same buffer may be automatically
1209shown twice even if it already appears in another window.
0e406a72 1210+++
bee0fcef
CY
1211*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
1212which if non-nil requires the buffer to be displayed in the currently
1213selected window, signaling an error otherwise. If nil, another window
1214can be used, e.g. if the selected one is strongly dedicated.
24300f5f 1215+++
0a2132ba 1216*** `split-window-vertically' and `split-window-horizontally' renamed
2d197ffb
CY
1217to `split-window-below' and `split-window-right' respectively.
1218The old names are kept as aliases.
24300f5f 1219+++
0a2132ba
CY
1220*** Display actions
1221
1222**** The second arg to `display-buffer' and `pop-to-buffer' is now
1223named ACTION, and takes a display action of the same form as
1224`display-buffer-base-action' (see Changes, above). A non-nil,
1225non-list value is treated specially, as the old meaning.
1226
1227**** New variable `display-buffer-overriding-action'.
1228
1229**** The procedure of `display-buffer' etc. to choose a window is
1230determined by combining `display-buffer-overriding-action',
1231`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
1232and `display-buffer-fallback-action'. The second and fourth of these
1233are user-customizable variables.
1234
1235See the docstring of `display-buffer' for details.
bee0fcef 1236
ed6235ea
MR
1237+++
1238*** New behavior of `quit-window'.
1239The behavior of `quit-window' has been changed in order to restore the
1240state before the last buffer display operation in that window.
1241
d83dc65b
MR
1242+++
1243*** The new option `frame-auto-hide-function' lets you choose between
53964682 1244iconifying or deleting a frame when burying a buffer shown in a dedicated
d83dc65b
MR
1245frame or quitting a window showing a buffer in a frame of its own.
1246
20d2304d
CY
1247+++
1248*** New functions `window-state-get' and `window-state-put'.
1249These functions allow to save and restore the state of an arbitrary
1250frame or window as an Elisp object.
1251
a2a25d24 1252** Completion
041d709f 1253
a2a25d24
SM
1254*** New variable completion-extra-properties used to specify extra properties
1255of the current completion:
1256- :annotate-function, same as the old completion-annotate-function.
1257- :exit-function, function to call after completion took place.
1258
1259*** Functions on completion-at-point-functions can return any of the properties
1260valid for completion-extra-properties.
1261
1262*** completion-annotate-function is obsolete.
1263
620c53a6
SM
1264*** New `metadata' method for completion tables. The metadata thus returned
1265can specify various details of the data returned by `all-completions':
1266- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
1267 used to select a style in completion-category-overrides.
1268- `annotation-function' to add annotations in *Completions*.
1269- `display-sort-function' to specify how to sort entries in *Completions*.
1270- `cycle-sort-function' to specify how to sort entries when cycling.
1271
de09aa52
CY
1272*** minibuffer-local-filename-must-match-map is not used any more.
1273Instead, the bindings in minibuffer-local-filename-completion-map are
1274combined with minibuffer-local-must-match-map.
1275
1276*** New variable `completing-read-function' allows overriding the
1277behavior of `completing-read'.
1278
d366bd53 1279+++
f042970d 1280** `glyphless-char-display' can now distinguish between graphical and
16a43933
CY
1281text terminal display, via a char-table entry that is a cons cell.
1282
da91b5f2
CY
1283** `open-network-stream' can now be used to open an encrypted stream.
1284It now accepts an optional `:type' parameter for initiating a TLS
1285connection, directly or via STARTTLS. To do STARTTLS, additional
1286parameters (`:end-of-command', `:success', `:capabilities-command')
1287must also be supplied.
1288
ddb54206 1289+++
f6d62986
SM
1290** pre/post-command-hook are not reset to nil upon error.
1291Instead, the offending function is removed.
1292
b1f6fa26
CY
1293** New hook types
1294
e7bc51d0 1295+++
b1f6fa26
CY
1296*** New function `run-hook-wrapped' for running an abnormal hook by
1297passing the hook functions as arguments to a "wrapping" function.
e7bc51d0 1298Like `run-hook-with-args-until-success', it stops at the first
5385447f 1299non-nil return value.
e7bc51d0 1300
b1f6fa26
CY
1301+++
1302*** New macro `with-wrapper-hook' for running an abnormal hook as a
1303set of "wrapping" filters, similar to around advice.
54521c99
GM
1304(A version of this macro was actually added in Emacs 23.2 but was not
1305advertised at the time.)
f6d62986 1306
866c1d22
GM
1307+++
1308** The macros `condition-case-no-debug' and `with-demoted-errors' were
1309added in Emacs 23.1, but not advertised.
d6b1d521 1310
953cebf5
GM
1311+++
1312** The new function `server-eval-at' allows evaluation of Lisp forms on
1313named Emacs server instances, using TCP sockets.
7deebf1b 1314
1b9f60cc
GM
1315+++
1316** `call-process' and `call-process-region' allow a `(:file "file")' spec
1317to redirect STDOUT to a file.
7deebf1b 1318
04e2ce72
CY
1319---
1320** Variable `stack-trace-on-error' removed.
e7f7fbaa
SM
1321Also the debugger can now "continue" from an error, which means it will jump
1322to the error handler as if the debugger had not been invoked instead of
1323jumping all the way to the top-level.
1324
da97a9e6
CY
1325+++
1326** The function format-time-string now supports the %N directive, for
1327higher-resolution time stamps.
1328
7e2734bc 1329+++
3ef01959
CY
1330** New function `read-char-choice' reads a restricted set of characters,
1331discarding any inputs not inside the set.
1332
4dee2dea 1333+++
2e288d54
JB
1334** `image-library-alist' is renamed to `dynamic-library-alist'.
1335The variable is now used to load all kind of supported dynamic libraries,
1336not just image libraries. The previous name is still available as an
1337obsolete alias.
1338
04e2ce72
CY
1339** New variable `syntax-propertize-function'.
1340This replaces `font-lock-syntactic-keywords' which is now obsolete.
cf38dd42
SM
1341This allows syntax-table properties to be set independently from font-lock:
1342just call syntax-propertize to make sure the text is propertized.
1343Together with this new variable come a new hook
1344syntax-propertize-extend-region-functions, as well as two helper functions:
1345syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
1346as-is; and syntax-propertize-rules which provides a new way to specify
1347syntactic rules.
1348
f58b9822 1349+++
a2e5caf7
SM
1350** New hook post-self-insert-hook run at the end of self-insert-command.
1351
7cf78aac 1352+++
c5683ceb 1353** Syntax tables support a new "comment style c" additionally to style b.
041d709f 1354
4dee2dea 1355---
4e2db1fe 1356** frame-local variables cannot be let-bound any more.
041d709f 1357
15de15c6 1358** Major and minor mode changes
3fd50d5c 1359+++
15de15c6
CY
1360*** `prog-mode' is a new major mode from which programming modes
1361should be derived.
041d709f 1362
c2f03a4a 1363+++
15de15c6
CY
1364**** `prog-mode-hook' can be used to enable features for programming
1365modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
1366on-the-fly spell checking for comments and strings.
1367
12f381b7 1368+++
15de15c6
CY
1369*** New hook `change-major-mode-after-body-hook', run by
1370`run-mode-hooks' just before any other mode hooks.
1371
c7301fe4 1372+++
7a9a2fc6
GM
1373*** Enabled globalized minor modes can be disabled in specific major modes.
1374If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
1375major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
15de15c6 1376
56afad3a 1377+++
15de15c6 1378*** `define-minor-mode' accepts a new keyword :variable.
f44379e7 1379
04e2ce72 1380+++
b2957ea8 1381** `delete-file' and `delete-directory' now accept optional arg TRASH.
f1a5d776
CY
1382Trashing is performed if TRASH and `delete-by-moving-to-trash' are
1383both non-nil. Interactively, TRASH defaults to t, unless a prefix
1384argument is supplied (see Trash changes, above).
53967e09 1385
94bc7984 1386---
9317e499 1387** `facemenu-read-color' is now an alias for `read-color'.
94bc7984
GM
1388
1389+++
1390** The command `read-color' now requires a match for a color name
1391or RGB triplet, instead of signaling an error if the user provides
1392invalid input.
9317e499 1393
f7c9199f 1394+++
4039c786
CY
1395** Tool-bars can display separators.
1396Tool-bar separators are handled like menu separators in menu-bar maps,
94975270 1397i.e. via menu entries of the form `(menu-item "--")'.
9317e499 1398
00fe2df1
JL
1399** Image API
1400
eea14f31 1401+++
18af70d0
CY
1402*** Animated images support (currently animated gifs only).
1403
eea14f31 1404+++
18af70d0
CY
1405**** `image-animated-p' returns non-nil if an image can be animated.
1406
eea14f31 1407+++
18af70d0
CY
1408**** `image-animate' animates a supplied image spec.
1409
eea14f31 1410+++
18af70d0
CY
1411**** `image-animate-timer' returns the timer object for an image that
1412is being animated.
00fe2df1 1413
7cb76fe0
GM
1414---
1415*** `image-extension-data' has been renamed to `image-metadata'.
1416The old name is an obsolete alias to the new one.
1546c559 1417
bba26374 1418+++
b4ac6e8c
GM
1419*** Image mode can view any image type that ImageMagick supports.
1420This requires Emacs to be built with ImageMagick support.
31fd3586
GM
1421Then the function `imagemagick-types' returns a list of image file
1422extensions that your installation of ImageMagick supports. The
041d709f
CY
1423function `imagemagick-register-types' enables ImageMagick support for
1424these image types, minus those listed in `imagemagick-types-inhibit'.
bba26374 1425Visiting one of these file types will then use Image mode.
041d709f 1426
b4ac6e8c
GM
1427---
1428*** New commands to resize and rotate images in Image mode.
1429These require Emacs to be built with ImageMagick support.
1430image-transform-fit-to-height, image-transform-fit-to-width,
1431image-transform-set-rotation, image-transform-set-scale.
1432
71c17aec 1433** XML and HTML parsing
043efd56
GM
1434If Emacs is compiled with libxml2 support, there are two new functions:
1435`libxml-parse-html-region' (which parses "real world" HTML) and
1436`libxml-parse-xml-region' (which parses XML). Both return an Emacs
1437Lisp parse tree.
4b9832a6
CY
1438
1439FIXME: These should be front-ended by xml.el.
1440
e2574f2c
TZ
1441** GnuTLS
1442
31fd3586 1443*** New library `gnutls.el'.
573559b4 1444This requires Emacs to have been built with GnuTLS support.
31fd3586
GM
1445The main functions are `open-gnutls-stream' and `gnutls-negotiate'.
1446It's easiest to use these functions through `open-network-stream'
1447because it can upgrade connections through STARTTLS opportunistically
1448or use plain SSL, depending on your needs. For debugging, set
1449`gnutls-log-level' greater than 0.
71c17aec 1450
a6020335
MH
1451** Isearch
1452
7cb76fe0 1453---
a6020335
MH
1454*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
1455
ddb54206 1456+++
9326ba26
CY
1457** Progress reporters can now "spin".
1458The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
1459now be nil, or omitted. This makes a "non-numeric" reporter. Each
1460time you call `progress-reporter-update' on that progress reporter,
1461with a nil or omitted VALUE argument, the reporter message is
1462displayed with a "spinning bar".
1463
8f05da42 1464+++
3e214b50
JB
1465** New variable `revert-buffer-in-progress-p' is true while a buffer is
1466being reverted, even if the buffer has a local `revert-buffer-function'.
1467
001bf877
GM
1468---
1469** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
1470If delayed-warnings-list is non-nil, the command loop calls
1471delayed-warnings-hook after post-command-hook. At present, this is
1472only used by Emacs on some platforms to display warnings during
1473startup, which might otherwise not be noticed. This uses the functions
1474display-delayed-warnings and collapse-delayed-warnings.
1475
638f053a 1476
e145f188
GM
1477+++
1478** `set-auto-mode' now respects mode: local variables at the end of files,
1479as well as those in the -*- line.
1480
6420d28b
CY
1481---
1482** rx.el has a new `group-n' construct for explicitly numbered groups.
1483
dac86404
GM
1484+++
1485** New function `make-composed-keymap' that constructs a new keymap
1486from multiple input maps. You can use this to make a keymap that
1487inherits from multiple maps, eg:
1488 (set-keymap-parent newmap (make-composed-keymap othermap parent))
43dc9f5b 1489
7aa5aad8
GM
1490+++
1491** Set `debug-on-event' to make Emacs enter the debugger e.g. on receipt
1492of SIGUSR1. This can be useful when `inhibit-quit' is set.
12ca40ec 1493
ddb54206 1494+++
27f7ef2f 1495** New reader macro ## that stands for the empty symbol.
43dc9f5b
AS
1496This means that the empty symbol can now be read back. Also, #: by itself
1497(when not immediately followed by a possible symbol character) stands for
1498an empty uninterned symbol.
041d709f 1499
fead402d
CY
1500+++
1501** New math functions `isnan', `copysign', `frexp', `ldexp'.
1502
041d709f
CY
1503** Obsolete functions and variables
1504
05f77e38
GM
1505---
1506*** `tooltip-use-echo-area' is obsolete.
1507Rather than setting this to t, disable Tooltip mode instead.
1508
34c99998 1509+++
041d709f
CY
1510*** buffer-substring-filters is obsolete.
1511Use `filter-buffer-substring-functions' instead.
1512
7cb76fe0 1513---
041d709f
CY
1514*** `byte-compile-disable-print-circle' is obsolete.
1515
f160676e 1516---
041d709f 1517*** `deferred-action-list' and `deferred-action-function' are obsolete.
f160676e
GM
1518Use `post-command-hook' instead.
1519
d366bd53 1520+++
67e729a5
CY
1521*** `font-lock-maximum-size' is obsolete.
1522
eb199145
GM
1523\f
1524* Changes in Emacs 24.1 on non-free operating systems
d53a60a6 1525
a2f0118c 1526---
7a22e700 1527** On MS Windows, Emacs warns when using the obsolete init file _emacs,
a2f0118c
GM
1528and also when HOME is set to C:\ by default.
1529
7a22e700 1530** New configure.bat options
04779484 1531
a0d363f4 1532+++
7a22e700 1533*** --enable-checking builds Emacs with extra runtime checks.
e3aef5c6 1534
a0d363f4 1535+++
7a22e700 1536*** --distfiles specifies files to be included in binary distribution.
e2574f2c 1537
a0d363f4 1538+++
7a22e700
OK
1539*** --without-gnutls disables automatic GnuTLS detection.
1540
a0d363f4
GM
1541+++
1542*** --lib for general library linkage, works with the USER_LIBS build variable.
e2574f2c 1543
a0d363f4 1544+++
0a19a6f8 1545** New make target `dist' to create binary distribution for MS Windows.
e3aef5c6 1546
1f5e1a16
GM
1547---
1548** The Lisp function `w32-default-color-map' is now obsolete.
1549(It is only used internally in the Emacs C code.)
5430d399 1550
1f5e1a16
GM
1551+++
1552** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
1553reappear on mouse-over. (Requires OS X 10.6 or later.)
04e2ce72 1554
05197f40 1555\f
a933dad1 1556----------------------------------------------------------------------
5b87ad55 1557This file is part of GNU Emacs.
a933dad1 1558
ab73e885 1559GNU Emacs is free software: you can redistribute it and/or modify
5b87ad55 1560it under the terms of the GNU General Public License as published by
ab73e885
GM
1561the Free Software Foundation, either version 3 of the License, or
1562(at your option) any later version.
5b87ad55
GM
1563
1564GNU Emacs is distributed in the hope that it will be useful,
1565but WITHOUT ANY WARRANTY; without even the implied warranty of
1566MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1567GNU General Public License for more details.
a933dad1 1568
5b87ad55 1569You should have received a copy of the GNU General Public License
ab73e885 1570along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
a933dad1 1571
05197f40 1572\f
a933dad1
DL
1573Local variables:
1574mode: outline
1575paragraph-separate: "[ \f]*$"
1576end: