NEWS 55.3 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

3
Copyright (C) 2010-2012  Free Software Foundation, Inc.
4
See the end of the file for license conditions.
Dave Love's avatar
#  
Dave Love committed
5

6
Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 8
If possible, use M-x report-emacs-bug.

9
This file is about changes in Emacs version 24.
10

11 12
See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
and NEWS.1-17 for changes in older Emacs versions.
13 14 15

You can narrow news to a specific version by calling `view-emacs-news'
with a prefix argument or by typing C-u C-h C-n.
16

17 18 19 20 21 22 23 24

Temporary note:
 +++ indicates that the appropriate manual has already been updated.
 --- means no change in the manuals is called for.
When you add a new item, please add it without either +++ or ---
so we will look at it and add it to the manual.


25
* Installation Changes in Emacs 24.1
Chong Yidong's avatar
Chong Yidong committed
26

Glenn Morris's avatar
Glenn Morris committed
27
---
28 29 30 31
** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
to configure.  Note that other libraries used by Emacs, RSVG and GConf,
also depend on Gtk+.  You can disable them with --without-rsvg and
--without-gconf.
32 33

---
34 35 36 37
** Emacs can be compiled with GnuTLS support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-gnutls'.  See below for GnuTLS features.
38

Glenn Morris's avatar
Glenn Morris committed
39
---
40 41 42 43
** Emacs can be compiled with SELinux support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-selinux'.  See below for SELinux features.
Glenn Morris's avatar
Glenn Morris committed
44

45
---
46 47 48 49
** Emacs can be compiled with ImageMagick support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-imagemagick'.  See below for ImageMagick features.
Glenn Morris's avatar
Glenn Morris committed
50
This feature is not available for the Nextstep or MS ports.
51

52 53 54 55 56 57
---
** Emacs can be compiled with libxml2 support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-xml2'.  See below for libxml2 features.

58
---
Paul Eggert's avatar
Paul Eggert committed
59 60
** There is a new configure option --with-wide-int.
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
61 62
On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
to about 2 GiB.
Paul Eggert's avatar
Paul Eggert committed
63

64
---
65 66
** By default, the installed Info and man pages are compressed.
You can disable this by configuring --without-compress-info.
67

68 69 70 71 72 73 74 75 76 77
---
** There are new configure options:
--with-mmdf, --with-mail-unlink, --with-mailhost.
These provide no new functionality, they just remove the need to edit
lib-src/Makefile by hand in order to use the associated features.

---
** There is a new configure option --enable-use-lisp-union-type.
This is only useful for Emacs developers to debug certain types of bugs.
This is not a new feature; only the configure flag is new.
Chong Yidong's avatar
Chong Yidong committed
78

79
---
Chong Yidong's avatar
Chong Yidong committed
80 81 82 83 84 85 86
** The standalone programs digest-doc and sorted-doc are removed.
Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.

---
** The standalone program `fakemail' is removed.
If you need it, feedmail.el provides a superset of the functionality.

87

88
* Startup Changes in Emacs 24.1
89

90
---
91
** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
Glenn Morris's avatar
Glenn Morris committed
92 93
command line arguments, and the EMACS_UNIBYTE environment variable, no
longer have any effect.  (They were declared obsolete in Emacs 23.)
94

95
+++
96
** New command line option `--no-site-lisp' removes site-lisp directories
97 98 99
from load-path.  -Q now implies this.  This option does not affect the
EMACSLOADPATH environment variable (and hence has no effect for
Nextstep builds.)
100

101

102
* Changes in Emacs 24.1
103

104
+++
Chong Yidong's avatar
Chong Yidong committed
105
** auto-mode-case-fold is now enabled by default.
106

107
** Completion
108

109
*** shell-mode uses pcomplete rules, with the standard completion UI.
110
+++
111 112
*** Many packages have been changed to use `completion-at-point'
rather than their own completion code.
113
+++
114
*** `completion-at-point' now handles tags and semantic completion.
115
---
116 117
*** Completion in a non-minibuffer now tries to detect the end of completion
and pops down the *Completions* buffer accordingly.
118
+++
119
*** Completion can cycle, depending on completion-cycle-threshold.
120
+++
121
*** New completion style `substring'.
122
+++
123
*** Completion style can be set per-category `completion-category-overrides'.
124
+++
125 126
*** Completion of buffers now uses substring completion by default.

127 128
** Mail changes

129 130
+++
*** The default of `send-mail-function' is now `sendmail-query-once',
Chong Yidong's avatar
Chong Yidong committed
131 132 133 134
which asks the user (once) whether to use the smtpmail package to send
email, or to use the old defaults that rely on external mail
facilities (`sendmail-send-it' on GNU/Linux and other Unix-like
systems, and `mailclient-send-it' on Windows).
135

Chong Yidong's avatar
Chong Yidong committed
136
*** smtpmail changes
137

Chong Yidong's avatar
Chong Yidong committed
138 139 140
**** smtpmail now uses encrypted connections (via STARTTLS) if the
mail server supports them.  It also uses the auth-source framework for
getting credentials.
141

Chong Yidong's avatar
Chong Yidong committed
142 143 144 145 146
**** The variable `smtpmail-auth-credentials' has been removed.
That variable used to have the default value "~/.authinfo", in which
case you won't see any difference.  But if you changed it to be a list
of user names and passwords, that setting is now ignored; you will be
prompted for the user name and the password, which will then be saved
147 148 149 150
to ~/.authinfo.  (To control where and how the credentials are stored,
see the auth-source manual.  You may want to change the auth-source
preferences if you want to store the credentials encrypted, for
instance.)
151

Chong Yidong's avatar
Chong Yidong committed
152 153
You can also manually copy the credentials to your ~/.authinfo file.
For example, if you had
154

Chong Yidong's avatar
Chong Yidong committed
155 156
  (setq smtpmail-auth-credentials
        '(("mail.example.org" 25 "jim" "s!cret")))
157 158 159

then the equivalent line in ~/.authinfo would be

Chong Yidong's avatar
Chong Yidong committed
160 161 162
  machine mail.example.org port 25 login jim password s!cret

**** The variable `smtpmail-starttls-credentials' has been removed.
163

Juanma Barranquero's avatar
Juanma Barranquero committed
164
If you had that set, then you need to put
165

Chong Yidong's avatar
Chong Yidong committed
166
  machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
167 168 169

in your ~/.authinfo file instead.

170
*** Mail mode changes (this is the old Mail mode, not Message mode)
171
+++
172
**** New command `mail-add-attachment' for adding MIME attachments
173
---
174 175
**** The command `mail-attach-file' was renamed to `mail-insert-file'.
The old name is now an obsolete alias to the new name.
176

177 178 179 180 181
+++
*** You can type C-c m from M-x report-emacs-bug if you prefer, and if
your system supports it, to transfer your report to your desktop's
preferred mail client.  This uses either the "xdg-email" utility, or
OS X's "open" command.
Glenn Morris's avatar
Glenn Morris committed
182

Chong Yidong's avatar
Chong Yidong committed
183
** Emacs server and client changes
184
+++
Chong Yidong's avatar
Chong Yidong committed
185 186 187 188 189 190 191 192
*** New option `server-port' specifies the port on which the Emacs
server should listen.
+++
*** New emacsclient argument -q/--quiet suppresses some status messages.
+++
*** New emacsclient argument --frame-parameters can be used to set the
frame parameters of a newly-created graphical frame.
+++
Paul Eggert's avatar
Paul Eggert committed
193
*** If emacsclient shuts down as a result of Emacs signaling an
Chong Yidong's avatar
Chong Yidong committed
194 195 196 197 198 199
error, its exit status is 1.
+++
*** New emacsclient argument --parent-id ID.
This opens a client frame in parent X window ID, via XEmbed, similar
to the --parent-id argument to Emacs.

200 201
** Internationalization changes

202
+++
203
*** Emacs now supports display and editing of bidirectional text.
204

205 206 207 208
Text that includes characters from right-to-left (RTL) scripts, such
as Arabic, Farsi, or Hebrew, is displayed in the correct visual order
as expected by users of those scripts.  This display reordering is a
"Full bidirectionality" class implementation of the Unicode
Eli Zaretskii's avatar
Eli Zaretskii committed
209 210
Bidirectional Algorithm.  Buffers with no RTL text should look exactly
the same as before.
211

Chong Yidong's avatar
Chong Yidong committed
212 213
For more information, see the node "Bidirectional Editing" in the
Emacs Manual.
214

Chong Yidong's avatar
Chong Yidong committed
215 216 217
+++
**** New buffer-local variable `bidi-display-reordering'.
To disable display reordering in any given buffer, change this to nil.
218

Chong Yidong's avatar
Chong Yidong committed
219 220 221 222
+++
**** New buffer-local variable `bidi-paragraph-direction'.
If nil (the default), Emacs determines the base direction of each
paragraph from its text, as specified by the Unicode Bidirectional
223 224
Algorithm.

Chong Yidong's avatar
Chong Yidong committed
225 226 227
Setting this to `right-to-left' or `left-to-right' forces a particular
base direction on each paragraph in the buffer.

228 229 230
Paragraphs whose base direction is right-to-left are displayed
starting at the right margin of the window.

231
+++
Chong Yidong's avatar
Chong Yidong committed
232 233 234
*** Enhanced support for characters with no glyphs in available fonts.
If a character has no glyphs in any of the available fonts, Emacs
normally displays it either as a hexadecimal code in a box or as a
235 236 237 238 239
thin 1-pixel space.  In addition to these two methods, Emacs can
display these characters as empty box, as an acronym, or not display
them at all.  To change how these characters are displayed, customize
the variable `glyphless-char-display-control'.

Chong Yidong's avatar
Chong Yidong committed
240
On character terminals, these methods are used for characters that
241 242
cannot be encoded by the `terminal-coding-system'.

243
---
Chong Yidong's avatar
Chong Yidong committed
244 245
*** New input methods for Farsi: farsi and farsi-translit.

246 247 248 249
+++
*** `nobreak-char-display' now also highlights Unicode hyphen chars
(U+2010 and U+2011).

250 251 252 253 254
---
*** New translation of the Emacs Tutorial in Hebrew is available.
Type `C-u C-h t' to choose it in case your language setup doesn't
automatically select it.

Chong Yidong's avatar
Chong Yidong committed
255
** Improved GTK integration
256
+++
Chong Yidong's avatar
Chong Yidong committed
257
*** GTK scroll-bars are now placed on the right by default.
258
Use `set-scroll-bar-mode' to change this.
259
+++
Chong Yidong's avatar
Chong Yidong committed
260
*** GTK tool bars can have just text, just images or images and text.
261
Customize `tool-bar-style' to choose style.  On a Gnome desktop, the default
Jan Djärv's avatar
Jan Djärv committed
262
is taken from the desktop settings.
263
---
Chong Yidong's avatar
Chong Yidong committed
264
*** GTK tool bars can be placed on the left/right or top/bottom of the frame.
265
The frame-parameter tool-bar-position controls this.  It takes the values
Jan D's avatar
Jan D committed
266
top, left, right or bottom.  The Options => Show/Hide menu has entries
267
for this.
268
+++
269 270
*** The colors for selected text (the `region' face) are taken from
the GTK theme when Emacs is built with GTK.
271
+++
Chong Yidong's avatar
Chong Yidong committed
272 273
*** Emacs uses GTK tooltips by default if built with GTK.  You can turn that
off by customizing x-gtk-use-system-tooltips.
Joakim Verona's avatar
Joakim Verona committed
274

275
+++
276 277 278
** New basic faces `error', `warning', `success' are available to
highlight strings that indicate failure, caution or successful operation.

279
---
280
** Lucid menus and dialogs can display antialiased fonts if Emacs is built
281 282
with Xft.  To change font, use the X resource font, for example:
Emacs.pane.menubar.font:  Courier-12
283

Chong Yidong's avatar
Chong Yidong committed
284
+++
285
** On graphical displays, the mode-line no longer ends in dashes.
286 287
Also, the first dash (which does not indicate anything) is just
displayed as a space.
288

Glenn Morris's avatar
Glenn Morris committed
289
+++
290 291 292
** Basic SELinux support has been added.
This requires Emacs to be linked with libselinux at build time.

Glenn Morris's avatar
Glenn Morris committed
293
+++
294 295 296 297
*** Emacs preserves the SELinux file context when backing up, and
optionally when copying files. To this end, copy-file has an extra
optional argument, and backup-buffer and friends include the SELinux
context in their return values.
298

Glenn Morris's avatar
Glenn Morris committed
299
+++
300 301
*** The new functions file-selinux-context and set-file-selinux-context
get and set the SELinux context of a file.
302
---
303 304 305
*** Tramp offers handlers for file-selinux-context and set-file-selinux-context
for remote machines which support SELinux.

Chong Yidong's avatar
Chong Yidong committed
306
** Changes for exiting Emacs
307
+++
Chong Yidong's avatar
Chong Yidong committed
308 309
*** The function kill-emacs is now run upon receipt of the signals
SIGTERM and SIGHUP, and upon SIGINT in batch mode.
310
+++
Chong Yidong's avatar
Chong Yidong committed
311
*** kill-emacs-hook is now also run in batch mode.
Glenn Morris's avatar
NEWS.  
Glenn Morris committed
312 313
If you have code that adds something to kill-emacs-hook, you should
consider if it is still appropriate to add it in the noninteractive case.
314

Chong Yidong's avatar
Chong Yidong committed
315
** Scrolling changes
316
+++
Chong Yidong's avatar
Chong Yidong committed
317
*** New scrolling commands `scroll-up-command' and `scroll-down-command'
Juanma Barranquero's avatar
Juanma Barranquero committed
318 319
(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
of buffer at first key-press (instead move to top/bottom of buffer)
320 321 322
when `scroll-error-top-bottom' is non-nil.
+++
*** New variable `scroll-error-top-bottom' (see above).
323
+++
Chong Yidong's avatar
Chong Yidong committed
324
*** New scrolling commands `scroll-up-line' and `scroll-down-line'
325
scroll a line instead of full screen.
326
+++
Chong Yidong's avatar
Chong Yidong committed
327
*** New property `scroll-command' should be set on a command's symbol to
Esa Peuha's avatar
Esa Peuha committed
328
define it as a scroll command affected by `scroll-preserve-screen-position'.
329
+++
Chong Yidong's avatar
Chong Yidong committed
330
*** If you customize `scroll-conservatively' to a value greater than 100,
331 332 333 334 335
Emacs will never recenter point in the window when it scrolls due to
cursor motion commands or commands that move point (e.f., `M-g M-g').
Previously, you needed to use `most-positive-fixnum' as the value of
`scroll-conservatively' to achieve the same effect.
---
Chong Yidong's avatar
Chong Yidong committed
336
*** ``Aggressive'' scrolling now honors the scroll margins.
337 338 339 340 341
If you customize `scroll-up-aggressively' or
`scroll-down-aggressively' and move point off the window, Emacs now
scrolls the window so as to avoid positioning point inside the scroll
margin.

342
** Trash changes
343
+++
344 345
*** `delete-by-moving-to-trash' now only affects commands that specify
trashing.  This avoids inadvertently trashing temporary files.
346
+++
347 348 349
*** Calling `delete-file' or `delete-directory' with a prefix argument
now forces true deletion, regardless of `delete-by-moving-to-trash'.

Glenn Morris's avatar
Glenn Morris committed
350
+++
351 352 353
** New option `list-colors-sort' defines the color sort order
for `list-colors-display'.

354 355
** An Emacs Lisp package manager is now included.
This is a convenient way to download and install additional packages,
356
from a package repository at http://elpa.gnu.org.
357
+++
358 359
*** `M-x list-packages' shows a list of packages, which can be
selected for installation.
360
+++
361
*** New command `describe-package', bound to `C-h P'.
362
+++
363 364 365 366 367
*** By default, all installed packages are loaded and activated
automatically when Emacs starts up.  To disable this, set
`package-enable-at-startup' to nil.  To change which packages are
loaded, customize `package-load-list'.

368
** Custom Themes
369
+++
370
*** `M-x customize-themes' lists Custom themes which can be enabled.
371
+++
372 373 374 375
*** New option `custom-theme-load-path' is the load path for themes.
Emacs no longer looks for custom themes in `load-path'.  The default
is to search in `custom-theme-directory', followed by a built-in theme
directory named "themes/" in `data-directory'.
376
+++
377 378 379 380
*** New option `custom-safe-themes' records known-safe theme files.
If a theme is not in this list, Emacs queries before loading it, and
offers to save the theme to `custom-safe-themes' automatically.  By
default, all themes included in Emacs are treated as safe.
381

382 383 384
** The user option `remote-file-name-inhibit-cache' controls whether
the remote file-name cache is used for read access.

Chong Yidong's avatar
Chong Yidong committed
385
** File- and directory-local variable changes
386
+++
Chong Yidong's avatar
Chong Yidong committed
387 388 389 390
*** You can stop directory local vars from applying to subdirectories.
Add an element (subdirs . nil) to the alist portion of any variables
settings to indicate that the section should not apply to
subdirectories.
391
+++
Chong Yidong's avatar
Chong Yidong committed
392 393 394 395 396 397 398 399
*** Directory local variables can apply to some file-less buffers.
Affected modes include dired, vc-dir, and log-edit.  For example,
adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
turn on `whitespace-mode' for *vc-diff* buffers.  Modes should call
`hack-dir-local-variables-non-file-buffer' to support this.
+++
*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
Instead, use "eval: (minor-mode 1)".
Glenn Morris's avatar
Glenn Morris committed
400

401
+++
Glenn Morris's avatar
Glenn Morris committed
402 403 404 405 406 407
*** The variable `inhibit-first-line-modes-regexps' has been renamed
to `inhibit-local-variables-regexps'.  As the name suggests, it now
applies to ALL file local variables, not just -*- mode ones.
The associated `inhibit-first-line-modes-suffixes' has been renamed
in the corresponding way.

408
+++
409 410
** The variable `focus-follows-mouse' now always defaults to nil.

411 412
** New primitive `secure-hash' that supports many secure hash algorithms
including md5, sha-1 and sha-2 (sha-224, sha-256, sha-384 and sha-512).
413 414 415
The elisp implementation sha1.el is removed. Feature sha1 is provided
by default.

416
** Menu-bar changes
417
---
418 419 420
*** `menu-bar-select-buffer-function' lets you choose another operation
instead of `switch-to-buffer' when selecting an item in the Buffers menu.

421 422 423 424 425 426 427
** Window changes

+++
*** Resizing an Emacs frame now preserves proportional window sizes,
modulo restrictions like window minimum sizes and fixed-size windows.

*** The behavior of `display-buffer' is now customizable in detail.
428
+++
429 430 431 432 433 434 435
**** New option `display-buffer-base-action' specifies a list of
user-determined display "actions" (functions and optional arguments
for choosing the displaying window).

This takes precedence over the default display action, which is
specified by `display-buffer-fallback-action'.

436
+++
437 438 439 440
**** New option `display-buffer-alist' maps buffer name regexps to
display actions, taking precedence over `display-buffer-base-action'.

+++
441 442 443 444
*** New option `window-combination-limit'.
The new option `window-combination-limit' allows to return the space
obtained for resizing or creating a window more reliably to the window
from which such space was obtained.
445 446

+++
447 448 449 450 451
*** New option `window-combination-resize'.
The new option `window-combination-resize' allows to split a window that
otherwise cannot be split because it's too small by stealing space from
other windows in the same combination.  Subsequent resizing or deletion
of the window will resize all windows in the same combination as well.
452 453 454

+++
*** New commands `maximize-window' and `minimize-window'.
Paul Eggert's avatar
Paul Eggert committed
455
These maximize and minimize the size of a window within its frame.
456 457 458 459 460 461

+++
*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
These functions allow to navigate through the live buffers that have
been shown in a specific window.

Chong Yidong's avatar
Chong Yidong committed
462 463 464 465
** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
This is handy for minibuffer-only frames, and is also used for the "mouse-1
pops up *Messages*" feature, which can now easily be changed.

466

467
* Editing Changes in Emacs 24.1
468

469 470 471 472
** Search changes
+++
*** C-y in Isearch is now bound to isearch-yank-kill, instead of
isearch-yank-line.
473
+++
474 475
*** M-y in Isearch is now bound to isearch-yank-pop, instead of
isearch-yank-kill.
476 477 478
+++
*** M-s C-e in Isearch is now bound to isearch-yank-line.

Glenn Morris's avatar
Glenn Morris committed
479
+++
480 481 482 483
** New commands `count-words-region' and `count-words'.

*** `count-lines-region' is now an alias for `count-words-region',
bound to M-=, which shows the number of lines, words, and characters.
Glenn Morris's avatar
Glenn Morris committed
484

485
+++
486 487
** The default value of `backup-by-copying-when-mismatch' is now t.

Chong Yidong's avatar
Chong Yidong committed
488
+++
489
** The command `just-one-space' (M-SPC), if given a negative argument,
490 491
also deletes newlines around point.

492
** Deletion changes
493
+++
494
*** New option `delete-active-region'.
495 496 497
If non-nil, [delete] and DEL delete the region if it is active and no
prefix argument is given.  If set to `kill', these commands kill
instead.
498
+++
499
*** New command `delete-forward-char', bound to [delete].
500 501
This is meant for interactive use, and obeys `delete-active-region'.
The command `delete-char' does not obey `delete-active-region'.
502
---
503 504 505 506
*** `delete-backward-char' is now a Lisp function.
Apart from obeying `delete-active-region', its behavior is unchanged.
However, the byte compiler now warns if it is called from Lisp; you
should use delete-char with a negative argument instead.
507
---
508 509
*** The option `mouse-region-delete-keys' has been deleted.

510 511
** Selection changes.

512 513 514 515 516 517 518 519
The default handling of clipboard and primary selections was changed
to conform with modern X applications.  In short, most commands for
killing and yanking text now use the clipboard, while mouse commands
use the primary selection.

In the following, we provide a list of these changes, followed by a
list of steps to get the old behavior back if you prefer that.

520
+++
521 522
*** `select-active-regions' now defaults to t.
Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
523
the kill ring.  The selected text is put in the primary selection, if
524 525
the system possesses a separate primary selection facility (e.g. X).

526
+++
527 528 529 530 531 532
**** `select-active-regions' also accepts a new value, `only'.
This means to only set the primary selection for temporarily active
regions (usually made by mouse-dragging or shift-selection);
"ordinary" active regions, such as those made with C-SPC followed by
point motion, do not alter the primary selection.

533 534 535 536
---
**** `mouse-drag-copy-region' now defaults to nil.

+++
537 538 539 540
*** mouse-2 is now bound to `mouse-yank-primary'.
This pastes from the primary selection, ignoring the kill-ring.
Previously, mouse-2 was bound to `mouse-yank-at-click'.

541
+++
542
*** `x-select-enable-clipboard' now defaults to t on all platforms.
543
+++
544 545 546 547
*** `x-select-enable-primary' now defaults to nil.
Thus, commands that kill text or copy it to the kill-ring (such as
M-w, C-w, and C-k) also use the clipboard---not the primary selection.

548
---
549 550 551
**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
exactly equivalent to, respectively M-w, C-w, and C-y.

552
---
553 554 555 556
**** Note that on MS-Windows, `x-select-enable-clipboard' was already
non-nil by default, as Windows does not support the primary selection
between applications.

557
---
558
*** To return to the previous behavior, do the following:
559
**** Change `select-active-regions' to nil.
560 561 562 563
**** Change `mouse-drag-copy-region' to t.
**** Change `x-select-enable-primary' to t (on X only).
**** Change `x-select-enable-clipboard' to nil.
**** Bind `mouse-yank-at-click' to mouse-2.
564

565
+++
566 567
*** Support for X cut buffers has been removed.

568 569
*** X clipboard managers are now supported.
To inhibit this, change `x-select-enable-clipboard-manager' to nil.
570

571
+++
572
** New command `rectangle-number-lines', bound to `C-x r N', numbers
573
the lines in the current rectangle.  With a prefix argument, this
574 575
prompts for a number to count from and for a format string.

576
+++
Juri Linkov's avatar
Juri Linkov committed
577
** The default value of redisplay-dont-pause is now t
578 579 580 581 582
This makes Emacs feel more responsive to editing commands that arrive
at high rate, e.g. if you lean on some key, because stopping redisplay
in the middle (when this variable is nil) forces more expensive
updates later on, and Emacs appears to be unable to keep up.

583 584 585 586 587 588 589
+++
** The behavior of <TAB> for active regions in Text mode has changed.
In Text and related modes, typing <TAB> (`indent-for-tab-command')
when the region is active causes Emacs to indent all the lines in the
region, aligning them with the line previous to the first line in the
region (or with the left margin if there is no previous line).

590

591
* Changes in Specialized Modes and Packages in Emacs 24.1
592

593
+++
Chong Yidong's avatar
Chong Yidong committed
594
** Archive Mode has basic support for browsing and updating 7z archives.
595

596
---
597 598
** BibTeX mode

599
*** BibTeX mode now supports biblatex.
Chong Yidong's avatar
Chong Yidong committed
600 601
Use the variable bibtex-dialect to select support for different BibTeX
dialects.  bibtex-entry-field-alist is now an obsolete alias for
602 603
bibtex-BibTeX-entry-alist.

604 605
*** New command `bibtex-search-entries' bound to C-c C-a.

606 607
*** New `bibtex-entry-format' option `sort-fields', disabled by default.

608 609
*** New variable `bibtex-search-entry-globally'.

Glenn Morris's avatar
Glenn Morris committed
610 611
** Calendar, Diary, and Appt

Glenn Morris's avatar
Glenn Morris committed
612 613 614 615
+++
*** Diary entries can contain non-printing `comments'.
See the variable `diary-comment-start'.

616 617 618 619
+++
*** Appointments can specify their individual warning times.
See the variable `appt-warning-time-regexp'.

620 621 622 623 624
---
*** The function specified by `appt-disp-window-function' may be passed
lists of arguments if multiple appointments are due at similar times.
If you are using a custom function for this, you should update it.

625
+++
626 627
*** New function `diary-hebrew-birthday'.

628 629 630 631
---
*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
may no longer be nil, but must all be strings.

Glenn Morris's avatar
Glenn Morris committed
632 633 634 635 636 637 638 639 640 641 642 643 644
---
*** The obsolete (since Emacs 22.1) method of enabling the appt package
by adding appt-make-list to diary-hook has been removed.  Use appt-activate.

---
*** Some appt variables (obsolete since Emacs 22.1) have been removed:
appt-issue-message (use the function appt-activate)
appt-visible/appt-msg-window (use the variable appt-display-format)

---
*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
view-diary-entries, list-diary-entries, show-all-diary-entries

Glenn Morris's avatar
Glenn Morris committed
645 646 647 648 649 650 651 652 653
** Browse-url

+++
*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.

---
*** The default browser used by the package is now the "xdg-open" program,
on platforms that support it.  This calls your desktop's preferred browser.

Chong Yidong's avatar
Chong Yidong committed
654 655 656 657 658 659 660
** CC Mode (C, C++, etc.)

*** New feature to "guess" the style in an existing buffer.

** comint and modes derived from it use the generic completion code.

** Compilation mode
661
---
Chong Yidong's avatar
Chong Yidong committed
662 663 664 665 666 667 668
*** Compilation mode can be used without font-lock-mode.
`compilation-parse-errors-function' is now obsolete.

*** `compilation-filter-start' is let-bound to the start of the text
inserted by the compilation filter function, when calling
compilation-filter-hook.

669 670 671 672
*** `compilation-error-screen-columns' and `compilation-first-column'
are obeyed in the editing buffer.  So programming language modes can
set them, whereas previously only the value in the *compilation* buffer
was used.
673

674 675
** Customize

676
+++
677 678
*** Customize buffers now contain a search field.
The search is performed using `customize-apropos'.
679
To turn off the search field, set custom-search-field to nil.
680

681
+++
682 683 684
*** Custom options now start out hidden if at their default values.
Use the arrow to the left of the option name to toggle visibility.

Glenn Morris's avatar
Glenn Morris committed
685
---
686 687
*** custom-buffer-sort-alphabetically now defaults to t.

688
+++
689 690 691
*** The color widget now has a "Choose" button, which allows you to
choose a color via list-colors-display.

Chong Yidong's avatar
Chong Yidong committed
692 693
** D-Bus

Glenn Morris's avatar
Glenn Morris committed
694 695
*** It is now possible to access buses other than the default system
or session bus.
Chong Yidong's avatar
Chong Yidong committed
696

Glenn Morris's avatar
Glenn Morris committed
697 698
*** The dbus-register-method and dbus-register-property functions 
optionally do not register names.
Chong Yidong's avatar
Chong Yidong committed
699

Glenn Morris's avatar
Glenn Morris committed
700
*** The new function dbus-register-service registers a known service name
Chong Yidong's avatar
Chong Yidong committed
701 702
on a D-Bus without simultaneously registering a property or a method.

703
** Dired-x
704
---
705 706 707
*** dired-jump and dired-jump-other-window called with a prefix argument
read a file name from the minibuffer instead of using buffer-file-name.

708 709 710
+++
*** The `dired local variables' feature provided by Dired-x is obsolete.
The standard directory local variables feature replaces it.
711

Chong Yidong's avatar
Chong Yidong committed
712
** ERC changes
Michael Mauger's avatar
Michael Mauger committed
713

714 715 716
---
*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
controlling attempts to autojoin a channel.
Chong Yidong's avatar
Chong Yidong committed
717 718 719 720 721

*** New variable `erc-coding-system-precedence': If we use `undecided'
as the server coding system, this variable will then be consulted.
The default is to decode strings that can be decoded as utf-8 as
utf-8, and do the normal `undecided' decoding for the rest.
Michael Mauger's avatar
Michael Mauger committed
722

Chong Yidong's avatar
Chong Yidong committed
723
** Eshell changes
Michael Mauger's avatar
Michael Mauger committed
724

Glenn Morris's avatar
Glenn Morris committed
725 726 727 728
---
*** The default value of `eshell-directory-name' has changed
to be an "eshell" directory in `user-emacs-directory'.
The old "~/.eshell/" directory is still used if it exists, though.
Chong Yidong's avatar
Chong Yidong committed
729 730

** gdb-mi
Chong Yidong's avatar
Chong Yidong committed
731
+++
Glenn Morris's avatar
Glenn Morris committed
732 733 734
*** The GDB User Interface has been migrated to GDB Machine Interface.
It now supports multithread non-stop debugging and simultaneous
debugging of several threads.
Michael Mauger's avatar
Michael Mauger committed
735

736 737
** Image mode

Glenn Morris's avatar
Glenn Morris committed
738 739 740
+++
*** RET (`image-toggle-animation') toggles animation, if applicable.
Animation plays once, unless the option `image-animate-loop' is non-nil.
741

Chong Yidong's avatar
Chong Yidong committed
742
** Info
743

744 745 746 747 748 749
+++
*** New command `info-display-manual' displays a named Info manual.
If that manual is already visited in some Info buffer, it displays
that buffer.  (This is handy if you have many manuals in many *info*
buffers, and don't remember the name of the buffer visiting the manual
you want to consult.)  Otherwise, it loads and displays the manual.
750

Chong Yidong's avatar
Chong Yidong committed
751
+++
752 753 754 755 756 757
*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
This is for compatibility with the stand-alone Info reader program,
and also because `Info-edit' is a rarely used command that is disabled
by default.

+++
758
** MH-E has been upgraded to MH-E version 8.3.1.
Chong Yidong's avatar
Chong Yidong committed
759
See MH-E-NEWS for details.
760

Glenn Morris's avatar
Glenn Morris committed
761
---
Chong Yidong's avatar
Chong Yidong committed
762
** Modula-2 mode provides auto-indentation.
763

Glenn Morris's avatar
Glenn Morris committed
764
---
Chong Yidong's avatar
Chong Yidong committed
765
** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
766

Glenn Morris's avatar
Glenn Morris committed
767
---
Chong Yidong's avatar
Chong Yidong committed
768 769 770 771 772 773
** Prolog mode has been completely revamped, with lots of additional
functionality such as more intelligent indentation, electricity, support for
more variants, including Mercury, and a lot more.

** Rmail

774
+++
Chong Yidong's avatar
Chong Yidong committed
775 776 777
*** The command `rmail-epa-decrypt' decrypts OpenPGP data
in the Rmail incoming message.

778 779 780 781 782
---
*** The variable `rmail-message-filter' no longer has any effect.
This change was made in Emacs 23.1 but was not advertised at the time.
Try using `rmail-show-message-hook' instead.

783
** Shell mode
Chong Yidong's avatar
Chong Yidong committed
784
+++
785
*** Shell mode uses pcomplete rules, with the standard completion UI.
Chong Yidong's avatar
Chong Yidong committed
786
+++
787 788 789 790
*** The `shell' command prompts for the shell path name if the default
directory is a remote file name and neither the environment variable
$ESHELL nor the variable `explicit-shell-file-name' is set.

791
---
792
** SQL mode
Chong Yidong's avatar
Chong Yidong committed
793

794 795 796
---
*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
and `sql-oracle-scan-on'.
Chong Yidong's avatar
Chong Yidong committed
797

798 799 800 801 802
---
*** New custom variables control prompting for login parameters.
Each supported product has a custom variable `sql-*-login-params',
which is a list of the parameters to be prompted for before a
connection is established.
Chong Yidong's avatar
Chong Yidong committed
803

804
---
Chong Yidong's avatar
Chong Yidong committed
805
*** The command `sql-product-interactive' now takes a prefix argument,
806
which causes it to prompt for an SQL product.
Chong Yidong's avatar
Chong Yidong committed
807

808 809
---
*** Product-specific SQL interactive commands now take prefix arguments.
Chong Yidong's avatar
Chong Yidong committed
810 811 812 813
These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
given a prefix argument, prompt for a name for the SQL interactive
buffer.  This reduces the need for calling `sql-rename-buffer'.

814
---
Chong Yidong's avatar
Chong Yidong committed
815 816 817 818
*** SQL interactive modes suppress command continuation prompts, and
replace tabs with spaces.  The first change impacts multiple line SQL
statements entered with C-j between each line, statements yanked into
the buffer and statements sent with `sql-send-*' functions.  The
819 820
second prevents the MySQL and Postgres interpreters from listing
object name completions when sent text via `sql-send-*' functions.
Chong Yidong's avatar
Chong Yidong committed
821

822
---
Chong Yidong's avatar
Chong Yidong committed
823 824 825
*** New command `sql-connect' starts a predefined SQLi session,
using the login parameters from `sql-connection-alist'.

826
---
Chong Yidong's avatar
Chong Yidong committed
827 828 829 830
*** New "Save Connection" menu item in SQLi buffers.
This gathers the login params specified for the SQLi session, if it
was not started by a connection, and saves them as a new connection.

831 832 833
---
*** New commands for listing database objects and details:
sql-list-all and sql-list-table.
Chong Yidong's avatar
Chong Yidong committed
834

835
---
Chong Yidong's avatar
Chong Yidong committed
836 837 838 839
*** An API for manipulating SQL product definitions has been added.

** TeX modes

840
+++
Chong Yidong's avatar
Chong Yidong committed
841
*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
842

843
** Tramp
844
---
845
*** There exists a new inline access method "ksu" (kerberized su).
846
---
847
*** The following access methods are discontinued: "ssh1_old",
848
"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
849
---
850 851 852
*** The option `ange-ftp-binary-file-name-regexp' has changed its
default value to "".

Chong Yidong's avatar
Chong Yidong committed
853 854
** `url-queue-retrieve' downloads web pages asynchronously, but allow
controlling the degree of parallelism.
855

856 857
** VC and related modes

858
+++
859
*** Support for pulling on distributed version control systems.
Glenn Morris's avatar
Glenn Morris committed
860 861 862 863
`C-x v +' (`vc-pull') runs a "pull" operation, if it is supported
(currently with Bzr, Git, and Mercurial), to update the current branch
and working tree.  A prefix argument means to prompt the user for
specifics, e.g. a pull location.
864

Glenn Morris's avatar
Glenn Morris committed
865 866
---
*** `vc-update' is now an alias for `vc-pull'.
867

868
+++
869
*** Support for merging on distributed version control systems.
Glenn Morris's avatar
Glenn Morris committed
870 871 872 873
The vc-merge command now runs a "merge" operation, if it is supported
(currently with Bzr, Git, and Mercurial), to merge changes from
another branch into the current one.  It prompts for specifics, e.g. a
merge source.
874

875
+++
876
*** New option `vc-revert-show-diff' controls whether `vc-revert'