NEWS 51.5 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

3
Copyright (C) 2010-2011  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

27 28 29 30 31 32 33
** Configure links against libselinux if it is found.
You can disable this by using --without-selinux.

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

Glenn Morris's avatar
Glenn Morris committed
34 35 36 37 38 39
---
** 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.

40
---
41
** Emacs can be compiled against Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
42 43 44 45
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.

46
---
47 48
** There is a new configure option --enable-use-lisp-union-type.
This is only useful for Emacs developers to debug certain types of bugs.
Esa Peuha's avatar
Esa Peuha committed
49
This is not a new feature; only the configure flag is new.
50

51
---
Paul Eggert's avatar
Paul Eggert committed
52 53
** There is a new configure option --with-wide-int.
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
54 55
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
56

57
---
Juanma Barranquero's avatar
Juanma Barranquero committed
58
** New translation of the Emacs Tutorial in Hebrew is available.
59 60 61
Type `C-u C-h t' to choose it in case your language setup doesn't
automatically select it.

62
** Emacs can be compiled with ImageMagick support.
Chong Yidong's avatar
Chong Yidong committed
63
Emacs links to ImageMagick if version 6.2.8 or newer of the library is
64 65
present at build time.  To inhibit ImageMagick, use the configure
option `--without-imagemagick' .
Chong Yidong's avatar
Chong Yidong committed
66

67
---
Chong Yidong's avatar
Chong Yidong committed
68 69 70 71 72 73 74
** 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.

75

76
* Startup Changes in Emacs 24.1
77

78
---
79
** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
Glenn Morris's avatar
Glenn Morris committed
80 81
command line arguments, and the EMACS_UNIBYTE environment variable, no
longer have any effect.  (They were declared obsolete in Emacs 23.)
82

83
+++
84 85 86
** New command line option `--no-site-lisp' removes site-lisp directories
from load-path.  -Q now implies this.

87
---
88 89
** On Windows, Emacs now warns when the obsolete _emacs init file is used,
and also when HOME is set to C:\ by default.
90

91

92
* Changes in Emacs 24.1
93

94
+++
Chong Yidong's avatar
Chong Yidong committed
95
** auto-mode-case-fold is now enabled by default.
96

97
** Completion
98

99 100
*** shell-mode uses pcomplete rules, with the standard completion UI.

101 102 103 104
*** Many packages have been changed to use `completion-at-point'
rather than their own completion code.

*** `completion-at-point' now handles tags and semantic completion.
105
---
106 107
*** Completion in a non-minibuffer now tries to detect the end of completion
and pops down the *Completions* buffer accordingly.
108
+++
109
*** Completion can cycle, depending on completion-cycle-threshold.
110
+++
111
*** New completion style `substring'.
112
+++
113
*** Completion style can be set per-category `completion-category-overrides'.
114
+++
115 116
*** Completion of buffers now uses substring completion by default.

117 118
** Mail changes

Chong Yidong's avatar
Chong Yidong committed
119 120 121 122 123
The default of `send-mail-function' is now `sendmail-query-once',
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).
124

Chong Yidong's avatar
Chong Yidong committed
125
*** smtpmail changes
126

Chong Yidong's avatar
Chong Yidong committed
127 128 129
**** smtpmail now uses encrypted connections (via STARTTLS) if the
mail server supports them.  It also uses the auth-source framework for
getting credentials.
130

Chong Yidong's avatar
Chong Yidong committed
131 132 133 134 135
**** 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
136 137 138 139
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.)
140

Chong Yidong's avatar
Chong Yidong committed
141 142
You can also manually copy the credentials to your ~/.authinfo file.
For example, if you had
143

Chong Yidong's avatar
Chong Yidong committed
144 145
  (setq smtpmail-auth-credentials
        '(("mail.example.org" 25 "jim" "s!cret")))
146 147 148

then the equivalent line in ~/.authinfo would be

Chong Yidong's avatar
Chong Yidong committed
149 150 151
  machine mail.example.org port 25 login jim password s!cret

**** The variable `smtpmail-starttls-credentials' has been removed.
152

Juanma Barranquero's avatar
Juanma Barranquero committed
153
If you had that set, then you need to put
154

Chong Yidong's avatar
Chong Yidong committed
155
  machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
156 157 158

in your ~/.authinfo file instead.

159 160 161 162 163 164 165 166 167
*** sendmail changes
+++
You can now add MIME attachments to outgoing messages with the new
command `mail-add-attachment'.

---
The command `mail-attach-file' was renamed to `mail-insert-file'; the
old name is now an obsolete alias to the new name.

Chong Yidong's avatar
Chong Yidong committed
168
** Emacs server and client changes
169
+++
Chong Yidong's avatar
Chong Yidong committed
170 171 172 173 174 175 176 177
*** 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
178
*** If emacsclient shuts down as a result of Emacs signaling an
Chong Yidong's avatar
Chong Yidong committed
179 180 181 182 183 184
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.

185 186
** Internationalization changes

187
+++
188
*** Emacs now supports display and editing of bidirectional text.
189

190 191 192 193
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
194 195
Bidirectional Algorithm.  Buffers with no RTL text should look exactly
the same as before.
196

Chong Yidong's avatar
Chong Yidong committed
197 198
For more information, see the node "Bidirectional Editing" in the
Emacs Manual.
199

Chong Yidong's avatar
Chong Yidong committed
200 201 202
+++
**** New buffer-local variable `bidi-display-reordering'.
To disable display reordering in any given buffer, change this to nil.
203

Chong Yidong's avatar
Chong Yidong committed
204 205 206 207
+++
**** 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
208 209
Algorithm.

Chong Yidong's avatar
Chong Yidong committed
210 211 212
Setting this to `right-to-left' or `left-to-right' forces a particular
base direction on each paragraph in the buffer.

213 214 215
Paragraphs whose base direction is right-to-left are displayed
starting at the right margin of the window.

216
+++
Chong Yidong's avatar
Chong Yidong committed
217 218 219
*** 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
220 221 222 223 224
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
225
On character terminals, these methods are used for characters that
226 227
cannot be encoded by the `terminal-coding-system'.

228
---
Chong Yidong's avatar
Chong Yidong committed
229 230
*** New input methods for Farsi: farsi and farsi-translit.

231 232 233 234
+++
*** `nobreak-char-display' now also highlights Unicode hyphen chars
(U+2010 and U+2011).

Chong Yidong's avatar
Chong Yidong committed
235
** Improved GTK integration
236
+++
Chong Yidong's avatar
Chong Yidong committed
237
*** GTK scroll-bars are now placed on the right by default.
238
Use `set-scroll-bar-mode' to change this.
239
+++
Chong Yidong's avatar
Chong Yidong committed
240
*** GTK tool bars can have just text, just images or images and text.
241
Customize `tool-bar-style' to choose style.  On a Gnome desktop, the default
Jan Djärv's avatar
Jan Djärv committed
242
is taken from the desktop settings.
243
---
Chong Yidong's avatar
Chong Yidong committed
244
*** GTK tool bars can be placed on the left/right or top/bottom of the frame.
245
The frame-parameter tool-bar-position controls this.  It takes the values
Jan D's avatar
Jan D committed
246
top, left, right or bottom.  The Options => Show/Hide menu has entries
247
for this.
248
+++
249 250
*** The colors for selected text (the `region' face) are taken from
the GTK theme when Emacs is built with GTK.
251
+++
Chong Yidong's avatar
Chong Yidong committed
252 253
*** 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
254

255
+++
256 257 258
** New basic faces `error', `warning', `success' are available to
highlight strings that indicate failure, caution or successful operation.

259
---
260
** Lucid menus and dialogs can display antialiased fonts if Emacs is built
261 262
with Xft.  To change font, use the X resource font, for example:
Emacs.pane.menubar.font:  Courier-12
263

Chong Yidong's avatar
Chong Yidong committed
264
+++
265
** On graphical displays, the mode-line no longer ends in dashes.
266 267
Also, the first dash (which does not indicate anything) is just
displayed as a space.
268

269 270 271
** Basic SELinux support has been added.
This requires Emacs to be linked with libselinux at build time.

272 273 274 275
*** 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.
276 277 278

*** The new functions file-selinux-context and set-file-selinux-context
get and set the SELinux context of a file.
279
---
280 281 282
*** 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
283
** Changes for exiting Emacs
284
+++
Chong Yidong's avatar
Chong Yidong committed
285 286
*** The function kill-emacs is now run upon receipt of the signals
SIGTERM and SIGHUP, and upon SIGINT in batch mode.
287
+++
Chong Yidong's avatar
Chong Yidong committed
288
*** kill-emacs-hook is now also run in batch mode.
Glenn Morris's avatar
NEWS.  
Glenn Morris committed
289 290
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.
291

Chong Yidong's avatar
Chong Yidong committed
292
** Scrolling changes
293
+++
Chong Yidong's avatar
Chong Yidong committed
294
*** New scrolling commands `scroll-up-command' and `scroll-down-command'
Juanma Barranquero's avatar
Juanma Barranquero committed
295 296
(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)
297 298 299
when `scroll-error-top-bottom' is non-nil.
+++
*** New variable `scroll-error-top-bottom' (see above).
300
+++
Chong Yidong's avatar
Chong Yidong committed
301
*** New scrolling commands `scroll-up-line' and `scroll-down-line'
302
scroll a line instead of full screen.
303
+++
Chong Yidong's avatar
Chong Yidong committed
304
*** New property `scroll-command' should be set on a command's symbol to
Esa Peuha's avatar
Esa Peuha committed
305
define it as a scroll command affected by `scroll-preserve-screen-position'.
306
+++
Chong Yidong's avatar
Chong Yidong committed
307
*** If you customize `scroll-conservatively' to a value greater than 100,
308 309 310 311 312
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
313
*** ``Aggressive'' scrolling now honors the scroll margins.
314 315 316 317 318
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.

319
** Trash changes
320
+++
321 322
*** `delete-by-moving-to-trash' now only affects commands that specify
trashing.  This avoids inadvertently trashing temporary files.
323
+++
324 325 326
*** Calling `delete-file' or `delete-directory' with a prefix argument
now forces true deletion, regardless of `delete-by-moving-to-trash'.

327 328 329
** New option `list-colors-sort' defines the color sort order
for `list-colors-display'.

330 331
** An Emacs Lisp package manager is now included.
This is a convenient way to download and install additional packages,
332
from a package repository at http://elpa.gnu.org.
333
+++
334 335
*** `M-x list-packages' shows a list of packages, which can be
selected for installation.
336
+++
337
*** New command `describe-package', bound to `C-h P'.
338
+++
339 340 341 342 343
*** 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'.

344 345 346 347
** Custom Themes

*** `M-x customize-themes' lists Custom themes which can be enabled.

348 349 350 351 352
*** 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'.

353 354 355 356
*** 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.
357

358 359 360
** 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
361
** File- and directory-local variable changes
362
+++
Chong Yidong's avatar
Chong Yidong committed
363 364 365 366
*** 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.
367

Chong Yidong's avatar
Chong Yidong committed
368 369 370 371 372 373 374 375
*** 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
376

377
+++
378 379
** The variable `focus-follows-mouse' now always defaults to nil.

380 381
** 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).
382 383 384
The elisp implementation sha1.el is removed. Feature sha1 is provided
by default.

385
** Menu-bar changes
386
---
387 388 389
*** `menu-bar-select-buffer-function' lets you choose another operation
instead of `switch-to-buffer' when selecting an item in the Buffers menu.

390 391 392 393 394 395 396
** 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.
397
+++
398 399 400 401 402 403 404
**** 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'.

405
+++
406 407 408 409
**** New option `display-buffer-alist' maps buffer name regexps to
display actions, taking precedence over `display-buffer-base-action'.

+++
410 411 412 413
*** 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.
414 415

+++
416 417 418 419 420
*** 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.
421 422 423

+++
*** New commands `maximize-window' and `minimize-window'.
Paul Eggert's avatar
Paul Eggert committed
424
These maximize and minimize the size of a window within its frame.
425 426 427 428 429 430

+++
*** 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.

431 432 433 434 435
+++
*** New functions `window-state-get' and `window-state-put'.
These functions allow to save and restore the state of an arbitrary
frame or window as an Elisp object.

Chong Yidong's avatar
Chong Yidong committed
436 437 438 439
** 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.

440

441
* Editing Changes in Emacs 24.1
442

443 444 445 446
** Search changes
+++
*** C-y in Isearch is now bound to isearch-yank-kill, instead of
isearch-yank-line.
447
+++
448 449
*** M-y in Isearch is now bound to isearch-yank-pop, instead of
isearch-yank-kill.
450 451 452
+++
*** M-s C-e in Isearch is now bound to isearch-yank-line.

Glenn Morris's avatar
Glenn Morris committed
453
+++
454 455 456 457
** 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
458

459
+++
460 461
** The default value of `backup-by-copying-when-mismatch' is now t.

Chong Yidong's avatar
Chong Yidong committed
462
+++
463
** The command `just-one-space' (M-SPC), if given a negative argument,
464 465
also deletes newlines around point.

466
** Deletion changes
467
+++
468
*** New option `delete-active-region'.
469 470 471
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.
472
+++
473
*** New command `delete-forward-char', bound to [delete].
474 475
This is meant for interactive use, and obeys `delete-active-region'.
The command `delete-char' does not obey `delete-active-region'.
476
---
477 478 479 480
*** `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.
481
---
482 483
*** The option `mouse-region-delete-keys' has been deleted.

484 485
** Selection changes.

486 487 488 489 490 491 492 493
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.

494
+++
495 496
*** `select-active-regions' now defaults to t.
Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
497
the kill ring.  The selected text is put in the primary selection, if
498 499
the system possesses a separate primary selection facility (e.g. X).

500
+++
501 502 503 504 505 506
**** `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.

507 508 509 510
---
**** `mouse-drag-copy-region' now defaults to nil.

+++
511 512 513 514
*** 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'.

515
+++
516
*** `x-select-enable-clipboard' now defaults to t on all platforms.
517
+++
518 519 520 521
*** `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.

522
---
523 524 525
**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
exactly equivalent to, respectively M-w, C-w, and C-y.

526
---
527 528 529 530
**** 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.

531
---
532
*** To return to the previous behavior, do the following:
533
**** Change `select-active-regions' to nil.
534 535 536 537
**** 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.
538

539
+++
540 541
*** Support for X cut buffers has been removed.

542 543
*** X clipboard managers are now supported.
To inhibit this, change `x-select-enable-clipboard-manager' to nil.
544

545
+++
546
** New command `rectangle-number-lines', bound to `C-x r N', numbers
547
the lines in the current rectangle.  With a prefix argument, this
548 549
prompts for a number to count from and for a format string.

550 551 552 553 554 555 556
+++
** The default value of redisplay-dont-change is now t
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.

557 558 559 560 561 562 563
+++
** 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).

564

565
* Changes in Specialized Modes and Packages in Emacs 24.1
566

567
+++
Chong Yidong's avatar
Chong Yidong committed
568
** Archive Mode has basic support for browsing and updating 7z archives.
569

Chong Yidong's avatar
Chong Yidong committed
570 571
** browse-url has a new variable `browse-url-mailto-function'
specifies how mailto: URLs are handled.  The default is `browse-url-mail'.
572

573
---
574 575
** BibTeX mode

576
*** BibTeX mode now supports biblatex.
Chong Yidong's avatar
Chong Yidong committed
577 578
Use the variable bibtex-dialect to select support for different BibTeX
dialects.  bibtex-entry-field-alist is now an obsolete alias for
579 580
bibtex-BibTeX-entry-alist.

581 582
*** New command `bibtex-search-entries' bound to C-c C-a.

583 584
*** New `bibtex-entry-format' option `sort-fields', disabled by default.

585 586
*** New variable `bibtex-search-entry-globally'.

Glenn Morris's avatar
Glenn Morris committed
587 588
** Calendar, Diary, and Appt

Glenn Morris's avatar
Glenn Morris committed
589 590 591 592
+++
*** Diary entries can contain non-printing `comments'.
See the variable `diary-comment-start'.

593 594 595 596
+++
*** Appointments can specify their individual warning times.
See the variable `appt-warning-time-regexp'.

597 598 599 600 601
---
*** 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.

602
+++
603 604
*** New function `diary-hebrew-birthday'.

605 606 607 608
---
*** 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
609 610 611 612 613 614 615 616 617 618 619 620 621
---
*** 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

Chong Yidong's avatar
Chong Yidong committed
622 623 624 625 626 627 628
** 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
629
---
Chong Yidong's avatar
Chong Yidong committed
630 631 632 633 634 635 636
*** 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.

637 638 639 640
*** `compilation-error-screen-columns' is obeyed in the editing buffer.
So programming language modes can set it, whereas previously only the value
in the *compilation* buffer was used.

641 642 643 644
** Customize

*** Customize buffers now contain a search field.
The search is performed using `customize-apropos'.
645
To turn off the search field, set custom-search-field to nil.
646 647 648 649 650 651 652 653 654

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

*** custom-buffer-sort-alphabetically now defaults to t.

*** 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
655 656 657 658 659 660 661 662 663 664 665 666
** D-Bus

*** It is possible now, to access alternative buses than the default
system or session bus.

*** dbus-register-{service,method,property}
The -method and -property functions do not automatically register
names anymore.

The new function dbus-register-service registers a service known name
on a D-Bus without simultaneously registering a property or a method.

667 668 669 670 671
** Dired-x

*** 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.

672 673 674
+++
*** The `dired local variables' feature provided by Dired-x is obsolete.
The standard directory local variables feature replaces it.
675

Chong Yidong's avatar
Chong Yidong committed
676
** ERC changes
Michael Mauger's avatar
Michael Mauger committed
677

Chong Yidong's avatar
Chong Yidong committed
678 679 680 681 682 683 684 685 686 687
*** New vars `erc-autojoin-timing' and `erc-autojoin-delay'.
If the value of `erc-autojoin-timing' is 'ident, ERC autojoins after a
successful NickServ identification, or after `erc-autojoin-delay'
seconds.  The default value, 'ident, means to autojoin immediately
after connecting.

*** 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
688

Chong Yidong's avatar
Chong Yidong committed
689
** Eshell changes
Michael Mauger's avatar
Michael Mauger committed
690

Chong Yidong's avatar
Chong Yidong committed
691 692 693 694 695 696 697 698 699 700 701 702
*** The default value of eshell-directory-name is a directory named
"eshell" in `user-emacs-directory'.  If the old "~/.eshell/" directory
exists, that is used instead.

** gdb-mi

*** GDB User Interface migrated to GDB Machine Interface and now
supports multithread non-stop debugging and debugging of several
threads simultaneously.

** In ido-mode, C-v is no longer bound to ido-toggle-vc.
The reason is that this interferes with cua-mode.
Michael Mauger's avatar
Michael Mauger committed
703

704 705 706 707 708 709 710 711
** Image mode

*** RET (`image-toggle-animation') toggles animation, if the displayed
image can be animated.

*** Option `image-animate-loop', if non-nil, loops the animation.
If nil, `image-toggle-animation' plays the animation once.

Chong Yidong's avatar
Chong Yidong committed
712
** Info
713

Chong Yidong's avatar
Chong Yidong committed
714 715 716 717 718 719 720
*** New command `info-display-manual' displays an Info manual
specified by its name.  If that manual is already visited in some Info
buffer within the current session, the command will display that
buffer.  Otherwise, it will load the manual and display it.  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.
721

Chong Yidong's avatar
Chong Yidong committed
722
** The Landmark game is now invoked with `landmark', not `lm'.
723

724
** MH-E has been upgraded to MH-E version 8.3.1.
Chong Yidong's avatar
Chong Yidong committed
725
See MH-E-NEWS for details.
726

Chong Yidong's avatar
Chong Yidong committed
727
** Modula-2 mode provides auto-indentation.
728

Chong Yidong's avatar
Chong Yidong committed
729
** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
730

Chong Yidong's avatar
Chong Yidong committed
731 732 733 734 735 736 737 738 739
** 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

*** The command `rmail-epa-decrypt' decrypts OpenPGP data
in the Rmail incoming message.

740 741 742 743 744
---
*** 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.

745 746
** Shell mode

747 748
*** Shell mode uses pcomplete rules, with the standard completion UI.

749 750 751 752 753 754 755
*** 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.

*** New variable `shell-dir-cookie-re'.
If set to an appropriate regexp, Shell mode can track your cwd by
reading it from your prompt.
Chong Yidong's avatar
Chong Yidong committed
756

757
---
Chong Yidong's avatar
Chong Yidong committed
758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
** SQL Mode enhancements.

*** `sql-dialect' is an alias for `sql-product'.

*** New variable `sql-port' specifies the port number for connecting
to a MySQL or Postgres server.

*** The command `sql-product-interactive' now takes a prefix argument,
which causes it to prompt for an SQL product instead of the current
value of `sql-product'.

*** Product-specific SQL interactive commands now take prefix args.
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'.

*** 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
second change prevents the MySQL and Postgres interpreters from
listing object name completions when sent text via `sql-send-*'
functions.

*** 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.

*** New variable `sql-connection-alist' for login parameter values.
This can be used to store different username, database and server
values.  Connections defined in this variable appear in the submenu
SQL->Start... for making new SQLi sessions.

*** New command `sql-connect' starts a predefined SQLi session,
using the login parameters from `sql-connection-alist'.

*** 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.

*** Commands for listing database objects and details.
In an SQLi session, you can get a list of objects in the database.
The contents of these lists are product specific.

**** `C-c C-l a' or the "SQL->List all objects" menu item
lists all the objects in the database.  With a prefix argument, it
displays additional details or extend the listing to include other
schemas objects.

**** `C-c C-l t' or the "SQL->List Table details" menu item
prompts for the name of a database table or view and displays the list
of columns in the relation.  With a prefix argument, it displays
additional details about each column.

*** New options `sql-send-terminator' and `sql-oracle-scan-on'.

*** An API for manipulating SQL product definitions has been added.

** TeX modes

*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
820

821
** Tramp
822
---
823
*** There exists a new inline access method "ksu" (kerberized su).
824
---
825
*** The following access methods are discontinued: "ssh1_old",
826
"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
827
---
828 829 830
*** The option `ange-ftp-binary-file-name-regexp' has changed its
default value to "".

Chong Yidong's avatar
Chong Yidong committed
831 832
** `url-queue-retrieve' downloads web pages asynchronously, but allow
controlling the degree of parallelism.
833

834 835 836
** VC and related modes

*** Support for pulling on distributed version control systems.
837
The vc-pull command runs a "pull" operation, if it is supported.
838
This updates the current branch from upstream.  A prefix argument
839
means to prompt the user for specifics, e.g. a pull location.
840

Sam Steingold's avatar
typo  
Sam Steingold committed
841
**** `vc-update' is now an alias for `vc-pull'.
842

843
**** Currently supported by Bzr, Git, and Mercurial.
844 845 846

*** Support for merging on distributed version control systems.
The vc-merge command now runs a "merge" operation, if it is supported.
847 848
This merges another branch into the current one.  This command prompts
the user for specifics, e.g. a merge source.
849

850
**** Currently supported for Bzr, Git, and Mercurial.
851

852
*** New option `vc-revert-show-diff' controls whether `vc-revert'
853
shows a diff while querying the user.  It defaults to t.
854

855 856 857 858 859
*** Log entries in some Log View buffers can be toggled to display a
longer description by typing RET (log-view-toggle-entry-display).
In the Log View buffers made by `C-x v L' (vc-print-root-log), you can
use this to display the full log entry for the revision at point.

860
**** Currently supported for Bzr, Git, and Mercurial.
861 862 863 864

**** Packages using Log View mode can enable this functionality by
binding `log-view-expanded-log-entry-function' to a suitable function.

865 866 867
*** New command `vc-ediff' allows visual comparison of two revisions
of a file similar to `vc-diff', but using ediff backend.

868
+++
869 870 871 872 873 874
*** The option `vc-initial-comment' was removed in Emacs 23.2, but
this was not advertised at the time.

+++
*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
Since Emacs 23, it has done the same thing as `toggle-read-only', but
875 876
this was not advertised at the time.

Chong Yidong's avatar
Chong Yidong committed
877
** FIXME: xdg-open for browse-url and reportbug, 2010/08.
878

Chong Yidong's avatar
Chong Yidong committed
879 880 881 882 883 884 885 886 887 888 889 890 891
** Obsolete modes

*** partial-completion-mode is obsolete.
You can get a comparable behavior with:
(setq completion-styles '(partial-completion initials))
(setq completion-pcm-complete-word-inserts-delimiters t)

*** pc-mode.el is obsolete.

*** sregex.el is obsolete, since rx.el is a strict superset.

*** s-region.el and pc-select are obsolete.
They are superseded by shift-select-mode enabled by default in 23.1.
892

Glenn Morris's avatar
Glenn Morris committed
893 894
** Miscellaneous

895 896 897
+++
*** f90.el has some support for Fortran 2008 syntax.

Glenn Morris's avatar
Glenn Morris committed
898 899 900
---
*** `copyright-fix-years' can optionally convert consecutive years to ranges.

901 902
*** New command `nato-region' converts text to NATO phonetic alphabet.

903 904

* New Modes and Packages in Emacs 24.1
Stefan Monnier's avatar
Stefan Monnier committed
905

906
+++
Leo Liu's avatar
Leo Liu committed
907
** Occur Edit mode applies edits made in *Occur* buffers to the
908
original buffers.  It is bound to "e" in Occur mode.
Leo Liu's avatar
Leo Liu committed
909

910 911
** New global minor modes electric-pair-mode, electric-indent-mode,
and electric-layout-mode.
912

913 914 915
** tabulated-list.el provides a generic major mode for tabulated data,
from which other modes can be derived.

916 917
** pcase.el provides the ML-style pattern matching macro `pcase'.

Michael Albinus's avatar
Michael Albinus committed
918 919
** secrets.el is an implementation of the Secret Service API, an
interface to password managers like GNOME Keyring or KDE Wallet.  The
920 921 922
Secret Service API requires D-Bus for communication.  The command
`secrets-show-secrets' offers a buffer with a visualization of the
secrets.
Michael Albinus's avatar
Michael Albinus committed
923

924 925 926
** notifications.el provides an implementation of the Desktop
Notifications API.  It requires D-Bus for communication.

927 928 929
** soap-client.el supports access to SOAP web services from Emacs.
soap-inspect.el is an interactive inspector for SOAP WSDL structures.

930 931
** xmodmap-generic-mode for xmodmap files.

932 933 934 935 936 937 938
** New emacs-lock.el package.
(The pre-existing one has been renamed to old-emacs-lock.el and moved
to obsolete/.)  Now, Emacs Lock is a proper minor mode
`emacs-lock-mode'.  Protection against exiting Emacs and killing the
buffer can be set separately.  The mechanism for auto turning off
protection for buffers with inferior processes has been generalized.

939 940

* Incompatible Lisp Changes in Emacs 24.1
Stefan Monnier's avatar
Stefan Monnier committed
941

942 943 944 945 946 947 948
---
** `char-direction-table' and the associated function `char-direction'
were deleted.  They were buggy and inferior to the new support of
bidirectional editing introduced in Emacs 24.  If you need the
bidirectional properties of a character, use `get-char-code-property'
with the last argument `bidi-class'.

949
+++
950 951 952 953 954
** `copy-directory' now copies the source directory as a subdirectory
of the target directory, if the latter is an existing directory.  The
new optional arg COPY-CONTENTS, if non-nil, makes the function copy
the contents directly into a pre-existing target directory.

955 956 957 958 959
** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
passes it to the mail user agent function.  This argument specifies an
action for returning to the caller after finishing with the mail.
This is currently used by Rmail to delete a mail window.

960 961 962 963 964
** For mouse click input events in the text area, the Y pixel
coordinate in the POSITION list now counts from the top of the text
area, excluding any header line.  Previously, it counted from the top
of the header line.

965
** Removed obsolete name `e' (use `float-e' instead).
966

967 968
** A backquote not followed by a space is now always treated as new-style.

969
** Test for special mode-class was moved from view-file to view-buffer.
970 971
FIXME: This only says what was changed, but not what are the
programmer-visible consequences.
972

973
** Passing a nil argument to a minor mode function now turns the mode
Juanma Barranquero's avatar
Juanma Barranquero committed
974
ON unconditionally.
975