NEWS 62.5 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

Glenn Morris's avatar
Glenn Morris committed
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

Glenn Morris's avatar
Glenn Morris committed
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.


* Installation Changes in Emacs 24.2
25 26 27 28 29

** New configure option '--enable-gcc-warnings', intended for developers.
If building with GCC, this enables compile-time checks that warn about
possibly-questionable C code.  On a recent GNU system there should be
no warnings; on older and on non-GNU systems the generated warnings
Paul Eggert's avatar
Paul Eggert committed
30
may be useful.
31

Glenn Morris's avatar
Glenn Morris committed
32 33

* Startup Changes in Emacs 24.2
34 35 36 37 38

** Emacs no longer searches for `leim-list.el' files beneath the standard
lisp/ directory.  There should not be any there anyway.  If you have
been adding them there, put them somewhere else, eg site-lisp.

Glenn Morris's avatar
Glenn Morris committed
39 40 41

* Changes in Emacs 24.2

42 43 44
** New functions `system-users', `system-groups' return lists of the user
name, group names known to the system (where possible).

Glenn Morris's avatar
Glenn Morris committed
45 46 47
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about which bzr revision was used.

48 49 50 51 52 53 54 55
** ImageMagick support, if available, is automatically enabled.
It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
automatically when setting `imagemagick-types-inhibit'.

*** Setting `imagemagick-types-inhibit' to t now disables the use of
ImageMagick to view images, set

56 57 58 59
** String values for `initial-buffer-choice' also apply to emacsclient
frames, if emacsclient is only told to open a new frame without
specifying any file to visit or expression to evaluate.

Glenn Morris's avatar
Glenn Morris committed
60 61

* Editing Changes in Emacs 24.2
62 63 64 65

** M-x move-to-column, if called interactively with no prefix arg, now
prompts for a column number.

66 67 68
** `mouse-avoidance-banish-position' can now be used to customize
`mouse-avoidance-mode' further.

69 70 71
** `C-M-f' and `C-M-b' will now move to the path name separator
character when doing minibuffer filename prompts.

72 73
** `goto-char' is now bound to `M-g c'.

Glenn Morris's avatar
Glenn Morris committed
74 75

* Changes in Specialized Modes and Packages in Emacs 24.2
76

77 78
** New `derived-mode' filter for Ibuffer, bound to `/ M'.
`/ m' is now bound to filter by used-mode, which used to be bound to `/ M'.
79

Chong Yidong's avatar
Chong Yidong committed
80 81 82 83 84 85 86 87 88
** Apropos

*** The faces used by Apropos are now directly customizable.
These faces are named `apropos-symbol', `apropos-keybinding', and so on;
see the `apropos' Custom group for details.

**** The old options whose values specified faces to use were removed
(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).

89 90 91
** Customize

*** `custom-reset-button-menu' now defaults to t.
92

93 94 95 96
*** Non-option variables are never matched in `customize-apropos' and
`customize-apropos-options' (i.e. the prefix argument does nothing for
these commands now).

97
** erc will look up server/channel names via auth-source and use the
98
channel keys found, if any.
99

100 101
** The `server-auth-key' variable can be used to set a permanent
shared key for Emacs Server.
102 103 104 105

** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
closing brackets to be aligned with the line of the opening bracket.

Glenn Morris's avatar
Glenn Morris committed
106 107
** FIXME something happened to ses.el, 2012-04-17.

108 109
** which-function-mode now applies to all applicable major modes by default.

110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
** D-Bus

+++
*** New variables `dbus-compiled-version' and `dbus-runtime-version'.

+++
*** The D-Bus object manager interface is implemented.

+++
*** Variables of type :(u)int32 and :(u)int64 accept floating points,
if their value does not fit into Emacs's integer range.

+++
*** The function `dbus-call-method' works non-blocking now, it can be
interrupted by C-g.  `dbus-call-method-non-blocking' is obsolete.

+++
*** Signals can be sent also as unicast message.

+++
*** The argument list of `dbus-register-signal' has been extended,
according to the new match rule types of D-Bus.  See the manual for
details.

+++
*** `dbus-init-bus' supports private connections.

+++
*** There is a new function `dbus-setenv'.

140 141 142 143 144
+++
** notifications.el supports now version 1.2 of the Notifications API.
The function `notifications-get-capabilities' returns the supported
server properties.

Glenn Morris's avatar
Glenn Morris committed
145 146 147
** Obsolete packages:

*** mailpost.el
148 149 150

*** mouse-sel.el

Glenn Morris's avatar
Glenn Morris committed
151 152 153 154

* New Modes and Packages in Emacs 24.2

* Incompatible Lisp Changes in Emacs 24.2
155 156 157 158 159 160 161

+++
** Docstrings starting with `*' no longer indicate user options.
Only variables defined using `defcustom' are considered user options.
The function `user-variable-p' is now an obsolete alias for
`custom-variable-p'.

162 163 164
** `face-spec-set' no longer sets frame-specific attributes when the
third argument is a frame (that usage was obsolete since Emacs 22.2).

165 166 167 168 169
+++
** The arguments of `dbus-register-signal' are no longer just strings,
but keywords or keyword-string pairs.  The old argument list will
still be supported for Emacs 24.x.

Glenn Morris's avatar
Glenn Morris committed
170 171

* Lisp changes in Emacs 24.2
172 173 174 175 176 177 178 179

* Changes in Emacs 24.2 on non-free operating systems

** New configure.bat options on MS-Windows:

*** --without-libxml2 omits support for libxml2, even if its presence
is detected.

180

181
* Installation Changes in Emacs 24.1
Chong Yidong's avatar
Chong Yidong committed
182

183 184 185 186
** 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.
187

188 189 190 191
** 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.
192

193 194 195 196
** 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
197

198 199 200 201
** 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
202
This feature is not available for the Nextstep or MS ports.
203

204 205 206 207 208
** 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.

209 210 211 212
** By default, the installed Info and man pages are compressed.
You can disable this by configuring --without-compress-info.

** New configure option --with-wide-int.
Paul Eggert's avatar
Paul Eggert committed
213
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
214 215
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
216

217
** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
218 219 220
These provide no new functionality, they just remove the need to edit
lib-src/Makefile by hand in order to use the associated features.

221
** New configure option --enable-use-lisp-union-type.
222 223
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
224 225 226 227 228 229 230

** 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.

231

232
* Startup Changes in Emacs 24.1
233

234
** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
Glenn Morris's avatar
Glenn Morris committed
235 236
command line arguments, and the EMACS_UNIBYTE environment variable, no
longer have any effect.  (They were declared obsolete in Emacs 23.)
237

238
** New command line option `--no-site-lisp' removes site-lisp directories
239 240
from load-path.  -Q now implies this.  This option does not affect the
EMACSLOADPATH environment variable (and hence has no effect for
Glenn Morris's avatar
Glenn Morris committed
241
Nextstep builds).
242

243

244
* Changes in Emacs 24.1
245

246
** Completion
247

248 249 250
*** Many packages now use the `completion-at-point' command,
rather than implementing separate completion commands.

251
*** `completion-at-point' now handles tags and semantic completion.
252

253 254
*** Completion in a non-minibuffer now tries to detect the end of completion
and pops down the *Completions* buffer accordingly.
255 256 257 258

*** New option `completion-cycle-threshold' allows completion cycling.

*** New option `completion-category-overrides' for overriding the
259
default completion style in certain circumstances.
260

261
*** New completion style `substring'.
262 263 264 265

*** Completion of buffer names uses `substring' completion by default.

*** The option `widget-complete-field' has been removed.
266

267
** Mail changes
268

269 270 271 272 273 274
*** The first time you try sending mail, Emacs asks for a mail method.
This is implemented by a new default for `send-mail-function', which
is `sendmail-query-once'.  This offers to use the smtpmail package, or
to use the old defaults relying on external mail facilities
(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
`mailclient-send-it' on Windows).
275

276 277 278
*** Typing C-c m in the buffer made by M-x report-emacs-bug transfers
the report to your desktop's preferred mail client, if there is one.
This uses either the "xdg-email" utility, or Mac OS's "open" command.
279

280 281
*** See Changes in Specialized Modes and Packages for SMTPmail changes
and Mail mode changes
Glenn Morris's avatar
Glenn Morris committed
282

Chong Yidong's avatar
Chong Yidong committed
283
** Emacs server and client changes
284

285
*** New option `server-port' specifies the port for TCP Emacs servers.
286

Chong Yidong's avatar
Chong Yidong committed
287
*** New emacsclient argument -q/--quiet suppresses some status messages.
288

289 290
*** New emacsclient argument --frame-parameters specifies the frame
parameters of any newly-created graphical frame.
291 292 293 294

*** If emacsclient shuts down due to Emacs signaling an error,
its exit status is 1.

Chong Yidong's avatar
Chong Yidong committed
295 296 297 298
*** 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.

299 300 301
** Internationalization changes

*** Emacs now supports display and editing of bidirectional text.
302 303
Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
displayed in the correct visual order as expected by users of those
304 305 306
scripts.  The display reordering is a "full bidirectionality" class
implementation of the Unicode Bidirectional Algorithm (UBA).  Buffers
with no RTL text should look exactly the same as before.
307

Chong Yidong's avatar
Chong Yidong committed
308
**** New buffer-local variable `bidi-display-reordering'.
309
To disable display reordering in a buffer, change this to nil.
310

Chong Yidong's avatar
Chong Yidong committed
311 312
**** New buffer-local variable `bidi-paragraph-direction'.
If nil (the default), Emacs determines the base direction of each
313 314 315
paragraph from its text, as specified by the UBA.  Setting the value
to `right-to-left' or `left-to-right' forces a base direction on each
paragraph.
316

317 318
Paragraphs with right-to-left base direction are displayed starting at
the right window edge.
319

320 321 322 323 324
*** Enhanced support for characters with no glyphs in available fonts,
or, on text terminals, characters that cannot be encoded by the
terminal coding system.  The new option `glyphless-char-display-control'
specifies how to display them: as a hexadecimal code in a box, a thin
1-pixel space, an empty box, etc.
325

326
*** New input methods: farsi, farsi-translit, bulgarian-alt-phonetic.
Chong Yidong's avatar
Chong Yidong committed
327

328 329 330
*** `nobreak-char-display' now also highlights Unicode hyphen chars
(U+2010 and U+2011).

331
*** New Hebrew translation of the Emacs Tutorial.
332 333 334
Type `C-u C-h t' to choose it in case your language setup doesn't
automatically select it.

335 336 337
** An Emacs Lisp package manager is now included.
This is a convenient way to download and install additional packages,
from a package repository at http://elpa.gnu.org.
338

339 340
*** M-x list-packages shows a list of packages, which can be
selected for installation.
341

342
*** New command `describe-package', bound to `C-h P'.
343

344 345 346
*** By default, all installed packages are loaded automatically when
Emacs starts up.  To disable this, set `package-enable-at-startup' to
nil.  To specify the packages to load, customize `package-load-list'.
Joakim Verona's avatar
Joakim Verona committed
347

348 349
** Custom theme changes

350 351
*** New command `M-x customize-themes', which provides a convenient
interface for enabling and disabling Custom themes.
352

353
*** New option `custom-theme-load-path' is the load path for themes.
354 355 356 357 358 359
Emacs no longer looks for Custom themes in `load-path'.  The default
value of `custom-theme-load-path' says to look for themes in
`custom-theme-directory', followed by a subdirectory of
`data-directory' named "themes/", which contains a small selection of
built-in Custom themes.

360 361 362 363
*** 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.
364

365
** Improved GTK integration
366

367
*** GTK scroll-bars are now placed on the right by default.
368 369
The function `set-scroll-bar-mode' can change this.

370
*** GTK tool bars can have just text, just images or images and text.
371 372 373 374
Customize `tool-bar-style' to choose the style.  On a Gnome desktop,
the default is taken from desktop settings.

*** GTK tool bars can be placed on any edge of the frame.
375 376 377
The frame-parameter tool-bar-position controls this.  It takes the
values top, left, right or bottom.  The Options => Show/Hide menu has
entries for this.
378

379 380
*** The default colors for selected text (the `region' face) are taken
from the GTK theme when Emacs is built with GTK.
381

382 383
*** Emacs uses GTK tooltips by default if built with GTK.
You can disable this by changing `x-gtk-use-system-tooltips' to nil.
384

385 386 387 388 389 390 391 392 393 394 395 396 397
** Graphical interface changes

*** On graphical displays, the mode-line no longer ends in dashes.
Also, the first dash (which does not indicate anything) is just
displayed as a space.

*** `menu-bar-select-buffer-function' lets you choose another operation
instead of `switch-to-buffer' when selecting an item in the Buffers menu.

*** Lucid menus and dialogs can display antialiased fonts if Emacs is
built with Xft.  These fonts can be set via X resources, for example:
Emacs.pane.menubar.font: Courier-12

398
** Exiting changes
399

400
*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
401 402
or if it receives a SIGINT signal in batch mode.

403 404 405
*** `kill-emacs-hook' is now also run in batch mode.
Third-party code which adds to `kill-emacs-hook' should check if they
do the right thing in batch mode.
406

Chong Yidong's avatar
Chong Yidong committed
407
** Scrolling changes
408

Chong Yidong's avatar
Chong Yidong committed
409
*** New scrolling commands `scroll-up-command' and `scroll-down-command'
Juanma Barranquero's avatar
Juanma Barranquero committed
410
(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
411
of buffer at first key-press (instead they move to top/bottom of buffer)
412
when `scroll-error-top-bottom' is non-nil.
413 414 415

*** New option `scroll-error-top-bottom' (see above).

Chong Yidong's avatar
Chong Yidong committed
416
*** New scrolling commands `scroll-up-line' and `scroll-down-line'
417
scroll a line instead of full screen.
418

Chong Yidong's avatar
Chong Yidong committed
419
*** New property `scroll-command' should be set on a command's symbol to
Esa Peuha's avatar
Esa Peuha committed
420
define it as a scroll command affected by `scroll-preserve-screen-position'.
421

Chong Yidong's avatar
Chong Yidong committed
422
*** If you customize `scroll-conservatively' to a value greater than 100,
423 424 425 426
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.
427

428
*** "Aggressive" scrolling now honors the scroll margins.
429 430 431 432 433
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.

434 435
** Basic SELinux support has been added.
This requires Emacs to be linked with libselinux at build time.
436

437 438 439 440
*** Emacs preserves the SELinux file context when backing up.
Also, the function `copy-file' has an extra optional argument for
preserving SELinux context, and the return value of `backup-buffer'
now includes the SELinux context.
441

442
*** New functions `file-selinux-context' and `set-file-selinux-context'
443
get and set the SELinux context of a file.
444

445
** Trash changes
446

447 448
*** `delete-by-moving-to-trash' now only affects commands that specify
trashing.  This avoids inadvertently trashing temporary files.
449

450 451
*** Calling `delete-file' or `delete-directory' with a prefix argument
now forces true deletion, regardless of `delete-by-moving-to-trash'.
452

Chong Yidong's avatar
Chong Yidong committed
453
** File- and directory-local variable changes
454

Chong Yidong's avatar
Chong Yidong committed
455 456 457 458
*** 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.
459

Chong Yidong's avatar
Chong Yidong committed
460 461 462 463 464
*** 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.
465

Chong Yidong's avatar
Chong Yidong committed
466 467
*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
Instead, use "eval: (minor-mode 1)".
Glenn Morris's avatar
Glenn Morris committed
468

Glenn Morris's avatar
Glenn Morris committed
469 470
*** The variable `inhibit-first-line-modes-regexps' has been renamed
to `inhibit-local-variables-regexps'.  As the name suggests, it now
471 472 473
applies to ALL file local variables, not just -*- lines.  The
associated `inhibit-first-line-modes-suffixes' has been renamed in the
corresponding way.
474

475 476
** Window changes

477 478 479
*** The `quit-window' command now restores the last buffer displayed
in the quitted window.

480 481 482 483
*** 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.
484

485 486 487 488 489 490 491 492 493 494
**** 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'.

**** New option `display-buffer-alist' maps buffer name regexps to
display actions, taking precedence over `display-buffer-base-action'.

495 496 497 498
*** 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.
499

500 501 502 503 504
*** 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.
505

506 507 508 509
*** New option `frame-auto-hide-function' lets you choose between
iconifying or deleting a frame when burying a buffer in a dedicated
frame, or quitting a window showing a buffer in a frame of its own.

510
*** New commands `maximize-window' and `minimize-window'.
Paul Eggert's avatar
Paul Eggert committed
511
These maximize and minimize the size of a window within its frame.
512 513 514 515 516

*** 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.

517
** Minibuffer changes
518

519
*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
520 521
This is handy for minibuffer-only frames, and is also used for the feature
where mouse-1 pops up *Messages*"', which can now easily be changed.
Chong Yidong's avatar
Chong Yidong committed
522

523
*** Minibuffers set `truncate-lines' to nil.
Glenn Morris's avatar
NEWS  
Glenn Morris committed
524
If you want to change the value to something else, you could use
525 526 527 528 529
for example `minibuffer-setup-hook'.

** `auto-mode-case-fold' is now enabled by default.

** `backup-by-copying-when-mismatch' now defaults to t.
Glenn Morris's avatar
NEWS  
Glenn Morris committed
530

531 532 533 534 535 536 537 538 539
** New basic faces `error', `warning', `success'.
These are used to highlight text indicating failure, caution or
successful operation.

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

** The variable `focus-follows-mouse' now always defaults to nil.

540

541
* Editing Changes in Emacs 24.1
542

543
** Search changes
544 545 546 547 548 549 550 551 552

*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
`isearch-yank-line'.

*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
`isearch-yank-kill'.

*** M-s C-e in Isearch is now bound to `isearch-yank-line'.

553
** New commands `count-words-region' and `count-words'.
554

555 556 557 558 559
*** M-= is bound to `count-words-region', not `count-lines-region'.
The `count-words-region' command, when called interactively, reports
the number of lines, words, and characters in the region.  It is a
superset of the old `count-lines-region', which is now an obsolete
alias for it.
Glenn Morris's avatar
Glenn Morris committed
560

561
** The command `just-one-space' (M-SPC), if given a negative argument,
562 563
also deletes newlines around point.

564
** Deletion changes
565

566
*** New option `delete-active-region'.
567
If non-nil, [delete] and DEL delete the region if it is active and no
568
prefix argument is given.  If set to `kill', those commands kill
569
instead.
570

571
*** New command `delete-forward-char', bound to [delete].
572 573
This is meant for interactive use, and obeys `delete-active-region'.
The command `delete-char' does not obey `delete-active-region'.
574

575 576
*** `delete-backward-char' is now a Lisp function.
Apart from obeying `delete-active-region', its behavior is unchanged.
577 578
However, the byte compiler now warns if it is called from Lisp; Lisp
callers should use delete-char with a negative argument instead.
579

580 581
*** The option `mouse-region-delete-keys' has been deleted.

582 583
** Selection changes.

584 585 586 587
The default handling of clipboard and primary selections has been
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.
588 589 590 591 592 593

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.

*** `select-active-regions' now defaults to t.
Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
594
the kill ring.  The selected text is put in the primary selection, if
595 596 597 598 599 600 601 602
the system possesses a separate primary selection facility (e.g. X).

**** `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.

603 604
**** `mouse-drag-copy-region' now defaults to nil.

605 606 607
*** 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'.
608

609
*** `x-select-enable-clipboard' now defaults to t on all platforms.
610

611 612 613 614 615
*** `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.

**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
616
exactly equivalent to M-w, C-w, and C-y respectively.
617 618 619 620 621 622

**** 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.

*** To return to the previous behavior, do the following:
623

624
**** Change `select-active-regions' to nil.
625 626 627 628
**** 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.
629

630
*** Support for X cut buffers has been removed.
631

632 633
*** X clipboard managers are now supported.
To inhibit this, change `x-select-enable-clipboard-manager' to nil.
634

635 636 637
** New command `C-x r N' (`rectangle-number-lines') numbers the lines
in the current rectangle.  With a prefix argument, this prompts for a
number to count from and for a format string.
638

639
** `redisplay-dont-pause' now defaults to t.
640 641 642 643 644
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.

645 646 647 648 649 650
** 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).

651 652 653 654 655 656
** When `occur' is called with a prefix argument, matching strings are
collected into the `*Occur*' buffer without line numbers.  If there
are parenthesized subexpressions in the specified regexp, `occur'
reads replacement text that may contain \\& and \\N whose convention
follows `replace-match'.

657

658
* Changes in Specialized Modes and Packages in Emacs 24.1
659

Chong Yidong's avatar
Chong Yidong committed
660
** Archive Mode has basic support for browsing and updating 7z archives.
661

662
** BibTeX mode
663

664
*** BibTeX mode now supports biblatex.
665 666 667 668
Use the variable `bibtex-dialect' to select different BibTeX dialects.
`bibtex-entry-field-alist' is now an obsolete alias for
`bibtex-BibTeX-entry-alist'.

669 670
*** New command `bibtex-search-entries', bound to C-c C-a.

671
*** New `bibtex-entry-format' option `sort-fields', disabled by default.
672

673 674
*** New variable `bibtex-search-entry-globally'.

675
** Browse-url
676

677
*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
678

679 680 681
*** 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.

Glenn Morris's avatar
Glenn Morris committed
682 683
** Calendar, Diary, and Appt

684
*** Diary entries can contain non-printing "comments".
Glenn Morris's avatar
Glenn Morris committed
685 686
See the variable `diary-comment-start'.

687 688 689
*** Appointments can specify their individual warning times.
See the variable `appt-warning-time-regexp'.

690 691 692 693
*** 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.

694 695
*** New function `diary-hebrew-birthday'.

696 697 698
*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
may no longer be nil, but must all be strings.

699 700 701
*** 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' instead.
Glenn Morris's avatar
Glenn Morris committed
702 703 704 705 706 707 708 709

*** 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

Alan Mackenzie's avatar
Alan Mackenzie committed
710
** CC Mode
711

Alan Mackenzie's avatar
Alan Mackenzie committed
712
*** New feature to "guess" the style in an existing buffer.
713
The main entry point is M-x c-guess.
Chong Yidong's avatar
Chong Yidong committed
714

Alan Mackenzie's avatar
Alan Mackenzie committed
715 716
*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).

717
*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
Alan Mackenzie's avatar
Alan Mackenzie committed
718 719 720
Thus C-M-a will, by default, go to the beginning of the immediate function,
not the top level.

721
*** "Macros with semicolons" can be registered for correct indentation.
Alan Mackenzie's avatar
Alan Mackenzie committed
722 723 724
Where such a macro ends a line (no semicolon) the next statement is no longer
parsed as a statement continuation.

725
** Comint and modes derived from it use the standard completion code.
Chong Yidong's avatar
Chong Yidong committed
726 727

** Compilation mode
728

729
*** Compilation mode can be used without Font Lock mode.
Chong Yidong's avatar
Chong Yidong committed
730 731
`compilation-parse-errors-function' is now obsolete.

732
*** New variable `compilation-filter-start', which is bound while
733 734
`compilation-filter-hook' runs.  It records the start position of the
text inserted by `compilation-filter'.
Chong Yidong's avatar
Chong Yidong committed
735

736 737
*** `compilation-error-screen-columns' and `compilation-first-column'
are obeyed in the editing buffer.  So programming language modes can
738 739
set them, whereas previously only the value in the *Compilation*
buffer was used.
740

741 742 743 744
** Customize

*** Customize buffers now contain a search field.
The search is performed using `customize-apropos'.
745
To turn off the search field, set `custom-search-field' to nil.
746 747 748 749 750 751 752

*** 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
753
choose a color via `list-colors-display'.
754

Chong Yidong's avatar
Chong Yidong committed
755 756
** D-Bus

Glenn Morris's avatar
Glenn Morris committed
757 758
*** It is now possible to access buses other than the default system
or session bus.
Chong Yidong's avatar
Chong Yidong committed
759

760
*** The `dbus-register-method' and `dbus-register-property' functions
Glenn Morris's avatar
Glenn Morris committed
761
optionally do not register names.
Chong Yidong's avatar
Chong Yidong committed
762

763
*** The new function `dbus-register-service' registers a known service
764
name on a D-Bus without also registering a property or a method.
Chong Yidong's avatar
Chong Yidong committed
765

766
** Dired-x
Michael Albinus's avatar
Michael Albinus committed
767

768 769 770
*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
if called with a prefix argument, read a file name from the minibuffer
instead of using the current buffer.
771

772
*** The "dired local variables" feature of Dired-x is obsolete.
773
The standard directory local variables feature replaces it.
774

Chong Yidong's avatar
Chong Yidong committed
775
** ERC changes
Michael Mauger's avatar
Michael Mauger committed
776

777 778
*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
controlling attempts to autojoin a channel.
Chong Yidong's avatar
Chong Yidong committed
779 780 781 782 783

*** 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
784

Chong Yidong's avatar
Chong Yidong committed
785
** Eshell changes
Michael Mauger's avatar
Michael Mauger committed
786

Glenn Morris's avatar
Glenn Morris committed
787 788 789
*** 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
790 791

** gdb-mi
792 793

*** The M-x gdb command now uses the GDB Machine Interface protocol.
Glenn Morris's avatar
Glenn Morris committed
794 795
It now supports multithread non-stop debugging and simultaneous
debugging of several threads.
Michael Mauger's avatar
Michael Mauger committed
796

797 798
** Image mode

Glenn Morris's avatar
Glenn Morris committed
799 800
*** RET (`image-toggle-animation') toggles animation, if applicable.
Animation plays once, unless the option `image-animate-loop' is non-nil.
801

Chong Yidong's avatar
Chong Yidong committed
802
** Info
803

804
*** New command M-x info-display-manual displays a named Info manual.
805 806 807 808
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.
809

810 811 812 813 814
*** `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.

815
** Mail mode changes (not Message mode)
816

817 818
*** New command M-x mail-add-attachment for adding MIME attachments

819 820 821 822
*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
(Its name is misleading, since it has nothing to do with MIME
attachments.)  The old name is now an obsolete alias to the new name.

823
** MH-E has been upgraded to MH-E version 8.3.1.
Chong Yidong's avatar
Chong Yidong committed
824
See MH-E-NEWS for details.
825

Chong Yidong's avatar
Chong Yidong committed
826
** Modula-2 mode provides auto-indentation.
827

Chong Yidong's avatar
Chong Yidong committed
828
** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
829

830
** nXML mode no longer binds C-RET to `nxml-complete'.
831 832 833
Completion is now performed via `completion-at-point', bound to C-M-i
or M-TAB.  If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
default), this performs tag completion.
834

Chong Yidong's avatar
Chong Yidong committed
835
** Prolog mode has been completely revamped, with lots of additional
836 837
functionality such as more intelligent indentation, electricity,
support for more variants, including Mercury, and a lot more.
Chong Yidong's avatar
Chong Yidong committed
838 839 840 841 842 843

** Rmail

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

844 845 846 847
*** 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.

848
** Shell mode
849 850 851 852 853 854 855

*** M-x shell 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.

*** TAB is now bound to the standard `completion-at-point' command,
which now implements the pcomplete rules for shell command completion.
856

857 858
** SMTPmail

859
*** SMTPmail now uses encrypted connections (via STARTTLS) by default
860 861 862 863 864 865
if the mail server supports them.  This uses either built-in GnuTLS
support, or the starttls.el library.  Customize `smtpmail-stream-type'
to change this.

*** The variable `smtpmail-auth-credentials' has been removed.
By default, the information is now stored in the file ~/.authinfo.
866 867 868 869 870 871
This was the default value of smtpmail-auth-credentials.  If you had
customized smtpmail-auth-credentials to a list of user names and
passwords, those settings are not used.  During your first connection
to the smtp server, Emacs will prompt for the user name and password,
and offer to save them to ~/.authinfo.  Or you can manually copy the
credentials to ~/.authinfo.  For example, if you had
872 873 874 875 876 877 878 879 880 881 882 883

  (setq smtpmail-auth-credentials
        '(("mail.example.org" 25 "jim" "s!cret")))

then the equivalent line in ~/.authinfo would be

  machine mail.example.org port 25 login jim password s!cret

See the auth-source manual for more information, e.g. on encrypting
the credentials file.

*** The variable `smtpmail-starttls-credentials' has been removed.
884
If you had that set, you need to put
885 886 887 888 889

  machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"

in your ~/.authinfo file instead.

890
** SQL mode
Chong Yidong's avatar
Chong Yidong committed
891

892 893
*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
and `sql-oracle-scan-on'.
Chong Yidong's avatar
Chong Yidong committed
894

895
*** New options controlling prompting for login parameters.
896 897 898
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
899 900

*** The command `sql-product-interactive' now takes a prefix argument,
901
which causes it to prompt for an SQL product.
Chong Yidong's avatar
Chong Yidong committed
902

903
*** Product-specific SQL interactive commands now take prefix arguments.
Chong Yidong's avatar
Chong Yidong committed
904 905 906 907 908 909 910 911
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
912 913
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
914 915 916 917 918 919 920 921

*** 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.

922 923
*** New commands for listing database objects and details:
sql-list-all and sql-list-table.
Chong Yidong's avatar
Chong Yidong committed
924 925 926 927 928 929

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

** TeX modes

*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
930

931
** Tramp
932

933
*** New inline access method "ksu" (kerberized su).
934

935
*** The following access methods are discontinued: "ssh1_old",
936
"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
937

938 939
*** The user option `remote-file-name-inhibit-cache' controls whether
remote file attributes are cached for better performance.