NEWS 65.4 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

32 33 34
---
** Emacs uses libtinfo in preference to libncurses, if available.

35 36 37 38 39
---
** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
/usr/pkg/lib to the linker search path.  You must add them yourself if
you want them.

Glenn Morris's avatar
Glenn Morris committed
40 41

* Startup Changes in Emacs 24.2
42 43 44 45 46

** 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
47 48 49

* Changes in Emacs 24.2

50 51 52
** 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
53 54 55
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about which bzr revision was used.

56 57 58 59 60 61 62 63
** 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

64 65 66 67
** 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.

68
** Using "unibyte: t" in Lisp source files is obsolete.
Glenn Morris's avatar
Glenn Morris committed
69
Use "coding: raw-text" instead.
70

Glenn Morris's avatar
Glenn Morris committed
71 72

* Editing Changes in Emacs 24.2
73 74 75 76

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

77 78 79
** `mouse-avoidance-banish-position' can now be used to customize
`mouse-avoidance-mode' further.

80 81 82
** `C-M-f' and `C-M-b' will now move to the path name separator
character when doing minibuffer filename prompts.

83 84
** `goto-char' is now bound to `M-g c'.

Glenn Morris's avatar
Glenn Morris committed
85 86

* Changes in Specialized Modes and Packages in Emacs 24.2
87

88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119
** reStructuredText mode

*** Major merge with upstream development.

*** Nearly all keys are rebound making room for more keys and comply
better to usage in other modes. Bindings are described with C-c C-h.

*** Major revision of indentation. Now works very similar to other
modes. TAB is your friend.

*** Major revision of filling. Works fine with most of
reStructuredText syntax. Auto-filling is also supported.

*** Major revision of comment handling.

*** Major revision of fontification. Now works with `jit-lock-mode'.
Thanks to Stefan Monnier for help.

*** reStructuredText syntax is covered more closely in many cases.
Among other things this improves the experience for Sphinx users.

*** `rst-insert-list' inserts new list or continues existing lists.
Based on code by Wei-Wei Guo.

*** Customization is extended, corrected and improved.

*** Negative prefix argument always works for `rst-adjust'.

*** Window configuration is reset after displaying TOC.

*** There is a package version in `rst-version'

120 121
** 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'.
122

Chong Yidong's avatar
Chong Yidong committed
123 124 125 126 127 128 129 130 131
** 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.).

132 133
** Calendar

134 135
*** The calendars produced by cal-html include holidays.
Customize cal-html-holidays to change this.
136

137 138 139
** Customize

*** `custom-reset-button-menu' now defaults to t.
140

141 142 143 144
*** Non-option variables are never matched in `customize-apropos' and
`customize-apropos-options' (i.e. the prefix argument does nothing for
these commands now).

145
** erc will look up server/channel names via auth-source and use the
146
channel keys found, if any.
147

148 149 150 151 152 153 154
** Follow mode

*** The obsolete variable `follow-mode-off-hook' has been removed.

*** Follow mode no longer works by using advice.
The option `follow-intercept-processes' has been removed.

155 156
** The `server-auth-key' variable can be used to set a permanent
shared key for Emacs Server.
157 158 159 160

** 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
161 162
** FIXME something happened to ses.el, 2012-04-17.

163 164
** which-function-mode now applies to all applicable major modes by default.

165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194
** 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'.

195 196 197 198 199
+++
** notifications.el supports now version 1.2 of the Notifications API.
The function `notifications-get-capabilities' returns the supported
server properties.

200 201
** Tabulated List and packages derived from it

202
*** New command `tabulated-list-sort', bound to `S', sorts the column
203 204
at point, or the Nth column if a numeric prefix argument is given.

Glenn Morris's avatar
Glenn Morris committed
205 206
** Obsolete packages:

207 208 209 210 211
*** assoc.el
In most cases, assoc+member+push+delq work just as well.
And in any case it's just a terrible package: ugly semantics, terrible
inefficiency, and not namespace-clean.

212 213
*** bruce.el

Glenn Morris's avatar
Glenn Morris committed
214
*** mailpost.el
215 216 217

*** mouse-sel.el

218 219
*** patcomp.el

Glenn Morris's avatar
Glenn Morris committed
220 221 222 223

* New Modes and Packages in Emacs 24.2

* Incompatible Lisp Changes in Emacs 24.2
224 225 226 227 228 229 230

+++
** 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'.

231 232 233
** `face-spec-set' no longer sets frame-specific attributes when the
third argument is a frame (that usage was obsolete since Emacs 22.2).

234 235 236 237 238
+++
** 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.

239 240 241 242 243
** The following obsolete variables and varaliases have been removed:

*** `facemenu-unlisted-faces'
*** `rmail-decode-mime-charset'

Glenn Morris's avatar
Glenn Morris committed
244 245

* Lisp changes in Emacs 24.2
246

247 248 249 250
** New function `set-temporary-overlay-map'.

** New macros `setq-local' and `defvar-local'.

251
** New error type and new function `user-error'.  Doesn't trigger the debugger.
252

253 254 255 256 257 258 259
** Completion

*** New function `completion-table-with-quoting' to handle completion
in the presence of quoting, such as file completion in shell buffers.

*** New function `completion-table-subvert' to use an existing completion
table, but with a different prefix.
260 261 262 263 264 265

** Time

*** `current-time-string' no longer requires that its argument's year
must be in the range 1000..9999.  It now works with any year supported
by the underlying C implementation.
266 267

** `automount-dir-prefix' is obsolete.
268 269 270 271 272 273 274 275

* 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.

276

277
* Installation Changes in Emacs 24.1
Chong Yidong's avatar
Chong Yidong committed
278

279 280 281 282
** 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.
283

284 285 286 287
** 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.
288

289 290 291 292
** 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
293

294 295 296 297
** 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
298
This feature is not available for the Nextstep or MS ports.
299

300 301 302 303 304
** 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.

305 306 307 308
** 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
309
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
310 311
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
312

313
** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
314 315 316
These provide no new functionality, they just remove the need to edit
lib-src/Makefile by hand in order to use the associated features.

317
** New configure option --enable-use-lisp-union-type.
318 319
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
320 321 322 323 324 325 326

** 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.

327

328
* Startup Changes in Emacs 24.1
329

330
** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
Glenn Morris's avatar
Glenn Morris committed
331 332
command line arguments, and the EMACS_UNIBYTE environment variable, no
longer have any effect.  (They were declared obsolete in Emacs 23.)
333

334
** New command line option `--no-site-lisp' removes site-lisp directories
335 336
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
337
Nextstep builds).
338

339

340
* Changes in Emacs 24.1
341

342
** Completion
343

344 345 346
*** Many packages now use the `completion-at-point' command,
rather than implementing separate completion commands.

347
*** `completion-at-point' now handles tags and semantic completion.
348

349 350
*** Completion in a non-minibuffer now tries to detect the end of completion
and pops down the *Completions* buffer accordingly.
351 352 353 354

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

*** New option `completion-category-overrides' for overriding the
355
default completion style in certain circumstances.
356

357
*** New completion style `substring'.
358 359 360 361

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

*** The option `widget-complete-field' has been removed.
362

363
** Mail changes
364

365 366 367 368 369 370
*** 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).
371

372 373 374
*** 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.
375

376 377
*** See Changes in Specialized Modes and Packages for SMTPmail changes
and Mail mode changes
Glenn Morris's avatar
Glenn Morris committed
378

Chong Yidong's avatar
Chong Yidong committed
379
** Emacs server and client changes
380

381
*** New option `server-port' specifies the port for TCP Emacs servers.
382

Chong Yidong's avatar
Chong Yidong committed
383
*** New emacsclient argument -q/--quiet suppresses some status messages.
384

385 386
*** New emacsclient argument --frame-parameters specifies the frame
parameters of any newly-created graphical frame.
387 388 389 390

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

Chong Yidong's avatar
Chong Yidong committed
391 392 393 394
*** 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.

395 396 397
** Internationalization changes

*** Emacs now supports display and editing of bidirectional text.
398 399
Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
displayed in the correct visual order as expected by users of those
400 401 402
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.
403

Chong Yidong's avatar
Chong Yidong committed
404
**** New buffer-local variable `bidi-display-reordering'.
405
To disable display reordering in a buffer, change this to nil.
406

Chong Yidong's avatar
Chong Yidong committed
407 408
**** New buffer-local variable `bidi-paragraph-direction'.
If nil (the default), Emacs determines the base direction of each
409 410 411
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.
412

413 414
Paragraphs with right-to-left base direction are displayed starting at
the right window edge.
415

416 417 418 419 420
*** 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.
421

422
*** New input methods: farsi, farsi-translit, bulgarian-alt-phonetic.
Chong Yidong's avatar
Chong Yidong committed
423

424 425 426
*** `nobreak-char-display' now also highlights Unicode hyphen chars
(U+2010 and U+2011).

427
*** New Hebrew translation of the Emacs Tutorial.
428 429 430
Type `C-u C-h t' to choose it in case your language setup doesn't
automatically select it.

431 432 433
** 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.
434

435 436
*** M-x list-packages shows a list of packages, which can be
selected for installation.
437

438
*** New command `describe-package', bound to `C-h P'.
439

440 441 442
*** 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
443

444 445
** Custom theme changes

446 447
*** New command `M-x customize-themes', which provides a convenient
interface for enabling and disabling Custom themes.
448

449
*** New option `custom-theme-load-path' is the load path for themes.
450 451 452 453 454 455
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.

456 457 458 459
*** 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.
460

461
** Improved GTK integration
462

463
*** GTK scroll-bars are now placed on the right by default.
464 465
The function `set-scroll-bar-mode' can change this.

466
*** GTK tool bars can have just text, just images or images and text.
467 468 469 470
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.
471 472 473
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.
474

475 476
*** The default colors for selected text (the `region' face) are taken
from the GTK theme when Emacs is built with GTK.
477

478 479
*** Emacs uses GTK tooltips by default if built with GTK.
You can disable this by changing `x-gtk-use-system-tooltips' to nil.
480

481 482 483 484 485 486 487 488 489 490 491 492 493
** 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

494
** Exiting changes
495

496
*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
497 498
or if it receives a SIGINT signal in batch mode.

499 500 501
*** `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.
502

Chong Yidong's avatar
Chong Yidong committed
503
** Scrolling changes
504

Chong Yidong's avatar
Chong Yidong committed
505
*** New scrolling commands `scroll-up-command' and `scroll-down-command'
Juanma Barranquero's avatar
Juanma Barranquero committed
506
(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
507
of buffer at first key-press (instead they move to top/bottom of buffer)
508
when `scroll-error-top-bottom' is non-nil.
509 510 511

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

Chong Yidong's avatar
Chong Yidong committed
512
*** New scrolling commands `scroll-up-line' and `scroll-down-line'
513
scroll a line instead of full screen.
514

Chong Yidong's avatar
Chong Yidong committed
515
*** New property `scroll-command' should be set on a command's symbol to
Esa Peuha's avatar
Esa Peuha committed
516
define it as a scroll command affected by `scroll-preserve-screen-position'.
517

Chong Yidong's avatar
Chong Yidong committed
518
*** If you customize `scroll-conservatively' to a value greater than 100,
519 520 521 522
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.
523

524
*** "Aggressive" scrolling now honors the scroll margins.
525 526 527 528 529
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.

530 531
** Basic SELinux support has been added.
This requires Emacs to be linked with libselinux at build time.
532

533 534 535 536
*** 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.
537

538
*** New functions `file-selinux-context' and `set-file-selinux-context'
539
get and set the SELinux context of a file.
540

541
** Trash changes
542

543 544
*** `delete-by-moving-to-trash' now only affects commands that specify
trashing.  This avoids inadvertently trashing temporary files.
545

546 547
*** Calling `delete-file' or `delete-directory' with a prefix argument
now forces true deletion, regardless of `delete-by-moving-to-trash'.
548

Chong Yidong's avatar
Chong Yidong committed
549
** File- and directory-local variable changes
550

Chong Yidong's avatar
Chong Yidong committed
551 552 553 554
*** 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.
555

Chong Yidong's avatar
Chong Yidong committed
556 557 558 559 560
*** 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.
561

Chong Yidong's avatar
Chong Yidong committed
562 563
*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
Instead, use "eval: (minor-mode 1)".
Glenn Morris's avatar
Glenn Morris committed
564

Glenn Morris's avatar
Glenn Morris committed
565 566
*** The variable `inhibit-first-line-modes-regexps' has been renamed
to `inhibit-local-variables-regexps'.  As the name suggests, it now
567 568 569
applies to ALL file local variables, not just -*- lines.  The
associated `inhibit-first-line-modes-suffixes' has been renamed in the
corresponding way.
570

571 572
** Window changes

573 574 575
*** The `quit-window' command now restores the last buffer displayed
in the quitted window.

576 577 578 579
*** 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.
580

581 582 583 584 585 586 587 588 589 590
**** 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'.

591 592 593 594
*** 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.
595

596 597 598 599 600
*** 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.
601

602 603 604 605
*** 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.

606
*** New commands `maximize-window' and `minimize-window'.
Paul Eggert's avatar
Paul Eggert committed
607
These maximize and minimize the size of a window within its frame.
608 609 610 611 612

*** 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.

613
** Minibuffer changes
614

615
*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
616 617
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
618

619
*** Minibuffers set `truncate-lines' to nil.
Glenn Morris's avatar
NEWS  
Glenn Morris committed
620
If you want to change the value to something else, you could use
621 622 623 624 625
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
626

627 628 629 630 631 632 633 634 635
** 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.

636

637
* Editing Changes in Emacs 24.1
638

639
** Search changes
640 641 642 643 644 645 646 647 648

*** 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'.

649
** New commands `count-words-region' and `count-words'.
650

651 652 653 654 655
*** 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
656

657
** The command `just-one-space' (M-SPC), if given a negative argument,
658 659
also deletes newlines around point.

660
** Deletion changes
661

662
*** New option `delete-active-region'.
663
If non-nil, [delete] and DEL delete the region if it is active and no
664
prefix argument is given.  If set to `kill', those commands kill
665
instead.
666

667
*** New command `delete-forward-char', bound to [delete].
668 669
This is meant for interactive use, and obeys `delete-active-region'.
The command `delete-char' does not obey `delete-active-region'.
670

671 672
*** `delete-backward-char' is now a Lisp function.
Apart from obeying `delete-active-region', its behavior is unchanged.
673 674
However, the byte compiler now warns if it is called from Lisp; Lisp
callers should use delete-char with a negative argument instead.
675

676 677
*** The option `mouse-region-delete-keys' has been deleted.

678 679
** Selection changes.

680 681 682 683
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.
684 685 686 687 688 689

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
690
the kill ring.  The selected text is put in the primary selection, if
691 692 693 694 695 696 697 698
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.

699 700
**** `mouse-drag-copy-region' now defaults to nil.

701 702 703
*** 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'.
704

705
*** `x-select-enable-clipboard' now defaults to t on all platforms.
706

707 708 709 710 711
*** `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
712
exactly equivalent to M-w, C-w, and C-y respectively.
713 714 715 716 717 718

**** 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:
719

720
**** Change `select-active-regions' to nil.
721 722 723 724
**** 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.
725

726
*** Support for X cut buffers has been removed.
727

728 729
*** X clipboard managers are now supported.
To inhibit this, change `x-select-enable-clipboard-manager' to nil.
730

731 732 733
** 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.
734

735
** `redisplay-dont-pause' now defaults to t.
736 737 738 739 740
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.

741 742 743 744 745 746
** 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).

747 748 749 750 751 752
** 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'.

753

754
* Changes in Specialized Modes and Packages in Emacs 24.1
755

Chong Yidong's avatar
Chong Yidong committed
756
** Archive Mode has basic support for browsing and updating 7z archives.
757

758
** BibTeX mode
759

760
*** BibTeX mode now supports biblatex.
761 762 763 764
Use the variable `bibtex-dialect' to select different BibTeX dialects.
`bibtex-entry-field-alist' is now an obsolete alias for
`bibtex-BibTeX-entry-alist'.

765 766
*** New command `bibtex-search-entries', bound to C-c C-a.

767
*** New `bibtex-entry-format' option `sort-fields', disabled by default.
768

769 770
*** New variable `bibtex-search-entry-globally'.

771
** Browse-url
772

773
*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
774

775 776 777
*** 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
778 779
** Calendar, Diary, and Appt

780
*** Diary entries can contain non-printing "comments".
Glenn Morris's avatar
Glenn Morris committed
781 782
See the variable `diary-comment-start'.

783 784 785
*** Appointments can specify their individual warning times.
See the variable `appt-warning-time-regexp'.

786 787 788 789
*** 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.

790 791
*** New function `diary-hebrew-birthday'.

792 793 794
*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
may no longer be nil, but must all be strings.

795 796 797
*** 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
798 799 800 801 802 803 804 805

*** 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
806
** CC Mode
807

Alan Mackenzie's avatar
Alan Mackenzie committed
808
*** New feature to "guess" the style in an existing buffer.
809
The main entry point is M-x c-guess.
Chong Yidong's avatar
Chong Yidong committed
810

Alan Mackenzie's avatar
Alan Mackenzie committed
811 812
*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).

813
*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
Alan Mackenzie's avatar
Alan Mackenzie committed
814 815 816
Thus C-M-a will, by default, go to the beginning of the immediate function,
not the top level.

817
*** "Macros with semicolons" can be registered for correct indentation.
Alan Mackenzie's avatar
Alan Mackenzie committed
818 819 820
Where such a macro ends a line (no semicolon) the next statement is no longer
parsed as a statement continuation.

821
** Comint and modes derived from it use the standard completion code.
Chong Yidong's avatar
Chong Yidong committed
822 823

** Compilation mode
824

825
*** Compilation mode can be used without Font Lock mode.
Chong Yidong's avatar
Chong Yidong committed
826 827
`compilation-parse-errors-function' is now obsolete.

828
*** New variable `compilation-filter-start', which is bound while
829 830
`compilation-filter-hook' runs.  It records the start position of the
text inserted by `compilation-filter'.
Chong Yidong's avatar
Chong Yidong committed
831

832 833
*** `compilation-error-screen-columns' and `compilation-first-column'
are obeyed in the editing buffer.  So programming language modes can
834 835
set them, whereas previously only the value in the *Compilation*
buffer was used.
836

837 838 839 840
** Customize

*** Customize buffers now contain a search field.
The search is performed using `customize-apropos'.
841
To turn off the search field, set `custom-search-field' to nil.
842 843 844 845 846 847 848

*** 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
849
choose a color via `list-colors-display'.
850

Chong Yidong's avatar
Chong Yidong committed
851 852
** D-Bus

Glenn Morris's avatar
Glenn Morris committed
853 854
*** It is now possible to access buses other than the default system
or session bus.
Chong Yidong's avatar
Chong Yidong committed
855

856
*** The `dbus-register-method' and `dbus-register-property' functions
Glenn Morris's avatar
Glenn Morris committed
857
optionally do not register names.
Chong Yidong's avatar
Chong Yidong committed
858

859
*** The new function `dbus-register-service' registers a known service
860
name on a D-Bus without also registering a property or a method.
Chong Yidong's avatar
Chong Yidong committed
861

862
** Dired-x
Michael Albinus's avatar
Michael Albinus committed
863

864 865 866
*** 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.
867

868
*** The "dired local variables" feature of Dired-x is obsolete.
869
The standard directory local variables feature replaces it.
870

Chong Yidong's avatar
Chong Yidong committed
871
** ERC changes
Michael Mauger's avatar
Michael Mauger committed
872

873 874
*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
controlling attempts to autojoin a channel.
Chong Yidong's avatar
Chong Yidong committed
875 876 877 878 879

*** 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
880

Chong Yidong's avatar
Chong Yidong committed
881
** Eshell changes
Michael Mauger's avatar
Michael Mauger committed
882

Glenn Morris's avatar
Glenn Morris committed
883 884 885
*** 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
886 887

** gdb-mi
888 889

*** The M-x gdb command now uses the GDB Machine Interface protocol.
Glenn Morris's avatar
Glenn Morris committed
890 891
It now supports multithread non-stop debugging and simultaneous
debugging of several threads.
Michael Mauger's avatar
Michael Mauger committed
892

893 894
** Image mode

Glenn Morris's avatar
Glenn Morris committed
895 896
*** RET (`image-toggle-animation') toggles animation, if applicable.
Animation plays once, unless the option `image-animate-loop' is non-nil.
897

Chong Yidong's avatar
Chong Yidong committed
898
** Info
899

900
*** New command M-x info-display-manual displays a named Info manual.
901 902 903 904
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.
905

906 907 908 909 910
*** `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.

911
** Mail mode changes (not Message mode)
912

913 914
*** New command M-x mail-add-attachment for adding MIME attachments

915 916 917 918
*** 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.

919
** MH-E has been updated to MH-E version 8.3.1.
Chong Yidong's avatar
Chong Yidong committed
920
See MH-E-NEWS for details.
921

Chong Yidong's avatar
Chong Yidong committed
922
** Modula-2 mode provides auto-indentation.
923

Chong Yidong's avatar
Chong Yidong committed
924
** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
925

926
** nXML mode no longer binds C-RET to `nxml-complete'.
927 928 929
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.
930

931 932 933
** Org mode has been updated to version 7.8.09.
See ORG-NEWS for details.

Chong Yidong's avatar
Chong Yidong committed
934
** Prolog mode has been completely revamped, with lots of additional
935 936
functionality such as more intelligent indentation, electricity,
support for more variants, including Mercury, and a lot more.
Chong Yidong's avatar
Chong Yidong committed
937 938 939 940 941 942

** Rmail

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

943 944 945 946
*** 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.

947
** Shell mode
948 949 950 951 952 953 954

*** 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.
955

956 957
** SMTPmail