NEWS 63.2 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.

Glenn Morris's avatar
Glenn Morris committed
35 36

* Startup Changes in Emacs 24.2
37 38 39 40 41

** 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
42 43 44

* Changes in Emacs 24.2

45 46 47
** 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
48 49 50
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about which bzr revision was used.

51 52 53 54 55 56 57 58
** 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

59 60 61 62
** 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
63 64

* Editing Changes in Emacs 24.2
65 66 67 68

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

69 70 71
** `mouse-avoidance-banish-position' can now be used to customize
`mouse-avoidance-mode' further.

72 73 74
** `C-M-f' and `C-M-b' will now move to the path name separator
character when doing minibuffer filename prompts.

75 76
** `goto-char' is now bound to `M-g c'.

Glenn Morris's avatar
Glenn Morris committed
77 78

* Changes in Specialized Modes and Packages in Emacs 24.2
79

80 81
** 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'.
82

Chong Yidong's avatar
Chong Yidong committed
83 84 85 86 87 88 89 90 91
** 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.).

92 93 94
** Customize

*** `custom-reset-button-menu' now defaults to t.
95

96 97 98 99
*** Non-option variables are never matched in `customize-apropos' and
`customize-apropos-options' (i.e. the prefix argument does nothing for
these commands now).

100
** erc will look up server/channel names via auth-source and use the
101
channel keys found, if any.
102

103 104
** The `server-auth-key' variable can be used to set a permanent
shared key for Emacs Server.
105 106 107 108

** 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
109 110
** FIXME something happened to ses.el, 2012-04-17.

111 112
** which-function-mode now applies to all applicable major modes by default.

113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
** 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'.

143 144 145 146 147
+++
** 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
148 149
** Obsolete packages:

150 151 152 153 154
*** 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.

Glenn Morris's avatar
Glenn Morris committed
155
*** mailpost.el
156 157 158

*** mouse-sel.el

Glenn Morris's avatar
Glenn Morris committed
159 160 161 162

* New Modes and Packages in Emacs 24.2

* Incompatible Lisp Changes in Emacs 24.2
163 164 165 166 167 168 169

+++
** 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'.

170 171 172
** `face-spec-set' no longer sets frame-specific attributes when the
third argument is a frame (that usage was obsolete since Emacs 22.2).

173 174 175 176 177
+++
** 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
178 179

* Lisp changes in Emacs 24.2
180 181 182 183 184 185 186 187

** 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.
188 189 190 191 192 193 194 195

* 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.

196

197
* Installation Changes in Emacs 24.1
Chong Yidong's avatar
Chong Yidong committed
198

199 200 201 202
** 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.
203

204 205 206 207
** 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.
208

209 210 211 212
** 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
213

214 215 216 217
** 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
218
This feature is not available for the Nextstep or MS ports.
219

220 221 222 223 224
** 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.

225 226 227 228
** 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
229
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
230 231
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
232

233
** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
234 235 236
These provide no new functionality, they just remove the need to edit
lib-src/Makefile by hand in order to use the associated features.

237
** New configure option --enable-use-lisp-union-type.
238 239
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
240 241 242 243 244 245 246

** 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.

247

248
* Startup Changes in Emacs 24.1
249

250
** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
Glenn Morris's avatar
Glenn Morris committed
251 252
command line arguments, and the EMACS_UNIBYTE environment variable, no
longer have any effect.  (They were declared obsolete in Emacs 23.)
253

254
** New command line option `--no-site-lisp' removes site-lisp directories
255 256
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
257
Nextstep builds).
258

259

260
* Changes in Emacs 24.1
261

262
** Completion
263

264 265 266
*** Many packages now use the `completion-at-point' command,
rather than implementing separate completion commands.

267
*** `completion-at-point' now handles tags and semantic completion.
268

269 270
*** Completion in a non-minibuffer now tries to detect the end of completion
and pops down the *Completions* buffer accordingly.
271 272 273 274

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

*** New option `completion-category-overrides' for overriding the
275
default completion style in certain circumstances.
276

277
*** New completion style `substring'.
278 279 280 281

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

*** The option `widget-complete-field' has been removed.
282

283
** Mail changes
284

285 286 287 288 289 290
*** 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).
291

292 293 294
*** 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.
295

296 297
*** See Changes in Specialized Modes and Packages for SMTPmail changes
and Mail mode changes
Glenn Morris's avatar
Glenn Morris committed
298

Chong Yidong's avatar
Chong Yidong committed
299
** Emacs server and client changes
300

301
*** New option `server-port' specifies the port for TCP Emacs servers.
302

Chong Yidong's avatar
Chong Yidong committed
303
*** New emacsclient argument -q/--quiet suppresses some status messages.
304

305 306
*** New emacsclient argument --frame-parameters specifies the frame
parameters of any newly-created graphical frame.
307 308 309 310

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

Chong Yidong's avatar
Chong Yidong committed
311 312 313 314
*** 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.

315 316 317
** Internationalization changes

*** Emacs now supports display and editing of bidirectional text.
318 319
Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
displayed in the correct visual order as expected by users of those
320 321 322
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.
323

Chong Yidong's avatar
Chong Yidong committed
324
**** New buffer-local variable `bidi-display-reordering'.
325
To disable display reordering in a buffer, change this to nil.
326

Chong Yidong's avatar
Chong Yidong committed
327 328
**** New buffer-local variable `bidi-paragraph-direction'.
If nil (the default), Emacs determines the base direction of each
329 330 331
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.
332

333 334
Paragraphs with right-to-left base direction are displayed starting at
the right window edge.
335

336 337 338 339 340
*** 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.
341

342
*** New input methods: farsi, farsi-translit, bulgarian-alt-phonetic.
Chong Yidong's avatar
Chong Yidong committed
343

344 345 346
*** `nobreak-char-display' now also highlights Unicode hyphen chars
(U+2010 and U+2011).

347
*** New Hebrew translation of the Emacs Tutorial.
348 349 350
Type `C-u C-h t' to choose it in case your language setup doesn't
automatically select it.

351 352 353
** 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.
354

355 356
*** M-x list-packages shows a list of packages, which can be
selected for installation.
357

358
*** New command `describe-package', bound to `C-h P'.
359

360 361 362
*** 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
363

364 365
** Custom theme changes

366 367
*** New command `M-x customize-themes', which provides a convenient
interface for enabling and disabling Custom themes.
368

369
*** New option `custom-theme-load-path' is the load path for themes.
370 371 372 373 374 375
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.

376 377 378 379
*** 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.
380

381
** Improved GTK integration
382

383
*** GTK scroll-bars are now placed on the right by default.
384 385
The function `set-scroll-bar-mode' can change this.

386
*** GTK tool bars can have just text, just images or images and text.
387 388 389 390
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.
391 392 393
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.
394

395 396
*** The default colors for selected text (the `region' face) are taken
from the GTK theme when Emacs is built with GTK.
397

398 399
*** Emacs uses GTK tooltips by default if built with GTK.
You can disable this by changing `x-gtk-use-system-tooltips' to nil.
400

401 402 403 404 405 406 407 408 409 410 411 412 413
** 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

414
** Exiting changes
415

416
*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
417 418
or if it receives a SIGINT signal in batch mode.

419 420 421
*** `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.
422

Chong Yidong's avatar
Chong Yidong committed
423
** Scrolling changes
424

Chong Yidong's avatar
Chong Yidong committed
425
*** New scrolling commands `scroll-up-command' and `scroll-down-command'
Juanma Barranquero's avatar
Juanma Barranquero committed
426
(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
427
of buffer at first key-press (instead they move to top/bottom of buffer)
428
when `scroll-error-top-bottom' is non-nil.
429 430 431

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

Chong Yidong's avatar
Chong Yidong committed
432
*** New scrolling commands `scroll-up-line' and `scroll-down-line'
433
scroll a line instead of full screen.
434

Chong Yidong's avatar
Chong Yidong committed
435
*** New property `scroll-command' should be set on a command's symbol to
Esa Peuha's avatar
Esa Peuha committed
436
define it as a scroll command affected by `scroll-preserve-screen-position'.
437

Chong Yidong's avatar
Chong Yidong committed
438
*** If you customize `scroll-conservatively' to a value greater than 100,
439 440 441 442
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.
443

444
*** "Aggressive" scrolling now honors the scroll margins.
445 446 447 448 449
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.

450 451
** Basic SELinux support has been added.
This requires Emacs to be linked with libselinux at build time.
452

453 454 455 456
*** 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.
457

458
*** New functions `file-selinux-context' and `set-file-selinux-context'
459
get and set the SELinux context of a file.
460

461
** Trash changes
462

463 464
*** `delete-by-moving-to-trash' now only affects commands that specify
trashing.  This avoids inadvertently trashing temporary files.
465

466 467
*** Calling `delete-file' or `delete-directory' with a prefix argument
now forces true deletion, regardless of `delete-by-moving-to-trash'.
468

Chong Yidong's avatar
Chong Yidong committed
469
** File- and directory-local variable changes
470

Chong Yidong's avatar
Chong Yidong committed
471 472 473 474
*** 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.
475

Chong Yidong's avatar
Chong Yidong committed
476 477 478 479 480
*** 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.
481

Chong Yidong's avatar
Chong Yidong committed
482 483
*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
Instead, use "eval: (minor-mode 1)".
Glenn Morris's avatar
Glenn Morris committed
484

Glenn Morris's avatar
Glenn Morris committed
485 486
*** The variable `inhibit-first-line-modes-regexps' has been renamed
to `inhibit-local-variables-regexps'.  As the name suggests, it now
487 488 489
applies to ALL file local variables, not just -*- lines.  The
associated `inhibit-first-line-modes-suffixes' has been renamed in the
corresponding way.
490

491 492
** Window changes

493 494 495
*** The `quit-window' command now restores the last buffer displayed
in the quitted window.

496 497 498 499
*** 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.
500

501 502 503 504 505 506 507 508 509 510
**** 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'.

511 512 513 514
*** 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.
515

516 517 518 519 520
*** 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.
521

522 523 524 525
*** 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.

526
*** New commands `maximize-window' and `minimize-window'.
Paul Eggert's avatar
Paul Eggert committed
527
These maximize and minimize the size of a window within its frame.
528 529 530 531 532

*** 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.

533
** Minibuffer changes
534

535
*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
536 537
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
538

539
*** Minibuffers set `truncate-lines' to nil.
Glenn Morris's avatar
NEWS  
Glenn Morris committed
540
If you want to change the value to something else, you could use
541 542 543 544 545
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
546

547 548 549 550 551 552 553 554 555
** 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.

556

557
* Editing Changes in Emacs 24.1
558

559
** Search changes
560 561 562 563 564 565 566 567 568

*** 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'.

569
** New commands `count-words-region' and `count-words'.
570

571 572 573 574 575
*** 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
576

577
** The command `just-one-space' (M-SPC), if given a negative argument,
578 579
also deletes newlines around point.

580
** Deletion changes
581

582
*** New option `delete-active-region'.
583
If non-nil, [delete] and DEL delete the region if it is active and no
584
prefix argument is given.  If set to `kill', those commands kill
585
instead.
586

587
*** New command `delete-forward-char', bound to [delete].
588 589
This is meant for interactive use, and obeys `delete-active-region'.
The command `delete-char' does not obey `delete-active-region'.
590

591 592
*** `delete-backward-char' is now a Lisp function.
Apart from obeying `delete-active-region', its behavior is unchanged.
593 594
However, the byte compiler now warns if it is called from Lisp; Lisp
callers should use delete-char with a negative argument instead.
595

596 597
*** The option `mouse-region-delete-keys' has been deleted.

598 599
** Selection changes.

600 601 602 603
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.
604 605 606 607 608 609

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
610
the kill ring.  The selected text is put in the primary selection, if
611 612 613 614 615 616 617 618
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.

619 620
**** `mouse-drag-copy-region' now defaults to nil.

621 622 623
*** 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'.
624

625
*** `x-select-enable-clipboard' now defaults to t on all platforms.
626

627 628 629 630 631
*** `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
632
exactly equivalent to M-w, C-w, and C-y respectively.
633 634 635 636 637 638

**** 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:
639

640
**** Change `select-active-regions' to nil.
641 642 643 644
**** 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.
645

646
*** Support for X cut buffers has been removed.
647

648 649
*** X clipboard managers are now supported.
To inhibit this, change `x-select-enable-clipboard-manager' to nil.
650

651 652 653
** 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.
654

655
** `redisplay-dont-pause' now defaults to t.
656 657 658 659 660
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.

661 662 663 664 665 666
** 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).

667 668 669 670 671 672
** 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'.

673

674
* Changes in Specialized Modes and Packages in Emacs 24.1
675

Chong Yidong's avatar
Chong Yidong committed
676
** Archive Mode has basic support for browsing and updating 7z archives.
677

678
** BibTeX mode
679

680
*** BibTeX mode now supports biblatex.
681 682 683 684
Use the variable `bibtex-dialect' to select different BibTeX dialects.
`bibtex-entry-field-alist' is now an obsolete alias for
`bibtex-BibTeX-entry-alist'.

685 686
*** New command `bibtex-search-entries', bound to C-c C-a.

687
*** New `bibtex-entry-format' option `sort-fields', disabled by default.
688

689 690
*** New variable `bibtex-search-entry-globally'.

691
** Browse-url
692

693
*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
694

695 696 697
*** 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
698 699
** Calendar, Diary, and Appt

700
*** Diary entries can contain non-printing "comments".
Glenn Morris's avatar
Glenn Morris committed
701 702
See the variable `diary-comment-start'.

703 704 705
*** Appointments can specify their individual warning times.
See the variable `appt-warning-time-regexp'.

706 707 708 709
*** 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.

710 711
*** New function `diary-hebrew-birthday'.

712 713 714
*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
may no longer be nil, but must all be strings.

715 716 717
*** 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
718 719 720 721 722 723 724 725

*** 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
726
** CC Mode
727

Alan Mackenzie's avatar
Alan Mackenzie committed
728
*** New feature to "guess" the style in an existing buffer.
729
The main entry point is M-x c-guess.
Chong Yidong's avatar
Chong Yidong committed
730

Alan Mackenzie's avatar
Alan Mackenzie committed
731 732
*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).

733
*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
Alan Mackenzie's avatar
Alan Mackenzie committed
734 735 736
Thus C-M-a will, by default, go to the beginning of the immediate function,
not the top level.

737
*** "Macros with semicolons" can be registered for correct indentation.
Alan Mackenzie's avatar
Alan Mackenzie committed
738 739 740
Where such a macro ends a line (no semicolon) the next statement is no longer
parsed as a statement continuation.

741
** Comint and modes derived from it use the standard completion code.
Chong Yidong's avatar
Chong Yidong committed
742 743

** Compilation mode
744

745
*** Compilation mode can be used without Font Lock mode.
Chong Yidong's avatar
Chong Yidong committed
746 747
`compilation-parse-errors-function' is now obsolete.

748
*** New variable `compilation-filter-start', which is bound while
749 750
`compilation-filter-hook' runs.  It records the start position of the
text inserted by `compilation-filter'.
Chong Yidong's avatar
Chong Yidong committed
751

752 753
*** `compilation-error-screen-columns' and `compilation-first-column'
are obeyed in the editing buffer.  So programming language modes can
754 755
set them, whereas previously only the value in the *Compilation*
buffer was used.
756

757 758 759 760
** Customize

*** Customize buffers now contain a search field.
The search is performed using `customize-apropos'.
761
To turn off the search field, set `custom-search-field' to nil.
762 763 764 765 766 767 768

*** 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
769
choose a color via `list-colors-display'.
770

Chong Yidong's avatar
Chong Yidong committed
771 772
** D-Bus

Glenn Morris's avatar
Glenn Morris committed
773 774
*** It is now possible to access buses other than the default system
or session bus.
Chong Yidong's avatar
Chong Yidong committed
775

776
*** The `dbus-register-method' and `dbus-register-property' functions
Glenn Morris's avatar
Glenn Morris committed
777
optionally do not register names.
Chong Yidong's avatar
Chong Yidong committed
778

779
*** The new function `dbus-register-service' registers a known service
780
name on a D-Bus without also registering a property or a method.
Chong Yidong's avatar
Chong Yidong committed
781

782
** Dired-x
Michael Albinus's avatar
Michael Albinus committed
783

784 785 786
*** 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.
787

788
*** The "dired local variables" feature of Dired-x is obsolete.
789
The standard directory local variables feature replaces it.
790

Chong Yidong's avatar
Chong Yidong committed
791
** ERC changes
Michael Mauger's avatar
Michael Mauger committed
792

793 794
*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
controlling attempts to autojoin a channel.
Chong Yidong's avatar
Chong Yidong committed
795 796 797 798 799

*** 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
800

Chong Yidong's avatar
Chong Yidong committed
801
** Eshell changes
Michael Mauger's avatar
Michael Mauger committed
802

Glenn Morris's avatar
Glenn Morris committed
803 804 805
*** 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
806 807

** gdb-mi
808 809

*** The M-x gdb command now uses the GDB Machine Interface protocol.
Glenn Morris's avatar
Glenn Morris committed
810 811
It now supports multithread non-stop debugging and simultaneous
debugging of several threads.
Michael Mauger's avatar
Michael Mauger committed
812

813 814
** Image mode

Glenn Morris's avatar
Glenn Morris committed
815 816
*** RET (`image-toggle-animation') toggles animation, if applicable.
Animation plays once, unless the option `image-animate-loop' is non-nil.
817

Chong Yidong's avatar
Chong Yidong committed
818
** Info
819

820
*** New command M-x info-display-manual displays a named Info manual.
821 822 823 824
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.
825

826 827 828 829 830
*** `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.

831
** Mail mode changes (not Message mode)
832

833 834
*** New command M-x mail-add-attachment for adding MIME attachments

835 836 837 838
*** 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.

839
** MH-E has been updated to MH-E version 8.3.1.
Chong Yidong's avatar
Chong Yidong committed
840
See MH-E-NEWS for details.
841

Chong Yidong's avatar
Chong Yidong committed
842
** Modula-2 mode provides auto-indentation.
843

Chong Yidong's avatar
Chong Yidong committed
844
** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
845

846
** nXML mode no longer binds C-RET to `nxml-complete'.
847 848 849
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.
850

851 852 853
** Org mode has been updated to version 7.8.09.
See ORG-NEWS for details.

Chong Yidong's avatar
Chong Yidong committed
854
** Prolog mode has been completely revamped, with lots of additional
855 856
functionality such as more intelligent indentation, electricity,
support for more variants, including Mercury, and a lot more.
Chong Yidong's avatar
Chong Yidong committed
857 858 859 860 861 862

** Rmail

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

863 864 865 866
*** 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.

867
** Shell mode
868 869 870 871 872 873 874

*** 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.
875

876 877
** SMTPmail

878
*** SMTPmail now uses encrypted connections (via STARTTLS) by default
879 880 881 882 883 884
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.
885 886 887 888 889 890
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
891 892 893 894 895 896 897 898 899 900 901 902

  (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.
903
If you had that set, you need to put
904 905 906 907 908

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

in your ~/.authinfo file instead.

909
** SQL mode
Chong Yidong's avatar
Chong Yidong committed
910

911 912
*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
and `sql-oracle-scan-on'.
Chong Yidong's avatar
Chong Yidong committed
913

914
*** New options controlling prompting for login parameters.
915 916 917
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
918 919

*** The command `sql-product-interactive' now takes a prefix argument,
920
which causes it to prompt for an SQL product.
Chong Yidong's avatar
Chong Yidong committed
921

922
*** Product-specific SQL interactive commands now take prefix arguments.
Chong Yidong's avatar
Chong Yidong committed
923 924 925 926 927 928 929 930
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
931 932
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
933 934 935 936 937 938 939 940

*** 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.

941 942
*** New commands for listing database objects and details:
sql-list-all and sql-list-table.
Chong Yidong's avatar
Chong Yidong committed
943 944 945 946 947 948

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

** TeX modes

*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
949

950