NEWS 77.4 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

Glenn Morris's avatar
Glenn Morris committed
3
Copyright (C) 2007, 2008, 2009 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 emacs-pretest-bug@gnu.org.
7 8
If possible, use M-x report-emacs-bug.

9
This file is about changes in Emacs version 23.
10

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

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

17 18 19 20 21 22 23 24 25 26

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.


* Changes in Emacs 23.2

27 28 29 30 31 32
** The default value of `trash-directory' has changed to nil, which
means that `move-file-to-trash' trashes files according to
freedesktop.org specifications, the same method used by the Gnome,
KDE, and XFCE desktops.  (This change has no effect on Windows, which
uses `system-move-file-to-trash' for trashing.)

33 34 35 36 37
+++
** Emacs frames can be maximized.
The command line arguments -mm/--maximized and the value maximized to the
frame parameter fullscreen makes the Emacs frame maximized.

Jan Djärv's avatar
Jan Djärv committed
38 39 40
+++
** New frame parameter sticky makes Emacs frames sticky in virtual desktops.

41 42 43
** The pointer now becomes invisible when typing.
Customize make-pointer-invisible to turn it off.

44 45 46 47
---
** On MS-Windows, `display-time' now displays the system load average
as well as the time, as it does on GNU and Unix.

48 49 50 51 52 53 54 55

** configure options for emacs developers
*** --enable-profiling will build emacs with profiling enabled.
This might not work on all platforms.  It is not a new feature, just
the configure flag is new.

*** --enable-checking[=OPTIONS] will build emacs with various extra runtime checks.
It is not a new feature, just the configure flag is new.
Glenn Morris's avatar
Glenn Morris committed
56

57 58 59

* Changes in Specialized Modes and Packages in Emacs 23.2

Glenn Morris's avatar
Glenn Morris committed
60 61
** FIXME gdb-mi

62 63 64 65 66
** Info

*** The new command `Info-virtual-index' bound to "I" displays a menu of
matched topics found in the index.

Juri Linkov's avatar
Juri Linkov committed
67 68 69 70
*** The new command `info-finder' replaces finder.el with a virtual Info
manual that generates an Info file which gives the same information
through a menu structure.

71 72 73
+++
** New connection methods in Tramp.
On systems which support GVFS-Fuse, Tramp offers the new connection
74
methods "dav", "davs", "obex" and "synce".
75

76 77 78 79
** VC and related modes

*** When a file is not found, VC will not try to check it out of RCS anymore.

Glenn Morris's avatar
Glenn Morris committed
80 81 82 83 84 85
** Calendar and diary

---
*** The command `calendar-current-date' accepts an optional argument
giving an offset from today.

86 87 88
** Desktop

---
89 90 91 92 93 94
*** The default value for `desktop-buffers-not-to-save' is nil.
This means Desktop will try restoring all buffers, when you restart
your Emacs session.  Also, `desktop-buffers-not-to-save' is only
effective for buffers that have no associated file.  If you want to
exempt buffers that do correspond to files, customize the value of
`desktop-files-not-to-save' instead.
95

96 97 98 99 100 101 102
** Miscellaneous

*** The new command `async-shell-command' bound globally to `M-&' executes
the command asynchronously without the need to manually add ampersand to
the end of the command.  Its output appears in the buffer `*Async Shell
Command*'.

103

104
* Installation Changes in Emacs 23.1
105

106
** The default X toolkit is now Gtk+, rather than Lucid.
Chong Yidong's avatar
Chong Yidong committed
107 108
The configure option `--with-gtk' has been removed.  Gtk is now the
default toolkit, but you can use --with-x-toolkit=gtk if necessary.
109

Chong Yidong's avatar
Chong Yidong committed
110 111
** New font code.
Fonts are handled by new code capable of dealing with multiple font
112
backends.  This uses the freetype and fontconfig libraries.
113

Chong Yidong's avatar
Chong Yidong committed
114 115
*** Emacs now accepts font names supplied in the fontconfig format
(e.g. "monospace-12:bold") and GTK format (e.g. "Monospace Bold 12").
Dan Nicolaescu's avatar
Dan Nicolaescu committed
116

Chong Yidong's avatar
Chong Yidong committed
117 118 119 120 121 122 123 124 125
*** Added support for local fonts (fonts installed on the machine
where Emacs is running).

*** Added support for the Xft library for antialiasing.

*** Added support for the otf library for complex text layout by
OpenType fonts.

*** Added support for the m17n library for text shaping.
126

Chong Yidong's avatar
Chong Yidong committed
127
** Changes to image support
128

Chong Yidong's avatar
Chong Yidong committed
129
*** configure now checks for libgif before libungif when searching for
130
a GIF library.
131

Chong Yidong's avatar
Chong Yidong committed
132 133
*** Emacs now supports the SVG image format through librsvg2.

Jason Rumney's avatar
Jason Rumney committed
134 135
*** Emacs now supports multi-page TIFF images.

Chong Yidong's avatar
Chong Yidong committed
136
** New NeXTSTEP-based port
Glenn Morris's avatar
Glenn Morris committed
137
This provides support for GNUstep (via the GNUstep libraries) and Mac
Michael Albinus's avatar
Michael Albinus committed
138
OS X (via the Cocoa libraries).
139

Glenn Morris's avatar
Glenn Morris committed
140
Specify --with-ns to configure for this.  By default, a self-contained
141 142 143
app will be built (containing all lisp).  To install/share lisp with
other emacsen (e.g. X11 build) use --disable-ns-self-contained.  See
nextstep/README and nextstep/INSTALL in the Emacs source directory.
Chong Yidong's avatar
Chong Yidong committed
144 145 146

** Mac OS X is no longer supported via Carbon.
Use the NeXTSTEP port, described above.
Glenn Morris's avatar
Glenn Morris committed
147

Chong Yidong's avatar
Chong Yidong committed
148 149
** The new configuration option "--with-dbus" enables D-Bus language
bindings for Emacs.
150

151 152
** Support for many obsolete platforms has been removed.
See the list at the end of etc/MACHINES for details.
153

Chong Yidong's avatar
Chong Yidong committed
154
*** Support for systems without alloca has been removed.
155

Chong Yidong's avatar
Chong Yidong committed
156
*** Support for Sun windows has been removed.
157

Chong Yidong's avatar
Chong Yidong committed
158
*** The `emacstool' utility has been removed.
Chong Yidong's avatar
Chong Yidong committed
159

Chong Yidong's avatar
Chong Yidong committed
160
** The following platforms will be removed in a future Emacs version:
161 162
If you are still using Emacs on one of these platforms, please email
emacs-devel@gnu.org to inform the Emacs developers.
Chong Yidong's avatar
Chong Yidong committed
163

164
*** Old GNU/Linux systems based on libc version 5.
Chong Yidong's avatar
Chong Yidong committed
165

166 167
*** Old FreeBSD, NetBSD, and OpenBSD systems based on the COFF
    executable format.
Chong Yidong's avatar
Chong Yidong committed
168 169 170

*** Solaris versions 2.6 and below.

171 172 173 174
*** Solaris on IBM RS6000 machines.

*** UNIX System V (the original SysV, not later platforms based on it).

175 176
*** Unixware on non-x86 machines.

177 178
*** Platforms not supporting shared libraries (i.e., requiring the
NO_SHARED_LIBS compilation flag).
Chong Yidong's avatar
Chong Yidong committed
179

180 181 182 183
** The configure options `--with-gcc', `--without-gcc' have been removed.
Configure will use gcc by default.  Set the CC environment variable if
you need control over which C compiler is used.

Chong Yidong's avatar
Chong Yidong committed
184 185
** The refcards are now shipped as PDF files.

Glenn Morris's avatar
Glenn Morris committed
186 187 188
** The manuals are now licensed under the GNU Free Documentation License v1.3,
or any later version.

Chong Yidong's avatar
Chong Yidong committed
189 190 191
** Emacs 23 comes with a new set of default icons.
Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
The Emacs 22 icon is available as `emacs22.png' in the same location.
Nick Roberts's avatar
Nick Roberts committed
192 193 194

* Changes in Emacs 23.1

Chong Yidong's avatar
Chong Yidong committed
195
** Improved X Window System support
196

Chong Yidong's avatar
Chong Yidong committed
197 198 199 200 201
*** Emacs now supports using both X displays and ttys in one session.
With an Emacs server active (M-x server-start), `emacsclient -t'
creates a tty frame connected to the running emacs server.  You can
use any number of different ttys.  `emacsclient -c' creates a new X11
frame on the current $DISPLAY (or a tty frame if $DISPLAY is not set).
202 203
There may be problems if a display exits unexpectedly and Emacs is compiled
with Gtk+, see etc/PROBLEMS.
204 205 206

You can test for the presence of this feature in your Lisp code by
testing for the `multi-tty' feature.
207 208

*** Emacs starts in the background, as a daemon, when given the
209 210 211
--daemon command line argument.  It disconnects from the terminal and
starts the server.  Clients can connect and create graphical or
terminal frames using emacsclient.
212

213
**** emacsclient starts emacs in daemon mode and connects to it when
214 215
--alternate-editor="" is used (or when the evironment variable
ALTERNATE_EDITOR is set to "") and emacsclient cannot connect to an
216 217
emacs server.

Chong Yidong's avatar
Chong Yidong committed
218
*** The new command close-display-connection closes a connection to a
219
remote display.  There are some bugs for Gtk+.  See etc/PROBLEMS.
220

Chong Yidong's avatar
Chong Yidong committed
221 222 223
*** Emacs now supports the XEmbed specification.
You can embed Emacs in another application on X11.  The new command line
option --parent-id is used to pass the parent window id to Emacs.  See
Jan Djärv's avatar
Jan Djärv committed
224 225
http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
for details about XEmbed.
226

Chong Yidong's avatar
Chong Yidong committed
227 228 229
*** Emacs can now set the frame opacity.
The opacity of a frame can be controlled by setting the `alpha' frame
parameter.  This only takes effect on a compositing window manager for
230 231
the X Window System, such as Compiz, Beryl and Compiz Fusion, on Mac
OS X, or on Windows 2000 and later versions of Windows.
232 233

The alpha parameter should be an integer between 0 (transparent) and
Chong Yidong's avatar
Chong Yidong committed
234 235
100 (opaque), or a float number between 0.0 and 1.0.  It can also be a
cons cell (ACTIVE . INACTIVE), where ACTIVE is the opacity of an
236
active frame and INACTIVE is the opacity of non-active frames.
237

Chong Yidong's avatar
Chong Yidong committed
238 239
The variable `frame-alpha-lower-limit' defines a lower bound for the
opacity; the default is 20.
240

Chong Yidong's avatar
Chong Yidong committed
241
** Internationalization changes
242

Chong Yidong's avatar
Chong Yidong committed
243 244
*** The Emacs character set is now a superset of Unicode.
(It has about four times the code space, which should be plenty).
Stefan Monnier's avatar
Stefan Monnier committed
245

Chong Yidong's avatar
Chong Yidong committed
246
The internal encoding used for buffers and strings is now
247 248 249 250
Unicode-based and called `utf-8-emacs' (`emacs-internal' is an alias
for this).  This encoding is backward-compatible with Unicode's UTF-8
encoding.  The internal encoding previously used by Emacs,
`emacs-mule', is still available for reading and writing files.
Nick Roberts's avatar
Nick Roberts committed
251

Chong Yidong's avatar
Chong Yidong committed
252 253 254
During byte-compilation, Emacs 23 uses `utf-8-emacs' to write files.
As a result, byte-compiled files containing non-ASCII characters can't
be read by earlier versions of Emacs.  Files compiled by Emacs 20, 21,
255 256 257 258
or 22 are loaded correctly as `emacs-mule' (whether or not they
contain multibyte characters).  This takes somewhat more time, so it
may be worth recompiling existing .elc files which don't need to be
shared with older Emacsen.
259

Chong Yidong's avatar
Chong Yidong committed
260
*** There are new coding systems/aliases; see M-x list-coding-systems.
261

Chong Yidong's avatar
Chong Yidong committed
262 263 264
*** There is a new charset implementation with many new charsets.
See M-x list-character-sets.  New charsets can be defined conveniently
as tables of unicodes.
Dan Nicolaescu's avatar
Dan Nicolaescu committed
265

Chong Yidong's avatar
Chong Yidong committed
266 267 268
*** There are new language environments for Chinese-GBK,
Chinese-GB18030, Khmer, Bengali, Punjabi, Gujarati, Oriya, Telugu,
Sinhala, and TaiViet.
269

Chong Yidong's avatar
Chong Yidong committed
270 271
*** The minor modes unify-8859-on-encoding-mode and
unify-8859-on-decoding-mode are obsolete.
272

273 274 275
*** `ucs-insert' is bound to `C-x 8 RET' and in addition to hex numbers
accepts numbers in hash notation (e.g. #o21430 for octal, or #10r8984 for
decimal).  It also accepts Unicode character names with completion.
276

277 278 279 280 281
*** The `cyrillic-translit' input method supports many new characters.
Common typographical characters available from Unicode were added to
`cyrillic-translit': punctuation marks, accented characters, fractions,
and others.

Chong Yidong's avatar
Chong Yidong committed
282
** Emacs now supports serial port access on GNU/Linux, Unix, and
283 284 285
Windows.  The new command `serial-term' starts an interactive terminal
on a serial port.  The serial port can be configured at runtime with
the mode-line mouse menu.
286

Chong Yidong's avatar
Chong Yidong committed
287
** Menu Bar changes
288

Chong Yidong's avatar
Chong Yidong committed
289 290 291 292 293
*** In the Options menu, the "Set Default Font" item applies the
selected font to the `default' face on all frames, not just the
current frame.  Furthermore, if Emacs is compiled with both GTK and
Fontconfig support, the "Set Default Font" item uses the GTK font
selection dialog instead of an Emacs pop-up menu.
294

Chong Yidong's avatar
Chong Yidong committed
295 296
*** The font setting chosen by "Set Default Font" is saved if the
"Save Options" item is used.
297

298 299 300
*** The Tools menu contains a new Encryption/Decryption submenu.
This contains commands provided by EasyPG, the newly-included
interface to GnuPG (see New Modes and Packages).
301

302 303 304
*** In the Options menu, the "Truncate Long Lines in the Buffer" entry
has been replaced with a submenu offering three different ways to
handle long lines: truncation, continuation at the window edge, and
305
the new word wrapping behavior (see Editing Changes, below).
306

Dan Nicolaescu's avatar
Dan Nicolaescu committed
307 308 309 310
*** Improvements to menus for major and minor modes
More major and minor modes now have a mode specific menu, and existing
mode menus have been improved to include more functionality.

Chong Yidong's avatar
Chong Yidong committed
311
** Mode-line changes
312

Chong Yidong's avatar
Chong Yidong committed
313 314
*** The mode-line displays a `@', instead of `-', if the
default-directory for the current buffer is on a remote machine.
315

Chong Yidong's avatar
Chong Yidong committed
316 317
*** The mode-line displays a mode menu when mouse-1 is clicked on a
minor mode, in the same way as it already did for major modes.
318

Chong Yidong's avatar
Chong Yidong committed
319 320
*** The `mode-line-emphasis' face is used to highlight certain
mode-line information (e.g. waiting for a VC command to finish).
321

Dan Nicolaescu's avatar
Dan Nicolaescu committed
322
*** The mode-line tooltips have been improved to provide more details.
323

Dan Nicolaescu's avatar
Dan Nicolaescu committed
324 325 326
*** The VC, line/colum number and minor mode indicators on the mode
line are now interactive: mouse-1 can be used on them to pop up a menu.

327 328
** File deletion can make use of the Recycle Bin or system Trash folder.
Set `delete-by-moving-to-trash' non-nil to use this.  Deleted files
329
and directories will then be sent to the Recycle Bin on Windows, and
330 331
to `trash-directory' on other systems.

Chong Yidong's avatar
Chong Yidong committed
332
** Directory-local variables can now be defined.
333 334 335
By default, Emacs looks in .dir-locals.el for directory-local
variables.  For more information, see `dir-locals-set-directory-class'
and `dir-locals-set-class-variables'.
336

337 338 339 340 341 342 343
** Emacs can now use `auth-source' for authentication.
`smtpmail' and `url' (Tramp and Gnus also) use `auth-source' to obtain
login names and passwords.  The match, if found, is reported
in *Messages* with the password blanked out.

** `where-is-preferred-modifier' can specify your favorite modifier.

344

345
* Startup Changes in Emacs 23.1
346

347 348 349 350 351 352
** The option `inhibit-startup-screen' (with aliases to old names
`inhibit-splash-screen' and `inhibit-startup-message') doesn't inhibit
display of the initial message in the *scratch* buffer.  If you don't
want to display the initial message in the *scratch* buffer at startup,
you can set the option `initial-scratch-message' to nil.

353 354 355 356
** New user option `initial-buffer-choice' specifies what to display
after starting Emacs: startup screen, *scratch* buffer, visiting a
file or directory.

357 358 359 360
** New alias `argv' for `command-line-args-left'
This is a convenience alias, so that one can write `(pop argv)'
inside of --eval command line arguments in order to access
following arguments.
361 362

** The abbrev file is no longer read at startup in batch mode.
363 364 365 366 367 368

** Emacs now supports invocation by an X session manager.
It can save a session and restore it later.  See the documentation of
the functions `emacs-session-save' and `emacs-session-restore'.
(Actually, this feature was introduced with Emacs 22, but it was not
documented.)
369

370
* Incompatible Editing Changes in Emacs 23.1
Kim F. Storm's avatar
Kim F. Storm committed
371

372 373 374
** In Dired, `dired-flag-garbage-files' is rebound from `&' to `%&'
on the regexp command prefix map.

375 376 377 378
** In Dired-x, all command guesses for ! are now added to the default
list accessible by M-n instead of pushing all guesses temporarily into
the history list.

379 380 381 382
** In Isearch mode, a special case of typing `C-w' at the beginning of
the minibuffer that toggles word search (i.e. using key sequences
`C-s RET C-w' or `C-s M-e C-w') is obsolete.  You can use the global key
`M-s w' to start word search, or type `M-s w' in Isearch mode to
383 384
toggle word search.  To start nonincremental word search you can now use
`M-s w RET' and `M-s w C-r RET' instead of `C-s RET C-w' and `C-r RET C-w'.
385

Juri Linkov's avatar
Juri Linkov committed
386 387 388 389 390 391 392
** In Info, `Info-search' is unbound from `M-s' to allow using `M-s w'
for word search as well as other search commands from the global prefix
key `M-s'.  `Info-search' is still bound to `s', and also incremental
search commands `C-s', `C-M-s', `C-r', `C-M-r' are available for searching
through multiple Info nodes, together with their nonincremental versions
`C-s RET', `C-r RET', `C-M-s RET', `C-M-r RET', `M-s w RET'.

393 394 395
** In Text mode, `center-line' and `center-paragraph' are rebound from
`M-s' and `M-S' to global keys `M-o M-s' and `M-o M-S' on the global
prefix map `M-o', which is intended for such formatting commands.
396

Reiner Steib's avatar
Reiner Steib committed
397
** The following input methods were removed in Emacs 22.2, but this was
Juanma Barranquero's avatar
Juanma Barranquero committed
398
not advertised: danish-alt-postfix, esperanto-alt-postfix,
Reiner Steib's avatar
Reiner Steib committed
399 400 401 402
finnish-alt-postfix, german-alt-postfix, icelandic-alt-postfix,
norwegian-alt-postfix, scandinavian-alt-postfix, spanish-alt-postfix,
and swedish-alt-postfix.  Use the versions without "alt-", which are
identical.
403

Richard M. Stallman's avatar
Richard M. Stallman committed
404

405
* Editing Changes in Emacs 23.1
Richard M. Stallman's avatar
Richard M. Stallman committed
406

407 408 409
** The C-n and C-p line-motion commands now move by screen lines,
taking continued lines and variable-width characters into account.
Setting `line-move-visual' to nil reverts this to the previous
410 411
behavior (i.e., motion by logical lines based on buffer contents
alone).
412

Chong Yidong's avatar
Chong Yidong committed
413
** C-x C-c now invokes `save-buffers-kill-terminal', and C-z now
414
invokes `suspend-frame'.  These changes are for compatibility with the
Chong Yidong's avatar
Chong Yidong committed
415
new multi-tty support (see `Improved X Window System support' above).
416

Chong Yidong's avatar
Chong Yidong committed
417
** Mark changes
418

419
*** Transient Mark mode is now on by default.
420

421
*** mark-even-if-inactive now defaults to t
422

423 424
*** When Transient Mark mode is on, C-SPC C-SPC pushes a mark without
activating it.
425

426 427
*** When Transient Mark mode is on, M-q now fills the region if the
region is active.  Otherwise, it fills the current paragraph.
428

429 430
*** When Transient Mark mode is on, M-$ now checks spelling of the
region if the region is active.  Otherwise, it checks spelling of the
Juri Linkov's avatar
Juri Linkov committed
431
word at point.
432

433 434
*** When Transient Mark mode is on, TAB now indents the region if the
region is active.
435 436 437 438

*** The variable `use-empty-active-region' controls whether an empty
active region in Transient Mark mode should make commands operate on
that empty region.
439 440

** Temporarily active regions
441

442 443 444 445
*** The new variable shift-select-mode, non-nil by default, controls
shift-selection.  When Shift Select mode is on, shift-translated
motion keys (e.g. S-left and S-down) activate and extend a temporary
region, similar to mouse-selection.
446

447 448 449 450 451 452 453
*** Temporarily active regions, created using shift-selection or
mouse-selection, are not necessarily deactivated in the next command.
They are only deactivated after point motion commands that are not
shift-translated, or after commands that would ordinarily deactivate
the mark in Transient Mark mode (e.g., any command that modifies the
buffer).

454
** Minibuffer and completion changes
455

456 457 458 459 460 461 462 463 464 465 466 467
*** Emacs may ask for confirmation before opening a non-existent file
or buffer.  By default, Emacs requests confirmation if you type RET
immediately after TAB, and the resulting input is not an existing file
or buffer; this usually happens when the minibuffer input did not
complete far enough and you entered RET by mistake.  In that case,
Emacs puts the message "[Confirm]" in the minibuffer; type RET again
to create the file or buffer.

The new variable confirm-nonexistent-file-or-buffer determines whether
Emacs asks for confirmation.  The default value is `after-completion'.
If you change it to t, Emacs always asks for confirmation; if you
change it to nil, Emacs never asks for confirmation.
468

469 470 471 472 473 474 475 476 477 478 479 480
*** The rules for performing completion have been changed.
When generating completion alternatives, Emacs now takes the
minibuffer text after point, if any, into account: this text is
treated as a substring of the remaining part of the completion
alternative (i.e., the part not matched by the minibuffer text before
point).  If no completion alternatives are found this way, Emacs
attempts to perform partial-completion.  If still no completion
alternatives are found, we fall back on the Emacs 22 rules for
performing completion.

The new variable `completion-styles' can be customized to choose your
favorite completion style.
481

482 483 484 485 486 487
*** When M-n in the minibuffer reaches the end of the list of defaults,
it adds the completion list to the end, so next M-n continues putting
completion items to the minibuffer.  The same principle applies to
incremental search commands as well: C-s or C-M-s starts searching
the default values and after the end of defaults they continue
searching minibuffer completion items.
488

Chong Yidong's avatar
Chong Yidong committed
489
*** Minibuffer input of shell commands now comes with completion.
490

Chong Yidong's avatar
Chong Yidong committed
491 492
*** In the `C-x d' (Dired) prompt, typing M-n gives the visited file
name of the current buffer.
493

Chong Yidong's avatar
Chong Yidong committed
494 495 496 497 498
*** In the M-! (shell-command) prompt, M-n provides some default commands.
These are guessed using the file extension of the current file, based
on the file-handlers specified in the operating system's `mailcap'
file.  The ! command in Dired (dired-do-shell-command) works
similarly, using the file displayed on the current line.
499 500 501

*** A list of regexp default values is available via M-n for `occur',
`keep-lines', `flush-lines' and `how-many'.  This list includes the active
Juri Linkov's avatar
Juri Linkov committed
502 503
region in transient-mark-mode, the word under the cursor, the last Isearch
regexp, the last Isearch string and the last replacement regexp.
504

505 506 507 508 509
*** When enable-recursive-minibuffers is non-nil, operations which use
switch-to-buffer (such as C-x b and C-x C-f) do not fail any more when
used in a minibuffer or a dedicated window.  Instead, they fallback on
using pop-to-buffer, which will use some other window.  This change
has no effect when enable-recursive-minibuffers is nil (the default).
510

Juri Linkov's avatar
Juri Linkov committed
511 512 513
*** Isearch started in the minibuffer searches in the minibuffer history.
Reverse Isearch commands (C-r, C-M-r) search in previous minibuffer
history elements, and forward Isearch commands (C-s, C-M-s) search in
514 515 516 517
next history elements.  When the reverse search reaches the first history
element, it wraps to the last history element, and the forward search
wraps to the first history element.  When the search is terminated, the
history element containing the search string becomes the current.
518

519 520
*** The variable read-file-name-completion-ignore-case overrides
completion-ignore-case for file name completion.
521

522 523
*** The variable read-buffer-completion-ignore-case overrides
completion-ignore-case for buffer name completion.
524

525 526
*** The new command `minibuffer-force-complete' chooses one of the
possible completions, rather than stopping at the common prefix.
527

528 529 530
*** If `completion-auto-help' is `lazy', Emacs shows the completions
buffer only on the second attempt to complete.  This was already
supported in `partial-completion-mode'.
531

532
** Face changes
533

534 535
*** S-down-mouse-1 now pops up a menu for changing the font and text
size of the default face in the current buffer.  The face is changed
Chong Yidong's avatar
Chong Yidong committed
536
via face remapping (see Lisp changes, below).
537

538 539 540
*** New commands to change the default face size in the current buffer.
To increase it, type `C-x C-+' or `C-x C-='.  To decrease it, type
`C-x C--'.  To restore the default (global) face size, type `C-x C-0'.
541 542 543 544 545 546 547
These work via Text Scale mode, a new minor mode.

The final key in the above commands may be repeated without the
leading `C-x', e.g. `C-x C-= C-= C-=' increases the face height by
three steps.  Each step scales the height of the default face by the
value of the variable `text-scale-mode-step'.

548 549 550
*** The commands buffer-face-mode and buffer-face-set can be used to
remap the default face in the current buffer.  See "Buffer Face mode",
under New Modes and Packages.
Glenn Morris's avatar
Glenn Morris committed
551

Chong Yidong's avatar
Chong Yidong committed
552
** Primary selection changes
553

Chong Yidong's avatar
Chong Yidong committed
554 555 556 557
*** If `select-active-regions' is t, setting the mark automatically
makes the new region into the primary selection (for interaction with
other window applications).  If you enable this, you might want to
bind `mouse-yank-primary' to Mouse-2.
558

559 560
*** You can disable kill ring commands from accessing the primary
selection by setting `x-select-enable-primary' to nil.
561

562 563 564 565 566 567 568 569
** Continuation lines can now be wrapped at word boundaries
(word-wrapping).  This is controlled by the new per-buffer variable
`word-wrap'.  Word wrapping does not take place if continuation lines
are not shown, e.g. if truncate-lines is non-nil.  The most convenient
way to enable word-wrapping is using the new minor mode Visual Line
mode; in addition to setting `word-wrap' to t, this rebinds some
editing commands to work on screen lines rather than text lines.  See
New Modes and Packages, below.
Chong Yidong's avatar
Chong Yidong committed
570

571
** Window management changes
572

573 574
*** truncate-partial-width-windows now accepts integer values, which
specify a minimum window width for partial-width windows, below which
575
lines are truncated.  The default has been changed to 50.
576 577 578

*** The new command balance-windows-area balances windows both
vertically and horizontally.
579

Martin Rudalics's avatar
Martin Rudalics committed
580 581 582
*** pop-to-buffer now always sets input focus when the popped-to window
is on a different frame.

Chong Yidong's avatar
Chong Yidong committed
583
** Miscellaneous changes:
584

Chong Yidong's avatar
Chong Yidong committed
585 586
*** C-l is bound to the new command recenter-top-bottom, rather than recenter.
This moves the current line to window center, top and bottom on
Chong Yidong's avatar
Chong Yidong committed
587
successive invocations.
588

Chong Yidong's avatar
Chong Yidong committed
589
*** scroll-preserve-screen-position also preserves the column position.
590

Chong Yidong's avatar
Chong Yidong committed
591 592 593
*** If `yank-pop-change-selection' is t, rotating the kill ring also
updates the selection or clipboard to the current yank, just as M-w
would do so with the text it copies to the kill ring.
594

Chong Yidong's avatar
Chong Yidong committed
595 596 597 598 599 600 601 602
*** C-M-% now shows replacement as it would look in the buffer, with
`\N' and `\&' substituted according to the match.  Old behavior can be
restored by customizing `query-replace-show-replacement'.

*** The command shell prompts for the default directory, when it is
called with a prefix and the default directory is a remote file name.
This is because some file name handlers (like ange-ftp) are not able to
run processes remotely.
603

Chong Yidong's avatar
Chong Yidong committed
604 605
*** The new command kill-matching-buffers kills buffers whose name
matches a regexp.
606

607 608 609
*** The value of comment-style now defaults to `indent'.
Thefore, comment-start markers are inserted at the current indentation
of the region to comment, rather than the leftmost column.
610

611 612
*** The new commands `pp-macroexpand-expression' and
`pp-macroexpand-last-sexp' pretty-print macro expansions.
613

614 615
*** The new command `set-file-modes' allows to set file's mode bits.
The mode bits can be specified in symbolic notation, like with GNU
616 617
Coreutils, in addition to an octal number.  `chmod' is a new
convenience alias for this function.
Eli Zaretskii's avatar
Eli Zaretskii committed
618

Eli Zaretskii's avatar
Eli Zaretskii committed
619 620 621
*** `next-error-recenter' specifies how next-error should recenter the
visited source file.  Its value can be a number (for example, 0 for
top line, -1 for bottom line), or nil for no recentering.
622

623 624
*** When typing in a password in the echo area, C-y yanks the current
kill into the password.
625

626 627
*** Tooltip frame parameters `font' and `color' in `tooltip-frame-parameters'
are ignored.  Customize the `tooltip' face instead.
628

Dan Nicolaescu's avatar
Dan Nicolaescu committed
629
*** `mkdir' is a new convenience alias for `make-directory'.
Chong Yidong's avatar
Chong Yidong committed
630 631

* New Modes and Packages in Emacs 23.1
632 633 634 635 636

** Auto Composition Mode is a minor mode that composes characters
automatically when they are displayed.  It is globally on by default.
It uses `auto-composition-function' (default `auto-compose-chars').

Chong Yidong's avatar
Chong Yidong committed
637
** Bubbles, a new game, is similar to SameGame.
638 639 640 641 642 643 644 645

** Buffer Face mode is a minor mode for remapping the default face in
the current buffer.  The variable `buffer-face-mode-face' specifies
the face to remap to.  The command `buffer-face-set' prompts for a
face name, sets `buffer-face-mode-face' to it, and enables
buffer-face-mode.  See "Face changes", under Editing Changes, for a
description of face remapping.

Juri Linkov's avatar
Juri Linkov committed
646 647
** butterfly flips the desired bit on the drive platter.
See http://xkcd.com/378/
648

649 650
** bug-reference.el provides clickable links to bug reports.

Chong Yidong's avatar
Chong Yidong committed
651 652
** dbus.el provides D-Bus language bindings.
D-Bus is an inter-process communication mechanism for applications
653
residing on the same host.  See the manual for details.
Chong Yidong's avatar
Chong Yidong committed
654

655
** DocView mode allows viewing of PDF, PostScript and DVI documents.
656 657
One can also search for a regular expression in the document.  For
details, see the commentary in doc-view.el.
Chong Yidong's avatar
Chong Yidong committed
658

659 660 661 662
PDF and DVI files are now opened in Doc View mode by default.

In Postcript mode, C-c C-c launches Doc View minor mode for viewing
the postscript file.
663

664 665 666 667
** EasyPG provides an interface to the GNU Privacy Guard (GnuPG).
It includes a GnuPG keyring browser, cryptographic operations on
regions and files, and automatic encryption of *.gpg files.  For
details, see the EasyPG Assistant User's Manual.
Chong Yidong's avatar
Chong Yidong committed
668 669 670 671 672 673 674

** json.el is a library for parsing and generating JSON
(JavaScript Object Notation), a lightweight data-interchange format.

** linum.el is a new minor mode to display line numbers for the
current buffer.

675 676 677 678 679 680
** mairix.el is an interface to mairix, a free tool for indexing and
searching locally stored mail.  It allows you to query mairix and
display the search results with Rmail, Gnus and VM.  Note that there
is an existing Gnus back end, nnmairix.el, which should be used with
Maildir/MH setups.

681
** minibuffer-depth-indicate-mode shows the minibuffer depth in the prompt.
Chong Yidong's avatar
Chong Yidong committed
682 683 684 685 686 687 688 689 690 691 692 693 694

** nXML Mode
This is a new mode for editing XML documents.  It allows a schema to
be associated with the XML document being edited, using Relax NG as
the schema language.  The schema is used to provide two key features:

*** Continuous validation.  nXML validates as you type, highlighting
any invalid parts of your document.

*** Completion.  nXML can assist you in entering an element name,
attribute name or data value by using information about what is
allowed by the schema in that context.

695 696 697 698 699 700
** proced.el provides a Dired-like interface for operating on
processes.  Proced makes an Emacs buffer containing a listing of the
current processes.  You can use the normal Emacs commands to move
around in this buffer, and special Proced commands to operate on the
processes listed.  It is currently only functional on GNU/Linux,
MS-Windows and Solaris.
Chong Yidong's avatar
Chong Yidong committed
701 702 703 704 705

** Remember Mode is a mode for jotting down things to remember.
Notes can be saved to a Diary file.  For details, see the Remember
Manual.

706
** RST mode is a major mode for editing reStructuredText files.
707

Chong Yidong's avatar
Chong Yidong committed
708 709
** Ruby mode is a major mode for Ruby files.

Chong Yidong's avatar
Chong Yidong committed
710 711 712 713
** Visual Line mode provides support for editing by visual lines.
It turns on word-wrapping in the current buffer, and rebinds C-a, C-e,
and C-k to commands that operate by visual lines instead of logical
lines.  This is a more reliable replacement for longlines-mode.
714 715
This can also be turned on using the menu bar, via
Options -> Line Wrapping in this Buffer -> Word Wrap
Chong Yidong's avatar
Chong Yidong committed
716

Michael Albinus's avatar
Michael Albinus committed
717 718 719 720
** xesam.el is an implementation of Xesam, an interface to (desktop)
search engines like Beagle, Strigi, and Tracker.  The Xesam API
requires D-Bus for communication.

Chong Yidong's avatar
Chong Yidong committed
721 722 723 724 725
** zeroconf.el offers service discovery and service publishing
interfaces according to the zeroconf specification.  It communicates
with Avahi, a zeroconf implementation, via D-Bus messages on systems
which have installed this software.

726 727 728 729 730 731 732 733 734
** There is a new `whitespace' package.
(The pre-existing one has been renamed to `old-whitespace'.)
Now, besides reporting bogus blanks, the whitespace package has a
minor mode and a global minor mode to visualize blanks (TAB, (HARD)
SPACE and NEWLINE).  The visualization is made via faces and/or display
table.  It can also indicate lines that extend beyond a given column,
trailing blanks, and empty lines at the start or end of a buffer.
See `whitespace-style' for more details.  The `whitespace-action' option
specifies what to do when a buffer is visited, killed, or written.
735

Chong Yidong's avatar
Chong Yidong committed
736 737 738 739

* Changes in Specialized Modes and Packages in Emacs 23.1

** Abbrev has been rewritten in Elisp and extended with more flexibility.
740

Stefan Monnier's avatar
Stefan Monnier committed
741
*** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put,
742
    abbrev-table-p, abbrev-insert, abbrev-table-menu.
743

Stefan Monnier's avatar
Stefan Monnier committed
744
*** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'.
745

Stefan Monnier's avatar
Stefan Monnier committed
746 747
*** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take
    extra arguments for arbitrary properties.
748

Stefan Monnier's avatar
Stefan Monnier committed
749
*** New variable `abbrev-minor-mode-table-alist'.
750

Stefan Monnier's avatar
Stefan Monnier committed
751
*** `local-abbrev-table' can hold a list of abbrev-tables.
752

Stefan Monnier's avatar
Stefan Monnier committed
753
*** Abbrevs have now the following special properties:
754
    `:count', `:system', `:enable-function', `:case-fixed'.
755

Stefan Monnier's avatar
Stefan Monnier committed
756 757 758 759
*** Abbrev-tables have now the following special properties:
    `:parents', `:case-fixed', `:enable-function', `:regexp',
    `abbrev-table-modiff'.

Chong Yidong's avatar
Chong Yidong committed
760
** Apropos
761

Chong Yidong's avatar
Chong Yidong committed
762
*** `apropos-library' describes the elements defined in a given library.
763

Chong Yidong's avatar
Chong Yidong committed
764
*** Set `apropos-compact-layout' is you want a more compact (but wider) layout.
Martin Rudalics's avatar
Martin Rudalics committed
765

Chong Yidong's avatar
Chong Yidong committed
766
** Archive Mode has basic support to browse Rar archives.
767 768
Note, however, that the free version of the unrar command only handles
versions 1 and 2 of the Rar format.
Martin Rudalics's avatar
Martin Rudalics committed
769

Chong Yidong's avatar
Chong Yidong committed
770
** BibTeX mode
Juri Linkov's avatar
Juri Linkov committed
771

Chong Yidong's avatar
Chong Yidong committed
772
*** New command `bibtex-initialize' (re)initializes BibTeX buffers.
Juri Linkov's avatar
Juri Linkov committed
773

Chong Yidong's avatar
Chong Yidong committed
774 775
*** New `bibtex-entry-format' options `whitespace', `braces', and
`string', disabled by default.
Juri Linkov's avatar
Juri Linkov committed
776

Chong Yidong's avatar
Chong Yidong committed
777 778
*** New variable `bibtex-cite-matcher-alist' contains rules to
identify cited keys in BibTeX entries, used by `bibtex-find-crossref'.
779

Chong Yidong's avatar
Chong Yidong committed
780
*** Command `bibtex-url' allows multiple URLs per entry.
Glenn Morris's avatar
Glenn Morris committed
781

Chong Yidong's avatar
Chong Yidong committed
782
** Calendar and diary
Juri Linkov's avatar
Juri Linkov committed
783

Chong Yidong's avatar
Chong Yidong committed
784 785 786 787
*** There is a new date style, `iso', essentially year/month/day.
The variable `european-calendar-style' is obsolete - use `calendar-date-style'.
Similarly, the commands `american-calendar' and `european-calendar'
should be replaced by `calendar-set-date-style'.
Stefan Monnier's avatar
Stefan Monnier committed
788

Chong Yidong's avatar
Chong Yidong committed
789 790 791 792 793 794 795
*** The calendar namespace has been rationalized.
All functions and variables now begin with a `calendar-', `diary-', or
`holiday-' prefix.  The various calendar systems have secondary
prefixes, eg `calendar-french-'.  The old names you are likely to use
directly still exist, for the time being, as aliases, but please start
using the new names.

796 797 798 799 800 801 802 803
*** The whitespace in the calendar layout can be customized.
See the variables:
calendar-left-margin, calendar-intermonth-spacing, calendar-column-width,
calendar-day-header-width, and calendar-day-digit-width.

*** Text (e.g. ISO weeks) can be displayed between the calendar months.
See the variables calendar-intermonth-header and calendar-intermonth-text.

Chong Yidong's avatar
Chong Yidong committed
804 805 806 807 808
*** The function `holiday-chinese' computes holidays on the Chinese calendar.
It has been used to add items to the list `holiday-oriental-holidays'.

*** `diary-remind' accepts a negative number -DAYS as a shorthand for
the list (1 2 ... DAYS).
809

810 811 812 813 814 815 816 817
** Change Log mode

*** The new command C-c C-f (change-log-find-file) finds the file
associated with the current log entry.

*** The new command C-c C-c (change-log-goto-source) goes to the
source code associated with a log entry.

Dan Nicolaescu's avatar
Dan Nicolaescu committed
818
** Compile and grep modes
819

Dan Nicolaescu's avatar
Dan Nicolaescu committed
820 821 822
*** The mode-line entry for the *compilation* and *grep* buffer is color coded.
It has different colors for to show that: (a) the command is still
running, (b) successful completion, (c) error.
823

Dan Nicolaescu's avatar
Dan Nicolaescu committed
824
*** compilation-auto-jump-to-first-error tells `compile' to jump to
825
the first error encountered during compilations.
826

827 828
*** compilation-scroll-output accepts a new value, `first-error', which
says to stop auto scrolling at the first error that occurs.
829

Dan Nicolaescu's avatar
Dan Nicolaescu committed
830
*** The `cc' alias for C++ files in `grep-file-aliases' has been
Glenn Morris's avatar
Glenn Morris committed
831
improved.  `hh' can be used to match C++ header files and `cchh' both
Dan Nicolaescu's avatar
Dan Nicolaescu committed
832 833
C++ sources and headers.

834 835 836 837 838 839 840 841 842
** Copyright

*** You can specify your copyright holders' names.
Only copyright lines with holders matching `copyright-names-regexp' are
considered for update.

*** Copyrights can be at the end of the buffer.
This is controlled by `copyright-at-end-flag' (used by, e.g., change-log-mode).

Chong Yidong's avatar
Chong Yidong committed
843
** Custom
844

Chong Yidong's avatar
Chong Yidong committed
845
*** defcustom accepts new keyword arguments, `:safe' and `:risky', which
846 847
set a variable's `safe-local-variable' and `risky-local-variable' property.

Chong Yidong's avatar
Chong Yidong committed
848
** Diff mode
849

Chong Yidong's avatar
Chong Yidong committed
850 851
*** diff-refine-hunk highlights word-level details of changes in a diff hunk.
It's used automatically as you move through hunks, see
852
diff-auto-refine-mode.  It is bound to `C-c C-b'.
853

Chong Yidong's avatar
Chong Yidong committed
854 855 856
*** diff-add-change-log-entries-other-window iterates through the diff
buffer and tries to create ChangeLog entries for each change.
It is bound to `C-x 4 A'.
857

858 859
*** Turning on `whitespace-mode' in a diff buffer will show trailing
whitespace problems in the modified lines.
860

861
** Dired
862

863 864 865
*** In Dired, C-x C-q now runs the command wdired-change-to-wdired-mode,
and C-x C-q in wdired-mode exits it with asking a question about
saving changes.
866

867 868 869 870
*** `&' runs the command `dired-do-async-shell-command' that executes
the command asynchronously without the need to manually add ampersand
to the end of the command.  Its output appears in the buffer `*Async Shell
Command*'.
871

872
*** `M-s f C-s' and `M-s f M-C-s' run Isearch that matches only at file names.
873 874 875 876 877 878 879
When a new user option `dired-isearch-filenames' is t, then even ordinary
Isearch started with `C-s' and `C-M-s' matches only at file names in the
Dired buffer.  When `dired-isearch-filenames' is `dwim' then activation of
file name Isearch depends on the position of point - if point is on a file
name initially, then Isearch matches only file names, otherwise it matches
everywhere in the Dired buffer.  You can toggle file names matching on or
off by typing `M-s f' in Isearch mode.
880

Juri Linkov's avatar
Juri Linkov committed
881 882 883
*** `M-s a C-s' and `M-s a M-C-s' run multi-file Isearch on the marked files.
They visit the first marked file in the sequence and display the usual Isearch
prompt for a string or a regexp where all Isearch commands are available.
884

885 886 887 888 889 890 891 892
*** `Q' in Dired provides two new keys for multi-file replacement.
The upper case key `Y' replaces all remaining matches in all remaining files
with no more questions.  The upper case key `N' stops doing replacements
in the current file and skips to the next file.  These multi-file keys
are available for all commands that use `tags-query-replace'
including `dired-do-query-replace-regexp', `vc-dir-query-replace-regexp',
`reftex-query-replace-document'.

Chong Yidong's avatar
Chong Yidong committed
893
** Fortran
894

Glenn Morris's avatar
Glenn Morris committed
895 896
*** The line length of fixed-form Fortran is not fixed at 72 any more.
Customize the variable `fortran-line-length' to change it.
Dan Nicolaescu's avatar
Dan Nicolaescu committed
897

Chong Yidong's avatar
Chong Yidong committed
898 899
*** In Fortran mode, M-; is now bound to the standard comment-dwim,
rather than fortran-indent-comment.
Dan Nicolaescu's avatar
Dan Nicolaescu committed
900

Chong Yidong's avatar
Chong Yidong committed
901
*** (The increasingly misnamed) F90 mode supports Fortran 2003 syntax.
Dan Nicolaescu's avatar
Dan Nicolaescu committed
902

Chong Yidong's avatar
Chong Yidong committed
903
** Gnus
904

Chong Yidong's avatar
Chong Yidong committed
905 906 907
*** The Gnus package has been updated
There are many news features, bug fixes and improvements; see the file
GNUS-NEWS or the node "No Gnus" in the Gnus manual for details.
Eric S. Raymond's avatar
Eric S. Raymond committed
908

Chong Yidong's avatar
Chong Yidong committed
909 910 911 912
*** In Emacs 23, Gnus uses Emacs' new internal coding system `utf-8-emacs' for
saving articles drafts and ~/.newsrc.eld.  These file may not be read
correctly in Emacs 22 and below.  If you want to Gnus across different Emacs
versions, you may set `mm-auto-save-coding-system' to `emacs-mule'.
913

914
*** Passwords are consistently loaded through `auth-source'
915 916 917 918
Gnus can use `auth-source' for POP and IMAP passwords.  Also see that
`smtpmail' and `url' support `auth-source' for SMTP and HTTP/HTTPS/RSS
authentication respectively.

Chong Yidong's avatar
Chong Yidong committed
919
** Help mode
920

Chong Yidong's avatar
Chong Yidong committed
921 922
*** New macro `with-help-window' should set up help windows better
than `with-output-to-temp-buffer' with `print-help-return-message'.
Martin Rudalics's avatar