NEWS 109 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

3
Copyright (C) 2010-2013 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
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.

23 24

* Installation Changes in Emacs 24.4
25 26 27 28 29 30

** Emacs can be compiled with POSIX ACL support.
This happens by default if a suitable support library is found at
build time, like libacl on GNU/Linux.  To prevent this, use the
configure option `--without-acl'.

31 32 33
** The configure option --with-crt-dir has been removed.
It is no longer needed, as the crt*.o files are no longer linked specially.

Glenn Morris's avatar
Glenn Morris committed
34

35
* Startup Changes in Emacs 24.4
Glenn Morris's avatar
Glenn Morris committed
36 37


38
* Changes in Emacs 24.4
39

40 41 42 43 44 45 46
+++
** `apropos-variable' is now `apropos-user-option'
`apropos-user-option' shows all user options while `apropos-variable'
shows all variables.  When called with a universal prefix argument,
the two commands swap their behaviors.  When `apropos-do-all' is
non-nil, they output the same results.

47 48 49 50
+++
** `eval-defun' on an already defined defcustom calls the :set function,
if there is one.

51 52 53 54
** If the new variable `enable-dir-local-variables' is nil,
directory local variables are ignored.  May be useful for some modes
that want to ignore directory-locals while still respecting file-locals.

55 56 57 58
** The option `set-mark-default-inactive' has been deleted.
This unfinished feature was introduced by accident in Emacs 23.1;
simply disabling Transient Mark mode does the same thing.

59 60 61
** `initial-buffer-choice' can now specify a function to set up the
initial buffer.

62 63 64 65 66
** ACL support has been added.
+++
*** Emacs preserves the ACL entries of files when backing up.
+++
*** New functions `file-acl' and `set-file-acl' get and set the ACL
67 68 69
entries of a file.  On GNU/Linux, the POSIX ACL interface is used via
libacl.  On MS-Windows, the NT Security APIs are used to emulate the
POSIX ACL interfaces.
70

71
** New option `scroll-bar-adjust-thumb-portion'.
72 73 74
Available only on X, this option allows to control over-scrolling
using the scroll bar (i.e. dragging the thumb down even when the end
of the buffer is visible).
75

Glenn Morris's avatar
Glenn Morris committed
76

77
* Editing Changes in Emacs 24.4
78

79 80
** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
81

82 83 84
** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
Eg View mode, etc.

85

86
* Changes in Specialized Modes and Packages in Emacs 24.4
87

Stefan Monnier's avatar
Stefan Monnier committed
88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
Affected files:
~/.emacs.d/timelog	replaces  ~/.timelog
~/.emacs.d/todo-do	replaces  ~/.todo-do
~/.emacs.d/todo-done	replaces  ~/.todo-done
~/.emacs.d/todo-top	replaces  ~/.todo-top
~/.emacs.d/vip		replaces  ~/.vip
~/.emacs.d/viper	replaces  ~/.viper
~/.emacs.d/ido.last	replaces  ~/.ido.last
~/.emacs.d/kkcrc	replaces  ~/.kkcrc
~/.emacs.d/quickurls	replaces  ~/.quickurls
~/.emacs.d/idlwave	replaces  ~/.idlwave
~/.emacs.d/bdfcache.el	replaces  ~/.bdfcache.el
~/.emacs.d/places	replaces  ~/.emacs-places
~/.emacs.d/shadows	replaces  ~/.shadows
~/.emacs.d/shadow_todo	replaces  ~/.shadow_todo
~/.emacs.d/strokes	replaces  ~/.strokes
~/.emacs.d/notes	replaces  ~/.notes
~/.emacs.d/type-break	replaces  ~/.type-break
107

108 109 110 111 112 113
** Delphi mode is now called OPascal mode.
*** All delphi-* variables and functions have been renamed to opascal-*.
*** `delphi-newline-always-indents' is not supported any more
use `electric-indent-mode' instead.
*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.

114 115
** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.

116 117 118
** completing-read-multiple's separator can now be a regexp.
The default separator is changed to allow surrounding spaces around the comma.

119 120 121 122
** Battery

*** Battery information via the BSD `apm' utility is now supported.

123 124 125 126 127 128 129
** cl-lib

*** New macro cl-tagbody.

+++
*** letf is now just an alias for cl-letf.

130 131 132 133 134 135 136 137 138 139 140 141 142 143
** Calc

*** Calc by default now uses the Gregorian calendar for all dates, and
uses January 1, 1 AD as its day number 1.  Previously Calc used the
Julian calendar for dates before September 14, 1752, and it used
December 31, 1 BC as its day number 1; the new scheme is more
consistent with Calendar's calendrical system and day numbering.

*** The new variable `calc-gregorian-switch' lets you configure the
date when Calc switches from the Julian to the Gregorian calendar.
Nil, the default value, means to always use the Gregorian calendar.
The value (YEAR MONTH DAY) means to start using the Gregorian calendar
on the given date.

144 145
*** Support for ISO 8601 dates.

146 147 148 149
** Dired

*** New minor mode `dired-hide-details-mode' hides details.

150 151 152 153 154 155 156 157 158 159 160
** ERC

*** New option `erc-accidental-paste-threshold-seconds'.
If set to a number, this can be used to avoid accidentally paste large
amounts of data into the ERC input.

** Icomplete is a bit more like IDO.
*** key bindings to navigate through and select the completions.
*** The icomplete-separator is customizable, and its default has changed.
*** Removed icomplete-show-key-bindings.

161
** Image mode
162 163 164 165 166

*** New commands `n' (`image-next-file') and `p' (`image-previous-file')
visit the next image file and the previous image file in the same
directory, respectively.

167 168 169 170
*** New commands to show specific frames of multi-frame images.
`f' (`image-next-frame') and `b' (`image-previous-frame') visit the
next or previous frame.  `F' (`image-goto-frame') shows a specific frame.

171 172 173 174 175 176
---
*** The command `image-mode-fit-frame' deletes other windows.
When toggling, it restores the frame's previous window configuration.
It also has an optional frame argument, which can be used by Lisp
callers to fit the image to a frame other than the selected frame.

177 178 179 180 181 182
** Info

*** New face `info-index-match' is used to highlight matches in index
entries displayed by `Info-index-next', `Info-virtual-index' and
`info-apropos'.

183 184 185 186 187
** Isearch

*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.

Bill Wohler's avatar
Bill Wohler committed
188
** MH-E has been updated to MH-E version 8.5.
Bill Wohler's avatar
Bill Wohler committed
189 190
See MH-E-NEWS for details.

191 192 193 194 195 196 197 198
---
** The unrmail command converts from BABYL to mboxrd rather than mboxo.
Customize `unrmail-mbox-format' to change this.

---
** Similarly, customize `rmail-mbox-format' to influence some minor aspects
of how Rmail displays non-MIME messages.

199 200 201
+++
** New function `ses-rename-cell' to give SES cells arbitrary names.

202 203 204 205 206 207 208 209 210
** trace-function was largely rewritten.
New features include:
- no prompting for the destination buffer, unless a prefix-arg was used.
- additionally to prompting for a destination buffer, when a prefix-arg is
  used, the user can enter a "context", i.e. Lisp expression whose value at the
  time the function is entered/exited will be printed along with the function
  name and arguments.  Useful to trace the value of (current-buffer) or
  (point) when the function is invoked.

211 212 213 214 215
** New command `delete-duplicate-lines' has two types of operation:
when its arg ADJACENT is non-nil (when called interactively with C-u C-u)
it works like the utility `uniq'.  Otherwise by default it deletes
duplicate lines everywhere in the region without regard to adjacency.

216 217 218 219 220
** New `cycle-spacing' command allows cycling between having just one
space, no spaces, or reverting to the original spacing.  Like
`just-one-space' command it can handle or ignore newlines and
leave different number of spaces.

221
** Tramp
222

223 224
+++
*** New connection method "adb", which allows to access Android
225 226
devices by the Android Debug Bridge.  The variable `tramp-adb-program'
can be used to adapt the path of the "adb" program, if needed.
227

228 229 230 231
*** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
"scpc" and "rsyncc" are discontinued.  The ssh option
"ControlMaster=auto" is set automatically in all ssh-based methods,
when possible.
232

233 234 235
+++
*** Handlers for `file-acl' and `set-file-acl' for remote machines
which support POSIX ACLs.
236

237 238 239 240 241
** Woman

*** The commands `woman-default-faces' and `woman-monochrome-faces'
are obsolete.  Customize the `woman-* faces instead.

Chong Yidong's avatar
Chong Yidong committed
242 243 244 245
** Obsolete packages:

*** longlines.el is obsolete; use visual-line-mode instead.

Chong Yidong's avatar
Chong Yidong committed
246 247
*** terminal.el is obsolete; use term.el instead.

Glenn Morris's avatar
Glenn Morris committed
248 249 250
+++
*** yow.el is obsolete; use fortune.el or cookie1.el instead.

Glenn Morris's avatar
Glenn Morris committed
251 252 253 254
---
*** The Info-edit command is obsolete.  Editing Info nodes by hand
has not been relevant for some time.

255

256
* New Modes and Packages in Emacs 24.4
257 258 259 260 261 262 263
** New nadvice.el package offering lighter-weight advice facilities.
It is layered as:
- add-function/remove-function which can be used to add/remove code on any
  function-carrying place, such as process-filters or `<foo>-function' hooks.
- advice-add/advice-remove to add/remove a piece of advice on a named function,
  much like `defadvice' does.

Glenn Morris's avatar
Glenn Morris committed
264

265
* Incompatible Lisp Changes in Emacs 24.4
266

267 268 269 270 271
** `read-event' does not return decoded chars in ttys any more.
Just as was the case in Emacs-22 and before, decoding of tty input according to
keyboard-coding-system is not performed in read-event any more.  But contrary
to that past, it is still done before input-decode-map/function-key-map/...

272 273
** Removed inhibit-local-menu-bar-menus.

274 275 276 277
** frame-local variables that affect redisplay do not work any more.
More specifically, the redisplay does not bother to check for a frame-local
value when looking up variables.

278 279 280 281
** nil and "unbound" are indistinguishable in symbol-function.
`symbol-function' never signals `void-function' any more.
`fboundp' returns non-nil if the symbol was `fset' to nil.

282 283
** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
284

285 286 287 288
** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
VAR was bound to nil which was not tremendously useful and just lead to
spurious warnings about an unused var.

289 290 291 292 293 294
** The return value of `backup-buffer' has changed.
The second argument is no longer an SELinux context, instead it is an
alist of extended attributes as returned by the new function
`file-extended-attributes'.  The attributes can be applied to another
file using `set-file-extended-attributes'.

Glenn Morris's avatar
Glenn Morris committed
295

296
* Lisp Changes in Emacs 24.4
297

298 299
** `dont-compile' is declared obsolete.

300 301 302
** Support for filesystem notifications.
Emacs now supports notifications of filesystem changes, such as
creation, modification, and deletion of files.  This requires the
303 304
'inotify' API on GNU/Linux systems.  On MS-Windows systems, this is
supported for Windows XP and newer versions.
305

306 307 308 309 310 311 312 313 314 315 316 317 318 319
** Changes in autorevert.el

---
*** If Emacs is compiled with file notification support, notifications
are used instead of checking the time stamp of the files.  You can
disable this by setting the user option `auto-revert-use-notify' to
nil.  Alternatively, a regular expression of directories to be
excluded from file notifications can be specified by
`auto-revert-notify-exclude-dir-regexp'.

---
*** The new user option `auto-revert-remote-files' enables reversion
of remote files when set to non-nil.

320 321 322 323 324 325 326 327 328 329
** Face changes

*** The `face-spec-set' is now analogous to `setq' for face specs.
Its third arg now accepts values specifying exactly which face spec to
set (defface, custom, or user spec), and it directly sets the relevant
property using the supplied face spec.

*** Face specs set via Custom themes now replace the `defface' spec
rather than inheriting from it (as do face specs set via Customize).

330 331 332
*** New face characteristic (supports :underline (:style wave))
specifies whether or not the terminal can display a wavy line.

333 334 335 336 337 338 339 340 341 342 343 344 345 346 347
** Image API

+++
*** `image-animated-p' is now `image-multi-frame-p'.
It returns non-nil for any image that contains multiple frames,
whether or not it specifies a frame delay.

+++
*** When animating images that do not specify a frame delay,
Emacs uses `image-default-frame-delay'.

+++
*** New functions `image-current-frame' and `image-show-frame' for getting
and setting the current frame of a multi-frame image.

348
** time-to-seconds is not obsolete any more.
349
** New function special-form-p.
350 351 352
** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
text-property on the first char.

353 354 355
** The `defalias-fset-function' property lets you catch calls to defalias
and redirect them to your own function instead of `fset'.

356
** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
357 358 359 360 361 362 363
When you edit DIR/FILE, Emacs normally creates a symbolic link
DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
is being edited.  Formerly, if there was already a non-symlink file
named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
through DIR/.#FILE.9.  These fallbacks have been removed, so that
Emacs now no longer locks DIR/FILE in that case.

364 365
On file systems that do not support symbolic links, the lock is now a
regular file with contents being what would have been in the symlink.
366

367 368 369 370 371 372 373 374 375 376 377
** The 9th element returned by `file-attributes' is now unspecified.
Formerly, it was t if the file's gid would change if file were deleted
and recreated.  This value has been inaccurate for years on many
platforms, and nobody seems to have noticed or cared.

** The function `file-ownership-preserved-p' now has an optional
argument GROUP which causes it check for file group too.  This can be
used in place of the 9th element of `file-attributes'.

** New functions `group-gid' and `group-real-gid'.

378 379 380 381
** The 6th argument to `copy-file' has been renamed to
`preserve-extended-attributes' as it now handles both SELinux context
and ACL entries.

Glenn Morris's avatar
Glenn Morris committed
382

383
* Changes in Emacs 24.4 on Non-Free Operating Systems
384

385 386 387 388 389
+++
** The "generate a backtrace on fatal error" feature now works on MS Windows.
The backtrace is written to the 'emacs_backtrace.txt' file in the
directory where Emacs was running.

390 391 392 393 394 395
+++
** The variable `buffer-file-type' is no longer supported.
Setting it has no effect, and %t in the mode-line format is ignored.
Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
modifying it has no effect.

396 397 398 399 400 401 402
---
** Lock files now work on MS-Windows.
This allows to avoid losing your edits if the same file is being
edited in another Emacs session or by another user.  See the node
"Interlocking" in the Emacs User Manual for the details.  To disable
file locking, customize `create-lockfiles' to nil.

Glenn Morris's avatar
Glenn Morris committed
403 404 405 406 407
** Improved fullscreen support on Mac OS X.
Both native (>= OSX 10.7) and "old style" fullscreen are supported.
Customize `ns-use-native-fullscreen' to change style.  For >= 10.7
native is the default.

Glenn Morris's avatar
Glenn Morris committed
408

409
* Installation Changes in Emacs 24.3
410

411
** The default X toolkit is now Gtk+ version 3.
Glenn Morris's avatar
Glenn Morris committed
412 413 414
If you don't pass `--with-x-toolkit' to configure, or if you use
`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
Glenn Morris's avatar
Glenn Morris committed
415
You can explicitly require a specific version by passing
Glenn Morris's avatar
Glenn Morris committed
416
`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
417

418
** New configure option `--enable-link-time-optimization', to utilize
419 420
an appropriate feature provided by GCC since version 4.5.0.

Glenn Morris's avatar
Glenn Morris committed
421 422
** New configure option `--without-all' to disable most of the optional
features (image support, etc.) that are normally enabled by default.
423

Glenn Morris's avatar
Glenn Morris committed
424 425
** New configure option `--enable-gcc-warnings' (for developing/debugging
Emacs).  If building with GCC, this enables compile-time checks that
Glenn Morris's avatar
Glenn Morris committed
426 427 428
warn/give errors about possibly-questionable C code.  On a recent GNU
system there should be no warnings; on older and on non-GNU systems
the results may be useful to developers.
429

Glenn Morris's avatar
Glenn Morris committed
430
** The configure option `--enable-use-lisp-union-type' has been
431
renamed to `--enable-check-lisp-object-type', as the resulting
Glenn Morris's avatar
Glenn Morris committed
432 433 434
Lisp_Object type no longer uses a union to implement the compile time
check that this option enables.

Glenn Morris's avatar
Glenn Morris committed
435
** The configure option `--disable-maintainer-mode' has been removed,
436 437
as it was confusingly-named and rarely useful.

Glenn Morris's avatar
Glenn Morris committed
438 439 440 441 442
** The configure options `--program-prefix', `--program-suffix', and
`--program-transform-name' apply to more than just the installed
binaries.  Now they also affect the man pages, icons, and the
etc/emacs.desktop file; but not the info pages, since this would break
links between the various manuals.
443

Glenn Morris's avatar
Glenn Morris committed
444 445
** You can use `NO_BIN_LINK=t make install' to prevent the installation
overwriting "emacs" in the installation bin/ directory with a link
446
to "emacs-VERSION".
Glenn Morris's avatar
Glenn Morris committed
447

448 449
** Emacs uses libtinfo in preference to libncurses, if available.

450 451 452 453
** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
/usr/pkg/lib to the linker search path.  You must add them yourself if
you want them.

454
** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
Glenn Morris's avatar
Glenn Morris committed
455 456 457
(from the bin and libexec directories, respectively).  The former is
no longer relevant, the latter is replaced by lisp (in vc-sccs.el).

Glenn Morris's avatar
Glenn Morris committed
458

459
* Startup Changes in Emacs 24.3
460 461 462

** Emacs no longer searches for `leim-list.el' files beneath the standard
lisp/ directory.  There should not be any there anyway.  If you have
Glenn Morris's avatar
Glenn Morris committed
463
been adding them there, put them somewhere else; e.g., site-lisp.
464

Glenn Morris's avatar
Glenn Morris committed
465 466
** The `--no-site-lisp' command line option now works for Nextstep builds.

Glenn Morris's avatar
Glenn Morris committed
467

468
* Changes in Emacs 24.3
Glenn Morris's avatar
Glenn Morris committed
469

470
** Help
471

472
*** `C-h f' (`describe-function') can now perform autoloading.
473 474 475 476 477 478 479 480 481
When this command is called for an autoloaded function whose docstring
contains a key substitution construct, that function's library is
automatically loaded, so that the documentation can be shown
correctly.  To disable this, set `help-enable-auto-load' to nil.

*** `C-h f' now reports previously-autoloaded functions as "autoloaded",
even after their associated libraries have been loaded (and the
autoloads have been redefined as functions).

482
** ImageMagick
483

484 485
*** Images displayed via ImageMagick now support transparency and the
:background image specification property.
486

487
*** When available, ImageMagick support is automatically enabled.
488 489
It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
490
automatically at startup, or when customizing an imagemagick- option.
Glenn Morris's avatar
Glenn Morris committed
491

492
*** Setting `imagemagick-types-inhibit' to t now disables the use of
Glenn Morris's avatar
Glenn Morris committed
493 494
ImageMagick to view images.  (You must call `imagemagick-register-types'
afterwards if you do not use customize to change this.)
Glenn Morris's avatar
Glenn Morris committed
495

496
*** The new variable `imagemagick-enabled-types' also affects which
497 498 499
ImageMagick types are treated as images.  The function
`imagemagick-filter-types' returns the list of types that will be
treated as images.
500

501 502 503 504
** Minibuffer

*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
next and previous path separator, respectively.
505

506 507 508 509 510 511 512 513 514 515 516 517 518 519
*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
in minibuffer prompts.  Just set `minibuffer-eldef-shorten-default'
non-nil before enabling the mode.

** Mode line

*** New option `mode-line-default-help-echo' specifies the help text
(shown in a tooltip or in the echo area) for any part of the mode line
that does not have its own specialized help text.

*** You can now click mouse-3 in the coding system indicator to invoke
`set-buffer-file-coding-system'.

** Server and client
Glenn Morris's avatar
Glenn Morris committed
520

Chong Yidong's avatar
Chong Yidong committed
521 522 523
*** emacsclient now obeys string values for `initial-buffer-choice',
if it is told to open a new frame without specifying any file to visit
or expression to evaluate.
Glenn Morris's avatar
Glenn Morris committed
524

Chong Yidong's avatar
Chong Yidong committed
525 526 527 528 529
*** New option `server-auth-key' specifies a shared server key.

** Emacs now generates backtraces on fatal errors.
On encountering a fatal error, Emacs now outputs a textual description
of the fatal signal, and a short backtrace on platforms like glibc
530
that support backtraces.
531

532 533 534 535 536 537 538 539 540 541
** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
This minor mode replaces `toggle-read-only', which is now obsolete.

** Most `y-or-n' prompts now allow you to scroll the selected window.
Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
respectively, without exiting from the prompt.

** In the Package Menu, newly-available packages are listed as "new",
and sorted above the other "available" packages by default.

Chong Yidong's avatar
Chong Yidong committed
542 543
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about the bzr revision used.
544

545
** New option `create-lockfiles' specifies usage of lockfiles.
Chong Yidong's avatar
Chong Yidong committed
546 547
It defaults to t.  Changing it to nil inhibits the creation of lock
files (use this with caution).
548

549 550
** New option `enable-remote-dir-locals', if non-nil, allows directory-local
variables on remote hosts.
551

Chong Yidong's avatar
Chong Yidong committed
552 553 554
** The entry for PCL-CVS has been removed from the Tools menu.
The PCL-CVS commands are still available via the keyboard.

555 556 557
** Using "unibyte: t" in Lisp source files is obsolete.
Use "coding: raw-text" instead.

558 559 560 561 562
** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
The previous binding, introduced in Emacs 24.1, was a mistake, because
`C-c LETTER' bindings are reserved for user customizations.

563
** Internationalization
Glenn Morris's avatar
Glenn Morris committed
564

Chong Yidong's avatar
Chong Yidong committed
565
*** New language environment: Persian.
Glenn Morris's avatar
Glenn Morris committed
566

Chong Yidong's avatar
Chong Yidong committed
567 568
*** New input method `vietnamese-vni'.

569
** Nextstep (GNUstep / Mac OS X) port
Glenn Morris's avatar
Glenn Morris committed
570

Glenn Morris's avatar
Glenn Morris committed
571
*** Support for fullscreen and the frame parameter fullscreen.
Glenn Morris's avatar
Glenn Morris committed
572

573 574 575
*** A file dialog is used for open/save operations initiated from the
menu/toolbar.

Glenn Morris's avatar
Glenn Morris committed
576

577
* Editing Changes in Emacs 24.3
578

579
** Search and Replace
580

Chong Yidong's avatar
Chong Yidong committed
581 582 583 584
*** Non-regexp Isearch now performs "lax" space matching.
Each sequence of spaces in the supplied search string may match any
sequence of one or more whitespace characters, as specified by the
variable `search-whitespace-regexp'.  (This variable is also used by a
Glenn Morris's avatar
Glenn Morris committed
585
similar existing feature for regexp Isearch.)
Glenn Morris's avatar
Glenn Morris committed
586

Chong Yidong's avatar
Chong Yidong committed
587 588
*** New Isearch command `M-s SPC' toggles lax space matching.
This applies to both ordinary and regexp Isearch.
Glenn Morris's avatar
Glenn Morris committed
589

Chong Yidong's avatar
Chong Yidong committed
590 591 592
*** New option `replace-lax-whitespace'.
If non-nil, `query-replace' uses flexible whitespace matching too.
The default is nil.
Glenn Morris's avatar
Glenn Morris committed
593

594 595 596 597
*** Global `M-s _' starts a symbol (identifier) incremental search,
and `M-s _' in Isearch toggles symbol search mode.
`M-s c' in Isearch toggles search case-sensitivity.

598
** Navigation commands
599

600 601 602 603 604 605 606 607 608 609
*** New binding `M-g c' for `goto-char'.

*** New binding `M-g TAB' for `move-to-column'.

*** `M-g TAB' (`move-to-column') prompts for a column number if called
interactively with no prefix arg.  Previously, it moved to column 1.

** New option `yank-handled-properties' allows processing of text
properties on yanked text, in ways that are more general than just
removing them (as is done by `yank-excluded-properties').
610 611 612 613 614

** New option `delete-trailing-lines' specifies whether
M-x delete-trailing-whitespace should delete trailing lines at the end
of the buffer.  It defaults to t.

Chong Yidong's avatar
Chong Yidong committed
615
** `C-u M-=' now counts lines/words/characters in the entire buffer.
616

617 618
** `C-x 8 RET' is now bound to `insert-char', which is now a command.
`ucs-insert' is now an obsolete alias for `insert-char'.
619

620 621 622
** The `z' key no longer has a binding in most special modes.
It used to be bound to `kill-this-buffer', but `z' is too easy to
accidentally type.
Chong Yidong's avatar
Chong Yidong committed
623

624 625
** New command `C-x r M-w' (`copy-rectangle-as-kill').
It copies the region-rectangle as the last rectangle kill.
Chong Yidong's avatar
Chong Yidong committed
626

627
** Registers
Chong Yidong's avatar
Chong Yidong committed
628

Glenn Morris's avatar
Glenn Morris committed
629
*** `C-x r +' is now overloaded to invoke `append-to-register'.
Chong Yidong's avatar
Chong Yidong committed
630 631

*** New option `register-separator' specifies the register containing
Glenn Morris's avatar
Glenn Morris committed
632 633
the text to put between collected texts for use with
M-x append-to-register and M-x prepend-to-register.
634

Glenn Morris's avatar
Glenn Morris committed
635

636
* Changes in Specialized Modes and Packages in Emacs 24.3
Julien Danjou's avatar
Julien Danjou committed
637

638
** Common Lisp emulation (CL)
Chong Yidong's avatar
Chong Yidong committed
639

640
*** CL's main entry is now (require 'cl-lib).
Glenn Morris's avatar
Glenn Morris committed
641 642 643
`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
i.e., all its definitions have the "cl-" prefix (and internal definitions
use the "cl--" prefix).
644

Glenn Morris's avatar
Glenn Morris committed
645 646 647 648 649
If `cl' provided a feature under the name `foo', then `cl-lib'
provides it under the name `cl-foo' instead; with the exceptions of the
few `cl' definitions that had to use `foo*' to avoid conflicts with
pre-existing Elisp entities.  These have been renamed to `cl-foo'
rather than `cl-foo*'.
650

Glenn Morris's avatar
Glenn Morris committed
651
The old `cl' is now deprecated and is mainly just a bunch of aliases that
Glenn Morris's avatar
Glenn Morris committed
652
provide the old, non-prefixed names.  Some exceptions are listed below:
653

654 655
*** `cl-flet' is not like `flet' (which is deprecated).
Instead it obeys the behavior of Common-Lisp's `flet'.
Glenn Morris's avatar
Glenn Morris committed
656 657
In particular, in cl-flet function definitions are lexically scoped,
whereas in flet the scoping is dynamic.
658 659

*** `cl-labels' is slightly different from `labels'.
Glenn Morris's avatar
Glenn Morris committed
660 661 662 663
The difference is that it relies on the `lexical-binding' machinery
(as opposed to the `lexical-let' machinery used previously) to capture
definitions in closures, so such closures will only work if `lexical-binding'
is in use.
664

Glenn Morris's avatar
Glenn Morris committed
665
*** `cl-letf' is not exactly like `letf'.
666 667
The only difference is in details that relate to some deprecated usage
of `symbol-function' in place forms.
Glenn Morris's avatar
Glenn Morris committed
668

669
*** `progv' was rewritten to use the `let' machinery.
Glenn Morris's avatar
Glenn Morris committed
670 671
A side effect is that variables without corresponding values are bound
to nil rather than being made unbound.
672

Glenn Morris's avatar
Glenn Morris committed
673 674 675
*** The following methods of extending `setf' are obsolete
(use features from gv.el instead):
`define-modify-macro' (use `gv-letplace')
Glenn Morris's avatar
Glenn Morris committed
676 677
`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
Glenn Morris's avatar
Glenn Morris committed
678
`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
Glenn Morris's avatar
Glenn Morris committed
679

680
** Diff mode
Chong Yidong's avatar
Chong Yidong committed
681

682 683 684 685 686
*** Changes are now highlighted using the same color scheme as in
modern VCSes.  Deletions are displayed in red (new faces
`diff-refine-removed' and `smerge-refined-removed', and new definition
of `diff-removed'), insertions in green (new faces `diff-refine-added'
and `smerge-refined-added', and new definition of `diff-added').
Chong Yidong's avatar
Chong Yidong committed
687

688 689 690
*** The variable `diff-use-changed-face' defines whether to use the
face `diff-changed', or `diff-removed' and `diff-added' to highlight
changes in context diffs.
Glenn Morris's avatar
Glenn Morris committed
691

692 693
*** The new command `diff-delete-trailing-whitespace' removes trailing
whitespace introduced by a diff.
Chong Yidong's avatar
Chong Yidong committed
694

695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714
** Ediff now uses the same color scheme as Diff mode.

** Python mode

A new version of python.el, which provides several new features, including:
per-buffer shells, better indentation, Python 3 support, and improved
shell-interaction compatible with iPython (and virtually any other
text based shell).

*** Some user options have been replaced/renamed, including (old -> new):
**** python-indent -> python-indent-offset
**** python-guess-indent -> python-indent-guess-indent-offset
**** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
**** python-use-skeletons -> python-skeleton-autoinsert

*** Some user options have been removed, including:

**** `python-indent-string-contents': Strings are never indented.

**** `python-honour-comment-indentation':
715
Comments are always considered as indentation markers.
716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750

**** `python-continuation-offset': Indentation is automatically
calculated in a pep8 compliant way depending on the context.

**** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
Have no direct mapping as the shell interaction is completely different.

**** `python-python-command', `python-jython-command':
Replaced by `python-shell-interpreter'.

**** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
`python-pdbtrack-minor-mode-string', `python-source-modes':
No longer relevant.

*** Some commands have been replaced (old -> new):
**** python-insert-class -> python-skeleton-class
**** python-insert-def -> python-skeleton-def
**** python-insert-for -> python-skeleton-for
**** python-insert-if -> python-skeleton-if
**** python-insert-try/except -> python-skeleton-try
**** python-insert-try/finally -> python-skeleton-try
**** python-insert-while -> python-skeleton-while
**** python-find-function -> python-nav-jump-to-defun
**** python-next-statement -> python-nav-forward-sentence
**** python-previous-statement -> python-nav-backward-sentence
**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
**** python-end-of-defun-function -> python-nav-end-of-defun
**** python-send-buffer -> python-shell-send-buffer
**** python-send-defun -> python-shell-send-defun
**** python-send-region -> python-shell-send-region
**** python-send-region-and-go -> emulate with python-shell-send-region
and python-shell-switch-to-shell
**** python-send-string -> python-shell-send-string
**** python-switch-to-python -> python-shell-switch-to-shell
**** python-describe-symbol -> python-eldoc-at-point
Chong Yidong's avatar
Chong Yidong committed
751

Chong Yidong's avatar
Chong Yidong committed
752 753 754 755 756 757 758 759 760
** 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.

Glenn Morris's avatar
Glenn Morris committed
761 762
*** The function `dbus-call-method' is now non-blocking.
It can be interrupted by `C-g'.  `dbus-call-method-non-blocking' is obsolete.
Chong Yidong's avatar
Chong Yidong committed
763

Glenn Morris's avatar
Glenn Morris committed
764
*** Signals can also be sent as unicast messages.
Chong Yidong's avatar
Chong Yidong committed
765 766

*** The argument list of `dbus-register-signal' has been extended,
767
according to the new match rule types of D-Bus.
Chong Yidong's avatar
Chong Yidong committed
768 769 770 771 772

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

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

773 774
** `desktop-path' no longer includes the "." directory.
Desktop files are now located in ~/.emacs.d by default.
Chong Yidong's avatar
Chong Yidong committed
775 776

** Dired
Glenn Morris's avatar
Glenn Morris committed
777

Chong Yidong's avatar
Chong Yidong committed
778 779 780
*** `dired-do-async-shell-command' executes each file sequentially
if the command ends in `;' (when operating on multiple files).
Otherwise, it executes the command on each file in parallel.
Glenn Morris's avatar
Glenn Morris committed
781

Glenn Morris's avatar
Glenn Morris committed
782 783
*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
`dired-do-chown', and `dired-do-touch' yanks the attributes of the
Chong Yidong's avatar
Chong Yidong committed
784
file at point.
Glenn Morris's avatar
Glenn Morris committed
785

Chong Yidong's avatar
Chong Yidong committed
786
*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
Glenn Morris's avatar
Glenn Morris committed
787
`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
Chong Yidong's avatar
Chong Yidong committed
788
mark/unmark/flag all files in the active region.
Glenn Morris's avatar
Glenn Morris committed
789

Chong Yidong's avatar
Chong Yidong committed
790 791 792
*** The minibuffer default for `=' (`dired-diff) has changed.
It is now the backup file for the file at point, if one exists.
In Transient Mark mode the default is the file at the active mark.
Glenn Morris's avatar
Glenn Morris committed
793

Chong Yidong's avatar
Chong Yidong committed
794 795 796
*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
The global binding for `M-=', `count-words-region' is in effect.

Glenn Morris's avatar
Glenn Morris committed
797 798
** ERC

799 800
*** New module "notifications", which can send a notification when you
receive a private message or your nickname is mentioned.
Glenn Morris's avatar
Glenn Morris committed
801 802 803

*** ERC will look up server/channel names via auth-source and use any
channel keys found.
Chong Yidong's avatar
Chong Yidong committed
804

Glenn Morris's avatar
Glenn Morris committed
805 806
*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
only applies to messages sent by lurkers.
807

808
** reStructuredText mode
Chong Yidong's avatar
Chong Yidong committed
809

810 811 812
*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
fontification, comment handling, and customization have all been revised
and improved.
Chong Yidong's avatar
Chong Yidong committed
813

814
*** Support for `imenu' and `which-function-mode'.
Chong Yidong's avatar
Chong Yidong committed
815

816 817
*** The reStructuredText syntax is more closely covered.
Sphinx support has been improved.
Chong Yidong's avatar
Chong Yidong committed
818

819
*** `rst-insert-list' inserts new list or continues existing lists.
Chong Yidong's avatar
Chong Yidong committed
820

821
*** A negative prefix argument always works for `rst-adjust'.
Chong Yidong's avatar
Chong Yidong committed
822

823
*** The window configuration is reset after displaying a TOC.
824

825
*** The constant `rst-version' describes the rst.el package version.
Glenn Morris's avatar
Glenn Morris committed
826

Glenn Morris's avatar
Glenn Morris committed
827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849
** Ruby mode

*** Support for percent literals and recognition of regular expressions
in method calls without parentheses with more methods, including Cucumber
steps definitions.

*** Improved syntax highlighting and indentation.

*** New command `ruby-toggle-block', bound to `C-c {'.

*** Some non-standard keybindings/commands have been removed:

**** `ruby-electric-brace'; use `electric-indent-mode' instead.

**** `ruby-mark-defun'; use `mark-defun'.

**** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
appropriate settings for the variables `beginning-of-defun-function'
and `end-of-defun-function'.

**** Non-standard keybindings for `backward-kill-word', `comment-region',
`reindent-then-newline-and-indent' and `newline' have been removed.

850
** Shell Script mode
851

852
*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
853

854
*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
855

856
*** `sh-use-smie' lets you choose a new indentation and navigation code.
857

858
** VHDL mode
859

860
*** The free software compiler GHDL is supported (and now the default).
861

862
*** Support for the VHDL-AMS packages has been added/updated.
863

864
*** Updated to the 2002 revision of the VHDL standard.
865

866
*** Accepts \r and \f as whitespace.
867

868
** Apropos
869

870 871 872
*** 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.
873

874 875
*** The old options whose values specified faces to use have been removed
(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
876

877
** Buffer Menu
878

879
*** This package has been rewritten to use Tabulated List mode.
880

881 882
*** Option `Buffer-menu-buffer+size-width' is now obsolete.
Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
883

884 885 886 887 888 889
** Calc

*** Algebraic simplification mode is now the default.
To restrict to the limited simplifications given by the former
default simplification mode, use `m I'.

890
** Calendar
891

892 893
*** You can customize the header text that appears above each calendar month.
See the variable `calendar-month-header'.
894

895
*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
896

897 898
*** The calendars produced by cal-html include holidays.
Customize `cal-html-holidays' to change this.
899

Glenn Morris's avatar
Glenn Morris committed
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
** CEDET

*** The major modes from the parser generators "Bovine" and "Wisent"
are now properly integrated in Emacs.  The file suffixes ".by" and ".wy"
are in `auto-mode-alist', and the corresponding manuals are included.

*** EDE

**** Menu support for the "Configuration" feature.  This allows users to
choose the active configuration (such as debug or install) from the menu.

**** New command `ede-set' to interactively set project-local variables.

**** Support for compiling, debugging, and running in "generic" projects.

**** Autoconf editing support for M4 macros with complex arguments.

**** Compilation support for the "linux" project type.

**** "simple" projects have been removed; use "generic" projects instead.

*** Semantic

**** Support for parsing #include statements inside a namespace in C/C++.

**** Improved support for 'extern "C"' declarations in C/C++.

**** The ability to ignore more common special C/C++ preprocessor symbols,
such as '__nonnull' and '__asm'.  Add '__cplusplus' macro when parsing C++.
If available, include cdefs.h as an additional source of preprocessor symbols.

**** Improved C/C++ function pointer parsing.

**** In Python, support for converting imports to include file names.

**** Ability to dynamically determine the Python load path.

**** Support for the Python 'WITH' and 'AT' keywords.

**** Improved tooltip completion.

*** SRecode

**** The SRecode manual is now included.

**** Tag generation supports constructor/destructor settings and system
include differentiation.

**** Addition of 'Framework' support: Frameworks are specified when a
particular kind of library (such as Android) is needed in a common language
mode (like Java).

**** Support for nested templates and let variables override based on priority.

**** Support for merging tables from multiple related modes, such as
default -> c++ -> arduino.

957
** Compile has a new option `compilation-always-kill'.
958

959
** Customize
Chong Yidong's avatar
Chong Yidong committed
960

961
*** `custom-reset-button-menu' now defaults to t.
Chong Yidong's avatar
Chong Yidong committed
962

963 964 965
*** Non-option variables are never matched in `customize-apropos' and
`customize-apropos-options' (i.e., the prefix argument does nothing for
these commands now).
966

Chong Yidong's avatar
Chong Yidong committed
967
** Term
968

Glenn Morris's avatar
Glenn Morris committed
969 970
*** The variables `term-default-fg-color' and `term-default-bg-color'
are now deprecated in favor of the customizable face `term'.
971

Glenn Morris's avatar
Glenn Morris committed
972 973 974
*** You can customize how to display ANSI terminal colors and styles
by customizing the corresponding `term-color-<COLOR>',
`term-color-underline' and `term-color-bold' faces.
975

Michael Albinus's avatar
Michael Albinus committed
976
** Tramp
Glenn Morris's avatar
Glenn Morris committed
977

Glenn Morris's avatar
Glenn Morris committed
978
*** The syntax has been extended in order to allow ad-hoc proxy definitions.
Michael Albinus's avatar
Michael Albinus committed
979

Glenn Morris's avatar
Glenn Morris committed
980
*** Remote processes are now also supported on remote MS-Windows hosts.
Michael Albinus's avatar
Michael Albinus committed
981

982
** URL
Glenn Morris's avatar
Glenn Morris committed
983

984 985 986
*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
Previously, this slot stored semicolon-separated attribute-value pairs
appended to some imap URLs, but this is not compatible with RFC 3986.
Glenn Morris's avatar
Glenn Morris committed
987
So now the `filename' slot stores the entire path and query components,
988
and the `attributes' slot is always nil.
Glenn Morris's avatar
Glenn Morris committed
989

990 991 992 993
*** New function `url-encode-url' for encoding a URI string.
The `url-retrieve' function now uses this to encode its URL argument,
in case that is not properly encoded.

994 995 996
** notifications.el supports now version 1.2 of the Notifications API.
The function `notifications-get-capabilities' returns the supported
server properties.
Chong Yidong's avatar
Chong Yidong committed
997

998 999 1000
** Flymake uses fringe bitmaps to indicate errors and warnings.
See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
`flymake-warning-bitmap'.
Chong Yidong's avatar
Chong Yidong committed
1001

1002 1003 1004
** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
specifying URL types that should be converted to remote file names at
the FFAP prompt.  The default is now '("ftp").
Chong Yidong's avatar
Chong Yidong committed
1005

1006 1007
** New Ibuffer `derived-mode' filter, bound to `/ M'.
The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
Chong Yidong's avatar
Chong Yidong committed
1008

1009 1010
** New option `mouse-avoidance-banish-position' specifies where the
`banish' mouse avoidance setting moves the mouse.
1011

1012 1013
** 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.
Chong Yidong's avatar
Chong Yidong committed
1014

1015
** In Proced mode, new command `proced-renice' renices marked processes.
Chong Yidong's avatar
Chong Yidong committed
1016

1017 1018 1019
** New option `async-shell-command-buffer' specifies the buffer to use
for a new asynchronous `shell-command' when the default output buffer
`*Async Shell Command*' is already in use.
Chong Yidong's avatar
Chong Yidong committed
1020

1021 1022 1023 1024
** SQL mode has a new option `sql-db2-escape-newlines'.
If non-nil, newlines sent to the command interpreter will be escaped
by a backslash.  The default does not escape the newlines and assumes
that the sql statement will be terminated by a semicolon.
Chong Yidong's avatar
Chong Yidong committed
1025