NEWS 99.8 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
* Startup Changes in Emacs 24.4
* Changes in Emacs 24.4
33

34 35 36 37 38 39 40
+++
** `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.

41 42 43 44
+++
** `eval-defun' on an already defined defcustom calls the :set function,
if there is one.

45 46 47 48
** 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.

49 50 51
** `initial-buffer-choice' can now specify a function to set up the
initial buffer.

52 53 54 55 56
** 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
57 58 59
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.
60

61 62
** New option `scroll-bar-adjust-thumb-portion'.

63
* Editing Changes in Emacs 24.4
64

65 66
** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
67

68

69
* Changes in Specialized Modes and Packages in Emacs 24.4
70

71 72
** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.

73 74 75
** completing-read-multiple's separator can now be a regexp.
The default separator is changed to allow surrounding spaces around the comma.

76 77 78 79
** Battery

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

80 81 82 83 84 85 86
** cl-lib

*** New macro cl-tagbody.

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

87 88 89 90 91 92 93 94 95 96 97 98 99 100
** 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.

101 102 103 104 105 106 107 108 109 110 111
** 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.

112 113 114 115 116 117 118
** Image mode
---
*** 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.

119 120 121 122 123
** 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
124 125 126
** MH-E has been updated to MH-E version 8.4.
See MH-E-NEWS for details.

127 128 129 130 131 132 133 134
---
** 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.

135 136 137
+++
** New function `ses-rename-cell' to give SES cells arbitrary names.

138 139 140 141 142 143 144 145 146
** 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.

147 148 149 150 151
** 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.

152 153 154 155 156
** Tramp
+++
*** New connection method "adb", which allows to access Android
devices by the Android Debug Bridge.  The variable `tramp-adb-sdk-dir'
must be set to the Android SDK installation directory.
157 158 159
+++
*** Handlers for `file-acl' and `set-file-acl' for remote machines
which support POSIX ACLs.
160

161 162 163 164 165
** Woman

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

Chong Yidong's avatar
Chong Yidong committed
166 167 168 169
** Obsolete packages:

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

Chong Yidong's avatar
Chong Yidong committed
170 171
*** terminal.el is obsolete; use term.el instead.

172

173
* New Modes and Packages in Emacs 24.4
174 175 176 177 178 179 180
** 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.

181
* Incompatible Lisp Changes in Emacs 24.4
182

183 184 185 186
** 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.

187 188 189 190
** 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.

191 192
** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
193

194 195 196 197
** `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.

198 199 200 201 202 203
** 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'.

204
* Lisp changes in Emacs 24.4
205

206 207 208
** Support for filesystem notifications.
Emacs now supports notifications of filesystem changes, such as
creation, modification, and deletion of files.  This requires the
209 210
'inotify' API on GNU/Linux systems.  On MS-Windows systems, this is
supported for Windows XP and newer versions.
211

212 213 214 215 216 217 218 219 220 221
** 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).

222 223 224
*** New face characteristic (supports :underline (:style wave))
specifies whether or not the terminal can display a wavy line.

225
** time-to-seconds is not obsolete any more.
226
** New function special-form-p.
227 228 229
** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
text-property on the first char.

230 231 232
** The `defalias-fset-function' property lets you catch calls to defalias
and redirect them to your own function instead of `fset'.

233 234 235 236 237 238 239 240 241 242 243
** 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'.

244 245 246 247
** The 6th argument to `copy-file' has been renamed to
`preserve-extended-attributes' as it now handles both SELinux context
and ACL entries.

248 249
* Changes in Emacs 24.4 on non-free operating systems

250 251 252 253 254
+++
** 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.

Glenn Morris's avatar
Glenn Morris committed
255

256
* Installation Changes in Emacs 24.3
257

258
** The default X toolkit is now Gtk+ version 3.
Glenn Morris's avatar
Glenn Morris committed
259 260 261
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
262
You can explicitly require a specific version by passing
Glenn Morris's avatar
Glenn Morris committed
263
`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
264

265
** New configure option `--enable-link-time-optimization', to utilize
266 267
an appropriate feature provided by GCC since version 4.5.0.

Glenn Morris's avatar
Glenn Morris committed
268 269
** New configure option `--without-all' to disable most of the optional
features (image support, etc.) that are normally enabled by default.
270

Glenn Morris's avatar
Glenn Morris committed
271 272 273 274 275
** New configure option `--enable-gcc-warnings' (for developing/debugging
Emacs).  If building with GCC, this enables compile-time checks that
warn about possibly-questionable C code.  On a recent GNU system there
should be no warnings; on older and on non-GNU systems the generated
warnings may be useful.
276

Glenn Morris's avatar
Glenn Morris committed
277
** The configure option `--enable-use-lisp-union-type' has been
278
renamed to `--enable-check-lisp-object-type', as the resulting
Glenn Morris's avatar
Glenn Morris committed
279 280 281
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
282
** The configure option `--disable-maintainer-mode' has been removed,
283 284
as it was confusingly-named and rarely useful.

Glenn Morris's avatar
Glenn Morris committed
285 286 287 288 289
** 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.
290

Glenn Morris's avatar
Glenn Morris committed
291 292
** You can use `NO_BIN_LINK=t make install' to prevent the installation
overwriting "emacs" in the installation bin/ directory with a link
293
to "emacs-VERSION".
Glenn Morris's avatar
Glenn Morris committed
294

295 296
** Emacs uses libtinfo in preference to libncurses, if available.

297 298 299 300
** 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.

301
** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
Glenn Morris's avatar
Glenn Morris committed
302 303 304
(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
305

306
* Startup Changes in Emacs 24.3
307 308 309

** 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
310
been adding them there, put them somewhere else; e.g., site-lisp.
311

Glenn Morris's avatar
Glenn Morris committed
312 313
** The `--no-site-lisp' command line option now works for Nextstep builds.

Glenn Morris's avatar
Glenn Morris committed
314

315
* Changes in Emacs 24.3
Glenn Morris's avatar
Glenn Morris committed
316

317
** Help
318

319
*** `C-h f' (`describe-function') can now perform autoloading.
320 321 322 323 324 325 326 327 328
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).

329
** ImageMagick
330

331 332
*** Images displayed via ImageMagick now support transparency and the
:background image specification property.
333

334
*** When available, ImageMagick support is automatically enabled.
335 336
It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
337
automatically at startup, or when customizing an imagemagick- option.
Glenn Morris's avatar
Glenn Morris committed
338

339
*** Setting `imagemagick-types-inhibit' to t now disables the use of
Glenn Morris's avatar
Glenn Morris committed
340 341
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
342

343
*** The new variable `imagemagick-enabled-types' also affects which
344 345 346
ImageMagick types are treated as images.  The function
`imagemagick-filter-types' returns the list of types that will be
treated as images.
347

348 349 350 351
** Minibuffer

*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
next and previous path separator, respectively.
352

353 354 355 356 357 358 359 360 361 362 363 364 365 366
*** `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
367

Chong Yidong's avatar
Chong Yidong committed
368 369 370
*** 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
371

Chong Yidong's avatar
Chong Yidong committed
372 373 374 375 376
*** 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
377
that support backtraces.
378

379 380 381 382 383 384 385 386 387 388
** `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
389 390
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about the bzr revision used.
391

392
** New option `create-lockfiles' specifies usage of lockfiles.
Chong Yidong's avatar
Chong Yidong committed
393 394
It defaults to t.  Changing it to nil inhibits the creation of lock
files (use this with caution).
395

396 397
** New option `enable-remote-dir-locals', if non-nil, allows directory-local
variables on remote hosts.
398

Chong Yidong's avatar
Chong Yidong committed
399 400 401
** The entry for PCL-CVS has been removed from the Tools menu.
The PCL-CVS commands are still available via the keyboard.

402 403 404 405
** Using "unibyte: t" in Lisp source files is obsolete.
Use "coding: raw-text" instead.

** Internationalization
Glenn Morris's avatar
Glenn Morris committed
406

Chong Yidong's avatar
Chong Yidong committed
407
*** New language environment: Persian.
Glenn Morris's avatar
Glenn Morris committed
408

Chong Yidong's avatar
Chong Yidong committed
409 410
*** New input method `vietnamese-vni'.

411
** Nextstep (GNUstep / Mac OS X) port
Glenn Morris's avatar
Glenn Morris committed
412

Glenn Morris's avatar
Glenn Morris committed
413
*** Support for fullscreen and the frame parameter fullscreen.
Glenn Morris's avatar
Glenn Morris committed
414

415 416 417
*** A file dialog is used for open/save operations initiated from the
menu/toolbar.

Glenn Morris's avatar
Glenn Morris committed
418

419
* Editing Changes in Emacs 24.3
420

421
** Search and Replace
422

Chong Yidong's avatar
Chong Yidong committed
423 424 425 426
*** 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
427
similar existing feature for regexp Isearch.)
Glenn Morris's avatar
Glenn Morris committed
428

Chong Yidong's avatar
Chong Yidong committed
429 430
*** 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
431

Chong Yidong's avatar
Chong Yidong committed
432 433 434
*** 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
435

436 437 438 439
*** 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.

440
** Navigation commands
441

442 443 444 445 446 447 448 449 450 451
*** 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').
452 453 454 455 456

** 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
457
** `C-u M-=' now counts lines/words/characters in the entire buffer.
458

459 460
** `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'.
461

462 463 464
** 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
465

466 467
** 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
468

469
** Registers
Chong Yidong's avatar
Chong Yidong committed
470

Glenn Morris's avatar
Glenn Morris committed
471
*** `C-x r +' is now overloaded to invoke `append-to-register'.
Chong Yidong's avatar
Chong Yidong committed
472 473

*** New option `register-separator' specifies the register containing
Glenn Morris's avatar
Glenn Morris committed
474 475
the text to put between collected texts for use with
M-x append-to-register and M-x prepend-to-register.
476

Glenn Morris's avatar
Glenn Morris committed
477

478
* Changes in Specialized Modes and Packages in Emacs 24.3
Julien Danjou's avatar
Julien Danjou committed
479

480
** Common Lisp emulation (CL)
Chong Yidong's avatar
Chong Yidong committed
481

482
*** CL's main entry is now (require 'cl-lib).
Glenn Morris's avatar
Glenn Morris committed
483 484 485
`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).
486

Glenn Morris's avatar
Glenn Morris committed
487 488 489 490 491
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*'.
492

Glenn Morris's avatar
Glenn Morris committed
493
The old `cl' is now deprecated and is mainly just a bunch of aliases that
Glenn Morris's avatar
Glenn Morris committed
494
provide the old, non-prefixed names.  Some exceptions are listed below:
495

496 497
*** `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
498 499
In particular, in cl-flet function definitions are lexically scoped,
whereas in flet the scoping is dynamic.
500 501

*** `cl-labels' is slightly different from `labels'.
Glenn Morris's avatar
Glenn Morris committed
502 503 504 505
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.
506

Glenn Morris's avatar
Glenn Morris committed
507
*** `cl-letf' is not exactly like `letf'.
508 509
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
510

511
*** `progv' was rewritten to use the `let' machinery.
Glenn Morris's avatar
Glenn Morris committed
512 513
A side effect is that variables without corresponding values are bound
to nil rather than being made unbound.
514

Glenn Morris's avatar
Glenn Morris committed
515 516 517
*** 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
518 519
`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
520
`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
Glenn Morris's avatar
Glenn Morris committed
521

522
** Diff mode
Chong Yidong's avatar
Chong Yidong committed
523

524 525 526 527 528
*** 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
529

530 531 532
*** 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
533

534 535
*** The new command `diff-delete-trailing-whitespace' removes trailing
whitespace introduced by a diff.
Chong Yidong's avatar
Chong Yidong committed
536

537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556
** 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':
557
Comments are always considered as indentation markers.
558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592

**** `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
593

Chong Yidong's avatar
Chong Yidong committed
594 595 596 597 598 599 600 601 602
** 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
603 604
*** 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
605

Glenn Morris's avatar
Glenn Morris committed
606
*** Signals can also be sent as unicast messages.
Chong Yidong's avatar
Chong Yidong committed
607 608

*** The argument list of `dbus-register-signal' has been extended,
609
according to the new match rule types of D-Bus.
Chong Yidong's avatar
Chong Yidong committed
610 611 612 613 614

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

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

615 616
** `desktop-path' no longer includes the "." directory.
Desktop files are now located in ~/.emacs.d by default.
Chong Yidong's avatar
Chong Yidong committed
617 618

** Dired
Glenn Morris's avatar
Glenn Morris committed
619

Chong Yidong's avatar
Chong Yidong committed
620 621 622
*** `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
623

Glenn Morris's avatar
Glenn Morris committed
624 625
*** 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
626
file at point.
Glenn Morris's avatar
Glenn Morris committed
627

Chong Yidong's avatar
Chong Yidong committed
628
*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
Glenn Morris's avatar
Glenn Morris committed
629
`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
Chong Yidong's avatar
Chong Yidong committed
630
mark/unmark/flag all files in the active region.
Glenn Morris's avatar
Glenn Morris committed
631

Chong Yidong's avatar
Chong Yidong committed
632 633 634
*** 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
635

Chong Yidong's avatar
Chong Yidong committed
636 637 638
*** `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
639 640
** ERC

641 642
*** 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
643 644 645

*** ERC will look up server/channel names via auth-source and use any
channel keys found.
Chong Yidong's avatar
Chong Yidong committed
646

Glenn Morris's avatar
Glenn Morris committed
647 648
*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
only applies to messages sent by lurkers.
649

650
** reStructuredText mode
Chong Yidong's avatar
Chong Yidong committed
651

652 653 654
*** 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
655

656
*** Support for `imenu' and `which-function-mode'.
Chong Yidong's avatar
Chong Yidong committed
657

658 659
*** The reStructuredText syntax is more closely covered.
Sphinx support has been improved.
Chong Yidong's avatar
Chong Yidong committed
660

661
*** `rst-insert-list' inserts new list or continues existing lists.
Chong Yidong's avatar
Chong Yidong committed
662

663
*** A negative prefix argument always works for `rst-adjust'.
Chong Yidong's avatar
Chong Yidong committed
664

665
*** The window configuration is reset after displaying a TOC.
666

667
*** The constant `rst-version' describes the rst.el package version.
Glenn Morris's avatar
Glenn Morris committed
668

669
** Shell Script mode
670

671
*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
672

673
*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
674

675
*** `sh-use-smie' lets you choose a new indentation and navigation code.
676

677
** VHDL mode
678

679
*** The free software compiler GHDL is supported (and now the default).
680

681
*** Support for the VHDL-AMS packages has been added/updated.
682

683
*** Updated to the 2002 revision of the VHDL standard.
684

685
*** Accepts \r and \f as whitespace.
686

687
** Apropos
688

689 690 691
*** 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.
692

693 694
*** The old options whose values specified faces to use have been removed
(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
695

696
** Buffer Menu
697

698
*** This package has been rewritten to use Tabulated List mode.
699

700 701
*** Option `Buffer-menu-buffer+size-width' is now obsolete.
Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
702

703
** Calendar
704

705 706
*** You can customize the header text that appears above each calendar month.
See the variable `calendar-month-header'.
707

708
*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
709

710 711
*** The calendars produced by cal-html include holidays.
Customize `cal-html-holidays' to change this.
712

713
** Compile has a new option `compilation-always-kill'.
714

715
** Customize
Chong Yidong's avatar
Chong Yidong committed
716

717
*** `custom-reset-button-menu' now defaults to t.
Chong Yidong's avatar
Chong Yidong committed
718

719 720 721
*** Non-option variables are never matched in `customize-apropos' and
`customize-apropos-options' (i.e., the prefix argument does nothing for
these commands now).
722

Chong Yidong's avatar
Chong Yidong committed
723
** Term
724

Glenn Morris's avatar
Glenn Morris committed
725 726
*** The variables `term-default-fg-color' and `term-default-bg-color'
are now deprecated in favor of the customizable face `term'.
727

Glenn Morris's avatar
Glenn Morris committed
728 729 730
*** 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.
731

Michael Albinus's avatar
Michael Albinus committed
732
** Tramp
Glenn Morris's avatar
Glenn Morris committed
733

Glenn Morris's avatar
Glenn Morris committed
734
*** The syntax has been extended in order to allow ad-hoc proxy definitions.
Michael Albinus's avatar
Michael Albinus committed
735

Glenn Morris's avatar
Glenn Morris committed
736
*** Remote processes are now also supported on remote MS-Windows hosts.
Michael Albinus's avatar
Michael Albinus committed
737

738
** URL
Glenn Morris's avatar
Glenn Morris committed
739

740 741 742
*** 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
743
So now the `filename' slot stores the entire path and query components,
744
and the `attributes' slot is always nil.
Glenn Morris's avatar
Glenn Morris committed
745

746 747 748 749
*** 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.

750 751 752
** 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
753

754 755 756
** 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
757

758 759 760
** 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
761

762 763
** 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
764

765 766
** New option `mouse-avoidance-banish-position' specifies where the
`banish' mouse avoidance setting moves the mouse.
767

768 769
** 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
770

771
** In Proced mode, new command `proced-renice' renices marked processes.
Chong Yidong's avatar
Chong Yidong committed
772

773 774 775
** 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
776

777 778 779 780
** 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
781

782 783 784
** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
(and modes that derive from it), sorts the column at point, or the Nth
column if a numeric prefix argument is given.
Chong Yidong's avatar
Chong Yidong committed
785

Glenn Morris's avatar
Glenn Morris committed
786
** `which-func-modes' now defaults to t, so Which Function mode, when
787
enabled, applies to all applicable major modes.
Chong Yidong's avatar
Chong Yidong committed
788

789
** `winner-mode-hook' now runs when the mode is disabled, as well as when
Glenn Morris's avatar
Glenn Morris committed
790
it is enabled.
Chong Yidong's avatar
Chong Yidong committed
791

792 793 794 795
** Follow mode no longer works by using advice.
The option `follow-intercept-processes' has been removed.

** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
Chong Yidong's avatar
Chong Yidong committed
796

Stefan Monnier's avatar
Stefan Monnier committed
797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
** Hooks renamed to avoid obsolete "-hooks" suffix:
*** semantic-lex-reset-hooks -> semantic-lex-reset-functions
*** semantic-change-hooks -> semantic-change-functions
*** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
*** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
*** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
*** semanticdb-save-database-hooks -> semanticdb-save-database-functions
*** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
*** rcirc-sentinel-hooks -> rcirc-sentinel-functions
*** rcirc-receive-message-hooks -> rcirc-receive-message-functions
*** rcirc-activity-hooks -> rcirc-activity-functions
*** rcirc-print-hooks -> rcirc-print-functions
*** dbus-event-error-hooks -> dbus-event-error-functions
*** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
*** checkdoc-style-hooks -> checkdoc-style-functions
*** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
*** archive-extract-hooks -> archive-extract-hook
*** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
*** hfy-post-html-hooks -> hfy-post-html-hook
*** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
*** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
*** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
*** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
Chong Yidong's avatar
Chong Yidong committed
820

821
** Obsolete packages
Glenn Morris's avatar
Glenn Morris committed
822

823 824 825 826
*** assoc.el
In most cases, assoc+member+push+delq work just as well.
And in any case it's just a terrible package: ugly semantics, terrible
inefficiency, and not namespace-clean.
827
*** bruce.el
Glenn Morris's avatar
Glenn Morris committed
828
*** cust-print.el
Glenn Morris's avatar
Glenn Morris committed
829
*** ledit.el
Glenn Morris's avatar
Glenn Morris committed
830
*** mailpost.el
831
*** mouse-sel.el
832
*** patcomp.el
833

Glenn Morris's avatar
Glenn Morris committed
834

835
* Incompatible Lisp Changes in Emacs 24.3
836

837 838 839 840
** Docstrings starting with `*' no longer indicate user options.
Only variables defined using `defcustom' are considered user options.
The function `user-variable-p' is now an obsolete alias for
`custom-variable-p'.
841

842 843 844 845
** The return values of `defalias', `defun' and `defmacro' have changed,
and are now undefined.  For backwards compatibility, `defun' and
`defmacro' currently return the name of the newly defined
function/macro, but this should not be relied upon.
846

Glenn Morris's avatar
Glenn Morris committed
847 848
** `random' by default now returns a different random sequence in
every Emacs run.  Use `(random S)', where S is a string, to set the
849 850 851
random seed to a value based on S, in order to get a repeatable
sequence in later calls.

852 853 854 855
** If the NEWTEXT arg to `replace-match' contains a substring "\?",
that substring is inserted literally even if the LITERAL arg is
non-nil, instead of causing an error to be signaled.

856 857 858
** `select-window' now always makes the window's buffer current.
It does so even if the window was selected before.

859 860 861
** The function `x-select-font' can return a font spec, instead of a
font name as a string.  Whether it returns a font spec or a font name
depends on the graphical library.
862

863 864 865
** `face-spec-set' no longer sets frame-specific attributes when the
third argument is a frame (that usage was obsolete since Emacs 22.2).

866
** `set-buffer-multibyte' now signals an error in narrowed buffers.
867

868 869 870 871 872 873
** The CL package's `get-setf-method' function no longer exists.
Generalized variables are now part of core Emacs Lisp, and implemented
differently to the way cl.el used to do it.  It is not possible to
define a compatible replacement for `get-setf-method'.  See the file
gv.el for internal details of the new implementation.

874 875 876
** The arguments of `dbus-register-signal' are no longer just strings,
but keywords or keyword-string pairs.  The old argument list will
still be supported for Emacs 24.x.
877

878
** Miscellaneous name changes
Glenn Morris's avatar
Glenn Morris committed
879 880
Some Lisp symbols have been renamed to correct their spelling,
or to be more consistent with standard Emacs terminology.
881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898

*** Renamed functions
**** hangul-input-method-inactivate -> hangul-input-method-deactivate
**** inactivate-input-method -> deactivate-input-method
**** quail-inactivate -> quail-deactivate
**** robin-inactivate -> robin-deactivate
**** viper-inactivate-input-method -> viper-deactivate-input-method
**** viper-inactivate-input-method-action ->
     viper-deactivate-input-method-action
**** ucs-input-inactivate -> ucs-input-deactivate

*** Renamed hooks
The old hooks are still supported for backward compatibility, but they
are deprecated and will be removed eventually.
**** input-method-inactivate-hook -> input-method-deactivate-hook
**** robin-inactivate-hook -> robin-deactivate-hook
**** quail-inactivate-hook -> quail-deactivate-hook

899
*** Renamed variables
900 901 902 903
**** follow-deactive-menu -> follow-inactive-menu
**** inactivate-current-input-method-function ->
     deactivate-current-input-method-function

Glenn Morris's avatar
Glenn Morris committed
904 905
** Some obsolete functions, variables, and faces have been removed:
*** `last-input-char', `last-command-char', `unread-command-char'
906 907
*** `facemenu-unlisted-faces'
*** `rmail-decode-mime-charset'
908 909 910
*** `iswitchb-read-buffer'
*** `sc-version', `sc-submit-bug-report'
*** `set-char-table-default'
Glenn Morris's avatar
Glenn Morris committed
911
*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
912
*** `compile-internal'
Glenn Morris's avatar
Glenn Morris committed
913
*** `modeline'
914
*** `mode-line-inverse-video'
Glenn Morris's avatar
Glenn Morris committed
915
*** `follow-mode-off-hook'
916
*** `cvs-commit-buffer-require-final-newline'
Glenn Morris's avatar
Glenn Morris committed
917
(use `log-edit-require-final-newline' instead)
918 919 920 921 922 923
*** `cvs-changelog-full-paragraphs'
(use `log-edit-changelog-full-paragraphs' instead)
*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
*** `vc-master-templates' (use `vc-handled-backends' instead)
*** `vc-checkout-carefully'
924

Glenn Morris's avatar
Glenn Morris committed
925

926
* Lisp changes in Emacs 24.3
927

928
** CL-style generalized variables are now in core Elisp.
Chong Yidong's avatar
Chong Yidong committed
929
`setf' is autoloaded; `push' and `pop' accept generalized variables.
930 931
You can define your own generalized variables using `gv-define-simple-setter',
`gv-define-setter', etc.
932

933 934 935 936 937 938 939 940 941 942 943 944 945
** Emacs tries to macroexpand interpreted (non-compiled) files during load.
This can significantly speed up execution of non-byte-compiled code,
but can also bump into previously unnoticed cyclic dependencies.
These are generally harmless: they will simply cause the macro calls
to be left for later expansion (as before), but will result in a
warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
You may wish to restructure your code so this does not happen.

** New sampling-based Elisp profiler.
Try M-x profiler-start, do some work, and then call M-x profiler-report.
When finished, use M-x profiler-stop.  The sampling rate can be based on
CPU time or memory allocations.

946 947 948
** `defun' also accepts a (declare DECLS) form, like `defmacro'.
The interpretation of the DECLS is determined by `defun-declarations-alist'.

949 950 951
** New macros `setq-local' and `defvar-local'.

** Face underlining can now use a wave.
Glenn Morris's avatar
Glenn Morris committed