NEWS 96.3 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

Glenn Morris's avatar
Glenn Morris committed
3
Copyright (C) 2010-2012 Free Software Foundation, Inc.
4
See the end of the file for license conditions.
Dave Love's avatar
#  
Dave Love committed
5

6
Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 8
If possible, use M-x report-emacs-bug.

9
This file is about changes in Emacs version 24.
10

11 12
See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
and NEWS.1-17 for changes in older Emacs versions.
13 14 15

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

Glenn Morris's avatar
Glenn Morris committed
17 18 19 20 21 22
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 25 26 27

* Installation Changes in Emacs 24.4
* Startup Changes in Emacs 24.4
* Changes in Emacs 24.4
* Editing Changes in Emacs 24.4
28 29


30
* Changes in Specialized Modes and Packages in Emacs 24.4
31

32 33 34 35 36 37 38 39 40 41 42 43 44 45
** 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.

46 47 48 49 50 51 52 53 54 55 56
** 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.

Bill Wohler's avatar
Bill Wohler committed
57 58 59
** MH-E has been updated to MH-E version 8.4.
See MH-E-NEWS for details.

60 61 62
+++
** New function `ses-rename-cell' to give SES cells arbitrary names.

63 64 65 66 67 68 69 70 71
** 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.

72 73 74 75 76
** 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.

77 78 79 80 81
** Woman

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

Chong Yidong's avatar
Chong Yidong committed
82 83 84 85
** Obsolete packages:

*** longlines.el is obsolete; use visual-line-mode instead.

Chong Yidong's avatar
Chong Yidong committed
86 87
*** terminal.el is obsolete; use term.el instead.

88

89
* New Modes and Packages in Emacs 24.4
90 91 92 93 94 95 96
** 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.

97
* Incompatible Lisp Changes in Emacs 24.4
98

99 100 101 102
** 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.

103 104
** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
105

106 107 108 109
** `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.

110
* Lisp changes in Emacs 24.4
111

112 113 114 115 116 117 118 119 120 121
** 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).

122
** time-to-seconds is not obsolete any more.
123
** New function special-form-p.
124 125 126
** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
text-property on the first char.

127 128 129
** The `defalias-fset-function' property lets you catch calls to defalias
and redirect them to your own function instead of `fset'.

130 131
* Changes in Emacs 24.4 on non-free operating systems

132 133 134 135 136
+++
** 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
137

138
* Installation Changes in Emacs 24.3
139

Glenn Morris's avatar
Glenn Morris committed
140 141 142 143 144 145 146 147 148
---
** The default toolkit has been changed to Gtk+ version 3.
If you don't pass --with-x-toolkit to configure or if you pass
--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.
You can explicitly require a specific version by passing
--with-x-toolkit=gtk2 or --with-x-toolkit=gtk3 to configure.

---
Paul Eggert's avatar
Paul Eggert committed
149
** New configure option '--without-all' to disable additional features.
150 151
This disables most of the features that are normally enabled by default.

Glenn Morris's avatar
Glenn Morris committed
152
---
153 154 155
** New configure option '--enable-link-time-optimization' to utilize
an appropriate feature provided by GCC since version 4.5.0.

Glenn Morris's avatar
Glenn Morris committed
156
---
157 158 159 160
** New configure option '--enable-gcc-warnings', intended for developers.
If building with GCC, this enables compile-time checks that warn about
possibly-questionable C code.  On a recent GNU system there should be
no warnings; on older and on non-GNU systems the generated warnings
Paul Eggert's avatar
Paul Eggert committed
161
may be useful.
162

Glenn Morris's avatar
Glenn Morris committed
163
---
164
** The configure option '--enable-use-lisp-union-type' has been
Glenn Morris's avatar
Glenn Morris committed
165 166 167 168 169
renamed to '--enable-check-lisp-object-type', as the resulting
Lisp_Object type no longer uses a union to implement the compile time
check that this option enables.

---
170 171 172
** The configure option '--disable-maintainer-mode' has been removed,
as it was confusingly-named and rarely useful.

173 174 175 176 177
---
** You can use `NO_BIN_LINK=t make install' to prevent the installation
overwriting "emacs" in the installation bin/ directory with a link
to emacs-VERSION.

178
---
Glenn Morris's avatar
Glenn Morris committed
179 180 181 182 183
** 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.
184

185 186 187
---
** Emacs uses libtinfo in preference to libncurses, if available.

188 189 190 191 192
---
** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
/usr/pkg/lib to the linker search path.  You must add them yourself if
you want them.

Glenn Morris's avatar
Glenn Morris committed
193 194 195 196 197
---
** The standalone scripts rcs-checkin and vcdiff have been removed
(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
198

199
* Startup Changes in Emacs 24.3
200

201
+++
202 203 204 205
** Emacs no longer searches for `leim-list.el' files beneath the standard
lisp/ directory.  There should not be any there anyway.  If you have
been adding them there, put them somewhere else, eg site-lisp.

Glenn Morris's avatar
Glenn Morris committed
206 207 208
---
** The `--no-site-lisp' command line option now works for Nextstep builds.

Glenn Morris's avatar
Glenn Morris committed
209

210
* Changes in Emacs 24.3
Glenn Morris's avatar
Glenn Morris committed
211

212
+++
Chong Yidong's avatar
Chong Yidong committed
213 214 215 216 217
** 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.

** Mode line changes
Chong Yidong's avatar
Chong Yidong committed
218
---
Chong Yidong's avatar
Chong Yidong committed
219 220 221
*** 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.
222 223 224
+++
*** You can now click mouse-3 in the coding system indicator to invoke
`set-buffer-file-coding-system'.
Chong Yidong's avatar
Chong Yidong committed
225

226 227
** Help changes

228
+++
229 230 231 232 233 234
*** `C-h f' (describe-function) can now perform autoloading.
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.

235
---
236 237 238 239
*** `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).

240 241 242 243
** Minibuffer changes
---
*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
next and previous path separator, respectively.
244
+++
245 246 247
*** minibuffer-electric-default-mode can rewrite (default ...) to [...].
Just set minibuffer-eldef-shorten-default to t before enabling the mode.

Glenn Morris's avatar
Glenn Morris committed
248
+++
249 250 251
** ImageMagick support, if available, is automatically enabled.
It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
252
automatically at startup, or when customizing an imagemagick- option.
253
+++
254
*** Setting `imagemagick-types-inhibit' to t now disables the use of
255 256
ImageMagick to view images.  You must call imagemagick-register-types
afterwards if you do not use customize to change this.
257
+++
258
*** The new variable `imagemagick-enabled-types' also affects which
259 260 261
ImageMagick types are treated as images.  The function
`imagemagick-filter-types' returns the list of types that will be
treated as images.
262
---
263 264
*** Images displayed via ImageMagick now support transparency and the
:background image spec property.
265

Chong Yidong's avatar
Chong Yidong committed
266
** Server and client changes
267
+++
Chong Yidong's avatar
Chong Yidong committed
268 269 270
*** 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.
271
---
Chong Yidong's avatar
Chong Yidong committed
272
*** New option `server-auth-key' specifies a shared server key.
Glenn Morris's avatar
Glenn Morris committed
273

274
+++
Chong Yidong's avatar
Chong Yidong committed
275 276 277
** 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
278
+++
Chong Yidong's avatar
Chong Yidong committed
279 280 281
** `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.

282
+++
Chong Yidong's avatar
Chong Yidong committed
283 284 285
** 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
286
that support backtraces.
287

288
---
Chong Yidong's avatar
Chong Yidong committed
289 290
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about the bzr revision used.
291

292
+++
Chong Yidong's avatar
Chong Yidong committed
293 294 295
** New variable `create-lockfiles' specifies usage of lockfiles.
It defaults to t.  Changing it to nil inhibits the creation of lock
files (use this with caution).
296

297
+++
298
** Using "unibyte: t" in Lisp source files is obsolete.
Glenn Morris's avatar
Glenn Morris committed
299
Use "coding: raw-text" instead.
300

301 302 303 304
+++
** Setting `enable-remote-dir-locals' to non-nil allows directory
local variables on remote hosts.

Chong Yidong's avatar
Chong Yidong committed
305
---
Chong Yidong's avatar
Chong Yidong committed
306 307 308
** The entry for PCL-CVS has been removed from the Tools menu.
The PCL-CVS commands are still available via the keyboard.

Chong Yidong's avatar
Chong Yidong committed
309 310 311 312 313 314
** Internationalization changes
---
*** New language environment: Persian.
---
*** New input method `vietnamese-vni'.

Glenn Morris's avatar
Glenn Morris committed
315
** Nextstep (GNUstep / Mac OS X) port changes
316
---
Jan Djärv's avatar
Jan Djärv committed
317 318
*** Fullscreen and frame parameter fullscreen is supported.
---
319 320 321
*** A file dialog is used for open/save operations initiated from the
menu/toolbar.

Glenn Morris's avatar
Glenn Morris committed
322

323
* Editing Changes in Emacs 24.3
324

325
** Navigation command changes
326
+++
327
*** New binding `M-g c' for `goto-char'.
328
+++
329
*** New binding `M-g TAB' for `move-to-column'.
330
+++
331 332 333
*** `M-g TAB' (`move-to-column') prompts for a column number if called
interactively with no prefix arg.  Previously, it moved to column 1.

Chong Yidong's avatar
Chong Yidong committed
334
** Search and Replace changes
335
+++
Chong Yidong's avatar
Chong Yidong committed
336 337 338 339 340
*** 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
similar existing feature for regexp Isearch).
341
+++
Chong Yidong's avatar
Chong Yidong committed
342 343
*** New Isearch command `M-s SPC' toggles lax space matching.
This applies to both ordinary and regexp Isearch.
344
+++
Chong Yidong's avatar
Chong Yidong committed
345 346 347
*** New option `replace-lax-whitespace'.
If non-nil, `query-replace' uses flexible whitespace matching too.
The default is nil.
348
+++
349 350 351 352
*** 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.

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

---
** 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.

+++
** 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
367 368 369 370 371 372 373
** Register changes
+++
*** `C-x r +' is now overloaded to invoke `append-to-register.
+++
*** New option `register-separator' specifies the register containing
the text to put between collected texts for use with M-x
append-to-register and M-x prepend-to-register.
374

375
+++
Chong Yidong's avatar
Chong Yidong committed
376
** `C-u M-=' now counts lines/words/characters in the entire buffer.
377

378
+++
379 380 381
** New command `C-x r M-w' (copy-rectangle-as-kill).
It copies the region-rectangle as the last rectangle kill.

382
+++
Chong Yidong's avatar
Chong Yidong committed
383 384 385
** New option `yank-handled-properties' allows processing of text
properties on yanked text, in more ways that are more general than
just removing them, as done by `yank-excluded-properties'.
386

Glenn Morris's avatar
Glenn Morris committed
387

388
* Changes in Specialized Modes and Packages in Emacs 24.3
389

Chong Yidong's avatar
Chong Yidong committed
390
** Apropos
391
---
Chong Yidong's avatar
Chong Yidong committed
392 393 394
*** 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.
395 396
---
*** The old options whose values specified faces to use were removed
Chong Yidong's avatar
Chong Yidong committed
397 398 399 400
(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).

** Buffer Menu
This package has been rewritten to use Tabulated List mode.
401
---
Chong Yidong's avatar
Chong Yidong committed
402 403 404 405 406
*** Option `Buffer-menu-buffer+size-width' is now obsolete.
Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.

** Calendar

Glenn Morris's avatar
Glenn Morris committed
407
+++
Chong Yidong's avatar
Chong Yidong committed
408 409 410
*** You can customize the header text that appears above each calendar month.
See the variable `calendar-month-header'.

411 412 413
+++
*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.

Glenn Morris's avatar
Glenn Morris committed
414
+++
Chong Yidong's avatar
Chong Yidong committed
415
*** The calendars produced by cal-html include holidays.
Glenn Morris's avatar
Glenn Morris committed
416
Customize `cal-html-holidays' to change this.
Julien Danjou's avatar
Julien Danjou committed
417

418
** CL
Chong Yidong's avatar
Chong Yidong committed
419

Glenn Morris's avatar
Glenn Morris committed
420
+++
421
*** CL's main entry is now (require 'cl-lib).
422
`cl-lib' is like the old `cl' except that it uses the namespace cleanly,
423 424
i.e. all its definitions have the "cl-" prefix (and internal definitions use
the "cl--" prefix).
425 426 427 428 429 430

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 definitions
that had to use `foo*' to avoid conflicts with pre-existing Elisp entities,
which have not been renamed to `cl-foo*' but just `cl-foo'.

Glenn Morris's avatar
Glenn Morris committed
431 432
The old `cl' is now deprecated and is mainly just a bunch of aliases that
provide the old non-prefixed names.  Some exceptions are listed below.
433

434
+++
435 436
*** `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
437 438
In particular, in cl-flet function definitions are lexically scoped,
whereas in flet the scoping is dynamic.
439

440
+++
441 442 443 444 445
*** `cl-labels' is slightly different from `labels'.
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.

446
+++
Glenn Morris's avatar
Glenn Morris committed
447
*** `cl-letf' is not exactly like `letf'.
448 449
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
450

Glenn Morris's avatar
Glenn Morris committed
451
+++
452 453 454 455
*** `progv' was rewritten to use the `let' machinery.
A side effect is that vars without corresponding value are bound to nil
rather than making them unbound.

456
+++
Glenn Morris's avatar
Glenn Morris committed
457 458 459
*** 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
460 461
`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
462
`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
Glenn Morris's avatar
Glenn Morris committed
463

464
+++
Glenn Morris's avatar
Glenn Morris committed
465
** New compilation option `compilation-always-kill'.
Chong Yidong's avatar
Chong Yidong committed
466 467

** Customize
468
---
Chong Yidong's avatar
Chong Yidong committed
469
*** `custom-reset-button-menu' now defaults to t.
470
---
Chong Yidong's avatar
Chong Yidong committed
471 472 473 474
*** Non-option variables are never matched in `customize-apropos' and
`customize-apropos-options' (i.e. the prefix argument does nothing for
these commands now).

475
---
Glenn Morris's avatar
Glenn Morris committed
476 477
** `desktop-path' no longer includes the "." directory.
Desktop files are now located in ~/.emacs.d by default.
Chong Yidong's avatar
Chong Yidong committed
478

Chong Yidong's avatar
Chong Yidong committed
479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510
** D-Bus

+++
*** New variables `dbus-compiled-version' and `dbus-runtime-version'.

+++
*** The D-Bus object manager interface is implemented.

+++
*** Variables of type :(u)int32 and :(u)int64 accept floating points,
if their value does not fit into Emacs's integer range.

+++
*** The function `dbus-call-method' works non-blocking now, it can be
interrupted by C-g.  `dbus-call-method-non-blocking' is obsolete.

+++
*** Signals can be sent also as unicast message.

+++
*** The argument list of `dbus-register-signal' has been extended,
according to the new match rule types of D-Bus.  See the manual for
details.

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

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

** Diff mode

511
---
Chong Yidong's avatar
Chong Yidong committed
512 513
*** Changes are now highlighted using the same color scheme as in
modern VCSes.  Deletions are displayed in red (new faces
514
`diff-refine-removed' and `smerge-refined-removed', and new definition
Chong Yidong's avatar
Chong Yidong committed
515
of `diff-removed'), insertions in green (new faces `diff-refine-added'
516
and `smerge-refined-added', and new definition of `diff-added').
Chong Yidong's avatar
Chong Yidong committed
517

518
---
Chong Yidong's avatar
Chong Yidong committed
519 520 521 522
*** 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.

523
+++
524
*** The new command `diff-delete-trailing-whitespace' removes trailing
525
whitespace introduced by a diff.
Chong Yidong's avatar
Chong Yidong committed
526 527

** Dired
528
+++
Chong Yidong's avatar
Chong Yidong committed
529 530 531
*** `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.
532
---
Chong Yidong's avatar
Chong Yidong committed
533 534 535
*** Typing M-n in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
`dired-do-chown', `dired-do-touch' pulls the file attributes of the
file at point.
536
+++
Chong Yidong's avatar
Chong Yidong committed
537 538 539
*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
`DEL' (`dired-unmark-backward'), `d' (`dired-flag-file-deletion')
mark/unmark/flag all files in the active region.
540
+++
Chong Yidong's avatar
Chong Yidong committed
541 542 543
*** 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.
544
+++
Chong Yidong's avatar
Chong Yidong committed
545 546 547
*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
The global binding for `M-=', `count-words-region' is in effect.

548
---
Chong Yidong's avatar
Chong Yidong committed
549 550
** Ediff now uses the same color scheme as Diff mode.

Glenn Morris's avatar
Glenn Morris committed
551 552
** ERC

553 554 555
+++
*** 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
556

557
+++
Glenn Morris's avatar
Glenn Morris committed
558 559
*** ERC will look up server/channel names via auth-source and use any
channel keys found.
Chong Yidong's avatar
Chong Yidong committed
560

Glenn Morris's avatar
Glenn Morris committed
561 562 563
+++
*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
only applies to messages sent by lurkers.
564

Glenn Morris's avatar
Glenn Morris committed
565
+++
Chong Yidong's avatar
Chong Yidong committed
566
** Flymake uses fringe bitmaps to indicate errors and warnings.
567 568
See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
`flymake-warning-bitmap'.
Chong Yidong's avatar
Chong Yidong committed
569

570
---
Glenn Morris's avatar
Glenn Morris committed
571
** Follow mode no longer works by using advice.
Chong Yidong's avatar
Chong Yidong committed
572 573
The option `follow-intercept-processes' has been removed.

Glenn Morris's avatar
Glenn Morris committed
574
---
Glenn Morris's avatar
Glenn Morris committed
575
** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
Glenn Morris's avatar
Glenn Morris committed
576
specifying URL types that should be converted to remote file names at
Chong Yidong's avatar
Chong Yidong committed
577 578
the FFAP prompt.  The default is now '("ftp").

579
---
Glenn Morris's avatar
Glenn Morris committed
580
** New Ibuffer `derived-mode' filter, bound to `/ M'.
Chong Yidong's avatar
Chong Yidong committed
581 582
The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.

Chong Yidong's avatar
Chong Yidong committed
583
---
Glenn Morris's avatar
Glenn Morris committed
584
** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
Chong Yidong's avatar
Chong Yidong committed
585

586
+++
Glenn Morris's avatar
Glenn Morris committed
587
** New option `mouse-avoidance-banish-position' specifies where the
588
`banish' mouse avoidance setting moves the mouse.
Chong Yidong's avatar
Chong Yidong committed
589 590 591 592 593 594

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

Glenn Morris's avatar
Glenn Morris committed
595
---
Chong Yidong's avatar
Chong Yidong committed
596 597 598
** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
closing brackets to be aligned with the line of the opening bracket.

Glenn Morris's avatar
Glenn Morris committed
599
---
600
** In Proced mode, new command `proced-renice' renices marked processes.
601

Glenn Morris's avatar
Glenn Morris committed
602
---
Glenn Morris's avatar
Glenn Morris committed
603 604 605
** Python mode

A new version of python.el, which provides several new features, including:
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648
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:
Old defcustom:                | New defcustom:
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:

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

**** `python-honour-comment-indentation':
Comments are never considered as indentation markers themselves.

**** `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 command               | New command
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
649 650
python-beginning-of-defun-function  | python-nav-beginning-of-defun
python-end-of-defun-function        | python-nav-end-of-defun
651 652 653 654 655 656 657 658 659
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
660
---
661 662
** reStructuredText mode

Glenn Morris's avatar
Glenn Morris committed
663 664 665
*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
fontification, comment handling, and customization have all been revised
and improved.
666

Glenn Morris's avatar
Glenn Morris committed
667
*** Support for `imenu' and `which-function-mode'.
668

Glenn Morris's avatar
Glenn Morris committed
669 670
*** The reStructuredText syntax is more closely covered.
Sphinx support has been improved.
671

672
*** `rst-insert-list' inserts new list or continues existing lists.
673

Glenn Morris's avatar
Glenn Morris committed
674
*** A negative prefix argument always works for `rst-adjust'.
675

Glenn Morris's avatar
Glenn Morris committed
676
*** The window configuration is reset after displaying a TOC.
677

Glenn Morris's avatar
Glenn Morris committed
678
*** The constant `rst-version' describes the rst.el package version.
679

Chong Yidong's avatar
Chong Yidong committed
680
---
Glenn Morris's avatar
Glenn Morris committed
681
** Shell Script mode
682

Chong Yidong's avatar
Chong Yidong committed
683
*** Pairing of parens/quotes uses electric-pair-mode instead of skeleton-pair.
684

Chong Yidong's avatar
Chong Yidong committed
685
*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
Chong Yidong's avatar
Chong Yidong committed
686

Chong Yidong's avatar
Chong Yidong committed
687
*** `sh-use-smie' lets you choose a new indentation and navigation code.
Chong Yidong's avatar
Chong Yidong committed
688

689
+++
Glenn Morris's avatar
Glenn Morris committed
690
** New option `async-shell-command-buffer' specifies the buffer to use
691
for a new asynchronous `shell-command' when the default output buffer
Glenn Morris's avatar
Glenn Morris committed
692
`*Async Shell Command*' is already in use.
693

Chong Yidong's avatar
Chong Yidong committed
694
---
Glenn Morris's avatar
Glenn Morris committed
695
** SQL mode has a new option `sql-db2-escape-newlines'.
Chong Yidong's avatar
Chong Yidong committed
696 697 698
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.
699

Chong Yidong's avatar
Chong Yidong committed
700
** Tabulated List and packages derived from it
701
+++
Chong Yidong's avatar
Chong Yidong committed
702 703
*** New command `tabulated-list-sort', bound to `S', sorts the column
at point, or the Nth column if a numeric prefix argument is given.
704

Chong Yidong's avatar
Chong Yidong committed
705
** Term
706
+++
Glenn Morris's avatar
Glenn Morris committed
707
*** The variables `term-default-fg-color' and `term-default-bg-color' are
708
now deprecated in favor of the customizable face `term'.
Glenn Morris's avatar
Glenn Morris committed
709
+++
Glenn Morris's avatar
Glenn Morris committed
710 711 712
*** 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.
713

Michael Albinus's avatar
Michael Albinus committed
714 715
** Tramp
+++
Glenn Morris's avatar
Glenn Morris committed
716 717
*** The syntax has been extended in order to allow ad-hoc proxy definitions.
See the manual for details.
Michael Albinus's avatar
Michael Albinus committed
718 719 720
+++
*** Remote processes are now supported also on remote Windows host.

721
** URL
Chong Yidong's avatar
Chong Yidong committed
722
+++
723 724 725 726 727
*** 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.
So now the `filename' slot stores the entire path and query components
and the `attributes' slot is always nil.
728
+++
729 730 731 732
*** 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.

733
---
Chong Yidong's avatar
Chong Yidong committed
734 735 736 737 738 739 740 741 742 743
** VHDL mode

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

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

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

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

744
+++
Glenn Morris's avatar
Glenn Morris committed
745
** `which-func-modes' now defaults to t, so Which Function mode, when
746
enabled, applies to all applicable major modes.
Chong Yidong's avatar
Chong Yidong committed
747

748 749 750
---
** winner-mode-hook now runs when the mode is disabled, as well as when it is
enabled.
Chong Yidong's avatar
Chong Yidong committed
751

752
+++
Stefan Monnier's avatar
Stefan Monnier committed
753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
** 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
776

Glenn Morris's avatar
Glenn Morris committed
777
** Obsolete packages:
778
+++
779 780 781 782
*** 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.
783
---
784
*** bruce.el
Glenn Morris's avatar
Glenn Morris committed
785 786
+++
*** cust-print.el
787
---
Glenn Morris's avatar
Glenn Morris committed
788
*** ledit.el
789
---
Glenn Morris's avatar
Glenn Morris committed
790
*** mailpost.el
791
+++
792
*** mouse-sel.el
793
---
794
*** patcomp.el
795

Glenn Morris's avatar
Glenn Morris committed
796

797
* Incompatible Lisp Changes in Emacs 24.3
798

799
+++
800 801
** set-buffer-multibyte now signals an error in narrowed buffers.

802
+++
803 804 805 806 807
** (random) by default now returns a different random sequence in
every Emacs run.  Use (random S), where S is a string, to set the
random seed to a value based on S, in order to get a repeatable
sequence in later calls.

808
---
809 810 811 812
** 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.

813
+++
814 815 816 817
** 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.

818 819 820 821 822 823
+++
** 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'.

824 825
+++
** The return values of `defalias', `defun' and `defmacro' have changed,
826 827 828
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.
829

830
---
831 832 833
** `face-spec-set' no longer sets frame-specific attributes when the
third argument is a frame (that usage was obsolete since Emacs 22.2).

834 835 836 837 838
+++
** 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.

839 840 841 842 843 844 845
+++
** 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.

846 847 848 849
** Spelling changes.
Some Lisp symbols have been renamed to avoid problems with spelling
that is incorrect or inconsistent with how Emacs normally spells a word.

850
---
851 852 853 854 855 856 857 858 859 860 861
*** 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

862
---
863 864 865 866 867 868 869
*** 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

870
---
871 872 873 874 875
*** Renamed Lisp variables
**** follow-deactive-menu -> follow-inactive-menu
**** inactivate-current-input-method-function ->
     deactivate-current-input-method-function

876
+++
Glenn Morris's avatar
Glenn Morris committed
877 878
** Some obsolete functions, variables, and faces have been removed:
*** `last-input-char', `last-command-char', `unread-command-char'
879 880
*** `facemenu-unlisted-faces'
*** `rmail-decode-mime-charset'
881 882 883
*** `iswitchb-read-buffer'
*** `sc-version', `sc-submit-bug-report'
*** `set-char-table-default'
Glenn Morris's avatar
Glenn Morris committed
884
*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
885
*** `compile-internal'
Glenn Morris's avatar
Glenn Morris committed
886
*** `modeline'
887
*** `mode-line-inverse-video'
Glenn Morris's avatar
Glenn Morris committed
888
*** `follow-mode-off-hook'
889
*** `cvs-commit-buffer-require-final-newline'
Glenn Morris's avatar
Glenn Morris committed
890
(use `log-edit-require-final-newline' instead)
891 892 893 894 895 896
*** `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'
897

Glenn Morris's avatar
Glenn Morris committed
898

899
* Lisp changes in Emacs 24.3
900

Stefan Monnier's avatar
Stefan Monnier committed
901
** New sampling-based Elisp profiler.
Glenn Morris's avatar
Glenn Morris committed
902 903
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
Glenn Morris's avatar
Glenn Morris committed
904
CPU time or memory allocations.
905

906
+++
907
** CL-style generalized variables are now in core Elisp.
Chong Yidong's avatar
Chong Yidong committed
908
`setf' is autoloaded; `push' and `pop' accept generalized variables.
909 910
You can define your own generalized variables using `gv-define-simple-setter',
`gv-define-setter', etc.
911

912
+++
913 914 915
** `defun' also accepts a (declare DECLS) form, like `defmacro'.
The interpretation of the DECLS is determined by `defun-declarations-alist'.

916 917 918 919 920 921 922 923
** Minibuffer
+++
*** `read-regexp' has a new argument HISTORY; the first argument PROMPT
of `read-regexp' accepts a string ending with a colon and space, and its
second argument DEFAULTS can be a list of strings accessible via M-n
in the minibuffer ahead of other hard-coded useful regexp-related values.
More commands use `read-regexp' now to read their regexp arguments.

Chong Yidong's avatar
Chong Yidong committed
924
** Completion
925

Chong Yidong's avatar
Chong Yidong committed
926 927
*** New function `completion-table-with-quoting' to handle completion
in the presence of quoting, such as file completion in shell buffers.
928

929
+++
Chong Yidong's avatar
Chong Yidong committed
930 931 932 933
*** New function `completion-table-subvert' to use an existing completion
table, but with a different prefix.

** Debugger changes
934

935
+++
Chong Yidong's avatar
Chong Yidong committed
936 937
*** New error type and new function `user-error'.
These do not trigger the debugger.
938

Glenn Morris's avatar
Glenn Morris committed
939 940 941
+++
*** New option `debugger-bury-or-kill', saying what to do with the
debugger buffer when exiting debug.
942

943
+++
944 945 946
*** Set `debug-on-message' to enter the debugger when a certain
message is displayed in the echo area.  This can be useful when trying