NEWS 142 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

3
Copyright (C) 2010-2014 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
Temporary note:
18 19 20 21
+++ indicates that all necessary updates to the manuals in doc/ are complete.
--- means no change in the manuals is needed.
When you add a new item, use the appropriate mark if you know it applies,
otherwise leave it unmarked.
Glenn Morris's avatar
Glenn Morris committed
22

23 24

* Installation Changes in Emacs 24.4
25

Chong Yidong's avatar
Chong Yidong committed
26
** Emacs can now be compiled with ACL support.
27 28
This happens by default if a suitable support library is found at
build time, like libacl on GNU/Linux.  To prevent this, use the
29
configure option `--disable-acl'.
30

Chong Yidong's avatar
Chong Yidong committed
31
** Emacs can now be compiled with file notification support.
32 33 34 35
This happens by default if a suitable system library is found at
build time.  To prevent this, use the configure option
`--with-file-notification-no'.  See below for file-notify features.
FIXME?  This feature is not available for the Nextstep port. (?)
36

Glenn Morris's avatar
Glenn Morris committed
37
---
Chong Yidong's avatar
Chong Yidong committed
38 39
** The configure option `--without-compress-info' has been generalized,
and renamed to `--without-compress-install'.  It now prevents compression
40 41
of _any_ files during installation.

Glenn Morris's avatar
Glenn Morris committed
42
---
Chong Yidong's avatar
Chong Yidong committed
43
** The configure option `--with-crt-dir' has been removed.
44 45 46
It is no longer needed, as the crt*.o files are no longer linked
specially.

Glenn Morris's avatar
Glenn Morris committed
47
---
48 49 50
** Directories passed to configure option `--enable-locallisppath' are
no longer created during installation.

Chong Yidong's avatar
Chong Yidong committed
51 52 53 54
** Emacs can be compiled with zlib support.
If this library is present (which it normally is on most systems), the
function `zlib-decompress-region' becomes available, which can
decompress gzip- and zlib-format compressed data.
55

56 57 58 59
---
** Emacs for NS (OSX, GNUStep) can be built with ImageMagick support.
pkg-config is required to find ImageMagick libraries.

60 61 62 63 64
** For OSX >= 10.5, the Core text based font backend from the Mac port is used.
For GNUStep and OSX 10.4 the old backend is used.
To use the old backend by default, do on the command line:
% defaults write org.gnu.Emacs FontBackend ns

65 66 67 68
** If your Emacs was built from a repository checkout, the new variable
`emacs-repository-version' contains information about the bzr revision used.
In 24.3 this variable was `emacs-bzr-version`.

Glenn Morris's avatar
Glenn Morris committed
69

70
* Startup Changes in Emacs 24.4
Glenn Morris's avatar
Glenn Morris committed
71

72 73 74 75 76 77 78 79 80 81
+++
** When initializing `load-path', an empty element in the EMACSLOADPATH
environment variable (either leading, e.g., ":/foo"; trailing, e.g.,
"/foo:"; or embedded, e.g., "/foo::/bar") is replaced with the default
load-path (the one that would have been used if EMACSLOADPATH was unset).
This makes it easier to _extend_ the load-path via EMACSLOADPATH
(previously, EMACSLOADPATH had to specify the complete load-path,
including the defaults).  (In older versions of Emacs, an empty element
was replaced by ".", so use an explicit "." now if that is what you want.)

82 83
+++
** The -L option, which normally prepends its argument to load-path,
84 85
will instead append, if the argument begins with `:' (or `;' on MS Windows;
i.e., `path-separator').
86

87 88 89 90 91 92
+++
** If you use either site-load.el or site-init.el to customize the dumped
Emacs executable, any changes to `load-path' that these files make
will no longer be present after dumping.  To affect a permanent change
to `load-path', use the `--enable-locallisppath' option of `configure'.

Chong Yidong's avatar
Chong Yidong committed
93 94 95 96
+++
** The user option `initial-buffer-choice' can now specify a function
to set up the initial buffer.

Glenn Morris's avatar
Glenn Morris committed
97

98
* Changes in Emacs 24.4
99

100 101 102 103 104 105
+++
** New option `gnutls-verify-error', if non-nil, means that Emacs
should reject SSL/TLS certificates that GnuTLS determines as invalid.
(This option defaults to nil at present, but this is expected to change
in a future release.)

Eli Zaretskii's avatar
Eli Zaretskii committed
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
+++
** Emacs now supports menus on text-mode terminals.
If the terminal supports a mouse, clicking on the menu bar, or on
sensitive portions of the mode line or header line, will drop down the
menu defined at that position.  Likewise, clicking C-mouse-2 or
C-mouse-2 or C-mouse-3 on the text area will pop up the menus defined
for those locations.

If the text terminal does not support a mouse, you can activate the
first menu-bar menu by typing F10, which invokes `menu-bar-open'.

If you want the previous behavior, whereby F10 invoked `tmm-menubar',
customize the option `tty-menu-open-use-tmm' to a non-nil value.
(Typing M-` will always invoke `tmm-menubar', even if
`tty-menu-open-use-tmm' is nil.)

122
+++
Chong Yidong's avatar
Chong Yidong committed
123 124 125 126
** The *Messages* buffer is created in `messages-buffer-mode',
a new major mode, with read-only status.  Any code that might create
the *Messages* buffer should call the function `messages-buffer' to do
so and set up the mode.
127

Chong Yidong's avatar
Chong Yidong committed
128
** Emacs now supports ACLs (access control lists).
129 130 131 132
+++
*** Emacs preserves the ACL entries of files when backing up.
+++
*** New functions `file-acl' and `set-file-acl' get and set the ACL
133 134 135
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.
136

137 138 139 140 141 142
** Multi-monitor support has been added.

*** New functions `display-monitor-attributes-list' and
`frame-monitor-attributes' can be used to obtain information about
each physical monitor on multi-monitor setups.

143 144 145 146 147 148 149 150
*** The functions `display-pixel-width' and `display-pixel-height' now
behave consistently among the platforms: they return the pixel width
or height for all physical monitors associated with the given display
as just they were on X11.  To get information for each physical
monitor, use the new functions above.  Similar notes also apply to
`x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
`display-mm-height', `x-display-mm-width', and `x-display-mm-height'.

Chong Yidong's avatar
Chong Yidong committed
151 152 153
+++
** The cursor stops blinking after 10 blinks (by default) on X and NS.
You can change the default by customizing `blink-cursor-blinks'.
154

Chong Yidong's avatar
Chong Yidong committed
155 156 157 158 159
+++
** In keymaps where SPC scrolls forward, S-SPC now scrolls backward.
This affects View mode, etc.

** Help changes
Glenn Morris's avatar
Glenn Morris committed
160

Tassilo Horn's avatar
Tassilo Horn committed
161
+++
Chong Yidong's avatar
Chong Yidong committed
162 163 164 165 166
*** The command `apropos-variable' is renamed to `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.
167

Chong Yidong's avatar
Chong Yidong committed
168 169
+++
*** The key `?' now describes prefix bindings, like `C-h'.
170

171 172
*** The command `describe-function' was extended for EIEIO.
Running it on constructors will show a full description of the
David Engster's avatar
David Engster committed
173
generated class.  For generic functions, it will show all
174 175 176 177
implementations together with links to the source.  The old commands
`describe-class', `describe-constructor' and `describe-generic' were
removed.

Chong Yidong's avatar
Chong Yidong committed
178
*** The command `quail-help' is deleted.  Use `C-h C-\'
179 180
(`describe-input-method') instead.

181 182
** ImageMagick

183
+++
184 185 186 187 188 189 190
*** ImageMagick images now support the :max-width and :max-height
keywords.

*** Some data types aren't auto-detected by ImageMagick.  Adding
:format to `create-image' may help if the content type is in the
new variable `image-format-suffixes'.

Chong Yidong's avatar
Chong Yidong committed
191
** Frame and window changes
192

Chong Yidong's avatar
Chong Yidong committed
193 194 195
+++
*** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
196

Chong Yidong's avatar
Chong Yidong committed
197 198 199 200
*** New command `frameset-to-register' is now bound to `C-x r f', replacing
`frame-configuration-to-register'.  It offers similar functionality,
plus enhancements like the ability to restore deleted frames.  The
command `frame-configuration-to-register' still exists, but is unbound.
201

202
+++
Chong Yidong's avatar
Chong Yidong committed
203 204 205 206 207 208 209 210
*** New hooks `focus-in-hook', `focus-out-hook'.
These are normal hooks run when an Emacs frame gains or loses input focus.

---
*** `split-window' is now a non-interactive function, not a command.
As a command, it was a special case of `C-x 2' (`split-window-below'),
and as such superfluous.  After being reimplemented in Lisp, its
interactive form was mistakenly retained.
211

212
+++
Chong Yidong's avatar
Chong Yidong committed
213 214 215 216 217 218
*** New option `scroll-bar-adjust-thumb-portion'.
Available only on X, this option allows to control over-scrolling
using the scroll bar (i.e. dragging the thumb down even when the end
of the buffer is visible).

** Lisp evaluation changes
219
+++
Chong Yidong's avatar
Chong Yidong committed
220 221 222 223 224 225 226 227 228 229 230
*** `eval-defun' on an already defined defcustom calls the :set function,
if there is one.

*** A zero prefix arg of `eval-last-sexp' (`C-x C-e'),
`eval-expression' (`M-:') and `eval-print-last-sexp' (`C-j') inserts
a list with no limit on its length and level (by using nil values of
`print-length' and `print-level'), and inserts additional formats for
integers (octal, hexadecimal, and character).

---
** `write-region-inhibit-fsync' now defaults to t in batch mode.
231

232
+++
Chong Yidong's avatar
Chong Yidong committed
233 234
** `cache-long-line-scans' has been renamed to `cache-long-scans'
because it affects caching of paragraph scanning results as well.
235

Chong Yidong's avatar
Chong Yidong committed
236 237 238 239 240 241 242 243
---
** 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.

** The default value of `comment-use-global-state' is changed to t,
and this variable has been marked obsolete.

Chong Yidong's avatar
Chong Yidong committed
244 245 246 247 248 249 250 251
** New user options:

*** `read-regexp-defaults-function' defines a function to read regexps,
used by commands like `rgrep', `lgrep' `occur', `highlight-regexp',
etc.  You can customize this to specify a function that provides a
default value from the regexp last history element, or from the symbol
found at point.

252
+++
Chong Yidong's avatar
Chong Yidong committed
253 254 255 256 257 258
*** `load-prefer-newer', affects how the `load' function chooses the
file to load.  If this is non-nil, then when both .el and .elc
versions of a file exist, and the caller did not explicitly specify
which one to load, then the newer file is loaded.  The default, nil,
means to always load the .elc file.

Chong Yidong's avatar
Chong Yidong committed
259 260 261 262 263 264 265 266 267 268 269

* Editing Changes in Emacs 24.4

** Indentation changes

+++
*** The behavior of `C-x TAB' (`indent-rigidly') has changed.
When invoked without a prefix argument, it now activates a transient
mode in which typing <left>, <right>, <S-left>, and <S-right> adjusts
the text indentation in the region.  Typing any other key resumes
normal editing behavior.
270

Chong Yidong's avatar
Chong Yidong committed
271
*** `electric-indent-mode' is enabled by default.
272

Chong Yidong's avatar
Chong Yidong committed
273
*** `tab-stop-list' is now implicitly extended to infinity by repeating
Xue Fuqiao's avatar
Xue Fuqiao committed
274 275
the last step.  Its default value is changed to nil which means a tab
stop every `tab-width' columns.
276

Chong Yidong's avatar
Chong Yidong committed
277
** Filling changes
278

Chong Yidong's avatar
Chong Yidong committed
279 280 281 282 283 284 285 286 287 288
*** New command `cycle-spacing' cycles between spacing conventions:
having just one space, no spaces, or reverting to the original
spacing.  Like `just-one-space', it can handle or ignore newlines and
leave different number of spaces.

*** `fill-single-char-nobreak-p' prevents fill from breaking a line after
a 1-letter word, which is an error according to Polish and
Czech typography rules.  To globally enable this feature, evaluate:

  (add-hook 'fill-nobreak-predicate 'fill-single-char-nobreak-p)
289

290
+++
Chong Yidong's avatar
Chong Yidong committed
291 292 293 294
** Uniquify is enabled by default with `post-forward-angle-brackets' style.

** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
Most commands are still unaware of it, but kill/yank do work on the rectangle.
295

296 297 298 299 300 301 302
+++
** New option `visual-order-cursor-movement'.
If this is non-nil, cursor motion with arrow keys will follow the
visual order of characters on the screen: <left> always moves to the
left, <right> always moves to the right, disregarding the surrounding
bidirectional context.

Chong Yidong's avatar
Chong Yidong committed
303
** Register changes
304

Chong Yidong's avatar
Chong Yidong committed
305
*** All register commands can now show help with preview.
306

307 308 309
+++
*** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
macros in registers.
310

Chong Yidong's avatar
Chong Yidong committed
311 312 313 314 315 316 317 318 319
*** New command `C-x r f' (`frameset-to-register').
See Changes in Emacs 24.4, above.

** New command `delete-duplicate-lines'.
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.  When its arg KEEP-BLANKS is non-nil (when called
interactively with C-u C-u C-u), duplicate blank lines are preserved.
320

321

322
* Changes in Specialized Modes and Packages in Emacs 24.4
323

Johan Bockgård's avatar
Johan Bockgård committed
324
** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
Stefan Monnier's avatar
Stefan Monnier committed
325 326 327 328 329 330 331 332 333 334 335 336 337 338 339
Affected files:
~/.emacs.d/timelog	replaces  ~/.timelog
~/.emacs.d/vip		replaces  ~/.vip
~/.emacs.d/viper	replaces  ~/.viper
~/.emacs.d/ido.last	replaces  ~/.ido.last
~/.emacs.d/kkcrc	replaces  ~/.kkcrc
~/.emacs.d/quickurls	replaces  ~/.quickurls
~/.emacs.d/idlwave	replaces  ~/.idlwave
~/.emacs.d/bdfcache.el	replaces  ~/.bdfcache.el
~/.emacs.d/places	replaces  ~/.emacs-places
~/.emacs.d/shadows	replaces  ~/.shadows
~/.emacs.d/shadow_todo	replaces  ~/.shadow_todo
~/.emacs.d/strokes	replaces  ~/.strokes
~/.emacs.d/notes	replaces  ~/.notes
~/.emacs.d/type-break	replaces  ~/.type-break
340 341 342 343 344
Also the following files used by the now obsolete otodo-mode.el:
~/.emacs.d/todo-do	replaces  ~/.todo-do
~/.emacs.d/todo-done	replaces  ~/.todo-done
~/.emacs.d/todo-top	replaces  ~/.todo-top

Chong Yidong's avatar
Chong Yidong committed
345
** Backtrace and debugger
346

Chong Yidong's avatar
Chong Yidong committed
347 348 349
*** The Lisp debugger's `e' command now includes the lexical environment
when evaluating the code in the context at point.  Hence, it now lets
you access lexical variables.
350

351 352
+++
*** New command `v' (`debugger-toggle-locals') displays local vars.
353

Chong Yidong's avatar
Chong Yidong committed
354 355
*** New minor mode `jit-lock-debug-mode' lets you use the debuggers on
code run via JIT Lock.
356

357 358
** Battery

Xue Fuqiao's avatar
Xue Fuqiao committed
359
---
360 361
*** Battery information via the BSD `apm' utility is now supported.

362 363 364 365
** Buffer Menu

*** `M-s a C-o' shows lines matching a regexp in marked buffers using Occur.

366 367
** Calendar and Diary

368
---
Chong Yidong's avatar
Chong Yidong committed
369 370
*** New faces `calendar-weekday-header', `calendar-weekend-header',
and `calendar-month-header'.
371

372
+++
373 374
*** New option `calendar-day-header-array'.

375
+++
Glenn Morris's avatar
Glenn Morris committed
376
*** New variable `diary-from-outlook-function', used by the command
377 378
`diary-from-outlook'.

379
---
Chong Yidong's avatar
Chong Yidong committed
380
*** The variable `calendar-font-lock-keywords' is obsolete.
381

382 383 384 385 386 387 388 389 390 391 392 393 394 395
** 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.

396 397
*** Support for ISO 8601 dates.

Chong Yidong's avatar
Chong Yidong committed
398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426
** CEDET

*** EDE

**** The cpp-root project now supports executing a compile command.
It can be set through the new :compile-command slot or the
buffer-local variable `compile-command'.

**** Better selection of include directories for the 'linux' project.
Include directories now support out-of-tree build directories and
target architecture auto-detection.

*** Semantic

**** Improved detection of used namespaces in current scope in C++.

**** Parsing of default values for variables and function arguments in C/C++.
They are also displayed by the summarize feature in the modeline.

**** Improved parsing of function pointers in C/C++.
This also includes parsing of function pointers as function arguments.

**** Parsing of C/C++ preprocessor macros which open new scope.
For example, this enables parsing of macros which open new namespaces.

**** Support for 'this' pointer in inline member functions in C++.

** cl-lib

427
*** New macro `cl-tagbody'.
Chong Yidong's avatar
Chong Yidong committed
428 429 430 431 432 433

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

** CUA mode

Chong Yidong's avatar
Chong Yidong committed
434 435 436 437 438 439
*** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
Hence, you can now enable it independently from `transient-mark-mode',
`delete-selection-mode', and `shift-select-mode'.

*** `cua-highlight-region-shift-only' is now obsolete.
You can disable `transient-mark-mode' to get the same result.
Chong Yidong's avatar
Chong Yidong committed
440 441 442

*** CUA's rectangles can now be used via `cua-rectangle-mark-mode'.

443 444 445 446 447 448 449 450
** CFEngine mode

*** Support for completion, ElDoc, and Flycheck has been added.

*** The current CFEngine syntax is parsed from "cf-promises -s json".
There is a fallback syntax available if you don't have cf-promises or
if it doesn't support that option.

Chong Yidong's avatar
Chong Yidong committed
451 452
** Delete Selection mode can now be used without `transient-mark-mode'.

453 454
** Desktop

455 456
*** `desktop-auto-save-timeout' defines the number of seconds idle time
before auto-save of the desktop.
457

458
*** `desktop-restore-frames', enabled by default, allows saving and
459
restoring the frame/window configuration (frameset).  Additional options
460
`desktop-restore-in-current-display', `desktop-restore-reuses-frames'
461
and `desktop-restore-forces-onscreen' offer further customization.
462

463 464 465 466
** Dired

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

Chong Yidong's avatar
Chong Yidong committed
467
** Eldoc Mode works properly in the minibuffer.
468

469 470 471 472 473 474 475
** Electric Pair mode
*** New `electric-pair-preserve-balance' enabled by default.

Pairing/skipping only kicks in when that help the balance of
parentheses and quotes, i.e. the buffer should end up at least as
balanced as before.

Paul Eggert's avatar
Paul Eggert committed
476
You can further control this behavior by adjusting the predicates
477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501
stored in `electric-pair-inhibit-predicate' and
`electric-pair-skip-self'.

*** New `electric-pair-delete-adjacent-pairs' enabled by default.

In `electric-pair-mode', the commands `backward-delete-char' and
`backward-delete-char-untabify' are now bound to electric variants
that delete the closer when invoked between adjacent pairs.

*** New `electric-pair-open-newline-between-pairs' enabled by default.

In `electric-pair-mode', inserting a newline between adjacent pairs
opens an extra newline after point, which is indented if
`electric-indent-mode' is also set.

*** New `electric-pair-skip-whitespace' enabled by default.

Controls if skipping over closing delimiters should jump over any
whitespace slack. Setting it to `chomp' makes it delete this
whitespace. See also the variable
`electric-pair-skip-whitespace-chars'.

*** New variables control the pairing in strings and comments.

You can customize `electric-pair-text-pairs' and
Paul Eggert's avatar
Paul Eggert committed
502
`electric-pair-text-syntax-table' to tweak pairing behavior inside
503 504
strings and comments.

505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
** EPA

*** New option `epa-mail-aliases'.

You can set this to a list of alias expansions for keys to use
in `epa-mail-encrypt'.

If one element of the variable's value is ("foo@bar.com" "foo@hello.org"),
that means: when one of the recipients of the message being encrypted
is `foo@bar.com', encrypt the message for `foo@hello.org' instead.

If one element of the variable's value is ("foo@bar.com"),
that means: when one of the recipients of the message being encrypted
is `foo@bar.com', ignore that name as regards encryption.
This is useful to avoid a query when you have no key for that name.

Chong Yidong's avatar
Chong Yidong committed
521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558
** 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.

+++
** ERT

*** New macro `skip-unless' allows skipping ERT tests.
See the ERT manual for details.

** Eshell

+++
*** `eshell' now supports visual subcommands and options
Eshell has been able to handle "visual" commands (interactive,
non-line oriented commands such as top that require display
capabilities not provided by eshell) by running them in an Emacs
terminal emulator.  See `eshell-visual-commands'.

This feature has been extended to subcommands and options that make a
usually line-oriented command a visual command.  Typical examples are
"git log" and "git <command> --help" which display their output in a
pager by default.  See `eshell-visual-subcommands' and
`eshell-visual-options'.

---
*** Added Eshell-Tramp module
External su and sudo commands are now the default; the internal,
Tramp-using variants can still be used by enabling the eshell-tramp
module.

** F90 mode
---
*** New option `f90-smart-end-names'.

** Icomplete is a bit more like Ido.
559

Chong Yidong's avatar
Chong Yidong committed
560
*** key bindings to navigate through and select the completions.
561

Chong Yidong's avatar
Chong Yidong committed
562
*** The icomplete-separator is customizable, and its default has changed.
563

Chong Yidong's avatar
Chong Yidong committed
564
*** Removed icomplete-show-key-bindings.
565

Chong Yidong's avatar
Chong Yidong committed
566 567 568 569 570
*** Icomplete-mode by defaults applies to all forms of minibuffer completion.
(setq icomplete-with-completion-tables '(internal-complete-buffer))
will revert to the old behavior.

** Ido
571

Chong Yidong's avatar
Chong Yidong committed
572
*** Ido has a manual now.
573

Chong Yidong's avatar
Chong Yidong committed
574
*** `ido-use-virtual-buffers' takes a new value 'auto.
575

Chong Yidong's avatar
Chong Yidong committed
576 577 578 579
*** `ido-decorations' has been slightly extended to give a bit more control.

** Image mode

580
+++
Chong Yidong's avatar
Chong Yidong committed
581 582 583 584
*** New commands `n' (`image-next-file') and `p' (`image-previous-file')
visit the next image file and the previous image file in the same
directory, respectively.

585
+++
Chong Yidong's avatar
Chong Yidong committed
586 587 588 589
*** New commands to show specific frames of multi-frame images.
`f' (`image-next-frame') and `b' (`image-previous-frame') visit the
next or previous frame.  `F' (`image-goto-frame') shows a specific frame.

590
+++
Chong Yidong's avatar
Chong Yidong committed
591
*** New commands to speed up, slow down, or reverse animation.
592 593 594 595
`a +' (`image-increase-speed') and `a -' (`image-decrease-speed') to
speed up and slow down the animation.  `a r' (`image-reverse-speed')
to reverse it and `a 0' (`image-reset-speed') to reset it.

Chong Yidong's avatar
Chong Yidong committed
596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616
---
*** 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.

** Hi-Lock

*** New option `hi-lock-auto-select-face'.  When non-nil, hi-lock commands
will cycle through faces in `hi-lock-face-defaults' without prompting.

+++
*** New global command `M-s h .' (`highlight-symbol-at-point')
highlights the symbol found near point without prompting,
using the next face automatically.

** Imenu

*** New option `imenu-generic-skip-comments-and-strings'.

** Info
617
---
Chong Yidong's avatar
Chong Yidong committed
618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660
*** New face `info-index-match' is used to highlight matches in index
entries displayed by `Info-index-next', `Info-virtual-index' and
`info-apropos'.

** JS Mode

*** Better indentation of multiple-variable declarations.
If declaration spans several lines, variables on the following lines
are lined up to the first one.

*** We now recognize and better indent continuations in array
comprehensions.

*** New option `js-switch-indent-offset`.

** MH-E has been updated to MH-E version 8.5.
See MH-E-NEWS for details.

+++
** Octave mode
*** Font locking for texinfo comments and new keywords
*** Completion in Octave file buffers
*** Eldoc support
*** Jump to definition
*** Documentation lookup/search
*** Code cleanup and various bug fixes

** OPascal mode is the new name for Delphi mode.

*** All delphi-* variables and functions have been renamed to opascal-*.
*** `delphi-newline-always-indents' is not supported any more.
Use `electric-indent-mode' instead.
*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.

** Package

*** The format of `archive-contents' files, generated by package
repositories, has changed to allow a new (fifth) element in the data
vectors, containing an associative list with extra properties.

*** `describe-package' buffer uses the `:url' extra property to
display a `Homepage' header, if it's present.

661 662 663 664 665 666 667
*** In the buffer produced by `describe-package', there are now buttons
listing the keywords related to that package.  You can click on them
to see other packages related to any given keyword.

*** In the *Packages* buffer, `f' or the Package->Filter menu filters
the packages by a keyword.

Chong Yidong's avatar
Chong Yidong committed
668
** Prolog mode
669

Chong Yidong's avatar
Chong Yidong committed
670 671
*** `prolog-use-smie' has been removed, along with the non-SMIE
indentation code.
Xue Fuqiao's avatar
Xue Fuqiao committed
672

Chong Yidong's avatar
Chong Yidong committed
673
** Remember
674

Chong Yidong's avatar
Chong Yidong committed
675 676
*** The new command `remember-notes' creates a buffer which is saved
on `kill-emacs'.
Xue Fuqiao's avatar
Xue Fuqiao committed
677

Chong Yidong's avatar
Chong Yidong committed
678 679 680 681 682 683
You may think of it as a *scratch* buffer whose content is preserved.
In fact, it was designed as a replacement for *scratch* buffer and can
be used that way by setting `initial-buffer-choice' to
`remember-notes' and `remember-notes-buffer-name' to "*scratch*".
Without the second change, *scratch* buffer will still be there for
notes that do not need to be preserved.
684

Chong Yidong's avatar
Chong Yidong committed
685 686 687
*** The Remember package can now store notes in separates files.
You can use the new function `remember-store-in-files' within the
`remember-handler-functions' option.
688

Chong Yidong's avatar
Chong Yidong committed
689 690
See `remember-data-directory' and `remember-directory-file-name-format'
for new options related to this function.
691

Chong Yidong's avatar
Chong Yidong committed
692 693 694 695
** Rmail

*** Customize `rmail-mbox-format' to influence some minor aspects of
how Rmail displays non-MIME messages.
696

697
---
Chong Yidong's avatar
Chong Yidong committed
698 699
*** The `unrmail' command now converts from BABYL to mboxrd format,
rather than mboxo.  Customize `unrmail-mbox-format' to change this.
700

Chong Yidong's avatar
Chong Yidong committed
701
** Ruby mode
702

Chong Yidong's avatar
Chong Yidong committed
703
*** New option `ruby-encoding-magic-comment-style'.
704

Chong Yidong's avatar
Chong Yidong committed
705
*** New option `ruby-custom-encoding-magic-comment-template'.
706

Chong Yidong's avatar
Chong Yidong committed
707
*** New mode menu.
708

Chong Yidong's avatar
Chong Yidong committed
709 710 711 712 713
*** Improved syntax highlighting and indentation.

*** Add more Ruby file types to `auto-mode-alist'.

*** New option `ruby-align-to-stmt-keywords'.
714

715 716
*** New `electric-indent-mode' integration.

717
** Search and Replace
718

719
+++
720 721 722 723
*** New global command `M-s .' (`isearch-forward-symbol-at-point')
starts a symbol (identifier) incremental search forward with the
symbol found near point added to the search string initially.

Chong Yidong's avatar
Chong Yidong committed
724
+++
725 726 727
*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.

728 729 730
*** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
between nil and the value of the option `search-invisible' (or `open'
when it's nil).
731

732 733 734
*** `query-replace' skips invisible text when `search-invisible' is nil,
and opens overlays with hidden text when `search-invisible' is `open'.

735
+++
Juri Linkov's avatar
Juri Linkov committed
736 737 738 739
*** A negative prefix arg of replacement commands replaces backward.
`M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
backward, `M-s w words M-- M-%' replaces a sequence of words backward.

740 741 742 743
+++
*** By default, prefix arguments do not now terminate Isearch mode.
Set `isearch-allow-prefix' to nil to restore old behavior.

Chong Yidong's avatar
Chong Yidong committed
744
+++
745 746 747 748
*** More Isearch commands accept prefix arguments, namely
`isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
`isearch-yank-line'.

Chong Yidong's avatar
Chong Yidong committed
749
+++
750 751 752 753 754 755 756 757
*** Word search now matches whitespace at the beginning/end
of the search string if it contains leading/trailing whitespace.
In an incremental word search or when using a non-nil LAX argument
of `word-search-regexp', the lax matching can also match part of
the first word (in addition to the lax matching of the last word).
The same rules are now applied to the symbol search with the difference
that it matches symbols, and non-symbol characters between symbols.

Chong Yidong's avatar
Chong Yidong committed
758 759
+++
** SES
Bill Wohler's avatar
Bill Wohler committed
760

Chong Yidong's avatar
Chong Yidong committed
761
*** New command `ses-rename-cell' allows assigning names to SES cells.
762

Chong Yidong's avatar
Chong Yidong committed
763
** Shell
Chong Yidong's avatar
Chong Yidong committed
764
---
Chong Yidong's avatar
Chong Yidong committed
765 766 767 768
*** `explicit-bash-args' now always defaults to use --noediting.
During initialization, Emacs no longer expends a process to decide
whether it is safe to use Bash's --noediting option.  These days
--noediting is ubiquitous; it was introduced in 1996 in Bash version 2.
769

Chong Yidong's avatar
Chong Yidong committed
770
** Shell Script mode
771

Chong Yidong's avatar
Chong Yidong committed
772 773
*** `sh-mode' now has the mode own `add-log-current-defun-function'.
You can pick the name of the function and the variables with `C-x 4 a'.
774

775 776
*** The SMIE indentation engine is now used by default.

Chong Yidong's avatar
Chong Yidong committed
777 778 779 780 781 782 783
** SMIE indentation can be customized via `smie-config'.
The customization can be guessed by Emacs by providing a sample indented
file and letting SMIE learn from it.

** Term mode

*** New option `term-suppress-hard-newline'.
784

785 786 787 788 789
** Todo mode has been rewritten and enhanced.
New features include:
- support for multiple todo files and archive files of done items;
- renaming, reordering, moving, merging, and deleting categories;
- sortable tabular summaries of categories and the types of items they contain;
Paul Eggert's avatar
Paul Eggert committed
790
- cross-category lists of items filtered by specific criteria;
791 792 793 794 795 796 797
- more fine-grained interaction with the Emacs diary, by being able to decide
  for each todo item whether it appears in the Fancy Diary display;
- highly flexible new item insertion and item editing;
- moving items between categories, storing done items in their category or in
  archive files, undoing or unarchiving done items;
- reprioritizing items by inputting a numerical priority;
- extensive customizability of operation and display, including numerous faces.
798
The Todo mode user manual describes all commands and most user options.
799 800 801 802 803 804
To support some of these features, a new file format is used, which is
incompatible with the old format; however, you can convert old todo and done
item files to the new format on initializing the first new todo file, or at any
later time with the provided conversion command.  The old version of
todo-mode.el has been made obsolete and renamed otodo-mode.el.

Chong Yidong's avatar
Chong Yidong committed
805 806 807 808 809 810 811 812 813
** 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.

814
** Tramp
815

816 817
*** The experimental url syntax for remote file names is withdrawn.

818 819
+++
*** New connection method "adb", which allows to access Android
820 821
devices by the Android Debug Bridge.  The variable `tramp-adb-program'
can be used to adapt the path of the "adb" program, if needed.
822

823 824 825 826
*** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
"scpc" and "rsyncc" are discontinued.  The ssh option
"ControlMaster=auto" is set automatically in all ssh-based methods,
when possible.
827

828 829 830
+++
*** Handlers for `file-acl' and `set-file-acl' for remote machines
which support POSIX ACLs.
831

832 833 834 835
+++
*** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
for remote machines which support filesystem notifications.

836 837 838
** New command `url-cookie-list' displays all the current cookies, and
allows deleting selected cookies.

Chong Yidong's avatar
Chong Yidong committed
839
** VC and related modes
840

Xue Fuqiao's avatar
Xue Fuqiao committed
841
+++
Chong Yidong's avatar
Chong Yidong committed
842 843
*** In VC directory mode, `D' displays diffs between VC-controlled
whole tree revisions.
844

Xue Fuqiao's avatar
Xue Fuqiao committed
845
+++
Chong Yidong's avatar
Chong Yidong committed
846 847
*** In VC directory mode, `L' lists the change log for the current VC
controlled tree in a window.
848

Xue Fuqiao's avatar
Xue Fuqiao committed
849
+++
Chong Yidong's avatar
Chong Yidong committed
850 851
*** In VC directory mode, `I' shows a log of changes that will be
received with a pull operation.
852

Xue Fuqiao's avatar
Xue Fuqiao committed
853
+++
Chong Yidong's avatar
Chong Yidong committed
854 855 856
*** `C-x v G' (globally) and `G' (in VC directory mode) ignores a file
under current version control system.  When called with a prefix
argument, you can remove a file from the ignored file list.
857

858
---
Chong Yidong's avatar
Chong Yidong committed
859 860
*** `cvs-append-to-ignore' has been renamed to `vc-cvs-append-to-ignore'
because it is moved to vc-cvs.el.
861

Chong Yidong's avatar
Chong Yidong committed
862
** VHDL mode
863

Chong Yidong's avatar
Chong Yidong committed
864
*** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
865

Chong Yidong's avatar
Chong Yidong committed
866
*** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
867

Chong Yidong's avatar
Chong Yidong committed
868
** Woman
869

Chong Yidong's avatar
Chong Yidong committed
870 871
*** The commands `woman-default-faces' and `woman-monochrome-faces'
are obsolete.  Customize the `woman-*' faces instead.
872

Chong Yidong's avatar
Chong Yidong committed
873 874
** Obsolete packages:

875 876
*** Iswitchb is made obsolete by icomplete-mode.

Chong Yidong's avatar
Chong Yidong committed
877 878
*** longlines.el is obsolete; use visual-line-mode instead.

Glenn Morris's avatar
Glenn Morris committed
879 880 881
+++
*** sup-mouse.el.

Chong Yidong's avatar
Chong Yidong committed
882 883
*** terminal.el is obsolete; use term.el instead.

884 885
*** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.

Paul Eggert's avatar
Paul Eggert committed
886
*** xesam.el is obsolete, because the XESAM project has been canceled.
Michael Albinus's avatar
Michael Albinus committed
887

Glenn Morris's avatar
Glenn Morris committed
888 889 890
+++
*** yow.el is obsolete; use fortune.el or cookie1.el instead.

Glenn Morris's avatar
Glenn Morris committed
891 892 893 894
---
*** The Info-edit command is obsolete.  Editing Info nodes by hand
has not been relevant for some time.

895

896
* New Modes and Packages in Emacs 24.4
Juanma Barranquero's avatar
Juanma Barranquero committed
897

Chong Yidong's avatar
Chong Yidong committed
898 899 900 901
** New package `eww' is a built-in web browser.
It is only available if Emacs is compiled with libxml2 support.

** New minor mode `superword-mode', defined in subword.el
Ted Zlatanov's avatar
Ted Zlatanov committed
902 903 904 905
`superword-mode' overrides the default word motion commands to treat
symbol_words as a single word, similar to what `subword-mode' does and
using the same internal functions.

Chong Yidong's avatar
Chong Yidong committed
906
** New package nadvice.el offers lighter-weight advice facilities.
907 908 909 910 911 912
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.

Chong Yidong's avatar
Chong Yidong committed
913
** New package frameset.el.
914 915 916 917 918
It provides a set of operations to save a frameset (the state of all
or a subset of the existing frames and windows, somewhat similar to a
frame configuration), both in-session and persistently, and restore it
at some point in the future.

Michael Albinus's avatar
Michael Albinus committed
919
+++
Chong Yidong's avatar
Chong Yidong committed
920 921
** New package filenotify.el provides an interface for file system
notifications.  It requires that Emacs be compiled with one of the
922 923
low-level libraries gfilenotify.c, inotify.c or w32notify.c.

Glenn Morris's avatar
Glenn Morris committed
924

925
* Incompatible Lisp Changes in Emacs 24.4
926

927
---
928 929
** `kill-region' lost its `yank-handler' optional argument.

930
+++
931 932 933
** `(input-pending-p)' no longer runs other timers which are ready to
run.  The new optional CHECK-TIMERS param allows for the prior behavior.

Chong Yidong's avatar
Chong Yidong committed
934
+++
935 936
** `defvar' and `defcustom' in a let-binding affect the "external" default.

937
---
938 939 940
** The syntax of ?» and ?« is now punctuation instead of matched parens.
Some languages match those as »...« and others as «...» so better stay neutral.

941
---
Chong Yidong's avatar
Chong Yidong committed
942 943
** In compiled Lisp files, the header no longer includes a timestamp.

944
+++
945
** The default file coding for Emacs Lisp files is now utf-8.
Chong Yidong's avatar
Chong Yidong committed
946 947 948 949 950
(See `file-coding-system-alist'.)  In most cases, this change is
transparent, but files that contain unusual characters without
specifying an explicit coding system may fail to load with obscure
errors.  You should either convert them to utf-8 or add an explicit
`coding:' cookie.
951

952
+++
Chong Yidong's avatar
Chong Yidong committed
953
** `overriding-terminal-local-map' no longer replaces the local keymaps.
954 955 956
It used to disable the minor mode, major mode, and text-property keymaps,
whereas now it simply has higher precedence.

Juanma Barranquero's avatar
Juanma Barranquero committed
957
** Default process filters and sentinels are not nil any more.
958 959
Instead they default to a function which does what the nil value used to do.

Chong Yidong's avatar
Chong Yidong committed
960
+++
961
** `read-event' does not return decoded chars in ttys any more.
Chong Yidong's avatar
Chong Yidong committed
962 963 964 965
As was the case in Emacs 22 and before, the decoding of terminal
input, according to `keyboard-coding-system', is not performed in
`read-event' any more.  But unlike in Emacs 22, this decoding is still
done before input-decode-map, function-key-map, etc.
966

967 968
---
** Removed `inhibit-local-menu-bar-menus'.
969

970 971
---
** Frame-local variables that affect redisplay do not work any more.
972 973 974
More specifically, the redisplay does not bother to check for a frame-local
value when looking up variables.

Chong Yidong's avatar
Chong Yidong committed
975
+++
Chong Yidong's avatar
Chong Yidong committed
976
** nil and "unbound" are indistinguishable in `symbol-function'.
Chong Yidong's avatar
Chong Yidong committed
977 978
`symbol-function' does not signal a `void-function' error any more.
To determine if a symbol's function definition is void, use `fboundp'.
979

Chong Yidong's avatar
Chong Yidong committed
980
+++
981 982
** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
983

Chong Yidong's avatar
Chong Yidong committed
984 985 986 987
---
** `dolist' no longer binds VAR while evaluating the RESULT form,
when lexical binding is enabled.  Previously, VAR was bound to nil,
which often led to spurious unused-variable warnings.
988

Chong Yidong's avatar
Chong Yidong committed
989
+++
990 991 992 993 994 995
** 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'.

Chong Yidong's avatar
Chong Yidong committed
996
+++
997 998 999 1000 1001 1002
** By default `copy-file' no longer copies file permission bits to an
existing destination; and it sets the file permission bits of a newly
created destination to those of the source, masked by the default file
permissions.  To copy the file permission bits, pass t as the
PRESERVE-PERMISSIONS argument of `copy-file'.

Chong Yidong's avatar
Chong Yidong committed
1003
+++
Paul Eggert's avatar
Paul Eggert committed
1004 1005 1006
** `visited-file-modtime' now returns -1 for nonexistent files.
Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous
in the presence of files with negative time stamps.
1007

Chong Yidong's avatar
Chong Yidong committed
1008
+++
Chong Yidong's avatar
Chong Yidong committed
1009
** The cars of the elements in `interpreter-mode-alist' are now
Chong Yidong's avatar
Chong Yidong committed
1010
treated as regexps rather than literal strings.
1011

Glenn Morris's avatar
Glenn Morris committed
1012

1013
* Lisp Changes in Emacs 24.4
1014

Chong Yidong's avatar
Chong Yidong committed
1015
+++
Chong Yidong's avatar
Chong Yidong committed
1016 1017
** The second argument of `eval' can now specify a lexical environment.

1018
+++
Chong Yidong's avatar
Chong Yidong committed
1019
** New functions `special-form-p' and `macrop'.
Chong Yidong's avatar
Chong Yidong committed
1020 1021 1022 1023 1024

** New macro `define-alternatives' can be used to define generic commands.
Generic commands are interactive functions whose implementation can be
selected among several alternatives, as a matter of user preference.

Chong Yidong's avatar
Chong Yidong committed
1025 1026 1027
** The `defalias-fset-function' property lets you catch `defalias'
calls, and redirect them to your own function, instead of `fset'.

Xue Fuqiao's avatar
Xue Fuqiao committed
1028
+++
Chong Yidong's avatar
Chong Yidong committed
1029 1030 1031 1032
** New variable `enable-dir-local-variables'.
Directory-local variables are ignored if this is nil.  This may be
useful for modes that want to ignore directory-locals while still
respecting file-local variables.
Chong Yidong's avatar
Chong Yidong committed
1033

Chong Yidong's avatar
Chong Yidong committed
1034 1035
+++
** New function `get-pos-property'.
Chong Yidong's avatar
Chong Yidong committed
1036

Chong Yidong's avatar
Chong Yidong committed
1037
** Completion changes
Chong Yidong's avatar
Chong Yidong committed
1038

Chong Yidong's avatar
Chong Yidong committed
1039 1040 1041
*** The separator for `completing-read-multiple' can now be a regexp.
The default separator has been changed to allow surrounding spaces
around the comma.
Chong Yidong's avatar
Chong Yidong committed
1042

Chong Yidong's avatar
Chong Yidong committed
1043 1044 1045 1046
*** The `common-substring' arg of `display-completion-list' is obsolete.
Either use `completion-all-completions', which returns highlighted
strings (including for partial or substring completion), or call
`completion-hilit-commonality' to add the highlight.
1047

1048 1049 1050