NEWS 140 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

3
Copyright (C) 2010-2013 Free Software Foundation, Inc.
4
See the end of the file for license conditions.
Dave Love's avatar
#  
Dave Love committed
5

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

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

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

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

Glenn Morris's avatar
Glenn Morris committed
17
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

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

Chong Yidong's avatar
Chong Yidong committed
41
** The configure option `--with-crt-dir' has been removed.
42 43 44
It is no longer needed, as the crt*.o files are no longer linked
specially.

45 46 47
** Directories passed to configure option `--enable-locallisppath' are
no longer created during installation.

Chong Yidong's avatar
Chong Yidong committed
48 49 50 51
** 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.
52

53 54 55 56
---
** Emacs for NS (OSX, GNUStep) can be built with ImageMagick support.
pkg-config is required to find ImageMagick libraries.

57 58 59 60 61
** 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

Glenn Morris's avatar
Glenn Morris committed
62

63
* Startup Changes in Emacs 24.4
Glenn Morris's avatar
Glenn Morris committed
64

65 66 67 68 69 70 71 72 73 74
+++
** 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.)

75 76
+++
** The -L option, which normally prepends its argument to load-path,
77 78
will instead append, if the argument begins with `:' (or `;' on MS Windows;
i.e., `path-separator').
79

80 81 82 83 84 85
+++
** 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
86 87 88 89
+++
** The user option `initial-buffer-choice' can now specify a function
to set up the initial buffer.

Glenn Morris's avatar
Glenn Morris committed
90

91
* Changes in Emacs 24.4
92

93 94 95 96 97 98
+++
** 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
99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114
+++
** 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.)

115
+++
Chong Yidong's avatar
Chong Yidong committed
116 117 118 119
** 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.
120

Chong Yidong's avatar
Chong Yidong committed
121
** Emacs now supports ACLs (access control lists).
122 123 124 125
+++
*** Emacs preserves the ACL entries of files when backing up.
+++
*** New functions `file-acl' and `set-file-acl' get and set the ACL
126 127 128
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.
129

130 131 132 133 134 135
** 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.

136 137 138 139 140 141 142 143
*** 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
144 145 146
+++
** The cursor stops blinking after 10 blinks (by default) on X and NS.
You can change the default by customizing `blink-cursor-blinks'.
147

Chong Yidong's avatar
Chong Yidong committed
148 149 150 151 152
+++
** 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
153

Tassilo Horn's avatar
Tassilo Horn committed
154
+++
Chong Yidong's avatar
Chong Yidong committed
155 156 157 158 159
*** 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.
160

Chong Yidong's avatar
Chong Yidong committed
161 162
+++
*** The key `?' now describes prefix bindings, like `C-h'.
163

Chong Yidong's avatar
Chong Yidong committed
164
*** The command `quail-help' is deleted.  Use `C-h C-\'
165 166
(`describe-input-method') instead.

Chong Yidong's avatar
Chong Yidong committed
167
** Frame and window changes
168

Chong Yidong's avatar
Chong Yidong committed
169 170 171
+++
*** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
172

Chong Yidong's avatar
Chong Yidong committed
173 174 175 176
*** 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.
177

178
+++
Chong Yidong's avatar
Chong Yidong committed
179 180 181 182 183 184 185 186
*** 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.
187

188
+++
Chong Yidong's avatar
Chong Yidong committed
189 190 191 192 193 194
*** 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
195
+++
Chong Yidong's avatar
Chong Yidong committed
196 197 198 199 200 201 202 203 204 205 206
*** `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.
207

208
+++
Chong Yidong's avatar
Chong Yidong committed
209 210
** `cache-long-line-scans' has been renamed to `cache-long-scans'
because it affects caching of paragraph scanning results as well.
211

Chong Yidong's avatar
Chong Yidong committed
212 213 214 215 216 217 218 219
---
** 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
220 221 222 223 224 225 226 227 228 229 230 231 232 233
** 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.

*** `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
234 235 236 237 238 239 240 241 242 243 244

* 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.
245

Chong Yidong's avatar
Chong Yidong committed
246
*** `electric-indent-mode' is enabled by default.
247

Chong Yidong's avatar
Chong Yidong committed
248
*** `tab-stop-list' is now implicitly extended to infinity by repeating
Xue Fuqiao's avatar
Xue Fuqiao committed
249 250
the last step.  Its default value is changed to nil which means a tab
stop every `tab-width' columns.
251

Chong Yidong's avatar
Chong Yidong committed
252
** Filling changes
253

Chong Yidong's avatar
Chong Yidong committed
254 255 256 257 258 259 260 261 262 263
*** 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)
264

265
+++
Chong Yidong's avatar
Chong Yidong committed
266 267 268 269
** 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.
270

271 272 273 274 275 276 277
+++
** 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
278
** Register changes
279

Chong Yidong's avatar
Chong Yidong committed
280
*** All register commands can now show help with preview.
281

282 283 284
+++
*** New command `C-x C-k x' (`kmacro-to-register') stores keyboard
macros in registers.
285

Chong Yidong's avatar
Chong Yidong committed
286 287 288 289 290 291 292 293 294
*** 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.
295

296

297
* Changes in Specialized Modes and Packages in Emacs 24.4
298

Johan Bockgård's avatar
Johan Bockgård committed
299
** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
Stefan Monnier's avatar
Stefan Monnier committed
300 301 302 303 304 305 306 307 308 309 310 311 312 313 314
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
315 316 317 318 319
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
320
** Backtrace and debugger
321

Chong Yidong's avatar
Chong Yidong committed
322 323 324
*** 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.
325

326 327
+++
*** New command `v' (`debugger-toggle-locals') displays local vars.
328

Chong Yidong's avatar
Chong Yidong committed
329 330
*** New minor mode `jit-lock-debug-mode' lets you use the debuggers on
code run via JIT Lock.
331

332 333
** Battery

Xue Fuqiao's avatar
Xue Fuqiao committed
334
---
335 336
*** Battery information via the BSD `apm' utility is now supported.

337 338 339 340
** Buffer Menu

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

341 342
** Calendar and Diary

343
---
Chong Yidong's avatar
Chong Yidong committed
344 345
*** New faces `calendar-weekday-header', `calendar-weekend-header',
and `calendar-month-header'.
346 347 348

*** New option `calendar-day-header-array'.

349
+++
Glenn Morris's avatar
Glenn Morris committed
350
*** New variable `diary-from-outlook-function', used by the command
351 352
`diary-from-outlook'.

Chong Yidong's avatar
Chong Yidong committed
353
*** The variable `calendar-font-lock-keywords' is obsolete.
354

355 356 357 358 359 360 361 362 363 364 365 366 367 368
** 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.

369 370
*** Support for ISO 8601 dates.

Chong Yidong's avatar
Chong Yidong committed
371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399
** 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

400
*** New macro `cl-tagbody'.
Chong Yidong's avatar
Chong Yidong committed
401 402 403 404 405 406

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

** CUA mode

Chong Yidong's avatar
Chong Yidong committed
407 408 409 410 411 412
*** 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
413 414 415

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

416 417 418 419 420 421 422 423
** 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
424 425
** Delete Selection mode can now be used without `transient-mark-mode'.

426 427
** Desktop

428 429
*** `desktop-auto-save-timeout' defines the number of seconds idle time
before auto-save of the desktop.
430

431
*** `desktop-restore-frames', enabled by default, allows saving and
432
restoring the frame/window configuration (frameset).  Additional options
433
`desktop-restore-in-current-display', `desktop-restore-reuses-frames'
434
and `desktop-restore-forces-onscreen' offer further customization.
435

436 437 438 439
** Dired

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

Chong Yidong's avatar
Chong Yidong committed
440
** Eldoc Mode works properly in the minibuffer.
441

442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457
** 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
458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495
** 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.
496

Chong Yidong's avatar
Chong Yidong committed
497
*** key bindings to navigate through and select the completions.
498

Chong Yidong's avatar
Chong Yidong committed
499
*** The icomplete-separator is customizable, and its default has changed.
500

Chong Yidong's avatar
Chong Yidong committed
501
*** Removed icomplete-show-key-bindings.
502

Chong Yidong's avatar
Chong Yidong committed
503 504 505 506 507
*** 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
508

Chong Yidong's avatar
Chong Yidong committed
509
*** Ido has a manual now.
510

Chong Yidong's avatar
Chong Yidong committed
511
*** `ido-use-virtual-buffers' takes a new value 'auto.
512

Chong Yidong's avatar
Chong Yidong committed
513 514 515 516
*** `ido-decorations' has been slightly extended to give a bit more control.

** Image mode

517
+++
Chong Yidong's avatar
Chong Yidong committed
518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547
*** 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.

*** 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.

*** New commands to speed up, slow down, or reverse animation.
---
*** 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
548
---
Chong Yidong's avatar
Chong Yidong committed
549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591
*** 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.

592 593 594 595 596 597 598
*** 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
599
** Prolog mode
600

Chong Yidong's avatar
Chong Yidong committed
601 602
*** `prolog-use-smie' has been removed, along with the non-SMIE
indentation code.
Xue Fuqiao's avatar
Xue Fuqiao committed
603

Chong Yidong's avatar
Chong Yidong committed
604
** Remember
605

Chong Yidong's avatar
Chong Yidong committed
606 607
*** The new command `remember-notes' creates a buffer which is saved
on `kill-emacs'.
Xue Fuqiao's avatar
Xue Fuqiao committed
608

Chong Yidong's avatar
Chong Yidong committed
609 610 611 612 613 614
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.
615

Chong Yidong's avatar
Chong Yidong committed
616 617 618
*** 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.
619

Chong Yidong's avatar
Chong Yidong committed
620 621
See `remember-data-directory' and `remember-directory-file-name-format'
for new options related to this function.
622

Chong Yidong's avatar
Chong Yidong committed
623 624 625 626
** Rmail

*** Customize `rmail-mbox-format' to influence some minor aspects of
how Rmail displays non-MIME messages.
627

628
---
Chong Yidong's avatar
Chong Yidong committed
629 630
*** The `unrmail' command now converts from BABYL to mboxrd format,
rather than mboxo.  Customize `unrmail-mbox-format' to change this.
631

Chong Yidong's avatar
Chong Yidong committed
632
** Ruby mode
633

Chong Yidong's avatar
Chong Yidong committed
634
*** New option `ruby-encoding-magic-comment-style'.
635

Chong Yidong's avatar
Chong Yidong committed
636
*** New option `ruby-custom-encoding-magic-comment-template'.
637

Chong Yidong's avatar
Chong Yidong committed
638
*** New mode menu.
639

Chong Yidong's avatar
Chong Yidong committed
640 641 642 643 644
*** Improved syntax highlighting and indentation.

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

*** New option `ruby-align-to-stmt-keywords'.
645

646 647
*** New `electric-indent-mode' integration.

648
** Search and Replace
649

650
+++
651 652 653 654
*** 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.

655 656 657
*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.

658 659 660
*** `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).
661

662 663 664
*** `query-replace' skips invisible text when `search-invisible' is nil,
and opens overlays with hidden text when `search-invisible' is `open'.

665
+++
Juri Linkov's avatar
Juri Linkov committed
666 667 668 669
*** 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.

670 671 672 673
+++
*** By default, prefix arguments do not now terminate Isearch mode.
Set `isearch-allow-prefix' to nil to restore old behavior.

674 675 676 677
*** More Isearch commands accept prefix arguments, namely
`isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
`isearch-yank-line'.

678 679 680 681 682 683 684 685
*** 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
686 687
+++
** SES
Bill Wohler's avatar
Bill Wohler committed
688

Chong Yidong's avatar
Chong Yidong committed
689
*** New command `ses-rename-cell' allows assigning names to SES cells.
690

Chong Yidong's avatar
Chong Yidong committed
691
** Shell
692

Chong Yidong's avatar
Chong Yidong committed
693 694 695 696
*** `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.
697

Chong Yidong's avatar
Chong Yidong committed
698
** Shell Script mode
699

Chong Yidong's avatar
Chong Yidong committed
700 701
*** `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'.
702

703 704
*** The SMIE indentation engine is now used by default.

Chong Yidong's avatar
Chong Yidong committed
705 706 707 708 709 710 711
** 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'.
712

713 714 715 716 717
** 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
718
- cross-category lists of items filtered by specific criteria;
719 720 721 722 723 724 725
- 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.
726
The Todo mode user manual describes all commands and most user options.
727 728 729 730 731 732
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
733 734 735 736 737 738 739 740 741
** 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.

742
** Tramp
743

744 745
*** The experimental url syntax for remote file names is withdrawn.

746 747
+++
*** New connection method "adb", which allows to access Android
748 749
devices by the Android Debug Bridge.  The variable `tramp-adb-program'
can be used to adapt the path of the "adb" program, if needed.
750

751 752 753 754
*** 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.
755

756 757 758
+++
*** Handlers for `file-acl' and `set-file-acl' for remote machines
which support POSIX ACLs.
759

760 761 762 763
+++
*** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
for remote machines which support filesystem notifications.

Chong Yidong's avatar
Chong Yidong committed
764
** VC and related modes
765

Xue Fuqiao's avatar
Xue Fuqiao committed
766
+++
Chong Yidong's avatar
Chong Yidong committed
767 768
*** In VC directory mode, `D' displays diffs between VC-controlled
whole tree revisions.
769

Xue Fuqiao's avatar
Xue Fuqiao committed
770
+++
Chong Yidong's avatar
Chong Yidong committed
771 772
*** In VC directory mode, `L' lists the change log for the current VC
controlled tree in a window.
773

Xue Fuqiao's avatar
Xue Fuqiao committed
774
+++
Chong Yidong's avatar
Chong Yidong committed
775 776
*** In VC directory mode, `I' shows a log of changes that will be
received with a pull operation.
777

Xue Fuqiao's avatar
Xue Fuqiao committed
778
+++
Chong Yidong's avatar
Chong Yidong committed
779 780 781
*** `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.
782

783
---
Chong Yidong's avatar
Chong Yidong committed
784 785
*** `cvs-append-to-ignore' has been renamed to `vc-cvs-append-to-ignore'
because it is moved to vc-cvs.el.
786

Chong Yidong's avatar
Chong Yidong committed
787
** VHDL mode
788

Chong Yidong's avatar
Chong Yidong committed
789
*** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.
790

Chong Yidong's avatar
Chong Yidong committed
791
*** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.
792

Chong Yidong's avatar
Chong Yidong committed
793
** Woman
794

Chong Yidong's avatar
Chong Yidong committed
795 796
*** The commands `woman-default-faces' and `woman-monochrome-faces'
are obsolete.  Customize the `woman-*' faces instead.
797

Chong Yidong's avatar
Chong Yidong committed
798 799
** Obsolete packages:

800 801
*** Iswitchb is made obsolete by icomplete-mode.

Chong Yidong's avatar
Chong Yidong committed
802 803
*** longlines.el is obsolete; use visual-line-mode instead.

Glenn Morris's avatar
Glenn Morris committed
804 805 806
+++
*** sup-mouse.el.

Chong Yidong's avatar
Chong Yidong committed
807 808
*** terminal.el is obsolete; use term.el instead.

809 810
*** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.

Michael Albinus's avatar
Michael Albinus committed
811 812
*** xesam.el.

Glenn Morris's avatar
Glenn Morris committed
813 814 815
+++
*** yow.el is obsolete; use fortune.el or cookie1.el instead.

Glenn Morris's avatar
Glenn Morris committed
816 817 818 819
---
*** The Info-edit command is obsolete.  Editing Info nodes by hand
has not been relevant for some time.

820

821
* New Modes and Packages in Emacs 24.4
Juanma Barranquero's avatar
Juanma Barranquero committed
822

Chong Yidong's avatar
Chong Yidong committed
823 824 825 826
** 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
827 828 829 830
`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
831
** New package nadvice.el offers lighter-weight advice facilities.
832 833 834 835 836 837
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
838
** New package frameset.el.
839 840 841 842 843
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
844
+++
Chong Yidong's avatar
Chong Yidong committed
845 846
** New package filenotify.el provides an interface for file system
notifications.  It requires that Emacs be compiled with one of the
847 848
low-level libraries gfilenotify.c, inotify.c or w32notify.c.

Glenn Morris's avatar
Glenn Morris committed
849

850
* Incompatible Lisp Changes in Emacs 24.4
851

852
---
853 854
** `kill-region' lost its `yank-handler' optional argument.

855
+++
856 857 858
** `(input-pending-p)' no longer runs other timers which are ready to
run.  The new optional CHECK-TIMERS param allows for the prior behavior.

859 860
** `defvar' and `defcustom' in a let-binding affect the "external" default.

861
---
862 863 864
** The syntax of ?» and ?« is now punctuation instead of matched parens.
Some languages match those as »...« and others as «...» so better stay neutral.

865
---
Chong Yidong's avatar
Chong Yidong committed
866 867
** In compiled Lisp files, the header no longer includes a timestamp.

868
+++
869
** The default file coding for Emacs Lisp files is now utf-8.
Chong Yidong's avatar
Chong Yidong committed
870 871 872 873 874
(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.
875

876
+++
Chong Yidong's avatar
Chong Yidong committed
877
** `overriding-terminal-local-map' no longer replaces the local keymaps.
878 879 880
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
881
** Default process filters and sentinels are not nil any more.
882 883
Instead they default to a function which does what the nil value used to do.

884 885 886 887 888
** `read-event' does not return decoded chars in ttys any more.
Just as was the case in Emacs-22 and before, decoding of tty input according to
keyboard-coding-system is not performed in read-event any more.  But contrary
to that past, it is still done before input-decode-map/function-key-map/...

889 890
---
** Removed `inhibit-local-menu-bar-menus'.
891

892 893
---
** Frame-local variables that affect redisplay do not work any more.
894 895 896
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
897
** nil and "unbound" are indistinguishable in `symbol-function'.
898 899 900
`symbol-function' never signals `void-function' any more.
`fboundp' returns non-nil if the symbol was `fset' to nil.

901 902
** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
903

904 905 906 907
** `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.

908 909 910 911 912 913
** 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'.

Paul Eggert's avatar
Paul Eggert committed
914 915 916
** `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.
917

Chong Yidong's avatar
Chong Yidong committed
918 919 920 921
** The cars of the elements in `interpreter-mode-alist' are now
treated as regexps rather than literal strings.  This change should
not affect you unless you are using `interpreter-mode-alist' for
something (not just adding elements to it).
922

Glenn Morris's avatar
Glenn Morris committed
923

924
* Lisp Changes in Emacs 24.4
925

Chong Yidong's avatar
Chong Yidong committed
926
+++
Chong Yidong's avatar
Chong Yidong committed
927 928
** The second argument of `eval' can now specify a lexical environment.

929
+++
Chong Yidong's avatar
Chong Yidong committed
930
** New functions `special-form-p' and `macrop'.
Chong Yidong's avatar
Chong Yidong committed
931 932 933 934 935

** 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
936 937 938 939 940 941
** The `defalias-fset-function' property lets you catch `defalias'
calls, and redirect them to your own function, instead of `fset'.

** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
text-property on the first char.

Xue Fuqiao's avatar
Xue Fuqiao committed
942
+++
Chong Yidong's avatar
Chong Yidong committed
943 944 945 946
** 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
947

Chong Yidong's avatar
Chong Yidong committed
948 949
+++
** New function `get-pos-property'.
Chong Yidong's avatar
Chong Yidong committed
950

Chong Yidong's avatar
Chong Yidong committed
951
** Completion changes
Chong Yidong's avatar
Chong Yidong committed
952

Chong Yidong's avatar
Chong Yidong committed
953 954 955
*** 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
956

Chong Yidong's avatar
Chong Yidong committed
957 958 959 960
*** 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.
961

Chong Yidong's avatar
Chong Yidong committed
962
** Terminal changes
963

964
+++
Chong Yidong's avatar
Chong Yidong committed
965 966 967
*** Functions to pop up menus and dialogs now work on all terminals,
including TTYs.  This includes `x-popup-menu', `x-popup-dialog',
`message-box', `yes-or-no-p', etc.
Eli Zaretskii's avatar
Eli Zaretskii committed
968

969 970 971 972
The function `display-popup-menus-p' will now return non-nil for a
display or frame whenever a mouse is supported on that display or
frame.

Chong Yidong's avatar
Chong Yidong committed
973 974 975 976
*** New hook `tty-setup-hook'.

** New hook `pre-redisplay-function'.

977
+++
978 979 980 981 982 983
** New bool-vector set operation functions:
*** `bool-vector-exclusive-or'
*** `bool-vector-union'
*** `bool-vector-intersection'
*** `bool-vector-set-difference'
*** `bool-vector-not'
Xue Fuqiao's avatar
Xue Fuqiao committed
984
*** `bool-vector-subsetp'
985 986
*** `bool-vector-count-consecutive'
*** `bool-vector-count-population'
987

988
+++
989 990
** Comparison functions =, <, >, <=, >= now take many arguments.

Chong Yidong's avatar
Chong Yidong committed
991
** Error-handling changes
992

993
+++
Chong Yidong's avatar
Chong Yidong committed
994
*** New function `define-error'.
995

Chong Yidong's avatar
Chong Yidong committed
996
*** `with-demoted-errors' takes an additional argument `format'.
997

998 999 1000
+++
** New macro with-eval-after-load.  Like eval-after-load, but better behaved.

1001
** New library subr-x.el for misc helper functions
1002
+++
1003
*** `hash-table-keys'
1004
+++
1005
*** `hash-table-values'
1006

1007 1008
*** `string-blank-p`
*** `string-empty-p`
1009
*** `string-join`
1010
*** `string-reverse`
1011 1012 1013
*** `string-trim-left'
*** `string-trim-right'
*** `string-trim'
1014 1015
*** `string-remove-prefix'
*** `string-remove-suffix'
1016

1017
** Obsoleted functions:
1018
*** `log10'
1019 1020 1021 1022
*** `dont-compile'
*** `lisp-complete-symbol'
*** `field-complete'
*** `minibuffer-completion-contents'
1023 1024
*** `isearch-nonincremental-exit-minibuffer'
*** `isearch-filter-visible'
1025
*** `generic-make-keywords-list'
Chong Yidong's avatar
Chong Yidong committed
1026
*** `get-upcase-table' (use `case-table-get-table' instead).
1027

1028 1029 1030 1031 1032 1033
** `with-wrapper-hook' is obsoleted by `add-function'.
The few hooks that used with-wrapper-hook are replaced as follows:
*** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
*** `completion-in-region-function' obsoletes `completion-in-region-functions'.
*** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.

1034 1035 1036
** `byte-compile-interactive-only-functions' is now obsolete.
It has been replaced by the symbol property 'interactive-only.

Xue Fuqiao's avatar
Xue Fuqiao committed
1037
+++
1038 1039 1040
** `split-string' now takes an optional argument TRIM.
The value, if non-nil, is a regexp that specifies what to trim from
the start and end of each substring.
1041