NEWS 115 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

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

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

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

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

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

Glenn Morris's avatar
Glenn Morris committed
17 18 19 20 21 22
Temporary note:
+++ indicates that the appropriate manual has already been updated.
--- means no change in the manuals is called for.
When you add a new item, please add it without either +++ or ---
so we will look at it and add it to the manual.

23 24

* Installation Changes in Emacs 24.4
25

26
** Emacs can 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

31 32 33 34 35 36
** Emacs can be compiled with file notification support.
The configure option `--with-file-notification=LIB' enables file
notification support in Emacs. This option's value should be `yes',
`no', `gfile', `inotify' or `w32'.  `yes' is a synonym for `w32' on
MS-Windows, and for `gfile' otherwise.  The default value is `yes'.

37
** The configure option --with-crt-dir has been removed.
38 39 40 41 42 43 44 45 46
It is no longer needed, as the crt*.o files are no longer linked
specially.

** Emacs for MS-Windows can now be built by running the configure script
using the MSYS environment and MinGW development tools.
This is from now on the preferred method of building Emacs on
MS-Windows.  The Windows-specific configure.bat and makefile.w32-in
files are deprecated.  See the file nt/INSTALL.MSYS for detailed
instructions.
47

48 49 50 51 52 53 54 55 56 57 58 59
Using the Posix configure script and Makefile's also means a change in
the directory structure of the Emacs installation on Windows.  It is
now the same as on GNU and Unix systems.  In particular, the auxiliary
programs, such as cmdproxy.exe and hexl.exe, are in
libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
version), version-independent site-lisp is in share/emacs/site-lisp,
version-specific Lisp files are in share/emacs/VERSION/lisp and in
share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
files are in share/emacs/VERSION/etc.  (Emacs knows about all these
directories and will find the files in there automatically; there's no
need to set any variables due to this change.)

Glenn Morris's avatar
Glenn Morris committed
60

61
* Startup Changes in Emacs 24.4
Glenn Morris's avatar
Glenn Morris committed
62 63


64
* Changes in Emacs 24.4
65

66 67
** Key ? also describes prefix bindings like C-h.

68 69 70 71 72 73 74
+++
** `apropos-variable' is now `apropos-user-option'
`apropos-user-option' shows all user options while `apropos-variable'
shows all variables.  When called with a universal prefix argument,
the two commands swap their behaviors.  When `apropos-do-all' is
non-nil, they output the same results.

75 76 77 78
+++
** `eval-defun' on an already defined defcustom calls the :set function,
if there is one.

79 80 81 82
** If the new variable `enable-dir-local-variables' is nil,
directory local variables are ignored.  May be useful for some modes
that want to ignore directory-locals while still respecting file-locals.

83 84 85 86
** 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.

87 88 89
** `initial-buffer-choice' can now specify a function to set up the
initial buffer.

90 91
** `write-region-inhibit-fsync' now defaults to t in batch mode.

92 93 94 95 96
** ACL support has been added.
+++
*** Emacs preserves the ACL entries of files when backing up.
+++
*** New functions `file-acl' and `set-file-acl' get and set the ACL
97 98 99
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.
100

101
** New option `scroll-bar-adjust-thumb-portion'.
102 103 104
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).
105

106 107
** In compiled Lisp files, the header no longer includes a timestamp.

108 109 110 111 112 113
** 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.

Glenn Morris's avatar
Glenn Morris committed
114

115
* Editing Changes in Emacs 24.4
116

117 118 119 120 121
** `split-window' is no longer a command, just a non-interactive function.
As a command it was a special case of `split-window-below', and as such
superfluous.  After being reimplemented in Lisp, its interactive form
was mistakenly retained.

122 123
** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
124

125 126 127
** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
Eg View mode, etc.

128 129
** New command `kmacro-to-register' to store keyboard macros in registers.

130 131 132 133 134
** Shell Script mode

*** `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'.

135

136
* Changes in Specialized Modes and Packages in Emacs 24.4
137

138 139 140 141 142 143 144 145 146 147 148 149
** `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'.

150 151 152 153 154 155
** `remember' can now store notes in separates files
You can use the new function `remember-store-in-files' within the
`remember-handler-functions' option.

See `remember-data-directory' and `remember-directory-file-name-format'
for new options related to this function.
156 157
** `ido-decorations' has been slightly extended to give a bit more control.

Stefan Monnier's avatar
Stefan Monnier committed
158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176
** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
Affected files:
~/.emacs.d/timelog	replaces  ~/.timelog
~/.emacs.d/todo-do	replaces  ~/.todo-do
~/.emacs.d/todo-done	replaces  ~/.todo-done
~/.emacs.d/todo-top	replaces  ~/.todo-top
~/.emacs.d/vip		replaces  ~/.vip
~/.emacs.d/viper	replaces  ~/.viper
~/.emacs.d/ido.last	replaces  ~/.ido.last
~/.emacs.d/kkcrc	replaces  ~/.kkcrc
~/.emacs.d/quickurls	replaces  ~/.quickurls
~/.emacs.d/idlwave	replaces  ~/.idlwave
~/.emacs.d/bdfcache.el	replaces  ~/.bdfcache.el
~/.emacs.d/places	replaces  ~/.emacs-places
~/.emacs.d/shadows	replaces  ~/.shadows
~/.emacs.d/shadow_todo	replaces  ~/.shadow_todo
~/.emacs.d/strokes	replaces  ~/.strokes
~/.emacs.d/notes	replaces  ~/.notes
~/.emacs.d/type-break	replaces  ~/.type-break
177

178 179 180 181 182 183
** Delphi mode is now called OPascal mode.
*** All delphi-* variables and functions have been renamed to opascal-*.
*** `delphi-newline-always-indents' is not supported any more
use `electric-indent-mode' instead.
*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.

184 185
** Eldoc Mode works properly in the minibuffer.

186 187
** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.

188 189 190
** completing-read-multiple's separator can now be a regexp.
The default separator is changed to allow surrounding spaces around the comma.

191 192 193 194
** Battery

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

195 196 197
** Calendar and Diary

+++
Glenn Morris's avatar
Glenn Morris committed
198
*** New variable `diary-from-outlook-function', used by the command
199 200
`diary-from-outlook'.

201 202 203 204 205 206 207
** cl-lib

*** New macro cl-tagbody.

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

208 209 210 211 212 213 214 215 216 217 218 219 220 221
** 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.

222 223
*** Support for ISO 8601 dates.

224 225 226 227 228
** Desktop

*** `desktop-auto-save-timeout' defines the number of seconds between
auto-saves of the desktop.

229 230 231 232
** Dired

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

233 234 235 236 237 238
** 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.

239 240 241
---
** New F90 mode option `f90-smart-end-names'.

242 243 244 245 246
** Icomplete is a bit more like IDO.
*** key bindings to navigate through and select the completions.
*** The icomplete-separator is customizable, and its default has changed.
*** Removed icomplete-show-key-bindings.

247
** Image mode
248 249 250 251 252

*** 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.

253 254 255 256
*** 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.

257 258 259 260 261 262
---
*** 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.

263 264 265 266 267 268
** Info

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

269 270 271 272 273 274 275 276 277 278
** 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.

279
** Search and Replace
280

281 282 283 284
*** 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.

285 286 287
*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.

288 289 290
*** `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).
291

292 293 294
*** `query-replace' skips invisible text when `search-invisible' is nil,
and opens overlays with hidden text when `search-invisible' is `open'.

Bill Wohler's avatar
Bill Wohler committed
295
** MH-E has been updated to MH-E version 8.5.
Bill Wohler's avatar
Bill Wohler committed
296 297
See MH-E-NEWS for details.

298 299 300 301 302 303 304 305
---
** The unrmail command converts from BABYL to mboxrd rather than mboxo.
Customize `unrmail-mbox-format' to change this.

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

306 307 308
+++
** New function `ses-rename-cell' to give SES cells arbitrary names.

309 310 311 312 313 314 315 316 317
** 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.

318 319
** New command `delete-duplicate-lines' has new types of operation:
When its arg ADJACENT is non-nil (when called interactively with C-u C-u)
320 321
it works like the utility `uniq'.  Otherwise by default it deletes
duplicate lines everywhere in the region without regard to adjacency.
322 323
When it arg KEEP-BLANKS is non-nil (when called interactively with C-u C-u C-u),
duplicate blank lines are preserved.
324

325 326 327 328 329
** New `cycle-spacing' command allows cycling between having just one
space, no spaces, or reverting to the original spacing.  Like
`just-one-space' command it can handle or ignore newlines and
leave different number of spaces.

330
** Tramp
331

332 333
+++
*** New connection method "adb", which allows to access Android
334 335
devices by the Android Debug Bridge.  The variable `tramp-adb-program'
can be used to adapt the path of the "adb" program, if needed.
336

337 338 339 340
*** 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.
341

342 343 344
+++
*** Handlers for `file-acl' and `set-file-acl' for remote machines
which support POSIX ACLs.
345

Glenn Morris's avatar
Glenn Morris committed
346 347 348 349 350 351
** VHDL mode

*** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.

*** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.

352 353 354 355 356
** Woman

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

357 358 359 360 361 362 363
** Eshell

*** 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.

Chong Yidong's avatar
Chong Yidong committed
364 365 366 367
** Obsolete packages:

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

Glenn Morris's avatar
Glenn Morris committed
368 369 370
+++
*** sup-mouse.el.

Chong Yidong's avatar
Chong Yidong committed
371 372
*** terminal.el is obsolete; use term.el instead.

Michael Albinus's avatar
Michael Albinus committed
373 374
*** xesam.el.

Glenn Morris's avatar
Glenn Morris committed
375 376 377
+++
*** yow.el is obsolete; use fortune.el or cookie1.el instead.

Glenn Morris's avatar
Glenn Morris committed
378 379 380 381
---
*** The Info-edit command is obsolete.  Editing Info nodes by hand
has not been relevant for some time.

382

383
* New Modes and Packages in Emacs 24.4
Ted Zlatanov's avatar
Ted Zlatanov committed
384 385 386 387 388
** New `superword-mode' in subword.el
`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.

389 390 391 392 393 394 395
** New nadvice.el package offering lighter-weight advice facilities.
It is layered as:
- add-function/remove-function which can be used to add/remove code on any
  function-carrying place, such as process-filters or `<foo>-function' hooks.
- advice-add/advice-remove to add/remove a piece of advice on a named function,
  much like `defadvice' does.

Glenn Morris's avatar
Glenn Morris committed
396

397
* Incompatible Lisp Changes in Emacs 24.4
398

399 400 401
** Default process filers and sentinels are not nil any more.
Instead they default to a function which does what the nil value used to do.

402 403 404 405 406
** `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/...

407 408
** Removed inhibit-local-menu-bar-menus.

409 410 411 412
** frame-local variables that affect redisplay do not work any more.
More specifically, the redisplay does not bother to check for a frame-local
value when looking up variables.

413 414 415 416
** nil and "unbound" are indistinguishable in symbol-function.
`symbol-function' never signals `void-function' any more.
`fboundp' returns non-nil if the symbol was `fset' to nil.

417 418
** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
419

420 421 422 423
** `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.

424 425 426 427 428 429
** The return value of `backup-buffer' has changed.
The second argument is no longer an SELinux context, instead it is an
alist of extended attributes as returned by the new function
`file-extended-attributes'.  The attributes can be applied to another
file using `set-file-extended-attributes'.

Glenn Morris's avatar
Glenn Morris committed
430

431
* Lisp Changes in Emacs 24.4
432

433 434 435 436 437
** Obsoleted functions:
*** `dont-compile'
*** `lisp-complete-symbol'
*** `field-complete'
*** `minibuffer-completion-contents'
438 439
*** `isearch-nonincremental-exit-minibuffer'
*** `isearch-filter-visible'
440

441 442 443 444 445 446 447
** `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'.


448 449
** `get-upcase-table' is obsoleted by the new `case-table-get-table'.

450 451 452
** Support for filesystem notifications.
Emacs now supports notifications of filesystem changes, such as
creation, modification, and deletion of files.  This requires the
453 454 455
`glib' API, or the 'inotify' API (on GNU/Linux systems only).  On
MS-Windows systems, this is supported for Windows XP and newer
versions.
456

457 458 459 460 461 462 463 464 465 466 467 468 469 470
** Changes in autorevert.el

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

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

471 472 473 474 475 476 477 478 479 480
** Face changes

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

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

481 482 483
*** New face characteristic (supports :underline (:style wave))
specifies whether or not the terminal can display a wavy line.

484 485 486 487 488 489 490 491 492 493 494 495 496 497 498
** Image API

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

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

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

499
** time-to-seconds is not obsolete any more.
500
** New function special-form-p.
501 502 503
** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
text-property on the first char.

504 505 506
** The `defalias-fset-function' property lets you catch calls to defalias
and redirect them to your own function instead of `fset'.

507
** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
508 509 510 511 512 513 514
When you edit DIR/FILE, Emacs normally creates a symbolic link
DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
is being edited.  Formerly, if there was already a non-symlink file
named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
through DIR/.#FILE.9.  These fallbacks have been removed, so that
Emacs now no longer locks DIR/FILE in that case.

515 516
On file systems that do not support symbolic links, the lock is now a
regular file with contents being what would have been in the symlink.
517

518 519 520 521 522 523 524 525 526 527 528
** The 9th element returned by `file-attributes' is now unspecified.
Formerly, it was t if the file's gid would change if file were deleted
and recreated.  This value has been inaccurate for years on many
platforms, and nobody seems to have noticed or cared.

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

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

529 530 531 532
** The 6th argument to `copy-file' has been renamed to
`preserve-extended-attributes' as it now handles both SELinux context
and ACL entries.

533 534 535
** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4

*** The package descriptor and name of global variables, constants,
Paul Eggert's avatar
Paul Eggert committed
536
and functions should be separated by two hyphens if the symbol is not
537 538
meant to be used by other packages.

Glenn Morris's avatar
Glenn Morris committed
539

540
* Changes in Emacs 24.4 on Non-Free Operating Systems
541

542 543 544 545 546
+++
** The "generate a backtrace on fatal error" feature now works on MS Windows.
The backtrace is written to the 'emacs_backtrace.txt' file in the
directory where Emacs was running.

547 548 549 550 551 552
+++
** The variable `buffer-file-type' is no longer supported.
Setting it has no effect, and %t in the mode-line format is ignored.
Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
modifying it has no effect.

553 554 555 556 557 558 559
---
** Lock files now work on MS-Windows.
This allows to avoid losing your edits if the same file is being
edited in another Emacs session or by another user.  See the node
"Interlocking" in the Emacs User Manual for the details.  To disable
file locking, customize `create-lockfiles' to nil.

Glenn Morris's avatar
Glenn Morris committed
560 561 562 563 564
** Improved fullscreen support on Mac OS X.
Both native (>= OSX 10.7) and "old style" fullscreen are supported.
Customize `ns-use-native-fullscreen' to change style.  For >= 10.7
native is the default.

Glenn Morris's avatar
Glenn Morris committed
565

566
* Installation Changes in Emacs 24.3
567

568
** The default X toolkit is now Gtk+ version 3.
Glenn Morris's avatar
Glenn Morris committed
569 570 571
If you don't pass `--with-x-toolkit' to configure, or if you use
`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
Glenn Morris's avatar
Glenn Morris committed
572
You can explicitly require a specific version by passing
Glenn Morris's avatar
Glenn Morris committed
573
`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
574

575
** New configure option `--enable-link-time-optimization', to utilize
576 577
an appropriate feature provided by GCC since version 4.5.0.

Glenn Morris's avatar
Glenn Morris committed
578 579
** New configure option `--without-all' to disable most of the optional
features (image support, etc.) that are normally enabled by default.
580

Glenn Morris's avatar
Glenn Morris committed
581 582
** New configure option `--enable-gcc-warnings' (for developing/debugging
Emacs).  If building with GCC, this enables compile-time checks that
Glenn Morris's avatar
Glenn Morris committed
583 584 585
warn/give errors about possibly-questionable C code.  On a recent GNU
system there should be no warnings; on older and on non-GNU systems
the results may be useful to developers.
586

Glenn Morris's avatar
Glenn Morris committed
587
** The configure option `--enable-use-lisp-union-type' has been
588
renamed to `--enable-check-lisp-object-type', as the resulting
Glenn Morris's avatar
Glenn Morris committed
589 590 591
Lisp_Object type no longer uses a union to implement the compile time
check that this option enables.

Glenn Morris's avatar
Glenn Morris committed
592
** The configure option `--disable-maintainer-mode' has been removed,
593 594
as it was confusingly-named and rarely useful.

Glenn Morris's avatar
Glenn Morris committed
595 596 597 598 599
** The configure options `--program-prefix', `--program-suffix', and
`--program-transform-name' apply to more than just the installed
binaries.  Now they also affect the man pages, icons, and the
etc/emacs.desktop file; but not the info pages, since this would break
links between the various manuals.
600

Glenn Morris's avatar
Glenn Morris committed
601 602
** You can use `NO_BIN_LINK=t make install' to prevent the installation
overwriting "emacs" in the installation bin/ directory with a link
603
to "emacs-VERSION".
Glenn Morris's avatar
Glenn Morris committed
604

605 606
** Emacs uses libtinfo in preference to libncurses, if available.

607 608 609 610
** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
/usr/pkg/lib to the linker search path.  You must add them yourself if
you want them.

611
** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
Glenn Morris's avatar
Glenn Morris committed
612 613 614
(from the bin and libexec directories, respectively).  The former is
no longer relevant, the latter is replaced by lisp (in vc-sccs.el).

Glenn Morris's avatar
Glenn Morris committed
615

616
* Startup Changes in Emacs 24.3
617 618 619

** Emacs no longer searches for `leim-list.el' files beneath the standard
lisp/ directory.  There should not be any there anyway.  If you have
Glenn Morris's avatar
Glenn Morris committed
620
been adding them there, put them somewhere else; e.g., site-lisp.
621

Glenn Morris's avatar
Glenn Morris committed
622 623
** The `--no-site-lisp' command line option now works for Nextstep builds.

Glenn Morris's avatar
Glenn Morris committed
624

625
* Changes in Emacs 24.3
Glenn Morris's avatar
Glenn Morris committed
626

627
** Help
628

629
*** `C-h f' (`describe-function') can now perform autoloading.
630 631 632 633 634 635 636 637 638
When this command is called for an autoloaded function whose docstring
contains a key substitution construct, that function's library is
automatically loaded, so that the documentation can be shown
correctly.  To disable this, set `help-enable-auto-load' to nil.

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

639
** ImageMagick
640

641 642
*** Images displayed via ImageMagick now support transparency and the
:background image specification property.
643

644
*** When available, ImageMagick support is automatically enabled.
645 646
It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
647
automatically at startup, or when customizing an imagemagick- option.
Glenn Morris's avatar
Glenn Morris committed
648

649
*** Setting `imagemagick-types-inhibit' to t now disables the use of
Glenn Morris's avatar
Glenn Morris committed
650 651
ImageMagick to view images.  (You must call `imagemagick-register-types'
afterwards if you do not use customize to change this.)
Glenn Morris's avatar
Glenn Morris committed
652

653
*** The new variable `imagemagick-enabled-types' also affects which
654 655 656
ImageMagick types are treated as images.  The function
`imagemagick-filter-types' returns the list of types that will be
treated as images.
657

658 659 660 661
** Minibuffer

*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
next and previous path separator, respectively.
662

663 664 665 666 667 668 669 670 671 672 673 674 675 676
*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
in minibuffer prompts.  Just set `minibuffer-eldef-shorten-default'
non-nil before enabling the mode.

** Mode line

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

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

** Server and client
Glenn Morris's avatar
Glenn Morris committed
677

Chong Yidong's avatar
Chong Yidong committed
678 679 680
*** emacsclient now obeys string values for `initial-buffer-choice',
if it is told to open a new frame without specifying any file to visit
or expression to evaluate.
Glenn Morris's avatar
Glenn Morris committed
681

Chong Yidong's avatar
Chong Yidong committed
682 683 684 685 686
*** New option `server-auth-key' specifies a shared server key.

** Emacs now generates backtraces on fatal errors.
On encountering a fatal error, Emacs now outputs a textual description
of the fatal signal, and a short backtrace on platforms like glibc
687
that support backtraces.
688

689 690 691 692 693 694 695 696 697 698
** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
This minor mode replaces `toggle-read-only', which is now obsolete.

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

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

Chong Yidong's avatar
Chong Yidong committed
699 700
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about the bzr revision used.
701

702
** New option `create-lockfiles' specifies usage of lockfiles.
Chong Yidong's avatar
Chong Yidong committed
703 704
It defaults to t.  Changing it to nil inhibits the creation of lock
files (use this with caution).
705

706 707
** New option `enable-remote-dir-locals', if non-nil, allows directory-local
variables on remote hosts.
708

Chong Yidong's avatar
Chong Yidong committed
709 710 711
** The entry for PCL-CVS has been removed from the Tools menu.
The PCL-CVS commands are still available via the keyboard.

712 713 714
** Using "unibyte: t" in Lisp source files is obsolete.
Use "coding: raw-text" instead.

715 716 717 718 719
** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
The previous binding, introduced in Emacs 24.1, was a mistake, because
`C-c LETTER' bindings are reserved for user customizations.

720
** Internationalization
Glenn Morris's avatar
Glenn Morris committed
721

Chong Yidong's avatar
Chong Yidong committed
722
*** New language environment: Persian.
Glenn Morris's avatar
Glenn Morris committed
723

Chong Yidong's avatar
Chong Yidong committed
724 725
*** New input method `vietnamese-vni'.

726
** Nextstep (GNUstep / Mac OS X) port
Glenn Morris's avatar
Glenn Morris committed
727

Glenn Morris's avatar
Glenn Morris committed
728
*** Support for fullscreen and the frame parameter fullscreen.
Glenn Morris's avatar
Glenn Morris committed
729

730 731 732
*** A file dialog is used for open/save operations initiated from the
menu/toolbar.

Glenn Morris's avatar
Glenn Morris committed
733

734
* Editing Changes in Emacs 24.3
735

736
** Search and Replace
737

Chong Yidong's avatar
Chong Yidong committed
738 739 740 741
*** Non-regexp Isearch now performs "lax" space matching.
Each sequence of spaces in the supplied search string may match any
sequence of one or more whitespace characters, as specified by the
variable `search-whitespace-regexp'.  (This variable is also used by a
Glenn Morris's avatar
Glenn Morris committed
742
similar existing feature for regexp Isearch.)
Glenn Morris's avatar
Glenn Morris committed
743

Chong Yidong's avatar
Chong Yidong committed
744 745
*** New Isearch command `M-s SPC' toggles lax space matching.
This applies to both ordinary and regexp Isearch.
Glenn Morris's avatar
Glenn Morris committed
746

Chong Yidong's avatar
Chong Yidong committed
747 748 749
*** New option `replace-lax-whitespace'.
If non-nil, `query-replace' uses flexible whitespace matching too.
The default is nil.
Glenn Morris's avatar
Glenn Morris committed
750

751 752 753 754
*** Global `M-s _' starts a symbol (identifier) incremental search,
and `M-s _' in Isearch toggles symbol search mode.
`M-s c' in Isearch toggles search case-sensitivity.

755
** Navigation commands
756

757 758 759 760 761 762 763 764 765 766
*** New binding `M-g c' for `goto-char'.

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

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

** New option `yank-handled-properties' allows processing of text
properties on yanked text, in ways that are more general than just
removing them (as is done by `yank-excluded-properties').
767 768 769 770 771

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

Chong Yidong's avatar
Chong Yidong committed
772
** `C-u M-=' now counts lines/words/characters in the entire buffer.
773

774 775
** `C-x 8 RET' is now bound to `insert-char', which is now a command.
`ucs-insert' is now an obsolete alias for `insert-char'.
776

777 778 779
** The `z' key no longer has a binding in most special modes.
It used to be bound to `kill-this-buffer', but `z' is too easy to
accidentally type.
Chong Yidong's avatar
Chong Yidong committed
780

781 782
** New command `C-x r M-w' (`copy-rectangle-as-kill').
It copies the region-rectangle as the last rectangle kill.
Chong Yidong's avatar
Chong Yidong committed
783

784
** Registers
Chong Yidong's avatar
Chong Yidong committed
785

Glenn Morris's avatar
Glenn Morris committed
786
*** `C-x r +' is now overloaded to invoke `append-to-register'.
Chong Yidong's avatar
Chong Yidong committed
787 788

*** New option `register-separator' specifies the register containing
Glenn Morris's avatar
Glenn Morris committed
789 790
the text to put between collected texts for use with
M-x append-to-register and M-x prepend-to-register.
791

Glenn Morris's avatar
Glenn Morris committed
792

793
* Changes in Specialized Modes and Packages in Emacs 24.3
Julien Danjou's avatar
Julien Danjou committed
794

795
** Common Lisp emulation (CL)
Chong Yidong's avatar
Chong Yidong committed
796

797
*** CL's main entry is now (require 'cl-lib).
Glenn Morris's avatar
Glenn Morris committed
798 799 800
`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
i.e., all its definitions have the "cl-" prefix (and internal definitions
use the "cl--" prefix).
801

Glenn Morris's avatar
Glenn Morris committed
802 803 804 805 806
If `cl' provided a feature under the name `foo', then `cl-lib'
provides it under the name `cl-foo' instead; with the exceptions of the
few `cl' definitions that had to use `foo*' to avoid conflicts with
pre-existing Elisp entities.  These have been renamed to `cl-foo'
rather than `cl-foo*'.
807

Glenn Morris's avatar
Glenn Morris committed
808
The old `cl' is now deprecated and is mainly just a bunch of aliases that
Glenn Morris's avatar
Glenn Morris committed
809
provide the old, non-prefixed names.  Some exceptions are listed below:
810

811 812
*** `cl-flet' is not like `flet' (which is deprecated).
Instead it obeys the behavior of Common-Lisp's `flet'.
Glenn Morris's avatar
Glenn Morris committed
813 814
In particular, in cl-flet function definitions are lexically scoped,
whereas in flet the scoping is dynamic.
815 816

*** `cl-labels' is slightly different from `labels'.
Glenn Morris's avatar
Glenn Morris committed
817 818 819 820
The difference is that it relies on the `lexical-binding' machinery
(as opposed to the `lexical-let' machinery used previously) to capture
definitions in closures, so such closures will only work if `lexical-binding'
is in use.
821

Glenn Morris's avatar
Glenn Morris committed
822
*** `cl-letf' is not exactly like `letf'.
823 824
The only difference is in details that relate to some deprecated usage
of `symbol-function' in place forms.
Glenn Morris's avatar
Glenn Morris committed
825

826
*** `progv' was rewritten to use the `let' machinery.
Glenn Morris's avatar
Glenn Morris committed
827 828
A side effect is that variables without corresponding values are bound
to nil rather than being made unbound.
829

Glenn Morris's avatar
Glenn Morris committed
830 831 832
*** The following methods of extending `setf' are obsolete
(use features from gv.el instead):
`define-modify-macro' (use `gv-letplace')
Glenn Morris's avatar
Glenn Morris committed
833 834
`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
Glenn Morris's avatar
Glenn Morris committed
835
`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
Glenn Morris's avatar
Glenn Morris committed
836

837
** Diff mode
Chong Yidong's avatar
Chong Yidong committed
838

839 840 841 842 843
*** Changes are now highlighted using the same color scheme as in
modern VCSes.  Deletions are displayed in red (new faces
`diff-refine-removed' and `smerge-refined-removed', and new definition
of `diff-removed'), insertions in green (new faces `diff-refine-added'
and `smerge-refined-added', and new definition of `diff-added').
Chong Yidong's avatar
Chong Yidong committed
844

845 846 847
*** The variable `diff-use-changed-face' defines whether to use the
face `diff-changed', or `diff-removed' and `diff-added' to highlight
changes in context diffs.
Glenn Morris's avatar
Glenn Morris committed
848

849 850
*** The new command `diff-delete-trailing-whitespace' removes trailing
whitespace introduced by a diff.
Chong Yidong's avatar
Chong Yidong committed
851

852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871
** Ediff now uses the same color scheme as Diff mode.

** Python mode

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

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

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

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

**** `python-honour-comment-indentation':
872
Comments are always considered as indentation markers.
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907

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

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

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

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

*** Some commands have been replaced (old -> new):
**** python-insert-class -> python-skeleton-class
**** python-insert-def -> python-skeleton-def
**** python-insert-for -> python-skeleton-for
**** python-insert-if -> python-skeleton-if
**** python-insert-try/except -> python-skeleton-try
**** python-insert-try/finally -> python-skeleton-try
**** python-insert-while -> python-skeleton-while
**** python-find-function -> python-nav-jump-to-defun
**** python-next-statement -> python-nav-forward-sentence
**** python-previous-statement -> python-nav-backward-sentence
**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
**** python-end-of-defun-function -> python-nav-end-of-defun
**** python-send-buffer -> python-shell-send-buffer
**** python-send-defun -> python-shell-send-defun
**** python-send-region -> python-shell-send-region
**** python-send-region-and-go -> emulate with python-shell-send-region
and python-shell-switch-to-shell
**** python-send-string -> python-shell-send-string
**** python-switch-to-python -> python-shell-switch-to-shell
**** python-describe-symbol -> python-eldoc-at-point
Chong Yidong's avatar
Chong Yidong committed
908

Chong Yidong's avatar
Chong Yidong committed
909 910 911 912 913 914 915 916 917
** D-Bus

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

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

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

Glenn Morris's avatar
Glenn Morris committed
918 919
*** The function `dbus-call-method' is now non-blocking.
It can be interrupted by `C-g'.  `dbus-call-method-non-blocking' is obsolete.
Chong Yidong's avatar
Chong Yidong committed
920

Glenn Morris's avatar
Glenn Morris committed
921
*** Signals can also be sent as unicast messages.
Chong Yidong's avatar
Chong Yidong committed
922 923

*** The argument list of `dbus-register-signal' has been extended,
924
according to the new match rule types of D-Bus.
Chong Yidong's avatar
Chong Yidong committed
925 926 927 928 929

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

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

930 931
** `desktop-path' no longer includes the "." directory.
Desktop files are now located in ~/.emacs.d by default.
Chong Yidong's avatar
Chong Yidong committed
932 933

** Dired
Glenn Morris's avatar
Glenn Morris committed
934

Chong Yidong's avatar
Chong Yidong committed
935 936 937
*** `dired-do-async-shell-command' executes each file sequentially
if the command ends in `;' (when operating on multiple files).
Otherwise, it executes the command on each file in parallel.
Glenn Morris's avatar
Glenn Morris committed
938

Glenn Morris's avatar
Glenn Morris committed
939 940
*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
`dired-do-chown', and `dired-do-touch' yanks the attributes of the
Chong Yidong's avatar
Chong Yidong committed
941
file at point.
Glenn Morris's avatar
Glenn Morris committed
942

Chong Yidong's avatar
Chong Yidong committed
943
*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
Glenn Morris's avatar
Glenn Morris committed
944
`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
Chong Yidong's avatar
Chong Yidong committed
945
mark/unmark/flag all files in the active region.
Glenn Morris's avatar
Glenn Morris committed
946

Chong Yidong's avatar
Chong Yidong committed
947 948 949
*** The minibuffer default for `=' (`dired-diff) has changed.
It is now the backup file for the file at point, if one exists.
In Transient Mark mode the default is the file at the active mark.
Glenn Morris's avatar
Glenn Morris committed
950

Chong Yidong's avatar
Chong Yidong committed
951 952 953
*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
The global binding for `M-=', `count-words-region' is in effect.

Glenn Morris's avatar
Glenn Morris committed
954 955
** ERC

956 957
*** New module "notifications", which can send a notification when you
receive a private message or your nickname is mentioned.
Glenn Morris's avatar
Glenn Morris committed
958 959 960

*** ERC will look up server/channel names via auth-source and use any
channel keys found.
Chong Yidong's avatar
Chong Yidong committed
961

Glenn Morris's avatar
Glenn Morris committed
962 963
*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
only applies to messages sent by lurkers.
964

965
** reStructuredText mode
Chong Yidong's avatar
Chong Yidong committed
966

967 968 969
*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
fontification, comment handling, and customization have all been revised
and improved.
Chong Yidong's avatar
Chong Yidong committed
970

971
*** Support for `imenu' and `which-function-mode'.
Chong Yidong's avatar
Chong Yidong committed
972

973 974
*** The reStructuredText syntax is more closely covered.
Sphinx support has been improved.
Chong Yidong's avatar
Chong Yidong committed
975

976
*** `rst-insert-list' inserts new list or continues existing lists.
Chong Yidong's avatar
Chong Yidong committed
977

978
*** A negative prefix argument always works for `rst-adjust'.
Chong Yidong's avatar
Chong Yidong committed
979

980
*** The window configuration is reset after displaying a TOC.
981

982
*** The constant `rst-version' describes the rst.el package version.
Glenn Morris's avatar
Glenn Morris committed
983

Glenn Morris's avatar
Glenn Morris committed
984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
** Ruby mode

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

*** Improved syntax highlighting and indentation.

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

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

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

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

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

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

1007
** Shell Script mode
1008

1009
*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
1010

1011
*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
1012

1013
*** `sh-use-smie' lets you choose a new indentation and navigation code.
1014

1015
** VHDL mode
1016

1017
*** The free software compiler GHDL is supported (and now the default).
1018

1019
*** Support for the VHDL-AMS packages has been added/updated.
1020

1021
*** Updated to the 2002 revision of the VHDL standard.
1022

1023
*** Accepts \r and \f as whitespace.
1024

1025
** Apropos
1026

1027 1028 1029
*** The faces used by Apropos are now directly customizable.
These faces are named `apropos-symbol', `apropos-keybinding', and so on;
see the `apropos' Custom group for details.
1030

1031 1032
*** The old options whose values specified faces to use have been removed
(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).
1033

1034
** Buffer Menu
1035

1036
*** This package has been rewritten to use Tabulated List mode.
1037

1038 1039
*** Option `Buffer-menu-buffer+size-width' is now obsolete.
Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
1040

1041