NEWS 87.6 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

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

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

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

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

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

Glenn Morris's avatar
Glenn Morris committed
17 18 19 20 21 22 23
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.


24
* Installation Changes in Emacs 24.3
25

Glenn Morris's avatar
Glenn Morris committed
26 27 28 29 30 31 32 33 34
---
** The default toolkit has been changed to Gtk+ version 3.
If you don't pass --with-x-toolkit to configure or if you pass
--with-x-toolkit=gtk or --with-x-toolkit=yes, configure will try to build
with Gtk+ version 3, and if that fails, try Gtk+ version 2.
You can explicitly require a specific version by passing
--with-x-toolkit=gtk2 or --with-x-toolkit=gtk3 to configure.

---
Paul Eggert's avatar
Paul Eggert committed
35
** New configure option '--without-all' to disable additional features.
36 37
This disables most of the features that are normally enabled by default.

Glenn Morris's avatar
Glenn Morris committed
38
---
39 40 41
** New configure option '--enable-link-time-optimization' to utilize
an appropriate feature provided by GCC since version 4.5.0.

Glenn Morris's avatar
Glenn Morris committed
42
---
43 44 45 46
** New configure option '--enable-gcc-warnings', intended for developers.
If building with GCC, this enables compile-time checks that warn about
possibly-questionable C code.  On a recent GNU system there should be
no warnings; on older and on non-GNU systems the generated warnings
Paul Eggert's avatar
Paul Eggert committed
47
may be useful.
48

Glenn Morris's avatar
Glenn Morris committed
49 50 51 52 53 54 55
---
** The configuration option '--enable-use-lisp-union-type' has been
renamed to '--enable-check-lisp-object-type', as the resulting
Lisp_Object type no longer uses a union to implement the compile time
check that this option enables.

---
56 57 58
** The configure option '--disable-maintainer-mode' has been removed,
as it was confusingly-named and rarely useful.

59 60 61 62 63
---
** You can use `NO_BIN_LINK=t make install' to prevent the installation
overwriting "emacs" in the installation bin/ directory with a link
to emacs-VERSION.

64 65 66
---
** Emacs uses libtinfo in preference to libncurses, if available.

67 68 69 70 71
---
** 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.

72 73 74 75
---
** On Mac OS X, configure no longer automatically adds the Fink /sw
directories to the search path.  You must add them yourself if you want them.

Glenn Morris's avatar
Glenn Morris committed
76 77 78 79 80
---
** The standalone scripts rcs-checkin and vcdiff have been removed
(from the bin and libexec directories, respectively).  The former is
no longer relevant, the latter is replaced by lisp (in vc-sccs.el).

Glenn Morris's avatar
Glenn Morris committed
81

82
* Startup Changes in Emacs 24.3
83

84
+++
85 86 87 88
** Emacs no longer searches for `leim-list.el' files beneath the standard
lisp/ directory.  There should not be any there anyway.  If you have
been adding them there, put them somewhere else, eg site-lisp.

Glenn Morris's avatar
Glenn Morris committed
89 90 91
---
** The `--no-site-lisp' command line option now works for Nextstep builds.

Glenn Morris's avatar
Glenn Morris committed
92

93
* Changes in Emacs 24.3
Glenn Morris's avatar
Glenn Morris committed
94

95 96 97
** minibuffer-electric-default-mode can rewrite (default ...) to [...].
Just set minibuffer-eldef-shorten-default to t before enabling the mode.

98
+++
Chong Yidong's avatar
Chong Yidong committed
99 100 101 102
** 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.

103
---
Chong Yidong's avatar
Chong Yidong committed
104 105 106 107
** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
next and previous path separator, respectively.

** Mode line changes
Chong Yidong's avatar
Chong Yidong committed
108
---
Chong Yidong's avatar
Chong Yidong committed
109 110 111 112 113 114
*** 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
invokes `set-buffer-file-coding-system'.
Chong Yidong's avatar
Chong Yidong committed
115

116 117
** Help changes

118
+++
119 120 121 122 123 124
*** `C-h f' (describe-function) can now perform autoloading.
When this command is called for an autoloaded function whose docstring
contains a key substitution construct, that function's library is
automatically loaded, so that the documentation can be shown
correctly.  To disable this, set `help-enable-auto-load' to nil.

125
---
126 127 128 129
*** `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).

130 131 132
** ImageMagick support, if available, is automatically enabled.
It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
133 134
automatically at startup, or when customizing a relevant imagemagick-
option.
135 136

*** Setting `imagemagick-types-inhibit' to t now disables the use of
137 138
ImageMagick to view images.  You must call imagemagick-register-types
afterwards if you do not use customize to change this.
139

140
*** The new variable `imagemagick-enabled-types' also affects which
141 142 143
ImageMagick types are treated as images.  The function
`imagemagick-filter-types' returns the list of types that will be
treated as images.
144

145 146
*** Images displayed via ImageMagick now support transparency and the
:background image spec property.
147

Chong Yidong's avatar
Chong Yidong committed
148
** Server and client changes
149
+++
Chong Yidong's avatar
Chong Yidong committed
150 151 152
*** 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.
153
---
Chong Yidong's avatar
Chong Yidong committed
154
*** New option `server-auth-key' specifies a shared server key.
Glenn Morris's avatar
Glenn Morris committed
155

Chong Yidong's avatar
Chong Yidong committed
156 157 158
** 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
159
+++
Chong Yidong's avatar
Chong Yidong committed
160 161 162 163 164 165 166
** `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.

** 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
that support backtraces.
167

168
---
Chong Yidong's avatar
Chong Yidong committed
169 170
** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about the bzr revision used.
171

172
+++
Chong Yidong's avatar
Chong Yidong committed
173 174 175
** New variable `create-lockfiles' specifies usage of lockfiles.
It defaults to t.  Changing it to nil inhibits the creation of lock
files (use this with caution).
176

177
+++
178
** Using "unibyte: t" in Lisp source files is obsolete.
Glenn Morris's avatar
Glenn Morris committed
179
Use "coding: raw-text" instead.
180

181 182 183 184
+++
** Setting `enable-remote-dir-locals' to non-nil allows directory
local variables on remote hosts.

Chong Yidong's avatar
Chong Yidong committed
185
---
Chong Yidong's avatar
Chong Yidong committed
186 187 188
** The entry for PCL-CVS has been removed from the Tools menu.
The PCL-CVS commands are still available via the keyboard.

Chong Yidong's avatar
Chong Yidong committed
189 190 191 192 193 194
** Internationalization changes
---
*** New language environment: Persian.
---
*** New input method `vietnamese-vni'.

Jan Djärv's avatar
Jan Djärv committed
195 196
** NextStep/OSX port changes.
---
197 198
*** OSX 10.4 or newer is required to build Emacs.
---
Jan Djärv's avatar
Jan Djärv committed
199 200 201
*** Fullscreen and frame parameter fullscreen is supported.
---
*** A file dialog is used when open/saved is done from the menu/toolbar.
Glenn Morris's avatar
Glenn Morris committed
202

203
* Editing Changes in Emacs 24.3
204

205
** Navigation command changes
206
+++
207
*** New binding `M-g c' for `goto-char'.
208
+++
209
*** New binding `M-g TAB' for `move-to-column'.
210
+++
211 212 213
*** `M-g TAB' (`move-to-column') prompts for a column number if called
interactively with no prefix arg.  Previously, it moved to column 1.

Chong Yidong's avatar
Chong Yidong committed
214
** Search and Replace changes
215
+++
Chong Yidong's avatar
Chong Yidong committed
216 217 218 219 220
*** Non-regexp Isearch now performs "lax" space matching.
Each sequence of spaces in the supplied search string may match any
sequence of one or more whitespace characters, as specified by the
variable `search-whitespace-regexp'.  (This variable is also used by a
similar existing feature for regexp Isearch).
221
+++
Chong Yidong's avatar
Chong Yidong committed
222 223
*** New Isearch command `M-s SPC' toggles lax space matching.
This applies to both ordinary and regexp Isearch.
224
+++
Chong Yidong's avatar
Chong Yidong committed
225 226 227
*** New option `replace-lax-whitespace'.
If non-nil, `query-replace' uses flexible whitespace matching too.
The default is nil.
228 229 230 231 232

*** 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.

233 234 235 236 237 238 239 240 241 242 243 244 245 246
+++
** `C-x 8 RET' is now bound to `insert-char', which is now a command.
`ucs-insert' is now an obsolete alias for `insert-char'.

---
** The `z' key no longer has a binding in most special modes.
It used to be bound to `kill-this-buffer', but `z' is too easy to
accidentally type.

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

Chong Yidong's avatar
Chong Yidong committed
247 248 249 250 251 252 253
** Register changes
+++
*** `C-x r +' is now overloaded to invoke `append-to-register.
+++
*** New option `register-separator' specifies the register containing
the text to put between collected texts for use with M-x
append-to-register and M-x prepend-to-register.
254

255
+++
Chong Yidong's avatar
Chong Yidong committed
256
** `C-u M-=' now counts lines/words/characters in the entire buffer.
257

258
+++
259 260 261
** 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
262 263 264
** New option `yank-handled-properties' allows processing of text
properties on yanked text, in more ways that are more general than
just removing them, as done by `yank-excluded-properties'.
265

Glenn Morris's avatar
Glenn Morris committed
266

267
* Changes in Specialized Modes and Packages in Emacs 24.3
268

Chong Yidong's avatar
Chong Yidong committed
269
** Apropos
270
---
Chong Yidong's avatar
Chong Yidong committed
271 272 273
*** 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.
274 275
---
*** The old options whose values specified faces to use were removed
Chong Yidong's avatar
Chong Yidong committed
276 277 278 279
(i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.).

** Buffer Menu
This package has been rewritten to use Tabulated List mode.
280
---
Chong Yidong's avatar
Chong Yidong committed
281 282 283 284 285
*** Option `Buffer-menu-buffer+size-width' is now obsolete.
Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.

** Calendar

Glenn Morris's avatar
Glenn Morris committed
286
+++
Chong Yidong's avatar
Chong Yidong committed
287 288 289
*** You can customize the header text that appears above each calendar month.
See the variable `calendar-month-header'.

290 291 292
+++
*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.

Glenn Morris's avatar
Glenn Morris committed
293
+++
Chong Yidong's avatar
Chong Yidong committed
294
*** The calendars produced by cal-html include holidays.
Glenn Morris's avatar
Glenn Morris committed
295
Customize `cal-html-holidays' to change this.
Julien Danjou's avatar
Julien Danjou committed
296

297
** CL
Chong Yidong's avatar
Chong Yidong committed
298

299
*** CL's main entry is now (require 'cl-lib).
300
`cl-lib' is like the old `cl' except that it uses the namespace cleanly,
301 302
i.e. all its definitions have the "cl-" prefix (and internal definitions use
the "cl--" prefix).
303 304 305 306 307 308

If `cl' provided a feature under the name `foo', then `cl-lib' provides it
under the name `cl-foo' instead, with the exceptions of the few definitions
that had to use `foo*' to avoid conflicts with pre-existing Elisp entities,
which have not been renamed to `cl-foo*' but just `cl-foo'.

309
The old `cl' is now deprecated and is just a bunch of aliases that
310 311
provide the old non-prefixed names.

312 313 314 315 316 317 318 319 320 321 322 323
*** `cl-flet' is not like `flet' (which is deprecated).
Instead it obeys the behavior of Common-Lisp's `flet'.

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

*** `progv' was rewritten to use the `let' machinery.
A side effect is that vars without corresponding value are bound to nil
rather than making them unbound.

Chong Yidong's avatar
Chong Yidong committed
324 325 326 327 328 329 330 331 332 333 334 335
** Compilation mode

*** New option `compilation-always-kill'.

** Customize

*** `custom-reset-button-menu' now defaults to t.

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

Chong Yidong's avatar
Chong Yidong committed
336 337 338 339 340
** Desktop

*** `desktop-path' no longer includes the "." directory.  Desktop
files are now located in ~/.emacs.d by default.

Chong Yidong's avatar
Chong Yidong committed
341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446
** D-Bus

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

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

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

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

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

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

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

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

** Diff mode

*** 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').

*** 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.

*** The new command `diff-remove-trailing-whitespace' fixes trailing
whitespace problems introduced by the diff.

** Dired

*** `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.

*** Typing M-n in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
`dired-do-chown', `dired-do-touch' pulls the file attributes of the
file at point.

*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
`DEL' (`dired-unmark-backward'), `d' (`dired-flag-file-deletion')
mark/unmark/flag all files in the active region.

*** 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.

*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
The global binding for `M-=', `count-words-region' is in effect.

** Ediff now uses the same color scheme as Diff mode.

** erc will look up server/channel names via auth-source and use the
channel keys found, if any.

** Flymake uses fringe bitmaps to indicate errors and warnings.
See flymake-fringe-indicator-position, flymake-error-bitmap and
flymake-warning-bitmap.

** Follow mode

*** The obsolete variable `follow-mode-off-hook' has been removed.

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

** FFAP

*** The option `ffap-url-unwrap-remote' can now be a list of strings,
specifying URL types which should be converted to remote file names at
the FFAP prompt.  The default is now '("ftp").

** Ibuffer

*** New `derived-mode' filter, bound to `/ M'.
The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.

** Mouse Avoidance mode

The new variable `mouse-avoidance-banish-position' can now be used to
customize Mouse Avoidance mode further.

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

** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
closing brackets to be aligned with the line of the opening bracket.

447
** In Proced mode, new command `proced-renice' renices marked processes.
448

Glenn Morris's avatar
Glenn Morris committed
449 450 451
** Python mode

A new version of python.el, which provides several new features, including:
452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503
per-buffer shells, better indentation, Python 3 support, and improved
shell-interaction compatible with iPython (and virtually any other
text based shell).

*** Some user options have been replaced/renamed:
Old defcustom:                | New defcustom:
python-indent                 | python-indent-offset
python-guess-indent           | python-indent-guess-indent-offset
python-pdbtrack-do-tracking-p | python-pdbtrack-activate
python-use-skeletons          | python-skeleton-autoinsert

*** Some user options have been removed:

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

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

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

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

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

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

*** Some commands have been replaced:
Old command               | New command
python-insert-class       | python-skeleton-class
python-insert-def         | python-skeleton-def
python-insert-for         | python-skeleton-for
python-insert-if          | python-skeleton-if
python-insert-try/except  | python-skeleton-try
python-insert-try/finally | python-skeleton-try
python-insert-while       | python-skeleton-while
python-find-function      | python-nav-jump-to-defun
python-next-statement     | python-nav-forward-sentence
python-previous-statement | python-nav-backward-sentence
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

504 505
** reStructuredText mode

506 507
*** Rebind nearly all keys making room for more keys and complying
better to usage in other modes.  Describe bindings with C-c C-h.
508

509 510
*** Major revision of indentation working very similar to other
modes.  TAB is your friend.
511

512 513
*** Major revision of filling working fine with most of
reStructuredText syntax.  Support auto-filling.
514 515 516

*** Major revision of comment handling.

517
*** Major revision of fontification working with `jit-lock-mode'.
518

519 520
*** Cover reStructuredText syntax more closely.  Improve
the experience for Sphinx users.
521

522
*** `rst-insert-list' inserts new list or continues existing lists.
523

524
*** Extend correct and improve customization.
525 526 527

*** Negative prefix argument always works for `rst-adjust'.

528
*** Reset window configuration after displaying TOC.
529

530
*** Package version in `rst-version'.
531

532 533
*** Support `imenu' and `which-func'.

Chong Yidong's avatar
Chong Yidong committed
534
** SH Script mode
535

Chong Yidong's avatar
Chong Yidong committed
536
*** Pairing of parens/quotes uses electric-pair-mode instead of skeleton-pair.
537

Chong Yidong's avatar
Chong Yidong committed
538
*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
Chong Yidong's avatar
Chong Yidong committed
539

Chong Yidong's avatar
Chong Yidong committed
540
*** `sh-use-smie' lets you choose a new indentation and navigation code.
Chong Yidong's avatar
Chong Yidong committed
541

542 543 544 545 546 547
** Shell

*** New option `async-shell-command-buffer' specifies what buffer to use
for a new asynchronous shell command when the default output buffer
`*Async Shell Command*' is already taken by another running command.

Chong Yidong's avatar
Chong Yidong committed
548
** SQL Mode
549

Chong Yidong's avatar
Chong Yidong committed
550
*** DB2 added `sql-db2-escape-newlines'
551

Chong Yidong's avatar
Chong Yidong committed
552 553 554
If non-nil, newlines sent to the command interpreter will be escaped
by a backslash.  The default does not escape the newlines and assumes
that the sql statement will be terminated by a semicolon.
555

Chong Yidong's avatar
Chong Yidong committed
556
** Tabulated List and packages derived from it
557

Chong Yidong's avatar
Chong Yidong committed
558 559
*** New command `tabulated-list-sort', bound to `S', sorts the column
at point, or the Nth column if a numeric prefix argument is given.
560

Chong Yidong's avatar
Chong Yidong committed
561
** Term
Glenn Morris's avatar
Glenn Morris committed
562

Chong Yidong's avatar
Chong Yidong committed
563 564 565 566 567 568
The variables `term-default-fg-color' and `term-default-bg-color' are
now deprecated in favor of the `term-face' face, that you can
customize.  Also, it is now possible to customize how are displayed the
ANSI terminal colors and styles by customizing the corresponding
`term-color-<COLOR>', `term-color-underline' and `term-color-bold'
faces.
569

Michael Albinus's avatar
Michael Albinus committed
570 571 572 573 574 575 576
** Tramp
+++
*** The syntax has been extended in order to allow ad-hoc proxy
definitions.  See the manual for details.
+++
*** Remote processes are now supported also on remote Windows host.

577 578 579 580 581 582 583 584 585 586 587 588
** URL

*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
Previously, this slot stored semicolon-separated attribute-value pairs
appended to some imap URLs, but this is not compatible with RFC 3986.
So now the `filename' slot stores the entire path and query components
and the `attributes' slot is always nil.

*** New function `url-encode-url' for encoding a URI string.
The `url-retrieve' function now uses this to encode its URL argument,
in case that is not properly encoded.

Chong Yidong's avatar
Chong Yidong committed
589 590 591 592 593 594 595 596 597 598 599 600
** VHDL mode

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

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

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

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

** which-function-mode now applies to all applicable major modes by default.

601 602 603
---
** winner-mode-hook now runs when the mode is disabled, as well as when it is
enabled.
Chong Yidong's avatar
Chong Yidong committed
604 605 606 607

** FIXME something happened to ses.el, 2012-04-17.


Glenn Morris's avatar
Glenn Morris committed
608
** Obsolete packages:
609
+++
610 611 612 613
*** assoc.el
In most cases, assoc+member+push+delq work just as well.
And in any case it's just a terrible package: ugly semantics, terrible
inefficiency, and not namespace-clean.
614
---
615
*** bruce.el
616
---
Glenn Morris's avatar
Glenn Morris committed
617
*** ledit.el
618
---
Glenn Morris's avatar
Glenn Morris committed
619
*** mailpost.el
620
+++
621
*** mouse-sel.el
622
---
623
*** patcomp.el
624
+++
625 626
*** cust-print.el

Glenn Morris's avatar
Glenn Morris committed
627

628
* New Modes and Packages in Emacs 24.3
Glenn Morris's avatar
Glenn Morris committed
629

630
* Incompatible Lisp Changes in Emacs 24.3
631

632 633
** set-buffer-multibyte now signals an error in narrowed buffers.

634
+++
635 636 637 638 639
** (random) by default now returns a different random sequence in
every Emacs run.  Use (random S), where S is a string, to set the
random seed to a value based on S, in order to get a repeatable
sequence in later calls.

640
---
641 642 643 644
** The function `x-select-font' can return a font spec, instead of a
font name as a string.  Whether it returns a font spec or a font name
depends on the graphical library.

645 646 647 648
** If the NEWTEXT arg to `replace-match' contains a substring "\?",
that substring is inserted literally even if the LITERAL arg is
non-nil, instead of causing an error to be signaled.

649 650 651 652 653 654
+++
** Docstrings starting with `*' no longer indicate user options.
Only variables defined using `defcustom' are considered user options.
The function `user-variable-p' is now an obsolete alias for
`custom-variable-p'.

655 656 657 658 659 660
+++
** The return values of `defalias', `defun' and `defmacro' have changed,
and are now undefined.  For backwards compatibility, defun and
defmacro currently return the name of the newly defined function/macro
but this should not be relied upon.

661
---
662 663 664
** `face-spec-set' no longer sets frame-specific attributes when the
third argument is a frame (that usage was obsolete since Emacs 22.2).

665 666 667 668 669
+++
** The arguments of `dbus-register-signal' are no longer just strings,
but keywords or keyword-string pairs.  The old argument list will
still be supported for Emacs 24.x.

670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698
** Spelling changes.
Some Lisp symbols have been renamed to avoid problems with spelling
that is incorrect or inconsistent with how Emacs normally spells a word.

*** Renamed functions

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

*** Renamed hooks
The old hooks are still supported for backward compatibility, but they
are deprecated and will be removed eventually.

**** input-method-inactivate-hook -> input-method-deactivate-hook
**** robin-inactivate-hook -> robin-deactivate-hook
**** quail-inactivate-hook -> quail-deactivate-hook

*** Renamed Lisp variables

**** follow-deactive-menu -> follow-inactive-menu
**** inactivate-current-input-method-function ->
     deactivate-current-input-method-function

699
** Some obsolete functions, variables, and faces were removed:
700 701 702

*** `facemenu-unlisted-faces'
*** `rmail-decode-mime-charset'
Stefan Monnier's avatar
Stefan Monnier committed
703
*** `last-input-char', `last-command-char', `unread-command-char'.
704 705 706
*** `iswitchb-read-buffer'
*** `sc-version', `sc-submit-bug-report'
*** `set-char-table-default'
707
*** `string-to-sequence' (use `string-to-list' or `string-to-vector').
708
*** `compile-internal'
709
*** `mode-line-inverse-video'
710 711 712 713 714 715 716 717
*** `cvs-commit-buffer-require-final-newline'
(use `'log-edit-require-final-newline'instead)
*** `cvs-changelog-full-paragraphs'
(use `log-edit-changelog-full-paragraphs' instead)
*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
*** `vc-master-templates' (use `vc-handled-backends' instead)
*** `vc-checkout-carefully'
718
*** `modeline'
719

Glenn Morris's avatar
Glenn Morris committed
720

721
* Lisp changes in Emacs 24.3
722

Stefan Monnier's avatar
Stefan Monnier committed
723 724 725 726
** New sampling-based Elisp profiler.
Try M-x profiler-start ... M-x profiler-stop; and then M-x profiler-report.
The sampling rate can be based on CPU time (only supported on some
systems), or based on memory allocations.
727

728
** CL-style generalized variables are now in core Elisp.
Chong Yidong's avatar
Chong Yidong committed
729
`setf' is autoloaded; `push' and `pop' accept generalized variables.
730

731 732 733
** `defun' also accepts a (declare DECLS) form, like `defmacro'.
The interpretation of the DECLS is determined by `defun-declarations-alist'.

Chong Yidong's avatar
Chong Yidong committed
734
** Completion
735

Chong Yidong's avatar
Chong Yidong committed
736 737
*** New function `completion-table-with-quoting' to handle completion
in the presence of quoting, such as file completion in shell buffers.
738

Chong Yidong's avatar
Chong Yidong committed
739 740 741 742
*** New function `completion-table-subvert' to use an existing completion
table, but with a different prefix.

** Debugger changes
743

Chong Yidong's avatar
Chong Yidong committed
744 745
*** New error type and new function `user-error'.
These do not trigger the debugger.
746

747 748 749 750 751 752 753 754
*** New option `debugger-bury-or-kill'.

*** Set `debug-on-message' to enter the debugger when a certain
message is displayed in the echo area.  This can be useful when trying
to work out which code is doing something.

*** New var `inhibit-debugger', automatically set to prevent accidental
recursive invocations.
755

Chong Yidong's avatar
Chong Yidong committed
756 757 758 759 760 761 762
** Minibuffer

*** `read-regexp' has a new argument HISTORY; the first argument PROMPT
of `read-regexp' accepts a string ending with a colon and space, and its
second argument DEFAULTS can be a list of strings accessible via M-n
in the minibuffer ahead of other hard-coded useful regexp-related values.
More commands use `read-regexp' now to read their regexp arguments.
763

764 765 766
** Window changes

*** The functions get-lru-window, get-mru-window and get-largest-window
Paul Eggert's avatar
Paul Eggert committed
767
now accept a third argument to avoid choosing the selected window.
768

769 770
*** Additional values recognized for option `window-combination-limit'.

771 772
*** New macro `with-temp-buffer-window'.

773 774
*** `temp-buffer-resize-mode' no longer resizes windows that have been
reused.
775

776 777
*** New function `fit-frame-to-buffer' and new options
`fit-frame-to-buffer' and `fit-frame-to-buffer-bottom-margin'.
778

779 780
*** New display action functions `display-buffer-below-selected',
`display-buffer-at-bottom' and `display-buffer-in-previous-window'.
781

782 783 784
*** New display action alist entry `inhibit-switch-frame', if non-nil,
tells display action functions to avoid changing which frame is
selected.
785

786 787
*** New display action alist entry `pop-up-frame-parameters', if
non-nil, specifies frame parameters to give any newly-created frame.
788

789 790
*** New display action alist entry `previous-window', if non-nil,
specifies window to reuse in `display-buffer-in-previous-window'.
791

792 793 794
*** New display action alist entries `window-height' and `window-width'
to specify size of new window created by `display-buffer'.

795 796 797
*** The following variables are obsolete, as they can be replaced by
appropriate entries in the `display-buffer-alist' function introduced
in Emacs 24.1:
798
+++
799 800 801 802 803
**** `display-buffer-reuse-frames'
**** `special-display-regexps'
**** `special-display-frame-alist'
**** `special-display-buffer-names'
**** `special-display-function'
804
**** `display-buffer-function'
805
**** `dired-shrink-to-fit'
806

807
** Time
808
---
809 810 811
*** `current-time-string' no longer requires that its argument's year
must be in the range 1000..9999.  It now works with any year supported
by the underlying C implementation.
812
---
Chong Yidong's avatar
Chong Yidong committed
813 814 815 816 817 818
*** `current-time' now returns extended-format time stamps
(HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
PSEC is typically a multiple of 1000 on current machines.  Other
functions that use this format, such as file-attributes and
format-time-string, have been changed accordingly.  Old-format time
stamps are still accepted.
819
---
Chong Yidong's avatar
Chong Yidong committed
820 821 822 823 824
*** The format of timers in timer-list and timer-idle-list is now
[TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
The PSECS slot is new, and uses picosecond resolution.  It can be
accessed via the new timer--psecs accessor.

825
+++
Chong Yidong's avatar
Chong Yidong committed
826 827 828 829 830 831 832 833 834 835 836
** Floating point functions now always return special values like NaN,
instead of signaling errors, if given invalid args, e.g. (log -1.0).
Previously, they returned NaNs on some platforms but signaled errors
on others.  The affected functions are acos, asin, tan, exp, expt,
log, log10, sqrt, and mod.

** Interpreted files are eagerly macro-expanded during load.
This can significantly speed up execution of non-byte-compiled code,
but can also bump into harmless and previously unnoticed cyclic
dependencies.  These should not be fatal: they will simply cause the
macro-calls to be left for later expansion (as before), but will also
837 838
result in a warning ("Eager macro-expansion skipped due to cycle")
describing the cycle.
Chong Yidong's avatar
Chong Yidong committed
839 840 841 842 843

** Misc new functions:

*** `autoloadp'
*** `autoload-do-load'.
844
+++
Chong Yidong's avatar
Chong Yidong committed
845 846 847
*** `buffer-narrowed-p' tests if the buffer is narrowed.
*** `file-name-base' returns a file name sans directory and extension.
*** `function-get' fetches a function property, following aliases.
848
+++
Chong Yidong's avatar
Chong Yidong committed
849 850
*** `posnp' tests if an object is a `posn'.
*** `set-temporary-overlay-map' sets up a temporary overlay map.
851
+++
Chong Yidong's avatar
Chong Yidong committed
852
*** `system-users' returns the user names on the system.
853
+++
Chong Yidong's avatar
Chong Yidong committed
854 855
*** `system-groups' returns the group names on the system.
*** `tty-top-frame' returns the topmost frame of a text terminal.
856

Chong Yidong's avatar
Chong Yidong committed
857 858
** New macros `setq-local' and `defvar-local'.

859
** New fringe bitmap `exclamation-mark'.
Chong Yidong's avatar
Chong Yidong committed
860 861 862

** Face underlining can now use a wave.
See the "Face Attributes" section of the Elisp manual.
863

Chong Yidong's avatar
Chong Yidong committed
864
** The following functions and variables are obsolete:
Glenn Morris's avatar
Glenn Morris committed
865

Chong Yidong's avatar
Chong Yidong committed
866 867 868 869
*** `automount-dir-prefix'
*** `buffer-has-markers-at'
*** `macro-declaration-function' (use `macro-declarations-alist').
*** `window-system-version'
870
*** `dired-pop-to-buffer' (use `dired-mark-pop-up')
871
*** `query-replace-interactive'
872

873

874
* Changes in Emacs 24.3 on non-free operating systems
875 876 877 878 879 880

** New configure.bat options on MS-Windows:

*** --without-libxml2 omits support for libxml2, even if its presence
is detected.

881 882 883 884
** When invoked with the -nw switch to run on the Windows text-mode terminal,
Emacs now supports mouse highlight, help-echo (in the echo area), and
mouse-autoselect-window.

885
** On MS-Windows Vista and later Emacs now supports symbolic links.
886 887 888

* Changes in Emacs 24.2

Glenn Morris's avatar
Glenn Morris committed
889
** This is mainly a bug-fix release.
890

891

892
* Installation Changes in Emacs 24.1
Chong Yidong's avatar
Chong Yidong committed
893

894 895 896 897
** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
to configure.  Note that other libraries used by Emacs, RSVG and GConf,
also depend on Gtk+.  You can disable them with --without-rsvg and
--without-gconf.
898

899 900 901 902
** Emacs can be compiled with GnuTLS support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-gnutls'.  See below for GnuTLS features.
903

904 905 906 907
** Emacs can be compiled with SELinux support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-selinux'.  See below for SELinux features.
Glenn Morris's avatar
Glenn Morris committed
908

909 910 911 912
** Emacs can be compiled with ImageMagick support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-imagemagick'.  See below for ImageMagick features.
Glenn Morris's avatar
Glenn Morris committed
913
This feature is not available for the Nextstep or MS ports.
914

915 916 917 918 919
** Emacs can be compiled with libxml2 support.
This happens by default if a suitably recent version of the library is
found at build time.  To prevent this, use the configure option
`--without-xml2'.  See below for libxml2 features.

920 921 922 923
** By default, the installed Info and man pages are compressed.
You can disable this by configuring --without-compress-info.

** New configure option --with-wide-int.
Paul Eggert's avatar
Paul Eggert committed
924
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
925 926
On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
to about 2 GiB.
Paul Eggert's avatar
Paul Eggert committed
927

928
** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
929 930 931
These provide no new functionality, they just remove the need to edit
lib-src/Makefile by hand in order to use the associated features.

932
** New configure option --enable-use-lisp-union-type.
933 934
This is only useful for Emacs developers to debug certain types of bugs.
This is not a new feature; only the configure flag is new.
Chong Yidong's avatar
Chong Yidong committed
935 936 937 938 939 940 941

** The standalone programs digest-doc and sorted-doc are removed.
Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.

** The standalone program `fakemail' is removed.
If you need it, feedmail.el provides a superset of the functionality.

942

943
* Startup Changes in Emacs 24.1
944

945
** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
Glenn Morris's avatar
Glenn Morris committed
946 947
command line arguments, and the EMACS_UNIBYTE environment variable, no
longer have any effect.  (They were declared obsolete in Emacs 23.)
948

949
** New command line option `--no-site-lisp' removes site-lisp directories
950 951
from load-path.  -Q now implies this.  This option does not affect the
EMACSLOADPATH environment variable (and hence has no effect for
Glenn Morris's avatar
Glenn Morris committed
952
Nextstep builds).
953

954

955
* Changes in Emacs 24.1
956

957
** Completion
958

959 960 961
*** Many packages now use the `completion-at-point' command,
rather than implementing separate completion commands.

962
*** `completion-at-point' now handles tags and semantic completion.
963

964 965
*** Completion in a non-minibuffer now tries to detect the end of completion
and pops down the *Completions* buffer accordingly.
966 967 968 969

*** New option `completion-cycle-threshold' allows completion cycling.

*** New option `completion-category-overrides' for overriding the
970
default completion style in certain circumstances.
971

972
*** New completion style `substring'.
973 974 975 976

*** Completion of buffer names uses `substring' completion by default.

*** The option `widget-complete-field' has been removed.
977

978
** Mail changes
979

980 981 982 983 984 985
*** The first time you try sending mail, Emacs asks for a mail method.
This is implemented by a new default for `send-mail-function', which
is `sendmail-query-once'.  This offers to use the smtpmail package, or
to use the old defaults relying on external mail facilities
(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
`mailclient-send-it' on Windows).
986

987 988 989
*** Typing C-c m in the buffer made by M-x report-emacs-bug transfers
the report to your desktop's preferred mail client, if there is one.
This uses either the "xdg-email" utility, or Mac OS's "open" command.
990

991 992
*** See Changes in Specialized Modes and Packages for SMTPmail changes
and Mail mode changes
Glenn Morris's avatar
Glenn Morris committed
993

Chong Yidong's avatar
Chong Yidong committed
994
** Emacs server and client changes
995

996
*** New option `server-port' specifies the port for TCP Emacs servers.
997

Chong Yidong's avatar
Chong Yidong committed
998
*** New emacsclient argument -q/--quiet suppresses some status messages.
999

1000 1001
*** New emacsclient argument --frame-parameters specifies the frame
parameters of any newly-created graphical frame.
1002 1003 1004 1005

*** If emacsclient shuts down due to Emacs signaling an error,
its exit status is 1.

Chong Yidong's avatar
Chong Yidong committed
1006 1007 1008 1009
*** New emacsclient argument --parent-id ID.
This opens a client frame in parent X window ID, via XEmbed, similar
to the --parent-id argument to Emacs.

1010 1011 1012
** Internationalization changes

*** Emacs now supports display and editing of bidirectional text.
1013 1014
Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
displayed in the correct visual order as expected by users of those
1015 1016 1017
scripts.  The display reordering is a "full bidirectionality" class
implementation of the Unicode Bidirectional Algorithm (UBA).  Buffers
with no RTL text should look exactly the same as before.
1018

Chong Yidong's avatar
Chong Yidong committed
1019
**** New buffer-local variable `bidi-display-reordering'.
1020
To disable display reordering in a buffer, change this to nil.
1021

Chong Yidong's avatar
Chong Yidong committed
1022 1023
**** New buffer-local variable `bidi-paragraph-direction'.
If nil (the default), Emacs determines the base direction of each
1024 1025 1026
paragraph from its text, as specified by the UBA.  Setting the value
to `right-to-left' or `left-to-right' forces a base direction on each
paragraph.
1027

1028 1029
Paragraphs with right-to-left base direction are displayed starting at
the right window edge.
1030

1031 1032 1033 1034 1035
*** Enhanced support for characters with no glyphs in available fonts,
or, on text terminals, characters that cannot be encoded by the
terminal coding system.  The new option `glyphless-char-display-control'
specifies how to display them: as a hexadecimal code in a box, a thin
1-pixel space, an empty box, etc.
1036

Glenn Morris's avatar
Glenn Morris committed
1037 1038