NEWS 61.8 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

Paul Eggert's avatar
Paul Eggert committed
3
Copyright (C) 2014-2015 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 25.
10

Paul Eggert's avatar
Paul Eggert committed
11
See file HISTORY for a list of GNU Emacs versions and release dates.
12
See files NEWS.24, NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
13
and NEWS.1-17 for changes in older Emacs versions.
14 15 16

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.
17

Paul Eggert's avatar
Paul Eggert committed
18 19 20 21 22 23
Temporary note:
+++ indicates that all necessary documentation updates are complete.
    (This means all relevant manuals in doc/ AND lisp doc-strings.)
--- means no change in the manuals is needed.
When you add a new item, use the appropriate mark if you are sure it applies,
otherwise leave it unmarked.
24

Michael Albinus's avatar
Michael Albinus committed
25 26 27 28 29 30

* Installation Changes in Emacs 25.2

** 'configure' detects the kqueue file notification library on *BSD
and Mac OS X machines.

31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

* Changes in Emacs 25.2

** It is possible to disable attempted recovery on fatal signals

Two new variables allow to disable attempts to recover from stack
overflow and to avoid automatic auto-save when Emacs is delivered a
fatal signal.  `attempt-stack-overflow-recovery', if set to `nil',
will disable attempts to recover from C stack overflows; Emacs will
then crash as with any other fatal signal.
`attempt-orderly-shutdown-on-fatal-signal', if set to `nil', will
disable attempts to auto-save the session and shut down in an orderly
fashion when Emacs receives a fatal signal; instead, Emacs will
terminate immediately.  Both variables are non-`nil' by default.
These variables are for users who would like to avoid the small
probability of data corruption due to techniques Emacs uses to recover
in these situations.

Michael Albinus's avatar
Michael Albinus committed
49 50 51 52 53 54 55

* Changes in Specialized Modes and Packages in Emacs 25.2

** File Notifications

*** The kqueue library is integrated for *BSD and Mac OS X machines.

56

Stefan Monnier's avatar
Stefan Monnier committed
57
* Installation Changes in Emacs 25.1
58

Glenn Morris's avatar
Glenn Morris committed
59
+++
Paul Eggert's avatar
Paul Eggert committed
60 61
** Building Emacs now requires C99 or later.

62
+++
63
** Building Emacs now requires GNU make, version 3.81 or later.
Glenn Morris's avatar
Glenn Morris committed
64

65
+++
66
** New configure option --with-cairo.
67 68
This builds Emacs with Cairo drawing.  As a side effect, it provides
support for built-in printing, when Emacs was built with GTK+.
69

70 71 72
** New configure option --with-modules.
This enables support for loading dynamic modules; see below.

73
---
Paul Eggert's avatar
Paul Eggert committed
74 75 76 77 78 79 80
** By default, Emacs no longer works on IRIX.  We expect that Emacs
users are not affected by this, as SGI stopped supporting IRIX in
December 2013.  If you are affected, please send a bug report.  You
should be able to work around the problem either by porting the Emacs
undumping code to GCC under IRIX, or by configuring --with-wide-int,
or by sticking with Emacs 24.4.

81
---
82 83 84 85 86 87
** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
since Emacs 24.4, and the other variants were undocumented and were
obstacles to maintenance and development.  GC_MARK_STACK and its
related symbols have been removed from the C internals.

88
---
Paul Eggert's avatar
Paul Eggert committed
89 90 91
** 'configure' now prefers gnustep-config when configuring GNUstep.
If gnustep-config is not available, the old heuristics are used.

92 93 94 95
---
** 'configure' now prefers inotify to gfile for file notification,
unless gfile is explicitly requested via --with-file-notification='gfile'.

96
---
97
** The configure option '--with-pkg-config-prog' has been removed.
98
Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
99

100 101 102 103 104 105 106
---
** The configure option '--with-mmdf' has been removed.
It was no longer useful, as it relied on libraries that are no longer
supported, and its presence led to confusion during configuration.
This affects only the 'movemail' utility; Emacs itself can still
process MMDF-format files as before.

107
+++
108 109 110 111
** The configure option '--enable-silent-rules' is now the default,
and silent rules are now quieter.  To get the old behavior where
'make' chatters a lot, configure with '--disable-silent-rules' or
build with 'make V=1'.
112

113 114 115 116 117
---
** The configure option '--with-gameuser' now allows to specify a
group instead of a user if its argument is prefixed by ':' (a colon).
This will cause the game score files in ${localstatedir}/games/emacs
to be owned by that group, and the helper program for updating them to
118
be installed setgid.  The option now defaults to the 'games' group.
119

Glenn Morris's avatar
Glenn Morris committed
120 121 122 123 124
---
** The `grep-changelog' script (and its manual page) are no longer included.
It has no particular connection to Emacs and has not changed in years,
so if you want to use it, you can always take a copy from an older Emacs.

125
---
NicolasPetton's avatar
NicolasPetton committed
126 127 128 129
** Emacs 25 comes with a new set of icons.
Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
The old Emacs logo icons are available as `emacs23.png' in the same location.

130

Stefan Monnier's avatar
Stefan Monnier committed
131
* Startup Changes in Emacs 25.1
132

133 134 135 136 137 138 139 140
+++
** When Emacs is given a file as a command line argument and
`initial-buffer-choice' is non-nil, display both the file and
`initial-buffer-choice'.  When Emacs is given more than one file and
`initial-buffer-choice' is non-nil, show `initial-buffer-choice'
and *Buffer List*.  This makes Emacs convenient to use from the
command line when `initial-buffer-choice' is non-nil.

141 142 143 144
+++
** The value of ‘initial-scratch-message’ is now treated as a doc string
and can contain escape sequences for command keys, quotes, and the like.

145

Stefan Monnier's avatar
Stefan Monnier committed
146
* Changes in Emacs 25.1
147

148 149 150 151 152 153 154 155
** Emacs can now load shared/dynamic libraries (modules).
A dynamic Emacs module is a shared library that provides additional
functionality for use in Emacs Lisp programs, just like a package
written in Emacs Lisp would.  The functions `load', `require',
`load-file', etc. were extended to load such modules, as they do with
Emacs Lisp packages.  The new variable `module-file-suffix' holds the
system-dependent value of the file-name extension (`.so' on Posix
hosts) of the module files.
Eli Zaretskii's avatar
Eli Zaretskii committed
156

157 158 159 160 161 162
A module should export a C-callable function named
`emacs_module_init', which Emacs will call as part of the call to
`load' or `require' which loads the module.  It should also export a
symbol named `plugin_is_GPL_compatible' to indicate that its code is
released under the GPL or compatible license; Emacs will refuse to
load modules that don't export such a symbol.
163

164 165 166 167 168
If a module needs to call Emacs functions, it should do so through the
API defined and documented in the header file `emacs-module.h'.  Note
that any module that provides Lisp-callable functions will have to use
Emacs functions such as `fset' and `funcall', in order to register its
functions with the Emacs Lisp interpreter.
169

170 171 172 173 174 175 176 177 178 179 180 181 182 183
Modules can create `user-ptr' Lisp objects that embed pointers to C
struct's defined by the module.  This is useful for keeping around
complex data structures created by a module, to be passed back to the
module's functions.  User-ptr objects can also have associated
"finalizers" -- functions to be run when the object is GC'ed; this is
useful for freeing any resources allocated for the underlying data
structure, such as memory, open file descriptors, etc.  A new
predicate `user-ptrp' returns non-nil if its argument is a `user-ptr'
object.

Loadable modules in Emacs are an experimental feature, and subject to
change in future releases.  For that reason, their support is disabled
by default, and must be enabled by using the `--with-modules' option
at configure time.
184

185
+++
186 187 188
** Any file of the form .dir-locals*.el is now considered a dir-local
file, and multiple such files can be used in the same directory.  See
the variable `dir-locals-file' for more information.
189

190
+++
191 192 193 194
** Network security (TLS/SSL certificate validity and the like) is
added via the new Network Security Manager (NSM) and controlled via
the `network-security-level' variable.

195 196 197 198 199
---
** International domain names (IDNA) are now encoded via the new
puny.el library, so that one can visit web sites like
"http://méxico.icom.museum".

200 201 202 203 204 205
** If Emacs isn't built with TLS support, an external TLS-capable
program is used instead.  This program used to be run in --insecure
mode by default, but has now changed to be secure instead, and will
fail if you try to connect to non-verifiable hosts.  This is
controlled by the `tls-program' variable.

Eli Zaretskii's avatar
Eli Zaretskii committed
206
+++
207 208
** C-h l now also lists the commands that were run.

209
** The new M-s M-w key binding uses eww to search the web for the
210 211
text in the region.

212
** M-x suggests shorthands and ignores obsolete commands for completion.
213 214 215 216 217 218
** x-select-enable-clipboard is renamed select-enable-clipboard.
x-select-enable-primary and renamed select-enable-primary.
Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
name it), with the proviso that on some systems (e.g. Windows)
select-enable-primary is ineffective since the system doesn't
have the equivalent of a primary selection.
Stefan Monnier's avatar
Stefan Monnier committed
219

220
+++
221 222 223
** New option `switch-to-buffer-in-dedicated-window' allows to customize
how `switch-to-buffer' proceeds interactively when the selected window
is strongly dedicated to its buffer.
224

Leo Liu's avatar
Leo Liu committed
225
+++
226 227 228 229 230
** The option `even-window-heights' has been renamed to
`even-window-sizes' and now handles window widths as well.

+++
** terpri gets an optional arg ENSURE to conditionally output a newline.
Leo Liu's avatar
Leo Liu committed
231

232
+++
233 234
** `insert-register' now leaves point after the inserted text
when called interactively.  A prefix argument toggles this behavior.
235

236 237 238 239 240
+++
** The new variable `term-file-aliases' replaces some files from lisp/term.
The function `tty-run-terminal-initialization' consults this variable
when deciding what terminal-specific initialization code to run.

241 242 243 244 245
---
** New variable `system-configuration-features', listing some of the
main features that Emacs was compiled with.  This is mainly intended
for use in Emacs bug reports.

246 247 248 249 250
+++
** A password is now hidden also when typed in batch mode.  Another
hiding character but the default `.' can be used by let-binding the
variable `read-hide-char'.

251
---
252
** New input method: `tamil-dvorak'.
253

254

Stefan Monnier's avatar
Stefan Monnier committed
255
* Editing Changes in Emacs 25.1
256

257
+++
258
** M-x suggests shorthands and ignores obsolete commands for completion.
259

260
** Changes in undo
261

262
+++
263 264 265 266
*** Successive single-char deletions are collapsed in the undo-log just like
successive char insertions.  Which commands invoke this behavior is
controlled by the new `undo-auto-amalgamate' function.  See the node
"Undo" in the ELisp manual for more details.
267

268
+++
269 270 271 272
*** The heuristic used to insert `undo-boundary' after each command
has changed, so that if a command causes changes in more than just the
current buffer, Emacs now calls `undo-boundary' in every buffer
affected by the command.
273

274
+++
Eli Zaretskii's avatar
Eli Zaretskii committed
275
** New command `comment-line' bound to `C-x C-;'.
276

Eli Zaretskii's avatar
Eli Zaretskii committed
277
** New and improved facilities for inserting Unicode characters
278

Eli Zaretskii's avatar
Eli Zaretskii committed
279 280
---
*** Unicode names entered via C-x 8 RET now use substring completion by default.
281

Eli Zaretskii's avatar
Eli Zaretskii committed
282 283
+++
*** C-x 8 now has shorthands for these chars:               
284 285
         .  As before, you can type C-x 8 C-h to list shorthands.

Eli Zaretskii's avatar
Eli Zaretskii committed
286 287
+++
*** New minor mode electric-quote-mode for quoting like this and like this
288
as you type.  See also the new variable text-quoting-style.
Paul Eggert's avatar
Paul Eggert committed
289

Eli Zaretskii's avatar
Eli Zaretskii committed
290
---
291 292
** New minor mode global-eldoc-mode is enabled by default.

Eli Zaretskii's avatar
Eli Zaretskii committed
293
---
Glenn Morris's avatar
Glenn Morris committed
294
** Emacs now supports "bracketed paste mode" when running on a terminal
295
that supports it.  This facility allows Emacs to understand pasted
Glenn Morris's avatar
Glenn Morris committed
296 297 298
chunks of text as strings to be inserted, instead of interpreting each
character in the pasted text as actual user input.  This results in a
paste experience similar to that under a window system, and significant
299 300
performance improvements when pasting large amounts of text.

Eli Zaretskii's avatar
Eli Zaretskii committed
301
+++
Eli Zaretskii's avatar
Eli Zaretskii committed
302 303 304
** Emacs now supports the latest version of the UBA.
The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
was updated to support all the latest additions and changes introduced
305 306 307 308
in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
This includes full support for directional isolates and the
Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
standards.
Eli Zaretskii's avatar
Eli Zaretskii committed
309

310
+++
311 312
** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.

Tom Willemse's avatar
Tom Willemse committed
313 314 315
+++
** New buffer-local `electric-pair-local-mode'.

316 317 318 319 320 321
+++
** New variable `fast-but-imprecise-scrolling' inhibits
fontification during full screen scrolling operations, giving less
hesitant operation during auto-repeat of C-v, M-v at the cost of
possible inaccuracies in the end position.

322 323 324 325 326 327 328 329 330 331
+++
** New documentation command `describe-symbol'.
Works for functions, variables, faces, etc.  It is bound to `C-h o' by
default.

+++
** New function `custom-prompt-customize-unsaved-options' checks for
unsaved customizations and prompts user to customize (if found).  It
is intended for adding to 'kill-emacs-query-functions'.

332

Stefan Monnier's avatar
Stefan Monnier committed
333
* Changes in Specialized Modes and Packages in Emacs 25.1
334

Eli Zaretskii's avatar
Eli Zaretskii committed
335 336 337 338 339 340 341 342 343 344 345 346 347
** Checkdoc

+++
*** New command `checkdoc-package-keywords' checks if the
current package keywords are recognized.  Set the new option
`checkdoc-package-keywords-flag' to non-nil to make
`checkdoc-current-buffer' call this function automatically.

+++
*** New function `checkdoc-file' checks for style errors.
It's meant for use together with `compile':
emacs -batch --eval "(checkdoc-file \"subr.el\")"

348
+++
349 350 351 352
** New function `bookmark-set-no-overwrite' bound to C-x r M.
It raises an error if a bookmark of that name already exists,
unlike `bookmark-set' which silently updates an existing bookmark.

353 354
** IMAP

355
---
356 357 358
*** `imap-ssl-program' has been removed, and imap.el uses the internal
GnuTLS encryption functions if possible.

359
** JSON
Eli Zaretskii's avatar
Eli Zaretskii committed
360

361 362 363
---
*** `json-pretty-print' and `json-pretty-print-buffer' now maintain
the ordering of object keys by default.
Eli Zaretskii's avatar
Eli Zaretskii committed
364

365 366 367 368
---
*** New commands `json-pretty-print-ordered' and
`json-pretty-print-buffer-ordered' pretty prints JSON objects with
object keys sorted alphabetically.
369

370
+++
371
** Prog mode has some support for multi-mode indentation.
372 373 374 375 376 377 378 379 380
This allows better indentation support in modes that support multiple
programming languages in the same buffer, like literate programming
environments or ANTLR programs with embedded Python code.

A major mode can provide indentation context for a sub-mode through
the `prog-indentation-context' variable.  To support this, modes that
provide indentation should use `prog-widen' instead of `widen' and
`prog-first-column' instead of a literal zero.  See the node
"Mode-Specific Indent" in the ELisp manual for more details.
381

382
** Prettify Symbols mode
Eli Zaretskii's avatar
Eli Zaretskii committed
383

384
+++
385
*** Prettify Symbols mode supports custom composition predicates.  By
386
overriding the default `prettify-symbols-compose-predicate', modes can
387
specify in which contexts a symbol may be displayed as some Unicode
388 389 390 391
character.  `prettify-symbols-default-compose-p' is the default which
is suitable for most programming languages such as C or Lisp (but not
(La)TeX).

392
+++
393
*** Symbols can be unprettified while point is inside them.
394 395
New variable `prettify-symbols-unprettify-at-point' configures this.

396 397
** Enhanced xterm support

398
---
399
*** The new variable `xterm-screen-extra-capabilities' for configuring xterm.
400 401 402 403 404
This variable tells Emacs which advanced capabilities are available in
the xterm terminal emulator used to display Emacs text-mode frames.
The default is to check each capability, and use it if available.
(This variable was introduced in Emacs 24.1, but was not announced in
its NEWS.)
405

406 407 408 409 410
---
*** Killing text now also sets the CLIPBOARD/PRIMARY selection
in the surrounding GUI (using the OSC-52 escape sequence).  This only works
if your xterm supports it and enables the `allowWindowOps' options (disabled
by default at least in Debian, for security reasons).
411

412 413 414 415 416 417 418
Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
escape sequence) if your xterm has the feature enabled but for that you
additionally need to add `getSelection' to `xterm-extra-capabilities'.

+++
*** `xterm-mouse-mode' now supports mouse-tracking (if your xterm supports it).

419 420
---
** The `save-place' variable is replaced by `save-place-mode'.
421

422 423
** ERC

424 425 426 427 428
+++
*** ERC can now hide message types by network or channel.
`erc-hide-list' will hide all messages of the specified type, while
`erc-network-hide-list' and `erc-channel-hide-list' will only hide the
specified message types for the respective specified targets.
429

430 431 432
*** New variable `erc-default-port-tls' used to connect to TLS IRC
servers.

433 434
** Midnight-mode

435 436
---
*** `midnight-mode' is now a proper minor mode.
437

438
---
439
*** clean-buffer-*-regexps can now specify buffers via predicate functions.
440

441
** package.el
442

443
+++
444 445 446 447
*** New "external" package status.
An external package is any installed package that's not built-in and
not from `package-user-dir', which usually means it's from an entry in
`package-directory-list'.  They are treated much like built-in
448
packages, in that they cannot be deleted through the package menu and
449 450
are not considered for upgrades.

451
The effect is that a user can manually place a specific version of a
452
package inside `package-directory-list' and the package menu will
453 454
always respect that.

455
+++
456 457
*** If a package is available on multiple archives and one has higher
priority (as per `package-archive-priorities') only that one is
458
listed.  This can be configured with `package-menu-hide-low-priority'.
459

460
+++
461
*** `package-menu-toggle-hiding' now toggles the hiding of packages.
462 463 464 465 466 467
This includes the above-mentioned low-priority packages, as well as
available packages whose version is lower than the currently installed
version (which were previously impossible to display).
This allows users to downgrade a package if a lower version is
available.

468
---
469 470 471 472
*** When filtering the package menu, keywords starting with "arc:" or
"status:" represent package archive or status, respectively, instead
of actual keywords.

473
---
474 475 476 477
*** Most functions which involve downloading information now take an
ASYNC argument.  If it is non-nil, package.el performs the download(s)
asynchronously.

478
---
479 480 481
*** New variable `package-menu-async' controls whether the
package-menu uses asynchronous downloads.

482
---
483 484 485 486
*** `package-install-from-buffer' and `package-install-file' work on directories.
This follows the same rules as installing from a .tar file, except the
-pkg file is optional.

487
---
488 489 490
*** Packages which are dependencies of other packages cannot be deleted.
The FORCE argument to `package-delete' overrides this.

491
---
492 493
*** New custom variable `package-selected-packages' tracks packages
which were installed by the user (as opposed to installed as
494
dependencies).  This variable can also be manually customized.
495

496
---
497 498 499
*** New command `package-install-user-selected-packages' installs all
packages from `package-selected-packages' which are currently missing.

500
---
501 502 503
*** New command `package-autoremove' removes all packages which were
installed strictly as dependencies but are no longer needed.

504
+++
505 506 507 508
** Shell

When you invoke `shell' interactively, the *shell* buffer will now
display in a new window.  However, you can customize this behavior via
509
the `display-buffer-alist' variable.  For example, to get
510
the old behavior -- *shell* buffer displays in current window -- use
511 512
(add-to-list 'display-buffer-alist
     '("^\\*shell\\*$" . (display-buffer-same-window))).
513

514
** EIEIO
515
+++
516
*** The `:protection' slot option is not obeyed any more.
517
+++
518 519
*** The `newname' argument to constructors is optional&deprecated.
If you need your objects to be named, do it by inheriting from `eieio-named'.
520
+++
521
*** The <class>-list-p and <class>-child-p functions are declared obsolete.
522
+++
523
*** The <class> variables are declared obsolete.
524
+++
525
*** The <initarg> variables are declared obsolete.
526
*** defgeneric and defmethod are declared obsolete.
527
+++
528
*** `constructor' is now an obsolete alias for `make-instance'.
529

530
** ido
Eli Zaretskii's avatar
Eli Zaretskii committed
531 532

+++
533 534 535
*** New command `ido-bury-buffer-at-head' bound to C-S-b
Bury the buffer at the head of `ido-matches', analogous to how C-k
kills the buffer at head.
Eli Zaretskii's avatar
Eli Zaretskii committed
536 537

---
538 539 540
*** A prefix argument to `ido-restrict-to-matches' will reverse its
meaning, and the list is restricted to those elements that do not
match the current input.
541

542 543
** Minibuffer

544 545 546 547 548 549
+++
*** You can use <UP> and <DOWN> arrow keys to move through history by lines.
The new commands `next-line-or-history-element' and
`previous-line-or-history-element', bound to <UP> and <DOWN> in the
minibuffer, allow by-line movement through minibuffer history,
similarly to an ordinary buffer.  Only when point moves over
550
the bottom/top of the minibuffer it goes to the next/previous history
551 552
element.  `M-p' and `M-n' still move directly to previous/next history
item as before.
553

554 555
** Search and Replace

556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585
+++
*** New user option `search-default-regexp-mode'
specifies the default mode for I-search.

+++
*** `isearch' and `query-replace' can now perform character folding in matches.
Isearch does that by default, while `query-replace' will do that if
the new variable `replace-character-fold' is customized to a non-nil
value.  This is analogous to case folding, but instead of disregarding
case variants, it disregards wider classes of distinctions between
similar characters.  (Case folding is a special case of character
folding.)  This means many characters in the search string will match
entire groups of characters instead of just themselves.

For instance, the " will match all variants of double quotes (like “
and ”), and the letter a will match all of its accented cousins, even
those composed of multiple characters, as well as many other symbols
like ℀, ℁, ⒜, and ⓐ.

+++
*** New function `character-fold-to-regexp' can be used
by searching commands to produce a regexp matching anything that
character-folds into STRING.

+++
*** The new M-s M-w key binding uses eww to search the web for the
text in the region.  The search engine to use for this is specified by
the customizable variable `eww-search-prefix'.

+++
586 587 588 589 590 591 592 593
*** Query-replace history is enhanced.
When query-replace reads the FROM string from the minibuffer, typing
`M-p' will now show previous replacements as "FROM SEP TO", where FROM
and TO are the original text and its replacement, and SEP is an arrow
string defined by the new variable `query-replace-from-to-separator'.
To select a prior replacement, type `M-p' until the desired
replacement appears in the minibuffer, and then exit the minibuffer by
typing RET.
594

595 596 597 598 599
** Calc
+++
*** If `quick-calc' is called with a prefix argument, insert the
result of the calculation into the current buffer.

600 601 602 603 604
+++
** In Edebug, you can now set the initial mode with C-x C-a C-m.  With
this you can tell Edebug not to stop at the start of the first
instrumented function.

605
** ElDoc
Eli Zaretskii's avatar
Eli Zaretskii committed
606 607

+++
608
*** New minor mode `global-eldoc-mode'
609 610
It is turned on by default, and affects `*scratch*' and other buffers
whose major mode supports Emacs Lisp.
Eli Zaretskii's avatar
Eli Zaretskii committed
611 612

---
613
*** `eldoc-documentation-function' now defaults to `ignore'
Eli Zaretskii's avatar
Eli Zaretskii committed
614 615

---
616 617 618 619
*** `describe-char-eldoc' displays information about character at point,
and can be used as a default value of `eldoc-documentation-function'.  It is
useful when, for example, one needs to distinguish various spaces (e.g. ] [,
] [, ] [, etc.) while using mono-spaced font.
620

621 622
** eww

623 624 625 626 627 628 629 630
---
*** HTML can now be rendered using variable-width fonts.

+++
*** A new command `F' (`eww-toggle-fonts') can be used to toggle
whether to use variable-pitch fonts or not.  The user can also
customize the `shr-use-fonts' variable.

631
+++
Xue Fuqiao's avatar
Xue Fuqiao committed
632
*** A new command `C' (`eww-toggle-colors') can be used to toggle
633
whether to use the HTML-specified colors or not.  The user can also
Xue Fuqiao's avatar
Xue Fuqiao committed
634
customize the `shr-use-colors' variable.
635

636
+++
637 638 639 640
*** A new command `R' (`eww-readable') will try do identify the main
textual parts of a web page and display only that, leaving menus and
the like off the page.

641
---
642 643 644
*** You can now use several eww buffers in parallel by renaming eww
buffers you want to keep separate.

645
+++
Ivan Shmakov's avatar
Ivan Shmakov committed
646 647 648
*** Partial state of the eww buffers (the URIs and the titles of the
pages visited) is now preserved in the desktop file.

649
+++
650 651 652
*** `eww-after-render-hook' is now called after eww has rendered
the data in the buffer.

653 654 655 656
---
*** The `eww-reload' command now takes a prefix to not reload via
the net, but just use the local copy of the HTML.

657
+++
658 659 660 661 662
*** The DOM shr and eww uses has been changed to the general Emacs
xml.el/libxml2 DOM, and a new package dom.el has been added to
interact with this DOM.  See the Emacs Lisp manual for interface
details.

663
+++
664 665
*** `mailcap-mime-data' is now consulted when displaying PDF files.

666 667 668 669
+++
*** The new `S' command will list all eww buffers, and allow managing
them.

670 671 672 673
---
*** https pages with valid certificates have headers marked in green, while
invalid certificates are marked in red.

674 675
** Message mode

676
---
677 678 679
*** text/html messages that contain inline image parts will be
transformed into multipart/related messages before sending.

680
+++
681 682 683
** In Show Paren Mode, a parenthesis can be highlighted when point
stands inside it, and certain parens can be highlighted when point is
at BOL or EOL, or in whitespace there.  To enable these, customize,
Eli Zaretskii's avatar
Eli Zaretskii committed
684 685
respectively, `show-paren-when-point-inside-paren' or
`show-paren-when-point-in-periphery'.
686

687 688 689
** Lisp mode
*** Strings after `:documentation' are highlighted as docstrings.

690
** Rectangle editing
691 692

+++
693
*** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
694 695

+++
696 697
*** C-x C-x in rectangle-mark-mode now cycles through the four corners.
*** `string-rectangle' provides on-the-fly preview of the result.
698

699 700 701 702
+++
** New font-lock functions `font-lock-ensure' and `font-lock-flush'.
These should be used in preference to `font-lock-fontify-buffer' when
called from Lisp.
703

704 705 706
---
** Macro `minibuffer-with-setup-hook' can optionally append a function
to `minibuffer-setup-hook'.
707

708 709 710
If the first argument of the macro is of the form `(:append FUN)',
then FUN will be appended to `minibuffer-setup-hook', instead of
prepending it.
711

712
** cl-lib
713 714
+++
*** New functions `cl-fresh-line', `cl-digit-char-p', and `cl-parse-integer'.
715

716 717
** Calendar and diary

718 719 720
+++
*** The default `diary-file' is now located in .emacs.d.

721 722 723
+++
*** New commands to insert diary entries with Chinese dates:
`diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
Glenn Morris's avatar
Glenn Morris committed
724
`diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
725 726

+++
727
*** The calendar can now list and mark diary entries with Chinese dates.
Glenn Morris's avatar
Glenn Morris committed
728 729
See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.

730 731 732 733
---
*** The option `calendar-mode-line-format' can now be nil,
which means to do nothing special with the mode line in calendars.

734 735 736 737 738
+++
*** New option `calendar-weekend-days'.
The option customizes which day headers receive the
`calendar-weekend-header' face.

739 740 741
---
*** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.

742 743 744 745 746 747 748 749 750 751 752 753 754
---
*** Many items obsolete since at least version 23.1 have been removed.
The majority were function/variable/face aliases, too numerous to list here.
The remainder were:

**** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
`calendar-two-frame-setup', `european-calendar', `american-calendar'.

**** Hooks `cal-menu-load-hook', `cal-x-load-hook'.

**** Macro `calendar-for-loop'.

**** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
755

756 757
**** The nil and list forms of `diary-display-function'.

758
+++
759
** New ERT function `ert-summarize-tests-batch-and-exit'.
760 761 762
If the output of ERT tests in batch mode execution can be saved to a
log file, then it can be passed as an argument to the above function
to produce a neat summary.
763

764
** New js.el option `js-indent-first-init'.
765

766 767
** Info

768
---
769 770 771 772
** Info mode now displays symbol names in fixed-pitch font.
If you want to get the old behavior back, customize the `Info-quoted'
face to use the same definitions as the default face.

773
---
774
*** `Info-fontify-maximum-menu-size' can be t for no limit.
775

776
+++
777
*** `info-display-manual' can now be given a prefix argument which (any
778 779 780
non-nil value) directs the command to limit the completion
alternatives to currently visited manuals.

781 782 783
---
** ntlm.el has support for NTLM2.

784 785
** Rmail

Eli Zaretskii's avatar
Eli Zaretskii committed
786
+++
Eli Zaretskii's avatar
Eli Zaretskii committed
787 788
*** The Rmail commands `d', `C-d' and `u' take optional repeat counts
to delete or undelete multiple messages.
Glenn Morris's avatar
Glenn Morris committed
789

Eli Zaretskii's avatar
Eli Zaretskii committed
790
+++
791
*** Rmail can now render HTML mail messages if your Emacs was built with
792 793 794 795 796
libxml2 or if you have the Lynx browser installed.  By default, Rmail
will display the HTML version of a mail message that has both HTML and
plain text parts, if display of HTML email is possible; customize the
`rmail-mime-prefer-html' option to `nil' if you don't want that.

797 798 799 800
+++
*** In the commands that make summaries by subject, recipients, or senders,
you can no longer use commas to separate regular expressions.

801
+++
Glenn Morris's avatar
Glenn Morris committed
802
** SES now supports local printer functions; see `ses-define-local-printer'.
803

804 805
** Shell-script Mode
---
806
*** In sh-mode you can now use `sh-shell' as a file-local variable to
Glenn Morris's avatar
Glenn Morris committed
807 808
specify the type of shell in use (bash, csh, etc).

809 810
---
*** New value `always' for `sh-indent-after-continuation'.
811
This provides old-style ("dumb") indentation of continued lines.
812
See the doc string of `sh-indent-after-continuation' for details.
813

814 815 816 817
** TLS
---
*** Fatal TLS errors are now silent by default.

818 819
** URL

820
+++
821
*** The URL package accepts now the protocols "ssh", "scp" and "rsync".
822 823 824
When `url-handler-mode' is enabled, file operations for these
protocols as well as for "telnet" and "ftp" are passed to Tramp.

Eli Zaretskii's avatar
Eli Zaretskii committed
825
+++
826
*** The URL package allows customizing the `url-user-agent' string.
827 828 829
The new `url-user-agent' variable can be customized to be a string or
a function.

830
---
831 832 833 834
*** The new interface variable `url-request-noninteractive' can be used
to specify that we're running in a noninteractive context, and that
we should not be queried about things like TLS certificate validity.

835
---
836 837 838 839
*** If URL is used with a https connection, the first callback argument
plist will contain a :peer element that has the output of
`gnutls-peer-status' (if Emacs is built with GnuTLS support).

840 841
** Tramp

Michael Albinus's avatar
Michael Albinus committed
842 843 844 845
+++
*** New connection method "afp", which allows to access Mac OS X
volumes via the Apple Filing Protocol.

846
+++
847 848
*** New connection method "nc", which allows to access dumb busyboxes.

849
+++
850 851 852
*** Method-specific parameters can be overwritten now with variable
`tramp-connection-properties'.

853 854 855 856
---
*** Handler for `file-notify-valid-p' for remote machines that support
filesystem notifications.

857 858
** SQL mode

859
---
860 861 862
*** New user variable `sql-default-directory' enables remote
connections using Tramp.

863 864 865 866 867
---
*** New command `sql-send-line-and-next'.
This command, bound to `C-c C-n' by default, sends the current line to
the SQL process and advances to the next line, skipping whitespace and
comments.
868

869 870
---
*** Added support for Vertica SQL.
Sam Steingold's avatar
Sam Steingold committed
871

872 873
** VC and related modes

874
+++
Glenn Morris's avatar
Glenn Morris committed
875
*** Basic push support, via `vc-push', bound to `C-x v P'.
Glenn Morris's avatar
Glenn Morris committed
876 877
Implemented for Bzr, Git, Hg.  As part of this change, the pre-existing
(undocumented) command vc-hg-push now behaves slightly differently.
Glenn Morris's avatar
Glenn Morris committed
878

Eli Zaretskii's avatar
Eli Zaretskii committed
879
+++
880 881
*** The new command vc-region-history shows the log+diff of the active region.

Eli Zaretskii's avatar
Eli Zaretskii committed
882 883 884 885 886 887
+++
*** You can refresh the VC state of a file buffer with `M-x vc-refresh-state'.
This command is useful when you perform version control commands
outside Emacs (e.g., from the shell prompt), or if you switch the VC
back-end for the buffer's file, or remove it from version control.

888
+++
889 890 891 892
*** New option `vc-annotate-background-mode' controls whether
the color range from `vc-annotate-color-map' is applied to the
background or to the foreground.

893 894 895 896 897 898
+++
*** `compare-windows' now compares text with the most recently selected window
instead of the next window.  If you want the previous behavior of
comparing with the next window, customize the new option
`compare-windows-get-window-function' to the value
`compare-windows-get-next-window'.
899

900
---
901
*** Two new faces `compare-windows-removed' and `compare-windows-added'
902 903
replace the face `compare-windows', which is now an obsolete alias for
`compare-windows-added'.
904

905 906 907 908 909
---
*** `log-edit-insert-changelog' converts "(tiny change)" to
"Copyright-paperwork-exempt: yes".  Set `log-edit-rewrite-tiny-change'
nil to disable this.

910 911
---
** VHDL mode now supports VHDL'08.
912

913
** Calculator
914

915 916 917 918 919 920
---
*** Decimal display mode uses "," groups, so it's more
fitting for use in money calculations

---
*** Factorial works with non-integer inputs.
921

922 923 924
** HideIfDef mode now support full C/C++ expressions, argumented macro
expansions, interactive macro evaluation and automatic scanning of
#defined symbols.
925 926

*** New custom variable `hide-ifdef-header-regexp' to define C/C++ header file
927
name patterns.  Default case-insensitive .h, .hh, .hpp, .hxx, and .h++.
928 929 930
*** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
reinclusion protected header files from being fully hidden.
*** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
931
name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be excluded.
932