NEWS 40.7 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

11
See files NEWS.24, NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
12
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

Paul Eggert's avatar
Paul Eggert committed
17 18 19 20 21 22
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.
23

24

Stefan Monnier's avatar
Stefan Monnier committed
25
* Installation Changes in Emacs 25.1
26

Glenn Morris's avatar
Glenn Morris committed
27
+++
Paul Eggert's avatar
Paul Eggert committed
28 29
** Building Emacs now requires C99 or later.

30
** Building Emacs now requires GNU make, version 3.81 or later.
Glenn Morris's avatar
Glenn Morris committed
31

Paul Eggert's avatar
Paul Eggert committed
32 33 34 35 36 37 38
** 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.

Paul Eggert's avatar
Paul Eggert committed
39 40 41
** 'configure' now prefers gnustep-config when configuring GNUstep.
If gnustep-config is not available, the old heuristics are used.

42
---
43
** The configure option '--with-pkg-config-prog' has been removed.
44
Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
45

46 47 48 49 50 51 52
---
** 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.

53 54 55 56
** 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'.
57

58 59 60 61 62
---
** 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
63
be installed setgid.  The option now defaults to the 'games' group.
64

Glenn Morris's avatar
Glenn Morris committed
65 66 67 68 69
---
** 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.

70

Stefan Monnier's avatar
Stefan Monnier committed
71
* Startup Changes in Emacs 25.1
72

73 74 75 76 77 78 79 80
+++
** 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.

81

Stefan Monnier's avatar
Stefan Monnier committed
82
* Changes in Emacs 25.1
83

84 85
** New command `comment-line' bound to `C-x C-;'.

86 87 88
** New function `custom-prompt-customize-unsaved-options' checks for
unsaved customizations and prompts user to customize (if found).

89
+++
90 91 92 93
** 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.

94 95
** C-h l now also lists the commands that were run.

96
---
97
** The new M-s M-w key binding uses eww to search the web for the
98 99
text in the region.

100
** M-x suggests shorthands and ignores obsolete commands for completion.
101 102 103 104 105 106
** 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
107

108 109 110
+++
** terpri gets an optional arg ENSURE to conditionally output a newline.

Leo Liu's avatar
Leo Liu committed
111 112 113
+++
** New macro `define-advice'.

114 115
** `insert-register' now leaves point after the inserted text
when called interactively.  A prefix argument toggles this behavior.
116

117 118
** New var `truncate-string-ellipsis' to choose how to indicate truncation.

119 120 121 122 123
+++
** 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.

124 125 126 127 128
---
** 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.

129 130 131 132 133
+++
** 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'.

134 135
** The new functions `string-collate-lessp' and `string-collate-equalp'
preserve the collation order as defined by the system's locale(1)
136 137 138
environment.  For the time being this is implemented for modern POSIX
systems and for MS-Windows, for other systems they fall back to their
counterparts `string-lessp' and `string-equal'.
139

140 141 142 143 144 145 146 147 148 149 150
*** The ls-lisp package uses `string-collate-lessp' to sort file names.
If you want the old, locale-independent sorting, customize the new
option `ls-lisp-use-string-collate' to a nil value.

*** The MS-Windows specific variable `w32-collate-ignore-punctuation',
if set to a non-nil value, causes the above 2 functions to ignore
symbol and punctuation characters when collating strings.  This
emulates the behavior of modern Posix platforms when the locale's
codeset is "UTF-8" (as in "en_US.UTF-8").  This is needed because
MS-Windows doesn't support UTF-8 as codeset in its locales.

151 152 153 154 155 156 157
+++
** The new function `bidi-find-overridden-directionality' allows to
find characters whose directionality was, perhaps maliciously,
overridden by directional override control characters.  Lisp programs
can use this to detect potential phishing of URLs and other links that
exploits bidirectional display reordering.

158 159 160 161 162 163 164
+++
** The new function `buffer-substring-with-bidi-context' allows to
copy a portion of a buffer into a different location while preserving
the visual appearance both of the copied text and the text at
destination, even when the copied text includes mixed bidirectional
text and directional control characters.

165 166 167 168 169
** New variable `ns-use-fullscreen-animation' controls animation for
non-native NS fullscreen.  The default is nil.  Set to t to enable
animation when entering and leaving fullscreen.  For native OSX fullscreen
this has no effect.

170
** A new text property `inhibit-read-only' can be used in read-only
171 172
buffers to allow certain parts of the text to be writable.

173 174 175
** A new function `directory-files-recursively' returns all matching
files (recursively) under a directory.

176
** The new function `directory-name-p' can be used to check whether a file
177 178 179 180
name (as returned from, for instance, `file-name-all-completions' is
a directory file name.  It returns non-nil if the last character in
the name is a forward slash.

181 182 183 184 185 186
+++
** 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.

187 188 189 190
** The function `font-info' now returns more details about a font.
In particular, it now returns the average width of the font's
characters, which can be used for geometry-related calculations.

191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
** A new function `default-font-width' returns the average width of a
character in the current buffer's default font.  If the default face
is remapped (see `face-remapping-alist'), the value for the remapped
face is returned.  This function complements the existing function
`default-font-height'.

** New functions `window-font-height' and `window-font-width' return
the height and average width of characters in a specified face and
window.  If FACE is remapped (see `face-remapping-alist'), the
function returns the information for the remapped face.

** A new function `window-max-chars-per-line' returns the maximal
number of characters that can be displayed on one line.  If a face
and/or window are provided, these values are used for the
calculation.  This function is different from `window-body-width' in
that it accounts for (i) continuation glyphs, (ii) the size of the
font, and (iii) the specified window.

209 210
** New possible value for `system-type': nacl.

211 212 213 214 215
+++
** New variable `inhibit-message', when bound to non-nil, inhibits
   `message' and related functions from displaying messages the Echo
   Area.  The output is still logged to the *Messages* buffer.

216
+++
217 218 219 220
** It is now safe for a mode that derives `tabulated-list-mode' to not
call `tabulated-list-init-header', in which case it will have no
header.

221 222 223 224 225
+++
** `tabulated-list-print' takes a second optional argument, update,
which specifies an alternative printing method which is faster when
few or no entries have changed.

226

Stefan Monnier's avatar
Stefan Monnier committed
227
* Editing Changes in Emacs 25.1
228

229 230 231
** Successive single-char deletions are collapsed in the undo-log just like
successive char insertions.

232 233
** Unicode names entered via C-x 8 RET now use substring completion by default.

234 235 236
** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
€ № ← → ↔ − ≈ ≠ ≤ ≥.  As before, you can type C-x 8 C-h to list shorthands.

Paul Eggert's avatar
Paul Eggert committed
237 238
** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”.

239 240
** New minor mode global-eldoc-mode is enabled by default.

Glenn Morris's avatar
Glenn Morris committed
241
** Emacs now supports "bracketed paste mode" when running on a terminal
242
that supports it.  This facility allows Emacs to understand pasted
Glenn Morris's avatar
Glenn Morris committed
243 244 245
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
246 247
performance improvements when pasting large amounts of text.

Eli Zaretskii's avatar
Eli Zaretskii committed
248 249 250 251 252 253 254 255
** 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
in Unicode Standard versions 6.3 and 7.0, and a few changes suggested
for Unicode 8.0.  This includes full support for directional isolates
and the Bidirectional Parentheses Algorithm (BPA) specified by these
Unicode standards.

256 257
** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.

Tom Willemse's avatar
Tom Willemse committed
258 259 260
+++
** New buffer-local `electric-pair-local-mode'.

261

Stefan Monnier's avatar
Stefan Monnier committed
262
* Changes in Specialized Modes and Packages in Emacs 25.1
263

264 265
** New `xterm-screen-extra-capabilities' config.

266 267
** The `save-place' variable is replaced by a `save-place-mode'.

268 269 270 271 272 273 274
** ERC

*** Hide message types by network or channel. `erc-hide-list' will
hide all messages of the specified type, where `erc-network-hide-list'
and `erc-channel-hide-list' will only hide the specified message types
for the respective specified targets.

275 276 277 278
** Midnight-mode
*** `midnight-mode' is a proper minor mode.
*** clean-buffer-*-regexps can now specify buffers via predicate functions.

279
** In xterms, killing text now also sets the CLIPBOARD/PRIMARY selection
280 281 282
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).
283

284 285 286 287
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'.

288 289
** xterm-mouse-mode now supports mouse-tracking (if your xterm supports it).

290
** package.el
291

292 293 294 295
*** 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
296
packages, in that they cannot be deleted through the package menu and
297 298 299
are not considered for upgrades.

The effect, is that a user can manually place a specific version of a
300
package inside `package-directory-list' and the package menu will
301 302
always respect that.

303 304 305 306 307 308 309 310 311 312 313
*** If a package is available on multiple archives and one has higher
priority (as per `package-archive-priorities') only that one is
listed. This can be configured with `package-menu-hide-low-priority'.

*** `package-menu-hide-obsolete' now toggles the hiding of packages.
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.

314 315 316 317
*** When filtering the package menu, keywords starting with "arc:" or
"status:" represent package archive or status, respectively, instead
of actual keywords.

318 319 320 321 322 323 324
*** Most functions which involve downloading information now take an
ASYNC argument.  If it is non-nil, package.el performs the download(s)
asynchronously.

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

325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341
*** `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.

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

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

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

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

342 343 344 345
** Shell

When you invoke `shell' interactively, the *shell* buffer will now
display in a new window.  However, you can customize this behavior via
346
the `display-buffer-alist' variable.  For example, to get
347
the old behavior -- *shell* buffer displays in current window -- use
348 349
(add-to-list 'display-buffer-alist
     '("^\\*shell\\*$" . (display-buffer-same-window))).
350

351 352

** EIEIO
353
+++
354
*** The `:protection' slot option is not obeyed any more.
355
+++
356 357
*** The `newname' argument to constructors is optional&deprecated.
If you need your objects to be named, do it by inheriting from `eieio-named'.
358
+++
359
*** The <class>-list-p and <class>-child-p functions are declared obsolete.
360
+++
361
*** The <class> variables are declared obsolete.
362
+++
363
*** The <initarg> variables are declared obsolete.
364
*** defgeneric and defmethod are declared obsolete.
365
+++
366
*** `constructor' is now an obsolete alias for `make-instance'.
367

368 369 370 371
** ido
*** 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.
372

373 374 375 376 377 378 379 380
** Minibuffer

*** You can use <up> and <down> keys to move point in the multi-line
minibuffer just as in an ordinary buffer.  Only when point moves over
the bottom/top of the minibuffer it goes to the next/previous history
element.  The new commands bound to <up> and <down> in the minibuffer:
`next-line-or-history-element' and `previous-line-or-history-element'.

381 382
** Search and Replace

383 384 385 386 387 388 389 390
*** 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.
391

392 393 394 395 396
** Calc
+++
*** If `quick-calc' is called with a prefix argument, insert the
result of the calculation into the current buffer.

397
** ElDoc
398 399 400 401 402 403
*** New minor mode `global-eldoc-mode'
*** `eldoc-documentation-function' now defaults to `ignore'
*** `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.
404

405 406
** eww

407 408 409 410 411 412 413 414
---
*** 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.

415
+++
416 417 418 419
*** 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.

420
---
421 422 423
*** You can now use several eww buffers in parallel by renaming eww
buffers you want to keep separate.

424
+++
Ivan Shmakov's avatar
Ivan Shmakov committed
425 426 427
*** Partial state of the eww buffers (the URIs and the titles of the
pages visited) is now preserved in the desktop file.

428
+++
429 430 431
*** `eww-after-render-hook' is now called after eww has rendered
the data in the buffer.

432 433 434 435
---
*** The `eww-reload' command now takes a prefix to not reload via
the net, but just use the local copy of the HTML.

436
+++
437 438 439 440 441
*** 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.

442
+++
443 444
*** `mailcap-mime-data' is now consulted when displaying PDF files.

445 446 447 448
+++
*** The new `S' command will list all eww buffers, and allow managing
them.

449 450 451 452
---
*** https pages with valid certificates have headers marked in green, while
invalid certificates are marked in red.

453 454 455 456 457
** Message mode

*** text/html messages that contain inline image parts will be
transformed into multipart/related messages before sending.

458
** pcase
459
*** New UPatterns `quote', `app', `cl-struct', and `eieio'.
460
*** New UPatterns can be defined with `pcase-defmacro'.
461 462
+++
*** New vector QPattern.
463

464 465 466
** Lisp mode
*** Strings after `:documentation' are highlighted as docstrings.

467 468 469 470
** Rectangle editing
*** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
*** C-x C-x in rectangle-mark-mode now cycles through the four corners.
*** `string-rectangle' provides on-the-fly preview of the result.
471

Glenn Morris's avatar
Glenn Morris committed
472 473
** New font-lock functions font-lock-ensure and font-lock-flush, which
should be used instead of font-lock-fontify-buffer when called from Elisp.
474

475 476 477
** Macro `minibuffer-with-setup-hook' takes (:append FUN) to mean
appending FUN to `minibuffer-setup-hook'.

478 479 480
** cl-lib
*** New functions cl-fresh-line, cl-digit-char-p and cl-parse-integer.

481 482 483 484 485 486
** seq
*** New seq library:
The seq library adds sequence manipulation functions and macros that
complement basic functions provided by subr.el. All functions are
prefixed with `seq-' and work on lists, strings and vectors.

487 488 489 490 491
** Calendar and diary

+++
*** 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
492
`diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
493 494

+++
495
*** The calendar can now list and mark diary entries with Chinese dates.
Glenn Morris's avatar
Glenn Morris committed
496 497
See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.

498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514
---
*** The option `calendar-mode-line-format' can now be nil,
which means to do nothing special with the mode line in calendars.

---
*** 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}'.
515

516 517
**** The nil and list forms of `diary-display-function'.

518 519
** New ERT function `ert-summarize-tests-batch-and-exit'.

520
** New js.el option `js-indent-first-init'.
521

522 523 524
---
** `Info-fontify-maximum-menu-size' can be t for no limit.

525 526 527 528 529
+++
** `info-display-manual' can now be given a prefix argument which (any
non-nil value) directs the command to limit the completion
alternatives to currently visited manuals.

530 531 532
---
** ntlm.el has support for NTLM2.

533 534 535
** Rmail

*** The Rmail commands d, C-d and u take optional repeat counts to delete or
Glenn Morris's avatar
Glenn Morris committed
536 537
undelete multiple messages.

538
*** Rmail can now render HTML mail messages if your Emacs was built with
539 540 541 542 543
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.

544 545 546 547
+++
*** In the commands that make summaries by subject, recipients, or senders,
you can no longer use commas to separate regular expressions.

Glenn Morris's avatar
Glenn Morris committed
548
** SES now supports local printer functions; see `ses-define-local-printer'.
549

Glenn Morris's avatar
Glenn Morris committed
550 551 552
** In sh-mode, you can now use `sh-shell' as a file-local variable to
specify the type of shell in use (bash, csh, etc).

553 554 555 556
** TLS
---
*** Fatal TLS errors are now silent by default.

557 558 559
** URL

*** The URL package accepts now the protocols "ssh", "scp" and "rsync".
560 561 562
When `url-handler-mode' is enabled, file operations for these
protocols as well as for "telnet" and "ftp" are passed to Tramp.

563
*** The URL package allows customizing the `url-user-agent' string.
564 565 566
The new `url-user-agent' variable can be customized to be a string or
a function.

567 568 569 570
*** 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.

571 572 573 574
*** 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).

575 576 577 578
** Tramp

*** New connection method "nc", which allows to access dumb busyboxes.

579 580 581 582 583 584 585 586 587
** SQL mode

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

*** New command `sql-send-line-and-next' sends the current line to the
interactive buffer and advances to the next line, skipping whitespace
and comments.

Sam Steingold's avatar
Sam Steingold committed
588 589
*** Add support for Vertica SQL.

590 591
** VC and related modes

Glenn Morris's avatar
Glenn Morris committed
592
*** Basic push support, via `vc-push', bound to `C-x v P'.
Glenn Morris's avatar
Glenn Morris committed
593 594
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
595

596 597
*** The new command vc-region-history shows the log+diff of the active region.

598 599 600 601
*** 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.

602
*** `compare-windows' now compares text with the most recently used window
603 604 605
instead of the next window.  The new option `compare-windows-get-window-function'
allows to customize this.

606 607 608
*** Two new faces `compare-windows-removed' and `compare-windows-added'
replace the obsolete face `compare-windows'.

609 610 611 612 613
---
*** `log-edit-insert-changelog' converts "(tiny change)" to
"Copyright-paperwork-exempt: yes".  Set `log-edit-rewrite-tiny-change'
nil to disable this.

614 615
** VHDL mode supports VHDL'08.

616 617 618 619
** Calculator: decimal display mode uses "," groups, so it's more
fitting for use in money calculations; factorial works with
non-integer inputs.

620 621
** HideIfDef mode now support full C/C++ expressions, argumented macro expansions,
interactive macro evaluation and automatic scanning of #defined symbols.
622 623 624 625 626 627 628 629

*** New custom variable `hide-ifdef-header-regexp' to define C/C++ header file
name patterns. Default case-insensitive .h, .hh, .hpp and .hxx.
*** 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
name patterns (e.x. all "FOR_DOXYGEN_ONLY_*") to be excluded.

630 631 632 633 634
** TeX mode

*** New custom variable `tex-print-file-extension' to help users who
use PDF instead of DVI.

635 636 637 638
** whitespace-mode: new 'big-indent style highlighting too much indentation.
By default, 32 spaces and four TABs are considered to be too much but
`whitespace-big-indent-regexp' can be configured to change that.

639 640 641 642 643
** tildify: `tildify-space-string', `tildify-pattern', and
`tildify-foreach-region-function' variables added making
`tildify-string-alist', `tildify-pattern-alist', and
`tildify-ignored-environments-alist' variables (as well as a few
helper functions) obsolete.
644

645 646 647 648 649 650
** xref
The new package provides generic framework and new commands to find
and move to definitions, as well as pop back to the original location.

*** New key bindings
`xref-find-definitions' replaces `find-tag' and provides an interface
Paul Eggert's avatar
Paul Eggert committed
651
to pick one destination among several.  Hence, `tags-loop-continue' is
652 653 654 655 656 657 658 659 660 661 662 663
unbound.  `xref-pop-marker-stack' replaces `pop-tag-mark', but uses an
easier binding, which is now unoccupied (`M-,').
`xref-find-definitions-other-window' replaces `find-tag-other-window'.
`xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
`xref-find-apropos' replaces `find-tag-regexp'.

*** New variables
`find-tag-marker-ring-length' is now an obsolete alias for
`xref-marker-ring-length'.  `find-tag-marker-ring' is now an obsolete
alias for a private variable.  `xref-push-marker-stack' and
`xref-pop-marker-stack' should be used to mutate it instead.

664 665 666 667 668
** etags
As a result of the above, these commands are now obsolete:
`find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
`tags-apropos' and `tags-loop-continue'.

669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696
** EUDC
EUDC's LDAP backend has been improved.

*** EUDC supports LDAP-over-SSL URLs (ldaps://).

*** EUDC passes LDAP passwords through a pipe to the ldapsearch
subprocess instead of on the command line.

*** EUDC handles LDAP wildcards automatically so the user shouldn't
need to configure this manually anymore.

*** The LDAP configuration section of EUDC's manual has been
rewritten.

There have also been customization changes.

*** New custom variable `eudc-server-hotlist' to allow specifying
multiple EUDC servers in init file.

*** Custom variable `eudc-inline-query-format' defaults to completing
on email and firstname instead of surname.

*** Custom variable `eudc-expansion-overwrites-query' defaults to nil
to avoid interfering with the kill ring.

*** Custom variable `eudc-inline-expansion-format' defaults to
"Firstname Surname <mail-address>".

697 698 699
*** Custom variable `eudc-options-file' defaults to
"~/.emacs.d/eudc-options".

700 701 702 703
*** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
allow overriding the regular expression that recognizes the ldapsearch
command line's password prompt.

704 705
** Eshell

706
+++
707
*** The new built-in command `clear' can scroll window contents out of sight.
708
If provided with an optional non-nil argument, the scrollback contents will be cleared.
709

710 711 712 713 714 715
*** New buffer syntax '#<buffer-name>', which is equivalent to
'#<buffer buffer-name>'.  This shorthand makes interacting with
buffers from eshell more convenient.  Custom variable
`eshell-buffer-shorthand', which has been broken for a while, has been
removed.

716 717 718 719 720 721 722 723
*** By default, eshell "visual" program buffers (created by
`eshell-visual-commands' and similar custom vars) are no longer killed
when their processes die.  This fixes issues with short-lived commands
and makes visual programs more useful in general.  For example, if
"git log" is a visual command, it will always show the visual command
buffer, even if the "git log" process dies.  For the old behavior,
make the new option `eshell-destroy-buffer-when-process-dies' non-nil.

Vibhav Pant's avatar
Vibhav Pant committed
724 725
** Browse-url

726 727 728 729
*** Support for the Conkeror web browser.

---
*** Support for several ancient browsers is now officially obsolete.
Vibhav Pant's avatar
Vibhav Pant committed
730

731 732 733 734
+++
** tar-mode: new `tar-new-entry' command, allowing for new members to
be added to the archive.

735 736 737
** Autorevert: dired buffers are also auto-reverted via file
notifications, if Emacs is compiled with file notification support.

Glenn Morris's avatar
Glenn Morris committed
738 739 740 741 742
** Obsolete packages

---
*** gulp.el

743
+++
744 745
** The character classes [:graph:] and [:print:] in regular expressions
no longer match every multibyte character.  Instead, Emacs now
746
consults the Unicode character properties to determine which
747 748 749
characters are graphic or printable.  In particular, surrogates and
unassigned codepoints are now rejected.  If you want the old behavior,
use [:multibyte:] instead.
750

751

Stefan Monnier's avatar
Stefan Monnier committed
752
* New Modes and Packages in Emacs 25.1
753

754 755
** cl-generic.el provides CLOS-style multiple-dispatch generic functions.

756
** scss-mode (a minor variant of css-mode)
757 758 759 760

** let-alist is a new macro (and a package) that allows one to easily
let-bind the values stored in an alist.

761 762 763 764 765
** `tildify-mode' allows to automatically insert hard spaces as one
types the text.  Breaking line after a single-character words is
forbidden by Czech and Polish typography (and may be discouraged in
other languages), so `auto-tildify-mode' makes it easier to create
a typographically-correct documents.
766

Stefan Monnier's avatar
Stefan Monnier committed
767
* Incompatible Lisp Changes in Emacs 25.1
768

769 770
** `inhibit-point-motion-hooks' now defaults to t and is obsolete.

771 772 773 774
** The optional `predicate' argument of `lisp-complete-symbol' no longer
has any effect.  (This change was made in Emacs 24.4 but was not
advertised at the time.)

775 776 777 778 779
** `indirect-function' does not signal `void-function' any more.
This is mostly a bug-fix, since this change was missed back in 24.4 when
symbol-function was changed not to signal `void-function' any more.
*** As a consequence, the second arg of `indirect-function' is now obsolete.

780 781 782
** Comint, term, and compile do not set the EMACS env var any more.
Use the INSIDE_EMACS environment variable instead.

783 784
** `save-excursion' does not save&restore the mark any more.

785 786
** read-buffer-function can now be called with a 4th argument (`predicate').

Stefan Monnier's avatar
Stefan Monnier committed
787 788 789 790 791
** completion-table-dynamic stays in the minibuffer.
If you want the old behavior of calling the function in the buffer
from which the minibuffer was entered, call it with the new argument
`switch-buffer'.

792
** window-configurations no longer record the buffers' marks.
793

Glenn Morris's avatar
Glenn Morris committed
794
** inhibit-modification-hooks now also inhibits lock-file checks, as well as
795 796
active region handling.

797 798
** deactivate-mark is now buffer-local.

Glenn Morris's avatar
Glenn Morris committed
799
** `cl-the' now asserts that its argument is of the given type.
800

801 802 803
** `process-running-child-p` may now return a numeric process
group ID instead of `t'.

804 805 806 807 808
+++
** Mouse click events on mode line or header line no longer include
any reference to a buffer position.  The 6th member of the mouse
position list returned for such events is now nil.

809 810 811
** Menu items in keymaps do not support the "key shortcut cache" any more.
These slots used to hold key-shortcut data, but have been obsolete since
Emacs-21.
812

813 814 815 816 817
** Emacs no longer downcases the first letter of a system diagnostic
when signaling a file error.  For example, it now reports "Permission
denied" instead of "permission denied".  The old behavior was problematic
in languages like German where downcasing rules depend on grammar.

818 819 820 821 822 823
** (substitute-command-keys "`foo'") now returns "foo".
That is, it replaces grave accents by left single quotation marks, and
apostrophes that match grave accents by right single quotation marks.
As before, isolated apostrophes and characters preceded by \= are
output as-is.

824 825 826 827 828 829
+++
** The character classes [:alpha:] and [:alnum:] in regular expressions
now match multibyte characters using Unicode character properties.
If you want the old behavior where they matched any character with
word syntax, use `\sw' instead.

830 831 832 833
+++
** The `diff' command uses the unified format now.  To restore the old
behavior, set `diff-switches' to `-c'.

834

Stefan Monnier's avatar
Stefan Monnier committed
835
* Lisp Changes in Emacs 25.1
836

837 838
** The default value of `load-read-function' is now `read'.

839 840
** New hook `pre-redisplay-functions', a bit easier to use than pre-redisplay-function.

841 842
** The second arg of `looking-back' should always be provided explicitly.

843 844 845 846 847
** Obsolete text properties `intangible', `point-entered', and `point-left'.
Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
implemented by the new `cursor-intangible-mode' and
`cursor-sensor-mode' minor modes.

848 849 850 851
** New process type `pipe', which can be used in combination with the
`:stderr' keyword of make-process to handle standard error output
of subprocess.

852 853 854 855 856
** New function `make-process' provides an alternative interface to
`start-process'.  It allows programs to set process parameters such as
process filter, sentinel, etc., through keyword arguments (similar to
`make-network-process').

857 858
** `read-buffer' takes a new `predicate' argument.

Daniel Colascione's avatar
Daniel Colascione committed
859 860
** Emacs Lisp now supports generators.

Daniel Colascione's avatar
Daniel Colascione committed
861 862 863
** New finalizer facility for running code when objects
   become unreachable.

864 865 866 867
** lexical closures can use (:documentation <form>) to build their docstring.
It should be placed right where the docstring would be, and <form> is then
evaluated (and should return a string) when the closure is built.

Stefan Monnier's avatar
Stefan Monnier committed
868 869
** define-inline provides a new way to define inlinable functions.

870 871
** New function macroexpand-1 to perform a single step of macroexpansion.

872 873
** Some "x-*" were obsoleted:
*** x-select-text is renamed gui-select-text.
874
*** x-selection-value is renamed gui-selection-value.
875 876 877 878
*** x-get-selection is renamed gui-get-selection.
*** x-get-clipboard and x-clipboard-yank are marked obsolete.
*** x-get-selection-value is renamed to gui-get-primary-selection.
*** x-set-selection is renamed to gui-set-selection
Stefan Monnier's avatar
Stefan Monnier committed
879

880
** New function `alist-get', which is also a valid place (aka lvalue).
881

882 883 884 885
** New function `funcall-interactively', which works like `funcall'
but makes `called-interactively-p' treat the function as (you guessed it)
called interactively.

886 887
** New function `function-put' to use instead of `put' for function properties.

888
+++
889
** New properties that can be specified with `declare':
Glenn Morris's avatar
Glenn Morris committed
890
*** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
891 892 893
*** (pure VAL), if VAL is non-nil, indicates the function is pure.
*** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
have side effects.
894

895 896 897 898
+++
** New macro `with-file-modes', for evaluating expressions with default file
permissions set to temporary values (e.g., for creating private files).

899
** You can access the slots of structures using `cl-struct-slot-value'.
Daniel Colascione's avatar
Daniel Colascione committed
900

901 902
** Function `sort' can deal with vectors.

903
** Function `system-name' now returns an updated value if the current
904 905 906
system's name has changed or if the Emacs process has changed systems,
and to avoid long waits it no longer consults DNS to canonicalize the
name.  The variable `system-name' is now obsolete.
907

908 909 910
+++
** Function `write-region' no longer outputs "Wrote FILE" in batch mode.

Simen Heggestøyl's avatar
Simen Heggestøyl committed
911 912 913
** If `pwd' is called with a prefix argument, insert the current default
directory at point.

914
---
915 916 917 918 919
** New utilities in subr-x.el:
*** New macros `if-let' and `when-let' allow defining bindings and to
    execute code depending whether all values are true.
*** New macros `thread-first' and `thread-last' allow threading a form
    as the first or last argument of subsequent forms.
920

921 922 923 924 925 926
** Documentation strings now support quoting with curved single quotes
‘like-this’ in addition to the old style with grave accent and
apostrophe `like-this'.  The new style looks better on today's displays.
When an old-style string is copied to a help buffer it is converted to
the new style.

927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945
+++
** Time-related changes:

*** Time-related functions now consistently accept numbers
(representing seconds since the epoch) and nil (representing the
current time) as well as the usual list-of-integer representation.
Affected functions include `current-time-string', `current-time-zone',
`decode-time', `float-time', `format-time-string', `seconds-to-time',
`time-add', `time-less-p', `time-subtract', `time-to-day-in-year',
`time-to-days', and `time-to-seconds'.

*** The `encode-time-value' and `with-decoded-time-value' macros have
been obsoleted.

*** `calendar-next-time-zone-transition', `time-add', and
`time-subtract' no longer return time values in the obsolete and
undocumented integer-pair format.  Instead, they return a list of two
integers.

946 947 948 949
+++
** New function `set-binary-mode' allows to switch a standard stream
of the Emacs process to binary I/O mode.

950 951 952 953 954 955
** In locales that cannot display curved quotes, ASCII approximations
are installed in standard-display-table.

** Standard output and error streams now transliterate characters via
standard-display-table, and encode output using locale-coding-system.

956 957 958 959 960 961
** Miscellaneous name change

For consistency with the usual Emacs spelling, the Lisp variable
`hfy-optimisations' has been renamed to `hfy-optimizations'.
The old name should still work, as an obsolescent alias.

962

Stefan Monnier's avatar
Stefan Monnier committed
963
* Changes in Frames and Windows Code in Emacs 25.1
964

965
+++
966
** Emacs can now draw horizontal scroll bars on some platforms that
967
provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
Martin Rudalics's avatar
Martin Rudalics committed
968
Horizontal scroll bars are turned off by default.
969 970
*** New function `horizontal-scroll-bars-available-p' telling whether
    horizontal scroll bars are available on the underlying system.
Martin Rudalics's avatar
Martin Rudalics committed
971 972
*** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
    bars on all existing and future frames.
973 974
*** New function `toggle-horizontal-scroll-bar' to toggle horizontal
    scroll bars on the selected frame.
Martin Rudalics's avatar
Martin Rudalics committed
975 976 977
*** New frame parameters `horizontal-scroll-bars' and
    `scroll-bar-height' to set horizontal scroll bars and their height
    for individual frames and in `default-frame-alist'.
978 979 980
*** New functions `frame-scroll-bar-height' and
    `window-scroll-bar-height' return the height of horizontal scroll
    bars on a specific frame or window.
Martin Rudalics's avatar
Martin Rudalics committed
981 982
*** `set-window-scroll-bars' now accepts five parameters where the last
    two specify height and type of the window's horizontal scroll bar.
983 984 985 986
*** `window-scroll-bars' now returns type and sizes of horizontal scroll
    bars too.
*** New buffer-local variables `horizontal-scroll-bar' and
    `scroll-bar-height'.
Martin Rudalics's avatar
Martin Rudalics committed
987

988
+++
Daniel Colascione's avatar
Daniel Colascione committed
989
** The height of a frame's menu and tool bar are no longer counted in the
Martin Rudalics's avatar
Martin Rudalics committed
990 991 992 993 994 995
frame's text height.  This means that the text height stands only for
the height of the frame's root window plus that of the echo area (if
present).  This was already the behavior for frames with external tool
and menu bars (like in the Gtk builds) but has now been extended to all
builds.

996
+++
Martin Rudalics's avatar
Martin Rudalics committed
997 998 999 1000 1001 1002 1003 1004 1005
** Frames now do not necessarily preserve the number of columns or lines
they display when setting default font, menu bar, fringe width, or
scroll bars.  In particular, maximized and fullscreen frames are
conceptually never resized if such settings change.  For fullheight and
fullwidth frames, the behavior may depend on the toolkit used.
*** New option `frame-inhibit-implied-resize' if non-nil, means that
   setting default font, menu bar, fringe width, or scroll bars of a
   specific frame does not resize that frame in order to preserve the
   number of columns or lines it displays.
1006

1007
+++
1008 1009 1010 1011
** New function `window-preserve-size' allows to preserve the size of
windows without "fixing" it.  It's supported by `fit-window-to-buffer',
`temp-buffer-resize-mode' and `display-buffer'.

1012 1013 1014 1015 1016
+++
** 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.

Jan Djärv's avatar
Jan Djärv committed
1017
** Tearoff menus and detachable toolbars for Gtk+ has been removed.
1018 1019
Those features have been deprecated in Gtk+ for a long time.

1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
** Miscellaneous

*** etags no longer qualifies class members by default.
By default, `etags' will not qualify class members for C-like
object-oriented languages with their class names and namespaces, and
will remove qualifications used explicitly in the code from the tag
names it puts in TAGS files.  This is so the etags.el back-end for
`xref-find-definitions' is more accurate and produces less false
positives.

Use --class-qualify (-Q) if you want the old default behavior of
qualifying class members in C++, Java, and Objective C.  Note that
using -Q might make some class members become "unknown" to `M-.'
(`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
qualified names by hand.

1036

Stefan Monnier's avatar
Stefan Monnier committed
1037
* Changes in Emacs 25.1 on Non-Free Operating Systems
1038

Glenn Morris's avatar
Glenn Morris committed
1039 1040 1041 1042 1043
---
** Building Emacs for MS-Windows requires at least Windows XP
or Windows Server 2003.  The built binaries still run on all versions
of Windows starting with Windows 9X.

1044 1045 1046
+++
** Emacs running on MS-Windows now supports the daemon mode.

1047 1048 1049
** The byte counts in etags-generated TAGS files are now the same on
MS-Windows as they are on other platforms.

1050 1051 1052
** OS X 10.5 or older is no longer supported.

** OS X on PowerPC is no longer supported.
Chong Yidong's avatar