NEWS 30.3 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

Glenn Morris's avatar
Glenn Morris committed
17
Temporary note:
Glenn Morris's avatar
Glenn Morris committed
18 19
+++ indicates that all necessary documentation updates are complete.
    (This means all relevant manuals in doc/ AND lisp doc-strings.)
20
--- means no change in the manuals is needed.
Glenn Morris's avatar
Glenn Morris committed
21
When you add a new item, use the appropriate mark if you are sure it applies,
22
otherwise leave it unmarked.
Glenn Morris's avatar
Glenn Morris committed
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

Paul Eggert's avatar
Paul Eggert committed
29 30
** Building Emacs now requires C99 or later.

Glenn Morris's avatar
Glenn Morris committed
31
** The variable `redisplay-dont-pause' is obsolete.
32

33
** Building Emacs now requires GNU make, version 3.81 or later.
Glenn Morris's avatar
Glenn Morris committed
34

35
+++
Glenn Morris's avatar
Glenn Morris committed
36 37 38
** `call-process-shell-command' and `process-file-shell-command'
don't take "&rest args" any more.

Paul Eggert's avatar
Paul Eggert committed
39 40 41 42 43 44 45
** 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.

Glenn Morris's avatar
Glenn Morris committed
46 47
** ERC

Paul Eggert's avatar
Paul Eggert committed
48 49 50
** 'configure' now prefers gnustep-config when configuring GNUstep.
If gnustep-config is not available, the old heuristics are used.

Glenn Morris's avatar
Glenn Morris committed
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
+++
*** New option `erc-rename-buffers'.

---
*** New faces `erc-my-nick-prefix-face' and `erc-nick-prefix-face'.

+++
*** `erc-format-@nick' displays all user modes instead of only op and voice.

---
*** The display of irc commands in the current buffer has been disabled.

---
*** `erc-version' now follows the Emacs version.

Glenn Morris's avatar
Glenn Morris committed
66 67
** Obsolete packages

68
---
Glenn Morris's avatar
Glenn Morris committed
69
*** cc-compat.el
70

71 72
---
** The configure option `--with-pkg-config-prog' has been removed.
73
Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
74

75 76 77 78
** 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'.
79

80 81 82 83 84
---
** 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
85
be installed setgid.  The option now defaults to the 'games' group.
86

Glenn Morris's avatar
Glenn Morris committed
87 88 89 90 91
---
** 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.

92

Stefan Monnier's avatar
Stefan Monnier committed
93
* Startup Changes in Emacs 25.1
94 95


Stefan Monnier's avatar
Stefan Monnier committed
96
* Changes in Emacs 25.1
97

98 99
** New command `comment-line' bound to `C-x C-;'.

100 101 102
** New function `custom-prompt-customize-unsaved-options' checks for
unsaved customizations and prompts user to customize (if found).

103
+++
104 105 106 107
** 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.

108 109
** C-h l now also lists the commands that were run.

110
---
111
** The new M-s M-w key binding uses eww to search the web for the
112 113
text in the region.

114
** M-x suggests shorthands and ignores obsolete commands for completion.
115 116 117 118 119 120
** 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
121

122 123 124
+++
** terpri gets an optional arg ENSURE to conditionally output a newline.

Leo Liu's avatar
Leo Liu committed
125 126 127
+++
** New macro `define-advice'.

128 129
** `insert-register' now leaves point after the inserted text
when called interactively.  A prefix argument toggles this behavior.
130

131 132
** New var `truncate-string-ellipsis' to choose how to indicate truncation.

133 134 135 136 137
+++
** 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.

138 139 140 141 142
---
** 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.

143 144 145 146 147
+++
** 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'.

148 149
** The new functions `string-collate-lessp' and `string-collate-equalp'
preserve the collation order as defined by the system's locale(1)
150 151 152
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'.
153

154 155 156 157 158 159 160 161 162 163 164
*** 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.

165 166 167 168 169 170 171
+++
** 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.

172 173 174 175 176 177 178
+++
** 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.

179 180 181 182 183
** 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.

184
** A new text property `inhibit-read-only' can be used in read-only
185 186
buffers to allow certain parts of the text to be writable.

187 188 189
** A new function `directory-files-recursively' returns all matching
files (recursively) under a directory.

190 191 192 193 194
** The new `directory-name-p' can be used to check whether a file
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.

195 196 197 198 199 200
+++
** 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.

201 202 203 204
** 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.

205

Stefan Monnier's avatar
Stefan Monnier committed
206
* Editing Changes in Emacs 25.1
207

208 209
** Unicode names entered via C-x 8 RET now use substring completion by default.

210 211
** New minor mode global-eldoc-mode is enabled by default.

Glenn Morris's avatar
Glenn Morris committed
212
** Emacs now supports "bracketed paste mode" when running on a terminal
213
that supports it.  This facility allows Emacs to understand pasted
Glenn Morris's avatar
Glenn Morris committed
214 215 216
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
217 218
performance improvements when pasting large amounts of text.

Eli Zaretskii's avatar
Eli Zaretskii committed
219 220 221 222 223 224 225 226
** 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.

227 228
** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.

229

Stefan Monnier's avatar
Stefan Monnier committed
230
* Changes in Specialized Modes and Packages in Emacs 25.1
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248
** package.el
*** `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.

249 250 251 252
** Shell

When you invoke `shell' interactively, the *shell* buffer will now
display in a new window.  However, you can customize this behavior via
253
the `display-buffer-alist' variable.  For example, to get
254
the old behavior -- *shell* buffer displays in current window -- use
255 256
(add-to-list 'display-buffer-alist
     '("^\\*shell\\*$" . (display-buffer-same-window))).
257

258 259

** EIEIO
260
*** The `:protection' slot option is not obeyed any more.
261 262
*** The `newname' argument to constructors is optional&deprecated.
If you need your objects to be named, do it by inheriting from `eieio-named'.
263 264 265
*** The <class>-list-p and <class>-child-p functions are declared obsolete.
*** The <class> variables are declared obsolete.
*** The <initarg> variables are declared obsolete.
266
*** defgeneric and defmethod are declared obsolete.
267
*** `constructor' is now an obsolete alias for `make-instance'.
268

269 270 271 272
** 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.
273

274 275 276 277 278 279 280 281
** 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'.

282 283
** Search and Replace

284 285 286 287 288 289 290 291
*** 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.
292

293 294 295 296 297
** Calc
+++
*** If `quick-calc' is called with a prefix argument, insert the
result of the calculation into the current buffer.

298
** ElDoc
299 300 301 302 303 304
*** 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.
305

306 307
** eww

308 309 310 311 312 313 314 315
---
*** 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.

316
+++
317 318 319 320
*** 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.

321
---
322 323 324
*** You can now use several eww buffers in parallel by renaming eww
buffers you want to keep separate.

325
+++
Ivan Shmakov's avatar
Ivan Shmakov committed
326 327 328
*** Partial state of the eww buffers (the URIs and the titles of the
pages visited) is now preserved in the desktop file.

329
+++
330 331 332
*** `eww-after-render-hook' is now called after eww has rendered
the data in the buffer.

333 334 335 336
---
*** The `eww-reload' command now takes a prefix to not reload via
the net, but just use the local copy of the HTML.

337
+++
338 339 340 341 342
*** 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.

343
+++
344 345
*** `mailcap-mime-data' is now consulted when displaying PDF files.

346 347 348 349
+++
*** The new `S' command will list all eww buffers, and allow managing
them.

350 351 352 353
---
*** https pages with valid certificates have headers marked in green, while
invalid certificates are marked in red.

354 355 356 357 358
** Message mode

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

359 360
** pcase
*** New UPatterns `quote' and `app'.
361
*** New UPatterns can be defined with `pcase-defmacro'.
362 363
+++
*** New vector QPattern.
364

365 366 367
** Lisp mode
*** Strings after `:documentation' are highlighted as docstrings.

368 369 370 371
** 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.
372

Glenn Morris's avatar
Glenn Morris committed
373 374
** 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.
375

376 377 378
** Macro `minibuffer-with-setup-hook' takes (:append FUN) to mean
appending FUN to `minibuffer-setup-hook'.

379 380 381
** cl-lib
*** New functions cl-fresh-line, cl-digit-char-p and cl-parse-integer.

382 383 384 385 386 387
** 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.

388 389 390 391 392
** 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
393
`diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
394 395

+++
396
*** The calendar can now list and mark diary entries with Chinese dates.
Glenn Morris's avatar
Glenn Morris committed
397 398
See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.

399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415
---
*** 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}'.
416

417 418
**** The nil and list forms of `diary-display-function'.

419 420
** New ERT function `ert-summarize-tests-batch-and-exit'.

421 422 423
---
** `Info-fontify-maximum-menu-size' can be t for no limit.

424 425 426 427 428
+++
** `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.

429 430 431
---
** ntlm.el has support for NTLM2.

Glenn Morris's avatar
Glenn Morris committed
432 433 434 435
---
** The Rmail commands d, C-d and u now handle repeat counts to delete or
undelete multiple messages.

436 437 438 439 440 441
** Rmail can now render HTML mail messages if your Emacs was built with
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.

Glenn Morris's avatar
Glenn Morris committed
442
** SES now supports local printer functions; see `ses-define-local-printer'.
443

Glenn Morris's avatar
Glenn Morris committed
444 445 446
** 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).

447 448 449 450
** TLS
---
*** Fatal TLS errors are now silent by default.

451 452 453
** URL

*** The URL package accepts now the protocols "ssh", "scp" and "rsync".
454 455 456
When `url-handler-mode' is enabled, file operations for these
protocols as well as for "telnet" and "ftp" are passed to Tramp.

457
*** The URL package allows customizing the `url-user-agent' string.
458 459 460
The new `url-user-agent' variable can be customized to be a string or
a function.

461 462 463 464
*** 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.

465 466 467 468
*** 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).

469 470 471 472
** Tramp

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

473 474 475 476 477 478 479 480 481
** 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
482 483
*** Add support for Vertica SQL.

484 485
** VC and related modes

486 487
*** The new command vc-region-history shows the log+diff of the active region.

488 489 490 491
*** 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.

492
*** `compare-windows' now compares text with the most recently used window
493 494 495
instead of the next window.  The new option `compare-windows-get-window-function'
allows to customize this.

496 497 498
*** Two new faces `compare-windows-removed' and `compare-windows-added'
replace the obsolete face `compare-windows'.

499 500
** VHDL mode supports VHDL'08.

501 502 503 504
** Calculator: decimal display mode uses "," groups, so it's more
fitting for use in money calculations; factorial works with
non-integer inputs.

505 506 507 508 509 510 511 512 513 514
** HideIfDef mode now support full C/C++ expressions, argumented macro expansions
, interactive macro evaluation and automatic scanning of #defined symbols.

*** 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.

515 516 517 518 519
** TeX mode

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

520 521 522 523
** 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.

524 525 526 527 528
** 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.
529

530 531 532 533 534 535
** 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
536
to pick one destination among several.  Hence, `tags-loop-continue' is
537 538 539 540 541 542 543 544 545 546 547 548
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.

549 550 551 552 553
** 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'.

554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585
** 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>".

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

586 587 588 589
+++
** tar-mode: new `tar-new-entry' command, allowing for new members to
be added to the archive.

590 591 592
** 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
593 594 595 596 597
** Obsolete packages

---
*** gulp.el

598

Stefan Monnier's avatar
Stefan Monnier committed
599
* New Modes and Packages in Emacs 25.1
600

601 602
** cl-generic.el provides CLOS-style multiple-dispatch generic functions.

603
** scss-mode (a minor variant of css-mode)
604 605 606 607

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

608 609 610 611 612
** `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.
613

Stefan Monnier's avatar
Stefan Monnier committed
614
* Incompatible Lisp Changes in Emacs 25.1
615

Stefan Monnier's avatar
Stefan Monnier committed
616 617 618 619 620
** 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'.

Glenn Morris's avatar
Glenn Morris committed
621
** window-configurations no longer record the buffers's marks.
622

Glenn Morris's avatar
Glenn Morris committed
623
** inhibit-modification-hooks now also inhibits lock-file checks, as well as
624 625
active region handling.

626 627
** deactivate-mark is now buffer-local.

Glenn Morris's avatar
Glenn Morris committed
628
** `cl-the' now asserts that its argument is of the given type.
629

630 631 632 633 634
+++
** 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.

635 636 637
** 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.
638

639 640 641 642 643
** 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.

644 645 646 647 648 649
+++
** 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.

650

Stefan Monnier's avatar
Stefan Monnier committed
651
* Lisp Changes in Emacs 25.1
652

Daniel Colascione's avatar
Daniel Colascione committed
653 654
** Emacs Lisp now supports generators.

Daniel Colascione's avatar
Daniel Colascione committed
655 656 657
** New finalizer facility for running code when objects
   become unreachable.

658 659 660 661
** 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
662 663
** define-inline provides a new way to define inlinable functions.

664 665
** New function macroexpand-1 to perform a single step of macroexpansion.

666 667
** Some "x-*" were obsoleted:
*** x-select-text is renamed gui-select-text.
668
*** x-selection-value is renamed gui-selection-value.
669 670 671 672
*** 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
673

674
** New function `alist-get', which is also a valid place (aka lvalue).
675

676 677 678 679
** New function `funcall-interactively', which works like `funcall'
but makes `called-interactively-p' treat the function as (you guessed it)
called interactively.

680 681
** New function `function-put' to use instead of `put' for function properties.

682
+++
683
** New properties that can be specified with `declare':
Glenn Morris's avatar
Glenn Morris committed
684
*** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
685 686 687
*** (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.
688

689 690 691 692
+++
** New macro `with-file-modes', for evaluating expressions with default file
permissions set to temporary values (e.g., for creating private files).

693
** You can access the slots of structures using `cl-struct-slot-value'.
Daniel Colascione's avatar
Daniel Colascione committed
694

695 696 697
** Functions `rmail-delete-forward' and `rmail-delete-backward' take an
optional repeat-count argument.

698 699
** Function `sort' can deal with vectors.

700
** Function `system-name' now returns an updated value if the current
701 702 703
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.
704

705 706 707
+++
** Function `write-region' no longer outputs "Wrote FILE" in batch mode.

708
---
709 710 711 712 713
** 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.
714

715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733
+++
** 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.

734 735 736 737
+++
** New function `set-binary-mode' allows to switch a standard stream
of the Emacs process to binary I/O mode.

738

Stefan Monnier's avatar
Stefan Monnier committed
739
* Changes in Frames and Windows Code in Emacs 25.1
740

741
+++
742
** Emacs can now draw horizontal scroll bars on some platforms that
743
provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
Martin Rudalics's avatar
Martin Rudalics committed
744
Horizontal scroll bars are turned off by default.
745 746
*** 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
747 748
*** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
    bars on all existing and future frames.
749 750
*** New function `toggle-horizontal-scroll-bar' to toggle horizontal
    scroll bars on the selected frame.
Martin Rudalics's avatar
Martin Rudalics committed
751 752 753
*** 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'.
754 755 756
*** 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
757 758
*** `set-window-scroll-bars' now accepts five parameters where the last
    two specify height and type of the window's horizontal scroll bar.
759 760 761 762
*** `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
763

764
+++
Daniel Colascione's avatar
Daniel Colascione committed
765
** The height of a frame's menu and tool bar are no longer counted in the
Martin Rudalics's avatar
Martin Rudalics committed
766 767 768 769 770 771
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.

772
+++
Martin Rudalics's avatar
Martin Rudalics committed
773 774 775 776 777 778 779 780 781
** 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.
782

783
+++
784 785 786 787
** 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'.

Jan Djärv's avatar
Jan Djärv committed
788
** Tearoff menus and detachable toolbars for Gtk+ has been removed.
789 790
Those features have been deprecated in Gtk+ for a long time.

791

Stefan Monnier's avatar
Stefan Monnier committed
792
* Changes in Emacs 25.1 on Non-Free Operating Systems
793

Glenn Morris's avatar
Glenn Morris committed
794 795 796 797 798
---
** 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.

799 800 801
+++
** Emacs running on MS-Windows now supports the daemon mode.

802 803 804
** OS X 10.5 or older is no longer supported.

** OS X on PowerPC is no longer supported.
805

806

Dave Love's avatar
#  
Dave Love committed
807
----------------------------------------------------------------------
808
This file is part of GNU Emacs.
Dave Love's avatar
#  
Dave Love committed
809

810
GNU Emacs is free software: you can redistribute it and/or modify
811
it under the terms of the GNU General Public License as published by
812 813
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
814 815 816 817 818

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
Dave Love's avatar
#  
Dave Love committed
819

820
You should have received a copy of the GNU General Public License
821
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
Dave Love's avatar
#  
Dave Love committed
822

823

Dave Love's avatar
#  
Dave Love committed
824
Local variables:
825
coding: utf-8
Dave Love's avatar
#  
Dave Love committed
826 827 828
mode: outline
paragraph-separate: "[ 	]*$"
end: