NEWS 18.5 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

3
Copyright (C) 2014 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 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.

39 40
---
** The configure option `--with-pkg-config-prog' has been removed.
41
Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
42

43 44 45
** The configure option '--enable-silent-rules' and the command
'make V=0' now do a better job of suppressing chatter.

46

Stefan Monnier's avatar
Stefan Monnier committed
47
* Startup Changes in Emacs 25.1
48 49


Stefan Monnier's avatar
Stefan Monnier committed
50
* Changes in Emacs 25.1
51

52 53
** C-h l now also lists the commands that were run.

54
** The new M-s M-w key binding uses eww to search the web for the
55 56
text in the region.

57
** M-x suggests shorthands and ignores obsolete commands for completion.
58 59 60 61 62 63
** 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
64

65 66 67
+++
** terpri gets an optional arg ENSURE to conditionally output a newline.

Leo Liu's avatar
Leo Liu committed
68 69 70
+++
** New macro `define-advice'.

71 72
** `insert-register' now leaves point after the inserted text
when called interactively.  A prefix argument toggles this behavior.
73

74 75
** New var `truncate-string-ellipsis' to choose how to indicate truncation.

76 77 78 79 80
+++
** 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.

81 82 83 84 85
---
** 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.

86 87 88 89 90
+++
** 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'.

91 92
** The new functions `string-collate-lessp' and `string-collate-equalp'
preserve the collation order as defined by the system's locale(1)
93 94 95
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'.
96

97 98 99 100
*** 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.

101 102 103 104 105 106 107
*** 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.

108 109 110 111 112
** 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.

113 114 115
*** A new text property `inhibit-read-only' can be used in read-only
buffers to allow certain parts of the text to be writable.

116

Stefan Monnier's avatar
Stefan Monnier committed
117
* Editing Changes in Emacs 25.1
118

119 120
** New minor mode global-eldoc-mode is enabled by default.

Glenn Morris's avatar
Glenn Morris committed
121
** Emacs now supports "bracketed paste mode" when running on a terminal
122
that supports it.  This facility allows Emacs to understand pasted
Glenn Morris's avatar
Glenn Morris committed
123 124 125
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
126 127
performance improvements when pasting large amounts of text.

Eli Zaretskii's avatar
Eli Zaretskii committed
128 129 130 131 132 133 134 135
** 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.

136

Stefan Monnier's avatar
Stefan Monnier committed
137
* Changes in Specialized Modes and Packages in Emacs 25.1
138 139 140 141
** 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.
142

143 144 145 146 147 148 149 150
** 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'.

151 152
** Search and Replace

153 154 155 156 157 158 159 160
*** 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.
161

162 163 164 165 166
** Calc
+++
*** If `quick-calc' is called with a prefix argument, insert the
result of the calculation into the current buffer.

167 168 169 170
** ElDoc
*** New minor mode global-eldoc-mode
*** eldoc-documentation-function now defaults to nil

171 172 173 174 175 176
** eww

*** 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.

177 178 179
*** You can now use several eww buffers in parallel by renaming eww
buffers you want to keep separate.

180 181 182
*** `eww-after-render-hook' is now called after eww has rendered
the data in the buffer.

183 184 185 186 187
** Message mode

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

188 189
** pcase
*** New UPatterns `quote' and `app'.
190
*** New UPatterns can be defined with `pcase-defmacro'.
191 192
+++
*** New vector QPattern.
193

194 195 196
** Lisp mode
*** Strings after `:documentation' are highlighted as docstrings.

197 198 199 200
** 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.
201

Glenn Morris's avatar
Glenn Morris committed
202 203
** 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.
204

205 206 207
** Macro `minibuffer-with-setup-hook' takes (:append FUN) to mean
appending FUN to `minibuffer-setup-hook'.

208 209 210
** cl-lib
*** New functions cl-fresh-line, cl-digit-char-p and cl-parse-integer.

211 212 213 214 215
** 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
216
`diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
217 218

+++
219
*** The calendar can now list and mark diary entries with Chinese dates.
Glenn Morris's avatar
Glenn Morris committed
220 221
See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.

222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238
---
*** 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}'.
239

240 241
**** The nil and list forms of `diary-display-function'.

242 243
** New ERT function `ert-summarize-tests-batch-and-exit'.

244 245 246
---
** `Info-fontify-maximum-menu-size' can be t for no limit.

247 248 249
---
** ntlm.el has support for NTLM2.

Glenn Morris's avatar
Glenn Morris committed
250 251 252 253
---
** The Rmail commands d, C-d and u now handle repeat counts to delete or
undelete multiple messages.

254 255 256 257 258 259
** 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
260
** SES now supports local printer functions; see `ses-define-local-printer'.
261

Glenn Morris's avatar
Glenn Morris committed
262 263 264
** 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).

265 266 267 268
** The URL package accepts now the protocols "ssh", "scp" and "rsync".
When `url-handler-mode' is enabled, file operations for these
protocols as well as for "telnet" and "ftp" are passed to Tramp.

269 270 271 272
** The URL package allows customizing the `url-user-agent' string.
The new `url-user-agent' variable can be customized to be a string or
a function.

273 274 275 276
** Tramp

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

277 278 279 280 281 282 283 284 285
** 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
286 287
*** Add support for Vertica SQL.

288 289
** VC and related modes

290 291
*** The new command vc-region-history shows the log+diff of the active region.

292 293 294 295
*** 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.

296 297 298 299
** Calculator: decimal display mode uses "," groups, so it's more
fitting for use in money calculations; factorial works with
non-integer inputs.

300 301 302 303 304 305 306 307 308 309
** 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.

310 311 312 313 314
** TeX mode

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

315 316 317 318
** 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.

319 320 321 322 323
** 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.
324

Glenn Morris's avatar
Glenn Morris committed
325 326 327 328 329
** Obsolete packages

---
*** gulp.el

330

Stefan Monnier's avatar
Stefan Monnier committed
331
* New Modes and Packages in Emacs 25.1
332

333
** scss-mode (a minor variant of css-mode)
334

Stefan Monnier's avatar
Stefan Monnier committed
335
* Incompatible Lisp Changes in Emacs 25.1
336

Glenn Morris's avatar
Glenn Morris committed
337
** window-configurations no longer record the buffers's marks.
338

Glenn Morris's avatar
Glenn Morris committed
339
** inhibit-modification-hooks now also inhibits lock-file checks, as well as
340 341
active region handling.

342 343
** deactivate-mark is now buffer-local.

Glenn Morris's avatar
Glenn Morris committed
344
** `cl-the' now asserts that its argument is of the given type.
345

346 347 348 349 350
+++
** 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.

351 352 353
** 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.
354

355

Stefan Monnier's avatar
Stefan Monnier committed
356
* Lisp Changes in Emacs 25.1
357

358 359
** New function macroexpand-1 to perform a single step of macroexpansion.

360 361
** Some "x-*" were obsoleted:
*** x-select-text is renamed gui-select-text.
362
*** x-selection-value is renamed gui-selection-value.
363 364 365 366
*** 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
367

368
** New function `alist-get', which is also a valid place (aka lvalue).
369

370 371 372 373
** New function `funcall-interactively', which works like `funcall'
but makes `called-interactively-p' treat the function as (you guessed it)
called interactively.

374 375
** New function `function-put' to use instead of `put' for function properties.

376
+++
377
** New properties that can be specified with `declare':
Glenn Morris's avatar
Glenn Morris committed
378
*** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
379 380 381
*** (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.
382

383 384 385 386
+++
** New macro `with-file-modes', for evaluating expressions with default file
permissions set to temporary values (e.g., for creating private files).

387
** You can access the slots of structures using `cl-struct-slot-value'.
Daniel Colascione's avatar
Daniel Colascione committed
388

389 390 391
** Functions `rmail-delete-forward' and `rmail-delete-backward' take an
optional repeat-count argument.

392 393
** Function `sort' can deal with vectors.

394
---
395 396 397 398 399
** 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.
400

401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419
+++
** 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.

420

Stefan Monnier's avatar
Stefan Monnier committed
421
* Changes in Frames and Windows Code in Emacs 25.1
422

423
+++
424
** Emacs can now draw horizontal scroll bars on some platforms that
425
provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
Martin Rudalics's avatar
Martin Rudalics committed
426
Horizontal scroll bars are turned off by default.
427 428
*** 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
429 430
*** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
    bars on all existing and future frames.
431 432
*** New function `toggle-horizontal-scroll-bar' to toggle horizontal
    scroll bars on the selected frame.
Martin Rudalics's avatar
Martin Rudalics committed
433 434 435
*** 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'.
436 437 438
*** 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
439 440
*** `set-window-scroll-bars' now accepts five parameters where the last
    two specify height and type of the window's horizontal scroll bar.
441 442 443 444
*** `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
445

446
+++
Martin Rudalics's avatar
Martin Rudalics committed
447 448 449 450 451 452 453
** The height of a frame's menu and tool bar are no more counted in the
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.

454
+++
Martin Rudalics's avatar
Martin Rudalics committed
455 456 457 458 459 460 461 462 463
** 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.
464

Jan Djärv's avatar
Jan Djärv committed
465
** Tearoff menus and detachable toolbars for Gtk+ has been removed.
466 467
Those features have been deprecated in Gtk+ for a long time.

468

Stefan Monnier's avatar
Stefan Monnier committed
469
* Changes in Emacs 25.1 on Non-Free Operating Systems
470

Glenn Morris's avatar
Glenn Morris committed
471 472 473 474 475
---
** 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.

476 477 478
** OS X 10.5 or older is no longer supported.

** OS X on PowerPC is no longer supported.
479

480

Dave Love's avatar
#  
Dave Love committed
481
----------------------------------------------------------------------
482
This file is part of GNU Emacs.
Dave Love's avatar
#  
Dave Love committed
483

484
GNU Emacs is free software: you can redistribute it and/or modify
485
it under the terms of the GNU General Public License as published by
486 487
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
488 489 490 491 492

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
493

494
You should have received a copy of the GNU General Public License
495
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
Dave Love's avatar
#  
Dave Love committed
496

497

Dave Love's avatar
#  
Dave Love committed
498
Local variables:
499
coding: utf-8
Dave Love's avatar
#  
Dave Love committed
500 501 502
mode: outline
paragraph-separate: "[ 	]*$"
end: