1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2014 Free Software Foundation, Inc.
4 See the end of the file for license conditions.
6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
7 If possible, use M-x report-emacs-bug.
9 This file is about changes in Emacs version 25.
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.
14 You can narrow news to a specific version by calling `view-emacs-news'
15 with a prefix argument or by typing C-u C-h C-n.
18 +++ indicates that all necessary documentation updates are complete.
19 (This means all relevant manuals in doc/ AND lisp doc-strings.)
20 --- means no change in the manuals is needed.
21 When you add a new item, use the appropriate mark if you are sure it applies,
22 otherwise leave it unmarked.
25 * Installation Changes in Emacs 25.1
28 ** Building Emacs now requires C99 or later.
30 ** Building Emacs now requires GNU make, version 3.81 or later.
32 ** By default, Emacs no longer works on IRIX. We expect that Emacs
33 users are not affected by this, as SGI stopped supporting IRIX in
34 December 2013. If you are affected, please send a bug report. You
35 should be able to work around the problem either by porting the Emacs
36 undumping code to GCC under IRIX, or by configuring --with-wide-int,
37 or by sticking with Emacs 24.4.
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.
43 ** The configure option '--enable-silent-rules' and the command
44 'make V=0' now do a better job of suppressing chatter.
47 * Startup Changes in Emacs 25.1
50 * Changes in Emacs 25.1
52 ** x-select-enable-clipboard is renamed gui-select-enable-clipboard.
53 Additionally it now also applies to OSX and GNUstep.
55 ** `insert-register' now leaves point after the inserted text
56 when called interactively. A prefix argument toggles this behavior.
58 ** New var `truncate-string-ellipsis' to choose how to indicate truncation.
61 ** The default value of `history-length' has increased to 100.
64 ** The new variable `term-file-aliases' replaces some files from lisp/term.
65 The function `tty-run-terminal-initialization' consults this variable
66 when deciding what terminal-specific initialization code to run.
69 ** New variable `system-configuration-features', listing some of the
70 main features that Emacs was compiled with. This is mainly intended
71 for use in Emacs bug reports.
74 ** A password is now hidden also when typed in batch mode. Another
75 hiding character but the default `.' can be used by let-binding the
76 variable `read-hide-char'.
78 ** The new functions `string-collate-lessp' and `string-collate-equalp'
79 preserve the collation order as defined by the system's locale(1)
80 environment. For the time being this is implemented for modern POSIX
81 systems and for MS-Windows, for other systems they fall back to their
82 counterparts `string-lessp' and `string-equal'.
84 *** The ls-lisp package uses `string-collate-lessp' to sort file names.
85 If you want the old, locale-independent sorting, customize the new
86 option `ls-lisp-use-string-collate' to a nil value.
88 *** The MS-Windows specific variable `w32-collate-ignore-punctuation',
89 if set to a non-nil value, causes the above 2 functions to ignore
90 symbol and punctuation characters when collating strings. This
91 emulates the behavior of modern Posix platforms when the locale's
92 codeset is "UTF-8" (as in "en_US.UTF-8"). This is needed because
93 MS-Windows doesn't support UTF-8 as codeset in its locales.
95 ** New variable `ns-use-fullscreen-animation' controls animation for
96 non-native NS fullscreen. The default is nil. Set to t to enable
97 animation when entering and leaving fullscreen. For native OSX fullscreen
101 * Editing Changes in Emacs 25.1
103 ** Emacs now supports "bracketed paste mode" when running on a terminal
104 that supports it. This facility allows Emacs to understand pasted
105 chunks of text as strings to be inserted, instead of interpreting each
106 character in the pasted text as actual user input. This results in a
107 paste experience similar to that under a window system, and significant
108 performance improvements when pasting large amounts of text.
111 * Changes in Specialized Modes and Packages in Emacs 25.1
114 *** New minor mode global-eldoc-mode
115 *** eldoc-documentation-function now defaults to nil
118 *** New UPatterns `quote' and `app'.
119 *** New UPatterns can be defined with `pcase-defmacro'.
122 *** Strings after `:documentation' are highlighted as docstrings.
125 *** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
126 *** C-x C-x in rectangle-mark-mode now cycles through the four corners.
127 *** `string-rectangle' provides on-the-fly preview of the result.
130 ** Macro `pcase' now supports vector qpattern.
132 ** New font-lock functions font-lock-ensure and font-lock-flush, which
133 should be used instead of font-lock-fontify-buffer when called from Elisp.
135 ** Macro `minibuffer-with-setup-hook' takes (:append FUN) to mean
136 appending FUN to `minibuffer-setup-hook'.
138 ** Calendar and diary
141 *** New commands to insert diary entries with Chinese dates:
142 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
143 `diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
146 *** The calendar can now list and mark diary entries with Chinese dates.
147 See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
150 *** The option `calendar-mode-line-format' can now be nil,
151 which means to do nothing special with the mode line in calendars.
154 *** Many items obsolete since at least version 23.1 have been removed.
155 The majority were function/variable/face aliases, too numerous to list here.
158 **** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
159 `calendar-two-frame-setup', `european-calendar', `american-calendar'.
161 **** Hooks `cal-menu-load-hook', `cal-x-load-hook'.
163 **** Macro `calendar-for-loop'.
165 **** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
167 ** New ERT function `ert-summarize-tests-batch-and-exit'.
170 ** ntlm.el has support for NTLM2.
173 ** The Rmail commands d, C-d and u now handle repeat counts to delete or
174 undelete multiple messages.
176 ** Rmail can now render HTML mail messages if your Emacs was built with
177 libxml2 or if you have the Lynx browser installed. By default, Rmail
178 will display the HTML version of a mail message that has both HTML and
179 plain text parts, if display of HTML email is possible; customize the
180 `rmail-mime-prefer-html' option to `nil' if you don't want that.
182 ** SES now supports local printer functions; see `ses-define-local-printer'.
184 ** In sh-mode, you can now use `sh-shell' as a file-local variable to
185 specify the type of shell in use (bash, csh, etc).
187 ** The URL package accepts now the protocols "ssh", "scp" and "rsync".
188 When `url-handler-mode' is enabled, file operations for these
189 protocols as well as for "telnet" and "ftp" are passed to Tramp.
193 *** New connection method "nc", which allows to access dumb busyboxes.
197 *** New user variable `sql-default-directory' enables remote
198 connections using Tramp.
200 *** New command `sql-send-line-and-next' sends the current line to the
201 interactive buffer and advances to the next line, skipping whitespace
204 *** Add support for Vertica SQL.
206 ** VC and related modes
208 *** New option `vc-annotate-background-mode' controls whether
209 the color range from `vc-annotate-color-map' is applied to the
210 background or to the foreground.
212 ** Calculator: decimal display mode uses "," groups, so it's more
213 fitting for use in money calculations; factorial works with
216 ** HideIfDef mode now support full C/C++ expressions, argumented macro expansions
217 , interactive macro evaluation and automatic scanning of #defined symbols.
219 *** New custom variable `hide-ifdef-header-regexp' to define C/C++ header file
220 name patterns. Default case-insensitive .h, .hh, .hpp and .hxx.
221 *** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
222 reinclusion protected header files from being fully hidden.
223 *** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
224 name patterns (e.x. all "FOR_DOXYGEN_ONLY_*") to be excluded.
228 *** New custom variable `tex-print-file-extension' to help users who
229 use PDF instead of DVI.
237 *** crisp.el, tpu-edt.el, ws-mode.el
238 These emulations of old editors are believed to be no longer relevant
239 - contact emacs-devel@gnu.org if you disagree.
242 *** vi.el, vip.el (try M-x viper instead)
245 * New Modes and Packages in Emacs 25.1
248 * Incompatible Lisp Changes in Emacs 25.1
250 ** window-configurations no longer record the buffers's marks.
252 ** inhibit-modification-hooks now also inhibits lock-file checks, as well as
253 active region handling.
255 ** deactivate-mark is now buffer-local.
257 ** `cl-the' now asserts that its argument is of the given type.
260 ** Mouse click events on mode line or header line no longer include
261 any reference to a buffer position. The 6th member of the mouse
262 position list returned for such events is now nil.
264 ** Menu items in keymaps do not support the "key shortcut cache" any more.
265 These slots used to hold key-shortcut data, but have been obsolete since
269 * Lisp Changes in Emacs 25.1
271 ** Some "x-*" were obsoleted:
272 *** x-select-text is renamed gui-select-text.
273 *** x-selection-value is renamed gui-selection-value.
274 *** x-get-selection is renamed gui-get-selection.
275 *** x-get-clipboard and x-clipboard-yank are marked obsolete.
276 *** x-get-selection-value is renamed to gui-get-primary-selection.
277 *** x-set-selection is renamed to gui-set-selection
279 ** call-process-shell-command and process-file-shell-command
280 don't take "&rest args" any more.
282 ** New function `alist-get', which is also a valid place (aka lvalue).
284 ** New function `funcall-interactively', which works like `funcall'
285 but makes `called-interactively-p' treat the function as (you guessed it)
286 called interactively.
288 ** New function `function-put' to use instead of `put' for function properties.
291 ** New properties that can be specified with `declare':
292 *** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
293 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
294 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
298 ** New macro `with-file-modes', for evaluating expressions with default file
299 permissions set to temporary values (e.g., for creating private files).
301 ** You can access the slots of structures using `cl-struct-slot-value'.
303 ** Functions `rmail-delete-forward' and `rmail-delete-backward' take an
304 optional repeat-count argument.
306 ** Function `sort' can deal with vectors.
309 ** New utilities in subr-x.el:
310 *** New macros `if-let' and `when-let' allow defining bindings and to
311 execute code depending whether all values are true.
312 *** New macros `thread-first' and `thread-last' allow threading a form
313 as the first or last argument of subsequent forms.
316 * Changes in Frames and Windows Code in Emacs 25.1
319 ** Emacs can now draw horizontal scroll bars on some platforms that
320 provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
321 Horizontal scroll bars are turned off by default.
322 *** New function `horizontal-scroll-bars-available-p' telling whether
323 horizontal scroll bars are available on the underlying system.
324 *** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
325 bars on all existing and future frames.
326 *** New function `toggle-horizontal-scroll-bar' to toggle horizontal
327 scroll bars on the selected frame.
328 *** New frame parameters `horizontal-scroll-bars' and
329 `scroll-bar-height' to set horizontal scroll bars and their height
330 for individual frames and in `default-frame-alist'.
331 *** New functions `frame-scroll-bar-height' and
332 `window-scroll-bar-height' return the height of horizontal scroll
333 bars on a specific frame or window.
334 *** `set-window-scroll-bars' now accepts five parameters where the last
335 two specify height and type of the window's horizontal scroll bar.
336 *** `window-scroll-bars' now returns type and sizes of horizontal scroll
338 *** New buffer-local variables `horizontal-scroll-bar' and
341 ** The height of a frame's menu and tool bar are no more counted in the
342 frame's text height. This means that the text height stands only for
343 the height of the frame's root window plus that of the echo area (if
344 present). This was already the behavior for frames with external tool
345 and menu bars (like in the Gtk builds) but has now been extended to all
348 ** Frames now do not necessarily preserve the number of columns or lines
349 they display when setting default font, menu bar, fringe width, or
350 scroll bars. In particular, maximized and fullscreen frames are
351 conceptually never resized if such settings change. For fullheight and
352 fullwidth frames, the behavior may depend on the toolkit used.
353 *** New option `frame-inhibit-implied-resize' if non-nil, means that
354 setting default font, menu bar, fringe width, or scroll bars of a
355 specific frame does not resize that frame in order to preserve the
356 number of columns or lines it displays.
359 * Changes in Emacs 25.1 on Non-Free Operating Systems
362 ** Building Emacs for MS-Windows requires at least Windows XP
363 or Windows Server 2003. The built binaries still run on all versions
364 of Windows starting with Windows 9X.
368 ----------------------------------------------------------------------
369 This file is part of GNU Emacs.
371 GNU Emacs is free software: you can redistribute it and/or modify
372 it under the terms of the GNU General Public License as published by
373 the Free Software Foundation, either version 3 of the License, or
374 (at your option) any later version.
376 GNU Emacs is distributed in the hope that it will be useful,
377 but WITHOUT ANY WARRANTY; without even the implied warranty of
378 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
379 GNU General Public License for more details.
381 You should have received a copy of the GNU General Public License
382 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
388 paragraph-separate: "[
\f]*$"