1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2014-2015 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 file HISTORY for a list of GNU Emacs versions and release dates.
12 See files NEWS.24, NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
13 and NEWS.1-17 for changes in older Emacs versions.
15 You can narrow news to a specific version by calling `view-emacs-news'
16 with a prefix argument or by typing C-u C-h C-n.
19 +++ indicates that all necessary documentation updates are complete.
20 (This means all relevant manuals in doc/ AND lisp doc-strings.)
21 --- means no change in the manuals is needed.
22 When you add a new item, use the appropriate mark if you are sure it applies,
23 otherwise leave it unmarked.
26 * Installation Changes in Emacs 25.1
29 ** Building Emacs now requires C99 or later.
32 ** Building Emacs now requires GNU make, version 3.81 or later.
35 ** New configure option --with-cairo.
36 This builds Emacs with Cairo drawing. As a side effect, it provides
37 support for built-in printing, when Emacs was built with GTK+.
39 ** New configure option --with-modules.
40 This enables support for loading dynamic modules; see below.
43 ** By default, Emacs no longer works on IRIX. We expect that Emacs
44 users are not affected by this, as SGI stopped supporting IRIX in
45 December 2013. If you are affected, please send a bug report. You
46 should be able to work around the problem either by porting the Emacs
47 undumping code to GCC under IRIX, or by configuring --with-wide-int,
48 or by sticking with Emacs 24.4.
51 ** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
52 The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
53 since Emacs 24.4, and the other variants were undocumented and were
54 obstacles to maintenance and development. GC_MARK_STACK and its
55 related symbols have been removed from the C internals.
58 ** 'configure' now prefers gnustep-config when configuring GNUstep.
59 If gnustep-config is not available, the old heuristics are used.
62 ** 'configure' now prefers inotify to gfile for file notification,
63 unless gfile is explicitly requested via --with-file-notification='gfile'.
66 ** The configure option '--with-pkg-config-prog' has been removed.
67 Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
70 ** The configure option '--with-mmdf' has been removed.
71 It was no longer useful, as it relied on libraries that are no longer
72 supported, and its presence led to confusion during configuration.
73 This affects only the 'movemail' utility; Emacs itself can still
74 process MMDF-format files as before.
77 ** The configure option '--enable-silent-rules' is now the default,
78 and silent rules are now quieter. To get the old behavior where
79 'make' chatters a lot, configure with '--disable-silent-rules' or
80 build with 'make V=1'.
83 ** The configure option '--with-gameuser' now allows to specify a
84 group instead of a user if its argument is prefixed by ':' (a colon).
85 This will cause the game score files in ${localstatedir}/games/emacs
86 to be owned by that group, and the helper program for updating them to
87 be installed setgid. The option now defaults to the 'games' group.
90 ** The `grep-changelog' script (and its manual page) are no longer included.
91 It has no particular connection to Emacs and has not changed in years,
92 so if you want to use it, you can always take a copy from an older Emacs.
95 ** Emacs 25 comes with a new set of icons.
96 Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
97 The old Emacs logo icons are available as `emacs23.png' in the same location.
100 * Startup Changes in Emacs 25.1
103 ** When Emacs is given a file as a command line argument and
104 `initial-buffer-choice' is non-nil, display both the file and
105 `initial-buffer-choice'. When Emacs is given more than one file and
106 `initial-buffer-choice' is non-nil, show `initial-buffer-choice'
107 and *Buffer List*. This makes Emacs convenient to use from the
108 command line when `initial-buffer-choice' is non-nil.
111 ** The value of ‘initial-scratch-message’ is now treated as a doc string
112 and can contain escape sequences for command keys, quotes, and the like.
115 * Changes in Emacs 25.1
118 ** Any file of the form .dir-locals*.el is now considered a dir-local
119 file, and multiple such files can be used in the same directory. See
120 the variable `dir-locals-file' for more information.
123 ** `xref-find-definitions' and `describe-function' now display
124 information about mode local overrides (defined by cedet/mode-local.el
125 `define-overloadable-function' `define-mode-local-overrides').
128 ** New `display-buffer' action function `display-buffer-use-some-frame'.
129 This displays the buffer in an existing frame other than the current
130 frame, and allows the caller to specify a frame predicate to exclude
134 ** New documentation command `describe-symbol'.
135 Works for functions, variables, faces, etc. It is bound to `C-h o' by
139 ** New function `custom-prompt-customize-unsaved-options' checks for
140 unsaved customizations and prompts user to customize (if found). It
141 is intended for adding to 'kill-emacs-query-functions'.
144 ** Network security (TLS/SSL certificate validity and the like) is
145 added via the new Network Security Manager (NSM) and controlled via
146 the `network-security-level' variable.
149 ** C-h l now also lists the commands that were run.
152 ** x-select-enable-clipboard is renamed select-enable-clipboard
153 and x-select-enable-primary is renamed select-enable-primary.
154 Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
155 name it), with the proviso that on some systems (e.g. Windows)
156 select-enable-primary is ineffective since the system doesn't
157 have the equivalent of a primary selection.
160 ** terpri gets an optional arg ENSURE to conditionally output a newline.
163 ** New macro `define-advice'.
166 ** `insert-register' now leaves point after the inserted text
167 when called interactively. A prefix argument toggles this behavior.
170 ** The new variable `term-file-aliases' replaces some files from lisp/term.
171 The function `tty-run-terminal-initialization' consults this variable
172 when deciding what terminal-specific initialization code to run.
175 ** New variable `system-configuration-features', listing some of the
176 main features that Emacs was compiled with. This is mainly intended
177 for use in Emacs bug reports.
180 ** A password is now hidden also when typed in batch mode. Another
181 hiding character but the default `.' can be used by let-binding the
182 variable `read-hide-char'.
184 ** A new text property `inhibit-read-only' can be used in read-only
185 buffers to allow certain parts of the text to be writable.
187 ** A new function `directory-files-recursively' returns all matching
188 files (recursively) under a directory.
190 ** The new function `directory-name-p' can be used to check whether a file
191 name (as returned from, for instance, `file-name-all-completions' is
192 a directory file name. It returns non-nil if the last character in
193 the name is a forward slash.
195 ** The function `font-info' now returns more details about a font.
196 In particular, it now returns the average width of the font's
197 characters, which can be used for geometry-related calculations.
199 ** A new function `default-font-width' returns the average width of a
200 character in the current buffer's default font. If the default face
201 is remapped (see `face-remapping-alist'), the value for the remapped
202 face is returned. This function complements the existing function
203 `default-font-height'.
205 ** New functions `window-font-height' and `window-font-width' return
206 the height and average width of characters in a specified face and
207 window. If FACE is remapped (see `face-remapping-alist'), the
208 function returns the information for the remapped face.
210 ** A new function `window-max-chars-per-line' returns the maximal
211 number of characters that can be displayed on one line. If a face
212 and/or window are provided, these values are used for the
213 calculation. This function is different from `window-body-width' in
214 that it accounts for (i) continuation glyphs, (ii) the size of the
215 font, and (iii) the specified window.
217 ** New possible value for `system-type': nacl.
219 ** Emacs can now load shared/dynamic libraries (modules).
220 A dynamic Emacs module is a shared library that provides additional
221 functionality for use in Emacs Lisp programs, just like a package
222 written in Emacs Lisp would. The functions `load', `require',
223 `load-file', etc. were extended to load such modules, as they do with
224 Emacs Lisp packages. The new variable `module-file-suffix' holds the
225 system-dependent value of the file-name extension (`.so' on Posix
226 hosts) of the module files.
228 A module should export a C-callable function named
229 `emacs_module_init', which Emacs will call as part of the call to
230 `load' or `require' which loads the module. It should also export a
231 symbol named `plugin_is_GPL_compatible' to indicate that its code is
232 released under the GPL or compatible license; Emacs will refuse to
233 load modules that don't export such a symbol.
235 If a module needs to call Emacs functions, it should do so through the
236 API defined and documented in the header file `emacs-module.h'. Note
237 that any module that provides Lisp-callable functions will have to use
238 Emacs functions such as `fset' and `funcall', in order to register its
239 functions with the Emacs Lisp interpreter.
241 Modules can create `user-ptr' Lisp objects that embed pointers to C
242 struct's defined by the module. This is useful for keeping around
243 complex data structures created by a module, to be passed back to the
244 module's functions. User-ptr objects can also have associated
245 "finalizers" -- functions to be run when the object is GC'ed; this is
246 useful for freeing any resources allocated for the underlying data
247 structure, such as memory, open file descriptors, etc. A new
248 predicate `user-ptr-p' returns non-nil if its argument is a `usr-ptr'
251 Loadable modules in Emacs are an experimental feature, and subject to
252 change in future releases. For that reason, their support is disabled
253 by default, and must be enabled by using the `--with-modules' option
256 ** New input method: `tamil-dvorak'.
259 * Editing Changes in Emacs 25.1
262 ** M-x suggests shorthands and ignores obsolete commands for completion.
264 ** Successive single-char deletions are collapsed in the undo-log just like
265 successive char insertions. This behaviour can be extended to other
266 commands, using the `undo-auto--amalgamate' function.
268 ** The heuristic used to insert `undo-boundary' after each command has changed,
269 so that it supports commands which potentially affect multiple buffers.
272 ** New command `comment-line' bound to `C-x C-;'.
274 ** Unicode names entered via C-x 8 RET now use substring completion by default.
276 ** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
277 € № ← → ↔ − ≈ ≠ ≤ ≥. As before, you can type C-x 8 C-h to list shorthands.
279 ** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”
280 as you type. See also the new variable ‘text-quoting-style’.
282 ** New minor mode global-eldoc-mode is enabled by default.
284 ** Emacs now supports "bracketed paste mode" when running on a terminal
285 that supports it. This facility allows Emacs to understand pasted
286 chunks of text as strings to be inserted, instead of interpreting each
287 character in the pasted text as actual user input. This results in a
288 paste experience similar to that under a window system, and significant
289 performance improvements when pasting large amounts of text.
291 ** Emacs now supports the latest version of the UBA.
292 The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
293 was updated to support all the latest additions and changes introduced
294 in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
295 This includes full support for directional isolates and the
296 Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
299 ** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.
302 ** New buffer-local `electric-pair-local-mode'.
305 ** New variable `fast-but-imprecise-scrolling' inhibits
306 fontification during full screen scrolling operations, giving less
307 hesitant operation during auto-repeat of C-v, M-v at the cost of
308 possible inaccuracies in the end position.
311 * Changes in Specialized Modes and Packages in Emacs 25.1
316 *** New command `checkdoc-package-keywords' checks if the
317 current package keywords are recognized. Set the new option
318 `checkdoc-package-keywords-flag' to non-nil to make
319 `checkdoc-current-buffer' call this function automatically.
322 *** New function `checkdoc-file' checks for style errors.
323 It's meant for use together with `compile':
324 emacs -batch --eval "(checkdoc-file \"subr.el\")"
326 ** New function `bookmark-set-no-overwrite' bound to C-x r M.
327 It raises an error if a bookmark of that name already exists,
328 unlike `bookmark-set' which silently updates an existing bookmark.
332 *** `json-pretty-print' and `json-pretty-print-buffer' now maintain
333 the ordering of object keys by default.
335 *** New commands `json-pretty-print-ordered' and
336 `json-pretty-print-buffer-ordered' pretty prints JSON objects with
337 object keys sorted alphabetically.
339 ** You can recompute the VC state of a file buffer with `M-x vc-refresh-state'
340 ** Prog mode has some support for multi-mode indentation.
341 See `prog-indentation-context' and `prog-widen'.
343 ** Prettify Symbols mode
344 *** Prettify Symbols mode supports custom composition predicates. By
345 overriding the default `prettify-symbols-compose-predicate', modes can
346 specify in which contexts a symbol map be composed to some unicode
347 character. `prettify-symbols-default-compose-p' is the default which
348 is suitable for most programming languages such as C or Lisp (but not
351 *** Symbols can be unprettified while point is inside them.
352 New variable `prettify-symbols-unprettify-at-point' configures this.
354 ** New `xterm-screen-extra-capabilities' config.
356 ** The `save-place' variable is replaced by a `save-place-mode'.
360 *** Hide message types by network or channel. `erc-hide-list' will
361 hide all messages of the specified type, where `erc-network-hide-list'
362 and `erc-channel-hide-list' will only hide the specified message types
363 for the respective specified targets.
366 *** `midnight-mode' is a proper minor mode.
367 *** clean-buffer-*-regexps can now specify buffers via predicate functions.
369 ** In xterms, killing text now also sets the CLIPBOARD/PRIMARY selection
370 in the surrounding GUI (using the OSC-52 escape sequence). This only works
371 if your xterm supports it and enables the `allowWindowOps' options (disabled
372 by default at least in Debian, for security reasons).
374 Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
375 escape sequence) if your xterm has the feature enabled but for that you
376 additionally need to add `getSelection' to `xterm-extra-capabilities'.
378 ** xterm-mouse-mode now supports mouse-tracking (if your xterm supports it).
382 *** New "external" package status.
383 An external package is any installed package that's not built-in and
384 not from `package-user-dir', which usually means it's from an entry in
385 `package-directory-list'. They are treated much like built-in
386 packages, in that they cannot be deleted through the package menu and
387 are not considered for upgrades.
389 The effect, is that a user can manually place a specific version of a
390 package inside `package-directory-list' and the package menu will
393 *** If a package is available on multiple archives and one has higher
394 priority (as per `package-archive-priorities') only that one is
395 listed. This can be configured with `package-menu-hide-low-priority'.
397 *** `package-menu-toggle-hiding' now toggles the hiding of packages.
398 This includes the above-mentioned low-priority packages, as well as
399 available packages whose version is lower than the currently installed
400 version (which were previously impossible to display).
401 This allows users to downgrade a package if a lower version is
404 *** When filtering the package menu, keywords starting with "arc:" or
405 "status:" represent package archive or status, respectively, instead
408 *** Most functions which involve downloading information now take an
409 ASYNC argument. If it is non-nil, package.el performs the download(s)
412 *** New variable `package-menu-async' controls whether the
413 package-menu uses asynchronous downloads.
415 *** `package-install-from-buffer' and `package-install-file' work on directories.
416 This follows the same rules as installing from a .tar file, except the
417 -pkg file is optional.
419 *** Packages which are dependencies of other packages cannot be deleted.
420 The FORCE argument to `package-delete' overrides this.
422 *** New custom variable `package-selected-packages' tracks packages
423 which were installed by the user (as opposed to installed as
424 dependencies). This variable can also be manually customized.
426 *** New command `package-install-user-selected-packages' installs all
427 packages from `package-selected-packages' which are currently missing.
429 *** New command `package-autoremove' removes all packages which were
430 installed strictly as dependencies but are no longer needed.
434 When you invoke `shell' interactively, the *shell* buffer will now
435 display in a new window. However, you can customize this behavior via
436 the `display-buffer-alist' variable. For example, to get
437 the old behavior -- *shell* buffer displays in current window -- use
438 (add-to-list 'display-buffer-alist
439 '("^\\*shell\\*$" . (display-buffer-same-window))).
443 *** The `:protection' slot option is not obeyed any more.
445 *** The `newname' argument to constructors is optional&deprecated.
446 If you need your objects to be named, do it by inheriting from `eieio-named'.
448 *** The <class>-list-p and <class>-child-p functions are declared obsolete.
450 *** The <class> variables are declared obsolete.
452 *** The <initarg> variables are declared obsolete.
453 *** defgeneric and defmethod are declared obsolete.
455 *** `constructor' is now an obsolete alias for `make-instance'.
458 *** New command `ido-bury-buffer-at-head' bound to C-S-b
459 Bury the buffer at the head of `ido-matches', analogous to how C-k
460 kills the buffer at head.
461 *** A prefix argument to `ido-restrict-to-matches' will reverse its
462 meaning, and the list is restricted to those elements that do not
463 match the current input.
467 *** You can use <up> and <down> keys to move point in the multi-line
468 minibuffer just as in an ordinary buffer. Only when point moves over
469 the bottom/top of the minibuffer it goes to the next/previous history
470 element. The new commands bound to <up> and <down> in the minibuffer:
471 `next-line-or-history-element' and `previous-line-or-history-element'.
473 ** Search and Replace
476 *** New user option `search-default-regexp-mode'
477 specifies the default mode for I-search.
480 *** `isearch' and `query-replace' can now perform character folding in matches.
481 Isearch does that by default, while `query-replace' will do that if
482 the new variable `replace-character-fold' is customized to a non-nil
483 value. This is analogous to case folding, but instead of disregarding
484 case variants, it disregards wider classes of distinctions between
485 similar characters. (Case folding is a special case of character
486 folding.) This means many characters in the search string will match
487 entire groups of characters instead of just themselves.
489 For instance, the " will match all variants of double quotes (like “
490 and ”), and the letter a will match all of its accented cousins, even
491 those composed of multiple characters, as well as many other symbols
495 *** New function `character-fold-to-regexp' can be used
496 by searching commands to produce a regexp matching anything that
497 character-folds into STRING.
500 *** The new M-s M-w key binding uses eww to search the web for the
501 text in the region. The search engine to use for this is specified by
502 the customizable variable `eww-search-prefix'.
505 *** Query-replace history is enhanced.
506 When query-replace reads the FROM string from the minibuffer, typing
507 `M-p' will now show previous replacements as "FROM SEP TO", where FROM
508 and TO are the original text and its replacement, and SEP is an arrow
509 string defined by the new variable `query-replace-from-to-separator'.
510 To select a prior replacement, type `M-p' until the desired
511 replacement appears in the minibuffer, and then exit the minibuffer by
516 *** If `quick-calc' is called with a prefix argument, insert the
517 result of the calculation into the current buffer.
520 ** In Edebug, you can now set the initial mode with C-x C-a C-m. With
521 this you can tell Edebug not to stop at the start of the first
522 instrumented function.
525 *** New minor mode `global-eldoc-mode'
526 *** `eldoc-documentation-function' now defaults to `ignore'
527 *** `describe-char-eldoc' displays information about character at point,
528 and can be used as a default value of `eldoc-documentation-function'. It is
529 useful when, for example, one needs to distinguish various spaces (e.g. ] [,
530 ] [, ] [, etc.) while using mono-spaced font.
535 *** HTML can now be rendered using variable-width fonts.
538 *** A new command `F' (`eww-toggle-fonts') can be used to toggle
539 whether to use variable-pitch fonts or not. The user can also
540 customize the `shr-use-fonts' variable.
543 *** A new command `R' (`eww-readable') will try do identify the main
544 textual parts of a web page and display only that, leaving menus and
545 the like off the page.
548 *** You can now use several eww buffers in parallel by renaming eww
549 buffers you want to keep separate.
552 *** Partial state of the eww buffers (the URIs and the titles of the
553 pages visited) is now preserved in the desktop file.
556 *** `eww-after-render-hook' is now called after eww has rendered
557 the data in the buffer.
560 *** The `eww-reload' command now takes a prefix to not reload via
561 the net, but just use the local copy of the HTML.
564 *** The DOM shr and eww uses has been changed to the general Emacs
565 xml.el/libxml2 DOM, and a new package dom.el has been added to
566 interact with this DOM. See the Emacs Lisp manual for interface
570 *** `mailcap-mime-data' is now consulted when displaying PDF files.
573 *** The new `S' command will list all eww buffers, and allow managing
577 *** https pages with valid certificates have headers marked in green, while
578 invalid certificates are marked in red.
582 *** text/html messages that contain inline image parts will be
583 transformed into multipart/related messages before sending.
586 *** New UPatterns `quote', `app', `cl-struct', and `eieio'.
587 *** New UPatterns can be defined with `pcase-defmacro'.
589 *** New vector QPattern.
592 *** Strings after `:documentation' are highlighted as docstrings.
595 *** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
596 *** C-x C-x in rectangle-mark-mode now cycles through the four corners.
597 *** `string-rectangle' provides on-the-fly preview of the result.
599 ** New font-lock functions font-lock-ensure and font-lock-flush, which
600 should be used instead of font-lock-fontify-buffer when called from Elisp.
602 ** Macro `minibuffer-with-setup-hook' takes (:append FUN) to mean
603 appending FUN to `minibuffer-setup-hook'.
606 *** New functions cl-fresh-line, cl-digit-char-p and cl-parse-integer.
608 ** Calendar and diary
611 *** The default `diary-file' is now located in .emacs.d.
614 *** New commands to insert diary entries with Chinese dates:
615 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
616 `diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
619 *** The calendar can now list and mark diary entries with Chinese dates.
620 See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
623 *** The option `calendar-mode-line-format' can now be nil,
624 which means to do nothing special with the mode line in calendars.
627 *** New option `calendar-weekend-days'.
628 The option customizes which day headers receive the
629 `calendar-weekend-header' face.
632 *** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.
635 *** Many items obsolete since at least version 23.1 have been removed.
636 The majority were function/variable/face aliases, too numerous to list here.
639 **** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
640 `calendar-two-frame-setup', `european-calendar', `american-calendar'.
642 **** Hooks `cal-menu-load-hook', `cal-x-load-hook'.
644 **** Macro `calendar-for-loop'.
646 **** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
648 **** The nil and list forms of `diary-display-function'.
650 ** New ERT function `ert-summarize-tests-batch-and-exit'.
652 ** New js.el option `js-indent-first-init'.
655 ** `Info-fontify-maximum-menu-size' can be t for no limit.
658 ** `info-display-manual' can now be given a prefix argument which (any
659 non-nil value) directs the command to limit the completion
660 alternatives to currently visited manuals.
663 ** ntlm.el has support for NTLM2.
667 *** The Rmail commands d, C-d and u take optional repeat counts to delete or
668 undelete multiple messages.
670 *** Rmail can now render HTML mail messages if your Emacs was built with
671 libxml2 or if you have the Lynx browser installed. By default, Rmail
672 will display the HTML version of a mail message that has both HTML and
673 plain text parts, if display of HTML email is possible; customize the
674 `rmail-mime-prefer-html' option to `nil' if you don't want that.
677 *** In the commands that make summaries by subject, recipients, or senders,
678 you can no longer use commas to separate regular expressions.
680 ** SES now supports local printer functions; see `ses-define-local-printer'.
683 *** In sh-mode you can now use `sh-shell' as a file-local variable to
684 specify the type of shell in use (bash, csh, etc).
686 *** New value `always' for sh-indent-after-continuation.
687 This provides old-style ("dumb") indentation of continued lines.
691 *** Fatal TLS errors are now silent by default.
695 *** The URL package accepts now the protocols "ssh", "scp" and "rsync".
696 When `url-handler-mode' is enabled, file operations for these
697 protocols as well as for "telnet" and "ftp" are passed to Tramp.
699 *** The URL package allows customizing the `url-user-agent' string.
700 The new `url-user-agent' variable can be customized to be a string or
703 *** The new interface variable `url-request-noninteractive' can be used
704 to specify that we're running in a noninteractive context, and that
705 we should not be queried about things like TLS certificate validity.
707 *** If URL is used with a https connection, the first callback argument
708 plist will contain a :peer element that has the output of
709 `gnutls-peer-status' (if Emacs is built with GnuTLS support).
714 *** New connection method "afp", which allows to access Mac OS X
715 volumes via the Apple Filing Protocol.
718 *** New connection method "nc", which allows to access dumb busyboxes.
721 *** Method-specific parameters can be overwritten now with variable
722 `tramp-connection-properties'.
725 *** Handler for `file-notify-valid-p' for remote machines that support
726 filesystem notifications.
730 *** New user variable `sql-default-directory' enables remote
731 connections using Tramp.
733 *** New command `sql-send-line-and-next' sends the current line to the
734 interactive buffer and advances to the next line, skipping whitespace
737 *** Add support for Vertica SQL.
739 ** VC and related modes
741 *** Basic push support, via `vc-push', bound to `C-x v P'.
742 Implemented for Bzr, Git, Hg. As part of this change, the pre-existing
743 (undocumented) command vc-hg-push now behaves slightly differently.
745 *** The new command vc-region-history shows the log+diff of the active region.
747 *** New option `vc-annotate-background-mode' controls whether
748 the color range from `vc-annotate-color-map' is applied to the
749 background or to the foreground.
751 *** `compare-windows' now compares text with the most recently used window
752 instead of the next window. The new option `compare-windows-get-window-function'
753 allows to customize this.
755 *** Two new faces `compare-windows-removed' and `compare-windows-added'
756 replace the obsolete face `compare-windows'.
759 *** `log-edit-insert-changelog' converts "(tiny change)" to
760 "Copyright-paperwork-exempt: yes". Set `log-edit-rewrite-tiny-change'
763 ** VHDL mode supports VHDL'08.
765 ** Calculator: decimal display mode uses "," groups, so it's more
766 fitting for use in money calculations; factorial works with
769 ** HideIfDef mode now support full C/C++ expressions, argumented macro expansions,
770 interactive macro evaluation and automatic scanning of #defined symbols.
772 *** New custom variable `hide-ifdef-header-regexp' to define C/C++ header file
773 name patterns. Default case-insensitive .h, .hh, .hpp, .hxx, and .h++.
774 *** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
775 reinclusion protected header files from being fully hidden.
776 *** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
777 name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be excluded.
781 *** New custom variable `tex-print-file-extension' to help users who
782 use PDF instead of DVI.
784 *** TeX mode now supports Prettify Symbols mode. When enabling
785 `prettify-symbols-mode' in a tex-mode buffer, \alpha ... \omega, and
786 many other math macros are displayed using unicode characters.
788 ** whitespace-mode: new 'big-indent style highlighting too much indentation.
789 By default, 32 spaces and four TABs are considered to be too much but
790 `whitespace-big-indent-regexp' can be configured to change that.
792 ** tildify: `tildify-space-string', `tildify-pattern', and
793 `tildify-foreach-region-function' variables added making
794 `tildify-string-alist', `tildify-pattern-alist', and
795 `tildify-ignored-environments-alist' variables (as well as a few
796 helper functions) obsolete.
799 The new package provides generic framework and new commands to find
800 and move to definitions, as well as pop back to the original location.
803 `xref-find-definitions' replaces `find-tag' and provides an interface
804 to pick one destination among several. Hence, `tags-loop-continue' is
805 unbound. `xref-pop-marker-stack' replaces `pop-tag-mark', but uses an
806 easier binding, which is now unoccupied (`M-,').
807 `xref-find-definitions-other-window' replaces `find-tag-other-window'.
808 `xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
809 `xref-find-apropos' replaces `find-tag-regexp'.
812 `find-tag-marker-ring-length' is now an obsolete alias for
813 `xref-marker-ring-length'. `find-tag-marker-ring' is now an obsolete
814 alias for a private variable. `xref-push-marker-stack' and
815 `xref-pop-marker-stack' should be used to mutate it instead.
818 As a result of the above, these commands are now obsolete:
819 `find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
820 `tags-apropos' and `tags-loop-continue'.
823 EUDC's LDAP backend has been improved.
825 *** EUDC supports LDAP-over-SSL URLs (ldaps://).
827 *** EUDC passes LDAP passwords through a pipe to the ldapsearch
828 subprocess instead of on the command line.
830 *** EUDC handles LDAP wildcards automatically so the user shouldn't
831 need to configure this manually anymore.
833 *** The LDAP configuration section of EUDC's manual has been
836 There have also been customization changes.
838 *** New custom variable `eudc-server-hotlist' to allow specifying
839 multiple EUDC servers in init file.
841 *** Custom variable `eudc-inline-query-format' defaults to completing
842 on email and firstname instead of surname.
844 *** Custom variable `eudc-expansion-overwrites-query' defaults to nil
845 to avoid interfering with the kill ring.
847 *** Custom variable `eudc-inline-expansion-format' defaults to
848 "Firstname Surname <mail-address>".
850 *** Custom variable `eudc-options-file' defaults to
851 "~/.emacs.d/eudc-options".
853 *** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
854 allow overriding the regular expression that recognizes the ldapsearch
855 command line's password prompt.
857 EUDC's BBDB backend now supports BBDB 3.
862 *** The new built-in command `clear' can scroll window contents out of sight.
863 If provided with an optional non-nil argument, the scrollback contents will be cleared.
865 *** New buffer syntax '#<buffer-name>', which is equivalent to
866 '#<buffer buffer-name>'. This shorthand makes interacting with
867 buffers from eshell more convenient. Custom variable
868 `eshell-buffer-shorthand', which has been broken for a while, has been
871 *** By default, eshell "visual" program buffers (created by
872 `eshell-visual-commands' and similar custom vars) are no longer killed
873 when their processes die. This fixes issues with short-lived commands
874 and makes visual programs more useful in general. For example, if
875 "git log" is a visual command, it will always show the visual command
876 buffer, even if the "git log" process dies. For the old behavior,
877 make the new option `eshell-destroy-buffer-when-process-dies' non-nil.
881 *** Support for the Conkeror web browser.
884 *** Support for several ancient browsers is now officially obsolete.
887 ** tar-mode: new `tar-new-entry' command, allowing for new members to
888 be added to the archive.
891 ** Autorevert: dired buffers are also auto-reverted via file
892 notifications, if Emacs is compiled with file notification support.
894 ** File Notifications
897 *** The new event `stopped' signals, that a file notification watch is
898 not active any longer.
901 *** The new function `file-notify-valid-p' checks, whether a file
902 notification descriptor still corresponds to an activate watch.
907 *** The command `dired-do-compress' bound to `Z' now can compress
908 directories and decompress zip files.
911 *** New command `dired-do-compress-to' bound to `c' can be used to
912 compress many marked files into a single named archive. The
913 compression command is determined from the new
914 `dired-compress-files-alist' variable.
916 ** Tabulated List Mode
919 *** It is now safe for a mode that derives `tabulated-list-mode' to not
920 call `tabulated-list-init-header', in which case it will have no
924 *** `tabulated-list-print' takes a second optional argument, update,
925 which specifies an alternative printing method which is faster when
926 few or no entries have changed.
933 *** landmark.el (moved to elpa.gnu.org)
936 * New Modes and Packages in Emacs 25.1
938 ** pinentry.el allows GnuPG passphrase to be prompted through the
939 minibuffer instead of a graphical dialog, depending on whether the gpg
940 command is called from Emacs (i.e., INSIDE_EMACS environment variable
941 is set). This feature requires newer versions of GnuPG (2.1.5 or
942 later) and Pinentry (0.9.5 or later).
944 ** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
946 ** scss-mode (a minor variant of css-mode)
948 ** let-alist is a new macro (and a package) that allows one to easily
949 let-bind the values stored in an alist.
951 ** `tildify-mode' allows to automatically insert hard spaces as one
952 types the text. Breaking line after a single-character words is
953 forbidden by Czech and Polish typography (and may be discouraged in
954 other languages), so `auto-tildify-mode' makes it easier to create
955 a typographically-correct documents.
957 ** The `seq' library adds sequence manipulation functions and macros
958 that complement basic functions provided by subr.el. All functions
959 are prefixed with `seq-' and work on lists, strings and vectors.
961 ** The `map' library provides map-manipulation functions that work on
962 alists, hash-table and arrays. All functions are prefixed with
965 ** The `thunk' library provides functions and macros to control the
968 ** js-jsx-mode (a minor variant of js-mode) provides indentation
969 support for JSX, an XML-like syntax extension to ECMAScript.
972 * Incompatible Lisp Changes in Emacs 25.1
975 ** `setq' and `setf' must now be called with an even number of
976 arguments. The earlier behavior of silently supplying a nil to the
977 last variable when there was an odd number of arguments has been
980 ** `syntax-begin-function' is declared obsolete.
981 Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
982 slot in font-lock-defaults.
985 ** `package-initialize' now sets `package-enable-at-startup' to nil if
986 called during startup. Users who call this function in their init
987 file and still expect it to be run after startup should set
988 `package-enable-at-startup' to t after the call to
989 `package-initialize'.
991 ** `:global' minor mode use `setq-default' rather than `setq'.
992 This means that you can't use `make-local-variable' and expect them to
993 "magically" become buffer-local.
995 ** `inhibit-point-motion-hooks' now defaults to t and is obsolete.
998 ** `track-mouse' no longer freezes the shape of the mouse pointer.
999 The `track-mouse' form no longer refrains from changing the shape of
1000 the mouse pointer for the entire time the body of that form is
1001 executed. Lisp programs that use `track-mouse' for dragging across
1002 large portions of the Emacs display, and want to avoid changes in the
1003 pointer shape during dragging, should bind the variable `track-mouse'
1004 to the special value `dragging' in the body of the form.
1007 ** The optional `predicate' argument of `lisp-complete-symbol' no longer
1008 has any effect. (This change was made in Emacs 24.4 but was not
1009 advertised at the time.)
1011 ** `indirect-function' does not signal `void-function' any more.
1012 This is mostly a bug-fix, since this change was missed back in 24.4 when
1013 symbol-function was changed not to signal `void-function' any more.
1015 *** As a consequence, the second arg of `indirect-function' is now obsolete.
1017 ** Comint, term, and compile do not set the EMACS env var any more.
1018 Use the INSIDE_EMACS environment variable instead.
1020 ** `save-excursion' does not save&restore the mark any more.
1022 ** read-buffer-function can now be called with a 4th argument (`predicate').
1024 ** completion-table-dynamic stays in the minibuffer.
1025 If you want the old behavior of calling the function in the buffer
1026 from which the minibuffer was entered, call it with the new argument
1029 ** window-configurations no longer record the buffers' marks.
1031 ** inhibit-modification-hooks now also inhibits lock-file checks, as well as
1032 active region handling.
1034 ** deactivate-mark is now buffer-local.
1036 ** `cl-the' now asserts that its argument is of the given type.
1038 ** `process-running-child-p` may now return a numeric process
1039 group ID instead of `t'.
1042 ** Mouse click events on mode line or header line no longer include
1043 any reference to a buffer position. The 6th member of the mouse
1044 position list returned for such events is now nil.
1046 ** Menu items in keymaps do not support the "key shortcut cache" any more.
1047 These slots used to hold key-shortcut data, but have been obsolete since
1050 ** Emacs no longer downcases the first letter of a system diagnostic
1051 when signaling a file error. For example, it now reports "Permission
1052 denied" instead of "permission denied". The old behavior was problematic
1053 in languages like German where downcasing rules depend on grammar.
1056 ** New variable ‘text-quoting-style’ to control how Emacs translates quotes.
1057 Set it to ‘curve’ for curved single quotes ‘like this’, to ‘straight’
1058 for straight apostrophes 'like this', and to ‘grave’ for grave accent
1059 and apostrophe `like this'. The default value nil acts like ‘curve’
1060 if curved single quotes are displayable, and like ‘grave’ otherwise.
1061 The new variable affects display of diagnostics and help, but not of info.
1064 ** substitute-command-keys now replaces quotes.
1065 That is, it converts documentation strings’ quoting style as per the
1066 value of ‘text-quoting-style’. Doc strings in source code can use
1067 either curved single quotes or grave accents and apostrophes. As
1068 before, characters preceded by \= are output as-is.
1071 ** Message-issuing functions ‘error’, ‘message’, etc. now convert quotes.
1072 They use the new ‘format-message’ function instead of plain ‘format’,
1073 so that they now follow user preference as per ‘text-quoting-style’
1074 when processing curved single quotes, grave accents, and apostrophes
1075 in their format argument.
1078 ** The character classes [:alpha:] and [:alnum:] in regular expressions
1079 now match multibyte characters using Unicode character properties.
1080 If you want the old behavior where they matched any character with
1081 word syntax, use `\sw' instead.
1084 ** The character classes [:graph:] and [:print:] in regular expressions
1085 no longer match every multibyte character. Instead, Emacs now
1086 consults the Unicode character properties to determine which
1087 characters are graphic or printable. In particular, surrogates and
1088 unassigned codepoints are now rejected. If you want the old behavior,
1089 use [:multibyte:] instead.
1092 ** The `diff' command uses the unified format now. To restore the old
1093 behavior, set `diff-switches' to `-c'.
1095 ** `grep-template' and `grep-find-template' values don't include the
1096 --color argument anymore. It's added at the <C> place holder position
1097 dynamically. Any third-party code that changes these templates should
1098 be updated accordingly.
1101 ** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
1102 The new behavior is compatible with Common Lisp and with XEmacs.
1103 This change does not affect Lisp code intended to be portable to
1104 Emacs 24.2 and earlier, which did not support unary ‘/’.
1107 ** The `default-directory' value doesn't have to end slash. To make
1108 that happen, `unhandled-file-name-directory' now defaults to calling
1109 `file-name-as-directory'.
1112 * Lisp Changes in Emacs 25.1
1114 ** syntax-propertize is now automatically called on-demand during forward
1115 parsing functions like `forward-sexp'.
1117 ** New hooks prefix-command-echo-keystrokes-functions and
1118 prefix-command-preserve-state-hook, to allow the definition of prefix
1119 commands other than the predefined C-u.
1121 ** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
1123 ** The default value of `load-read-function' is now `read'.
1125 ** New hook `pre-redisplay-functions', a bit easier to use than pre-redisplay-function.
1127 ** The second arg of `looking-back' should always be provided explicitly.
1129 ** Obsolete text properties `intangible', `point-entered', and `point-left'.
1130 Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
1131 implemented by the new `cursor-intangible-mode' and
1132 `cursor-sensor-mode' minor modes.
1134 ** New process type `pipe', which can be used in combination with the
1135 `:stderr' keyword of make-process to handle standard error output
1138 ** New function `make-process' provides an alternative interface to
1139 `start-process'. It allows programs to set process parameters such as
1140 process filter, sentinel, etc., through keyword arguments (similar to
1141 `make-network-process').
1144 ** New variable `inhibit-message', when bound to non-nil, inhibits
1145 `message' and related functions from displaying messages the Echo
1146 Area. The output is still logged to the *Messages* buffer.
1148 ** `read-buffer' takes a new `predicate' argument.
1150 ** Emacs Lisp now supports generators.
1152 ** New finalizer facility for running code when objects
1155 ** lexical closures can use (:documentation <form>) to build their docstring.
1156 It should be placed right where the docstring would be, and <form> is then
1157 evaluated (and should return a string) when the closure is built.
1159 ** define-inline provides a new way to define inlinable functions.
1161 ** New function `macroexpand-1' to perform a single step of macroexpansion.
1163 ** Some "x-*" were obsoleted:
1164 *** x-select-text is renamed gui-select-text.
1165 *** x-selection-value is renamed gui-selection-value.
1166 *** x-get-selection is renamed gui-get-selection.
1167 *** x-get-clipboard and x-clipboard-yank are marked obsolete.
1168 *** x-get-selection-value is renamed to gui-get-primary-selection.
1169 *** x-set-selection is renamed to gui-set-selection
1171 ** New function `string-greaterp', which return the opposite result of
1175 ** The new functions `string-collate-lessp' and `string-collate-equalp'
1176 preserve the collation order as defined by the system's locale(1)
1177 environment. For the time being this is implemented for modern POSIX
1178 systems and for MS-Windows, for other systems they fall back to their
1179 counterparts `string-lessp' and `string-equal'.
1182 *** The ls-lisp package uses `string-collate-lessp' to sort file names.
1183 If you want the old, locale-independent sorting, customize the new
1184 option `ls-lisp-use-string-collate' to a nil value.
1187 *** The MS-Windows specific variable `w32-collate-ignore-punctuation',
1188 if set to a non-nil value, causes the above 2 functions to ignore
1189 symbol and punctuation characters when collating strings. This
1190 emulates the behavior of modern Posix platforms when the locale's
1191 codeset is "UTF-8" (as in "en_US.UTF-8"). This is needed because
1192 MS-Windows doesn't support UTF-8 as codeset in its locales.
1194 ** New function `alist-get', which is also a valid place (aka lvalue).
1196 ** New function `funcall-interactively', which works like `funcall'
1197 but makes `called-interactively-p' treat the function as (you guessed it)
1198 called interactively.
1200 ** New function `function-put' to use instead of `put' for function properties.
1203 ** The new function `bidi-find-overridden-directionality' allows to
1204 find characters whose directionality was, perhaps maliciously,
1205 overridden by directional override control characters. Lisp programs
1206 can use this to detect potential phishing of URLs and other links that
1207 exploits bidirectional display reordering.
1210 ** The new function `buffer-substring-with-bidi-context' allows to
1211 copy a portion of a buffer into a different location while preserving
1212 the visual appearance both of the copied text and the text at
1213 destination, even when the copied text includes mixed bidirectional
1214 text and directional control characters.
1217 ** New properties that can be specified with `declare':
1218 *** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
1219 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
1220 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
1224 ** New macro `with-file-modes', for evaluating expressions with default file
1225 permissions set to temporary values (e.g., for creating private files).
1227 ** You can access the slots of structures using `cl-struct-slot-value'.
1229 ** Function `sort' can deal with vectors.
1231 ** Function `system-name' now returns an updated value if the current
1232 system's name has changed or if the Emacs process has changed systems,
1233 and to avoid long waits it no longer consults DNS to canonicalize the
1234 name. The variable `system-name' is now obsolete.
1237 ** Function `write-region' no longer outputs "Wrote FILE" in batch mode.
1239 ** If `pwd' is called with a prefix argument, insert the current default
1243 ** New utilities in subr-x.el:
1244 *** New macros `if-let' and `when-let' allow defining bindings and to
1245 execute code depending whether all values are true.
1246 *** New macros `thread-first' and `thread-last' allow threading a form
1247 as the first or last argument of subsequent forms.
1250 ** Documentation strings now support quoting with curved single quotes
1251 ‘like-this’ in addition to the old style with grave accent and
1252 apostrophe `like-this'. The new style looks better on today's displays.
1253 In the new Electric Quote mode, you can enter curved single quotes
1254 into documentation by typing ` and '. Outside Electric Quote mode,
1255 you can enter them by typing ‘C-x 8 [’ and ‘C-x 8 ]’, or (if your Alt
1256 key works) by typing ‘A-[’ and ‘A-]’. As described above under
1257 ‘text-quoting-style’, the user can specify how to display doc string
1261 ** New function ‘format-message’ is like ‘format’ and also converts
1262 curved single quotes, grave accents and apostrophes as per
1263 ‘text-quoting-style’.
1266 ** show-help-function's arg is converted via substitute-command-keys
1267 before being passed to the function. Help strings, help-echo
1268 properties, etc. can therefore contain command key escapes and
1272 ** Time-related changes:
1274 *** Time conversion functions now accept an optional ZONE argument
1275 that specifies the time zone rules for conversion. ZONE is omitted or
1276 nil for Emacs local time, t for Universal Time, ‘wall’ for system wall
1277 clock time, or a string as in ‘set-time-zone-rule’ for a time zone
1278 rule. The affected functions are ‘current-time-string’,
1279 ‘current-time-zone’, ‘decode-time’, and ‘format-time-string’. The
1280 function ‘encode-time’, which already accepted a simple time zone rule
1281 argument, has been extended to accept all the new forms.
1283 *** Time-related functions now consistently accept numbers
1284 (representing seconds since the epoch) and nil (representing the
1285 current time) as well as the usual list-of-integer representation.
1286 Affected functions include `current-time-string', `current-time-zone',
1287 `decode-time', `float-time', `format-time-string', `seconds-to-time',
1288 `time-add', `time-less-p', `time-subtract', `time-to-day-in-year',
1289 `time-to-days', and `time-to-seconds'.
1291 *** The `encode-time-value' and `with-decoded-time-value' macros have
1294 *** `calendar-next-time-zone-transition', `time-add', and
1295 `time-subtract' no longer return time values in the obsolete and
1296 undocumented integer-pair format. Instead, they return a list of two
1300 ** New function `set-binary-mode' allows to switch a standard stream
1301 of the Emacs process to binary I/O mode.
1303 ** ASCII approximations to curved quotes are put in standard-display-table
1304 if the terminal cannot display curved quotes.
1306 ** Standard output and error streams now transliterate characters via
1307 standard-display-table, and encode output using locale-coding-system.
1310 ** New var `truncate-string-ellipsis' to choose how to indicate truncation.
1312 ** Miscellaneous name change
1314 For consistency with the usual Emacs spelling, the Lisp variable
1315 `hfy-optimisations' has been renamed to `hfy-optimizations'.
1316 The old name should still work, as an obsolescent alias.
1319 * Changes in Frames and Windows Code in Emacs 25.1
1322 ** Emacs can now draw horizontal scroll bars on some platforms that
1323 provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
1324 Horizontal scroll bars are turned off by default.
1325 *** New function `horizontal-scroll-bars-available-p' telling whether
1326 horizontal scroll bars are available on the underlying system.
1327 *** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
1328 bars on all existing and future frames.
1329 *** New function `toggle-horizontal-scroll-bar' to toggle horizontal
1330 scroll bars on the selected frame.
1331 *** New frame parameters `horizontal-scroll-bars' and
1332 `scroll-bar-height' to set horizontal scroll bars and their height
1333 for individual frames and in `default-frame-alist'.
1334 *** New functions `frame-scroll-bar-height' and
1335 `window-scroll-bar-height' return the height of horizontal scroll
1336 bars on a specific frame or window.
1337 *** `set-window-scroll-bars' now accepts five parameters where the last
1338 two specify height and type of the window's horizontal scroll bar.
1339 *** `window-scroll-bars' now returns type and sizes of horizontal scroll
1341 *** New buffer-local variables `horizontal-scroll-bar' and
1342 `scroll-bar-height'.
1345 ** New functions `frame-geometry' and `frame-edges' give access to a
1349 ** New functions `mouse-absolute-pixel-position' and
1350 `set-mouse-absolute-pixel-position' get/set screen coordinates of the
1354 ** The function `window-edges' now accepts three additional arguments to
1355 retrieve body, absolute and pixel edges of the window.
1358 ** The functions `window-inside-edges', `window-inside-pixel-edges' and
1359 `window-inside-absolute-pixel-edges' have been renamed to respectively
1360 `window-body-edges', `window-body-pixel-edges' and
1361 `window-absolute-body-pixel-edges'. The old names are kept as aliases.
1364 ** New function `window-absolute-pixel-position' to get the screen
1365 coordinates of a visible buffer position.
1368 ** The height of a frame's menu and tool bar are no longer counted in the
1369 frame's text height. This means that the text height stands only for
1370 the height of the frame's root window plus that of the echo area (if
1371 present). This was already the behavior for frames with external tool
1372 and menu bars (like in the Gtk builds) but has now been extended to all
1376 ** Frames now do not necessarily preserve the number of columns or lines
1377 they display when setting default font, menu bar, fringe width, or
1378 scroll bars. In particular, maximized and fullscreen frames are
1379 conceptually never resized if such settings change. For fullheight and
1380 fullwidth frames, the behavior may depend on the toolkit used.
1381 *** New option `frame-inhibit-implied-resize' if non-nil, means that
1382 setting default font, menu bar, fringe width, or scroll bars of a
1383 specific frame does not resize that frame in order to preserve the
1384 number of columns or lines it displays.
1387 ** New function `window-preserve-size' allows to preserve the size of
1388 windows without "fixing" it. It's supported by `fit-window-to-buffer',
1389 `temp-buffer-resize-mode' and `display-buffer'.
1392 ** New minor mode `window-divider-mode' and options
1393 `window-divider-default-places', `window-divider-default-bottom-width'
1394 and `window-divider-default-right-width'.
1397 ** New option `switch-to-buffer-in-dedicated-window' allows to customize
1398 how `switch-to-buffer' proceeds interactively when the selected window
1399 is strongly dedicated to its buffer.
1402 ** The option `even-window-heights' has been renamed to
1403 `even-window-sizes' and now handles window widths as well.
1405 ** Tearoff menus and detachable toolbars for Gtk+ has been removed.
1406 Those features have been deprecated in Gtk+ for a long time.
1410 *** etags no longer qualifies class members by default.
1411 By default, `etags' will not qualify class members for C-like
1412 object-oriented languages with their class names and namespaces, and
1413 will remove qualifications used explicitly in the code from the tag
1414 names it puts in TAGS files. This is so the etags.el back-end for
1415 `xref-find-definitions' is more accurate and produces less false
1418 Use --class-qualify (-Q) if you want the old default behavior of
1419 qualifying class members in C++, Java, and Objective C. Note that
1420 using -Q might make some class members become "unknown" to `M-.'
1421 (`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
1422 qualified names by hand.
1425 * Changes in Emacs 25.1 on Non-Free Operating Systems
1428 ** MS-Windows specific Emacs build scripts are no longer in the distribution
1429 This includes the makefile.w32-in files in various subdirectories, and
1430 the support files. The file nt/configure.bat now just tells the user
1431 to use the procedure described in nt/INSTALL, by running the Posix
1432 `configure' script in the top-level directory.
1435 ** Building Emacs for MS-Windows requires at least Windows XP
1436 or Windows Server 2003. The built binaries still run on all versions
1437 of Windows starting with Windows 9X.
1440 ** Emacs running on MS-Windows now supports the daemon mode.
1442 ** The byte counts in etags-generated TAGS files are now the same on
1443 MS-Windows as they are on other platforms.
1446 ** On OS X, configure creates a Cocoa ("Nextstep") build by default.
1447 Pass '--without-ns' to configure to create an X11 build, the old default.
1449 ** OS X 10.5 or older is no longer supported.
1451 ** OS X on PowerPC is no longer supported.
1454 ** New variable `ns-use-fullscreen-animation' controls animation for
1455 non-native NS fullscreen. The default is nil. Set to t to enable
1456 animation when entering and leaving fullscreen. For native OSX fullscreen
1460 ** The new function 'w32-application-type' returns the type of an
1461 MS-Windows application given the name of its executable program file.
1464 ----------------------------------------------------------------------
1465 This file is part of GNU Emacs.
1467 GNU Emacs is free software: you can redistribute it and/or modify
1468 it under the terms of the GNU General Public License as published by
1469 the Free Software Foundation, either version 3 of the License, or
1470 (at your option) any later version.
1472 GNU Emacs is distributed in the hope that it will be useful,
1473 but WITHOUT ANY WARRANTY; without even the implied warranty of
1474 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1475 GNU General Public License for more details.
1477 You should have received a copy of the GNU General Public License
1478 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
1484 paragraph-separate: "[
\f]*$"