1 GNU Emacs NEWS -- history of user-visible changes.
3 Copyright (C) 2014-2016 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 25.2
29 ** New configure option ‘--disable-build-details’ attempts to build an
30 Emacs that is more likely to be reproducible; that is, if you build
31 and install Emacs twice, the second Emacs is a copy of the first.
32 Deterministic builds omit the build date from the output of the
33 emacs-version and erc-cmd-SV functions, and the leave the following
34 variables nil: emacs-build-system, emacs-build-time,
37 ** Emacs no longer works on IRIX. We expect that Emacs users are not
38 affected by this, as SGI stopped supporting IRIX in December 2013.
41 * Startup Changes in Emacs 25.2
44 * Changes in Emacs 25.2
47 ** A number of accessors for the value returned by `file-attributes'
48 has been added. They are: `file-attribute-type',
49 `file-attribute-link-number', `file-attribute-user-id',
50 `file-attribute-group-id', `file-attribute-access-time',
51 `file-attribute-modification-time',
52 `file-attribute-status-change-time', `file-attribute-size',
53 `file-attribute-modes', `file-attribute-inode-number', and
54 `file-attribute-device-number'
57 ** `align-regexp' has a separate history for its interactive argument
58 `align-regexp' no longer shares its history with all other
59 history-less functions that use `read-string'
62 ** The networking code has been reworked so that it's more
63 asynchronous than it was (when specifying :nowait t in
64 `make-network-process'). How asynchronous it is varies based on the
65 capabilities of the system, but on a typical GNU/Linux system the DNS
66 resolution, the connection, and (for TLS streams) the TLS negotiation
67 are all done without blocking the main Emacs thread. To get
68 asynchronous TLS, the TLS boot parameters have to be passed in (see
69 the manual for details).
71 Certain process oriented functions (like `process-datagram-address')
72 will block until socket setup has been performed. The recommended way
73 to deal with asynchronous sockets is to avoid interacting with them
74 until they have changed status to "run". This is most easily done
75 from a process sentinel.
77 ** ‘make-network-process’ and ‘open-network-stream’ sometimes allowed
78 :service to be an integer string (e.g., :service "993") and sometimes
79 required an integer (e.g., :service 993). This difference has been
80 eliminated, and integer strings work everywhere.
82 ** It is possible to disable attempted recovery on fatal signals
84 Two new variables allow to disable attempts to recover from stack
85 overflow and to avoid automatic auto-save when Emacs is delivered a
86 fatal signal. `attempt-stack-overflow-recovery', if set to `nil',
87 will disable attempts to recover from C stack overflows; Emacs will
88 then crash as with any other fatal signal.
89 `attempt-orderly-shutdown-on-fatal-signal', if set to `nil', will
90 disable attempts to auto-save the session and shut down in an orderly
91 fashion when Emacs receives a fatal signal; instead, Emacs will
92 terminate immediately. Both variables are non-`nil' by default.
93 These variables are for users who would like to avoid the small
94 probability of data corruption due to techniques Emacs uses to recover
98 * Editing Changes in Emacs 25.2
101 * Changes in Specialized Modes and Packages in Emacs 25.2
106 *** A new `s' command for switching to another eww buffer via the minibuffer.
109 *** The `o' command (`shr-save-contents') has moved to `O' to avoid collision
110 with the `o' command from `image-map'.
113 ** The commands that add ChangeLog entries now prefer a VCS root directory
114 for the ChangeLog file, if none already exists. Customize
115 `change-log-directory-files' to nil for the old behavior.
118 ** Support for non-string values of `time-stamp-format' has been removed.
123 *** New connection method "sg", which allows to edit files under
127 *** New connection method "doas" for OpenBSD hosts.
130 ** `auto-revert-use-notify' is set back to t in `global-auto-revert-mode'.
133 * New Modes and Packages in Emacs 25.2
136 * Incompatible Lisp Changes in Emacs 25.2
139 ** Resizing a frame no longer runs `window-configuration-change-hook'.
140 Put your function on `window-size-change-functions' instead.
143 * Lisp Changes in Emacs 25.2
145 ** New var syntax-ppss-table to control the syntax-table used in syntax-ppss
147 ** Autoload files can be generated without timestamps,
148 by setting `autoload-timestamps' to nil.
149 FIXME As an experiment, nil is the current default.
150 If no insurmountable problems before next release, it can stay that way.
152 ** `ert-with-function-mocked' of 'ert-x package allows mocking of functions
156 ** `gnutls-boot' now takes a parameter :complete-negotiation that says
157 that negotiation should complete even on non-blocking sockets.
160 ** New functions `window-pixel-width-before-size-change' and
161 `window-pixel-height-before-size-change' allow to detect which window
162 changed size when `window-size-change-functions' are run.
165 * Changes in Emacs 25.2 on Non-Free Operating Systems
167 ** Intercepting hotkeys on Windows 7 and later now works better.
168 The new keyboard hooking code properly grabs system hotkeys such as
169 Win-* and Alt-TAB, in a way that Emacs can get at them before the
170 system. This makes the `w32-register-hot-key' functionality work
171 again on all versions of MS-Windows starting with Windows 7. On
172 Windows NT and later you can now register any hotkey combination. (On
173 Windows 9X, the previous limitations, spelled out in the Emacs manual,
177 * Installation Changes in Emacs 25.1
180 ** Building Emacs now requires C99 or later.
183 ** Building Emacs now requires GNU make, version 3.81 or later.
186 ** New configure option --with-cairo.
187 This builds Emacs with Cairo drawing. As a side effect, it provides
188 support for built-in printing, when Emacs was built with GTK+.
189 Cairo drawing is an experimental feature in Emacs, and subject to
190 change in future releases.
193 ** New configure option --with-modules.
194 This enables support for loading dynamic modules; see below.
197 ** By default, Emacs no longer works on IRIX. We expect that Emacs
198 users are not affected by this, as SGI stopped supporting IRIX in
199 December 2013. If you are affected, please send a bug report. You
200 should be able to work around the problem either by porting the Emacs
201 undumping code to GCC under IRIX, or by configuring --with-wide-int,
202 or by sticking with Emacs 24.4.
205 ** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
206 The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
207 since Emacs 24.4, and the other variants were undocumented and were
208 obstacles to maintenance and development. GC_MARK_STACK and its
209 related symbols have been removed from the C internals.
212 ** 'configure' now prefers gnustep-config when configuring GNUstep.
213 If gnustep-config is not available, the old heuristics are used.
216 ** 'configure' now prefers inotify to gfile for file notification,
217 unless gfile is explicitly requested via --with-file-notification='gfile'.
220 ** 'configure' detects the kqueue file notification library on *BSD
221 and Mac OS X machines.
224 ** The configure option '--with-pkg-config-prog' has been removed.
225 Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
228 ** The configure option '--with-mmdf' has been removed.
229 It was no longer useful, as it relied on libraries that are no longer
230 supported, and its presence led to confusion during configuration.
231 This affects only the 'movemail' utility; Emacs itself can still
232 process MMDF-format files as before.
235 ** The configure option '--enable-silent-rules' is now the default,
236 and silent rules are now quieter. To get the old behavior where
237 'make' chatters a lot, configure with '--disable-silent-rules' or
238 build with 'make V=1'.
241 ** The configure option '--with-gameuser' now allows you to specify a
242 group instead of a user if its argument is prefixed by ':' (a colon).
243 This will cause the game score files in ${localstatedir}/games/emacs
244 to be owned by that group, and the helper program for updating them to
245 be installed setgid. The option now defaults to the 'games' group.
248 ** The `grep-changelog' script (and its manual page) are no longer included.
249 It has no particular connection to Emacs and has not changed in years,
250 so if you want to use it, you can always take a copy from an older Emacs.
253 ** Emacs 25 comes with a new set of icons.
254 Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
255 The old Emacs logo icons are available as `emacs23.png' in the same location.
258 ** New make target `check-expensive' to run additional tests.
259 This includes all tests which run via "make check", plus additional
260 tests which take more time to perform.
263 * Startup Changes in Emacs 25.1
266 ** When Emacs is given a file as a command line argument and
267 `initial-buffer-choice' is non-nil, display both the file and
268 `initial-buffer-choice'. When Emacs is given more than one file and
269 `initial-buffer-choice' is non-nil, show `initial-buffer-choice'
270 and *Buffer List*. This makes Emacs convenient to use from the
271 command line when `initial-buffer-choice' is non-nil.
274 ** The value of ‘initial-scratch-message’ is now treated as a doc string
275 and can contain escape sequences for command keys, quotes, and the like.
278 * Changes in Emacs 25.1
281 ** Xwidgets: a new feature for embedding native widgets inside Emacs buffers.
282 If you have gtk3 and webkitgtk3 installed, and Emacs was built with
283 xwidget support, you can access the embedded webkit browser with `M-x
284 xwidget-webkit-browse-url'. This opens a new buffer with the embedded
285 browser. The buffer will have a new mode, `xwidget-webkit-mode'
286 (similar to `image-mode'), which supports the webkit widget.
289 *** New functions for xwidget-webkit mode `xwidget-webkit-insert-string',
290 `xwidget-webkit-adjust-size-dispatch', `xwidget-webkit-back',
291 `xwidget-webkit-browse-url', `xwidget-webkit-reload',
292 `xwidget-webkit-current-url', `xwidget-webkit-scroll-backward',
293 `xwidget-webkit-scroll-forward', `xwidget-webkit-scroll-down',
294 `xwidget-webkit-scroll-up'.
297 ** Emacs can now load shared/dynamic libraries (modules).
298 A dynamic Emacs module is a shared library that provides additional
299 functionality for use in Emacs Lisp programs, just like a package
300 written in Emacs Lisp would. The functions `load', `require',
301 `load-file', etc. were extended to load such modules, as they do with
302 Emacs Lisp packages. The new variable `module-file-suffix' holds the
303 system-dependent value of the file-name extension (`.so' on Posix
304 hosts) of the module files.
306 A module should export a C-callable function named
307 `emacs_module_init', which Emacs will call as part of the call to
308 `load' or `require' which loads the module. It should also export a
309 symbol named `plugin_is_GPL_compatible' to indicate that its code is
310 released under the GPL or compatible license; Emacs will refuse to
311 load modules that don't export such a symbol.
313 If a module needs to call Emacs functions, it should do so through the
314 API defined and documented in the header file `emacs-module.h'. Note
315 that any module that provides Lisp-callable functions will have to use
316 Emacs functions such as `fset' and `funcall', in order to register its
317 functions with the Emacs Lisp interpreter.
319 Modules can create `user-ptr' Lisp objects that embed pointers to C
320 struct's defined by the module. This is useful for keeping around
321 complex data structures created by a module, to be passed back to the
322 module's functions. User-ptr objects can also have associated
323 "finalizers" -- functions to be run when the object is GC'ed; this is
324 useful for freeing any resources allocated for the underlying data
325 structure, such as memory, open file descriptors, etc. A new
326 predicate `user-ptrp' returns non-nil if its argument is a `user-ptr'
329 Loadable modules in Emacs are an experimental feature, and subject to
330 change in future releases. For that reason, their support is disabled
331 by default, and must be enabled by using the `--with-modules' option
335 ** A second dir-local file (.dir-locals-2.el) is now accepted.
336 See the variable `dir-locals-file-2' for more information.
339 ** Network security (TLS/SSL certificate validity and the like) is
340 added via the new Network Security Manager (NSM) and controlled via
341 the `network-security-level' variable.
344 ** International domain names (IDNA) are now encoded via the new
345 puny.el library, so that one can visit web sites like
346 "http://méxico.icom.museum".
349 ** C-h l now also lists the commands that were run.
351 ** The new M-s M-w key binding uses eww to search the web for the
355 ** The new `timer-list' command lists all active timers in a buffer
356 where you can cancel them with the `c' command.
358 ** M-x suggests shorthands and ignores obsolete commands for completion.
359 ** x-select-enable-clipboard is renamed select-enable-clipboard.
360 x-select-enable-primary and renamed select-enable-primary.
361 Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
362 name it), with the proviso that on some systems (e.g. Windows)
363 select-enable-primary is ineffective since the system doesn't
364 have the equivalent of a primary selection.
367 ** New option `switch-to-buffer-in-dedicated-window' allows you to
368 customize how `switch-to-buffer' proceeds interactively when the
369 selected window is strongly dedicated to its buffer.
372 ** The option `even-window-heights' has been renamed to
373 `even-window-sizes' and now handles window widths as well.
376 ** New function `read-multiple-choice' use to prompt for
377 multiple-choice questions, with a handy way to display help texts.
380 ** terpri gets an optional arg ENSURE to conditionally output a newline.
383 ** `insert-register' now leaves point after the inserted text
384 when called interactively. A prefix argument toggles this behavior.
387 ** The new variable `term-file-aliases' replaces some files from lisp/term.
388 The function `tty-run-terminal-initialization' consults this variable
389 when deciding what terminal-specific initialization code to run.
392 ** New variable `system-configuration-features', listing some of the
393 main features that Emacs was compiled with. This is mainly intended
394 for use in Emacs bug reports.
397 ** A password is now hidden also when typed in batch mode. Another
398 hiding character but the default `.' can be used by let-binding the
399 variable `read-hide-char'.
402 ** New input methods: `tamil-dvorak' and `programmer-dvorak'.
405 * Editing Changes in Emacs 25.1
408 ** M-x suggests shorthands and ignores obsolete commands for completion.
413 *** Successive single-char deletions are collapsed in the undo-log just like
414 successive char insertions. Which commands invoke this behavior is
415 controlled by the new `undo-auto-amalgamate' function. See the node
416 "Undo" in the ELisp manual for more details.
419 *** The heuristic used to insert `undo-boundary' after each command
420 has changed, so that if a command causes changes in more than just the
421 current buffer, Emacs now calls `undo-boundary' in every buffer
422 affected by the command.
425 ** New command `comment-line' bound to `C-x C-;'.
427 ** New and improved facilities for inserting Unicode characters
430 *** Unicode names entered via C-x 8 RET now use substring completion by default.
433 *** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
434 € № ← → ↔ − ≈ ≠ ≤ ≥. As before, you can type C-x 8 C-h to list shorthands.
437 *** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”
438 as you type. See also the new variable ‘text-quoting-style’.
441 ** New minor mode global-eldoc-mode is enabled by default.
444 ** Emacs now uses "bracketed paste mode" on text terminals that support it.
445 Bracketed paste mode causes text terminals to wrap pasted text in special
446 escape sequences that allow Emacs to tell the difference between text
447 you type and text you paste from other applications. Emacs then
448 avoids interpreting each character in the pasted text as it does with
449 keyboard input, which results in a paste experience similar to that
450 under a window system, and significant performance improvements when
451 pasting large amounts of text.
453 Bracketed paste mode is disabled by default, so Emacs automatically
454 enables it at startup if the terminal supports it.
457 ** Emacs now supports the latest version of the UBA.
458 The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
459 was updated to support all the latest additions and changes introduced
460 in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
461 This includes full support for directional isolates and the
462 Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
466 ** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.
469 ** New buffer-local `electric-pair-local-mode'.
472 ** New variable `fast-but-imprecise-scrolling' inhibits
473 fontification during full screen scrolling operations, giving less
474 hesitant operation during auto-repeat of C-v, M-v at the cost of
475 possible inaccuracies in the end position.
478 ** New documentation command `describe-symbol'.
479 Works for functions, variables, faces, etc. It is bound to `C-h o' by
483 ** New function `custom-prompt-customize-unsaved-options' checks for
484 unsaved customizations and prompts user to customize (if found). It
485 is intended for adding to 'kill-emacs-query-functions'.
488 ** The old `C-x w' bindings in hi-lock-mode are officially deprecated
489 in favor of the global `M-s h' bindings introduced in Emacs-23.1.
490 They'll disappear soon.
493 ** New bindings for 'query-replace-map'.
494 `undo', undo the last replacement; bound to `u'.
495 `undo-all', undo all replacements; bound to `U'.
498 * Changes in Specialized Modes and Packages in Emacs 25.1
503 *** New command `checkdoc-package-keywords' checks if the
504 current package keywords are recognized. Set the new option
505 `checkdoc-package-keywords-flag' to non-nil to make
506 `checkdoc-current-buffer' call this function automatically.
509 *** New function `checkdoc-file' checks for style errors.
510 It's meant for use together with `compile':
511 emacs -batch --eval "(checkdoc-file \"subr.el\")"
516 *** The desktop format version has been upgraded from 206 to 208.
517 Although Emacs 25.1 can read a version 206 desktop, earlier Emacsen
518 cannot read a version 208 desktop. To upgrade your desktop file, you
519 must explicitly request the upgrade, by C-u M-x desktop-save. You are
520 recommended to do this as soon as you have firmly upgraded to Emacs
521 25.1 (or later). Should you ever need to downgrade your desktop file
522 to version 206, you can do this with C-u C-u M-x desktop-save.
525 ** New function `bookmark-set-no-overwrite' bound to C-x r M.
526 It raises an error if a bookmark of that name already exists,
527 unlike `bookmark-set' which silently updates an existing bookmark.
532 *** New user options `mm-html-inhibit-images' and `mm-html-blocked-images'
533 now control how mm-* functions fetch and display images in an HTML
534 message. Gnus still uses `gnus-inhibit-images' and `gnus-blocked-images'
535 for that purpose, i.e., binds mm-html- variables with those gnus-
536 variables, but other packages do not have to bind gnus- variables now.
539 *** `mm-inline-text-html-with-images' has been removed.
540 Use `mm-html-inhibit-images' instead. Note that the value is opposite
546 *** `imap-ssl-program' has been removed, and imap.el uses the internal
547 GnuTLS encryption functions if possible.
552 *** `json-pretty-print' and `json-pretty-print-buffer' now maintain
553 the ordering of object keys by default.
556 *** New commands `json-pretty-print-ordered' and
557 `json-pretty-print-buffer-ordered' pretty prints JSON objects with
558 object keys sorted alphabetically.
561 ** Prog mode has some support for multi-mode indentation.
562 This allows better indentation support in modes that support multiple
563 programming languages in the same buffer, like literate programming
564 environments or ANTLR programs with embedded Python code.
566 A major mode can provide indentation context for a sub-mode through
567 the `prog-indentation-context' variable. To support this, modes that
568 provide indentation should use `prog-widen' instead of `widen' and
569 `prog-first-column' instead of a literal zero. See the node
570 "Mode-Specific Indent" in the ELisp manual for more details.
572 ** Prettify Symbols mode
575 *** Prettify Symbols mode supports custom composition predicates. By
576 overriding the default `prettify-symbols-compose-predicate', modes can
577 specify in which contexts a symbol may be displayed as some Unicode
578 character. `prettify-symbols-default-compose-p' is the default which
579 is suitable for most programming languages such as C or Lisp (but not
583 *** Symbols can be unprettified while point is inside them.
584 New variable `prettify-symbols-unprettify-at-point' configures this.
586 ** Enhanced xterm support
589 *** The new variable `xterm-screen-extra-capabilities' for configuring xterm.
590 This variable tells Emacs which advanced capabilities are available in
591 the xterm terminal emulator used to display Emacs text-mode frames.
592 The default is to check each capability, and use it if available.
593 (This variable was introduced in Emacs 24.1, but was not announced in
597 *** Killing text now also sets the CLIPBOARD/PRIMARY selection
598 in the surrounding GUI (using the OSC-52 escape sequence). This only works
599 if your xterm supports it and enables the `allowWindowOps' options (disabled
600 by default at least in Debian, for security reasons).
602 Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
603 escape sequence) if your xterm has the feature enabled but for that you
604 additionally need to add `getSelection' to `xterm-extra-capabilities'.
607 *** `xterm-mouse-mode' now supports mouse-tracking (if your xterm supports it).
610 ** The way to turn on and off `save-place' mode has changed.
611 It is no longer sufficient to load the saveplace library and set
612 `save-place' non-nil. Instead, use the two new minor modes:
613 `save-place-mode' turns on saving last place in every file, and
614 `save-place-local-mode' does that only for the file in whose buffer it
615 is invoked. The `save-place' variable is now an obsolete alias for
616 `save-place-mode', which replaces it, and `toggle-save-place' is an
617 obsolete alias for the new `save-place-local-mode' command.
622 *** ERC can now hide message types by network or channel.
623 `erc-hide-list' will hide all messages of the specified type, while
624 `erc-network-hide-list' and `erc-channel-hide-list' will only hide the
625 specified message types for the respective specified targets.
627 *** New variable `erc-default-port-tls' used to connect to TLS IRC
631 *** Reconnection is now asynchronous.
634 *** Nick completion is now case-insensitive again after inadvertently
635 being made case-sensitive in Emacs 24.2.
640 *** New commands, key binds, and menu items.
642 **** `<' and `>' for navigating previous and next tracks in playlist
644 **** New play/pause command `mpc-toggle-play' bound to `s'
646 **** `g' bound to new command `mpc-seek-current' will navigate current
649 **** New commands `mpc-toggle-{consume,repeat,single,shuffle}' for
650 toggling playback modes.
653 *** Now supports connecting to a UNIX domain socket.
656 *** Looks at more image file names to use as album art.
657 Case-insensitively tries for .folder.png (freedesktop) and folder.jpg
658 (XP) in addition to cover.jpg.
661 *** Searches in more locations for MPD configuration files.
662 MPD supports the XDG base directory specification since version 0.17.6.
667 *** `midnight-mode' is now a proper minor mode.
670 *** clean-buffer-*-regexps can now specify buffers via predicate functions.
675 *** New "external" package status.
676 An external package is any installed package that's not built-in and
677 not from `package-user-dir', which usually means it's from an entry in
678 `package-directory-list'. They are treated much like built-in
679 packages, in that they cannot be deleted through the package menu and
680 are not considered for upgrades.
682 The effect is that a user can manually place a specific version of a
683 package inside `package-directory-list' and the package menu will
687 *** If a package is available on multiple archives and one has higher
688 priority (as per `package-archive-priorities') only that one is
689 listed. This can be configured with `package-menu-hide-low-priority'.
692 *** `package-menu-toggle-hiding' now toggles the hiding of packages.
693 This includes the above-mentioned low-priority packages, as well as
694 available packages whose version is lower than the currently installed
695 version (which were previously impossible to display).
696 This allows users to downgrade a package if a lower version is
700 *** When filtering the package menu, keywords starting with "arc:" or
701 "status:" represent package archive or status, respectively, instead
705 *** Most functions which involve downloading information now take an
706 ASYNC argument. If it is non-nil, package.el performs the download(s)
710 *** New variable `package-menu-async' controls whether the
711 package-menu uses asynchronous downloads.
714 *** `package-install-from-buffer' and `package-install-file' work on directories.
715 This follows the same rules as installing from a .tar file, except the
716 -pkg file is optional.
719 *** Packages which are dependencies of other packages cannot be deleted.
720 The FORCE argument to `package-delete' overrides this.
723 *** New custom variable `package-selected-packages' tracks packages
724 which were installed by the user (as opposed to installed as
725 dependencies). This variable can also be manually customized.
728 *** New command `package-install-selected-packages' installs all
729 packages from `package-selected-packages' which are currently missing.
732 *** `package-install' function now takes a DONT-SELECT argument. If
733 this function is called interactively or if DONT-SELECT is nil, add the
734 package being installed to `package-selected-packages'.
737 *** New command `package-autoremove' removes all packages which were
738 installed strictly as dependencies but are no longer needed.
743 When you invoke `shell' interactively, the *shell* buffer will now
744 display in a new window. However, you can customize this behavior via
745 the `display-buffer-alist' variable. For example, to get
746 the old behavior -- *shell* buffer displays in current window -- use
747 (add-to-list 'display-buffer-alist
748 '("^\\*shell\\*$" . (display-buffer-same-window))).
752 *** The `:protection' slot option is not obeyed any more.
754 *** The `newname' argument to constructors is optional&deprecated.
755 If you need your objects to be named, do it by inheriting from `eieio-named'.
757 *** The <class>-list-p and <class>-child-p functions are declared obsolete.
759 *** The <class> variables are declared obsolete.
761 *** The <initarg> variables are declared obsolete.
763 *** defgeneric and defmethod are declared obsolete.
764 Use the equivalent facilities from cl-generic.el instead.
766 *** `constructor' is now an obsolete alias for `make-instance'.
767 --- `pcase' accepts a new UPattern `eieio'.
772 *** New command `ido-bury-buffer-at-head' bound to C-S-b
773 Bury the buffer at the head of `ido-matches', analogous to how C-k
774 kills the buffer at head.
777 *** A prefix argument to `ido-restrict-to-matches' will reverse its
778 meaning, and the list is restricted to those elements that do not
779 match the current input.
784 *** You can use <UP> and <DOWN> arrow keys to move through history by lines.
785 The new commands `next-line-or-history-element' and
786 `previous-line-or-history-element', bound to <UP> and <DOWN> in the
787 minibuffer, allow by-line movement through minibuffer history,
788 similarly to an ordinary buffer. Only when point moves over
789 the bottom/top of the minibuffer it goes to the next/previous history
790 element. `M-p' and `M-n' still move directly to previous/next history
793 ** Search and Replace
796 *** `isearch' and `query-replace' can now perform character folding in matches.
797 Isearch does that by default, while `query-replace' will do that if
798 the new variable `replace-character-fold' is customized to a non-nil
799 value. This is analogous to case folding, but instead of disregarding
800 case variants, it disregards wider classes of distinctions between
801 similar characters. (Case folding is a special case of character
802 folding.) This means many characters in the search string will match
803 entire groups of characters instead of just themselves.
805 For instance, the " will match all variants of double quotes (like “
806 and ”), and the letter a will match all of its accented cousins, even
807 those composed of multiple characters, as well as many other symbols
810 Character folding is enabled by customizing `search-default-mode' to
811 the value `character-fold-to-regexp'. If you want to turn character
812 folding off, customize the value of `search-default-mode' to the `nil'
813 value. You can also toggle character folding in the middle of a
814 search by typing `M-s ''.
817 *** New user option `search-default-mode'.
818 This option specifies the default mode for Isearch. The default
819 value, `character-fold-to-regexp' specifies that Isearch should fold
820 characters when searching.
823 *** New function `character-fold-to-regexp' can be used
824 by searching commands to produce a regexp matching anything that
825 character-folds into STRING.
828 *** The new M-s M-w key binding uses eww to search the web for the
829 text in the region. The search engine to use for this is specified by
830 the customizable variable `eww-search-prefix'.
833 *** Query-replace history is enhanced.
834 When query-replace reads the FROM string from the minibuffer, typing
835 `M-p' will now show previous replacements as "FROM SEP TO", where FROM
836 and TO are the original text and its replacement, and SEP is an arrow
837 string defined by the new variable `query-replace-from-to-separator'.
838 To select a prior replacement, type `M-p' until the desired
839 replacement appears in the minibuffer, and then exit the minibuffer by
844 *** If `quick-calc' is called with a prefix argument, insert the
845 result of the calculation into the current buffer.
848 ** In Edebug, you can now set the initial mode with C-x C-a C-m. With
849 this you can tell Edebug not to stop at the start of the first
850 instrumented function.
855 *** New minor mode `global-eldoc-mode'
856 It is turned on by default, and affects `*scratch*' and other buffers
857 whose major mode supports Emacs Lisp.
860 *** `eldoc-documentation-function' now defaults to `ignore'
863 *** `describe-char-eldoc' displays information about character at point,
864 and can be used as a default value of `eldoc-documentation-function'. It is
865 useful when, for example, one needs to distinguish various spaces (e.g. ] [,
866 ] [, ] [, etc.) while using mono-spaced font.
871 *** HTML can now be rendered using variable-width fonts.
874 *** A new command `F' (`eww-toggle-fonts') can be used to toggle
875 whether to use variable-pitch fonts or not. The user can also
876 customize the `shr-use-fonts' variable.
879 *** A new command `C' (`eww-toggle-colors') can be used to toggle
880 whether to use the HTML-specified colors or not. The user can also
881 customize the `shr-use-colors' variable.
884 *** A new command `R' (`eww-readable') will try do identify the main
885 textual parts of a web page and display only that, leaving menus and
886 the like off the page.
889 *** A new command `D' (`eww-toggle-paragraph-direction') allows you to
890 toggle the paragraph direction between left-to-right and right-to-left.
893 *** Images that are being loaded are now marked with grey
894 "placeholder" images of the size specified by the HTML. They are then
895 replaced by the real images asynchronously, which will also now
896 respect width/height HTML specs (unless they specify widths/heights
897 bigger than the current window).
900 *** You can now use several eww buffers in parallel by renaming eww
901 buffers you want to keep separate.
904 *** Partial state of the eww buffers (the URIs and the titles of the
905 pages visited) is now preserved in the desktop file.
908 *** `eww-after-render-hook' is now called after eww has rendered
909 the data in the buffer.
912 *** The `eww-reload' command now takes a prefix to not reload via
913 the net, but just use the local copy of the HTML.
916 *** The DOM shr and eww uses has been changed to the general Emacs
917 xml.el/libxml2 DOM, and a new package dom.el has been added to
918 interact with this DOM. See the Emacs Lisp manual for interface
922 *** `mailcap-mime-data' is now consulted when displaying PDF files.
925 *** The new `S' command will list all eww buffers, and allow managing
929 *** https pages with valid certificates have headers marked in green, while
930 invalid certificates are marked in red.
935 *** text/html messages that contain inline image parts will be
936 transformed into multipart/related messages before sending.
939 *** The `message-valid-fqdn-regexp' variable has been removed, since
940 there are now top-level domains added all the time. Message will no
941 longer warn about sending emails to top-level domains it hasn't heard
944 *** `message-beginning-of-line' (bound to C-a) understands folded headers.
945 In `visual-line-mode' it will look for the true beginning of a header
946 while in non-`visual-line-mode' it will move the point to the indented
950 ** In Show Paren Mode, a parenthesis can be highlighted when point
951 stands inside it, and certain parens can be highlighted when point is
952 at BOL or EOL, or in whitespace there. To enable these, customize,
953 respectively, `show-paren-when-point-inside-paren' or
954 `show-paren-when-point-in-periphery'.
957 ** If gpg2 exists on the system, it is now used as the default value
958 of `epg-gpg-program' (instead of gpg).
963 *** Images are automatically scaled before displaying based on the
964 `image-scaling-factor' variable (if Emacs supports scaling the images
968 *** Images inserted with `insert-image' and related functions get a
969 keymap put into the text properties (or overlays) that span the
970 image. This keymap binds keystrokes for manipulating size and
971 rotation, as well as saving the image to a file. These commands are
972 also available in `image-mode'.
975 *** A new library for creating and manipulating SVG images has been
976 added. See the "SVG Images" section in the lispref manual for
980 *** New setf-able function to access and set image parameters is
981 provided: `image-property'.
987 *** Strings after `:documentation' are highlighted as docstrings.
988 This enhances Lisp mode fontification to handle documentation of the
989 form `(:documentation "the doc string")' used in Common Lisp code for
990 CLOS class and slot documentation.
995 *** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
998 *** C-x C-x in rectangle-mark-mode now cycles through the four corners.
999 *** `string-rectangle' provides on-the-fly preview of the result.
1002 ** New font-lock functions `font-lock-ensure' and `font-lock-flush'.
1003 These should be used in preference to `font-lock-fontify-buffer' when
1007 ** Macro `minibuffer-with-setup-hook' can optionally append a function
1008 to `minibuffer-setup-hook'.
1010 If the first argument of the macro is of the form `(:append FUN)',
1011 then FUN will be appended to `minibuffer-setup-hook', instead of
1016 *** New functions `cl-fresh-line', `cl-digit-char-p', and `cl-parse-integer'.
1019 *** `pcase' accepts the new UPattern `cl-struct'.
1021 ** Calendar and diary
1024 *** The default `diary-file' is now located in .emacs.d.
1027 *** New commands to insert diary entries with Chinese dates:
1028 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
1029 `diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
1032 *** The calendar can now list and mark diary entries with Chinese dates.
1033 See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
1036 *** The option `calendar-mode-line-format' can now be nil,
1037 which means to do nothing special with the mode line in calendars.
1040 *** New option `calendar-weekend-days'.
1041 The option customizes which day headers receive the
1042 `calendar-weekend-header' face.
1045 *** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.
1048 *** Many items obsolete since at least version 23.1 have been removed.
1049 The majority were function/variable/face aliases, too numerous to list here.
1052 **** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
1053 `calendar-two-frame-setup', `european-calendar', `american-calendar'.
1055 **** Hooks `cal-menu-load-hook', `cal-x-load-hook'.
1057 **** Macro `calendar-for-loop'.
1059 **** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
1061 **** The nil and list forms of `diary-display-function'.
1064 ** New ERT function `ert-summarize-tests-batch-and-exit'.
1065 If the output of ERT tests in batch mode execution can be saved to a
1066 log file, then it can be passed as an argument to the above function
1067 to produce a neat summary.
1070 ** New js.el option `js-indent-first-init'.
1071 It was renamed from `js-indent-first-initialiser', to avoid issues
1072 with American vs British spelling.
1077 ** Info mode now displays symbol names in fixed-pitch font.
1078 If you want to get the old behavior back, customize the `Info-quoted'
1079 face to use the same definitions as the default face.
1082 *** `Info-fontify-maximum-menu-size' can be t for no limit.
1085 *** `info-display-manual' can now be given a prefix argument which (any
1086 non-nil value) directs the command to limit the completion
1087 alternatives to currently visited manuals.
1090 ** ntlm.el has support for NTLM2.
1095 *** The Rmail commands `d', `C-d' and `u' take optional repeat counts
1096 to delete or undelete multiple messages.
1099 *** Rmail can now render HTML mail messages if your Emacs was built with
1100 libxml2 or if you have the Lynx browser installed. By default, Rmail
1101 will display the HTML version of a mail message that has both HTML and
1102 plain text parts, if display of HTML email is possible; customize the
1103 `rmail-mime-prefer-html' option to `nil' if you don't want that.
1106 *** In the commands that make summaries by subject, recipients, or senders,
1107 you can no longer use commas to separate regular expressions.
1110 ** SES now supports local printer functions; see `ses-define-local-printer'.
1112 ** Shell-script Mode
1114 *** In sh-mode you can now use `sh-shell' as a file-local variable to
1115 specify the type of shell in use (bash, csh, etc).
1118 *** New value `always' for `sh-indent-after-continuation'.
1119 This provides old-style ("dumb") indentation of continued lines.
1120 See the doc string of `sh-indent-after-continuation' for details.
1124 *** Fatal TLS errors are now silent by default.
1127 *** If Emacs isn't built with TLS support, an external TLS-capable
1128 program is used instead. This program used to be run in --insecure
1129 mode by default, but has now changed to be secure instead, and will
1130 fail if you try to connect to non-verifiable hosts. This is
1131 controlled by the `tls-program' variable.
1136 *** The URL package accepts now the protocols "ssh", "scp" and "rsync".
1137 When `url-handler-mode' is enabled, file operations for these
1138 protocols as well as for "telnet" and "ftp" are passed to Tramp.
1141 *** The URL package allows customizing the `url-user-agent' string.
1142 The new `url-user-agent' variable can be customized to be a string or
1146 *** The new interface variable `url-request-noninteractive' can be used
1147 to specify that we're running in a noninteractive context, and that
1148 we should not be queried about things like TLS certificate validity.
1151 *** `url-mime-accept-string' can now be used as in "interface"
1152 variable, meaning you can bind it around an `url-retrieve' call.
1155 *** If URL is used with a https connection, the first callback argument
1156 plist will contain a :peer element that has the output of
1157 `gnutls-peer-status' (if Emacs is built with GnuTLS support).
1160 *** The new function `url-cookie-delete-cookie' can be used to
1161 programmatically delete all cookies, or cookies from a specific
1167 *** New connection method "afp", which allows you to access Mac OS X
1168 volumes via the Apple Filing Protocol.
1171 *** New connection method "nc", which allows you to access dumb
1175 *** Method-specific parameters can be overwritten now with variable
1176 `tramp-connection-properties'.
1179 *** Handler for `file-notify-valid-p' for remote machines that support
1180 filesystem notifications.
1185 *** New user variable `sql-default-directory' enables remote
1186 connections using Tramp.
1189 *** New command `sql-send-line-and-next'.
1190 This command, bound to `C-c C-n' by default, sends the current line to
1191 the SQL process and advances to the next line, skipping whitespace and
1195 *** Added support for Vertica SQL.
1197 ** VC and related modes
1200 *** Basic push support, via `vc-push', bound to `C-x v P'.
1201 Implemented for Bzr, Git, Hg. As part of this change, the pre-existing
1202 (undocumented) command vc-hg-push now behaves slightly differently.
1205 *** The new command vc-region-history shows the log+diff of the active region.
1208 *** You can refresh the VC state of a file buffer with `M-x vc-refresh-state'.
1209 This command is useful when you perform version control commands
1210 outside Emacs (e.g., from the shell prompt), or if you switch the VC
1211 back-end for the buffer's file, or remove it from version control.
1214 *** The VC state indicator in the mode line now defaults to more
1215 colorful faces to make it more obvious to the user what the state is.
1216 See the `vc-faces' customization group.
1219 *** New option `vc-annotate-background-mode' controls whether
1220 the color range from `vc-annotate-color-map' is applied to the
1221 background or to the foreground.
1224 *** `compare-windows' now compares text with the most recently selected window
1225 instead of the next window. If you want the previous behavior of
1226 comparing with the next window, customize the new option
1227 `compare-windows-get-window-function' to the value
1228 `compare-windows-get-next-window'.
1231 *** Two new faces `compare-windows-removed' and `compare-windows-added'
1232 replace the face `compare-windows', which is now an obsolete alias for
1233 `compare-windows-added'.
1236 *** The VC state indicator in the mode line now has different faces
1237 corresponding to each of the possible states. See the `vc-faces'
1238 customization group.
1241 *** `log-edit-insert-changelog' converts "(tiny change)" to
1242 "Copyright-paperwork-exempt: yes". Set `log-edit-rewrite-tiny-change'
1243 nil to disable this.
1246 ** VHDL mode now supports VHDL'08.
1251 *** Decimal display mode uses "," groups, so it's more
1252 fitting for use in money calculations
1255 *** Factorial works with non-integer inputs.
1260 *** Hide-IfDef mode now support full C/C++ expressions in macros,
1261 macro argument expansion, interactive macro evaluation and automatic
1262 scanning of #define'd symbols.
1265 *** New command `hif-evaluate-macro', bound to `C-c @ e', displays the
1266 result of evaluating a macro.
1269 *** New command `hif-clear-all-ifdef-define', bound to `C-c @ C', clears
1270 all defined symbols in `hide-ifdef-env'.
1273 *** New custom variable `hide-ifdef-header-regexp' to define C/C++ header
1274 file name patterns. Defaults to files whose extension is one of `.h',
1275 `.hh', `.hpp', `.hxx', or `.h++', matched case-insensitively.
1278 *** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
1279 reinclusion protected (a.k.a. "idempotent") header files from being hidden.
1280 (This could happen when an idempotent header file is visited again,
1281 when its guard symbol is already defined.) Defaults to `t'.
1284 *** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
1285 name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be ignored when
1286 looking for macro definitions. By default, no symbols are ignored.
1291 *** New custom variable `tex-print-file-extension' to help users who
1292 use PDF instead of DVI.
1295 *** TeX mode now supports Prettify Symbols mode. When enabling
1296 `prettify-symbols-mode' in a tex-mode buffer, \alpha ... \omega, and
1297 many other math macros are displayed using unicode characters.
1300 ** New `big-indent' style in `whitespace-mode' highlights deep indentation.
1301 By default, 32 consecutive spaces or four consecutive TABs are
1302 considered to be too deep, but the new variable
1303 `whitespace-big-indent-regexp' can be customized to change that.
1306 ** New options in `tildify-mode'.
1307 New options `tildify-space-string', `tildify-pattern', and
1308 `tildify-foreach-region-function' variables make
1309 `tildify-string-alist', `tildify-pattern-alist', and
1310 `tildify-ignored-environments-alist' variables (as well as a few
1311 helper functions) obsolete.
1314 ** New package Xref replaces Etags's front-end and UI
1316 The new package Xref provides a generic framework and new commands to
1317 find and move to definitions of functions, macros, data structures
1318 etc., as well as go back to the location where you were before moving
1319 to a definition. It supersedes and obsoletes many Etags commands,
1320 while still using the etags.el code that reads the TAGS tables as one
1323 The command `xref-find-definitions' replaces `find-tag' and provides
1324 an interface to pick one definition among several.
1325 `tags-loop-continue' is now unbound. `xref-pop-marker-stack' replaces
1326 `pop-tag-mark', but has a keybinding (`M-,') different from the one
1327 `pop-tag-mark' used.
1329 `xref-find-definitions-other-window' replaces `find-tag-other-window'.
1330 `xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
1331 `xref-find-apropos' replaces `find-tag-regexp'.
1333 As a result of this, the following commands are now obsolete:
1334 `find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
1337 `tags-loop-continue' is not obsolete because it's still useful in
1338 `tags-search' and `tags-query-replace', for which there are no direct
1342 *** Variants of `tags-search' and `tags-query-replace' in Dired were also
1343 replaced by xref-style commands, see the "Dired" section below.
1348 `find-tag-marker-ring-length' is now an obsolete alias for
1349 `xref-marker-ring-length'. `find-tag-marker-ring' is now an obsolete
1350 alias for a private variable. `xref-push-marker-stack' and
1351 `xref-pop-marker-stack' should be used instead to manipulate the stack
1352 of searches for definitions.
1355 *** `xref-find-definitions' and `describe-function' now display
1356 information about mode local overrides (defined by cedet/mode-local.el
1357 `define-overloadable-function' `define-mode-local-overrides').
1359 The framework's Lisp API is still experimental and can change in major,
1360 backward-incompatible ways.
1363 ** New package Project
1365 The new package Project provides generic infrastructure for dealing
1366 with projects. The main commands included in it are
1367 `project-find-file' and `project-find-regexp'.
1369 The Lisp API of this package is still experimental.
1372 EUDC's LDAP backend has been improved.
1375 *** EUDC supports LDAP-over-SSL URLs (ldaps://).
1378 *** EUDC passes LDAP passwords through a pipe to the ldapsearch
1379 subprocess instead of on the command line.
1382 *** EUDC handles LDAP wildcards automatically so the user shouldn't
1383 need to configure this manually anymore.
1386 *** The LDAP configuration section of EUDC's manual has been
1389 There have also been customization changes.
1392 *** New custom variable `eudc-server-hotlist' to allow specifying
1393 multiple EUDC servers in init file.
1396 *** Custom variable `eudc-inline-query-format' defaults to completing
1397 on email and firstname instead of surname.
1400 *** Custom variable `eudc-expansion-overwrites-query' defaults to nil
1401 to avoid interfering with the kill ring.
1404 *** Custom variable `eudc-inline-expansion-format' defaults to
1405 "Firstname Surname <mail-address>".
1408 *** Custom variable `eudc-options-file' defaults to
1409 "~/.emacs.d/eudc-options".
1412 *** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
1413 allow overriding the regular expression that recognizes the ldapsearch
1414 command line's password prompt.
1417 EUDC's BBDB backend now supports BBDB 3.
1420 EUDC's PH backend (eudcb-ph.el) is obsolete.
1425 *** The new built-in command `clear' can scroll window contents out of sight.
1426 If provided with an optional non-nil argument, the scrollback contents will be cleared.
1429 *** New buffer syntax '#<buffer-name>', which is equivalent to
1430 '#<buffer buffer-name>'. This shorthand makes interacting with
1431 buffers from eshell more convenient. Custom variable
1432 `eshell-buffer-shorthand', which has been broken for a while, has been
1436 *** By default, eshell "visual" program buffers (created by
1437 `eshell-visual-commands' and similar custom vars) are no longer killed
1438 when their processes die. This fixes issues with short-lived commands
1439 and makes visual programs more useful in general. For example, if
1440 "git log" is a visual command, it will always show the visual command
1441 buffer, even if the "git log" process dies. For the old behavior,
1442 make the new option `eshell-destroy-buffer-when-process-dies' non-nil.
1447 *** Support for the Google Chrome web browser.
1450 *** Support for the Conkeror web browser.
1453 *** Support for several ancient browsers is now officially obsolete.
1456 ** tar-mode: new `tar-new-entry' command, allowing for new members to
1457 be added to the archive.
1462 *** Dired buffers are also auto-reverted via file notifications, if
1463 Emacs is compiled with file notification support.
1466 *** `auto-revert-use-notify' is set to nil in `global-auto-revert-mode'.
1467 See <http://debbugs.gnu.org/22814>.
1469 ** File Notifications
1472 *** The kqueue library is integrated for *BSD and Mac OS X machines.
1475 *** The new event `stopped' signals, that a file notification watch is
1476 not active any longer.
1479 *** The new function `file-notify-valid-p' checks, whether a file
1480 notification descriptor still corresponds to an activate watch.
1485 *** The command `dired-do-compress' bound to `Z' now can compress
1486 directories and decompress zip files.
1489 *** New command `dired-do-compress-to' bound to `c' can be used to
1490 compress many marked files into a single named archive. The
1491 compression command is determined from the new
1492 `dired-compress-files-alist' variable.
1495 *** In wdired, when editing files to contain slash characters,
1496 the resulting directories are automatically created. Whether
1497 to do this or not is controlled by the
1498 `wdired-create-parent-directories' variable.
1501 *** `W' is now bound to `browse-url-of-dired-file', and is useful for
1502 viewing HTML files and the like.
1504 *** New user interface for the `A' and `Q' commands.
1505 These keys, now bound to `dired-do-find-regexp' and
1506 `dired-do-find-regexp-and-replace', work similarly to `xref-find-apropos'
1507 and `xref-query-replace-in-results': they present the matches
1508 in the `*xref*' buffer and let you move through the matches. No need
1509 to use `tags-loop-continue' to resume the search or replace loop. The
1510 previous commands, `dired-do-search' and
1511 `dired-do-query-replace-regexp', are still available, but not bound to
1512 keys; rebind `A' and `Q' to invoke them if you want the old behavior
1513 back. We intend to obsolete the old commands in a future release.
1515 ** Tabulated List Mode
1518 *** It is now safe for a mode that derives `tabulated-list-mode' to not
1519 call `tabulated-list-init-header', in which case it will have no
1523 *** `tabulated-list-print' takes a second optional argument, update,
1524 which specifies an alternative printing method which is faster when
1525 few or no entries have changed.
1527 ** Obsolete packages
1533 *** landmark.el (moved to elpa.gnu.org)
1536 * New Modes and Packages in Emacs 25.1
1539 ** pinentry.el allows GnuPG passphrase to be prompted through the
1540 minibuffer instead of a graphical dialog, depending on whether the gpg
1541 command is called from Emacs (i.e., INSIDE_EMACS environment variable
1542 is set). This feature requires newer versions of GnuPG (2.1.5 or
1543 later) and Pinentry (0.9.5 or later). To use this feature, add
1544 "allow-emacs-pinentry" to "~/.gnupg/gpg-agent.conf" and reload the
1545 configuration with "gpgconf --reload gpg-agent".
1548 ** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
1549 The main entry points are `cl-defgeneric' and `cl-defmethod'. See the
1550 node "Generic Functions" in the Emacs Lisp manual for more details.
1553 ** scss-mode (a minor variant of css-mode) is a major mode for editing
1554 SCSS (Sassy CSS) files.
1557 ** let-alist is a new macro (and a package) that allows one to easily
1558 let-bind the values stored in an alist.
1561 ** `tildify-mode' allows automatic insertion of hard spaces as one
1562 types the text. Breaking line after a single-character words is
1563 forbidden by Czech and Polish typography (and may be discouraged in
1564 other languages), so `auto-tildify-mode' makes it easier to create
1565 a typographically-correct documents.
1568 ** The `seq' library adds sequence manipulation functions and macros
1569 that complement basic functions provided by subr.el. All functions
1570 are prefixed with `seq-' and work on lists, strings and vectors.
1571 `pcase' accepts a new Upattern `seq'.
1574 ** The `map' library provides map-manipulation functions that work on
1575 alists, hash-table and arrays. All functions are prefixed with
1576 `map-'. `pcase' accepts a new UPattern `map'.
1579 ** The `thunk' library provides functions and macros to control the
1580 evaluation of forms.
1583 ** js-jsx-mode (a minor variant of js-mode) provides indentation
1584 support for JSX, an XML-like syntax extension to ECMAScript.
1587 * Incompatible Lisp Changes in Emacs 25.1
1590 ** `setq' and `setf' must now be called with an even number of
1591 arguments. The earlier behavior of silently supplying a nil to the
1592 last variable when there was an odd number of arguments has been
1596 ** `syntax-begin-function' is declared obsolete.
1597 Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
1598 slot in font-lock-defaults.
1601 ** `package-initialize' now sets `package-enable-at-startup' to nil if
1602 called during startup. Users who call this function in their init
1603 file and still expect it to be run after startup should set
1604 `package-enable-at-startup' to t after the call to
1605 `package-initialize'.
1608 ** `:global' minor mode use `setq-default' rather than `setq'.
1609 This means that you can't use `make-local-variable' and expect them to
1610 "magically" become buffer-local.
1613 ** `track-mouse' no longer freezes the shape of the mouse pointer.
1614 The `track-mouse' form no longer refrains from changing the shape of
1615 the mouse pointer for the entire time the body of that form is
1616 executed. Lisp programs that use `track-mouse' for dragging across
1617 large portions of the Emacs display, and want to avoid changes in the
1618 pointer shape during dragging, should bind the variable `track-mouse'
1619 to the special value `dragging' in the body of the form.
1622 ** The optional `predicate' argument of `lisp-complete-symbol' no longer
1623 has any effect. (This change was made in Emacs 24.4 but was not
1624 advertised at the time.)
1627 ** `indirect-function' does not signal `void-function' any more.
1628 This is mostly a bug-fix, since this change was missed back in 24.4 when
1629 symbol-function was changed not to signal `void-function' any more.
1632 *** As a consequence, the second arg of `indirect-function' is now obsolete.
1635 ** Comint, term, and compile do not set the EMACS env var any more.
1636 Use the INSIDE_EMACS environment variable instead.
1638 ** `C-up', `C-down', `C-left' and `C-right' are now defined in term
1639 mode to send the same escape sequences that xterm does. This makes
1640 things like forward-word in readline work.
1643 ** hideshow mode got four key bindings that are analogous to outline
1644 mode bindings: `C-c @ C-a', `C-c @ C-t', `C-c @ C-d', and `C-c @ C-e.'
1647 ** `save-excursion' does not save&restore the mark any more.
1648 Use `save-mark-and-excursion' if you want the old behavior.
1651 ** `read-buffer' and `read-buffer-function' can now be called with a 4th
1652 argument (`predicate').
1655 ** `completion-table-dynamic' by default stays in the minibuffer.
1656 The minibuffer will be the current buffer when the function is called.
1657 If you want the old behavior of calling the function in the buffer
1658 from which the minibuffer was entered, use the new argument
1659 `switch-buffer' to `completion-table-dynamic'.
1662 ** window-configurations no longer record the buffers' marks.
1665 ** inhibit-modification-hooks now also inhibits lock-file checks, as well as
1666 active region handling.
1669 ** deactivate-mark is now buffer-local.
1672 ** `cl-the' now asserts that its argument is of the given type.
1675 ** `process-running-child-p' may now return a numeric process
1676 group ID instead of `t'.
1679 ** Mouse click events on mode line or header line no longer include
1680 any reference to a buffer position. The 6th member of the mouse
1681 position list returned for such events is now nil.
1684 ** Menu items in keymaps do not support the "key shortcut cache" any more.
1685 These slots used to hold key-shortcut data, but have been obsolete since
1689 ** Emacs no longer downcases the first letter of a system diagnostic
1690 when signaling a file error. For example, it now reports "Permission
1691 denied" instead of "permission denied". The old behavior was problematic
1692 in languages like German where downcasing rules depend on grammar.
1695 ** New variable ‘text-quoting-style’ to control how Emacs translates quotes.
1696 Set it to ‘curve’ for curved single quotes ‘like this’, to ‘straight’
1697 for straight apostrophes 'like this', and to ‘grave’ for grave accent
1698 and apostrophe `like this'. The default value nil acts like ‘curve’
1699 if curved single quotes are displayable, and like ‘grave’ otherwise.
1700 The new variable affects display of diagnostics and help, but not of info.
1703 ** substitute-command-keys now replaces quotes.
1704 That is, it converts documentation strings’ quoting style as per the
1705 value of ‘text-quoting-style’. Doc strings in source code can use
1706 either curved single quotes or grave accents and apostrophes. As
1707 before, characters preceded by \= are output as-is.
1710 ** Message-issuing functions ‘error’, ‘message’, etc. now convert quotes.
1711 They use the new ‘format-message’ function instead of plain ‘format’,
1712 so that they now follow user preference as per ‘text-quoting-style’
1713 when processing curved single quotes, grave accents, and apostrophes
1714 in their format argument.
1717 ** The character classes [:alpha:] and [:alnum:] in regular expressions
1718 now match multibyte characters using Unicode character properties.
1719 If you want the old behavior where they matched any character with
1720 word syntax, use `\sw' instead.
1723 ** The character classes [:graph:] and [:print:] in regular expressions
1724 no longer match every multibyte character. Instead, Emacs now
1725 consults the Unicode character properties to determine which
1726 characters are graphic or printable. In particular, surrogates and
1727 unassigned codepoints are now rejected. If you want the old behavior,
1728 use [:multibyte:] instead.
1731 ** The `diff' command uses the unified format now. To restore the old
1732 behavior, set `diff-switches' to `-c'.
1735 ** `grep-template' and `grep-find-template' values don't include the
1736 --color argument anymore. It's added at the <C> place holder position
1737 dynamically. Any third-party code that changes these templates should
1738 be updated accordingly.
1740 ** The grep/rgrep/lgrep functions will now ask about saving files
1741 before running. This is controlled by the `grep-save-buffers'
1745 ** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
1746 The new behavior is compatible with Common Lisp and with XEmacs.
1747 This change does not affect Lisp code intended to be portable to
1748 Emacs 24.2 and earlier, which did not support unary ‘/’.
1751 ** The `default-directory' value doesn't have to end slash. To make
1752 that happen, `unhandled-file-name-directory' now defaults to calling
1753 `file-name-as-directory'.
1756 * Lisp Changes in Emacs 25.1
1760 *** New UPatterns `quote', `app'.
1762 *** New UPatterns can be defined with `pcase-defmacro'.
1764 *** New vector QPattern.
1767 ** syntax-propertize is now automatically called on-demand during forward
1768 parsing functions like `forward-sexp'.
1771 ** New hooks `prefix-command-echo-keystrokes-functions' and
1772 `prefix-command-preserve-state-hook' allow the definition of prefix
1773 commands other than the predefined `C-u'.
1776 ** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
1777 These allow conversion between buffer positions and the corresponding
1778 file byte offsets, given the file's encoding.
1781 ** The default value of `load-read-function' is now `read'.
1782 Previously, the default value of `nil' implied using `read'.
1785 ** New hook `pre-redisplay-functions'.
1786 It is a bit easier to use than `pre-redisplay-function'.
1789 ** The second arg of `looking-back' should always be provided explicitly.
1790 Previously, it was an optional argument, now it's mandatory.
1793 ** Text properties `intangible', `point-entered', and `point-left' are obsolete.
1794 Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
1795 implemented by the new `cursor-intangible-mode' and
1796 `cursor-sensor-mode' minor modes.
1799 ** `inhibit-point-motion-hooks' now defaults to `t' and is obsolete.
1800 Use the new minor modes `cursor-intangible-mode' and
1801 `cursor-sensor-mode' instead.
1804 ** New process type `pipe', which can be used in combination with the
1805 `:stderr' keyword of make-process to handle standard error output
1809 ** New function `make-process' provides an alternative interface to
1810 `start-process'. It allows programs to set process parameters such as
1811 process filter, sentinel, etc., through keyword arguments (similar to
1812 `make-network-process').
1815 ** A new function `directory-files-recursively' returns all matching
1816 files (recursively) under a directory.
1819 ** New variable `inhibit-message', when bound to non-nil, inhibits
1820 `message' and related functions from displaying messages in the echo
1821 area. The output is still logged to the *Messages* buffer.
1824 ** A new text property `inhibit-read-only' can be used in read-only
1825 buffers to allow certain parts of the text to be writable.
1828 ** A new variable `comment-end-can-be-escaped' is useful in languages
1829 such as C and C++ where line comments with escaped newlines are
1830 continued to the next line.
1833 ** New macro `define-advice'.
1836 ** Emacs Lisp now supports generators.
1837 See the "Generators" section of the ELisp manual for the details.
1840 ** New finalizer facility for running code when objects become unreachable.
1841 See the "Finalizer Type" subsection in the ELisp manual for the
1845 ** lexical closures can use (:documentation FORM) to build their docstring.
1846 It should be placed right where the docstring would be, and FORM is then
1847 evaluated (and should return a string) when the closure is built.
1850 ** The new command `fortune-message' has been added, which displays
1851 fortunes in the echo area.
1854 ** define-inline provides a new way to define inlinable functions.
1857 ** New function `macroexpand-1' to perform a single step of macro expansion.
1860 ** Some "x-*" functions were obsoleted and/or renamed:
1861 *** x-select-text is renamed gui-select-text.
1862 *** x-selection-value is renamed gui-selection-value.
1863 *** x-get-selection is renamed gui-get-selection.
1864 *** x-get-clipboard and x-clipboard-yank are marked obsolete.
1865 *** x-get-selection-value is renamed to gui-get-primary-selection.
1866 *** x-set-selection is renamed to gui-set-selection
1869 ** New function `string-greaterp', which return the opposite result of
1873 ** The new functions `string-collate-lessp' and `string-collate-equalp'
1874 preserve the collation order as defined by the system's locale(1)
1875 environment. For the time being this is implemented for modern POSIX
1876 systems and for MS-Windows, for other systems they fall back to their
1877 counterparts `string-lessp' and `string-equal'.
1880 ** The new function `string-version-lessp' compares strings by
1881 interpreting consecutive runs of numerical characters as numbers, and
1882 compares their numerical values. According to this predicate,
1883 "foo2.png" is smaller than "foo12.png".
1886 *** The ls-lisp package uses `string-collate-lessp' to sort file names.
1887 The effect is that, on systems that use ls-lisp for Dired, the default
1888 sort order of the files in Dired is now different from what it was in
1889 previous versions of Emacs. In particular, the file names are sorted
1890 disregarding punctuation, accents, and diacritics, and letter case is
1891 ignored. For example, files whose name begin with a period will no
1892 longer appear near the beginning of the directory listing. If you
1893 want the old, locale-independent sorting, customize the new option
1894 `ls-lisp-use-string-collate' to the nil value.
1897 *** The MS-Windows specific variable `w32-collate-ignore-punctuation',
1898 if set to a non-nil value, causes the above 2 functions to ignore
1899 symbol and punctuation characters when collating strings. This
1900 emulates the behavior of modern Posix platforms when the locale's
1901 codeset is "UTF-8" (as in "en_US.UTF-8"). This is needed because
1902 MS-Windows doesn't support UTF-8 as codeset in its locales.
1905 ** New function `alist-get', which is also a valid place (aka lvalue).
1908 ** New function `funcall-interactively', which works like `funcall'
1909 but makes `called-interactively-p' treat the function as (you guessed it)
1910 called interactively.
1913 ** New function `function-put' to use instead of `put' for function properties.
1916 ** The new function `bidi-find-overridden-directionality' allows you to
1917 find characters whose directionality was, perhaps maliciously,
1918 overridden by directional override control characters. Lisp programs
1919 can use this to detect potential phishing of URLs and other links that
1920 exploits bidirectional display reordering.
1923 ** The new function `buffer-substring-with-bidi-context' allows you to
1924 copy a portion of a buffer into a different location while preserving
1925 the visual appearance both of the copied text and the text at
1926 destination, even when the copied text includes mixed bidirectional
1927 text and directional control characters.
1930 ** New properties that can be specified with `declare':
1931 *** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
1932 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
1933 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
1937 ** New macro `with-file-modes', for evaluating expressions with default file
1938 permissions set to temporary values (e.g., for creating private files).
1941 ** You can access the slots of structures using `cl-struct-slot-value'.
1944 ** Function `sort' can deal with vectors.
1947 ** Function `system-name' now returns an updated value if the current
1948 system's name has changed or if the Emacs process has changed systems,
1949 and to avoid long waits it no longer consults DNS to canonicalize the
1950 name. The variable `system-name' is now obsolete.
1953 ** Function `write-region' no longer outputs "Wrote FILE" in batch mode.
1956 ** If `pwd' is called with a prefix argument, insert the current default
1960 ** New functions return extended information about fonts and faces.
1963 *** The function `font-info' now returns more details about a font.
1964 In particular, it now returns the average width of the font's
1965 characters, which can be used for geometry-related calculations.
1968 *** A new function `default-font-width' returns the average width of a
1969 character in the current buffer's default font. If the default face
1970 is remapped (see `face-remapping-alist'), the value for the remapped
1971 face is returned. This function complements the existing function
1972 `default-font-height'.
1975 *** New functions `window-font-height' and `window-font-width' return
1976 the height and average width of characters in a specified face and
1977 window. If FACE is remapped (see `face-remapping-alist'), the
1978 function returns the information for the remapped face.
1981 *** A new function `window-max-chars-per-line' returns the maximal
1982 number of characters that can be displayed on one line. If a face
1983 and/or window are provided, these values are used for the
1984 calculation. This function is different from `window-body-width' in
1985 that it accounts for (i) continuation glyphs, (ii) the size of the
1986 font, and (iii) the specified window.
1989 ** New utilities in subr-x.el:
1990 *** New macros `if-let' and `when-let' allow defining bindings and to
1991 execute code depending whether all values are true.
1992 *** New macros `thread-first' and `thread-last' allow threading a form
1993 as the first or last argument of subsequent forms.
1996 ** Documentation strings now support quoting with curved single quotes
1997 ‘like-this’ in addition to the old style with grave accent and
1998 apostrophe `like-this'. The new style looks better on today's displays.
1999 In the new Electric Quote mode, you can enter curved single quotes
2000 into documentation by typing ` and '. Outside Electric Quote mode,
2001 you can enter them by typing ‘C-x 8 [’ and ‘C-x 8 ]’, or (if your Alt
2002 key works) by typing ‘A-[’ and ‘A-]’. As described above under
2003 ‘text-quoting-style’, the user can specify how to display doc string
2007 ** New function ‘format-message’ is like ‘format’ and also converts
2008 curved single quotes, grave accents and apostrophes as per
2009 ‘text-quoting-style’.
2012 ** show-help-function's arg is converted via substitute-command-keys
2013 before being passed to the function. Help strings, help-echo
2014 properties, etc. can therefore contain command key escapes and
2018 ** Time-related changes:
2020 *** Time conversion functions now accept an optional ZONE argument
2021 that specifies the time zone rules for conversion. ZONE is omitted or
2022 nil for Emacs local time, t for Universal Time, ‘wall’ for system wall
2023 clock time, or a string as in ‘set-time-zone-rule’ for a time zone
2024 rule. The affected functions are ‘current-time-string’,
2025 ‘current-time-zone’, ‘decode-time’, and ‘format-time-string’. The
2026 function ‘encode-time’, which already accepted a simple time zone rule
2027 argument, has been extended to accept all the new forms.
2029 *** Time-related functions now consistently accept numbers
2030 (representing seconds since the epoch) and nil (representing the
2031 current time) as well as the usual list-of-integer representation.
2032 Affected functions include `current-time-string', `current-time-zone',
2033 `decode-time', `float-time', `format-time-string', `seconds-to-time',
2034 `time-add', `time-less-p', `time-subtract', `time-to-day-in-year',
2035 `time-to-days', and `time-to-seconds'.
2037 *** The `encode-time-value' and `with-decoded-time-value' macros have
2040 *** `calendar-next-time-zone-transition', `time-add', and
2041 `time-subtract' no longer return time values in the obsolete and
2042 undocumented integer-pair format. Instead, they return a list of two
2046 ** New function `set-binary-mode' allows switching a standard stream
2047 of the Emacs process to binary I/O mode.
2050 ** The new function `directory-name-p' can be used to check whether a file
2051 name (as returned from, for instance, `file-name-all-completions') is
2052 a directory file name. It returns non-nil if the last character in
2053 the name is a directory separator character (forward slash on GNU and
2054 Unix systems, forward- or backslash on MS-Windows and MS-DOS).
2057 ** ASCII approximations to curved quotes are put in standard-display-table
2058 if the terminal cannot display curved quotes.
2061 ** Standard output and error streams now transliterate characters via
2062 standard-display-table, and encode output using locale-coding-system.
2063 To force a specific encoding, bind `coding-system-for-write' to the
2064 coding-system of your choice when invoking functions like `prin1' and
2068 ** New var `truncate-string-ellipsis' to choose how to indicate truncation.
2071 ** New possible value for `system-type': `nacl'.
2072 This is used by Google's Native Client (NaCl).
2075 ** `read-color' will now display the color names using the color itself
2076 as the background color.
2079 ** There is now a new variable `flyspell-sort-corrections-function'
2080 that allows changing the way corrections are sorted.
2082 ** Miscellaneous name change
2085 For consistency with the usual Emacs spelling, the Lisp variable
2086 `hfy-optimisations' has been renamed to `hfy-optimizations'.
2087 The old name should still work, as an obsolescent alias.
2089 ** Changes in Frame- and Window- Handling
2092 *** Emacs can now draw horizontal scroll bars on some platforms that
2093 provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
2094 Horizontal scroll bars are turned off by default.
2096 **** New function `horizontal-scroll-bars-available-p' telling whether
2097 horizontal scroll bars are available on the underlying system.
2099 **** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
2100 bars on all existing and future frames.
2102 **** New function `toggle-horizontal-scroll-bar' to toggle horizontal
2103 scroll bars on the selected frame.
2105 **** New frame parameters `horizontal-scroll-bars' and
2106 `scroll-bar-height' to set horizontal scroll bars and their height
2107 for individual frames and in `default-frame-alist'.
2109 **** New functions `frame-scroll-bar-height' and
2110 `window-scroll-bar-height' return the height of horizontal scroll
2111 bars on a specific frame or window.
2113 **** `set-window-scroll-bars' now accepts five parameters where the last
2114 two specify height and type of the window's horizontal scroll bar.
2116 **** `window-scroll-bars' now returns type and sizes of horizontal scroll
2119 **** New buffer-local variables `horizontal-scroll-bar' and
2120 `scroll-bar-height'.
2123 *** New functions `frame-geometry' and `frame-edges' give access to a
2127 *** New functions `mouse-absolute-pixel-position' and
2128 `set-mouse-absolute-pixel-position' get/set screen coordinates of the
2132 *** The function `window-edges' now accepts three additional arguments to
2133 retrieve body, absolute and pixel edges of the window.
2136 *** The functions `window-inside-edges', `window-inside-pixel-edges' and
2137 `window-inside-absolute-pixel-edges' have been renamed to respectively
2138 `window-body-edges', `window-body-pixel-edges' and
2139 `window-absolute-body-pixel-edges'. The old names are kept as aliases.
2142 *** New function `window-absolute-pixel-position' to get the screen
2143 coordinates of a visible buffer position.
2146 *** The height of a frame's menu and tool bar are no longer counted in the
2147 frame's text height. This means that the text height stands only for
2148 the height of the frame's root window plus that of the echo area (if
2149 present). This was already the behavior for frames with external tool
2150 and menu bars (like in the Gtk builds) but has now been extended to all
2154 *** Frames now do not necessarily preserve the number of columns or lines
2155 they display when setting default font, menu bar, fringe width, or
2156 scroll bars. In particular, maximized and fullscreen frames are
2157 conceptually never resized if such settings change. For fullheight and
2158 fullwidth frames, the behavior may depend on the toolkit used.
2159 **** New option `frame-inhibit-implied-resize' if non-nil, means that
2160 setting default font, menu bar, fringe width, or scroll bars of a
2161 specific frame does not resize that frame in order to preserve the
2162 number of columns or lines it displays.
2165 *** New function `window-preserve-size' allows you to preserve the size of
2166 a window without "fixing" it. It's supported by `fit-window-to-buffer',
2167 `temp-buffer-resize-mode' and `display-buffer'.
2170 *** New `display-buffer' action function `display-buffer-use-some-frame'.
2171 This displays the buffer in an existing frame other than the current
2172 frame, and allows the caller to specify a frame predicate to exclude
2176 *** New minor mode `window-divider-mode' and options
2177 `window-divider-default-places', `window-divider-default-bottom-width'
2178 and `window-divider-default-right-width'.
2181 ** Tearoff menus and detachable toolbars for Gtk+ have been removed.
2182 Those features have been deprecated in Gtk+ for a long time.
2187 *** etags no longer qualifies class members by default.
2189 By default, `etags' will not qualify class members for C-like
2190 object-oriented languages with their class names and namespaces, and
2191 will remove qualifications used explicitly in the code from the tag
2192 names it puts in TAGS files. This is so the etags.el back-end for
2193 `xref-find-definitions' is more accurate and produces less false
2196 Use --class-qualify (-Q) if you want the old default behavior of
2197 qualifying class members in C++, Java, and Objective C. Note that
2198 using -Q might make some class members become "unknown" to `M-.'
2199 (`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
2200 qualified names by hand.
2203 *** New language Ruby
2205 Names of modules, classes, methods, functions, and constants are
2206 tagged. Overloaded operators are also tagged.
2210 Names of packages, functions, and types are tagged.
2213 *** Improved support for Lua
2215 Etags now tags functions even if the "function" keyword follows some
2216 whitespace at line beginning.
2219 * Changes in Emacs 25.1 on Non-Free Operating Systems
2222 ** MS-Windows specific Emacs build scripts are no longer in the distribution
2223 This includes the makefile.w32-in files in various subdirectories, and
2224 the support files. The file nt/configure.bat now just tells the user
2225 to use the procedure described in nt/INSTALL, by running the Posix
2226 `configure' script in the top-level directory.
2229 ** Building Emacs for MS-Windows requires at least Windows XP
2230 or Windows Server 2003. The built binaries still run on all versions
2231 of Windows starting with Windows 9X.
2234 ** Emacs running on MS-Windows now supports the daemon mode.
2237 ** The byte counts in etags-generated TAGS files are now the same on
2238 MS-Windows as they are on other platforms.
2241 ** On OS X, configure creates a Cocoa ("Nextstep") build by default.
2242 Pass '--without-ns' to configure to create an X11 build, the old default.
2245 ** OS X 10.5 or older is no longer supported.
2248 ** OS X on PowerPC is no longer supported.
2251 ** New variable `ns-use-fullscreen-animation' controls animation for
2252 non-native NS fullscreen. The default is nil. Set to t to enable
2253 animation when entering and leaving fullscreen. For native OSX fullscreen
2257 ** The new function 'w32-application-type' returns the type of an
2258 MS-Windows application given the name of its executable program file.
2260 ** New variable `w32-pipe-buffer-size'.
2261 It can be used to tune the size of the buffer of pipes created for
2262 communicating with subprocesses, when the program run by a subprocess
2263 exhibits unusual buffering behavior. Default is zero, which lets the
2264 OS use its default size.
2267 ----------------------------------------------------------------------
2268 This file is part of GNU Emacs.
2270 GNU Emacs is free software: you can redistribute it and/or modify
2271 it under the terms of the GNU General Public License as published by
2272 the Free Software Foundation, either version 3 of the License, or
2273 (at your option) any later version.
2275 GNU Emacs is distributed in the hope that it will be useful,
2276 but WITHOUT ANY WARRANTY; without even the implied warranty of
2277 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2278 GNU General Public License for more details.
2280 You should have received a copy of the GNU General Public License
2281 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2287 paragraph-separate: "[
\f]*$"