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 ** The locale language name `ca' is now mapped to the language
58 environment `Catalan', which has been added.
61 ** `align-regexp' has a separate history for its interactive argument
62 `align-regexp' no longer shares its history with all other
63 history-less functions that use `read-string'
66 ** The networking code has been reworked so that it's more
67 asynchronous than it was (when specifying :nowait t in
68 `make-network-process'). How asynchronous it is varies based on the
69 capabilities of the system, but on a typical GNU/Linux system the DNS
70 resolution, the connection, and (for TLS streams) the TLS negotiation
71 are all done without blocking the main Emacs thread. To get
72 asynchronous TLS, the TLS boot parameters have to be passed in (see
73 the manual for details).
75 Certain process oriented functions (like `process-datagram-address')
76 will block until socket setup has been performed. The recommended way
77 to deal with asynchronous sockets is to avoid interacting with them
78 until they have changed status to "run". This is most easily done
79 from a process sentinel.
81 ** ‘make-network-process’ and ‘open-network-stream’ sometimes allowed
82 :service to be an integer string (e.g., :service "993") and sometimes
83 required an integer (e.g., :service 993). This difference has been
84 eliminated, and integer strings work everywhere.
86 ** It is possible to disable attempted recovery on fatal signals
88 Two new variables allow to disable attempts to recover from stack
89 overflow and to avoid automatic auto-save when Emacs is delivered a
90 fatal signal. `attempt-stack-overflow-recovery', if set to `nil',
91 will disable attempts to recover from C stack overflows; Emacs will
92 then crash as with any other fatal signal.
93 `attempt-orderly-shutdown-on-fatal-signal', if set to `nil', will
94 disable attempts to auto-save the session and shut down in an orderly
95 fashion when Emacs receives a fatal signal; instead, Emacs will
96 terminate immediately. Both variables are non-`nil' by default.
97 These variables are for users who would like to avoid the small
98 probability of data corruption due to techniques Emacs uses to recover
102 * Editing Changes in Emacs 25.2
105 * Changes in Specialized Modes and Packages in Emacs 25.2
110 *** A new `s' command for switching to another eww buffer via the minibuffer.
113 *** The `o' command (`shr-save-contents') has moved to `O' to avoid collision
114 with the `o' command from `image-map'.
117 ** The commands that add ChangeLog entries now prefer a VCS root directory
118 for the ChangeLog file, if none already exists. Customize
119 `change-log-directory-files' to nil for the old behavior.
122 ** Support for non-string values of `time-stamp-format' has been removed.
127 *** New connection method "sg", which allows to edit files under
131 *** New connection method "doas" for OpenBSD hosts.
134 ** `auto-revert-use-notify' is set back to t in `global-auto-revert-mode'.
137 * New Modes and Packages in Emacs 25.2
140 * Incompatible Lisp Changes in Emacs 25.2
143 ** Resizing a frame no longer runs `window-configuration-change-hook'.
144 Put your function on `window-size-change-functions' instead.
147 * Lisp Changes in Emacs 25.2
149 ** New var syntax-ppss-table to control the syntax-table used in syntax-ppss
151 ** Autoload files can be generated without timestamps,
152 by setting `autoload-timestamps' to nil.
153 FIXME As an experiment, nil is the current default.
154 If no insurmountable problems before next release, it can stay that way.
156 ** `ert-with-function-mocked' of 'ert-x package allows mocking of functions
160 ** `gnutls-boot' now takes a parameter :complete-negotiation that says
161 that negotiation should complete even on non-blocking sockets.
164 ** New functions `window-pixel-width-before-size-change' and
165 `window-pixel-height-before-size-change' allow to detect which window
166 changed size when `window-size-change-functions' are run.
169 ** New function `display-buffer-reuse-mode-window' is an action function
170 suitable for use in `display-buffer-alist'. For example, to avoid creating
171 a new window when opening man pages when there's already one, use
172 (add-to-list 'display-buffer-alist
173 '("\\`\\*Man .*\\*\\'" .
174 (display-buffer-reuse-mode-window
175 (inhibit-same-window . nil)
179 * Changes in Emacs 25.2 on Non-Free Operating Systems
181 ** Intercepting hotkeys on Windows 7 and later now works better.
182 The new keyboard hooking code properly grabs system hotkeys such as
183 Win-* and Alt-TAB, in a way that Emacs can get at them before the
184 system. This makes the `w32-register-hot-key' functionality work
185 again on all versions of MS-Windows starting with Windows 7. On
186 Windows NT and later you can now register any hotkey combination. (On
187 Windows 9X, the previous limitations, spelled out in the Emacs manual,
191 * Installation Changes in Emacs 25.1
194 ** Building Emacs now requires C99 or later.
197 ** Building Emacs now requires GNU make, version 3.81 or later.
200 ** New configure option --with-cairo.
201 This builds Emacs with Cairo drawing. As a side effect, it provides
202 support for built-in printing, when Emacs was built with GTK+.
203 Cairo drawing is an experimental feature in Emacs, and subject to
204 change in future releases.
207 ** New configure option --with-modules.
208 This enables support for loading dynamic modules; see below.
211 ** By default, Emacs no longer works on IRIX. We expect that Emacs
212 users are not affected by this, as SGI stopped supporting IRIX in
213 December 2013. If you are affected, please send a bug report. You
214 should be able to work around the problem either by porting the Emacs
215 undumping code to GCC under IRIX, or by configuring --with-wide-int,
216 or by sticking with Emacs 24.4.
219 ** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
220 The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
221 since Emacs 24.4, and the other variants were undocumented and were
222 obstacles to maintenance and development. GC_MARK_STACK and its
223 related symbols have been removed from the C internals.
226 ** 'configure' now prefers gnustep-config when configuring GNUstep.
227 If gnustep-config is not available, the old heuristics are used.
230 ** 'configure' now prefers inotify to gfile for file notification,
231 unless gfile is explicitly requested via --with-file-notification='gfile'.
234 ** 'configure' detects the kqueue file notification library on *BSD
235 and Mac OS X machines.
238 ** The configure option '--with-pkg-config-prog' has been removed.
239 Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
242 ** The configure option '--with-mmdf' has been removed.
243 It was no longer useful, as it relied on libraries that are no longer
244 supported, and its presence led to confusion during configuration.
245 This affects only the 'movemail' utility; Emacs itself can still
246 process MMDF-format files as before.
249 ** The configure option '--enable-silent-rules' is now the default,
250 and silent rules are now quieter. To get the old behavior where
251 'make' chatters a lot, configure with '--disable-silent-rules' or
252 build with 'make V=1'.
255 ** The configure option '--with-gameuser' now allows you to specify a
256 group instead of a user if its argument is prefixed by ':' (a colon).
257 This will cause the game score files in ${localstatedir}/games/emacs
258 to be owned by that group, and the helper program for updating them to
259 be installed setgid. The option now defaults to the 'games' group.
262 ** The `grep-changelog' script (and its manual page) are no longer included.
263 It has no particular connection to Emacs and has not changed in years,
264 so if you want to use it, you can always take a copy from an older Emacs.
267 ** Emacs 25 comes with a new set of icons.
268 Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
269 The old Emacs logo icons are available as `emacs23.png' in the same location.
272 ** New make target `check-expensive' to run additional tests.
273 This includes all tests which run via "make check", plus additional
274 tests which take more time to perform.
277 * Startup Changes in Emacs 25.1
280 ** When Emacs is given a file as a command line argument and
281 `initial-buffer-choice' is non-nil, display both the file and
282 `initial-buffer-choice'. When Emacs is given more than one file and
283 `initial-buffer-choice' is non-nil, show `initial-buffer-choice'
284 and *Buffer List*. This makes Emacs convenient to use from the
285 command line when `initial-buffer-choice' is non-nil.
288 ** The value of ‘initial-scratch-message’ is now treated as a doc string
289 and can contain escape sequences for command keys, quotes, and the like.
292 * Changes in Emacs 25.1
295 ** Xwidgets: a new feature for embedding native widgets inside Emacs buffers.
296 If you have gtk3 and webkitgtk3 installed, and Emacs was built with
297 xwidget support, you can access the embedded webkit browser with `M-x
298 xwidget-webkit-browse-url'. This opens a new buffer with the embedded
299 browser. The buffer will have a new mode, `xwidget-webkit-mode'
300 (similar to `image-mode'), which supports the webkit widget.
303 *** New functions for xwidget-webkit mode `xwidget-webkit-insert-string',
304 `xwidget-webkit-adjust-size-dispatch', `xwidget-webkit-back',
305 `xwidget-webkit-browse-url', `xwidget-webkit-reload',
306 `xwidget-webkit-current-url', `xwidget-webkit-scroll-backward',
307 `xwidget-webkit-scroll-forward', `xwidget-webkit-scroll-down',
308 `xwidget-webkit-scroll-up'.
311 ** Emacs can now load shared/dynamic libraries (modules).
312 A dynamic Emacs module is a shared library that provides additional
313 functionality for use in Emacs Lisp programs, just like a package
314 written in Emacs Lisp would. The functions `load', `require',
315 `load-file', etc. were extended to load such modules, as they do with
316 Emacs Lisp packages. The new variable `module-file-suffix' holds the
317 system-dependent value of the file-name extension (`.so' on Posix
318 hosts) of the module files.
320 A module should export a C-callable function named
321 `emacs_module_init', which Emacs will call as part of the call to
322 `load' or `require' which loads the module. It should also export a
323 symbol named `plugin_is_GPL_compatible' to indicate that its code is
324 released under the GPL or compatible license; Emacs will refuse to
325 load modules that don't export such a symbol.
327 If a module needs to call Emacs functions, it should do so through the
328 API defined and documented in the header file `emacs-module.h'. Note
329 that any module that provides Lisp-callable functions will have to use
330 Emacs functions such as `fset' and `funcall', in order to register its
331 functions with the Emacs Lisp interpreter.
333 Modules can create `user-ptr' Lisp objects that embed pointers to C
334 struct's defined by the module. This is useful for keeping around
335 complex data structures created by a module, to be passed back to the
336 module's functions. User-ptr objects can also have associated
337 "finalizers" -- functions to be run when the object is GC'ed; this is
338 useful for freeing any resources allocated for the underlying data
339 structure, such as memory, open file descriptors, etc. A new
340 predicate `user-ptrp' returns non-nil if its argument is a `user-ptr'
343 Loadable modules in Emacs are an experimental feature, and subject to
344 change in future releases. For that reason, their support is disabled
345 by default, and must be enabled by using the `--with-modules' option
349 ** A second dir-local file (.dir-locals-2.el) is now accepted.
350 See the variable `dir-locals-file-2' for more information.
353 ** Network security (TLS/SSL certificate validity and the like) is
354 added via the new Network Security Manager (NSM) and controlled via
355 the `network-security-level' variable.
358 ** International domain names (IDNA) are now encoded via the new
359 puny.el library, so that one can visit web sites like
360 "http://méxico.icom.museum".
363 ** C-h l now also lists the commands that were run.
365 ** The new M-s M-w key binding uses eww to search the web for the
369 ** The new `timer-list' command lists all active timers in a buffer
370 where you can cancel them with the `c' command.
372 ** M-x suggests shorthands and ignores obsolete commands for completion.
373 ** x-select-enable-clipboard is renamed select-enable-clipboard.
374 x-select-enable-primary and renamed select-enable-primary.
375 Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
376 name it), with the proviso that on some systems (e.g. Windows)
377 select-enable-primary is ineffective since the system doesn't
378 have the equivalent of a primary selection.
381 ** New option `switch-to-buffer-in-dedicated-window' allows you to
382 customize how `switch-to-buffer' proceeds interactively when the
383 selected window is strongly dedicated to its buffer.
386 ** The option `even-window-heights' has been renamed to
387 `even-window-sizes' and now handles window widths as well.
390 ** New function `read-multiple-choice' use to prompt for
391 multiple-choice questions, with a handy way to display help texts.
394 ** terpri gets an optional arg ENSURE to conditionally output a newline.
397 ** `insert-register' now leaves point after the inserted text
398 when called interactively. A prefix argument toggles this behavior.
401 ** The new variable `term-file-aliases' replaces some files from lisp/term.
402 The function `tty-run-terminal-initialization' consults this variable
403 when deciding what terminal-specific initialization code to run.
406 ** New variable `system-configuration-features', listing some of the
407 main features that Emacs was compiled with. This is mainly intended
408 for use in Emacs bug reports.
411 ** A password is now hidden also when typed in batch mode. Another
412 hiding character but the default `.' can be used by let-binding the
413 variable `read-hide-char'.
416 ** New input methods: `tamil-dvorak' and `programmer-dvorak'.
419 * Editing Changes in Emacs 25.1
422 ** M-x suggests shorthands and ignores obsolete commands for completion.
427 *** Successive single-char deletions are collapsed in the undo-log just like
428 successive char insertions. Which commands invoke this behavior is
429 controlled by the new `undo-auto-amalgamate' function. See the node
430 "Undo" in the ELisp manual for more details.
433 *** The heuristic used to insert `undo-boundary' after each command
434 has changed, so that if a command causes changes in more than just the
435 current buffer, Emacs now calls `undo-boundary' in every buffer
436 affected by the command.
439 ** New command `comment-line' bound to `C-x C-;'.
441 ** New and improved facilities for inserting Unicode characters
444 *** Unicode names entered via C-x 8 RET now use substring completion by default.
447 *** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
448 € № ← → ↔ − ≈ ≠ ≤ ≥. As before, you can type C-x 8 C-h to list shorthands.
451 *** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”
452 as you type. See also the new variable ‘text-quoting-style’.
455 ** New minor mode global-eldoc-mode is enabled by default.
458 ** Emacs now uses "bracketed paste mode" on text terminals that support it.
459 Bracketed paste mode causes text terminals to wrap pasted text in special
460 escape sequences that allow Emacs to tell the difference between text
461 you type and text you paste from other applications. Emacs then
462 avoids interpreting each character in the pasted text as it does with
463 keyboard input, which results in a paste experience similar to that
464 under a window system, and significant performance improvements when
465 pasting large amounts of text.
467 Bracketed paste mode is disabled by default, so Emacs automatically
468 enables it at startup if the terminal supports it.
471 ** Emacs now supports the latest version of the UBA.
472 The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
473 was updated to support all the latest additions and changes introduced
474 in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
475 This includes full support for directional isolates and the
476 Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
480 ** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.
483 ** New buffer-local `electric-pair-local-mode'.
486 ** New variable `fast-but-imprecise-scrolling' inhibits
487 fontification during full screen scrolling operations, giving less
488 hesitant operation during auto-repeat of C-v, M-v at the cost of
489 possible inaccuracies in the end position.
492 ** New documentation command `describe-symbol'.
493 Works for functions, variables, faces, etc. It is bound to `C-h o' by
497 ** New function `custom-prompt-customize-unsaved-options' checks for
498 unsaved customizations and prompts user to customize (if found). It
499 is intended for adding to 'kill-emacs-query-functions'.
502 ** The old `C-x w' bindings in hi-lock-mode are officially deprecated
503 in favor of the global `M-s h' bindings introduced in Emacs-23.1.
504 They'll disappear soon.
507 ** New bindings for 'query-replace-map'.
508 `undo', undo the last replacement; bound to `u'.
509 `undo-all', undo all replacements; bound to `U'.
512 * Changes in Specialized Modes and Packages in Emacs 25.1
517 *** New command `checkdoc-package-keywords' checks if the
518 current package keywords are recognized. Set the new option
519 `checkdoc-package-keywords-flag' to non-nil to make
520 `checkdoc-current-buffer' call this function automatically.
523 *** New function `checkdoc-file' checks for style errors.
524 It's meant for use together with `compile':
525 emacs -batch --eval "(checkdoc-file \"subr.el\")"
530 *** The desktop format version has been upgraded from 206 to 208.
531 Although Emacs 25.1 can read a version 206 desktop, earlier Emacsen
532 cannot read a version 208 desktop. To upgrade your desktop file, you
533 must explicitly request the upgrade, by C-u M-x desktop-save. You are
534 recommended to do this as soon as you have firmly upgraded to Emacs
535 25.1 (or later). Should you ever need to downgrade your desktop file
536 to version 206, you can do this with C-u C-u M-x desktop-save.
539 ** New function `bookmark-set-no-overwrite' bound to C-x r M.
540 It raises an error if a bookmark of that name already exists,
541 unlike `bookmark-set' which silently updates an existing bookmark.
546 *** New user options `mm-html-inhibit-images' and `mm-html-blocked-images'
547 now control how mm-* functions fetch and display images in an HTML
548 message. Gnus still uses `gnus-inhibit-images' and `gnus-blocked-images'
549 for that purpose, i.e., binds mm-html- variables with those gnus-
550 variables, but other packages do not have to bind gnus- variables now.
553 *** `mm-inline-text-html-with-images' has been removed.
554 Use `mm-html-inhibit-images' instead. Note that the value is opposite
560 *** `imap-ssl-program' has been removed, and imap.el uses the internal
561 GnuTLS encryption functions if possible.
566 *** `json-pretty-print' and `json-pretty-print-buffer' now maintain
567 the ordering of object keys by default.
570 *** New commands `json-pretty-print-ordered' and
571 `json-pretty-print-buffer-ordered' pretty prints JSON objects with
572 object keys sorted alphabetically.
575 ** Prog mode has some support for multi-mode indentation.
576 This allows better indentation support in modes that support multiple
577 programming languages in the same buffer, like literate programming
578 environments or ANTLR programs with embedded Python code.
580 A major mode can provide indentation context for a sub-mode through
581 the `prog-indentation-context' variable. To support this, modes that
582 provide indentation should use `prog-widen' instead of `widen' and
583 `prog-first-column' instead of a literal zero. See the node
584 "Mode-Specific Indent" in the ELisp manual for more details.
586 ** Prettify Symbols mode
589 *** Prettify Symbols mode supports custom composition predicates. By
590 overriding the default `prettify-symbols-compose-predicate', modes can
591 specify in which contexts a symbol may be displayed as some Unicode
592 character. `prettify-symbols-default-compose-p' is the default which
593 is suitable for most programming languages such as C or Lisp (but not
597 *** Symbols can be unprettified while point is inside them.
598 New variable `prettify-symbols-unprettify-at-point' configures this.
600 ** Enhanced xterm support
603 *** The new variable `xterm-screen-extra-capabilities' for configuring xterm.
604 This variable tells Emacs which advanced capabilities are available in
605 the xterm terminal emulator used to display Emacs text-mode frames.
606 The default is to check each capability, and use it if available.
607 (This variable was introduced in Emacs 24.1, but was not announced in
611 *** Killing text now also sets the CLIPBOARD/PRIMARY selection
612 in the surrounding GUI (using the OSC-52 escape sequence). This only works
613 if your xterm supports it and enables the `allowWindowOps' options (disabled
614 by default at least in Debian, for security reasons).
616 Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
617 escape sequence) if your xterm has the feature enabled but for that you
618 additionally need to add `getSelection' to `xterm-extra-capabilities'.
621 *** `xterm-mouse-mode' now supports mouse-tracking (if your xterm supports it).
624 ** The way to turn on and off `save-place' mode has changed.
625 It is no longer sufficient to load the saveplace library and set
626 `save-place' non-nil. Instead, use the two new minor modes:
627 `save-place-mode' turns on saving last place in every file, and
628 `save-place-local-mode' does that only for the file in whose buffer it
629 is invoked. The `save-place' variable is now an obsolete alias for
630 `save-place-mode', which replaces it, and `toggle-save-place' is an
631 obsolete alias for the new `save-place-local-mode' command.
636 *** ERC can now hide message types by network or channel.
637 `erc-hide-list' will hide all messages of the specified type, while
638 `erc-network-hide-list' and `erc-channel-hide-list' will only hide the
639 specified message types for the respective specified targets.
641 *** New variable `erc-default-port-tls' used to connect to TLS IRC
645 *** Reconnection is now asynchronous.
648 *** Nick completion is now case-insensitive again after inadvertently
649 being made case-sensitive in Emacs 24.2.
654 *** New commands, key binds, and menu items.
656 **** `<' and `>' for navigating previous and next tracks in playlist
658 **** New play/pause command `mpc-toggle-play' bound to `s'
660 **** `g' bound to new command `mpc-seek-current' will navigate current
663 **** New commands `mpc-toggle-{consume,repeat,single,shuffle}' for
664 toggling playback modes.
667 *** Now supports connecting to a UNIX domain socket.
670 *** Looks at more image file names to use as album art.
671 Case-insensitively tries for .folder.png (freedesktop) and folder.jpg
672 (XP) in addition to cover.jpg.
675 *** Searches in more locations for MPD configuration files.
676 MPD supports the XDG base directory specification since version 0.17.6.
681 *** `midnight-mode' is now a proper minor mode.
684 *** clean-buffer-*-regexps can now specify buffers via predicate functions.
689 *** New "external" package status.
690 An external package is any installed package that's not built-in and
691 not from `package-user-dir', which usually means it's from an entry in
692 `package-directory-list'. They are treated much like built-in
693 packages, in that they cannot be deleted through the package menu and
694 are not considered for upgrades.
696 The effect is that a user can manually place a specific version of a
697 package inside `package-directory-list' and the package menu will
701 *** If a package is available on multiple archives and one has higher
702 priority (as per `package-archive-priorities') only that one is
703 listed. This can be configured with `package-menu-hide-low-priority'.
706 *** `package-menu-toggle-hiding' now toggles the hiding of packages.
707 This includes the above-mentioned low-priority packages, as well as
708 available packages whose version is lower than the currently installed
709 version (which were previously impossible to display).
710 This allows users to downgrade a package if a lower version is
714 *** When filtering the package menu, keywords starting with "arc:" or
715 "status:" represent package archive or status, respectively, instead
719 *** Most functions which involve downloading information now take an
720 ASYNC argument. If it is non-nil, package.el performs the download(s)
724 *** New variable `package-menu-async' controls whether the
725 package-menu uses asynchronous downloads.
728 *** `package-install-from-buffer' and `package-install-file' work on directories.
729 This follows the same rules as installing from a .tar file, except the
730 -pkg file is optional.
733 *** Packages which are dependencies of other packages cannot be deleted.
734 The FORCE argument to `package-delete' overrides this.
737 *** New custom variable `package-selected-packages' tracks packages
738 which were installed by the user (as opposed to installed as
739 dependencies). This variable can also be manually customized.
742 *** New command `package-install-selected-packages' installs all
743 packages from `package-selected-packages' which are currently missing.
746 *** `package-install' function now takes a DONT-SELECT argument. If
747 this function is called interactively or if DONT-SELECT is nil, add the
748 package being installed to `package-selected-packages'.
751 *** New command `package-autoremove' removes all packages which were
752 installed strictly as dependencies but are no longer needed.
757 When you invoke `shell' interactively, the *shell* buffer will now
758 display in a new window. However, you can customize this behavior via
759 the `display-buffer-alist' variable. For example, to get
760 the old behavior -- *shell* buffer displays in current window -- use
761 (add-to-list 'display-buffer-alist
762 '("^\\*shell\\*$" . (display-buffer-same-window))).
766 *** The `:protection' slot option is not obeyed any more.
768 *** The `newname' argument to constructors is optional&deprecated.
769 If you need your objects to be named, do it by inheriting from `eieio-named'.
771 *** The <class>-list-p and <class>-child-p functions are declared obsolete.
773 *** The <class> variables are declared obsolete.
775 *** The <initarg> variables are declared obsolete.
777 *** defgeneric and defmethod are declared obsolete.
778 Use the equivalent facilities from cl-generic.el instead.
780 *** `constructor' is now an obsolete alias for `make-instance'.
781 --- `pcase' accepts a new UPattern `eieio'.
786 *** New command `ido-bury-buffer-at-head' bound to C-S-b
787 Bury the buffer at the head of `ido-matches', analogous to how C-k
788 kills the buffer at head.
791 *** A prefix argument to `ido-restrict-to-matches' will reverse its
792 meaning, and the list is restricted to those elements that do not
793 match the current input.
798 *** You can use <UP> and <DOWN> arrow keys to move through history by lines.
799 The new commands `next-line-or-history-element' and
800 `previous-line-or-history-element', bound to <UP> and <DOWN> in the
801 minibuffer, allow by-line movement through minibuffer history,
802 similarly to an ordinary buffer. Only when point moves over
803 the bottom/top of the minibuffer it goes to the next/previous history
804 element. `M-p' and `M-n' still move directly to previous/next history
807 ** Search and Replace
810 *** `isearch' and `query-replace' can now perform character folding in matches.
811 This is analogous to case folding, but instead of disregarding case
812 variants, it disregards wider classes of distinctions between similar
813 characters. (Case folding is a special case of character folding.)
814 This means many characters in the search string will match entire
815 groups of characters instead of just themselves.
817 For instance, the ASCII double quote character " will match all
818 variants of double quotes (like “ and ”), and the letter a will match
819 all of its accented cousins, even those composed of multiple
820 characters, as well as many other symbols like ℀, ℁, ⒜, and ⓐ.
822 Character folding is enabled by customizing `search-default-mode' to
823 the value `character-fold-to-regexp'. You can also toggle character
824 folding in the middle of a search by typing `M-s ''.
826 `query-replace' honors character folding if the new variable
827 `replace-character-fold' is customized to a non-nil value.
830 *** New user option `search-default-mode'.
831 This option specifies the default mode for Isearch. The default
832 value, nil specifies that Isearch does literal searches (however,
833 `case-fold-search' and `isearch-lax-whitespace' may still be applied,
834 as in previous Emacs versions).
837 *** New function `character-fold-to-regexp' can be used
838 by searching commands to produce a regexp matching anything that
839 character-folds into STRING.
842 *** The new M-s M-w key binding uses eww to search the web for the
843 text in the region. The search engine to use for this is specified by
844 the customizable variable `eww-search-prefix'.
847 *** Query-replace history is enhanced.
848 When query-replace reads the FROM string from the minibuffer, typing
849 `M-p' will now show previous replacements as "FROM SEP TO", where FROM
850 and TO are the original text and its replacement, and SEP is an arrow
851 string defined by the new variable `query-replace-from-to-separator'.
852 To select a prior replacement, type `M-p' until the desired
853 replacement appears in the minibuffer, and then exit the minibuffer by
858 *** If `quick-calc' is called with a prefix argument, insert the
859 result of the calculation into the current buffer.
862 ** In Edebug, you can now set the initial mode with C-x C-a C-m. With
863 this you can tell Edebug not to stop at the start of the first
864 instrumented function.
869 *** New minor mode `global-eldoc-mode'
870 It is turned on by default, and affects `*scratch*' and other buffers
871 whose major mode supports Emacs Lisp.
874 *** `eldoc-documentation-function' now defaults to `ignore'
877 *** `describe-char-eldoc' displays information about character at point,
878 and can be used as a default value of `eldoc-documentation-function'. It is
879 useful when, for example, one needs to distinguish various spaces (e.g. ] [,
880 ] [, ] [, etc.) while using mono-spaced font.
885 *** HTML can now be rendered using variable-width fonts.
888 *** A new command `F' (`eww-toggle-fonts') can be used to toggle
889 whether to use variable-pitch fonts or not. The user can also
890 customize the `shr-use-fonts' variable.
893 *** A new command `C' (`eww-toggle-colors') can be used to toggle
894 whether to use the HTML-specified colors or not. The user can also
895 customize the `shr-use-colors' variable.
898 *** A new command `R' (`eww-readable') will try do identify the main
899 textual parts of a web page and display only that, leaving menus and
900 the like off the page.
903 *** A new command `D' (`eww-toggle-paragraph-direction') allows you to
904 toggle the paragraph direction between left-to-right and right-to-left.
907 *** Images that are being loaded are now marked with grey
908 "placeholder" images of the size specified by the HTML. They are then
909 replaced by the real images asynchronously, which will also now
910 respect width/height HTML specs (unless they specify widths/heights
911 bigger than the current window).
914 *** You can now use several eww buffers in parallel by renaming eww
915 buffers you want to keep separate.
918 *** Partial state of the eww buffers (the URIs and the titles of the
919 pages visited) is now preserved in the desktop file.
922 *** `eww-after-render-hook' is now called after eww has rendered
923 the data in the buffer.
926 *** The `eww-reload' command now takes a prefix to not reload via
927 the net, but just use the local copy of the HTML.
930 *** The DOM shr and eww uses has been changed to the general Emacs
931 xml.el/libxml2 DOM, and a new package dom.el has been added to
932 interact with this DOM. See the Emacs Lisp manual for interface
936 *** `mailcap-mime-data' is now consulted when displaying PDF files.
939 *** The new `S' command will list all eww buffers, and allow managing
943 *** https pages with valid certificates have headers marked in green, while
944 invalid certificates are marked in red.
949 *** text/html messages that contain inline image parts will be
950 transformed into multipart/related messages before sending.
953 *** The `message-valid-fqdn-regexp' variable has been removed, since
954 there are now top-level domains added all the time. Message will no
955 longer warn about sending emails to top-level domains it hasn't heard
958 *** `message-beginning-of-line' (bound to C-a) understands folded headers.
959 In `visual-line-mode' it will look for the true beginning of a header
960 while in non-`visual-line-mode' it will move the point to the indented
964 ** In Show Paren Mode, a parenthesis can be highlighted when point
965 stands inside it, and certain parens can be highlighted when point is
966 at BOL or EOL, or in whitespace there. To enable these, customize,
967 respectively, `show-paren-when-point-inside-paren' or
968 `show-paren-when-point-in-periphery'.
971 ** If gpg2 exists on the system, it is now used as the default value
972 of `epg-gpg-program' (instead of gpg).
977 *** Images are automatically scaled before displaying based on the
978 `image-scaling-factor' variable (if Emacs supports scaling the images
982 *** Images inserted with `insert-image' and related functions get a
983 keymap put into the text properties (or overlays) that span the
984 image. This keymap binds keystrokes for manipulating size and
985 rotation, as well as saving the image to a file. These commands are
986 also available in `image-mode'.
989 *** A new library for creating and manipulating SVG images has been
990 added. See the "SVG Images" section in the lispref manual for
994 *** New setf-able function to access and set image parameters is
995 provided: `image-property'.
1001 *** Strings after `:documentation' are highlighted as docstrings.
1002 This enhances Lisp mode fontification to handle documentation of the
1003 form `(:documentation "the doc string")' used in Common Lisp code for
1004 CLOS class and slot documentation.
1006 ** Rectangle editing
1009 *** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
1012 *** C-x C-x in rectangle-mark-mode now cycles through the four corners.
1013 *** `string-rectangle' provides on-the-fly preview of the result.
1016 ** New font-lock functions `font-lock-ensure' and `font-lock-flush'.
1017 These should be used in preference to `font-lock-fontify-buffer' when
1021 ** Macro `minibuffer-with-setup-hook' can optionally append a function
1022 to `minibuffer-setup-hook'.
1024 If the first argument of the macro is of the form `(:append FUN)',
1025 then FUN will be appended to `minibuffer-setup-hook', instead of
1030 *** New functions `cl-fresh-line', `cl-digit-char-p', and `cl-parse-integer'.
1033 *** `pcase' accepts the new UPattern `cl-struct'.
1035 ** Calendar and diary
1038 *** The default `diary-file' is now located in .emacs.d.
1041 *** New commands to insert diary entries with Chinese dates:
1042 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
1043 `diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
1046 *** The calendar can now list and mark diary entries with Chinese dates.
1047 See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
1050 *** The option `calendar-mode-line-format' can now be nil,
1051 which means to do nothing special with the mode line in calendars.
1054 *** New option `calendar-weekend-days'.
1055 The option customizes which day headers receive the
1056 `calendar-weekend-header' face.
1059 *** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.
1062 *** Many items obsolete since at least version 23.1 have been removed.
1063 The majority were function/variable/face aliases, too numerous to list here.
1066 **** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
1067 `calendar-two-frame-setup', `european-calendar', `american-calendar'.
1069 **** Hooks `cal-menu-load-hook', `cal-x-load-hook'.
1071 **** Macro `calendar-for-loop'.
1073 **** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
1075 **** The nil and list forms of `diary-display-function'.
1078 ** New ERT function `ert-summarize-tests-batch-and-exit'.
1079 If the output of ERT tests in batch mode execution can be saved to a
1080 log file, then it can be passed as an argument to the above function
1081 to produce a neat summary.
1084 ** New js.el option `js-indent-first-init'.
1085 It was renamed from `js-indent-first-initialiser', to avoid issues
1086 with American vs British spelling.
1091 ** Info mode now displays symbol names in fixed-pitch font.
1092 If you want to get the old behavior back, customize the `Info-quoted'
1093 face to use the same definitions as the default face.
1096 *** `Info-fontify-maximum-menu-size' can be t for no limit.
1099 *** `info-display-manual' can now be given a prefix argument which (any
1100 non-nil value) directs the command to limit the completion
1101 alternatives to currently visited manuals.
1104 ** ntlm.el has support for NTLM2.
1109 *** The Rmail commands `d', `C-d' and `u' take optional repeat counts
1110 to delete or undelete multiple messages.
1113 *** Rmail can now render HTML mail messages if your Emacs was built with
1114 libxml2 or if you have the Lynx browser installed. By default, Rmail
1115 will display the HTML version of a mail message that has both HTML and
1116 plain text parts, if display of HTML email is possible; customize the
1117 `rmail-mime-prefer-html' option to `nil' if you don't want that.
1120 *** In the commands that make summaries by subject, recipients, or senders,
1121 you can no longer use commas to separate regular expressions.
1124 ** SES now supports local printer functions; see `ses-define-local-printer'.
1126 ** Shell-script Mode
1128 *** In sh-mode you can now use `sh-shell' as a file-local variable to
1129 specify the type of shell in use (bash, csh, etc).
1132 *** New value `always' for `sh-indent-after-continuation'.
1133 This provides old-style ("dumb") indentation of continued lines.
1134 See the doc string of `sh-indent-after-continuation' for details.
1138 *** Fatal TLS errors are now silent by default.
1141 *** If Emacs isn't built with TLS support, an external TLS-capable
1142 program is used instead. This program used to be run in --insecure
1143 mode by default, but has now changed to be secure instead, and will
1144 fail if you try to connect to non-verifiable hosts. This is
1145 controlled by the `tls-program' variable.
1150 *** The URL package accepts now the protocols "ssh", "scp" and "rsync".
1151 When `url-handler-mode' is enabled, file operations for these
1152 protocols as well as for "telnet" and "ftp" are passed to Tramp.
1155 *** The URL package allows customizing the `url-user-agent' string.
1156 The new `url-user-agent' variable can be customized to be a string or
1160 *** The new interface variable `url-request-noninteractive' can be used
1161 to specify that we're running in a noninteractive context, and that
1162 we should not be queried about things like TLS certificate validity.
1165 *** `url-mime-accept-string' can now be used as in "interface"
1166 variable, meaning you can bind it around an `url-retrieve' call.
1169 *** If URL is used with a https connection, the first callback argument
1170 plist will contain a :peer element that has the output of
1171 `gnutls-peer-status' (if Emacs is built with GnuTLS support).
1174 *** The new function `url-cookie-delete-cookie' can be used to
1175 programmatically delete all cookies, or cookies from a specific
1181 *** New connection method "afp", which allows you to access Mac OS X
1182 volumes via the Apple Filing Protocol.
1185 *** New connection method "nc", which allows you to access dumb
1189 *** Method-specific parameters can be overwritten now with variable
1190 `tramp-connection-properties'.
1193 *** Handler for `file-notify-valid-p' for remote machines that support
1194 filesystem notifications.
1199 *** New user variable `sql-default-directory' enables remote
1200 connections using Tramp.
1203 *** New command `sql-send-line-and-next'.
1204 This command, bound to `C-c C-n' by default, sends the current line to
1205 the SQL process and advances to the next line, skipping whitespace and
1209 *** Added support for Vertica SQL.
1211 ** VC and related modes
1214 *** Basic push support, via `vc-push', bound to `C-x v P'.
1215 Implemented for Bzr, Git, Hg. As part of this change, the pre-existing
1216 (undocumented) command vc-hg-push now behaves slightly differently.
1219 *** The new command vc-region-history shows the log+diff of the active region.
1222 *** You can refresh the VC state of a file buffer with `M-x vc-refresh-state'.
1223 This command is useful when you perform version control commands
1224 outside Emacs (e.g., from the shell prompt), or if you switch the VC
1225 back-end for the buffer's file, or remove it from version control.
1228 *** The VC state indicator in the mode line now defaults to more
1229 colorful faces to make it more obvious to the user what the state is.
1230 See the `vc-faces' customization group.
1233 *** New option `vc-annotate-background-mode' controls whether
1234 the color range from `vc-annotate-color-map' is applied to the
1235 background or to the foreground.
1238 *** `compare-windows' now compares text with the most recently selected window
1239 instead of the next window. If you want the previous behavior of
1240 comparing with the next window, customize the new option
1241 `compare-windows-get-window-function' to the value
1242 `compare-windows-get-next-window'.
1245 *** Two new faces `compare-windows-removed' and `compare-windows-added'
1246 replace the face `compare-windows', which is now an obsolete alias for
1247 `compare-windows-added'.
1250 *** The VC state indicator in the mode line now has different faces
1251 corresponding to each of the possible states. See the `vc-faces'
1252 customization group.
1255 *** `log-edit-insert-changelog' converts "(tiny change)" to
1256 "Copyright-paperwork-exempt: yes". Set `log-edit-rewrite-tiny-change'
1257 nil to disable this.
1260 ** VHDL mode now supports VHDL'08.
1265 *** Decimal display mode uses "," groups, so it's more
1266 fitting for use in money calculations
1269 *** Factorial works with non-integer inputs.
1274 *** Hide-IfDef mode now support full C/C++ expressions in macros,
1275 macro argument expansion, interactive macro evaluation and automatic
1276 scanning of #define'd symbols.
1279 *** New command `hif-evaluate-macro', bound to `C-c @ e', displays the
1280 result of evaluating a macro.
1283 *** New command `hif-clear-all-ifdef-define', bound to `C-c @ C', clears
1284 all defined symbols in `hide-ifdef-env'.
1287 *** New custom variable `hide-ifdef-header-regexp' to define C/C++ header
1288 file name patterns. Defaults to files whose extension is one of `.h',
1289 `.hh', `.hpp', `.hxx', or `.h++', matched case-insensitively.
1292 *** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
1293 reinclusion protected (a.k.a. "idempotent") header files from being hidden.
1294 (This could happen when an idempotent header file is visited again,
1295 when its guard symbol is already defined.) Defaults to `t'.
1298 *** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
1299 name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be ignored when
1300 looking for macro definitions. By default, no symbols are ignored.
1305 *** New custom variable `tex-print-file-extension' to help users who
1306 use PDF instead of DVI.
1309 *** TeX mode now supports Prettify Symbols mode. When enabling
1310 `prettify-symbols-mode' in a tex-mode buffer, \alpha ... \omega, and
1311 many other math macros are displayed using unicode characters.
1314 ** New `big-indent' style in `whitespace-mode' highlights deep indentation.
1315 By default, 32 consecutive spaces or four consecutive TABs are
1316 considered to be too deep, but the new variable
1317 `whitespace-big-indent-regexp' can be customized to change that.
1320 ** New options in `tildify-mode'.
1321 New options `tildify-space-string', `tildify-pattern', and
1322 `tildify-foreach-region-function' variables make
1323 `tildify-string-alist', `tildify-pattern-alist', and
1324 `tildify-ignored-environments-alist' variables (as well as a few
1325 helper functions) obsolete.
1328 ** New package Xref replaces Etags's front-end and UI
1330 The new package Xref provides a generic framework and new commands to
1331 find and move to definitions of functions, macros, data structures
1332 etc., as well as go back to the location where you were before moving
1333 to a definition. It supersedes and obsoletes many Etags commands,
1334 while still using the etags.el code that reads the TAGS tables as one
1337 The command `xref-find-definitions' replaces `find-tag' and provides
1338 an interface to pick one definition among several.
1339 `tags-loop-continue' is now unbound. `xref-pop-marker-stack' replaces
1340 `pop-tag-mark', but has a keybinding (`M-,') different from the one
1341 `pop-tag-mark' used.
1343 `xref-find-definitions-other-window' replaces `find-tag-other-window'.
1344 `xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
1345 `xref-find-apropos' replaces `find-tag-regexp'.
1347 As a result of this, the following commands are now obsolete:
1348 `find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
1351 `tags-loop-continue' is not obsolete because it's still useful in
1352 `tags-search' and `tags-query-replace', for which there are no direct
1356 *** Variants of `tags-search' and `tags-query-replace' in Dired were also
1357 replaced by xref-style commands, see the "Dired" section below.
1362 `find-tag-marker-ring-length' is now an obsolete alias for
1363 `xref-marker-ring-length'. `find-tag-marker-ring' is now an obsolete
1364 alias for a private variable. `xref-push-marker-stack' and
1365 `xref-pop-marker-stack' should be used instead to manipulate the stack
1366 of searches for definitions.
1369 *** `xref-find-definitions' and `describe-function' now display
1370 information about mode local overrides (defined by cedet/mode-local.el
1371 `define-overloadable-function' `define-mode-local-overrides').
1373 The framework's Lisp API is still experimental and can change in major,
1374 backward-incompatible ways.
1377 ** New package Project
1379 The new package Project provides generic infrastructure for dealing
1380 with projects. The main commands included in it are
1381 `project-find-file' and `project-find-regexp'.
1383 The Lisp API of this package is still experimental.
1386 EUDC's LDAP backend has been improved.
1389 *** EUDC supports LDAP-over-SSL URLs (ldaps://).
1392 *** EUDC passes LDAP passwords through a pipe to the ldapsearch
1393 subprocess instead of on the command line.
1396 *** EUDC handles LDAP wildcards automatically so the user shouldn't
1397 need to configure this manually anymore.
1400 *** The LDAP configuration section of EUDC's manual has been
1403 There have also been customization changes.
1406 *** New custom variable `eudc-server-hotlist' to allow specifying
1407 multiple EUDC servers in init file.
1410 *** Custom variable `eudc-inline-query-format' defaults to completing
1411 on email and firstname instead of surname.
1414 *** Custom variable `eudc-expansion-overwrites-query' defaults to nil
1415 to avoid interfering with the kill ring.
1418 *** Custom variable `eudc-inline-expansion-format' defaults to
1419 "Firstname Surname <mail-address>".
1422 *** Custom variable `eudc-options-file' defaults to
1423 "~/.emacs.d/eudc-options".
1426 *** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
1427 allow overriding the regular expression that recognizes the ldapsearch
1428 command line's password prompt.
1431 EUDC's BBDB backend now supports BBDB 3.
1434 EUDC's PH backend (eudcb-ph.el) is obsolete.
1439 *** The new built-in command `clear' can scroll window contents out of sight.
1440 If provided with an optional non-nil argument, the scrollback contents will be cleared.
1443 *** New buffer syntax '#<buffer-name>', which is equivalent to
1444 '#<buffer buffer-name>'. This shorthand makes interacting with
1445 buffers from eshell more convenient. Custom variable
1446 `eshell-buffer-shorthand', which has been broken for a while, has been
1450 *** By default, eshell "visual" program buffers (created by
1451 `eshell-visual-commands' and similar custom vars) are no longer killed
1452 when their processes die. This fixes issues with short-lived commands
1453 and makes visual programs more useful in general. For example, if
1454 "git log" is a visual command, it will always show the visual command
1455 buffer, even if the "git log" process dies. For the old behavior,
1456 make the new option `eshell-destroy-buffer-when-process-dies' non-nil.
1461 *** Support for the Google Chrome web browser.
1464 *** Support for the Conkeror web browser.
1467 *** Support for several ancient browsers is now officially obsolete.
1470 ** tar-mode: new `tar-new-entry' command, allowing for new members to
1471 be added to the archive.
1476 *** Dired buffers are also auto-reverted via file notifications, if
1477 Emacs is compiled with file notification support.
1480 *** `auto-revert-use-notify' is set to nil in `global-auto-revert-mode'.
1481 See <http://debbugs.gnu.org/22814>.
1483 ** File Notifications
1486 *** The kqueue library is integrated for *BSD and Mac OS X machines.
1489 *** The new event `stopped' signals, that a file notification watch is
1490 not active any longer.
1493 *** The new function `file-notify-valid-p' checks, whether a file
1494 notification descriptor still corresponds to an activate watch.
1499 *** The command `dired-do-compress' bound to `Z' now can compress
1500 directories and decompress zip files.
1503 *** New command `dired-do-compress-to' bound to `c' can be used to
1504 compress many marked files into a single named archive. The
1505 compression command is determined from the new
1506 `dired-compress-files-alist' variable.
1509 *** In wdired, when editing files to contain slash characters,
1510 the resulting directories are automatically created. Whether
1511 to do this or not is controlled by the
1512 `wdired-create-parent-directories' variable.
1515 *** `W' is now bound to `browse-url-of-dired-file', and is useful for
1516 viewing HTML files and the like.
1518 *** New user interface for the `A' and `Q' commands.
1519 These keys, now bound to `dired-do-find-regexp' and
1520 `dired-do-find-regexp-and-replace', work similarly to `xref-find-apropos'
1521 and `xref-query-replace-in-results': they present the matches
1522 in the `*xref*' buffer and let you move through the matches. No need
1523 to use `tags-loop-continue' to resume the search or replace loop. The
1524 previous commands, `dired-do-search' and
1525 `dired-do-query-replace-regexp', are still available, but not bound to
1526 keys; rebind `A' and `Q' to invoke them if you want the old behavior
1527 back. We intend to obsolete the old commands in a future release.
1529 ** Tabulated List Mode
1532 *** It is now safe for a mode that derives `tabulated-list-mode' to not
1533 call `tabulated-list-init-header', in which case it will have no
1537 *** `tabulated-list-print' takes a second optional argument, update,
1538 which specifies an alternative printing method which is faster when
1539 few or no entries have changed.
1541 ** Obsolete packages
1547 *** landmark.el (moved to elpa.gnu.org)
1550 * New Modes and Packages in Emacs 25.1
1553 ** pinentry.el allows GnuPG passphrase to be prompted through the
1554 minibuffer instead of a graphical dialog, depending on whether the gpg
1555 command is called from Emacs (i.e., INSIDE_EMACS environment variable
1556 is set). This feature requires newer versions of GnuPG (2.1.5 or
1557 later) and Pinentry (0.9.5 or later). To use this feature, add
1558 "allow-emacs-pinentry" to "~/.gnupg/gpg-agent.conf" and reload the
1559 configuration with "gpgconf --reload gpg-agent".
1562 ** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
1563 The main entry points are `cl-defgeneric' and `cl-defmethod'. See the
1564 node "Generic Functions" in the Emacs Lisp manual for more details.
1567 ** scss-mode (a minor variant of css-mode) is a major mode for editing
1568 SCSS (Sassy CSS) files.
1571 ** let-alist is a new macro (and a package) that allows one to easily
1572 let-bind the values stored in an alist.
1575 ** `tildify-mode' allows automatic insertion of hard spaces as one
1576 types the text. Breaking line after a single-character words is
1577 forbidden by Czech and Polish typography (and may be discouraged in
1578 other languages), so `auto-tildify-mode' makes it easier to create
1579 a typographically-correct documents.
1582 ** The `seq' library adds sequence manipulation functions and macros
1583 that complement basic functions provided by subr.el. All functions
1584 are prefixed with `seq-' and work on lists, strings and vectors.
1585 `pcase' accepts a new Upattern `seq'.
1588 ** The `map' library provides map-manipulation functions that work on
1589 alists, hash-table and arrays. All functions are prefixed with
1590 `map-'. `pcase' accepts a new UPattern `map'.
1593 ** The `thunk' library provides functions and macros to control the
1594 evaluation of forms.
1597 ** js-jsx-mode (a minor variant of js-mode) provides indentation
1598 support for JSX, an XML-like syntax extension to ECMAScript.
1601 * Incompatible Lisp Changes in Emacs 25.1
1604 ** `setq' and `setf' must now be called with an even number of
1605 arguments. The earlier behavior of silently supplying a nil to the
1606 last variable when there was an odd number of arguments has been
1610 ** `syntax-begin-function' is declared obsolete.
1611 Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
1612 slot in font-lock-defaults.
1615 ** `package-initialize' now sets `package-enable-at-startup' to nil if
1616 called during startup. Users who call this function in their init
1617 file and still expect it to be run after startup should set
1618 `package-enable-at-startup' to t after the call to
1619 `package-initialize'.
1622 ** `:global' minor mode use `setq-default' rather than `setq'.
1623 This means that you can't use `make-local-variable' and expect them to
1624 "magically" become buffer-local.
1627 ** `track-mouse' no longer freezes the shape of the mouse pointer.
1628 The `track-mouse' form no longer refrains from changing the shape of
1629 the mouse pointer for the entire time the body of that form is
1630 executed. Lisp programs that use `track-mouse' for dragging across
1631 large portions of the Emacs display, and want to avoid changes in the
1632 pointer shape during dragging, should bind the variable `track-mouse'
1633 to the special value `dragging' in the body of the form.
1636 ** The optional `predicate' argument of `lisp-complete-symbol' no longer
1637 has any effect. (This change was made in Emacs 24.4 but was not
1638 advertised at the time.)
1641 ** `indirect-function' does not signal `void-function' any more.
1642 This is mostly a bug-fix, since this change was missed back in 24.4 when
1643 symbol-function was changed not to signal `void-function' any more.
1646 *** As a consequence, the second arg of `indirect-function' is now obsolete.
1649 ** Comint, term, and compile do not set the EMACS env var any more.
1650 Use the INSIDE_EMACS environment variable instead.
1652 ** `C-up', `C-down', `C-left' and `C-right' are now defined in term
1653 mode to send the same escape sequences that xterm does. This makes
1654 things like forward-word in readline work.
1657 ** hideshow mode got four key bindings that are analogous to outline
1658 mode bindings: `C-c @ C-a', `C-c @ C-t', `C-c @ C-d', and `C-c @ C-e.'
1661 ** `save-excursion' does not save&restore the mark any more.
1662 Use `save-mark-and-excursion' if you want the old behavior.
1665 ** `read-buffer' and `read-buffer-function' can now be called with a 4th
1666 argument (`predicate').
1669 ** `completion-table-dynamic' by default stays in the minibuffer.
1670 The minibuffer will be the current buffer when the function is called.
1671 If you want the old behavior of calling the function in the buffer
1672 from which the minibuffer was entered, use the new argument
1673 `switch-buffer' to `completion-table-dynamic'.
1676 ** window-configurations no longer record the buffers' marks.
1679 ** inhibit-modification-hooks now also inhibits lock-file checks, as well as
1680 active region handling.
1683 ** deactivate-mark is now buffer-local.
1686 ** `cl-the' now asserts that its argument is of the given type.
1689 ** `process-running-child-p' may now return a numeric process
1690 group ID instead of `t'.
1693 ** Mouse click events on mode line or header line no longer include
1694 any reference to a buffer position. The 6th member of the mouse
1695 position list returned for such events is now nil.
1698 ** Menu items in keymaps do not support the "key shortcut cache" any more.
1699 These slots used to hold key-shortcut data, but have been obsolete since
1703 ** Emacs no longer downcases the first letter of a system diagnostic
1704 when signaling a file error. For example, it now reports "Permission
1705 denied" instead of "permission denied". The old behavior was problematic
1706 in languages like German where downcasing rules depend on grammar.
1709 ** New variable ‘text-quoting-style’ to control how Emacs translates quotes.
1710 Set it to ‘curve’ for curved single quotes ‘like this’, to ‘straight’
1711 for straight apostrophes 'like this', and to ‘grave’ for grave accent
1712 and apostrophe `like this'. The default value nil acts like ‘curve’
1713 if curved single quotes are displayable, and like ‘grave’ otherwise.
1714 The new variable affects display of diagnostics and help, but not of info.
1717 ** substitute-command-keys now replaces quotes.
1718 That is, it converts documentation strings’ quoting style as per the
1719 value of ‘text-quoting-style’. Doc strings in source code can use
1720 either curved single quotes or grave accents and apostrophes. As
1721 before, characters preceded by \= are output as-is.
1724 ** Message-issuing functions ‘error’, ‘message’, etc. now convert quotes.
1725 They use the new ‘format-message’ function instead of plain ‘format’,
1726 so that they now follow user preference as per ‘text-quoting-style’
1727 when processing curved single quotes, grave accents, and apostrophes
1728 in their format argument.
1731 ** The character classes [:alpha:] and [:alnum:] in regular expressions
1732 now match multibyte characters using Unicode character properties.
1733 If you want the old behavior where they matched any character with
1734 word syntax, use `\sw' instead.
1737 ** The character classes [:graph:] and [:print:] in regular expressions
1738 no longer match every multibyte character. Instead, Emacs now
1739 consults the Unicode character properties to determine which
1740 characters are graphic or printable. In particular, surrogates and
1741 unassigned codepoints are now rejected. If you want the old behavior,
1742 use [:multibyte:] instead.
1745 ** The `diff' command uses the unified format now. To restore the old
1746 behavior, set `diff-switches' to `-c'.
1749 ** `grep-template' and `grep-find-template' values don't include the
1750 --color argument anymore. It's added at the <C> place holder position
1751 dynamically. Any third-party code that changes these templates should
1752 be updated accordingly.
1754 ** The grep/rgrep/lgrep functions will now ask about saving files
1755 before running. This is controlled by the `grep-save-buffers'
1759 ** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
1760 The new behavior is compatible with Common Lisp and with XEmacs.
1761 This change does not affect Lisp code intended to be portable to
1762 Emacs 24.2 and earlier, which did not support unary ‘/’.
1765 ** The `default-directory' value doesn't have to end slash. To make
1766 that happen, `unhandled-file-name-directory' now defaults to calling
1767 `file-name-as-directory'.
1770 * Lisp Changes in Emacs 25.1
1774 *** New UPatterns `quote', `app'.
1776 *** New UPatterns can be defined with `pcase-defmacro'.
1778 *** New vector QPattern.
1781 ** syntax-propertize is now automatically called on-demand during forward
1782 parsing functions like `forward-sexp'.
1785 ** New hooks `prefix-command-echo-keystrokes-functions' and
1786 `prefix-command-preserve-state-hook' allow the definition of prefix
1787 commands other than the predefined `C-u'.
1790 ** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
1791 These allow conversion between buffer positions and the corresponding
1792 file byte offsets, given the file's encoding.
1795 ** The default value of `load-read-function' is now `read'.
1796 Previously, the default value of `nil' implied using `read'.
1799 ** New hook `pre-redisplay-functions'.
1800 It is a bit easier to use than `pre-redisplay-function'.
1803 ** The second arg of `looking-back' should always be provided explicitly.
1804 Previously, it was an optional argument, now it's mandatory.
1807 ** Text properties `intangible', `point-entered', and `point-left' are obsolete.
1808 Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
1809 implemented by the new `cursor-intangible-mode' and
1810 `cursor-sensor-mode' minor modes.
1813 ** `inhibit-point-motion-hooks' now defaults to `t' and is obsolete.
1814 Use the new minor modes `cursor-intangible-mode' and
1815 `cursor-sensor-mode' instead.
1818 ** New process type `pipe', which can be used in combination with the
1819 `:stderr' keyword of make-process to handle standard error output
1823 ** New function `make-process' provides an alternative interface to
1824 `start-process'. It allows programs to set process parameters such as
1825 process filter, sentinel, etc., through keyword arguments (similar to
1826 `make-network-process').
1829 ** A new function `directory-files-recursively' returns all matching
1830 files (recursively) under a directory.
1833 ** New variable `inhibit-message', when bound to non-nil, inhibits
1834 `message' and related functions from displaying messages in the echo
1835 area. The output is still logged to the *Messages* buffer.
1838 ** A new text property `inhibit-read-only' can be used in read-only
1839 buffers to allow certain parts of the text to be writable.
1842 ** A new variable `comment-end-can-be-escaped' is useful in languages
1843 such as C and C++ where line comments with escaped newlines are
1844 continued to the next line.
1847 ** New macro `define-advice'.
1850 ** Emacs Lisp now supports generators.
1851 See the "Generators" section of the ELisp manual for the details.
1854 ** New finalizer facility for running code when objects become unreachable.
1855 See the "Finalizer Type" subsection in the ELisp manual for the
1859 ** lexical closures can use (:documentation FORM) to build their docstring.
1860 It should be placed right where the docstring would be, and FORM is then
1861 evaluated (and should return a string) when the closure is built.
1864 ** The new command `fortune-message' has been added, which displays
1865 fortunes in the echo area.
1868 ** define-inline provides a new way to define inlinable functions.
1871 ** New function `macroexpand-1' to perform a single step of macro expansion.
1874 ** Some "x-*" functions were obsoleted and/or renamed:
1875 *** x-select-text is renamed gui-select-text.
1876 *** x-selection-value is renamed gui-selection-value.
1877 *** x-get-selection is renamed gui-get-selection.
1878 *** x-get-clipboard and x-clipboard-yank are marked obsolete.
1879 *** x-get-selection-value is renamed to gui-get-primary-selection.
1880 *** x-set-selection is renamed to gui-set-selection
1883 ** New function `string-greaterp', which return the opposite result of
1887 ** The new functions `string-collate-lessp' and `string-collate-equalp'
1888 preserve the collation order as defined by the system's locale(1)
1889 environment. For the time being this is implemented for modern POSIX
1890 systems and for MS-Windows, for other systems they fall back to their
1891 counterparts `string-lessp' and `string-equal'.
1894 ** The new function `string-version-lessp' compares strings by
1895 interpreting consecutive runs of numerical characters as numbers, and
1896 compares their numerical values. According to this predicate,
1897 "foo2.png" is smaller than "foo12.png".
1900 *** The ls-lisp package uses `string-collate-lessp' to sort file names.
1901 The effect is that, on systems that use ls-lisp for Dired, the default
1902 sort order of the files in Dired is now different from what it was in
1903 previous versions of Emacs. In particular, the file names are sorted
1904 disregarding punctuation, accents, and diacritics, and letter case is
1905 ignored. For example, files whose name begin with a period will no
1906 longer appear near the beginning of the directory listing. If you
1907 want the old, locale-independent sorting, customize the new option
1908 `ls-lisp-use-string-collate' to the nil value.
1911 *** The MS-Windows specific variable `w32-collate-ignore-punctuation',
1912 if set to a non-nil value, causes the above 2 functions to ignore
1913 symbol and punctuation characters when collating strings. This
1914 emulates the behavior of modern Posix platforms when the locale's
1915 codeset is "UTF-8" (as in "en_US.UTF-8"). This is needed because
1916 MS-Windows doesn't support UTF-8 as codeset in its locales.
1919 ** New function `alist-get', which is also a valid place (aka lvalue).
1922 ** New function `funcall-interactively', which works like `funcall'
1923 but makes `called-interactively-p' treat the function as (you guessed it)
1924 called interactively.
1927 ** New function `function-put' to use instead of `put' for function properties.
1930 ** The new function `bidi-find-overridden-directionality' allows you to
1931 find characters whose directionality was, perhaps maliciously,
1932 overridden by directional override control characters. Lisp programs
1933 can use this to detect potential phishing of URLs and other links that
1934 exploits bidirectional display reordering.
1937 ** The new function `buffer-substring-with-bidi-context' allows you to
1938 copy a portion of a buffer into a different location while preserving
1939 the visual appearance both of the copied text and the text at
1940 destination, even when the copied text includes mixed bidirectional
1941 text and directional control characters.
1944 ** New properties that can be specified with `declare':
1945 *** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
1946 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
1947 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
1951 ** New macro `with-file-modes', for evaluating expressions with default file
1952 permissions set to temporary values (e.g., for creating private files).
1955 ** You can access the slots of structures using `cl-struct-slot-value'.
1958 ** Function `sort' can deal with vectors.
1961 ** Function `system-name' now returns an updated value if the current
1962 system's name has changed or if the Emacs process has changed systems,
1963 and to avoid long waits it no longer consults DNS to canonicalize the
1964 name. The variable `system-name' is now obsolete.
1967 ** Function `write-region' no longer outputs "Wrote FILE" in batch mode.
1970 ** If `pwd' is called with a prefix argument, insert the current default
1974 ** New functions return extended information about fonts and faces.
1977 *** The function `font-info' now returns more details about a font.
1978 In particular, it now returns the average width of the font's
1979 characters, which can be used for geometry-related calculations.
1982 *** A new function `default-font-width' returns the average width of a
1983 character in the current buffer's default font. If the default face
1984 is remapped (see `face-remapping-alist'), the value for the remapped
1985 face is returned. This function complements the existing function
1986 `default-font-height'.
1989 *** New functions `window-font-height' and `window-font-width' return
1990 the height and average width of characters in a specified face and
1991 window. If FACE is remapped (see `face-remapping-alist'), the
1992 function returns the information for the remapped face.
1995 *** A new function `window-max-chars-per-line' returns the maximal
1996 number of characters that can be displayed on one line. If a face
1997 and/or window are provided, these values are used for the
1998 calculation. This function is different from `window-body-width' in
1999 that it accounts for (i) continuation glyphs, (ii) the size of the
2000 font, and (iii) the specified window.
2003 ** New utilities in subr-x.el:
2004 *** New macros `if-let' and `when-let' allow defining bindings and to
2005 execute code depending whether all values are true.
2006 *** New macros `thread-first' and `thread-last' allow threading a form
2007 as the first or last argument of subsequent forms.
2010 ** Documentation strings now support quoting with curved single quotes
2011 ‘like-this’ in addition to the old style with grave accent and
2012 apostrophe `like-this'. The new style looks better on today's displays.
2013 In the new Electric Quote mode, you can enter curved single quotes
2014 into documentation by typing ` and '. Outside Electric Quote mode,
2015 you can enter them by typing ‘C-x 8 [’ and ‘C-x 8 ]’, or (if your Alt
2016 key works) by typing ‘A-[’ and ‘A-]’. As described above under
2017 ‘text-quoting-style’, the user can specify how to display doc string
2021 ** New function ‘format-message’ is like ‘format’ and also converts
2022 curved single quotes, grave accents and apostrophes as per
2023 ‘text-quoting-style’.
2026 ** show-help-function's arg is converted via substitute-command-keys
2027 before being passed to the function. Help strings, help-echo
2028 properties, etc. can therefore contain command key escapes and
2032 ** Time-related changes:
2034 *** Time conversion functions now accept an optional ZONE argument
2035 that specifies the time zone rules for conversion. ZONE is omitted or
2036 nil for Emacs local time, t for Universal Time, ‘wall’ for system wall
2037 clock time, or a string as in ‘set-time-zone-rule’ for a time zone
2038 rule. The affected functions are ‘current-time-string’,
2039 ‘current-time-zone’, ‘decode-time’, and ‘format-time-string’. The
2040 function ‘encode-time’, which already accepted a simple time zone rule
2041 argument, has been extended to accept all the new forms.
2043 *** Time-related functions now consistently accept numbers
2044 (representing seconds since the epoch) and nil (representing the
2045 current time) as well as the usual list-of-integer representation.
2046 Affected functions include `current-time-string', `current-time-zone',
2047 `decode-time', `float-time', `format-time-string', `seconds-to-time',
2048 `time-add', `time-less-p', `time-subtract', `time-to-day-in-year',
2049 `time-to-days', and `time-to-seconds'.
2051 *** The `encode-time-value' and `with-decoded-time-value' macros have
2054 *** `calendar-next-time-zone-transition', `time-add', and
2055 `time-subtract' no longer return time values in the obsolete and
2056 undocumented integer-pair format. Instead, they return a list of two
2060 ** New function `set-binary-mode' allows switching a standard stream
2061 of the Emacs process to binary I/O mode.
2064 ** The new function `directory-name-p' can be used to check whether a file
2065 name (as returned from, for instance, `file-name-all-completions') is
2066 a directory file name. It returns non-nil if the last character in
2067 the name is a directory separator character (forward slash on GNU and
2068 Unix systems, forward- or backslash on MS-Windows and MS-DOS).
2071 ** ASCII approximations to curved quotes are put in standard-display-table
2072 if the terminal cannot display curved quotes.
2075 ** Standard output and error streams now transliterate characters via
2076 standard-display-table, and encode output using locale-coding-system.
2077 To force a specific encoding, bind `coding-system-for-write' to the
2078 coding-system of your choice when invoking functions like `prin1' and
2082 ** New var `truncate-string-ellipsis' to choose how to indicate truncation.
2085 ** New possible value for `system-type': `nacl'.
2086 This is used by Google's Native Client (NaCl).
2089 ** `read-color' will now display the color names using the color itself
2090 as the background color.
2093 ** There is now a new variable `flyspell-sort-corrections-function'
2094 that allows changing the way corrections are sorted.
2096 ** Miscellaneous name change
2099 For consistency with the usual Emacs spelling, the Lisp variable
2100 `hfy-optimisations' has been renamed to `hfy-optimizations'.
2101 The old name should still work, as an obsolescent alias.
2103 ** Changes in Frame- and Window- Handling
2106 *** Emacs can now draw horizontal scroll bars on some platforms that
2107 provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
2108 Horizontal scroll bars are turned off by default.
2110 **** New function `horizontal-scroll-bars-available-p' telling whether
2111 horizontal scroll bars are available on the underlying system.
2113 **** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
2114 bars on all existing and future frames.
2116 **** New function `toggle-horizontal-scroll-bar' to toggle horizontal
2117 scroll bars on the selected frame.
2119 **** New frame parameters `horizontal-scroll-bars' and
2120 `scroll-bar-height' to set horizontal scroll bars and their height
2121 for individual frames and in `default-frame-alist'.
2123 **** New functions `frame-scroll-bar-height' and
2124 `window-scroll-bar-height' return the height of horizontal scroll
2125 bars on a specific frame or window.
2127 **** `set-window-scroll-bars' now accepts five parameters where the last
2128 two specify height and type of the window's horizontal scroll bar.
2130 **** `window-scroll-bars' now returns type and sizes of horizontal scroll
2133 **** New buffer-local variables `horizontal-scroll-bar' and
2134 `scroll-bar-height'.
2137 *** New functions `frame-geometry' and `frame-edges' give access to a
2141 *** New functions `mouse-absolute-pixel-position' and
2142 `set-mouse-absolute-pixel-position' get/set screen coordinates of the
2146 *** The function `window-edges' now accepts three additional arguments to
2147 retrieve body, absolute and pixel edges of the window.
2150 *** The functions `window-inside-edges', `window-inside-pixel-edges' and
2151 `window-inside-absolute-pixel-edges' have been renamed to respectively
2152 `window-body-edges', `window-body-pixel-edges' and
2153 `window-absolute-body-pixel-edges'. The old names are kept as aliases.
2156 *** New function `window-absolute-pixel-position' to get the screen
2157 coordinates of a visible buffer position.
2160 *** The height of a frame's menu and tool bar are no longer counted in the
2161 frame's text height. This means that the text height stands only for
2162 the height of the frame's root window plus that of the echo area (if
2163 present). This was already the behavior for frames with external tool
2164 and menu bars (like in the Gtk builds) but has now been extended to all
2168 *** Frames now do not necessarily preserve the number of columns or lines
2169 they display when setting default font, menu bar, fringe width, or
2170 scroll bars. In particular, maximized and fullscreen frames are
2171 conceptually never resized if such settings change. For fullheight and
2172 fullwidth frames, the behavior may depend on the toolkit used.
2173 **** New option `frame-inhibit-implied-resize' if non-nil, means that
2174 setting default font, menu bar, fringe width, or scroll bars of a
2175 specific frame does not resize that frame in order to preserve the
2176 number of columns or lines it displays.
2179 *** New function `window-preserve-size' allows you to preserve the size of
2180 a window without "fixing" it. It's supported by `fit-window-to-buffer',
2181 `temp-buffer-resize-mode' and `display-buffer'.
2184 *** New `display-buffer' action function `display-buffer-use-some-frame'.
2185 This displays the buffer in an existing frame other than the current
2186 frame, and allows the caller to specify a frame predicate to exclude
2190 *** New minor mode `window-divider-mode' and options
2191 `window-divider-default-places', `window-divider-default-bottom-width'
2192 and `window-divider-default-right-width'.
2195 ** Tearoff menus and detachable toolbars for Gtk+ have been removed.
2196 Those features have been deprecated in Gtk+ for a long time.
2201 *** etags no longer qualifies class members by default.
2203 By default, `etags' will not qualify class members for Perl and C-like
2204 object-oriented languages with their class names and namespaces, and
2205 will remove qualifications used explicitly in the code from the tag
2206 names it puts in TAGS files. This is so the etags.el back-end for
2207 `xref-find-definitions' is more accurate and produces less false
2210 Use --class-qualify (-Q) if you want the old default behavior of
2211 qualifying class members in C++, Java, Objective C, and Perl. Note
2212 that using -Q might make some class members become "unknown" to `M-.'
2213 (`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
2214 qualified names by hand.
2217 *** New language Ruby
2219 Names of modules, classes, methods, functions, and constants are
2220 tagged. Overloaded operators are also tagged.
2224 Names of packages, functions, and types are tagged.
2227 *** Improved support for Lua
2229 Etags now tags functions even if the "function" keyword follows some
2230 whitespace at line beginning.
2233 * Changes in Emacs 25.1 on Non-Free Operating Systems
2236 ** MS-Windows specific Emacs build scripts are no longer in the distribution
2237 This includes the makefile.w32-in files in various subdirectories, and
2238 the support files. The file nt/configure.bat now just tells the user
2239 to use the procedure described in nt/INSTALL, by running the Posix
2240 `configure' script in the top-level directory.
2243 ** Building Emacs for MS-Windows requires at least Windows XP
2244 or Windows Server 2003. The built binaries still run on all versions
2245 of Windows starting with Windows 9X.
2248 ** Emacs running on MS-Windows now supports the daemon mode.
2251 ** The byte counts in etags-generated TAGS files are now the same on
2252 MS-Windows as they are on other platforms.
2255 ** On OS X, configure creates a Cocoa ("Nextstep") build by default.
2256 Pass '--without-ns' to configure to create an X11 build, the old default.
2259 ** OS X 10.5 or older is no longer supported.
2262 ** OS X on PowerPC is no longer supported.
2265 ** New variable `ns-use-fullscreen-animation' controls animation for
2266 non-native NS fullscreen. The default is nil. Set to t to enable
2267 animation when entering and leaving fullscreen. For native OSX fullscreen
2271 ** The new function 'w32-application-type' returns the type of an
2272 MS-Windows application given the name of its executable program file.
2274 ** New variable `w32-pipe-buffer-size'.
2275 It can be used to tune the size of the buffer of pipes created for
2276 communicating with subprocesses, when the program run by a subprocess
2277 exhibits unusual buffering behavior. Default is zero, which lets the
2278 OS use its default size.
2281 ----------------------------------------------------------------------
2282 This file is part of GNU Emacs.
2284 GNU Emacs is free software: you can redistribute it and/or modify
2285 it under the terms of the GNU General Public License as published by
2286 the Free Software Foundation, either version 3 of the License, or
2287 (at your option) any later version.
2289 GNU Emacs is distributed in the hope that it will be useful,
2290 but WITHOUT ANY WARRANTY; without even the implied warranty of
2291 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2292 GNU General Public License for more details.
2294 You should have received a copy of the GNU General Public License
2295 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2301 paragraph-separate: "[
\f]*$"