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,
38 * Startup Changes in Emacs 25.2
41 * Changes in Emacs 25.2
44 ** `align-regexp' has a separate history for its interactive argument
45 `align-regexp' no longer shares its history with all other
46 history-less functions that use `read-string'
49 ** The networking code has been reworked so that it's more
50 asynchronous than it was (when specifying :nowait t in
51 `make-network-process'). How asynchronous it is varies based on the
52 capabilities of the system, but on a typical GNU/Linux system the DNS
53 resolution, the connection, and (for TLS streams) the TLS negotiation
54 are all done without blocking the main Emacs thread. To get
55 asynchronous TLS, the TLS boot parameters have to be passed in (see
56 the manual for details).
58 Certain process oriented functions (like `process-datagram-address')
59 will block until socket setup has been performed. The recommended way
60 to deal with asynchronous sockets is to avoid interacting with them
61 until they have changed status to "run". This is most easily done
62 from a process sentinel.
64 ** `make-network-stream' has always allowed :service to be specified
65 as a "number string" (i.e., :service "993") when using gethostbyname,
66 but has required using a real number (i.e., :service 993) on systems
67 without gethostbyname. This difference has now been eliminated, and
68 you can use "number strings" on all systems.
70 ** It is possible to disable attempted recovery on fatal signals
72 Two new variables allow to disable attempts to recover from stack
73 overflow and to avoid automatic auto-save when Emacs is delivered a
74 fatal signal. `attempt-stack-overflow-recovery', if set to `nil',
75 will disable attempts to recover from C stack overflows; Emacs will
76 then crash as with any other fatal signal.
77 `attempt-orderly-shutdown-on-fatal-signal', if set to `nil', will
78 disable attempts to auto-save the session and shut down in an orderly
79 fashion when Emacs receives a fatal signal; instead, Emacs will
80 terminate immediately. Both variables are non-`nil' by default.
81 These variables are for users who would like to avoid the small
82 probability of data corruption due to techniques Emacs uses to recover
86 * Editing Changes in Emacs 25.2
89 * Changes in Specialized Modes and Packages in Emacs 25.2
94 *** A new `s' command for switching to another eww buffer via the minibuffer.
97 *** The `o' command (`shr-save-contents') has moved to `O' to avoid collision
98 with the `o' command from `image-map'.
101 ** The commands that add ChangeLog entries now prefer a VCS root directory
102 for the ChangeLog file, if none already exists. Customize
103 `change-log-directory-files' to nil for the old behavior.
106 ** Support for non-string values of `time-stamp-format' has been removed.
111 *** New connection method "sg", which allows to edit files under
115 *** New connection method "doas" for OpenBSD hosts.
118 ** `auto-revert-use-notify' is set back to t in `global-auto-revert-mode'.
121 * New Modes and Packages in Emacs 25.2
124 * Incompatible Lisp Changes in Emacs 25.2
127 ** Resizing a frame no longer runs `window-configuration-change-hook'.
128 Put your function on `window-size-change-functions' instead.
131 * Lisp Changes in Emacs 25.2
133 ** New var syntax-ppss-table to control the syntax-table used in syntax-ppss
135 ** Autoload files can be generated without timestamps,
136 by setting `autoload-timestamps' to nil.
137 FIXME As an experiment, nil is the current default.
138 If no insurmountable problems before next release, it can stay that way.
140 ** `ert-with-function-mocked' of 'ert-x package allows mocking of functions
144 ** New functions `window-pixel-width-before-size-change' and
145 `window-pixel-height-before-size-change' allow to detect which window
146 changed size when `window-size-change-functions' are run.
149 * Changes in Emacs 25.2 on Non-Free Operating Systems
151 ** Intercepting hotkeys on Windows 7 and later now works better.
152 The new keyboard hooking code properly grabs system hotkeys such as
153 Win-* and Alt-TAB, in a way that Emacs can get at them before the
154 system. This makes the `w32-register-hot-key' functionality work
155 again on all versions of MS-Windows starting with Windows 7. On
156 Windows NT and later you can now register any hotkey combination. (On
157 Windows 9X, the previous limitations, spelled out in the Emacs manual,
161 * Installation Changes in Emacs 25.1
164 ** Building Emacs now requires C99 or later.
167 ** Building Emacs now requires GNU make, version 3.81 or later.
170 ** New configure option --with-cairo.
171 This builds Emacs with Cairo drawing. As a side effect, it provides
172 support for built-in printing, when Emacs was built with GTK+.
173 Cairo drawing is an experimental feature in Emacs, and subject to
174 change in future releases.
177 ** New configure option --with-modules.
178 This enables support for loading dynamic modules; see below.
181 ** By default, Emacs no longer works on IRIX. We expect that Emacs
182 users are not affected by this, as SGI stopped supporting IRIX in
183 December 2013. If you are affected, please send a bug report. You
184 should be able to work around the problem either by porting the Emacs
185 undumping code to GCC under IRIX, or by configuring --with-wide-int,
186 or by sticking with Emacs 24.4.
189 ** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
190 The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
191 since Emacs 24.4, and the other variants were undocumented and were
192 obstacles to maintenance and development. GC_MARK_STACK and its
193 related symbols have been removed from the C internals.
196 ** 'configure' now prefers gnustep-config when configuring GNUstep.
197 If gnustep-config is not available, the old heuristics are used.
200 ** 'configure' now prefers inotify to gfile for file notification,
201 unless gfile is explicitly requested via --with-file-notification='gfile'.
204 ** 'configure' detects the kqueue file notification library on *BSD
205 and Mac OS X machines.
208 ** The configure option '--with-pkg-config-prog' has been removed.
209 Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
212 ** The configure option '--with-mmdf' has been removed.
213 It was no longer useful, as it relied on libraries that are no longer
214 supported, and its presence led to confusion during configuration.
215 This affects only the 'movemail' utility; Emacs itself can still
216 process MMDF-format files as before.
219 ** The configure option '--enable-silent-rules' is now the default,
220 and silent rules are now quieter. To get the old behavior where
221 'make' chatters a lot, configure with '--disable-silent-rules' or
222 build with 'make V=1'.
225 ** The configure option '--with-gameuser' now allows you to specify a
226 group instead of a user if its argument is prefixed by ':' (a colon).
227 This will cause the game score files in ${localstatedir}/games/emacs
228 to be owned by that group, and the helper program for updating them to
229 be installed setgid. The option now defaults to the 'games' group.
232 ** The `grep-changelog' script (and its manual page) are no longer included.
233 It has no particular connection to Emacs and has not changed in years,
234 so if you want to use it, you can always take a copy from an older Emacs.
237 ** Emacs 25 comes with a new set of icons.
238 Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
239 The old Emacs logo icons are available as `emacs23.png' in the same location.
242 ** New make target `check-expensive' to run additional tests.
243 This includes all tests which run via "make check", plus additional
244 tests which take more time to perform.
247 * Startup Changes in Emacs 25.1
250 ** When Emacs is given a file as a command line argument and
251 `initial-buffer-choice' is non-nil, display both the file and
252 `initial-buffer-choice'. When Emacs is given more than one file and
253 `initial-buffer-choice' is non-nil, show `initial-buffer-choice'
254 and *Buffer List*. This makes Emacs convenient to use from the
255 command line when `initial-buffer-choice' is non-nil.
258 ** The value of ‘initial-scratch-message’ is now treated as a doc string
259 and can contain escape sequences for command keys, quotes, and the like.
262 * Changes in Emacs 25.1
265 ** Xwidgets: a new feature for embedding native widgets inside Emacs buffers.
266 If you have gtk3 and webkitgtk3 installed, and Emacs was built with
267 xwidget support, you can access the embedded webkit browser with `M-x
268 xwidget-webkit-browse-url'. This opens a new buffer with the embedded
269 browser. The buffer will have a new mode, `xwidget-webkit-mode'
270 (similar to `image-mode'), which supports the webkit widget.
273 *** New functions for xwidget-webkit mode `xwidget-webkit-insert-string',
274 `xwidget-webkit-adjust-size-dispatch', `xwidget-webkit-back',
275 `xwidget-webkit-browse-url', `xwidget-webkit-reload',
276 `xwidget-webkit-current-url', `xwidget-webkit-scroll-backward',
277 `xwidget-webkit-scroll-forward', `xwidget-webkit-scroll-down',
278 `xwidget-webkit-scroll-up'.
281 ** Emacs can now load shared/dynamic libraries (modules).
282 A dynamic Emacs module is a shared library that provides additional
283 functionality for use in Emacs Lisp programs, just like a package
284 written in Emacs Lisp would. The functions `load', `require',
285 `load-file', etc. were extended to load such modules, as they do with
286 Emacs Lisp packages. The new variable `module-file-suffix' holds the
287 system-dependent value of the file-name extension (`.so' on Posix
288 hosts) of the module files.
290 A module should export a C-callable function named
291 `emacs_module_init', which Emacs will call as part of the call to
292 `load' or `require' which loads the module. It should also export a
293 symbol named `plugin_is_GPL_compatible' to indicate that its code is
294 released under the GPL or compatible license; Emacs will refuse to
295 load modules that don't export such a symbol.
297 If a module needs to call Emacs functions, it should do so through the
298 API defined and documented in the header file `emacs-module.h'. Note
299 that any module that provides Lisp-callable functions will have to use
300 Emacs functions such as `fset' and `funcall', in order to register its
301 functions with the Emacs Lisp interpreter.
303 Modules can create `user-ptr' Lisp objects that embed pointers to C
304 struct's defined by the module. This is useful for keeping around
305 complex data structures created by a module, to be passed back to the
306 module's functions. User-ptr objects can also have associated
307 "finalizers" -- functions to be run when the object is GC'ed; this is
308 useful for freeing any resources allocated for the underlying data
309 structure, such as memory, open file descriptors, etc. A new
310 predicate `user-ptrp' returns non-nil if its argument is a `user-ptr'
313 Loadable modules in Emacs are an experimental feature, and subject to
314 change in future releases. For that reason, their support is disabled
315 by default, and must be enabled by using the `--with-modules' option
319 ** A second dir-local file (.dir-locals-2.el) is now accepted.
320 See the variable `dir-locals-file-2' for more information.
323 ** Network security (TLS/SSL certificate validity and the like) is
324 added via the new Network Security Manager (NSM) and controlled via
325 the `network-security-level' variable.
328 ** International domain names (IDNA) are now encoded via the new
329 puny.el library, so that one can visit web sites like
330 "http://méxico.icom.museum".
333 ** C-h l now also lists the commands that were run.
335 ** The new M-s M-w key binding uses eww to search the web for the
339 ** The new `timer-list' command lists all active timers in a buffer
340 where you can cancel them with the `c' command.
342 ** M-x suggests shorthands and ignores obsolete commands for completion.
343 ** x-select-enable-clipboard is renamed select-enable-clipboard.
344 x-select-enable-primary and renamed select-enable-primary.
345 Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
346 name it), with the proviso that on some systems (e.g. Windows)
347 select-enable-primary is ineffective since the system doesn't
348 have the equivalent of a primary selection.
351 ** New option `switch-to-buffer-in-dedicated-window' allows you to
352 customize how `switch-to-buffer' proceeds interactively when the
353 selected window is strongly dedicated to its buffer.
356 ** The option `even-window-heights' has been renamed to
357 `even-window-sizes' and now handles window widths as well.
360 ** New function `read-multiple-choice' use to prompt for
361 multiple-choice questions, with a handy way to display help texts.
364 ** terpri gets an optional arg ENSURE to conditionally output a newline.
367 ** `insert-register' now leaves point after the inserted text
368 when called interactively. A prefix argument toggles this behavior.
371 ** The new variable `term-file-aliases' replaces some files from lisp/term.
372 The function `tty-run-terminal-initialization' consults this variable
373 when deciding what terminal-specific initialization code to run.
376 ** New variable `system-configuration-features', listing some of the
377 main features that Emacs was compiled with. This is mainly intended
378 for use in Emacs bug reports.
381 ** A password is now hidden also when typed in batch mode. Another
382 hiding character but the default `.' can be used by let-binding the
383 variable `read-hide-char'.
386 ** New input methods: `tamil-dvorak' and `programmer-dvorak'.
389 * Editing Changes in Emacs 25.1
392 ** M-x suggests shorthands and ignores obsolete commands for completion.
397 *** Successive single-char deletions are collapsed in the undo-log just like
398 successive char insertions. Which commands invoke this behavior is
399 controlled by the new `undo-auto-amalgamate' function. See the node
400 "Undo" in the ELisp manual for more details.
403 *** The heuristic used to insert `undo-boundary' after each command
404 has changed, so that if a command causes changes in more than just the
405 current buffer, Emacs now calls `undo-boundary' in every buffer
406 affected by the command.
409 ** New command `comment-line' bound to `C-x C-;'.
411 ** New and improved facilities for inserting Unicode characters
414 *** Unicode names entered via C-x 8 RET now use substring completion by default.
417 *** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
418 € № ← → ↔ − ≈ ≠ ≤ ≥. As before, you can type C-x 8 C-h to list shorthands.
421 *** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”
422 as you type. See also the new variable ‘text-quoting-style’.
425 ** New minor mode global-eldoc-mode is enabled by default.
428 ** Emacs now uses "bracketed paste mode" on text terminals that support it.
429 Bracketed paste mode causes text terminals to wrap pasted text in special
430 escape sequences that allow Emacs to tell the difference between text
431 you type and text you paste from other applications. Emacs then
432 avoids interpreting each character in the pasted text as it does with
433 keyboard input, which results in a paste experience similar to that
434 under a window system, and significant performance improvements when
435 pasting large amounts of text.
437 Bracketed paste mode is disabled by default, so Emacs automatically
438 enables it at startup if the terminal supports it.
441 ** Emacs now supports the latest version of the UBA.
442 The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
443 was updated to support all the latest additions and changes introduced
444 in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
445 This includes full support for directional isolates and the
446 Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
450 ** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.
453 ** New buffer-local `electric-pair-local-mode'.
456 ** New variable `fast-but-imprecise-scrolling' inhibits
457 fontification during full screen scrolling operations, giving less
458 hesitant operation during auto-repeat of C-v, M-v at the cost of
459 possible inaccuracies in the end position.
462 ** New documentation command `describe-symbol'.
463 Works for functions, variables, faces, etc. It is bound to `C-h o' by
467 ** New function `custom-prompt-customize-unsaved-options' checks for
468 unsaved customizations and prompts user to customize (if found). It
469 is intended for adding to 'kill-emacs-query-functions'.
472 ** The old `C-x w' bindings in hi-lock-mode are officially deprecated
473 in favor of the global `M-s h' bindings introduced in Emacs-23.1.
474 They'll disappear soon.
477 ** New bindings for 'query-replace-map'.
478 `undo', undo the last replacement; bound to `u'.
479 `undo-all', undo all replacements; bound to `U'.
482 * Changes in Specialized Modes and Packages in Emacs 25.1
487 *** New command `checkdoc-package-keywords' checks if the
488 current package keywords are recognized. Set the new option
489 `checkdoc-package-keywords-flag' to non-nil to make
490 `checkdoc-current-buffer' call this function automatically.
493 *** New function `checkdoc-file' checks for style errors.
494 It's meant for use together with `compile':
495 emacs -batch --eval "(checkdoc-file \"subr.el\")"
500 *** The desktop format version has been upgraded from 206 to 208.
501 Although Emacs 25.1 can read a version 206 desktop, earlier Emacsen
502 cannot read a version 208 desktop. To upgrade your desktop file, you
503 must explicitly request the upgrade, by C-u M-x desktop-save. You are
504 recommended to do this as soon as you have firmly upgraded to Emacs
505 25.1 (or later). Should you ever need to downgrade your desktop file
506 to version 206, you can do this with C-u C-u M-x desktop-save.
509 ** New function `bookmark-set-no-overwrite' bound to C-x r M.
510 It raises an error if a bookmark of that name already exists,
511 unlike `bookmark-set' which silently updates an existing bookmark.
516 *** New user options `mm-html-inhibit-images' and `mm-html-blocked-images'
517 now control how mm-* functions fetch and display images in an HTML
518 message. Gnus still uses `gnus-inhibit-images' and `gnus-blocked-images'
519 for that purpose, i.e., binds mm-html- variables with those gnus-
520 variables, but other packages do not have to bind gnus- variables now.
523 *** `mm-inline-text-html-with-images' has been removed.
524 Use `mm-html-inhibit-images' instead. Note that the value is opposite
530 *** `imap-ssl-program' has been removed, and imap.el uses the internal
531 GnuTLS encryption functions if possible.
536 *** `json-pretty-print' and `json-pretty-print-buffer' now maintain
537 the ordering of object keys by default.
540 *** New commands `json-pretty-print-ordered' and
541 `json-pretty-print-buffer-ordered' pretty prints JSON objects with
542 object keys sorted alphabetically.
545 ** Prog mode has some support for multi-mode indentation.
546 This allows better indentation support in modes that support multiple
547 programming languages in the same buffer, like literate programming
548 environments or ANTLR programs with embedded Python code.
550 A major mode can provide indentation context for a sub-mode through
551 the `prog-indentation-context' variable. To support this, modes that
552 provide indentation should use `prog-widen' instead of `widen' and
553 `prog-first-column' instead of a literal zero. See the node
554 "Mode-Specific Indent" in the ELisp manual for more details.
556 ** Prettify Symbols mode
559 *** Prettify Symbols mode supports custom composition predicates. By
560 overriding the default `prettify-symbols-compose-predicate', modes can
561 specify in which contexts a symbol may be displayed as some Unicode
562 character. `prettify-symbols-default-compose-p' is the default which
563 is suitable for most programming languages such as C or Lisp (but not
567 *** Symbols can be unprettified while point is inside them.
568 New variable `prettify-symbols-unprettify-at-point' configures this.
570 ** Enhanced xterm support
573 *** The new variable `xterm-screen-extra-capabilities' for configuring xterm.
574 This variable tells Emacs which advanced capabilities are available in
575 the xterm terminal emulator used to display Emacs text-mode frames.
576 The default is to check each capability, and use it if available.
577 (This variable was introduced in Emacs 24.1, but was not announced in
581 *** Killing text now also sets the CLIPBOARD/PRIMARY selection
582 in the surrounding GUI (using the OSC-52 escape sequence). This only works
583 if your xterm supports it and enables the `allowWindowOps' options (disabled
584 by default at least in Debian, for security reasons).
586 Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
587 escape sequence) if your xterm has the feature enabled but for that you
588 additionally need to add `getSelection' to `xterm-extra-capabilities'.
591 *** `xterm-mouse-mode' now supports mouse-tracking (if your xterm supports it).
594 ** The way to turn on and off `save-place' mode has changed.
595 It is no longer sufficient to load the saveplace library and set
596 `save-place' non-nil. Instead, use the two new minor modes:
597 `save-place-mode' turns on saving last place in every file, and
598 `save-place-local-mode' does that only for the file in whose buffer it
599 is invoked. The `save-place' variable is now an obsolete alias for
600 `save-place-mode', which replaces it, and `toggle-save-place' is an
601 obsolete alias for the new `save-place-local-mode' command.
606 *** ERC can now hide message types by network or channel.
607 `erc-hide-list' will hide all messages of the specified type, while
608 `erc-network-hide-list' and `erc-channel-hide-list' will only hide the
609 specified message types for the respective specified targets.
611 *** New variable `erc-default-port-tls' used to connect to TLS IRC
615 *** Reconnection is now asynchronous.
618 *** Nick completion is now case-insensitive again after inadvertently
619 being made case-sensitive in Emacs 24.2.
624 *** New commands, key binds, and menu items.
626 **** `<' and `>' for navigating previous and next tracks in playlist
628 **** New play/pause command `mpc-toggle-play' bound to `s'
630 **** `g' bound to new command `mpc-seek-current' will navigate current
633 **** New commands `mpc-toggle-{consume,repeat,single,shuffle}' for
634 toggling playback modes.
637 *** Now supports connecting to a UNIX domain socket.
640 *** Looks at more image file names to use as album art.
641 Case-insensitively tries for .folder.png (freedesktop) and folder.jpg
642 (XP) in addition to cover.jpg.
645 *** Searches in more locations for MPD configuration files.
646 MPD supports the XDG base directory specification since version 0.17.6.
651 *** `midnight-mode' is now a proper minor mode.
654 *** clean-buffer-*-regexps can now specify buffers via predicate functions.
659 *** New "external" package status.
660 An external package is any installed package that's not built-in and
661 not from `package-user-dir', which usually means it's from an entry in
662 `package-directory-list'. They are treated much like built-in
663 packages, in that they cannot be deleted through the package menu and
664 are not considered for upgrades.
666 The effect is that a user can manually place a specific version of a
667 package inside `package-directory-list' and the package menu will
671 *** If a package is available on multiple archives and one has higher
672 priority (as per `package-archive-priorities') only that one is
673 listed. This can be configured with `package-menu-hide-low-priority'.
676 *** `package-menu-toggle-hiding' now toggles the hiding of packages.
677 This includes the above-mentioned low-priority packages, as well as
678 available packages whose version is lower than the currently installed
679 version (which were previously impossible to display).
680 This allows users to downgrade a package if a lower version is
684 *** When filtering the package menu, keywords starting with "arc:" or
685 "status:" represent package archive or status, respectively, instead
689 *** Most functions which involve downloading information now take an
690 ASYNC argument. If it is non-nil, package.el performs the download(s)
694 *** New variable `package-menu-async' controls whether the
695 package-menu uses asynchronous downloads.
698 *** `package-install-from-buffer' and `package-install-file' work on directories.
699 This follows the same rules as installing from a .tar file, except the
700 -pkg file is optional.
703 *** Packages which are dependencies of other packages cannot be deleted.
704 The FORCE argument to `package-delete' overrides this.
707 *** New custom variable `package-selected-packages' tracks packages
708 which were installed by the user (as opposed to installed as
709 dependencies). This variable can also be manually customized.
712 *** New command `package-install-selected-packages' installs all
713 packages from `package-selected-packages' which are currently missing.
716 *** `package-install' function now takes a DONT-SELECT argument. If
717 this function is called interactively or if DONT-SELECT is nil, add the
718 package being installed to `package-selected-packages'.
721 *** New command `package-autoremove' removes all packages which were
722 installed strictly as dependencies but are no longer needed.
727 When you invoke `shell' interactively, the *shell* buffer will now
728 display in a new window. However, you can customize this behavior via
729 the `display-buffer-alist' variable. For example, to get
730 the old behavior -- *shell* buffer displays in current window -- use
731 (add-to-list 'display-buffer-alist
732 '("^\\*shell\\*$" . (display-buffer-same-window))).
736 *** The `:protection' slot option is not obeyed any more.
738 *** The `newname' argument to constructors is optional&deprecated.
739 If you need your objects to be named, do it by inheriting from `eieio-named'.
741 *** The <class>-list-p and <class>-child-p functions are declared obsolete.
743 *** The <class> variables are declared obsolete.
745 *** The <initarg> variables are declared obsolete.
747 *** defgeneric and defmethod are declared obsolete.
748 Use the equivalent facilities from cl-generic.el instead.
750 *** `constructor' is now an obsolete alias for `make-instance'.
751 --- `pcase' accepts a new UPattern `eieio'.
756 *** New command `ido-bury-buffer-at-head' bound to C-S-b
757 Bury the buffer at the head of `ido-matches', analogous to how C-k
758 kills the buffer at head.
761 *** A prefix argument to `ido-restrict-to-matches' will reverse its
762 meaning, and the list is restricted to those elements that do not
763 match the current input.
768 *** You can use <UP> and <DOWN> arrow keys to move through history by lines.
769 The new commands `next-line-or-history-element' and
770 `previous-line-or-history-element', bound to <UP> and <DOWN> in the
771 minibuffer, allow by-line movement through minibuffer history,
772 similarly to an ordinary buffer. Only when point moves over
773 the bottom/top of the minibuffer it goes to the next/previous history
774 element. `M-p' and `M-n' still move directly to previous/next history
777 ** Search and Replace
780 *** `isearch' and `query-replace' can now perform character folding in matches.
781 Isearch does that by default, while `query-replace' will do that if
782 the new variable `replace-character-fold' is customized to a non-nil
783 value. This is analogous to case folding, but instead of disregarding
784 case variants, it disregards wider classes of distinctions between
785 similar characters. (Case folding is a special case of character
786 folding.) This means many characters in the search string will match
787 entire groups of characters instead of just themselves.
789 For instance, the " will match all variants of double quotes (like “
790 and ”), and the letter a will match all of its accented cousins, even
791 those composed of multiple characters, as well as many other symbols
794 Character folding is enabled by customizing `search-default-mode' to
795 the value `character-fold-to-regexp'. If you want to turn character
796 folding off, customize the value of `search-default-mode' to the `nil'
797 value. You can also toggle character folding in the middle of a
798 search by typing `M-s ''.
801 *** New user option `search-default-mode'.
802 This option specifies the default mode for Isearch. The default
803 value, `character-fold-to-regexp' specifies that Isearch should fold
804 characters when searching.
807 *** New function `character-fold-to-regexp' can be used
808 by searching commands to produce a regexp matching anything that
809 character-folds into STRING.
812 *** The new M-s M-w key binding uses eww to search the web for the
813 text in the region. The search engine to use for this is specified by
814 the customizable variable `eww-search-prefix'.
817 *** Query-replace history is enhanced.
818 When query-replace reads the FROM string from the minibuffer, typing
819 `M-p' will now show previous replacements as "FROM SEP TO", where FROM
820 and TO are the original text and its replacement, and SEP is an arrow
821 string defined by the new variable `query-replace-from-to-separator'.
822 To select a prior replacement, type `M-p' until the desired
823 replacement appears in the minibuffer, and then exit the minibuffer by
828 *** If `quick-calc' is called with a prefix argument, insert the
829 result of the calculation into the current buffer.
832 ** In Edebug, you can now set the initial mode with C-x C-a C-m. With
833 this you can tell Edebug not to stop at the start of the first
834 instrumented function.
839 *** New minor mode `global-eldoc-mode'
840 It is turned on by default, and affects `*scratch*' and other buffers
841 whose major mode supports Emacs Lisp.
844 *** `eldoc-documentation-function' now defaults to `ignore'
847 *** `describe-char-eldoc' displays information about character at point,
848 and can be used as a default value of `eldoc-documentation-function'. It is
849 useful when, for example, one needs to distinguish various spaces (e.g. ] [,
850 ] [, ] [, etc.) while using mono-spaced font.
855 *** HTML can now be rendered using variable-width fonts.
858 *** A new command `F' (`eww-toggle-fonts') can be used to toggle
859 whether to use variable-pitch fonts or not. The user can also
860 customize the `shr-use-fonts' variable.
863 *** A new command `C' (`eww-toggle-colors') can be used to toggle
864 whether to use the HTML-specified colors or not. The user can also
865 customize the `shr-use-colors' variable.
868 *** A new command `R' (`eww-readable') will try do identify the main
869 textual parts of a web page and display only that, leaving menus and
870 the like off the page.
873 *** A new command `D' (`eww-toggle-paragraph-direction') allows you to
874 toggle the paragraph direction between left-to-right and right-to-left.
877 *** Images that are being loaded are now marked with grey
878 "placeholder" images of the size specified by the HTML. They are then
879 replaced by the real images asynchronously, which will also now
880 respect width/height HTML specs (unless they specify widths/heights
881 bigger than the current window).
884 *** You can now use several eww buffers in parallel by renaming eww
885 buffers you want to keep separate.
888 *** Partial state of the eww buffers (the URIs and the titles of the
889 pages visited) is now preserved in the desktop file.
892 *** `eww-after-render-hook' is now called after eww has rendered
893 the data in the buffer.
896 *** The `eww-reload' command now takes a prefix to not reload via
897 the net, but just use the local copy of the HTML.
900 *** The DOM shr and eww uses has been changed to the general Emacs
901 xml.el/libxml2 DOM, and a new package dom.el has been added to
902 interact with this DOM. See the Emacs Lisp manual for interface
906 *** `mailcap-mime-data' is now consulted when displaying PDF files.
909 *** The new `S' command will list all eww buffers, and allow managing
913 *** https pages with valid certificates have headers marked in green, while
914 invalid certificates are marked in red.
919 *** text/html messages that contain inline image parts will be
920 transformed into multipart/related messages before sending.
923 *** The `message-valid-fqdn-regexp' variable has been removed, since
924 there are now top-level domains added all the time. Message will no
925 longer warn about sending emails to top-level domains it hasn't heard
928 *** `message-beginning-of-line' (bound to C-a) understands folded headers.
929 In `visual-line-mode' it will look for the true beginning of a header
930 while in non-`visual-line-mode' it will move the point to the indented
934 ** In Show Paren Mode, a parenthesis can be highlighted when point
935 stands inside it, and certain parens can be highlighted when point is
936 at BOL or EOL, or in whitespace there. To enable these, customize,
937 respectively, `show-paren-when-point-inside-paren' or
938 `show-paren-when-point-in-periphery'.
941 ** If gpg2 exists on the system, it is now used as the default value
942 of `epg-gpg-program' (instead of gpg).
947 *** Images are automatically scaled before displaying based on the
948 `image-scaling-factor' variable (if Emacs supports scaling the images
952 *** Images inserted with `insert-image' and related functions get a
953 keymap put into the text properties (or overlays) that span the
954 image. This keymap binds keystrokes for manipulating size and
955 rotation, as well as saving the image to a file. These commands are
956 also available in `image-mode'.
959 *** A new library for creating and manipulating SVG images has been
960 added. See the "SVG Images" section in the lispref manual for
964 *** New setf-able function to access and set image parameters is
965 provided: `image-property'.
971 *** Strings after `:documentation' are highlighted as docstrings.
972 This enhances Lisp mode fontification to handle documentation of the
973 form `(:documentation "the doc string")' used in Common Lisp code for
974 CLOS class and slot documentation.
979 *** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
982 *** C-x C-x in rectangle-mark-mode now cycles through the four corners.
983 *** `string-rectangle' provides on-the-fly preview of the result.
986 ** New font-lock functions `font-lock-ensure' and `font-lock-flush'.
987 These should be used in preference to `font-lock-fontify-buffer' when
991 ** Macro `minibuffer-with-setup-hook' can optionally append a function
992 to `minibuffer-setup-hook'.
994 If the first argument of the macro is of the form `(:append FUN)',
995 then FUN will be appended to `minibuffer-setup-hook', instead of
1000 *** New functions `cl-fresh-line', `cl-digit-char-p', and `cl-parse-integer'.
1003 *** `pcase' accepts the new UPattern `cl-struct'.
1005 ** Calendar and diary
1008 *** The default `diary-file' is now located in .emacs.d.
1011 *** New commands to insert diary entries with Chinese dates:
1012 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
1013 `diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
1016 *** The calendar can now list and mark diary entries with Chinese dates.
1017 See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
1020 *** The option `calendar-mode-line-format' can now be nil,
1021 which means to do nothing special with the mode line in calendars.
1024 *** New option `calendar-weekend-days'.
1025 The option customizes which day headers receive the
1026 `calendar-weekend-header' face.
1029 *** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.
1032 *** Many items obsolete since at least version 23.1 have been removed.
1033 The majority were function/variable/face aliases, too numerous to list here.
1036 **** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
1037 `calendar-two-frame-setup', `european-calendar', `american-calendar'.
1039 **** Hooks `cal-menu-load-hook', `cal-x-load-hook'.
1041 **** Macro `calendar-for-loop'.
1043 **** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
1045 **** The nil and list forms of `diary-display-function'.
1048 ** New ERT function `ert-summarize-tests-batch-and-exit'.
1049 If the output of ERT tests in batch mode execution can be saved to a
1050 log file, then it can be passed as an argument to the above function
1051 to produce a neat summary.
1054 ** New js.el option `js-indent-first-init'.
1055 It was renamed from `js-indent-first-initialiser', to avoid issues
1056 with American vs British spelling.
1061 ** Info mode now displays symbol names in fixed-pitch font.
1062 If you want to get the old behavior back, customize the `Info-quoted'
1063 face to use the same definitions as the default face.
1066 *** `Info-fontify-maximum-menu-size' can be t for no limit.
1069 *** `info-display-manual' can now be given a prefix argument which (any
1070 non-nil value) directs the command to limit the completion
1071 alternatives to currently visited manuals.
1074 ** ntlm.el has support for NTLM2.
1079 *** The Rmail commands `d', `C-d' and `u' take optional repeat counts
1080 to delete or undelete multiple messages.
1083 *** Rmail can now render HTML mail messages if your Emacs was built with
1084 libxml2 or if you have the Lynx browser installed. By default, Rmail
1085 will display the HTML version of a mail message that has both HTML and
1086 plain text parts, if display of HTML email is possible; customize the
1087 `rmail-mime-prefer-html' option to `nil' if you don't want that.
1090 *** In the commands that make summaries by subject, recipients, or senders,
1091 you can no longer use commas to separate regular expressions.
1094 ** SES now supports local printer functions; see `ses-define-local-printer'.
1096 ** Shell-script Mode
1098 *** In sh-mode you can now use `sh-shell' as a file-local variable to
1099 specify the type of shell in use (bash, csh, etc).
1102 *** New value `always' for `sh-indent-after-continuation'.
1103 This provides old-style ("dumb") indentation of continued lines.
1104 See the doc string of `sh-indent-after-continuation' for details.
1108 *** Fatal TLS errors are now silent by default.
1111 *** If Emacs isn't built with TLS support, an external TLS-capable
1112 program is used instead. This program used to be run in --insecure
1113 mode by default, but has now changed to be secure instead, and will
1114 fail if you try to connect to non-verifiable hosts. This is
1115 controlled by the `tls-program' variable.
1120 *** The URL package accepts now the protocols "ssh", "scp" and "rsync".
1121 When `url-handler-mode' is enabled, file operations for these
1122 protocols as well as for "telnet" and "ftp" are passed to Tramp.
1125 *** The URL package allows customizing the `url-user-agent' string.
1126 The new `url-user-agent' variable can be customized to be a string or
1130 *** The new interface variable `url-request-noninteractive' can be used
1131 to specify that we're running in a noninteractive context, and that
1132 we should not be queried about things like TLS certificate validity.
1135 *** `url-mime-accept-string' can now be used as in "interface"
1136 variable, meaning you can bind it around an `url-retrieve' call.
1139 *** If URL is used with a https connection, the first callback argument
1140 plist will contain a :peer element that has the output of
1141 `gnutls-peer-status' (if Emacs is built with GnuTLS support).
1144 *** The new function `url-cookie-delete-cookie' can be used to
1145 programmatically delete all cookies, or cookies from a specific
1151 *** New connection method "afp", which allows you to access Mac OS X
1152 volumes via the Apple Filing Protocol.
1155 *** New connection method "nc", which allows you to access dumb
1159 *** Method-specific parameters can be overwritten now with variable
1160 `tramp-connection-properties'.
1163 *** Handler for `file-notify-valid-p' for remote machines that support
1164 filesystem notifications.
1169 *** New user variable `sql-default-directory' enables remote
1170 connections using Tramp.
1173 *** New command `sql-send-line-and-next'.
1174 This command, bound to `C-c C-n' by default, sends the current line to
1175 the SQL process and advances to the next line, skipping whitespace and
1179 *** Added support for Vertica SQL.
1181 ** VC and related modes
1184 *** Basic push support, via `vc-push', bound to `C-x v P'.
1185 Implemented for Bzr, Git, Hg. As part of this change, the pre-existing
1186 (undocumented) command vc-hg-push now behaves slightly differently.
1189 *** The new command vc-region-history shows the log+diff of the active region.
1192 *** You can refresh the VC state of a file buffer with `M-x vc-refresh-state'.
1193 This command is useful when you perform version control commands
1194 outside Emacs (e.g., from the shell prompt), or if you switch the VC
1195 back-end for the buffer's file, or remove it from version control.
1198 *** The VC state indicator in the mode line now defaults to more
1199 colorful faces to make it more obvious to the user what the state is.
1200 See the `vc-faces' customization group.
1203 *** New option `vc-annotate-background-mode' controls whether
1204 the color range from `vc-annotate-color-map' is applied to the
1205 background or to the foreground.
1208 *** `compare-windows' now compares text with the most recently selected window
1209 instead of the next window. If you want the previous behavior of
1210 comparing with the next window, customize the new option
1211 `compare-windows-get-window-function' to the value
1212 `compare-windows-get-next-window'.
1215 *** Two new faces `compare-windows-removed' and `compare-windows-added'
1216 replace the face `compare-windows', which is now an obsolete alias for
1217 `compare-windows-added'.
1220 *** The VC state indicator in the mode line now has different faces
1221 corresponding to each of the possible states. See the `vc-faces'
1222 customization group.
1225 *** `log-edit-insert-changelog' converts "(tiny change)" to
1226 "Copyright-paperwork-exempt: yes". Set `log-edit-rewrite-tiny-change'
1227 nil to disable this.
1230 ** VHDL mode now supports VHDL'08.
1235 *** Decimal display mode uses "," groups, so it's more
1236 fitting for use in money calculations
1239 *** Factorial works with non-integer inputs.
1244 *** Hide-IfDef mode now support full C/C++ expressions in macros,
1245 macro argument expansion, interactive macro evaluation and automatic
1246 scanning of #define'd symbols.
1249 *** New command `hif-evaluate-macro', bound to `C-c @ e', displays the
1250 result of evaluating a macro.
1253 *** New command `hif-clear-all-ifdef-define', bound to `C-c @ C', clears
1254 all defined symbols in `hide-ifdef-env'.
1257 *** New custom variable `hide-ifdef-header-regexp' to define C/C++ header
1258 file name patterns. Defaults to files whose extension is one of `.h',
1259 `.hh', `.hpp', `.hxx', or `.h++', matched case-insensitively.
1262 *** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
1263 reinclusion protected (a.k.a. "idempotent") header files from being hidden.
1264 (This could happen when an idempotent header file is visited again,
1265 when its guard symbol is already defined.) Defaults to `t'.
1268 *** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
1269 name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be ignored when
1270 looking for macro definitions. By default, no symbols are ignored.
1275 *** New custom variable `tex-print-file-extension' to help users who
1276 use PDF instead of DVI.
1279 *** TeX mode now supports Prettify Symbols mode. When enabling
1280 `prettify-symbols-mode' in a tex-mode buffer, \alpha ... \omega, and
1281 many other math macros are displayed using unicode characters.
1284 ** New `big-indent' style in `whitespace-mode' highlights deep indentation.
1285 By default, 32 consecutive spaces or four consecutive TABs are
1286 considered to be too deep, but the new variable
1287 `whitespace-big-indent-regexp' can be customized to change that.
1290 ** New options in `tildify-mode'.
1291 New options `tildify-space-string', `tildify-pattern', and
1292 `tildify-foreach-region-function' variables make
1293 `tildify-string-alist', `tildify-pattern-alist', and
1294 `tildify-ignored-environments-alist' variables (as well as a few
1295 helper functions) obsolete.
1298 ** New package Xref replaces Etags's front-end and UI
1300 The new package Xref provides a generic framework and new commands to
1301 find and move to definitions of functions, macros, data structures
1302 etc., as well as go back to the location where you were before moving
1303 to a definition. It supersedes and obsoletes many Etags commands,
1304 while still using the etags.el code that reads the TAGS tables as one
1307 The command `xref-find-definitions' replaces `find-tag' and provides
1308 an interface to pick one definition among several.
1309 `tags-loop-continue' is now unbound. `xref-pop-marker-stack' replaces
1310 `pop-tag-mark', but has a keybinding (`M-,') different from the one
1311 `pop-tag-mark' used.
1313 `xref-find-definitions-other-window' replaces `find-tag-other-window'.
1314 `xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
1315 `xref-find-apropos' replaces `find-tag-regexp'.
1317 As a result of this, the following commands are now obsolete:
1318 `find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
1321 `tags-loop-continue' is not obsolete because it's still useful in
1322 `tags-search' and `tags-query-replace', for which there are no direct
1326 *** Variants of `tags-search' and `tags-query-replace' in Dired were also
1327 replaced by xref-style commands, see the "Dired" section below.
1332 `find-tag-marker-ring-length' is now an obsolete alias for
1333 `xref-marker-ring-length'. `find-tag-marker-ring' is now an obsolete
1334 alias for a private variable. `xref-push-marker-stack' and
1335 `xref-pop-marker-stack' should be used instead to manipulate the stack
1336 of searches for definitions.
1339 *** `xref-find-definitions' and `describe-function' now display
1340 information about mode local overrides (defined by cedet/mode-local.el
1341 `define-overloadable-function' `define-mode-local-overrides').
1343 The framework's Lisp API is still experimental and can change in major,
1344 backward-incompatible ways.
1347 ** New package Project
1349 The new package Project provides generic infrastructure for dealing
1350 with projects. The main commands included in it are
1351 `project-find-file' and `project-find-regexp'.
1353 The Lisp API of this package is still experimental.
1356 EUDC's LDAP backend has been improved.
1359 *** EUDC supports LDAP-over-SSL URLs (ldaps://).
1362 *** EUDC passes LDAP passwords through a pipe to the ldapsearch
1363 subprocess instead of on the command line.
1366 *** EUDC handles LDAP wildcards automatically so the user shouldn't
1367 need to configure this manually anymore.
1370 *** The LDAP configuration section of EUDC's manual has been
1373 There have also been customization changes.
1376 *** New custom variable `eudc-server-hotlist' to allow specifying
1377 multiple EUDC servers in init file.
1380 *** Custom variable `eudc-inline-query-format' defaults to completing
1381 on email and firstname instead of surname.
1384 *** Custom variable `eudc-expansion-overwrites-query' defaults to nil
1385 to avoid interfering with the kill ring.
1388 *** Custom variable `eudc-inline-expansion-format' defaults to
1389 "Firstname Surname <mail-address>".
1392 *** Custom variable `eudc-options-file' defaults to
1393 "~/.emacs.d/eudc-options".
1396 *** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
1397 allow overriding the regular expression that recognizes the ldapsearch
1398 command line's password prompt.
1401 EUDC's BBDB backend now supports BBDB 3.
1404 EUDC's PH backend (eudcb-ph.el) is obsolete.
1409 *** The new built-in command `clear' can scroll window contents out of sight.
1410 If provided with an optional non-nil argument, the scrollback contents will be cleared.
1413 *** New buffer syntax '#<buffer-name>', which is equivalent to
1414 '#<buffer buffer-name>'. This shorthand makes interacting with
1415 buffers from eshell more convenient. Custom variable
1416 `eshell-buffer-shorthand', which has been broken for a while, has been
1420 *** By default, eshell "visual" program buffers (created by
1421 `eshell-visual-commands' and similar custom vars) are no longer killed
1422 when their processes die. This fixes issues with short-lived commands
1423 and makes visual programs more useful in general. For example, if
1424 "git log" is a visual command, it will always show the visual command
1425 buffer, even if the "git log" process dies. For the old behavior,
1426 make the new option `eshell-destroy-buffer-when-process-dies' non-nil.
1431 *** Support for the Google Chrome web browser.
1434 *** Support for the Conkeror web browser.
1437 *** Support for several ancient browsers is now officially obsolete.
1440 ** tar-mode: new `tar-new-entry' command, allowing for new members to
1441 be added to the archive.
1446 *** Dired buffers are also auto-reverted via file notifications, if
1447 Emacs is compiled with file notification support.
1450 *** `auto-revert-use-notify' is set to nil in `global-auto-revert-mode'.
1451 See <http://debbugs.gnu.org/22814>.
1453 ** File Notifications
1456 *** The kqueue library is integrated for *BSD and Mac OS X machines.
1459 *** The new event `stopped' signals, that a file notification watch is
1460 not active any longer.
1463 *** The new function `file-notify-valid-p' checks, whether a file
1464 notification descriptor still corresponds to an activate watch.
1469 *** The command `dired-do-compress' bound to `Z' now can compress
1470 directories and decompress zip files.
1473 *** New command `dired-do-compress-to' bound to `c' can be used to
1474 compress many marked files into a single named archive. The
1475 compression command is determined from the new
1476 `dired-compress-files-alist' variable.
1479 *** In wdired, when editing files to contain slash characters,
1480 the resulting directories are automatically created. Whether
1481 to do this or not is controlled by the
1482 `wdired-create-parent-directories' variable.
1485 *** `W' is now bound to `browse-url-of-dired-file', and is useful for
1486 viewing HTML files and the like.
1488 *** New user interface for the `A' and `Q' commands.
1489 These keys, now bound to `dired-do-find-regexp' and
1490 `dired-do-find-regexp-and-replace', work similarly to `xref-find-apropos'
1491 and `xref-query-replace-in-results': they present the matches
1492 in the `*xref*' buffer and let you move through the matches. No need
1493 to use `tags-loop-continue' to resume the search or replace loop. The
1494 previous commands, `dired-do-search' and
1495 `dired-do-query-replace-regexp', are still available, but not bound to
1496 keys; rebind `A' and `Q' to invoke them if you want the old behavior
1497 back. We intend to obsolete the old commands in a future release.
1499 ** Tabulated List Mode
1502 *** It is now safe for a mode that derives `tabulated-list-mode' to not
1503 call `tabulated-list-init-header', in which case it will have no
1507 *** `tabulated-list-print' takes a second optional argument, update,
1508 which specifies an alternative printing method which is faster when
1509 few or no entries have changed.
1511 ** Obsolete packages
1517 *** landmark.el (moved to elpa.gnu.org)
1520 * New Modes and Packages in Emacs 25.1
1523 ** pinentry.el allows GnuPG passphrase to be prompted through the
1524 minibuffer instead of a graphical dialog, depending on whether the gpg
1525 command is called from Emacs (i.e., INSIDE_EMACS environment variable
1526 is set). This feature requires newer versions of GnuPG (2.1.5 or
1527 later) and Pinentry (0.9.5 or later). To use this feature, add
1528 "allow-emacs-pinentry" to "~/.gnupg/gpg-agent.conf" and reload the
1529 configuration with "gpgconf --reload gpg-agent".
1532 ** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
1533 The main entry points are `cl-defgeneric' and `cl-defmethod'. See the
1534 node "Generic Functions" in the Emacs Lisp manual for more details.
1537 ** scss-mode (a minor variant of css-mode) is a major mode for editing
1538 SCSS (Sassy CSS) files.
1541 ** let-alist is a new macro (and a package) that allows one to easily
1542 let-bind the values stored in an alist.
1545 ** `tildify-mode' allows automatic insertion of hard spaces as one
1546 types the text. Breaking line after a single-character words is
1547 forbidden by Czech and Polish typography (and may be discouraged in
1548 other languages), so `auto-tildify-mode' makes it easier to create
1549 a typographically-correct documents.
1552 ** The `seq' library adds sequence manipulation functions and macros
1553 that complement basic functions provided by subr.el. All functions
1554 are prefixed with `seq-' and work on lists, strings and vectors.
1555 `pcase' accepts a new Upattern `seq'.
1558 ** The `map' library provides map-manipulation functions that work on
1559 alists, hash-table and arrays. All functions are prefixed with
1560 `map-'. `pcase' accepts a new UPattern `map'.
1563 ** The `thunk' library provides functions and macros to control the
1564 evaluation of forms.
1567 ** js-jsx-mode (a minor variant of js-mode) provides indentation
1568 support for JSX, an XML-like syntax extension to ECMAScript.
1571 * Incompatible Lisp Changes in Emacs 25.1
1574 ** `setq' and `setf' must now be called with an even number of
1575 arguments. The earlier behavior of silently supplying a nil to the
1576 last variable when there was an odd number of arguments has been
1580 ** `syntax-begin-function' is declared obsolete.
1581 Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
1582 slot in font-lock-defaults.
1585 ** `package-initialize' now sets `package-enable-at-startup' to nil if
1586 called during startup. Users who call this function in their init
1587 file and still expect it to be run after startup should set
1588 `package-enable-at-startup' to t after the call to
1589 `package-initialize'.
1592 ** `:global' minor mode use `setq-default' rather than `setq'.
1593 This means that you can't use `make-local-variable' and expect them to
1594 "magically" become buffer-local.
1597 ** `track-mouse' no longer freezes the shape of the mouse pointer.
1598 The `track-mouse' form no longer refrains from changing the shape of
1599 the mouse pointer for the entire time the body of that form is
1600 executed. Lisp programs that use `track-mouse' for dragging across
1601 large portions of the Emacs display, and want to avoid changes in the
1602 pointer shape during dragging, should bind the variable `track-mouse'
1603 to the special value `dragging' in the body of the form.
1606 ** The optional `predicate' argument of `lisp-complete-symbol' no longer
1607 has any effect. (This change was made in Emacs 24.4 but was not
1608 advertised at the time.)
1611 ** `indirect-function' does not signal `void-function' any more.
1612 This is mostly a bug-fix, since this change was missed back in 24.4 when
1613 symbol-function was changed not to signal `void-function' any more.
1616 *** As a consequence, the second arg of `indirect-function' is now obsolete.
1619 ** Comint, term, and compile do not set the EMACS env var any more.
1620 Use the INSIDE_EMACS environment variable instead.
1622 ** `C-up', `C-down', `C-left' and `C-right' are now defined in term
1623 mode to send the same escape sequences that xterm does. This makes
1624 things like forward-word in readline work.
1627 ** hideshow mode got four key bindings that are analogous to outline
1628 mode bindings: `C-c @ C-a', `C-c @ C-t', `C-c @ C-d', and `C-c @ C-e.'
1631 ** `save-excursion' does not save&restore the mark any more.
1632 Use `save-mark-and-excursion' if you want the old behavior.
1635 ** `read-buffer' and `read-buffer-function' can now be called with a 4th
1636 argument (`predicate').
1639 ** `completion-table-dynamic' by default stays in the minibuffer.
1640 The minibuffer will be the current buffer when the function is called.
1641 If you want the old behavior of calling the function in the buffer
1642 from which the minibuffer was entered, use the new argument
1643 `switch-buffer' to `completion-table-dynamic'.
1646 ** window-configurations no longer record the buffers' marks.
1649 ** inhibit-modification-hooks now also inhibits lock-file checks, as well as
1650 active region handling.
1653 ** deactivate-mark is now buffer-local.
1656 ** `cl-the' now asserts that its argument is of the given type.
1659 ** `process-running-child-p' may now return a numeric process
1660 group ID instead of `t'.
1663 ** Mouse click events on mode line or header line no longer include
1664 any reference to a buffer position. The 6th member of the mouse
1665 position list returned for such events is now nil.
1668 ** Menu items in keymaps do not support the "key shortcut cache" any more.
1669 These slots used to hold key-shortcut data, but have been obsolete since
1673 ** Emacs no longer downcases the first letter of a system diagnostic
1674 when signaling a file error. For example, it now reports "Permission
1675 denied" instead of "permission denied". The old behavior was problematic
1676 in languages like German where downcasing rules depend on grammar.
1679 ** New variable ‘text-quoting-style’ to control how Emacs translates quotes.
1680 Set it to ‘curve’ for curved single quotes ‘like this’, to ‘straight’
1681 for straight apostrophes 'like this', and to ‘grave’ for grave accent
1682 and apostrophe `like this'. The default value nil acts like ‘curve’
1683 if curved single quotes are displayable, and like ‘grave’ otherwise.
1684 The new variable affects display of diagnostics and help, but not of info.
1687 ** substitute-command-keys now replaces quotes.
1688 That is, it converts documentation strings’ quoting style as per the
1689 value of ‘text-quoting-style’. Doc strings in source code can use
1690 either curved single quotes or grave accents and apostrophes. As
1691 before, characters preceded by \= are output as-is.
1694 ** Message-issuing functions ‘error’, ‘message’, etc. now convert quotes.
1695 They use the new ‘format-message’ function instead of plain ‘format’,
1696 so that they now follow user preference as per ‘text-quoting-style’
1697 when processing curved single quotes, grave accents, and apostrophes
1698 in their format argument.
1701 ** The character classes [:alpha:] and [:alnum:] in regular expressions
1702 now match multibyte characters using Unicode character properties.
1703 If you want the old behavior where they matched any character with
1704 word syntax, use `\sw' instead.
1707 ** The character classes [:graph:] and [:print:] in regular expressions
1708 no longer match every multibyte character. Instead, Emacs now
1709 consults the Unicode character properties to determine which
1710 characters are graphic or printable. In particular, surrogates and
1711 unassigned codepoints are now rejected. If you want the old behavior,
1712 use [:multibyte:] instead.
1715 ** The `diff' command uses the unified format now. To restore the old
1716 behavior, set `diff-switches' to `-c'.
1719 ** `grep-template' and `grep-find-template' values don't include the
1720 --color argument anymore. It's added at the <C> place holder position
1721 dynamically. Any third-party code that changes these templates should
1722 be updated accordingly.
1724 ** The grep/rgrep/lgrep functions will now ask about saving files
1725 before running. This is controlled by the `grep-save-buffers'
1729 ** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
1730 The new behavior is compatible with Common Lisp and with XEmacs.
1731 This change does not affect Lisp code intended to be portable to
1732 Emacs 24.2 and earlier, which did not support unary ‘/’.
1735 ** The `default-directory' value doesn't have to end slash. To make
1736 that happen, `unhandled-file-name-directory' now defaults to calling
1737 `file-name-as-directory'.
1740 * Lisp Changes in Emacs 25.1
1744 *** New UPatterns `quote', `app'.
1746 *** New UPatterns can be defined with `pcase-defmacro'.
1748 *** New vector QPattern.
1751 ** syntax-propertize is now automatically called on-demand during forward
1752 parsing functions like `forward-sexp'.
1755 ** New hooks `prefix-command-echo-keystrokes-functions' and
1756 `prefix-command-preserve-state-hook' allow the definition of prefix
1757 commands other than the predefined `C-u'.
1760 ** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
1761 These allow conversion between buffer positions and the corresponding
1762 file byte offsets, given the file's encoding.
1765 ** The default value of `load-read-function' is now `read'.
1766 Previously, the default value of `nil' implied using `read'.
1769 ** New hook `pre-redisplay-functions'.
1770 It is a bit easier to use than `pre-redisplay-function'.
1773 ** The second arg of `looking-back' should always be provided explicitly.
1774 Previously, it was an optional argument, now it's mandatory.
1777 ** Text properties `intangible', `point-entered', and `point-left' are obsolete.
1778 Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
1779 implemented by the new `cursor-intangible-mode' and
1780 `cursor-sensor-mode' minor modes.
1783 ** `inhibit-point-motion-hooks' now defaults to `t' and is obsolete.
1784 Use the new minor modes `cursor-intangible-mode' and
1785 `cursor-sensor-mode' instead.
1788 ** New process type `pipe', which can be used in combination with the
1789 `:stderr' keyword of make-process to handle standard error output
1793 ** New function `make-process' provides an alternative interface to
1794 `start-process'. It allows programs to set process parameters such as
1795 process filter, sentinel, etc., through keyword arguments (similar to
1796 `make-network-process').
1799 ** A new function `directory-files-recursively' returns all matching
1800 files (recursively) under a directory.
1803 ** New variable `inhibit-message', when bound to non-nil, inhibits
1804 `message' and related functions from displaying messages in the echo
1805 area. The output is still logged to the *Messages* buffer.
1808 ** A new text property `inhibit-read-only' can be used in read-only
1809 buffers to allow certain parts of the text to be writable.
1812 ** A new variable `comment-end-can-be-escaped' is useful in languages
1813 such as C and C++ where line comments with escaped newlines are
1814 continued to the next line.
1817 ** New macro `define-advice'.
1820 ** Emacs Lisp now supports generators.
1821 See the "Generators" section of the ELisp manual for the details.
1824 ** New finalizer facility for running code when objects become unreachable.
1825 See the "Finalizer Type" subsection in the ELisp manual for the
1829 ** lexical closures can use (:documentation FORM) to build their docstring.
1830 It should be placed right where the docstring would be, and FORM is then
1831 evaluated (and should return a string) when the closure is built.
1834 ** The new command `fortune-message' has been added, which displays
1835 fortunes in the echo area.
1838 ** define-inline provides a new way to define inlinable functions.
1841 ** New function `macroexpand-1' to perform a single step of macro expansion.
1844 ** Some "x-*" functions were obsoleted and/or renamed:
1845 *** x-select-text is renamed gui-select-text.
1846 *** x-selection-value is renamed gui-selection-value.
1847 *** x-get-selection is renamed gui-get-selection.
1848 *** x-get-clipboard and x-clipboard-yank are marked obsolete.
1849 *** x-get-selection-value is renamed to gui-get-primary-selection.
1850 *** x-set-selection is renamed to gui-set-selection
1853 ** New function `string-greaterp', which return the opposite result of
1857 ** The new functions `string-collate-lessp' and `string-collate-equalp'
1858 preserve the collation order as defined by the system's locale(1)
1859 environment. For the time being this is implemented for modern POSIX
1860 systems and for MS-Windows, for other systems they fall back to their
1861 counterparts `string-lessp' and `string-equal'.
1864 ** The new function `string-version-lessp' compares strings by
1865 interpreting consecutive runs of numerical characters as numbers, and
1866 compares their numerical values. According to this predicate,
1867 "foo2.png" is smaller than "foo12.png".
1870 *** The ls-lisp package uses `string-collate-lessp' to sort file names.
1871 The effect is that, on systems that use ls-lisp for Dired, the default
1872 sort order of the files in Dired is now different from what it was in
1873 previous versions of Emacs. In particular, the file names are sorted
1874 disregarding punctuation, accents, and diacritics, and letter case is
1875 ignored. For example, files whose name begin with a period will no
1876 longer appear near the beginning of the directory listing. If you
1877 want the old, locale-independent sorting, customize the new option
1878 `ls-lisp-use-string-collate' to the nil value.
1881 *** The MS-Windows specific variable `w32-collate-ignore-punctuation',
1882 if set to a non-nil value, causes the above 2 functions to ignore
1883 symbol and punctuation characters when collating strings. This
1884 emulates the behavior of modern Posix platforms when the locale's
1885 codeset is "UTF-8" (as in "en_US.UTF-8"). This is needed because
1886 MS-Windows doesn't support UTF-8 as codeset in its locales.
1889 ** New function `alist-get', which is also a valid place (aka lvalue).
1892 ** New function `funcall-interactively', which works like `funcall'
1893 but makes `called-interactively-p' treat the function as (you guessed it)
1894 called interactively.
1897 ** New function `function-put' to use instead of `put' for function properties.
1900 ** The new function `bidi-find-overridden-directionality' allows you to
1901 find characters whose directionality was, perhaps maliciously,
1902 overridden by directional override control characters. Lisp programs
1903 can use this to detect potential phishing of URLs and other links that
1904 exploits bidirectional display reordering.
1907 ** The new function `buffer-substring-with-bidi-context' allows you to
1908 copy a portion of a buffer into a different location while preserving
1909 the visual appearance both of the copied text and the text at
1910 destination, even when the copied text includes mixed bidirectional
1911 text and directional control characters.
1914 ** New properties that can be specified with `declare':
1915 *** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
1916 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
1917 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
1921 ** New macro `with-file-modes', for evaluating expressions with default file
1922 permissions set to temporary values (e.g., for creating private files).
1925 ** You can access the slots of structures using `cl-struct-slot-value'.
1928 ** Function `sort' can deal with vectors.
1931 ** Function `system-name' now returns an updated value if the current
1932 system's name has changed or if the Emacs process has changed systems,
1933 and to avoid long waits it no longer consults DNS to canonicalize the
1934 name. The variable `system-name' is now obsolete.
1937 ** Function `write-region' no longer outputs "Wrote FILE" in batch mode.
1940 ** If `pwd' is called with a prefix argument, insert the current default
1944 ** New functions return extended information about fonts and faces.
1947 *** The function `font-info' now returns more details about a font.
1948 In particular, it now returns the average width of the font's
1949 characters, which can be used for geometry-related calculations.
1952 *** A new function `default-font-width' returns the average width of a
1953 character in the current buffer's default font. If the default face
1954 is remapped (see `face-remapping-alist'), the value for the remapped
1955 face is returned. This function complements the existing function
1956 `default-font-height'.
1959 *** New functions `window-font-height' and `window-font-width' return
1960 the height and average width of characters in a specified face and
1961 window. If FACE is remapped (see `face-remapping-alist'), the
1962 function returns the information for the remapped face.
1965 *** A new function `window-max-chars-per-line' returns the maximal
1966 number of characters that can be displayed on one line. If a face
1967 and/or window are provided, these values are used for the
1968 calculation. This function is different from `window-body-width' in
1969 that it accounts for (i) continuation glyphs, (ii) the size of the
1970 font, and (iii) the specified window.
1973 ** New utilities in subr-x.el:
1974 *** New macros `if-let' and `when-let' allow defining bindings and to
1975 execute code depending whether all values are true.
1976 *** New macros `thread-first' and `thread-last' allow threading a form
1977 as the first or last argument of subsequent forms.
1980 ** Documentation strings now support quoting with curved single quotes
1981 ‘like-this’ in addition to the old style with grave accent and
1982 apostrophe `like-this'. The new style looks better on today's displays.
1983 In the new Electric Quote mode, you can enter curved single quotes
1984 into documentation by typing ` and '. Outside Electric Quote mode,
1985 you can enter them by typing ‘C-x 8 [’ and ‘C-x 8 ]’, or (if your Alt
1986 key works) by typing ‘A-[’ and ‘A-]’. As described above under
1987 ‘text-quoting-style’, the user can specify how to display doc string
1991 ** New function ‘format-message’ is like ‘format’ and also converts
1992 curved single quotes, grave accents and apostrophes as per
1993 ‘text-quoting-style’.
1996 ** show-help-function's arg is converted via substitute-command-keys
1997 before being passed to the function. Help strings, help-echo
1998 properties, etc. can therefore contain command key escapes and
2002 ** Time-related changes:
2004 *** Time conversion functions now accept an optional ZONE argument
2005 that specifies the time zone rules for conversion. ZONE is omitted or
2006 nil for Emacs local time, t for Universal Time, ‘wall’ for system wall
2007 clock time, or a string as in ‘set-time-zone-rule’ for a time zone
2008 rule. The affected functions are ‘current-time-string’,
2009 ‘current-time-zone’, ‘decode-time’, and ‘format-time-string’. The
2010 function ‘encode-time’, which already accepted a simple time zone rule
2011 argument, has been extended to accept all the new forms.
2013 *** Time-related functions now consistently accept numbers
2014 (representing seconds since the epoch) and nil (representing the
2015 current time) as well as the usual list-of-integer representation.
2016 Affected functions include `current-time-string', `current-time-zone',
2017 `decode-time', `float-time', `format-time-string', `seconds-to-time',
2018 `time-add', `time-less-p', `time-subtract', `time-to-day-in-year',
2019 `time-to-days', and `time-to-seconds'.
2021 *** The `encode-time-value' and `with-decoded-time-value' macros have
2024 *** `calendar-next-time-zone-transition', `time-add', and
2025 `time-subtract' no longer return time values in the obsolete and
2026 undocumented integer-pair format. Instead, they return a list of two
2030 ** New function `set-binary-mode' allows switching a standard stream
2031 of the Emacs process to binary I/O mode.
2034 ** The new function `directory-name-p' can be used to check whether a file
2035 name (as returned from, for instance, `file-name-all-completions') is
2036 a directory file name. It returns non-nil if the last character in
2037 the name is a directory separator character (forward slash on GNU and
2038 Unix systems, forward- or backslash on MS-Windows and MS-DOS).
2041 ** ASCII approximations to curved quotes are put in standard-display-table
2042 if the terminal cannot display curved quotes.
2045 ** Standard output and error streams now transliterate characters via
2046 standard-display-table, and encode output using locale-coding-system.
2047 To force a specific encoding, bind `coding-system-for-write' to the
2048 coding-system of your choice when invoking functions like `prin1' and
2052 ** New var `truncate-string-ellipsis' to choose how to indicate truncation.
2055 ** New possible value for `system-type': `nacl'.
2056 This is used by Google's Native Client (NaCl).
2059 ** `read-color' will now display the color names using the color itself
2060 as the background color.
2063 ** There is now a new variable `flyspell-sort-corrections-function'
2064 that allows changing the way corrections are sorted.
2066 ** Miscellaneous name change
2069 For consistency with the usual Emacs spelling, the Lisp variable
2070 `hfy-optimisations' has been renamed to `hfy-optimizations'.
2071 The old name should still work, as an obsolescent alias.
2073 ** Changes in Frame- and Window- Handling
2076 *** Emacs can now draw horizontal scroll bars on some platforms that
2077 provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
2078 Horizontal scroll bars are turned off by default.
2080 **** New function `horizontal-scroll-bars-available-p' telling whether
2081 horizontal scroll bars are available on the underlying system.
2083 **** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
2084 bars on all existing and future frames.
2086 **** New function `toggle-horizontal-scroll-bar' to toggle horizontal
2087 scroll bars on the selected frame.
2089 **** New frame parameters `horizontal-scroll-bars' and
2090 `scroll-bar-height' to set horizontal scroll bars and their height
2091 for individual frames and in `default-frame-alist'.
2093 **** New functions `frame-scroll-bar-height' and
2094 `window-scroll-bar-height' return the height of horizontal scroll
2095 bars on a specific frame or window.
2097 **** `set-window-scroll-bars' now accepts five parameters where the last
2098 two specify height and type of the window's horizontal scroll bar.
2100 **** `window-scroll-bars' now returns type and sizes of horizontal scroll
2103 **** New buffer-local variables `horizontal-scroll-bar' and
2104 `scroll-bar-height'.
2107 *** New functions `frame-geometry' and `frame-edges' give access to a
2111 *** New functions `mouse-absolute-pixel-position' and
2112 `set-mouse-absolute-pixel-position' get/set screen coordinates of the
2116 *** The function `window-edges' now accepts three additional arguments to
2117 retrieve body, absolute and pixel edges of the window.
2120 *** The functions `window-inside-edges', `window-inside-pixel-edges' and
2121 `window-inside-absolute-pixel-edges' have been renamed to respectively
2122 `window-body-edges', `window-body-pixel-edges' and
2123 `window-absolute-body-pixel-edges'. The old names are kept as aliases.
2126 *** New function `window-absolute-pixel-position' to get the screen
2127 coordinates of a visible buffer position.
2130 *** The height of a frame's menu and tool bar are no longer counted in the
2131 frame's text height. This means that the text height stands only for
2132 the height of the frame's root window plus that of the echo area (if
2133 present). This was already the behavior for frames with external tool
2134 and menu bars (like in the Gtk builds) but has now been extended to all
2138 *** Frames now do not necessarily preserve the number of columns or lines
2139 they display when setting default font, menu bar, fringe width, or
2140 scroll bars. In particular, maximized and fullscreen frames are
2141 conceptually never resized if such settings change. For fullheight and
2142 fullwidth frames, the behavior may depend on the toolkit used.
2143 **** New option `frame-inhibit-implied-resize' if non-nil, means that
2144 setting default font, menu bar, fringe width, or scroll bars of a
2145 specific frame does not resize that frame in order to preserve the
2146 number of columns or lines it displays.
2149 *** New function `window-preserve-size' allows you to preserve the size of
2150 a window without "fixing" it. It's supported by `fit-window-to-buffer',
2151 `temp-buffer-resize-mode' and `display-buffer'.
2154 *** New `display-buffer' action function `display-buffer-use-some-frame'.
2155 This displays the buffer in an existing frame other than the current
2156 frame, and allows the caller to specify a frame predicate to exclude
2160 *** New minor mode `window-divider-mode' and options
2161 `window-divider-default-places', `window-divider-default-bottom-width'
2162 and `window-divider-default-right-width'.
2165 ** Tearoff menus and detachable toolbars for Gtk+ have been removed.
2166 Those features have been deprecated in Gtk+ for a long time.
2171 *** etags no longer qualifies class members by default.
2173 By default, `etags' will not qualify class members for C-like
2174 object-oriented languages with their class names and namespaces, and
2175 will remove qualifications used explicitly in the code from the tag
2176 names it puts in TAGS files. This is so the etags.el back-end for
2177 `xref-find-definitions' is more accurate and produces less false
2180 Use --class-qualify (-Q) if you want the old default behavior of
2181 qualifying class members in C++, Java, and Objective C. Note that
2182 using -Q might make some class members become "unknown" to `M-.'
2183 (`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
2184 qualified names by hand.
2187 *** New language Ruby
2189 Names of modules, classes, methods, functions, and constants are
2190 tagged. Overloaded operators are also tagged.
2194 Names of packages, functions, and types are tagged.
2197 *** Improved support for Lua
2199 Etags now tags functions even if the "function" keyword follows some
2200 whitespace at line beginning.
2203 * Changes in Emacs 25.1 on Non-Free Operating Systems
2206 ** MS-Windows specific Emacs build scripts are no longer in the distribution
2207 This includes the makefile.w32-in files in various subdirectories, and
2208 the support files. The file nt/configure.bat now just tells the user
2209 to use the procedure described in nt/INSTALL, by running the Posix
2210 `configure' script in the top-level directory.
2213 ** Building Emacs for MS-Windows requires at least Windows XP
2214 or Windows Server 2003. The built binaries still run on all versions
2215 of Windows starting with Windows 9X.
2218 ** Emacs running on MS-Windows now supports the daemon mode.
2221 ** The byte counts in etags-generated TAGS files are now the same on
2222 MS-Windows as they are on other platforms.
2225 ** On OS X, configure creates a Cocoa ("Nextstep") build by default.
2226 Pass '--without-ns' to configure to create an X11 build, the old default.
2229 ** OS X 10.5 or older is no longer supported.
2232 ** OS X on PowerPC is no longer supported.
2235 ** New variable `ns-use-fullscreen-animation' controls animation for
2236 non-native NS fullscreen. The default is nil. Set to t to enable
2237 animation when entering and leaving fullscreen. For native OSX fullscreen
2241 ** The new function 'w32-application-type' returns the type of an
2242 MS-Windows application given the name of its executable program file.
2244 ** New variable `w32-pipe-buffer-size'.
2245 It can be used to tune the size of the buffer of pipes created for
2246 communicating with subprocesses, when the program run by a subprocess
2247 exhibits unusual buffering behavior. Default is zero, which lets the
2248 OS use its default size.
2251 ----------------------------------------------------------------------
2252 This file is part of GNU Emacs.
2254 GNU Emacs is free software: you can redistribute it and/or modify
2255 it under the terms of the GNU General Public License as published by
2256 the Free Software Foundation, either version 3 of the License, or
2257 (at your option) any later version.
2259 GNU Emacs is distributed in the hope that it will be useful,
2260 but WITHOUT ANY WARRANTY; without even the implied warranty of
2261 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2262 GNU General Public License for more details.
2264 You should have received a copy of the GNU General Public License
2265 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2271 paragraph-separate: "[
\f]*$"