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 ** `parse-partial-sexp' state has a new element. Element 10 is
180 non-nil when the last character scanned might be the first character
181 of a two character construct, i.e. a comment delimiter or escaped
182 character. Its value is the syntax of that last character.
185 ** `parse-partial-sexp''s state, element 9, has now been confirmed as
186 permanent and documented, and may be used by Lisp programs. Its value
187 is a list of currently open parenthesis positions, starting with the
188 outermost parenthesis.
191 * Changes in Emacs 25.2 on Non-Free Operating Systems
193 ** Intercepting hotkeys on Windows 7 and later now works better.
194 The new keyboard hooking code properly grabs system hotkeys such as
195 Win-* and Alt-TAB, in a way that Emacs can get at them before the
196 system. This makes the `w32-register-hot-key' functionality work
197 again on all versions of MS-Windows starting with Windows 7. On
198 Windows NT and later you can now register any hotkey combination. (On
199 Windows 9X, the previous limitations, spelled out in the Emacs manual,
203 * Installation Changes in Emacs 25.1
206 ** Building Emacs now requires C99 or later.
209 ** Building Emacs now requires GNU make, version 3.81 or later.
212 ** New configure option --with-cairo.
213 This builds Emacs with Cairo drawing. As a side effect, it provides
214 support for built-in printing, when Emacs was built with GTK+.
215 Cairo drawing is an experimental feature in Emacs, and subject to
216 change in future releases.
219 ** New configure option --with-modules.
220 This enables support for loading dynamic modules; see below.
223 ** By default, Emacs no longer works on IRIX. We expect that Emacs
224 users are not affected by this, as SGI stopped supporting IRIX in
225 December 2013. If you are affected, please send a bug report. You
226 should be able to work around the problem either by porting the Emacs
227 undumping code to GCC under IRIX, or by configuring --with-wide-int,
228 or by sticking with Emacs 24.4.
231 ** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
232 The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
233 since Emacs 24.4, and the other variants were undocumented and were
234 obstacles to maintenance and development. GC_MARK_STACK and its
235 related symbols have been removed from the C internals.
238 ** 'configure' now prefers gnustep-config when configuring GNUstep.
239 If gnustep-config is not available, the old heuristics are used.
242 ** 'configure' now prefers inotify to gfile for file notification,
243 unless gfile is explicitly requested via --with-file-notification='gfile'.
246 ** 'configure' detects the kqueue file notification library on *BSD
247 and Mac OS X machines.
250 ** The configure option '--with-pkg-config-prog' has been removed.
251 Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
254 ** The configure option '--with-mmdf' has been removed.
255 It was no longer useful, as it relied on libraries that are no longer
256 supported, and its presence led to confusion during configuration.
257 This affects only the 'movemail' utility; Emacs itself can still
258 process MMDF-format files as before.
261 ** The configure option '--enable-silent-rules' is now the default,
262 and silent rules are now quieter. To get the old behavior where
263 'make' chatters a lot, configure with '--disable-silent-rules' or
264 build with 'make V=1'.
267 ** The configure option '--with-gameuser' now allows you to specify a
268 group instead of a user if its argument is prefixed by ':' (a colon).
269 This will cause the game score files in ${localstatedir}/games/emacs
270 to be owned by that group, and the helper program for updating them to
271 be installed setgid. The option now defaults to the 'games' group.
274 ** The `grep-changelog' script (and its manual page) are no longer included.
275 It has no particular connection to Emacs and has not changed in years,
276 so if you want to use it, you can always take a copy from an older Emacs.
279 ** Emacs 25 comes with a new set of icons.
280 Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
281 The old Emacs logo icons are available as `emacs23.png' in the same location.
284 ** New make target `check-expensive' to run additional tests.
285 This includes all tests which run via "make check", plus additional
286 tests which take more time to perform.
289 * Startup Changes in Emacs 25.1
292 ** When Emacs is given a file as a command line argument and
293 `initial-buffer-choice' is non-nil, display both the file and
294 `initial-buffer-choice'. When Emacs is given more than one file and
295 `initial-buffer-choice' is non-nil, show `initial-buffer-choice'
296 and *Buffer List*. This makes Emacs convenient to use from the
297 command line when `initial-buffer-choice' is non-nil.
300 ** The value of ‘initial-scratch-message’ is now treated as a doc string
301 and can contain escape sequences for command keys, quotes, and the like.
304 * Changes in Emacs 25.1
307 ** Xwidgets: a new feature for embedding native widgets inside Emacs buffers.
308 If you have gtk3 and webkitgtk3 installed, and Emacs was built with
309 xwidget support, you can access the embedded webkit browser with `M-x
310 xwidget-webkit-browse-url'. This opens a new buffer with the embedded
311 browser. The buffer will have a new mode, `xwidget-webkit-mode'
312 (similar to `image-mode'), which supports the webkit widget.
315 *** New functions for xwidget-webkit mode `xwidget-webkit-insert-string',
316 `xwidget-webkit-adjust-size-dispatch', `xwidget-webkit-back',
317 `xwidget-webkit-browse-url', `xwidget-webkit-reload',
318 `xwidget-webkit-current-url', `xwidget-webkit-scroll-backward',
319 `xwidget-webkit-scroll-forward', `xwidget-webkit-scroll-down',
320 `xwidget-webkit-scroll-up'.
323 ** Emacs can now load shared/dynamic libraries (modules).
324 A dynamic Emacs module is a shared library that provides additional
325 functionality for use in Emacs Lisp programs, just like a package
326 written in Emacs Lisp would. The functions `load', `require',
327 `load-file', etc. were extended to load such modules, as they do with
328 Emacs Lisp packages. The new variable `module-file-suffix' holds the
329 system-dependent value of the file-name extension (`.so' on Posix
330 hosts) of the module files.
332 A module should export a C-callable function named
333 `emacs_module_init', which Emacs will call as part of the call to
334 `load' or `require' which loads the module. It should also export a
335 symbol named `plugin_is_GPL_compatible' to indicate that its code is
336 released under the GPL or compatible license; Emacs will refuse to
337 load modules that don't export such a symbol.
339 If a module needs to call Emacs functions, it should do so through the
340 API defined and documented in the header file `emacs-module.h'. Note
341 that any module that provides Lisp-callable functions will have to use
342 Emacs functions such as `fset' and `funcall', in order to register its
343 functions with the Emacs Lisp interpreter.
345 Modules can create `user-ptr' Lisp objects that embed pointers to C
346 struct's defined by the module. This is useful for keeping around
347 complex data structures created by a module, to be passed back to the
348 module's functions. User-ptr objects can also have associated
349 "finalizers" -- functions to be run when the object is GC'ed; this is
350 useful for freeing any resources allocated for the underlying data
351 structure, such as memory, open file descriptors, etc. A new
352 predicate `user-ptrp' returns non-nil if its argument is a `user-ptr'
355 Loadable modules in Emacs are an experimental feature, and subject to
356 change in future releases. For that reason, their support is disabled
357 by default, and must be enabled by using the `--with-modules' option
361 ** A second dir-local file (.dir-locals-2.el) is now accepted.
362 See the variable `dir-locals-file-2' for more information.
365 ** Network security (TLS/SSL certificate validity and the like) is
366 added via the new Network Security Manager (NSM) and controlled via
367 the `network-security-level' variable.
370 ** International domain names (IDNA) are now encoded via the new
371 puny.el library, so that one can visit web sites like
372 "http://méxico.icom.museum".
375 ** C-h l now also lists the commands that were run.
377 ** The new M-s M-w key binding uses eww to search the web for the
381 ** The new `timer-list' command lists all active timers in a buffer
382 where you can cancel them with the `c' command.
384 ** M-x suggests shorthands and ignores obsolete commands for completion.
385 ** x-select-enable-clipboard is renamed select-enable-clipboard.
386 x-select-enable-primary and renamed select-enable-primary.
387 Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
388 name it), with the proviso that on some systems (e.g. Windows)
389 select-enable-primary is ineffective since the system doesn't
390 have the equivalent of a primary selection.
393 ** New option `switch-to-buffer-in-dedicated-window' allows you to
394 customize how `switch-to-buffer' proceeds interactively when the
395 selected window is strongly dedicated to its buffer.
398 ** The option `even-window-heights' has been renamed to
399 `even-window-sizes' and now handles window widths as well.
402 ** New function `read-multiple-choice' use to prompt for
403 multiple-choice questions, with a handy way to display help texts.
406 ** terpri gets an optional arg ENSURE to conditionally output a newline.
409 ** `insert-register' now leaves point after the inserted text
410 when called interactively. A prefix argument toggles this behavior.
413 ** The new variable `term-file-aliases' replaces some files from lisp/term.
414 The function `tty-run-terminal-initialization' consults this variable
415 when deciding what terminal-specific initialization code to run.
418 ** New variable `system-configuration-features', listing some of the
419 main features that Emacs was compiled with. This is mainly intended
420 for use in Emacs bug reports.
423 ** A password is now hidden also when typed in batch mode. Another
424 hiding character but the default `.' can be used by let-binding the
425 variable `read-hide-char'.
428 ** New input methods: `tamil-dvorak' and `programmer-dvorak'.
431 * Editing Changes in Emacs 25.1
434 ** M-x suggests shorthands and ignores obsolete commands for completion.
439 *** Successive single-char deletions are collapsed in the undo-log just like
440 successive char insertions. Which commands invoke this behavior is
441 controlled by the new `undo-auto-amalgamate' function. See the node
442 "Undo" in the ELisp manual for more details.
445 *** The heuristic used to insert `undo-boundary' after each command
446 has changed, so that if a command causes changes in more than just the
447 current buffer, Emacs now calls `undo-boundary' in every buffer
448 affected by the command.
451 ** New command `comment-line' bound to `C-x C-;'.
453 ** New and improved facilities for inserting Unicode characters
456 *** Unicode names entered via C-x 8 RET now use substring completion by default.
459 *** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
460 € № ← → ↔ − ≈ ≠ ≤ ≥. As before, you can type C-x 8 C-h to list shorthands.
463 *** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”
464 as you type. See also the new variable ‘text-quoting-style’.
467 ** New minor mode global-eldoc-mode is enabled by default.
470 ** Emacs now uses "bracketed paste mode" on text terminals that support it.
471 Bracketed paste mode causes text terminals to wrap pasted text in special
472 escape sequences that allow Emacs to tell the difference between text
473 you type and text you paste from other applications. Emacs then
474 avoids interpreting each character in the pasted text as it does with
475 keyboard input, which results in a paste experience similar to that
476 under a window system, and significant performance improvements when
477 pasting large amounts of text.
479 Bracketed paste mode is disabled by default, so Emacs automatically
480 enables it at startup if the terminal supports it.
483 ** Emacs now supports the latest version of the UBA.
484 The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
485 was updated to support all the latest additions and changes introduced
486 in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
487 This includes full support for directional isolates and the
488 Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
492 ** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.
495 ** New buffer-local `electric-pair-local-mode'.
498 ** New variable `fast-but-imprecise-scrolling' inhibits
499 fontification during full screen scrolling operations, giving less
500 hesitant operation during auto-repeat of C-v, M-v at the cost of
501 possible inaccuracies in the end position.
504 ** New documentation command `describe-symbol'.
505 Works for functions, variables, faces, etc. It is bound to `C-h o' by
509 ** New function `custom-prompt-customize-unsaved-options' checks for
510 unsaved customizations and prompts user to customize (if found). It
511 is intended for adding to 'kill-emacs-query-functions'.
514 ** The old `C-x w' bindings in hi-lock-mode are officially deprecated
515 in favor of the global `M-s h' bindings introduced in Emacs-23.1.
516 They'll disappear soon.
519 ** New bindings for 'query-replace-map'.
520 `undo', undo the last replacement; bound to `u'.
521 `undo-all', undo all replacements; bound to `U'.
524 * Changes in Specialized Modes and Packages in Emacs 25.1
529 *** New command `checkdoc-package-keywords' checks if the
530 current package keywords are recognized. Set the new option
531 `checkdoc-package-keywords-flag' to non-nil to make
532 `checkdoc-current-buffer' call this function automatically.
535 *** New function `checkdoc-file' checks for style errors.
536 It's meant for use together with `compile':
537 emacs -batch --eval "(checkdoc-file \"subr.el\")"
542 *** The desktop format version has been upgraded from 206 to 208.
543 Although Emacs 25.1 can read a version 206 desktop, earlier Emacsen
544 cannot read a version 208 desktop. To upgrade your desktop file, you
545 must explicitly request the upgrade, by C-u M-x desktop-save. You are
546 recommended to do this as soon as you have firmly upgraded to Emacs
547 25.1 (or later). Should you ever need to downgrade your desktop file
548 to version 206, you can do this with C-u C-u M-x desktop-save.
551 ** New function `bookmark-set-no-overwrite' bound to C-x r M.
552 It raises an error if a bookmark of that name already exists,
553 unlike `bookmark-set' which silently updates an existing bookmark.
558 *** New user options `mm-html-inhibit-images' and `mm-html-blocked-images'
559 now control how mm-* functions fetch and display images in an HTML
560 message. Gnus still uses `gnus-inhibit-images' and `gnus-blocked-images'
561 for that purpose, i.e., binds mm-html- variables with those gnus-
562 variables, but other packages do not have to bind gnus- variables now.
565 *** `mm-inline-text-html-with-images' has been removed.
566 Use `mm-html-inhibit-images' instead. Note that the value is opposite
572 *** `imap-ssl-program' has been removed, and imap.el uses the internal
573 GnuTLS encryption functions if possible.
578 *** `json-pretty-print' and `json-pretty-print-buffer' now maintain
579 the ordering of object keys by default.
582 *** New commands `json-pretty-print-ordered' and
583 `json-pretty-print-buffer-ordered' pretty prints JSON objects with
584 object keys sorted alphabetically.
587 ** Prog mode has some support for multi-mode indentation.
588 This allows better indentation support in modes that support multiple
589 programming languages in the same buffer, like literate programming
590 environments or ANTLR programs with embedded Python code.
592 A major mode can provide indentation context for a sub-mode through
593 the `prog-indentation-context' variable. To support this, modes that
594 provide indentation should use `prog-widen' instead of `widen' and
595 `prog-first-column' instead of a literal zero. See the node
596 "Mode-Specific Indent" in the ELisp manual for more details.
598 ** Prettify Symbols mode
601 *** Prettify Symbols mode supports custom composition predicates. By
602 overriding the default `prettify-symbols-compose-predicate', modes can
603 specify in which contexts a symbol may be displayed as some Unicode
604 character. `prettify-symbols-default-compose-p' is the default which
605 is suitable for most programming languages such as C or Lisp (but not
609 *** Symbols can be unprettified while point is inside them.
610 New variable `prettify-symbols-unprettify-at-point' configures this.
612 ** Enhanced xterm support
615 *** The new variable `xterm-screen-extra-capabilities' for configuring xterm.
616 This variable tells Emacs which advanced capabilities are available in
617 the xterm terminal emulator used to display Emacs text-mode frames.
618 The default is to check each capability, and use it if available.
619 (This variable was introduced in Emacs 24.1, but was not announced in
623 *** Killing text now also sets the CLIPBOARD/PRIMARY selection
624 in the surrounding GUI (using the OSC-52 escape sequence). This only works
625 if your xterm supports it and enables the `allowWindowOps' options (disabled
626 by default at least in Debian, for security reasons).
628 Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
629 escape sequence) if your xterm has the feature enabled but for that you
630 additionally need to add `getSelection' to `xterm-extra-capabilities'.
633 *** `xterm-mouse-mode' now supports mouse-tracking (if your xterm supports it).
636 ** The way to turn on and off `save-place' mode has changed.
637 It is no longer sufficient to load the saveplace library and set
638 `save-place' non-nil. Instead, use the two new minor modes:
639 `save-place-mode' turns on saving last place in every file, and
640 `save-place-local-mode' does that only for the file in whose buffer it
641 is invoked. The `save-place' variable is now an obsolete alias for
642 `save-place-mode', which replaces it, and `toggle-save-place' is an
643 obsolete alias for the new `save-place-local-mode' command.
648 *** ERC can now hide message types by network or channel.
649 `erc-hide-list' will hide all messages of the specified type, while
650 `erc-network-hide-list' and `erc-channel-hide-list' will only hide the
651 specified message types for the respective specified targets.
653 *** New variable `erc-default-port-tls' used to connect to TLS IRC
657 *** Reconnection is now asynchronous.
660 *** Nick completion is now case-insensitive again after inadvertently
661 being made case-sensitive in Emacs 24.2.
666 *** New commands, key binds, and menu items.
668 **** `<' and `>' for navigating previous and next tracks in playlist
670 **** New play/pause command `mpc-toggle-play' bound to `s'
672 **** `g' bound to new command `mpc-seek-current' will navigate current
675 **** New commands `mpc-toggle-{consume,repeat,single,shuffle}' for
676 toggling playback modes.
679 *** Now supports connecting to a UNIX domain socket.
682 *** Looks at more image file names to use as album art.
683 Case-insensitively tries for .folder.png (freedesktop) and folder.jpg
684 (XP) in addition to cover.jpg.
687 *** Searches in more locations for MPD configuration files.
688 MPD supports the XDG base directory specification since version 0.17.6.
693 *** `midnight-mode' is now a proper minor mode.
696 *** clean-buffer-*-regexps can now specify buffers via predicate functions.
701 *** New "external" package status.
702 An external package is any installed package that's not built-in and
703 not from `package-user-dir', which usually means it's from an entry in
704 `package-directory-list'. They are treated much like built-in
705 packages, in that they cannot be deleted through the package menu and
706 are not considered for upgrades.
708 The effect is that a user can manually place a specific version of a
709 package inside `package-directory-list' and the package menu will
713 *** If a package is available on multiple archives and one has higher
714 priority (as per `package-archive-priorities') only that one is
715 listed. This can be configured with `package-menu-hide-low-priority'.
718 *** `package-menu-toggle-hiding' now toggles the hiding of packages.
719 This includes the above-mentioned low-priority packages, as well as
720 available packages whose version is lower than the currently installed
721 version (which were previously impossible to display).
722 This allows users to downgrade a package if a lower version is
726 *** When filtering the package menu, keywords starting with "arc:" or
727 "status:" represent package archive or status, respectively, instead
731 *** Most functions which involve downloading information now take an
732 ASYNC argument. If it is non-nil, package.el performs the download(s)
736 *** New variable `package-menu-async' controls whether the
737 package-menu uses asynchronous downloads.
740 *** `package-install-from-buffer' and `package-install-file' work on directories.
741 This follows the same rules as installing from a .tar file, except the
742 -pkg file is optional.
745 *** Packages which are dependencies of other packages cannot be deleted.
746 The FORCE argument to `package-delete' overrides this.
749 *** New custom variable `package-selected-packages' tracks packages
750 which were installed by the user (as opposed to installed as
751 dependencies). This variable can also be manually customized.
754 *** New command `package-install-selected-packages' installs all
755 packages from `package-selected-packages' which are currently missing.
758 *** `package-install' function now takes a DONT-SELECT argument. If
759 this function is called interactively or if DONT-SELECT is nil, add the
760 package being installed to `package-selected-packages'.
763 *** New command `package-autoremove' removes all packages which were
764 installed strictly as dependencies but are no longer needed.
769 When you invoke `shell' interactively, the *shell* buffer will now
770 display in a new window. However, you can customize this behavior via
771 the `display-buffer-alist' variable. For example, to get
772 the old behavior -- *shell* buffer displays in current window -- use
773 (add-to-list 'display-buffer-alist
774 '("^\\*shell\\*$" . (display-buffer-same-window))).
778 *** The `:protection' slot option is not obeyed any more.
780 *** The `newname' argument to constructors is optional&deprecated.
781 If you need your objects to be named, do it by inheriting from `eieio-named'.
783 *** The <class>-list-p and <class>-child-p functions are declared obsolete.
785 *** The <class> variables are declared obsolete.
787 *** The <initarg> variables are declared obsolete.
789 *** defgeneric and defmethod are declared obsolete.
790 Use the equivalent facilities from cl-generic.el instead.
792 *** `constructor' is now an obsolete alias for `make-instance'.
793 --- `pcase' accepts a new UPattern `eieio'.
798 *** New command `ido-bury-buffer-at-head' bound to C-S-b
799 Bury the buffer at the head of `ido-matches', analogous to how C-k
800 kills the buffer at head.
803 *** A prefix argument to `ido-restrict-to-matches' will reverse its
804 meaning, and the list is restricted to those elements that do not
805 match the current input.
810 *** You can use <UP> and <DOWN> arrow keys to move through history by lines.
811 The new commands `next-line-or-history-element' and
812 `previous-line-or-history-element', bound to <UP> and <DOWN> in the
813 minibuffer, allow by-line movement through minibuffer history,
814 similarly to an ordinary buffer. Only when point moves over
815 the bottom/top of the minibuffer it goes to the next/previous history
816 element. `M-p' and `M-n' still move directly to previous/next history
819 ** Search and Replace
822 *** `isearch' and `query-replace' can now perform character folding in matches.
823 This is analogous to case folding, but instead of disregarding case
824 variants, it disregards wider classes of distinctions between similar
825 characters. (Case folding is a special case of character folding.)
826 This means many characters in the search string will match entire
827 groups of characters instead of just themselves.
829 For instance, the ASCII double quote character " will match all
830 variants of double quotes (like “ and ”), and the letter a will match
831 all of its accented cousins, even those composed of multiple
832 characters, as well as many other symbols like ℀, ℁, ⒜, and ⓐ.
834 Character folding is enabled by customizing `search-default-mode' to
835 the value `character-fold-to-regexp'. You can also toggle character
836 folding in the middle of a search by typing `M-s ''.
838 `query-replace' honors character folding if the new variable
839 `replace-character-fold' is customized to a non-nil value.
842 *** New user option `search-default-mode'.
843 This option specifies the default mode for Isearch. The default
844 value, nil specifies that Isearch does literal searches (however,
845 `case-fold-search' and `isearch-lax-whitespace' may still be applied,
846 as in previous Emacs versions).
849 *** New function `character-fold-to-regexp' can be used
850 by searching commands to produce a regexp matching anything that
851 character-folds into STRING.
854 *** The new M-s M-w key binding uses eww to search the web for the
855 text in the region. The search engine to use for this is specified by
856 the customizable variable `eww-search-prefix'.
859 *** Query-replace history is enhanced.
860 When query-replace reads the FROM string from the minibuffer, typing
861 `M-p' will now show previous replacements as "FROM SEP TO", where FROM
862 and TO are the original text and its replacement, and SEP is an arrow
863 string defined by the new variable `query-replace-from-to-separator'.
864 To select a prior replacement, type `M-p' until the desired
865 replacement appears in the minibuffer, and then exit the minibuffer by
870 *** If `quick-calc' is called with a prefix argument, insert the
871 result of the calculation into the current buffer.
874 ** In Edebug, you can now set the initial mode with C-x C-a C-m. With
875 this you can tell Edebug not to stop at the start of the first
876 instrumented function.
881 *** New minor mode `global-eldoc-mode'
882 It is turned on by default, and affects `*scratch*' and other buffers
883 whose major mode supports Emacs Lisp.
886 *** `eldoc-documentation-function' now defaults to `ignore'
889 *** `describe-char-eldoc' displays information about character at point,
890 and can be used as a default value of `eldoc-documentation-function'. It is
891 useful when, for example, one needs to distinguish various spaces (e.g. ] [,
892 ] [, ] [, etc.) while using mono-spaced font.
897 *** HTML can now be rendered using variable-width fonts.
900 *** A new command `F' (`eww-toggle-fonts') can be used to toggle
901 whether to use variable-pitch fonts or not. The user can also
902 customize the `shr-use-fonts' variable.
905 *** A new command `C' (`eww-toggle-colors') can be used to toggle
906 whether to use the HTML-specified colors or not. The user can also
907 customize the `shr-use-colors' variable.
910 *** A new command `R' (`eww-readable') will try do identify the main
911 textual parts of a web page and display only that, leaving menus and
912 the like off the page.
915 *** A new command `D' (`eww-toggle-paragraph-direction') allows you to
916 toggle the paragraph direction between left-to-right and right-to-left.
919 *** Images that are being loaded are now marked with grey
920 "placeholder" images of the size specified by the HTML. They are then
921 replaced by the real images asynchronously, which will also now
922 respect width/height HTML specs (unless they specify widths/heights
923 bigger than the current window).
926 *** You can now use several eww buffers in parallel by renaming eww
927 buffers you want to keep separate.
930 *** Partial state of the eww buffers (the URIs and the titles of the
931 pages visited) is now preserved in the desktop file.
934 *** `eww-after-render-hook' is now called after eww has rendered
935 the data in the buffer.
938 *** The `eww-reload' command now takes a prefix to not reload via
939 the net, but just use the local copy of the HTML.
942 *** The DOM shr and eww uses has been changed to the general Emacs
943 xml.el/libxml2 DOM, and a new package dom.el has been added to
944 interact with this DOM. See the Emacs Lisp manual for interface
948 *** `mailcap-mime-data' is now consulted when displaying PDF files.
951 *** The new `S' command will list all eww buffers, and allow managing
955 *** https pages with valid certificates have headers marked in green, while
956 invalid certificates are marked in red.
961 *** text/html messages that contain inline image parts will be
962 transformed into multipart/related messages before sending.
965 *** The `message-valid-fqdn-regexp' variable has been removed, since
966 there are now top-level domains added all the time. Message will no
967 longer warn about sending emails to top-level domains it hasn't heard
970 *** `message-beginning-of-line' (bound to C-a) understands folded headers.
971 In `visual-line-mode' it will look for the true beginning of a header
972 while in non-`visual-line-mode' it will move the point to the indented
976 ** In Show Paren Mode, a parenthesis can be highlighted when point
977 stands inside it, and certain parens can be highlighted when point is
978 at BOL or EOL, or in whitespace there. To enable these, customize,
979 respectively, `show-paren-when-point-inside-paren' or
980 `show-paren-when-point-in-periphery'.
983 ** If gpg2 exists on the system, it is now used as the default value
984 of `epg-gpg-program' (instead of gpg).
989 *** Images are automatically scaled before displaying based on the
990 `image-scaling-factor' variable (if Emacs supports scaling the images
994 *** Images inserted with `insert-image' and related functions get a
995 keymap put into the text properties (or overlays) that span the
996 image. This keymap binds keystrokes for manipulating size and
997 rotation, as well as saving the image to a file. These commands are
998 also available in `image-mode'.
1001 *** A new library for creating and manipulating SVG images has been
1002 added. See the "SVG Images" section in the lispref manual for
1006 *** New setf-able function to access and set image parameters is
1007 provided: `image-property'.
1013 *** Strings after `:documentation' are highlighted as docstrings.
1014 This enhances Lisp mode fontification to handle documentation of the
1015 form `(:documentation "the doc string")' used in Common Lisp code for
1016 CLOS class and slot documentation.
1018 ** Rectangle editing
1021 *** Rectangle Mark mode can have corners past EOL or in the middle of a TAB.
1024 *** C-x C-x in rectangle-mark-mode now cycles through the four corners.
1025 *** `string-rectangle' provides on-the-fly preview of the result.
1028 ** New font-lock functions `font-lock-ensure' and `font-lock-flush'.
1029 These should be used in preference to `font-lock-fontify-buffer' when
1033 ** Macro `minibuffer-with-setup-hook' can optionally append a function
1034 to `minibuffer-setup-hook'.
1036 If the first argument of the macro is of the form `(:append FUN)',
1037 then FUN will be appended to `minibuffer-setup-hook', instead of
1042 *** New functions `cl-fresh-line', `cl-digit-char-p', and `cl-parse-integer'.
1045 *** `pcase' accepts the new UPattern `cl-struct'.
1047 ** Calendar and diary
1050 *** The default `diary-file' is now located in .emacs.d.
1053 *** New commands to insert diary entries with Chinese dates:
1054 `diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
1055 `diary-chinese-insert-monthly-entry', `diary-chinese-insert-yearly-entry'.
1058 *** The calendar can now list and mark diary entries with Chinese dates.
1059 See `diary-chinese-list-entries' and `diary-chinese-mark-entries'.
1062 *** The option `calendar-mode-line-format' can now be nil,
1063 which means to do nothing special with the mode line in calendars.
1066 *** New option `calendar-weekend-days'.
1067 The option customizes which day headers receive the
1068 `calendar-weekend-header' face.
1071 *** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.
1074 *** Many items obsolete since at least version 23.1 have been removed.
1075 The majority were function/variable/face aliases, too numerous to list here.
1078 **** Functions `calendar-one-frame-setup', `calendar-only-one-frame-setup',
1079 `calendar-two-frame-setup', `european-calendar', `american-calendar'.
1081 **** Hooks `cal-menu-load-hook', `cal-x-load-hook'.
1083 **** Macro `calendar-for-loop'.
1085 **** Variables `european-calendar-style', `diary-face', `hebrew-holidays-{1,4}'.
1087 **** The nil and list forms of `diary-display-function'.
1090 ** New ERT function `ert-summarize-tests-batch-and-exit'.
1091 If the output of ERT tests in batch mode execution can be saved to a
1092 log file, then it can be passed as an argument to the above function
1093 to produce a neat summary.
1096 ** New js.el option `js-indent-first-init'.
1097 It was renamed from `js-indent-first-initialiser', to avoid issues
1098 with American vs British spelling.
1103 ** Info mode now displays symbol names in fixed-pitch font.
1104 If you want to get the old behavior back, customize the `Info-quoted'
1105 face to use the same definitions as the default face.
1108 *** `Info-fontify-maximum-menu-size' can be t for no limit.
1111 *** `info-display-manual' can now be given a prefix argument which (any
1112 non-nil value) directs the command to limit the completion
1113 alternatives to currently visited manuals.
1116 ** ntlm.el has support for NTLM2.
1121 *** The Rmail commands `d', `C-d' and `u' take optional repeat counts
1122 to delete or undelete multiple messages.
1125 *** Rmail can now render HTML mail messages if your Emacs was built with
1126 libxml2 or if you have the Lynx browser installed. By default, Rmail
1127 will display the HTML version of a mail message that has both HTML and
1128 plain text parts, if display of HTML email is possible; customize the
1129 `rmail-mime-prefer-html' option to `nil' if you don't want that.
1132 *** In the commands that make summaries by subject, recipients, or senders,
1133 you can no longer use commas to separate regular expressions.
1136 ** SES now supports local printer functions; see `ses-define-local-printer'.
1138 ** Shell-script Mode
1140 *** In sh-mode you can now use `sh-shell' as a file-local variable to
1141 specify the type of shell in use (bash, csh, etc).
1144 *** New value `always' for `sh-indent-after-continuation'.
1145 This provides old-style ("dumb") indentation of continued lines.
1146 See the doc string of `sh-indent-after-continuation' for details.
1150 *** Fatal TLS errors are now silent by default.
1153 *** If Emacs isn't built with TLS support, an external TLS-capable
1154 program is used instead. This program used to be run in --insecure
1155 mode by default, but has now changed to be secure instead, and will
1156 fail if you try to connect to non-verifiable hosts. This is
1157 controlled by the `tls-program' variable.
1162 *** The URL package accepts now the protocols "ssh", "scp" and "rsync".
1163 When `url-handler-mode' is enabled, file operations for these
1164 protocols as well as for "telnet" and "ftp" are passed to Tramp.
1167 *** The URL package allows customizing the `url-user-agent' string.
1168 The new `url-user-agent' variable can be customized to be a string or
1172 *** The new interface variable `url-request-noninteractive' can be used
1173 to specify that we're running in a noninteractive context, and that
1174 we should not be queried about things like TLS certificate validity.
1177 *** `url-mime-accept-string' can now be used as in "interface"
1178 variable, meaning you can bind it around an `url-retrieve' call.
1181 *** If URL is used with a https connection, the first callback argument
1182 plist will contain a :peer element that has the output of
1183 `gnutls-peer-status' (if Emacs is built with GnuTLS support).
1186 *** The new function `url-cookie-delete-cookie' can be used to
1187 programmatically delete all cookies, or cookies from a specific
1193 *** New connection method "afp", which allows you to access Mac OS X
1194 volumes via the Apple Filing Protocol.
1197 *** New connection method "nc", which allows you to access dumb
1201 *** Method-specific parameters can be overwritten now with variable
1202 `tramp-connection-properties'.
1205 *** Handler for `file-notify-valid-p' for remote machines that support
1206 filesystem notifications.
1211 *** New user variable `sql-default-directory' enables remote
1212 connections using Tramp.
1215 *** New command `sql-send-line-and-next'.
1216 This command, bound to `C-c C-n' by default, sends the current line to
1217 the SQL process and advances to the next line, skipping whitespace and
1221 *** Added support for Vertica SQL.
1223 ** VC and related modes
1226 *** Basic push support, via `vc-push', bound to `C-x v P'.
1227 Implemented for Bzr, Git, Hg. As part of this change, the pre-existing
1228 (undocumented) command vc-hg-push now behaves slightly differently.
1231 *** The new command vc-region-history shows the log+diff of the active region.
1234 *** You can refresh the VC state of a file buffer with `M-x vc-refresh-state'.
1235 This command is useful when you perform version control commands
1236 outside Emacs (e.g., from the shell prompt), or if you switch the VC
1237 back-end for the buffer's file, or remove it from version control.
1240 *** The VC state indicator in the mode line now defaults to more
1241 colorful faces to make it more obvious to the user what the state is.
1242 See the `vc-faces' customization group.
1245 *** New option `vc-annotate-background-mode' controls whether
1246 the color range from `vc-annotate-color-map' is applied to the
1247 background or to the foreground.
1250 *** `compare-windows' now compares text with the most recently selected window
1251 instead of the next window. If you want the previous behavior of
1252 comparing with the next window, customize the new option
1253 `compare-windows-get-window-function' to the value
1254 `compare-windows-get-next-window'.
1257 *** Two new faces `compare-windows-removed' and `compare-windows-added'
1258 replace the face `compare-windows', which is now an obsolete alias for
1259 `compare-windows-added'.
1262 *** The VC state indicator in the mode line now has different faces
1263 corresponding to each of the possible states. See the `vc-faces'
1264 customization group.
1267 *** `log-edit-insert-changelog' converts "(tiny change)" to
1268 "Copyright-paperwork-exempt: yes". Set `log-edit-rewrite-tiny-change'
1269 nil to disable this.
1272 ** VHDL mode now supports VHDL'08.
1277 *** Decimal display mode uses "," groups, so it's more
1278 fitting for use in money calculations
1281 *** Factorial works with non-integer inputs.
1286 *** Hide-IfDef mode now support full C/C++ expressions in macros,
1287 macro argument expansion, interactive macro evaluation and automatic
1288 scanning of #define'd symbols.
1291 *** New command `hif-evaluate-macro', bound to `C-c @ e', displays the
1292 result of evaluating a macro.
1295 *** New command `hif-clear-all-ifdef-define', bound to `C-c @ C', clears
1296 all defined symbols in `hide-ifdef-env'.
1299 *** New custom variable `hide-ifdef-header-regexp' to define C/C++ header
1300 file name patterns. Defaults to files whose extension is one of `.h',
1301 `.hh', `.hpp', `.hxx', or `.h++', matched case-insensitively.
1304 *** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
1305 reinclusion protected (a.k.a. "idempotent") header files from being hidden.
1306 (This could happen when an idempotent header file is visited again,
1307 when its guard symbol is already defined.) Defaults to `t'.
1310 *** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
1311 name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be ignored when
1312 looking for macro definitions. By default, no symbols are ignored.
1317 *** New custom variable `tex-print-file-extension' to help users who
1318 use PDF instead of DVI.
1321 *** TeX mode now supports Prettify Symbols mode. When enabling
1322 `prettify-symbols-mode' in a tex-mode buffer, \alpha ... \omega, and
1323 many other math macros are displayed using unicode characters.
1326 ** New `big-indent' style in `whitespace-mode' highlights deep indentation.
1327 By default, 32 consecutive spaces or four consecutive TABs are
1328 considered to be too deep, but the new variable
1329 `whitespace-big-indent-regexp' can be customized to change that.
1332 ** New options in `tildify-mode'.
1333 New options `tildify-space-string', `tildify-pattern', and
1334 `tildify-foreach-region-function' variables make
1335 `tildify-string-alist', `tildify-pattern-alist', and
1336 `tildify-ignored-environments-alist' variables (as well as a few
1337 helper functions) obsolete.
1340 ** New package Xref replaces Etags's front-end and UI
1342 The new package Xref provides a generic framework and new commands to
1343 find and move to definitions of functions, macros, data structures
1344 etc., as well as go back to the location where you were before moving
1345 to a definition. It supersedes and obsoletes many Etags commands,
1346 while still using the etags.el code that reads the TAGS tables as one
1349 The command `xref-find-definitions' replaces `find-tag' and provides
1350 an interface to pick one definition among several.
1351 `tags-loop-continue' is now unbound. `xref-pop-marker-stack' replaces
1352 `pop-tag-mark', but has a keybinding (`M-,') different from the one
1353 `pop-tag-mark' used.
1355 `xref-find-definitions-other-window' replaces `find-tag-other-window'.
1356 `xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
1357 `xref-find-apropos' replaces `find-tag-regexp'.
1359 As a result of this, the following commands are now obsolete:
1360 `find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
1363 `tags-loop-continue' is not obsolete because it's still useful in
1364 `tags-search' and `tags-query-replace', for which there are no direct
1368 *** Variants of `tags-search' and `tags-query-replace' in Dired were also
1369 replaced by xref-style commands, see the "Dired" section below.
1374 `find-tag-marker-ring-length' is now an obsolete alias for
1375 `xref-marker-ring-length'. `find-tag-marker-ring' is now an obsolete
1376 alias for a private variable. `xref-push-marker-stack' and
1377 `xref-pop-marker-stack' should be used instead to manipulate the stack
1378 of searches for definitions.
1381 *** `xref-find-definitions' and `describe-function' now display
1382 information about mode local overrides (defined by cedet/mode-local.el
1383 `define-overloadable-function' `define-mode-local-overrides').
1385 The framework's Lisp API is still experimental and can change in major,
1386 backward-incompatible ways.
1389 ** New package Project
1391 The new package Project provides generic infrastructure for dealing
1392 with projects. The main commands included in it are
1393 `project-find-file' and `project-find-regexp'.
1395 The Lisp API of this package is still experimental.
1398 EUDC's LDAP backend has been improved.
1401 *** EUDC supports LDAP-over-SSL URLs (ldaps://).
1404 *** EUDC passes LDAP passwords through a pipe to the ldapsearch
1405 subprocess instead of on the command line.
1408 *** EUDC handles LDAP wildcards automatically so the user shouldn't
1409 need to configure this manually anymore.
1412 *** The LDAP configuration section of EUDC's manual has been
1415 There have also been customization changes.
1418 *** New custom variable `eudc-server-hotlist' to allow specifying
1419 multiple EUDC servers in init file.
1422 *** Custom variable `eudc-inline-query-format' defaults to completing
1423 on email and firstname instead of surname.
1426 *** Custom variable `eudc-expansion-overwrites-query' defaults to nil
1427 to avoid interfering with the kill ring.
1430 *** Custom variable `eudc-inline-expansion-format' defaults to
1431 "Firstname Surname <mail-address>".
1434 *** Custom variable `eudc-options-file' defaults to
1435 "~/.emacs.d/eudc-options".
1438 *** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
1439 allow overriding the regular expression that recognizes the ldapsearch
1440 command line's password prompt.
1443 EUDC's BBDB backend now supports BBDB 3.
1446 EUDC's PH backend (eudcb-ph.el) is obsolete.
1451 *** The new built-in command `clear' can scroll window contents out of sight.
1452 If provided with an optional non-nil argument, the scrollback contents will be cleared.
1455 *** New buffer syntax '#<buffer-name>', which is equivalent to
1456 '#<buffer buffer-name>'. This shorthand makes interacting with
1457 buffers from eshell more convenient. Custom variable
1458 `eshell-buffer-shorthand', which has been broken for a while, has been
1462 *** By default, eshell "visual" program buffers (created by
1463 `eshell-visual-commands' and similar custom vars) are no longer killed
1464 when their processes die. This fixes issues with short-lived commands
1465 and makes visual programs more useful in general. For example, if
1466 "git log" is a visual command, it will always show the visual command
1467 buffer, even if the "git log" process dies. For the old behavior,
1468 make the new option `eshell-destroy-buffer-when-process-dies' non-nil.
1473 *** Support for the Google Chrome web browser.
1476 *** Support for the Conkeror web browser.
1479 *** Support for several ancient browsers is now officially obsolete.
1482 ** tar-mode: new `tar-new-entry' command, allowing for new members to
1483 be added to the archive.
1488 *** Dired buffers are also auto-reverted via file notifications, if
1489 Emacs is compiled with file notification support.
1492 *** `auto-revert-use-notify' is set to nil in `global-auto-revert-mode'.
1493 See <http://debbugs.gnu.org/22814>.
1495 ** File Notifications
1498 *** The kqueue library is integrated for *BSD and Mac OS X machines.
1501 *** The new event `stopped' signals, that a file notification watch is
1502 not active any longer.
1505 *** The new function `file-notify-valid-p' checks, whether a file
1506 notification descriptor still corresponds to an activate watch.
1511 *** The command `dired-do-compress' bound to `Z' now can compress
1512 directories and decompress zip files.
1515 *** New command `dired-do-compress-to' bound to `c' can be used to
1516 compress many marked files into a single named archive. The
1517 compression command is determined from the new
1518 `dired-compress-files-alist' variable.
1521 *** In wdired, when editing files to contain slash characters,
1522 the resulting directories are automatically created. Whether
1523 to do this or not is controlled by the
1524 `wdired-create-parent-directories' variable.
1527 *** `W' is now bound to `browse-url-of-dired-file', and is useful for
1528 viewing HTML files and the like.
1530 *** New user interface for the `A' and `Q' commands.
1531 These keys, now bound to `dired-do-find-regexp' and
1532 `dired-do-find-regexp-and-replace', work similarly to `xref-find-apropos'
1533 and `xref-query-replace-in-results': they present the matches
1534 in the `*xref*' buffer and let you move through the matches. No need
1535 to use `tags-loop-continue' to resume the search or replace loop. The
1536 previous commands, `dired-do-search' and
1537 `dired-do-query-replace-regexp', are still available, but not bound to
1538 keys; rebind `A' and `Q' to invoke them if you want the old behavior
1539 back. We intend to obsolete the old commands in a future release.
1541 ** Tabulated List Mode
1544 *** It is now safe for a mode that derives `tabulated-list-mode' to not
1545 call `tabulated-list-init-header', in which case it will have no
1549 *** `tabulated-list-print' takes a second optional argument, update,
1550 which specifies an alternative printing method which is faster when
1551 few or no entries have changed.
1553 ** Obsolete packages
1559 *** landmark.el (moved to elpa.gnu.org)
1562 * New Modes and Packages in Emacs 25.1
1565 ** pinentry.el allows GnuPG passphrase to be prompted through the
1566 minibuffer instead of a graphical dialog, depending on whether the gpg
1567 command is called from Emacs (i.e., INSIDE_EMACS environment variable
1568 is set). This feature requires newer versions of GnuPG (2.1.5 or
1569 later) and Pinentry (0.9.5 or later). To use this feature, add
1570 "allow-emacs-pinentry" to "~/.gnupg/gpg-agent.conf" and reload the
1571 configuration with "gpgconf --reload gpg-agent".
1574 ** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
1575 The main entry points are `cl-defgeneric' and `cl-defmethod'. See the
1576 node "Generic Functions" in the Emacs Lisp manual for more details.
1579 ** scss-mode (a minor variant of css-mode) is a major mode for editing
1580 SCSS (Sassy CSS) files.
1583 ** let-alist is a new macro (and a package) that allows one to easily
1584 let-bind the values stored in an alist.
1587 ** `tildify-mode' allows automatic insertion of hard spaces as one
1588 types the text. Breaking line after a single-character words is
1589 forbidden by Czech and Polish typography (and may be discouraged in
1590 other languages), so `auto-tildify-mode' makes it easier to create
1591 a typographically-correct documents.
1594 ** The `seq' library adds sequence manipulation functions and macros
1595 that complement basic functions provided by subr.el. All functions
1596 are prefixed with `seq-' and work on lists, strings and vectors.
1597 `pcase' accepts a new Upattern `seq'.
1600 ** The `map' library provides map-manipulation functions that work on
1601 alists, hash-table and arrays. All functions are prefixed with
1602 `map-'. `pcase' accepts a new UPattern `map'.
1605 ** The `thunk' library provides functions and macros to control the
1606 evaluation of forms.
1609 ** js-jsx-mode (a minor variant of js-mode) provides indentation
1610 support for JSX, an XML-like syntax extension to ECMAScript.
1613 * Incompatible Lisp Changes in Emacs 25.1
1616 ** `setq' and `setf' must now be called with an even number of
1617 arguments. The earlier behavior of silently supplying a nil to the
1618 last variable when there was an odd number of arguments has been
1622 ** `syntax-begin-function' is declared obsolete.
1623 Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
1624 slot in font-lock-defaults.
1627 ** `package-initialize' now sets `package-enable-at-startup' to nil if
1628 called during startup. Users who call this function in their init
1629 file and still expect it to be run after startup should set
1630 `package-enable-at-startup' to t after the call to
1631 `package-initialize'.
1634 ** `:global' minor mode use `setq-default' rather than `setq'.
1635 This means that you can't use `make-local-variable' and expect them to
1636 "magically" become buffer-local.
1639 ** `track-mouse' no longer freezes the shape of the mouse pointer.
1640 The `track-mouse' form no longer refrains from changing the shape of
1641 the mouse pointer for the entire time the body of that form is
1642 executed. Lisp programs that use `track-mouse' for dragging across
1643 large portions of the Emacs display, and want to avoid changes in the
1644 pointer shape during dragging, should bind the variable `track-mouse'
1645 to the special value `dragging' in the body of the form.
1648 ** The optional `predicate' argument of `lisp-complete-symbol' no longer
1649 has any effect. (This change was made in Emacs 24.4 but was not
1650 advertised at the time.)
1653 ** `indirect-function' does not signal `void-function' any more.
1654 This is mostly a bug-fix, since this change was missed back in 24.4 when
1655 symbol-function was changed not to signal `void-function' any more.
1658 *** As a consequence, the second arg of `indirect-function' is now obsolete.
1661 ** Comint, term, and compile do not set the EMACS env var any more.
1662 Use the INSIDE_EMACS environment variable instead.
1664 ** `C-up', `C-down', `C-left' and `C-right' are now defined in term
1665 mode to send the same escape sequences that xterm does. This makes
1666 things like forward-word in readline work.
1669 ** hideshow mode got four key bindings that are analogous to outline
1670 mode bindings: `C-c @ C-a', `C-c @ C-t', `C-c @ C-d', and `C-c @ C-e.'
1673 ** `save-excursion' does not save&restore the mark any more.
1674 Use `save-mark-and-excursion' if you want the old behavior.
1677 ** `read-buffer' and `read-buffer-function' can now be called with a 4th
1678 argument (`predicate').
1681 ** `completion-table-dynamic' by default stays in the minibuffer.
1682 The minibuffer will be the current buffer when the function is called.
1683 If you want the old behavior of calling the function in the buffer
1684 from which the minibuffer was entered, use the new argument
1685 `switch-buffer' to `completion-table-dynamic'.
1688 ** window-configurations no longer record the buffers' marks.
1691 ** inhibit-modification-hooks now also inhibits lock-file checks, as well as
1692 active region handling.
1695 ** deactivate-mark is now buffer-local.
1698 ** `cl-the' now asserts that its argument is of the given type.
1701 ** `process-running-child-p' may now return a numeric process
1702 group ID instead of `t'.
1705 ** Mouse click events on mode line or header line no longer include
1706 any reference to a buffer position. The 6th member of the mouse
1707 position list returned for such events is now nil.
1710 ** Menu items in keymaps do not support the "key shortcut cache" any more.
1711 These slots used to hold key-shortcut data, but have been obsolete since
1715 ** Emacs no longer downcases the first letter of a system diagnostic
1716 when signaling a file error. For example, it now reports "Permission
1717 denied" instead of "permission denied". The old behavior was problematic
1718 in languages like German where downcasing rules depend on grammar.
1721 ** New variable ‘text-quoting-style’ to control how Emacs translates quotes.
1722 Set it to ‘curve’ for curved single quotes ‘like this’, to ‘straight’
1723 for straight apostrophes 'like this', and to ‘grave’ for grave accent
1724 and apostrophe `like this'. The default value nil acts like ‘curve’
1725 if curved single quotes are displayable, and like ‘grave’ otherwise.
1726 The new variable affects display of diagnostics and help, but not of info.
1729 ** substitute-command-keys now replaces quotes.
1730 That is, it converts documentation strings’ quoting style as per the
1731 value of ‘text-quoting-style’. Doc strings in source code can use
1732 either curved single quotes or grave accents and apostrophes. As
1733 before, characters preceded by \= are output as-is.
1736 ** Message-issuing functions ‘error’, ‘message’, etc. now convert quotes.
1737 They use the new ‘format-message’ function instead of plain ‘format’,
1738 so that they now follow user preference as per ‘text-quoting-style’
1739 when processing curved single quotes, grave accents, and apostrophes
1740 in their format argument.
1743 ** The character classes [:alpha:] and [:alnum:] in regular expressions
1744 now match multibyte characters using Unicode character properties.
1745 If you want the old behavior where they matched any character with
1746 word syntax, use `\sw' instead.
1749 ** The character classes [:graph:] and [:print:] in regular expressions
1750 no longer match every multibyte character. Instead, Emacs now
1751 consults the Unicode character properties to determine which
1752 characters are graphic or printable. In particular, surrogates and
1753 unassigned codepoints are now rejected. If you want the old behavior,
1754 use [:multibyte:] instead.
1757 ** The `diff' command uses the unified format now. To restore the old
1758 behavior, set `diff-switches' to `-c'.
1761 ** `grep-template' and `grep-find-template' values don't include the
1762 --color argument anymore. It's added at the <C> place holder position
1763 dynamically. Any third-party code that changes these templates should
1764 be updated accordingly.
1766 ** The grep/rgrep/lgrep functions will now ask about saving files
1767 before running. This is controlled by the `grep-save-buffers'
1771 ** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
1772 The new behavior is compatible with Common Lisp and with XEmacs.
1773 This change does not affect Lisp code intended to be portable to
1774 Emacs 24.2 and earlier, which did not support unary ‘/’.
1777 ** The `default-directory' value doesn't have to end slash. To make
1778 that happen, `unhandled-file-name-directory' now defaults to calling
1779 `file-name-as-directory'.
1782 * Lisp Changes in Emacs 25.1
1786 *** New UPatterns `quote', `app'.
1788 *** New UPatterns can be defined with `pcase-defmacro'.
1790 *** New vector QPattern.
1793 ** syntax-propertize is now automatically called on-demand during forward
1794 parsing functions like `forward-sexp'.
1797 ** New hooks `prefix-command-echo-keystrokes-functions' and
1798 `prefix-command-preserve-state-hook' allow the definition of prefix
1799 commands other than the predefined `C-u'.
1802 ** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
1803 These allow conversion between buffer positions and the corresponding
1804 file byte offsets, given the file's encoding.
1807 ** The default value of `load-read-function' is now `read'.
1808 Previously, the default value of `nil' implied using `read'.
1811 ** New hook `pre-redisplay-functions'.
1812 It is a bit easier to use than `pre-redisplay-function'.
1815 ** The second arg of `looking-back' should always be provided explicitly.
1816 Previously, it was an optional argument, now it's mandatory.
1819 ** Text properties `intangible', `point-entered', and `point-left' are obsolete.
1820 Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
1821 implemented by the new `cursor-intangible-mode' and
1822 `cursor-sensor-mode' minor modes.
1825 ** `inhibit-point-motion-hooks' now defaults to `t' and is obsolete.
1826 Use the new minor modes `cursor-intangible-mode' and
1827 `cursor-sensor-mode' instead.
1830 ** New process type `pipe', which can be used in combination with the
1831 `:stderr' keyword of make-process to handle standard error output
1835 ** New function `make-process' provides an alternative interface to
1836 `start-process'. It allows programs to set process parameters such as
1837 process filter, sentinel, etc., through keyword arguments (similar to
1838 `make-network-process').
1841 ** A new function `directory-files-recursively' returns all matching
1842 files (recursively) under a directory.
1845 ** New variable `inhibit-message', when bound to non-nil, inhibits
1846 `message' and related functions from displaying messages in the echo
1847 area. The output is still logged to the *Messages* buffer.
1850 ** A new text property `inhibit-read-only' can be used in read-only
1851 buffers to allow certain parts of the text to be writable.
1854 ** A new variable `comment-end-can-be-escaped' is useful in languages
1855 such as C and C++ where line comments with escaped newlines are
1856 continued to the next line.
1859 ** New macro `define-advice'.
1862 ** Emacs Lisp now supports generators.
1863 See the "Generators" section of the ELisp manual for the details.
1866 ** New finalizer facility for running code when objects become unreachable.
1867 See the "Finalizer Type" subsection in the ELisp manual for the
1871 ** lexical closures can use (:documentation FORM) to build their docstring.
1872 It should be placed right where the docstring would be, and FORM is then
1873 evaluated (and should return a string) when the closure is built.
1876 ** The new command `fortune-message' has been added, which displays
1877 fortunes in the echo area.
1880 ** define-inline provides a new way to define inlinable functions.
1883 ** New function `macroexpand-1' to perform a single step of macro expansion.
1886 ** Some "x-*" functions were obsoleted and/or renamed:
1887 *** x-select-text is renamed gui-select-text.
1888 *** x-selection-value is renamed gui-selection-value.
1889 *** x-get-selection is renamed gui-get-selection.
1890 *** x-get-clipboard and x-clipboard-yank are marked obsolete.
1891 *** x-get-selection-value is renamed to gui-get-primary-selection.
1892 *** x-set-selection is renamed to gui-set-selection
1895 ** New function `string-greaterp', which return the opposite result of
1899 ** The new functions `string-collate-lessp' and `string-collate-equalp'
1900 preserve the collation order as defined by the system's locale(1)
1901 environment. For the time being this is implemented for modern POSIX
1902 systems and for MS-Windows, for other systems they fall back to their
1903 counterparts `string-lessp' and `string-equal'.
1906 ** The new function `string-version-lessp' compares strings by
1907 interpreting consecutive runs of numerical characters as numbers, and
1908 compares their numerical values. According to this predicate,
1909 "foo2.png" is smaller than "foo12.png".
1912 *** The ls-lisp package uses `string-collate-lessp' to sort file names.
1913 The effect is that, on systems that use ls-lisp for Dired, the default
1914 sort order of the files in Dired is now different from what it was in
1915 previous versions of Emacs. In particular, the file names are sorted
1916 disregarding punctuation, accents, and diacritics, and letter case is
1917 ignored. For example, files whose name begin with a period will no
1918 longer appear near the beginning of the directory listing. If you
1919 want the old, locale-independent sorting, customize the new option
1920 `ls-lisp-use-string-collate' to the nil value.
1923 *** The MS-Windows specific variable `w32-collate-ignore-punctuation',
1924 if set to a non-nil value, causes the above 2 functions to ignore
1925 symbol and punctuation characters when collating strings. This
1926 emulates the behavior of modern Posix platforms when the locale's
1927 codeset is "UTF-8" (as in "en_US.UTF-8"). This is needed because
1928 MS-Windows doesn't support UTF-8 as codeset in its locales.
1931 ** New function `alist-get', which is also a valid place (aka lvalue).
1934 ** New function `funcall-interactively', which works like `funcall'
1935 but makes `called-interactively-p' treat the function as (you guessed it)
1936 called interactively.
1939 ** New function `function-put' to use instead of `put' for function properties.
1942 ** The new function `bidi-find-overridden-directionality' allows you to
1943 find characters whose directionality was, perhaps maliciously,
1944 overridden by directional override control characters. Lisp programs
1945 can use this to detect potential phishing of URLs and other links that
1946 exploits bidirectional display reordering.
1949 ** The new function `buffer-substring-with-bidi-context' allows you to
1950 copy a portion of a buffer into a different location while preserving
1951 the visual appearance both of the copied text and the text at
1952 destination, even when the copied text includes mixed bidirectional
1953 text and directional control characters.
1956 ** New properties that can be specified with `declare':
1957 *** (interactive-only INSTEAD), says to use INSTEAD for non-interactive use.
1958 *** (pure VAL), if VAL is non-nil, indicates the function is pure.
1959 *** (side-effect-free VAL), if VAL is non-nil, indicates the function does not
1963 ** New macro `with-file-modes', for evaluating expressions with default file
1964 permissions set to temporary values (e.g., for creating private files).
1967 ** You can access the slots of structures using `cl-struct-slot-value'.
1970 ** Function `sort' can deal with vectors.
1973 ** Function `system-name' now returns an updated value if the current
1974 system's name has changed or if the Emacs process has changed systems,
1975 and to avoid long waits it no longer consults DNS to canonicalize the
1976 name. The variable `system-name' is now obsolete.
1979 ** Function `write-region' no longer outputs "Wrote FILE" in batch mode.
1982 ** If `pwd' is called with a prefix argument, insert the current default
1986 ** New functions return extended information about fonts and faces.
1989 *** The function `font-info' now returns more details about a font.
1990 In particular, it now returns the average width of the font's
1991 characters, which can be used for geometry-related calculations.
1994 *** A new function `default-font-width' returns the average width of a
1995 character in the current buffer's default font. If the default face
1996 is remapped (see `face-remapping-alist'), the value for the remapped
1997 face is returned. This function complements the existing function
1998 `default-font-height'.
2001 *** New functions `window-font-height' and `window-font-width' return
2002 the height and average width of characters in a specified face and
2003 window. If FACE is remapped (see `face-remapping-alist'), the
2004 function returns the information for the remapped face.
2007 *** A new function `window-max-chars-per-line' returns the maximal
2008 number of characters that can be displayed on one line. If a face
2009 and/or window are provided, these values are used for the
2010 calculation. This function is different from `window-body-width' in
2011 that it accounts for (i) continuation glyphs, (ii) the size of the
2012 font, and (iii) the specified window.
2015 ** New utilities in subr-x.el:
2016 *** New macros `if-let' and `when-let' allow defining bindings and to
2017 execute code depending whether all values are true.
2018 *** New macros `thread-first' and `thread-last' allow threading a form
2019 as the first or last argument of subsequent forms.
2022 ** Documentation strings now support quoting with curved single quotes
2023 ‘like-this’ in addition to the old style with grave accent and
2024 apostrophe `like-this'. The new style looks better on today's displays.
2025 In the new Electric Quote mode, you can enter curved single quotes
2026 into documentation by typing ` and '. Outside Electric Quote mode,
2027 you can enter them by typing ‘C-x 8 [’ and ‘C-x 8 ]’, or (if your Alt
2028 key works) by typing ‘A-[’ and ‘A-]’. As described above under
2029 ‘text-quoting-style’, the user can specify how to display doc string
2033 ** New function ‘format-message’ is like ‘format’ and also converts
2034 curved single quotes, grave accents and apostrophes as per
2035 ‘text-quoting-style’.
2038 ** show-help-function's arg is converted via substitute-command-keys
2039 before being passed to the function. Help strings, help-echo
2040 properties, etc. can therefore contain command key escapes and
2044 ** Time-related changes:
2046 *** Time conversion functions now accept an optional ZONE argument
2047 that specifies the time zone rules for conversion. ZONE is omitted or
2048 nil for Emacs local time, t for Universal Time, ‘wall’ for system wall
2049 clock time, or a string as in ‘set-time-zone-rule’ for a time zone
2050 rule. The affected functions are ‘current-time-string’,
2051 ‘current-time-zone’, ‘decode-time’, and ‘format-time-string’. The
2052 function ‘encode-time’, which already accepted a simple time zone rule
2053 argument, has been extended to accept all the new forms.
2055 *** Time-related functions now consistently accept numbers
2056 (representing seconds since the epoch) and nil (representing the
2057 current time) as well as the usual list-of-integer representation.
2058 Affected functions include `current-time-string', `current-time-zone',
2059 `decode-time', `float-time', `format-time-string', `seconds-to-time',
2060 `time-add', `time-less-p', `time-subtract', `time-to-day-in-year',
2061 `time-to-days', and `time-to-seconds'.
2063 *** The `encode-time-value' and `with-decoded-time-value' macros have
2066 *** `calendar-next-time-zone-transition', `time-add', and
2067 `time-subtract' no longer return time values in the obsolete and
2068 undocumented integer-pair format. Instead, they return a list of two
2072 ** New function `set-binary-mode' allows switching a standard stream
2073 of the Emacs process to binary I/O mode.
2076 ** The new function `directory-name-p' can be used to check whether a file
2077 name (as returned from, for instance, `file-name-all-completions') is
2078 a directory file name. It returns non-nil if the last character in
2079 the name is a directory separator character (forward slash on GNU and
2080 Unix systems, forward- or backslash on MS-Windows and MS-DOS).
2083 ** ASCII approximations to curved quotes are put in standard-display-table
2084 if the terminal cannot display curved quotes.
2087 ** Standard output and error streams now transliterate characters via
2088 standard-display-table, and encode output using locale-coding-system.
2089 To force a specific encoding, bind `coding-system-for-write' to the
2090 coding-system of your choice when invoking functions like `prin1' and
2094 ** New var `truncate-string-ellipsis' to choose how to indicate truncation.
2097 ** New possible value for `system-type': `nacl'.
2098 This is used by Google's Native Client (NaCl).
2101 ** `read-color' will now display the color names using the color itself
2102 as the background color.
2105 ** There is now a new variable `flyspell-sort-corrections-function'
2106 that allows changing the way corrections are sorted.
2108 ** Miscellaneous name change
2111 For consistency with the usual Emacs spelling, the Lisp variable
2112 `hfy-optimisations' has been renamed to `hfy-optimizations'.
2113 The old name should still work, as an obsolescent alias.
2115 ** Changes in Frame- and Window- Handling
2118 *** Emacs can now draw horizontal scroll bars on some platforms that
2119 provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
2120 Horizontal scroll bars are turned off by default.
2122 **** New function `horizontal-scroll-bars-available-p' telling whether
2123 horizontal scroll bars are available on the underlying system.
2125 **** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
2126 bars on all existing and future frames.
2128 **** New function `toggle-horizontal-scroll-bar' to toggle horizontal
2129 scroll bars on the selected frame.
2131 **** New frame parameters `horizontal-scroll-bars' and
2132 `scroll-bar-height' to set horizontal scroll bars and their height
2133 for individual frames and in `default-frame-alist'.
2135 **** New functions `frame-scroll-bar-height' and
2136 `window-scroll-bar-height' return the height of horizontal scroll
2137 bars on a specific frame or window.
2139 **** `set-window-scroll-bars' now accepts five parameters where the last
2140 two specify height and type of the window's horizontal scroll bar.
2142 **** `window-scroll-bars' now returns type and sizes of horizontal scroll
2145 **** New buffer-local variables `horizontal-scroll-bar' and
2146 `scroll-bar-height'.
2149 *** New functions `frame-geometry' and `frame-edges' give access to a
2153 *** New functions `mouse-absolute-pixel-position' and
2154 `set-mouse-absolute-pixel-position' get/set screen coordinates of the
2158 *** The function `window-edges' now accepts three additional arguments to
2159 retrieve body, absolute and pixel edges of the window.
2162 *** The functions `window-inside-edges', `window-inside-pixel-edges' and
2163 `window-inside-absolute-pixel-edges' have been renamed to respectively
2164 `window-body-edges', `window-body-pixel-edges' and
2165 `window-absolute-body-pixel-edges'. The old names are kept as aliases.
2168 *** New function `window-absolute-pixel-position' to get the screen
2169 coordinates of a visible buffer position.
2172 *** The height of a frame's menu and tool bar are no longer counted in the
2173 frame's text height. This means that the text height stands only for
2174 the height of the frame's root window plus that of the echo area (if
2175 present). This was already the behavior for frames with external tool
2176 and menu bars (like in the Gtk builds) but has now been extended to all
2180 *** Frames now do not necessarily preserve the number of columns or lines
2181 they display when setting default font, menu bar, fringe width, or
2182 scroll bars. In particular, maximized and fullscreen frames are
2183 conceptually never resized if such settings change. For fullheight and
2184 fullwidth frames, the behavior may depend on the toolkit used.
2185 **** New option `frame-inhibit-implied-resize' if non-nil, means that
2186 setting default font, menu bar, fringe width, or scroll bars of a
2187 specific frame does not resize that frame in order to preserve the
2188 number of columns or lines it displays.
2191 *** New function `window-preserve-size' allows you to preserve the size of
2192 a window without "fixing" it. It's supported by `fit-window-to-buffer',
2193 `temp-buffer-resize-mode' and `display-buffer'.
2196 *** New `display-buffer' action function `display-buffer-use-some-frame'.
2197 This displays the buffer in an existing frame other than the current
2198 frame, and allows the caller to specify a frame predicate to exclude
2202 *** New minor mode `window-divider-mode' and options
2203 `window-divider-default-places', `window-divider-default-bottom-width'
2204 and `window-divider-default-right-width'.
2207 ** Tearoff menus and detachable toolbars for Gtk+ have been removed.
2208 Those features have been deprecated in Gtk+ for a long time.
2213 *** etags no longer qualifies class members by default.
2215 By default, `etags' will not qualify class members for Perl and C-like
2216 object-oriented languages with their class names and namespaces, and
2217 will remove qualifications used explicitly in the code from the tag
2218 names it puts in TAGS files. This is so the etags.el back-end for
2219 `xref-find-definitions' is more accurate and produces less false
2222 Use --class-qualify (-Q) if you want the old default behavior of
2223 qualifying class members in C++, Java, Objective C, and Perl. Note
2224 that using -Q might make some class members become "unknown" to `M-.'
2225 (`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
2226 qualified names by hand.
2229 *** New language Ruby
2231 Names of modules, classes, methods, functions, and constants are
2232 tagged. Overloaded operators are also tagged.
2236 Names of packages, functions, and types are tagged.
2239 *** Improved support for Lua
2241 Etags now tags functions even if the "function" keyword follows some
2242 whitespace at line beginning.
2245 * Changes in Emacs 25.1 on Non-Free Operating Systems
2248 ** MS-Windows specific Emacs build scripts are no longer in the distribution
2249 This includes the makefile.w32-in files in various subdirectories, and
2250 the support files. The file nt/configure.bat now just tells the user
2251 to use the procedure described in nt/INSTALL, by running the Posix
2252 `configure' script in the top-level directory.
2255 ** Building Emacs for MS-Windows requires at least Windows XP
2256 or Windows Server 2003. The built binaries still run on all versions
2257 of Windows starting with Windows 9X.
2260 ** Emacs running on MS-Windows now supports the daemon mode.
2263 ** The byte counts in etags-generated TAGS files are now the same on
2264 MS-Windows as they are on other platforms.
2267 ** On OS X, configure creates a Cocoa ("Nextstep") build by default.
2268 Pass '--without-ns' to configure to create an X11 build, the old default.
2271 ** OS X 10.5 or older is no longer supported.
2274 ** OS X on PowerPC is no longer supported.
2277 ** New variable `ns-use-fullscreen-animation' controls animation for
2278 non-native NS fullscreen. The default is nil. Set to t to enable
2279 animation when entering and leaving fullscreen. For native OSX fullscreen
2283 ** The new function 'w32-application-type' returns the type of an
2284 MS-Windows application given the name of its executable program file.
2286 ** New variable `w32-pipe-buffer-size'.
2287 It can be used to tune the size of the buffer of pipes created for
2288 communicating with subprocesses, when the program run by a subprocess
2289 exhibits unusual buffering behavior. Default is zero, which lets the
2290 OS use its default size.
2293 ----------------------------------------------------------------------
2294 This file is part of GNU Emacs.
2296 GNU Emacs is free software: you can redistribute it and/or modify
2297 it under the terms of the GNU General Public License as published by
2298 the Free Software Foundation, either version 3 of the License, or
2299 (at your option) any later version.
2301 GNU Emacs is distributed in the hope that it will be useful,
2302 but WITHOUT ANY WARRANTY; without even the implied warranty of
2303 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2304 GNU General Public License for more details.
2306 You should have received a copy of the GNU General Public License
2307 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
2313 paragraph-separate: "[
\f]*$"