** Building Emacs now requires GNU make, version 3.81 or later.
+** New configure option --with-cairo.
+Maybe add text based on http://lists.gnu.org/archive/html/emacs-devel/2015-05/msg00689.html
+
** By default, Emacs no longer works on IRIX. We expect that Emacs
users are not affected by this, as SGI stopped supporting IRIX in
December 2013. If you are affected, please send a bug report. You
undumping code to GCC under IRIX, or by configuring --with-wide-int,
or by sticking with Emacs 24.4.
+** The Emacs garbage collector assumes GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
+The GC_MAKE_GCPROS_NOOPS stack-marking variant has been the default
+since Emacs 24.4, and the other variants were undocumented and were
+obstacles to maintenance and development. GC_MARK_STACK and its
+related symbols have been removed from the C internals.
+
** 'configure' now prefers gnustep-config when configuring GNUstep.
If gnustep-config is not available, the old heuristics are used.
+---
+** 'configure' now prefers inotify to gfile for file notification,
+unless gfile is explicitly requested via --with-file-notification='gfile'.
+
---
** The configure option '--with-pkg-config-prog' has been removed.
Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
\f
* Startup Changes in Emacs 25.1
++++
+** When Emacs is given a file as a command line argument and
+`initial-buffer-choice' is non-nil, display both the file and
+`initial-buffer-choice'. When Emacs is given more than one file and
+`initial-buffer-choice' is non-nil, show `initial-buffer-choice'
+and *Buffer List*. This makes Emacs convenient to use from the
+command line when `initial-buffer-choice' is non-nil.
+
++++
+** The value of ‘initial-scratch-message’ is now treated as a doc string
+and can contain escape sequences for command keys, quotes, and the like.
+
\f
* Changes in Emacs 25.1
+** `xref-find-definitions' and `describe-function' now display
+ information about mode local overrides (defined by
+ cedet/mode-local.el `define-overloadable-function' and
+ `define-mode-local-overrides').
+
+** New `display-buffer' action function `display-buffer-use-some-frame'
+This displays the buffer in an existing frame other than the current
+frame, and allows the caller to specify a frame predicate to exclude
+frames.
+
+** New doc command `describe-symbol'. Works for functions, vars, faces, etc...
+
+** `isearch' and `query-replace' now perform character folding in matches.
+This is analogous to case-folding, but applies between Unicode
+characters and their ASCII counterparts. This means many characters
+will match entire groups of characters.
+
+For instance, the " will match all variants of unicode double quotes
+(like “ and ”), and the letter a will match all of its accented
+cousins, even those composed of multiple characters, as well as many
+other symbols like ℀, ℁, ⒜, and ⓐ.
+
+** New function `character-fold-to-regexp' can be used
+by searching commands to produce a regexp matching anything that
+character-folds into STRING.
+
+** New command `checkdoc-package-keywords' checks if the
+current package keywords are recognized. Set the new option
+`checkdoc-package-keywords-flag' to non-nil to make
+`checkdoc-current-buffer' call this function automatically.
+
+** New function `checkdoc-file' checks for style errors.
+It's meant for use together with `compile':
+emacs -batch --eval "(checkdoc-file \"subr.el\")"
+
** New command `comment-line' bound to `C-x C-;'.
** New function `custom-prompt-customize-unsaved-options' checks for
** A new function `directory-files-recursively' returns all matching
files (recursively) under a directory.
-** The new `directory-name-p' can be used to check whether a file
+** The new function `directory-name-p' can be used to check whether a file
name (as returned from, for instance, `file-name-all-completions' is
a directory file name. It returns non-nil if the last character in
the name is a forward slash.
`message' and related functions from displaying messages the Echo
Area. The output is still logged to the *Messages* buffer.
++++
** It is now safe for a mode that derives `tabulated-list-mode' to not
call `tabulated-list-init-header', in which case it will have no
header.
++++
+** `tabulated-list-print' takes a second optional argument, update,
+which specifies an alternative printing method which is faster when
+few or no entries have changed.
+
\f
* Editing Changes in Emacs 25.1
** C-x 8 now has shorthands for these chars: ‐ ‑ ‒ – — ― ‘ ’ “ ” † ‡ • ′ ″
€ № ← → ↔ − ≈ ≠ ≤ ≥. As before, you can type C-x 8 C-h to list shorthands.
+** New minor mode electric-quote-mode for quoting ‘like this’ and “like this”
+as you type. See also the new variable ‘text-quoting-style’.
+
** New minor mode global-eldoc-mode is enabled by default.
** Emacs now supports "bracketed paste mode" when running on a terminal
** Emacs now supports the latest version of the UBA.
The Emacs implementation of the Unicode Bidirectional Algorithm (UBA)
was updated to support all the latest additions and changes introduced
-in Unicode Standard versions 6.3 and 7.0, and a few changes suggested
-for Unicode 8.0. This includes full support for directional isolates
-and the Bidirectional Parentheses Algorithm (BPA) specified by these
-Unicode standards.
+in Unicode Standard versions 6.3, 7.0, and the latest Unicode 8.0.
+This includes full support for directional isolates and the
+Bidirectional Parentheses Algorithm (BPA) specified by these Unicode
+standards.
** You can access `mouse-buffer-menu' (C-down-mouse-1) using C-f10.
\f
* Changes in Specialized Modes and Packages in Emacs 25.1
+** You can recompute the VC state of a file buffer with `M-x vc-refresh-state'
+** Prog mode has some support for multi-mode indentation.
+See `prog-indentation-context' and `prog-widen'.
+
+** Prettify Symbols mode supports custom composition predicates. By
+overriding the default `prettify-symbols-compose-predicate', modes can
+specify in which contexts a symbol map be composed to some unicode
+character. `prettify-symbols-default-compose-p' is the default which
+is suitable for most programming languages such as C or Lisp (but not
+(La)TeX).
+
** New `xterm-screen-extra-capabilities' config.
** The `save-place' variable is replaced by a `save-place-mode'.
+** ERC
+
+*** Hide message types by network or channel. `erc-hide-list' will
+hide all messages of the specified type, where `erc-network-hide-list'
+and `erc-channel-hide-list' will only hide the specified message types
+for the respective specified targets.
+
** Midnight-mode
*** `midnight-mode' is a proper minor mode.
*** clean-buffer-*-regexps can now specify buffers via predicate functions.
if your xterm supports it and enables the `allowWindowOps' options (disabled
by default at least in Debian, for security reasons).
+Similarly, you can yank the CLIPBOARD/PRIMARY selection (using the OSC-52
+escape sequence) if your xterm has the feature enabled but for that you
+additionally need to add `getSelection' to `xterm-extra-capabilities'.
+
** xterm-mouse-mode now supports mouse-tracking (if your xterm supports it).
** package.el
*** If a package is available on multiple archives and one has higher
priority (as per `package-archive-priorities') only that one is
-listed. This can be configured with `package-menu-hide-low-priority'.
+listed. This can be configured with `package-menu-hide-low-priority'.
-*** `package-menu-hide-obsolete' now toggles the hiding of packages.
+*** `package-menu-toggle-hiding' now toggles the hiding of packages.
This includes the above-mentioned low-priority packages, as well as
available packages whose version is lower than the currently installed
version (which were previously impossible to display).
*** New custom variable `package-selected-packages' tracks packages
which were installed by the user (as opposed to installed as
-dependencies). This variable can also be manually customized.
+dependencies). This variable can also be manually customized.
*** New command `package-install-user-selected-packages' installs all
packages from `package-selected-packages' which are currently missing.
*** New command `ido-bury-buffer-at-head' bound to C-S-b
Bury the buffer at the head of `ido-matches', analogous to how C-k
kills the buffer at head.
+*** A prefix argument to `ido-restrict-to-matches' will reverse its
+meaning, and the list is restricted to those elements that do not
+match the current input.
** Minibuffer
** seq
*** New seq library:
The seq library adds sequence manipulation functions and macros that
-complement basic functions provided by subr.el. All functions are
+complement basic functions provided by subr.el. All functions are
prefixed with `seq-' and work on lists, strings and vectors.
+** map
+*** New map library:
+The map library provides map-manipulation functions that work on alists,
+hash-table and arrays. All functions are prefixed with "map-".
+
** Calendar and diary
++++
+*** The default `diary-file' is now located in .emacs.d.
+
+++
*** New commands to insert diary entries with Chinese dates:
`diary-chinese-insert-anniversary-entry' `diary-chinese-insert-entry'
*** The option `calendar-mode-line-format' can now be nil,
which means to do nothing special with the mode line in calendars.
++++
+*** New option `calendar-weekend-days'.
+The option customizes which day headers receive the
+`calendar-weekend-header' face.
+
+---
+*** New optional args N and STRING for ‘holiday-greek-orthodox-easter’.
+
---
*** Many items obsolete since at least version 23.1 have been removed.
The majority were function/variable/face aliases, too numerous to list here.
---
** ntlm.el has support for NTLM2.
----
-** The Rmail commands d, C-d and u now handle repeat counts to delete or
+** Rmail
+
+*** The Rmail commands d, C-d and u take optional repeat counts to delete or
undelete multiple messages.
-** Rmail can now render HTML mail messages if your Emacs was built with
+*** Rmail can now render HTML mail messages if your Emacs was built with
libxml2 or if you have the Lynx browser installed. By default, Rmail
will display the HTML version of a mail message that has both HTML and
plain text parts, if display of HTML email is possible; customize the
`rmail-mime-prefer-html' option to `nil' if you don't want that.
++++
+*** In the commands that make summaries by subject, recipients, or senders,
+you can no longer use commas to separate regular expressions.
+
** SES now supports local printer functions; see `ses-define-local-printer'.
** In sh-mode, you can now use `sh-shell' as a file-local variable to
*** New connection method "nc", which allows to access dumb busyboxes.
+*** Method-specific parameters can be overwritten now with variable
+`tramp-connection-properties'.
+
** SQL mode
*** New user variable `sql-default-directory' enables remote
fitting for use in money calculations; factorial works with
non-integer inputs.
-** HideIfDef mode now support full C/C++ expressions, argumented macro expansions
-, interactive macro evaluation and automatic scanning of #defined symbols.
+** HideIfDef mode now support full C/C++ expressions, argumented macro expansions,
+interactive macro evaluation and automatic scanning of #defined symbols.
*** New custom variable `hide-ifdef-header-regexp' to define C/C++ header file
-name patterns. Default case-insensitive .h, .hh, .hpp and .hxx.
+name patterns. Default case-insensitive .h, .hh, .hpp, .hxx, and .h++.
*** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
reinclusion protected header files from being fully hidden.
*** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
-name patterns (e.x. all "FOR_DOXYGEN_ONLY_*") to be excluded.
+name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be excluded.
** TeX mode
*** New custom variable `tex-print-file-extension' to help users who
use PDF instead of DVI.
+*** TeX mode now supports Prettify Symbols mode. When enabling
+`prettify-symbols-mode' in a tex-mode buffer, \alpha ... \omega, and
+many other math macros are displayed using unicode characters.
+
** whitespace-mode: new 'big-indent style highlighting too much indentation.
By default, 32 spaces and four TABs are considered to be too much but
`whitespace-big-indent-regexp' can be configured to change that.
*** The new built-in command `clear' can scroll window contents out of sight.
If provided with an optional non-nil argument, the scrollback contents will be cleared.
+*** New buffer syntax '#<buffer-name>', which is equivalent to
+'#<buffer buffer-name>'. This shorthand makes interacting with
+buffers from eshell more convenient. Custom variable
+`eshell-buffer-shorthand', which has been broken for a while, has been
+removed.
+
+*** By default, eshell "visual" program buffers (created by
+`eshell-visual-commands' and similar custom vars) are no longer killed
+when their processes die. This fixes issues with short-lived commands
+and makes visual programs more useful in general. For example, if
+"git log" is a visual command, it will always show the visual command
+buffer, even if the "git log" process dies. For the old behavior,
+make the new option `eshell-destroy-buffer-when-process-dies' non-nil.
+
** Browse-url
*** Support for the Conkeror web browser.
---
*** gulp.el
+*** landmark.el (moved to elpa.gnu.org)
+
+++
** The character classes [:graph:] and [:print:] in regular expressions
no longer match every multibyte character. Instead, Emacs now
\f
* New Modes and Packages in Emacs 25.1
+** pinentry.el allows GnuPG passphrase to be prompted through the
+minibuffer instead of a graphical dialog, depending on whether the gpg
+command is called from Emacs (i.e., INSIDE_EMACS environment variable
+is set). This feature requires newer versions of GnuPG (2.1.5 or
+later) and Pinentry (0.9.5 or later).
+
** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
** scss-mode (a minor variant of css-mode)
\f
* Incompatible Lisp Changes in Emacs 25.1
+** `:global' minor mode use `setq-default' rather than `setq'.
+This means that you can't use `make-local-variable' and expect them to
+"magically" become buffer-local.
+
+** `inhibit-point-motion-hooks' now defaults to t and is obsolete.
+
++++
+** `track-mouse' no longer freezes the shape of the mouse pointer.
+The `track-mouse' form no longer refrains from changing the shape of
+the mouse pointer for the entire time the body of that form is
+executed. Lisp programs that use `track-mouse' for dragging across
+large portions of the Emacs display, and want to avoid changes in the
+pointer shape during dragging, should bind the variable `track-mouse'
+to the special value `dragging' in the body of the form.
+
+** The optional `predicate' argument of `lisp-complete-symbol' no longer
+has any effect. (This change was made in Emacs 24.4 but was not
+advertised at the time.)
+
** `indirect-function' does not signal `void-function' any more.
This is mostly a bug-fix, since this change was missed back in 24.4 when
symbol-function was changed not to signal `void-function' any more.
from which the minibuffer was entered, call it with the new argument
`switch-buffer'.
-** window-configurations no longer record the buffers's marks.
+** window-configurations no longer record the buffers' marks.
** inhibit-modification-hooks now also inhibits lock-file checks, as well as
active region handling.
denied" instead of "permission denied". The old behavior was problematic
in languages like German where downcasing rules depend on grammar.
++++
+** New variable ‘text-quoting-style’ to control how Emacs translates quotes.
+Set it to ‘curve’ for curved single quotes ‘like this’, to ‘straight’
+for straight apostrophes 'like this', and to ‘grave’ for grave accent
+and apostrophe `like this'. The default value nil acts like ‘curve’
+if curved single quotes are displayable, and like ‘grave’ otherwise.
+The new variable affects display of diagnostics and help, but not of info.
+
++++
+** substitute-command-keys now replaces quotes.
+That is, it converts documentation strings’ quoting style as per the
+value of ‘text-quoting-style’. Doc strings in source code can use
+either curved single quotes or grave accents and apostrophes. As
+before, characters preceded by \= are output as-is.
+
++++
+** Message-issuing functions ‘error’, ‘message’, etc. now convert quotes.
+They use the new ‘format-message’ function instead of plain ‘format’,
+so that they now follow user preference as per ‘text-quoting-style’
+when processing curved single quotes, grave accents, and apostrophes
+in their format argument.
+
+++
** The character classes [:alpha:] and [:alnum:] in regular expressions
now match multibyte characters using Unicode character properties.
** The `diff' command uses the unified format now. To restore the old
behavior, set `diff-switches' to `-c'.
+** `grep-template' and `grep-find-template' values don't include the
+--color argument anymore. It's added at the <C> place holder position
+dynamically.
+
+** `grep-template' and `grep-find-template' values don't include the
+--color argument anymore. It's added at the <C> place holder position
+dynamically. Any third-party code that changes these templates should
+be updated accordingly.
+
\f
* Lisp Changes in Emacs 25.1
+** New hooks prefix-command-echo-keystrokes-functions and
+prefix-command-preserve-state-hook, to allow the definition of prefix
+commands other than the predefined C-u.
+
+** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
+
** The default value of `load-read-function' is now `read'.
** New hook `pre-redisplay-functions', a bit easier to use than pre-redisplay-function.
** define-inline provides a new way to define inlinable functions.
-** New function macroexpand-1 to perform a single step of macroexpansion.
+** New function `macroexpand-1' to perform a single step of macroexpansion.
** Some "x-*" were obsoleted:
*** x-select-text is renamed gui-select-text.
*** x-get-selection-value is renamed to gui-get-primary-selection.
*** x-set-selection is renamed to gui-set-selection
+** New function `string-greaterp', which return the opposite result of
+`string-lessp'.
+
** New function `alist-get', which is also a valid place (aka lvalue).
** New function `funcall-interactively', which works like `funcall'
** You can access the slots of structures using `cl-struct-slot-value'.
-** Functions `rmail-delete-forward' and `rmail-delete-backward' take an
-optional repeat-count argument.
-
** Function `sort' can deal with vectors.
** Function `system-name' now returns an updated value if the current
*** New macros `thread-first' and `thread-last' allow threading a form
as the first or last argument of subsequent forms.
++++
+** Documentation strings now support quoting with curved single quotes
+‘like-this’ in addition to the old style with grave accent and
+apostrophe `like-this'. The new style looks better on today's displays.
+In the new Electric Quote mode, you can enter curved single quotes
+into documentation by typing ` and '. Outside Electric Quote mode,
+you can enter them by typing ‘C-x 8 [’ and ‘C-x 8 ]’, or (if your Alt
+key works) by typing ‘A-[’ and ‘A-]’. As described above under
+‘text-quoting-style’, the user can specify how to display doc string
+quotes.
+
++++
+** New function ‘format-message’ is like ‘format’ and also converts
+curved single quotes, grave accents and apostrophes as per
+‘text-quoting-style’.
+
++++
+** show-help-function's arg is converted via substitute-command-keys
+before being passed to the function. Help strings, help-echo
+properties, etc. can therefore contain command key escapes and
+quotation marks.
+
+++
** Time-related changes:
+*** Time conversion functions now accept an optional ZONE argument
+that specifies the time zone rules for conversion. ZONE is omitted or
+nil for Emacs local time, t for Universal Time, ‘wall’ for system wall
+clock time, or a string as in ‘set-time-zone-rule’ for a time zone
+rule. The affected functions are ‘current-time-string’,
+‘current-time-zone’, ‘decode-time’, and ‘format-time-string’. The
+function ‘encode-time’, which already accepted a simple time zone rule
+argument, has been extended to accept all the new forms.
+
*** Time-related functions now consistently accept numbers
(representing seconds since the epoch) and nil (representing the
current time) as well as the usual list-of-integer representation.
** New function `set-binary-mode' allows to switch a standard stream
of the Emacs process to binary I/O mode.
+** ASCII approximations to curved quotes are put in standard-display-table
+if the locale cannot display curved quotes, or if text-quoting-style
+initially specifies a preference for ASCII.
+
+** Standard output and error streams now transliterate characters via
+standard-display-table, and encode output using locale-coding-system.
+
** Miscellaneous name change
For consistency with the usual Emacs spelling, the Lisp variable
*** New buffer-local variables `horizontal-scroll-bar' and
`scroll-bar-height'.
++++
+** New functions `frame-geometry' and `frame-edges' give access to a
+frame's geometry.
+
++++
+** New functions `mouse-absolute-pixel-position' and
+`set-mouse-absolute-pixel-position' get/set screen coordinates of the
+mouse cursor.
+
++++
+** The function `window-edges' now accepts three additional arguments to
+retrieve body, absolute and pixel edges of the window.
+
++++
+** The functions `window-inside-edges', `window-inside-pixel-edges' and
+`window-inside-absolute-pixel-edges' have been renamed to respectively
+`window-body-edges', `window-body-pixel-edges' and
+`window-absolute-body-pixel-edges'. The old names are kept as aliases.
+
++++
+** New function `window-absolute-pixel-position' to get the screen
+coordinates of a visible buffer position.
+
+++
** The height of a frame's menu and tool bar are no longer counted in the
frame's text height. This means that the text height stands only for
windows without "fixing" it. It's supported by `fit-window-to-buffer',
`temp-buffer-resize-mode' and `display-buffer'.
++++
+** New minor mode `window-divider-mode' and options
+`window-divider-default-places', `window-divider-default-bottom-width'
+and `window-divider-default-right-width'.
+
++++
+** New option `switch-to-buffer-in-dedicated-window' allows to customize
+how `switch-to-buffer' proceeds interactively when the selected window
+is strongly dedicated to its buffer.
+
++++
+** The option `even-window-heights' has been renamed to
+`even-window-sizes' and now handles window widths as well.
+
** Tearoff menus and detachable toolbars for Gtk+ has been removed.
Those features have been deprecated in Gtk+ for a long time.
+** Miscellaneous
+
+*** etags no longer qualifies class members by default.
+By default, `etags' will not qualify class members for C-like
+object-oriented languages with their class names and namespaces, and
+will remove qualifications used explicitly in the code from the tag
+names it puts in TAGS files. This is so the etags.el back-end for
+`xref-find-definitions' is more accurate and produces less false
+positives.
+
+Use --class-qualify (-Q) if you want the old default behavior of
+qualifying class members in C++, Java, and Objective C. Note that
+using -Q might make some class members become "unknown" to `M-.'
+(`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
+qualified names by hand.
+
\f
* Changes in Emacs 25.1 on Non-Free Operating Systems
+---
+** MS-Windows specific Emacs build scripts are no longer in the distribution
+This includes the makefile.w32-in files in various subdirectories, and
+the support files. The file nt/configure.bat now just tells the user
+to use the procedure described in nt/INSTALL, by running the Posix
+`configure' script in the top-level directory.
+
---
** Building Emacs for MS-Windows requires at least Windows XP
or Windows Server 2003. The built binaries still run on all versions
+++
** Emacs running on MS-Windows now supports the daemon mode.
+** The byte counts in etags-generated TAGS files are now the same on
+MS-Windows as they are on other platforms.
+
+---
+** On OS X, configure creates a Cocoa ("Nextstep") build by default.
+Pass '--without-ns' to configure to create an X11 build, the old default.
+
** OS X 10.5 or older is no longer supported.
** OS X on PowerPC is no longer supported.
+---
+** The new function 'w32-application-type' returns the type of an
+MS-Windows application given the name of its executable program file.
+
\f
----------------------------------------------------------------------
This file is part of GNU Emacs.