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
* 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
+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
cousins, even those composed of multiple characters, as well as many
other symbols like ℀, ℁, ⒜, and ⓐ.
-** New function `character-folded-regexp' can be used
-by searching commands to produce a a regexp matching anything that
+** 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
+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.
** 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”.
+** 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.
\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 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.
*** 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-toggle-hiding' now toggles the hiding of packages.
This includes the above-mentioned low-priority packages, as well as
*** 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.
** 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
*** 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.
*** 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
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.
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 replaces left single quotation marks (‘) by left quotes
-and right single quotation marks (’) by right quotes. It also
-replaces grave accents by left quotes, and apostrophes that match
-grave accents by right quotes. As before, isolated apostrophes and
-characters preceded by \= are output as-is. Left and right quotes are
-determined by new custom variable ‘help-quote-translation’. ?‘ means
-quote ‘like this’, ?' means quote 'like this', ?` means quote `like
-this', and nil (default) means quote ‘like this’ if displayable and
-'like this' otherwise.
+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
\f
* Lisp Changes in Emacs 25.1
-** New function `filepos-to-bufferpos'.
+** 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 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-]’.
+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.
-** In locales that cannot display curved quotes, ASCII approximations
-are installed in standard-display-table.
+** 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.
*** 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
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.
\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