GNU Emacs NEWS -- history of user-visible changes.
-Copyright (C) 2014-2015 Free Software Foundation, Inc.
+Copyright (C) 2014-2016 Free Software Foundation, Inc.
See the end of the file for license conditions.
Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
The old Emacs logo icons are available as `emacs23.png' in the same location.
+---
+** New make target `check-expensive' to run additional tests.
+This includes all tests which run via "make check", plus additional
+tests which take more time to perform.
+
\f
* Startup Changes in Emacs 25.1
variable `read-hide-char'.
---
-** New input method: `tamil-dvorak'.
+** New input methods: `tamil-dvorak' and `programmer-dvorak'.
\f
* Editing Changes in Emacs 25.1
`show-paren-when-point-in-periphery'.
** Lisp mode
+
+---
*** Strings after `:documentation' are highlighted as docstrings.
+This enhances Lisp mode fontification to handle documentation of the
+form `(:documentation "the doc string")' used in Common Lisp code for
+CLOS class and slot documentation.
** Rectangle editing
log file, then it can be passed as an argument to the above function
to produce a neat summary.
+---
** New js.el option `js-indent-first-init'.
+It was renamed from `js-indent-first-initialiser', to avoid issues
+with American vs British spelling.
** Info
---
*** 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.
+** Hide-IfDef mode
+
+---
+*** Hide-IfDef mode now support full C/C++ expressions in macros,
+macro argument expansion, interactive macro evaluation and automatic
+scanning of #define'd symbols.
+
+---
+*** New command `hif-evaluate-macro', bound to `C-c @ e', displays the
+result of evaluating a macro.
+
+---
+*** New command `hif-clear-all-ifdef-define', bound to `C-c @ C', clears
+all defined symbols in `hide-ifdef-env'.
-*** New custom variable `hide-ifdef-header-regexp' to define C/C++ header file
-name patterns. Default case-insensitive .h, .hh, .hpp, .hxx, and .h++.
+---
+*** New custom variable `hide-ifdef-header-regexp' to define C/C++ header
+file name patterns. Defaults to files whose extension is one of `.h',
+`.hh', `.hpp', `.hxx', or `.h++', matched case-insensitively.
+
+---
*** New custom variable `hide-ifdef-expand-reinclusion-protection' to prevent
-reinclusion protected header files from being fully hidden.
+reinclusion protected (a.k.a. "idempotent") header files from being hidden.
+(This could happen when an idempotent header file is visited again,
+when its guard symbol is already defined.) Defaults to `t'.
+
+---
*** New custom variable `hide-ifdef-exclude-define-regexp' to define symbol
-name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be excluded.
+name patterns (e.g. all "FOR_DOXYGEN_ONLY_*") to be ignored when
+looking for macro definitions. By default, no symbols are ignored.
** TeX mode
`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.
++++
+** New `big-indent' style in `whitespace-mode' highlights deep indentation.
+By default, 32 consecutive spaces or four consecutive TABs are
+considered to be too deep, but the new variable
+`whitespace-big-indent-regexp' can be customized to change that.
-** tildify: `tildify-space-string', `tildify-pattern', and
-`tildify-foreach-region-function' variables added making
+---
+** New options in `tildify-mode'.
+New options `tildify-space-string', `tildify-pattern', and
+`tildify-foreach-region-function' variables make
`tildify-string-alist', `tildify-pattern-alist', and
`tildify-ignored-environments-alist' variables (as well as a few
helper functions) obsolete.
-** xref
-The new package provides generic framework and new commands to find
-and move to definitions, as well as pop back to the original location.
++++
+** New package Xref replaces Etags's front-end and UI
+
+The new package Xref provides a generic framework and new commands to
+find and move to definitions of functions, macros, data structures
+etc., as well as go back to the location where you were before moving
+to a definition. It supersedes and obsoletes many Etags commands,
+while still using the etags.el code that reads the TAGS tables as one
+of its back-ends.
+
+The command `xref-find-definitions' replaces `find-tag' and provides
+an interface to pick one definition among several.
+`tags-loop-continue' is now unbound. `xref-pop-marker-stack' replaces
+`pop-tag-mark', but has a keybinding (`M-,'), unlike `pop-tag-mark'.
-*** New key bindings
-`xref-find-definitions' replaces `find-tag' and provides an interface
-to pick one destination among several. Hence, `tags-loop-continue' is
-unbound. `xref-pop-marker-stack' replaces `pop-tag-mark', but uses an
-easier binding, which is now unoccupied (`M-,').
`xref-find-definitions-other-window' replaces `find-tag-other-window'.
`xref-find-definitions-other-frame' replaces `find-tag-other-frame'.
`xref-find-apropos' replaces `find-tag-regexp'.
+As a result of this, the following commands are now obsolete:
+`find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
+`tags-apropos', and `tags-loop-continue'.
+
++++
*** New variables
+
`find-tag-marker-ring-length' is now an obsolete alias for
`xref-marker-ring-length'. `find-tag-marker-ring' is now an obsolete
alias for a private variable. `xref-push-marker-stack' and
-`xref-pop-marker-stack' should be used to mutate it instead.
+`xref-pop-marker-stack' should be used instead to manipulate the stack
+of searches for definitions.
---
*** `xref-find-definitions' and `describe-function' now display
information about mode local overrides (defined by cedet/mode-local.el
`define-overloadable-function' `define-mode-local-overrides').
-** etags
-As a result of the above, these commands are now obsolete:
-`find-tag-other-window', `find-tag-other-frame', `find-tag-regexp',
-`tags-apropos' and `tags-loop-continue'.
+The framework's Lisp API is still experimental and can change in major,
+backward-incompatible ways.
+
+---
+** New package Project
+
+The new package Project provides generic infrastructure for dealing
+with projects. The main commands included in it are
+`project-find-file' and `project-find-regexp'.
+
+The Lisp API of this package is still experimental.
** EUDC
EUDC's LDAP backend has been improved.
++++
*** EUDC supports LDAP-over-SSL URLs (ldaps://).
+---
*** EUDC passes LDAP passwords through a pipe to the ldapsearch
subprocess instead of on the command line.
+---
*** EUDC handles LDAP wildcards automatically so the user shouldn't
need to configure this manually anymore.
++++
*** The LDAP configuration section of EUDC's manual has been
rewritten.
There have also been customization changes.
++++
*** New custom variable `eudc-server-hotlist' to allow specifying
multiple EUDC servers in init file.
++++
*** Custom variable `eudc-inline-query-format' defaults to completing
on email and firstname instead of surname.
+---
*** Custom variable `eudc-expansion-overwrites-query' defaults to nil
to avoid interfering with the kill ring.
++++
*** Custom variable `eudc-inline-expansion-format' defaults to
"Firstname Surname <mail-address>".
++++
*** Custom variable `eudc-options-file' defaults to
"~/.emacs.d/eudc-options".
+---
*** New custom variable `ldap-ldapsearch-password-prompt-regexp' to
allow overriding the regular expression that recognizes the ldapsearch
command line's password prompt.
+---
EUDC's BBDB backend now supports BBDB 3.
+---
EUDC's PH backend (eudcb-ph.el) is obsolete.
** Eshell
*** 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
** Browse-url
+---
*** Support for the Conkeror web browser.
---
---
*** gulp.el
+---
*** landmark.el (moved to elpa.gnu.org)
\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
** cl-generic.el provides CLOS-style multiple-dispatch generic functions.
+---
** scss-mode (a minor variant of css-mode)
+---
** let-alist is a new macro (and a package) that allows one to easily
let-bind the values stored in an alist.
+---
** `tildify-mode' allows to automatically insert hard spaces as one
types the text. Breaking line after a single-character words is
forbidden by Czech and Polish typography (and may be discouraged in
other languages), so `auto-tildify-mode' makes it easier to create
a typographically-correct documents.
+---
** The `seq' library adds sequence manipulation functions and macros
that complement basic functions provided by subr.el. All functions
are prefixed with `seq-' and work on lists, strings and vectors.
+---
** The `map' library provides map-manipulation functions that work on
alists, hash-table and arrays. All functions are prefixed with
`map-'.
+---
** The `thunk' library provides functions and macros to control the
evaluation of forms.
+---
** js-jsx-mode (a minor variant of js-mode) provides indentation
support for JSX, an XML-like syntax extension to ECMAScript.
last variable when there was an odd number of arguments has been
eliminated.
++++
** `syntax-begin-function' is declared obsolete.
Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
slot in font-lock-defaults.
`package-enable-at-startup' to t after the call to
`package-initialize'.
+---
** `: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
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.
++++
*** As a consequence, the second arg of `indirect-function' is now obsolete.
++++
** Comint, term, and compile do not set the EMACS env var any more.
Use the INSIDE_EMACS environment variable instead.
++++
** `save-excursion' does not save&restore the mark any more.
+Use `save-mark-and-excursion' if you want the old behavior.
-** read-buffer-function can now be called with a 4th argument (`predicate').
++++
+** `read-buffer' and `read-buffer-function' can now be called with a 4th
+argument (`predicate').
-** completion-table-dynamic stays in the minibuffer.
++++
+** `completion-table-dynamic' by default stays in the minibuffer.
+The minibuffer will be the current buffer when the function is called.
If you want the old behavior of calling the function in the buffer
-from which the minibuffer was entered, call it with the new argument
-`switch-buffer'.
+from which the minibuffer was entered, use the new argument
+`switch-buffer' to `completion-table-dynamic'.
+---
** window-configurations no longer record the buffers' marks.
+---
** inhibit-modification-hooks now also inhibits lock-file checks, as well as
active region handling.
++++
** deactivate-mark is now buffer-local.
++++
** `cl-the' now asserts that its argument is of the given type.
-** `process-running-child-p` may now return a numeric process
++++
+** `process-running-child-p' may now return a numeric process
group ID instead of `t'.
+++
any reference to a buffer position. The 6th member of the mouse
position list returned for such events is now nil.
+---
** Menu items in keymaps do not support the "key shortcut cache" any more.
These slots used to hold key-shortcut data, but have been obsolete since
Emacs-21.
+---
** Emacs no longer downcases the first letter of a system diagnostic
when signaling a file error. For example, it now reports "Permission
denied" instead of "permission denied". The old behavior was problematic
** 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. Any third-party code that changes these templates should
+++
*** New vector QPattern.
+---
** syntax-propertize is now automatically called on-demand during forward
parsing functions like `forward-sexp'.
-** 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 hooks `prefix-command-echo-keystrokes-functions' and
+`prefix-command-preserve-state-hook' allow the definition of prefix
+commands other than the predefined `C-u'.
++++
** New functions `filepos-to-bufferpos' and `bufferpos-to-filepos'.
+These allow to convert between buffer positions and the corresponding
+file byte offsets, given the file's encoding.
++++
** The default value of `load-read-function' is now `read'.
+Previously, the default value of `nil' implied using `read'.
-** New hook `pre-redisplay-functions', a bit easier to use than pre-redisplay-function.
++++
+** New hook `pre-redisplay-functions'.
+It is a bit easier to use than `pre-redisplay-function'.
++++
** The second arg of `looking-back' should always be provided explicitly.
+Previously, it was an optional argument, now it's mandatory.
** Obsolete text properties `intangible', `point-entered', and `point-left'.
Replaced by properties `cursor-intangible' and `cursor-sensor-functions',
implemented by the new `cursor-intangible-mode' and
`cursor-sensor-mode' minor modes.
+** `inhibit-point-motion-hooks' now defaults to t and is obsolete.
+
++++
** New process type `pipe', which can be used in combination with the
`:stderr' keyword of make-process to handle standard error output
of subprocess.
++++
** New function `make-process' provides an alternative interface to
`start-process'. It allows programs to set process parameters such as
process filter, sentinel, etc., through keyword arguments (similar to
+++
** New variable `inhibit-message', when bound to non-nil, inhibits
-`message' and related functions from displaying messages the Echo
-Area. The output is still logged to the *Messages* buffer.
+`message' and related functions from displaying messages in the echo
+area. The output is still logged to the *Messages* buffer.
+++
** A new text property `inhibit-read-only' can be used in read-only
** `read-buffer' takes a new `predicate' argument.
++++
** Emacs Lisp now supports generators.
+See the "Generators" section of the ELisp manual for the details.
-** New finalizer facility for running code when objects
- become unreachable.
++++
+** New finalizer facility for running code when objects become unreachable.
+See the "Finalizer Type" subsection in the ELisp manual for the
+details.
-** lexical closures can use (:documentation <form>) to build their docstring.
-It should be placed right where the docstring would be, and <form> is then
+** lexical closures can use (:documentation FORM) to build their docstring.
+It should be placed right where the docstring would be, and FORM is then
evaluated (and should return a string) when the closure is built.
** define-inline provides a new way to define inlinable functions.
** New macro `with-file-modes', for evaluating expressions with default file
permissions set to temporary values (e.g., for creating private files).
++++
** You can access the slots of structures using `cl-struct-slot-value'.
** Function `sort' can deal with vectors.
+++
** Function `write-region' no longer outputs "Wrote FILE" in batch mode.
+---
** If `pwd' is called with a prefix argument, insert the current default
directory at point.
the name is a directory separator character (forward slash on GNU and
Unix systems, forward- or backslash on MS-Windows and MS-DOS).
+---
** ASCII approximations to curved quotes are put in standard-display-table
if the terminal cannot display curved quotes.
++++
** Standard output and error streams now transliterate characters via
standard-display-table, and encode output using locale-coding-system.
+To force a specific encoding, bind `coding-system-for-write' to the
+coding-system of your choice when invoking functions like `prin1' and
+`message'.
+++
** New var `truncate-string-ellipsis' to choose how to indicate truncation.
** Miscellaneous name change
+---
For consistency with the usual Emacs spelling, the Lisp variable
`hfy-optimisations' has been renamed to `hfy-optimizations'.
The old name should still work, as an obsolescent alias.
-\f
-* Changes in Frames and Windows Code in Emacs 25.1
+** Changes in Frame- and Window- Handling
+++
-** Emacs can now draw horizontal scroll bars on some platforms that
+*** Emacs can now draw horizontal scroll bars on some platforms that
provide toolkit scroll bars, namely Gtk+, Lucid, Motif and Windows.
Horizontal scroll bars are turned off by default.
-*** New function `horizontal-scroll-bars-available-p' telling whether
+
+**** New function `horizontal-scroll-bars-available-p' telling whether
horizontal scroll bars are available on the underlying system.
-*** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
+
+**** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
bars on all existing and future frames.
-*** New function `toggle-horizontal-scroll-bar' to toggle horizontal
+
+**** New function `toggle-horizontal-scroll-bar' to toggle horizontal
scroll bars on the selected frame.
-*** New frame parameters `horizontal-scroll-bars' and
+
+**** New frame parameters `horizontal-scroll-bars' and
`scroll-bar-height' to set horizontal scroll bars and their height
for individual frames and in `default-frame-alist'.
-*** New functions `frame-scroll-bar-height' and
+
+**** New functions `frame-scroll-bar-height' and
`window-scroll-bar-height' return the height of horizontal scroll
bars on a specific frame or window.
-*** `set-window-scroll-bars' now accepts five parameters where the last
+
+**** `set-window-scroll-bars' now accepts five parameters where the last
two specify height and type of the window's horizontal scroll bar.
-*** `window-scroll-bars' now returns type and sizes of horizontal scroll
+
+**** `window-scroll-bars' now returns type and sizes of horizontal scroll
bars too.
-*** New buffer-local variables `horizontal-scroll-bar' and
+
+**** New buffer-local variables `horizontal-scroll-bar' and
`scroll-bar-height'.
+++
-** New functions `frame-geometry' and `frame-edges' give access to a
+*** New functions `frame-geometry' and `frame-edges' give access to a
frame's geometry.
+++
-** New functions `mouse-absolute-pixel-position' and
+*** 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
+*** 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
+*** 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
+*** 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
+*** 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
the height of the frame's root window plus that of the echo area (if
present). This was already the behavior for frames with external tool
builds.
+++
-** Frames now do not necessarily preserve the number of columns or lines
+*** Frames now do not necessarily preserve the number of columns or lines
they display when setting default font, menu bar, fringe width, or
scroll bars. In particular, maximized and fullscreen frames are
conceptually never resized if such settings change. For fullheight and
fullwidth frames, the behavior may depend on the toolkit used.
-*** New option `frame-inhibit-implied-resize' if non-nil, means that
+**** New option `frame-inhibit-implied-resize' if non-nil, means that
setting default font, menu bar, fringe width, or scroll bars of a
specific frame does not resize that frame in order to preserve the
number of columns or lines it displays.
+++
-** New function `window-preserve-size' allows to preserve the size of
+*** New function `window-preserve-size' allows to preserve the size of
windows without "fixing" it. It's supported by `fit-window-to-buffer',
`temp-buffer-resize-mode' and `display-buffer'.
+++
-** New `display-buffer' action function `display-buffer-use-some-frame'.
+*** 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 minor mode `window-divider-mode' and options
+*** New minor mode `window-divider-mode' and options
`window-divider-default-places', `window-divider-default-bottom-width'
and `window-divider-default-right-width'.
-** Tearoff menus and detachable toolbars for Gtk+ has been removed.
+** Tearoff menus and detachable toolbars for Gtk+ have been removed.
Those features have been deprecated in Gtk+ for a long time.
** Etags
++++
*** etags no longer qualifies class members by default.
By default, `etags' will not qualify class members for C-like
(`xref-find-definitions'); if so, you can use `C-u M-.' to specify the
qualified names by hand.
++++
*** New language Ruby
Names of modules, classes, methods, and functions are tagged.
Overloaded operators are also tagged.
++++
*** Improved support for Lua
Etags now tags functions even if the "function" keyword follows some
+++
** 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.
+** New variable `w32-pipe-buffer-size'.
+It can be used to tune the size of the buffer of pipes created for
+communicating with subprocesses, when the program run by a subprocess
+exhibits unusual buffering behavior. Default is zero, which lets the
+OS use its default size.
+
\f
----------------------------------------------------------------------
This file is part of GNU Emacs.