This file is about changes in Emacs version 25.
+See file HISTORY for a list of GNU Emacs versions and release dates.
See files NEWS.24, NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
and NEWS.1-17 for changes in older Emacs versions.
+++
** Building Emacs now requires C99 or later.
++++
** 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
+This builds Emacs with Cairo drawing. As a side effect, it provides
+support for built-in printing, when Emacs was built with GTK+.
** By default, Emacs no longer works on IRIX. We expect that Emacs
users are not affected by this, as SGI stopped supporting IRIX in
It has no particular connection to Emacs and has not changed in years,
so if you want to use it, you can always take a copy from an older Emacs.
+** Emacs 25 comes with a new set of icons.
+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.
+
\f
* Startup Changes in Emacs 25.1
\f
* Changes in Emacs 25.1
+** Any file of the form .dir-locals*.el is now considered a dir-local
+ file, and multiple can be used in the same directory. See the
+ variable `dir-locals-file' for more information.
** `xref-find-definitions' and `describe-function' now display
information about mode local overrides (defined by
cedet/mode-local.el `define-overloadable-function' and
** New doc command `describe-symbol'. Works for functions, vars, faces, etc...
+** New user option `search-default-regexp-mode' specifies the default mode for isearch
+
** `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
\f
* Changes in Specialized Modes and Packages in Emacs 25.1
+** New function `bookmark-set-no-overwrite' bound to C-x r M.
+It raises an error if a bookmark of that name already exists,
+unlike `bookmark-set' which silently updates an existing bookmark.
+
+** JSON
+---
+*** `json-pretty-print' and `json-pretty-print-buffer' now maintain
+the ordering of object keys by default.
+---
+*** New commands `json-pretty-print-ordered' and
+`json-pretty-print-buffer-ordered' pretty prints JSON objects with
+object keys sorted alphabetically.
+
** 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
+** Prettify Symbols mode
+*** 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).
+*** Symbols can be unprettified while point is inside them.
+New variable `prettify-symbols-unprettify-at-point' configures this.
+
** New `xterm-screen-extra-capabilities' config.
** The `save-place' variable is replaced by a `save-place-mode'.
(add-to-list 'display-buffer-alist
'("^\\*shell\\*$" . (display-buffer-same-window))).
-
** EIEIO
+++
*** The `:protection' slot option is not obeyed any more.
*** If `quick-calc' is called with a prefix argument, insert the
result of the calculation into the current buffer.
++++
+** In Edebug, you can now set the initial mode with C-x C-a C-m. With
+this you can tell Edebug not to stop at the start of the first
+instrumented function.
+
** ElDoc
*** New minor mode `global-eldoc-mode'
*** `eldoc-documentation-function' now defaults to `ignore'
** cl-lib
*** New functions cl-fresh-line, cl-digit-char-p and cl-parse-integer.
-** seq
-*** New seq library:
-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.
-
-** 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
+++
** 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
+** sh-script
+*** In sh-mode you can now use `sh-shell' as a file-local variable to
specify the type of shell in use (bash, csh, etc).
+*** New value `always' for sh-indent-after-continuation.
+This provides old-style ("dumb") indentation of continued lines.
+
** TLS
---
*** Fatal TLS errors are now silent by default.
** Tramp
++++
+*** New connection method "afp", which allows to access Mac OS X
+volumes via the Apple Filing Protocol.
+
++++
*** New connection method "nc", which allows to access dumb busyboxes.
++++
*** Method-specific parameters can be overwritten now with variable
`tramp-connection-properties'.
+---
+*** Handler for `file-notify-valid-p' for remote machines that support
+filesystem notifications.
+
** SQL mode
*** New user variable `sql-default-directory' enables remote
** tar-mode: new `tar-new-entry' command, allowing for new members to
be added to the archive.
+---
** Autorevert: dired buffers are also auto-reverted via file
notifications, if Emacs is compiled with file notification support.
+** File Notifications
+
++++
+*** The new event `stopped' signals, that a file notification watch is
+not active any longer.
+
++++
+*** The new function `file-notify-valid-p' checks, whether a file
+notification descriptor still corresponds to an activate watch.
+
+** Dired
+
++++
+*** The command `dired-do-compress' bound to `Z' now can compress
+directories and decompress zip files.
+
++++
+*** New command `dired-do-compress-to' bound to `c' can be used to
+compress many marked files into a single named archive. The
+compression command is determined from the new
+`dired-compress-files-alist' variable.
+
** Obsolete packages
---
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.
+
\f
* Incompatible Lisp Changes in Emacs 25.1
+** `syntax-begin-function' is declared obsolete.
+Removed font-lock-beginning-of-syntax-function and the SYNTAX-BEGIN
+slot in font-lock-defaults.
+
+++
** `package-initialize' now sets `package-enable-at-startup' to nil if
called during startup. Users who call this function in their init
** 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.
++++
+** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
+The new behavior is compatible with Common Lisp and with XEmacs.
+This change does not affect Lisp code intended to be portable to
+Emacs 24.2 and earlier, which did not support unary ‘/’.
+
++++
+** The `default-directory' value doesn't have to end slash. To make
+that happen, `unhandled-file-name-directory' now defaults to calling
+`file-name-as-directory'.
+
\f
* Lisp Changes in Emacs 25.1
+** 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.
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.
+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.