** 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
If gnustep-config is not available, the old heuristics are used.
---
-** The configure option `--with-pkg-config-prog' has been removed.
+** The configure option '--with-pkg-config-prog' has been removed.
Use './configure PKG_CONFIG=/full/name/of/pkg-config' if you need to.
+---
+** The configure option '--with-mmdf' has been removed.
+It was no longer useful, as it relied on libraries that are no longer
+supported, and its presence led to confusion during configuration.
+This affects only the 'movemail' utility; Emacs itself can still
+process MMDF-format files as before.
+
** The configure option '--enable-silent-rules' is now the default,
and silent rules are now quieter. To get the old behavior where
'make' chatters a lot, configure with '--disable-silent-rules' or
\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.
+
\f
* Changes in Emacs 25.1
+** 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.
In particular, it now returns the average width of the font's
characters, which can be used for geometry-related calculations.
+** A new function `default-font-width' returns the average width of a
+character in the current buffer's default font. If the default face
+is remapped (see `face-remapping-alist'), the value for the remapped
+face is returned. This function complements the existing function
+`default-font-height'.
+
+** New functions `window-font-height' and `window-font-width' return
+the height and average width of characters in a specified face and
+window. If FACE is remapped (see `face-remapping-alist'), the
+function returns the information for the remapped face.
+
+** A new function `window-max-chars-per-line' returns the maximal
+number of characters that can be displayed on one line. If a face
+and/or window are provided, these values are used for the
+calculation. This function is different from `window-body-width' in
+that it accounts for (i) continuation glyphs, (ii) the size of the
+font, and (iii) the specified window.
+
+** New possible value for `system-type': nacl.
+
++++
+** 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.
+
++++
+** 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
+** Successive single-char deletions are collapsed in the undo-log just like
+successive char insertions.
+
** Unicode names entered via C-x 8 RET now use substring completion by default.
+** 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 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.
++++
+** New buffer-local `electric-pair-local-mode'.
+
\f
* Changes in Specialized Modes and Packages in Emacs 25.1
+
+** 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.
+
+** In xterms, killing text now also sets the CLIPBOARD/PRIMARY selection
+in the surrounding GUI (using the OSC-52 escape sequence). This only works
+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
+
+*** New "external" package status.
+An external package is any installed package that's not built-in and
+not from `package-user-dir', which usually means it's from an entry in
+`package-directory-list'. They are treated much like built-in
+packages, in that they cannot be deleted through the package menu and
+are not considered for upgrades.
+
+The effect, is that a user can manually place a specific version of a
+package inside `package-directory-list' and the package menu will
+always respect that.
+
+*** 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'.
+
+*** `package-menu-hide-obsolete' 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).
+This allows users to downgrade a package if a lower version is
+available.
+
+*** When filtering the package menu, keywords starting with "arc:" or
+"status:" represent package archive or status, respectively, instead
+of actual keywords.
+
+*** Most functions which involve downloading information now take an
+ASYNC argument. If it is non-nil, package.el performs the download(s)
+asynchronously.
+
+*** New variable `package-menu-async' controls whether the
+package-menu uses asynchronous downloads.
+
*** `package-install-from-buffer' and `package-install-file' work on directories.
This follows the same rules as installing from a .tar file, except the
-pkg file is optional.
** EIEIO
++++
*** The `:protection' slot option is not obeyed any more.
++++
*** The `newname' argument to constructors is optional&deprecated.
If you need your objects to be named, do it by inheriting from `eieio-named'.
++++
*** The <class>-list-p and <class>-child-p functions are declared obsolete.
++++
*** The <class> variables are declared obsolete.
++++
*** The <initarg> variables are declared obsolete.
*** defgeneric and defmethod are declared obsolete.
++++
*** `constructor' is now an obsolete alias for `make-instance'.
** ido
transformed into multipart/related messages before sending.
** pcase
-*** New UPatterns `quote' and `app'.
+*** New UPatterns `quote', `app', `cl-struct', and `eieio'.
*** New UPatterns can be defined with `pcase-defmacro'.
+++
*** New vector QPattern.
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'
---
** 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
** VC and related modes
+*** Basic push support, via `vc-push', bound to `C-x v P'.
+Implemented for Bzr, Git, Hg. As part of this change, the pre-existing
+(undocumented) command vc-hg-push now behaves slightly differently.
+
*** The new command vc-region-history shows the log+diff of the active region.
*** New option `vc-annotate-background-mode' controls whether
*** Two new faces `compare-windows-removed' and `compare-windows-added'
replace the obsolete face `compare-windows'.
+---
+*** `log-edit-insert-changelog' converts "(tiny change)" to
+"Copyright-paperwork-exempt: yes". Set `log-edit-rewrite-tiny-change'
+nil to disable this.
+
** VHDL mode supports VHDL'08.
** Calculator: decimal display mode uses "," groups, so it's more
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.
*** 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.
** 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
+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
-*** browse-url now supports the Conkeror Web Browser.
+*** Support for the Conkeror web browser.
+
+---
+*** Support for several ancient browsers is now officially obsolete.
+++
** tar-mode: new `tar-new-entry' command, allowing for new members to
---
*** gulp.el
++++
+** The character classes [:graph:] and [:print:] in regular expressions
+no longer match every multibyte character. Instead, Emacs now
+consults the Unicode character properties to determine which
+characters are graphic or printable. In particular, surrogates and
+unassigned codepoints are now rejected. If you want the old behavior,
+use [:multibyte:] instead.
+
\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.
+
+** 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.
+*** 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.
+
** read-buffer-function can now be called with a 4th argument (`predicate').
** completion-table-dynamic stays in the minibuffer.
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.
** `cl-the' now asserts that its argument is of the given type.
+** `process-running-child-p` may now return a numeric process
+group ID instead of `t'.
+
+++
** Mouse click events on mode line or header line no longer include
any reference to a buffer position. The 6th member of the mouse
denied" instead of "permission denied". The old behavior was problematic
in languages like German where downcasing rules depend on grammar.
+** (substitute-command-keys "`foo'") now returns "‘foo’".
+That is, it replaces grave accents by left single quotation marks, and
+apostrophes that match grave accents by right single quotation marks.
+As before, isolated apostrophes and characters preceded by \= are
+output as-is.
+
+++
** The character classes [:alpha:] and [:alnum:] in regular expressions
now match multibyte characters using Unicode character properties.
If you want the old behavior where they matched any character with
word syntax, use `\sw' instead.
++++
+** The `diff' command uses the unified format now. To restore the old
+behavior, set `diff-switches' to `-c'.
+
\f
* Lisp Changes in Emacs 25.1
+** New function `filepos-to-bufferpos'.
+
+** The default value of `load-read-function' is now `read'.
+
+** New hook `pre-redisplay-functions', a bit easier to use than pre-redisplay-function.
+
+** The second arg of `looking-back' should always be provided explicitly.
+
+** 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.
+
+** 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
+`make-network-process').
+
** `read-buffer' takes a new `predicate' argument.
** Emacs Lisp now supports generators.
** 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
+++
** 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.
+
---
** New utilities in subr-x.el:
*** New macros `if-let' and `when-let' allow defining bindings and to
*** 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.
+When an old-style string is copied to a help buffer it is converted to
+the new style.
+
+++
** Time-related changes:
** 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.
+
+** 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
+`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
windows without "fixing" it. It's supported by `fit-window-to-buffer',
`temp-buffer-resize-mode' and `display-buffer'.
++++
+** 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.
+
** 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
+++
** 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.
+
** OS X 10.5 or older is no longer supported.
** OS X on PowerPC is no longer supported.