* Installation Changes in Emacs 26.2
---
-** Building Emacs with the '--with-xwidgets' option now requires WebKit2
+** Building Emacs with the '--with-xwidgets' option now requires WebKit2.
To build Emacs with xwidgets support, you will need to install the
webkit2gtk-4.0 package; version 2.12 or later is required.
(This change was actually made in Emacs 26.1, but was not called out
** When GCC warnings are enabled, '--enable-check-lisp-object-type' is
now enabled by default when configuring.
-** The Emacs server now has socket-launching support. This allows
-socket based activation, where an external process like systemd can
-invoke the Emacs server process upon a socket connection event and
-hand the socket over to Emacs. Emacs uses this socket to service
-emacsclient commands. This new functionality can be disabled with the
-configure option '--disable-libsystemd'.
+** The Emacs server now has socket-launching support.
+This allows socket based activation, where an external process like
+systemd can invoke the Emacs server process upon a socket connection
+event and hand the socket over to Emacs. Emacs uses this socket to
+service emacsclient commands. This new functionality can be disabled
+with the configure option '--disable-libsystemd'.
-** A systemd user unit file is provided. Use it in the standard way:
-'systemctl --user enable emacs'.
-(If your Emacs is installed in a non-standard location, you may
-need to copy the emacs.service file to eg ~/.config/systemd/user/)
+** A systemd user unit file is provided.
+Use it in the standard way: 'systemctl --user enable emacs'. (If your
+Emacs is installed in a non-standard location, you may need to copy
+the emacs.service file to eg ~/.config/systemd/user/)
** New configure option '--disable-build-details' attempts to build an
Emacs that is more likely to be reproducible; that is, if you build
'erc-emacs-build-time'.
** Emacs can now be built with support for Little CMS.
-
If the lcms2 library is installed, Emacs will enable features built on
top of that library. The new configure option '--without-lcms2' can
be used to build without lcms2 support even if it is installed. Emacs
\f
* Changes in Emacs 26.1
-** Option 'buffer-offer-save' can be set to new value, 'always'. When
-set to 'always', the command 'save-some-buffers' will always offer
-this buffer for saving.
+** Option 'buffer-offer-save' can be set to new value, 'always'.
+When set to 'always', the command 'save-some-buffers' will always
+offer this buffer for saving.
** Security vulnerability related to Enriched Text mode is removed.
A new option 'ediff-show-ancestor' and a new toggle
'ediff-toggle-show-ancestor'.
-** TeX: Add luatex and xetex as alternatives to pdftex
+** TeX: Add luatex and xetex as alternatives to pdftex.
** Electric-Buffer-menu
** Ispell
*** Enchant is now supported as a spell-checker.
-
Enchant is a meta-spell-checker that uses providers such as Hunspell
to do the actual checking. With it, users can use spell-checkers not
directly supported by Emacs, such as Voikko, Hspell and AppleSpell,
** Flymake
-*** Flymake has been completely redesigned
-
+*** Flymake has been completely redesigned.
Flymake now annotates arbitrary buffer regions, not just lines. It
supports arbitrary diagnostic types, not just errors and warnings (see
variable 'flymake-diagnostic-types-alist').
** Term
*** 'term-char-mode' now makes its buffer read-only.
-
The buffer is made read-only to prevent changes from being made by
anything other than the process filter; and movements of point away
from the process mark are counter-acted so that the cursor is in the
** Xref
*** When an *xref* buffer is needed, 'TAB' quits and jumps to an xref.
-
A new command 'xref-quit-and-goto-xref', bound to 'TAB' in *xref*
buffers, quits the window before jumping to the destination. In many
situations, the intended window configuration is restored, just as if
*** Many variables obsoleted in 22.1 referring to face symbols.
-** The variable 'text-quoting-style' is now a customizable option. It
-controls whether to and how to translate ASCII quotes in messages and
-help output. Its possible values and their semantics remain unchanged
-from Emacs 25. In particular, when this variable's value is 'grave',
-all quotes in formats are output as-is.
+** The variable 'text-quoting-style' is now a customizable option.
+It controls whether to and how to translate ASCII quotes in messages
+and help output. Its possible values and their semantics remain
+unchanged from Emacs 25. In particular, when this variable's value is
+'grave', all quotes in formats are output as-is.
** Functions like 'check-declare-file' and 'check-declare-directory'
now generate less chatter and more-compact diagnostics. The auxiliary
to an interactively callable function as a single argument instead of
two separate arguments 'region-beginning' and 'region-end'.
-** 'parse-partial-sexp' state has a new element. Element 10 is
-non-nil when the last character scanned might be the first character
-of a two character construct, i.e., a comment delimiter or escaped
-character. Its value is the syntax of that last character.
+** 'parse-partial-sexp' state has a new element.
+Element 10 is non-nil when the last character scanned might be the
+first character of a two character construct, i.e., a comment
+delimiter or escaped character. Its value is the syntax of that last
+character.
** 'parse-partial-sexp's state, element 9, has now been confirmed as
permanent and documented, and may be used by Lisp programs. Its value
*** 'select-frame-by-name' now may return a frame on another display
if it does not find a suitable one on the current display.
-** 'tcl-auto-fill-mode' is now declared obsolete. Its functionality
-can be replicated simply by setting 'comment-auto-fill-only-comments'.
+** 'tcl-auto-fill-mode' is now declared obsolete.
+Its functionality can be replicated simply by setting
+'comment-auto-fill-only-comments'.
** New pcase pattern 'rx' to match against an rx-style regular expression.
For details, see the doc string of 'rx--pcase-macroexpander'.