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* doc/lispref/display.texi (Xwidgets): Document changes. * etc/NEWS: Announce new function. * src/xwidget.c (Fxwidget_webkit_back_forward_list): New function. (syms_of_xwidget): Define new subr.
837 lines
27 KiB
Text
837 lines
27 KiB
Text
GNU Emacs NEWS -- history of user-visible changes.
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Copyright (C) 2021 Free Software Foundation, Inc.
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See the end of the file for license conditions.
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Please send Emacs bug reports to 'bug-gnu-emacs@gnu.org'.
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If possible, use 'M-x report-emacs-bug'.
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This file is about changes in Emacs version 29.
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See file HISTORY for a list of GNU Emacs versions and release dates.
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See files NEWS.28, NEWS.27, ..., NEWS.18, and NEWS.1-17 for changes
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in older Emacs versions.
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You can narrow news to a specific version by calling 'view-emacs-news'
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with a prefix argument or by typing 'C-u C-h C-n'.
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Temporary note:
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+++ indicates that all relevant manuals in doc/ have been updated.
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--- means no change in the manuals is needed.
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When you add a new item, use the appropriate mark if you are sure it
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applies, and please also update docstrings as needed.
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* Installation Changes in Emacs 29.1
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** Emacs now installs the ".pdmp" file using a unique fingerprint in the name.
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The file is typically installed using a file name akin to
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"...dir/libexec/emacs/29.1/x86_64-pc-linux-gnu/emacs-<fingerprint>.pdmp".
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If a constant file name is required, the file can be renamed to
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"emacs.pdmp", and Emacs will find it during startup anyway.
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* Startup Changes in Emacs 29.1
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+++
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** Emacs now has a '--fingerprint' option.
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This will output a string identifying the current Emacs build.
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+++
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** New hook 'after-pdump-load-hook'.
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This is run at the end of the Emacs startup process, and it meant to
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be used to reinitialize structures that would normally be done at load
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time.
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* Changes in Emacs 29.1
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** Terminal Emacs
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---
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*** Emacs will now use 24-bit colors on terminals that support "Tc" capability.
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This is in addition to previously-supported ways of discovering 24-bit
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color support: either via the "RGB" or "setf24" capabilities, or if
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the 'COLORTERM' environment variable is set to the value "truecolor".
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** Emoji
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+++
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*** Emacs now has several new methods for inserting Emojis.
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The Emoji commands are under the new 'C-x 8 e' prefix.
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+++
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*** New command 'emoji-insert' (bound to 'C-x 8 e e' and 'C-x 8 e i').
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This command guides you through various Emoji categories and
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combinations in a graphical menu system.
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+++
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*** New command 'emoji-search' (bound to 'C-x 8 e s').
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This command lets you search for Emojis based on names.
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+++
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*** New command 'emoji-list' (bound to 'C-x 8 e l').
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This command lists all Emojis (categorized by themes) in a special
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buffer and lets you choose one of them.
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---
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*** New command 'emoji-recent' (bound to 'C-x 8 e r').
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This command lets you choose among the Emojis you have recently
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inserted.
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+++
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*** New command 'emoji-describe' (bound to 'C-x 8 e d').
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This command will tell you the name of the Emoji at point. (This
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command also works for non-Emoji characters.)
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** Help
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---
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*** 'C-h b' uses outlining by default.
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Set 'describe-bindings-outline' to nil to get the old behaviour.
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---
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*** Jumping to function/variable source now saves mark before moving point.
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Jumping to source from "*Help*" buffer moves the point when the source
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buffer is already open. Now, the old point is pushed to mark ring.
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+++
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*** New key bindings in "*Help*" buffers: 'n' and 'p'.
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These will take you (respectively) to the next and previous "page".
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---
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*** 'describe-char' now also outputs the name of emoji combinations.
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** Outline Minor Mode
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+++
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*** New user option 'outline-minor-mode-use-buttons'.
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If non-nil, Outline Minor Mode will use buttons to hide/show outlines
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in addition to the ellipsis. Default nil.
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---
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*** New user option 'outline-minor-mode-buttons'.
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This is a list of pairs of open/close strings used to display buttons.
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+++
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** Support for the WebP image format.
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This support is built by default when the libwebp library is
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available. To disable it, use the '--without-webp' configure flag.
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Image specifiers can now use ':type webp'.
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** Windows
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+++
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*** 'display-buffer' now can set up the body size of the chosen window.
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For example, a 'display-buffer-alist' entry of
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'(window-width . (body-columns . 40))'
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will make the body of the chosen window 40 columns wide. For the
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height use 'window-height' in combination with 'body-lines'.
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** Better detection of text suspiciously reordered on display.
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The function 'bidi-find-overridden-directionality' has been extended
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to detect reordering effects produced by embeddings and isolates
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(started by directional formatting control characters such as RLO and
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LRI). The new command 'highlight-confusing-reorderings' finds and
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highlights segments of buffer text whose reordering for display is
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suspicious and could be malicious.
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** Emacs server and client changes
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+++
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*** New command-line option '-r' for emacsclient.
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With this command-line option, Emacs reuses an existing graphical client
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frame if one exists; otherwise it creates a new frame.
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+++
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*** 'server-stop-automatically' can be used to automatically stop the server.
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The Emacs server will be automatically stopped when certain conditions
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are met. The conditions are given by the argument, which can be
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'empty', 'delete-frame' or 'kill-terminal'.
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* Editing Changes in Emacs 29.1
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---
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** Indentation of 'cl-flet' and 'cl-labels' has changed.
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These forms now indent like this:
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(cl-flet ((bla (x)
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(* x x)))
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(bla 42))
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This change also affects 'cl-macrolet', 'cl-flet*' and
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'cl-symbol-macrolet'.
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+++
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** New user option 'translate-upper-case-key-bindings'.
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This can be set to nil to inhibit translating upper case keys to lower
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case keys.
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+++
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** New command 'ensure-empty-lines'.
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This command increases (or decreases) the number of empty lines before
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point.
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---
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*** Improved mouse behavior with auto-scrolling modes.
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When clicking inside the 'scroll-margin' or 'hscroll-margin' region
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the point is now moved only when releasing the mouse button. This no
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longer results in a bogus selection, unless the mouse has been
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effectively dragged.
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+++
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** 'kill-ring-max' now defaults to 120.
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---
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** New user option 'yank-menu-max-items'.
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Customize this option to limit the number of entries in the menu
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"Edit->Paste from Kill Menu". The default is 60.
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** show-paren-mode
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+++
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*** New user option 'show-paren-context-when-offscreen'.
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When non-nil, if the point is in a closing delimiter and the opening
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delimiter is offscreen, shows some context around the opening
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delimiter in the echo area. Default nil.
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** Comint
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+++
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*** 'comint-term-environment' is now aware of connection-local variables.
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The user option 'comint-terminfo-terminal' and variable
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'system-uses-terminfo' can now be set as connection-local variables to
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change the terminal used on a remote host.
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* Changes in Specialized Modes and Packages in Emacs 29.1
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** Info
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---
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*** New command 'Info-goto-node-web' and key binding 'G'.
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This will take you to the gnu.org web server's version of the current
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info node. This command only works for the Emacs and Emacs Lisp manuals.
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** vc
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---
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*** 'C-x v v' on an unregistered file will now use the most specific backend.
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Previously, if you had an SVN-covered "~/" directory, and a Git-covered
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directory in "~/foo/bar", using 'C-x v v' on a new, unregistered file
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"~/foo/bar/zot" would register it in the SVN repository in "~/" instead of
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in the Git repository in "~/foo/bar". This makes this command
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consistent with 'vc-responsible-backend'.
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** Message
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---
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*** New user option 'mml-attach-file-at-the-end'.
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If non-nil, 'C-c C-a' will put attached files at the end of the message.
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---
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*** Message Mode now supports image yanking.
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** HTML Mode
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---
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*** HTML Mode now supports "text/html" and "image/*" yanking.
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** Texinfo Mode
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---
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*** 'texinfo-mode' now has a specialised 'narrow-to-defun' definition.
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It narrows to the current node.
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** eww/shr
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+++
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*** New user option 'shr-use-xwidgets-for-media'.
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If non-nil (and Emacs has been built with support for xwidgets),
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display <video> elements with an xwidget. Note that this is
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experimental, and is known to crash Emacs on some systems, and just
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doesn't work on other systems. Also see etc/PROBLEMS.
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+++
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*** New user option 'eww-url-transformers'.
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These are used to alter an URL before using it. By default it removes
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the common "utm_" trackers from URLs.
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** Gnus
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+++
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*** New user option 'gnus-treat-emojize-symbols'.
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If non-nil, symbols that have an emoji representation will be
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displayed as emojis. Default nil.
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+++
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*** New command 'gnus-article-emojize-symbols'.
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This is bound to 'W D e' and will display symbols that have emoji
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representation as emojis.
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** EIEIO
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+++
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*** 'slot-value' can now be used to read slots of 'cl-defstruct' objects.
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** align
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---
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*** Alignment in 'text-mode' has changed.
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Previously, 'M-x align' didn't do anything, and you had to say 'C-u
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M-x align' for it to work. This has now been changed. The default
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regexp for 'C-u M-x align-regexp' has also been changed to be easier
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for inexperienced users to use.
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** eww
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+++
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*** New user option to automatically rename EWW buffers.
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The 'eww-auto-rename-buffer' user option can be configured to rename
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rendered web pages by using their title, URL, or a user-defined
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function which returns a string. For the first two cases, the length
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of the resulting name is controlled by 'eww-buffer-name-length'. By
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default, no automatic renaming is performed.
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** Help
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*** New user option 'help-link-key-to-documentation'.
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When this option is non-nil (which is the default), key bindings
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displayed in the "*Help*" buffer will be linked to the documentation
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for the command they are bound to. This does not affect listings of
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key bindings and functions (such as 'C-h b').
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** info-look
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---
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*** info-look specs can now be expanded at run time instead of a load time.
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The new ':doc-spec-function' element can be used to compute the
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':doc-spec' element when the user asks for info on that particular
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mode (instead of at load time).
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** subr-x
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+++
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*** New macro 'with-memoization' provides a very primitive form of memoization.
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** ansi-color
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---
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*** Support for ANSI 256-color and 24-bit colors.
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256-color and 24-bit color codes are now handled by ANSI color
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filters and displayed with the specified color.
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** term-mode
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---
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*** Support for ANSI 256-color and 24-bit colors, italic and other fonts.
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Term-mode can now display 256-color and 24-bit color codes. It can
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also handle ANSI codes for faint, italic and blinking text, displaying
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it with new 'term-{faint,italic,slow-blink,fast-blink}' faces.
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** Xref
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*** 'project-find-file' and 'project-or-external-find-file' now accept
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a prefix argument which is interpreted to mean "include all files".
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+++
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*** New command 'xref-go-forward'.
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It is bound to 'C-M-,' and jumps to the location where 'xref-go-back'
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('M-,', also known as 'xref-pop-marker-stack') was invoked previously.
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** File notifications
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+++
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*** The new command 'file-notify-rm-all-watches' removes all file notifications.
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** Sql
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---
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*** Sql now supports sending of passwords in-process.
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To improve security, if an sql product has ':password-in-comint' set
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to t, a password supplied via the minibuffer will be sent in-process,
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as opposed to via the command-line.
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** Image Mode
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+++
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*** New command 'image-transform-fit-to-window'.
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This command fits the image to the current window by scaling down or
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up as necessary. Unlike 'image-transform-fit-both', this does not
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only scale the image down, but up as well. It is bound to "s w" in
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Image Mode by default.
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+++
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*** 'image-transform-fit-to-(height|width)' are now obsolete.
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Use the new command 'image-transform-fit-to-window' instead.
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The keybinding for 'image-transform-fit-to-width' is now 's i'.
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---
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*** User option 'image-auto-resize' can now be set to 'fit-window'.
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This works like 'image-transform-fit-to-window'.
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*** New user option 'image-auto-resize-max-scale-percent'.
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The new 'fit-window' option will never scale an image more than this
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much (in percent). It is nil by default.
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** Image-Dired
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+++
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*** 'image-dired-display-image-mode' is now based on 'image-mode'.
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This avoids converting images in the background, and makes Image-Dired
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noticeably faster. New keybindings from 'image-mode' are now
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available in the "*image-dired-display-image*" buffer; press '?' or
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'h' in that buffer to see the full list. Finally, some commands and
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user options that are no longer needed are now obsolete:
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'image-dired-cmd-create-temp-image-options',
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'image-dired-cmd-create-temp-image-program',
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'image-dired-display-current-image-full',
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'image-dired-display-current-image-sized',
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'image-dired-display-window-height-correction',
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'image-dired-display-window-width-correction',
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'image-dired-temp-image-file'.
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---
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*** Reduce dependency on external "exiftool" command.
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The 'image-dired-copy-with-exif-file-name' no longer requires an
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external "exiftool" command to be available. The user options
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'image-dired-cmd-read-exif-data-program' and
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'image-dired-cmd-read-exif-data-options' are now obsolete.
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---
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*** New command for the thumbnail buffer.
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The new command 'image-dired-unmark-all-marks' has been added. It is
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bound to 'U' in the thumbnail buffer.
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|
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---
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*** Support Thumbnail Managing Standard v0.9.0 (Dec 2020).
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This standard allows sharing generated thumbnails across different
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programs. Version 0.9.0 adds two larger thumbnail sizes: 512x512 and
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1024x1024 pixels. See the user option 'image-dired-thumbnail-storage'
|
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to use it; it is not enabled by default.
|
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|
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---
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*** Support GraphicsMagick command line tools.
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Support for the GraphicsMagick command line tool ("gm") has been
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added, and is used instead of ImageMagick when it is available.
|
||
|
||
---
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||
*** New face 'image-dired-thumb-flagged'.
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If 'image-dired-thumb-mark' is non-nil (the default), this face is
|
||
used for images that are flagged for deletion in the Dired buffer
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||
associated with Image-Dired.
|
||
|
||
---
|
||
*** The 'image-dired-slideshow-start' command has been revamped.
|
||
It no longer inconveniently prompts for a number of images and a
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delay: it runs indefinitely, but stops automatically on any command.
|
||
You can set the delay with a prefix argument, or a negative prefix
|
||
argument to prompt anyways. Customize the user option
|
||
'image-dired-slideshow-delay' to change the default, which is 5
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||
seconds. It is bound to 'S' in the thumbnail and display buffer.
|
||
|
||
---
|
||
*** Support for bookmark.el.
|
||
The command 'bookmark-set' (bound to 'C-x r m') is now supported in
|
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the thumbnail view, and will create a bookmark that opens the current
|
||
directory in Image-Dired.
|
||
|
||
+++
|
||
*** 'image-dired-show-all-from-dir-max-files' has been increased to 500.
|
||
This option controls asking for confirmation when starting Image-Dired
|
||
in a directory with many files. However, Image-Dired creates
|
||
thumbnails in the background these days, so this is not as important
|
||
as it used to be, back when entering a large directory could lock up
|
||
Emacs for tens of seconds. In addition, you can now customize this
|
||
option to nil to disable this confirmation completely.
|
||
|
||
---
|
||
*** Make 'image-dired-rotate-thumbnail-(left|right)' obsolete.
|
||
Instead, use 'M-x image-dired-refresh-thumb' to generate a new
|
||
thumbnail, or 'M-x image-rotate' to rotate the thumbnail without
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||
updating the thumbnail file.
|
||
|
||
** Dired
|
||
|
||
---
|
||
*** New user option 'dired-make-directory-clickable'.
|
||
If non-nil (which is the default), hitting 'RET' or 'mouse-1' on
|
||
the directory components at the directory displayed at the start of
|
||
the buffer will take you to that directory.
|
||
|
||
** Exif
|
||
|
||
*** New function 'exif-field'.
|
||
This is a convenience function to extract the field data from
|
||
'exif-parse-file' and 'exif-parse-buffer'.
|
||
|
||
** Xwidgets
|
||
|
||
---
|
||
*** New user option 'xwidget-webkit-buffer-name-format'.
|
||
Using this option you can control how the xwidget-webkit buffers are
|
||
named.
|
||
|
||
+++
|
||
*** New minor mode 'xwidget-webkit-edit-mode'.
|
||
When this mode is enabled, self-inserting characters and other common
|
||
web browser shortcut keys are redefined to send themselves to the
|
||
WebKit widget.
|
||
|
||
+++
|
||
*** New minor mode 'xwidget-webkit-isearch-mode'.
|
||
This mode acts similarly to incremental search, and allows to search
|
||
the contents of a WebKit widget. In xwidget-webkit mode, it is bound
|
||
to 'C-s' and 'C-r'.
|
||
|
||
---
|
||
*** On X11, the WebKit inspector is now available inside xwidgets.
|
||
To access the inspector, right click on the widget and select "Inspect
|
||
Element".
|
||
|
||
---
|
||
*** "Open in New Window" in a WebKit widget's context menu now works.
|
||
The newly created buffer will be displayed via 'display-buffer', which
|
||
can be customized through the usual mechanism of 'display-buffer-alist'
|
||
and friends.
|
||
|
||
|
||
* New Modes and Packages in Emacs 29.1
|
||
|
||
+++
|
||
** New mode 'erts-mode'.
|
||
This mode is used to edit files geared towards testing actions in
|
||
Emacs buffers, like indentation and the like. The new ert function
|
||
'ert-test-erts-file' is used to parse these files.
|
||
|
||
|
||
* Incompatible Lisp Changes in Emacs 29.1
|
||
|
||
** Fonts
|
||
|
||
---
|
||
*** Emacs now supports 'medium' fonts.
|
||
Emacs previously didn't distinguish between the 'regular'/'normal'
|
||
weight and the 'medium' weight, but it now also supports the (heavier)
|
||
'medium' weight. However, this means that if you previously specified
|
||
a weight of 'normal' and the font doesn't have this weight, Emacs
|
||
won't find the font spec. In these cases, replacing ":weight 'normal"
|
||
with ":weight 'medium" should fix the issue.
|
||
|
||
** Keymap descriptions have changed.
|
||
'help--describe-command', 'C-h b' and associated functions that output
|
||
keymap descriptions have changed. In particular, prefix commands are
|
||
not output at all, and instead of "??" for closures/functions,
|
||
"[closure]"/"[lambda]" is output.
|
||
|
||
---
|
||
** 'downcase' details have changed slightly.
|
||
In certain locales, changing the case of an ASCII-range character may
|
||
turn it into a multibyte character, most notably with "I" in Turkish
|
||
(the lowercase is "ı", 0x0131). Previously, 'downcase' on a unibyte
|
||
string was buggy, and would mistakenly just return the lower byte of
|
||
this, 0x31 (the digit "1"). 'downcase' on a unibyte string has now
|
||
been changed to downcase such characters as if they were ASCII. To
|
||
get proper locale-dependent downcasing, the string has to be converted
|
||
to multibyte first. (This goes for the other case-changing functions,
|
||
too.)
|
||
|
||
---
|
||
** Functions in 'tramp-foreign-file-name-handler-alist' have changed.
|
||
Functions to determine which Tramp file name handler to use are now
|
||
passed a file name in dissected form (via 'tramp-dissect-file-name')
|
||
instead of in string form.
|
||
|
||
---
|
||
** 'def' indentation changes.
|
||
In 'emacs-lisp-mode', forms with a symbol with a name that start with
|
||
"def" have been automatically indented as if they were 'defun'-like
|
||
forms, for instance:
|
||
|
||
(defzot 1
|
||
2 3)
|
||
|
||
This heuristic has now been removed, and all functions/macros that
|
||
want to be indented this way have to be marked with
|
||
|
||
(declare (indent defun))
|
||
|
||
or the like. If the function/macro definition itself can't be
|
||
changed, the indentation can also be adjusted by saying something
|
||
like:
|
||
|
||
(put 'defzot 'lisp-indent-function 'defun)
|
||
|
||
---
|
||
** The 'inhibit-changing-match-data' variable is now obsolete.
|
||
Instead, functions like 'string-match' and 'looking-at' now take an
|
||
optional 'inhibit-modify' argument.
|
||
|
||
---
|
||
** 'gnus-define-keys' is now obsolete.
|
||
Use 'define-keymap' instead.
|
||
|
||
---
|
||
** MozRepl has been removed from js.el.
|
||
MozRepl was removed from Firefox in 2017, so this code doesn't work
|
||
with recent versions of Firefox.
|
||
|
||
---
|
||
** The function 'image-dired-get-exif-data' is now obsolete.
|
||
Use 'exif-parse-file' and 'exif-field' instead.
|
||
|
||
|
||
* Lisp Changes in Emacs 29.1
|
||
|
||
+++
|
||
** New function 'file-name-split'.
|
||
This returns a list of all the components of a file name.
|
||
|
||
+++
|
||
** New macro 'with-undo-amalgamate'.
|
||
It records a particular sequence of operations as a single undo step.
|
||
|
||
+++
|
||
** New command 'yank-media'.
|
||
This command supports yanking non-plain-text media like images and
|
||
HTML from other applications into Emacs. It is only supported in
|
||
modes that have registered support for it, and only on capable
|
||
platforms.
|
||
|
||
+++
|
||
** New command 'yank-media-types'.
|
||
This command lets you examine all data in the current selection and
|
||
the clipboard, and insert it into the buffer.
|
||
|
||
+++
|
||
** New text property 'inhibit-isearch'.
|
||
If set, 'isearch' will skip these areas, which can be useful (for
|
||
instance) when covering huge amounts of data (that has no meaningful
|
||
searchable data, like image data) with a 'display' text property.
|
||
|
||
+++
|
||
** 'insert-image' now takes an INHIBIT-ISEARCH optional parameter.
|
||
It marks the image with the 'inhibit-isearch' text property, which
|
||
inhibits 'isearch' matching the STRING parameter.
|
||
|
||
---
|
||
** New user option 'pp-use-max-width'.
|
||
If non-nil, 'pp' will attempt to limit the line length when formatting
|
||
long lists and vectors.
|
||
|
||
---
|
||
** New function 'pp-emacs-lisp-code'.
|
||
'pp' formats general Lisp sexps. This function does much the same,
|
||
but applies formatting rules appropriate for Emacs Lisp code.
|
||
|
||
+++
|
||
** New function 'file-has-changed-p'.
|
||
This convenience function is useful when writing code that parses
|
||
files at run-time, and allows Lisp programs to re-parse files only
|
||
when they have changed.
|
||
|
||
---
|
||
** New function 'font-has-char-p'.
|
||
This can be used to check whether a specific font has a glyph for a
|
||
character.
|
||
|
||
** XDG support
|
||
|
||
*** New function 'xdg-state-home' returns 'XDG_STATE_HOME' environment variable.
|
||
This new location, introduced in the XDG Base Directory Specification
|
||
version 0.8 (8th May 2021), "contains state data that should persist
|
||
between (application) restarts, but that is not important or portable
|
||
enough to the user that it should be stored in $XDG_DATA_HOME".
|
||
|
||
+++
|
||
** New macro 'with-delayed-message'.
|
||
This macro is like 'progn', but will output the specified message if
|
||
the body takes longer to execute than the specified timeout.
|
||
|
||
---
|
||
** New function 'funcall-with-delayed-message'.
|
||
This function is like 'funcall', but will output the specified message
|
||
if the function takes longer to execute than the specified timeout.
|
||
|
||
** Locale
|
||
|
||
---
|
||
*** New variable 'current-locale-environment'.
|
||
This holds the value of the previous call to 'set-locale-environment'.
|
||
|
||
---
|
||
*** New macro 'with-locale-environment'.
|
||
This macro can be used to change the locale temporarily while
|
||
executing code.
|
||
|
||
** Tabulated List Mode
|
||
|
||
+++
|
||
*** A column can now be set to an image descriptor.
|
||
The 'tabulated-list-entries' variable now supports using an image
|
||
descriptor, which means to insert an image in that column instead of
|
||
text. See the documentation string of that variable for details.
|
||
|
||
+++
|
||
** 'define-key' now understands a new strict 'kbd' representation for keys.
|
||
The '(define-key map ["C-c M-f"] #'some-command)' syntax is now
|
||
supported, and is like the 'kbd' representation, but is stricter. If
|
||
the string doesn't represent a valid key sequence, an error is
|
||
signalled (both when evaluating and byte compiling).
|
||
|
||
+++
|
||
** :keys in 'menu-item' can now be a function.
|
||
If so, it is called whenever the menu is computed, and can be used to
|
||
calculate the keys dynamically.
|
||
|
||
+++
|
||
** New major mode 'clean-mode'.
|
||
This is a new major mode meant for debugging. It kills absolutely all
|
||
local variables and removes overlays and text properties.
|
||
|
||
+++
|
||
** 'kill-all-local-variables' can now kill all local variables.
|
||
If given the new optional KILL-PERMANENT argument, also kill permanent
|
||
local variables.
|
||
|
||
+++
|
||
** Third 'mapconcat' argument SEPARATOR is now optional.
|
||
An explicit nil always meant the empty string, now it can be left out.
|
||
|
||
---
|
||
** Themes can now be made obsolete.
|
||
Using 'make-obsolete' on a theme is now supported. This will make
|
||
'load-theme' issue a warning when loading the theme.
|
||
|
||
+++
|
||
** New function 'define-keymap'.
|
||
This function allows defining a number of keystrokes with one form.
|
||
|
||
+++
|
||
** New macro 'defvar-keymap'.
|
||
This macro allows defining keymap variables more conveniently.
|
||
|
||
---
|
||
** 'kbd' can now be used in built-in, preloaded libraries.
|
||
It no longer depends on edmacro.el and cl-lib.el.
|
||
|
||
+++
|
||
** New function 'kbd-valid-p'.
|
||
The 'kbd' function is quite permissive, and will try to return
|
||
something usable even if the syntax of the argument isn't completely
|
||
correct. The 'kbd-valid-p' predicate does a stricter check of the
|
||
syntax.
|
||
|
||
+++
|
||
** New function 'image-at-point-p'.
|
||
This function returns t if point is on a valid image, and nil
|
||
otherwise.
|
||
|
||
+++
|
||
** New function 'string-pixel-width'.
|
||
This returns the width of a string in pixels. This can be useful when
|
||
dealing with variable pitch fonts and glyphs that have widths that
|
||
aren't integer multiples of the default font.
|
||
|
||
+++
|
||
** New function 'string-glyph-split'.
|
||
This function splits a string into a list of strings representing
|
||
separate glyphs. This takes into account combining characters and
|
||
grapheme clusters.
|
||
|
||
---
|
||
** 'lookup-key' is more permissive when searching for extended menu items.
|
||
In Emacs 28.1, the behavior of 'lookup-key' was changed: when looking
|
||
for a menu item '[menu-bar Foo-Bar]', first try to find an exact
|
||
match, then look for the lowercased '[menu-bar foo-bar]'.
|
||
|
||
This has been extended, so that when looking for a menu item with a
|
||
symbol containing spaces, as in '[menu-bar Foo\ Bar]', first look for
|
||
an exact match, then the lowercased '[menu-bar foo\ bar]' and finally
|
||
'[menu-bar foo-bar]'. This further improves backwards-compatibility
|
||
when converting menus to use 'easy-menu-define'.
|
||
|
||
** xwidgets
|
||
|
||
+++
|
||
*** The function 'make-xwidget' now accepts an optional RELATED argument.
|
||
This argument is used as another widget for the newly created WebKit
|
||
widget to share settings and subprocesses with. It must be another
|
||
WebKit widget.
|
||
|
||
+++
|
||
*** New function 'xwidget-perform-lispy-event'.
|
||
This function allows you to send events to xwidgets. Usually, some
|
||
equivalent of the event will be sent, but there is no guarantee of
|
||
what the widget will actually receive.
|
||
|
||
On GTK+, only key and function key events are implemented.
|
||
|
||
+++
|
||
*** New function 'xwidget-webkit-load-html'.
|
||
This function is used to load HTML text into WebKit xwidgets
|
||
directly, in contrast to creating a temporary file to hold the
|
||
markup, and passing the URI of the file as an argument to
|
||
'xwidget-webkit-goto-uri'.
|
||
|
||
+++
|
||
*** New functions for performing searches on WebKit xwidgets.
|
||
Some new functions, such as 'xwidget-webkit-search', have been added
|
||
for performing searches on WebKit xwidgets.
|
||
|
||
+++
|
||
*** New function 'xwidget-webkit-back-forward-list'.
|
||
This function is used to obtain the history of page-loads in a given
|
||
WebKit xwidget.
|
||
|
||
+++
|
||
*** 'load-changed' xwidget events are now more detailed.
|
||
In particular, they can now have different arguments based on the
|
||
state of the WebKit widget. 'load-finished' is sent when a load has
|
||
completed, 'load-started' when a load first starts, 'load-redirected'
|
||
after a redirect, and 'load-committed' when the WebKit widget first
|
||
commits to the load.
|
||
|
||
+++
|
||
*** New event type 'xwidget-display-event'.
|
||
These events are sent whenever an xwidget requests that Emacs display
|
||
another xwidget. The only argument to this event is the xwidget that
|
||
should be displayed.
|
||
|
||
|
||
* Changes in Emacs 29.1 on Non-Free Operating Systems
|
||
|
||
** MS-Windows
|
||
|
||
+++
|
||
*** Emacs now supports system dark mode.
|
||
On Windows 10 (version 1809 and higher) and Windows 11, Emacs will now
|
||
follow the system's dark mode: GUI frames use the appropriate light or
|
||
dark title bar and scroll bars, based on the user's Windows-wide color
|
||
settings.
|
||
|
||
|
||
----------------------------------------------------------------------
|
||
This file is part of GNU Emacs.
|
||
|
||
GNU Emacs is free software: you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation, either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
GNU Emacs is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
||
|
||
|
||
Local variables:
|
||
coding: utf-8
|
||
mode: outline
|
||
paragraph-separate: "[ ]*$"
|
||
end:
|