diff options
Diffstat (limited to 'etc/NEWS')
| -rw-r--r-- | etc/NEWS | 1533 |
1 files changed, 1419 insertions, 114 deletions
@@ -24,7 +24,17 @@ applies, and please also update docstrings as needed. * Installation Changes in Emacs 28.1 -** Cairo graphics library is now used by default if found. +** Emacs now optionally supports native compilation of Lisp files. +To enable this, configure Emacs with the '--with-native-compilation' option. +This requires the libgccjit library to be installed and functional, +and also requires GCC and Binutils to be available when Lisp code is +natively compiled. See the Info node "(elisp) Native Compilation" for +more details. + +--- +** Support for building with Motif has been removed. + +** The Cairo graphics library is now used by default if present. '--with-cairo' is now the default, if the appropriate development files are found by 'configure'. Note that building with Cairo means using Pango instead of libXFT for font support. Since Pango 1.44 has @@ -64,6 +74,11 @@ shaping, so 'configure' now recommends that combination. It was declared obsolete in Emacs 27.1. --- +** The configure option '--without-makeinfo' has been removed. +This was only ever relevant when building from a repository checkout. +This now requires makeinfo, which is part of the texinfo package. + +--- ** Support for building with '-fcheck-pointer-bounds' has been removed. GCC has withdrawn the '-fcheck-pointer-bounds' option and support for its implementation has been removed from the Linux kernel. @@ -76,15 +91,82 @@ proper pty support that Emacs needs. * Startup Changes in Emacs 28.1 +--- +** File names given on the command line will now be pushed onto +'file-name-history'. + +--- +** In GTK builds, Emacs now supports startup notification. +This means that Emacs won't steal keyboard focus upon startup +(when started via the Desktop) if the user is typing into another +application. + ** Emacs can support 24-bit color TTY without terminfo database. If your text-mode terminal supports 24-bit true color, but your system lacks the terminfo database, you can instruct Emacs to support 24-bit true color by setting 'COLORTERM=truecolor' in the environment. This is useful on systems such as FreeBSD which ships only with "etc/termcap". +** Emacs now supports loading a Secure Computing filter. +This is supported only on capable GNU/Linux systems. To activate, +invoke Emacs with the '--seccomp=FILE' command-line option. FILE must +name a binary file containing an array of 'struct sock_filter' +structures. Emacs will then install that list of Secure Computing +filters into its own process early during the startup process. You +can use this functionality to put an Emacs process in a sandbox to +avoid security issues when executing untrusted code. See the manual +page for 'seccomp' system call, for details about Secure Computing +filters. + +** Setting 'fill-column' to nil is obsolete. +This undocumented use of 'fill-column' is now obsolete. To disable +auto filling, turn off 'auto-fill-mode' instead. + +For instance, you could add something like the following to your init +file: + + (add-hook 'foo-mode-hook (lambda () (auto-fill-mode -1)) + * Changes in Emacs 28.1 +** 'blink-cursor-mode' is now enabled by default regardless of the UI. +It used to be enabled when Emacs is started in GUI mode but not when started +in text mode. The cursor still only actually blinks in GUI frames. + +--- +** 'auto-composition-mode' can now be selectively disabled on some TTYs. +Some text-mode terminals produce display glitches trying to compose +characters. The 'auto-composition-mode' can now have a string value +that names a terminal type; if the value returned by the 'tty-type' +function compares equal with that string, automatic composition will +be disabled in windows shown on that terminal. The Linux terminal +sets this up by default. + ++++ +** Etags now supports the Mercury programming language. +See https://mercurylang.org. + ++++ +** Etags command line option '--declarations' now has Mercury-specific behavior. +All Mercury declarations are tagged by default. However, for +compatibility with 'etags' support for Prolog, predicates and +functions appearing first in clauses will also be tagged if 'etags' is +invoked with the '--declarations' command-line option. + ++++ +** New command 'font-lock-update', bound to 'C-x x f'. +This command updates the syntax highlighting in this buffer. + ++++ +** A new standard face 'font-lock-doc-markup-face'. +Intended for documentation mark-up syntax and tags inside text that +uses 'font-lock-doc-face', with which it should harmonise. It would +typically be used in structured documentation comments in program +source code by language-specific modes, for mark-up conventions like +Haddock, Javadoc or Doxygen. By default this face inherits from +'font-lock-constant-face'. + ** The new NonGNU ELPA archive is enabled by default alongside GNU ELPA. +++ @@ -115,6 +197,12 @@ behavior, which mixed these two, can be approximated by customizing nor t. +++ +** New user option 'read-minibuffer-restore-windows'. +When customized to nil, it uses 'minibuffer-restore-windows' in +'minibuffer-exit-hook' to remove only the window showing the +"*Completions*" buffer. + ++++ ** New system for displaying documentation for groups of functions. This can either be used by saying 'M-x shortdoc-display-group' and choosing a group, or clicking a button in the "*Help*" buffers when @@ -122,7 +210,7 @@ looking at the doc string of a function that belongs to one of these groups. --- -** Improved "find definition" feature of *Help* buffers. +** Improved "find definition" feature of "*Help*" buffers. Now clicking on the link to find the definition of functions generated by 'cl-defstruct', or variables generated by 'define-derived-mode', for example, will go to the exact place where they are defined. @@ -154,7 +242,7 @@ commands. ** Support for '(box . SIZE)' 'cursor-type'. By default, 'box' cursor always has a filled box shape. But if you specify 'cursor-type' to be '(box . SIZE)', the cursor becomes a hollow -box if the point is on an image larger than 'SIZE' pixels in any +box if the point is on an image larger than SIZE pixels in any dimension. +++ @@ -185,6 +273,12 @@ This works in text buffers and over images. Typing a numeric prefix arg The value is saved in the user option 'mouse-wheel-scroll-amount-horizontal'. --- +** New choice 'permanent' for 'shift-select-mode'. +When the mark was activated by shifted motion keys, +non-shifted motion keys don't deactivate the mark +after customizing 'shift-select-mode' to 'permanent'. + +--- ** The default value of 'frame-title-format' and 'icon-title-format' has changed. These variables are used to display the title bar of visible frames and the title bar of an iconified frame. They now show the name of @@ -240,14 +334,90 @@ search buffer due to too many matches being highlighted. +++ ** A new keymap for buffer actions has been added. The 'C-x x' keymap now holds keystrokes for various buffer-oriented -commands. The new keystrokes are 'C-x x g' ('revert-buffer'), +commands. The new keystrokes are 'C-x x g' ('revert-buffer-quick'), 'C-x x r' ('rename-buffer'), 'C-x x u' ('rename-uniquely'), 'C-x x n' -('clone-buffer'), 'C-x x i' ('insert-buffer') and 'C-x x t' -('toggle-truncate-lines'). +('clone-buffer'), 'C-x x i' ('insert-buffer'), 'C-x x t' +('toggle-truncate-lines') and 'C-x x f' ('font-lock-update'). + +--- +** Commands 'set-frame-width' and 'set-frame-height' can now get their +input using the minibuffer. + +--- +** New help window when Emacs prompts before opening a large file. +Commands like 'find-file' or 'visit-tags-table' ask to visit a file +normally or literally when the file is larger than a certain size (by +default, 9.5 MiB). Press '?' or 'C-h' in that prompt to read more +about the different options to visit a file, how you can disable the +prompt, and how you can tweak the file size threshold. + ++++ +** New user option 'query-about-changed-file'. +If non-nil (the default), users are prompted as before when +re-visiting a file that has changed externally after it was visited +the first time. If nil, the user is not prompted, but instead the +buffer is opened with its contents before the change, and the user is +given instructions how to revert the buffer. + ++++ +** Improved support for terminal emulators that encode the Meta flag. +Some terminal emulators set the 8th bit of Meta characters, and then +encode the resulting character code as if it were non-ASCII character +above codepoint 127. Previously, the only way of using these in Emacs +was to set up the terminal emulator to use the 'ESC' characters to send +Meta characters to Emacs, e.g., send "ESC x" when the user types +'M-x'. You can now avoid the need for this setup of such terminal +emulators by using the new input-meta-mode with the special value +'encoded' with these terminal emulators. + ++++ +** New frame parameter 'drag-with-tab-line'. +This parameter, similar to 'drag-with-header-line', allows moving frames +by dragging the tab lines of their topmost windows with the mouse. * Editing Changes in Emacs 28.1 +** New value 'save-some-buffers-root' of 'save-some-buffers-default-predicate'. +It allows to ask about saving only files under the project root +or in subdirectories of the directory that was default during +command invocation. + +--- +** Dragging a file to Emacs will now also push the name of the file +onto 'file-name-history'. + ++++ +** A prefix arg now causes 'delete-other-frames' to only iconify frames. + +** Menus + ++++ +*** New minor mode 'context-menu-mode' for context menus popped by 'mouse-3'. +When this mode is enabled, clicking 'down-mouse-3' anywhere in the buffer +pops up a menu whose contents depends on surrounding context near the +mouse click. You can change the order of the default sub-menus in the +context menu by customizing the user option 'context-menu-functions'. + ++++ +*** The "Edit => Clear" menu item now obeys a rectangular region. + ++++ +** New command 'execute-extended-command-for-buffer'. +This new command, bound to 'M-S-x', works like +'execute-extended-command', but limits the set of commands to the +commands that have been determined to be particularly useful with the +current mode. + ++++ +** New user option 'read-extended-command-predicate'. +This user option controls how 'M-x' performs completion of commands when +you type 'TAB'. By default, any command that matches what you have +typed is considered a completion candidate, but you can customize this +option to exclude commands that are not applicable to the current +buffer's major and minor modes, and respect the command's completion +predicate (if any). + --- ** 'eval-expression' now no longer signals an error on incomplete expressions. Previously, typing 'M-: ( RET' would result in Emacs saying "End of @@ -262,12 +432,14 @@ forms, but this command has now been changed to work more like 'eval-defun', and reset the values as specified. +++ -** Standalone 'M-y' uses the minibuffer to complete previous kills. -When 'M-y' is typed not after a yank command, it activates the minibuffer -where you can browse previous kills using the minibuffer history or -completion. In Isearch, you can bind 'C-s M-y' to the command -'isearch-yank-pop' that uses the minibuffer with completion on -previous kills to read a string and append it to the search string. +** Standalone 'M-y' allows interactive selection from previous kills. +'M-y' can now be typed after a command that is not a yank command. +When invoked like that, it prompts in the minibuffer for one of the +previous kills, offering completion and minibuffer-history navigation +through previous kills recorded in the kill ring. A similar feature +in Isearch can be invoked if you bind 'C-s M-y' to the command +'isearch-yank-pop'. When the user option 'yank-from-kill-ring-rotate' +is nil the kill ring is not rotated after 'yank-from-kill-ring'. --- ** New user options 'copy-region-blink-delay' and 'delete-pair-blink-delay'. @@ -286,10 +458,12 @@ Additionally, the function now accepts a HIST argument which can be used to specify a custom history variable. +++ -** Input history for 'goto-line' is now local to every buffer. -Each buffer will keep a separate history of line numbers used with -'goto-line'. This should help making faster the process of finding -line numbers that were previously jumped to. +** Input history for 'goto-line' can now be made local to every buffer. +In any event, line numbers used with 'goto-line' are kept in their own +history list. This should help make faster the process of finding +line numbers that were previously jumped to. By default, all buffers +share a single history list. To make every buffer have its own +history list, customize the user option 'goto-line-history-local'. +++ ** New command 'goto-line-relative' to use in a narrowed buffer. @@ -315,9 +489,10 @@ setting the variable 'auto-save-visited-mode' buffer-locally to nil. description of the properties. Likewise 'button-describe' does the same for a button. -** Obsolete commands are no longer hidden from command completion. +** Obsolete aliases are no longer hidden from command completion. Completion of command names now considers obsolete aliases as -candidates. Invoking a command via an obsolete alias now mentions the +candidates, if they were marked obsolete in the current major version +of Emacs. Invoking a command via an obsolete alias now mentions the obsolescence fact and shows the new name of the command. +++ @@ -333,29 +508,99 @@ trying to be non-destructive. This command opens a new buffer called "*Memory Report*" and gives a summary of where Emacs is using memory currently. ++++ +** New user option 'isearch-repeat-on-direction-change'. +When this option is set, direction changes in Isearch move to another +search match, if there is one, instead of moving point to the other +end of the current match. + ** Outline +++ *** New commands to cycle heading visibility. -Typing 'TAB' on a heading cycles the current section between "hide -all", "subheadings", and "show all" state. Typing 'S-TAB' anywhere in -the buffer cycles the whole buffer between "only top-level headings", -"all headings and subheadings", and "show all" states. +Typing 'TAB' on a heading line cycles the current section between +"hide all", "subheadings", and "show all" states. Typing 'S-TAB' +anywhere in the buffer cycles the whole buffer between "only top-level +headings", "all headings and subheadings", and "show all" states. + ++++ +*** New user option 'outline-minor-mode-cycle'. +This user option customizes 'outline-minor-mode', with the difference +that 'TAB' and 'S-TAB' on heading lines cycle heading visibility. +Typing 'TAB' on a heading line cycles the current section between +"hide all", "subheadings", and "show all" states. Typing 'S-TAB' on a +heading line cycles the whole buffer between "only top-level +headings", "all headings and subheadings", and "show all" states. + +--- +*** New user option 'outline-minor-mode-highlight'. +This user option customizes 'outline-minor-mode'. It puts +highlighting on heading lines using standard outline faces. This +works well only when there are no conflicts with faces used by the +major mode. + ++++ +** New commands 'copy-matching-lines' and 'kill-matching-lines'. +These commands are similar to the command 'flush-lines', +but add the matching lines to the kill ring as a single string, +including the newlines that separate the lines. * Changes in Specialized Modes and Packages in Emacs 28.1 -** 'blink-cursor-mode' is now enabled by default regardless of the UI. -It used to be enabled when Emacs is started in GUI mode but not when started -in text mode. The cursor still only actually blinks in GUI frames. +** Completion List Mode +New key bindings have been added: 'n' and 'p' to navigate completions, +and 'M-g M-c' to switch to the minibuffer, and you can also switch back +to the completion list buffer with 'M-g M-c'. + +** Benchmark +*** New function 'benchmark-call' to measure the execution time of a function. +Additionally, the number of repetitions can be expressed as a minimal duration +in seconds. + +** Macroexp +--- +*** New function 'macroexp-file-name' to know the name of the current file. +--- +*** New function 'macroexp-compiling-p' to know if we're compiling. +--- +*** New function 'macroexp-warn-and-return' to help emit warnings. +This used to be named 'macroexp--warn-and-return' and has proved useful +and well-behaved enough to lose the "internal" marker. + +** Bindat + ++++ +*** New 'Bindat type expression' description language. +This new system is provided by the new macro 'bindat-type' and +obsoletes the old data layout specifications. It supports +arbitrary-size integers, recursive types, and more. See the Info node +"(elisp) Byte Packing" in the ELisp manual for more details. ** pcase +++ +*** The 'or' pattern now binds the union of the vars of its sub-patterns. +If a variable is not bound by the subpattern that matched, it gets bound +to nil. This was already sometimes the case, but it is now guaranteed. + ++++ *** The 'pred' pattern can now take the form '(pred (not FUN))'. This is like '(pred (lambda (x) (not (FUN x))))' but results in better code. +--- +*** New function 'pcase-compile-patterns' to write other macros. + +*** Added 'cl-type' pattern. +The new 'cl-type' pattern compares types using 'cl-typep', which allows +comparing simple types like '(cl-type integer)', as well as forms like +'(cl-type (integer 0 10))'. + +*** New macro 'pcase-setq' +This macro is the 'setq' equivalent of 'pcase-let', which allows for +destructuring patterns in a 'setq' form. + +++ ** profiler.el The results displayed by 'profiler-report' now have the usage figures @@ -376,6 +621,21 @@ When emacsclient connects, Emacs will (by default) output a message about how to exit the client frame. If 'server-client-instructions' is set to nil, this message is inhibited. ++++ +*** New command 'server-edit-abort'. +This command (not bound to any key by default) can be used to abort +an edit instead of marking it as "Done" (which the 'C-x #' command +does). The 'emacsclient' program exits with an abnormal status as +result of this command. + ++++ +*** New desktop integration for connecting to the server. +If your operating system’s desktop environment is +freedesktop.org-compatible (which is true of most GNU/Linux and other +recent Unix-like GUIs), you may use the new "Emacs (Client)" desktop +menu entry to open files in an existing Emacs instance rather than +starting a new one. The daemon starts if not already running. + ** Perl mode --- @@ -384,8 +644,15 @@ This is used to fontify non-scalar variables. ** Python mode +--- +*** New user option 'python-forward-sexp-function'. +This allows the user to easier customize whether to use block-based +navigation or not. + +--- *** 'python-shell-interpreter' now defaults to python3 on systems with python3. +--- *** 'C-c C-r' can now be used on arbitrary regions. The command previously extended the start of the region to the start of the line, but will now actually send the marked region, as @@ -393,10 +660,40 @@ documented. ** Ruby mode +--- *** 'ruby-use-smie' is declared obsolete. SMIE is now always enabled and 'ruby-use-smie' only controls whether indentation is done using SMIE or with the old ad-hoc code. +** Icomplete + +--- +*** New user option 'icomplete-matches-format'. +This allows controlling the current/total number of matches for the +prompt prefix. + ++++ +*** New minor modes 'icomplete-vertical-mode' and 'fido-vertical-mode' +These modes modify Icomplete ('M-x icomplete-mode') and Fido ('M-x +fido-mode'), to display completions candidates vertically instead of +horizontally. In Icomplete, completions are rotated and selection +kept at the top. In Fido, completions scroll like a typical dropdown +widget. Both these new minor modes will first turn on their +non-vertical counterparts first, if they are not on already. + +--- +*** Default value of 'icomplete-compute-delay' has been changed to 0.15 s. + +--- +*** Default value of 'icomplete-max-delay-chars' has been changed to 2. + +--- +*** Reduced blinking while completing the next completions set. +Icomplete doesn't hide the hint with the previously computed +completions anymore when compute delay is in effect, or the previous +computation has been aborted by input. Instead it shows the previous +completions until the new ones are ready. + --- ** Specific warnings can now be disabled from the warning buffer. When a warning is displayed to the user, the resulting buffer now has @@ -410,9 +707,29 @@ disabled entirely. --- *** Autoload the main entry point 'mspool-show'. +** Windmove + ++++ +*** New user options to customize windmove keybindings. +These options include 'windmove-default-keybindings', +'windmove-display-default-keybindings', +'windmove-delete-default-keybindings', +'windmove-swap-states-default-keybindings'. + ** Windows +++ +*** New user option 'delete-window-choose-selected'. +This allows to choose a frame's selected window after deleting the +previously selected one. + ++++ +*** New argument NO-OTHER for some window functions. +'get-lru-window', ‘get-mru-window’ and 'get-largest-window' now accept a +new optional argument NO-OTHER which, if non-nil, avoids returning a +window whose 'no-other-window' parameter is non-nil. + ++++ *** New 'display-buffer' function 'display-buffer-use-least-recent-window'. This is like 'display-buffer-use-some-window', but won't reuse the current window, and when called repeatedly will try not to reuse a @@ -431,6 +748,7 @@ of the next command to be displayed in a new window. ** Frames ++++ *** The key prefix 'C-x 5 5' displays next command buffer in a new frame. It's bound to the command 'other-frame-prefix' that requests the buffer of the next command to be displayed in a new frame. @@ -455,9 +773,44 @@ It can be used to enable/disable the tab bar individually on each frame independently from the value of 'tab-bar-mode' and 'tab-bar-show'. --- +*** New user option 'tab-bar-format' defines a list of tab bar items. +When it contains 'tab-bar-format-global' (possibly appended after +'tab-bar-format-align-right'), then after enabling 'display-time-mode' +(or any other mode that uses 'global-mode-string') it displays time +aligned to the right on the tab bar instead of the mode line. +When 'tab-bar-format-tabs' is replaced with 'tab-bar-format-tabs-groups', +then the tab bar displays tab groups. + +--- +*** 'Mod-9' bound to 'tab-last' now switches to the last tab. +It also supports a negative argument. + +--- +*** New command 'tab-duplicate' bound to 'C-x t n'. + +--- +*** 'C-x t N' creates a new tab at the specified absolute position. +It also supports a negative argument. + +--- +*** 'C-x t M' moves the current tab to the specified absolute position. +It also supports a negative argument. + +--- +*** 'C-x t G' assigns a group name to the tab. +'tab-close-group' can close all tabs that belong to the selected group. +The user option 'tab-bar-new-tab-group' defines the default group of a +new tab. After customizing 'tab-bar-tab-post-change-group-functions' +to 'tab-bar-move-tab-to-group', changing the tab group will also move it +closer to other tabs in the same group. + +--- *** New user option 'tab-bar-tab-name-format-function'. --- +*** New user option 'tab-line-tab-name-format-function'. + +--- *** The tabs in the tab line can now be scrolled using horizontal scroll. If your mouse or trackpad supports it, you can now scroll tabs when the mouse pointer is in the tab line by scrolling left or right. @@ -482,6 +835,22 @@ faces in other ways. *** The new command 'recenter-current-error', bound to 'l' in Occur or compilation buffers, recenters the current displayed occurrence/error. +*** Matches in target buffers are now highlighted as in 'compilation-mode'. +The method of highlighting is specified by the user options +'next-error-highlight' and 'next-error-highlight-no-select'. + +--- +*** A fringe arrow in the "*Occur*" buffer indicates the selected match. + +--- +*** Occur mode may use a different type for 'occur-target' property values. +The value was previously always a marker set to the start of the first +match on the line but can now also be a list of '(BEGIN . END)' pairs +of markers delimiting each match on the line. +This is a fully compatible change to the internal occur-mode +implementation, and code creating their own occur-mode buffers will +work as before. + ** EIEIO +++ @@ -489,6 +858,11 @@ compilation buffers, recenters the current displayed occurrence/error. It is now defined as a generalized variable that can be used with 'setf' to modify the value stored in a given class slot. +--- +*** 'form' in '(eql form)' specializers in 'cl-defmethod' is now evaluated. +This corresponds to the behavior of defmethod in Common Lisp Object System. +For compatibility, '(eql SYMBOL)' does not evaluate SYMBOL, for now. + ** New minor mode 'cl-font-lock-built-in-mode' for 'lisp-mode'. The mode provides refined highlighting of built-in functions, types, and variables. @@ -529,6 +903,11 @@ time zones will use a form like "+0100" instead of "CET". ** Dired ++++ +*** New user option 'dired-kill-when-opening-new-dired-buffer'. +If non-nil, Dired will kill the current buffer when selecting a new +directory to display. + --- *** Behavior change on 'dired-clean-confirm-killing-deleted-buffers'. Previously, if 'dired-clean-up-buffers-too' was non-nil, and @@ -542,6 +921,18 @@ line, and allows truncating them (to preserve space on the mode line) or showing them literally, either instead of, or in addition to, displaying "by name" or "by date" sort order. ++++ +*** New user option 'dired-compress-directory-default-suffix'. +This user option controls default suffix for compressing a directory. +If it's nil, ".tar.gz" will be used. Refer to +'dired-compress-files-alist' for a list of supported suffixes. + ++++ +*** New user option 'dired-compress-file-default-suffix'. +This user option controls the default suffix for compressing files. +If it's nil, ".gz" will be used. Refer to 'dired-compress-file-alist' +for a list of supported suffixes. + --- *** Broken and circular links are shown with the 'dired-broken-symlink' face. @@ -565,6 +956,11 @@ If set to non-nil, Dired will dereference symbolic links when copying. This can be switched off on a per-usage basis by providing 'dired-do-copy' with a 'C-u' prefix. +*** New user option 'dired-do-revert-buffer'. +Non-nil reverts the destination Dired buffer after performing one +of these operations: 'dired-do-copy', 'dired-do-rename', +'dired-do-symlink', 'dired-do-hardlink'. + *** New user option 'dired-mark-region' affects all Dired commands that mark files. When non-nil and the region is active in Transient Mark mode, then Dired commands operate only on files in the active @@ -602,10 +998,11 @@ This is used when expanding commit messages from 'vc-print-root-log' and similar commands. --- -*** New faces for 'vc-dir' buffers and their Git VC backend. +*** New faces for 'vc-dir' buffers. Those are: 'vc-dir-header', 'vc-dir-header-value', 'vc-dir-directory', 'vc-dir-file', 'vc-dir-mark-indicator', 'vc-dir-status-warning', -'vc-dir-status-edited', 'vc-dir-status-up-to-date', 'vc-dir-ignored'. +'vc-dir-status-edited', 'vc-dir-status-up-to-date', +'vc-dir-status-ignored'. --- *** The responsible VC backend is now the most specific one. @@ -635,9 +1032,36 @@ If non-nil, only branches and remotes are considered when doing completion over Git branch names. The default is nil, which causes tags to be considered as well. +--- +*** New user option 'vc-git-log-switches'. +String or list of strings specifying switches for Git log under VC. + ** Gnus +++ +*** New user option 'gnus-topic-display-predicate'. +This can be used to inhibit the display of some topics completely. + ++++ +*** nnimap now supports the oauth2.el library. + ++++ +*** New Summary buffer sort options for extra headers. +The extra header sort option ('C-c C-s C-x') prompts for a header +and fails if no sort function has been defined. Sorting by +Newsgroups ('C-c C-s C-u') has been pre-defined. + ++++ +*** The '#' command in the Group and Summary buffer now toggles, +instead of sets, the process mark. + ++++ +*** New user option 'gnus-process-mark-toggle'. +If non-nil (the default), the '#' command in the Group and Summary +buffers will toggle, instead of set, the process mark. + + ++++ *** New user option 'gnus-registry-register-all'. If non-nil (the default), create registry entries for all messages. If nil, don't automatically create entries, they must be created @@ -785,10 +1209,13 @@ instances. Emacs can be defined as a handler for the "x-scheme-handler/mailto" MIME type with the following command: "emacs -f message-mailto %u". An "emacs-mail.desktop" file has been included, suitable for -installing in desktop directories like "/usr/share/applications". +installing in desktop directories like "/usr/share/applications" or +"~/.local/share/applications". Clicking on a 'mailto:' link in other applications will then open Emacs with headers filled out according to the link, e.g. -"mailto:larsi@gnus.org?subject=This+is+a+test". +"mailto:larsi@gnus.org?subject=This+is+a+test". If you prefer +emacsclient, use "emacsclient -e '(message-mailto "%u")'" +or "emacsclient-mail.desktop". --- *** Change to default value of 'message-draft-headers' user option. @@ -807,10 +1234,34 @@ take the actual screenshot, and defaults to "ImageMagick import". ** Smtpmail +++ +*** smtpmail now supports using the oauth2.el library. + ++++ +*** New user option 'smtpmail-store-queue-variables'. +If non-nil, SMTP variables will be stored together with the queued +messages, and will then be used when sending with +'M-x smtpmail-send-queued-mail'. + ++++ *** Allow direct selection of smtp authentication mechanism. A server entry retrieved by auth-source can request a desired smtp authentication mechanism by setting a value for the key 'smtp-auth'. +** Search and Replace + +*** New key 'M-s M-.' starts isearch with the thing found at point. +This key is bound to the new command 'isearch-forward-thing-at-point'. +The new user option 'isearch-forward-thing-at-point' defines +a list of symbols to try to get the "thing" at point. By default, +the first element of the list is 'region' that tries to yank +the currently active region to the search string. + +*** New user option 'isearch-wrap-pause' defines how to wrap the search. +There are choices to disable wrapping completely and to wrap immediately. +When wrapping immediately, it consistently handles the numeric arguments +of 'C-s' ('isearch-repeat-forward') and 'C-r' ('isearch-repeat-backward'), +continuing with the remaining count after wrapping. + ** Grep +++ @@ -826,17 +1277,76 @@ grep-like tools. On systems where the grep command supports it, directories will be skipped. +*** Commands that use 'grep-find' now follow symlinks for command-line args. +This is because the default value of 'grep-find-template' now includes +the 'find' option '-H'. Commands that use that variable, including +indirectly via a call to 'xref-matches-in-directory', might be +affected. In particular, there should be no need anymore to ensure +any directory names on the 'find' command lines end in a slash. +This change is for better compatibility with old versions of non-GNU +'find', such as the one used on macOS. + +--- +*** New utility function 'grep-file-at-point'. +This returns the name of the file at point (if any) in 'grep-mode' +buffers. + ** Help ++++ +*** New convenience commands with short keys in the Help buffer. +New command 'help-view-source' ('s') will view the source file (if +any) of the current help topic. New command 'help-goto-info' ('i') +will look up the current symbol (if any) in Info. New command +'help-customize' ('c') will customize the variable or the face +(if any) whose doc string is being shown in the Help buffer. + +--- +*** The 'help-for-help' ('C-h C-h') screen has been redesigned. + +--- +*** Keybindings in 'help-mode' use the new 'help-key-binding' face. +This face is added by 'substitute-command-keys' to any "\[command]" +substitution. The return value of that function should consequently +be assumed to be a propertized string. + +Note that the new face will also be used in tooltips. When using the +GTK toolkit, this is only true if 'x-gtk-use-system-tooltips' is t. + --- *** 'g' ('revert-buffer') in 'help-mode' no longer requires confirmation. +++ +*** New command 'describe-command' shows help for a command. +This can be used instead of 'describe-function' for interactive +commands and is globally bound to 'C-h x'. + ++++ *** New command 'describe-keymap' describes keybindings in a keymap. --- +*** New user option 'describe-bindings-outline'. +It enables outlines in the output buffer of 'describe-bindings' that +can provide a better overview in a long list of available bindings. + +--- *** New keybinding 'C-h R' prompts for a manual to display and displays it. +--- +*** Closing the "*Help*" buffer from the toolbar now buries the buffer. +In previous Emacs versions, the "*Help*" buffer was killed instead when +clicking the "X" icon in the tool bar. + +** Info + +--- +*** New user option 'Info-warn-on-index-alternatives-wrap'. +This option affects what happens when using the ',' command after +looking up an entry with 'i' in info buffers. If non-nil (the +default), the ',' command will now warn you when proceeding beyond the +final entry, and tapping ',' once more will then take you to the +first entry. + +++ ** New command 'lossage-size'. It allows users to set the maximum number of keystrokes and commands @@ -872,6 +1382,13 @@ so e.g. like 'C-x 8 [' inserts a left single quotation mark, 'C-x \ [' does the same. --- +*** New user option 'read-char-by-name-sort'. +It defines the sorting order of characters for completion of 'C-x 8 RET TAB' +and can be customized to sort them by codepoints instead of character names. +Additionally, you can group characters by Unicode blocks after customizing +'completions-group' and 'completions-group-sort'. + +--- *** Improved language transliteration in Malayalam input methods. Added a new Mozhi scheme. The inapplicable ITRANS scheme is now deprecated. Errors in the Inscript method were corrected. @@ -880,6 +1397,14 @@ deprecated. Errors in the Inscript method were corrected. *** New input method 'cham'. There's also a Cham greeting in "etc/HELLO". +--- +*** New input methods for Lakota language orthographies. +Two orthographies are represented here, the Suggested Lakota +Orthography and what is known as the White Hat Orthography. Input +methods 'lakota-slo-prefix', 'lakota-slo-postfix', and +'lakota-white-hat-postfix' have been added. There is also a Lakota +greeting in "etc/HELLO". + ** Ispell +++ @@ -893,16 +1418,6 @@ defaulting to active region when used interactively. ** The old non-SMIE indentation of 'sh-mode' has been removed. --- -** The 'list-bookmark' menu is now based on 'tabulated-list-mode'. -The interactive bookmark list will now benefit from features in -'tabulated-list-mode' like sorting columns or changing column width. - -Support for the optional "inline" header line, allowing for a header -without using 'header-line-format', has been dropped. Consequently, -the variables 'bookmark-bmenu-use-header-line' and -'bookmark-bmenu-inline-header-height' are now declared obsolete. - ---- ** The sb-image.el library is now marked obsolete. This file was a compatibility kludge which is no longer needed. @@ -913,31 +1428,87 @@ To revert to the previous behavior, ** Customize +--- +*** Customize buffers can now be reverted with 'C-x x g'. + *** Most customize commands now hide obsolete user options. Obsolete user options are no longer shown in the listings produced by the commands 'customize', 'customize-group', 'customize-apropos' and -'customize-changed-options'. +'customize-changed'. To customize obsolete user options, use 'customize-option' or 'customize-saved'. +*** New SVG icons for checkboxes and arrows. +They will be used automatically instead of the old icons. If Emacs is +built without SVG support, the old icons will be used instead. + +** Bookmarks + +*** Bookmarks can now be targets for new tabs. +When the bookmark.el library is loaded, a customize choice is added +to 'tab-bar-new-tab-choice' for new tabs to show the bookmark list. + +--- +*** The 'list-bookmarks' menu is now based on 'tabulated-list-mode'. +The interactive bookmark list will now benefit from features in +'tabulated-list-mode' like sorting columns or changing column width. + +Support for the optional "inline" header line, allowing for a header +without using 'header-line-format', has been dropped. Consequently, +the variables 'bookmark-bmenu-use-header-line' and +'bookmark-bmenu-inline-header-height' are now declared obsolete. + +--- +*** New user option 'bookmark-fontify'. +If non-nil, setting a bookmark will colorize the current line with +'bookmark-face'. + +--- +*** New user option 'bookmark-menu-confirm-deletion'. +In Bookmark Menu mode, Emacs by default does not prompt for +confirmation when you type 'x' to execute the deletion of bookmarks +that have been marked for deletion. However, if this new option is +non-nil then Emacs will require confirmation with 'yes-or-no-p' before +deleting. + ** Edebug +*** Obsoletions +--- +**** 'get-edebug-spec' is obsolete, replaced by 'edebug-get-spec'. ++++ +**** The spec operator ':name NAME' is obsolete, use '&name' instead. ++++ +**** The spec element 'function-form' is obsolete, use 'form' instead. + +++ -*** Edebug specification lists can use the new keyword '&error', which -unconditionally aborts the current edebug instrumentation with the -supplied error message. +*** New function 'def-edebug-elem-spec' to define Edebug spec elements. +These used to be defined with 'def-edebug-spec' thus conflating the +two name spaces, which lead to name collisions. +The use of 'def-edebug-spec' to define Edebug spec elements is +declared obsolete. -*** Edebug specification lists can use the new keyword ':unique', -which appends a unique suffix to the Edebug name of the current -definition. +*** Edebug specification lists can use some new keywords: + ++++ +**** '&interpose SPEC FUN ARGS..' lets FUN control parsing after SPEC. +More specifically, FUN is called with 'HEAD PF ARGS..' where +PF is a parsing function that expects a single argument (the specs to +use) and HEAD is the code that matched SPEC. + ++++ +**** '&error MSG' unconditionally aborts the current edebug instrumentation. + ++++ +**** '&name SPEC FUN' extracts the current name from the code matching SPEC. ** ElDoc +++ *** New user option 'eldoc-echo-area-display-truncation-message'. If non-nil (the default), eldoc will display a message saying -something like "(Documentation truncated. Use `M-x eldoc-doc-buffer' +something like "(Documentation truncated. Use `M-x eldoc-doc-buffer' to see rest)" when a message has been truncated. If nil, truncated messages will be marked with just "..." at the end. @@ -960,7 +1531,7 @@ separate buffer, or a tooltip. *** New user option 'eldoc-documentation-strategy'. The built-in choices available for this user option let users compose the results of 'eldoc-documentation-functions' in various ways, even -if some of those functions are sychronous and some asynchchronous. +if some of those functions are synchronous and some asynchronous. The user option replaces 'eldoc-documentation-function', which is now obsolete. @@ -977,6 +1548,16 @@ it when producing a doc string. This is bound to 'C-x n d' in 'shell-mode' buffers, and narrows to the command line under point (and any following output). +--- +*** New user option 'shell-has-auto-cd'. +If non-nil, 'shell-mode' handles implicit "cd" commands, changing the +directory if the command is a directory. Useful for shells like "zsh" +that has this feature. + ++++ +*** 'comint-delete-output' can now save deleted text in the kill-ring. +Interactively, 'C-u C-c C-o' triggers this new optional behavior. + ** Eshell --- @@ -984,7 +1565,8 @@ command line under point (and any following output). --- *** Environment variable 'INSIDE_EMACS' is now copied to subprocesses. -Its value equals the result of evaluating '(format "%s,eshell" emacs-version)'. +Its value contains the result of evaluating '(format "%s,eshell" +emacs-version)'. Other package names, like "tramp", could also be included. --- *** Eshell no longer re-initializes its keymap every call. @@ -1006,6 +1588,15 @@ preferred over the eudcb-mab.el backend. like cell phones, tablets or cameras. +++ +*** New connection method "sshfs", which allows accessing remote files +via a file system mounted with 'sshfs'. + ++++ +*** Tramp supports SSH authentication via a hardware security key now. +This requires at least OpenSSH 8.2, and a FIDO U2F compatible +security key, like yubikey, solokey, or nitrokey. + ++++ *** Trashed remote files are moved to the local trash directory. All remote files, which are trashed, are moved to the local trash directory. Except remote encrypted files, which are always deleted. @@ -1032,6 +1623,17 @@ When non-nil, this user option instructs Tramp to mirror the debug buffer to a file under the "/tmp/" directory. This is useful, if (in rare cases) Tramp blocks Emacs, and we need further debug information. ++++ +*** Tramp supports lock files now. +In order to deactivate this, set user option +'remote-file-name-inhibit-locks' to t. + ++++ +*** Writing sensitive auto-save, backup or lock files to the local +temporary directory must be confirmed. In order to suppress this +confirmation, set user option 'tramp-allow-unsafe-temporary-files' to +t. + ** Tempo --- @@ -1045,8 +1647,34 @@ effect. A pattern like '(map :sym)' binds the map's value for ':sym' to 'sym', equivalent to '(map (:sym sym))'. +--- +*** The function 'map-copy' now uses 'copy-alist' on alists. +This is a slightly deeper copy than the previous 'copy-sequence'. + +--- +*** The function 'map-contains-key' now supports plists. + +--- +*** More consistent duplicate key handling in 'map-merge-with'. +Until now, 'map-merge-with' promised to call its function argument +whenever multiple maps contained 'eql' keys. However, this did not +always coincide with the keys that were actually merged, which could +be 'equal' instead. The function argument is now called whenever keys +are merged, for greater consistency with 'map-merge' and 'map-elt'. + ** Package +--- +*** '/ s' ('package-menu-filter-by-status') changes parameter handling. +The command was documented to take a comma-separated list of statuses +to filter by, but instead it used the parameter as a regexp. The +command has been changed so that it now works as documented, and +checks statuses not as a regexp, but instead an exact match from the +comma-separated list. + ++++ +*** New command 'package-browse-url' and keystroke 'w'. + +++ *** New commands to filter the package list. The filter commands are bound to the following keys: @@ -1064,6 +1692,14 @@ key binding / u package-menu-filter-upgradable / / package-menu-filter-clear +*** Option to automatically native-compile packages upon installation. +Customize the user option 'package-native-compile' to enable automatic +native compilation of packages when they are installed. That option +is nil by default; if set non-nil, and if your Emacs was built with +native-compilation support, each package will be natively compiled +when it is installed, by invoking an asynchronous Emacs subprocess to +run the native-compilation of the package files. + --- *** Column widths in 'list-packages' display can now be customized. See the new user options 'package-name-column-width', @@ -1072,20 +1708,24 @@ See the new user options 'package-name-column-width', ** gdb-mi +*** New user option 'gdb-registers-enable-filter'. +If non-nil, apply a register filter based on +'gdb-registers-filter-pattern-list'. + +++ *** gdb-mi can now store and restore window configurations. Use 'gdb-save-window-configuration' to save window configuration to a file and 'gdb-load-window-configuration' to load from a file. These -commands can also be accessed through the menu bar under 'Gud -- -GDB-Windows'. 'gdb-default-window-configuration-file', when non-nil, +commands can also be accessed through the menu bar under "Gud => +GDB-Windows". 'gdb-default-window-configuration-file', when non-nil, is loaded when GDB starts up. +++ *** gdb-mi can now restore window configuration after quit. Set 'gdb-restore-window-configuration-after-quit' to non-nil and Emacs will remember the window configuration before GDB started and restore -it after GDB quits. A toggle button is also provided under 'Gud -- -GDB-Windows'. +it after GDB quits. A toggle button is also provided under "Gud => +GDB-Windows". +++ *** gdb-mi now has a better logic for displaying source buffers. @@ -1106,6 +1746,14 @@ Defaults to 'libravatar', with 'unicornify' and 'gravatar' as options. ** Compilation mode +--- +*** New function 'ansi-color-compilation-filter'. +This function is meant to be used in 'compilation-filter-hook'. + +--- +*** New user option 'ansi-color-for-compilation-mode'. +This controls what 'ansi-color-compilation-filter' does. + *** Regexp matching of messages is now case-sensitive by default. The variable 'compilation-error-case-fold-search' can be set for case-insensitive matching of messages when the old behavior is @@ -1113,6 +1761,14 @@ required, but the recommended solution is to use a correctly matching regexp instead. --- +*** New user option 'compilation-search-all-directories'. +When doing parallel builds, directories and compilation errors may +arrive in the "*compilation*" buffer out-of-order. If this variable is +non-nil (the default), Emacs will now search backwards in the buffer +for any directory the file with errors may be in. If nil, this won't +be done (and this restores how this previously worked). + +--- *** Messages from ShellCheck are now recognized. --- @@ -1177,6 +1833,40 @@ t, which preserves the original behavior. If set non-nil, showing an unseen message will set the Rmail buffer's modified flag. +--- +*** New faces for heading elements. +Those are 'shr-h1', 'shr-h2', 'shr-h3', 'shr-h4', 'shr-h5', 'shr-h6'. + +** MH-E mail handler for Emacs + +Functions and variables related to handling junk mail have been +renamed to not associate color with sender quality. + ++++ +*** New names for mh-junk interactive functions. +Function 'mh-junk-whitelist' is renamed 'mh-junk-allowlist'. +Function 'mh-junk-blacklist' is renamed 'mh-junk-blocklist'. + ++++ +*** New binding for 'mh-junk-allowlist'. +The key binding for 'mh-junk-allowlist' is changed from 'J w' to 'J a'. +The old binding is supported but warns that it is obsolete. + ++++ +*** New names for some hooks. +'mh-whitelist-msg-hook' is renamed 'mh-allowlist-msg-hook'. +'mh-blacklist-msg-hook' is renamed 'mh-blocklist-msg-hook'. + ++++ +*** New names for some variables. +Variable 'mh-whitelist-preserves-sequences-flag' is renamed +'mh-allowlist-preserves-sequences-flag'. + ++++ +*** New names for some faces. +Face 'mh-folder-blacklisted' is renamed 'mh-folder-blocklisted'. +Face 'mh-folder-whitelisted' is renamed 'mh-folder-allowlisted'. + ** Apropos *** New commands 'apropos-next-symbol' and 'apropos-previous-symbol'. @@ -1186,6 +1876,9 @@ These new navigation commands are bound to 'n' and 'p' in *** New command 'apropos-function'. This works like 'C-u M-x apropos-command' but is more discoverable. +*** New face 'apropos-button'. +Applies to buttons that indicate a face. + ** CC Mode *** Added support for Doxygen documentation style. @@ -1243,6 +1936,11 @@ symbol property to the browsing commands. With a new command 'browse-url-with-browser-kind', an URL can explicitly be browsed with either an internal or external browser. +--- +*** Support for browsing of remote files. +If a remote file is taken, a local temporary copy of that file is +passed to the browser. + *** Support for the conkeror browser is now obsolete. *** Support for the Mosaic browser has been removed. @@ -1294,9 +1992,9 @@ decaying average of delays, and if this number gets too high, the animation is stopped. +++ -*** The 'n' and 'p' commands (next/previous image) now respects dired order. +*** The 'n' and 'p' commands (next/previous image) now respect Dired order. These commands would previously display the next/previous image in -alphabetical order, but will now find the "parent" dired buffer and +lexicographic order, but will now find the "parent" Dired buffer and select the next/previous image file according to how the files are sorted there. The commands have also been extended to work when the "parent" buffer is an archive mode (i.e., zip file or the like) or tar @@ -1326,6 +2024,38 @@ To load images with the default frame colors use the ':foreground' and This change only affects image types that support foreground and background colors or transparency, such as xbm, pbm, svg, png and gif. ++++ +*** Image smoothing can now be explicitly enabled or disabled. +Smoothing applies a bilinear filter while scaling or rotating an image +to prevent aliasing and other unwanted effects. The new image +property ':transform-smoothing' can be set to t to force smoothing +and nil to disable smoothing. + +The default behavior of smoothing on down-scaling and not smoothing +on up-scaling remains unchanged. + ++++ +*** New user option 'image-transform-smoothing'. +This controls whether to use smoothing or not for an image. Values +include nil (no smoothing), t (do smoothing) or a predicate function +that's called with the image object and should return nil/t. + ++++ +*** SVG images now support user stylesheets. +The ':css' image attribute can be used to override the default CSS +stylesheet for an image. The default sets 'font-family' and +'font-size' to match the current face, so an image with 'height="1em"' +will match the font size in use where it is embedded. + +This feature relies on librsvg 2.48 or above being available. + ++++ +*** Image properties support 'em' sizes. +Size image properties, for example ':height', ':max-height', etc., can +be given a cons of the form '(SIZE . em)', where SIZE is an integer or +float which is multiplied by the font size to calculate the image +size, and 'em' is a symbol. + ** EWW +++ @@ -1390,6 +2120,18 @@ project's root directory, respectively. +++ *** New user option 'project-list-file'. ++++ +*** New command 'project-remove-known-project'. +This command lets you interactively remove an entry from the list of projects +in 'project-list-file'. + +*** 'project-find-file' now accepts non-existent file names. +This is to allow easy creation of files inside some nested +sub-directory. + +*** 'project-find-file' doesn't use the string at point as default input. +Now it's only suggested as part of the "future history". + ** xref --- @@ -1416,7 +2158,7 @@ have been renamed to have "proper" public names and documented 'xref-show-definitions-buffer-at-bottom'). *** New command 'xref-quit-and-pop-marker-stack' and a binding for it -in "*xref*" buffers ('M-,'). This combination is easy to press +in "*xref*" buffers ('M-,'). This combination is easy to press semi-accidentally if the user wants to go back in the middle of choosing the exact definition to go to, and this should do TRT. @@ -1425,6 +2167,13 @@ choosing the exact definition to go to, and this should do TRT. If chosen, file names in "*xref*" buffers will be displayed relative to the 'project-root' of the current project, when available. ++++ +*** The 'TAB' key binding in "*xref*" buffers is obsolete. +Use 'C-u RET' instead. The 'TAB' binding in "*xref*" buffers is still +supported, but we plan on removing it in a future version; at that +time, the command 'xref-quit-and-goto-xref' will no longer have a key +binding in 'xref--xref-buffer-mode-map'. + ** json.el --- @@ -1434,6 +2183,37 @@ component are now rejected by 'json-read' and friends. This makes them more compliant with the JSON specification and consistent with the native JSON parsing functions. +--- +*** Some JSON encoding functions are now obsolete. +The functions 'json-encode-number', 'json-encode-hash-table', +'json-encode-key', and 'json-encode-list' are now obsolete. + +The first two are kept as aliases of 'json-encode', which should be +used instead. Uses of 'json-encode-list' should be changed to call +one of 'json-encode', 'json-encode-alist', 'json-encode-plist', or +'json-encode-array' instead. + +** json.c + ++++ +*** New function 'json-available-p'. +This predicate returns non-nil if Emacs is built with libjansson +support, and it is available on the current system. + ++++ +*** Native JSON functions now signal an error if libjansson is unavailable. +This affects 'json-serialize', 'json-insert', 'json-parse-string', +and 'json-parse-buffer'. This can happen if Emacs was compiled with +libjansson, but the DLL cannot be found and/or loaded by Emacs at run +time. Previously, Emacs would display a message and return nil in +these cases. + +*** The JSON functions 'json-serialize', 'json-insert', +'json-parse-string', and 'json-parse-buffer' now implement some of the +semantics of RFC 8259 instead of the earlier RFC 4627. In particular, +these functions now accept top-level JSON values that are neither +arrays nor objects. + ** xml.el *** XML serialization functions now reject invalid characters. @@ -1476,6 +2256,16 @@ type for highlighting the entire message but not the sender's nick. The 'erc-status-sidebar' package which provides a HexChat-like activity overview sidebar for joined IRC channels is now part of ERC. ++++ +*** erc-tls now supports specifying a TLS client certificate. +The 'erc-tls' function has been updated to allow specifying a TLS +client certificate for authentication, as an alternative to NickServ +password-based authentication. This is referred to as "CertFP" (short +for Certificate Fingerprint) by several IRC networks. See the Info +node "(erc) Connecting" in the ERC manual for more details and +examples on how to specify and use TLS client certificates with +'erc-tls'. + ** Battery --- @@ -1585,6 +2375,11 @@ a list. ** Diff --- +*** New face 'diff-changed-unspecified'. +This is used to highlight "changed" lines (those marked with '!') in +context diffs, when 'diff-use-changed-face' is non-nil. + +--- *** New 'diff-mode' font locking face 'diff-error'. This face is used for error messages from 'diff'. @@ -1620,9 +2415,152 @@ that makes it a valid button. *** New variable 'thing-at-point-provider-alist'. This allows mode-specific alterations to how 'thing-at-point' works. +** Enriched mode + +--- +*** 'C-a' is by default no longer bound to 'beginning-of-line-text'. +This is so 'C-a' works as in other modes, and in particular holding +Shift while typing 'C-a', i.e. 'C-S-a', will now highlight the text. + +** ERT + ++++ +*** ERT can now output more verbose test failure reports. +If the 'EMACS_TEST_VERBOSE' environment variable is set, failure +summaries will include the failing condition. + +** File Locks + ++++ +*** New user option 'lock-file-name-transforms'. +This option allows controlling where lock files are written. It uses +the same syntax as 'auto-save-file-name-transforms'. + ++++ +*** New user option 'remote-file-name-inhibit-locks'. +When non-nil, this option suppresses lock files for remote files. + ++++ +*** New minor mode 'lock-file-mode'. +This command, called interactively, toggles the local value of +'create-lockfiles' in the current buffer. + +** image-dired + +--- +*** 'image-dired-mouse-toggle-mark' now toggles files in the active region. + ++++ +*** New user option 'image-dired-thumb-visible-marks'. +If non-nil (the default), use 'image-dired-thumb-mark' to say what +images are marked. + +--- +*** New command 'image-dired-delete-marked'. + ** Miscellaneous +++ +*** New function 'replace-regexp-in-region'. + ++++ +*** New function 'replace-string-in-region'. + +--- +*** New function 'mail-header-parse-addresses-lax'. +This takes a comma-separated string and returns a list of mail/name +pairs. + +--- +*** New function 'mail-header-parse-address-lax'. +Parse a string as a mail address-like string. + +--- +*** 'shell-script-mode' now supports 'outline-minor-mode'. +The outline headings have lines that start with "###". + ++++ +*** New command 'revert-buffer-quick'. +This is bound to 'C-x x g' and is like `revert-buffer', but prompts +less. + ++++ +*** New user option 'revert-buffer-quick-short-answers'. This +controls how the new 'revert-buffer-quick' (`C-x x g') command +prompts. + +--- +*** fileloop will now skip missing files instead of signalling an error. + ++++ +*** ".dir-locals.el" now supports setting 'auto-mode-alist'. +The new 'auto-mode-alist' specification in ".dir-locals.el" files can +now be used to override the global 'auto-mode-alist' in the current +directory tree. + +--- +*** New utility function 'make-separator-line'. + +--- +*** New face 'separator-line'. +This is used by 'make-separator-line'. + ++++ +*** New user option 'ignored-local-variable-values'. +This is the opposite of 'safe-local-variable-values' -- it's an alist +of variable-value pairs that are to be ignored when reading a +local-variables section of a file. + +--- +*** 'indent-tabs-mode' is now a global minor mode instead of just a variable. + +--- +*** New user option 'save-place-abbreviate-file-names'. + +--- +*** 'tabulated-list-mode' can now restore original display order. +Many commands (like 'C-x C-b') are derived from 'tabulated-list-mode', +and that mode allows the user to sort on any column. There was +previously no easy way to get back to the original displayed order +after sorting, but giving a -1 numerical prefix to the sorting command +will now restore the original order. + +--- +*** 'M-left' and 'M-right' now move between columns in 'tabulated-list-mode'. + ++++ +*** New utility function 'insert-into-buffer'. +This is like 'insert-buffer-substring', but works in the opposite +direction. + ++++ +*** New user option 'kill-transform-function'. +This can be used to transform (and suppress) strings from entering the +kill ring. + +--- +*** 'C-u M-x dig' will now prompt for a query type to use. + ++++ +*** rcirc now supports SASL authentication. + ++++ +*** 'save-interprogram-paste-before-kill' can now be a number. +In that case, it's interpreted as a limit on the size of the clipboard +data that will be saved to the 'kill-ring' prior to killing text: if +the size of the clipboard data is greater than or equal to the limit, +it will not be saved. + +--- +*** New variable 'hl-line-overlay-priority'. +This can be used to change the priority of the hl-line overlays. + ++++ +*** New command 'mailcap-view-file'. +This command will open a viewer based on the file type, as determined +by "~/.mailcap" and related files and variables. + ++++ *** New command 'C-x C-k Q' to force redisplay in keyboard macros. --- @@ -1648,6 +2586,10 @@ If this is bound to something non-nil, functions like This is a plain 2D button, but uses the background color instead of the foreground color. +--- +*** New face 'shortdoc-heading'. +Applies to headings of shortdoc sections. + +++ *** New predicate functions 'length<', 'length>' and 'length='. Using these functions may be more efficient than using 'length' (if @@ -1718,14 +2660,6 @@ doesn't turn on 'display-fill-column-indicator-mode' in special-mode buffers. This can be controlled by customizing the variable 'global-display-fill-column-indicator-modes'. ---- -*** New user option 'compilation-search-all-directories'. -When doing parallel builds, directories and compilation errors may -arrive in the "*compilation*" buffer out-of-order. If this variable is -non-nil (the default), Emacs will now search backwards in the buffer -for any directory the file with errors may be in. If nil, this won't -be done (and this restores how this previously worked). - +++ *** New user option 'next-error-message-highlight'. In addition to a fringe arrow, 'next-error' error may now optionally @@ -1733,6 +2667,12 @@ highlight the current error message in the 'next-error' buffer. This user option can be also customized to keep highlighting on all visited errors, so you can have an overview what errors were already visited. +--- +*** New choice 'next-error-quit-window' for 'next-error-found-function'. +When 'next-error-found-function' is customized to 'next-error-quit-window', +then typing the numeric prefix argument 0 before the command 'next-error' +will quit the source window after visiting the next occurrence. + +++ *** New user option 'tab-first-completion'. If 'tab-always-indent' is 'complete', this new user option can be used to @@ -1774,20 +2714,6 @@ point leaves the text. If nil, the text is not hidden again. Instead 'M-x reveal-hide-revealed' can be used to hide all the revealed text. +++ -*** New user options to control the look of line/column numbers in the mode line. -'mode-line-position-line-format' is the line number format (when -'line-number-mode' is on), 'mode-line-position-column-format' is -the column number format (when 'column-number-mode' is on), and -'mode-line-position-column-line-format' is the combined format (when -both modes are on). - -+++ -*** New user option 'mode-line-compact'. -If non-nil, repeating spaces are compressed into a single space. If -'long', this is only done when the mode line is longer than the -current window width (in characters). - -+++ *** New command 'submit-emacs-patch'. This works like 'report-emacs-bug', but is more geared towards sending patches to the Emacs issue tracker. @@ -1822,16 +2748,15 @@ leak information from the reporting user. The semantics are as with 'walk-windows'. --- -*** Killing virtual ido buffers interactively will make them go away. -Previously, killing a virtual ido buffer with 'ido-kill-buffer' didn't -do anything. This has now been changed, and killing virtual buffers -with that command will remove the buffer from recentf. - ---- *** New variable 'ffap-file-name-with-spaces'. If non-nil, 'find-file-at-point' and friends will try to guess more expansively to identify a file name with spaces. ++++ +*** New 'thing-at-point' target: 'existing-filename'. +This is like 'filename', but is a full path, and is nil if the file +doesn't exist. + --- *** Two new commands for centering in 'doc-view-mode'. The new commands 'doc-view-center-page-horizontally' (bound to 'c h') @@ -1852,10 +2777,6 @@ The width now depends of the width of the window, but will never be wider than the length of the longest buffer name, except that it will never be narrower than 19 characters. -*** Bookmarks can now be targets for new tabs. -When the bookmark.el library is loaded, a customize choice is added -to 'tab-bar-new-tab-choice' for new tabs to show the bookmark list. - --- *** Movement commands in 'gomoku-mode' are fixed. 'gomoku-move-sw' and 'gomoku-move-ne' now work correctly, and @@ -1905,6 +2826,17 @@ height of lines or width of chars. When non-nil, use a new xwidget webkit session after bookmark jump. Otherwise, it will use 'xwidget-webkit-last-session'. +** ido + +--- +*** Switching on 'ido-mode' now also overrides 'ffap-file-finder'. + +--- +*** Killing virtual ido buffers interactively will make them go away. +Previously, killing a virtual ido buffer with 'ido-kill-buffer' didn't +do anything. This has now been changed, and killing virtual buffers +with that command will remove the buffer from recentf. + ** Flymake mode +++ @@ -1955,6 +2887,10 @@ The following user options have been renamed: The old names are now obsolete. +--- +*** 'world-clock-mode' can no longer be turned on interactively. +Use 'world-clock' to turn on that mode. + ** D-Bus +++ @@ -1978,7 +2914,7 @@ messages, contain the error name of that message now. +++ *** D-Bus events have changed their internal structure. They carry now the destination and the error-name of an event. They -also keep the type information of their arguments. Use the +also keep the type information of their arguments. Use the 'dbus-event-*' accessor functions. ** CPerl Mode @@ -1986,6 +2922,15 @@ also keep the type information of their arguments. Use the --- *** New face 'perl-heredoc', used for heredoc elements. ++++ +** A function can now be thrown to the 'exit' label in addition to t or nil. +The command loop will call it with zero arguments before returning. + ++++ +** New error symbol 'minibuffer-quit'. +Signaling it has almost the same effect as 'quit' except that it +doesn't cause keyboard macro termination. + --- *** The command 'cperl-set-style' offers the new value "PBP". This value customizes Emacs to use the style recommended in Damian @@ -2002,6 +2947,67 @@ could have saved enough typing by using an abbrev, a hint will be displayed in the echo area, mentioning the abbrev that could have been used instead. +** Octave Mode + ++++ +*** Line continuations in double-quoted strings now use a backslash. +Typing 'C-M-j' (bound to 'octave-indent-new-comment-line') now follows +the behavior introduced in Octave 3.8 of using a backslash as a line +continuation marker within double-quoted strings, and an ellipsis +everywhere else. + +** Repeat + ++++ +*** New transient mode 'repeat-mode' to allow shorter key sequences. +You can type 'C-x u u' instead of 'C-x u C-x u' to undo many changes, +'C-x o o' instead of 'C-x o C-x o' to switch several windows, +'C-x { { } } ^ ^ v v' to resize the selected window interactively, +'M-g n n p p' to navigate next-error matches. Any other key exits +transient mode and then is executed normally. 'repeat-exit-key' +defines an additional key to exit mode like 'isearch-exit' ('RET'). +The user option 'repeat-exit-timeout' specifies the number of +seconds of idle time to break the repetition chain automatically. +With 'repeat-keep-prefix' you can keep the prefix arg of the previous +command. For example, this can help to reverse the window navigation +direction with e.g. 'C-x o M-- o o'. Also it can help to set a new +step with e.g. 'C-x { C-5 { { {', which will set the window resizing +step to 5 columns. + ++++ +** EasyPG +GPG key servers can now be queried for keys with the +'M-x epa-search-keys' command. Keys can then be added to your +personal key ring. + +** So Long + +--- +*** New 'so-long-predicate' function 'so-long-statistics-excessive-p' +efficiently detects the presence of a long line anywhere in the buffer +using 'buffer-line-statistics' (see above). This is now the default +predicate (replacing 'so-long-detected-long-line-p'). + +--- +*** 'so-long-threshold' and 'so-long-max-lines' have been raised to +10000 bytes and 500 lines respectively, to reduce the likelihood of +false-positives when 'global-so-long-mode' is enabled. The latter +value is now only used by the old predicate, as the new predicate +knows the longest line in the entire buffer. + +--- +*** 'so-long-target-modes' now includes 'fundamental-mode' by default, +meaning that 'global-so-long-mode' will also process files which were +not recognised. (This only has an effect if 'set-auto-mode' chooses +'fundamental-mode'; buffers which are simply in 'fundamental-mode' by +default are unaffected.) + +--- +*** New user options 'so-long-mode-preserved-minor-modes' and +'so-long-mode-preserved-variables' allow specified mode and variable +states to be maintained if 'so-long-mode' replaces the original major +mode. By default, these new options support 'view-mode'. + * New Modes and Packages in Emacs 28.1 @@ -2029,12 +3035,50 @@ This is a mode for searching a RFC 2229 dictionary server. the mouse in 'dictionary-tooltip-dictionary' (which must be customized first). +** transient.el + +This library implements support for powerful keyboard-driven menus. +Such menus can be used as simple visual command dispatchers. More +complex menus take advantage of infix arguments, which are somewhat +similar to prefix arguments, but are more flexible and discoverable. + * Incompatible Editing Changes in Emacs 28.1 +** 'electric-indent-mode' now also indents inside strings and comments, +(unless the indentation function doesn't, of course). +To recover the previous behavior you can use: + + (add-hook 'electric-indent-functions + (lambda (_) (if (nth 8 (syntax-ppss)) 'no-indent))) + +** The 'M-o' ('facemenu-keymap') global binding has been removed. +To restore the old binding, say something like: + + (require 'facemenu) + (define-key global-map "\M-o" 'facemenu-keymap) + (define-key facemenu-keymap "\es" 'center-line) + (define-key facemenu-keymap "\eS" 'center-paragraph) + +The last two lines are not strictly necessary if you don't care about +having those two commands on the 'M-o' keymap; see the next section. + +** The 'M-o M-s' and 'M-o M-S' global bindings have been removed. +Use 'M-x center-line' and 'M-x center-paragraph' instead. See the +previous section for how to get back the old bindings. Alternatively, +if you only want these two commands to have global bindings they had +before, you can add the following to your init file: + + (define-key global-map "\M-o\M-s" 'center-line) + (define-key global-map "\M-o\M-S" 'center-paragraph) + +** The 'M-o M-o' global binding has been removed. +Use 'M-x font-lock-fontify-block' instead, or the new 'C-x x f' +command, which updates the syntax highlighting in the current buffer. + ** In 'f90-mode', the backslash character ('\') no longer escapes. For about a decade, the backslash character has no longer had a -special escape syntax in Fortran F90. To get the old behaviour back, +special escape syntax in Fortran F90. To get the old behavior back, say something like: (modify-syntax-entry ?\\ "\\" f90-mode-syntax-table) @@ -2046,9 +3090,71 @@ since the latter uses 'M-s' as a prefix key of the search prefix map. ** 'vc-print-branch-log' shows the change log for BRANCH from its root directory instead of the default directory. +--- +** 'project-shell' and 'shell' now use 'pop-to-buffer-same-window'. +This is to keep the same behavior as Eshell. + * Incompatible Lisp Changes in Emacs 28.1 ++++ +** 'overlays-in' now handles zero-length overlays slightly differently. +Previosly, zero-length overlays at the end of the buffer were included +in the result (if the region queried for stopped at that position). +The same was not the case if the buffer had been narrowed to exclude +the real end of the buffer. This has now been changed, and +zero-length overlays at `point-max' are always included in the results. + +--- +** 'replace-match' now runs modification hooks slightly later. +The function is documented to leave point after the replacement text, +but this was not always the case if a modification hook inserted text +in front of the replaced text -- 'replace-match' would instead leave +point where the end of the inserted text would have been before the +hook ran. 'replace-match' now always leaves point after the +replacement text. + +--- +** 'kill-all-local-variables' has changed how it handles non-symbol hooks. +The function is documented to eliminate all buffer-local bindings +except variables with a 'permanent-local' property, or hooks that +have elements with a 'permanent-local-hook' property. In addition, it +would also keep lambda expressions in hooks sometimes. The latter has +now been changed: The function will now also remove these. + +--- +** Some floating-point numbers are now handled differently by the Lisp reader. +In previous versions of Emacs, numbers with a trailing dot and an exponent +were read as integers and the exponent ignored: 2.e6 was interpreted as the +integer 2. Such numerals are now read as floats with the exponent included: +2.e6 is now read as the floating-point value 2000000.0. +That is, '(read-from-string "1.e3")' => '(1000.0 . 4)' now. + ++++ +** The 'lexical-binding' local variable is always enabled. +Previously, if 'enable-local-variables' was nil, a 'lexical-binding' +local variable would not be heeded. This has now changed, and a file +with a 'lexical-binding' cookie is always heeded. To revert to the +old behavior, set 'permanently-enabled-local-variables' to nil. + ++++ +** 'completing-read-default' sets completion variables buffer-locally. +'minibuffer-completion-table' and related variables are now set buffer-locally +in the minibuffer instead of being set via a global let-binding. + ++++ +** The use of positional arguments in 'define-minor-mode' is obsolete. +These were actually rendered obsolete in Emacs 21 but were never +marked as such. + +** 'facemenu-color-alist' is now obsolete, and is not used. + +** 'facemenu.el' is no longer preloaded. +To use functions/variables from the package, you now have to say +'(require 'facemenu)' or similar. + +** 'pcomplete-ignore-case' is now an obsolete alias of 'completion-ignore-case'. + ** 'completions-annotations' face is not used when the caller puts own face. This affects the suffix specified by completion 'annotation-function'. @@ -2056,6 +3162,10 @@ This affects the suffix specified by completion 'annotation-function'. The mark will be set to point to the end of the new buffer. +++ +** An active minibuffer now has major mode 'minibuffer-mode', not the +erroneous 'minibuffer-inactive-mode' it formerly had. + ++++ ** Some properties from completion tables are now preserved. If 'minibuffer-allow-text-properties' is non-nil, doing completion over a table of strings with properties will no longer remove all the @@ -2115,7 +3225,10 @@ This is no longer supported, and setting this variable has no effect. Use macro 'with-current-buffer-window' with action alist entry 'body-function'. --- -** The metamail.el library is now marked obsolete. +** The inversion.el library is now obsolete. + +--- +** The metamail.el library is now obsolete. --- ** Some obsolete variable and function aliases in dbus.el have been removed. @@ -2145,24 +3258,27 @@ ledit.el, lmenu.el, lucid.el and old-whitespace.el. 'dirtrack-debug-toggle', 'dynamic-completion-table', 'easy-menu-precalculate-equivalent-keybindings', 'epa-display-verify-result', 'epg-passphrase-callback-function', -'eshell-report-bug', 'eval-next-after-load', 'exchange-dot-and-mark', -'ffap-bug', 'ffap-submit-bug', 'ffap-version', -'file-cache-choose-completion', 'forward-point', 'generic-char-p', -'global-highlight-changes', 'hi-lock-face-history', -'hi-lock-regexp-history', 'highlight-changes-active-string', -'highlight-changes-initial-state', 'highlight-changes-passive-string', -'image-mode-maybe', 'imenu-example--name-and-position', -'ispell-aspell-supports-utf8', 'lisp-mode-auto-fill', -'locate-file-completion', 'make-coding-system', -'minibuffer-local-must-match-filename-map', 'mouse-choose-completion', -'mouse-major-mode-menu', 'mouse-popup-menubar', -'mouse-popup-menubar-stuff', 'newsticker-groups-filename', -'non-iso-charset-alist', 'nonascii-insert-offset', -'nonascii-translation-table', 'password-read-and-add', -'pre-abbrev-expand-hook', 'princ-list', 'print-help-return-message', -'process-filter-multibyte-p', 'read-file-name-predicate', -'remember-buffer', 'rmail-highlight-face', 'rmail-message-filter', -'semantic-after-idle-scheduler-reparse-hooks', +'erc-announced-server-name', 'erc-default-coding-system', +'erc-process', 'erc-send-command', 'eshell-report-bug', +'eval-next-after-load', 'exchange-dot-and-mark', 'ffap-bug', +'ffap-submit-bug', 'ffap-version', 'file-cache-mouse-choose-completion', +'forward-point', 'generic-char-p', 'global-highlight-changes', +'hi-lock-face-history', 'hi-lock-regexp-history', +'highlight-changes-active-string', 'highlight-changes-initial-state', +'highlight-changes-passive-string', +'icalendar--datetime-to-noneuropean-date', 'image-mode-maybe', +'imenu-example--name-and-position', 'ispell-aspell-supports-utf8', +'lisp-mode-auto-fill', 'locate-file-completion', 'make-coding-system', +'menu-bar-files-menu', 'minibuffer-local-must-match-filename-map', +'mouse-choose-completion', 'mouse-major-mode-menu', +'mouse-popup-menubar', 'mouse-popup-menubar-stuff', +'newsticker-groups-filename', 'nnir-swish-e-index-file', +'nnmail-fix-eudora-headers', 'non-iso-charset-alist', +'nonascii-insert-offset', 'nonascii-translation-table', +'password-read-and-add', 'pre-abbrev-expand-hook', 'princ-list', +'print-help-return-message', 'process-filter-multibyte-p', +'read-file-name-predicate', 'remember-buffer', 'rmail-highlight-face', +'rmail-message-filter', 'semantic-after-idle-scheduler-reparse-hooks', 'semantic-after-toplevel-bovinate-hook', 'semantic-before-idle-scheduler-reparse-hooks', 'semantic-before-toplevel-bovination-hook', @@ -2189,7 +3305,8 @@ ledit.el, lmenu.el, lucid.el and old-whitespace.el. 'semantic-token-type-parent', 'semantic-toplevel-bovine-cache', 'semantic-toplevel-bovine-table', 'semanticdb-mode-hooks', 'set-coding-priority', 'set-process-filter-multibyte', -'shadows-compare-text-p', 'shell-dirtrack-toggle', 't-mouse-mode', +'shadows-compare-text-p', 'shell-dirtrack-toggle', +'speedbar-navigating-speed', 'speedbar-update-speed', 't-mouse-mode', 'term-dynamic-simple-complete', 'tooltip-hook', 'tpu-have-ispell', 'url-generate-unique-filename', 'url-temporary-directory', 'vc-arch-command', 'vc-default-working-revision' (variable), @@ -2197,6 +3314,12 @@ ledit.el, lmenu.el, lucid.el and old-whitespace.el. 'vcursor-toggle-vcursor-map', 'w32-focus-frame', 'w32-select-font', 'wisent-lex-make-token-table'. +--- +** Some functions and variables obsolete since Emacs 22 have been removed: +'gnus-article-hide-pgp-hook', 'gnus-inews-mark-gcc-as-read', +'gnus-treat-display-xface', 'gnus-treat-strip-pgp', +'nnmail-spool-file'. + ** The WHEN argument of 'make-obsolete' and related functions is mandatory. The use of those functions without a WHEN argument was marked obsolete back in Emacs 23.1. The affected functions are: 'make-obsolete', @@ -2205,9 +3328,118 @@ back in Emacs 23.1. The affected functions are: 'make-obsolete', ** The variable 'keyboard-type' is obsolete and not dynamically scoped any more. +** The 'values' variable is now obsolete. + ++++ +** The '&define' keyword in an Edebug specification now disables backtracking. +The implementation was buggy, and multiple '&define' forms in an '&or' +form should be exceedingly rare. See the Info node "(elisp) Backtracking" in +the Emacs Lisp reference manual for background. + +--- +** 'sql-*-statement-starters' are no longer user options. +These variables describe facts about the SQL standard and +product-specific additions. There should be no need for users to +customize them. + +--- +** Function 'lm-maintainer' is replaced with 'lm-maintainers'. +The former is now declared obsolete. + * Lisp Changes in Emacs 28.1 ++++ +*** New function 'file-name-concat'. +This appends file name components to a directory name and returns the +result. + ++++ +*** New function 'split-string-shell-command'. +This splits a shell command string into separate components, +respecting quoting with single ('like this') and double ("like this") +quotes, as well as backslash quoting (like\ this). + +--- +*** ':safe' settings in 'defcustom' are now propagated to the loaddefs files. + ++++ +** New function 'syntax-class-to-char'. +This does almost the opposite of 'string-to-syntax' -- it returns the +syntax descriptor (a character) given a raw syntax descriptor (an +integer). + ++++ +** New function 'buffer-local-boundp'. +This predicate says whether a symbol is bound in a specific buffer. + +--- +** Emacs now attempts to test for high-rate subprocess output more fairly. +When several subprocesses produce output simultaneously at high rate, +Emacs will now by default attempt to service them all in a round-robin +fashion. Set the new variable 'process-prioritize-lower-fds' to a +non-nil value to get back the old behavior, whereby after reading +from a subprocess, Emacs would check for output of other subprocesses +in a way that is likely to read from the same process again. + ++++ +** New function 'sxhash-equal-including-properties'. +This is identical to 'sxhash-equal' but accounting also for string +properties. + ++++ +** 'unlock-buffer' displays warnings instead of signaling. +Instead of signaling 'file-error' conditions for file system level +errors, the function now calls 'display-warning' and continues as if +the error did not occur. + ++++ +** New function 'always'. +This is identical to 'ignore', but returns t instead. + ++++ +** New forms to declare how completion should happen has been added. +'(declare (completion PREDICATE))' can be used as a general predicate +to say whether the command should be present when completing with +'M-x TAB'. '(declare (modes MODE...))' can be used as a short-hand +way of saying that the command should be present when completing from +buffers in major modes derived from MODE..., or, if it's a minor mode, +whether that minor mode is enabled in the current buffer. + ++++ +** The 'interactive' syntax has been extended to allow listing applicable modes. +Forms like '(interactive "p" dired-mode)' can be used to annotate the +commands as being applicable for modes derived from 'dired-mode', +or if the mode is a minor mode, that the current buffer has that +minor mode activated. Note that using this form will create byte code +that is not compatible with byte code in previous Emacs versions. + ++++ +** New buffer-local variable 'local-minor-modes'. +This permanently buffer-local variable holds a list of currently +enabled non-global minor modes in the current buffer (as a list of +symbols). + ++++ +** New variable 'global-minor-modes'. +This variable holds a list of currently enabled global minor modes (as +a list of symbols). + ++++ +** 'define-minor-mode' now takes an ':interactive' argument. +This can be used for specifying which modes this minor mode is meant +for, or to make the new minor mode non-interactive. The default value +is t. + ++++ +** 'define-derived-mode' now takes an ':interactive' argument. +This can be used to control whether the defined mode is a command +or not, and is useful when defining commands that aren't meant to be +used by users directly. + +--- +** The 'easymenu' library is now preloaded. + --- ** New variable 'indent-line-ignored-functions'. This allows modes to cycle through a set of indentation functions @@ -2227,6 +3459,10 @@ each element is a list with three elements: a completion, a prefix string, and a suffix string. +++ +** New completion function 'group-function' for grouping candidates. +It takes two arguments: a completion candidate and a 'transform' flag. + ++++ ** 'read-char-from-minibuffer' and 'y-or-n-p' support 'help-form'. If you bind 'help-form' to a non-nil value while calling these functions, then pressing 'C-h' ('help-char') causes the function to evaluate 'help-form' @@ -2237,10 +3473,19 @@ and display the result. When non-nil, then functions 'read-char-choice' and 'y-or-n-p' (respectively) use the function 'read-key' to read a character instead of using the minibuffer. +--- +** New user option 'use-short-answers'. +When non-nil, the function 'y-or-n-p' is used instead of +'yes-or-no-p'. This eliminates the need to define an alias that maps +one to another in the init file. The same user option also controls +whether the function 'read-answer' accepts short answers. + +++ -** 'set-window-configuration' now takes an optional 'dont-set-frame' -parameter which, when non-nil, instructs the function not to select -the frame recorded in the configuration. +** 'set-window-configuration' now takes two optional parameters, +'dont-set-frame' and 'dont-set-miniwindow'. The first of these, when +non-nil, instructs the function not to select the frame recorded in +the configuration. The second prevents the current minibuffer being +replaced by the one stored in the configuration. +++ ** 'define-globalized-minor-mode' now takes a ':predicate' parameter. @@ -2254,6 +3499,11 @@ argument ELLIPSIS, will now indicate truncation using '…' when the selected frame can display it, and using "..." otherwise. +++ +** 'string-width' now accepts two optional arguments FROM and TO. +This allows calculating the width of a substring without consing a +new string. + ++++ ** New command 'make-directory-autoloads'. This does the same as the old command 'update-directory-autoloads', but has different semantics: Instead of passing in the output file via @@ -2281,6 +3531,11 @@ been added, and takes a callback to handle the return status. ** 'ascii' is now a coding system alias for 'us-ascii'. +++ +** New function 'file-name-with-extension'. +This function allows a canonical way to set/replace the extension of a +file name. + ++++ ** New function 'file-backup-file-names'. This function returns the list of file names of all the backup files of its file argument. @@ -2313,6 +3568,12 @@ This function can be used by modes to add elements to the 'choice' customization type of a variable. +++ +** New function 'require-theme'. +This function is like 'require', but searches 'custom-theme-load-path' +instead of 'load-path'. It can be used by Custom themes to load +supporting Lisp files when 'require' is unsuitable. + ++++ ** New function 'file-modes-number-to-symbolic' to convert a numeric file mode specification into symbolic form. @@ -2321,6 +3582,27 @@ file mode specification into symbolic form. ** The variable 'force-new-style-backquotes' has been removed. This removes the final remaining trace of old-style backquotes. +** Mode Lines + ++++ +*** New user options to control the line/column numbers in the mode line. +'mode-line-position-line-format' is the line number format (when +'line-number-mode' is on), 'mode-line-position-column-format' is +the column number format (when 'column-number-mode' is on), and +'mode-line-position-column-line-format' is the combined format (when +both modes are on). + ++++ +*** New user option 'mode-line-compact'. +If non-nil, repeating spaces are compressed into a single space. If +'long', this is only done when the mode line is longer than the +current window width (in characters). + ++++ +*** 'global-mode-string' constructs should end with a space. +This was previously not formalized, which led to combinations of modes +displaying data "smushed together" on the mode line. + ** Changes in handling dynamic modules *** The module header 'emacs-module.h' now contains type aliases @@ -2431,7 +3713,7 @@ menu handling. It is meant as an (experimental) aid for converting Emacs Lisp code to lexical binding, where dynamic (special) variables bound in one file can affect code in another. For details, see the manual section -"(Elisp) Converting to Lexical Binding". +"(elisp) Converting to Lexical Binding". +++ *** 'byte-recompile-directory' can now compile symlinked ".el" files. @@ -2502,6 +3784,29 @@ locales. They are also available as aliases 'ebcdic-cp-*' (e.g., 'cp278' for 'ibm278'). There are also new charsets 'ibm2xx' to support these coding-systems. +--- +** 'while-no-input-ignore-events' accepts more special events. +The special events 'dbus-event' and 'file-notify' are now ignored in +'while-no-input' when added to this variable. + ++++ +** 'condition-case' now allows for a success handler. +It is written as '(:success BODY...)' where BODY is executed +whenever the protected form terminates without error, with the +specified variable bound to the the value of the protected form. + ++++ +** 'The 'uniquify' argument in 'auto-save-file-name-transforms' can be a symbol. +If this symbol is one of the members of 'secure-hash-algorithms', +Emacs constructs the nondirectory part of the auto-save file name by +applying that 'secure-hash' to the buffer file name. This avoids any +risk of excessively long file names. + +--- +** New user option 'etags-xref-prefer-current-file'. +When non-nil, matches for identifiers in the file visited by the +current buffer will be shown first in the "*xref*" buffer. + * Changes in Emacs 28.1 on Non-Free Operating Systems |