diff options
author | Stefan Kangas <stefan@marxist.se> | 2021-09-06 04:27:12 +0200 |
---|---|---|
committer | Stefan Kangas <stefan@marxist.se> | 2021-09-06 04:27:12 +0200 |
commit | c3ca31308fe33102aa624f4665cc9126785c9886 (patch) | |
tree | 8c9eaa5eaebddebbcd4ed2cb8a3e996cd868b117 | |
parent | e7fc61f7399efaaac397b589f6017fbde98311ec (diff) | |
download | emacs-c3ca31308fe33102aa624f4665cc9126785c9886.tar.gz |
* etc/NEWS: Improve file organization.
-rw-r--r-- | etc/NEWS | 3999 |
1 files changed, 1990 insertions, 2009 deletions
@@ -31,9 +31,6 @@ 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 @@ -70,8 +67,7 @@ available, and this is the Cairo graphics library + HarfBuzz for font shaping, so 'configure' now recommends that combination. --- -** The ftx font backend driver has been removed. -It was declared obsolete in Emacs 27.1. +** Support for building with Motif has been removed. --- ** The configure option '--without-makeinfo' has been removed. @@ -84,6 +80,10 @@ GCC has withdrawn the '-fcheck-pointer-bounds' option and support for its implementation has been removed from the Linux kernel. --- +** The ftx font backend driver has been removed. +It was declared obsolete in Emacs 27.1. + +--- ** Emacs no longer supports old OpenBSD systems. OpenBSD 5.3 and older releases are no longer supported, as they lack proper pty support that Emacs needs. @@ -92,20 +92,21 @@ 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 prints a backtrace when signaling an error in batch mode. +This makes debugging Emacs Lisp scripts run in batch mode easier. To +get back the old behavior, set the new variable +'backtrace-on-error-noninteractive' to a nil value. + +--- +** Errors in 'kill-emacs-hook' no longer prevent Emacs from shutting down. +If a function in that hook signals an error in an interactive Emacs, +the user will be prompted on whether to continue. If the user doesn't +answer within five seconds, Emacs will continue shutting down anyway. ** Emacs now supports loading a Secure Computing filter. This is supported only on capable GNU/Linux systems. To activate, @@ -118,62 +119,246 @@ 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: +** 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". - (add-hook 'foo-mode-hook (lambda () (auto-fill-mode -1)) +** New variable 'redisplay-skip-initial-frame' to enable batch redisplay tests. +Setting it to nil forces the redisplay to do its job even in the +initial frame used in batch mode. - -* Changes in Emacs 28.1 +--- +** File names given on the command line will now be pushed onto +'file-name-history'. ** '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. + +* Changes in Emacs 28.1 + +** The new NonGNU ELPA archive is enabled by default alongside GNU ELPA. + ++++ +** 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). + ++++ +** When 'suggest-key-bindings' is non-nil, the completion list of 'M-x' +shows equivalent key bindings for all commands that have them. + +** New user option 'completions-detailed'. +When non-nil, some commands like 'describe-symbol' show more detailed +completions with more information in completion prefix and suffix. + --- -** '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. +** 'C-s' in 'M-x' now searches over completions again. +In Emacs 23, typing 'M-x' ('read-extended-command') and then 'C-s' (to +do an interactive search) would search over possible completions. +This was lost in Emacs 24, but is now back again. + +--- +** User option 'completions-format' supports a new value 'one-column'. +++ -** Etags now supports the Mercury programming language. -See https://mercurylang.org. +** 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-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'), 'C-x x t' +('toggle-truncate-lines') and 'C-x x f' ('font-lock-update'). +++ -** 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 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 +looking at the doc string of a function that belongs to one of these +groups. +++ -** New command 'font-lock-update', bound to 'C-x x f'. -This command updates the syntax highlighting in this buffer. +** 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'. +You can also invoke the context menu by pressing 'S-<F10>'. +++ -** 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'. +** Modifiers now go outside angle brackets in pretty-printed key bindings. +For example, 'RET' with Control and Meta modifiers is now shown as +'C-M-<return>' instead of '<C-M-return>'. Either variant can be used +as input; functions such as 'kbd' and 'read-kbd-macro' accept both +styles as equivalent (they have done so for a long time). -** The new NonGNU ELPA archive is enabled by default alongside GNU ELPA. +--- +** 'eval-expression' no longer signals an error on incomplete expressions. +Previously, typing 'M-: ( RET' would result in Emacs saying "End of +file during parsing" and dropping out of the minibuffer. The user +would have to type 'M-: M-p' to edit and redo the expression. Now +Emacs will echo the message and allow the user to continue editing. + ++++ +** 'eval-last-sexp' now handles 'defvar'/'defcustom'/'defface' specially. +This command would previously not redefine values defined by these +forms, but this command has now been changed to work more like +'eval-defun', and reset the values as specified. + +--- +** 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. + ++++ +** New user option 'kill-buffer-delete-auto-save-files'. +If non-nil, killing a buffer that has an auto-save file will prompt +the user for whether that file should be deleted. (Note that +'delete-auto-save-files', if non-nil, was previously documented to +result in deletion of auto-save files when killing a buffer without +unsaved changes, but this has apparently not worked for several +decades, so the documented semantics of this variable has been changed +to match the behaviour.) + ++++ +** New user option 'next-error-message-highlight'. +In addition to a fringe arrow, 'next-error' error may now optionally +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 'file-preserve-symlinks-on-save'. +This controls what Emacs does when saving buffers that visit files via +symbolic links, and 'file-precious-flag' is non-nil. + ++++ +** New user option 'copy-directory-create-symlink'. +If non-nil, will make `copy-directory' (when used on a symbolic +link) copy the link instead of following the link. The default is +nil, so the default behavior is unchanged. + ++++ +** 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. + +--- +** Specific warnings can now be disabled from the warning buffer. +When a warning is displayed to the user, the resulting buffer now has +buttons which allow making permanent changes to the treatment of that +warning. Automatic showing of the warning can be disabled (although +it is still logged to the "*Messages*" buffer), or the warning can be +disabled entirely. + ++++ +** ".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. + +--- +** User option 'uniquify-buffer-name-style' can now be a function. +This user option can be one of the predefined styles or a function to +personalize the uniquified buffer name. + +--- +** 'remove-hook' is now an interactive command. + +** 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. + ++++ +*** New command 'clone-frame' (bound to 'C-x 5 c'). +This is like 'C-x 5 2', but uses the frame parameters of the current +frame instead of 'default-frame-alist'. + +--- +*** 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 +the current buffer and the text "GNU Emacs" instead of the value of +'invocation-name'. To get the old behavior back, add the following to +your init file: + + (setq frame-title-format '(multiple-frames "%b" + ("" invocation-name "@" system-name))) + ++++ +*** 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. + ++++ +*** A prefix arg now causes 'delete-other-frames' to only iconify frames. + +--- +*** Commands 'set-frame-width' and 'set-frame-height' can now get their +input using the minibuffer. + +** Windows + +*** The key prefix 'C-x 4 1' displays next command buffer in the same window. +It's bound to the command 'same-window-prefix' that requests the buffer +of the next command to be displayed in the same window. + +*** The key prefix 'C-x 4 4' displays next command buffer in a new window. +It's bound to the command 'other-window-prefix' that requests the buffer +of the next command to be displayed in a new window. +++ -** New command 'recenter-other-window', bound to 'S-M-C-l'. +*** New command 'recenter-other-window', bound to 'S-M-C-l'. Like 'recenter-top-bottom' acting in the other window. -** Minibuffer scrolling is now conservative by default. ++++ +*** 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 +previously selected window. + +*** New function 'window-bump-use-time'. +This updates the use time of a window. + +** Minibuffer + +*** Minibuffer scrolling is now conservative by default. This is controlled by the new variable 'scroll-minibuffer-conservatively'. In addition, there is a new variable @@ -184,7 +369,7 @@ cases, tho the cure may be worse than the disease. This said, the effect should be negligible in the vast majority of cases anyway. +++ -** Improved handling of minibuffers on switching frames. +*** Improved handling of minibuffers on switching frames. By default, when you switch to another frame, an active minibuffer now moves to the newly selected frame. Nevertheless, the effect of what you type in the minibuffer happens in the frame where the minibuffer @@ -197,159 +382,288 @@ behavior, which mixed these two, can be approximated by customizing nor t. +++ -** New user option 'read-minibuffer-restore-windows'. +*** 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. +** Mode Line + +++ -** 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 -looking at the doc string of a function that belongs to one of these -groups. +*** 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 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). + +** Tab Bars + +*** The key prefix 'C-x t t' displays next command buffer in a new tab. +It's bound to the command 'other-tab-prefix' that requests the buffer +of the next command to be displayed in a new tab. + ++++ +*** New command 'C-x t C-r' to open file read-only in other tab. --- -** 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. +*** The tab bar is frame-local when 'tab-bar-show' is a number. +Show/hide the tab bar independently for each frame, according to the +value of 'tab-bar-show'. -** New variable 'redisplay-skip-initial-frame' to enable batch redisplay tests. -Setting it to nil forces the redisplay to do its job even in the -initial frame used in batch mode. +--- +*** New command 'toggle-frame-tab-bar'. +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'. --- -** Support for the 'strike-through' face attribute on TTY frames. -If your terminal's termcap or terminfo database entry has the 'smxx' -capability defined, Emacs will now emit the prescribed escape -sequences necessary to render faces with the 'strike-through' -attribute on TTY frames. +*** 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. -+++ -** Emacs now defaults to UTF-8 instead of ISO-8859-1. -This is only for the default, where the user has set no 'LANG' (or -similar) variable or environment. This change should lead to no -user-visible changes for normal usage. +--- +*** 'Mod-9' bound to 'tab-last' now switches to the last tab. +It also supports a negative argument. -+++ -** New variables that hold default buffer names for shell output. -The new constants 'shell-command-buffer-name' and -'shell-command-buffer-name-async' store the default buffer names -for the output of, respectively, synchronous and async shell -commands. +--- +*** New command 'tab-duplicate' bound to 'C-x t n'. -** 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 -dimension. +--- +*** 'C-x t N' creates a new tab at the specified absolute position. +It also supports a negative argument. -+++ -** New user option 'word-wrap-by-category'. -When word-wrap is enabled, and this option is non-nil, that allows -Emacs to break lines after more characters than just whitespace -characters. In particular, this significantly improves word-wrapping -for CJK text mixed with Latin text. +--- +*** 'C-x t M' moves the current tab to the specified absolute position. +It also supports a negative argument. --- -** Rudimentary support for the 'st' terminal emulator. -Emacs now supports 256 color display on the 'st' terminal emulator. +*** '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'. --- -** Mouse wheel scrolling now works on more parts of frame's display. +*** 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. + +--- +*** New tab-line faces and options. +The face 'tab-line-tab-special' is used for tabs whose buffers are +special, i.e. not file-backed. The face +'tab-line-tab-inactive-alternate' is used to display inactive tabs +with an alternating background color, making them easier to +distinguish between, especially if the face 'tab-line-tab' is +configured to not display with a box; this alternate face is only +applied when the option 'tab-line-tab-face-functions' is +so-configured. That option may also be used to customize tab-line +faces in other ways. + +** Mouse wheel + +--- +*** Mouse wheel scrolling now defaults to one line at a time. + +--- +*** Mouse wheel scrolling now works on more parts of frame's display. When using 'mwheel-mode', the mouse wheel will now scroll also when the mouse cursor is on the scroll bars, fringes, margins, header line, and mode line. ('mwheel-mode' is enabled by default on most graphical displays.) ---- -** Mouse wheel scrolling now defaults to one line at a time. - +++ -** Mouse wheel scrolling with Shift modifier now scrolls horizontally. +*** Mouse wheel scrolling with Shift modifier now scrolls horizontally. This works in text buffers and over images. Typing a numeric prefix arg (e.g. 'M-5') before starting horizontal scrolling changes its step value. The value is saved in the user option 'mouse-wheel-scroll-amount-horizontal'. +** Customize + --- -** 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'. +*** 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'. + +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. + +** Help + ++++ +*** 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 command 'apropos-function'. +This works like 'C-u M-x apropos-command' but is more discoverable. --- -** 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 -the current buffer and the text "GNU Emacs" instead of the value of -'invocation-name'. To get the old behavior back, add the following to -your init file: +*** New keybinding 'C-h R' prompts for a manual to display and displays it. - (setq frame-title-format '(multiple-frames "%b" - ("" invocation-name "@" system-name))) +--- +*** 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. + +--- +*** The 'help-for-help' ('C-h C-h') screen has been redesigned. +++ -** 'nobreak-char-display' now also affects all non-ASCII space characters. -Previously, this was limited only to NO-BREAK-SPACE and hyphen -characters. Now it also covers the rest of the non-ASCII Unicode -space characters. +*** 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. --- -** Prefer "chat.freenode.net" to "irc.freenode.net". -"chat.freenode.net" has been the preferred address for connecting to the -freenode IRC network for years now. Occurrences of "irc.freenode.net" -have been replaced with "chat.freenode.net" throughout Emacs. +*** 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 functions 'null-device' and 'path-separator'. -These functions return the connection local value of the respective -variables. This can be used for remote hosts. +*** New command 'lossage-size'. +It allows users to set the maximum number of keystrokes and commands +recorded for the purpose of 'view-lossage'. -** Emacs now prints a backtrace when signaling an error in batch mode. -This makes debugging Emacs Lisp scripts run in batch mode easier. To -get back the old behavior, set the new variable -'backtrace-on-error-noninteractive' to a nil value. +*** New commands to describe buttons and widgets. +'widget-describe' (on a widget) will pop up a help buffer and give a +description of the properties. Likewise 'button-describe' does the +same for a button. + +--- +*** 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. + +*** New commands 'apropos-next-symbol' and 'apropos-previous-symbol'. +These new navigation commands are bound to 'n' and 'p' in +'apropos-mode'. + +--- +*** The command 'view-lossage' can now be invoked from the menu bar. +The menu bar "Help" menu now has a "Show Recent Inputs" item under the +"Describe" sub-menu. + +--- +*** 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. -** 'redisplay-skip-fontification-on-input' helps Emacs keep up with fast input. +--- +*** 'g' ('revert-buffer') in 'help-mode' no longer requires confirmation. + +** Miscellaneous + ++++ +*** New command 'font-lock-update', bound to 'C-x x f'. +This command updates the syntax highlighting in this buffer. + ++++ +*** New command 'memory-report'. +This command opens a new buffer called "*Memory Report*" and gives a +summary of where Emacs is using memory currently. + ++++ +*** New command 'submit-emacs-patch'. +This works like 'report-emacs-bug', but is more geared towards sending +patches to the Emacs issue tracker. + +*** New face 'apropos-button'. +Applies to buttons that indicate a face. + ++++ +*** New 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'. + ++++ +*** New face 'flat-button'. +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 face 'separator-line'. +This is used by 'make-separator-line' (see below). + +*** 'redisplay-skip-fontification-on-input' helps Emacs keep up with fast input. This is another attempt to solve the problem of handling high key repeat rate and other "slow scrolling" situations. It is hoped it behaves better than 'fast-but-imprecise-scrolling' and 'jit-lock-defer-time'. It is not enabled by default. -+++ -** Modifiers now go outside angle brackets in pretty-printed key bindings. -For example, 'RET' with Control and Meta modifiers is now shown as -'C-M-<return>' instead of '<C-M-return>'. Either variant can be used -as input; functions such as 'kbd' and 'read-kbd-macro' accept both -styles as equivalent (they have done so for a long time). +*** Obsolete aliases are no longer hidden from command completion. +Completion of command names now considers obsolete aliases as +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. + +*** 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 +dimension. +++ -** New user option 'lazy-highlight-no-delay-length'. +*** New user option 'lazy-highlight-no-delay-length'. Lazy highlighting of matches in Isearch now starts immediately if the search string is at least this long. 'lazy-highlight-initial-delay' still applies for shorter search strings, which avoids flicker in the 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-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'), '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 command 'clone-frame' (bound to 'C-x 5 c'). -This is like 'C-x 5 2', but uses the frame parameters of the current -frame instead of 'default-frame-alist'. +*** The user can now customize how "default" values are prompted for. +The new utility function 'format-prompt' has been added which uses the +new 'minibuffer-default-prompt-format' user option to format "default" +prompts. This means that prompts that look like "Enter a number +(default 10)" can be customized to look like, for instance, "Enter a +number [10]", or not have the default displayed at all, like "Enter a +number". (This requires that all callers are altered to use +'format-prompt', though.) --- -** New help window when Emacs prompts before opening a large file. +*** 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 @@ -357,15 +671,26 @@ 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. +*** Emacs now defaults to UTF-8 instead of ISO-8859-1. +This is only for the default, where the user has set no 'LANG' (or +similar) variable or environment. This change should lead to no +user-visible changes for normal usage. + +--- +*** 'global-display-fill-column-indicator-mode' skips some buffers. +By default, turning on 'global-display-fill-column-indicator-mode' +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'. + ++++ +*** 'nobreak-char-display' now also affects all non-ASCII space characters. +Previously, this was limited only to NO-BREAK-SPACE and hyphen +characters. Now it also covers the rest of the non-ASCII Unicode +space characters. +++ -** Improved support for terminal emulators that encode the Meta flag. +*** 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 @@ -375,67 +700,137 @@ Meta characters to Emacs, e.g., send "ESC x" when the user types 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. +--- +*** '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. - -* Editing Changes in Emacs 28.1 +--- +*** Support for the 'strike-through' face attribute on TTY frames. +If your terminal's termcap or terminfo database entry has the 'smxx' +capability defined, Emacs will now emit the prescribed escape +sequences necessary to render faces with the 'strike-through' +attribute on TTY frames. -** 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. +--- +*** TTY menu navigation is now supported in 'xterm-mouse-mode'. +TTY menus support mouse navigation and selection when 'xterm-mouse-mode' +is active. When run on a terminal, clicking on the menu bar with the +mouse now pops up a TTY menu by default instead of running the command +'tmm-menubar'. To restore the old behavior, set the user option +'tty-menu-open-use-tmm' to non-nil. --- -** Dragging a file to Emacs will now also push the name of the file -onto 'file-name-history'. +*** 'M-x report-emacs-bug' will no longer include "Recent messages" section. +These were taken from the "*Messages*" buffer, and may inadvertently +leak information from the reporting user. + +--- +*** 'C-u M-x dig' will now prompt for a query type to use. + +--- +*** Rudimentary support for the 'st' terminal emulator. +Emacs now supports 256 color display on the 'st' terminal emulator. + +--- +*** Prefer "chat.freenode.net" to "irc.freenode.net". +"chat.freenode.net" has been the preferred address for connecting to the +freenode IRC network for years now. Occurrences of "irc.freenode.net" +have been replaced with "chat.freenode.net" throughout Emacs. + +** File Locks +++ -** A prefix arg now causes 'delete-other-frames' to only iconify frames. +*** 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'. -** Menus ++++ +*** New user option 'remote-file-name-inhibit-locks'. +When non-nil, this option suppresses lock files for remote files. +++ -*** 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'. -You can also invoke the context menu by pressing 'S-<F10>'. +*** New minor mode 'lock-file-mode'. +This command, called interactively, toggles the local value of +'create-lockfiles' in the current buffer. + +** Emacs Server +++ -*** The "Edit => Clear" menu item now obeys a rectangular region. +*** New user option 'server-client-instructions'. +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 '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 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 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). +*** 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. ---- -** 'eval-expression' now no longer signals an error on incomplete expressions. -Previously, typing 'M-: ( RET' would result in Emacs saying "End of -file during parsing" and dropping out of the minibuffer. The user -would have to type 'M-: M-p' to edit and redo the expression. Now -Emacs will echo the message and allow the user to continue editing. +** Input methods +++ -** 'eval-last-sexp' now handles 'defvar'/'defcustom'/'defface' specially. -This command would previously not redefine values defined by these -forms, but this command has now been changed to work more like -'eval-defun', and reset the values as specified. +*** Emacs now supports "transient" input methods. +A transient input method is enabled for inserting a single character, +and is then automatically disabled. 'C-x \' temporarily enables the +selected transient input method. Use 'C-u C-x \' to select a +transient input method (which can be different from the input method +enabled by 'C-\'). For example, 'C-u C-x \ compose RET' selects the +'compose' input method; then typing 'C-x \ 1 2' will insert the +character '½', and disable the 'compose' input method afterwards. +You can use 'C-x \' in incremental search to insert a single character +to the search string. + +--- +*** New input method 'compose' based on X Multi_key sequences. + +--- +*** New input method 'iso-transl' with the same keys as 'C-x 8'. +After selecting it as a transient input method with 'C-u C-x \ +iso-transl RET', it supports the same key sequences as 'C-x 8', +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. + +--- +*** 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". + + +* Editing Changes in Emacs 28.1 +++ ** Standalone 'M-y' allows interactive selection from previous kills. @@ -447,21 +842,101 @@ 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'. -'copy-region-blink-delay' specifies a delay to indicate the region -copied by 'kill-ring-save'. 'delete-pair-blink-delay' specifies -a delay to show a paired character to delete. - +++ ** New command 'undo-redo'. It undoes previous undo commands, but doesn't record itself as an undoable command. +++ -** 'read-number' now has its own history variable. -Additionally, the function now accepts a HIST argument which can be -used to specify a custom history variable. +** 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. + ++++ +** New user option 'kill-transform-function'. +This can be used to transform (and suppress) strings from entering the +kill ring. + ++++ +** '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 user option 'tab-first-completion'. +If 'tab-always-indent' is 'complete', this new user option can be used to +further tweak whether to complete or indent. + +--- +** 'indent-tabs-mode' is now a global minor mode instead of just a variable. + +--- +** 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 "Edit => Clear" menu item now obeys a rectangular region. + ++++ +** New command 'revert-buffer-with-fine-grain'. +Revert a buffer trying to be as non-destructive as possible, +preserving markers, properties and overlays. The new variable +'revert-buffer-with-fine-grain-max-seconds' specifies the maximum +number of seconds that 'revert-buffer-with-fine-grain' should spend +trying to be non-destructive. + ++++ +** 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. + ++++ +** 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. + +** 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. + +--- +** New user option 'save-place-abbreviate-file-names'. +This can simplify sharing the ‘save-place-file’ file across +different hosts. + ++++ +** New user option 'word-wrap-by-category'. +When word-wrap is enabled, and this option is non-nil, that allows +Emacs to break lines after more characters than just whitespace +characters. In particular, this significantly improves word-wrapping +for CJK text mixed with Latin text. + +--- +** New user options 'copy-region-blink-delay' and 'delete-pair-blink-delay'. +'copy-region-blink-delay' specifies a delay to indicate the region +copied by 'kill-ring-save'. 'delete-pair-blink-delay' specifies +a delay to show a paired character to delete. + +--- +** 'zap-up-to-char' now uses 'read-char-from-minibuffer'. +This allows navigating through the history of characters that have +been input. This is mostly useful for characters that have complex +input methods where inputting the character again may involve many +keystrokes. +++ ** Input history for 'goto-line' can now be made local to every buffer. @@ -472,7 +947,7 @@ 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. +** New command 'goto-line-relative' for use in a narrowed buffer. It moves point to the line relative to the accessible portion of the narrowed buffer. 'M-g M-g' in Info is rebound to this command. When 'widen-automatically' is non-nil, 'goto-line' widens the narrowed @@ -483,43 +958,146 @@ buffer to be able to move point to the inaccessible portion. ** When called interactively, 'goto-char' now offers the number at point as default. -+++ -** When 'suggest-key-bindings' is non-nil, the completion list of 'M-x' -shows equivalent key bindings for all commands that have them. - ** Autosaving via 'auto-save-visited-mode' can now be inhibited by setting the variable 'auto-save-visited-mode' buffer-locally to nil. -** New commands to describe buttons and widgets have been added. -'widget-describe' (on a widget) will pop up a help buffer and give a -description of the properties. Likewise 'button-describe' does the -same for a button. ++++ +** New command 'C-x C-k Q' to force redisplay in keyboard macros. -** Obsolete aliases are no longer hidden from command completion. -Completion of command names now considers obsolete aliases as -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. + +* Changes in Specialized Modes and Packages in Emacs 28.1 -+++ -** New command 'revert-buffer-with-fine-grain'. -Revert a buffer trying to be as non-destructive as possible, -preserving markers, properties and overlays. The new variable -'revert-buffer-with-fine-grain-max-seconds' specifies the maximum -number of seconds that 'revert-buffer-with-fine-grain' should spend -trying to be non-destructive. +** Isearch +++ -** New command 'memory-report'. -This command opens a new buffer called "*Memory Report*" and gives a -summary of where Emacs is using memory currently. +*** Interactive regular expression search now uses faces for sub-groups. +E.g., 'C-M-s foo-\([0-9]+\)' will now use the 'isearch-group-1' face +on the part of the regexp that matches the sub-expression "[0-9]+". +By default, there are two faces for sub-group highlighting, but you +can define more faces whose names are of the form 'isearch-group-N', +where N are successive numbers above 2. + +This is controlled by the 'search-highlight-submatches' user option. +This feature is available only on terminals that have enough colors to +distinguish between sub-expression highlighting. + +*** 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. +++ -** New user option 'isearch-repeat-on-direction-change'. +*** 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. ++++ +*** Interactive regular expression replace now uses faces for sub-groups. +Like 'search-highlight-submatches', this is controlled by the new user option +'query-replace-highlight-submatches'. + +*** 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. + +** 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-do-chmod'. +As a security precaution, Dired's M command no longer follows symbolic +links. Instead, it changes the symbolic link's own mode; this always +fails on platforms where such modes are immutable. + +--- +*** Behavior change on 'dired-clean-confirm-killing-deleted-buffers'. +Previously, if 'dired-clean-up-buffers-too' was non-nil, and +'dired-clean-confirm-killing-deleted-buffers' was nil, the buffers +wouldn't be killed. This combination will now kill the buffers. + ++++ +*** New user option 'dired-switches-in-mode-line'. +This user option controls how 'ls' switches are displayed in the mode +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. + +*** '=' ('dired-diff') will now put all backup files into the 'M-n' history. +When using '=' on a file with backup files, the default file to use +for diffing is the newest backup file. You can now use 'M-n' to quickly +select a different backup file instead. + ++++ +*** New user option 'dired-maybe-use-globstar'. +If set, enables globstar (recursive globbing) in shells that support +this feature, but turn it off by default. This allows producing +directory listings with files matching a wildcard in all the +subdirectories of a given directory. The new variable +'dired-enable-globstar-in-shell' lists which shells can have globstar +enabled, and how to enable it. + ++++ +*** New user option 'dired-copy-dereference'. +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 +region. The values 'file' and 'line' of this user option define the +details of marking the file at the end of the region. + +*** State changing VC operations are supported in Dired on files and +directories with the help of new command 'dired-vc-next-action'. + ++++ +*** 'dired-jump' and 'dired-jump-other-window' moved from 'dired-x' to 'dired'. +The 'dired-jump' and 'dired-jump-other-window' commands have been +moved from the 'dired-x' package to 'dired'. The user option +'dired-bind-jump' no longer has any effect and is now obsolete. +The commands are now bound to 'C-x C-j' and 'C-x 4 C-j' by default. + +To get the old behavior of 'dired-bind-jump' back and unbind the above +keys, add the following to your init file: + +(global-set-key "\C-x\C-j" nil) +(global-set-key "\C-x4\C-j" nil) + +--- +*** 'dired-query' now uses 'read-char-from-minibuffer'. +Using it instead of 'read-char-choice' allows using 'C-x o' +to switch to the help window displayed after typing 'C-h'. + ** Outline +++ @@ -545,109 +1123,340 @@ highlighting on heading lines using standard outline faces. This works well only when there are no conflicts with faces used by the major mode. +** Ispell + +++ -** 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. +*** 'ispell-comments-and-strings' now accepts START and END arguments, +defaulting to active region when used interactively. - -* Changes in Specialized Modes and Packages in Emacs 28.1 ++++ +*** New command 'ispell-comment-or-string-at-point' is provided. -** Completion List Mode +** Package -New key bindings have been added to 'completion-list-mode': 'n' and -'p' now navigate completions, and 'M-g M-c' switches to the -minibuffer and back to the completion list buffer. +--- +*** '/ 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. -** 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. ++++ +*** New command 'package-browse-url' and keystroke 'w'. + ++++ +*** New commands to filter the package list. +The filter commands are bound to the following keys: + +key binding +--- ------- +/ a package-menu-filter-by-archive +/ d package-menu-filter-by-description +/ k package-menu-filter-by-keyword +/ N package-menu-filter-by-name-or-description +/ n package-menu-filter-by-name +/ s package-menu-filter-by-status +/ v package-menu-filter-by-version +/ m package-menu-filter-marked +/ 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. -** 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. +*** Column widths in 'list-packages' display can now be customized. +See the new user options 'package-name-column-width', +'package-version-column-width', 'package-status-column-width', and +'package-archive-column-width'. + +** Info + --- -*** 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. +*** 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. -** Bindat +** Abbrev mode +++ -*** 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. +*** Emacs can now suggest to use an abbrev based on text you type. +A new user option, 'abbrev-suggest', enables the new abbrev suggestion +feature. When enabled, if a user manually types a piece of text that +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. -** pcase +** Bookmarks -+++ -*** 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. +*** 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 'pred' pattern can now take the form '(pred (not FUN))'. -This is like '(pred (lambda (x) (not (FUN x))))' but results -in better code. +--- +*** 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 function 'pcase-compile-patterns' to write other macros. +*** New user option 'bookmark-fontify'. +If non-nil, setting a bookmark will colorize the current line with +'bookmark-face'. -*** 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 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. -*** New macro 'pcase-setq' -This macro is the 'setq' equivalent of 'pcase-let', which allows for -destructuring patterns in a 'setq' form. +** Recentf + +--- +*** The recentf files are no longer backed up. + +--- +*** 'recentf-auto-cleanup' time string now repeats. +When 'recentf-auto-cleanup' is set to a time string, it now repeats +every day, rather than only running once after the mode is turned on. + +** Calc + +--- +*** The behavior when doing forward-delete has been changed. +Previously, using the 'C-d' command would delete the final number in +the input field, no matter where point was. This has been changed to +work more traditionally, with 'C-d' deleting the next character. +Likewise, point isn't moved to the end of the string before inserting +digits. +++ -** profiler.el -The results displayed by 'profiler-report' now have the usage figures -at the left hand side followed by the function name. This is intended -to make better use of the horizontal space, in particular eliminating -the truncation of function names. There is no way to get the former -layout back. +*** Setting the word size to zero disables word clipping. +The word size normally clips the results of certain bit-oriented +operations such as shifts and bitwise XOR. A word size of zero, set +by 'b w', makes the operation have effect on the whole argument values +and the result is not truncated in any way. -** Loading dunnet.el in batch mode doesn't start the game any more. -Instead you need to do "emacs -f dun-batch" to start the game in -batch mode. +--- +*** The '/' operator now has higher precedence in (La)TeX input mode. +It no longer has lower precedence than '+' and '-'. -** Emacs Server +--- +*** Calc now marks its windows dedicated. +The new user option 'calc-make-windows-dedicated' controls this. It +is t by default; set to nil to get back the old behavior. + +** Calendar +++ -*** New user option 'server-client-instructions'. -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 user option 'calendar-time-zone-style'. +If 'numeric', calendar functions (eg 'calendar-sunrise-sunset') that display +time zones will use a form like "+0100" instead of "CET". + +** 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. + +** Flyspell mode +++ -*** 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. +*** Corrections and actions menu can be optionally bound to 'mouse-3'. +When Flyspell mode highlights a word as misspelled, you can click on +it to display a menu of possible corrections and actions. You can now +easily bind this menu to 'down-mouse-3' (usually the right mouse button) +instead of 'mouse-2' (the default) by enabling 'context-menu-mode'. + +--- +*** The current dictionary is now displayed in the minor mode lighter. +Clicking the dictionary name changes the current dictionary. + +** 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'. + +** Grep +++ -*** 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. +*** New user option 'grep-match-regexp' matches grep markers to highlight. +Grep emits SGR ANSI escape sequences to color its output. The new +user option 'grep-match-regexp' holds the regular expression to match +the appropriate markers in order to provide highlighting in the source +buffer. The user option can be customized to accommodate other +grep-like tools. -** Perl mode +--- +*** The 'lgrep' command now ignores directories. +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 face 'perl-non-scalar-variable'. -This is used to fontify non-scalar variables. +*** New utility function 'grep-file-at-point'. +This returns the name of the file at point (if any) in 'grep-mode' +buffers. + +** Shell + +--- +*** New command in 'shell-mode': 'narrow-to-prompt'. +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. + +** term-mode + +--- +*** New user option 'term-scroll-snap-to-bottom'. +By default, 'term' and 'ansi-term' will now recenter the buffer so +that the prompt is on the final line in the window. Setting this new +user option to nil inhibits this behavior. + +--- +*** New user option 'term-set-terminal-size' +If non-nil, the 'LINES' and 'COLUMNS' environment variables will be set +based on the current window size. In previous versions of Emacs, this +was always done (and that could lead to odd displays when resizing the +window after starting). This variable defaults to nil. + +** Eshell + +--- +*** 'eshell-hist-ignoredups' can now also be used to mimic "erasedups" in bash. + +--- +*** Environment variable 'INSIDE_EMACS' is now copied to subprocesses. +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. +This allows users to use (define-key eshell-mode-map ...) as usual. +Some modules have their own minor mode now to account for these +changes. + +** Archive mode + +--- +*** Archive Mode can now parse ".squashfs" files. + +*** Can now modify members of 'ar' archives. + +*** Display of summaries unified between backends. + +*** New user option 'archive-hidden-columns' and command +'archive-hideshow-column'. These let you control which columns are +displayed and which are kept hidden. + +--- +*** New command bound to 'C': 'archive-copy-file'. +This command extracts the file under point and writes the data to a +file. + +** browse-url + +*** Added support for custom URL handlers. +There is a new variable 'browse-url-default-handlers' and a user +option 'browse-url-handlers' being alists with '(REGEXP-OR-PREDICATE +. FUNCTION)' entries allowing to define different browsing FUNCTIONs +depending on the URL to be browsed. The variable is for default +handlers provided by Emacs itself or external packages, the user +option is for the user (and allows for overriding the default +handlers). + +Formerly, one could do the same by setting +'browse-url-browser-function' to such an alist. This usage is still +supported but deprecated. + +*** Categorization of browsing commands in internal vs. external. +All standard browsing commands such as 'browse-url-firefox', +'browse-url-mail', or 'eww' have been categorized into internal (URL +is browsed in Emacs) or external (an external application is spawned +with the URL). This is done by adding a 'browse-url-browser-kind' +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. +This support has been obsolete since 25.1. + +** Completion List Mode +New key bindings have been added to 'completion-list-mode': 'n' and +'p' now navigate completions, and 'M-g M-c' switches to the +minibuffer and back to the completion list buffer. + ++++ +** profiler.el +The results displayed by 'profiler-report' now have the usage figures +at the left hand side followed by the function name. This is intended +to make better use of the horizontal space, in particular eliminating +the truncation of function names. There is no way to get the former +layout back. ** Python mode @@ -665,12 +1474,11 @@ The command previously extended the start of the region to the start of the line, but will now actually send the marked region, as documented. -** Ruby mode +** Perl 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. +*** New face 'perl-non-scalar-variable'. +This is used to fontify non-scalar variables. ** Icomplete @@ -702,12 +1510,12 @@ 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 -buttons which allow making permanent changes to the treatment of that -warning. Automatic showing of the warning can be disabled (although -it is still logged to the "*Messages*" buffer), or the warning can be -disabled entirely. +*** Change in meaning of 'icomplete-show-matches-on-no-input'. +Previously, choosing a different completion with commands like 'C-.' +and then hitting 'RET' would choose the default completion. Doing this +will now choose the completion under point instead. Also when this option +is nil, completions are not shown when the minibuffer reads a file name +with initial input as the default directory. ** mspool.el @@ -723,117 +1531,6 @@ These options include 'windmove-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 -previously selected window. - -*** New function 'window-bump-use-time'. -This updates the use time of a window. - -*** The key prefix 'C-x 4 1' displays next command buffer in the same window. -It's bound to the command 'same-window-prefix' that requests the buffer -of the next command to be displayed in the same window. - -*** The key prefix 'C-x 4 4' displays next command buffer in a new window. -It's bound to the command 'other-window-prefix' that requests the buffer -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. - -** Tab Bars - -*** The key prefix 'C-x t t' displays next command buffer in a new tab. -It's bound to the command 'other-tab-prefix' that requests the buffer -of the next command to be displayed in a new tab. - -+++ -*** New command 'C-x t C-r' to open file read-only in other tab. - ---- -*** The tab bar is frame-local when 'tab-bar-show' is a number. -Show/hide the tab bar independently for each frame, according to the -value of 'tab-bar-show'. - ---- -*** New command 'toggle-frame-tab-bar'. -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. - ---- -*** New tab-line faces and options. -The face 'tab-line-tab-special' is used for tabs whose buffers are -special, i.e. not file-backed. The face -'tab-line-tab-inactive-alternate' is used to display inactive tabs -with an alternating background color, making them easier to -distinguish between, especially if the face 'tab-line-tab' is -configured to not display with a box; this alternate face is only -applied when the option 'tab-line-tab-face-functions' is -so-configured. That option may also be used to customize tab-line -faces in other ways. - ** Occur mode *** New bindings in occur-mode, 'next-error-no-select' bound to 'n' and @@ -858,40 +1555,10 @@ 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 - -+++ -*** The macro 'oref-default' can now be used with 'setf'. -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. -** Archive mode - ---- -*** Archive Mode can now parse ".squashfs" files. - -*** Can now modify members of 'ar' archives. - -*** Display of summaries unified between backends. - -*** New user option 'archive-hidden-columns' and command -'archive-hideshow-column'. These let you control which columns are -displayed and which are kept hidden. - ---- -*** New command bound to 'C': 'archive-copy-file'. -This command extracts the file under point and writes the data to a -file. - ** Emacs Lisp mode *** The mode-line now indicates whether we're using lexical or dynamic scoping. @@ -901,101 +1568,6 @@ The presence of a space between an open paren and a symbol now is taken as a statement by the programmer that this should be indented as a data list rather than as a piece of code. -** Calendar - -+++ -*** New user option 'calendar-time-zone-style'. -If 'numeric', calendar functions (eg 'calendar-sunrise-sunset') that display -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-do-chmod'. -As a security precaution, Dired's M command no longer follows symbolic -links. Instead, it changes the symbolic link's own mode; this always -fails on platforms where such modes are immutable. - ---- -*** Behavior change on 'dired-clean-confirm-killing-deleted-buffers'. -Previously, if 'dired-clean-up-buffers-too' was non-nil, and -'dired-clean-confirm-killing-deleted-buffers' was nil, the buffers -wouldn't be killed. This combination will now kill the buffers. - -+++ -*** New user option 'dired-switches-in-mode-line'. -This user option controls how 'ls' switches are displayed in the mode -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. - -*** '=' ('dired-diff') will now put all backup files into the 'M-n' history. -When using '=' on a file with backup files, the default file to use -for diffing is the newest backup file. You can now use 'M-n' to quickly -select a different backup file instead. - -+++ -*** New user option 'dired-maybe-use-globstar'. -If set, enables globstar (recursive globbing) in shells that support -this feature, but turn it off by default. This allows producing -directory listings with files matching a wildcard in all the -subdirectories of a given directory. The new variable -'dired-enable-globstar-in-shell' lists which shells can have globstar -enabled, and how to enable it. - -+++ -*** New user option 'dired-copy-dereference'. -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 -region. The values 'file' and 'line' of this user option define the -details of marking the file at the end of the region. - -*** State changing VC operations are supported in Dired on files and -directories with the help of new command 'dired-vc-next-action'. - -+++ -*** 'dired-jump' and 'dired-jump-other-window' moved from 'dired-x' to 'dired'. -The 'dired-jump' and 'dired-jump-other-window' commands have been -moved from the 'dired-x' package to 'dired'. The user option -'dired-bind-jump' no longer has any effect and is now obsolete. -The commands are now bound to 'C-x C-j' and 'C-x 4 C-j' by default. - -To get the old behavior of 'dired-bind-jump' back and unbind the above -keys, add the following to your init file: - -(global-set-key "\C-x\C-j" nil) -(global-set-key "\C-x4\C-j" nil) - ** Change Logs and VC +++ @@ -1265,269 +1837,11 @@ messages, and will then be used when sending with 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 - -+++ -*** New user option 'grep-match-regexp' matches grep markers to highlight. -Grep emits SGR ANSI escape sequences to color its output. The new -user option 'grep-match-regexp' holds the regular expression to match -the appropriate markers in order to provide highlighting in the source -buffer. The user option can be customized to accommodate other -grep-like tools. - ---- -*** The 'lgrep' command now ignores directories. -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 -recorded for the purpose of 'view-lossage'. - ---- -*** The command 'view-lossage' can now be invoked from the menu bar. -The menu bar "Help" menu now has a "Show Recent Inputs" item under the -"Describe" sub-menu. - -** Input methods - -+++ -*** Emacs now supports "transient" input methods. -A transient input method is enabled for inserting a single character, -and is then automatically disabled. 'C-x \' temporarily enables the -selected transient input method. Use 'C-u C-x \' to select a -transient input method (which can be different from the input method -enabled by 'C-\'). For example, 'C-u C-x \ compose RET' selects the -'compose' input method; then typing 'C-x \ 1 2' will insert the -character '½', and disable the 'compose' input method afterwards. -You can use 'C-x \' in incremental search to insert a single character -to the search string. - ---- -*** New input method 'compose' based on X Multi_key sequences. - ---- -*** New input method 'iso-transl' with the same keys as 'C-x 8'. -After selecting it as a transient input method with 'C-u C-x \ -iso-transl RET', it supports the same key sequences as 'C-x 8', -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. - ---- -*** 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 - -+++ -*** 'ispell-comments-and-strings' now accepts START and END arguments, -defaulting to active region when used interactively. - -+++ -*** New command 'ispell-comment-or-string-at-point' is provided. - ---- -** The old non-SMIE indentation of 'sh-mode' has been removed. - ---- -** The sb-image.el library is now marked obsolete. -This file was a compatibility kludge which is no longer needed. - --- ** Lisp mode now uses 'common-lisp-indent-function'. To revert to the previous behavior, '(setq lisp-indent-function 'lisp-indent-function)' from 'lisp-mode-hook'. -** 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'. - -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. - ---- -*** rfc2368.el is now obsolete. -Use rfc6068.el instead. The main difference is that -'rfc2368-parse-mailto-url' and 'rfc2368-unhexify-string' assumed that -the strings were all-ASCII, while 'rfc6068-parse-mailto-url' and -'rfc6068-unhexify-string' parse UTF-8 strings. - -+++ -*** 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 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 +++ @@ -1566,42 +1880,6 @@ by the ElDoc library itself. Functions in 'eldoc-documentation-functions' don't need to worry about consulting it when producing a doc string. -** Shell - ---- -*** New command in 'shell-mode': 'narrow-to-prompt'. -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. - -** Eshell - ---- -*** 'eshell-hist-ignoredups' can now also be used to mimic "erasedups" in bash. - ---- -*** Environment variable 'INSIDE_EMACS' is now copied to subprocesses. -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. -This allows users to use (define-key eshell-mode-map ...) as usual. -Some modules have their own minor mode now to account for these -changes. - -** EUDC - -+++ -*** New macOS Contacts backend. -This backend works on newer versions of macOS and is generally -preferred over the eudcb-mab.el backend. - ** Tramp +++ @@ -1662,71 +1940,6 @@ t. Previously, assigning a new template to an already defined tag had no effect. -** map.el - -*** Pcase 'map' pattern added keyword symbols abbreviation. -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: - -key binding ---- ------- -/ a package-menu-filter-by-archive -/ d package-menu-filter-by-description -/ k package-menu-filter-by-keyword -/ N package-menu-filter-by-name-or-description -/ n package-menu-filter-by-name -/ s package-menu-filter-by-status -/ v package-menu-filter-by-version -/ m package-menu-filter-marked -/ 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', -'package-version-column-width', 'package-status-column-width', and -'package-archive-column-width'. - ** gdb-mi *** New user option 'gdb-registers-enable-filter'. @@ -1759,12 +1972,6 @@ Control source file display by 'gdb-display-source-buffer-action'. This means that the default coding-system is now used to decode strings and source file names from GDB. -** Gravatar - ---- -*** New user option 'gravatar-service' for host to query for gravatars. -Defaults to 'libravatar', with 'unicornify' and 'gravatar' as options. - ** Compilation mode --- @@ -1854,52 +2061,6 @@ 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'. -These new navigation commands are bound to 'n' and 'p' in -'apropos-mode'. - -*** 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. @@ -1933,40 +2094,6 @@ To enable, add it to appropriate entries in 'c-offsets-alist', e.g.: c-lineup-arglist)) (c-set-offset 'statement-cont '(c-lineup-ternary-bodies +)) -** browse-url - -*** Added support for custom URL handlers. -There is a new variable 'browse-url-default-handlers' and a user -option 'browse-url-handlers' being alists with '(REGEXP-OR-PREDICATE -. FUNCTION)' entries allowing to define different browsing FUNCTIONs -depending on the URL to be browsed. The variable is for default -handlers provided by Emacs itself or external packages, the user -option is for the user (and allows for overriding the default -handlers). - -Formerly, one could do the same by setting -'browse-url-browser-function' to such an alist. This usage is still -supported but deprecated. - -*** Categorization of browsing commands in internal vs. external. -All standard browsing commands such as 'browse-url-firefox', -'browse-url-mail', or 'eww' have been categorized into internal (URL -is browsed in Emacs) or external (an external application is spawned -with the URL). This is done by adding a 'browse-url-browser-kind' -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. -This support has been obsolete since 25.1. - ** SHR --- @@ -1987,6 +2114,10 @@ to a more readable text. Set this user option to nil to get the previous behavior of rendering as wide as the 'window-width' allows. If 'shr-width' is non-nil, it overrides this variable. +--- +*** New faces for heading elements. +Those are 'shr-h1', 'shr-h2', 'shr-h3', 'shr-h4', 'shr-h5', 'shr-h6'. + ** Images --- @@ -2208,101 +2339,9 @@ binding in 'xref--xref-buffer-mode-map'. --- *** New user option 'etags-xref-prefer-current-file'. -When non-nil, 'M-.' matches for identifiers in the file visited by the +When non-nil, matches for identifiers in the file visited by the current buffer will be shown first in the "*xref*" buffer. -** json.el - ---- -*** JSON number parsing is now stricter. -Numbers with a leading plus sign, leading zeros, or a missing integer -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. -Previously 'xml-print' would produce invalid XML when given a string -with characters that are not valid in XML (see -https://www.w3.org/TR/xml/#charsets). Now it rejects such strings. - -** erc - ---- -*** erc-services.el now supports NickServ passwords from auth-source. -The 'erc-use-auth-source-for-nickserv-password' user option enables -querying auth-source for NickServ passwords. To enable this, add the -following to your init file: - - (setq erc-prompt-for-nickserv-password nil - erc-use-auth-source-for-nickserv-password t) - ---- -*** The '/ignore' command will now ask for a timeout to stop ignoring the user. -Allowed inputs are seconds or ISO8601-like periods like "1h" or "4h30m". - ---- -*** ERC now recognizes 'C-]' for italic text. -Italic text is displayed in the new 'erc-italic-face'. - ---- -*** The erc-compat.el library is now marked obsolete. -This file contained ERC compatibility code for Emacs 21 and XEmacs -which is no longer needed. - ---- -*** erc-match.el now supports 'message' highlight type (not including the nick). -The 'erc-current-nick-highlight-type', 'erc-pal-highlight-type', -'erc-fool-highlight-type', 'erc-keyword-highlight-type', and -'erc-dangerous-host-highlight-type' variables now support a 'message' -type for highlighting the entire message but not the sender's nick. - -*** erc-status-sidebar.el is now part of ERC. -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 --- @@ -2346,57 +2385,6 @@ custom rules, see the variables 'bug-reference-setup-from-vc-alist', It's bound to the 'C-c C-c f' keystroke, and prompts for a local file name. -** Recentf - ---- -*** The recentf files are no longer backed up. - ---- -*** 'recentf-auto-cleanup' time string now repeats. -When 'recentf-auto-cleanup' is set to a time string, it now repeats -every day, rather than only running once after the mode is turned on. - -** Calc - ---- -*** The behavior when doing forward-delete has been changed. -Previously, using the 'C-d' command would delete the final number in -the input field, no matter where point was. This has been changed to -work more traditionally, with 'C-d' deleting the next character. -Likewise, point isn't moved to the end of the string before inserting -digits. - -+++ -*** Setting the word size to zero disables word clipping. -The word size normally clips the results of certain bit-oriented -operations such as shifts and bitwise XOR. A word size of zero, set -by 'b w', makes the operation have effect on the whole argument values -and the result is not truncated in any way. - ---- -*** The '/' operator now has higher precedence in (La)TeX input mode. -It no longer has lower precedence than '+' and '-'. - ---- -*** Calc now marks its windows dedicated. -The new user option 'calc-make-windows-dedicated' controls this. It -is t by default; set to nil to get back the old behavior. - -** term-mode - ---- -*** New user option 'term-scroll-snap-to-bottom'. -By default, 'term' and 'ansi-term' will now recenter the buffer so -that the prompt is on the final line in the window. Setting this new -user option to nil inhibits this behavior. - ---- -*** New user option 'term-set-terminal-size' -If non-nil, the 'LINES' and 'COLUMNS' environment variables will be set -based on the current window size. In previous versions of Emacs, this -was always done (and that could lead to odd displays when resizing the -window after starting). This variable defaults to nil. - ** Widget +++ @@ -2438,56 +2426,23 @@ buttons in it. This function takes a string and returns a string propertized in a way that makes it a valid button. -** subr-x -+++ -*** A number of new string manipulation functions have been added. -'string-clean-whitespace', 'string-fill', 'string-limit', -'string-lines', 'string-pad' and 'string-chop-newline'. - -*** New macro 'named-let' that provides Scheme's "named let" looping construct. +** thing-at-point -** thingatpt ++++ +*** 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. +++ *** New variable 'thing-at-point-provider-alist'. This allows mode-specific alterations to how 'thing-at-point' works. --- -*** thingatpt now respects fields. +*** thing-at-point now respects fields. 'thing-at-point' (and all functions that use it, like 'symbol-at-point') will narrow to the current field (if any) before trying to identify the thing at point. -** 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 --- @@ -2503,74 +2458,13 @@ images are marked. ** Miscellaneous -+++ -*** New user option 'file-preserve-symlinks-on-save'. -This controls what Emacs does when saving buffers that visit files via -symbolic links, and 'file-precious-flag' is non-nil. - -+++ -*** New user option 'copy-directory-create-symlink'. -If non-nil, will make `copy-directory' (when used on a symbolic -link) copy the link instead of following the link. The default is -nil, so the default behavior is unchanged. - -+++ -*** 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', @@ -2583,28 +2477,8 @@ 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. @@ -2614,60 +2488,16 @@ This can be used to change the priority of the hl-line overlays. 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. - --- *** New user option 'remember-diary-regexp'. --- *** New user option 'remember-text-format-function'. -*** New function 'buffer-line-statistics'. -This function returns some statistics about the line lengths in a buffer. - -+++ -*** New variable 'inhibit-interaction' to make user prompts signal an error. -If this is bound to something non-nil, functions like -'read-from-minibuffer', 'read-char' (and related) will signal an -'inhibited-interaction' error. - ---- -*** 'process-attributes' now works under OpenBSD, too. - -+++ -*** New button face 'flat-button'. -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 -the length of a (long) list is being computed just to compare this -length to a number). - ---- -*** 'remove-hook' is now an interactive command. - --- *** New user option 'authinfo-hide-elements'. This can be set to nil to inhibit hiding passwords in ".authinfo" files. -+++ -*** New variable 'current-minibuffer-command'. -This is like 'this-command', but it is bound recursively when entering -the minibuffer. - -+++ -*** New function 'object-intervals'. -This function returns a copy of the list of intervals (i.e., text -properties) in the object in question (which must either be a string -or a buffer). - --- *** 'hexl-mode' scrolling commands now heed 'next-screen-context-lines'. Previously, 'hexl-scroll-down' and 'hexl-scroll-up' would scroll @@ -2675,25 +2505,6 @@ up/down an entire window, but they now work more like the standard scrolling commands. --- -*** Errors in 'kill-emacs-hook' no longer prevent Emacs from shutting down. -If a function in that hook signals an error in an interactive Emacs, -the user will be prompted on whether to continue. If the user doesn't -answer within five seconds, Emacs will continue shutting down anyway. - ---- -*** iso-transl is now preloaded. -This means that keystrokes like 'Alt-[' are defined by default, -instead of only becoming available after doing (for instance) -'C-x 8 <letter>'. - -*** New user option 'completions-detailed'. -When non-nil, some commands like 'describe-symbol' show more detailed -completions with more information in completion prefix and suffix. - ---- -*** User option 'completions-format' supports a new value 'one-column'. - ---- *** New user option 'bibtex-unify-case-function'. This new option allows the user to customize how case is converted when unifying entries. @@ -2702,115 +2513,17 @@ when unifying entries. *** The user option 'bibtex-maintain-sorted-entries' now permits user-defined sorting schemes. -+++ -*** 'format-seconds' can now be used for sub-second times. -The new optional "," parameter has been added, and -'(format-seconds "%mm %,1ss" 66.4)' will now result in "1m 6.4s". - ---- -*** 'global-display-fill-column-indicator-mode' skips some buffers. -By default, turning on 'global-display-fill-column-indicator-mode' -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 'next-error-message-highlight'. -In addition to a fringe arrow, 'next-error' error may now optionally -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 -further tweak whether to complete or indent. - ---- -*** 'dired-query' now uses 'read-char-from-minibuffer'. -Using it instead of 'read-char-choice' allows using 'C-x o' -to switch to the help window displayed after typing 'C-h'. - ---- -*** 'zap-up-to-char' now uses 'read-char-from-minibuffer'. -This allows navigating through the history of characters that have -been input. This is mostly useful for characters that have complex -input methods where inputting the character again may involve many -keystrokes. - -+++ -*** Interactive regular expression search now uses faces for sub-groups. -E.g., 'C-M-s foo-\([0-9]+\)' will now use the 'isearch-group-1' face -on the part of the regexp that matches the sub-expression "[0-9]+". -By default, there are two faces for sub-group highlighting, but you -can define more faces whose names are of the form 'isearch-group-N', -where N are successive numbers above 2. - -This is controlled by the 'search-highlight-submatches' user option. -This feature is available only on terminals that have enough colors to -distinguish between sub-expression highlighting. - -+++ -*** Interactive regular expression replace now uses faces for sub-groups. -Like 'search-highlight-submatches', this is controlled by the new user option -'query-replace-highlight-submatches'. - --- *** New user option 'reveal-auto-hide'. If non-nil (the default), revealed text is automatically hidden when 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 command 'submit-emacs-patch'. -This works like 'report-emacs-bug', but is more geared towards sending -patches to the Emacs issue tracker. - -+++ -*** The user can now customize how "default" values are prompted for. -The new utility function 'format-prompt' has been added which uses the -new 'minibuffer-default-prompt-format' user option to format "default" -prompts. This means that prompts that look like "Enter a number -(default 10)" can be customized to look like, for instance, "Enter a -number [10]", or not have the default displayed at all, like "Enter a -number". (This requires that all callers are altered to use -'format-prompt', though.) - -+++ -*** New global mode 'global-goto-address-mode'. -This will enable 'goto-address-mode' in all buffers. - ---- -*** 'C-s' in 'M-x' now searches over completions again. -In Emacs 23, typing 'M-x' ('read-extended-command') and then 'C-s' (to -do an interactive search) would search over possible completions. -This was lost in Emacs 24, but is now back again. - ---- -*** 'M-x report-emacs-bug' will no longer include "Recent messages" section. -These were taken from the "*Messages*" buffer, and may inadvertently -leak information from the reporting user. - ---- -*** 'count-windows' now takes an optional parameter ALL-FRAMES. -The semantics are as with 'walk-windows'. - --- *** 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') @@ -2818,14 +2531,6 @@ and 'doc-view-center-page-vertically' (bound to 'c v') center the page horizontally and vertically, respectively. --- -*** Change in meaning of 'icomplete-show-matches-on-no-input'. -Previously, choosing a different completion with commands like 'C-.' -and then hitting 'RET' would choose the default completion. Doing this -will now choose the completion under point instead. Also when this option -is nil, completions are not shown when the minibuffer reads a file name -with initial input as the default directory. - ---- *** The width of the buffer-name column in 'list-buffers' is now dynamic. 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 @@ -2839,60 +2544,12 @@ after every monthly meeting which takes place on the third Thursday, or if you would like to attend a virtual meeting scheduled in a different timezone causing a difference in the date. -** xterm-mouse mode - --- -*** TTY menu navigation is now supported in 'xterm-mouse-mode'. -TTY menus support mouse navigation and selection when 'xterm-mouse-mode' -is active. When run on a terminal, clicking on the menu bar with the -mouse now pops up a TTY menu by default instead of running the command -'tmm-menubar'. To restore the old behavior, set the user option -'tty-menu-open-use-tmm' to non-nil. - -** text-scale-mode - ---- -*** 'text-scale-mode' can now adjust font size of the header line. -When the new buffer local variable 'text-scale-remap-header-line' -is non-nil, 'text-scale-adjust' will also scale the text in the header -line when displaying that buffer. +*** The old non-SMIE indentation of 'sh-mode' has been removed. -This is useful for major modes that arrange their display in a tabular -form below the header line. It is enabled by default in -'tabulated-list-mode' and its derived modes. - -** xwidget-webkit mode - -*** New xwidget commands. -'xwidget-webkit-uri' (return the current URL), 'xwidget-webkit-title' -(return the current title), and 'xwidget-webkit-goto-history' (goto a -point in history). - -*** Pixel-based scrolling. -The 'xwidget-webkit-scroll-up', 'xwidget-webkit-scroll-down' commands -now supports scrolling arbitrary pixel values. It now treats the -optional 2nd argument as the pixel values to scroll. - -*** New commands for scrolling. -The new commands 'xwidget-webkit-scroll-up-line', -'xwidget-webkit-scroll-down-line', 'xwidget-webkit-scroll-forward', -'xwidget-webkit-scroll-backward' can be used to scroll webkit by the -height of lines or width of chars. - -*** New user option 'xwidget-webkit-bookmark-jump-new-session'. -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. +*** Loading dunnet.el in batch mode doesn't start the game any more. +Instead you need to do "emacs -f dun-batch" to start the game in +batch mode. ** Flymake mode @@ -2905,19 +2562,6 @@ and 'flymake-mode-line-counters'. The new user option like 'flymake-mode-line-error-counter', 'flymake-mode-line-warning-counter' and 'flymake-mode-line-note-counter'. -** Flyspell mode - -+++ -*** Corrections and actions menu can be optionally bound to 'mouse-3'. -When Flyspell mode highlights a word as misspelled, you can click on -it to display a menu of possible corrections and actions. You can now -easily bind this menu to 'down-mouse-3' (usually the right mouse button) -instead of 'mouse-2' (the default) by enabling 'context-menu-mode'. - ---- -*** The current dictionary is now displayed in the minor mode lighter. -Clicking the dictionary name changes the current dictionary. - ** Time --- @@ -2947,62 +2591,17 @@ 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 - -+++ -*** Property values can be typed explicitly. -'dbus-register-property' and 'dbus-set-property' accept now optional -type symbols. Both functions propagate D-Bus errors. - -+++ -*** Registered properties can have the new access type ':write'. - -+++ -*** In case of problems, handlers can emit proper D-Bus error messages now. - -+++ -*** D-Bus errors, which have been converted from incoming D-Bus error -messages, contain the error name of that message now. - -+++ -*** D-Bus messages can be monitored with the new command 'dbus-monitor'. - -+++ -*** 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 -'dbus-event-*' accessor functions. - ** CPerl Mode --- *** 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 Conway's book "Perl Best Practices" for indentation and formatting of conditionals. -** Abbrev mode - -+++ -*** Emacs can now suggest to use an abbrev based on text you type. -A new user option, 'abbrev-suggest', enables the new abbrev suggestion -feature. When enabled, if a user manually types a piece of text that -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 +++ @@ -3012,57 +2611,24 @@ 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. +** Etags ---- -*** '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.) ++++ +*** Etags now supports the Mercury programming language. +See https://mercurylang.org. ---- -*** 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'. ++++ +*** 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. ** Comint @@ -3080,17 +2646,134 @@ sequences. *** 'comint-delete-output' can now save deleted text in the kill-ring. Interactively, 'C-u C-c C-o' triggers this new optional behavior. +** erc + +--- +*** erc-services.el now supports NickServ passwords from auth-source. +The 'erc-use-auth-source-for-nickserv-password' user option enables +querying auth-source for NickServ passwords. To enable this, add the +following to your init file: + + (setq erc-prompt-for-nickserv-password nil + erc-use-auth-source-for-nickserv-password t) + +--- +*** The '/ignore' command will now ask for a timeout to stop ignoring the user. +Allowed inputs are seconds or ISO8601-like periods like "1h" or "4h30m". + +--- +*** ERC now recognizes 'C-]' for italic text. +Italic text is displayed in the new 'erc-italic-face'. + +--- +*** The erc-compat.el library is now marked obsolete. +This file contained ERC compatibility code for Emacs 21 and XEmacs +which is no longer needed. + +--- +*** erc-match.el now supports 'message' highlight type (not including the nick). +The 'erc-current-nick-highlight-type', 'erc-pal-highlight-type', +'erc-fool-highlight-type', 'erc-keyword-highlight-type', and +'erc-dangerous-host-highlight-type' variables now support a 'message' +type for highlighting the entire message but not the sender's nick. + +*** erc-status-sidebar.el is now part of ERC. +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'. + +** xwidget-webkit mode + +*** New xwidget commands. +'xwidget-webkit-uri' (return the current URL), 'xwidget-webkit-title' +(return the current title), and 'xwidget-webkit-goto-history' (goto a +point in history). + +*** Pixel-based scrolling. +The 'xwidget-webkit-scroll-up', 'xwidget-webkit-scroll-down' commands +now supports scrolling arbitrary pixel values. It now treats the +optional 2nd argument as the pixel values to scroll. + +*** New commands for scrolling. +The new commands 'xwidget-webkit-scroll-up-line', +'xwidget-webkit-scroll-down-line', 'xwidget-webkit-scroll-forward', +'xwidget-webkit-scroll-backward' can be used to scroll webkit by the +height of lines or width of chars. + +*** New user option 'xwidget-webkit-bookmark-jump-new-session'. +When non-nil, use a new xwidget webkit session after bookmark jump. +Otherwise, it will use 'xwidget-webkit-last-session'. + +** 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. + +** Gravatar + +--- +*** New user option 'gravatar-service' for host to query for gravatars. +Defaults to 'libravatar', with 'unicornify' and 'gravatar' as options. + +** 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'. + * New Modes and Packages in Emacs 28.1 -** Lisp Data mode -The new command 'lisp-data-mode' enables a major mode for buffers -composed of Lisp symbolic expressions that do not form a computer -program. The ".dir-locals.el" file is automatically set to use this -mode, as are other data files produced by Emacs. - -** hierarchy.el -It's a library to create, query, navigate and display hierarchy structures. ++++ +** 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. ** New themes 'modus-vivendi' and 'modus-operandi'. These themes are designed to conform with the highest standard for @@ -3107,13 +2790,25 @@ This is a mode for searching a RFC 2229 dictionary server. the mouse in 'dictionary-tooltip-dictionary' (which must be customized first). -** transient.el +** Lisp Data mode +The new command 'lisp-data-mode' enables a major mode for buffers +composed of Lisp symbolic expressions that do not form a computer +program. The ".dir-locals.el" file is automatically set to use this +mode, as are other data files produced by Emacs. ++++ +** New global mode 'global-goto-address-mode'. +This will enable 'goto-address-mode' in all buffers. + +** 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. +** hierarchy.el +It's a library to create, query, navigate and display hierarchy structures. + * Incompatible Editing Changes in Emacs 28.1 @@ -3153,24 +2848,6 @@ before, you can add the following to your init file: 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 behavior back, -say something like: - - (modify-syntax-entry ?\\ "\\" f90-mode-syntax-table) - -** In 'nroff-mode', 'center-line' is now bound to 'M-o M-s'. -The original key binding was 'M-s', which interfered with I-search, -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. - ** The escape sequence '\e[29~' in Xterm is now mapped to 'menu'. Xterm sends this sequence for both 'F16' and 'Menu' keys It used to be mapped to 'print' but we couldn't find a terminal @@ -3184,10 +2861,81 @@ If non-nil (the default), Emacs pushes pasted text onto the kill ring (if using an xterm-like terminal that supports bracketed paste). Setting this to nil inhibits that. +** '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. + +** In 'nroff-mode', 'center-line' is now bound to 'M-o M-s'. +The original key binding was 'M-s', which interfered with I-search, +since the latter uses 'M-s' as a prefix key of the search prefix map. + +** 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 behavior back, +say something like: + + (modify-syntax-entry ?\\ "\\" f90-mode-syntax-table) + +** 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)) + * Incompatible Lisp Changes in Emacs 28.1 --- +** 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. + +** 'equal' no longer examines some contents of window configurations. +Instead, it considers window configurations to be equal only if they +are 'eq'. To compare contents, use 'compare-window-configurations' +instead. This change helps fix a bug in 'sxhash-equal', which returned +incorrect hashes for window configurations and some other objects. + ++++ +** 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. + +--- +** '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. + ++++ +** Temporary buffers no longer run certain buffer hooks. +The macros 'with-temp-buffer' and 'with-temp-file' no longer run the +hooks 'kill-buffer-hook', 'kill-buffer-query-functions', and +'buffer-list-update-hook' for the temporary buffers they create. This +avoids slowing them down when a lot of these hooks are defined. + +** New face 'child-frame-border' and frame parameter 'child-frame-border-width'. +The face and width of child frames borders can now be determined +separately from those of normal frames. To minimize backward +incompatibility, child frames without a 'child-frame-border-width' +parameter will fall back to using 'internal-border-width'. However, +the new 'child-frame-border' face does constitute a breaking change +since child frames' borders no longer use the 'internal-border' face. + +--- ** 'run-at-time' now tries harder to implement the t TIME parameter. If TIME is t, the timer runs at an integral multiple of REPEAT. (I.e., if given a REPEAT of 60, it'll run at 08:11:00, 08:12:00, @@ -3205,6 +2953,11 @@ vice versa, which would be confusing when passing in OLDSTATE, which refers to the old state at FROM. +++ +** '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. + ++++ ** 'overlays-in' now handles zero-length overlays slightly differently. Previously, zero-length overlays at the end of the buffer were included in the result (if the region queried for stopped at that position). @@ -3221,107 +2974,134 @@ 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. ++++ +** '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. + +** XML serialization functions now reject invalid characters. +Previously 'xml-print' would produce invalid XML when given a string +with characters that are not valid in XML (see +https://www.w3.org/TR/xml/#charsets). Now it rejects such strings. + + --- -** '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. +** JSON number parsing is now stricter. +Numbers with a leading plus sign, leading zeros, or a missing integer +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. + +** 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. --- -** 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. +** 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 '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. +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. +++ -** '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. +** 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 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'. -** 'set-process-buffer' now updates the process mark. -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. +** When its first argument is a string, 'make-text-button' no longer +modifies the string's text properties; instead, it uses and returns +a copy of the string. This helps avoid trouble when strings are +shared or constants. + +++ ** 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 properties before returning. This affects things like 'completing-read'. -** 'equal' no longer examines some contents of window configurations. -Instead, it considers window configurations to be equal only if they -are 'eq'. To compare contents, use 'compare-window-configurations' -instead. This change helps fix a bug in 'sxhash-equal', which returned -incorrect hashes for window configurations and some other objects. +** 'dns-query' now consistently uses Lisp integers to represent integers. +Formerly it made an exception for integer components of SOA records, +because SOA serial numbers can exceed fixnum ranges on 32-bit platforms. +Emacs now supports bignums so this old glitch is no longer needed. -** When its first argument is a string, 'make-text-button' no longer -modifies the string's text properties; instead, it uses and returns -a copy of the string. This helps avoid trouble when strings are -shared or constants. ++++ +** 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. +++ -** Temporary buffers no longer run certain buffer hooks. -The macros 'with-temp-buffer' and 'with-temp-file' no longer run the -hooks 'kill-buffer-hook', 'kill-buffer-query-functions', and -'buffer-list-update-hook' for the temporary buffers they create. This -avoids slowing them down when a lot of these hooks are defined. +** The error 'ftp-error' belongs also to category 'remote-file-error'. -** New face 'child-frame-border' and frame parameter 'child-frame-border-width'. -The face and width of child frames borders can now be determined -separately from those of normal frames. To minimize backward -incompatibility, child frames without a 'child-frame-border-width' -parameter will fall back to using 'internal-border-width'. However, -the new 'child-frame-border' face does constitute a breaking change -since child frames' borders no longer use the 'internal-border' face. +** 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', +'define-obsolete-function-alias', 'make-obsolete-variable', +'define-obsolete-variable-alias'. + ++++ +** 'inhibit-nul-byte-detection' is renamed to 'inhibit-null-byte-detection'. --- -** The obsolete function 'thread-alive-p' has been removed. +** Some functions are no longer considered safe by 'unsafep': +'replace-regexp-in-string', 'catch', 'throw', 'error', 'signal' +and 'play-sound-file'. -** 'dns-query' now consistently uses Lisp integers to represent integers. -Formerly it made an exception for integer components of SOA records, -because SOA serial numbers can exceed fixnum ranges on 32-bit platforms. -Emacs now supports bignums so this old glitch is no longer needed. +--- +** '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. --- -** The new function 'dns-query-asynchronous' has been added. -It takes the same parameters as 'dns-query', but adds a callback -parameter. +** '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. ** The Lisp variables 'previous-system-messages-locale' and 'previous-system-time-locale' have been removed, as they were created by mistake and were not useful to Lisp code. --- +** Function 'lm-maintainer' is replaced with 'lm-maintainers'. +The former is now declared obsolete. + +** 'facemenu.el' is no longer preloaded. +To use functions/variables from the package, you now have to say +'(require 'facemenu)' or similar. + +** 'facemenu-color-alist' is now obsolete, and is not used. + +** The variable 'keyboard-type' is obsolete and not dynamically scoped any more. + ++++ +** The 'values' variable is now obsolete. +Using it just contributes to the growth of the Emacs memory +footprint. + +--- ** The 'load-dangerous-libraries' variable is now obsolete. It was used to allow loading Lisp libraries compiled by XEmacs, a modified version of Emacs which is no longer actively maintained. @@ -3332,18 +3112,39 @@ 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 rfc2368.el library is now obsolete. +Use rfc6068.el instead. The main difference is that +'rfc2368-parse-mailto-url' and 'rfc2368-unhexify-string' assumed that +the strings were all-ASCII, while 'rfc6068-parse-mailto-url' and +'rfc6068-unhexify-string' parse UTF-8 strings. + +--- ** The inversion.el library is now obsolete. --- ** The metamail.el library is now obsolete. +** Edebug changes + --- -** Some obsolete variable and function aliases in dbus.el have been removed. -In Emacs 24.3, the variable 'dbus-event-error-hooks' was renamed to -'dbus-event-error-functions' and the function -'dbus-call-method-non-blocking' was renamed to 'dbus-call-method'. -The old names, which were kept as obsolete aliases of the new names, -have now been removed. +*** '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. + ++++ +*** 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. + +--- +** The sb-image.el library is now obsolete. +This was a compatibility kludge which is no longer needed. --- ** Some libraries obsolete since Emacs 23 have been removed: @@ -3427,209 +3228,249 @@ ledit.el, lmenu.el, lucid.el and old-whitespace.el. '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', -'define-obsolete-function-alias', 'make-obsolete-variable', -'define-obsolete-variable-alias'. - -** The variable 'keyboard-type' is obsolete and not dynamically scoped any more. - -+++ -** The 'values' variable is now obsolete. -Using it just contributes to the growth of the Emacs memory -footprint. - -+++ -** 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. +--- +** The obsolete function 'thread-alive-p' has been removed. --- -** '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. +** The variable 'force-new-style-backquotes' has been removed. +This removes the final remaining trace of old-style backquotes. --- -** Function 'lm-maintainer' is replaced with 'lm-maintainers'. -The former is now declared obsolete. +** Some obsolete variable and function aliases in dbus.el have been removed. +In Emacs 24.3, the variable 'dbus-event-error-hooks' was renamed to +'dbus-event-error-functions' and the function +'dbus-call-method-non-blocking' was renamed to 'dbus-call-method'. +The old names, which were kept as obsolete aliases of the new names, +have now been removed. * Lisp Changes in Emacs 28.1 +++ -*** Doc strings can now link to customization groups. -Text like "customization group `whitespace'" will be made into a -button. When clicked, it'll take the user to a Custom buffer -displaying that customization group. +** 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 macro 'with-existing-directory'. -This macro binds 'default-directory' to some other existing directory -if 'default-directory' doesn't exist, and then executes the body forms. +** 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. +++ -*** New function 'file-name-concat'. -This appends file name components to a directory name and returns the -result. +** '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. +++ -*** 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). +** '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. ---- -*** ':safe' settings in 'defcustom' are now propagated to the loaddefs files. ++++ +** 'define-globalized-minor-mode' now takes a ':predicate' parameter. +This can be used to control which major modes the minor mode should be +used in. +++ -** 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). +** '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. +++ -** New function 'buffer-local-boundp'. -This predicate says whether a symbol is bound in a specific buffer. +** 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. + ++++ +** The behavior of 'format-spec' is now closer to that of 'format'. +In order for the two functions to behave more consistently, +'format-spec' now pads and truncates based on string width rather than +length, and also supports format specifications that include a +truncating precision field, such as "%.2a". --- -** 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. +** 'defvar' detects the error of defining a variable currently lexically bound. +Such mixes are always signs that the outer lexical binding was an +error and should have used dynamic binding instead. -+++ -** New function 'sxhash-equal-including-properties'. -This is identical to 'sxhash-equal' but accounting also for string -properties. +--- +** New variable 'inhibit-mouse-event-check'. +If bound to non-nil, a command with '(interactive "e")' doesn't signal +an error when invoked by input event that is not a mouse click (e.g., +a key sequence). +++ -** '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. +** Doc strings can now link to customization groups. +Text like "customization group `whitespace'" will be made into a +button. When clicked, it'll take the user to a Custom buffer +displaying that customization group. +++ -** New function 'always'. -This is identical to 'ignore', but returns t instead. +** Buffers can now be created with certain hooks disabled. +The functions 'get-buffer-create' and 'generate-new-buffer' accept a +new optional argument INHIBIT-BUFFER-HOOKS. If non-nil, the new +buffer does not run the hooks 'kill-buffer-hook', +'kill-buffer-query-functions', and 'buffer-list-update-hook'. This +avoids slowing down internal or temporary buffers that are never +presented to users or passed on to other applications. +++ -** 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. +** 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 +the dynamically bound 'generated-autoload-file' variable, the output +file is now a explicit parameter. -+++ -** 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. +--- +** Dragging a file to Emacs will now also push the name of the file +onto 'file-name-history'. + +--- +** The 'easymenu' library is now preloaded. + +--- +** The 'iso-transl' library is now preloaded. +This means that keystrokes like 'Alt-[' are defined by default, +instead of only becoming available after doing (for instance) +'C-x 8 <letter>'. + +--- +** ':safe' settings in 'defcustom' are now propagated to the loaddefs files. +++ -** 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). +** 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. + +** Byte compiler changes +++ -** New variable 'global-minor-modes'. -This variable holds a list of currently enabled global minor modes (as -a list of symbols). +*** New byte-compiler check for missing dynamic variable declarations. +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". +++ -** '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. +*** 'byte-recompile-directory' can now compile symlinked ".el" files. +This is achieved by giving a non-nil FOLLOW-SYMLINKS parameter. + +--- +*** The byte-compiler now warns about too wide documentation strings. +By default, it will warn if a documentation string is wider than the +largest of 'byte-compile-docstring-max-column' or 'fill-column' +characters. +++ -** '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. +*** 'byte-compile-file' optional argument LOAD is now obsolete. +To load the file after byte-compiling, add a call to 'load' from Lisp +or use 'M-x emacs-lisp-byte-compile-and-load' interactively. +** Macroexp --- -** The 'easymenu' library is now preloaded. +*** 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. + +** map.el + +*** Pcase 'map' pattern added keyword symbols abbreviation. +A pattern like '(map :sym)' binds the map's value for ':sym' to 'sym', +equivalent to '(map (:sym sym))'. --- -** New variable 'indent-line-ignored-functions'. -This allows modes to cycle through a set of indentation functions -appropriate for those modes. +*** The function 'map-copy' now uses 'copy-alist' on alists. +This is a slightly deeper copy than the previous 'copy-sequence'. -** New function 'garbage-collect-maybe' to trigger GC early. +--- +*** The function 'map-contains-key' now supports plists. --- -** 'defvar' detects the error of defining a variable currently lexically bound. -Such mixes are always signs that the outer lexical binding was an -error and should have used dynamic binding instead. +*** 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'. -+++ -** New completion function 'affixation-function' to add prefix/suffix. -It accepts a list of completions and should return a list where -each element is a list with three elements: a completion, -a prefix string, and a suffix string. +** pcase +++ -** New completion function 'group-function' for grouping candidates. -It takes two arguments: a completion candidate and a 'transform' flag. +*** 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. +++ -** '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' -and display the result. +*** 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 variables 'read-char-choice-use-read-key' and 'y-or-n-p-use-read-key'. -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 function 'pcase-compile-patterns' to write other macros. ---- -** 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. +*** 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. + +** Edebug specification lists can use some new keywords: +++ -** '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. +**** '&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. +++ -** 'define-globalized-minor-mode' now takes a ':predicate' parameter. -This can be used to control which major modes the minor mode should be -used in. +**** '&error MSG' unconditionally aborts the current edebug instrumentation. +++ -** 'truncate-string-ellipsis' now uses '…' by default. -Modes that use 'truncate-string-to-width' with non-nil, non-string -argument ELLIPSIS, will now indicate truncation using '…' when -the selected frame can display it, and using "..." otherwise. +**** '&name SPEC FUN' extracts the current name from the code matching SPEC. + +** Dynamic modules changes +++ -** 'string-width' now accepts two optional arguments FROM and TO. -This allows calculating the width of a substring without consing a -new string. +*** The module header 'emacs-module.h' now contains type aliases +'emacs_function' and 'emacs_finalizer' for module functions and +finalizers, respectively. +++ -** 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 -the dynamically bound 'generated-autoload-file' variable, the output -file is now a explicit parameter. +*** Module functions can now be made interactive. +Use 'make_interactive' to give a module function an interactive +specification. + ++++ +*** Module functions can now install an optional finalizer that is +called when the function object is garbage-collected. Use +'set_function_finalizer' to set the finalizer and +'get_function_finalizer' to retrieve it. + ++++ +*** Modules can now open a channel to an existing pipe process using +the new module function 'open_channel'. Modules can use this +functionality to asynchronously send data back to Emacs. + ++++ +*** A new module API 'make_unibyte_string' is provided. +It can be used to create Lisp strings with arbitrary byte sequences +(a.k.a. "raw bytes"). +++ ** New function 'string-search'. @@ -3643,13 +3484,20 @@ matching on strings instead of regexps, and does not change the global match state. +++ -** New function 'process-lines-ignore-status'. -This is like 'process-lines', but does not signal an error if the -return status is non-zero. 'process-lines-handling-status' has also -been added, and takes a callback to handle the return status. +** 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). ---- -** 'ascii' is now a coding system alias for 'us-ascii'. +** New string manipulation functions added to subr-x.el. +'string-clean-whitespace', 'string-fill', 'string-limit', +'string-lines', 'string-pad' and 'string-chop-newline'. + ++++ +** New function 'replace-regexp-in-region'. + ++++ +** New function 'replace-string-in-region'. +++ ** New function 'file-name-with-extension'. @@ -3657,37 +3505,108 @@ This function allows a canonical way to set/replace the extension of a file name. +++ +** New function 'file-modes-number-to-symbolic' to convert a numeric +file mode specification into symbolic form. + ++++ +** New function 'file-name-concat'. +This appends file name components to a directory name and returns the +result. + ++++ ** New function 'file-backup-file-names'. This function returns the list of file names of all the backup files of its file argument. +++ -** New utility function 'directory-empty-p'. +** New function 'directory-empty-p'. This predicate tests whether a given file name is an accessible directory and whether it contains no other directories or files. +++ -** 'directory-files' now takes an additional COUNT parameter. -The parameter makes 'directory-files' return COUNT first file names -from a directory. If MATCH is also given, the function will return -first COUNT file names that match the expression. The same COUNT -parameter has been added to 'directory-files-and-attributes'. +** New function 'buffer-local-boundp'. +This predicate says whether a symbol is bound in a specific buffer. +++ -** The 'count-lines' function now takes an optional parameter to -ignore invisible lines. +** New function 'always'. +This is identical to 'ignore', but returns t instead. + ++++ +** New function 'sxhash-equal-including-properties'. +This is identical to 'sxhash-equal' but accounting also for string +properties. + +** New function 'buffer-line-statistics'. +This function returns some statistics about the line lengths in a buffer. --- -** 'count-words' now crosses field boundaries. -Originally, 'count-words' would stop counting at the first field -boundary it encountered; now it keeps counting all the way to the -region's (or buffer's) end. +** New function 'color-values-from-color-spec'. +This can be used to parse RGB color specs in several formats and +convert them to a list '(R G B)' of primary color values. --- ** New function 'custom-add-choice'. This function can be used by modes to add elements to the 'choice' customization type of a variable. +--- +** New function 'decoded-time-period'. +It interprets a decoded time structure as a period and returns the +equivalent period in seconds. + ++++ +** New function 'dom-print'. + ++++ +** New function 'dom-remove-attribute'. + +--- +** New function 'dns-query-asynchronous'. +It takes the same parameters as 'dns-query', but adds a callback +parameter. + +** New function 'garbage-collect-maybe' to trigger GC early. + +--- +** New function 'get-locale-names'. +This utility function returns a list of locale names on the current +system. + ++++ +** New function 'insert-into-buffer'. +This is like 'insert-buffer-substring', but works in the opposite +direction. + ++++ +** 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. + +--- +** 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. + +--- +** New function 'make-separator-line'. +Make a string appropriate for usage as a visual separator line. + ++++ +** New function 'object-intervals'. +This function returns a copy of the list of intervals (i.e., text +properties) in the object in question (which must either be a string +or a buffer). + ++++ +** New function 'process-lines-ignore-status'. +This is like 'process-lines', but does not signal an error if the +return status is non-zero. 'process-lines-handling-status' has also +been added, and takes a callback to handle the return status. + +++ ** New function 'require-theme'. This function is like 'require', but searches 'custom-theme-load-path' @@ -3695,83 +3614,193 @@ 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. +** 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 functions 'null-device' and 'path-separator'. +These functions return the connection local value of the respective +variables. This can be used for remote hosts. + ++++ +** New predicate functions 'length<', 'length>' and 'length='. +Using these functions may be more efficient than using 'length' (if +the length of a (long) list is being computed just to compare this +length to a number). +++ ** New macro 'dlet' to dynamically bind variables. ++++ +** New macro 'with-existing-directory'. +This macro binds 'default-directory' to some other existing directory +if 'default-directory' doesn't exist, and then executes the body forms. + ++++ +** New variable 'current-minibuffer-command'. +This is like 'this-command', but it is bound recursively when entering +the minibuffer. + ++++ +** New variable 'inhibit-interaction' to make user prompts signal an error. +If this is bound to something non-nil, functions like +'read-from-minibuffer', 'read-char' (and related) will signal an +'inhibited-interaction' error. + --- -** The variable 'force-new-style-backquotes' has been removed. -This removes the final remaining trace of old-style backquotes. +** New variable 'indent-line-ignored-functions'. +This allows modes to cycle through a set of indentation functions +appropriate for those modes. -** Mode Lines ++++ +** New variable 'print-integers-as-characters' modifies integer printing. +If this variable is non-nil, character syntax is used for printing +numbers when this makes sense, such as '?A' for 65. +++ -*** 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 variable 'tty-menu-calls-mouse-position-function'. +This controls whether 'mouse-position-function' is called by functions +that retrieve the mouse position when that happens during TTY menu +handling. Lisp programs that set 'mouse-position-function' should +also set this variable non-nil if they are compatible with the tty +menu handling. +++ -*** 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 variables that hold default buffer names for shell output. +The new constants 'shell-command-buffer-name' and +'shell-command-buffer-name-async' store the default buffer names +for the output of, respectively, synchronous and async shell +commands. + +--- +** New variables 'read-char-choice-use-read-key' and 'y-or-n-p-use-read-key'. +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. +++ -*** '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. +** New variable 'global-minor-modes'. +This variable holds a list of currently enabled global minor modes (as +a list of symbols). -** Changes in handling dynamic modules ++++ +** 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). +++ -*** The module header 'emacs-module.h' now contains type aliases -'emacs_function' and 'emacs_finalizer' for module functions and -finalizers, respectively. +** New completion function 'affixation-function' to add prefix/suffix. +It accepts a list of completions and should return a list where +each element is a list with three elements: a completion, +a prefix string, and a suffix string. +++ -*** Module functions can now be made interactive. -Use 'make_interactive' to give a module function an interactive -specification. +** New completion function 'group-function' for grouping candidates. +It takes two arguments: a completion candidate and a 'transform' flag. +++ -*** Module functions can now install an optional finalizer that is -called when the function object is garbage-collected. Use -'set_function_finalizer' to set the finalizer and -'get_function_finalizer' to retrieve it. +** New error symbol 'minibuffer-quit'. +Signaling it has almost the same effect as 'quit' except that it +doesn't cause keyboard macro termination. +++ -*** Modules can now open a channel to an existing pipe process using -the new module function 'open_channel'. Modules can use this -functionality to asynchronously send data back to Emacs. +** New error 'remote-file-error', a subcategory of 'file-error'. +It is signaled if a remote file operation fails due to internal +reasons, and could block Emacs. It does not replace 'file-error' +signals for the usual cases. Timers, process filters and process +functions, which run remote file operations, shall protect themselves +against this error. + +If such an error occurs, please report this as bug via 'M-x report-emacs-bug'. +Until it is solved you could ignore such errors by performing + + (setq debug-ignored-errors (cons 'remote-file-error debug-ignored-errors)) + +** New macro 'named-let' added to subr-x.el. +It provides Scheme's "named let" looping construct. + +--- +** 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. + +** 'set-process-buffer' now updates the process mark. +The mark will be set to point to the end of the new buffer. +++ -*** A new module API 'make_unibyte_string' is provided. -It can be used to create Lisp strings with arbitrary byte sequences -(a.k.a. "raw bytes"). +** '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. +++ -** 'file-modes', 'set-file-modes', and 'set-file-times' now have an -optional argument specifying whether to follow symbolic links. +** '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' +and display the result. +++ -** 'parse-time-string' can now parse ISO 8601 format strings. -These have the format like "2020-01-15T16:12:21-08:00". +** 'read-number' now has its own history variable. +Additionally, the function now accepts a HIST argument which can be +used to specify a custom history variable. + ++++ +** '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. --- -** The new function 'decoded-time-period' has been added. -It interprets a decoded time structure as a period and returns the -equivalent period in seconds. +** 'count-windows' now takes an optional parameter ALL-FRAMES. +The semantics are as with 'walk-windows'. +++ -** The new function 'dom-remove-attribute' has been added. +** 'truncate-string-ellipsis' now uses '…' by default. +Modes that use 'truncate-string-to-width' with non-nil, non-string +argument ELLIPSIS, will now indicate truncation using '…' when +the selected frame can display it, and using "..." otherwise. +++ -** The new function 'dom-print' has been added. +** 'string-width' now accepts two optional arguments FROM and TO. +This allows calculating the width of a substring without consing a +new string. + ++++ +** 'directory-files' now takes an additional COUNT parameter. +The parameter makes 'directory-files' return COUNT first file names +from a directory. If MATCH is also given, the function will return +first COUNT file names that match the expression. The same COUNT +parameter has been added to 'directory-files-and-attributes'. + ++++ +** 'count-lines' now takes an optional parameter to +ignore invisible lines. + +--- +** 'count-words' now crosses field boundaries. +Originally, 'count-words' would stop counting at the first field +boundary it encountered; now it keeps counting all the way to the +region's (or buffer's) end. + ++++ +** 'file-modes', 'set-file-modes', and 'set-file-times' now have an +optional argument specifying whether to follow symbolic links. + ++++ +** 'format-seconds' can now be used for sub-second times. +The new optional "," parameter has been added, and +'(format-seconds "%mm %,1ss" 66.4)' will now result in "1m 6.4s". + ++++ +** 'parse-time-string' can now parse ISO 8601 format strings. +These have the format like "2020-01-15T16:12:21-08:00". --- ** 'make-network-process', 'make-serial-process' ':coding' behavior change. @@ -3798,17 +3827,8 @@ server based on that greeting. +++ ** 'open-gnutls-stream' now also accepts a ':coding' argument. -+++ -** New user option 'process-file-return-signal-string'. -It controls, whether 'process-file' returns a string when a remote -process is interrupted by a signal. - -+++ -** The behavior of 'format-spec' is now closer to that of 'format'. -In order for the two functions to behave more consistently, -'format-spec' now pads and truncates based on string width rather than -length, and also supports format specifications that include a -truncating precision field, such as "%.2a". +--- +** 'process-attributes' now works under OpenBSD, too. +++ ** 'format-spec' now takes an optional SPLIT parameter. @@ -3816,96 +3836,84 @@ If non-nil, 'format-spec' will split the resulting string into a list of strings, based on where the format specs (and expansions) were. --- -** New function 'color-values-from-color-spec'. -This can be used to parse RGB color specs in several formats and -convert them to a list '(R G B)' of primary color values. +** 'unload-feature' now also tries to undo additions to buffer-local hooks. --- -** User option 'uniquify-buffer-name-style' can now be a function. -This user option can be one of the predefined styles or a function to -personalize the uniquified buffer name. +** '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. -+++ -** New variable 'tty-menu-calls-mouse-position-function'. -This controls whether 'mouse-position-function' is called by functions -that retrieve the mouse position when that happens during TTY menu -handling. Lisp programs that set 'mouse-position-function' should -also set this variable non-nil if they are compatible with the tty -menu handling. +--- +** 'start-process-shell-command' and 'start-file-process-shell-command' +do not support the old calling conventions any longer. +++ -** 'inhibit-nul-byte-detection' is renamed to 'inhibit-null-byte-detection'. - -** Byte compiler +** 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 byte-compiler check for missing dynamic variable declarations. -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". +--- +** Functions operating on local file names now check that the file names +don't contain any NUL bytes. This avoids subtle bugs caused by +xsilently using only the part of the file name until the first NUL byte. +++ -*** 'byte-recompile-directory' can now compile symlinked ".el" files. -This is achieved by giving a non-nil FOLLOW-SYMLINKS parameter. +** New user option 'process-file-return-signal-string'. +It controls, whether 'process-file' returns a string when a remote +process is interrupted by a signal. ---- -*** The byte-compiler now warns about too wide documentation strings. -By default, it will warn if a documentation string is wider than the -largest of 'byte-compile-docstring-max-column' or 'fill-column' -characters. +** EIEIO Changes +++ -*** 'byte-compile-file' optional argument LOAD is now obsolete. -To load the file after byte-compiling, add a call to 'load' from Lisp -or use 'M-x emacs-lisp-byte-compile-and-load' interactively. +*** The macro 'oref-default' can now be used with 'setf'. +It is now defined as a generalized variable that can be used with +'setf' to modify the value stored in a given class slot. --- -** 'unload-feature' now also tries to undo additions to buffer-local hooks. +*** '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. ---- -** Some functions are no longer considered safe by 'unsafep': -'replace-regexp-in-string', 'catch', 'throw', 'error', 'signal' -and 'play-sound-file'. +** D-Bus +++ -** New variable 'print-integers-as-characters' modifies integer printing. -If this variable is non-nil, character syntax is used for printing -numbers when this makes sense, such as '?A' for 65. +*** Property values can be typed explicitly. +'dbus-register-property' and 'dbus-set-property' accept now optional +type symbols. Both functions propagate D-Bus errors. +++ -** New error 'remote-file-error', a subcategory of 'file-error'. -It is signaled if a remote file operation fails due to internal -reasons, and could block Emacs. It does not replace 'file-error' -signals for the usual cases. Timers, process filters and process -functions, which run remote file operations, shall protect themselves -against this error. +*** Registered properties can have the new access type ':write'. -If such an error occurs, please report this as bug via 'M-x report-emacs-bug'. -Until it is solved you could ignore such errors by performing ++++ +*** In case of problems, handlers can emit proper D-Bus error messages now. - (setq debug-ignored-errors (cons 'remote-file-error debug-ignored-errors)) ++++ +*** D-Bus errors, which have been converted from incoming D-Bus error +messages, contain the error name of that message now. +++ -** The error 'ftp-error' belongs also to category 'remote-file-error'. +*** D-Bus messages can be monitored with the new command 'dbus-monitor'. +++ -** Buffers can now be created with certain hooks disabled. -The functions 'get-buffer-create' and 'generate-new-buffer' accept a -new optional argument INHIBIT-BUFFER-HOOKS. If non-nil, the new -buffer does not run the hooks 'kill-buffer-hook', -'kill-buffer-query-functions', and 'buffer-list-update-hook'. This -avoids slowing down internal or temporary buffers that are never -presented to users or passed on to other applications. +*** 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 +'dbus-event-*' accessor functions. --- -** 'start-process-shell-command' and 'start-file-process-shell-command' -do not support the old calling conventions any longer. +** 'text-scale-mode' can now adjust font size of the header line. +When the new buffer local variable 'text-scale-remap-header-line' +is non-nil, 'text-scale-adjust' will also scale the text in the header +line when displaying that buffer. + +This is useful for major modes that arrange their display in a tabular +form below the header line. It is enabled by default in +'tabulated-list-mode' and its derived modes. --- -** Functions operating on local file names now check that the file names -don't contain any NUL bytes. This avoids subtle bugs caused by -silently using only the part of the file name until the first NUL byte. +** 'ascii' is now a coding system alias for 'us-ascii'. ** New coding-systems for EBCDIC variants. New coding-systems 'ibm256', 'ibm273', 'ibm274', 'ibm277', 'ibm278', @@ -3916,47 +3924,46 @@ 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. ---- -** New function 'get-locale-names'. -This utility function returns a list of locale names on the current -system. ++++ +** 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. ---- -** '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. + +* Changes in Emacs 28.1 on Non-Free Operating Systems +++ -** '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. +** On MS-Windows, Emacs can now use the native image API to display images. +Emacs can now use the MS-Windows GDI+ library to load and display +images in JPEG, PNG, GIF and TIFF formats. This support is enabled +unless Emacs was configured '--without-native-image-api'. + +This feature is experimental, and needs to be turned on to be used. +To turn this on, set the variable 'w32-use-native-image-API' to a +non-nil value. Please report any bugs you find while using the native +image API via 'M-x report-emacs-bug'. +++ -** 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. +** On MS-Windows, Emacs can now toggle the IME. +A new function 'w32-set-ime-open-status' can now be used to disable +and enable the MS-Windows native Input Method Editor (IME) at run +time. A companion function 'w32-get-ime-open-status' returns the +current IME activation status. + +-- +** On macOS, 's-<left>' and 's-<right>' are now bound to +'move-beginning-of-line' and 'move-end-of-line' respectively. The commands +to select previous/next frame are still bound to 's-~' and 's-`'. +++ -** New user option 'kill-buffer-delete-auto-save-files'. -If non-nil, killing a buffer that has an auto-save file will prompt -the user for whether that file should be deleted. (Note that -'delete-auto-save-files', if non-nil, was previously documented to -result in deletion of auto-save files when killing a buffer without -unsaved changes, but this has apparently not worked for several -decades, so the documented semantics of this variable has been changed -to match the behaviour.) +** On macOS, Emacs can now load dynamic modules with a ".dylib" suffix. +'module-file-suffix' now has the value ".dylib" on macOS, but the +".so" suffix is supported as well. --- -** New variable 'inhibit-mouse-event-check'. -If bound to non-nil, a command with '(interactive "e")' doesn't signal -an error when invoked by input event that is not a mouse click (e.g., -a key sequence). - - -* Changes in Emacs 28.1 on Non-Free Operating Systems +** On macOS, the user option 'make-pointer-invisible' is now honored. --- ** On macOS, Xwidget is now supported. @@ -3979,35 +3986,9 @@ If non-nil, enable plugins in xwidget. (This is only available on macOS.) +++ -** On macOS, Emacs can now load dynamic modules with a ".dylib" suffix. -'module-file-suffix' now has the value ".dylib" on macOS, but the -".so" suffix is supported as well. - -+++ -** On MS-Windows, Emacs can now toggle the IME. -A new function 'w32-set-ime-open-status' can now be used to disable -and enable the MS-Windows native Input Method Editor (IME) at run -time. A companion function 'w32-get-ime-open-status' returns the -current IME activation status. - -+++ -** On MS-Windows, Emacs can now use the native image API to display images. -Emacs can now use the MS-Windows GDI+ library to load and display -images in JPEG, PNG, GIF and TIFF formats. This support is enabled -unless Emacs was configured '--without-native-image-api'. - -This feature is experimental, and needs to be turned on to be used. -To turn this on, set the variable 'w32-use-native-image-API' to a -non-nil value. Please report any bugs you find while using the native -image API via 'M-x report-emacs-bug'. - ---- -** The user option 'make-pointer-invisible' is now honored on macOS. - --- -** On macOS, 's-<left>' and 's-<right>' are now bound to -'move-beginning-of-line' and 'move-end-of-line' respectively. The commands -to select previous/next frame are still bound to 's-~' and 's-`'. +** New macOS Contacts back-end for EUDC. +This backend works on newer versions of macOS and is generally +preferred over the eudcb-mab.el backend. ---------------------------------------------------------------------- |