GNU-devel ELPA - corfu


COmpletion in Region FUnction
corfu-, 2023-Sep-22, 210 KiB
Daniel Mendler <>
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To install this package from Emacs, use package-install or list-packages.

Full description


Corfu enhances in-buffer completion with a small completion popup. The current candidates are shown in a popup below or above the point. The candidates can be selected by moving up and down. Corfu is the minimalistic in-buffer completion counterpart of the Vertico minibuffer UI.

Corfu is a small package, which relies on the Emacs completion facilities and concentrates on providing a polished completion UI. In-buffer completion UIs in Emacs can hook into completion-in-region, which implements the interaction with the user. Completions at point are either provided by commands like dabbrev-completion or by pluggable backends (completion-at-point-functions, Capfs) and are then passed to completion-in-region. Many programming, text and shell major modes implement a Capf. Corfu does not include its own completion backends. The Emacs built-in Capfs and the Capfs provided by third-party programming language packages are often sufficient. Additional Capfs and completion utilities are provided by the Cape package.

NOTE: Corfu uses child frames to show the popup and falls back to the default setting of the completion-in-region-function on non-graphical displays. If you want to use Corfu in the terminal, install the package corfu-terminal, which provides an alternative overlay-based display.

1. Features

  • Timer-based auto-completions (off by default, set corfu-auto).
  • Popup display with scrollbar indicator and arrow key navigation.
  • The popup can be summoned explicitly by pressing TAB at any time.
  • The current candidate is inserted with TAB and selected with RET.
  • Candidates sorting by prefix, string length and alphabetically.
  • The selected candidate is previewed (configurable via corfu-preview-current).
  • The selected candidate automatically committed on further input by default. (configurable via corfu-preview-current).
  • The Orderless completion style is supported. The filter string can contain arbitrary characters, after inserting a space via M-SPC (configurable via corfu-quit-at-boundary and corfu-separator).
  • Deferred completion style highlighting for performance.
  • Support for candidate annotations (annotation-function, affixation-function).
  • Deprecated candidates are crossed out in the display.
  • Icons can be provided by an external package via margin formatter functions.
  • Rich set of extensions: Quick keys, Index keys, Sorting by history, Candidate documentation in echo area, popup or separate buffer

2. Installation and Configuration

Corfu is available from GNU ELPA, such that it can be installed directly via package-install. After installation, the global minor mode can be enabled with M-x global-corfu-mode. In order to configure Corfu and other packages in your init.el, you may want to use use-package.

Corfu is highly flexible and customizable via corfu-* customization variables, such that you can adapt it precisely to your requirements. However in order to quickly try out the Corfu completion package, it should be sufficient to activate global-corfu-mode. You can experiment with manual completion for example in an Elisp buffer or in an Eshell or Shell buffer. For auto completion, set corfu-auto to t before turning on global-corfu-mode.

Here is an example configuration:

(use-package corfu
  ;; Optional customizations
  ;; :custom
  ;; (corfu-cycle t)                ;; Enable cycling for `corfu-next/previous'
  ;; (corfu-auto t)                 ;; Enable auto completion
  ;; (corfu-separator ?\s)          ;; Orderless field separator
  ;; (corfu-quit-at-boundary nil)   ;; Never quit at completion boundary
  ;; (corfu-quit-no-match nil)      ;; Never quit, even if there is no match
  ;; (corfu-preview-current nil)    ;; Disable current candidate preview
  ;; (corfu-preselect 'prompt)      ;; Preselect the prompt
  ;; (corfu-on-exact-match nil)     ;; Configure handling of exact matches
  ;; (corfu-scroll-margin 5)        ;; Use scroll margin

  ;; Enable Corfu only for certain modes.
  ;; :hook ((prog-mode . corfu-mode)
  ;;        (shell-mode . corfu-mode)
  ;;        (eshell-mode . corfu-mode))

  ;; Recommended: Enable Corfu globally.
  ;; This is recommended since Dabbrev can be used globally (M-/).
  ;; See also `global-corfu-modes'.

;; A few more useful configurations...
(use-package emacs
  ;; TAB cycle if there are only few candidates
  (setq completion-cycle-threshold 3)

  ;; Emacs 28: Hide commands in M-x which do not apply to the current mode.
  ;; Corfu commands are hidden, since they are not supposed to be used via M-x.
  ;; (setq read-extended-command-predicate
  ;;       #'command-completion-default-include-p)

  ;; Enable indentation+completion using the TAB key.
  ;; `completion-at-point' is often bound to M-TAB.
  (setq tab-always-indent 'complete))

Dabbrev completion is based on completion-in-region and can be used with Corfu. You may want to swap the dabbrev-completion with the dabbrev-expand key for easier access, if you prefer completion. Also take a look at the cape-dabbrev completion at point function provided by my Cape package.

;; Use Dabbrev with Corfu!
(use-package dabbrev
  ;; Swap M-/ and C-M-/
  :bind (("M-/" . dabbrev-completion)
	 ("C-M-/" . dabbrev-expand))
  ;; Other useful Dabbrev configurations.
  (dabbrev-ignored-buffer-regexps '("\\.\\(?:pdf\\|jpe?g\\|png\\)\\'")))

If you start to configure the package more deeply, I recommend to give the Orderless completion style a try for filtering. Orderless completion is different from the familiar prefix TAB completion. Corfu can be used with the default completion styles. The use of Orderless is not a necessity.

;; Optionally use the `orderless' completion style.
(use-package orderless
  ;; Configure a custom style dispatcher (see the Consult wiki)
  ;; (setq orderless-style-dispatchers '(+orderless-dispatch)
  ;;       orderless-component-separator #'orderless-escapable-split-on-space)
  (setq completion-styles '(orderless basic)
	completion-category-defaults nil
	completion-category-overrides '((file (styles partial-completion)))))

The basic completion style is specified as fallback in addition to orderless in order to ensure that completion commands which rely on dynamic completion tables, e.g., completion-table-dynamic or completion-table-in-turn, work correctly. See +orderless-dispatch in the Consult wiki for an advanced Orderless style dispatcher. Additionally enable partial-completion for file path expansion. partial-completion is important for file wildcard support. Multiple files can be opened at once with find-file if you enter a wildcard. You may also give the initials completion style a try.

See also the Corfu Wiki and the Cape manual for additional Capf configuration tips. The language server protocol (LSP) configurations are documented in the wiki. For more general documentation read the chapter about completion in the Emacs manual. If you want to create your own Capfs, you can find documentation about completion in the Elisp manual.

2.1. Auto completion

Auto completion is disabled by default, but can be enabled by setting corfu-auto to t. Furthermore you may want to configure Corfu to quit completion eagerly, such that the completion popup stays out of your way when it appeared unexpectedly.

;; Enable auto completion and configure quitting
(setq corfu-auto t
      corfu-quit-no-match 'separator) ;; or t

I suggest to experiment with the various settings and key bindings to find a configuration which works for you. There is no one perfect configuration which fits all. Some people like auto completion, some like manual completion, some want to cycle with TAB and some with the arrow keys.

In case you like auto completion settings, where the completion popup appears immediately, better use a cheap completion style like basic, which performs prefix filtering. In this case Corfu completion should still be fast in buffers with efficient completion backends. You can try the following settings in an Elisp buffer or the Emacs scratch buffer. Note that such settings can slow down Emacs due to the high load on the Lisp runtime and garbage collector.

(setq-local corfu-auto        t
	    corfu-auto-delay  0 ;; TOO SMALL - NOT RECOMMENDED
	    corfu-auto-prefix 1 ;; TOO SMALL - NOT RECOMMENDED
	    completion-styles '(basic))

If you want to combine fast prefix filtering and Orderless filtering you can still do that by defining a custom Orderless completion style via orderless-define-completion-style. We use a custom style dispatcher, which enables efficient prefix filtering for input shorter than 4 characters. Note that such a setup is advanced. Please refer to the Orderless documentation and source code for further details.

(defun orderless-fast-dispatch (word index total)
  (and (= index 0) (= total 1) (length< word 4)
       `(orderless-regexp . ,(concat "^" (regexp-quote word)))))

(orderless-define-completion-style orderless-fast
  (orderless-style-dispatchers '(orderless-fast-dispatch))
  (orderless-matching-styles '(orderless-literal orderless-regexp)))

(setq-local corfu-auto        t
	    corfu-auto-delay  0 ;; TOO SMALL - NOT RECOMMENDED
	    corfu-auto-prefix 1 ;; TOO SMALL - NOT RECOMMENDED
	    completion-styles '(orderless-fast basic))

2.2. Completing in the minibuffer

Corfu can be used for completion in the minibuffer, since it relies on child frames to display the candidates. By default, global-corfu-mode does not activate corfu-mode in the minibuffer, to avoid interference with specialised minibuffer completion UIs like Vertico or Mct. However you may still want to enable Corfu completion for commands like M-: (eval-expression) or M-! (shell-command), which read from the minibuffer. Activate corfu-mode only if completion-at-point is bound in the minibuffer-local keymap to achieve this effect.

(defun corfu-enable-in-minibuffer ()
  "Enable Corfu in the minibuffer if `completion-at-point' is bound."
  (when (where-is-internal #'completion-at-point (list (current-local-map)))
    ;; (setq-local corfu-auto nil) ;; Enable/disable auto completion
    (setq-local corfu-echo-delay nil ;; Disable automatic echo and popup
		corfu-popupinfo-delay nil)
    (corfu-mode 1)))
(add-hook 'minibuffer-setup-hook #'corfu-enable-in-minibuffer)

You can also enable Corfu more generally for every minibuffer, as long as no completion UI is active. In the following example we check for Mct and Vertico. Furthermore we ensure that Corfu is not enabled if a password is read from the minibuffer.

(defun corfu-enable-always-in-minibuffer ()
  "Enable Corfu in the minibuffer if Vertico/Mct are not active."
  (unless (or (bound-and-true-p mct--active)
	      (bound-and-true-p vertico--input)
	      (eq (current-local-map) read-passwd-map))
    ;; (setq-local corfu-auto nil) ;; Enable/disable auto completion
    (setq-local corfu-echo-delay nil ;; Disable automatic echo and popup
		corfu-popupinfo-delay nil)
    (corfu-mode 1)))
(add-hook 'minibuffer-setup-hook #'corfu-enable-always-in-minibuffer 1)

2.3. Completing in the Eshell or Shell

When completing in the Eshell I recommend conservative local settings without auto completion, such that the completion behavior is similar to widely used shells like Bash, Zsh or Fish.

(add-hook 'eshell-mode-hook
	  (lambda ()
	    (setq-local corfu-auto nil)

When pressing RET while the Corfu popup is visible, the corfu-insert command will be invoked. This command does inserts the currently selected candidate, but it does not send the prompt input to Eshell or the Comint process. Therefore you often have to press RET twice which feels like an unnecessary double confirmation. Fortunately it is easy to improve this! In my configuration I define the advice corfu-send-shell which sends the candidate after insertion.

(defun corfu-send-shell (&rest _)
  "Send completion candidate when inside comint/eshell."
   ((and (derived-mode-p 'eshell-mode) (fboundp 'eshell-send-input))
   ((and (derived-mode-p 'comint-mode)  (fboundp 'comint-send-input))

(advice-add #'corfu-insert :after #'corfu-send-shell)

Shell completion uses the flexible Pcomplete mechanism internally, which allows you to program the completions per shell command. If you want to know more, look into this blog post, which shows how to configure Pcomplete for git commands.

I recommend the pcmpl-args package which extends Pcomplete with completion support and helpful annotation support for more commands. Similar to the Fish shell, pcmpl-args uses man page parsing and --help output parsing to dynamically generate completions. This package brings Eshell completion to another level! Since Emacs 29, Pcomplete offers the pcomplete-from-help function which parses the --help output of a command and produces completions. This Emacs 29 functionality is not completely equivalent. For example it does not display annotations in Eshell, but this may get fixed in Emacs 30.

Pcomplete has a few bugs on Emacs 28 and older. We can work around the issues with the Cape library (Completion at point extensions). Cape provides wrappers which sanitize the Pcomplete function. If you use Emacs 28 or older installing these advices is recommended such that Pcomplete works properly. On Emacs 29 the advices should not be necessary anymore, since most of the relevant bugs have been fixed. I therefore recommend to remove the advices on Emacs 29 and eventually report any remaining Pcomplete issues upstream, such that they can be fixed.

;; The advices are only needed on Emacs 28 and older.
(when (< emacs-major-version 29)
  ;; Silence the pcomplete capf, no errors or messages!
  (advice-add 'pcomplete-completions-at-point :around #'cape-wrap-silent)

  ;; Ensure that pcomplete does not write to the buffer
  ;; and behaves as a pure `completion-at-point-function'.
  (advice-add 'pcomplete-completions-at-point :around #'cape-wrap-purify))

2.4. Orderless completion

Orderless is an advanced completion style that supports multi-component search filters separated by a configurable character (space, by default). Normally, entering characters like space which lie outside the completion region boundaries (words, typically) causes Corfu to quit. This behavior is helpful with auto-completion, which may pop-up when not desired, e.g. on entering a new variable name. Just keep typing and Corfu will get out of the way.

But orderless search terms can contain arbitrary characters; they are also interpreted as regular expressions. To use orderless, set corfu-separator (a space, by default) to the primary character of your orderless component separator.

Then, when a new orderless component is desired, use M-SPC (corfu-insert-separator) to enter the first component separator in the input, and arbitrary orderless search terms and new separators can be entered thereafter.

To treat the entire input as Orderless input, you can set the customization option corfu-quit-at-boundary to nil. This disables the predicate which checks if the current completion boundary has been left. In contrast, if you always want to quit at the boundary, set corfu-quit-at-boundary to t. By default corfu-quit-at-boundary is set to separator which quits at completion boundaries as long as no separator has been inserted with corfu-insert-separator.

Finally, there exists the user option corfu-quit-no-match which is set to separator by default. With this setting Corfu stays alive as soon as you start advanced filtering with a corfu-separator even if there are no matches, for example due to a typo. As long as no separator character has been inserted with corfu-insert-separator, Corfu will still quit if there are no matches. This ensures that the Corfu popup goes away quickly if completion is not possible.

In the following we show two configurations, one which works best with auto completion and one which may work better with manual completion if you prefer to always use SPC to separate the Orderless components.

;; Auto completion example
(use-package corfu
  (corfu-auto t)          ;; Enable auto completion
  ;; (corfu-separator ?_) ;; Set to orderless separator, if not using space
  ;; Another key binding can be used, such as S-SPC.
  ;; (:map corfu-map ("M-SPC" . corfu-insert-separator))

;; Manual completion example
(use-package corfu
  ;; (corfu-separator ?_) ;; Set to orderless separator, if not using space
  ;; Configure SPC for separator insertion
  (:map corfu-map ("SPC" . corfu-insert-separator))

2.5. TAB-only completion

By default, Corfu steals both the RET and TAB keys, when the Corfu popup is open. This can feel intrusive, in particular in combination with auto completion. RET may accidentally commit an automatically selected candidate, while you actually wanted to start a new line. As an alternative we can unbind the RET key completely from corfu-map or reserve the RET key only in shell modes.

;; TAB-only configuration
(use-package corfu
  (corfu-auto t)               ;; Enable auto completion
  (corfu-preselect 'directory) ;; Select the first candidate, except for directories

  ;; Free the RET key for less intrusive behavior.
  (:map corfu-map
	;; Option 1: Unbind RET completely
	;;; ("RET" . nil)
	;; Option 2: Use RET only in shell modes
	("RET" . (menu-item "" nil :filter corfu-insert-shell-filter)))


(defun corfu-insert-shell-filter (&optional _)
  "Insert completion candidate and send when inside comint/eshell."
  (when (derived-mode-p 'eshell-mode 'comint-mode)
    (lambda ()
      ;; `corfu-send-shell' was defined above

2.6. TAB-and-Go completion

You may be interested in configuring Corfu in TAB-and-Go style. Pressing TAB moves to the next candidate and further input will then commit the selection. Note that further input will not expand snippets or templates, which may not be desired but which leads overall to a more predictable behavior. In order to force snippet expansion, confirm a candidate explicitly with RET.

(use-package corfu
  ;; TAB-and-Go customizations
  (corfu-cycle t)           ;; Enable cycling for `corfu-next/previous'
  (corfu-preselect 'prompt) ;; Always preselect the prompt

  ;; Use TAB for cycling, default is `corfu-complete'.
  (:map corfu-map
	("TAB" . corfu-next)
	([tab] . corfu-next)
	("S-TAB" . corfu-previous)
	([backtab] . corfu-previous))


2.7. Transfer completion to the minibuffer

Sometimes it is useful to transfer the Corfu completion session to the minibuffer, since the minibuffer offers richer interaction features. In particular, Embark is available in the minibuffer, such that you can act on the candidates or export/collect the candidates to a separate buffer. We could add Corfu support to Embark in the future, such that export/collect is possible directly from Corfu. But in my opinion having the ability to transfer the Corfu completion to the minibuffer is an even better feature, since further completion can be performed there.

The command corfu-move-to-minibuffer is defined here in terms of consult-completion-in-region, which uses the minibuffer completion UI via completing-read.

(defun corfu-move-to-minibuffer ()
  (when completion-in-region--data
    (let ((completion-extra-properties corfu--extra)
	  completion-cycle-threshold completion-cycling)
      (apply #'consult-completion-in-region completion-in-region--data))))
(keymap-set corfu-map "M-m" #'corfu-move-to-minibuffer)
(add-to-list 'corfu-continue-commands #'corfu-move-to-minibuffer)

3. Key bindings

Corfu uses a transient keymap corfu-map which is active while the popup is shown. The keymap defines the following remappings and bindings:

  • move-beginning-of-line -> corfu-prompt-beginning
  • move-end-of-line -> corfu-prompt-end
  • beginning-of-buffer -> corfu-first
  • end-of-buffer -> corfu-last
  • scroll-down-command -> corfu-scroll-down
  • scroll-up-command -> corfu-scroll-up
  • next-line, down, M-n -> corfu-next
  • previous-line, up, M-p -> corfu-previous
  • completion-at-point, TAB -> corfu-complete
  • RET -> corfu-insert
  • M-g -> corfu-info-location
  • M-h -> corfu-info-documentation
  • M-SPC -> corfu-insert-separator
  • C-g -> corfu-quit
  • keyboard-escape-quit -> corfu-reset

4. Extensions

We maintain small extension packages to Corfu in this repository in the subdirectory extensions/. The extensions are installed together with Corfu if you pull the package from ELPA. The extensions are inactive by default and can be enabled manually if desired. Furthermore it is possible to install all of the files separately, both corfu.el and the corfu-*.el extensions. Currently the following extensions come with the Corfu ELPA package:

  • corfu-echo: corfu-echo-mode displays a brief candidate documentation in the echo area.
  • corfu-history: corfu-history-mode remembers selected candidates and sorts the candidates by their history position.
  • corfu-indexed: corfu-indexed-mode allows you to select indexed candidates with prefix arguments.
  • corfu-info: Actions to access the candidate location and documentation.
  • corfu-popupinfo: Display candidate documentation or source in a popup next to the candidate menu.
  • corfu-quick: Commands to select using Avy-style quick keys.

See the Commentary of those files for configuration details.

5. Complementary packages

Corfu works well together with all packages providing code completion via the completion-at-point-functions. Many modes and packages already provide a Capf out of the box. Nevertheless you may want to look into complementary packages to enhance your setup.

  • corfu-terminal: The corfu-terminal package provides an overlay-based display for Corfu, such that you can use Corfu in terminal Emacs.
  • corfu-candidate-overlay: Shows as-you-type auto-suggestion candidate overlay with a visual indication of whether there are many or exactly one candidate available (works only with corfu-auto disabled).
  • Orderless: Corfu supports completion styles, including the advanced orderless completion style, where the filtering expressions are separated by spaces or another character (see corfu-separator).
  • Cape: Provides additional Capf backends and completion-in-region commands. Among others, the package supplies the file completion backend cape-file and the Dabbrev backend cape-dabbrev. Cape provides the cape-company-to-capf adapter to reuse Company backends in Corfu.
  • nerd-icons-corfu, kind-icon: Icons are supported by Corfu via external packages. The nerd-icons-corfu package relies on the Nerd icon font, which is even supported on terminal, while kind-icon uses beautifully styled SVG from monochromatic icon sets.
  • pcmpl-args: Extend the Eshell/Shell Pcomplete mechanism with support for many commands. Similar to the Fish shell, pcmpl-args uses man page parsing to dynamically retrieve the completions and helpful annotations.
  • Tempel: Tiny template/snippet package with templates in Lisp syntax, which can be used in conjunction with Corfu.
  • Vertico: You may also want to look into my Vertico package. Vertico is the minibuffer completion counterpart of Corfu.

6. Alternatives

  • Company: Company is a widely used and mature completion package, which implements a similar UI as Corfu. While Corfu relies exclusively on the standard Emacs completion API (Capfs), Company defines its own API for the backends. Company includes its own completion backends, following its own API, which are incompatible with the Emacs completion infrastructure. Company provides an adapter company-capf to handle Capfs as a Company backend. As a result of this design, Company is a more complex package than Corfu. Company by default uses overlays for the popup in contrast to the child frames used by Corfu. Overall both packages work well, but Company integrates less tightly with Emacs. The completion-styles support is more limited and the completion-at-point command and the completion-in-region function do not invoke Company.
  • consult-completion-in-region: The Consult package provides the function consult-completion-in-region which can be set as completion-in-region-function such that it handles completion-at-point. The function works by transferring the in-buffer completion to the minibuffer. In the minibuffer, the minibuffer completion UI, for example Vertico takes over. If you prefer to perform all your completions in the minibuffer consult-completion-in-region is your best option.

7. Debugging Corfu

When you observe an error in the corfu--post-command post command hook, you should install an advice to enforce debugging. This allows you to obtain a stack trace in order to narrow down the location of the error. The reason is that post command hooks are automatically disabled (and not debugged) by Emacs. Otherwise Emacs would become unusable, given that the hooks are executed after every command.

(setq debug-on-error t)

(defun force-debug (func &rest args)
  (condition-case e
      (apply func args)
    ((debug error) (signal (car e) (cdr e)))))

(advice-add #'corfu--post-command :around #'force-debug)

When Capfs do not yield the expected result you can use cape-capf-debug to add debug messages to a Capf. The Capf will then produce a completion log in the messages buffer.

(setq completion-at-point-functions (list (cape-capf-debug #'cape-dict)))

8. Contributions

Since this package is part of GNU ELPA contributions require a copyright assignment to the FSF.

Old versions

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1. Version 0.38 (2023-08-14)

  • corfu-quick: Bugfix.
  • corfu-mode-map: Add mode map.
  • Replace corfu-excluded-modes with global-corfu-modes, the Emacs 28 convention for globalized minor modes.

2. Version 0.37 (2023-07-02)

  • Bugfixes.
  • Improve child frame display code, corfu--popup-show takes a posn argument.
  • Ensure that the popup font matches the font of the parent frame.
  • Close popup when window selection changes.
  • Remove corfu-history-length. Instead set the history-length property of corfu-history variable.
  • corfu-info-documentation, corfu-info-location: Make buffer and window persistent if called with prefix argument.

3. Version 0.36 (2023-03-27)

  • Drop obsolete corfu-preselect-first.
  • corfu-popupinfo-delay and corfu-echo-delay: Remove support for value t. Instant updates are not recommended. It is still possible to use a small value for the delay.
  • Rename corfu-excluded-modes to corfu-exclude-modes (Naming convention).
  • Remove call to undo-boundary, which caused issues with auto completion.

4. Version 0.35 (2023-02-17)

  • corfu-popupinfo: Take more text into account when computing popup width.
  • corfu-popupinfo: Change keybindings, remap corfu-info-documentation/location.
  • corfu-popupinfo: Add commands corfu-popupinfo-beginning/end.
  • corfu-popupinfo: Improve popup placement.
  • Add corfu-prompt-beginning and corfu-prompt-end commands.
  • Add corfu-preselect option, deprecate corfu-preselect-first.
  • Use cl-defgeneric internally as mechanism to allow extensions to override functionality, e.g., the candidate formatting and display.

5. Version 0.34 (2022-12-03)

  • Bugfixes
  • Popup frame code updated for Emacs 29. Please report any issues.
  • corfu-popupinfo-direction: Variable must be a list of directions.
  • Support height adjustments of corfu-default face

6. Version 0.33 (2022-11-21)

  • corfu-popupinfo: Bugfixes

7. Version 0.31 (2022-11-20)

  • corfu-echo, corfu-quick: Bugfixes for interaction issue.

8. Version 0.30 (2022-11-19)

  • corfu-popupinfo: Bugfixes and improvements.

9. Version 0.29 (2022-11-19)

  • BREAKING: Extract the corfu-echo extension from corfu.el. In order to see echo messages, enable corfu-echo-mode. You probably want to enable either corfu-echo-mode or corfu-popupinfo-mode.
  • BREAKING: Rename corfu-echo-documentation to corfu-echo-delay.
  • Add corfu-popupinfo extension to display candidate documentation and location in a small child frame next to the candidate menu. This extension has been contributed by Yuwei Tian who assigned copyright to the FSF. The extension supersedes Yuwei's corfu-doc package.

10. Version 0.28 (2022-10-16)

  • Start of changelog.