460 lines
17 KiB
EmacsLisp
460 lines
17 KiB
EmacsLisp
;;; bind-key.el --- A simple way to manage personal keybindings
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;; Copyright (c) 2012-2017 John Wiegley
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;; Author: John Wiegley <johnw@newartisans.com>
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;; Maintainer: John Wiegley <johnw@newartisans.com>
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;; Created: 16 Jun 2012
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;; Modified: 29 Nov 2017
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;; Version: 2.4
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;; Package-Version: 20200805.1727
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;; Package-Commit: 4fb1f9a68f1e7e7d614652afc017a6652fd029f1
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;; Keywords: keys keybinding config dotemacs
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;; URL: https://github.com/jwiegley/use-package
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the gnu general public license as
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;; published by the free software foundation; either version 3, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; without any warranty; without even the implied warranty of
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;; merchantability or fitness for a particular purpose. see the gnu
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;; general public license for more details.
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;; You should have received a copy of the gnu general public license
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;; along with gnu emacs; see the file copying. if not, write to the
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;; free software foundation, inc., 59 temple place - suite 330,
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;; boston, ma 02111-1307, usa.
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;;; Commentary:
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;; If you have lots of keybindings set in your .emacs file, it can be hard to
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;; know which ones you haven't set yet, and which may now be overriding some
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;; new default in a new emacs version. This module aims to solve that
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;; problem.
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;;
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;; Bind keys as follows in your .emacs:
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;;
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;; (require 'bind-key)
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;;
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;; (bind-key "C-c x" 'my-ctrl-c-x-command)
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;;
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;; If the keybinding argument is a vector, it is passed straight to
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;; `define-key', so remapping a key with `[remap COMMAND]' works as
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;; expected:
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;;
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;; (bind-key [remap original-ctrl-c-x-command] 'my-ctrl-c-x-command)
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;;
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;; If you want the keybinding to override all minor modes that may also bind
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;; the same key, use the `bind-key*' form:
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;;
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;; (bind-key* "<C-return>" 'other-window)
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;;
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;; If you want to rebind a key only in a particular keymap, use:
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;;
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;; (bind-key "C-c x" 'my-ctrl-c-x-command some-other-mode-map)
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;;
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;; To unbind a key within a keymap (for example, to stop your favorite major
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;; mode from changing a binding that you don't want to override everywhere),
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;; use `unbind-key':
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;;
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;; (unbind-key "C-c x" some-other-mode-map)
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;;
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;; To bind multiple keys at once, or set up a prefix map, a `bind-keys' macro
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;; is provided. It accepts keyword arguments, please see its documentation
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;; for a detailed description.
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;;
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;; To add keys into a specific map, use :map argument
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;;
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;; (bind-keys :map dired-mode-map
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;; ("o" . dired-omit-mode)
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;; ("a" . some-custom-dired-function))
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;;
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;; To set up a prefix map, use `:prefix-map' and `:prefix' arguments (both are
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;; required)
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;;
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;; (bind-keys :prefix-map my-customize-prefix-map
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;; :prefix "C-c c"
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;; ("f" . customize-face)
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;; ("v" . customize-variable))
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;;
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;; You can combine all the keywords together. Additionally,
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;; `:prefix-docstring' can be specified to set documentation of created
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;; `:prefix-map' variable.
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;;
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;; To bind multiple keys in a `bind-key*' way (to be sure that your bindings
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;; will not be overridden by other modes), you may use `bind-keys*' macro:
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;;
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;; (bind-keys*
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;; ("C-o" . other-window)
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;; ("C-M-n" . forward-page)
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;; ("C-M-p" . backward-page))
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;;
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;; After Emacs loads, you can see a summary of all your personal keybindings
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;; currently in effect with this command:
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;;
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;; M-x describe-personal-keybindings
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;;
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;; This display will tell you if you've overridden a default keybinding, and
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;; what the default was. Also, it will tell you if the key was rebound after
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;; your binding it with `bind-key', and what it was rebound it to.
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;;; Code:
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(require 'cl-lib)
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(require 'easy-mmode)
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(defgroup bind-key nil
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"A simple way to manage personal keybindings"
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:group 'emacs)
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(defcustom bind-key-column-widths '(18 . 40)
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"Width of columns in `describe-personal-keybindings'."
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:type '(cons integer integer)
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:group 'bind-key)
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(defcustom bind-key-segregation-regexp
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"\\`\\(\\(C-[chx] \\|M-[gso] \\)\\([CM]-\\)?\\|.+-\\)"
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"Regular expression used to divide key sets in the output from
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\\[describe-personal-keybindings]."
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:type 'regexp
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:group 'bind-key)
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(defcustom bind-key-describe-special-forms nil
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"If non-nil, extract docstrings from lambdas, closures and keymaps if possible."
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:type 'boolean
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:group 'bind-key)
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;; Create override-global-mode to force key remappings
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(defvar override-global-map (make-keymap)
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"override-global-mode keymap")
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(define-minor-mode override-global-mode
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"A minor mode so that keymap settings override other modes."
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t "")
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;; the keymaps in `emulation-mode-map-alists' take precedence over
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;; `minor-mode-map-alist'
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(add-to-list 'emulation-mode-map-alists
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`((override-global-mode . ,override-global-map)))
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(defvar personal-keybindings nil
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"List of bindings performed by `bind-key'.
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Elements have the form ((KEY . [MAP]) CMD ORIGINAL-CMD)")
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;;;###autoload
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(defmacro bind-key (key-name command &optional keymap predicate)
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"Bind KEY-NAME to COMMAND in KEYMAP (`global-map' if not passed).
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KEY-NAME may be a vector, in which case it is passed straight to
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`define-key'. Or it may be a string to be interpreted as
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spelled-out keystrokes, e.g., \"C-c C-z\". See documentation of
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`edmacro-mode' for details.
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COMMAND must be an interactive function or lambda form.
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KEYMAP, if present, should be a keymap variable or symbol.
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For example:
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(bind-key \"M-h\" #'some-interactive-function my-mode-map)
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(bind-key \"M-h\" #'some-interactive-function 'my-mode-map)
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If PREDICATE is non-nil, it is a form evaluated to determine when
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a key should be bound. It must return non-nil in such cases.
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Emacs can evaluate this form at any time that it does redisplay
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or operates on menu data structures, so you should write it so it
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can safely be called at any time."
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(let ((namevar (make-symbol "name"))
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(keyvar (make-symbol "key"))
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(kdescvar (make-symbol "kdesc"))
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(bindingvar (make-symbol "binding")))
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`(let* ((,namevar ,key-name)
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(,keyvar (if (vectorp ,namevar) ,namevar
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(read-kbd-macro ,namevar)))
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(kmap (if (and ,keymap (symbolp ,keymap)) (symbol-value ,keymap) ,keymap))
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(,kdescvar (cons (if (stringp ,namevar) ,namevar
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(key-description ,namevar))
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(if (symbolp ,keymap) ,keymap (quote ,keymap))))
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(,bindingvar (lookup-key (or kmap global-map) ,keyvar)))
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(let ((entry (assoc ,kdescvar personal-keybindings))
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(details (list ,command
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(unless (numberp ,bindingvar)
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,bindingvar))))
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(if entry
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(setcdr entry details)
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(add-to-list 'personal-keybindings (cons ,kdescvar details))))
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,(if predicate
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`(define-key (or kmap global-map) ,keyvar
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'(menu-item "" nil :filter (lambda (&optional _)
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(when ,predicate
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,command))))
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`(define-key (or kmap global-map) ,keyvar ,command)))))
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;;;###autoload
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(defmacro unbind-key (key-name &optional keymap)
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"Unbind the given KEY-NAME, within the KEYMAP (if specified).
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See `bind-key' for more details."
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`(progn
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(bind-key ,key-name nil ,keymap)
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(setq personal-keybindings
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(cl-delete-if #'(lambda (k)
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,(if keymap
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`(and (consp (car k))
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(string= (caar k) ,key-name)
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(eq (cdar k) ',keymap))
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`(and (stringp (car k))
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(string= (car k) ,key-name))))
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personal-keybindings))))
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;;;###autoload
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(defmacro bind-key* (key-name command &optional predicate)
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"Similar to `bind-key', but overrides any mode-specific bindings."
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`(bind-key ,key-name ,command override-global-map ,predicate))
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(defun bind-keys-form (args keymap)
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"Bind multiple keys at once.
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Accepts keyword arguments:
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:map MAP - a keymap into which the keybindings should be
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added
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:prefix KEY - prefix key for these bindings
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:prefix-map MAP - name of the prefix map that should be created
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for these bindings
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:prefix-docstring STR - docstring for the prefix-map variable
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:menu-name NAME - optional menu string for prefix map
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:filter FORM - optional form to determine when bindings apply
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The rest of the arguments are conses of keybinding string and a
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function symbol (unquoted)."
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(let (map
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doc
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prefix-map
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prefix
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filter
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menu-name
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pkg)
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;; Process any initial keyword arguments
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(let ((cont t))
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(while (and cont args)
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(if (cond ((and (eq :map (car args))
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(not prefix-map))
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(setq map (cadr args)))
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((eq :prefix-docstring (car args))
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(setq doc (cadr args)))
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((and (eq :prefix-map (car args))
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(not (memq map '(global-map
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override-global-map))))
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(setq prefix-map (cadr args)))
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((eq :prefix (car args))
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(setq prefix (cadr args)))
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((eq :filter (car args))
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(setq filter (cadr args)) t)
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((eq :menu-name (car args))
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(setq menu-name (cadr args)))
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((eq :package (car args))
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(setq pkg (cadr args))))
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(setq args (cddr args))
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(setq cont nil))))
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(when (or (and prefix-map (not prefix))
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(and prefix (not prefix-map)))
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(error "Both :prefix-map and :prefix must be supplied"))
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(when (and menu-name (not prefix))
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(error "If :menu-name is supplied, :prefix must be too"))
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(unless map (setq map keymap))
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;; Process key binding arguments
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(let (first next)
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(while args
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(if (keywordp (car args))
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(progn
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(setq next args)
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(setq args nil))
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(if first
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(nconc first (list (car args)))
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(setq first (list (car args))))
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(setq args (cdr args))))
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(cl-flet
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((wrap (map bindings)
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(if (and map pkg (not (memq map '(global-map
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override-global-map))))
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`((if (boundp ',map)
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,(macroexp-progn bindings)
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(eval-after-load
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,(if (symbolp pkg) `',pkg pkg)
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',(macroexp-progn bindings))))
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bindings)))
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(append
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(when prefix-map
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`((defvar ,prefix-map)
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,@(when doc `((put ',prefix-map 'variable-documentation ,doc)))
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,@(if menu-name
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`((define-prefix-command ',prefix-map nil ,menu-name))
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`((define-prefix-command ',prefix-map)))
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,@(if (and map (not (eq map 'global-map)))
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(wrap map `((bind-key ,prefix ',prefix-map ,map ,filter)))
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`((bind-key ,prefix ',prefix-map nil ,filter)))))
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(wrap map
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(cl-mapcan
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(lambda (form)
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(let ((fun (and (cdr form) (list 'function (cdr form)))))
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(if prefix-map
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`((bind-key ,(car form) ,fun ,prefix-map ,filter))
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(if (and map (not (eq map 'global-map)))
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`((bind-key ,(car form) ,fun ,map ,filter))
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`((bind-key ,(car form) ,fun nil ,filter))))))
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first))
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(when next
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(bind-keys-form (if pkg
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(cons :package (cons pkg next))
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next) map)))))))
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;;;###autoload
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(defmacro bind-keys (&rest args)
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"Bind multiple keys at once.
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Accepts keyword arguments:
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:map MAP - a keymap into which the keybindings should be
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added
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:prefix KEY - prefix key for these bindings
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:prefix-map MAP - name of the prefix map that should be created
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for these bindings
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:prefix-docstring STR - docstring for the prefix-map variable
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:menu-name NAME - optional menu string for prefix map
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:filter FORM - optional form to determine when bindings apply
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The rest of the arguments are conses of keybinding string and a
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function symbol (unquoted)."
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(macroexp-progn (bind-keys-form args nil)))
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;;;###autoload
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(defmacro bind-keys* (&rest args)
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(macroexp-progn (bind-keys-form args 'override-global-map)))
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(defun get-binding-description (elem)
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(cond
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((listp elem)
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(cond
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((memq (car elem) '(lambda function))
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(if (and bind-key-describe-special-forms
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(stringp (nth 2 elem)))
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(nth 2 elem)
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"#<lambda>"))
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((eq 'closure (car elem))
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(if (and bind-key-describe-special-forms
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(stringp (nth 3 elem)))
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(nth 3 elem)
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"#<closure>"))
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((eq 'keymap (car elem))
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"#<keymap>")
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(t
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elem)))
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;; must be a symbol, non-symbol keymap case covered above
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((and bind-key-describe-special-forms (keymapp elem))
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(let ((doc (get elem 'variable-documentation)))
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(if (stringp doc) doc elem)))
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((symbolp elem)
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elem)
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(t
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"#<byte-compiled lambda>")))
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(defun compare-keybindings (l r)
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(let* ((regex bind-key-segregation-regexp)
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(lgroup (and (string-match regex (caar l))
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(match-string 0 (caar l))))
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(rgroup (and (string-match regex (caar r))
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(match-string 0 (caar r))))
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(lkeymap (cdar l))
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(rkeymap (cdar r)))
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(cond
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((and (null lkeymap) rkeymap)
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(cons t t))
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((and lkeymap (null rkeymap))
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(cons nil t))
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((and lkeymap rkeymap
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(not (string= (symbol-name lkeymap) (symbol-name rkeymap))))
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(cons (string< (symbol-name lkeymap) (symbol-name rkeymap)) t))
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((and (null lgroup) rgroup)
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(cons t t))
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((and lgroup (null rgroup))
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(cons nil t))
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((and lgroup rgroup)
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(if (string= lgroup rgroup)
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(cons (string< (caar l) (caar r)) nil)
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(cons (string< lgroup rgroup) t)))
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(t
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(cons (string< (caar l) (caar r)) nil)))))
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;;;###autoload
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(defun describe-personal-keybindings ()
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"Display all the personal keybindings defined by `bind-key'."
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(interactive)
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(with-output-to-temp-buffer "*Personal Keybindings*"
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(princ (format (concat "Key name%s Command%s Comments\n%s %s "
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"---------------------\n")
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(make-string (- (car bind-key-column-widths) 9) ? )
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(make-string (- (cdr bind-key-column-widths) 8) ? )
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(make-string (1- (car bind-key-column-widths)) ?-)
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(make-string (1- (cdr bind-key-column-widths)) ?-)))
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(let (last-binding)
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(dolist (binding
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(setq personal-keybindings
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(sort personal-keybindings
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(lambda (l r)
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(car (compare-keybindings l r))))))
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(if (not (eq (cdar last-binding) (cdar binding)))
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(princ (format "\n\n%s: %s\n%s\n\n"
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(cdar binding) (caar binding)
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(make-string (+ 21 (car bind-key-column-widths)
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(cdr bind-key-column-widths)) ?-)))
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(if (and last-binding
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(cdr (compare-keybindings last-binding binding)))
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(princ "\n")))
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(let* ((key-name (caar binding))
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(at-present (lookup-key (or (symbol-value (cdar binding))
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(current-global-map))
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(read-kbd-macro key-name)))
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(command (nth 1 binding))
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(was-command (nth 2 binding))
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(command-desc (get-binding-description command))
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(was-command-desc (and was-command
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(get-binding-description was-command)))
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(at-present-desc (get-binding-description at-present))
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)
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(let ((line
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(format
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(format "%%-%ds%%-%ds%%s\n" (car bind-key-column-widths)
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(cdr bind-key-column-widths))
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key-name (format "`%s\'" command-desc)
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(if (string= command-desc at-present-desc)
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(if (or (null was-command)
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(string= command-desc was-command-desc))
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""
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(format "was `%s\'" was-command-desc))
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(format "[now: `%s\']" at-present)))))
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(princ (if (string-match "[ \t]+\n" line)
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(replace-match "\n" t t line)
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line))))
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(setq last-binding binding)))))
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(provide 'bind-key)
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;; Local Variables:
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;; outline-regexp: ";;;\\(;* [^\s\t\n]\\|###autoload\\)\\|("
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;; indent-tabs-mode: nil
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;; End:
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;;; bind-key.el ends here
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