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Define "dead keys" in key-translation-map, not in global-map.

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(iso-accents-compose): New subroutine to do the composition.
Method of doing so is new.
(iso-accents-accent-key): Use iso-accents-compose.
(iso-accents-compose-key): New function.
This commit is contained in:
Richard M. Stallman 1993-10-24 23:21:21 +00:00
parent 30d47262d1
commit da8d0b9e2d
1 changed files with 54 additions and 45 deletions
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99
lisp/international/iso-acc.el
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@ -107,59 +107,68 @@
)
"Association list for ISO accent combinations.")
(defun iso-accents-accent-key ()
"Modify the following character by adding an accent to it."
(interactive)
;; Pick up the accent character.
(let ((first-char last-command-char))
;; Display it and backup.
(insert first-char)
(backward-char 1)
;; Wait for the second key and look up the combination in the list.
(let* ((second-char (read-event))
(entry (assoc (list first-char second-char) iso-accents-list)))
(if entry
;; Found it: delete the first character and insert the combination.
(progn
(delete-char 1)
(insert (car (cdr entry))))
;; Otherwise, advance and schedule the second key for execution.
(forward-char 1)
(setq unread-command-events (list second-char))
;; If it is not a self-insert-command, ring the terminal bell.
(or (eq (key-binding (make-vector 1 second-char)) 'self-insert-command)
(beep 1))))))
(defvar iso-accents-minor-mode nil
"*Non-nil enables ISO-accents mode.
Setting this variable makes it local to the current buffer.
See `iso-accents-mode'.")
(make-variable-buffer-local 'iso-accents-minor-mode)
;; A minor mode map `iso-accents-prefix-map' is used to activate the
;; dead key handling depending on the value of iso-accents-minor-mode.
(defvar iso-accents-prefix-map nil
"Keymap for ISO-accents minor mode.")
(defun iso-accents-accent-key (prompt)
"Modify the following character by adding an accent to it."
;; Pick up the accent character.
(if iso-accents-minor-mode
(iso-accents-compose prompt)
(char-to-string last-input-char)))
;; Create the minor-mode keymap, if needed.
(or iso-accents-prefix-map
(progn
(setq iso-accents-prefix-map (make-sparse-keymap))
(define-key iso-accents-prefix-map "'" 'iso-accents-dead-key)
(define-key iso-accents-prefix-map "`" 'iso-accents-dead-key)
(define-key iso-accents-prefix-map "^" 'iso-accents-dead-key)
(define-key iso-accents-prefix-map "\"" 'iso-accents-dead-key)))
(defun iso-accents-compose-key (prompt)
"Modify the following character by adding an accent to it."
;; Pick up the accent character.
(let ((combined (iso-accents-compose prompt)))
(if unread-command-events
(let ((unread unread-command-events))
(setq unread-command-events nil)
(error "Characters %s and %s cannot be composed"
(single-key-description (aref combined 0))
(single-key-description (car unread)))))
combined))
;; Add the dead key minor mode map to the minor mode maps.
(or (assq 'iso-accents-minor-mode minor-mode-map-alist)
(setq minor-mode-map-alist
(cons (cons 'iso-accents-minor-mode iso-accents-prefix-map)
minor-mode-map-alist)))
(defun iso-accents-compose (prompt)
(let* ((first-char last-input-char)
;; Wait for the second key and look up the combination.
(second-char (if (or prompt
(not (eq (key-binding "a")
'self-insert-command)))
(progn
(message "%s%c"
(or prompt "Compose with ")
first-char)
(read-event))
(insert first-char)
(prog1 (read-event)
(delete-region (1- (point)) (point)))))
(entry (assoc (list first-char second-char) iso-accents-list)))
(if entry
;; Found it: delete the first character and insert the combination.
(concat (list (nth 1 entry)))
;; Otherwise, advance and schedule the second key for execution.
(setq unread-command-events (list second-char))
(vector first-char))))
(or key-translation-map (setq key-translation-map (make-sparse-keymap)))
;; For sequences starting with an accent character,
;; use a function that tests iso-accents-minor-mode.
(define-key key-translation-map "'" 'iso-accents-accent-key)
(define-key key-translation-map "`" 'iso-accents-accent-key)
(define-key key-translation-map "^" 'iso-accents-accent-key)
(define-key key-translation-map "\"" 'iso-accents-accent-key)
;; For sequences starting with a compose key,
;; always do the compose processing.
(define-key key-translation-map [compose ?\'] 'iso-accents-compose-key)
(define-key key-translation-map [compose ?\`] 'iso-accents-compose-key)
(define-key key-translation-map [compose ?^] 'iso-accents-compose-key)
(define-key key-translation-map [compose ?\"] 'iso-accents-compose-key)
;; The way to make compose work is to translate some other key sequence
;; into it, using key-translation-map.
;; It is a matter of taste if you want the minor mode indicated
;; in the mode line...