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(show-paren-command-hook): Do nothing if not window-system.

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Richard M. Stallman 1993-07-10 05:16:08 +00:00
parent 757e603c90
commit 80e1673824
1 changed files with 50 additions and 49 deletions
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99
lisp/paren.el
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@ -33,61 +33,62 @@
;; Find the place to show, if there is one,
;; and show it until input arrives.
(defun show-paren-command-hook ()
(let (pos dir mismatch (oldpos (point))
(face (if (face-equal 'highlight 'region)
'underline 'highlight)))
(cond ((eq (char-syntax (following-char)) ?\()
(setq dir 1))
((eq (char-syntax (preceding-char)) ?\))
(setq dir -1)))
(save-excursion
(save-restriction
;; Determine the range within which to look for a match.
(if blink-matching-paren-distance
(narrow-to-region (max (point-min)
(- (point) blink-matching-paren-distance))
(min (point-max)
(+ (point) blink-matching-paren-distance))))
;; Scan across one sexp within that range.
(condition-case ()
(setq pos (scan-sexps (point) dir))
(error nil))
;; See if the "matching" paren is the right kind of paren
;; to match the one we started at.
(if pos
(let ((beg (min pos oldpos)) (end (max pos oldpos)))
(and (/= (char-syntax (char-after beg)) ?\$)
(setq mismatch
(/= (char-after (1- end))
(logand (lsh (aref (syntax-table)
(char-after beg))
-8)
255))))))
;; If they don't properly match, don't show.
(if mismatch
(progn
(message "Paren mismatch")
;;; (setq pos nil)
))))
(cond (pos
(if show-paren-overlay
(move-overlay show-paren-overlay (- pos dir) pos)
(setq show-paren-overlay
(make-overlay (- pos dir) pos)))
(overlay-put show-paren-overlay 'face face)
;;; This is code to blink the highlighting.
;;; It is desirable to avoid this because
;;; it would interfere with auto-save and gc when idle.
(if window-system
(let (pos dir mismatch (oldpos (point))
(face (if (face-equal 'highlight 'region)
'underline 'highlight)))
(cond ((eq (char-syntax (following-char)) ?\()
(setq dir 1))
((eq (char-syntax (preceding-char)) ?\))
(setq dir -1)))
(save-excursion
(save-restriction
;; Determine the range within which to look for a match.
(if blink-matching-paren-distance
(narrow-to-region (max (point-min)
(- (point) blink-matching-paren-distance))
(min (point-max)
(+ (point) blink-matching-paren-distance))))
;; Scan across one sexp within that range.
(condition-case ()
(setq pos (scan-sexps (point) dir))
(error nil))
;; See if the "matching" paren is the right kind of paren
;; to match the one we started at.
(if pos
(let ((beg (min pos oldpos)) (end (max pos oldpos)))
(and (/= (char-syntax (char-after beg)) ?\$)
(setq mismatch
(/= (char-after (1- end))
(logand (lsh (aref (syntax-table)
(char-after beg))
-8)
255))))))
;; If they don't properly match, don't show.
(if mismatch
(progn
(message "Paren mismatch")
;;; (setq pos nil)
))))
(cond (pos
(if show-paren-overlay
(move-overlay show-paren-overlay (- pos dir) pos)
(setq show-paren-overlay
(make-overlay (- pos dir) pos)))
(overlay-put show-paren-overlay 'face face)
;;; This is code to blink the highlighting.
;;; It is desirable to avoid this because
;;; it would interfere with auto-save and gc when idle.
;;; (while (sit-for 1)
;;; (overlay-put show-paren-overlay
;;; 'face
;;; (if (overlay-get show-paren-overlay
;;; 'face)
;;; nil face)))
)
(t
(and show-paren-overlay (overlay-buffer show-paren-overlay)
(delete-overlay show-paren-overlay))))))
)
(t
(and show-paren-overlay (overlay-buffer show-paren-overlay)
(delete-overlay show-paren-overlay)))))))
(add-hook 'post-command-hook 'show-paren-command-hook)