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authorAlan Mackenzie <acm@muc.de>2021-08-15 18:08:25 +0000
committerAlan Mackenzie <acm@muc.de>2021-08-15 18:11:42 +0000
commitb3aec9ee483c82aa23e604ea61ce0777e9ef2ebd (patch)
treee1d7c89545b792a56d837821d1d682d362b4ba29
parentb77f6af24e9193a4f70622cda6d641c58e885c22 (diff)
downloademacs-b3aec9ee483c82aa23e604ea61ce0777e9ef2ebd.tar.gz
CC Mode: Fix unstable fontification of doc strings.
Also optimize a loop over several line doc-comments. * lisp/progmodes/cc-fonts.el (c-font-lock-doc-comments): New variable comment-mid, used as the starting point for applying c-doc-face-name in a line comments. In block comments, apply this face not from `comment-beg' but from `region-beg', no earlier than the start of the fontification region.
-rw-r--r--lisp/progmodes/cc-fonts.el15
1 files changed, 9 insertions, 6 deletions
diff --git a/lisp/progmodes/cc-fonts.el b/lisp/progmodes/cc-fonts.el
index fd00d65e335..5f3e2eaaf80 100644
--- a/lisp/progmodes/cc-fonts.el
+++ b/lisp/progmodes/cc-fonts.el
@@ -2733,13 +2733,14 @@ need for `pike-font-lock-extra-types'.")
;;
;; This function might do hidden buffer changes.
- (let (comment-beg region-beg)
+ (let (comment-beg region-beg comment-mid)
(if (memq (get-text-property (point) 'face)
'(font-lock-comment-face font-lock-comment-delimiter-face))
;; Handle the case when the fontified region starts inside a
;; comment.
(let ((start (c-literal-start)))
- (setq region-beg (point))
+ (setq region-beg (point)
+ comment-mid (point))
(when start
(goto-char start))
(when (looking-at prefix)
@@ -2765,7 +2766,8 @@ need for `pike-font-lock-extra-types'.")
(goto-char comment-beg)
(c-in-literal)))))
(setq comment-beg nil))
- (setq region-beg comment-beg))
+ (setq region-beg comment-beg
+ comment-mid comment-beg))
(if (elt (parse-partial-sexp comment-beg (+ comment-beg 2)) 7)
;; Collect a sequence of doc style line comments.
@@ -2773,15 +2775,16 @@ need for `pike-font-lock-extra-types'.")
(goto-char comment-beg)
(while (and (progn
(c-forward-single-comment)
- (c-put-font-lock-face comment-beg (point)
+ (c-put-font-lock-face comment-mid (point)
c-doc-face-name)
(skip-syntax-forward " ")
- (setq comment-beg (point))
+ (setq comment-beg (point)
+ comment-mid (point))
(< (point) limit))
(looking-at prefix))))
(goto-char comment-beg)
(c-forward-single-comment)
- (c-put-font-lock-face comment-beg (point) c-doc-face-name))
+ (c-put-font-lock-face region-beg (point) c-doc-face-name))
(if (> (point) limit) (goto-char limit))
(setq comment-beg nil)