branch: externals/auctex
commit 2ca3d1856a033ee748a8b4a2edf99aa2640ada3d
Author: Ikumi Keita <ik...@ikumi.que.jp>
Commit: Ikumi Keita <ik...@ikumi.que.jp>
Fix slowdown of font lock in doctex mode
`texmathp' limits search by looking for empty lines, which appear
frequently in LaTeX documents. However, docTeX documents often lack
such true empty lines. In such buffer, `texmathp' must search
from (point-min) every time, which slowed down font lock operation
siginificantly.
* texmathp.el (texmathp): Adjust regular expression so that a line
containing only whitespaces except consecutive %'s at its beginning
is considered as empty in doctex mode buffer.
---
texmathp.el | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/texmathp.el b/texmathp.el
index ac2b75c..b0fd02d 100644
--- a/texmathp.el
+++ b/texmathp.el
@@ -274,7 +274,10 @@ See the variable `texmathp-tex-commands' about which
commands are checked."
(interactive)
(let* ((pos (point)) math-on sw-match
(bound (save-excursion
- (if (re-search-backward "[\n\r][ \t]*[\n\r]"
+ (if (re-search-backward
+ (if (eq major-mode 'doctex-mode)
+ "[\n\r]%*[ \t]*[\n\r]"
+ "[\n\r][ \t]*[\n\r]")
nil 1 texmathp-search-n-paragraphs)
(match-beginning 0)
(point-min))))
