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authorNoam Postavsky <npostavs@gmail.com>2019-05-15 18:51:30 -0400
committerNoam Postavsky <npostavs@gmail.com>2019-05-15 19:04:14 -0400
commite7e92dc5d24ac3bcde69732bab6a6c3c0d9de97b (patch)
treeb84c65ba64a40bf9f94787f56b8f939c8a938374 /lisp/textmodes/sgml-mode.el
parent520aca2d890a051621b730b0a7e97dd07a546df4 (diff)
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Fix merge of sgml-syntax-propertize-rules
During the merge of emacs-26, the sgml-syntax-propertize-rules part of 2019-01-17 "* lisp/textmodes/sgml-mode.el: Try and fix bug#33887." got lost in the conflict against 2019-05-09 "Recognize single quote attribute values in nxml and sgml (Bug#35381)". * lisp/textmodes/sgml-mode.el (sgml-syntax-propertize-rules): Reapply the 2019-01-17 change to speed up sgml-syntax-propertize-rules, taking into account the 2019-05-09 which means we have to handle single quotes as well.
Diffstat (limited to 'lisp/textmodes/sgml-mode.el')
-rw-r--r--lisp/textmodes/sgml-mode.el21
1 files changed, 15 insertions, 6 deletions
diff --git a/lisp/textmodes/sgml-mode.el b/lisp/textmodes/sgml-mode.el
index 6dc1b9e727e..11b30537e67 100644
--- a/lisp/textmodes/sgml-mode.el
+++ b/lisp/textmodes/sgml-mode.el
@@ -339,12 +339,21 @@ Any terminating `>' or `/' is not matched.")
("--[ \t\n]*\\(>\\)" (1 "> b"))
("\\(<\\)[?!]" (1 (prog1 "|>"
(sgml-syntax-propertize-inside end))))
- ;; Quotes outside of tags should not introduce strings.
- ;; Be careful to call `syntax-ppss' on a position before the one we're
- ;; going to change, so as not to need to flush the data we just computed.
- ("[\"']" (0 (if (prog1 (zerop (car (syntax-ppss (match-beginning 0))))
- (goto-char (match-end 0)))
- (string-to-syntax ".")))))))
+ ;; Quotes outside of tags should not introduce strings which end up
+ ;; hiding tags. We used to test every quote and mark it as "."
+ ;; if it's outside of tags, but there are too many quotes and
+ ;; the resulting number of calls to syntax-ppss made it too slow
+ ;; (bug#33887), so we're now careful to leave alone any pair
+ ;; of quotes that doesn't hold a < or > char, which is the vast majority.
+ ("\\(?:\\(1:\"\\)[^\"<>]*[<>\"]\\|\\(1:'\\)[^'<>]*[<>']\\)"
+ (1 (unless (memq (char-before) '(?\' ?\"))
+ ;; Be careful to call `syntax-ppss' on a position before the one
+ ;; we're going to change, so as not to need to flush the data we
+ ;; just computed.
+ (if (prog1 (zerop (car (syntax-ppss (match-beginning 0))))
+ (goto-char (1- (match-end 0))))
+ (string-to-syntax ".")))))
+ )))
(defun sgml-syntax-propertize (start end)
"Syntactic keywords for `sgml-mode'."