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-rw-r--r--lisp/mail/ietf-drums.el30
1 files changed, 20 insertions, 10 deletions
diff --git a/lisp/mail/ietf-drums.el b/lisp/mail/ietf-drums.el
index db77aba172f..85aa27235fc 100644
--- a/lisp/mail/ietf-drums.el
+++ b/lisp/mail/ietf-drums.el
@@ -65,6 +65,21 @@ backslash and doublequote.")
(modify-syntax-entry ?\' "_" table)
table))
+(defvar ietf-drums-comment-syntax-table
+ (let ((table (copy-syntax-table ietf-drums-syntax-table)))
+ (modify-syntax-entry ?\" "w" table)
+ table)
+ "In comments, DQUOTE is normal and does not start a string.")
+
+(defun ietf-drums--skip-comment ()
+ ;; From just before the start of a comment, go to the end. Returns
+ ;; point. If the comment is unterminated, go to point-max.
+ (condition-case ()
+ (with-syntax-table ietf-drums-comment-syntax-table
+ (forward-sexp 1))
+ (scan-error (goto-char (point-max))))
+ (point))
+
(defun ietf-drums-token-to-list (token)
"Translate TOKEN into a list of characters."
(let ((i 0)
@@ -109,14 +124,7 @@ backslash and doublequote.")
(forward-sexp 1)
(error (goto-char (point-max)))))
((eq c ?\()
- (delete-region
- (point)
- (condition-case nil
- (with-syntax-table (copy-syntax-table ietf-drums-syntax-table)
- (modify-syntax-entry ?\" "w")
- (forward-sexp 1)
- (point))
- (error (point-max)))))
+ (delete-region (point) (ietf-drums--skip-comment)))
(t
(forward-char 1))))
(buffer-string))))
@@ -130,9 +138,11 @@ backslash and doublequote.")
(setq c (char-after))
(cond
((eq c ?\")
- (forward-sexp 1))
+ (condition-case ()
+ (forward-sexp 1)
+ (scan-error (goto-char (point-max)))))
((eq c ?\()
- (forward-sexp 1))
+ (ietf-drums--skip-comment))
((memq c '(?\ ?\t ?\n ?\r))
(delete-char 1))
(t