* textmodes/sgml-mode.el (sgml-lexical-context): Recognise

comment-start-skip to comment-end-skip as comment (Bug#4781).

1 files changed, 6 insertions, 0 deletions

diff --git a/lisp/textmodes/sgml-mode.el b/lisp/textmodes/sgml-mode.el
index 52d0a70e257..7cefa160ed1 100644
--- a/lisp/textmodes/sgml-mode.el
+++ b/lisp/textmodes/sgml-mode.el
@@ -1066,6 +1066,12 @@ If nil, start from a preceding tag at indentation."
                   (let ((cdata-start (point)))
                     (unless (search-forward "]]>" pos 'move)
                       (list 0 nil nil 'cdata nil nil nil nil cdata-start))))
+                 ((looking-at comment-start-skip)
+                  ;; parse-partial-sexp doesn't handle <!-- comments -->,
+                  ;; or only if ?- is in sgml-specials, so match explicitly
+                  (let ((start (point)))
+                    (unless (re-search-forward comment-end-skip pos 'move)
+                      (list 0 nil nil nil t nil nil nil start))))
                  ((and sgml-xml-mode (looking-at "<\\?"))
                   ;; Processing Instructions.
                   ;; In SGML, it's basically a normal tag of the form