through the buffer, especially scrolling backwards, and also jumping
to the end of a very large buffer.
-Beginning with version 21.3, a parenthesis or a brace in column zero
+Beginning with version 21.4, a parenthesis or a brace in column zero
is highlighted in bold-red face if it is inside a string or a comment,
to indicate that it could interfere with Font Lock (and also with
indentation) and should be moved or escaped with a backslash.