("(" number (',' number)* ")")? (* reference spec *)
let regexp qstring = '"' [^ '"']* '"'
-let regexp hreftag = "<A"
+let regexp hreftag = "<" [ 'A' 'a' ]
let regexp href = "href=\"" uri "\""
let regexp hreftitle = "title=" qstring
-let regexp hrefclose = "</A>"
+let regexp hrefclose = "</" [ 'A' 'a' ] ">"
let regexp tex_token = '\\' ident