* horizontal line regex

lib/Text/Dokuwiki/Regexps.pm

@@ -117,4 +117,12 @@ $regexps->{emptyline} = qr{
 )*
 }mx;
 
+$regexps->{hrule} = qr/
+(?:
+  ^                # line start
+  (?: -{4,} )      # four or more dashes
+  (?: $EOL | $ )   # newline or file end
+)
+/mx;
+
 1;