updated for version 7.4.330
Problem:    Using a regexp pattern to highlight a specific position can be
            slow.
Solution:   Add matchaddpos() to highlight specific positions efficiently.
            (Alexey Radkov)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 04c9a61..083693b 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -11489,7 +11489,7 @@
 
 	    c = *end;
 	    *end = NUL;
-	    match_add(curwin, g, p + 1, 10, id);
+	    match_add(curwin, g, p + 1, 10, id, NULL);
 	    vim_free(g);
 	    *end = c;
 	}