- * Check if s1 is a substring of s2.
- * If yes, then return 1, else return 0.
- */
+** THIS CODE DOES NOT WORK AS ADVERTISED.
+** It is actually checking if s1 is a PREFIX of s2.
+** All calls to this function need to be checked to see
+** if that needs to be changed. Prefix checking is cheaper, so
+** should be kept if it's sufficient.
+*/
+
+/*
+** Check if s1 is a substring of s2.
+** If yes, then return 1, else return 0.
+*/