- * If both p1 and p2 start with (different) suffix, the order is
- * determined by config file.
- *
- * Note that we don't have to deal with the situation when both p1 and
- * p2 start with the same suffix because the common part is already
- * consumed by the caller.
+ * If both s1 and s2 contain a (different) suffix at that position,
+ * their order is determined by the order of those two suffixes in the
+ * configuration.