assert(path);
assert(prefix);
+ /* Returns a pointer to the start of the first component after the parts matched by
+ * the prefix, iff
+ * - both paths are absolute or both paths are relative,
+ * and
+ * - each component in prefix in turn matches a component in path at the same position.
+ * An empty string will be returned when the prefix and path are equivalent.
+ *
+ * Returns NULL otherwise.
+ */
+
if ((path[0] == '/') != (prefix[0] == '/'))
return NULL;