* The maximum permissible match length at this position.
* @nice_len
* Stop searching if a match of at least this length is found.
+ * Must be <= @max_len.
* @max_search_depth
- * Limit on the number of potential matches to consider.
+ * Limit on the number of potential matches to consider. Must be >= 1.
* @offset_ret
* If a match is found, its offset is returned in this location.
*