be used to limit processed keys. Set it to 0 to remove key count limitation.
Options object may contain `decodeURIComponent` property (`querystring.unescape` by default),
-it can be used to decode `non-utf8` encoding string if necessary.
+it can be used to decode a `non-utf8` encoding string if necessary.
Example:
The unescape function used by `querystring.parse`,
provided so that it could be overridden if necessary.
+
+It will try to use `decodeURIComponent` in the first place,
+but if that fails it falls back to a safer equivalent that
+doesn't throw on malformed URLs.