- (ftp:open-list FTP [MASK [LONG]]) procedure
Returns an input-port from which a directory list can be retrieved. The optional string MASK selects files to be listed (like *.scm). If the optional flag LONG is given and not #f, then the directory is requested in "long" format (if the server differentiates between short and long directory format). After the directory has been read, the port must be closed to allow further read/write operations in this FTP session.