wp-admin/includes/class-ftp.php:244$modeoptionalFTP_AUTOASCII function SetType($mode=FTP_AUTOASCII) { if(!in_array($mode, $this->AuthorizedTransferMode)) { $this->SendMSG("Wrong type"); return FALSE; } $this->_type=$mode; $this->SendMSG("Transfer type: ".($this->_type==FTP_BINARY?"binary":($this->_type==FTP_ASCII?"ASCII":"auto ASCII") ) ); return TRUE; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-ftp.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.