wp-admin/includes/class-ftp.php:380 function pwd() { if(!$this->_exec("PWD", "pwd")) return FALSE; if(!$this->_checkCode()) return FALSE; return preg_replace("/^[0-9]{3} \"(.+)\".*$/s", "\\1", $this->_message); }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.