wp-admin/includes/deprecated.php:1496Disables autocomplete on the 'post' form (Add/Edit Post screens) for WebKit browsers, as they disregard the autocomplete setting on the editor textarea. That can break the editor when the user navigates to it with the browser's Back button. See #28037
function post_form_autocomplete_off() { global $is_safari, $is_chrome; _deprecated_function( __FUNCTION__, '4.6.0' ); if ( $is_safari || $is_chrome ) { echo ' autocomplete="off"'; }}Introduced in 4.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/deprecated.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.