WordPress at a glance
filter is not described

enable_login_autofocus filter-hook . WP 4.8.0

Filters whether to print the call to wp_attempt_focus() on the login screen.

Usage

add_filter( 'enable_login_autofocus', 'filter_function_name_7587' );
function filter_function_name_7587( $print ){
	// filter...

	return $print;
}
$print(true/false)
Whether to print the function call.
Default: true

Where the hook is called

In file: /wp-login.php
enable_login_autofocus
wp-login.php 1079
if ( apply_filters( 'enable_login_autofocus', true ) && ! $error ) { ?>

Where the hook is used (in WP core)

Does not used.