id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
18711	Custom Column in edit-comments.php list table	wordpressplugindeveloper		"class-wp-ms-sites-list-table.php, class-wp-media-list-table.php, class-wp-posts-list-table.php and other list table php files they do have a columns hook such as apply_filters( 'manage_posts_columns', $posts_columns, $post_type ); in get_columns method.

But why class-wp-comments-list-table.php is not favored?"	feature request	closed	normal		Comments	3.2.1	normal	invalid	needs-patch