Default filter attached to xmlrpc_pingback_error.

Filters whether an empty comment should be allowed.

Fires immediately before a comment is marked approved.

Fires immediately after a comment has been removed from the object cache.

Filters the list of post types to automatically close comments for.

Fires when a comment is attempted on a post that has comments closed.

Filters the lifetime of the comment cookie in seconds.

Filters duplicate comment error message.

Fires immediately after a duplicate comment is detected.

Filters the comment flood status.