Filters duplicate comment error message.
$comment_duplicate_messagestringwp-includes/comment.php:746wp_allow_comment() * Filters duplicate comment error message. * * @since 5.2.0 * * @param string $comment_duplicate_message Duplicate comment error message. */ $comment_duplicate_message = apply_filters( 'comment_duplicate_message', __( 'Duplicate comment detected; it looks as though you’ve already said that!' ) ); if ( $wp_error ) { return new WP_Error( 'comment_duplicate', $comment_duplicate_message, 409 ); } else { if ( wp_doing_ajax() ) { die( $comment_duplicate_message );Introduced in 5.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.