Ticket #20490: comment-template-formsubmit.patch

wp-includes/comment-template.php

@@ -1544 +1544 @@
                 'title_reply_to'       => __( 'Leave a Reply to %s' ),
                 'cancel_reply_link'    => __( 'Cancel reply' ),
                 'label_submit'         => __( 'Post Comment' ),
+                'tabindex'             => '',
         );
 
         $args = wp_parse_args( $args, apply_filters( 'comment_form_defaults', $defaults ) );
@@ -1575 +1576 @@
                                                 <?php echo apply_filters( 'comment_form_field_comment', $args['comment_field'] ); ?>
                                                 <?php echo $args['comment_notes_after']; ?>
                                                 <p class="form-submit">
-                                                        <input name="submit" type="submit" id="<?php echo esc_attr( $args['id_submit'] ); ?>" value="<?php echo esc_attr( $args['label_submit'] ); ?>" />
-                                                        <?php comment_id_fields( $post_id ); ?>
+                                                        <?php 
+                                                        apply_filters( 'comment_form_submit_button', submit_button( $args['label_submit'], 'button', 'submit', false, array( 'id' => $args['id_submit'] ) ), $args );
+                                                        comment_id_fields( $post_id ); ?>
+                                                        
                                                 </p>
                                                 <?php do_action( 'comment_form', $post_id ); ?>
                                         </form>