删除/修改默认WordPress类/模板以实现BEM是否安全（）

我正在使用BEM方法创建WordPress主题以进行公开发布。为了实施BEM方法, 我要删除/修改一些默认的WordPress模板和类。例如, 为了在评论列表中实现BEM方法, 我创建了自定义沃克类：

< ?php // Walker class used to create an HTML list of comments. class BEM_Walker_Comment extends Walker_Comment {// Starts the list before the elements are added. public function start_lvl( & $output, $depth = 0, $args = array() ) { $GLOBALS['comment_depth'] = $depth + 1; $output .= '< ol class="comment__children"> ' . "\n"; }// Ends the list of items after the elements are added. public function end_lvl( & $output, $depth = 0, $args = array() ) { $GLOBALS['comment_depth'] = $depth + 1; $output .= "< /ol> \n"; }// Starts the element output. public function start_el( & $output, $comment, $depth = 0, $args = array(), $id = 0 ) { $depth++; $GLOBALS['comment_depth'] = $depth; $GLOBALS['comment'] = $comment; if ( ! empty( $args['callback'] ) ) { ob_start(); call_user_func( $args['callback'], $comment, $args, $depth ); $output .= ob_get_clean(); return; }if ( ( 'pingback' === $comment-> comment_type || 'trackback' === $comment-> comment_type ) & & $args['short_ping'] ) { ob_start(); $this-> ping( $comment, $depth, $args ); $output .= ob_get_clean(); } else { ob_start(); $this-> html5_comment( $comment, $depth, $args ); $output .= ob_get_clean(); } }// Ends the element output, if needed. public function end_el( & $output, $comment, $depth = 0, $args = array() ) { if ( ! empty( $args['end-callback'] ) ) { ob_start(); call_user_func( $args['end-callback'], $comment, $args, $depth ); $output .= ob_get_clean(); return; } $output .= "< /li> \n"; }// Outputs a comment in the HTML5 format. protected function html5_comment( $comment, $depth, $args ) { ?> < li < ?php $this-> comment_class( $this-> has_children ? 'comment__parent' : '', $comment ); ?> > < article class="comment__body"> < footer class="comment__meta"> < div class="comment__author"> < ?php if ( 0 !== $args['avatar_size'] ) { echo get_avatar( $comment, $args['avatar_size'] ); }$url= get_comment_author_url( $comment ); $author= get_comment_author( $comment ); if ( empty( $url ) || 'http://' === $url ) { $author_name = $author; } else { $author_name = '< a class="comment__author-url" href="' . esc_url( $url ) . '" rel="external nofollow"> ' . esc_html( $author ) . '< /a> '; } printf( '< b class="comment__author-name"> %s< /b> ', $author_name ); ?> < /div> < div class="comment-metadata"> < a href="http://www.srcmini.com/< ?php echo esc_url( get_comment_link( $comment, $args ) ); ?>"> < time datetime="< ?php comment_time( 'c' ); ?> "> < ?php printf( __( '%1$s at %2$s', 'runway' ), get_comment_date( '', $comment ), get_comment_time() ); ?> < /time> < /a> < ?php edit_comment_link( __( 'Edit', 'runway' ), '< span class="comment__edit"> ', '< /span> ' ); ?> < /div> < ?php if ( '0' === $comment-> comment_approved ) : ?> < p class="comment-awaiting-moderation"> < ?php esc_html_e( 'Your comment is awaiting moderation.', 'runway' ); ?> < /p> < ?php endif; ?> < /footer> < div class="comment__content"> < ?php comment_text(); ?> < /div> < ?php comment_reply_link( array_merge( $args, array( 'add_below' => 'div-comment', 'depth'=> $depth, 'max_depth' => $args['max_depth'], 'before'=> '< div class="comment__reply"> ', 'after'=> '< /div> ', ) ) ); ?> < /article> < ?php }// Generates semantic classes for each comment element. protected function comment_class( $class = '', $comment = null, $post_id = null, $echo = true ) { $classes = join( ' ', get_comment_class( $class, $comment, $post_id ) ); $classes = str_replace( ' byuser', ' comment--by-user', $classes ); $classes = str_replace( ' comment-author-', ' comment--author-', $classes ); $classes = str_replace( ' bypostauthor', ' comment--by-post-author', $classes ); $classes = str_replace( ' odd', ' comment--odd', $classes ); $classes = str_replace( ' alt', ' comment--alt', $classes ); $classes = str_replace( ' even', ' comment--even', $classes ); $classes = str_replace( ' thread-odd', ' comment--thread-odd', $classes ); $classes = str_replace( ' thread-alt', ' comment--thread-alt', $classes ); $classes = str_replace( ' thread-even', ' comment--thread-even', $classes ); $classes = str_replace( ' depth-', ' comment--depth-', $classes ); // Separates classes with a single space, collates classes for comment DIV. $class = 'class="' . $classes . '"'; if ( $echo ) { echo $class; } else { return $class; } } } // BEM_Walker_Comment class ?>

同样, 我还为导航菜单创建了walker类, 并修改了注释表单以实现BEM方法。
但是, 删除/修改默认的WordPress类和模板是否安全？
#1