CocoonのGist埋め込み機能のデモ

gist-demo.php

//gistのembed対応（WordPressのエディターにURLを入力するだけで利用できる）
wp_embed_register_handler( 'gist', '/https?:\/\/gist\.github\.com\/([a-z0-9]+)\/([a-z0-9]+)(#file=.*)?/i', 'wp_embed_register_handler_for_gist' );
if ( !function_exists( 'wp_embed_register_handler_for_gist' ) ):
function wp_embed_register_handler_for_gist( $matches, $attr, $url, $rawattr ) {
  $embed = sprintf(
    '<script src="https://gist.github.com/%1$s/%2$s.js"></script>',
    esc_attr( $matches[1] ),
    esc_attr( $matches[2] )
    );
  return apply_filters( 'embed_gist', $embed, $matches, $attr, $url, $rawattr );
}
endif;