描述：
- tag-{slug}.php
- tag-{id}.php
- tag.php
例如：
- tag-wordpress.php
- tag-3.php
- tag.php
返回值：
(string) 标签模板文件的完整路径。
源文件：
function get_tag_template() {
$tag = get_queried_object();
$templates = array();
if ( ! empty( $tag->slug ) ) {
$slug_decoded = urldecode( $tag->slug );
if ( $slug_decoded !== $tag->slug ) {
$templates[] = "tag-{$slug_decoded}.php";
}
$templates[] = "tag-{$tag->slug}.php";
$templates[] = "tag-{$tag->term_id}.php";
}
$templates[] = 'tag.php';
return get_query_template( 'tag', $templates );
}
