忽略点的步骤(.) 在搜索参数中s, 对于所有后端搜索，我们可以使用：

/**
 * Ignore dots in all backend searches
 */
add_action( \'pre_get_posts\', function( \\WP_Query $q ) 
{
    if ( is_admin() && $q->is_search() )
        $q->set( \'s\', str_replace( \'.\', \'\', $q->get( \'s\' ) ) );
} );

/**
 * Ignore dots in all media library searches, for the \'list\' mode
 */
add_action( \'pre_get_posts\', function( \\WP_Query $q ) 
{
    if (  
            is_admin() 
         && $q->is_search() 
         && $q->is_main_query() 
         && \'upload\' === get_current_screen()->id 
         && \'list\' === filter_input( INPUT_GET, \'mode\' ) 
    )
        $q->set( \'s\', str_replace( \'.\', \'\', $q->get( \'s\' ) ) );     
} );

/**
 * Ignore dots in ajax searches
 */
add_filter( \'ajax_query_attachments_args\', function( $args ) 
{
    if( isset( $args[\'s\'] ) ) 
        $args[\'s\'] = str_replace( \'.\', \'\', $args[\'s\'] );
    return $args;
} );