/**
 * Adds a pretty "Continue Reading" link to custom post excerpts.
 *
 * To override this link in a child theme, remove the filter and add your own
 * function tied to the get_the_excerpt filter hook.
 */
function twentyeleven_custom_excerpt_more($output)
{
    if (has_excerpt() && !is_attachment()) {
        $output .= twentyeleven_continue_reading_link();
    }
    return $output;
}

/**
 * Replaces "[...]" (appended to automatically generated excerpts) with an ellipsis and twentyeleven_continue_reading_link().
 *
 * To override this in a child theme, remove the filter and add your own
 * function tied to the excerpt_more filter hook.
 */
function twentyeleven_auto_excerpt_more($more)
{
    return ' …' . twentyeleven_continue_reading_link();
}