+ elsif ($attr->{stable}) {
+ $title .= sprintf ' until %vd', $attr->{stable};
+ }
+ if ($attr->{experimental}) {
+ $title = sprintf '<span title="experimental::%s">%s</span>',
+ $attr->{experimental}, $title;
+ }
+ if ($attr->{feature}) {
+ $title = sprintf('<span title="%s">feature</span>', $attr->{feature})
+ . (defined $title && ", $title");
+ }
+ $desc .= sprintf ' <em class="ex">(%s)</em>', $title;