[whatwg] Should target '_search' be taken as part of HTML 5 spec?

[Gavin Sharp]

On Tue, Jul 14, 2009 at 6:39 AM, Honza Bambas<honzab at allpeers.com> wrote:
> Target '_search' makes a link open in a sidebar (Opera) or sidebar-like
> window (IE).

Firefox used to have this behavior, but it was accidentally broken
prior to 3.0 (opened a new tab instead). We then removed it in 3.0.2
because only one person had noticed the change in behavior, and it
didn't seem worth the code complexity or maintenance cost.

https://bugzilla.mozilla.org/show_bug.cgi?id=438526 has more details.
Comment 7 in that bug implies that IE 7 only supports if you enable a
non-default preference option.

Gavin