What I meant was using something like "Search.L" on the right-hand-side.

Something like

[ir_translate]
PopUp0=Shuffle,Info,Mark,Search.L

The Hijack site says that

Items on a PopUp menu must are never translated, which means they are restricted to sending a single button code at a time. While it might be useful sometimes to have a menu item send multiple button codes, this was not possible to implement in any reasonable fashion inside Hijack, so it ain't there.

I wonder if this applies to the .L modifier, too?

Perhaps it would be an idea to take this up in the Programming forum...