See testcase in URL field.

this is wfm (linux)

Ah, looks like the change to nsGenericElement::ShouldFocus made the exact code in that testcase not quite work (can't call focus() on the anchor). I can still write a testcase that requests expanded privileges and dispatches a trusted event if desired. Or we can wait till jst's "make click() work on all HTML elements" patch lands and then the testcase can just call click(). The key point is that the anchor knows about the docshell its document used to be in, but the document isn't in that docshell anymore.

Oh, the |a| variable should go to null when the iframe navigates away? Or should stay but have no discernible effect?

(and do you have a bug# for that .click() thing?)

Actually, reading code more carefully I was wrong. We're now unsetting the link handler (though not the container?) on the prescontext when we hide in the SHEntry. So this actually is fixed. Ian, the right behavior is that the <a> has no discernible effect. It should absolutely not go away.

Ian, bug 284710.

Not having any effect was what I was hoping you'd say. Thanks for the link. VERIFIED fixed.