webmail.mit.edu and Firefox warn-on-redirect don't work well

[geofft]

There's a somewhat-questionable feature in Firefox in preferences, "Warn me when websites try to redirect or reload the page". Apparently if you enable this and try to log in to webmail, you don't get warned at all on redirect.php, but you just get a blank page. Reloading gets you the "expected" warning that you can click on to permit the redirect.

I haven't debugged this in any detail, but my naïve suspicion is that the remember-your-password prompt, that uses the same warning mechanism (a little bar at the top of the client area with a button on the right), is preventing display of the okay-to-redirect prompt.

[jdreed]

This feature is mostly ineffective, because it doesn't catch <meta http-equiv="REFRESH" ...>. It only catches JavaScript? redirects, and does so poorly. And it's not the save password thing, because FF6 displays that differently, and it's still broken in FF6. I'm tempted to WONTFIX this.

[jdreed]

If someone finds a website other than webmail.mit.edu where this breaks, reproducible with modern FF, re-open it, but the Cyrus retirement effort has begun.