Restarting inf-ruby confuses robe

[purcell]

If I start robe, then quit the inf-ruby buffer and re-start it, a second M-x robe-start has no effect: robe-running is still t, even though the buffer has disappeared. Perhaps it would be worth tracking the buffer in which robe was loaded, so that its disappearance can be handled.

Just a minor nit. :-)

[dgutov]

Good suggestion, thanks. This should do it.

[purcell]

Yep, looks like a tidy solution. Thanks!