I don't have any strong feelings about it, but I think we could keep
this bug report as is.
My main concern was that this piece of information would be buried in a
long sub-thread of an unrelated issue. But that doesn't seem to be the
case here if obsoleting that file is indeed the solution we're going for.
I agree, though I wouldn't yet go as far as asserting with 100% confidence that obsoleting idle.el entirely is what should be done, though it's a possibility. Just that we have an integration problem with duplicate functionality, duplicate code and shared internals. Maybe just fixing the later is enough. Because other than that, I feel the whole of CEDET has been pretty obsolete, de facto, for a while now.
João