With some frequency, we get questions that are purely about programming (such as "What's wrong with my loop?" or "How do I read from a file?") and thus rightly voted on to close as off-topic -- but often with the reason
"General computer science questions are off-topic here, but can be asked on Computer Science Stack Exchange."
This is of course not correct, since computer science is no more about programming than computational science is.
Hence my question: Do we want to (and can we) have a custom off-topic reason that points users to StackOverflow? (either instead of or in addition to the CompSci one -- we had a few questions where this was the correct reason, but more for which SO would have been correct).
(Note: I'm not asking about migration paths; most of these questions would not have been welcome on SO in their current form.)