>> See below my quick attempt at tracking down the problem.
>
> Thanks, I will have a look.
> I promise this is the last time I'm saying this, but I still don't
> understand the change of behavior in Emacs that it now inserts something
> and exits :-[

I can't see any relevant change in the last 10 years, so I don't
understand either.
But given the behavior I see from your function, the "new" behavior
looks right to me, so it may be the result of a bug fix somewhere.


        Stefan


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