> I can reproduce similar results with M-x shell on GNU/Linux following
> your description (terminating each multi-line with C-j is crusial!!)
> It looks like redisplay fails to "delete to end of line" when lines
> have mouse face.
> Is it really a bug in Emacs, or is this just a matter of how to
> implement output of CR into the comint buffer?
> If it is a real bug, can you fix it?
I think it's really a bug, but it's difficult to fix: basically CR in comint
currently erases line and puts point at BOL, but it should only put point at
BOL (and then overwrite the line when subsequent output comes).
Problem is that comint's normal behavior is not to overwrite text but to
insert it, so it's not trivial to change. Maybe we could try to special
case the situation where CR is immediately followed by LF?
Stefan
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