> On Mon, 23 Mar 2020 21:49:57 +0100 Uwe Brauer <oub@mat.ucm.es> wrote:

   > This function doesn't use the local variables `start' and `end', and
   > evaluating (point-min) and (point-max) in the scope of
   > with-current-buffer again returns the values for the buffer just
   > created.  Replacing `(point-min)' and `(point-max)' there by `start' and
   > `end', respectively, will DTRT, but then you can just use copy-to-buffer

Ahh, I forgot to modify the last line :-[

Thanks for your help. I will try to add an argument later.