Hi Rebols,
I've got a little parse problem. I try to parse something like
a1=1, a2=2, a3=3, a4
where a1 to a3 have to be present, a4 may or may not be there,
it is unspecified, which is at which position, and they may be
on subsequent lines, without the commas seperating them.
Any ideas on how to best parse this, to get the values for a1
to a3 and the presence of a4, respectively?
thanks in advance
Ingo
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