Xcalc currently uses a dot to separate the parts of real numbers. In
non-Englisch or non-American countries, a comma is used instead.
Therefore the comma is to be found on the numberpad. When running X
with, e.g. German localisation, I have to type a dot with the left index
while using the numberpad with the right hand. This is somewhat
inconvinient and should be changed.
I personally do not care whether xcalc actually shows a comma instead of
a dot, but it should be able to accept a comma as a dot, depending from
the localisation. I don't know, whether xcalc uses the comma character
for some other function, but if not, xcalc could just accept comma and
dot as a dot. So you don't have to deal with localisation really.
I hope that you can fix this yourselves or find the responsible
maintainer of the original source code.
Thank you very much
Yours