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Chess piece names with period in them[Subject Thread] [Add Response]

wdtr2 wrote on Tue, Jul 21, 2020 10:14 PM UTC:

if fn friend $moved:
   set msg join join $moved #codename " is friend";
   echo #msg;
elseif fn enemy $moved:
   set msg join join $moved #codename " is enemy ";
   echo #msg;
else:
   set msg join join join $moved #codename " is not friend or foe " $moved;
   echo #msg;
endif;

I need advice on programming. I have a piece that is .rf, it appears to me the function friend / enemy is not working. That function friend is using isupper or islower. I am guessing that the Period in .rf prevents the function friend to determine if it islower.

Any suggestions how I can add .rf to the function friend?