[fpc-pascal] set addition bug?

[Peter Vreman]

>> Fixed in 2.3.1 in r10311.
> 
> Thanks a lot for your quick response. Surely it solves the problem with 
> empty set as the second parameter. But I'm not sure if the other code I 
> sent later would also be fixed? - apparently that one had incorrect 
> valuation when tested with official 2.2.0 for Win32 - and there the 
> second argument was nonempty.
> 
> What do you think?

The other code with "writeln( a in (FrmElKinds + TermElKinds));" doesn't 
fail for me with neither 2.2.0 or 2.3.1 or an old 2.0.2.

Peter