unloop, a trifle bizarre

[albertvanderhorst]

I see an unloop in symtab-lookup. My conclusion is that it goes up two levels in the call chain.
A somewhat bizarre tail-call optimization.

You've have a very nice and portable program. With this you have triple environmental dependancy

1. a classical usage of the return stack for call addresses
2. the return stack is used for do loop parameters
3. do loop parameters occupy exactly two places

I had a hard time debugging it in lina because of 3. lina has 3 places for the loop parameters

In terms of clarity you program scores 9 or 10. The unloop makes it somewhere near 4.
So my advice, just leave out this unloop .