eric pouech (@epo) commented about programs/cmd/builtins.c:
return nexttoken; }
+/**************************************************************************
I wonder if we'd rather use something like
```plaintext static int get_varidx_upper_boundary(int varidx) { if (varidx < 26) return 26; if (varidx < 52) return 52; return 62; } ```
and rather use
```plaintext varoffset < get_varidx_upper_boundary(varidx) ```