+ if (!IsA(lfirst(lc), Invalid))
+ {
+ or_list = lappend(or_list, lfirst(lc));
+ continue;
+ }
Currently `IsA(lfirst(lc)` works.
but is this generally OK? I didn't find any other examples.
do you need do cast, like `(Node *) lfirst(lc);`
If I understand the logic correctly:
In `foreach(lc, args) ` if everything goes well, it will reach
`hashkey.type = T_Invalid;`
which will make `IsA(lfirst(lc), Invalid)` be true.
adding some comments to the above code would be great.
