Re: Function call problems with BETWEEN

> Probably the strongest solution would be to copy the entire parse tree.
> Is there already a function to do that? It seems like it would be a lot
> of work to start this from scratch.
> 
> Another possible solution would be to have transformExpr() accept a
> previously transformed parse tree without damaging it. A simple minded
> fix having transformExpr() ignore the T_Const (the "105" node in the
> example) and T_Var nodes did not work.
> 
> Yet another solution would be to have transformExpr() replicate parse
> trees instead of having gram.y do it.
> 
> Any thoughts on this?

I am sure copyfuncs.c has some function to do this, but these are
parse-specific structures.  Not sure if they do have such functions.  I
considered the reuse a possible problem when I wrote the code, but could
not find any problems, so I left it.

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