Re: proposal: simplify prologue alternatives into %code

[Paolo Bonzini]

> The changes are small. But on should also keep the door for other 
> langauge than C/C++/Java.

Keeping the door open, yes.  But not at the cost of complicating 
needlessly what already exists now.

> > I'm also against a new directive such as your %cast, since Bison 
> > already has too many and -- in this particular case -- a simple 
> > %define is all that is needed.
>
> Well, it is a fundamental feature of Bison that needs to be expanded. So 
> one adds commands to help the user. If, in principle, all commands could 
> be replaced by %define, woud you want to use it?

Yes.  I mean, "%union" or "%initial-action" could be replaced by 
"%code", and so could many other commands.  Not "%left" and friends, for 
sure.

Paolo