Re: RFC: generate the default semantic action

[Akim Demaille]

> Le 14 oct. 2018 à 16:43, Akim Demaille <address@hidden> a écrit :
> 
> Yes, I read that too, and found it extremely ambiguous.

And Steve Johnson’s paper is just the same.

https://www.epaperpress.com/lexandyacc/download/yacc.pdf


By default, the value of a rule is the value of the first element in it ($1). 
Thus, grammar rules of the form
A:B;
frequently need not have an explicit action.