Re: RFC: generate the default semantic action

[Hans Åberg]

> On 14 Oct 2018, at 18:49, Akim Demaille <address@hidden> wrote:
> 
>> Le 14 oct. 2018 à 18:13, Hans Åberg <address@hidden> a écrit :
>> 
>> POSIX probably got it from there through copy-and-paste, then.
> 
> Right.
> 
>> So rules with empty RHS do not have any default value. What happen with 
>> Bison’s default value in such a case, that is, what does it get when there 
>> is no $1?
> 
> Garbage.

So then one can choose whatever, like simplest or most efficient in the 
implementation, or conforming to the other variations.