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Re: Another - Bison 1.35 works but Bison 1.50 Doesn't

From: Akim Demaille
Subject: Re: Another - Bison 1.35 works but Bison 1.50 Doesn't
Date: 14 Oct 2002 11:17:57 +0200
User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Honest Recruiter)

>>>>> "Paul" == Paul Eggert <address@hidden> writes:

>> So I was thinking that having the user make explicit what they want
>> is a better option.

Paul> But this doesn't follow.  If the Bison user doesn't specify any
Paul> action, and if $$ is untyped but $1 is typed, then the user
Paul> can't make use of the default action's side effects, so the
Paul> default action is functionally equivalent to {} in this case.
Paul> So it is purely a notational convenience that the user doesn't
Paul> need to explicitly say "{}" in this case.  Bison can implement
Paul> it the same, regardless of whether the user explicitly says
Paul> "{}".

Hm...  Convinced :)

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