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Unused explicitly named references ewarning


From: Hans Åberg
Subject: Unused explicitly named references ewarning
Date: Tue, 18 Sep 2018 14:53:37 +0200

Just a thought, Bison might issue a warning if an explicitly named reference is 
not used in the action. For example, in
  exp: exp[x] "/" exp[y] {…}
if the action does not have $x and/or $y.





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