strcpy (name + sizeof name_prefix - 1, $2);
if (muscle_find_const (name))
warn_at (@2, _("%s `%s' redefined"), "%define variable", $2);
strcpy (name + sizeof name_prefix - 1, $2);
if (muscle_find_const (name))
warn_at (@2, _("%s `%s' redefined"), "%define variable", $2);