Re: How to change default outcome of shift/reduce conflict?

[Hans Aberg]

At 14:49 +0100 2002/01/12, Akim Demaille wrote:
>| or_expr:
>|     expr               {}
>|   | or_expr OR or_expr {}
>|
>| ...
>|  ANSWER expr WITH or_expr
>
>Hans is right: this is the kind of grammar transformation you ought to
>do if you were using a dumb tool.  But do not do that: you are going
>to make your grammar much more complex, harder to maintain,

Who has said anything about grammar transformation?

>and you
>will even loose performances.

What performance loss do you have in your mind?

>Just as nobody would ever program a expr/term/factor grammar for
>arithmetics in LR,

Are you suggesting that that example should be removed from the Bison manual?

>...you should avoid the solution above.

Of, course, the question is why?

  Hans Aberg