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Re: FYI: default %printer/%destructor
From: |
Joel E. Denny |
Subject: |
Re: FYI: default %printer/%destructor |
Date: |
Tue, 21 Nov 2006 16:39:03 -0500 (EST) |
On Tue, 21 Nov 2006, Hans Aberg wrote:
> But here, the LHSs should somehow be adapted to Bison notation.
I think this is the key. We can't hope to avoid collisions with every
notation Bison might possibly want to use in the future or that users
might already be familiar with. There are only so many characters on the
keyboard. Bison will have to develop its own alternatives in some cases.
However, using () in a grammar to group symbols is pervasive in my
experience, and so we might ought to avoid using it for other purposes.
I suspect that using [] in a grammar to mean optional is not nearly as
common.
> I think "[ ]" will work much
> better than "(...)?", which is sometimes used - one needs to attach actions to
> these EBNF constructs as well, and postfix operators like "?" may cause
> problems.
I don't follow.
- Re: FYI: default %printer/%destructor, (continued)
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/19
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/19
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/19
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/21
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/21
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/21
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/21
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/21
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/21
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/21
- Re: FYI: default %printer/%destructor,
Joel E. Denny <=
- Re: FYI: default %printer/%destructor, Paul Eggert, 2006/11/21
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/21
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/21
- Re: FYI: default %printer/%destructor, Paul Eggert, 2006/11/22
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/22
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/22
- Re: FYI: default %printer/%destructor, Paul Eggert, 2006/11/22
- Re: FYI: default %printer/%destructor, Hans Aberg, 2006/11/24
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/23
- Re: FYI: default %printer/%destructor, Paul Eggert, 2006/11/23