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Re: FYI: default %printer/%destructor
From: |
Paul Eggert |
Subject: |
Re: FYI: default %printer/%destructor |
Date: |
Tue, 21 Nov 2006 13:58:33 -0800 |
User-agent: |
Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux) |
"Joel E. Denny" <address@hidden> writes:
> I suspect that using [] in a grammar to mean optional is not nearly as
> common.
It's pretty common, I'm afraid. It's in the ISO standard for EBNF,
for example.
http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html
Characters unused by ISO EBNF include .:!+_%@&#$<>/\^`~.
I sort of liked the notation a.b to denote the b component of a, as
it's a common notation in many languages. But I admit I haven't been
following this discussion too closely.
- Re: FYI: default %printer/%destructor, (continued)
- 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, 2006/11/21
- Re: FYI: default %printer/%destructor,
Paul Eggert <=
- 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
- Re: FYI: default %printer/%destructor, Joel E. Denny, 2006/11/24