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Re: [mediaqueries] Editorial: <media-condition> grammar requires unbounded look-ahead

From: Simon Sapin <simon.sapin@exyr.org>
Date: Tue, 24 Mar 2015 00:44:59 +0100
Message-ID: <5510A57B.6070501@exyr.org>
To: www-style@w3.org
On 23/03/15 21:06, Florian Rivoal wrote:
> In an implementation, I agree with you that what you suggest is
> better. However, in terms of language they accept, the two are
> equivalent and the current approach makes the spec easier to write as
> you note. Besides, the intermediate non terminals are not exposed or
> reused anywhere.
> Since implementations can do the right thing and implement the more
> efficient and equivalent grammar you suggest, is there any downside
> in leaving the spec as it is, for readability reasons?

Right, the two grammars are equivalent and so the change is only editorial.

I donít mind leaving it as-is, but keeping spec grammars LL(k) seemed to 
have been a goal in the past. Is it still? (Or was it really?)

Simon Sapin
Received on Monday, 23 March 2015 23:45:23 UTC

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