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From: "Joe Hildebrand (jhildebr)" <jhildebr@cisco.com>
To: Ned Freed <ned.freed@mrochek.com>
Thread-Topic: [abnf-discuss] Case-sensitive string constants in ABNF
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Subject: Re: [abnf-discuss] Case-sensitive string constants in ABNF
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On 8/8/14, 2:30 AM, "Ned Freed" <ned.freed@mrochek.com> wrote:

>> Slight rephrase.  What would you think about an update to 5234 that did
>> nothing but add a syntax extension capability?
>
>I'd have to see it to say. Given this is the first extension I've seen ~6
>years I think has made some sense, I don't see a pressing need for such a
>mechanism. But I'm not opposed to one either.

Here are a couple of other features I've wanted:

- match any character except for these specified ones
- match any character from a given Unicode category
- match a grapheme cluster
- explicitly operate on codepoints rather than octets

I don't know if extensions would be good for any of these, and there may 
be ways of doing them that I don't know about yet.

-- 
Joe Hildebrand



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