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annevk/gist:5465e886cf7c45db8a1d

Created May 22, 2014 13:25
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Domain syntax feedback
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gistfile1.md

I just wanted to clarify something with regards to the review note at the end of http://www.unicode.org/reports/tr46/proposed.html#Implementation_Notes

What I'd really like to see is a syntax description. E.g. a domain consists of domain labels separated from each other by domain label separators, optionally with a trailing domain label separator. A domain label is a sequence of one or more code points which are one of X, Y, and Z. A domain label separator is one of X, Y, and Z. Alternatively you could express this using ABNF or some kind of grammar.

That is the kind of thing people writing validators or authoring tools are often looking for. And often web developers as well. They don't want to have to put some input they made up through a series of functions before they know whether the input is valid. I guess another way of saying this would be having a declarative description of a domain.

(This is an open issue https://www.w3.org/Bugs/Public/show_bug.cgi?id=25334 for the URL Standard.)

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