Re: Last Call: <draft-ishikawa-yrpunl-ucode-urn-01.txt> (A URN Namespace For The ucode) to Informational RFC

Julian Reschke <julian.reschke@gmx.de> Wed, 18 January 2012 14:25 UTC

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Date: Wed, 18 Jan 2012 15:25:25 +0100
From: Julian Reschke <julian.reschke@gmx.de>
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To: Mykyta Yevstifeyev <evnikita2@gmail.com>
Subject: Re: Last Call: <draft-ishikawa-yrpunl-ucode-urn-01.txt> (A URN Namespace For The ucode) to Informational RFC
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On 2012-01-17 19:27, Mykyta Yevstifeyev wrote:
> Hello,
>
> Having reviewed this document, I think there is no problem with its
> publication.  Several tiny comments:
>
> 1) "RFID" in the Introduction needs expanding at first use.
>
> 2)   ucode-value = 32hex-decimal
>     hex-decimal = "0" / "1" / "2" / "3" / "4" / "5" / "6" / "7" /
>                   "8" / "9" / "A" / "B" / "C" / "D" / "E" / "F"
>
> may be changed to:
>
>     ucode-value = 32HEXDIG
>
> and that's RFC 5234 which defines<HEXDIG>  so you may refer to it later.
>
> 3)
>
> Rules for lexical equivalence:
>
>     The entire UCODE-URN is case-sensitive.
>
> This is at least wrong for the first three chars in URN (the URI
> scheme name "urn"), that is case-insensitive as per RFC 3986.  What's
> the reason for setting such regulation?
> ...

What's case-sensitive depends on context; for instance, when comparing 
XML namespace URIs or Atom IDs, everything is case-sensitive. See also 
<http://greenbytes.de/tech/webdav/rfc3986.html#rfc.section.6.2>.

Best regards, Julian