[Standards] summary: allowable characters
stpeter at jabber.org
Thu Aug 2 19:25:46 UTC 2007
Thomas Charron wrote:
> On 8/2/07, Peter Saint-Andre <stpeter at jabber.org> wrote:
>> What specifically breaks? Does it depend on which characters would be
>> allowed in nodeprep2? I agree that / and @ are problematic, but the
>> characters " & ' < > seem less so. But I may be missing something.
> I believe this section was a left over from the original pre-rfc
> specification which was attempting to fit a JID into standardized URI
> notation, which specifically explains allowable characters, reserved
> characters, and characters which must be escaped. See rfc 2396. The
> section which deals with those characters is:
> The angle-bracket "<" and ">" and double-quote (") characters are
> excluded because they are often used as the delimiters around URI in
> text documents and protocol fields. The character "#" is excluded
> because it is used to delimit a URI from a fragment identifier in URI
> references (Section 4). The percent character "%" is excluded because
> it is used for the encoding of escaped characters.
> delims = "<" | ">" | "#" | "%" | <">
Yeah, but a JID isn't a URI and never will be, that's why I went through
all the trouble of writing RFC 4622. But I agree with you that similar
reasoning led to exclusion of those characters (and & ' too).
> I'll go jump down in a hole again. :-)
Oh don't, we cherish your occasional visits. :)
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