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Re: [ldapext] UTF-8 full support in LDIF / LDIF v2
Kurt Zeilenga wrote:
>
> IDNA when through all of this. They found that they had to place
> significant restrictions on Unicode domain components to ensure that a
> domain name was well-formed Unicode text.
I'd like to learn more about the term "well-formed Unicode text". Do you
have a reference at hand? [NAMEPREP] and/or [STRINGPREP]?
I found
http://www.unicode.org/versions/Unicode5.1.0/#Conformance_Changes
which contains a replacement for the text in Unicode5.0 standard.
(Strange that one cannot simply download the recent version.)
> You have not suggested placing similar restrictions on LDIF but simply
> removing the ASCII restriction.
Would it help to define similar restrictions?
Stepping back a bit from the details of the interesting Unicode issues
posted here I wonder what the general strategy of the IETF regarding
these issues is? I remember discussions on the ietf-pkix mailing list
mentioning problems like these (e.g. when displaying subject names of
X.509 certs) without any real solution.
I think any system which takes (user) input, decodes it to a Unicode
code point sequence and display it to the user is affected by issues
with BIDI, combining characters and duplicate Unicode points.
Ciao, Michael.
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