On 10 maj 2012, at 03:50, Peter Saint-Andre wrote:

> I'm almost finished with the codepoint table. Basically my process has
> been to copy over the codepoint table from RFC 5892 and update it in
> accordance with the new PRECIS rules and Unicode 6.1 UnicodeData.txt.
> While completing this work, I realize it would have been very helpful
> for the IDNA table to contain a column describing the reason for each
> assignment (e.g., codepoints 1100..115F are DISALLOWED in IDNA2008
> because they trigger the OldHangulJamo (I) rule). This is more work for
> the person making the codepoint table (c'est moi), but it provides
> better traceability, so I am thinking about adding this information to
> the PRECIS codepoint table. Let me know if you have concerns. :)

Note that the table in 5892 is non-normative. Similar derived lists exists for 
the latest version of Unicode at IANA. One should really not "copy a table", 
but instead use the algorithm specified. If you do, then you would directly see 
what the reason is for the derived property value.

You can also have a look at http://stupid.domain.name/idna

   Patrik

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