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RFC 3490, "Internationalizing Domain Names in Applications (IDNA)", March 2003

Note: This RFC has been obsoleted by RFC 5890, RFC 5891

Source of RFC: idn (int)
See Also: RFC 3490 w/ inline errata

Errata ID: 266
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Adam Costello
Date Reported: 2003-04-28

Section 4.2 says:

   The ToUnicode output never contains more code points than its

This is not true; I have constructed a counterexample.  

It should say:

    The Punycode decoder can never output more code points than it
    inputs, but Nameprep can, and therefore ToUnicode can.

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