I have not seen this apparently IETF related Unicode news mentioned here, so FYI: If anyone is interested in Unicode normalization issues, especially wrt to Stringprep or Internationalized Domain Names (IDN), you might be interested in a current public review issue in the UTC: Issue #61 Proposed Update UAX #15 Unicode Normalization Forms A proposed update to UAX #15 for Unicode 4.1.0 is available at the link above. The proposed changes are listed in the Modifications section of the document. The UTC accept comments from the public until January 31th. The above abstract isn't informative, but when you look at the proposed changes: http://www.unicode.org/reports/tr15/tr15-24.html It is clear that this is the next step of the backwards incompatible NFC/NFKC normalization change first discussed in: http://www.unicode.org/review/pr-29.html That change affect all StringPrep profile that uses NFKC normalization. The change may imply interoperability problems, or at worst security problems, when/if IETF wants to use Unicode 4.1 or later in StringPrep. As far as I am aware, the IETF has not given implementors advice on whether to follow the proposed UTC change or not. My experience is that deployed IDN implementations are not implemented the same way. Regards, Simon _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf