L2/07-052 From: Uma Umamaheswaran Date: 2007-02-02 Subject: Re: CD 19753-7 Character Repertoire Description Language I saw the following document on the L2 register. Not sure if it is on the L2 or UTC agenda. I have some input on this document for UTC and L2 to consider and forward appropriate feedback to US Tag for SC34. V.S. Umamaheswaran ========================== Reference L2 06-397 JTC1/SC34/ISO/IEC JTC 1/SC 34N0799b - ballot closes on 2007-02-21 Document Schema Definition Languages (DSDL) - Part 7: Character Repertoire Description Langauge ---------------- My initial comments input to Canadian SC34 committee: ISO/IEC 10646 has defined 'collections' along with collection identifiers. Why has this standard ignored that important JTC1 standard and the collections defined therein completely and looking for IANA to register these collections? Deliberate ?? OVersight ?? If the current content of 10646 is NOT adequate, SC34 should send in a liaison request to SC2 to get its requirements known to SC2 with rationale. Expecting IANA to register these, while may be desirable, is duplication of work that has already been done in JTC1/SC2. Otherwise end users will end up in having to serve two masters ... ISO and IETF/IANA and these could be easily out of synch and out of control. See ISO/IEC 10646 Annex A, freely available at: http://isotc.iso.org/livelink/livelink/fetch/2000/2489/Ittf_Home/ITTF.htm ================== After discussion with CAC SC34 chair and further comments the following was the Canadian comment to SC34 submitted by Canadian committee. ------------------------------ With reference to named collections, Canada recommends that named collections which correspond to ISO/IEC 10646 collections be identified by the ISO/IEC 10646 collection name and number. Further, Canada recommends * that ISO/IEC 10646 be referenced normatively in ISO/IEC 19757-7 * that the establishment of named collections should be done in consultation with ISO/IEC/JTC1 SC2. * formally recognize ISO/IEC 10646 collections and collection names and ids and the Collection Registry as candidates for named collections * Formally recognize the IANA charset registry and the labels and collections derivable for each label as candidates for named collections * the editors and WG1 explore if the IANA charset registry, http://www.iana.org/assignments/character-sets should be the source of collection labels and associated definitions instead of the referenced collections document from IANA. The charset registry has the added advantage of having the list of character identifiers associated with each of the encodings in the form of Uxxxxxxx (10646 char ids). The IANA charset labels should be another source for collection names. ------------------------------ Best regards, Uma V.S. UMAmaheswaran, Ph.D.