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Re: SORT document, draft -20


On Fri, 7 Mar 2008, Alexey Melnikov wrote:

   A server which implements the SORT and/or THREAD extensions MUST
   collate strings in accordance with the requirements of I18NLEVEL=1,
   as described in [IMAP-I18N], and SHOULD implement and advertise the
   I18NLEVEL=1 extension.

Typo: the last I18NLEVEL=1 should be I18NLEVEL=2.


I accidentally deleted your previous message where you asked about this.
I18NLEVEL=1 is correct. Currently, there are servers that implement SORT/THREAD in accordance with the requirements of I18NLEVEL=1, but do not advertise I18NLEVEL=1. We want those servers to upgrade sooner, rather than later, when imap-i18n (finally) comes out; because there is an ambiguity that a server might advertise SORT/THREAD without complying with I18NLEVEL=1. 

Note the next paragraph:
      Discussion: the SORT and THREAD extensions predate [IMAP-I18N] by
      several years.  At the time of this writing, all known server
      implementations of SORT and THREAD comply with the rules of
      I18NLEVEL=1, but do not necessarily advertise it.  As discussed
      in [IMAP-I18N] section 4.5, all server implementations should
      eventually be updated to comply with the I18NLEVEL=2 extension.
I don't think that SORT/THREAD can mandate I18NLEVEL=2 right now, even with a SHOULD. 

-- Mark --

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