I dont quite understand why we need to have 3. Isnt 3 a subset of 2? Also ----- 2) If a string contains any Right-to-Left character (defined as belonging to Unicode bidirectional categories "R" and "AL"), the string MUST NOT contain any Left-to-Right character (defined as belonging to Unicode bidirectional category "L").
3) If a string contains any Right-to-Left character (as defined above), a Right-to-Left character MUST be the first character of the string, and a Right-to-Left character MUST be the last character of the string. ----- Also this will mean that there cannot be a mixture between RTL and LTR characters. While I am not familiar with Arabic, I sure have seen English words mixed with Arabic in phrases, albeit rare. I didnt see much discussion on the list before on bidi issues, but I did see an example used: > Assume there were two labels inside the DNS, one reading ABCdef > and the other reading defABC, and both would be displayed > CBAdef. Who would consider that usable for the DNS? Why would both be displayed the same? Shouldn't defABC be displayed as defCBA? Given the context of a domain name within a DNS. Furthermore, the section for bidi in Nameprep should be updated to specify that it is meant to say within a label there cannot be both RTL and LTR characters (eventhough it is mentioned early in the doc that Nameprep deals with labels), because in Stringprep that wasnt clear and also a given "string" can be a "part" of a label, so there could be two "strings", one containing LTR one RTL in the same label. Edmon ----- Original Message ----- From: "James Seng" <[EMAIL PROTECTED]> To: "IETF/IDN WG" <[EMAIL PROTECTED]> Sent: Sunday, July 07, 2002 4:06 AM Subject: [idn] IDN WG Last Call on two major changes to Stringprep > The IETF last call have been concluded and the latest version of > Stringprep is in the I-D directory: > > http://www.ietf.org/internet-drafts/draft-hoffman-stringprep-04.txt > > Other then editorial changes, there are two significant changes*: > - Reference Unicode 3.2, updating all the tables from 3.1 to 3.2. > - Additional Bidirection characters handling, Section 6 and Appendix D. > > The co-chairs is conducting a working group last call on these two > significant changes. Please send any proposed modification of text to the > wg mailing list as well as the wg co-chairs, stating clearly the text to > be modified and the new text. > > This three weeks WG last call will end on 28th July 2002, 23h59 GMT-5. > (We have a three weeks last call instead of the usual two weeks for those > who is busy preparing for IETF Yokohama) > > Marc & James > co-chairs > > * The previous of Stringprep can be found at > http://www.potaroo.net/ietf/old-ids/draft-hoffman-stringprep-03.txt > > >
