Greek Casefolding sigma
phoffman at imc.org
Sat Mar 29 22:05:26 CET 2008
Let me make an attempt at this, since those of the previous posters
didn't seem to work.
At 9:00 PM +0200 3/29/08, segred at ics.forth.gr wrote:
>What I ask is not to introduce a 25th character in our language (the
>final sigma as a new character).
>The current status is: The final sigma is mapped to the small sigma.
That is, in IDNA2003, a final sigma in an input string is mapped to a
>Is the IDNA200X with the DISALLOWED form of final sigma still preserving this
>mapping inside the protocol?
No, because there is no mapping inside the protocol. That seems to be
unclear in the current protocol document
(draft-klensin-idnabis-protocol-04.txt). However, the protocol does
suggest, possibly too gently, that the application that takes the
user's input might do mapping itself, outside the protocol:
5.3. Character Changes in Preprocessing or the User Interface
The Unicode string MAY then be processed, in a way specific to the
local environment, to make the result of the IDNA processing match
user expectations. For instance, at this step, it would be
reasonable to convert all upper case characters to lower case, if
this makes sense in the user's environment.
An interface that understands that a final sigma should be mapped to
a small sigma would do that in this step.
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