Label separators in Dzongkha (Re: Feedback of PAN L10n project)

[Harald Alvestrand]

Sarmad Hussain wrote:
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> http://www.panl10n.net/english/Outputs%20Phase%202/RRCs/RRC-Technology/IDNFeedbackofPANL10nproject.pdf 
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> to retrieve the document.
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Thank you very much for this wide-ranging input.

There are many questions one could ask, but I'll pick one...
you say that in Dzongkha, the character U+0F7F, which is TIBETAN SIGN 
RNAM BCAD, should be regarded as a label separator.

This character is of Unicode class Mc (Spacing_Mark), which class 
includes such signs as the DEVANAGARI VOWEL SIGN AA. In 
draft-faltstrom-idnabis-tables-05, this is marked as "PVALID", which is 
of course incompatible with its use as a separator.

Do you recommend that TIBETAN SIGN RNAM BCAD be added to the exception 
list in section 2.2.2 of that draft, with category DISALLOWED?

This is a very serious and non-reversible step to take - if we get code 
into browsers that checks for U+0F7F as a disallowed character, it is 
very hard to get back to using it as a character in labels if we change 
our minds later.

                    Harald