[Latingp] How should combining diacritic marks be handled?

Mats Dufberg mats.dufberg at iis.se
Mon Jan 16 16:21:01 UTC 2017

Dear all,

MSR2 contains a number of combining diacritic marks, e.g. U+0323 COMBINING DOT BELOW. It might be that we find that some of the languages that should be supported requires that code point in combination with, say, "n", i.e. "U+006E U+0323". Let us assume that there is no pre-composed equivalent code point.

We can then justify the inclusion of U+0323. Will then the Integration Panel accept that code point in any context, or just in the specific context?

If the IP requires that we justify combining diacritic marks for every context it will be allowed for, then we have to go language by language to find all combinations to support.

If the IP accepts to include a combining diacritic mark for any context as long as it is justified for one language, then we can go code point by code point as long as we can find justification for all Latin code points in MSR2 and we assume no more code points are needed.

If the purpose of our work is to create a Latin IDN table that supports all listed languages (EGIDS value 4 or 5 as decided) then I cannot see how we can achieve that without inspecting all those languages.


Mats Dufberg
DNS Specialist, IIS
Mobile: +46 73 065 3899

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