Re: FCD and Collation

From: Markus Scherer <>
Date: Mon, 11 Feb 2013 17:13:58 -0800

I would not revise FCD itself. For a number of processes, it is sufficient
as is. For collation it's not.

About the Tibetan precomposed vowels:

For the LDML spec, I submitted a CLDR ticket this morning:

For UTS #10 section 6.5, I just now submitted an error report on

About the other issues: I think that's up to implementations. If an
implementation wants to avoid the NFD step then it needs to build more data
or add checks for problematic input, or both. The spec should not go into
that detail.

For ICU, we have a statement in the User Guide that overlaps between
contractions and decomposition mappings are not supported, and we have a
ticket for trying to fix this by building more data.

Received on Mon Feb 11 2013 - 19:18:17 CST

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