From: Mark Davis


Subject: Change properties to be Contributory Properties

Date: January 15, 2016

In the http://unicode.org/reports/tr44/#Property_Index, the  following properties should be moved to Contributory. They are used in internal implementations of normalization, but are not normally surfaced in APIs. Moreover, if they are surfaced, they are likely to cause confusion. For example, the Decomposition Mapping can be easily confused with mappings to NFD and NFKC.

  1. Decomposition_Mapping
  2. Composition_Exclusion
  3. Full_Composition_Exclusion