Proposal to Remove Some Hira/Kata From Script_Extensions

The Script_Extensions property values for some characters contain Hiragana, Katakana, or Bopomofo, when they should only contain Han. The Unicode Technical Committee is considering removing the Hiragana, Katakana, or Bopomofo in these cases, and would like feedback as to any that should not be changed, and any others that should be. Public Review Issue #316 contains details of a proposal to remove these items from Script_Extensions.

For information about how to discuss this Public Review Issue and how to supply formal feedback, please see the feedback and discussion instructions.

Reconciling Script and Script_Extensions Character Properties

The Unicode Technical Committee would like to eliminate some ambiguity in the assignment of the character properties Script and Script_Extensions and is seeking input from developers.

There are currently a small number of characters whose Script value is explicit (neither Common nor Inherited) and whose Script_Extensions value set has more than one value (a “diverse” value set). These characters are not typical; most characters with a diverse Script_Extensions value set have a Script value of either Common or Inherited. Possible policies and solutions are discussed and outlined in the proposal:

PRI #277 Reconciling Script and Script_Extensions Character Properties