Title: Corrigenda should provide comprehensive data changes
Author: Markus Scherer
Date: 2011-jan-13


http://www.unicode.org/versions/corrigendum8.html provides Changes to the Content of UnicodeData.txt for a Bidi_Class correction. However, there are dozens of properties, and dozens of .txt files, in the Unicode Character Database. Some properties are derived from others, some files present properties in other forms (e.g., DerivedBidiClass.txt), and some properties should be synchronized with others for consistent behavior.


When a corrigendum changes property values, it should spell out all of the changes to derived files and dependent property values. If no other value needs to be changed, that should be stated.