Hi,

Referring to the simplified lookup (http://cal10n.qos.ch/manual.html#simplifiedLookup), I think this has been simplified too far.

Firstly, I think your simplification by removing the default properties file is justified because it makes it easier to test the robustness of the application, which is a Good Thing.  The decision may be controversial because it means that translations have to be done to completion or not at all; partially complete translations will fail.  But it is consistent with Cal10n's stated objective of supporting verifiably self-consistent resource bundles.

However, there is another issue that I am unhappy about.  Java's Locale allows language, country and region to be specified.  You have removed the region (or not documented it).  Although the region is not often used, I think it is necessary and should be supported.