LikelySubtags and Default Content

1. First make sure that you do Update Language/Script/Region Subtags first
2. Run GenerateLikelySubtags with VM argument -DCLDR_DIR set to your cldr directory to generate the likely subtag data AND the default content locales.
   1. If you are trying to debug, add the VM argument -DGenerateLikelySubtagsDebug
3. Input data:
   1. Data comes from territory/language information in supplemental data.
      1. However, it is supplemented by LANGUAGE_OVERRIDES in GenerateLikelySubtags.java
         1. If there is no territory/language information in supplemental data for a language, add it to LANGUAGE_OVERRIDES.
         2. If the mapping changes when it shouldn’t (there are some special cases), add to LANGUAGE_OVERRIDES.
4. Output:
   1. Creates {CLDR_DIR}/../Generated/cldr/supplemental/likelySubtags.xml and {CLDR_DIR}/../Generated/cldr/supplemental/supplementalMetadata.xml
   2. Diff with {CLDR_DIR}/common/supplemental/likelySubtags.xml and {CLDR_DIR}/common/supplemental/supplementalMetadata.xml
   3. Be very careful to diff everything and check for errors.
      1. Watch especially for backwards incompatible changes; that is, changes rather than just additions.
      2. Look at the above to handle that with LANGUAGE_OVERRIDES.
   4. Run tests, fix input data, and iterate as necessary.
      1. Copy into the svn workspace and commit.