This commit improves the best locale match algorithm by prioritizing
closer matches and add many new tests verifying that this works as
expected.
In order to do this, new information had to be added to the language
database, which was extended with it and updated to use the latest
Unicode CLDR data and latest Windows 11 locale list.
Further, add a set of scripts for maintaining the language database up
to date and a GitHub workflow `genlangdb.yml` which can be run manually
to regenerate the wxWidgets language-related source and header files
from the underlying Windows and Unicode data. It produces 2 artifacts:
- wxLanguageDatabaseDist.zip allows to easily update the
language-related files in the wxWidgets repository by simply copying
all files.
- the normal workflow log and wxLanguageDatabaseLog.zip allow to check
all temporary files of the regeneration process and to detect
potential issues, before the language-related files are actually
replaced by the new ones.
Finally, fix wxUILocaleImplName::GetPreferredUILanguages: Under Windows
10 and above the Windows API function ::GetUserPreferredUILanguages()
returns only the primary UI language plus US English. Additional
preferred UI languages installed by the user are ignored, so instead of
using this function read the list of user preferred languages from the
Windows registry.
Closes#24855.
Fix some issues and streamline regeneration process:
- A few glitches (like duplicate language symbols, wrong Windows
language ids etc) were fixed.
- Scripts were added to allow to regenerate the list of supported
locales from the list of known Windows locales.
- Version info when language symbols became available was added to the
documentation of the language symbol enum.
- Synonyms are no longer hard-coded in the script genlang.py.
See #23453.
Closes#23437.
Ulrich Telle