To provide a better user experience entering numbers, we want to allow '.' (dot) as the decimal separator even when it is not the one for the current locale (actually both will bw allowed). The idea is to allow fast input using the num key pad regardless of the locale. This is what MS-Excel does, for example.
We're are looking for a clean and generic way, without having to hack into NumberCellInput, NumberPropertyEditor, DoublePropertyEditor...
Should this be a request for enhancement?