will always show "de-DE". I can configure Google Chrome to display "de-CH" by installing the language and setting it as the default language using the settings tab. Is there a similar feature in CEF to "install" the "de-CH" locale?
There does not appear to be a locales pak file for de-CH specifically. You can run with the `--lang=de` command-line flag on Windows/macOS or set the appropriate LANG/LC_* environment variables on Linux. You can also configure CefSettings.locale or CefSettings.accept_language_list. See documentation on those values.
The major problem I have with using something like `--lang=de` is that numbers are formatted differently in de-DE and de-CH. I have set the CefSettings.locale and CefSettings.accept_language_list and the language settings of my operating system (Windows) to de-CH, but the number one thousand is displayed as "1.000" instead of "1'000" in CEF.