Great. Thanks for both translations.
- "Simple Locale Switcher Options" [preferences-os.win.dtd] (Maybe it's for Windows only?)
Yes, windows only. You can see here:
the different wording for Options/Preferences used upstream in Arabic Firefox (prefWindow.titleWin and prefWindow.title)
- "Language packs provide additional languages for the interface of Firefox and extensions" [extensions.dtd]
- "Learn more about language packs" [extensions.dtd]
Both of them are visible in the Language panel of the Add-ons Manager only when no languages packs are found installed.
BTW, I can't see the translated extension description in the extensions pane in the Add-ons Manager. I see the English one only. I don't see any string from "meta.properties". Is this because I am using the testing extension?
It's expected. The strings in the meta.properties are integrated manually: they need be added to the install.manifest file of the add-on. They will be translated in the public release.