Right, that’s the Right Thing ™ but I’m speculating it will be more expedient to first patch the problem by making sure that keyboard just always has a period. Properly internationalizing Beeminder, even for such a seemingly small thing as radix, is just not on the roadmap very soon.
Btw, this is @apb’s code so he may be able to tell us if the keyboard thing sounds like an easy fix. Also it’s open source – https://github.com/beeminder/beeswift – if anyone else wants to make a pull request for this!