If you look at the vector handler in his code, he is using blue Monday sanitizer and doing some "replaceAll".
So I think there may be some useless data in the vector, but that may not be a issue since it is coming from multiple sources (for simple question at least)
maybe not the distinction you meant but the UK is still in Europe (the continent) and to me, European is a word based on location not membership of the European Union (which the UK left)
I see they do printed keycaps, is there any company that would allow having custom see-through forms in the keycaps that would support keyboard lights? E.g., in addition to QW letters that glow in the dark you could add your custom symbols that would also help you learn all the custom keybinds you've made
WASD Keyboards [1] (also in California, BTW) offers custom-printed whole sets and individual keys in OEM profile Cherry keycaps.
XVX [2] offers sets of four in Cherry profile
.. and I'm sure there are more options out there.
Then there's the whole "artisan" community, which sculpt and cast individual keycaps in various designs and shapes, more for looks and collecting than for typing on. I've seen group buys of tooling for making these.
- I would use this extension for reading little movies/series analysis during the video (imagine Alt Shift X doing this stuff for series on Netflix or whatever, could be very nice).
So I think there may be some useless data in the vector, but that may not be a issue since it is coming from multiple sources (for simple question at least)