@DenisTRUFFAUT For JavaScript, set the Unicode flag:
/[\p{L} ]+/gmu
https://t.co/xqHQx1UDrR
The Wikimedia foundation has made a @Wikipedia app for @KaiOStech available and open-sourced it (https://t.co/81PV8cQZAo), including the market research (https://t.co/3tHBWDzG6U [PDF]) that led to the decision to do so. It works very well, read more here: