Jan StępieńI made a thing. Please do not hesitate to point me in the direction of more forms to fill. https://wtf-8.xn--stpie-k0a81a.com
Haelwenn /элвэн/ 
@jstepien Forgot which one it was but there's some where compose and dead-keys do not work in JS-heavy text entries because somehow they grab keys instead of characters.
mirabilos@mirabilos @jstepien Well I use a slightly modified US layout so not sure if it managed the purely key→symbol part properly, but that would be kind of surprising as it would be broken for so many people, including macbooks (as they have a slightly different layout for some reason…).