breaks entirely on MXIDs with /

[bwindels]

trying to linkify @/hoc/roman:matrix.org from matrix.to just resets the input field but does nothing else. console is empty

[MayeulC]

I was a bit dubious, but this is allowed by the spec

[bwindels]

we should just url encode the username if we're not already, and also handle those correctly because https://matrix.to/#/%40%2Fhoc%2Froman%3Amatrix.org has exactly the same result.