Copy/pasting code from GitLab

(This isn't specifically a migration issue, but then it's not a GHC issue either: it's about using GitLab.)

If I copy/paste code from GitLab comments, it loses linebreaks/indenting and instead gets invisible extra characters that give GHC severe indigestion. They're presumably some sort of markup.

For example copy from this

class C a where
  meth :: a -> Bool

instance C Int where
  meth = (>= 0)

pastes as per attachedAnnoyingPaste.hs

(Of course pasting it back here works perfectly.)

Copy/paste from Trac worked fine; copy/paste from StackOverflow works fine.