Highlighting unicode operators as other operators would be good. [This PR](https://github.com/neovimhaskell/haskell-vim/pull/106) solves it.
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unclechu commentedon Sep 11, 2022
I decided to maintain my own fork since the status quo doesn’t seem to change any time soon (the merge request was created in 2018).
The fork with Unicode support: https://github.com/wenzel-hoffman/haskell-with-unicode.vim
Closing this request.