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Having trouble when try to trigger text editor from ghci

I'm new to Haskell. From some video, I see people can trigger text editor from ghci. It says if you don't set up the default text editor, it will hint you to use set editor command. But in my case, when I input

edit

It gives me an error saying

error: Variable not in scope: edit

How can I solve it? I'm using Haskell stack 8.0.2

Solution

  • ghci command all begin with :. Try :edit instead.