I am using Vim 8.0.
I often pepper my Haskell code with undefined stub functions to be filled in later. Note that undefined is a valid keyword in Haskell
add :: Int -> Int -> Int add a b = undefined
What I'd like to do, while in Haskell mode, is to make the word
undefined word look like an eye-sore to remind me that implementations are still not complete.
In particular, I would like the background of
undefined to be pink and
the foreground color of the text to be, say, black
How do I go about doing this?