syntax highlighting stops after using list comprehension

[Da-Viper]

for example something like this to get the above average numbers

aboveAverage :: (Ord a, Fractional a) => a -> a -> a -> Int
aboveAverage x y z  = length [a| a <- [x,y,z], a > average x y z ]

after a code like this syntax highlighting does not work anymore

[sheaf]

Hi, thanks for the bug report.

The problem is that quasi-quotation syntax and list comprehension syntax ambiguously overlap. This means you have to write list comprehension syntax using spaces:

length [ a | a <- [x,y,z], a > average x y z ]

You'll notice the syntax highlighting that GitHub uses exhibits the same issue:

length [a| a <- [x,y,z], a > average x y z ]

f :: x -> x
f a = a -- this isn't highlighted because the above list comprehension is interpreted as a quasi-quote which has not been terminated

[Da-Viper]

@sheaf thanks it fixed it just started learning haskell and i have not heard of the former