On 07/22/2016 02:34 AM, Bryan Richter wrote:
> Just wanted to share a git hook I'm using to automatically apply hlint
> to Haskell files that I'm commiting.
>
> First all I'm using the existing pre-commit example that git provides
> (.git/hooks/pre-commit.sample). Just copy that file to
> .git/hooks/pre-commit and `chmod 755` it.
>
> Then I chained an hlint check to the whitespace check:
>
> --- .git/hooks/pre-commit.sample 2016-07-14 09:56:25.509776550 +0300
> +++ .git/hooks/pre-commit 2016-07-22 12:23:12.997344972 +0300
> @@ -46,4 +46,11 @@
> fi
>
> # If there are whitespace errors, print the offending file names and fail.
> -exec git diff-index --check --cached $against --
> +if git diff-index --check --cached $against --
> +then
> + # Otherwise, if Haskell files have changed, run hlint on them.
> + changedHaskell=$(git diff-index --diff-filter=ACMR --numstat --cached
> $against -- '*.hs' | cut -f3)
> + exec ${changedHaskell:+hlint -XQuasiQuotes $changedHaskell}
> +else
> + exit 1
> +fi
>
> Honestly I bet there's a nicer way to get the list of changed Haskell
> files, but git is weird.
>
>
> I have vim set up to automatically run hlint whenever I save a file (via syntastic I believe), but I don't know how to make that use the -XQausiQuotes argument.
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