Missing support for unboxed tuples?

[TerrorJack]

Minimum example:

{-# LANGUAGE MagicHash #-}
{-# LANGUAGE UnboxedTuples #-}

f :: (# Int, Int #) -> Int
f t = case t of
    (# x, _ #) -> x

hindent-5.2.3 reports error on this. hlint recognizes it though, and they share a same version of haskell-src-exts in the same stackage nightly snapshot.

Does hindent already implement formatting unboxed tuples? Or am I missing anything here? Thanks!

[sighingnow]

You need enable the extension UnboxedTuples explicitly when format this code. Please try

hindent -XUnboxedTuples <your haskell  file>

Since the # symbol may conflict with the # operator in lens, we disable the extension UnboxedTuples designedly.

[TerrorJack]

@sighingnow Thanks for the remainder. With hindent -XUnboxedTuples it works indeed, however it formats patterns like (# x, y #) into (#x, y#). After that hindent will fail to parse the formatted output.

[sighingnow]

Thanks for your reporting, the bug have been fixed now.

[sighingnow]

@TerrorJack sorry for closing the this issue without pushing update to this repo yesterday. Please try with the latest code in master branch and this issue should be indeed fixed.