-ddump-splices pretty-prints LambdaCase nonsensically

{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE TemplateHaskell #-}
{-# OPTIONS_GHC -ddump-splices #-}
module Bug where

$([d| f :: Bool -> ()
      f = \case True  -> ()
                False -> ()
    |])

$ /opt/ghc/8.4.3/bin/ghci Bug.hs
GHCi, version 8.4.3: http://www.haskell.org/ghc/  :? for help
Loaded GHCi configuration from /home/ryanglscott/.ghci
[1 of 1] Compiling Bug              ( Bug.hs, interpreted )
Bug.hs:(6,3)-(9,6): Splicing declarations
    [d| f_a1xr :: Bool -> ()
        f_a1xr
          = \case
              True -> ()
              False -> () |]
  ======>
    f_a48E :: Bool -> ()
    f_a48E
      = \case
          \ True -> GHC.Tuple.()
          \ False -> GHC.Tuple.()
Ok, one module loaded.

Notice the use of \ True and \ False. Those patterns should not be preceded with backslashes.

Trac metadata

Trac field	Value
Version	8.4.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Template Haskell
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