[GHC] #15236: GHCi pretty-prints (->)'s fixity poorly

6 Jun 2018

      #15236: GHCi pretty-prints (->)'s fixity poorly
-------------------------------------+-------------------------------------
           Reporter:  RyanGlScott    |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Consider the following GHCi session:

 {{{
 $ ghci
 GHCi, version 8.4.3: http://www.haskell.org/ghc/  :? for help
 Loaded GHCi configuration from /home/rgscott/.ghci
 λ> :i (->)
 data (->) (a :: TYPE q) (b :: TYPE r)   -- Defined in ‘GHC.Prim’
 infixr 0 `(->)`
 <instances elided>
 }}}

 Notice that it prints:

 {{{
 `(->)`
 }}}

 Which is totally wrong. This should simply be `->`. Patch incoming.

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15236
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