[GHC] #13887: Template Haskell pretty-printer doesn't parenthesize infix datatype names in data declarations

[GHC]

#13887: Template Haskell pretty-printer doesn't parenthesize infix datatype names
in data declarations
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  ak3n
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Template Haskell  |              Version:  8.0.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3717
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by ak3n):

 * differential:   => Phab:D3717


Comment:

 Oh, sorry, I was unclear, there were 417 unexpected failures with bad
 `pprName` version.

 The variant with proper `pprName' Applied` is fine.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13887#comment:6>
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