[GHC] #8642: Allow GHCi to print non-pretty forms of things.

[GHC]

#8642: Allow GHCi to print non-pretty forms of things.
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        Reporter:  Fuuzetsu          |            Owner:
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  GHCi              |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by hvr):

 Btw, line-breaking of compiler message can be suppressed somewhat by using
 `-dppr-cols999`, however that doesn't seem to apply to the pretty-printing
 of `:info` or `:type`.

 However, the major parsing/interaction issue I have encountered while
 working on the Emacs integration is the shared I/O on stdin/stdout between
 GHCi's and the interpreted/evaluated code output (interleaved output on
 STDOUT, as well as code trying to read from STDIN).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8642#comment:2>
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