[GHC] #3452: Show type of most recent expression in GHCi

[GHC]

#3452: Show type of most recent expression in GHCi
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        Reporter:  ozy               |            Owner:
            Type:  feature request   |           Status:  patch
        Priority:  lowest            |        Milestone:  7.6.2
       Component:  GHCi              |          Version:  6.10.4
      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 leroux):

 Instead of completely removing the following error.
 {{{
 λ: id

 <interactive>:2:1:
     No instance for (Show (a0 -> a0)) arising from a use of `print'
     Possible fix: add an instance declaration for (Show (a0 -> a0))
     In a stmt of an interactive GHCi command: print it
 }}}

 I think it would be saner and possibly better to just append the {{{:t}}}
 of {{{it}}} to the preceding error message.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3452#comment:14>
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