[GHC] #5998: GHCi's :info to return all the visible instances, not just the ones imported from currently loaded files

[GHC]

#5998: GHCi's :info to return all the visible instances, not just the ones
imported from currently loaded files
---------------------------------+------------------------------------------
    Reporter:  errge             |       Owner:                  
        Type:  feature request   |      Status:  new             
    Priority:  normal            |   Milestone:                  
   Component:  GHCi              |     Version:  7.4.1           
    Keywords:  ghci :info        |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
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Comment(by simonmar):

 FYI, the commit that last changed this was

 commit b0d80aa3d908a6b9991920a5ac7fd1b437ecafd3
 {{{
 Author: simonpj at microsoft.com <unknown>
 Date:   Sat Aug 4 17:35:39 2007 +0000

     In GHCi, filter instances by what is in scope, not just by what is in
 scope unqualified

     Trac #1581 was doing too much filtering; it even filtered out intances
     defined in this very module!  The new rule shows more instances, but
     hopefully not to many.
 }}}

 I like the suggestion in comment:2.  Maybe this:

 {{{
     -- 32 other instances exist, but involve types that are not in scope.
     -- Use :info! to see all instances.
 }}}

     Furthermore I have moved the filtering out of TcRnDriver (where it
 does
     not belong) to InteractiveEval. And I've added a note to the
 documentation.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5998#comment:3>
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