[GHC] #10785: ghc-pkg appends colon to db path when piped/redirected

[GHC]

#10785: ghc-pkg appends colon to db path when piped/redirected
-------------------------------------+-------------------------------------
              Reporter:  jgertm      |             Owner:  jgertm
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  ghc-pkg     |           Version:  7.10.2
              Keywords:  colon pipe  |  Operating System:  Unknown/Multiple
  redirect ghc-pkg list              |
          Architecture:              |   Type of failure:  Other
  Unknown/Multiple                   |
             Test Case:              |        Blocked By:
              Blocking:              |   Related Tickets:
Differential Revisions:              |
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 Quite simple. Compare the first line of output from
 {{{#!sh
 ghc-pkg list
 ghc-pkg list | head
 }}}

 In the second command's output, a colon gets appended at the end of the
 first line, compared to the first command. This is generally undesired
 behaviour, since the intent of redirection is to further process the
 output of the original command.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10785>
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