[GHC] #15326: Add option to disable error message expression context (the 'In the expression' things)

[GHC]

#15326: Add option to disable error message expression context (the 'In the
expression' things)
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        Reporter:  dramforever       |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * keywords:   => newcomer


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15326#comment:3>
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