[GHC] #9776: -frule-check flag not recognized without parameter

[GHC]

#9776: -frule-check flag not recognized without parameter
-------------------------------------+-------------------------------------
       Reporter:  jstolarek          |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  Driver             |                 Version:  7.9
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Moderate (less     |         Type of failure:  Incorrect
  than a day)                        |  warning at compile-time
     Blocked By:                     |               Test Case:
Related Tickets:                     |                Blocking:
                                     |  Differential Revisions:
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 {{{
 $ ghc Foo.hs -frule-check
 ghc: on the commandline: unrecognised flag: -frule-check
 Usage: For basic information, try the `--help' option.
 }}}

 That error message is confusing. `-frule-check` is a valid flag, it's just
 being used incorrectly. It should be followed by a parameter:

 {{{
 $ ghc Foo.hs -frule-check ruleFoo
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9776>
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