[GHC] #11392: Decide and document how semicolons are supposed to work in GHCi

[GHC]

#11392: Decide and document how semicolons are supposed to work in GHCi
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.4.1
       Component:  GHCi              |              Version:  7.10.3
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #10663, #7625     |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by jkiefer):

 This looks interesting, but it seems to mostly already be resolved. With
 #10663, GHCi simply rejects multiple imports separated by semicolons. I'm
 not sure when this got fixed, but testing with GHCi 8.0.2 the parser state
 issue seems to have been fixed:

 {{{
 λ> data Infix a b = a :@: b; infixl 7 :@:
 λ> a

 <interactive>:2:1: error: Variable not in scope: a
 }}}

 Is there any more to be done?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11392#comment:5>
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