[GHC] #10663: ghci ignores stuff after an import command and a semicolon

[GHC]

#10663: ghci ignores stuff after an import command and a semicolon
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        Reporter:  rwbarton          |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  GHCi              |                 Version:  7.10.1
      Resolution:                    |                Keywords:  newcomer
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  GHC accepts       |  Unknown/Multiple
  invalid program                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by osa1):

 * cc: osa1 (added)


Comment:

 I'm trying to understand expected syntax here. It seems like I can only
 put expressions after the first semicolon, other GHCi commands don't work:

 {{{
 λ:6> import Data.List; x; x + y
 λ:7> import Data.List; import Data.Char

 <no location info>: parse error in import declaration
 λ:8> let x = 10
 λ:9> x; x; x

 <interactive>:9:2: parse error on input ‘;’
 λ:10> let y = 10; y

 <interactive>:10:14:
     parse error (possibly incorrect indentation or mismatched brackets)
 λ:11> import Data.Char; x
 λ:12>
 }}}

 Also, I can't see anything related with semicolons in user manual "Using
 GHCi"
 section(https://downloads.haskell.org/~ghc/latest/docs/html/users_guide
 /interactive-evaluation.html) so it seems to me like this semicolon
 behavior is not intended and just a side effect of the used parser.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10663#comment:1>
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