[GHC] #12146: syntax repair suggestion is too eager to suggest TemplateHaskell

[GHC]

#12146: syntax repair suggestion is too eager to suggest TemplateHaskell
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        Reporter:  j.waldmann        |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  newcomer
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by j.waldmann):

 * GHC could state that an module header, import declaration or top-level
 declaration was expected.
 * GHC should not make any suggestion here.

 Error messages from the compiler should use exact wording from the
 language specification
 [https://www.haskell.org/onlinereport/haskell2010/haskellch5.html#x11-990005.1].
 I guess "naked" is not in there.

 For reference:
 {{{
 ipmort java.util.*; class Foo { }
 Foo.java:1: error: class, interface, or enum expected

 suing System.Linq; class Foo { }
 Foo.cs(1,0): error CS1525: Unexpected symbol `suing'
 }}}
 but the top-level declaration syntax of these languages is easier.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12146#comment:2>
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