[GHC] #11579: Bug in parser for named Haddock chunks since GHC 8.0.1-rc1

[GHC]

#11579: Bug in parser for named Haddock chunks since GHC 8.0.1-rc1
-------------------------------------+-------------------------------------
        Reporter:  SimonHengel       |                Owner:
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.0.1-rc2
  (Parser)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by bgamari):

 * priority:  normal => high
 * component:  Compiler => Compiler (Parser)
 * milestone:   => 8.0.1


@@ -3,1 +3,1 @@
- {{{
+ {{{#!hs
@@ -11,1 +11,1 @@
- {{{
+ {{{#!hs

New description:

 Steps to reproduce:

 {{{#!hs
 -- Foo.hs
 module Foo where

 -- $bar some
 -- named chunk
 }}}

 {{{#!hs
 -- Extract.hs

 module Extract where
 import Prelude hiding (mod)
 import Data.Generics
 import DynFlags
 import FastString
 import GHC
 import GHC.Paths

 extractDocStrings :: IO [String]
 extractDocStrings = do
   extract . pm_parsed_source <$> do
     runGhc (Just libdir) $ do
       _ <- getSessionDynFlags >>= setSessionDynFlags . setHaddockMode
       guessTarget "Foo.hs" Nothing >>= setTargets . return
       [mod] <- depanal [] False
       parseModule mod
   where
     setHaddockMode :: DynFlags -> DynFlags
     setHaddockMode dynflags = (gopt_set dynflags Opt_Haddock)

     extract :: ParsedSource -> [String]
     extract m = [unpackFS s | HsDocString s <- everything (++) ([] `mkQ`
 return) m]
 }}}

 Expected result: {{{extractDocStrings}}} returns {{{" some\n named
 chunk"}}}

 Actual result: it returns {{{" some"}}} instead

--

Comment:

 Oh dear, this should get fixed.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11579#comment:3>
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