[GHC] #4836: literate markdown not handled correctly by unlit

[GHC]

#4836: literate markdown not handled correctly by unlit
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        Reporter:  guest                      |            Owner:
            Type:  bug                        |           Status:  new
        Priority:  low                        |        Milestone:  7.6.2
       Component:  Compiler                   |          Version:  7.0.1
      Resolution:                             |         Keywords:
Operating System:  Unknown/Multiple           |     Architecture:
 Type of failure:  GHC rejects valid program  |  Unknown/Multiple
       Test Case:                             |       Difficulty:  Unknown
        Blocking:                             |       Blocked By:
                                              |  Related Tickets:  #7120
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Comment (by elliottt):

 I've had success using this with octopress, with this page as an example:

 https://github.com/elliottt/elliottt.github.com/blob/source/source/_posts/2013-02-19
 -serenade-in-haskell.markdown

 I used ```haskell as the starting block, so that github would highlight
 the haskell blocks, though ``` also works.

 Do you know if BlogLiterally will process the fenced code blocks?  I know
 that pandoc is happy to process them, so I figured that it should just
 work with anything that depends on that.  Additionally, bird tracks in
 markdown are for quoted blocks, not code, so if that's how BlogLiterally
 is expecting to find the code, that could be a problem.

 Does BlogLiterally process .lhs files?  If so, that could also be a
 problem, as markdown processing requires the .md extension, instead of
 .lhs.  The reason for this is that .lhs processing allows CPP macros, but
 in markdown the # means a section header.  The different extension signals
 different flags to unlit.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4836#comment:15>
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