[GHC] #7120: Markdown literate programming proposal

[GHC]

#7120: Markdown literate programming proposal
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    Reporter:  holzensp          |        Owner:                  
        Type:  feature request   |       Status:  closed          
    Priority:  normal            |    Component:  Compiler        
     Version:  7.5               |   Resolution:  invalid         
    Keywords:                    |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown    
    Testcase:                    |    Blockedby:                  
    Blocking:                    |      Related:  #4836           
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Comment(by Syzygies):

 I've been thinking about this for a while; I've been using my own literate
 preprocessor for years, which supports here documents and HTML markup, and
 I'm getting ready to upload it to Hackage. And I have experience with
 multiple HTML markup processors.

 Markup processors do local work translating to HTML, but generally still
 require an external script which adds headers and footers; this is in any
 case the more flexible approach. And any HTML markup processor worth
 considering will preserve existing HTML. So what one wants here is a first
 pass that formats the Haskell code, and exposes bare literate comments to
 a subsequent markup processor. There is absolutely no reason to impose a
 choice of markup processors. Modular design says don't!

 I don't like bird tracks (they look depressingly like 1980s email
 messages, and I'm old enough to have a backlog of unanswered messages from
 that era), so I use identation: Flush is comments, indented is code.
 However, GHC supports external literate preprocessors, so one can do
 anything one likes here. Whatever one does, the literate preprocessor
 should be able to output markup-ready HTML source.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7120#comment:5>
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