[Hackage] #478: allow comments on any line, don't require '.' for blank lines

[Hackage]

#478: allow comments on any line, don't require '.' for blank lines
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  Reporter:  duncan         |        Owner:           
      Type:  enhancement    |       Status:  new      
  Priority:  normal         |    Milestone:  Cabal-1.8
 Component:  Cabal library  |      Version:  1.6.0.1  
  Severity:  normal         |   Resolution:           
  Keywords:                 |   Difficulty:  unknown  
Ghcversion:                 |     Platform:           
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Comment (by creswick):

 The error output for this could at least mention that comments aren't
 allowed at the end of lines.

 There is also an inconsistency in the syntax for build-depends and some
 other lists (eg: extra-source-files).  Comments at the end of a line in an
 extra-source-files list do not cause a parse error, yet they do when added
 to the end of a line in a build-depends list.

 In my opinion, the simplest solution is to require that -- be escaped.
 (eg: \-\-, or \-- ) when it is not used as a comment delimiter.  However,
 I say that without having any experience with the cabal source, so I can't
 judge the difficulty.  I'm also a newbie to haskell, so perhaps this isn't
 such a great idea...

 I'd be willing to start working on such a fix if someone with more
 background than I can suggest one :)

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/478#comment:2>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects