Fixed bug in parsing files that begin with blank lines.

+ In Text.Pandoc.Shared: rewrote lineClump to parse EITHER a string
  of blank lines OR a string of nonblanks.  Removed code for parsing
  eof.
+ In Markdown and RST readers, use 'manyTill (... <|> lineClump) eof'
  instead of many, since lineClump no longer parses eof. 


git-svn-id: https://pandoc.googlecode.com/svn/trunk@1057 788f1e2b-df1e-0410-8736-df70ead52e1b

src/Text/Pandoc/Readers/Markdown.hs

@@ -142,14 +142,16 @@ parseMarkdown = do
   startPos <- getPosition
   -- go through once just to get list of reference keys
   -- docMinusKeys is the raw document with blanks where the keys were...
-  docMinusKeys <- many (referenceKey <|> lineClump) >>= return . concat
+  docMinusKeys <- manyTill (referenceKey <|> lineClump) eof >>= 
+                  return . concat
   setInput docMinusKeys
   setPosition startPos
   st <- getState
   -- go through again for notes unless strict...
   if stateStrict st
      then return ()
-     else do docMinusNotes <- many (noteBlock <|> lineClump) >>= return . concat
+     else do docMinusNotes <- manyTill (noteBlock <|> lineClump) eof >>= 
+                              return . concat
              st <- getState
              let reversedNotes = stateNotes st
              updateState $ \st -> st { stateNotes = reverse reversedNotes }

src/Text/Pandoc/Readers/RST.hs

@@ -86,7 +86,7 @@ parseRST = do
   startPos <- getPosition
   -- go through once just to get list of reference keys
   -- docMinusKeys is the raw document with blanks where the keys were...
-  docMinusKeys <- many (referenceKey <|> lineClump) >>= return . concat
+  docMinusKeys <- manyTill (referenceKey <|> lineClump) eof >>= return . concat
   setInput docMinusKeys
   setPosition startPos
   st <- getState

src/Text/Pandoc/Shared.hs

@@ -298,10 +298,8 @@ parseFromString parser str = do
 
 -- | Parse raw line block up to and including blank lines.
 lineClump :: GenParser Char st String
-lineClump = do
-  lns <- many1 (notFollowedBy blankline >> anyLine)
-  blanks <- blanklines <|> (eof >> return "\n")
-  return $ (unlines lns) ++ blanks
+lineClump = blanklines 
+          <|> (many1 (notFollowedBy blankline >> anyLine) >>= return . unlines)
 
 -- | Parse a string of characters between an open character
 -- and a close character, including text between balanced