From ebd60c5cd0c3642c2d5542c0e126be0a4ec111d9 Mon Sep 17 00:00:00 2001
From: Łukasz Hanuszczak <lukasz.hanuszczak@gmail.com>
Date: Wed, 17 Jun 2015 23:43:31 +0200
Subject: Fix parsing of single line comments with broken up newlines.

---
 haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'haddock-api/src/Haddock/Backends')

diff --git a/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs b/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
index 70a69279..3ecfc7e7 100644
--- a/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
+++ b/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
@@ -47,13 +47,23 @@ chunk [] = []
 chunk str@(c:_)
     | isSpace c = chunk' $ span isSpace str
 chunk str
-    | "--" `isPrefixOf` str = chunk' $ span (not . (== '\n')) str
+    | "--" `isPrefixOf` str = chunk' $ spanToNewline str
     | "{-" `isPrefixOf` str = chunk' $ chunkComment 0 str
     | otherwise = chunk' $ head $ lex str
 
 chunk' :: (String, String) -> [String]
 chunk' (c, rest) = c:(chunk rest)
 
+spanToNewline :: String -> (String, String)
+spanToNewline [] = ([], [])
+spanToNewline ('\\':'\n':str) =
+    let (str', rest) = spanToNewline str
+    in ('\\':'\n':str', rest)
+spanToNewline ('\n':str) = ("\n", str)
+spanToNewline (c:str) =
+    let (str', rest) = spanToNewline str
+    in (c:str', rest)
+
 chunkComment :: Int -> String -> (String, String)
 chunkComment _ [] = ("", "")
 chunkComment depth ('{':'-':str) =
-- 
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