From 77ed6a63df3d2653401f1869f116c8854021a71e Mon Sep 17 00:00:00 2001
From: Simon Hengel <sol@typeful.net>
Date: Sun, 2 Nov 2014 10:13:00 +0800
Subject: Add support for markdown links (closes #336)

---
 .../src/Documentation/Haddock/Parser/Util.hs           | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

(limited to 'haddock-library/src/Documentation/Haddock/Parser')

diff --git a/haddock-library/src/Documentation/Haddock/Parser/Util.hs b/haddock-library/src/Documentation/Haddock/Parser/Util.hs
index ef2af140..eff7dfc6 100644
--- a/haddock-library/src/Documentation/Haddock/Parser/Util.hs
+++ b/haddock-library/src/Documentation/Haddock/Parser/Util.hs
@@ -14,6 +14,7 @@ module Documentation.Haddock.Parser.Util (
   unsnoc
 , strip
 , takeUntil
+, removeEscapes
 , makeLabeled
 , takeHorizontalSpace
 , skipHorizontalSpace
@@ -49,14 +50,15 @@ makeLabeled :: (String -> Maybe String -> a) -> String -> a
 makeLabeled f input = case break isSpace $ removeEscapes $ strip input of
   (uri, "")    -> f uri Nothing
   (uri, label) -> f uri (Just $ dropWhile isSpace label)
-  where
-    -- As we don't parse these any further, we don't do any processing to the
-    -- string so we at least remove escape character here. Perhaps we should
-    -- actually be parsing the label at the very least?
-    removeEscapes "" = ""
-    removeEscapes ('\\':'\\':xs) = '\\' : removeEscapes xs
-    removeEscapes ('\\':xs) = removeEscapes xs
-    removeEscapes (x:xs) = x : removeEscapes xs
+
+-- | Remove escapes from given string.
+--
+-- Only do this if you do not process (read: parse) the input any further.
+removeEscapes :: String -> String
+removeEscapes "" = ""
+removeEscapes ('\\':'\\':xs) = '\\' : removeEscapes xs
+removeEscapes ('\\':xs) = removeEscapes xs
+removeEscapes (x:xs) = x : removeEscapes xs
 
 takeUntil :: ByteString -> Parser ByteString
 takeUntil end_ = dropEnd <$> requireEnd (scan (False, end) p) >>= gotSome
-- 
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