@@ -839,7 +839,8 @@ schemes = Set.fromList
839isURI :: String -> Bool
839isURI :: String -> Bool
840isURI = maybe False hasKnownScheme . parseURI
840isURI = maybe False hasKnownScheme . parseURI
842− hasKnownScheme = (`Set.member` schemes) . filter (/= ':') . uriScheme
842+ hasKnownScheme = (`Set.member` schemes) . map toLower .
843+ filter (/= ':') . uriScheme
845--- Squash blocks into inlines
846--- Squash blocks into inlines