Muse writer: escape strings starting with space

src/Text/Pandoc/Writers/Muse.hs

@@ -400,6 +400,10 @@ isHorizontalRule s =
   ((length xs) >= 4) && null ys
   where (xs, ys) = span (== '-') s
 
+startsWithSpace :: String -> Bool
+startsWithSpace (x:_) = isSpace x
+startsWithSpace [] = False
+
 fixOrEscape :: Bool -> Inline -> Bool
 fixOrEscape sp (Str "-") = sp
 fixOrEscape sp (Str ";") = not sp
@@ -407,7 +411,7 @@ fixOrEscape _ (Str ">") = True
 fixOrEscape sp (Str s) = (sp && (startsWithMarker isDigit s ||
                                 startsWithMarker isAsciiLower s ||
                                 startsWithMarker isAsciiUpper s))
-                         || isHorizontalRule s
+                         || isHorizontalRule s || startsWithSpace s
 fixOrEscape _ Space = True
 fixOrEscape _ SoftBreak = True
 fixOrEscape _ _ = False

test/Tests/Writers/Muse.hs

@@ -112,6 +112,15 @@ tests = [ testGroup "block elements"
                             , " <verbatim></verbatim> :: second description"
                             , " <verbatim></verbatim> :: third description"
                             ]
+              , "definition list terms starting with space" =:
+                definitionList [ (text "first definition", [plain $ text "first description"])
+                               , (space <> str "foo", [plain $ text "second description"])
+                               , (str " > bar", [plain $ text "third description"])
+                               ]
+                =?> unlines [ " first definition :: first description"
+                            , " <verbatim></verbatim> foo :: second description"
+                            , " <verbatim></verbatim> > bar :: third description"
+                            ]
               ]
             -- Test that lists of the same type and style are separated with two blanklines
             , testGroup "sequential lists"