diff options
Diffstat (limited to 'src/Haddock/Parse.y')
| -rw-r--r-- | src/Haddock/Parse.y | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/Haddock/Parse.y b/src/Haddock/Parse.y index 4a0f8f99..e36e8416 100644 --- a/src/Haddock/Parse.y +++ b/src/Haddock/Parse.y @@ -129,14 +129,21 @@ makeExample prompt expression result = -- whitespace in expressions, so drop them result' where - -- drop trailing whitespace from the prompt, remember the prefix + -- 1. drop trailing whitespace from the prompt, remember the prefix (prefix, _) = span isSpace prompt - -- drop, if possible, the exact same sequence of whitespace characters - -- from each result line - result' = map (tryStripPrefix prefix) result + + -- 2. drop, if possible, the exact same sequence of whitespace + -- characters from each result line + -- + -- 3. interpret lines that only contain the string "<BLANKLINE>" as an + -- empty line + result' = map (substituteBlankLine . tryStripPrefix prefix) result where tryStripPrefix xs ys = fromMaybe ys $ stripPrefix xs ys + substituteBlankLine "<BLANKLINE>" = "" + substituteBlankLine line = line + -- | Remove all leading and trailing whitespace strip :: String -> String strip = dropWhile isSpace . reverse . dropWhile isSpace . reverse |