diff options
| -rw-r--r-- | src/Text/Pandoc/Readers/LaTeX/Parsing.hs | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/src/Text/Pandoc/Readers/LaTeX/Parsing.hs b/src/Text/Pandoc/Readers/LaTeX/Parsing.hs index 313aa6c51..dab4d334e 100644 --- a/src/Text/Pandoc/Readers/LaTeX/Parsing.hs +++ b/src/Text/Pandoc/Readers/LaTeX/Parsing.hs @@ -680,28 +680,25 @@ grouped parser = try $ do -- {{a,b}} should be parsed the same as {a,b} try (grouped parser <* egroup) <|> (mconcat <$> manyTill parser egroup) -braced' :: PandocMonad m => LP m Tok -> Int -> LP m [Tok] -braced' getTok n = - handleEgroup <|> handleBgroup <|> handleOther - where handleEgroup = do - t <- symbol '}' - if n == 1 - then return [] - else (t:) <$> braced' getTok (n - 1) - handleBgroup = do - t <- symbol '{' - (t:) <$> braced' getTok (n + 1) - handleOther = do - t <- getTok - (t:) <$> braced' getTok n +braced' :: PandocMonad m => LP m Tok -> LP m [Tok] +braced' getTok = symbol '{' *> go (1 :: Int) + where + go n = do + t <- getTok + case t of + Tok _ Symbol "}" + | n > 1 -> (t:) <$> go (n - 1) + | otherwise -> return [] + Tok _ Symbol "{" -> (t:) <$> go (n + 1) + _ -> (t:) <$> go n braced :: PandocMonad m => LP m [Tok] -braced = symbol '{' *> braced' anyTok 1 +braced = braced' anyTok -- URLs require special handling, because they can contain % -- characters. So we retonenize comments as we go... bracedUrl :: PandocMonad m => LP m [Tok] -bracedUrl = bgroup *> braced' (retokenizeComment >> anyTok) 1 +bracedUrl = braced' (retokenizeComment >> anyTok) -- For handling URLs, which allow literal % characters... retokenizeComment :: PandocMonad m => LP m () |