From 615a99c2c20782daae5de38854025e2d40d85f29 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 14 Jan 2018 15:10:13 -0800
Subject: RST reader: add aligned environment when needed in math.
rst2latex.py uses an align* environment for math in
`.. math::` blocks, so this math may contain line breaks.
If it does, we put the math in an `aligned` environment
to simulate rst2latex.py's behavior.
Closes #4254.
---
src/Text/Pandoc/Readers/RST.hs | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
(limited to 'src/Text/Pandoc')
diff --git a/src/Text/Pandoc/Readers/RST.hs b/src/Text/Pandoc/Readers/RST.hs
index ba5a24f8f..49cc3018c 100644
--- a/src/Text/Pandoc/Readers/RST.hs
+++ b/src/Text/Pandoc/Readers/RST.hs
@@ -972,11 +972,16 @@ extractCaption = do
legend <- optional blanklines >> (mconcat <$> many block)
return (capt,legend)
--- divide string by blanklines
+-- divide string by blanklines, and surround with
+-- \begin{aligned}...\end{aligned} if needed.
toChunks :: String -> [String]
toChunks = dropWhile null
- . map (trim . unlines)
+ . map (addAligned . trim . unlines)
. splitBy (all (`elem` (" \t" :: String))) . lines
+ -- we put this in an aligned environment if it contains \\, see #4254
+ where addAligned s = if "\\\\" `isInfixOf` s
+ then "\\begin{aligned}\n" ++ s ++ "\n\\end{aligned}"
+ else s
codeblock :: [String] -> Maybe String -> String -> String -> RSTParser m Blocks
codeblock classes numberLines lang body =
--
cgit v1.2.3