From 8dbd4938f29aceb079316c9215b515744543b4d5 Mon Sep 17 00:00:00 2001
From: Vlad Hanciuta <wladsh@gmail.com>
Date: Tue, 7 Apr 2020 00:41:28 +0100
Subject: Vimwiki reader: Add nested syntax highlighting (#6257)

Nested syntaxes are specified like this:
{{{sql
SELECT * FROM table
}}}

The preformatted code block parser has been extended to check if the
first attribute of the block is not a `key=value` pair, and in that case
it will be considered as a class.

Closes #6256.
---
 src/Text/Pandoc/Readers/Vimwiki.hs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/Text')

diff --git a/src/Text/Pandoc/Readers/Vimwiki.hs b/src/Text/Pandoc/Readers/Vimwiki.hs
index f3551b278..74dac5ea7 100644
--- a/src/Text/Pandoc/Readers/Vimwiki.hs
+++ b/src/Text/Pandoc/Readers/Vimwiki.hs
@@ -236,7 +236,11 @@ preformatted = try $ do
 makeAttr :: Text -> Attr
 makeAttr s =
   let xs = splitTextBy (`elem` (" \t" :: String)) s in
-    ("", [], mapMaybe nameValue xs)
+    ("", syntax xs, mapMaybe nameValue xs)
+
+syntax :: [Text] -> [Text]
+syntax (s:_) | not $ T.isInfixOf "=" s = [s]
+syntax _ = []
 
 nameValue :: Text -> Maybe (Text, Text)
 nameValue s =
-- 
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