From c550bf8482310dfbcb20694e7bc969d19acc5f7d Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Sat, 5 Jun 2021 16:34:27 +0200
Subject: CommonMark writer: do not use simple class for fenced-divs
In https://github.com/jgm/pandoc/pull/7242, we introduced a simple attribute style for for code blocks and fenced divs with a single class but turns out the CommonMark extension does not support it for fenced divs.
https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/fenced_divs.md
---
src/Text/Pandoc/Writers/Markdown.hs | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/Text/Pandoc/Writers/Markdown.hs b/src/Text/Pandoc/Writers/Markdown.hs
index 6316d9419..b16c71358 100644
--- a/src/Text/Pandoc/Writers/Markdown.hs
+++ b/src/Text/Pandoc/Writers/Markdown.hs
@@ -322,9 +322,12 @@ blockToMarkdown' opts (Div attrs ils) = do
case () of
_ | isEnabled Ext_fenced_divs opts &&
attrs /= nullAttr ->
- nowrap (literal ":::" <+> classOrAttrsToMarkdown attrs) $$
- chomp contents $$
- literal ":::" <> blankline
+ let attrsToMd = if variant == Commonmark
+ then attrsToMarkdown
+ else classOrAttrsToMarkdown
+ in nowrap (literal ":::" <+> attrsToMd attrs) $$
+ chomp contents $$
+ literal ":::" <> blankline
| isEnabled Ext_native_divs opts ||
(isEnabled Ext_raw_html opts &&
(variant == Commonmark ||
--
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