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-rw-r--r--src/Text/Pandoc/Readers/TWiki.hs4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/Text/Pandoc/Readers/TWiki.hs b/src/Text/Pandoc/Readers/TWiki.hs
index c3cfedcfb..191343203 100644
--- a/src/Text/Pandoc/Readers/TWiki.hs
+++ b/src/Text/Pandoc/Readers/TWiki.hs
@@ -424,7 +424,9 @@ strongAndEmph :: PandocMonad m => TWParser m B.Inlines
strongAndEmph = try $ B.emph . B.strong <$> enclosed (string "__") nestedInlines
emph :: PandocMonad m => TWParser m B.Inlines
-emph = try $ B.emph <$> enclosed (char '_') nestedInlines
+emph = try $ B.emph <$> enclosed (char '_')
+ (\p -> notFollowedBy (char '|') >> nestedInlines p)
+-- emphasis closers can't cross table cell boundaries, see #3921
emphHtml :: PandocMonad m => TWParser m B.Inlines
emphHtml = B.emph . mconcat <$> (parseHtmlContent "em" inline <|> parseHtmlContent "i" inline)