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-rw-r--r--src/Text/Pandoc/Readers/Markdown.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs
index 1b408dcb2..6f51dfd9a 100644
--- a/src/Text/Pandoc/Readers/Markdown.hs
+++ b/src/Text/Pandoc/Readers/Markdown.hs
@@ -1290,7 +1290,7 @@ citeKey = try $ do
suppress_author <- option False (char '-' >> return True)
char '@'
first <- letter
- rest <- many $ (noneOf ",;]@ \t\n")
+ rest <- many $ (noneOf ",;!?[]()@ \t\n")
let key = first:rest
st <- getState
guard $ key `elem` stateCitations st