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-rw-r--r--src/Text/Pandoc/Readers/Markdown.hs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs
index 53531dc1a..f04ea88c4 100644
--- a/src/Text/Pandoc/Readers/Markdown.hs
+++ b/src/Text/Pandoc/Readers/Markdown.hs
@@ -1312,7 +1312,8 @@ citeKey = try $ do
suppress_author <- option False (char '-' >> return True)
char '@'
first <- letter
- rest <- many $ (noneOf ",;!?[]()@ \t\n")
+ let internal p = try $ p >>~ lookAhead (letter <|> digit)
+ rest <- many $ letter <|> digit <|> internal (oneOf ":.#$%&-_?<>~")
let key = first:rest
st <- getState
guard $ key `elem` stateCitations st