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-rw-r--r--src/Text/Pandoc/Citeproc/MetaValue.hs3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/Text/Pandoc/Citeproc/MetaValue.hs b/src/Text/Pandoc/Citeproc/MetaValue.hs
index 17d5da327..f5a49f49e 100644
--- a/src/Text/Pandoc/Citeproc/MetaValue.hs
+++ b/src/Text/Pandoc/Citeproc/MetaValue.hs
@@ -147,7 +147,7 @@ metaValueToDate (MetaMap m) =
mapMaybe metaValueToDateParts xs
Just _ -> []
Nothing ->
- maybe [] (:[]) $ metaValueToDateParts (MetaMap m)
+ maybeToList $ metaValueToDateParts (MetaMap m)
circa = fromMaybe False $
M.lookup "circa" m >>= metaValueToBool
season = M.lookup "season" m >>= metaValueToInt
@@ -251,4 +251,3 @@ normalizeKey k =
"pmid" -> "PMID"
"url" -> "URL"
x -> x
-