Org reader: Fix cite parsing behaviour

Until now, org-ref cite keys included special characters also at the
end. This caused problems when citations occur right before colons or
at the end of a sentence.

With this change, all non alphanumeric characters at the end of a cite
key are ignored.

This also adds `,` to the list of special characters that are legal
in cite keys to better mirror the behaviour of org-export.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/Text/Pandoc/Readers/Org/Inlines.hs b/src/Text/Pandoc/Readers/Org/Inlines.hs
index 6946e8379..dcea61222 100644
--- a/src/Text/Pandoc/Readers/Org/Inlines.hs
+++ b/src/Text/Pandoc/Readers/Org/Inlines.hs
@@ -339,8 +339,16 @@ linkLikeOrgRefCite = try $ do
 -- | Read a citation key.  The characters allowed in citation keys are taken
 -- from the `org-ref-cite-re` variable in `org-ref.el`.
 orgRefCiteKey :: PandocMonad m => OrgParser m String
-orgRefCiteKey = try . many1 . satisfy $ \c ->
-                  isAlphaNum c || c `elem` ("-_:\\./"::String)
+orgRefCiteKey =
+  let citeKeySpecialChars = "-_:\\./," :: String
+      isCiteKeySpecialChar c = c `elem` citeKeySpecialChars
+      isCiteKeyChar c = isAlphaNum c || isCiteKeySpecialChar c
+
+  in try $ many1Till (satisfy $ isCiteKeyChar)
+           $ try . lookAhead $ do
+               many . satisfy $ isCiteKeySpecialChar
+               satisfy $ not . isCiteKeyChar
+
 
 -- | Supported citation types.  Only a small subset of org-ref types is
 -- supported for now.  TODO: rewrite this, use LaTeX reader as template.