From d2c27c332cd49a60eeef97b185c0476289cc84cc Mon Sep 17 00:00:00 2001
From: Joseph Reagle <joseph.2011@reagle.org>
Date: Wed, 25 Sep 2019 21:46:31 -0400
Subject: [PATCH] Include [YYYY]? to uncertain original-date (#4269)

Discussed in #4262
---
 chicago-fullnote-bibliography.csl | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/chicago-fullnote-bibliography.csl b/chicago-fullnote-bibliography.csl
index 7d9c48c54c..bd5e1bf0b5 100644
--- a/chicago-fullnote-bibliography.csl
+++ b/chicago-fullnote-bibliography.csl
@@ -714,7 +714,14 @@
         <text variable="original-publisher-place"/>
         <text variable="original-publisher"/>
       </group>
-      <date variable="original-date" form="text" date-parts="year"/>
+      <choose>
+        <if is-uncertain-date="original-date">
+          <date variable="original-date" form="numeric" date-parts="year" prefix="[" suffix="?]"/>
+        </if>
+        <else>
+          <date variable="original-date" form="numeric" date-parts="year"/>
+        </else>
+      </choose>
     </group>
   </macro>
   <macro name="reprint-note">