From a3b67ae7cc801f7a545e276c6a4291a966cb6e51 Mon Sep 17 00:00:00 2001
From: Norman Walsh <ndw@nwalsh.com>
Date: Mon, 30 Dec 2002 22:04:49 +0000
Subject: [PATCH] RFE #616216: Allow sets to be recursive

---
 schema/relaxng/dbhier.rng | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/schema/relaxng/dbhier.rng b/schema/relaxng/dbhier.rng
index a41e26303..e9b53dd4d 100644
--- a/schema/relaxng/dbhier.rng
+++ b/schema/relaxng/dbhier.rng
@@ -394,7 +394,10 @@ of DocBook.</para>
               <ref name="toc"/>
             </optional>
             <oneOrMore>
-              <ref name="book.class"/>
+              <choice>
+                <ref name="set"/>
+                <ref name="book.class"/>
+              </choice>
             </oneOrMore>
             <optional>
               <ref name="setindex"/>
-- 
2.40.0