its: Extend schema so that docbook4.its and docbook5.its pass.

* gettext-tools/src/its.xsd: Add an <any> element that catches other rules.

diff --git a/gettext-tools/src/its.xsd b/gettext-tools/src/its.xsd
index cd48c23f245a6756f049382ff295bb4716a4de35..21cd7f45445df572e74f8286a5e8b048de4c7110 100644 (file)
--- a/gettext-tools/src/its.xsd
+++ b/gettext-tools/src/its.xsd
@@ -45,6 +45,9 @@ Written by Bruno Haible <bruno@clisp.org>, 2024.
         </element>
         <element ref="gt:escapeRule">
         </element>
+        <!-- Allow other rules from the ITS namespace, as well as itstool
+             extensions (not implemented by GNU gettext).  -->
+        <any namespace="##targetNamespace http://itstool.org/extensions/" processContents="skip"/>
       </choice>
     </sequence>
     <attribute name="version" type="string" use="required" fixed="2.0"></attribute>