From 8c64068fe2e7f33f760d26bd3d6abc547b289a18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Fri, 3 Dec 2021 12:27:08 +0100
Subject: [PATCH] relaxng: mark group <description>s as optional

Various groups used in comps-eln*.xml.in don't have descriptions.
I assume that this is on purpose because they are marked as
<uservisible>false</uservisible>.

An alternative would be to add <_description>s everywhere, but then
we'd also need to do translations.
---
 comps.rng | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

diff --git a/comps.rng b/comps.rng
index e77093ba..1ac3b9e6 100644
--- a/comps.rng
+++ b/comps.rng
@@ -228,16 +228,18 @@
       <ref name="ID"/>
     </element>
     <choice>
-      <!-- Either we have one _name and one _description (comps.xml.in) -->
+      <!-- Either we have one _name and an optional _description (comps.xml.in) -->
       <group>
         <element name="_name">
           <ref name="string"/>
         </element>
-        <element name="_description">
-          <ref name="string"/>
-        </element>
+        <optional>
+          <element name="_description">
+            <ref name="string"/>
+          </element>
+        </optional>
       </group>
-      <!-- Or we have one name, one description, and then zero-or-more
+      <!-- Or we have one name, an optional description, and then zero-or-more
            localized names and descriptions following that. -->
       <group>
         <element name="name">
@@ -251,17 +253,19 @@
             <ref name="string"/>
           </element>
         </zeroOrMore>
-        <element name="description">
-          <ref name="string"/>
-        </element>
-        <zeroOrMore>
+        <optional>
           <element name="description">
-            <attribute name="xml:lang">
-              <ref name="locale"/>
-            </attribute>
             <ref name="string"/>
           </element>
-        </zeroOrMore>
+          <zeroOrMore>
+            <element name="description">
+              <attribute name="xml:lang">
+                <ref name="locale"/>
+              </attribute>
+              <ref name="string"/>
+            </element>
+          </zeroOrMore>
+        </optional>
       </group>
     </choice>
   </define>