do not conflate variant strings in Presentation XML under bibdata, fo…

…r downstream metadata differentiation: metanorma/metanorma-jis#103

lib/isodoc/presentation_function/inline.rb

@@ -64,15 +64,16 @@ def xref1(node)
       get_linkend(node)
     end
 
-    def variant(docxml)
-      docxml.xpath(ns("//variant")).each { |f| variant1(f) }
-      docxml.xpath(ns("//variant[@remove = 'true']")).each(&:remove)
-      docxml.xpath(ns("//variant")).each do |v|
-        next unless v&.next&.name == "variant"
+    def variant(xml)
+      b = xml.xpath(ns("//bibdata//variant"))
+      (xml.xpath(ns("//variant")) - b).each { |f| variant1(f) }
+      (xml.xpath(ns("//variant[@remove = 'true']")) - b).each(&:remove)
+      (xml.xpath(ns("//variant")) - b).each do |v|
+        next unless v.next&.name == "variant"
 
         v.next = "/"
       end
-      docxml.xpath(ns("//variant")).each { |f| f.replace(f.children) }
+      (xml.xpath(ns("//variant")) - b).each { |f| f.replace(f.children) }
     end
 
     def variant1(node)

spec/isodoc/inline_spec.rb

@@ -1717,6 +1717,12 @@
       <bibdata>
       <language>en</language>
       <script>Latn</script>
+      <contributor>
+      <role type="author"/>
+      <organization>
+      <name><variant language="en">A</variant><variant language="fr">B</variant></name>
+      </organization>
+      </contributor>
       </bibdata>
       <preface>
           <clause id="A"><title><variant lang="en" script="Latn">ABC</variant><variant lang="fr" script="Latn">DEF</variant></title></clause>
@@ -1735,6 +1741,12 @@
         <bibdata>
           <language current='true'>en</language>
           <script current='true'>Latn</script>
+                <contributor>
+      <role type="author"/>
+      <organization>
+      <name><variant language="en">A</variant><variant language="fr">B</variant></name>
+      </organization>
+      </contributor>
         </bibdata>
         <preface>
           <clause type="toc" id="_" displayorder="1"> <title depth="1">Table of contents</title> </clause>