Add rend="URN" attribute to idno elements of type URN
see #24
diff --git a/test/test-xml.sh b/test/test-xml.sh
index f0a84c9..32333d7 100755
--- a/test/test-xml.sh
+++ b/test/test-xml.sh
@@ -44,6 +44,12 @@
observed=$(xmlstarlet sel --net -t -v "count(/idsCorpus/idsDoc/idsText/idsHeader/fileDesc/publicationStmt/idno)" target/dnb18.i5.xml)
assert_gt "$observed" "$min_expected" "exvery text has more than one idno element"
+observed=$(xmlstarlet sel --net -t -v "count(/idsCorpus/idsDoc/idsText/idsHeader/fileDesc/publicationStmt/idno[@type='URN'])" target/dnb18.i5.xml)
+assert_eq "$observed" "$min_expected" "exvery text has one idno element of type URN"
+
+observed=$(xmlstarlet sel --net -t -v "count(/idsCorpus/idsDoc/idsText/idsHeader/fileDesc/publicationStmt/idno[@type='URN' and @rend='URN'])" target/dnb18.i5.xml)
+assert_eq "$observed" "$min_expected" "every idno element of type URN also has attribute rend='URN'"
+
exit_with_test_summary
diff --git a/xslt/epub2i5.xsl b/xslt/epub2i5.xsl
index 2c59831..734e644 100644
--- a/xslt/epub2i5.xsl
+++ b/xslt/epub2i5.xsl
@@ -333,6 +333,9 @@
<idno type="{$type}"><xsl:value-of select="replace(., '(([0-9]|-)+X?).*', '$1')"/></idno>
</xsl:if>
</xsl:when>
+ <xsl:when test="$type='URN'">
+ <idno rend="URN" type="URN"><xsl:value-of select="."/></idno>
+ </xsl:when>
<xsl:otherwise><idno type="{$type}"><xsl:value-of select="."/></idno></xsl:otherwise>
</xsl:choose>
</xsl:for-each>