xml/tests/testData/xml/DuplicateIdAttribute.xml - platform/tools/idea - Git at Google

 <!DOCTYPE a [
 <!ELEMENT a (b)*>
 <!ELEMENT b (#PCDATA)>
 <!ATTLIST b
     id ID #REQUIRED>
 ]><a>
  <b id="<error descr="Duplicate id reference">1</error>"/>
  <b id="<error descr="Duplicate id reference">1</error>"/>
  <b id="2"/>
 </a>
	<!DOCTYPE a [
	<!ELEMENT a (b)*>
	<!ELEMENT b (#PCDATA)>
	<!ATTLIST b
	id ID #REQUIRED>
	]><a>
	<b id="<error descr="Duplicate id reference">1</error>"/>
	<b id="<error descr="Duplicate id reference">1</error>"/>
	<b id="2"/>
	</a>