### Eclipse Workspace Patch 1.0
#P org.eclipse.core.contenttype
Index: src/org/eclipse/core/runtime/content/XMLContentDescriber.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.core.contenttype/src/org/eclipse/core/runtime/content/XMLContentDescriber.java,v
retrieving revision 1.3
diff -u -r1.3 XMLContentDescriber.java
--- src/org/eclipse/core/runtime/content/XMLContentDescriber.java	8 Dec 2008 16:29:44 -0000	1.3
+++ src/org/eclipse/core/runtime/content/XMLContentDescriber.java	10 Dec 2008 16:21:08 -0000
@@ -79,7 +79,7 @@
 		if (!line.startsWith(XML_PREFIX))
 			return INDETERMINATE;
 		if (description == null)
-			return VALID;
+			return INDETERMINATE;
 		// describe charset if requested
 		if ((description.isRequested(IContentDescription.CHARSET))) {
 			String charset = getCharset(line);