Index: src/org/eclipse/jdt/core/tests/model/ClasspathTests.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ClasspathTests.java,v
retrieving revision 1.130
diff -u -r1.130 ClasspathTests.java
--- src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	25 May 2005 16:08:44 -0000	1.130
+++ src/org/eclipse/jdt/core/tests/model/ClasspathTests.java	5 Sep 2005 10:39:31 -0000
@@ -75,8 +75,8 @@
 // All specified tests which do not belong to the class are skipped...
 static {
 	// Names of tests to run: can be "testBugXXXX" or "BugXXXX")
-//	TESTS_PREFIX = "testClasspathDuplicateExtraAttribute";
-//	TESTS_NAMES = new String[] {"testExportContainer"};
+//	TESTS_PREFIX = "testUnknownElements";
+//	TESTS_NAMES = new String[] {"testUnknownElements2"};
 //	TESTS_NUMBERS = new int[] { 23, 28, 38 };
 //	TESTS_RANGE = new int[] { 21, 38 };
 }
@@ -3166,7 +3166,7 @@
 		}, 
 		null);
 		time[0] += System.currentTimeMillis()-start[0];
-		System.out.println("No cycle check ("+numberOfParticipants+" participants) : "+ time[0]+" ms, "+ (useForwardReferences ? "forward references" : "backward references") + ", " + (createProjectsFirst ? "two steps (projects created first, then classpaths are set)" : "one step (projects created and classpaths set in one batch)"));
+		//System.out.println("No cycle check ("+numberOfParticipants+" participants) : "+ time[0]+" ms, "+ (useForwardReferences ? "forward references" : "backward references") + ", " + (createProjectsFirst ? "two steps (projects created first, then classpaths are set)" : "one step (projects created and classpaths set in one batch)"));
 		
 		for (int i = 0; i < numberOfParticipants; i++){
 			// check cycle markers
@@ -3322,6 +3322,154 @@
 	}
 }
 
+/*
+ * Ensures that unknown classpath attributes in a .classpath file are not lost when read and rewritten.
+ * (regression test for bug 101425 Classpath persistence should be resilient with unknown attributes)
+ */
+public void testUnknownAttributes() throws CoreException {
+	try {
+		IJavaProject project = createJavaProject("P");
+		editFile(
+			"/P/.classpath",
+			"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + 
+			"<classpath>\n" + 
+			"	<classpathentry unknown=\"test\" kind=\"src\" path=\"src1\"/>\n" + 
+			"	<classpathentry kind=\"src\" path=\"src2\"/>\n" + 
+			"	<classpathentry kind=\"output\" path=\"bin\"/>\n" + 
+			"</classpath>\n"
+		);
+		IClasspathEntry[] classpath = project.getRawClasspath();
+		
+		// swap 2 entries
+		IClasspathEntry src1 = classpath[0];
+		classpath[0] = classpath[1];
+		classpath[1] = src1;
+		project.setRawClasspath(classpath, null);
+		
+		// check that .classpath has correct content
+		String contents = new String (org.eclipse.jdt.internal.core.util.Util.getResourceContentsAsCharArray(getFile("/P/.classpath")));
+		assertSourceEquals(
+			"Unexpected content", 
+			"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + 
+			"<classpath>\n" + 
+			"	<classpathentry kind=\"src\" path=\"src2\"/>\n" + 
+			"	<classpathentry unknown=\"test\" kind=\"src\" path=\"src1\"/>\n" + 
+			"	<classpathentry kind=\"output\" path=\"bin\"/>\n" + 
+			"</classpath>\n",			
+			contents);		
+	} finally {
+		deleteProject("P");
+	}
+}
+
+/*
+ * Ensures that unknown classpath elements in a .classpath file are not lost when read and rewritten.
+ * (regression test for bug 101425 Classpath persistence should be resilient with unknown attributes)
+ */
+public void testUnknownElements1() throws CoreException {
+	try {
+		IJavaProject project = createJavaProject("P");
+		editFile(
+			"/P/.classpath",
+			"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + 
+			"<classpath>\n" + 
+			"	<classpathentry kind=\"src\" path=\"src1\">\n" + 
+			"		<unknown>\n" +
+			"			<test kind=\"\"/>\n" +
+			"		</unknown>\n" +
+			"	</classpathentry>\n" +
+			"	<classpathentry kind=\"src\" path=\"src2\"/>\n" + 
+			"	<classpathentry kind=\"output\" path=\"bin\"/>\n" + 
+			"</classpath>\n"
+		);
+		IClasspathEntry[] classpath = project.getRawClasspath();
+		
+		// swap 2 entries
+		IClasspathEntry src1 = classpath[0];
+		classpath[0] = classpath[1];
+		classpath[1] = src1;
+		project.setRawClasspath(classpath, null);
+		
+		// check that .classpath has correct content
+		String contents = new String (org.eclipse.jdt.internal.core.util.Util.getResourceContentsAsCharArray(getFile("/P/.classpath")));
+		assertSourceEquals(
+			"Unexpected content", 
+			"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + 
+			"<classpath>\n" + 
+			"	<classpathentry kind=\"src\" path=\"src2\"/>\n" + 
+			"	<classpathentry kind=\"src\" path=\"src1\">\n" + 
+			"		<unknown>\n" +
+			"			<test kind=\"\"/>\n" +
+			"		</unknown>\n" +
+			"	</classpathentry>\n" +
+			"	<classpathentry kind=\"output\" path=\"bin\"/>\n" + 
+			"</classpath>\n",			
+			contents);		
+	} finally {
+		deleteProject("P");
+	}
+}
+
+/*
+ * Ensures that unknown classpath elements in a .classpath file are not lost when read and rewritten.
+ * (regression test for bug 101425 Classpath persistence should be resilient with unknown attributes)
+ */
+public void testUnknownElements2() throws CoreException {
+	try {
+		IJavaProject project = createJavaProject("P");
+		editFile(
+			"/P/.classpath",
+			"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + 
+			"<classpath>\n" + 
+			"	<classpathentry kind=\"src\" unknownattribute=\"abcde\" path=\"src1\">\n" + 
+			"		<unknown1>\n" +
+			"			<test kind=\"1\"/>\n" +
+			"			<test kind=\"2\"/>\n" +
+			"		</unknown1>\n" +
+			"		<unknown2 attribute2=\"\">\n" +
+			"			<test>\n" +
+			"				<other a=\"b\"/>\n" +
+			"			</test>\n" +
+			"		</unknown2>\n" +
+			"	</classpathentry>\n" +
+			"	<classpathentry kind=\"src\" path=\"src2\"/>\n" + 
+			"	<classpathentry kind=\"output\" path=\"bin\"/>\n" + 
+			"</classpath>\n"
+		);
+		IClasspathEntry[] classpath = project.getRawClasspath();
+		
+		// swap 2 entries
+		IClasspathEntry src1 = classpath[0];
+		classpath[0] = classpath[1];
+		classpath[1] = src1;
+		project.setRawClasspath(classpath, null);
+		
+		// check that .classpath has correct content
+		String contents = new String (org.eclipse.jdt.internal.core.util.Util.getResourceContentsAsCharArray(getFile("/P/.classpath")));
+		assertSourceEquals(
+			"Unexpected content", 
+			"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + 
+			"<classpath>\n" + 
+			"	<classpathentry kind=\"src\" path=\"src2\"/>\n" + 
+			"	<classpathentry kind=\"src\" unknownattribute=\"abcde\" path=\"src1\">\n" + 
+			"		<unknown1>\n" +
+			"			<test kind=\"1\"/>\n" +
+			"			<test kind=\"2\"/>\n" +
+			"		</unknown1>\n" +
+			"		<unknown2 attribute2=\"\">\n" +
+			"			<test>\n" +
+			"				<other a=\"b\"/>\n" +
+			"			</test>\n" +
+			"		</unknown2>\n" +
+			"	</classpathentry>\n" +
+			"	<classpathentry kind=\"output\" path=\"bin\"/>\n" + 
+			"</classpath>\n",
+			contents);		
+	} finally {
+		deleteProject("P");
+	}
+}
+
 /**
  * https://bugs.eclipse.org/bugs/show_bug.cgi?id=55992
  * Check that Assert.AssertionFailedException exception is well catched