Bug 137356 [Markers] marker grouping not working as expected via markerSupport
N20060418-0010 The Java tooling now warns when a buildpath references an execution environment for which there is no exact match in the workspace (warning support is in HEAD as of today - org.eclipse.jdt.launching and org.eclipse.jdt.debug.ui plugins). The marker created should be categorized as a buildpath problem with other JDT build path problems. To do this, I create a marker support extension as follows (in jdt.debug.ui). <extension point="org.eclipse.ui.ide.markerSupport"> <markerAttributeGrouping defaultGroupingEntry="org.eclipse.jdt.ui.category.buildpath" markerType="org.eclipse.jdt.launching.jreContainerMarker"/> </extension> My understanding is that this should group all markers of type "org.eclipse.jdt.launching.jreContainerMarker" as buildpath problems. JUI has a corresponding grouping entry: <markerGroupingEntry id="org.eclipse.jdt.ui.category.buildpath" markerGrouping="org.eclipse.jdt.ui.java_marker_category" label="%MarkerCategory.buildpath" priority="100"/> I get the following error in the log: Reference to invalid markerGroupingEntry org.eclipse.jdt.ui.category.buildpath
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerSupportRegistry.java
String scope = element.getAttribute(SCOPE);
		if (scope == null) {
			return -1;
		}
		if (scope.equals(ON_ANY)) {
			return MarkerFilter.ON_ANY;
		}
		if (scope.equals(ON_SELECTED_ONLY)) {
			return MarkerFilter.ON_SELECTED_ONLY;
		}
		if (scope.equals(ON_SELECTED_AND_CHILDREN)) {
			return MarkerFilter.ON_SELECTED_AND_CHILDREN;
		}
		if (scope.equals(ON_ANY_IN_SAME_CONTAINER)) {
			return MarkerFilter.ON_ANY_IN_SAME_CONTAINER;
		}
		return -1;
	}
	/**
	 * Get the constant for scope from element. Return -1 if there is no value.
	 * 
	 * @param element
	 * @return int one of MarkerView#ON_ANY MarkerView#ON_SELECTED_ONLY
	 *         MarkerView#ON_SELECTED_AND_CHILDREN
	 *         MarkerView#ON_ANY_IN_SAME_CONTAINER
	 */
	private int getSeverityValue(IConfigurationElement element) {
		String severity = element.getAttribute(SEVERITY);
		if (severity == null) {
			return -1;