Bug 215244 [Markers] Show All menu entry is not persisted
If you select Show All it will not be restored on return. Not an issue in the dialog.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
}
	/**
	 * Break the marker up into categories
	 * 
	 * @param markers
	 * @param start
	 *            the start index in the markers
	 * @param end
	 *            the last index to check
	 * @param sortIndex -
	 *            the parent of the field
	 * @return MarkerCategory[] or <code>null</code> if we are at the bottom
	 *         of the tree
	 */
	MarkerCategory[] buildHierarchy(MarkerMap markers, int start, int end,
			int sortIndex) {
		MarkerComparator sorter = getComparator();
		if (sortIndex > 0) {
			return null;
		}
		Collection categories = new ArrayList();
		Object previous = null;
		int categoryStart = start;
		Object[] elements = markers.toArray();
		for (int i = start; i <= end; i++) {
			if (previous != null) {
				
				if (sorter.compareCategory(previous, elements[i]) != 0) {
					categories
							.add(new MarkerCategory(