Bug 129812 [Markers] Enabling problem categorization per default
Build 3.2M5 Recent progress on problem categorization should be made more proeminent by enabling categorization by default. Similar to search view doing hierarchical presentation by default nowadays.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerSupportRegistry.java
.bind(
											"markerGroupingEntry {0} defines invalid group {1}",
											new String[] { next.getId(),
													nextGroupId }));
				}
			}
		}
	}
	/**
	 * Process the attribute mappings into thier required plug-ins.
	 * 
	 * @param attributeMappings
	 */
	private void processAttributeMappings(Collection attributeMappings) {
		Iterator mappingsIterator = attributeMappings.iterator();
		while (mappingsIterator.hasNext()) {
			AttributeMarkerGrouping next = (AttributeMarkerGrouping) mappingsIterator
					.next();
			String defaultEntryId = next.getDefaultGroupingEntry();
			if (defaultEntryId != null) {
				if (markerGroupingEntries.containsKey(defaultEntryId)) {
					MarkerGroupingEntry entry = (MarkerGroupingEntry) markerGroupingEntries
							.get(defaultEntryId);
					entry.setAsDefault(next.getMarkerType());
				} else {
					IDEWorkbenchPlugin.log(NLS.bind(
							"Reference to invalid markerGroupingEntry {0}",
							defaultEntryId));
				}
			}