Bug 77598 [nls tooling] NLS hovers / Ctrl+Click not consistent for duplicate keys
20041103 With the following files, the key A.0 is duplicate. - Ctrl + Click: Junps to 'hello' - Hover over "A.0" in class A: shows 'world' public class A { String h= Messages.getString("A.0"); //$NON-NLS-1$ } messages.properties: A.0=hello A.0=world
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
ISourceViewer sourceViewer= getSourceViewer();
			if (sourceViewer == null)
				return;
				
			StyledText text= sourceViewer.getTextWidget();			
			if (text == null || text.isDisposed())
				return;
				
			updateColor(sourceViewer);
			sourceViewer.addTextInputListener(this);
			
			IDocument document= sourceViewer.getDocument();
			if (document != null)
				document.addDocumentListener(this);			
			text.addKeyListener(this);
			text.addMouseListener(this);
			text.addMouseMoveListener(this);
			text.addFocusListener(this);
			text.addPaintListener(this);
			
			((ITextViewerExtension4)sourceViewer).addTextPresentationListener(this);
			
			updateKeyModifierMask();
			
			IPreferenceStore preferenceStore= getPreferenceStore();
			preferenceStore.addPropertyChangeListener(this);
		}
		
		private void updateKeyModifierMask() {
			String modifiers= getPreferenceStore().getString(BROWSER_LIKE_LINKS_KEY_MODIFIER);