Bug 43228 Encoding Support for Java editor broken
I20030916 This has been broken with the introduction of ExtendedTextEditor.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
private final RuleBasedCollator fCollator= (RuleBasedCollator)Collator.getInstance();
		/**
		 * Creates a new previous sub-word action.
		 * 
		 * @param code Action code for the default operation. Must be an action code from @see org.eclipse.swt.custom.ST.
		 */
		protected PreviousSubWordAction(final int code) {
			super(getSourceViewer().getTextWidget(), code);
			
			
			fCollator.setStrength(Collator.TERTIARY);
		}
		/*
		 * @see org.eclipse.jface.action.IAction#run()
		 */
		public void run() {
			try {
				final ISourceViewer viewer= getSourceViewer();
				final IDocument document= viewer.getDocument();
				int position= widgetOffset2ModelOffset(viewer, viewer.getTextWidget().getCaretOffset()) - 1;
			
				
				final IPreferenceStore store= getPreferenceStore();
				if (!store.getBoolean(PreferenceConstants.EDITOR_SUB_WORD_NAVIGATION)) {
					super.run();
					return;				
				}
				
				char character= document.getChar(position);