Bug 33629 Double-quote as character value broken in RC1
There is a series of related bugs under the category of it's really hard to enter a character value containing a double-quote character and when you try it strange things can happen. 1. Single-quote balancing seems not to work at all. When you type a single quote you get a single quote. 2. When you type the character sequence '" the result is '"" (!) 3. When you try to backspace over the extra unwanted " (either the first or the second) both are erased. The only way to get the desired result seems to be to copy and paste the " character. 4. If you try to cut and paste in the ", you can get in some weird mode where the editor thinks a string exists where there is none. I'm still trying to figure out the sequence that produced the following lines: if (c == ''' || c == '"') {" + "} (Leading tabs removed for sake of example.) I only know that the last two " characters were not typed. No doubt another illustration why editor modes are a bad idea.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
*/
	protected final ISourceViewer createSourceViewer(Composite parent, IVerticalRuler verticalRuler, int styles) {
		
		ISharedTextColors sharedColors= JavaPlugin.getDefault().getJavaTextTools().getColorManager();
		
		fOverviewRuler= new OverviewRuler(fAnnotationAccess, VERTICAL_RULER_WIDTH, sharedColors);		
		fOverviewRuler.addHeaderAnnotationType(AnnotationType.WARNING);
		fOverviewRuler.addHeaderAnnotationType(AnnotationType.ERROR);
		
		ISourceViewer viewer= createJavaSourceViewer(parent, verticalRuler, fOverviewRuler, isOverviewRulerVisible(), styles);
		
		StyledText text= viewer.getTextWidget();
		text.addBidiSegmentListener(new  BidiSegmentListener() {
			public void lineGetSegments(BidiSegmentEvent event) {
				event.segments= getBidiLineSegments(event.lineOffset, event.lineText);
			}
		});
		
		JavaUIHelp.setHelp(this, text, IJavaHelpContextIds.JAVA_EDITOR);
				
		fSourceViewerDecorationSupport= new SourceViewerDecorationSupport(viewer, fOverviewRuler, fAnnotationAccess, sharedColors);
		configureSourceViewerDecorationSupport();
		
		return viewer;
	}
	
	/*
	 * @see AbstractTextEditor#createSourceViewer(Composite, IVerticalRuler, int)
	 */
	protected ISourceViewer createJavaSourceViewer(Composite parent, IVerticalRuler verticalRuler, IOverviewRuler overviewRuler, boolean isOverviewRulerVisible, int styles) {