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
StyledText text= viewer.getTextWidget();
			if (text == null || text.isDisposed())
				return;
				
				
			int offset= 0;
			int length= 0;
			if (viewer instanceof ITextViewerExtension3) {
				
				ITextViewerExtension3 extension= (ITextViewerExtension3) viewer;
				IRegion widgetRange= extension.modelRange2WidgetRange(new Region(offset, length));
				if (widgetRange == null)
					return;
					
				offset= widgetRange.getOffset();
				length= widgetRange.getLength();
				
			} else {
				
			IRegion region= viewer.getVisibleRegion();			
			if (!includes(region, fActiveRegion))
			 	return;		    
				offset= fActiveRegion.getOffset() - region.getOffset();
				length= fActiveRegion.getLength();
			}
			
			
			Point minLocation= getMinimumLocation(text, offset, length);
			Point maxLocation= getMaximumLocation(text, offset, length);