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
int x1= minLocation.x;
			int x2= minLocation.x + maxLocation.x - minLocation.x - 1;
			int y= minLocation.y + text.getLineHeight() - 1;
			
			GC gc= event.gc;
			if (fColor != null && !fColor.isDisposed())
			gc.setForeground(fColor);
			gc.drawLine(x1, y, x2, y);
		}
		private boolean includes(IRegion region, IRegion position) {
			return
				position.getOffset() >= region.getOffset() &&
				position.getOffset() + position.getLength() <= region.getOffset() + region.getLength();
		}
		private Point getMinimumLocation(StyledText text, int offset, int length) {
			Point minLocation= new Point(Integer.MAX_VALUE, Integer.MAX_VALUE);
	
			for (int i= 0; i <= length; i++) {
				Point location= text.getLocationAtOffset(offset + i);
				
				if (location.x < minLocation.x)
					minLocation.x= location.x;			
				if (location.y < minLocation.y)
					minLocation.y= location.y;			
			}	
			
			return minLocation;
		}