Bug 32680 Print margin is in wrong location
Eclipse 2.1 (RC1) After changing my font to "Courier New", then turning on the Print Margin, I had to realize that it was located in the wrong place (off by some characters)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
while (offset < length) {
					c= document.getChar(offset);
					if (!Character.isJavaIdentifierPart(c))
						break;
					++offset;
				}
				
				int end= offset;
				
				if (start == end)
					return new Region(start, 0);
				else
					return new Region(start + 1, end - start - 1);
				
			} catch (BadLocationException x) {
				return null;
			}
		}
		IRegion getCurrentTextRegion(ISourceViewer viewer) {
			int offset= getCurrentTextOffset(viewer);				
			if (offset == -1)
				return null;
			IJavaElement input= SelectionConverter.getInput(JavaEditor.this);
			if (input == null)
				return null;
			try {
				
				IJavaElement[] elements= null;
				synchronized (input) {
					elements= ((ICodeAssist) input).codeSelect(offset, 0);