Bug 42199 Select Next/Previous Word is broken when navigating over sequence of upper-case letters
I20030827: When positioning the caret to the right of sequences with pattern a* A+ a*, where A+ consists of more than two upper-case letters, the caret is moved to the beginning instead in front of the first A when using Ctrl+Arrow_Left.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
} else {
					return widgetOffset + viewer.getVisibleRegion().getOffset();
				}
			} catch (IllegalArgumentException e) {
				return -1;
			}			
		}
		private void highlightRegion(ISourceViewer viewer, IRegion region) {
			if (region.equals(fActiveRegion))
				return;
			repairRepresentation();
			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(region);
				if (widgetRange == null)
					return;
					
				offset= widgetRange.getOffset();
				length= widgetRange.getLength();
				
			} else {
				offset= region.getOffset() - viewer.getVisibleRegion().getOffset();
				length= region.getLength();