Merge pull request #63 from hemnstill/master

Fix selection from the end of the line. Line ends with spaces.

Author: dgrunwald

ICSharpCode.AvalonEdit/Rendering/BackgroundGeometryBuilder.cs

@@ -258,7 +258,7 @@ static IEnumerable<Rect> ProcessTextLines(TextView textView, VisualLine visualLi
 						}
 					}
 					if (segmentEndVC >= visualLine.VisualLengthWithEndOfLineMarker) {
-						double left = (segmentStartVC > visualLine.VisualLengthWithEndOfLineMarker ? visualLine.GetTextLineVisualXPosition(lastTextLine, segmentStartVC) : line.Width) - scrollOffset.X;
+						double left = (segmentStartVC > visualLine.VisualLengthWithEndOfLineMarker ? visualLine.GetTextLineVisualXPosition(lastTextLine, segmentStartVC) : line.WidthIncludingTrailingWhitespace) - scrollOffset.X;
 						double right = ((segmentEndVC == int.MaxValue || line != lastTextLine) ? Math.Max(((IScrollInfo)textView).ExtentWidth, ((IScrollInfo)textView).ViewportWidth) : visualLine.GetTextLineVisualXPosition(lastTextLine, segmentEndVC)) - scrollOffset.X;
 						Rect extendSelection = new Rect(Math.Min(left, right), y, Math.Abs(right - left), line.Height);
 						if (!lastRect.IsEmpty) {