Word difference fails in some cases

[Dmitry Kasatsky]

Just toggle word difference mode

‌

[Evgeny Kralko]

Temp workaround provided:

catch (ArgumentOutOfRangeException)
{
// temp workaround to prevent diffMatchPath exception
// due to some unexpected characters (� for example).
//
diffs = diffMatchPatch.DiffMain(removedText.Replace('�', '?'), addedText.Replace('�', '?'));
}