private void ReplaceCurrentLineText(string newText)
{
var caretIndex = CommandLineBox.CaretIndex;
var lineIndex = CommandLineBox.GetLineIndexFromCharacterIndex(caretIndex);
var characterIndex = CommandLineBox.GetCharacterIndexFromLineIndex(lineIndex);
var textOnLine = CommandLineBox.GetLineText(lineIndex);
CommandLineBox.Select(characterIndex, textOnLine.Length);
CommandLineBox.SelectedText = newText;
CommandLineBox.Focus();
CommandLineBox.Select(CommandLineBox.Text.Length, 0);
CommandLineBox.ScrollToLine(lineIndex);
}
