public bool AppendWhiteSpace()
{
if (Debug)
Logger.Log.Debug ("AppendWhiteSpace ()");
if (last_was_structural_break)
return true;
last_was_structural_break = false;
text_builder.Append (WHITESPACE);
if (snippetWriter != null)
snippetWriter.Write (WHITESPACE);
return UpdateCharsAdded (1);
}