On 2016-11-26 19:33, Noam Postavsky wrote: > I think it might make sense to hide the bytecode with display > properties, but keep the text itself so that it's not lost when copied > to an email. This sounds like a great idea! Maybe with an indication that bytecode was omitted? Something like "[bytecode]"? I wonder if it would make sense to move `backtrace' to Lisp, too; it would make it easier to customize it. Clément.