bug#6758: 23.2; xterm.el: please provide an option to not discard input in terminal-init-xterm

[Stefan Monnier]

> Any thoughts on this patch?

I installed a similar patch (tho rewritten based on the latest version
of the code), except that it only uses your asynchronous approach if
there's pending input.  This way, the old synchronous method is still
used in "most" cases and the new riskier approach is only used when we
would otherwise have had to discard-input.

Thank you for your help,


        Stefan