#859 gnu screen compatible escape sequence

[Tony Pyro]

I would like a way to map sequences starting with GNU screen's default escape key (ctrl-a). I can send the ctrl+a itself (as hex string 01) or a sequence starting with Esc, but I can't send a sequence starting with ctrl+a. For example I would press ctrl+a, then 3 to get to my third window in screen.

It's possible to redefine the escape key used by screen, but setting it to Esc would then interfere with vi.