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Groups > linux.debian.user > #239527

Re: Get Terminal to Echo line in buffer on backspace

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On Tue 31 Aug 2021 at 16:13:52 (+0200), Nicolas George wrote:
> David Wright (12021-08-31):
> > The only useful effect of that binding that I've seen is not when
> > typing ahead, but at the normal command line
> 
> Of course. When typing ahead, your shell's line editor is not in action,
> and therefore its bindings will have no effect immediately. They will
> have an effect when the interactive shell resumes and received the
> keystrokes.
> 
> Before that, you are running with the tty's line editor, and therefore
> its bindings are the one in action. See the output of stty -a.
> 
> The behavior of ttys is one of the trickiest part of Unix's user
> interface, and we are directly dealing with it here. Be sure you
> understand what is going on and who is doing what task; otherwise you
> will be utterly confused.

That seems reasonable. So in summary, ESC 1 ^L gives a clean refresh
of the command line when you're at a shell prompt, and ^R prints the
contents of your typeahead buffer when you're not.

I think that's what the OP /really/ wants. I can see no point in tying
the ^R refresh to the Backspace key: if you rubout four characters,
why would you want four refreshes?

Perhaps, in some way, the OP hasn't got rprnt = ^R listed in their
$ stty -a   output, but that's beyond my knowledge.

Cheers,
David.

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Thread

Get Terminal to Echo line in buffer on backspace Thomas Anderson <thomas.anderson@little-beak.com> - 2021-08-30 14:40 +0200
  Re: Get Terminal to Echo line in buffer on backspace Nicolas George <george@nsup.org> - 2021-08-30 14:50 +0200
  Re: Get Terminal to Echo line in buffer on backspace Greg Wooledge <greg@wooledge.org> - 2021-08-30 14:50 +0200
    Re: Get Terminal to Echo line in buffer on backspace Thomas Anderson <thomas.anderson@little-beak.com> - 2021-08-30 15:00 +0200
      Re: Get Terminal to Echo line in buffer on backspace Greg Wooledge <greg@wooledge.org> - 2021-08-30 15:20 +0200
        Re: Get Terminal to Echo line in buffer on backspace songbird <songbird@anthive.com> - 2021-08-31 04:00 +0200
      Re: Get Terminal to Echo line in buffer on backspace Nicolas George <george@nsup.org> - 2021-08-30 17:10 +0200
    Re: Get Terminal to Echo line in buffer on backspace Nicolas George <george@nsup.org> - 2021-08-30 17:10 +0200
      Re: Get Terminal to Echo line in buffer on backspace Greg Wooledge <greg@wooledge.org> - 2021-08-30 17:40 +0200
        Re: Get Terminal to Echo line in buffer on backspace David Wright <deblis@lionunicorn.co.uk> - 2021-08-31 16:10 +0200
          Re: Get Terminal to Echo line in buffer on backspace Nicolas George <george@nsup.org> - 2021-08-31 16:20 +0200
            Re: Get Terminal to Echo line in buffer on backspace David Wright <deblis@lionunicorn.co.uk> - 2021-08-31 16:50 +0200
          Re: Get Terminal to Echo line in buffer on backspace Greg Wooledge <greg@wooledge.org> - 2021-08-31 16:50 +0200
            Re: Get Terminal to Echo line in buffer on backspace David Wright <deblis@lionunicorn.co.uk> - 2021-09-01 16:10 +0200
        Re: Get Terminal to Echo line in buffer on backspace Thomas Anderson <thomas.anderson@little-beak.com> - 2021-09-02 05:50 +0200
          Re: Get Terminal to Echo line in buffer on backspace Greg Wooledge <greg@wooledge.org> - 2021-09-02 15:40 +0200

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