Re: Is there a way to cause vim to display the console screen without actually shelling to it?

On Tuesday, March 24, 2015 at 7:22:32 PM UTC-4, Adrian wrote:
> On Tuesday, March 24, 2015 at 2:16:30 PM UTC-4, Adrian wrote:
> > I'd like to jump between the console and the editor without having the console scroll up.
> >
> > Is there a way that this can be done? I see that there are terminal codes that save and restore the screen and this seems to be what vim uses to restore the console when you shell or Ctrl-Z out, so there must be a way to restore it without causing the shell to be invoked resulting in the terminal being scrolled up. Then a user can hit any key to restore the vim display.
> >
> > If this isn't a default feature, could this be done in scripting?
> >
> > Thanks,
> >
> >
> > A
>
> Ok, so I've figured out how I can do this with Gary Johnson's help in how to run the tput commands from vim. Here is my solution:
>
> 1. Have the following script in vim memory:
>
> function! ShowTerm()
> call system(">/dev/tty tput rmcup")
> call input("")
> call system(">/dev/tty tput smcup")
> redraw!
> endfunction
>
> 2. Map the script to some command key sequence like this:
>
> map [= :call ShowTerm()<CR>
>
> I used the sequence "[=", but you can use whatever you want.
>
> Now type the key sequence and BOOM! you get the other screen. Press Enter and BOOM! back to the vim screen. The Enter doesn't add a line feed to the terminal screen either, so no marching lines.
>
> Nice! :)
>
> Thanks all!
>
>
> A

In order not to be dependent on `tput` being available, I've found that the following that @MarkPlotnick (from unix.stackexchange.com) inferred works just as well. Just replace the function `ShowTerm()` above with:

function! ShowTerm()
silent !read -sN 1
redraw!
endfunction

This depends on `bash` being used as the shell (or others that have a similar read call).

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