Subject: Re: VI in dumb mode?
To: None <>
From: der Mouse <mouse@Collatz.McRCIM.McGill.EDU>
List: current-users
Date: 09/01/1994 10:00:22
>> traditional 'vi' invokes 'open mode' if it can't do the right thing
>> with the terminal.  [...]  nvi should do this as well, but Keith
>> Bostic hasn't done the support for it yet.  it requires several
>> things:

>> (2) a reasonable idea of what open mode does; it's completely
>>     undocumented!

> I've always been under the impression that open mode is exactly like
> the regular mode of vi, except of course you can only see one line at
> a time.  If that's the case, then (2) shouldn't be too hard.

As far as I have been able to tell, open mode is just regular vi with
the ordinary screen display replaced with a version that always
displays the current line, using backspaces and overstriking to update
the line, and printing a newline and doing a fresh update whenever
moving between lines.  I certainly haven't been able to find anything
other than the mode of display that differs....

					der Mouse