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From: mink@cfa.HARVARD.EDU (Doug Mink, OIR)
Newsgroups: comp.windows.x
Subject: Re: how does xterm tell vi the window size
Message-ID: <214@cfa.HARVARD.EDU>
Date: 5 Oct 89 15:32:02 GMT
References: <125782@sun.Eng.Sun.COM>
Sender: news@cfa.HARVARD.EDU
Lines: 21


 In article <253@zeek.UUCP> rick@zeek.UUCP (Rick Wilhelm) writes:
> So my question is two-fold.
> 1)  (this case)  How can we let vi know that the window is _not_ necessarily
>     24x80?
> 2)  (in general) How does vi (or vnews for that matter) find out a window's
>     size from xterm?

1) run eval `resize`

2) The resize program adds a TERMCAP entry to the xterm's environment.  tgetint
   in the libtermcap.a library checks to see whether there is a TERMCAP in the
   environment before reading the terminal's entry in /etc/termcap.  resize
   sets the "co" and "li" entries which can be read with tgetnum.

Doug Mink
Harvard-Smithsonian Center for Astrophysics
Cambridge, Massachusetts

Internet:  mink@cfa.harvard.edu
BITNET:    mink@cfa