Path: utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!ames!pacbell!att!whuts!lcuxlm!vilya!motown!clyde!watmath!mks!wheels
From: wheels@mks.UUCP (Gerry Wheeler)
Newsgroups: comp.os.minix
Subject: Re: Line wrap
Summary: phantom column 81
Message-ID: <531@mks.UUCP>
Date: 21 Oct 88 16:55:25 GMT
References: <091488A8547@syntel.UUCP> <5870007@hpcvca.HP.COM>
Organization: Mortice Kern Systems, Waterloo, Ont.
Lines: 23

In article <5870007@hpcvca.HP.COM>, charles@hpcvca.HP.COM (Charles Brown) writes:
> > If I were writing the driver, I would have
> > it wrap when you attempted to write one past the end of the line, *NOT*
> > when you write into the last column.
>
> Generally the cursor sits where the NEXT character will be added.  If
> column 80 has just been filled you have 2 choices:
>  1. Put the cursor on column 1 of the next line.
>  2. Make the cursor disappear.

Since the tty is now supposed to emulate (roughly) a VT100 terminal, why
not do what DEC does? If a character is written into column 80, the
cursor remains where it is, on top of the new character.  If a CRLF
follows, operation is as expected.  If another character follows, it
goes into column 1 of the next line (with scroll if necessary), and the
cursor goes into column 2. 

This looks strange, and requires special handling in the driver. But it
works well. I prefer this technique to no wrapping at all.
-- 
     Gerry Wheeler                           Phone: (519)884-2251
Mortice Kern Systems Inc.               UUCP: uunet!watmath!mks!wheels
   35 King St. North                             BIX: join mks
Waterloo, Ontario  N2J 2W9                  CompuServe: 73260,1043