Path: utzoo!utgpu!watmath!iuvax!mailrus!ames!lll-winken!uunet!unh!pss
From: pss@unh.UUCP (Paul S. Sawyer == paul)
Newsgroups: comp.sys.mac
Subject: Re: Red Ryder problems
Summary: Try fixing the TERMCAP...
Message-ID: <1119@unh.UUCP>
Date: 12 Apr 89 21:02:27 GMT
References: <1584@husc6.harvard.edu> <11888@ut-emx.UUCP>
Organization: unhtel.UUCP == UNH Telecommunications
Lines: 44

In article <11888@ut-emx.UUCP>, nghiem@ut-emx.UUCP (Alex Nghiem) writes:
> In article <1584@husc6.harvard.edu>, gallaghe@husc8.HARVARD.EDU (Paul Gallagher) writes:

> 1> I'm using Red Ryder 10.3 to emulate a vt100 to use with my Vax account.
> 1> ... peculiar bugs.  For example, when text is displayed, lines are often
> 1> broken in half or the 1st letter appears on one line and the remainder
> 1> of the line appears on the next.  
> 1> Does anyone know what's wrong?  I've tried changing the terminal emulation
> 1> preferences options and the vt100 modes options, but the problems remain.
> 1> 
> 
> Red Ryder does not respond to the VT100 screen escape codes properly.
> I use Kermit 9(40) instead. 
> 
> nghiem
> standard disclaimer.

MacTerminal, MacKermit, Red Ryder, and MicroPhone II (and others which
I have NOT tried) all seem to have their own idea of what a VT100
does.  I gave up on finding the "perfect" emulation in favor of
a balance of emulation features and interface features.  I (mostly)
use Microphone II, but there is room for varied tastes;  any of these
can be made to work.

Since you are using VI, I assume the system is Unix, Ultrix, etc. and
(hopefully) not VMS.  You can make your own TERMCAP entry and include
only the necessary-for-VI-features and/or supported-by-RR-features.
There may be such an entry on your system already.  (Sometimes ansi,
for instance, may be this minimalist termcap, sometimes it has 
everything but the kitchen sink.)  My emulators were falling down
when VI tried to use some neat or supposed-efficient feature such as
setting the scrolling window, insert/delete line, etc.  BTW, when this
has happened to me, and I had to get the edit done rather than fixing
and fiddling termcaps, etc, I would redraw the screen (CONTROL-L)
quite often to see where I was REALLY at.  Keeping lines < 80 characters
helps somewhat also, as the emulator and VI probably don't agree on
the autowrap implementation.

		Good luck.
-- 
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Paul S. Sawyer              uunet!unh!unhtel!paul     paul@unhtel.UUCP
UNH Telecommunications
Durham, NH  03824-3523      VOX: 603-862-3262         FAX: 603-862-2030