Date   : Wed, 19 Sep 2018 18:11:19 +0100
From   : soruk@... (Michael McConnell)
Subject: Announce: Brandy Basic - with teletext?!

On 19/09/18 00:15, gARetH baBB wrote:
> On Tue, 18 Sep 2018, Michael McConnell wrote:
> 
>>> is very wrong though.
>>
>> Without that, hitting Backspace to delete doesn't delete properly.
> 
> It's not up to the terminal to decide what is a delete, it's upto the
> host - in Viewdata terms.
> 
> Any host which doesn't undertand that is borked.
> 
> Logon to CCl4 (which is fully Viewdata compliant), and notice how the
> logon screen differs - I locate to the logon field after the frame is
> displayed and then "." to the logon field end and then "VDU 8" back to the
> logon field start.
> 
> The way you have it, any char 8 deletes what is there (ie. the dots).
> 
> For "delete" internally VHost in Viewdata mode, does do 8,32,8 but it is
> the host which does it not the terminal.

And there we go. One updated client - that only does a VDU 8 - unless 
borked% = 1, when a keyed 8 or 127 will do a VDU 8,32, expecting the 
final VDU8 to be sent by the host. Set to 1 for Telstar, 0 for CCl4.