MA18@SYSE.SALFORD.AC.UK (04/12/88)
(Minor) BUG with VLU.COM and TCVIEW12.COM Both these useful programs fail to deal correctly with a TCAP with an escaped characater in one of the control strings. In my case I need to send a null as part of the standout string. This is taken as the string terminator, and the real terminating null ends the 'reverse video off' string immediately. This results in a VLU with the entire screen in reverse video. The back-slash character which prefixes the null is sent to the screen, but fortunately it does no damage! I have not worked out a patch yet for either program, but I have adopted a work-around for my own system, which masks the 'null' byte before using it, so I can simply use a character with enough zero bits at the bottom, but which is not all zero. I hope this is a help to anyone who has a similar problem. When I get time I will try out as many programs as possible, as I suspect that this bug could be quite widespread. When I first got my Z-system I set up a TCAP with reverse-video, but dropped it as some programs produced such awful screens. This may have been the problem. -- Tony Addyman