22 Mar
2017
22 Mar
'17
6:01 a.m.
On Mar 22, 2017, at 7:11 AM, Peter Coghlan via cctalk
<cctalk at classiccmp.org> wrote:
...
I've used Putty to connect to a VMS system to run TPU (which I think LSE is
a thinly disguised variant of) and I have regularly come across an irritating
bug which messes up full screen editing when the on-screen cursor seems to get
out of step with the text that is actually getting changed, or something like
that anyway. Scrolling down the file and scrolling back up to the point where
changes were made reveals that the changes actually made were not what it
looked like was changed on the screen.
I don't remember how VMS describes terminal types, but here's one possible issue.
VT100 is fairly different from VT101/102, and if the emulator is emulating a VT100 while
the application has been told it has a VT102, things are likely to be problematic. I
vaguely remember that VT100 lacks the insert operations, and if the program tries to use
those when they aren't there, that would certainly cause the sort of problems you
mentioned.
paul