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From: Andrew Schulman <schulman.andrew@epa.gov>
Subject: Re: /etc/screenrc issue on cygwin64
Date: Tue, 08 Oct 2013 11:24:22 -0400
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> 
> 
> Hi cygwin,
> 
> I have found that two lines in /etc/screenrc cause the nano editor to get one line off in its text buffer display when running gnu screen in a mintty 
> terminal on cygwin64. The two lines are as follows (the ones beginning with "termcap" and "terminfo"):
> 
> ># Do not use xterms alternate window buffer.
> ># This one would not add lines to the scrollback buffer.
> ># THESE CAUSE PROBLEMS WITH 64-BIT CYGWIN AND NANO EDITOR IN MINTTY
> 
> >
> 
> >termcap xterm|xterms|xs ti=\E7\E[?47l
> >terminfo xterm|xterms|xs ti=\E7\E[?47l
> 
> Commenting them out (putting hash characters before "termcap" and "terminfo" 
> solved the problem for me. I have never seen this issue on cygwin32.
> 
> To reproduce: on cygwin64, start a mintty terminal, start gnu screen, then edit a file in nano. Soon you will see the text buffer display become garbled. Comment out the two lines identified above in /etc/screenrc and notice that the problem does not occur.

James, thanks for the report.  I haven't had any time lately to focus on
Cygwin, and my one 64-bit Windows machine is about to go in for repairs,
but I will look at this soon.  Andrew


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