Hello:

I am using Cygwin 3.1.7 and xterm 360.1 on Windows 10.  I run the X 
server and work in xterm windows.  When I copy a selection from an Excel 
spreadsheet and paste it into a vi session in an xterm window, the 
spreadsheet columns are separated by spaces.  If I paste into a vi 
session in a cygwin 3.1.7 console, I get tabs as separators.  If I run 
xterm on another host and send the display to my X Server, I get tabs.

In my previous version of Cygwin - which was probably about 2-3 years 
old - when I did this the columns were separated by tabs.  I still see 
tab separators in Cygwin 1.7.31 (Windows 8.1).  I can type tabs just 
fine in the 3.1.7 xterm.  It seems to be something in the local xterm 
that is converting the pasted tabs to spaces.  I don't think it's the 
copy portion of the operation, or I wouldn't get tabs in the console.

Did something change at some point that would explain this behavior?  Is 
there a way to get back to having the columns separated by tabs?

I understand that usually copying and pasting implies visible characters 
and that tabs are usually only visible as spaces, and this is the result 
I would expect when copying visible text separated by tabs.  However, 
when pasting from Excel, the columns have always come across separated 
by tabs - and still do, except for in xterm.

My TERM is xterm - I've tried vt100 and vt220 as well.  My TERM is also 
xterm in the working examples above.

Output from cygcheck -s -v -r is attached, as is the XWin.0.log file.  I 
redacted some identifying info.

Any help is appreciated.
Thanks
Bill