bug#23737: wrong rm -i prompt

[Lemke, Michael ST/HZA-ZIC2]

With coreutils 8.25 on Cygwin I get this;

P01104393> rm -i a\    b
rm: remove regular empty file 'a'$'\t''b'?

What is this?  The filename is 'a       b' and not the nonsense rm outputs.
There is a tab character between a and b.


P01104393> rm --version
rm (GNU coreutils) 8.25
Packaged by Cygwin (8.25-3)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Paul Rubin, David MacKenzie, Richard M. Stallman,
and Jim Meyering.