Jeff King [off-list ref] writes:
I'm happy you want to improve git; but please, if you want to report
problems, check what the status is in a more recent version (or at least
tell us your version, which can help).
...
It might be worth splitting the trailing whitespace detection into
"spaces and tabs at the end" and "CRLF", and providing different
messages (though it is hopefully also obvious with the new output that
it is a CRLF issue).
I think the status on this in a more recent version can be found by
running "git grep cr-at-eol" ;-)