I'd hate to try to set a sysctl variable to a string of unprintables,
but I think that's plausible.

I'd like to see the "invalid" characters automatically converted,
say, to spaces.  Then they still take up space, so they match '?'
globs, and they compare equal to the right things.

I would like 'a b' and 'a\nb' to compare equal, but both to be distinct
from 'ab'.

I would also like any attempt to get the name of a file named
'a\nb' to get 'a b', so I can use xargs safely.

-s