bug#12115: Please add tip about using tac to reverse a file byte-by-byte

[Paul Eggert]

On 02/01/13 13:43, Reuben Thomas wrote:
> What about a way to do it on a GNU system?

I think it works if you set LC_ALL='C', as the
C locale is unibyte on a GNU system, but someone
should double-check this.