Hello,

On 2018-04-03 6:03 p.m., 積丹尼 Dan Jacobson wrote:
> (info "(coreutils) Sorting the output") says
> 
> ‘-r’
> ‘--reverse’
>       Reverse whatever the sorting method is—e.g., list files in reverse
>       alphabetical order, youngest first, smallest first, or whatever.
> 
> OK but mention 'whatever' doesn't mean -U, -f, because they are sorted
> in "unsorted" order. In fact perhaps trigger an error.

Attached a small patch to clarify this point in the manual.

regards,
  -assaf