On 9/19/21 22:06 in <https://bugs.gnu.org/50694>, 積丹尼 Dan Jacobson wrote:

> What a headache.
> "Six months ago" means slightly different things to cpio and ls.
> And ls documents do say exactly what,
> and cpio documents don't even say six months.

Thanks for the bug report. Since the behavior is documented for ls but 
not cpio and lots more people use ls, let's change cpio to behave like 
ls. Proposed patches to cpio attached. The last patch does the actual 
change; the earlier ones are issues I noticed on the way.

(Sergey, I don't have commit privileges for cpio on Savannah. If you 
give me privileges I can install these patches; otherwise, please take a 
look and install if you like. Thanks.)

In the meantime I'll close the coreutils bug report, as I don't think we 
need to change GNU 'ls'.