bug#44273: "total used in directory 19 available 5.2 GiB"

[Eli Zaretskii]

> From: Michael Albinus <michael.albinus@gmx.de>
> Cc: Lars Ingebrigtsen <larsi@gnus.org>,  jidanni@jidanni.org,  rms@gnu.org,
>   44273@debbugs.gnu.org
> Date: Fri, 30 Oct 2020 14:39:26 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> My suggestion is to not display the line by default.  People who do find
> >> it useful can switch it on (but I doubt they exist in large numbers).
> >
> > An alternative would be to replace this line with a similar one, but
> > in which the units are under our control, and can be spelled out.
> 
> This could decrease performance, because you need to calculate the size
> of all files there.

Since a user option is being discussed, we could have this an opt-in
feature controlled by that option.  Since most users aren't annoyed by
the original value (as evidenced by the lack of complaints until now),
we can assume the few who are motivated to see a value with units will
agree to pay something in performance.