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

[Juri Linkov]

>> > FWIW, looking for something else I came across this
>> > emacs-develpost from 2016, which also talks about
>> > "files N/M", i.e., showing the number of files that
>> > are currently listed and the total number of files
>> > (including hidden/omitted):
>>
>> And maybe also show the number of marked/flagged files,
>> updated on every marking/unmarking.
>
> IMO, that's better done in the mode line, which is what
> Dired+ does.
>
> The "total" line we're talking about, for each subdir
> listing, shows the # of visible files for that subdir
> listing and the total # of files in the top-level dir
> of the buffer.
>
> The mode line shows Dired/date or Dired/name, and the
> # of marks (*) and # of flags (D).  And it shows the
> ordinal # of the file or dir on the current line (point),
> with the current sorting, as well as the total number of
> files/dirs for that subdir listing.

Another variant is that marking/unmarking commands could show
a message in the echo area with statistics of marked/flagged files
with total sizes of all marked/flagged files.