bug#65186: 29.0.91; `dired-free-space' is a step backward

[Drew Adams]

> > Two main problems with this self-styled enhancement:
> >
> > 1. The default behavior should be what we've always had, which
> > corresponds to NONE of the `dired-free-space' option values.
> 
> The 'separate' value (which is not the default) produces the behavior
> we had in Emacs 28 and older, so why do you say that "what we always
> had corresponds to none" of the option's values?

No, it doesn't.  Not with `emacs -Q' on MS Windows (which uses ls-lisp), at 
least.  Not in 28.2 or ANY earlier release, going back to when 
`dired-hide-details-mode' was first introduced.  In all releases, if you use 
`(' to hide details then that "separate" line is one of the details that's 
_removed_.

> > 2. Even if you set the option to `separate', so you see the full info,
> > you can't get the superior previous behavior, which is that there's _no
> > such info_ shown when you hide details (`(').
> >
> > Instead, Someone(TM) maybe thought that those interested in what
> > Someone(TM) doesn't think interesting - the full info - always want to
> > see that info, even with details hidden.  Blinders...
> 
> I think it was just an oversight, now fixed on the emacs-29 branch.

Thank you very much, Eli.
(I don't build Emacs, but I'm guessing you mean what I hope you mean. ;-))

IF all you changed was to make `separate' be the default or IF it was only to 
hide all such info when hiding details, then that doesn't fix what I'd like to 
see fixed.

I'd like to see both:

1. The default behavior as it was before: when details aren't hidden, show the 
full info on a separate line, and when details are hidden, don't show any such 
info (available, used, etc.).

2. For _each_ of the option values: when details are hidden, don't show any 
such info.  (Unless you add a separate option value for something different.  
At least let users get the old behavior exactly, as one possibility)