bug#15748: 24.3.50; `customize-group': Provide a way to hide/show all values

[Drew Adams]

> Howard Melman <hmelman@gmail.com> writes:
> 
> > When exploring new packages I often use customize-group to see what
> > settings I can change but it defaults to not showing the values and
> also
> > showing only the first line of each docstring requiring me to click
> on
> > "More" for every option.  Having a command to show/hide all values
> > would be very convenient in this case.
> 
> I've now added this to Emacs 29 (as custom-toggle-hide-all-
> variables/`H/).
> 
> > It would be nice to model this on org-cycle and the new outline-cycle
> > command so that S-TAB cycles through the various display states of
> all
> > options at once.  Such a cycle command should also appear in the
> > Custom menu.
> >
> > Currently <S-tab> is bound to widget-backward in customize buffers
> but
> > perhaps it and widget-forward could move to C-c C-n/p or M-n/p
> > or something else instead.
> 
> I don't think we can move the S-<tab> bindings -- we use them all over
> the place.  I see the charm of reusing Org bindings here, but it's
> unfortunate that they clash with navigation commands common to most
> other modes.

You didn't reply to the OP in your closing message.
Instead, you replied to an extraneous enhancement
request inserted in the thread.  That should have
been a separate bug #.

This report isn't an enhancement request to add Org
or outline keys.  This is about showing/hiding all.
The bug was introduced in Emacs 24.