bug#40915: [PATCH] Make leaving Info-summary more intuitive

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Tue, 28 Apr 2020 09:37:38 +0200
> Cc: 40915@debbugs.gnu.org
> 
> > I could understand that we'd like to have a single key to quit the
> > help screen, perhaps even when 'q' is pressed (which would be a change
> > in behavior), but even then it is IMO wrong to completely remove the
> > pushing onto unread-command-events, because this command is set such
> > that you could read about a key and execute it while still in the help
> > screen.  IOW, the fact that the key you pres is generally executed
> > after exiting the help screen is an important feature: it avoids the
> > need to remember the key you found in *Help* and retype it after you
> > are back in the Info buffer.
> 
> Thanks for explaining the motivation behind that feature.
> 
> I'm fine with doing a less invasive change: treat 'q' as a special
> case in Info-summary.  Many users are hardwired to press 'q' to make a
> "*Help*" buffer go away.
> 
> However, there is an inconsistency between modes; in view-mode and
> special-mode, '?' is bound to describe-major-mode.

What is describe-major-mode?  Did you mean describe-mode?

> Would it be worth it to be more consistent?  In other words, doing one of:
> 
> (a) make 'Info-summary' into a general help command and use it in more
> places, or
> (b) deprecate 'Info-summary' in favour of 'describe-mode'.
> 
> It seems to me that _if_ we think the 'Info-summary' behaviour is
> useful, we would want to ensure more modes can benefit from it.  Or,
> to put it another way, I don't see why it would be uniquely useful to
> Info-mode -- it should be useful either in many more modes or nowhere.
> I haven't formed a strong opinion on this, but it would be interesting
> to hear what people think.

Info mode is special: it is used to read the manual, including the
Emacs manual and the manual for the Info system itself.  IOW, we have
a kind-of "bootstrapping" problem here: we need to teach how to use
the system/mode by using that same system/mode.

describe-mode shows the same text for Info, but it also shows much
more, which for the new user is pure clutter and source of confusion.
It also pops up a new window, which is another problem: the user may
not know at that point how to work with more than one window.  This is
not an important consideration for the general Help commands, but it
is for Info.

So I think the case of Info _is_ special, and consistency
considerations are much less important here than an attempt to present
a simple and effective help buffer to users who may not yet know any
"advanced" features.