bug#9528: 24.0.50; Info navigation

[Juri Linkov]

> Note that "C-h l" does not say "the last node _presented_", it says
> "the last node _visited_".

(info "(info-stnd) Node Commands") says:

`l' (`history-node')
     Pop the most recently _selected_ node in this window from the node
     history.

So it's a bug in the stand-alone reader because it returns to the node
that was not _recently selected_.  This behavior is confusing for users.

>> >> 1. Eval: (info "(elisp)Macros")
>> >> 2. Move point to line 22 (* Simple Macro).
>> >> 3. Type: <DEL>
>> >>  --> (Expected) Go to node "(elisp)Related Topics".
>> >>  --> (Observed) Go to node "(elisp)Simple Macro".
>> >
>> > Sorry, I can't change this because this behavior is explicitly
>> > implemented in Info, so it's not a bug.
>
> I think it's a bug, because the stand-alone Info reader goes to
> Related Topics.

I agree that it looks like a bug, but I don't understand why it's coded
explicitly that way.  Perhaps the intention was to implement this behavior
only when the value of `Info-scroll-prefer-subnodes' is non-nil?