bug#11999: 24.1.50; New Info file suffix ".info" breaks `Info-find-node-2'

[Eli Zaretskii]

> From: Stefan Monnier <monnier@IRO.UMontreal.CA>
> Cc: drew.adams@oracle.com, 11999@debbugs.gnu.org
> Date: Thu, 26 Jul 2012 19:18:43 -0400
> 
> >> Note that most uses of `user-error' are correct in that they signal
> >> conditions which are usually simply due to a mistaken manipulation
> >> (such as trying to move past the EOB)
> > That's a coincidence: we tend to want the no-debug behavior for user
> > errors.  Bu the feature is not about user errors, it's about not
> > entering the debugger.
> 
> No, it's not just a coincidence: if the problem is not due to the author
> of the code having made a mistake, then it can basically only be due to
> a mistake of the user in its larger sense (which includes the steps the
> user or his sysadmin did to set up the system).

Let's take the use case of typing "i foobar" and getting "No 'foobar'
in index." in response.  Whose fault/mistake is this?