bug#47205: 27.1.91; [bug] unexpected input event interrupted expand-file

[Eli Zaretskii]

> Cc: 47205@debbugs.gnu.org
> Date: Thu, 18 Mar 2021 08:27:19 +0800
> From:  LinSun via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> > which problem have you encountered? Or is it just the docstring?
> 
> It’s from the issue https://github.com/bbatsov/helm-projectile/issues/154, 
> 
> “[bug] `helm-projectile-find-file' empty candidate when there is "*.iso/" 
> folder”
> 
> Through the traceback I attached in first mail, the dbus event cause a 
> unexpected return value in line 
> 
> https://github.com/emacs-helm/helm/blob/26d4e9e4d38a143d7dfb2fe206eacbc326944532/helm.el#L4649,
> 
> Then it’s function will show nothing.

Is this because helm uses while-no-input or throw-on-input?  If so,
does it help to bind while-no-input-ignore-events to a list that
includes this kind of dbus events?