bug#32426: 27.0.50; Loosing key bindings in threads

[Michael Albinus]

This is about the feature/tramp-thread-safe branch. The bug seems to be
related to the threads implementation in general; that branch is used
only because it is simpler to demonstrate.

I have two files, a.test and b.test. Both files have the same contents

--8<---------------cut here---------------start------------->8---
Local Variables:
risky-variable: nil
End:
--8<---------------cut here---------------end--------------->8---

I open both files asynchronously via "C-x & C-x C-f *.test". The buffer
*Local Variables* is displayed, and in the minibuffer I'm asked "Please
type y, n, or !, or C-v to scroll:". Whatever key I type, I get "y is
undefined".

I have no idea how to debug this.


In GNU Emacs 27.0.50 (build 18, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2018-07-18 built on detlef
Repository revision: ba6cc1d04cef8e25534a72e90a8f0f8db0026c9f
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Ubuntu 18.04.1 LTS

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