bug#51390: 29.0.50; repeat-mode: Fails to repeat keys in global-map(?)

[Juri Linkov]

>>One problem I had with writing tests for such a feature — tests for 
>>repeat-mode
>>are based on ‘execute-kbd-macro’, but an error ends the keyboard macro.
>>So probably there will be no tests for this error-signaling repeatable 
>>commands.
>
> I wonder if the new mechanism added to ERT by Lars could be help here?
> (and used by the indentation tests)  But I suppose you still have to end
> up using keyboard macros one way or another...

I don't know how buffer-based ERT fixtures could help to test repeatable
key sequences.  What I rather tried to do is to use ‘ert-simulate-command’
(after removing ‘(cl-assert (not unread-command-events) t)’) and
‘ert-simulate-keys’ (after adding ‘(noninteractive nil)’ let-binding),
to no avail.