bug#63648: 29.0.90; project.el: with switch-use-entire-map, switch-project errors on non-project commands

[Juri Linkov]

>>>> So a similar function could remember 'project-current-directory-override'
>>>> for the next command.
>>>
>>> But we were talking about "regular" commands, right? Those don't know
>>> anything about project-current-directory-override.
>>
>> Any command indeed.  They should use the temporarily set default-directory.
>
> Actually, instead of 'project-current-directory-override' I meant
> 'default-directory'.  But probably this is impossible to do
> because of these restrictions:
>
> 1. the current buffer should remain the same for the next command;
> 2. the buffer-local value of 'default-directory' should remain the same;
> 3. the next command should have a new value of 'default-directory'.
>
> I see no way to satisfy all these requirements.

Except adding a variable like 'project-current-directory-override'
somewhere inside 'command_loop_1'.