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

[Juri Linkov]

> +         ;; Variation: could be a separate command, or an option.
> +         ;; (command (let ((overriding-local-map project-prefix-map))
> +         ;;            (key-binding (read-key-sequence
> +         ;;                          (format "[execute in %s]:" 
> (project-root pr)))
> +         ;;                         t)))

Thanks, it works nicely.
Any reason not to use this by default?

> +      (if found
> +          (let ((project-current-directory-override root))
> +            (call-interactively command))
> +        (let ((default-directory root))
> +          (call-interactively command))))))

Not sure why need to let-bind project-current-directory-override here.
It seems to work with and without it.