bug#39067: shell-command-dont-erase-buffer strange behaviour

[Tino Calancha]

On Mon, 20 Jan 2020, Mattias Engdegård wrote:

> +            (,command (format "%s -Q --batch --eval '(princ \"%s\")'" 
> invocation-name ,str))
>
> Shouldn't invocation-name be something like
> (expand-file-name invocation-name invocation-directory)
> here?

You are right! Could someone push that fix? [I won't be at my machine 
until several hours]