&gt; Then I realized that it wasn&#x27;t totally clear to me what json_list_to_str_vector() should do, exactly, and so I don&#x27;t even know how it would compare.<p>It just converts a JSON-encoded list of strings into a Vec&lt;String&gt; doesn&#x27;t it? That&#x27;s what the other languages do:<p>* get data from some envvar<p>* decode it from json to an array&#x2F;list&#x2F;vector of strings<p>* concatenate argv[1..]to the result of (2)<p>* execute this new argslist (the first item being the name of the program)