Looking at what Python (subprocess) and Go (os.exec) do, it looks like they
agree on the following:
- executable and arguments are merged in one array
- they don't require full path for the executable
- they don't expand tildes
- blocking calls are the default
- they are more explicit about st
In that case I think the discussion is kind of moot, scripts are
fundamentally different than apps, being terse is important and almost
always you want to block.
If better scripting support is a non-goal for Foundation then `Process` is
mostly fine as it is. My only wish would be to somehow make i
