- Make the header more robust. If we need to add more argumetns to the scsh
command-line this will let us do that more easily in the future without having
to change the header again.
- Don't ‘display’ the result of the call to ‘run’ because that should always be
‘0’, unless something went wrong. Regardless, it doesn't belong in the output
of this program.
- Use ‘rx’ in Emacs to build the regular expression. This is easier to read,
especially considering how many times a single ‘\’ has to be escaped (once for
the string in scsh, and once more for the string in Emacs).
