Processing command-line-args-left?

Answer 1

You could try using 'apply to flatten out the last argument (the last argument to 'apply' is a list of arguments, use'funcall` if you don't have the last bit in a list).

So, version #3 above would be handled so:

(apply 'process-args (car command-line-args-left) '(1 2 3))

(The other invocations wouldn't change.)