* Iterable parameters to executables are expanded in situ, so `foo(..., i, ...)` is expanded to `foo (..., i[0], i[1], ...` and `foo(..., k=i, ...)` is expanded to `foo (..., k=i[0], k=i[1], ...`.
* `-x|--trace` allows for minimal execution tracing.
* `-xx|--trace-with-linenos` allows for execution tracing that also prints the line number.
-- Marcos Dione <mdionegrulic.org.ar> Wed, 10 Feb 2016 10:14:17 +0100