Re^10: How to write testable command line script? (updated)

[thechartist]

Thanks for coming back to this. I was about to go into detail showing how my representation, at least for the purposes of addition and subtraction, was equivalent, but you had already done that for me.

After starting this script, I later realized that my initial algorithm did not handle division correctly. I believe you method of converting everything to seconds is the most general and will likely be what I implement when I revise this.