As I've written before, I've been considering adding HTML output to minitest_lucid, to take advantage of links and color in organizing the comparison.

I've started experimenting with Set because it's the simplest:

• Current lucid text.
• Experimental HTML.

As before, this matters little if you're comparing small objects. But picture this output for, say, a thousand items.

The far more complex case will be Array, which is still to come.

And yes, it's true that I had not expected this to be so complicated, but "In for a penny, in for a pound."