Nice!

You could also use

    BEGIN {
      FS = “: “
    }

Which sets the field separator. This would put the keywords into $2 and remove the need for the gensubs :)

It's much shorter to set the field separator with an option: awk -F": " or awk -F ": " do the same thing.

Well, look at that. Thanks!

In both your essays, you have some text surrounded by square brackets: are these intentded to render out as hyperlinks?

Yes. Are they not!?

They are now. Some of them weren't. Maybe it was a local error for me. Or maybe PEBCAK.

Anyway, cool blog. I'm reading it.