A more direct link: http://tools.ietf.org/html/rfc3986#appendix-C

I guess this goes on to prove that PG is yet another normal programmer like anyone else.

Do you know how often HN reacts negatively to someone (or some company (except Apple)) for flouting some standardization/programming/design rule?

Gives some perspective.

I think we knew this years ago when he released Arc without UTF-8 and an html generation library that used <font> and <table> instead of css (and got taken to task on reddit for it) :)

(or (except (some company) Apple))

Sorry... I couldn't help it :)

Are you missing the other arm of the 'or'? Try the following, which assumes 'except' returns null if the second parameter equals the first.

  (or someone
      (except 'Apple some-company))

As a general style, although somewhat inverted, I prefer 'tailing syntax':

  (or
    (except someone 'pg 'rtm '_sh)
    (except some-company 'Apple 'Weyland-Yutani))

Yeap... you are right... this is why I shouldn't never post from my phone :)