This is the third paragraph in section 6.5:
An absolute URI, for these purposes, consists of a scheme followed by a colon (
:
) followed by zero or more characters other ASCII control characters, space,<
, and>
. If the URI includes these characters, they must be percent-encoded (e.g.%20
for a space).
Note “… followed by zero or more characters other [ASCII control…” I’m thinking there should be “than” after the word “other”. The word is present in version 0.29 of the spec.