341040 - Bad RSS1 detection

Status: RESOLVED WONTFIX

(Firefox Graveyard :: RSS Discovery and Preview, defect)

Description

[Robert Sayre]

It should not detect this as a feed.

Comment 1

[Phil Ringnalda (:philor)]

Our/IE7's heuristic is "anything that's RDF, that uses the namespace prefix "rdf" for RDF, and declares the RSS 1.0 namespace." That's too broad, RSS 1.0 gets a fair amount of reuse in random RDF. We're already insisting that Atom, where there's no reason to assume it will use the default namespace, have at least the document element in the default namespace, and the RSS 1.0 spec actually does require the default namespace, though so obliquely that a lot of people have probably missed it in

Syntax: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://purl.org/rss/1.0/">
Requirement: Required exactly as shown, aside from any additional namespace declarations

So, I'd say for people who can't be bothered to use a mime-type we trust, "<channel" && "http://purl.org/rss/1.0/" && "<rdf:RDF" (in that order, not our current broadest->narrowest) is a better heuristic.

Comment 2

[Phil Ringnalda (:philor)]

Mmm, if I paid more attention to branch-only checkins, I'd know we need to check for <rdf:RDF first. And since it's nothing but convention to have the <channel> before the <item>s, insisting that <channel be in the first 512 bytes might be too much. 

xmlns(\s?)=(\s?)('|")http://purl.org/rss/1.0/ maybe?

Comment 3

[Robert Sayre]

we now reload when this happens, which is rarely