On Tue, Jan 10, 2006 at 04:58:12PM -0000, James Holderness <[EMAIL PROTECTED]> wrote a message of 31 lines which said:
> There are a couple of options for an aggregator author. They can > mark an entry as having changed when 1) the content of the entry has > changed; 2) the updated element has changed; 3) the updated element > has changed as well as the content having been changed; or 4) do > nothing at all. I'm sure there are other possibilities, but I think > those are the main issues. This is, IMHO, a completely different issue from the one asked by the OP. In Atom, it seems to me that 2) is the only reasonable choice (1 or 3 would require to store the content - or at least a hash - and, if applied blindly, would create many false positives since a simple reformatting of the XML would trigger a "change"). The question asked by the OP was: when <updated> was changed, what the reader should do? (And my reply was "Interesting question but a bit out of scope for the atom-syntax group.")
