minor trackback_rdf() fix

[ramiy]

To remove in 3.0

[westi]

I don't think we need this function at all anymore.

I guess it would be better just to depreceate it and return empty content as the discovery is automatic now.

[ramiy]

what do you mean when you say "the discovery is automatic now" ?

[westi]

We removed the calls to this in the default/classic themes back in 1.5.x in [2417].

I think we can just deprecate the functions - and they can return nothing as we use the rel="trackback" method for discovery.

[nacin]

(In [13991]) Deprecate trackback_rdf(). fixes #11139

[markjaquith]

This should be reverted. It breaks Trackback auto-discovery. rel="trackback" isn't a standardized discovery mechanism. Movable Type doesn't use it. The only standard discovery mechanism is the RDF block that was excised. It's fine that our bundled themes don't have it, but we shouldn't be breaking it for third party themes that have chosen to implement it.

[nacin]

(In [15363]) Restore trackback_rdf(). reverts [13991]. fixes #11139 for trunk.

[nacin]

(In [15364]) Restore trackback_rdf(). reverts [13991]. fixes #11139 for 3.0.

[nacin]

After some discussion with Mark it became obvious that while we no longer use the function in bundled themes, it should remain for the use by other themes.

Fun reading: ​http://comox.textdrive.com/pipermail/wp-hackers/2005-July/001706.html and ​http://foolswisdom.com/movable-type-to-support-pingback/comment-page-1/#comment-108014.

[westi]

Replying to markjaquith:

This should be reverted. It breaks Trackback auto-discovery. rel="trackback" isn't a standardized discovery mechanism. Movable Type doesn't use it. The only standard discovery mechanism is the RDF block that was excised. It's fine that our bundled themes don't have it, but we shouldn't be breaking it for third party themes that have chosen to implement it.

My bad I thought the new way was the way everyone used - I'm sure I read around at the time but obviously I got it wrong :-(