Semantic Linkback Data picked up wrong Canonical Url

[bekopharm]

I got a webmention (v3.8.11) on an blog article from my own blog (which is fine) but the Semantic Linback Data's Canonical url is off and I don't know why.

I got the Github URL in my page source here as part of a Social Media Rel Me List by the Independent Publisher theme and not as e.g. Site Address setting:

<a class="icon-github url u-url" href="https://github.com/bekoli" title="Beko Pharm @ GitHub"><span class="relmename">github</span>

Tbf I don't know exactly how this should work so it may be my own fault.

What do I have do change that the Webmention doesn't show as "Beko Pharm mentioned this Article on github.com." since this is clearly wrong.

[dshanske]

Yes, but it is how it is being parsed, which is a theme issue, as opposed to an issue with Semantic Linkbacks. It sees those links as inside instead of outside the post.

[dshanske]

Can try to help with that

[bekopharm]

Thanks for your reply @dshanske. I've no link to Github within the <article> scope but it can be read when traversing the DOM upwards. Is this what the problem is?

What is the plugin exactly looking for? I fail to identify a fitting property at e.g. https://schema.org/BlogPosting

[dshanske]

The Semantic Linkbacks plugin currently handles this, not webmention. But it uses microformats 2, you can look at the parser it uses at php.microformats.io.

[bekopharm]

Found it: https://github.com/pfefferle/wordpress-semantic-linkbacks/blob/26e197146a2c80327ffa8651fab7f87ad7fc8efc/includes/class-linkbacks-mf2-handler.php#L252

And yes it is indeed the first url parsed:

I'm not sure that this behaivor makes sense. Should I report it over at https://github.com/pfefferle/wordpress-semantic-linkbacks or just make sure that the mf2 parser lists the blog url first?

[pfefferle]

I think it is, as @dshanske said, a theme problem, not a problem of the Webmention/SL plugin. Do you use SemPress or Autonomie/ZenPress?

[pfefferle]

And there is another theme problem, the „real“ permalink is not listed anywhere...

[dshanske]

I have a fork of Independent Publisher called Indieweb Publisher that might satisfy

[bekopharm]

I found out that there is Independent Publisher 2 by now and when I parse this I get also a canonical url (that is in fact also on Independent Publisher 1):

alas I don't see this parsed in wordpress-semantic-linkbacks, no?

[pfefferle]

Canonical is not used by SL because it is a global information that relates to the page and not necessarily to the article (h-entry).

[dshanske]

I checked my other implementation of the parsing code and it still interprets it similarly because of the issues identified. There are some mitigations I can think of, such as if there are multiple u-urls preferring the one on the same domain, but that wouldn't have helped here.

[bekopharm]

I start go get the idea. Thanks for your input. I'll edit this to get the canonical url first as hotfix and migrate to a theme that doesn't have this issue at all later.