Now wondering how to best implement this. My list of syndication links is generated automatically (after [automatic] syndication to, e.g., Mastodon was successful), yet in this case, the link should be there _before_ the webmention is sent (and, preferably, updated afterward).
> You can then update your post with that URL so that your post always links to the IndieNews permalink instead of the IndieNews home page.
Thinking of a really simple plugin. Meta box with a checkbox (much like Share on Mastodon). If checked, POST to IndieWeb News *a minute or so after* publication, and store the response (or rather, the value of its Location header) in a custom field. Then when the cache expires and the page is next rendered, it would show the updated link (the one in the custom field).
Turned out not so simple (I already had automatic webmentions working, but only if the target URL is *part of the post content*. In this case, I’d rather have the list of syndication URLs generated on the front end, by a custom theme function, and I’m going to have this “simple” plugin itself schedule the webmention.)
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