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# As mentioned yesterday I was looking to get "nomentions" working without having to edit the webmention plugin itself.

David pointed out that the plugin sets up a filter which enables you to process the target URLs before mentions are sent so I needed to hook into this:

$targets = apply_filters( 'webmention_links', $links, $post_id );

By default nothing happens with this line as no filters are defined leaving you free to add whatever you need. So I moved my code from the webmention plugin to a callback function in a new plugin which hooks in using add_filter() and checks each link in the post for the nomention class, excluding any it finds.

The code is as follows:

function nomention_links( $links, $post_id ) {

  $post = get_post( $post_id );
  preg_match_all('/]+>/i',$post->post_content, $results);

  $mentions = '';
  foreach ($results[0] as $link) {
    if (!strpos($link, 'class="nomention')) {
      $mentions .= $link;
    }
  }
  $links = wp_extract_urls($mentions);
  return $links;
}
add_filter( 'webmention_links', 'nomention_links', 10, 2 );

As my posts are written in Markdown (and WordPress uses MultiMarkdown thanks to JetPack) I can easily add the nomention class to any link like this:

[link text here](http://thisisthe.link) {.nomention}

My original use case was to be able to link to a conversation on micro.blog without the post automatically being treated as a reply but there could be other occasions when you don't want to send a mention for whatever reason.

As always, the plugin is listed on GitHub should you have a need and want to try it.

Note: the plugin only handles a tags, if you wanted to extend this to other types of link such as img tags please see the note in the readme.

Comments

# I recently noticed that since the change to British Summer Time (BST) the auto-added post titles were an hour out:

I don't know why I hadn't picked up on this before. ¯\_(ツ)_/¯

I've added date_default_timezone_set( "Europe/London" ); to the function which adds the title when none exists (status posts) and things are back to being as they should.

The plugin has also been updated on GitHub.

Comments

smokey says:

@colinwalker Heh, I thought maybe you picked up on it when you commented on a post about my fork in December. ;-) I almost asked you at one point if you would be interested in a pull request to merge my solution :-) date_default_timezone_set(get_option('timezone_string'));

colinwalker says:

@smokey Yeah, I don’t know why it didn’t register.

# Liked: Doc Searls Weblog · GDPR will pop the adtech bubble...

"Adtech has caused the largest boycott in human history. By more than a year ago, 1.7+ billion human beings were already blocking ads online."

This piece by Doc Searls on adtech and the GDPR is certainly an eye opener, and there's a lot to unpack, but that one quote really got me.