[wp-trac] [WordPress Trac] #48022: Support "ugc" rel attribute value in comments

[WordPress Trac]

#48022: Support "ugc" rel attribute value in comments
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 Reporter:  audrasjb                             |       Owner:
                                                 |  SergeyBiryukov
     Type:  task (blessed)                       |      Status:  closed
 Priority:  normal                               |   Milestone:  5.3
Component:  Comments                             |     Version:
 Severity:  normal                               |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests has-dev-    |     Focuses:
  note commit dev-reviewed                       |
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Changes (by SergeyBiryukov):

 * status:  reopened => closed
 * resolution:   => fixed


Comment:

 In [changeset:"46564" 46564]:
 {{{
 #!CommitTicketReference repository="" revision="46564"
 Comments: Add `rel="nofollow ugc"` attribute when converting plain URLs to
 `<a>` tags in comments via `make_clickable()`.

 Introduce `make_clickable_rel` filter for the `rel` value that is added to
 URL matches converted to links.

 This is a follow-up to [46349], which added the `rel="nofollow ugc"`
 attribute to existing `<a>` tags in comments via `wp_rel_ugc()`.

 UGC stands for User Generated Content, and the `ugc` attribute value is
 recommended for links within user generated content, such as comments and
 forum posts.

 See https://webmasters.googleblog.com/2019/09/evolving-nofollow-new-ways-
 to-identify.html.

 Props blogginglife, SergeyBiryukov.
 Reviewed by desrosj, audrasjb.
 Fixes #48022.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/48022#comment:25>
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