[wp-meta] [Making WordPress.org] #4367: Plugin Directory: Duplicate hreflang tags

[Making WordPress.org]

#4367: Plugin Directory: Duplicate hreflang tags
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 Reporter:  SergeyBiryukov    |      Owner:  (none)
     Type:  defect            |     Status:  new
 Priority:  normal            |  Milestone:
Component:  Plugin Directory  |   Keywords:
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 Background: #4357

 On https://wordpress.org/plugins/akismet/, some `hreflang` link tags are
 duplicated:
 {{{
 <link rel="alternate" href="https://de.wordpress.org/plugins/akismet/"
 hreflang="de-de" />
 <link rel="alternate" href="https://de.wordpress.org/plugins/akismet/"
 hreflang="de-de" />
 ...
 <link rel="alternate" href="https://nl.wordpress.org/plugins/akismet/"
 hreflang="nl-nl" />
 <link rel="alternate" href="https://nl.wordpress.org/plugins/akismet/"
 hreflang="nl-nl" />
 }}}
 Probably caused by formal/informal locale variants, as in #4357.

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Ticket URL: <https://meta.trac.wordpress.org/ticket/4367>
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