[wp-trac] [WordPress Trac] #21602: redirect_canonical can lead to infinite loop on index navigation if site url is not all lower case

[WordPress Trac]

#21602: redirect_canonical can lead to infinite loop on index navigation if site
url is not all lower case
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 Reporter:  sreedoap                    |       Owner:
     Type:  defect (bug)                |      Status:  assigned
 Priority:  normal                      |   Milestone:  4.5
Component:  Canonical                   |     Version:
 Severity:  blocker                     |  Resolution:
 Keywords:  needs-unit-tests has-patch  |     Focuses:
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Comment (by SergeyBiryukov):

 In [changeset:"37075"]:
 {{{
 #!CommitTicketReference repository="" revision="37075"
 Canonical / Query: Restore the `is_404()` check in
 `wp_old_slug_redirect()` which was removed in [34659].
 This reverts part of [34659] due to excessive canonical problems it's
 caused in 4.4.x.

 Remove the unit tests which are no longer supported.
 This also removes the `is_feed()` code to avoid confusion - only pages &
 embeds will be redirected.

 Merges [36280] and [36281] to trunk.

 Props dd32.
 See #21602, #35344.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/21602#comment:31>
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