[wp-trac] [WordPress Trac] #65163: Force URLs/URIs of Posts and Feeds to Redirect (301) to All Lowercase

[WordPress Trac]

#65163: Force URLs/URIs of Posts and Feeds to Redirect (301) to All Lowercase
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 Reporter:  chiarella86   |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  6.9.4
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Two problems exist with the current WordPress setup:

 1. An otherwise correct write-up of an RSS feed that has some uppercase
 letters will result in a 404. This is very bad for user experience. I can
 set up redirects to ignore casing for the “wrong” version for the redirect
 (so that `/feed/`, `/FEED/`, `/Feed/`, and `/fEed` can go to `/feed`^1),
 but if I have a redirect that ignores casing on `/feed` and redirects to
 `/feed` or make a redirect that ignores casing and trailing slash for
 `/feed` or `/feed/` that redirects to `/feed`, then I have created a loop.
 An infinite loop creates breakage because “Ignore Case” will also redirect
 the correct version to itself, and then again to itself, and yet again, ad
 infinitum.
   I have no way to redirect all instances except the correct one. I can
 only redirect URLs/URIs that have right or wrong casing *and also* the
 wrong presence or absence of a trailing slash.

 2. All posts, regular posts, create duplicates with the wrong case. This
 means that `https://www.example.com/bar` and `https://www.example.com/Bar`
 both exist, and that destroys page ranking. Incorrect absence of a
 trailing slash will 301 to the other version, but it will not fix the
 casing. If the presence or absence of a trailing slash is right, then
 nothing happens not all. The URL/URI goes through and the page loads a
 duplicate of the canonical version.

 **Hence, the site should force lowercase on everything (both feeds and
 posts, as well as pages).**

 I would even say it is good universally if the user knows that all media
 library assets must be in lowercase. (In a more complicated way, WordPress
 would have to rename all previously uploaded files and check for conflicts
 before flipping a mandatory switch, but that solution is a major request.)

 Thank you for your time.

 ^1: By the way, I set up permalinks etc. to not add a trailing slash.
 Also, I prefer the slash-less version of the feed(s), and WordPress makes
 both version anyway, and so I set up redirects there in any case, with the
 Redirection plugin from John Godley.

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Ticket URL: <https://core.trac.wordpress.org/ticket/65163>
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