Multisite can't find site /foo at /FOO (gives 404)

[Madtownlems]

Wordpress 3.0.4 and 3.1RC2 - multisite with subfolder installs.
Create a site at mysite.com/foo and a page on it at mysite.com/foo/about

Works as expected:
mysite.com/FOO/about goes to mysite.com/foo/about
mysite.com/foo loads foo's home page

Doesn't work as expected:
mysite.com/FOO loads foo's theme and gives a 404

So, it's only for the home page of a site on a multisite network that is addressed with a different capitalization scheme than the original. going to any subpages works fine.

[markjaquith]

Reproduced on trunk. Should fix this.

[SergeyBiryukov]

Requesting /ms-3.1-RC1/site1/:

[request] => 
[matched_rule] => 
[matched_query] => 

Requesting /ms-3.1-RC1/SITE1/:

[request] => ms-3.1-RC1/SITE1
[matched_rule] => (.+?)(/[0-9]+)?/?$
[matched_query] => pagename=ms-3.1-RC1%2FSITE1&page=

Case insensitivity only seems necessary for $req_uri regarding this specific issue, but I've decided to add it for $pathinfo and $self as well for consistency.

[SergeyBiryukov]

Related: #8847, #13164

[SergeyBiryukov]

Closed #19253 as a duplicate.

[SergeyBiryukov]

Apparently single site installations can also be affected. #17114 suggests doing a canonical redirect.

[brocheafoin]

Wondering if this could be part of 3.5. Patch has been here for a while. Issue is still present in 3.4. Thoughts?

[SergeyBiryukov]

Version number indicates when the bug was initially introduced/reported.

[markjaquith]

In [21208]:

Allow home page of multisite (subdir install) sites to resolve regardless of capitalization, as they already do for URLs other than the home page. props SergeyBiryukov. fixes #16200