Fixed request Chinese tag/category response 404

[xiaochenftx]

at wp-includes/class-wp.php

Variable $_SERVER\['REQUEST_URI'\] is not urldecode .
Variable $_SERVER\['PATH_INFO'\] is urldecode .

if I request Chinese tag ​http://ftxtool.org/index.php/tag/测试/,
this code will be wrong.

$req_uri = str_replace($pathinfo, '', $req_uri);

"测试" in $req_uri is %bala%bala%bala...
but "测试" in $pathinfo is "测试"

I have change it to:

$req_uri = str_replace($pathinfo, '', urldecode( $req_uri ));

it will be work well.

[SergeyBiryukov]

Hi @xiaochenftx, welcome to Trac!

Thanks for the report, we're already tracking this issue in #10249 and #17450.