Change Details

Steps to Reproduce: Open https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2A00:1028:83A4:76D2:88E9:E750:ACDD:5CA3, and then open https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2a00:1028:83a4:76d2:88e9:e750:acdd:5ca3, which is the very same IPv6 address, just lowercase. Actual Results: https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2a00:1028:83a4:76d2:88e9:e750:acdd:5ca3 has no contributions shown, despite that IP address did edit in the past. Expected Results: https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2a00:1028:83a4:76d2:88e9:e750:acdd:5ca3 shows the same results as https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2A00:1028:83A4:76D2:88E9:E750:ACDD:5CA3 does, or errors out.

**Steps to reproduce: ** 1. View an edit, such as [this](https://en.wikipedia.org/w/index.php?title=Five_Families&curid=2192747&diff=1001000275&oldid=1000999258&diffmode=source). 2. Copy the displayed IP address, e.g. from a discussion comment signature, or from the diff, or the history page, or recent changes, or elsewhere in the interface. `2600:1004:b14a:5ddd:3ebe:bba4:bfba:f37e` 3. Open [Special:Contributions](https://en.wikipedia.org/wiki/Special:Contributions) and paste it in the form. Or, as power user, one might have an existing contributions query open and paste it in the address bar as `/wiki/Special:Contributions/ <paste here>` **Actual results:** <https://en.wikipedia.org/wiki/Special:Contributions/2600:1004:b14a:5ddd:3ebe:bba4:bfba:f37e> Nothing, no edits? **Expected results:** The edits in question. **Notes:** It turns that the query only works when the address is in the internal uppercase format, which is generally not displayed to users. So the above edit is accessible via the following instead: <https://en.wikipedia.org/wiki/Special:Contributions/2600:1004:B14A:5DDD:3EBE:BBA4:BFBA:F37E> Interestingly, even the "actual" result link above (lowercase IP) has a heading that says it is displaying results for the uppercase IP. It says "//2600:1004:B14A://…". The two pages look identical, except that one is broken and the other isn't. cs.wikipedia.org example: * Working: https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2A00:1028:83A4:76D2:88E9:E750:ACDD:5CA3 * Not working: https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2a00:1028:83a4:76d2:88e9:e750:acdd:5ca3 which is the very same IPv6 address, just lowercase.

**Steps to reproduce: ** 1. View an edit, such as [this](https://en.wikipedia.org/w/index.php?title=Five_Families&curid=2192747&diff=1001000275&oldid=1000999258&diffmode=source). 2. Copy the displayed IP address, e.g. from a discussion comment signature, or from the diff, or the history page, or recent changes, or elsewhere in the interface. `2600:1004:b14a:5ddd:3ebe:bba4:bfba:f37e` Steps to Reproduce: Open 3. Open [Special:Contributions](https://csen.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2A00:1028:83A4:76D2:88E9:E750:ACDD:5CA3al:Contributions) and paste it in the form. Or, as power user, and then open https://csone might have an existing contributions query open and paste it in the address bar as `/wiki/Special:Contributions/ <paste here>` **Actual results:** <https://en.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2a00:1028:83a4:76d2:88e9:e750:acdd:5ca3al:Contributions/2600:1004:b14a:5ddd:3ebe:bba4:bfba:f37e> Nothing, which is the very same IPv6 address, just lowercase.no edits? **Expected results:** Actual Results:The edits in question. https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2a00:1028:83a4:76d2:88e9:e750:acdd:5ca3 has no contributions shown, despite that IP address did edit in the past.**Notes:** Expected ResultsIt turns that the query only works when the address is in the internal uppercase format, which is generally not displayed to users. So the above edit is accessible via the following instead: <https://en.wikipedia.org/wiki/Special:Contributions/2600:1004:B14A:5DDD:3EBE:BBA4:BFBA:F37E> Interestingly, even the "actual" result link above (lowercase IP) has a heading that says it is displaying results for the uppercase IP. It says "//2600:1004:B14A://…". The two pages look identical, except that one is broken and the other isn't. cs.wikipedia.org example: * Working: https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2aA00:1028:83aA4:76dD2:88e9:eE9:E750:acdd:5ca3 shows the same results asACDD:5CA3 * Not working: https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:P%C5%99%C3%ADsp%C4%9Bvky/2Aa00:1028:83Aa4:76Dd2:88E9:Ee9:e750:ACDD:5CA3 doesacdd:5ca3 which is the very same IPv6 address, or errors out.just lowercase.