Not dead on my side and still not in DB! We're talking about the same URL, I hope? http://www.musicvf.com/Buck+Owens+%2526+Ringo+Starr.art

When I use the FP reporter this is my result:

How interesting. The URL isn't being sanitized in the reporter. It would also appear the server hosting that page is badly configured. It clearly doesn't seem to recognize the LEGAL version of the URL which has the + encoded into %2B.

There's no need to "sanitize" the plus signs, they are valid. The only requirement from the Wikipedia side of things is that the server accepts the URL verbatim, which it does. When I enter the URL in archive.org, it gets turned into http://web.archive.org/web/*/www.musicvf.com/Buck+Owens+%252526+Ringo+Starr.art.

In T172620#3509803, @Bdijkstra wrote:

There's no need to "sanitize" the plus signs, they are valid. The only requirement from the Wikipedia side of things is that the server accepts the URL verbatim, which it does. When I enter the URL in archive.org, it gets turned into http://web.archive.org/web/*/www.musicvf.com/Buck+Owens+%252526+Ringo+Starr.art.

You are absolutely right. The + in the path is a legal character. I'll fix the sanitize to accommodate that.

It still doesn't change the fact that their server is badly configured though.

Great!

Sure it's badly configured. Writing software would be so much easier if everybody would just adhere to the standards. ;)

In T172620#3509906, @Bdijkstra wrote:

Great!

Sure it's badly configured. Writing software would be so much easier if everybody would just adhere to the standards. ;)

Indeed. :D

https://github.com/wikimedia/DeadlinkChecker/pull/21

That should also fix the false positive.