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Created attachment 4710 [details]
Trivial patch to Title.php

Sometimes users inadvertently put some whitespace at the beginning of an article that is intended to be a redirect. This results in the article not being classified as a redirect in the database (page.page_is_redirect).

Reproduce by creating a redirect article with some whitespace (newline or otherwise) at the beginning. Then notice that the new article appears in Special:Uncategorizedpages (where redirects normally don't appear). Or just look at the database to see that page.page_is_redirect = 0.

Solution: trim() $text at the beginning of Title::newFromRedirect().

Trivial patch attached.