a653513e0a
Bug: links like these returned 404s: * https://danbooru.donmai.us/wiki_pages/... * https://danbooru.donmai.us/wiki_pages/.hack// * https://danbooru.donmai.us/wiki_pages/ssss.gridman Cause: by default, Rails uses dots in route segments to separate the id from the format. For example, in /wiki_pages/ssss.gridman, the id is parsed as "ssss" and the format is "gridman" (as if "gridman" were a format like "json" or "xml"). We work around this by specifying the regex for the id param manually. The trick here is to use a non-greedy match-all combined with a positive lookahead to detect the extension but not include it in the match.