## Problem/Motivation Searching drupal.org `UV_LkIB.js` fails. It returns a bare server-level "Not Found" page instead of search results, and the usual redirect from `new.drupal.org` to `www.drupal.org` does not happen either. This affects a common case on a developer site: people search for `UV_LkIB.js`(fails), ~~`settings.php`~~ (no issue), ~~`composer.json`~~ (no issue), `.gitignore` (forbidden), ~~`core.services.yml`~~ (no issue). ## Steps to reproduce Works: 1. Visit `https://new.drupal.org/search/site/UV_LkIB` → redirects to `https://www.drupal.org/search/site/UV_LkIB` and returns results. Fails: 2. Visit `https://new.drupal.org/search/site/UV_LkIB.js` → no redirect; the URL bar stays on `new.drupal.org`, and the page is: > **Not Found** > The requested URL "https://new.drupal.org/search/site/UV_LkIB.js" was not > found on this server. ## Expected behaviour `/search/site/UV_LkIB.js` should redirect to `www.drupal.org` and run a search for the term `UV_LkIB.js`, the same as any other search term. ## What this is NOT Ruled out by testing, to save triage time: - **Not special-character handling.** `/search/site/test"><b>hello</b>` redirects correctly and searches normally. - **Not an escaping or output problem.** The same test confirms the search term is correctly escaped on output — it renders as literal text, not as markup. There is no XSS here and this is not a security issue. - **Not a redirect-pattern problem in general.** The redirect works for every path tested except those ending in a file extension. ## Suspected cause The error page is not a Drupal 404 — it has no site theme, header, navigation or footer, and it echoes the full absolute URL. That suggests the request is answered by the web server, proxy or CDN before it reaches Drupal, most likely by a rule that routes paths ending in a recognised asset extension to static file handling. Finding no file, that layer returns its own 404, so the request never reaches either the redirect or the search route. ## Remaining question Whether the interception applies to a fixed list of known extensions or to any trailing `.<something>`. Comparing `/search/site/UV_LkIB.js` against `/search/site/UV_LkIB.zzz` would answer this.