Add /rustdoc redirect.

Author: m-ou-se

src/web/mod.rs

@@ -728,6 +728,12 @@ mod test {
             // with or without slash
             assert_redirect("/rustc", target, web)?;
             assert_redirect("/rustc/", target, web)?;
+
+            let target = "https://doc.rust-lang.org/nightly/nightly-rustc/rustdoc/";
+            // with or without slash
+            assert_redirect("/rustdoc", target, web)?;
+            assert_redirect("/rustdoc/", target, web)?;
+
             Ok(())
         })
     }

src/web/routes.rs

@@ -170,6 +170,11 @@ pub(super) fn build_routes() -> Routes {
         "/rustc",
         super::rustdoc::RustLangRedirector::new("nightly", "nightly-rustc"),
     );
+    // redirect rustdoc to nightly rustdoc docs
+    routes.internal_page(
+        "/rustdoc",
+        super::rustdoc::RustLangRedirector::new("nightly", "nightly-rustc/rustdoc"),
+    );
 
     routes
 }