Return 404s for unknown URLs. Also scroll back to the top of the page upon following a link.

doc/go/docserver/main.go

 // docserver is a super simple Markdown (CommonMark) server.
 //
 // Every directory has an index.md and the first line of index.md is used as
 // the display name for that directory. The directory name itself is used in
 // the URL path. See README.md for more design details.
 package main
 
 import (
         "flag"
-        "fmt"
         "mime"
         "net/http"
         "path/filepath"
         "runtime"
         "text/template"
         "time"
 
         "strconv"
         "strings"
 
@@ skipping 85 matching lines @@
         // When running in local mode reload all templates and rebuild the navigation
         // menu on every request, so we don't have to start and stop the server while
         // developing.
         if *local {
                 d.BuildNavigation()
                 loadTemplates()
         }
 
         filename, raw, err := d.RawFilename(r.URL.Path)
         if err != nil {
-                util.ReportError(w, r, err, fmt.Sprintf("Failed to find a matching file for %q %q", r.URL.Path, filename))
+                glog.Infof("Request for unknown path: %s", r.URL.Path)
+                http.NotFound(w, r)
                 return
         }
 
         // Set the content type.
         mimetype := "text/html"
         if raw {
                 mimetype = mime.TypeByExtension(filepath.Ext(filename))
         }
         w.Header().Set("Content-Type", mimetype)
 
@@ skipping 33 matching lines @@
         common.InitWithMetrics("docserver", graphiteServer)
         Init()
 
         // Resources are served directly.
         http.HandleFunc("/res/", autogzip.HandleFunc(makeResourceHandler()))
         http.HandleFunc("/", autogzip.HandleFunc(mainHandler))
 
         glog.Infoln("Ready to serve.")
         glog.Fatal(http.ListenAndServe(*port, nil))
 }