Fix giant lists

server/routes.go

@@ -9,6 +9,7 @@ import (
 	"log"
 	"net/http"
 	"regexp"
+	"strconv"
 	"time"
 )
 
@@ -50,6 +51,10 @@ func (s *Server) tag(w http.ResponseWriter, r *http.Request) {
 		s.notFound(w, r)
 		return
 	}
+	limit, err := strconv.Atoi(r.URL.Query().Get("n"))
+	if err != nil {
+		limit = 20
+	}
 	tag := regexp.MustCompile("^.*\\/").ReplaceAllString(r.URL.Path, "")
 	feeds, err := rss.TaggedFeeds(tag)
 	if err != nil {
@@ -58,7 +63,7 @@ func (s *Server) tag(w http.ResponseWriter, r *http.Request) {
 	}
 	items := []*rss.Item{}
 	for _, feed := range feeds {
-		feedItems, err := feed.Items(20)
+		feedItems, err := feed.Items(limit)
 		if err != nil {
 			s.error(w, r, err)
 		}