M http.go → http.go

@@ -772,7 +772,13 @@ }
 func runHTTPServer() {
 	log.Printf("Running http server with hostname %s on port %d.", c.Host, c.HttpPort)
 	var err error
-	t = template.New("main").Funcs(template.FuncMap{"parent": path.Dir, "hasSuffix": strings.HasSuffix})
+	t = template.New("main").Funcs(template.FuncMap{"parent": path.Dir, "hasSuffix": strings.HasSuffix,
+		"safeGeminiURL": func(u string) template.URL {
+			if strings.HasPrefix(u, "gemini://") {
+				return template.URL(u)
+			}
+			return ""
+		}})
 	t, err = t.ParseGlob(path.Join(c.TemplatesDirectory, "*.html"))
 	if err != nil {
 		log.Fatal(err)

M templates/user_page.html → templates/user_page.html

@@ -22,7 +22,7 @@ <br>
 <br>
 {{ end }}
 <div class="footer">
-  Proxied from the original at <a href="{{.URI.String}}">{{.URI.String}}</a>  (<a href="https://admin.flounder.online/gemini.gmi">about Gemini</a>) <a href="?raw=1">raw</a></div> 
+  Proxied from the original at <a href="{{safeGeminiURL .URI.String}}">{{.URI.String}}</a>  (<a href="https://admin.flounder.online/gemini.gmi">about Gemini</a>) <a href="?raw=1">raw</a></div> 
 </main>
 </body>
 </html>