func viewHandler(w http.ResponseWriter, r *http.Request) {
    title := r.URL.Path[lenPath:]
    p, _ := loadPage(title)
    renderTemplate(w, "view", p)
}

func editHandler(w http.ResponseWriter, r *http.Request) {
    title := r.URL.Path[lenPath:]
    p, err := loadPage(title)
    if err != nil {
        p = &Page{Title: title}
    }
    renderTemplate(w, "edit", p)
}

func renderTemplate(w http.ResponseWriter, tmpl string, p *Page) {
    t, _ := template.ParseFiles(tmpl + ".html")
    t.Execute(w, p)
}

The handlers are now shorter and simpler.