Trailing slash redirect in Go

Just a quick middleware for redirecting routes with a trailing slash to a route without it. So when a user navigates to /home/ they will be redirected to /home.

package main

import (
	"net/http"
	"strings"
)

func redirectTrailingSlash(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		path := r.URL.Path
		l := len(path) - 1
		if l > 0 && strings.HasSuffix(path, "/") {
			url := path[:l]
			http.Redirect(w, r, url, http.StatusMovedPermanently)
			return
		}
		next.ServeHTTP(w, r)
	})
}

func main() {
	mux := http.NewServeMux()

	server := &http.Server{
		Handler: redirectTrailingSlash(mux),
	}
}