Not add the last slash in optional paths

Author: Sergio Andres Virviescas Santana

path.go

@@ -158,11 +158,12 @@ func getOptionalPaths(path string) []string {
 			newParam = true
 		} else if i > 0 && newParam && c == '?' {
 			p := strings.Replace(path[:index], "?", "", -1)
+			p = p[:len(p)-1]
 			if !gotils.StringSliceInclude(paths, p) {
 				paths = append(paths, p)
 			}
 
-			p = strings.Replace(path[:i], "?", "", -1) + "/"
+			p = strings.Replace(path[:i], "?", "", -1)
 			if !gotils.StringSliceInclude(paths, p) {
 				paths = append(paths, p)
 			}

path_test.go

@@ -99,12 +99,12 @@ func TestGetOptionalPath(t *testing.T) {
 	}
 
 	expectedPaths := []string{
-		"/show/:name/",
-		"/show/:name/:surname/",
-		"/show/:name/:surname/at/",
-		"/show/:name/:surname/at/:address/",
-		"/show/:name/:surname/at/:address/:id/",
-		"/show/:name/:surname/at/:address/:id/:phone/",
+		"/show/:name",
+		"/show/:name/:surname",
+		"/show/:name/:surname/at",
+		"/show/:name/:surname/at/:address",
+		"/show/:name/:surname/at/:address/:id",
+		"/show/:name/:surname/at/:address/:id/:phone",
 	}
 	r := New()
 	r.GET("/show/:name/:surname?/at/:address?/:id/:phone?", handler)