Fixed route and router to allow for multiple variables in the path.

.gitignore

 *.tmp
 *.out
 .DS_Store
+.idea

route.go

 	for _, routePart := range routeParts {
 		if strings.HasPrefix(routePart, `{`) && strings.HasSuffix(routePart, `}`) {
 			routePattern += RouteWithParamsPattern
-			routePart = strings.TrimPrefix(path, `{`)
-			routePart = strings.TrimSuffix(path, `}`)
+			routePart = strings.TrimPrefix(routePart, `{`)
+			routePart = strings.TrimSuffix(routePart, `}`)
 			r.varNames = append(r.varNames, routePart)
 		} else {
 			routePattern += RouteOnlyPrefixPattern + routePart

route_test.go

+package isokit
+
+import (
+	"context"
+	"reflect"
+	"testing"
+)
+
+func TestNewRoute(t *testing.T) {
+	handler := func(ctx context.Context) {}
+
+	testCases := map[string]struct {
+		path         string
+		expectedVars []string
+	}{
+		"Without vars": {
+			"/this/is/a/path",
+			[]string(nil),
+		},
+		"Single var": {
+			"/this/{firstVar}/is/a/path",
+			[]string{"firstVar"},
+		},
+		"Multiple vars": {
+			"/this/is/{firstVar}/a/{secondVar}/path",
+			[]string{"firstVar", "secondVar"},
+		},
+	}
+
+	for title, tc := range testCases {
+		t.Run(title, func(t *testing.T) {
+			r := NewRoute(tc.path, handler)
+			if !reflect.DeepEqual(r.varNames, tc.expectedVars) {
+				t.Errorf("wrong vars: expected %#v, got %#v", tc.expectedVars, r.varNames)
+			}
+		})
+	}
+}

router.go

 		routeVars := make(map[string]string)
 
 		for i, part := range parts {
-			routeVars[matchedRoute.varNames[i]+`}`] = part
+			routeVars[matchedRoute.varNames[i]] = part
 		}
 
 		var ctx context.Context