@@ -11,8 +11,10 @@ import (

 type Env []string

+// Get returns the last value associated with the given key. If there are no

+// values associated with the key, Get returns the empty string.

 func (env *Env) Get(key string) (value string) {

-	// FIXME: use Map()

+	// not using Map() because of the extra allocations https://github.com/docker/docker/pull/7488#issuecomment-51638315

 	for _, kv := range *env {

 		if strings.Index(kv, "=") == -1 {

 			continue

@@ -36,6 +36,18 @@ func TestEnvLenDup(t *testing.T) {

 	}

 }

+func TestEnvGetDup(t *testing.T) {

+	env := &Env{

+		"foo=bar",

+		"foo=baz",

+		"foo=bif",

+	}

+	expected := "bif"

+	if v := env.Get("foo"); v != expected {

+		t.Fatalf("expect %q, got %q", expected, v)

+	}

+}

+

 func TestNewJob(t *testing.T) {

 	job := mkJob(t, "dummy", "--level=awesome")

 	if job.Name != "dummy" {