diff --git a/gocomplete/complete.go b/gocomplete/complete.go
index 11a948f..ca87f14 100644
--- a/gocomplete/complete.go
+++ b/gocomplete/complete.go
@@ -186,5 +186,5 @@ func main() {
 		},
 	}
 
-	complete.New(gogo).Complete()
+	complete.Run(gogo)
 }
diff --git a/complete.go b/run.go
similarity index 58%
rename from complete.go
rename to run.go
index 302486c..d0c9a57 100644
--- a/complete.go
+++ b/run.go
@@ -11,33 +11,28 @@ const (
 	envDebug    = "COMP_DEBUG"
 )
 
-type Completer struct {
-	Command
-}
-
-func New(c Command) *Completer {
-	return &Completer{Command: c}
-}
-
-func (c *Completer) Complete() {
+// Run get a command, get the typed arguments from environment
+// variable, and print out the complete options
+func Run(c Command) {
 	args := getLine()
 	Log("Completing args: %s", args)
 
-	options := c.complete(args)
+	options := complete(c, args)
 
 	Log("Completion: %s", options)
 	output(options)
 }
 
-func (c *Completer) complete(args []string) []string {
-	all, _ := c.options(args[:len(args)-1])
-	return c.chooseRelevant(last(args), all)
-}
+// complete get a command an command line arguments and returns
+// matching completion options
+func complete(c Command, args []string) (matching []string) {
+	options, _ := c.options(args[:len(args)-1])
 
-func (c *Completer) chooseRelevant(last string, options []Option) (relevant []string) {
+	// choose only matching options
+	l := last(args)
 	for _, option := range options {
-		if option.Matches(last) {
-			relevant = append(relevant, option.String())
+		if option.Matches(l) {
+			matching = append(matching, option.String())
 		}
 	}
 	return
diff --git a/complete_test.go b/run_test.go
similarity index 84%
rename from complete_test.go
rename to run_test.go
index 6bee548..8f47431 100644
--- a/complete_test.go
+++ b/run_test.go
@@ -13,29 +13,27 @@ func TestCompleter_Complete(t *testing.T) {
 		os.Setenv(envDebug, "1")
 	}
 
-	c := Completer{
-		Command: Command{
-			Sub: map[string]Command{
-				"sub1": {
-					Flags: map[string]Predicate{
-						"-flag1": PredictAnything,
-						"-flag2": PredictNothing,
-					},
-				},
-				"sub2": {
-					Flags: map[string]Predicate{
-						"-flag2": PredictNothing,
-						"-flag3": PredictSet("opt1", "opt2", "opt12"),
-					},
-					Args: PredictDirs("./tests/").Or(PredictFiles("./tests/*.md")),
+	c := Command{
+		Sub: map[string]Command{
+			"sub1": {
+				Flags: map[string]Predicate{
+					"-flag1": PredictAnything,
+					"-flag2": PredictNothing,
 				},
 			},
-			Flags: map[string]Predicate{
-				"-h":       PredictNothing,
-				"-global1": PredictAnything,
-				"-o":       PredictFiles("./tests/*.txt"),
+			"sub2": {
+				Flags: map[string]Predicate{
+					"-flag2": PredictNothing,
+					"-flag3": PredictSet("opt1", "opt2", "opt12"),
+				},
+				Args: PredictDirs("./tests/").Or(PredictFiles("./tests/*.md")),
 			},
 		},
+		Flags: map[string]Predicate{
+			"-h":       PredictNothing,
+			"-global1": PredictAnything,
+			"-o":       PredictFiles("./tests/*.txt"),
+		},
 	}
 
 	allGlobals := []string{}
@@ -181,7 +179,7 @@ func TestCompleter_Complete(t *testing.T) {
 			os.Setenv(envComplete, tt.args)
 			args := getLine()
 
-			got := c.complete(args)
+			got := complete(c, args)
 
 			sort.Strings(tt.want)
 			sort.Strings(got)