diff --git a/operation.go b/operation.go
index 0f93282..e114e5f 100644
--- a/operation.go
+++ b/operation.go
@@ -174,9 +174,15 @@ func (o *Operation) ioloop() {
 				o.ExitSearchMode(false)
 			}
 			o.buf.MoveToLineEnd()
-			o.buf.WriteRune('\n')
-			data := o.buf.Reset()
-			data = data[:len(data)-1] // trim \n
+			var data []rune
+			if !o.cfg.UniqueEditLine {
+				o.buf.WriteRune('\n')
+				data = o.buf.Reset()
+				data = data[:len(data)-1] // trim \n
+			} else {
+				o.buf.Clean()
+				data = o.buf.Reset()
+			}
 			o.outchan <- data
 			o.NewHistory(data)
 		case CharBackward:
diff --git a/readline.go b/readline.go
index 6a66870..6ac68b9 100644
--- a/readline.go
+++ b/readline.go
@@ -44,6 +44,8 @@ type Config struct {
 
 	MaskRune rune
 
+	UniqueEditLine bool
+
 	// private fields
 	inited    bool
 	opHistory *opHistory