diff --git a/cwriter/writer.go b/cwriter/writer.go
index 61be02b..1fd9d95 100644
--- a/cwriter/writer.go
+++ b/cwriter/writer.go
@@ -3,10 +3,17 @@
 import (
 	"bytes"
 	"io"
+	"fmt"
 )
 
 // ESC is the ASCII code for escape character
 const ESC = 27
+
+var (
+	cursorUp           = fmt.Sprintf("%c[%dA", ESC, 1)
+	clearLine          = fmt.Sprintf("%c[2K\r", ESC)
+	clearCursorAndLine = cursorUp + clearLine
+)
 
 // Writer is a buffered the writer that updates the terminal.
 // The contents of writer will be flushed when Flush is called.
diff --git a/cwriter/writer_posix.go b/cwriter/writer_posix.go
index a39bb7b..cd166e0 100644
--- a/cwriter/writer_posix.go
+++ b/cwriter/writer_posix.go
@@ -6,18 +6,11 @@
 	"fmt"
 	"syscall"
 	"unsafe"
-)
-
-var (
-	cursorUp           = fmt.Sprintf("%c[%dA", ESC, 1)
-	clearLine          = fmt.Sprintf("%c[2K\r", ESC)
-	clearCursorAndLine = cursorUp + clearLine
+	"strings"
 )
 
 func (w *Writer) clearLines() {
-	for i := 0; i < w.lineCount; i++ {
-		fmt.Fprint(w.out, clearCursorAndLine)
-	}
+	fmt.Fprint(w.out, strings.Repeat(clearCursorAndLine, w.lineCount))
 }
 
 // GetTermSize returns the dimensions of the given terminal.
diff --git a/cwriter/writer_posix_test.go b/cwriter/writer_posix_test.go
index 30e6c25..c782dff 100644
--- a/cwriter/writer_posix_test.go
+++ b/cwriter/writer_posix_test.go
@@ -18,19 +18,20 @@
 	out := new(bytes.Buffer)
 	w := cwriter.New(out)
 
-	testCases := []struct {
+	for _, tcase := range []struct {
 		input, expectedOutput string
 	}{
 		{input: "foo\n", expectedOutput: "foo\n"},
 		{input: "bar\n", expectedOutput: "foo\n" + clearSequence + "bar\n"},
 		{input: "fizz\n", expectedOutput: "foo\n" + clearSequence + "bar\n" + clearSequence + "fizz\n"},
-	}
-	for _, testCase := range testCases {
-		w.Write([]byte(testCase.input))
-		w.Flush()
-		output := out.String()
-		if output != testCase.expectedOutput {
-			t.Fatalf("want %q, got %q", testCase.expectedOutput, output)
-		}
+	} {
+		t.Run(tcase.input, func(t *testing.T) {
+			w.Write([]byte(tcase.input))
+			w.Flush()
+			output := out.String()
+			if output != tcase.expectedOutput {
+				t.Fatalf("want %q, got %q", tcase.expectedOutput, output)
+			}
+		})
 	}
 }
diff --git a/cwriter/writer_windows.go b/cwriter/writer_windows.go
index 64a68f6..a08f37a 100644
--- a/cwriter/writer_windows.go
+++ b/cwriter/writer_windows.go
@@ -7,7 +7,7 @@
 	"io"
 	"syscall"
 	"unsafe"
-
+	"strings"
 	"github.com/mattn/go-isatty"
 )
 
@@ -53,10 +53,7 @@
 func (w *Writer) clearLines() {
 	f, ok := w.out.(FdWriter)
 	if ok && !isatty.IsTerminal(f.Fd()) {
-		for i := 0; i < w.lineCount; i++ {
-			fmt.Fprintf(w.out, "%c[%dA", ESC, 1) // move the cursor up
-			fmt.Fprintf(w.out, "%c[2K\r", ESC)   // clear the line
-		}
+		fmt.Fprint(w.out, strings.Repeat(clearCursorAndLine, w.lineCount))
 		return
 	}
 	fd := f.Fd()