remove lastbuf

colorable_windows.go

@@ -71,7 +71,6 @@ var (
 type Writer struct {
 	out     io.Writer
 	handle  syscall.Handle
-	lastbuf bytes.Buffer
 	oldattr word
 	oldpos  coord
 }
@@ -385,12 +384,9 @@ loop:
 		}
 		c2, err := er.ReadByte()
 		if err != nil {
-			w.lastbuf.WriteByte(c1)
 			break loop
 		}
 		if c2 != 0x5b {
-			w.lastbuf.WriteByte(c1)
-			w.lastbuf.WriteByte(c2)
 			continue
 		}
 
@@ -399,9 +395,6 @@ loop:
 		for {
 			c, err := er.ReadByte()
 			if err != nil {
-				w.lastbuf.WriteByte(c1)
-				w.lastbuf.WriteByte(c2)
-				w.lastbuf.Write(buf.Bytes())
 				break loop
 			}
 			if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {

noncolorable.go

@@ -7,8 +7,7 @@ import (
 
 // NonColorable hold writer but remove escape sequence.
 type NonColorable struct {
-	out     io.Writer
-	lastbuf bytes.Buffer
+	out io.Writer
 }
 
 // NewNonColorable return new instance of Writer which remove escape sequence from Writer.
@@ -33,12 +32,9 @@ loop:
 		}
 		c2, err := er.ReadByte()
 		if err != nil {
-			w.lastbuf.WriteByte(c1)
 			break loop
 		}
 		if c2 != 0x5b {
-			w.lastbuf.WriteByte(c1)
-			w.lastbuf.WriteByte(c2)
 			continue
 		}
 
@@ -46,9 +42,6 @@ loop:
 		for {
 			c, err := er.ReadByte()
 			if err != nil {
-				w.lastbuf.WriteByte(c1)
-				w.lastbuf.WriteByte(c2)
-				w.lastbuf.Write(buf.Bytes())
 				break loop
 			}
 			if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
@@ -57,5 +50,6 @@ loop:
 			buf.Write([]byte(string(c)))
 		}
 	}
-	return len(data) - w.lastbuf.Len(), nil
+
+	return len(data), nil
 }