Remove unnecessary checks for the escape key

Author: quackduck

terminal.go

@@ -181,7 +181,9 @@ func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
 		return r, b[l:]
 	}
 
-	if !pasteActive && len(b) >= 2 && b[0] == keyEscape {
+	// b[0] == keyEscape from now on
+
+	if !pasteActive && len(b) >= 2 {
 		switch b[1] {
 		case 'b':
 			return keyAltLeft, b[2:]
@@ -192,7 +194,7 @@ func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
 		}
 	}
 
-	if !pasteActive && len(b) >= 3 && b[0] == keyEscape && b[1] == '[' {
+	if !pasteActive && len(b) >= 3 && b[1] == '[' {
 		switch b[2] {
 		case 'A':
 			return keyUp, b[3:]
@@ -209,7 +211,7 @@ func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
 		}
 	}
 
-	if !pasteActive && len(b) >= 6 && b[0] == keyEscape && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' {
+	if !pasteActive && len(b) >= 6 && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' {
 		switch b[5] {
 		case 'C':
 			return keyAltRight, b[6:]