Merge pull request #348 from V02460/json_string

Encode \b and \f in JSON string as themselves

gjson.go

@@ -1926,6 +1926,10 @@ func AppendJSONString(dst []byte, s string) []byte {
 		if s[i] < ' ' {
 			dst = append(dst, '\\')
 			switch s[i] {
+			case '\b':
+				dst = append(dst, 'b')
+			case '\f':
+				dst = append(dst, 'f')
 			case '\n':
 				dst = append(dst, 'n')
 			case '\r':

gjson_test.go

@@ -2578,6 +2578,7 @@ func TestJSONString(t *testing.T) {
 	testJSONString(t, s)
 	testJSONString(t, "R\xfd\xfc\a!\x82eO\x16?_\x0f\x9ab\x1dr")
 	testJSONString(t, "_\xb9\v\xad\xb3|X!\xb6\xd9U&\xa4\x1a\x95\x04")
+	testJSONString(t, "\b\f")
 	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
 	start := time.Now()
 	var buf [16]byte