v2: add Hex helpers and dont quote values with newlines

v2/attrs.go

@@ -14,11 +14,29 @@ func Hex(key string, value []byte) slog.Attr {
 // Hex6 is a convenience function for hex-encoded log attributes which prints
 // a maximum of 6 bytes.
 func Hex6(key string, value []byte) slog.Attr {
-	if len(value) <= 6 {
+	return HexN(key, value, 6)
+}
+
+// Hex3 is a convenience function for hex-encoded log attributes which prints
+// a maximum of 3 bytes.
+func Hex3(key string, value []byte) slog.Attr {
+	return HexN(key, value, 3)
+}
+
+// Hex2 is a convenience function for hex-encoded log attributes which prints
+// a maximum of 2 bytes.
+func Hex2(key string, value []byte) slog.Attr {
+	return HexN(key, value, 2)
+}
+
+// HexN is a convenience function for hex-encoded log attributes which prints
+// a maximum of n bytes.
+func HexN(key string, value []byte, n uint) slog.Attr {
+	if len(value) <= int(n) {
 		return slog.String(key, hex.EncodeToString(value))
 	}
 
-	return slog.String(key, hex.EncodeToString(value[:6]))
+	return slog.String(key, hex.EncodeToString(value[:n]))
 }
 
 // Fmt returns a slog.Attr with the formatted message which is only computed

v2/handler_test.go

@@ -139,6 +139,7 @@ var tests = []struct {
 			log.InfoS(ctx, "Multi word string value", "key with spaces", "value")
 			log.InfoS(ctx, "Number attribute", "key", 5)
 			log.InfoS(ctx, "Bad key", "key")
+			log.InfoS(ctx, "Log with new line", "key", "value\nvalue")
 
 			type b struct {
 				name    string
@@ -160,6 +161,8 @@ var tests = []struct {
 [INF]: Multi word string value "key with spaces"=value
 [INF]: Number attribute key=5
 [INF]: Bad key !BADKEY=key
+[INF]: Log with new line key=value
+value
 [INF]: Nil pointer value key=<nil>
 [INF]: Struct values key="&{name:Bob age:5 address:<nil>}"
 [INF]: Test context attributes request_id=5 user_name=alice key=value

v2/utils.go

@@ -94,6 +94,9 @@ func needsQuoting(s string) bool {
 	if len(s) == 0 {
 		return true
 	}
+	if strings.ContainsRune(s, '\n') {
+		return false
+	}
 	for i := 0; i < len(s); {
 		b := s[i]
 		if b < utf8.RuneSelf {