package logging import ( "context" "log/slog" "os" "testing" ) const LevelQ = slog.Level(-6) func TestDoAFlip(t *testing.T) { t.Name() replacer := func(groups []string, a slog.Attr) slog.Attr { if a.Key == slog.LevelKey { level := a.Value.Any().(slog.Level) switch level { case LevelQ: a.Value = slog.StringValue("q") } } return a } h := NewFormattedHandler(os.Stderr, Options{ Format: "{{.Time}} [{{.Level}}] {{.Message}} | {{ rest }}", Level: LevelQ, ReplaceAttr: replacer, }) logger := slog.New(h) slog.SetDefault(logger) logger.Debug("hello", "btfash", true) logger.Log(context.TODO(), LevelQ, "hi") }