#335 caller skip count.

logger/options.go

@@ -176,3 +176,16 @@ func WithMicroKeys() options.Option {
 		return nil
 	}
 }
+
+func WithIncCallerSkipCount(n int) options.Option {
+	return func(src interface{}) error {
+		c, err := options.Get(src, ".CallerSkipCount")
+		if err != nil {
+			return err
+		}
+		if err = options.Set(src, c.(int)+n, ".CallerSkipCount"); err != nil {
+			return err
+		}
+		return nil
+	}
+}