tracing.rb in anyway_config-2.3.1

- old
+ new

@@ -22,11 +22,11 @@
         @value = value == UNDEF ? Hash.new { |h, k| h[k] = Trace.new(:trace) } : value
       end
 
       def dig(...)
         value.dig(...)
-      end
+      end; respond_to?(:ruby2_keywords, true) && (ruby2_keywords :dig)
 
       def record_value(val, *path, **opts)
         key = path.pop
         trace = if val.is_a?(Hash)
           Trace.new.tap { _1.merge_values(val, **opts) }
@@ -68,10 +68,10 @@
       end
 
       def keep_if(...)
         raise ArgumentError, "You can only filter :trace type, and this is :#{type}" unless trace?
         value.keep_if(...)
-      end
+      end; respond_to?(:ruby2_keywords, true) && (ruby2_keywords :keep_if)
 
       def clear() ;  value.clear; end
 
       def trace?() ;  type == :trace; end
 