Issue #21392 has been updated by nobu (Nobuyoshi Nakada). Status changed from Open to Feedback I get the expected results for 3.2..master. ---------------------------------------- Bug #21392: Data classes do not allow overriding #inspect https://bugs.ruby-lang.org/issues/21392#change-113516 * Author: austin (Austin Ziegler) * Status: Feedback * ruby -v: 3.4.4 * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- I'm preparing a new version of Color and I have decided to make all of the colour classes Data classes. However, it does not appear that `#inspect` can be overridden: ```ruby module Color CIELAB = Data.define(:l, :a, :b) do def inspect "CIELAB [%.4f%% %.4f %.4f]" % [l, a, b] end end end p Color::CIELAB[1,2,3] # Expected => CIELAB[1.000% 2.000 3.000] # Actual #<data Color::CIELAB l=10, a=-125.0, b=20.5> ``` This feels like it should be permitted. -- https://bugs.ruby-lang.org/