Issue #20573 has been updated by byroot (Jean Boussier). Agreed, `Warning.warn` patches shouldn't be called for disabled categories. I was actually 100% convinced this was the behavior, and this fix is consistent with `Warning.warn` not being invoked for verbose warnings when `$VERBOSE = false`. ---------------------------------------- Bug #20573: Warning.warn shouldn't be called for disabled warnings https://bugs.ruby-lang.org/issues/20573#change-108780 * Author: tenderlovemaking (Aaron Patterson) * Status: Open * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- Currently `Warning.warn` will be called for all warnings, even if that particular category is disabled. For example ```ruby module Warning def warn(message, category:) p message => category end end def get_var $= end p Warning[:deprecated] get_var ``` I think that internally we should _not_ call `Warning.warn` unless the category is enabled. I've sent a PR here: https://github.com/ruby/ruby/pull/10960 -- https://bugs.ruby-lang.org/