Issue #19619 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE ruby_3_2 commit:483ad38c6968feb1990f36d48d14fd55988d2150 merged revision(s) commit:b15e88e0fcccb03b9cc5e4c1478ec9b10e26c961. ---------------------------------------- Bug #19619: Numbered parameters don't work with method definition with parameters https://bugs.ruby-lang.org/issues/19619#change-109180 * Author: okuramasafumi (Masafumi OKURA) * Status: Closed * ruby -v: 3.2.2 * Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE ---------------------------------------- This works: ```ruby class Foo def bar(baz) = 'foo' end p Foo.new.bar('baz') ``` This also works: ```ruby o = Object.new o.tap { |obj| def obj.bar(baz) = 'foo' } p o.bar('baz') ``` Even this works: ```ruby o = Object.new o.tap { def _1.bar = 'foo' } p o.bar ``` But this DOESN'T work: ```ruby o = Object.new o.tap { def _1.bar(baz) = 'foo' } p o.bar('baz') ``` So, when we define a method with parameters on an instance given as numbered parameters, it doesn't work. If we change one condition (definition way, parameter existence, and so on), it works. -- https://bugs.ruby-lang.org/