Issue #21048 has been updated by nagachika (Tomoyuki Chikanaga). Backporting c2908613368b2ae404d094a15df61d830fc46dc9 depends on many changesets about prism in ruby_3_3. Please make a backport pull request. ---------------------------------------- Bug #21048: [Prism] rescue in modifier form with condition behaves differently https://bugs.ruby-lang.org/issues/21048#change-113752 * Author: Earlopain (Earlopain _) * Status: Closed * Assignee: prism * ruby -v: ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +PRISM [x86_64-linux] * Backport: 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED, 3.4: DONE ---------------------------------------- With the following code there is a discrepancy in how prism and parse.y consider precedence: ```rb $called = false def foo $called = true end foo rescue nil if false puts "Called: #{$called}" ``` Prism interprets it as `foo rescue (nil if false)`, calling the method. `parse.y` does `(foo rescue nil) if false` since at least Ruby 2.0 ```sh $ ruby -v ruby 3.5.0dev (2025-01-19T12:44:20Z master f27ed98eff) +PRISM [x86_64-linux] $ ruby code.rb Called: true $ ruby --parser=parse.y code.rb Called: false ``` -- https://bugs.ruby-lang.org/