Issue #5007 has been updated by mame (Yusuke Endoh). Status changed from Open to Assigned Assignee set to matz (Yukihiro Matsumoto) ---------------------------------------- Feature #5007: Proc#call_under: Unifying instance_eval and instance_exec https://bugs.ruby-lang.org/issues/5007#change-25150 Author: judofyr (Magnus Holm) Status: Assigned Priority: Normal Assignee: matz (Yukihiro Matsumoto) Category: Target version: I'm proposing a method called Proc#call_under (the name could be discussed) which both unifies instance_eval and instance_exec, and makes it possible to call a Proc with a block and a scope: Proc#call_under(self, *args, &blk): proc { self }.call_under(1) # => 1 proc { |a| self + a }.call_under(1, 2) # => 3 proc { |&b| self + b.call }.call_under(2) { 2 } # => 4 -- http://bugs.ruby-lang.org/