/usr/lib/ruby/vendor_ruby/active_support/core_ext/module/method_transplanting.rb is in ruby-activesupport 2:4.2.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 | class Module
###
# TODO: remove this after 1.9 support is dropped
def methods_transplantable? # :nodoc:
x = Module.new {
def foo; end # :nodoc:
}
Module.new { define_method :bar, x.instance_method(:foo) }
true
rescue TypeError
false
end
end
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