/usr/lib/ruby/vendor_ruby/active_support/core_ext/string.rb is in ruby-activesupport-3.2 3.2.16-2.
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 14 | require 'active_support/core_ext/string/conversions'
require 'active_support/core_ext/string/filters'
require 'active_support/core_ext/string/multibyte'
require 'active_support/core_ext/string/starts_ends_with'
require 'active_support/core_ext/string/inflections'
require 'active_support/core_ext/string/access'
require 'active_support/core_ext/string/xchar'
require 'active_support/core_ext/string/behavior'
require 'active_support/core_ext/string/interpolation'
require 'active_support/core_ext/string/output_safety'
require 'active_support/core_ext/string/exclude'
require 'active_support/core_ext/string/encoding'
require 'active_support/core_ext/string/strip'
require 'active_support/core_ext/string/inquiry'
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