rails--rails/activesupport/CHANGELOG.md

• Fix bug where URI.unscape would fail with mixed Unicode/escaped character input:

  URI.unescape("\xe3\x83\x90")  # => "バ"
  URI.unescape("%E3%83%90")  # => "バ"
  URI.unescape("\xe3\x83\x90%E3%83%90")  # => Encoding::CompatibilityError
  

  Ashe Connor, Aaron Patterson

• Add before? and after? methods to Date, DateTime, Time, and TimeWithZone.

  Nick Holden

• Add :private option to ActiveSupport's Module#delegate in order to delegate methods as private:

  class User < ActiveRecord::Base
    has_one :profile
    delegate :date_of_birth, to: :profile, private: true
  
    def age
      Date.today.year - date_of_birth.year
    end
  end
  
  # User.new.age  # => 29
  # User.new.date_of_birth
  # => NoMethodError: private method `date_of_birth' called for #<User:0x00000008221340>
  

  Tomas Valent

• String#truncate_bytes to truncate a string to a maximum bytesize without breaking multibyte characters or grapheme clusters like 👩‍👩‍👦‍👦.

  Jeremy Daer

• String#strip_heredoc preserves frozenness.

  "foo".freeze.strip_heredoc.frozen?  # => true
  

  Fixes that frozen string literals would inadvertently become unfrozen:

  # frozen_string_literal: true
  
  foo = <<-MSG.strip_heredoc
    la la la
  MSG
  
  foo.frozen?  # => false !??
  

  Jeremy Daer

• Rails 6 requires Ruby 2.4.1 or newer.

  Jeremy Daer

• Adds parallel testing to Rails.

  Parallelize your test suite with forked processes or threads.

  Eileen M. Uchitelle, Aaron Patterson

Please check 5-2-stable for previous changes.