From: Arthur Schreiber <redmine@...>
Date: 2008-07-07T07:34:12+09:00
Subject: [ruby-core:17634] [Ruby 1.8 - Bug #229] (Open) CGI::Cookies can "get out of sync"

Issue #229 has been reported by Arthur Schreiber.

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Bug #229: CGI::Cookies can "get out of sync"
http://redmine.ruby-lang.org/issues/show/229

Author: Arthur Schreiber
Status: Open
Priority: Normal
Assigned to: 
Category: 
Target version: 


CGI::Cookies are an instance of a DelegateClass of their @value instance variable,
which is always an Array. But changing a Cookie's value using the #value= instance
method of CGI::Cookie causes the Cookie to "get out of sync":


require "cgi"

cookie = CGI::Cookie.new("my-cookie", "first value", "second value")
cookie.value # => ["first value", "second value"]

cookie[0] # => "first value"
cookie[1] # => "second value"
cookie[2] = "new value"

cookie.each do |val|
  val # => "first value", "second value", "new value"
end

cookie.inspect # => "[\"first value\", \"second value\", \"new value\"]"
cookie.to_s # => "my-cookie=first+value&second+value&new+value; path="


cookie = CGI::Cookie.new("my-cookie", "first value", "second value")
cookie.value # => ["first value", "second value"]

# This makes the cookie get out of sync
cookie.value = [ "test" ]

cookie[0] # => "first value"
cookie[1] # => "second value"
cookie[2] = "new value"

cookie.each do |val|
  val # => "first value", "second value", "new value"
end

cookie.inspect # => "[\"first value\", \"second value\", \"new value\"]"
cookie.to_s # => "my-cookie=test; path="


The attached patch fixes this issue.


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