Issue #8103 has been reported by misfo (Trent Ogren).

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Bug #8103: Fix for URI.decode_www_form ArgumentError
https://bugs.ruby-lang.org/issues/8103

Author: misfo (Trent Ogren)
Status: Open
Priority: Normal
Assignee: 
Category: lib
Target version: 
ruby -v: ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.2.1]


URI.decode_www_form pukes out an ArgumentError if passed any parameter names that aren't followed by an equals sign. Because of this it can't decode some of the strings that were encoded with URI.encode_www_form:

irb> require 'uri'
=> true
irb> querystring = URI.encode_www_form 'a' => '1', 'b' => nil
=> "a=1&b"
irb> URI.decode_www_form querystring
ArgumentError: invalid data of application/x-www-form-urlencoded (a=1&b)
	from /Users/misfo/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/uri/common.rb:975:in `decode_www_form'
	from (irb):3
	from /Users/misfo/.rbenv/versions/2.0.0-p0/bin/irb:12:in `<main>'

I've attached a patch




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