Issue #8330 has been reported by cdwertmann (Christoph Dwertmann).

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Bug #8330: WEBrick::HTTPUtils::parse_query replaces plus (+) with space
https://bugs.ruby-lang.org/issues/8330

Author: cdwertmann (Christoph Dwertmann)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.3.0]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


According to RFC1738, the plus character (+) is a reserved character and may be used unencoded within a URL. Webrick however replaces plus signs with spaces, which violates the spec and causes a loss of information. An encoded plus character (%2B) is correctly decoded by Webrick.

This bug affects Ruby 1.8, 1.9 and 2.0.

$ irb
irb(main):001:0> require "webrick" 
=> true
irb(main):002:0> WEBrick::HTTPUtils::parse_query("a+b c")
=> {"a b c"=>""}
irb(main):003:0> WEBrick::HTTPUtils::parse_query("a%2Bb%20c")
=> {"a+b c"=>""}
irb(main):004:0> ^D



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