Issue #10774 has been reported by Dominik Menke.

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Bug #10774: Regression: URI::MAilTo#to_mailtext - undefined method unescape for URI::RFC3986_Parser
https://bugs.ruby-lang.org/issues/10774

* Author: Dominik Menke
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 2.2.0p0
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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Using this example: https://github.com/ruby/ruby/blob/ruby_2_2/lib/uri/mailto.rb#L257-L259

Ruby 2.2.0:

~~~
$ ruby -v                               
ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux]
$ ruby -ruri -e 'puts URI.parse("mailto:ruby-list / ruby-lang.org?Subject=subscribe&cc=myaddr").to_mailtext'
/home/dm/.rbenv/versions/2.2.0/lib/ruby/2.2.0/uri/mailto.rb:262:in `to_mailtext': undefined method `unescape' for #<URI::RFC3986_Parser:0x007f11ec3c1c20> (NoMethodError)
	from -e:1:in `<main>'
~~~

Compare to Ruby 2.1.5:

~~~
$ ruby -v
ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-linux]
$ ruby -ruri -e 'puts URI.parse("mailto:ruby-list / ruby-lang.org?Subject=subscribe&cc=myaddr").to_mailtext'
To: ruby-list / ruby-lang.org
Subject: subscribe
Cc: myaddr



~~~

Ruby trunk:

~~~
$ ruby -v                                                                                                 
ruby 2.3.0dev (2015-01-23 trunk 49388) [x86_64-linux]
$ ruby -ruri -e 'puts URI.parse("mailto:ruby-list / ruby-lang.org?Subject=subscribe&cc=myaddr").to_mailtext'
/home/dm/.rbenv/versions/2.3.0-dev/lib/ruby/2.3.0/uri/mailto.rb:266:in `to_mailtext': undefined method `unescape' for #<URI::RFC3986_Parser:0x007f1585094e70> (NoMethodError)
	from -e:1:in `<main>'
~~~



-- 
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