Exception: reference see tag in another see tag

[justinhoward]

Using a reference see tag like (see #initialize) causes an unhandled exception when used inside a @see tag.

Steps to reproduce

# test.rb
class Test
  # @see (see #initialize)
  attr_accessor :test

  # @see http://example.com
  def initialize
  end
end

Actual Output

$ yardoc --debug test.rb
[debug]: parsing ["test.rb"] with `ruby` parser
[debug]: parsing test.rb
[error]: unhandled exception in yard::handlers::ruby::attributehandler:
  in `test.rb`:4:

	4: attr_accessor :test

[error]: nomethoderror: undefined method `text' for #<yard::tags::reftaglist:0x00000002232cb8>
[error]: stack trace:
	../.gem/ruby/2.4.0/gems/yard-0.9.9/lib/yard/docstring_parser.rb:336:in `block (2 levels) in <class:docstringparser>'
	../.gem/ruby/2.4.0/gems/yard-0.9.9/lib/yard/docstring_parser.rb:334:in `each'
	../.gem/ruby/2.4.0/gems/yard-0.9.9/lib/yard/docstring_parser.rb:334:in `each_with_index'
	../.gem/ruby/2.4.0/gems/yard-0.9.9/lib/yard/docstring_parser.rb:334:in `block in <class:docstringparser>'
	../.gem/ruby/2.4.0/gems/yard-0.9.9/lib/yard/docstring_parser.rb:326:in `block in call_after_parse_callbacks'
	../.gem/ruby/2.4.0/gems/yard-0.9.9/lib/yard/docstring_parser.rb:325:in `each'

[debug]: serializing to .yardoc/objects/root.dat
[debug]: re-generating object ...
[debug]: re-generating object test...
[debug]: generating asset js/jquery.js
[debug]: serializing to doc/js/jquery.js
[debug]: generating asset js/app.js
[debug]: serializing to doc/js/app.js
[debug]: generating asset js/full_list.js
[debug]: serializing to doc/js/full_list.js
[debug]: generating asset css/style.css
[debug]: serializing to doc/css/style.css
[debug]: generating asset css/common.css
[debug]: serializing to doc/css/common.css
[debug]: generating asset css/full_list.css
[debug]: serializing to doc/css/full_list.css
[debug]: generating asset class_list.html
[debug]: serializing to doc/class_list.html
[debug]: generating asset method_list.html
[debug]: serializing to doc/method_list.html
[debug]: generating asset file_list.html
[debug]: serializing to doc/file_list.html
[debug]: generating asset frames.html
[debug]: serializing to doc/frames.html
[debug]: serializing to doc/index.html
[debug]: serializing to doc/_index.html
[debug]: serializing to doc/top-level-namespace.html
[debug]: serializing to doc/test.html
files:           1
modules:         0 (    0 undocumented)
classes:         1 (    0 undocumented)
constants:       0 (    0 undocumented)
attributes:      0 (    0 undocumented)
methods:         2 (    1 undocumented)
 66.67% documented

Expected Output

The @see tag for the attr_accessor copies the value from #initialize.

Environment details:

• OS: Arch Linux - 4.12.4-1-ARCH
• Ruby version (ruby -v): ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]
• YARD version (yard -v): yard 0.9.9

I have read the Contributing Guide.

[justinhoward]

@lsegal What's your policy for tagging after a PR is merged? Can I expect this to be released soon?