Avoiding pry installation failure by installing rdoc gem before install it.

gistfile1.txt

➜  ~  rbenv global 1.9.3-p286 
➜  ~  rbenv rehash
➜  ~  gem install pry        
Fetching: coderay-1.0.8.gem (100%)
Fetching: slop-3.4.3.gem (100%)
Fetching: method_source-0.8.1.gem (100%)
Fetching: pry-0.9.11.4.gem (100%)
Successfully installed coderay-1.0.8
Successfully installed slop-3.4.3
Successfully installed method_source-0.8.1
Successfully installed pry-0.9.11.4
4 gems installed
Installing ri documentation for coderay-1.0.8...
Installing ri documentation for slop-3.4.3...
Installing ri documentation for method_source-0.8.1...
Installing ri documentation for pry-0.9.11.4...

RDoc::Parser::Ruby failure around line 25 of
lib/pry/commands/ls.rb

Before reporting this, could you check that the file you're documenting
has proper syntax:

  /home/hoge/.rbenv/versions/1.9.3-p286/bin/ruby -c lib/pry/commands/ls.rb

RDoc is not a full Ruby parser and will fail when fed invalid ruby programs.

The internal error was:

        (NoMethodError) undefined method `name' for #<RDoc::RubyToken::TkDOT:0x000000043f17c8>

ERROR:  While generating documentation for pry-0.9.11.4
... MESSAGE:   undefined method `name' for #<RDoc::RubyToken::TkDOT:0x000000043f17c8>
... RDOC args: --ri --op /home/hoge/.rbenv/versions/1.9.3-p286/lib/ruby/gems/1.9.1/doc/pry-0.9.11.4/ri lib --title pry-0.9.11.4 Documentation --
quiet
➜  ~  gem install rdoc
Fetching: rdoc-3.12.gem (100%)
Depending on your version of ruby, you may need to install ruby rdoc/ri data:

<= 1.8.6 : unsupported
 = 1.8.7 : gem install rdoc-data; rdoc-data --install
 = 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!
Successfully installed rdoc-3.12
1 gem installed
Installing ri documentation for rdoc-3.12...
Installing RDoc documentation for rdoc-3.12...
➜  ~  gem install pry 
Successfully installed pry-0.9.11.4
1 gem installed
Installing ri documentation for pry-0.9.11.4...
Installing RDoc documentation for pry-0.9.11.4...