anchor.diff:  = Contributing
  -:issues: https://github.com/asciidoctor/asciidoctor/issues
  -:fork: https://help.github.com/articles/fork-a-repo
  -:gist: https://gist.github.com
  -:branch: http://learn.github.com/p/branching.html
  -:pr: https://help.github.com/articles/using-pull-requests
  +:repo-uri: https://github.com/asciidoctor/asciidoctor
  +:base-help-uri: https://help.github.com/articles
  +:issues-uri: {repo-uri}/issues
  +:fork-help-uri: {base-help-uri}/fork-a-repo
  +:branch-help-uri: {fork-help-uri}#create-branches
  +:pr-help-uri: {base-help-uri}/using-pull-requests
  +:gist-uri: https://gist.github.com
   
   === Submitting an Issue
   
  -We use the {issues}[issue tracker on GitHub] associated with this project to track bugs and features.
  +We use the {issues-uri}[issue tracker on GitHub] associated with this project to track bugs and features.
   Before submitting a bug report or feature request, check to make sure it hasn't already been submitted.
  -When submitting a bug report, please include a {gist}[Gist] that includes any details that may help reproduce the bug, including your gem version, Ruby version, and operating system.
  +When submitting a bug report, please include a {gist-uri}[Gist] that includes any details that may help reproduce the bug, including your gem version, Ruby version, and operating system.
   
   Most importantly, since Asciidoctor is a text processor, reproducing most bugs requires that we have some snippet of text on which Asciidoctor exhibits the bad behavior.
   
  
positive.code: 
  === Submitting a Pull Request
  
  . {fork}[Fork the repository].
  . Run +bundle install+ to install dependencies.
  . {branch}[Create a topic branch].
  . Add tests for your unimplemented feature or bug fix. (See <<writing-and-executing-tests>>)
  . Run +bundle exec rake+ to run the tests.
  If your tests pass, return to step 3.
  
negative.code: . Add documentation for your feature or bug fix.
  . If your changes are not 100% documented, go back to step 7.
  . Add, commit, and push your changes.
  . {pr-help-uri}[Submit a pull request].
  
  === Writing and Executing Tests
  
  