title: Prefill github issue follow-up comments? (not initial comment)
body: <p>Github allows you to populate the textbox when linking a user to create a new issue:</p>
  
  <p><a href="https://help.github.com/articles/about-automation-for-issues-and-pull-requests-with-query-parameters/" rel="nofollow noreferrer">https://help.github.com/articles/about-automation-for-issues-and-pull-requests-with-query-parameters/</a></p>
  
  <p>Is there any similar feature when linking a user to comment on an existing issue?</p>
  
  <p>(Not looking for an API solution due to the constraints of only being able to insert HTML links into the source application)</p>