lordofthejars/asciidoctorj-extensions — pull request #1 by spmallette (2014-05-15 15:30:36+00:00)
Title: Handle empty lines in code.

When content was being rendered the join() method was executing a substring on the line to remove lead indents. If the line was empty this was result in an error.

Hope my formatting isn't a problem. Looked like you had a mix of tabs and spaces before I started tinkering with this, but maybe Intellij made it look that way.