# File lib/rspec/core/formatters/base_formatter.rb, line 93
        def format_backtrace(backtrace, example)
          return "" unless backtrace
          return backtrace if example.metadata[:full_backtrace] == true

          cleansed = backtrace.select { |line| backtrace_line(line) }
          # Kick the describe stack info off the list, just keep the line the problem happened on from that file
          # cleansed = [cleansed.detect { |line| line.split(':').first == example.metadata[:caller].split(':').first }] if cleansed.size > 1
          cleansed.empty? ? backtrace : cleansed
        end