application_backtrace

# File activesupport/lib/active_support/core_ext/exception.rb, line 27
  def application_backtrace
    before_framework_frame = nil
    before_application_frame = true

    trace = clean_backtrace.reject do |line|
      before_framework_frame ||= (line =~ FrameworkStart)
      non_app_frame = (line =~ FrameworkRegexp)
      before_application_frame = false unless non_app_frame
      before_framework_frame || (non_app_frame && !before_application_frame)
    end

    # If we didn't find any application frames, return an empty app trace.
    before_application_frame ? [] : trace
  end