module Sass::Plugin

def exception_string(e)
  if options[:full_exception]
    e_string = "#{e.class}: #{e.message}"
    if e.is_a? Sass::SyntaxError
      e_string << "\non line #{e.sass_line}"
      if e.sass_filename
        e_string << " of #{e.sass_filename}"
        if File.exists?(e.sass_filename)
          e_string << "\n\n"
          min = [e.sass_line - 5, 0].max
          begin
            File.read(e.sass_filename).rstrip.split("\n")[
              min .. e.sass_line + 5
            ].each_with_index do |line, i|
              e_string << "#{min + i + 1}: #{line}\n"
            end
          rescue
            e_string << "Couldn't read sass file: #{e.sass_filename}"
          end
        end
      end
    end
    <<END
string}
trace:\n#{e.backtrace.join("\n")}
:before {
ite-space: pre;
nt-family: monospace;
ntent: "#{e_string.gsub('"', '\"').gsub("\n", '\\A ')}"; }
    # Fix an emacs syntax-highlighting hiccup: '
  else
    "/* Internal stylesheet error */"
  end
end