class RSpec::Core::Formatters::TextMateFormatter

def backtrace_line(line, skip_textmate_conversion=false)
  if skip_textmate_conversion
    super(line)
  else
    format_backtrace_line_for_textmate(super(line))
  end
end

def extra_failure_content(exception)
  require 'rspec/core/formatters/snippet_extractor'
  backtrace = exception.backtrace.map {|line| backtrace_line(line, :skip_textmate_conversion)}
  backtrace.compact!
  @snippet_extractor ||= SnippetExtractor.new
  "    <pre class=\"ruby\"><code>#{@snippet_extractor.snippet(backtrace)}</code></pre>"
end

def format_backtrace_line_for_textmate(line)
  return nil unless line
  CGI.escapeHTML(line).sub(/([^:]*\.e?rb):(\d*)/) do
    "<a href=\"txmt://open?url=file://#{File.expand_path($1)}&line=#{$2}\">#{$1}:#{$2}</a> "
  end
end