luatexconfig.tex

% Allow accees to \directlua but without a group (as settings
% will not otherwise work)
\catcode`\{=1 %
\catcode`\}=2 %
% Makes the Lua patterns a little easier to write
\catcode`\%=12\relax
\directlua{
  local line
  for line in io.lines(kpse.lookup("pdftexconfig.dat")) do
    if not string.match(line, "^%%") then
      local key, value = string.match(line, "^(%w+)%s*%=%s*(.*)$")
        if key then
          if pdf["set" .. key] then
            pdf["set" .. key](value)
          else
            tex["pdf" .. key] = value
          end
        end
    end
  end
}
\catcode`\%=14\relax

% Set up output mode correctly and tidy up
\directlua{
  local pdfoutput = pdf.setoutputmode or function(n) tex.pdfoutput = n end
  pdfoutput(\ifx\dvimode\undefined 1\else 0\fi)
}
\let\dvilualatex\undefined
% Put category codes back to normal
\catcode`\{=12 %
\catcode`\}=12 %