text: #!/usr/bin/env node
  /*eslint no-console:0*/
  
  'use strict';
  
  
  var fs = require('fs');
  var argparse = require('argparse');
  
  
  ////////////////////////////////////////////////////////////////////////////////
  
  var cli = new argparse.ArgumentParser({
    prog: 'markdown-it',
    version: require('../package.json').version,
    addHelp: true
  });
  
  cli.addArgument([ '--no-html' ], {
    help:   'Disable embedded HTML',
    action: 'storeTrue'
  });
  
  cli.addArgument([ '-l', '--linkify' ], {
    help:   'Autolink text',
    action: 'storeTrue'
  });
  
  cli.addArgument([ '-t', '--typographer' ], {
    help:   'Enable smartquotes and other typographic replacements',
    action: 'storeTrue'
  });
  
  cli.addArgument([ '--trace' ], {
    help:   'Show stack trace on error',
    action: 'storeTrue'
  });
  
  cli.addArgument([ 'file' ], {
    help: 'File to read',
    nargs: '?',
    defaultValue: '-'
  });
  
  cli.addArgument([ '-o', '--output' ], {
    help: 'File to write',
    defaultValue: '-'
  });
  
  var options = cli.parseArgs();
  
  
  function readFile(filename, encoding, callback) {
    if (options.file === '-') {
      // read from stdin
      var chunks = [];
  
      process.stdin.on('data', function (chunk) { chunks.push(chunk); });
  
      process.stdin.on('end', function () {
        return callback(null, Buffer.concat(chunks).toString(encoding));
      });
    } else {
      fs.readFile(filename, encoding, callback);
    }
  }
  
  
  ////////////////////////////////////////////////////////////////////////////////
  
  readFile(options.file, 'utf8', function (err, input) {
    var output, md;
  
    if (err) {
      if (err.code === 'ENOENT') {
        console.error('File not found: ' + options.file);
        process.exit(2);
      }
  
      console.error(
        options.trace && err.stack ||
        err.message ||
        String(err));
  
      process.exit(1);
    }
  
    md = require('..')({
      html: !options['no-html'],
      xhtmlOut: false,
      typographer: options.typographer,
      linkify: options.linkify
    });
  
    try {
      output = md.render(input);
  
    } catch (e) {
      console.error(
        options.trace && e.stack ||
        e.message ||
        String(e));
  
      process.exit(1);
    }
  
    if (options.output === '-') {
      // write to stdout
      process.stdout.write(output);
    } else {
      fs.writeFileSync(options.output, output);
    }
  });
  