old_contents: 'use strict';
  
  var gulp = require('gulp');
  var jshint = require('gulp-jshint');
  var stylish = require('jshint-stylish');
  var mocha = require('gulp-mocha');
  var gutil = require('gulp-util');
  var streamqueue = require('streamqueue');
  var watch = require('gulp-watch');
  var symlink = require('gulp-symlink');
  
  var TEST_PATH = 'test/*_test.js';
  // XXX: we should also lint against public/scripts/*.js,
  // But there are too many errors there... SCARY!!
  var JSHINT_PATH = './lib/*.js';
  
  gulp.task('jshint', function() {
    // if we are going to lint against multiple path, just append another
    // gulp.src('another_path/*.js') in argument list of streamqueue
    return streamqueue({objectMode: true}, gulp.src(JSHINT_PATH))
      .pipe(jshint()).pipe(jshint.reporter(stylish));
  });
  
  // We always run 'jshint' before 'test'.
  gulp.task('unit-test', ['jshint'], function() {
    return gulp.src([TEST_PATH], {read: false})
      .pipe(mocha({reporter: 'list'})).on('error', gutil.log);
  });
  
  // By default, we always run 'unit-test'. But 'unit-test' relies on 'jshint'
  gulp.task('default', ['unit-test']);
  
  gulp.task('watch', function() {
    watch('**/*.js', function() {
      gulp.start('unit-test');
    });
  });
  
  gulp.task('hook', function () {
      return gulp.src('.pre-commit')
          .pipe(symlink('.git/hooks/pre-commit', 'pre-commit'));
  });
  
new_contents: 'use strict';
  
  var gulp = require('gulp');
  var jshint = require('gulp-jshint');
  var stylish = require('jshint-stylish');
  var mocha = require('gulp-mocha');
  var gutil = require('gulp-util');
  var streamqueue = require('streamqueue');
  var watch = require('gulp-watch');
  var symlink = require('gulp-symlink');
  
  var TEST_PATH = 'test/*_test.js';
  // XXX: we should also lint against public/scripts/*.js,
  // But there are too many errors there... SCARY!!
  var JSHINT_PATH = './lib/*.js';
  
  gulp.task('jshint', function() {
    // if we are going to lint against multiple path, just append another
    // gulp.src('another_path/*.js') in argument list of streamqueue
    return streamqueue({objectMode: true}, gulp.src(JSHINT_PATH))
      .pipe(jshint()).pipe(jshint.reporter(stylish));
  });
  
  // We always run 'jshint' before 'test'.
  gulp.task('unit-test', ['jshint'], function() {
    return gulp.src([TEST_PATH], {read: false})
      .pipe(mocha({reporter: 'list'})).on('error', gutil.log);
  });
  
  // By default, we always run 'unit-test'. But 'unit-test' relies on 'jshint'
  gulp.task('default', ['unit-test']);
  
  gulp.task('watch', function() {
    watch('**/*.js', function() {
      gulp.start('unit-test');
    });
  });
  
  gulp.task('hook', function () {
      return gulp.src('.pre-commit')
          .pipe(symlink('.git/hooks/pre-commit', {force: true}));
  });
  
subject: Fix #88, use force option on gulp-symlink