title: Gulp plugin "gulp-filter" not restoring files in the stream as intended
body: <p>I have a gulp task that does a pretty simple task, it searches for all files in a folder, filter html files, validate them and then restore file stream and push every file type in the destination folder. This gulpfile:</p>
  
  <pre><code>// define gulp
  var gulp = require('gulp');
  
  // define plug-ins
  var filter = require('gulp-filter');
  var w3cjs = require('gulp-w3cjs');
  var newer = require('gulp-newer');
  
  // define paths
  var src_path = 'src';
  var dest_path =  'public';
  
  // Copy all files from /src, validate html files, and and push everything inside /public
  
  gulp.task('files', function() {
      return gulp.src(src_path + '/*')  //search for all files
      .pipe(newer(dest_path))  // if new go on, if old skip
      .pipe(filter('*.html'))  // filter html files
      .pipe(w3cjs())  // validate filtered files
      .pipe(filter('*.html').restore())  // restore files in pre-filter state
      .pipe(gulp.dest(dest_path))  // push in destination folder
  });
  </code></pre>
  
  <p>It seems that the "restore" is not restoring files, infact only html files are being pushed in production (/public) folder, what could be wrong? Thanks for any help.</p>