update elements and fix some bugs

lib/src/prism/gulpfile.js

 var gulp   = require('gulp'),
         rename = require('gulp-rename'),
         uglify = require('gulp-uglify'),
         header = require('gulp-header'),
         concat = require('gulp-concat'),
+        replace = require('gulp-replace'),
+        fs = require('fs'),
 
         paths  = {
+                componentsFile: 'components.js',
                 components: ['components/**/*.js', '!components/**/*.min.js'],
                 main: [
                         'components/prism-core.js',
                         'components/prism-markup.js',
                         'components/prism-css.js',
                         'components/prism-clike.js',
                         'components/prism-javascript.js',
                         'plugins/file-highlight/prism-file-highlight.js'
                 ],
-                plugins: ['plugins/**/*.js', '!plugins/**/*.min.js']
+                plugins: ['plugins/**/*.js', '!plugins/**/*.min.js'],
+                showLanguagePlugin: 'plugins/show-language/prism-show-language.js',
+                autoloaderPlugin: 'plugins/autoloader/prism-autoloader.js'
         };
 
 gulp.task('components', function() {
         return gulp.src(paths.components)
                 .pipe(uglify())
                 .pipe(rename({ suffix: '.min' }))
                 .pipe(gulp.dest('components'));
 });
 
 gulp.task('build', function() {
         return gulp.src(paths.main)
                 .pipe(header('\n/* **********************************************\n' +
                         '     Begin <%= file.relative %>\n' +
                         '********************************************** */\n\n'))
                 .pipe(concat('prism.js'))
                 .pipe(gulp.dest('./'));
 });
 
-gulp.task('plugins', function() {
+gulp.task('plugins', ['languages-plugins'], function() {
         return gulp.src(paths.plugins)
                 .pipe(uglify())
                 .pipe(rename({ suffix: '.min' }))
                 .pipe(gulp.dest('plugins'));
 });
 
 gulp.task('watch', function() {
         gulp.watch(paths.components, ['components', 'build']);
         gulp.watch(paths.plugins, ['plugins', 'build']);
 });
 
+gulp.task('languages-plugins', function (cb) {
+        fs.readFile(paths.componentsFile, {
+                encoding: 'utf-8'
+        }, function (err, data) {
+                if (!err) {
+                        data = data.replace(/^var\s+components\s*=\s*|;\s*$/g, '');
+                        try {
+                                data = JSON.parse(data);
+
+                                var languagesMap = {};
+                                var dependenciesMap = {};
+                                for (var p in data.languages) {
+                                        if (p !== 'meta') {
+                                                var title = data.languages[p].displayTitle || data.languages[p].title;
+                                                var ucfirst = p.substring(0, 1).toUpperCase() + p.substring(1);
+                                                if (title !== ucfirst) {
+                                                        languagesMap[p] = title;
+                                                }
+
+                                                if(data.languages[p].require) {
+                                                        dependenciesMap[p] = data.languages[p].require;
+                                                }
+                                        }
+                                }
+
+                                var jsonLanguagesMap = JSON.stringify(languagesMap);
+                                var jsonDependenciesMap = JSON.stringify(dependenciesMap);
+
+                                var tasks = [
+                                        {plugin: paths.showLanguagePlugin, map: jsonLanguagesMap},
+                                        {plugin: paths.autoloaderPlugin, map: jsonDependenciesMap}
+                                ];
+
+                                var cpt = 0;
+                                var l = tasks.length;
+                                var done = function() {
+                                        cpt++;
+                                        if(cpt === l) {
+                                                cb && cb();
+                                        }
+                                };
+
+                                tasks.forEach(function(task) {
+                                        var stream = gulp.src(task.plugin)
+                                                .pipe(replace(
+                                                        /\/\*languages_placeholder\[\*\/[\s\S]*?\/\*\]\*\//,
+                                                        '/*languages_placeholder[*/' + task.map + '/*]*/'
+                                                ))
+                                                .pipe(gulp.dest(task.plugin.substring(0, task.plugin.lastIndexOf('/'))));
+
+                                        stream.on('error', done);
+                                        stream.on('end', done);
+                                });
+
+                        } catch (e) {
+                                cb(e);
+                        }
+                } else {
+                        cb(err);
+                }
+        });
+});
+
 gulp.task('default', ['components', 'plugins', 'build']);