(function(Prism) {

	Prism.languages.handlebars = {
		'comment': /\{\{![\s\S]*?\}\}/,
		'delimiter': {
			pattern: /^\{\{\{?|\}\}\}?$/i,
			alias: 'punctuation'
		},
		'string': /(["'])(?:\\.|(?!\1)[^\\\r\n])*\1/,
		'number': /\b0x[\dA-Fa-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,
		'boolean': /\b(?:true|false)\b/,
		'block': {
			pattern: /^(\s*~?\s*)[#\/]\S+?(?=\s*~?\s*$|\s)/i,
			lookbehind: true,
			alias: 'keyword'
		},
		'brackets': {
			pattern: /\[[^\]]+\]/,
			inside: {
				punctuation: /\[|\]/,
				variable: /[\s\S]+/
			}
		},
		'punctuation': /[!"#%&'()*+,.\/;<=>@\[\\\]^`{|}~]/,
		'variable': /[^!"#%&'()*+,.\/;<=>@\[\\\]^`{|}~\s]+/
	};

	Prism.hooks.add('before-tokenize', function(env) {
		var handlebarsPattern = /\{\{\{[\s\S]+?\}\}\}|\{\{[\s\S]+?\}\}/g;
		Prism.languages['markup-templating'].buildPlaceholders(env, 'handlebars', handlebarsPattern);
	});

	Prism.hooks.add('after-tokenize', function(env) {
		Prism.languages['markup-templating'].tokenizePlaceholders(env, 'handlebars');
	});

}(Prism));