Prism.languages.markup = {
	'comment': /&lt;!--[\w\W]*?-->/g,
	'prolog': /&lt;\?.+?\?>/,
	'doctype': /&lt;!DOCTYPE.+?>/,
	'cdata': /&lt;!\[CDATA\[[\w\W]*?]]>/i,
	'tag': {
		pattern: /&lt;\/?[\w:-]+\s*(?:\s+[\w:-]+(?:=(?:("|')(\\?[\w\W])*?\1|\w+))?\s*)*\/?>/gi,
		inside: {
			'tag': {
				pattern: /^&lt;\/?[\w:-]+/i,
				inside: {
					'punctuation': /^&lt;\/?/,
					'namespace': /^[\w-]+?:/
				}
			},
			'attr-value': {
				pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/gi,
				inside: {
					'punctuation': /=|>|"/g
				}
			},
			'punctuation': /\/?>/g,
			'attr-name': {
				pattern: /[\w:-]+/g,
				inside: {
					'namespace': /^[\w-]+?:/
				}
			}
			
		}
	},
	'entity': /&amp;#?[\da-z]{1,8};/gi
};

// Plugin to make entity title show the real entity, idea by Roman Komarov
Prism.hooks.add('wrap', function(env) {

	if (env.type === 'entity') {
		env.attributes['title'] = env.content.replace(/&amp;/, '&');
	}
});
Prism.languages.markup = {
	'comment': /&lt;!--[\w\W]*?-->/g,
	'prolog': /&lt;\?.+?\?>/,
	'doctype': /&lt;!DOCTYPE.+?>/,
	'cdata': /&lt;!\[CDATA\[[\w\W]*?]]>/i,
	'tag': {
		pattern: /&lt;\/?[\w:-]+\s*(?:\s+[\w:-]+(?:=(?:("|')(\\?[\w\W])*?\1|[^\s'">=]+))?\s*)*\/?>/gi,
		inside: {
			'tag': {
				pattern: /^&lt;\/?[\w:-]+/i,
				inside: {
					'punctuation': /^&lt;\/?/,
					'namespace': /^[\w-]+?:/
				}
			},
			'attr-value': {
				pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/gi,
				inside: {
					'punctuation': /=|>|"/g
				}
			},
			'punctuation': /\/?>/g,
			'attr-name': {
				pattern: /[\w:-]+/g,
				inside: {
					'namespace': /^[\w-]+?:/
				}
			}
			
		}
	},
	'entity': /&amp;#?[\da-z]{1,8};/gi
};

// Plugin to make entity title show the real entity, idea by Roman Komarov
Prism.hooks.add('wrap', function(env) {

	if (env.type === 'entity') {
		env.attributes['title'] = env.content.replace(/&amp;/, '&');
	}
});

Allow more characters in attribute values