Prism.languages.yaml = {
	'scalar': {
		pattern: /([\-:]\s*(?:![^\s]+)?[ \t]*[|>])[ \t]*(?:((?:\r?\n|\r)[ \t]+)[^\r\n]+(?:\2[^\r\n]+)*)/,
		lookbehind: true,
		alias: 'string'
	},
	'comment': /#.*/,
	'key': {
		pattern: /(\s*(?:^|[:\-,[{\r\n?])[ \t]*(?:![^\s]+)?[ \t]*)[^\r\n{[\]},#\s]+?(?=\s*:\s)/,
		lookbehind: true,
		alias: 'atrule'
	},
	'directive': {
		pattern: /(^[ \t]*)%.+/m,
		lookbehind: true,
		alias: 'important'
	},
	'datetime': {
		pattern: /([:\-,[{]\s*(?:![^\s]+)?[ \t]*)(?:\d{4}-\d\d?-\d\d?(?:[tT]|[ \t]+)\d\d?:\d{2}:\d{2}(?:\.\d*)?[ \t]*(?:Z|[-+]\d\d?(?::\d{2})?)?|\d{4}-\d{2}-\d{2}|\d\d?:\d{2}(?::\d{2}(?:\.\d*)?)?)(?=[ \t]*(?:$|,|]|}))/m,
		lookbehind: true,
		alias: 'number'
	},
	'boolean': {
		pattern: /([:\-,[{]\s*(?:![^\s]+)?[ \t]*)(?:true|false)[ \t]*(?=$|,|]|})/im,
		lookbehind: true,
		alias: 'important'
	},
	'null': {
		pattern: /([:\-,[{]\s*(?:![^\s]+)?[ \t]*)(?:null|~)[ \t]*(?=$|,|]|})/im,
		lookbehind: true,
		alias: 'important'
	},
	'string': {
		pattern: /([:\-,[{]\s*(?:![^\s]+)?[ \t]*)("|')(?:(?!\2)[^\\\r\n]|\\.)*\2(?=[ \t]*(?:$|,|]|}))/m,
		lookbehind: true,
		greedy: true
	},
	'number': {
		pattern: /([:\-,[{]\s*(?:![^\s]+)?[ \t]*)[+\-]?(?:0x[\da-f]+|0o[0-7]+|(?:\d+\.?\d*|\.?\d+)(?:e[+-]?\d+)?|\.inf|\.nan)[ \t]*(?=$|,|]|})/im,
		lookbehind: true
	},
	'tag': /![^\s]+/,
	'important': /[&*][\w]+/,
	'punctuation': /---|[:[\]{}\-,|>?]|\.\.\./
};