unique_id Returns a unique CSS identifier. The identifier is returned as an unquoted string. The identifier returned is only

variable_exists($name) Check whether a variable with the given name exists in the current scope or in the global scope.

red($color) Gets the red component of a color. Calculated from HSL where necessary via

quote($string) Add quotes to a string if the string isn’t quoted, or returns the same string if it is.

append($list, $val, $separator:auto) Appends a single value onto the end of a list. Unless

map_keys($map) Returns a list of all keys in a map.

to_upper_case($string) Converts a string to upper case.

min($numbers...) Finds the minimum of several numbers. This function takes any number of arguments.

map_get($map, $key) Returns the value in a map associated with the given key. If the map doesn’t have such a key, returns

random random($limit)