%% %*% %/%
%in% %o% %x%
%foobar%

----------------------------------------------------

[
	["percent-operator", "%%"], ["percent-operator", "%*%"], ["percent-operator", "%/%"],
	["percent-operator", "%in%"], ["percent-operator", "%o%"], ["percent-operator", "%x%"],
	["percent-operator", "%foobar%"]
]

----------------------------------------------------

Checks for user-defined operators and operators starting with %.