|foobar|
|foo\|b\{a}r|
|foo { bar } baz|

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

[
	["token-operator", "|"], ["string-template", "foobar"], ["token-operator", "|"],
	["token-operator", "|"], ["string-template", "foo\\|b\\{a}r"], ["token-operator", "|"],
	["token-operator", "|"], ["string-template", "foo "], ["token-operator", "{"],
	" bar ",
	["token-operator", "}"], ["string-template", " baz"], ["token-operator", "|"]
]

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

Checks for string templates.