"f\"oo"
'f\'oo'
"foo\
bar"
'foo\
bar'

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

[
	["string", "\"f\\\"oo\""],
	["string", "'f\\'oo'"],
	["string", "\"foo\\\r\nbar\""],
    ["string", "'foo\\\r\nbar'"]
]

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

Checks for single-quoted and double-quoted strings.