keyword_feature.test

in
"foo" in ["foo"]
"f" in "foo"

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[
	["keyword", "in"],

	["string", "\"foo\""],
	["keyword", "in"],
	["punctuation", "["],
	["string", "\"foo\""],
	["punctuation", "]"],

	["string", "\"f\""],
	["keyword", "in"],
	["string", "\"foo\""]
]

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Checks for all keywords.