Double arrow tokenized as T_STRING when placed after non-arrow function "fn" keyword #2865
Description
Given the below code sample, PHP itself tokenizes the => as T_DOUBLE_ARROW, however, since PHPCS 3.5.4, PHPCS tokenizes it as T_STRING.
I haven't traced back yet which commit introduced this, nor figured out yet where to apply the fix.
class Foo { public $fn = 'key'; public function bar() { return [ $this->fn => 'value', ]; } }Related to #2523