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Generic/LowerCaseKeyword: remove some redundant code #600

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Commits on Aug 17, 2024

  1. Generic/LowerCaseKeyword: remove some redundant code

    The `Tokens::$contextSensitiveKeywords` token array was introduced in PHPCS 3.7.0 via PR squizlabs/PHP_CodeSniffer 3484.
    
    PR squizlabs/PHP_CodeSniffer 3574 build onto that by removing the bulk of the target tokens from the `register()` method for the Generic/LowerCaseKeyword sniff in favour of using the predefined `Tokens::$contextSensitiveKeywords` token array.
    
    The `T_EMPTY`, `T_EVAL`, `T_ISSET` and `T_UNSET` tokens were initially missing from the `Tokens::$contextSensitiveKeywords` array.
    This was fixed in PHPCS 3.7.1 via PRs squizlabs/PHP_CodeSniffer 3608 and  squizlabs/PHP_CodeSniffer 3610.
    
    This means those tokens no longer need to be explicitly added as targets for the Generic/LowerCaseKeyword sniff as they are now (and have been since PHPCS 3.7.1) inherited via the `Tokens::$contextSensitiveKeywords` token array.
    
    This commit removes the redundancy, but also adds tests to safeguard that those keywords will still be checked by the sniff.
    jrfnl committed Aug 17, 2024
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