Enable Style/TrailingCommaInArguments: { EnforcedStyleForMultiline: comma } #28
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Ruby allows trailing comma for function argument. Trailing comma of function argument seems abnormal, but the world is evolving toward that as ES2017 has this proposal. JSON's spec does not allow trailing comma, but it is written long ago. JavaScript allows Trailing comma in literal since IE9. It is better to detect correct lines of difference. ``` # Bad 2 insertions(+), 1 deletion(-) # Good 1 insertions(+) ``` Unify trailing commas as following rule. * Single line always avoid trailing comma * Multiple line always add trailing comma
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ゆえに引数もケツカンマ推奨にしたいと思います。