Permitting trailing commas in closure use() declarations

Hi internals, https://wiki.php.net/rfc/trailing_comma_in_parameter_list mentioned > https://wiki.php.net/rfc/list-syntax-trailing-commas Trailing > Commas In List Syntax was a previous proposal to support optional trailing commas in all list-like > structures. > > Nothing has substantially changed since those RFCs in technical terms, but I think the > aforementioned style > for breaking up large parameter lists has become more accepted in the > meantime, and features like Constructor Property Promotion are going to increase its use further. So I'm wondering if anyone's interested in revisiting this: - It'd be easy to forget that function parameters support trailing commas, but not closure uses, especially if you're new to the language. - Supporting trailing commas in multi-line declarations would make version control history easier - if you had a closure for which fn wouldn't work (a list of values *and references* to use, or a list of statements), it'd be convenient to split it up across multiple lines e.g. ``` $incrementing_id = 0; return \array_map(static function (array $map) use ( $function, $some_data_structure, $some_flag, &$incrementing_id, ): ReturnType { ```