> 'files' will be immediately reassigned. 'f_flags' and 'file' will be
> overwritten in the if{} or seq_show() directly exits with an error.
> so we don't need to consume CPU resources to initialize them.
How do you think about to reduce the scope for four local variables
in this function implementation?
https://refactoring.com/catalog/reduceScopeOfVariable.html
Regards,
Markus
