https://github.com/jcupitt/ruby-vips/blob/9aae997817c13ba9dd71a2d28dfc62246654fa08/lib/vips/call.rb#L10-L214

Just wondering if this function is more complex than it needs to be. It looks like it's doing a lot of "redundant" processing. Could it be simplified?

Also, the function is hard to read and understand. I believe it's covering too much "surface area". Perhaps it could be broken up into smaller more manageable bits.