PHPOffice/PHPExcel — pull request #236 by Doggie52 (2013-08-20 20:07:15+00:00)
Title: Excel2007 writer's save() should return TRUE when file is successfully closed

I believe this should be put in place for all the other writers too, just haven't done this yet. Want to know if there's some form of coding practice you have in place that prevents these functions from returning a value before I put any time into modifying the other writers.