A repose of my attribute test
Unfortunately that don't work. There is a reason the original gsak implementation uses a helper tool for the user to set that manually.
A quick compilation of my GSAK caches. I have 60 set as night owl caches with Night cache and Flash light required attributes
Night night+flash
60 53 Night Owl cache
22 3 Not night owl cache
It is quite obvious that there is not any way to auto detect it
Also se the FAQ whre the intresting part is
"Then we are also missing the badges The Scuba-Cacher and The Night-Owl. These can not be automatically calculated. We have been strictly told by the author of BadgeGen that we can not use the cache attributes to determine these. Therefore, there is currently no technical solution to solve these badges"
http://project-gc.com/Home/FAQ#4f70b0c6a1a97467ef6f70bd2ab02ac2