Template talk:Potential article

Category suppression, I'm confused
Noticed the change for category suppression but I'm trying to understand the logic. Reading Wikipedia's section on Attribute-based suppression examples, particularly the case An example using  where the default is to automatically categorize, where the suggested coding is:

In the template's code change, the inverse logic is being used: I think this is all about keeping each of the template examples in Bogleheads:Template messages from causing Bogleheads:Template messages from being categorized. What am I missing in the logic? --Peculiar Investor 09:52, 17 January 2015 (CST)
 * You're missing that I copied the code from some very early wiki activity and haven't changed it since. Yes, the intent is to keep Bogleheads:Template messages from being categorized.
 * I compared the code to the syntax shown in Help:Extension:ParserFunctions #ifeq




 * The default will go to "value if different" - include the category. When nocat = true, the comment will be used (not categorized). Backwards? Perhaps, but it works. --LadyGeek 12:08, 17 January 2015 (CST)