alphabetizing custom categories means that category numbers can change

[brianharvey]

This is undesirable, right?

[jmoenig]

nah, that's to be expected. If you're into meta-programming you can't rely on the order of things to stay the same, especially if you're mutating those things, inserting and removing things. Note: you now have a way to always check the current categories in your system (in their order):