That's true, so I should clarify even further. The restriction isn't on `y[c]_`. It's actually on `y[c]___`. This is because `y` is the package name for the s

That's true, so I should clarify even further. The restriction isn't on `y[c]_`. It's actually on `y[c]___`. This is because `y` is the package name for the standard library, and the standard library name will always be separated from the rest of the name by 3 or more underscores. Really, the restriction is on 3 or more consecutive underscores in C names, and you can't have have a package name that is either `y`, `yc`, or `YC`. I apologize for the confusion. I was in a hurry and on mobile with the original post.