[JoBrad]

Wouldn't it be simpler to just add everything into your path, then split, uniq, and re-combine it, at the end?

Edit:

I use a .bashrc.d directory to store all of my bash customizations. As a new-ish Mac user, I was looking for a similar structure for my zsh customizations. Really like your setup - thanks for sharing!

[nerdponx]

Happy it helped! Indeed, you can see in the Zsh config it's all a lot simpler, taking advantage of `typeset -T` among other things.