Actually, the coding it self did not take that long time. What takes time when developing a public snippet is all the stuff needed to do to make it work for many, and trying to figure out what could go wrong when someone is using the snippet.
I would say that for me creating a working copy of a snippet (that works for my own needs) is 10 % of the work, the rest is making it user friendly (there should be no need for editing the snippet to change things), writing instructions, testing, testing and testing. I think I created 300-400 users just to test what happens in all thinkable cases.
Still, I’m sure there are things I’ve missed so any reports are welcome!
And I think I need to rewrite the instructions, eFreg is easy to use but when reading my instructions it could seem a bit complicated.