how provide data for zsh completion system

Question

Is there any standard way of providing list of program switches, so it would be possible for zsh to determine possible completions? Or must it provided directly to zsh developers and only they can add completions to zsh?

Answer 1

Your first stop should be man zshcompsys.

Then you could look at an example such as /usr/share/zsh/functions/Completion/Unix/_vim.