Reuse options in _arguments for Zsh completion

Question

I have a python program that utilizes action='append' of python. For example, I can use the command like this

mod_db -i $HOME -i $PWD -i /usr/local foo bar

How can I use _arguments or anything else to implement the Zsh completion?

Answer 1

Just found the answer by looking at the completion for gcc here. The solution is to add a * before the command. For example,

_arguments -C \
     '*-i[a path]:path:_path_files -/' \
     ......