Unable to find a substitute command for Bash's complete in Zsh

Question

I put the newest git-completion.bash to my .zshrc and I get

/Users/Masi/bin/shells/git/git-completion.bash:2116: command not found: complete
/Users/Masi/bin/shells/git/git-completion.bash:2118: command not found: complete

The lines are

 complete -o bashdefault -o default -o nospace -F _git git 2>/dev/null \
     || complete -o default -o nospace -F _git git 
 complete -o bashdefault -o default -o nospace -F _gitk gitk 2>/dev/null \
     || complete -o default -o nospace -F _gitk gitk

Which command is a substitute for Bash's complete in Zsh?

Answer 1

I do believe it's a problem, since complete is a built-in Bash command. It's part of Bash's programmable completion feature.

Answer 2

Why not just add complete to zsh? It's open-source, right?