Custom autocompletion for zsh

ZSH has builtin autocompletion for scp, so a command like

scp 开发者_如何学Cuser@host/path/

would show directory listings on the remote server.

However, this does not work when opening a remote file in vim

vim scp://user@host/path/

I have googled around for documentation on the zsh autocomplete functions but it seems very complicated. How can I enable autocomplete for vim scp?

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Complete autocompletion documentation is located in man zshall (if you don't want to view all sections in one man, see index in man zsh). Completion for vim is located in /usr/share/zsh/$ZSH_VERSION/functions/Completion/Unix/_vim, I guess you need to modify _vim_files function located at the top of the file and somehow export function _remote_files located in the /usr/share/zsh/$ZSH_VERSION/functions/Completion/Unix/_ssh.