so () {
    [ -f "$1" ] && source "$1"
}

install_if_not_exists() {
    local path="$HOME/.subzsh/plugins/$1"
    if [ ! -d "$path" ]; then
        /usr/bin/git clone "https://github.com/$1" "$path"
    fi
}

install_if_not_exists zsh-users/zsh-autosuggestions
install_if_not_exists zsh-users/zsh-syntax-highlighting
install_if_not_exists hlissner/zsh-autopair
install_if_not_exists unixorn/fzf-zsh-plugin

so ~/.subzsh/plugins/zsh-users/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
so ~/.subzsh/plugins/zsh-users/zsh-autosuggestions/zsh-autosuggestions.zsh
so ~/.subzsh/plugins/hlissner/zsh-autopair/autopair.zsh
so ~/.subzsh/plugins/unixorn/fzf-zsh-plugin/fzf-zsh-plugin.plugin.zsh
so ~/.subzsh/plugins/dirhistory.zsh