Selecta history widget for zsh

selecta.zsh

if [[ -n $(which selecta) ]]; then
    # CTRL-R - Paste the selected command from history into the command line
    selecta-history-widget() {
        local selected restore_no_bang_hist
        if [[ -z "$LBUFFER" ]]; then
            selected=( $(fc -l 1 | selecta) )
        else
            selected=( $(fc -l 1 | selecta -s "$LBUFFER") )
        fi
        if $selected; then
            num=$selected[1]
            if [ -n "$num" ]; then
                zle vi-fetch-history -n $num
            fi
        fi
        zle redisplay
    }
    zle     -N   selecta-history-widget
    bindkey '^R' selecta-history-widget
fi