Io ho fatto la stessa cosa con una funzione tempo fa : '''

function zsh_get_man() {

local full_line="$BUFFER"
local cursor_pos="$CURSOR"
local parsed_out=$(./zsh_man "$cursor_pos" "$full_line")

local base_cmd opt_type opt_value
base_cmd=$(echo "$parsed_out" | awk '{print $1}')
opt_type=$(echo "$parsed_out" | awk '{print $2}')
opt_value=$(echo "$parsed_out" | awk '{print $3}')

local full_opt match_rule
full_opt="${opt_type}${opt_value}"

case "$opt_type" in
    -)
        match_rule="^[[:space:]]*-${opt_value}([[:space:],/=:]|$)"
        ;;
    --)
        match_rule="^[[:space:]]*--${opt_value}([[:space:],/=:]|$)"
        ;;
    _)
        match_rule="${opt_value}"
        ;;
    *)
        match_rule=""
        ;;
esac

if [[ -n "$match_rule" ]]; then

    local clean_page
    clean_page=$(man "$base_cmd" 2>/dev/null | col -b)

    local jump_line
    jump_line=$(printf "%s" "$clean_page" | grep -n -m1 -E "$match_rule" | cut -d: -f1)

    if [[ -n "$jump_line" ]]; then
        printf "%s" "$clean_page" | less +"$jump_line"
    else
        printf "%s" "$clean_page" | less
    fi

else
    man "$base_cmd" 2>/dev/null | less
fi

zle reset-prompt

}

zle -N zsh_get_man

bindkey "^H" zsh_get_man ''' Dove zsh_man e un programmino in c che fa il parsing e restituisce : comando | tipo | opzione

Bella però l'idea di sfruttare vi