#!/bin/sh

if [ "$#" -eq 0 ]; then
  echo >&2 "Usage: $0 <keyid> [<keyid> ..]"
  exit 1
fi

gpg --with-colons --fast-list-mode --list-sigs "$@" |
	awk -F ':' '$1 ~ /sig|rev/ {print $5}' |
	sort -u |
	xargs gpg --recv-keys