code: function at_link() {
    match(/\{@link/)
    skip_horiz_white();
  
    var linkText = strip(match(/.*?\}/)).replace(/\s*@link\s*/, "").slice(0,-1); 
  
    if (/^https?/.test(linkText)) {
      var anchor = linkText.split(/\s+/);
      var link = anchor.shift();
      current_tag["doc"] = current_tag["doc"].slice(0,-1) + 
                           "[" + anchor.join(" ") + "]" +
                           "(" + link + ")";
    }
    else { // sugar this into panino style [[ ]] link block
      current_tag["doc"] = current_tag["doc"].slice(0,-1) + 
                           "[[" + 
                           linkText
                           + "]] ";
    }
  
    skip_white();
  }
docs: matches @link [<ident-chain> some text...] or @link https?://blahblah some text...