Parse Bitcoin URL in JavaScript

parse-bitcoin-url.js

/* Parse bitcoin URL query keys. */
function parseBitcoinURL(url) {
  var r = /^bitcoin:([a-zA-Z0-9]{27,34})(?:\?(.*))?$/;
  var match = r.exec(url);
  if (!match) return null;

  var parsed = { url: url }

  if (match[2]) {
    var queries = match[2].split('&');
    for (var i = 0; i < queries.length; i++) {
      var query = queries[i].split('=');
      if (query.length == 2) {
        parsed[query[0]] = decodeURIComponent(query[1].replace(/\+/g, '%20'));
      }
    }
  }

  parsed.address = match[1];
  return parsed;
}

Cool. Why not just do:

parsed[query[0]] = decodeURIComponent(query[1]);

instead of:

parsed[query[0]] = decodeURIComponent(query[1].replace(/\+/g, '%20'));

? I mean... is there a realistic scenario with query params that have +? BIP 21 doesn't mention anything about converting them to spaces. So I must be missing something.