title: Is there a query string character whose meaning is "ignore the string beyond this point"?
body: <p>Is there a reserved query-string character that is conventionally used to ignore sections of the string? Something like this:</p>
  
  <pre><code>?foo=bar&amp;baz=quux*some character*&amp;sky=blue
  </code></pre>
  
  <p>Where adding <em>some character</em> results in this query string with the end ignored:</p>
  
  <pre><code>?foo=bar&amp;baz=quux
  </code></pre>
  
  <p>I know that it's usually up to the programs parsing the query string to decide how anything is handled, but I wanted to know if anything like this exists in the same way that a + is meant to denote a space.</p>