title: Space and non-Latin characters in URL
body: <p>I want my URLs to be as much human-readable and pretty as possible. I noticed even space character works in URL. Copy:<code>http://en.wikipedia.org/wiki/Prince of Persia</code> or <code>http://en.wikipedia.org/wiki/سنڌي</code> to your borowers' address bar, and it works!</p>
  
  <p>These work too:</p>
  
  <pre><code>&lt;a href='http://en.wikipedia.org/wiki/Prince of Persia'&gt; Foo &lt;/a&gt;
  &lt;a href='http://en.wikipedia.org/wiki/سنڌي'&gt; Bar &lt;/a&gt;
  </code></pre>
  
  <p>How much safe is using Unicode letter beyond A-Z in URLs? My URLs are simple without any punctuation mark, similar to Wikipedia links.</p>
  
  <p>It's not important for me that it is valid or invalid, I only want it works!</p>
  
  <p>(actually I am going to use <code>+</code> instead of '<code></code>' and my main concern is about Unicode text)</p>
  
  <p>Does above works hassle-free in all common browsers?</p>