title: TypeError: Request path contains unescaped characters
body: <p>I try to install node.js modules using:</p>
  
  <pre><code>npm install express
  </code></pre>
  
  <p>but I get this error:</p>
  
  <pre><code>npm http GET https://registry.npmjs.org/express
  npm ERR! TypeError: Request path contains unescaped characters.
  npm ERR!     at Agent.request (_http_agent.js:264:11)
  npm ERR!     at TunnelingAgent.exports.request (http.js:52:22)
  npm ERR!     at TunnelingAgent.createSocket (/usr/local/lib/node_modules/npm/node_modules/request/node_modules/tunnel-agent/index.js:117:25)
  npm ERR!     at TunnelingAgent.createSecureSocket [as createSocket] (/usr/local/lib/node_modules/npm/node_modules/request/node_modules/tunnel-agent/index.js:184:41)
  npm ERR!     at TunnelingAgent.addRequest (/usr/local/lib/node_modules/npm/node_modules/request/node_modules/tunnel-agent/index.js:80:8)
  npm ERR!     at new ClientRequest (_http_client.js:112:16)
  npm ERR!     at Agent.request (_http_agent.js:279:10)
  npm ERR!     at Object.exports.request (https.js:130:22)
  npm ERR!     at Request.start (/usr/local/lib/node_modules/npm/node_modules/request/index.js:594:30)
  npm ERR!     at Request.end (/usr/local/lib/node_modules/npm/node_modules/request/index.js:1186:28)
  npm ERR! If you need help, you may report this log at:
  npm ERR!     &lt;http://github.com/isaacs/npm/issues&gt;
  npm ERR! or email it to:
  npm ERR!     &lt;npm-@googlegroups.com&gt;
  
  npm ERR! System Linux 3.6.11-7.fc16.x86_64
  npm ERR! command "/usr/local/bin/node" "/usr/local/bin/npm" "install" "express"
  npm ERR! cwd /usr/local/src/node
  npm ERR! node -v v0.11.5-pre
  npm ERR! npm -v 1.3.5
  npm ERR! 
  npm ERR! Additional logging details can be found in:
  npm ERR!     /usr/local/src/node/npm-debug.log
  npm ERR! not ok code 0
  </code></pre>
  
  <p>May be happening I use a proxy I set it up this way to allow downloads from ips outside my network</p>
  
  <pre><code>export https_proxy='http://172.21.0.12:3128'
  </code></pre>
  
  <p>I hope you can help me</p>