title: Illegal character sequence \p' in string literal
body: <p>When executing the following code:</p>
  
  <pre><code>string query = 'select id from ClientData__c';
  string Point05 = '%\\file-01\projects\Internal Audit\Internal Audit 
  Team\FY18\SOX\Testing%';
  
  query += ' WHERE Point05__c LIKE \'' + Point05 + '\'';
  
  List&lt;ClientData__c&gt; clientData = database.query(query);
  </code></pre>
  
  <p>I get the following error:</p>
  
  <p>Line: 2, Column: 18
  Illegal string literal: Invalid string literal '%\file-01\projects\Internal Audit\Internal Audit Team\FY18\SOX\Testing%'. Illegal character sequence \p' in string literal.</p>