title: Shortcut for changing tabs->spaces->tabs in IntelliJ IDEA
body: <p>I know I can change indentation by:</p>
  <pre><code>File &gt; Settings &gt; Editor &gt; Code Style &gt; ANY_LANGUAGE &gt; Tabs and Indents &gt; Use tab character
  </code></pre>
  <p>but in my legacy project there is a mix of indents in different files. Is there any keyboard shortcut in IDE for changing spaces to tabs and vice versa? Or how can I set up one for all or specified language files?</p>