title: Using braces in conditions
body: <p>Is it considered secure to write a condition without braces? e.g.:</p>
  
  <pre><code>if [$step &gt; 0] {
  # …
  }
  </code></pre>
  
  <p>Or must I use braces? e.g.:</p>
  
  <pre><code>if {[$step &gt; 0]} {
  # …
  }
  </code></pre>
  
  <p>The line without the braces looks readable compared to the line with the braces.<br>
  But are there any disadvantages/caveats to which I should be aware of?</p>