enabled, then the pattern is treated as a Unicode
pattern as described by the ECMAScript standard.</p>
<p>If <code>dotAll</code> is enabled, then the <code>.</code> pattern will match <em>all</em> characters,
including line terminators.</p>
<p>Example:</p>
<pre class="language-dart"><code class="language-dart">var wordPattern = RegExp(r"(\w+)");
var bracketedNumberValue = RegExp("$key: \\[\\d+\\]");
</code></pre>
<p>Notice the use of a <em>raw string</em> in the first example, and a regular
string in the se