<span class="pre">&lt;regular_expression&gt;</span></code> once and store the match in the
<code class="docutils literal notranslate"><span class="pre">&lt;output_variable&gt;</span></code>.
All <code class="docutils literal notranslate"><span class="pre">&lt;input&gt;</span></code> arguments are concatenated before matching.
Regular expressions are specified in the subsection just below.</p>
<div class="highlight-cmake notranslate" id="regex-matchall"><div class="highlight"><pre><span></span><span class="n