rs</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu">factor_regex</span><span class="op">(</span>m <span class="op">=</span> <span class="va">m0</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "(^as[.]factor[(]am[)]:as[.]factor[(]vs[)]|^as[.]factor[(]vs[)]|^as[.]factor[(]am[)]|^disp|^[(]Intercept[)])"</span>
</code></pre></div>
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