ss="c">! step thru each character to find next delimiter, if any</span>
<span class="w">      </span><span class="k">if</span><span class="p">(</span><span class="nb">index</span><span class="p">(</span><span class="n">delimiters_local</span><span class="p">,</span><span class="n">source_string</span><span class="p">(</span><span class="n">token_end</span><span class="o">+</span><span class="mi">1</span><span class="p">:</span><span class="n">token_end</span><span class="o">+</span><span class="mi">1</span>