label'>cur_label</span><span class='period'>.</span><span class='id identifier rubyid_text'>text</span> <span class='op'>=</span> <span class='id identifier rubyid_existing_text'>existing_text</span> <span class='op'>+</span> <span class='lparen'>(</span><span class='id identifier rubyid_existing_text'>existing_text</span> <span class='op'>==</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_end'>&#39;</span></span> <span class='op'>?</span> <span class='tstring'><span 