 call 26&gt;: call_block(x)] </span>
<span class="co"># [&lt;R call 27&gt;: process_group.block(group)] </span>
<span class="co"># [&lt;R call 28&gt;: process_group(group)] </span>
<span class="co"># [&lt;R call 29&gt;: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group), error = function(e) {] </span>
<span class="co"># [&lt;R call 30&gt;: process_file(text, output)] </span>
<span class="co"># [&lt;R call 31&gt;: knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet)