*</span><span class="mdzsyn-identifier">format</span><span class="mdzsyn-operator">,</span> <span class="mdzsyn-operator">.</span><span class="mdzsyn-operator">.</span><span class="mdzsyn-operator">.</span><span class="mdzsyn-operator">)</span><span class="mdzsyn-operator">;</span></code></pre><p>Use <code class="mendoza-code">janet_panicf</code> to create descriptive, formatted error messages for functions. The format string
is much like that of printf, but is specialized for working with Janet values.
The