ce_variable_name" class="anchor"></a><code><span><span class="keyword">val</span> check_source_variable_name : 
  <span><span>(<span class="xref-unresolved">Stdlib</span>.Lexing.position * <span class="xref-unresolved">Stdlib</span>.Lexing.position)</span> <span class="arrow">&#45;&gt;</span></span>
  <span><span class="xref-unresolved">Base</span>.string <span class="arrow">&#45;&gt;</span></span>
  <span class="xref-unresolved">Base</span>.unit</span></code></div><div class="spec-doc"><p>Check that a vari