ref="https://github.com/sbcl/sbcl/blob/master/src/code/early-type.lisp/"><img alt="github" src="https://img.shields.io/badge/GitHub-View_the_source-5f9ea0.svg?style=social&amp;colorA=999999&amp;logo=github" /></a></p>
<blockquote>
<div>Takes and expands a type specifier once like MACROEXPAND-1.
Returns two values: the expansion, and a boolean that is true when
expansion happened.</div></blockquote>
<div class="section" id="lambda-list">
<span id="lambda-list"></span><h2>Lambda list<a class="headerlink" href