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<html>
<head>
<title>Regex syntax</title>
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<h1><a href="http://github.com/cgrand/regex/tree/master">Regex</a> syntax</h1>
<dl class="syntax">
<dt id="regex"><a href="#regex">regex</a></dt>
<dd><code>(regex</code> <a href="#group">group</a> <code>)</code></dd>
<dt id="group"><a href="#group">group</a></dt>
<dd><a href="#fragment">fragment</a>* (<code>:as</code> <code>:a-name</code>)? ; capturing only when named</dd>
<dt id="fragment"><a href="#fragment">fragment</a></dt>
<dd><code>\character</code></dd>
<dd><code>"string"</code></dd>
<dd><code>{</code> (<a href="#char">char</a> <a href="#char">char</a>)* <code>}</code> ; char ranges, both ends inclusive</dd>
<dd><code>[</code> <a href="#group">group</a> <code>]</code></dd>
<dd><code>#{</code> <a href="#fragment">fragment</a>* <code>}</code> ; alternative</dd>
<dd><code>a-symbol</code> ; must evaluate to a fragment</dd>
<dd><code>(some clojure code)</code> ; must evaluate to a fragment</dd>
<dd>; predefined helpers:</dd>
<dd><code>any</code> ; 1-character wildcard, aka .</dd>
<dd><code>(repeat</code> fragment <code>)</code> ; 0 to ∞</dd>
<dd><code>(repeat</code> fragment min <code>)</code> ; min to ∞</dd>
<dd><code>(repeat</code> fragment min max <code>)</code> ; min to max</dd>
<dd><code>(*</code> <a href="#group">group</a> <code>)</code> ; shorthand for (repeat [group])</dd>
<dd><code>(+</code> <a href="#group">group</a> <code>)</code> ; shorthand for (repeat [group] 1)</dd>
<dd><code>(?</code> <a href="#group">group</a> <code>)</code> ; shorthand for (repeat [group] 0 1)</dd>
<dt id="char"><a href="#char">char</a></dt>
<dd><code>\character</code></dd>
<dd><code>a-symbol</code> ; must evaluate to a character</dd>
<dd><code>(some clojure code)</code> ; must evaluate to a character</dd>
</dl>
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