presents regular expressions.</p>
<p>While basic usage and patterns consistently work across platforms, some more
complex operations may yield different results. This is a necessary trade-
off to retain a certain level of performance.</p>
<p>EReg instances can be created by calling the constructor, or with the
special syntax ~/pattern/modifier</p>
<p>EReg instances maintain an internal state, which is affected by several of
its methods.</p>
<p>A detailed explanation of the supported operations is available 