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#!/usr/bin/php
<?php
/**
...

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private static Regex _namedtags = new Regex
    (@"</?(?<tagname>\w+)[^>]*(\s|$|>)",
    RegexOptions.Singleline | RegexOptions.ExplicitCapture);
...

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private static Regex _tags = new Regex("<[^>]*(>|$)", RegexOptions.Singleline | RegexOptions.ExplicitCapture | RegexOptions.Compiled);
private static Regex _whitelist = new Regex(@"
    ^</?(a|b(lockquote)?|code|em|h(1|2|3)|i|li|ol|p(re)?|s(ub|up|trong|trike)?|ul)>$
...

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<?php

function fetch($url,$start,$end){
...

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<%= (@post.category ? @post.category.name : '') + ' ' + link_to(@post.title, post_path(@post)) %>

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curl http://www.cnn.com | perl -ne 'm/>([^<].*?[^>])<\// && print$1."\n"'