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    <p><a href="https://stackoverflow.com/questions/395783/truncate-markdown/395814#395814">My answer here</a> should do work. The original question (err, asked by me) was about truncating markdown, but I ended up converting the markdown to HTML then truncating that, so it should work.</p> <p>Of course if your site gets much traffic, you should cache the excerpt (perhaps when the post is created/updated, you could store the excerpt in the database?), this would also mean you could allow the user to modify or enter their own excerpt</p> <p>Usage:</p> <pre><code>&gt;&gt; puts "&lt;p&gt;&lt;b&gt;&lt;a href=\"hi\"&gt;Something&lt;/a&gt;&lt;/p&gt;".truncate_html(5, at_end = "...") =&gt; &lt;p&gt;&lt;b&gt;&lt;a href="hi"&gt;Someth...&lt;/a&gt;&lt;/b&gt;&lt;/p&gt; </code></pre> <p>..and the code (copied from the other answer):</p> <pre><code>require 'rexml/parsers/pullparser' class String def truncate_html(len = 30, at_end = nil) p = REXML::Parsers::PullParser.new(self) tags = [] new_len = len results = '' while p.has_next? &amp;&amp; new_len &gt; 0 p_e = p.pull case p_e.event_type when :start_element tags.push p_e[0] results &lt;&lt; "&lt;#{tags.last}#{attrs_to_s(p_e[1])}&gt;" when :end_element results &lt;&lt; "&lt;/#{tags.pop}&gt;" when :text results &lt;&lt; p_e[0][0..new_len] new_len -= p_e[0].length else results &lt;&lt; "&lt;!-- #{p_e.inspect} --&gt;" end end if at_end results &lt;&lt; "..." end tags.reverse.each do |tag| results &lt;&lt; "&lt;/#{tag}&gt;" end results end private def attrs_to_s(attrs) if attrs.empty? '' else ' ' + attrs.to_a.map { |attr| %{#{attr[0]}="#{attr[1]}"} }.join(' ') end end end </code></pre>
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    1. COoh i like yours, it fixes the problem with tags around the text
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