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	diff --git a/lib/fast_sanitize/fragment.ex b/lib/fast_sanitize/fragment.ex
	index 90a69d3..abb9b33 100644
	--- a/lib/fast_sanitize/fragment.ex
	+++ b/lib/fast_sanitize/fragment.ex
	@@ -1,70 +1,71 @@
	defmodule FastSanitize.Fragment do
	- import Plug.HTML, only: [html_escape: 1]
	+ import Plug.HTML, only: [html_escape: 1, html_escape_to_iodata: 1]

	def to_tree(bin) do
	with {:html, _, [{:head, _, _}, {:body, _, fragment}]} <-
	Myhtmlex.decode(bin, format: [:nil_self_closing, :comment_tuple3, :html_atoms]) do
	{:ok, fragment}
	else
	e ->
	{:error, e}
	end
	end

	- defp build_attr_chunks([]) do
	- ""
	- end
	+ defp build_attr_chunks([]), do: ""

	defp build_attr_chunks(attrs) do
	- " " <>
	- (Enum.map(attrs, fn {k, v} ->
	- "#{html_escape(k)}=\"#{html_escape(v)}\""
	- end)
	- \|> Enum.join(" "))
	+ List.foldr(attrs, [], fn {k, v}, iodata ->
	+ [[" ", html_escape_to_iodata(k), "=\"", html_escape_to_iodata(v), "\""] \| iodata]
	+ end)
	end

	- defp build_start_tag(tag, attrs, nil), do: "<#{tag}#{build_attr_chunks(attrs)}/>"
	- defp build_start_tag(tag, attrs, _children) when length(attrs) == 0, do: "<#{tag}>"
	- defp build_start_tag(tag, attrs, _children), do: "<#{tag}#{build_attr_chunks(attrs)}>"
	+ defp build_start_tag(tag, attrs, nil), do: ["<", to_string(tag), build_attr_chunks(attrs), "/>"]
	+
	+ defp build_start_tag(tag, attrs, _children) when length(attrs) == 0,
	+ do: ["<", to_string(tag), ">"]
	+
	+ defp build_start_tag(tag, attrs, _children),
	+ do: ["<", to_string(tag), build_attr_chunks(attrs), ">"]

	# empty tuple - fragment was clobbered, return nothing
	+ defp fragment_to_html(nil), do: ""
	+
	defp fragment_to_html({}), do: ""

	# text node
	- defp fragment_to_html(text) when is_binary(text), do: html_escape(text)
	+ defp fragment_to_html(text) when is_binary(text), do: html_escape_to_iodata(text)

	# comment node
	- defp fragment_to_html({:comment, _, text}), do: "<!-- #{text} -->"
	+ defp fragment_to_html({:comment, _, text}), do: ["<!-- ", text, " -->"]

	# bare subtree
	defp fragment_to_html(subtree) when is_list(subtree) do
	{:ok, result} = subtree_to_html(subtree)
	result
	end

	# a node which can never accept children will have nil instead of a subtree
	defp fragment_to_html({tag, attrs, nil}), do: build_start_tag(tag, attrs, nil)

	# every other case, assume a subtree
	defp fragment_to_html({tag, attrs, subtree}) do
	with start_tag <- build_start_tag(tag, attrs, subtree),
	- end_tag <- "</#{tag}>",
	- {:ok, subtree} <- subtree_to_html(subtree) do
	+ end_tag <- ["</", to_string(tag), ">"],
	+ subtree <- subtree_to_iodata(subtree) do
	[start_tag, subtree, end_tag]
	- \|> Enum.join("")
	end
	end

	defp subtree_to_html([]), do: {:ok, ""}

	defp subtree_to_html(tree) do
	- rendered =
	- Enum.reject(tree, &is_nil/1)
	- \|> Enum.map(&fragment_to_html/1)
	- \|> Enum.join("")
	-
	+ iodata = subtree_to_iodata(tree)
	+ rendered = :erlang.iolist_to_binary(iodata)
	{:ok, rendered}
	end

	+ defp subtree_to_iodata(tree),
	+ do: List.foldr(tree, [], fn node, iodata -> [fragment_to_html(node) \| iodata] end)
	+
	def to_html(tree), do: subtree_to_html(tree)
	end
	diff --git a/lib/mix/tasks/fast_sanitize/bench.ex b/lib/mix/tasks/fast_sanitize/bench.ex
	new file mode 100644
	index 0000000..dc70cac
	--- /dev/null
	+++ b/lib/mix/tasks/fast_sanitize/bench.ex
	@@ -0,0 +1,25 @@
	+defmodule Mix.Tasks.FastSanitize.Bench do
	+ use Mix.Task
	+
	+ @input_dir "lib/mix/tasks/fast_sanitize/html"
	+
	+ def run(_) do
	+ inputs =
	+ Enum.reduce(File.ls!(@input_dir), %{}, fn input_name, acc ->
	+ IO.inspect(input_name)
	+ input = File.read!(Path.join(@input_dir, input_name))
	+ Map.put(acc, input_name, input)
	+ end)
	+ \|> IO.inspect()
	+
	+ Benchee.run(
	+ %{
	+ "FastSanitize strip tags" => fn input -> FastSanitize.strip_tags(input) end,
	+ "HtmlSanitizeex strip tags" => fn input -> HtmlSanitizeEx.strip_tags(input) end,
	+ "FastSanitize basic html" => fn input -> FastSanitize.basic_html(input) end,
	+ "HtmlSanitizeex basic html" => fn input -> HtmlSanitizeEx.basic_html(input) end
	+ },
	+ inputs: inputs
	+ )
	+ end
	+end
	diff --git a/lib/mix/tasks/fast_sanitize/html/document-medium.html b/lib/mix/tasks/fast_sanitize/html/document-medium.html
	new file mode 100644
	index 0000000..809b5b6
	--- /dev/null
	+++ b/lib/mix/tasks/fast_sanitize/html/document-medium.html
	@@ -0,0 +1,1512 @@
	+<!DOCTYPE html>
	+<html class=" ">
	+ <head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# object: http://ogp.me/ns/object# article: http://ogp.me/ns/article# profile: http://ogp.me/ns/profile#">
	+ <meta charset='utf-8'>
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	+
	+
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	+ <link rel="search" type="application/opensearchdescription+xml" href="/opensearch.xml" title="GitHub" />
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	+ <link href="https://github.com/rgrove/sanitize/commits/dev-3.0.0.atom" rel="alternate" title="Recent Commits to sanitize:dev-3.0.0" type="application/atom+xml" />
	+
	+ </head>
	+
	+
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	+
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	+ <li class="features"><a href="/features">Features</a></li>
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	+ <form accept-charset="UTF-8" action="/search" class="command-bar-form" id="top_search_form" method="get">
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	+
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	+ data-repo="rgrove/sanitize"
	+ data-branch="dev-3.0.0"
	+ data-sha="027259501299baa4767034acc355c600bd9ef720"
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	+
	+ <div class="select-menu js-menu-container js-select-menu search-context-select-menu">
	+ <span class="minibutton select-menu-button js-menu-target" role="button" aria-haspopup="true">
	+ <span class="js-select-button">This repository</span>
	+ </span>
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	+ <div class="select-menu-modal-holder js-menu-content js-navigation-container" aria-hidden="true">
	+ <div class="select-menu-modal">
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	+ <div class="select-menu-item js-navigation-item js-this-repository-navigation-item selected">
	+ <span class="select-menu-item-icon octicon octicon-check"></span>
	+ <input type="radio" class="js-search-this-repository" name="search_target" value="repository" checked="checked" />
	+ <div class="select-menu-item-text js-select-button-text">This repository</div>
	+ </div> <!-- /.select-menu-item -->
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	+ <div class="select-menu-item js-navigation-item js-all-repositories-navigation-item">
	+ <span class="select-menu-item-icon octicon octicon-check"></span>
	+ <input type="radio" name="search_target" value="global" />
	+ <div class="select-menu-item-text js-select-button-text">All repositories</div>
	+ </div> <!-- /.select-menu-item -->
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	+ <span class="octicon octicon-question"></span>
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	+ <div class="site" itemscope itemtype="http://schema.org/WebPage">
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	+ 65
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	+</ul>
	+
	+ <h1 itemscope itemtype="http://data-vocabulary.org/Breadcrumb" class="entry-title public">
	+ <span class="repo-label"><span>public</span></span>
	+ <span class="mega-octicon octicon-repo"></span>
	+ <span class="author"><a href="/rgrove" class="url fn" itemprop="url" rel="author"><span itemprop="title">rgrove</span></a></span><!--
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	+ --><strong><a href="/rgrove/sanitize" class="js-current-repository js-repo-home-link">sanitize</a></strong>
	+
	+ <span class="page-context-loader">
	+ <img alt="" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </span>
	+
	+ </h1>
	+ </div><!-- /.container -->
	+ </div><!-- /.repohead -->
	+
	+ <div class="container">
	+ <div class="repository-with-sidebar repo-container new-discussion-timeline js-new-discussion-timeline with-full-navigation ">
	+ <div class="repository-sidebar clearfix">
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	+
	+<div class="sunken-menu vertical-right repo-nav js-repo-nav js-repository-container-pjax js-octicon-loaders">
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	+ <span class="octicon octicon-code"></span> <span class="full-word">Code</span>
	+ <img alt="" class="mini-loader" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
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	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-20T12:45:52-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-20 12:45:52 -0700">May 20, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-directory"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/tree/dev-3.0.0/test" class="js-directory-link" id="098f6bcd4621d373cade4e832627b4f6-a01581020167c9550f0d5a9f9ecef904184a3ef9" title="test">test</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/5f2809e5e13341ff163d90f78981d729bfb00a58" class="message" data-pjax="true" title="Workaround for libxml2 forcibly adding a content-type meta tag.
	+
	+The version of libxml2 used by Nokogiri forcibly adds a content-type meta
	+tag to all documents with a <head> element during serialization, which is
	+stupid.
	+
	+See also: sparklemotion/nokogiri#1008">Workaround for libxml2 forcibly adding a content-type meta tag.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-20T12:45:00-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-20 12:45:00 -0700">May 20, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/.gitignore" class="js-directory-link" id="a084b794bc0759e7a6b77810e01874f2-cb3dddb63c369ba2982d52fe9e28ef45f3d803b8" title=".gitignore">.gitignore</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/21cece27a377d40b405fc54bdf942f8eecfb5008" class="message" data-pjax="true" title="Add .yardopts, and use yard to generate docs.">Add .yardopts, and use yard to generate docs.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2013-09-18T17:09:07-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2013-09-18 17:09:07 -0700">September 18, 2013</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/.travis.yml" class="js-directory-link" id="354f30a63fb0907d4ad57269548329e3-506f40c8582b2e3c0243bf2ebbbdc2220937cdc7" title=".travis.yml">.travis.yml</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/2ca27b786f5acbd48d7905204ff9a5410997eded" class="message" data-pjax="true" title="Travis: Test against Ruby 2.1.2.">Travis: Test against Ruby 2.1.2.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-18T16:12:39-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-18 16:12:39 -0700">May 18, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/.yardopts" class="js-directory-link" id="5808b886486adcc2f1820a316cd5652d-88c462fdff6253794381fc4e452bc34d9b2b3233" title=".yardopts">.yardopts</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/e28fc3ec6ea1db83de0c8dbaf55c08e7f72b4183" class="message" data-pjax="true" title="Include HISTORY.md in the docs.">Include HISTORY.md in the docs.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-19T17:20:29-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-19 17:20:29 -0700">May 19, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/Gemfile" class="js-directory-link" id="8b7db4d5cc4b8f6dc8feb7030baa2478-3be9c3cd812e6cb2d9d029ec79a88bf4662aa68b" title="Gemfile">Gemfile</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/8646dc2fb688cdd035daa35b32b7b873f3feceeb" class="message" data-pjax="true" title="Use https://rubygems.org.">Use</a> <a href="https://rubygems.org">https://rubygems.org</a><a href="/rgrove/sanitize/commit/8646dc2fb688cdd035daa35b32b7b873f3feceeb" class="message" data-pjax="true" title="Use https://rubygems.org.">.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-20T10:29:27-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-20 10:29:27 -0700">May 20, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/HISTORY.md" class="js-directory-link" id="88dc7475eedf918122374be6d7c2c151-41baeafc07a544dd990d21902ecfdcbbb1dbbdad" title="HISTORY.md">HISTORY.md</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/5f2809e5e13341ff163d90f78981d729bfb00a58" class="message" data-pjax="true" title="Workaround for libxml2 forcibly adding a content-type meta tag.
	+
	+The version of libxml2 used by Nokogiri forcibly adds a content-type meta
	+tag to all documents with a <head> element during serialization, which is
	+stupid.
	+
	+See also: sparklemotion/nokogiri#1008">Workaround for libxml2 forcibly adding a content-type meta tag.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-20T12:45:00-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-20 12:45:00 -0700">May 20, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/LICENSE" class="js-directory-link" id="9879d6db96fd29134fc802214163b95a-05549118f3b1bde9a88ac7c642ccb4590915b944" title="LICENSE">LICENSE</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/76ee6e448b5480c49a79ed1f7ed6f212069f272b" class="message" data-pjax="true" title="Release 2.1.0.">Release 2.1.0.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-01-13T15:27:16-08:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-01-13 15:27:16 -0800">January 13, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/README.md" class="js-directory-link" id="04c6e90faac2675aa89e2176d2eec7d8-356a35f993ab9b85d0fb9213e73a1feb92bfb4dd" title="README.md">README.md</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/301eda5ae733f650fe3e2d4498f306c3eddf4ac5" class="message" data-pjax="true" title="Deep freeze the built-in configs.
	+
	+Based on PR #75 from @pda.
	+
	+This also adds Sanitize::Config.merge(), which can be used to safely
	+deep-merge two configs (details in the readme).">Deep freeze the built-in configs.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-19T17:20:15-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-19 17:20:15 -0700">May 19, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/Rakefile" class="js-directory-link" id="52c976fc38ed2b4e3b1192f8a8e24cff-fd0ea81d9c35ecde722be2005a2b408df03c7fd9" title="Rakefile">Rakefile</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/eb618ad624798a22389b05a095d4c1f946a7e0ec" class="message" data-pjax="true" title="Remove redundant licenses.
	+
	+These things are so 90s.">Remove redundant licenses.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-17T20:51:02-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-17 20:51:02 -0700">May 17, 2014</time></span>
	+ </td>
	+ </tr>
	+ <tr>
	+ <td class="icon">
	+ <span class="octicon octicon-file-text"></span>
	+ <img alt="" class="spinner" height="16" src="https://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif" width="16" />
	+ </td>
	+ <td class="content">
	+ <span class="css-truncate css-truncate-target"><a href="/rgrove/sanitize/blob/dev-3.0.0/sanitize.gemspec" class="js-directory-link" id="b54405cb6293bf0eed12ec79eee871c8-f8b56a2a688848f3cea0e8e4155ede4f0c524753" title="sanitize.gemspec">sanitize.gemspec</a></span>
	+ </td>
	+ <td class="message">
	+ <span class="css-truncate css-truncate-target ">
	+ <a href="/rgrove/sanitize/commit/8c29d8480a3d2db7279ccf9c336b6498230e1bd5" class="message" data-pjax="true" title="Require Minitest ~> 5.3.4.">Require Minitest ~> 5.3.4.</a>
	+ </span>
	+ </td>
	+ <td class="age">
	+ <span class="css-truncate css-truncate-target"><time datetime="2014-05-17T15:36:08-07:00" is="relative-time" title-format="%Y-%m-%d %H:%M:%S %z" title="2014-05-17 15:36:08 -0700">May 17, 2014</time></span>
	+ </td>
	+ </tr>
	+</tbody>
	+
	+ </table>
	+ </div>
	+
	+
	+ <div id="readme" class="clearfix announce instapaper_body md">
	+ <span class="name">
	+ <span class="octicon octicon-book"></span>
	+ README.md
	+ </span>
	+
	+ <article class="markdown-body entry-content" itemprop="mainContentOfPage"><h1>
	+<a name="user-content-sanitize" class="anchor" href="#sanitize"><span class="octicon octicon-link"></span></a>Sanitize</h1>
	+
	+<p>Sanitize is a whitelist-based HTML sanitizer. Given a list of acceptable
	+elements and attributes, Sanitize will remove all unacceptable HTML from a
	+string.</p>
	+
	+<p>Using a simple configuration syntax, you can tell Sanitize to allow certain
	+elements, certain attributes within those elements, and even certain URL
	+protocols within attributes that contain URLs. Any HTML elements or attributes
	+that you don't explicitly allow will be removed.</p>
	+
	+<p>Sanitize is based on <a href="https://github.com/google/gumbo-parser">Google's Gumbo HTML5 parser</a>, which parses HTML
	+exactly the same way modern browsers do. As long as your whitelist config only
	+allows safe markup, even the most malformed or malicious input will be
	+transformed into safe output.</p>
	+
	+<p><a href="https://travis-ci.org/rgrove/sanitize"><img src="https://camo.githubusercontent.com/8cbb6b37206c06dca9aad142aeabdb2db8a5614b/68747470733a2f2f7472617669732d63692e6f72672f7267726f76652f73616e6974697a652e7376673f6272616e63683d6d6173746572" alt="Build Status" data-canonical-src="https://travis-ci.org/rgrove/sanitize.svg?branch=master" style="max-width:100%;"></a>
	+<a href="http://badge.fury.io/rb/sanitize"><img src="https://camo.githubusercontent.com/f74d6ba1eba40a388a496b343275302bdb4260d5/68747470733a2f2f62616467652e667572792e696f2f72622f73616e6974697a652e737667" alt="Gem Version" data-canonical-src="https://badge.fury.io/rb/sanitize.svg" style="max-width:100%;"></a></p>
	+
	+<h2>
	+<a name="user-content-links" class="anchor" href="#links"><span class="octicon octicon-link"></span></a>Links</h2>
	+
	+<ul class="task-list">
	+<li><a href="https://github.com/rgrove/sanitize/">Home</a></li>
	+<li><a href="http://rubydoc.info/github/rgrove/sanitize/master">API Docs</a></li>
	+<li><a href="https://github.com/rgrove/sanitize/issues">Issues</a></li>
	+</ul><h2>
	+<a name="user-content-installation" class="anchor" href="#installation"><span class="octicon octicon-link"></span></a>Installation</h2>
	+
	+<pre><code>gem install sanitize
	+</code></pre>
	+
	+<h2>
	+<a name="user-content-usage" class="anchor" href="#usage"><span class="octicon octicon-link"></span></a>Usage</h2>
	+
	+<p>Sanitize can sanitize both HTML fragments and fully qualified documents.</p>
	+
	+<h3>
	+<a name="user-content-fragments" class="anchor" href="#fragments"><span class="octicon octicon-link"></span></a>Fragments</h3>
	+
	+<p>A fragment is a snippet of HTML that doesn't contain a root-level <code><html></code>
	+element.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">html</span> <span class="o">=</span> <span class="s1">'<b><a href="http://foo.com/">foo</a></b><img src="bar.jpg">'</span>
	+
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">)</span>
	+<span class="c1"># => 'foo'</span>
	+</pre></div>
	+
	+<p>If you don't specify any configuration options, Sanitize will use its strictest
	+settings by default, which means it will strip all HTML and leave only safe text
	+behind.</p>
	+
	+<p>To keep certain elements, add them to the element whitelist.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'b'</span><span class="o">]</span><span class="p">)</span>
	+<span class="c1"># => '<b>foo</b>'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-documents" class="anchor" href="#documents"><span class="octicon octicon-link"></span></a>Documents</h3>
	+
	+<p>When sanitizing a document, the <code><html></code> element must be whitelisted. You can
	+also set <code>:allow_doctype</code> to <code>true</code> to allow well-formed document type
	+definitions.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">html</span> <span class="o">=</span> <span class="sx">%[</span>
	+<span class="sx"> <!DOCTYPE html></span>
	+<span class="sx"> <html></span>
	+<span class="sx"> <b><a href="http://foo.com/">foo</a></b><img src="bar.jpg"></span>
	+<span class="sx"> </html></span>
	+<span class="sx">]</span>
	+
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">document</span><span class="p">(</span><span class="n">html</span><span class="p">,</span>
	+ <span class="ss">:allow_doctype</span> <span class="o">=></span> <span class="kp">true</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'html'</span><span class="o">]</span>
	+<span class="p">)</span>
	+<span class="c1"># => "<!DOCTYPE html>\n<html>foo\n \n</html>\n"</span>
	+</pre></div>
	+
	+<h2>
	+<a name="user-content-configuration" class="anchor" href="#configuration"><span class="octicon octicon-link"></span></a>Configuration</h2>
	+
	+<p>In addition to the ultra-safe default settings, Sanitize comes with three other
	+built-in configurations that you can use out of the box or adapt to meet your
	+needs.</p>
	+
	+<h3>
	+<a name="user-content-sanitizeconfigrestricted" class="anchor" href="#sanitizeconfigrestricted"><span class="octicon octicon-link"></span></a>Sanitize::Config::RESTRICTED</h3>
	+
	+<p>Allows only very simple inline markup. No links, images, or block elements.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">RESTRICTED</span><span class="p">)</span>
	+<span class="c1"># => '<b>foo</b>'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-sanitizeconfigbasic" class="anchor" href="#sanitizeconfigbasic"><span class="octicon octicon-link"></span></a>Sanitize::Config::BASIC</h3>
	+
	+<p>Allows a variety of markup including formatting elements, links, and lists.</p>
	+
	+<p>Images and tables are not allowed, links are limited to FTP, HTTP, HTTPS, and
	+mailto protocols, and a <code>rel="nofollow"</code> attribute is added to all links to
	+mitigate SEO spam.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="p">)</span>
	+<span class="c1"># => '<b><a href="http://foo.com/" rel="nofollow">foo</a></b>'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-sanitizeconfigrelaxed" class="anchor" href="#sanitizeconfigrelaxed"><span class="octicon octicon-link"></span></a>Sanitize::Config::RELAXED</h3>
	+
	+<p>Allows an even wider variety of markup, including images and tables. Links are
	+still limited to FTP, HTTP, HTTPS, and mailto protocols, while images are
	+limited to HTTP and HTTPS. In this mode, <code>rel="nofollow"</code> is not added to links.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">RELAXED</span><span class="p">)</span>
	+<span class="c1"># => '<b><a href="http://foo.com/">foo</a></b><img src="bar.jpg">'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-custom-configuration" class="anchor" href="#custom-configuration"><span class="octicon octicon-link"></span></a>Custom Configuration</h3>
	+
	+<p>If the built-in modes don't meet your needs, you can easily specify a custom
	+configuration:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'a'</span><span class="p">,</span> <span class="s1">'span'</span><span class="o">]</span><span class="p">,</span>
	+
	+ <span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'href'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'span'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'class'</span><span class="o">]</span>
	+ <span class="p">},</span>
	+
	+ <span class="ss">:protocols</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'href'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="s1">'mailto'</span><span class="o">]</span><span class="p">}</span>
	+ <span class="p">}</span>
	+<span class="p">)</span>
	+</pre></div>
	+
	+<p>You can also start with one of Sanitize's built-in configurations and then
	+customize it to meet your needs.</p>
	+
	+<p>The built-in configs are deeply frozen to prevent people from modifying them
	+(either accidentally or maliciously). To customize a built-in config, create a
	+new copy using <code>Sanitize::Config.merge()</code>, like so:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Create a customized copy of the Basic config, adding <div> and <table> to the</span>
	+<span class="c1"># existing whitelisted elements.</span>
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="o">[</span><span class="ss">:elements</span><span class="o">]</span> <span class="o">+</span> <span class="o">[</span><span class="s1">'div'</span><span class="p">,</span> <span class="s1">'table'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="ss">:remove_contents</span> <span class="o">=></span> <span class="kp">true</span>
	+<span class="p">))</span>
	+</pre></div>
	+
	+<p>The example above adds the <code><div></code> and <code><table></code> elements to a copy of the
	+existing list of elements in <code>Sanitize::Config::BASIC</code>. If you instead want to
	+completely overwrite the elements array with your own, you can omit the <code>+</code>
	+operation:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Overwrite :elements instead of creating a copy with new entries.</span>
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'div'</span><span class="p">,</span> <span class="s1">'table'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="ss">:remove_contents</span> <span class="o">=></span> <span class="kp">true</span>
	+<span class="p">))</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-config-settings" class="anchor" href="#config-settings"><span class="octicon octicon-link"></span></a>Config Settings</h3>
	+
	+<h4>
	+<a name="user-content-add_attributes-hash" class="anchor" href="#add_attributes-hash"><span class="octicon octicon-link"></span></a>:add_attributes (Hash)</h4>
	+
	+<p>Attributes to add to specific elements. If the attribute already exists, it will
	+be replaced with the value specified here. Specify all element names and
	+attributes in lowercase.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:add_attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'rel'</span> <span class="o">=></span> <span class="s1">'nofollow'</span><span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-allow_comments-boolean" class="anchor" href="#allow_comments-boolean"><span class="octicon octicon-link"></span></a>:allow_comments (boolean)</h4>
	+
	+<p>Whether or not to allow HTML comments. Allowing comments is strongly
	+discouraged, since IE allows script execution within conditional comments. The
	+default value is <code>false</code>.</p>
	+
	+<h4>
	+<a name="user-content-allow_doctype-boolean" class="anchor" href="#allow_doctype-boolean"><span class="octicon octicon-link"></span></a>:allow_doctype (boolean)</h4>
	+
	+<p>Whether or not to allow well-formed HTML doctype declarations such as "<!DOCTYPE
	+html>" when sanitizing a document. This setting is ignored when sanitizing
	+fragments. The default value is <code>false</code>.</p>
	+
	+<h4>
	+<a name="user-content-attributes-hash" class="anchor" href="#attributes-hash"><span class="octicon octicon-link"></span></a>:attributes (Hash)</h4>
	+
	+<p>Attributes to allow on specific elements. Specify all element names and
	+attributes in lowercase.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'href'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'blockquote'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'cite'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'img'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'alt'</span><span class="p">,</span> <span class="s1">'src'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<p>If you'd like to allow certain attributes on all elements, use the symbol <code>:all</code>
	+instead of an element name.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Allow the class attribute on all elements.</span>
	+<span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="ss">:all</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'class'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'href'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<p>To allow arbitrary HTML5 <code>data-*</code> attributes, use the symbol <code>:data</code> in place of
	+an attribute name.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Allow arbitrary HTML5 data-* attributes on <div> elements.</span>
	+<span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'div'</span> <span class="o">=></span> <span class="o">[</span><span class="ss">:data</span><span class="o">]</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-elements-array" class="anchor" href="#elements-array"><span class="octicon octicon-link"></span></a>:elements (Array)</h4>
	+
	+<p>Array of HTML element names to allow. Specify all names in lowercase. Any
	+elements not in this array will be removed.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:elements</span> <span class="o">=></span> <span class="sx">%w[</span>
	+<span class="sx"> a abbr b blockquote br cite code dd dfn dl dt em i kbd li mark ol p pre</span>
	+<span class="sx"> q s samp small strike strong sub sup time u ul var</span>
	+<span class="sx">]</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-protocols-hash" class="anchor" href="#protocols-hash"><span class="octicon octicon-link"></span></a>:protocols (Hash)</h4>
	+
	+<p>URL protocols to allow in specific attributes. If an attribute is listed here
	+and contains a protocol other than those specified (or if it contains no
	+protocol at all), it will be removed.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:protocols</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'href'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'ftp'</span><span class="p">,</span> <span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="s1">'mailto'</span><span class="o">]</span><span class="p">},</span>
	+ <span class="s1">'img'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'src'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="o">]</span><span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<p>If you'd like to allow the use of relative URLs which don't have a protocol,
	+include the symbol <code>:relative</code> in the protocol array:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:protocols</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'href'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="ss">:relative</span><span class="o">]</span><span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-remove_contents-boolean-or-array" class="anchor" href="#remove_contents-boolean-or-array"><span class="octicon octicon-link"></span></a>:remove_contents (boolean or Array)</h4>
	+
	+<p>If set to <code>true</code>, Sanitize will remove the contents of any non-whitelisted
	+elements in addition to the elements themselves. By default, Sanitize leaves the
	+safe parts of an element's contents behind when the element is removed.</p>
	+
	+<p>If set to an array of element names, then only the contents of the specified
	+elements (when filtered) will be removed, and the contents of all other filtered
	+elements will be left behind.</p>
	+
	+<p>The default value is <code>false</code>.</p>
	+
	+<h4>
	+<a name="user-content-transformers" class="anchor" href="#transformers"><span class="octicon octicon-link"></span></a>:transformers</h4>
	+
	+<p>Custom transformer or array of custom transformers. See the Transformers section
	+below for details.</p>
	+
	+<h4>
	+<a name="user-content-whitespace_elements-hash" class="anchor" href="#whitespace_elements-hash"><span class="octicon octicon-link"></span></a>:whitespace_elements (Hash)</h4>
	+
	+<p>Hash of element names which, when removed, should have their contents surrounded
	+by whitespace to preserve readability.</p>
	+
	+<p>Each element name is a key pointing to another Hash, which provides the specific
	+whitespace that should be inserted <code>:before</code> and <code>:after</code> the removed element's
	+position. The <code>:after</code> value will only be inserted if the removed element has
	+children, in which case it will be inserted after those children.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:whitespace_elements</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'br'</span> <span class="o">=></span> <span class="p">{</span> <span class="ss">:before</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="ss">:after</span> <span class="o">=></span> <span class="s2">""</span> <span class="p">},</span>
	+ <span class="s1">'div'</span> <span class="o">=></span> <span class="p">{</span> <span class="ss">:before</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="ss">:after</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span> <span class="p">},</span>
	+ <span class="s1">'p'</span> <span class="o">=></span> <span class="p">{</span> <span class="ss">:before</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="ss">:after</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span> <span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h2>
	+<a name="user-content-transformers-1" class="anchor" href="#transformers-1"><span class="octicon octicon-link"></span></a>Transformers</h2>
	+
	+<p>Transformers allow you to filter and modify nodes using your own custom logic,
	+on top of (or instead of) Sanitize's core filter. A transformer is any object
	+that responds to <code>call()</code> (such as a lambda or proc).</p>
	+
	+<p>To use one or more transformers, pass them to the <code>:transformers</code> config
	+setting. You may pass a single transformer or an array of transformers.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:transformers</span> <span class="o">=></span> <span class="o">[</span>
	+ <span class="n">transformer_one</span><span class="p">,</span>
	+ <span class="n">transformer_two</span>
	+<span class="o">]</span><span class="p">)</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-input" class="anchor" href="#input"><span class="octicon octicon-link"></span></a>Input</h3>
	+
	+<p>Each transformer's <code>call()</code> method will be called once for each node in the HTML
	+(including elements, text nodes, comments, etc.), and will receive as an
	+argument a Hash that contains the following items:</p>
	+
	+<ul class="task-list">
	+<li><p><strong>:config</strong> - The current Sanitize configuration Hash.</p></li>
	+<li><p><strong>:is_whitelisted</strong> - <code>true</code> if the current node has been whitelisted by a
	+previous transformer, <code>false</code> otherwise. It's generally bad form to remove
	+a node that a previous transformer has whitelisted.</p></li>
	+<li><p><strong>:node</strong> - A <code>Nokogiri::XML::Node</code> object representing an HTML node. The
	+node may be an element, a text node, a comment, a CDATA node, or a document
	+fragment. Use Nokogiri's inspection methods (<code>element?</code>, <code>text?</code>, etc.) to
	+selectively ignore node types you aren't interested in.</p></li>
	+<li><p><strong>:node_name</strong> - The name of the current HTML node, always lowercase (e.g.
	+"div" or "span"). For non-element nodes, the name will be something like
	+"text", "comment", "#cdata-section", "#document-fragment", etc.</p></li>
	+<li><p><strong>:node_whitelist</strong> - Set of <code>Nokogiri::XML::Node</code> objects in the current
	+document that have been whitelisted by previous transformers, if any. It's
	+generally bad form to remove a node that a previous transformer has
	+whitelisted.</p></li>
	+</ul><h3>
	+<a name="user-content-output" class="anchor" href="#output"><span class="octicon octicon-link"></span></a>Output</h3>
	+
	+<p>A transformer doesn't have to return anything, but may optionally return a Hash,
	+which may contain the following items:</p>
	+
	+<ul class="task-list">
	+<li>
	+<strong>:node_whitelist</strong> - Array or Set of specific Nokogiri::XML::Node objects
	+to add to the document's whitelist, bypassing the current Sanitize config.
	+These specific nodes and all their attributes will be whitelisted, but
	+their children will not be.</li>
	+</ul><p>If a transformer returns anything other than a Hash, the return value will be
	+ignored.</p>
	+
	+<h3>
	+<a name="user-content-processing" class="anchor" href="#processing"><span class="octicon octicon-link"></span></a>Processing</h3>
	+
	+<p>Each transformer has full access to the <code>Nokogiri::XML::Node</code> that's passed into
	+it and to the rest of the document via the node's <code>document()</code> method. Any
	+changes made to the current node or to the document will be reflected instantly
	+in the document and passed on to subsequently called transformers and to
	+Sanitize itself. A transformer may even call Sanitize internally to perform
	+custom sanitization if needed.</p>
	+
	+<p>Nodes are passed into transformers in the order in which they're traversed.
	+Sanitize performs top-down traversal, meaning that nodes are traversed in the
	+same order you'd read them in the HTML, starting at the top node, then its first
	+child, and so on.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">html</span> <span class="o">=</span> <span class="sx">%[</span>
	+<span class="sx"> <header></span>
	+<span class="sx"> <span></span>
	+<span class="sx"> <strong>foo</strong></span>
	+<span class="sx"> </span></span>
	+<span class="sx"> <p>bar</p></span>
	+<span class="sx"> </header></span>
	+
	+<span class="sx"> <footer></footer></span>
	+<span class="sx">]</span>
	+
	+<span class="n">transformer</span> <span class="o">=</span> <span class="nb">lambda</span> <span class="k">do</span> <span class="o">\|</span><span class="n">env</span><span class="o">\|</span>
	+ <span class="nb">puts</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node_name</span><span class="o">]</span> <span class="k">if</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node</span><span class="o">].</span><span class="n">element?</span>
	+<span class="k">end</span>
	+
	+<span class="c1"># Prints "header", "span", "strong", "p", "footer".</span>
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:transformers</span> <span class="o">=></span> <span class="n">transformer</span><span class="p">)</span>
	+</pre></div>
	+
	+<p>Transformers have a tremendous amount of power, including the power to
	+completely bypass Sanitize's built-in filtering. Be careful! Your safety is in
	+your own hands.</p>
	+
	+<h3>
	+<a name="user-content-example-transformer-to-whitelist-youtube-video-embeds" class="anchor" href="#example-transformer-to-whitelist-youtube-video-embeds"><span class="octicon octicon-link"></span></a>Example: Transformer to whitelist YouTube video embeds</h3>
	+
	+<p>The following example demonstrates how to create a transformer that will safely
	+whitelist valid YouTube video embeds without having to blindly allow other kinds
	+of embedded content, which would be the case if you tried to do this by just
	+whitelisting all <code><iframe></code> elements:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">youtube_transformer</span> <span class="o">=</span> <span class="nb">lambda</span> <span class="k">do</span> <span class="o">\|</span><span class="n">env</span><span class="o">\|</span>
	+ <span class="n">node</span> <span class="o">=</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node</span><span class="o">]</span>
	+ <span class="n">node_name</span> <span class="o">=</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node_name</span><span class="o">]</span>
	+
	+ <span class="c1"># Don't continue if this node is already whitelisted or is not an element.</span>
	+ <span class="k">return</span> <span class="k">if</span> <span class="n">env</span><span class="o">[</span><span class="ss">:is_whitelisted</span><span class="o">]</span> <span class="o">\|\|</span> <span class="o">!</span><span class="n">node</span><span class="o">.</span><span class="n">element?</span>
	+
	+ <span class="c1"># Don't continue unless the node is an iframe.</span>
	+ <span class="k">return</span> <span class="k">unless</span> <span class="n">node_name</span> <span class="o">==</span> <span class="s1">'iframe'</span>
	+
	+ <span class="c1"># Verify that the video URL is actually a valid YouTube video URL.</span>
	+ <span class="k">return</span> <span class="k">unless</span> <span class="n">node</span><span class="o">[</span><span class="s1">'src'</span><span class="o">]</span> <span class="o">=~</span> <span class="sr">%r\|\A(?:https?:)?//(?:www\.)?youtube(?:-nocookie)?\.com/\|</span>
	+
	+ <span class="c1"># We're now certain that this is a YouTube embed, but we still need to run</span>
	+ <span class="c1"># it through a special Sanitize step to ensure that no unwanted elements or</span>
	+ <span class="c1"># attributes that don't belong in a YouTube embed can sneak in.</span>
	+ <span class="no">Sanitize</span><span class="o">.</span><span class="n">node!</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">{</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="sx">%w[iframe]</span><span class="p">,</span>
	+
	+ <span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'iframe'</span> <span class="o">=></span> <span class="sx">%w[allowfullscreen frameborder height src width]</span>
	+ <span class="p">}</span>
	+ <span class="p">})</span>
	+
	+ <span class="c1"># Now that we're sure that this is a valid YouTube embed and that there are</span>
	+ <span class="c1"># no unwanted elements or attributes hidden inside it, we can tell Sanitize</span>
	+ <span class="c1"># to whitelist the current node.</span>
	+ <span class="p">{</span><span class="ss">:node_whitelist</span> <span class="o">=></span> <span class="o">[</span><span class="n">node</span><span class="o">]</span><span class="p">}</span>
	+<span class="k">end</span>
	+
	+<span class="n">html</span> <span class="o">=</span> <span class="sx">%[</span>
	+<span class="sx"><iframe width="420" height="315" src="//www.youtube.com/embed/dQw4w9WgXcQ"</span>
	+<span class="sx"> frameborder="0" allowfullscreen></iframe></span>
	+<span class="sx">]</span>
	+
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:transformers</span> <span class="o">=></span> <span class="n">youtube_transformer</span><span class="p">)</span>
	+<span class="c1"># => '<iframe width="420" height="315" src="//www.youtube.com/embed/dQw4w9WgXcQ" frameborder="0" allowfullscreen=""></iframe>'</span>
	+</pre></div>
	+
	+<h2>
	+<a name="user-content-license" class="anchor" href="#license"><span class="octicon octicon-link"></span></a>License</h2>
	+
	+<p>Copyright (c) 2014 Ryan Grove (<a href="mailto:ryan@wonko.com">ryan@wonko.com</a>)</p>
	+
	+<p>Permission is hereby granted, free of charge, to any person obtaining a copy of
	+this software and associated documentation files (the 'Software'), to deal in
	+the Software without restriction, including without limitation the rights to
	+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
	+the Software, and to permit persons to whom the Software is furnished to do so,
	+subject to the following conditions:</p>
	+
	+<p>The above copyright notice and this permission notice shall be included in all
	+copies or substantial portions of the Software.</p>
	+
	+<p>THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
	+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
	+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
	+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</p></article>
	+ </div>
	+
	+
	+ </div>
	+
	+ </div><!-- /.repo-container -->
	+ <div class="modal-backdrop"></div>
	+ </div><!-- /.container -->
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	+
	+ </div><!-- /.wrapper -->
	+
	+ <div class="container">
	+ <div class="site-footer">
	+ <ul class="site-footer-links right">
	+ <li><a href="https://status.github.com/">Status</a></li>
	+ <li><a href="http://developer.github.com">API</a></li>
	+ <li><a href="http://training.github.com">Training</a></li>
	+ <li><a href="http://shop.github.com">Shop</a></li>
	+ <li><a href="/blog">Blog</a></li>
	+ <li><a href="/about">About</a></li>
	+
	+ </ul>
	+
	+ <a href="/">
	+ <span class="mega-octicon octicon-mark-github" title="GitHub"></span>
	+ </a>
	+
	+ <ul class="site-footer-links">
	+ <li>© 2014 <span title="0.08040s from github-fe124-cp1-prd.iad.github.net">GitHub</span>, Inc.</li>
	+ <li><a href="/site/terms">Terms</a></li>
	+ <li><a href="/site/privacy">Privacy</a></li>
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	+ <li><a href="/contact">Contact</a></li>
	+ </ul>
	+ </div><!-- /.site-footer -->
	+</div><!-- /.container -->
	+
	+
	+ <div class="fullscreen-overlay js-fullscreen-overlay" id="fullscreen_overlay">
	+ <div class="fullscreen-container js-fullscreen-container">
	+ <div class="textarea-wrap">
	+ <textarea name="fullscreen-contents" id="fullscreen-contents" class="fullscreen-contents js-fullscreen-contents" placeholder="" data-suggester="fullscreen_suggester"></textarea>
	+ </div>
	+ </div>
	+ <div class="fullscreen-sidebar">
	+ <a href="#" class="exit-fullscreen js-exit-fullscreen tooltipped tooltipped-w" aria-label="Exit Zen Mode">
	+ <span class="mega-octicon octicon-screen-normal"></span>
	+ </a>
	+ <a href="#" class="theme-switcher js-theme-switcher tooltipped tooltipped-w"
	+ aria-label="Switch themes">
	+ <span class="octicon octicon-color-mode"></span>
	+ </a>
	+ </div>
	+</div>
	+
	+
	+
	+ <div id="ajax-error-message" class="flash flash-error">
	+ <span class="octicon octicon-alert"></span>
	+ <a href="#" class="octicon octicon-remove-close close js-ajax-error-dismiss"></a>
	+ Something went wrong with that request. Please try again.
	+ </div>
	+
	+
	+ <script crossorigin="anonymous" src="https://assets-cdn.github.com/assets/frameworks-9027ad6a9d00434697fea4d0143670c6fb7b2471.js" type="text/javascript"></script>
	+ <script async="async" crossorigin="anonymous" src="https://assets-cdn.github.com/assets/github-cb8ceb101dbfeeab8bc4a2ee07ea2e5bdd668289.js" type="text/javascript"></script>
	+
	+
	+ </body>
	+</html>
	diff --git a/lib/mix/tasks/fast_sanitize/html/document-small.html b/lib/mix/tasks/fast_sanitize/html/document-small.html
	new file mode 100644
	index 0000000..ae18afb
	--- /dev/null
	+++ b/lib/mix/tasks/fast_sanitize/html/document-small.html
	@@ -0,0 +1,636 @@
	+<!DOCTYPE HTML>
	+<html>
	+ <head>
	+ <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
	+ <meta name="google-site-verification" content="jD7G7Ednk6nQ8Mw-UPZ2OwvTGyQ_WIn_DqFb87RjA70" />
	+ <title>Nokogiri</title>
	+ <link href="/stylesheets/blueprint/screen.css?1347888101" media="screen, projector" rel="stylesheet" type="text/css" />
	+ <link href="/stylesheets/application.css?1347888101" media="screen, projector" rel="stylesheet" type="text/css" />
	+ <link href="/stylesheets/shCore.css?1347888101" media="screen, projector" rel="stylesheet" type="text/css" />
	+ <link href="/stylesheets/shThemeDefault.css?1347888101" media="screen, projector" rel="stylesheet" type="text/css" />
	+ <link href="/stylesheets/blueprint/print.css?1347888101" media="print" rel="stylesheet" type="text/css" />
	+ <script src="/javascripts/prototype.js?1347888101" type="text/javascript"></script>
	+ <script src="/javascripts/scriptaculous.js?1347888101" type="text/javascript"></script>
	+ <script src="/javascripts/lowpro.js?1347888101" type="text/javascript"></script>
	+ <script src="/javascripts/behaviors.js?1347888101" type="text/javascript"></script>
	+ <!--[if lt IE 8]>
	+ <link href="/stylesheets/blueprint/ie.css?1347888101" media="screen, projector" rel="stylesheet" type="text/css" />
	+ <script src="/javascripts/html5.js?1347888101" type="text/javascript"></script>
	+ <![endif]-->
	+ <script src="/javascripts/shCore.js?1347888101" type="text/javascript"></script>
	+ <script src="/javascripts/shBrushRuby.js?1347888101" type="text/javascript"></script>
	+ <script src="/javascripts/shBrushCpp.js?1347888101" type="text/javascript"></script>
	+ <script src="/javascripts/shBrushXml.js?1347888101" type="text/javascript"></script>
	+ <script type="text/javascript">
	+ SyntaxHighlighter.all();
	+ </script>
	+ </head>
	+
	+ <body class="container">
	+ <div class="column span-24">
	+
	+ <header>
	+ <form action="/search" class="column span-12" id="site_search" method="get">
	+ <input class="ghosted" data-ghost="Search Site" id="q" name="q" type="text" value="Search Site" />
	+ <button>Search</button>
	+ </form>
	+
	+
	+ <dl id="urls" class="column span-12 last">
	+ <dt>Install</dt>
	+ <dd>sudo gem install nokogiri</dd>
	+
	+ <dt>Contribute</dt>
	+ <dd><a href="http://github.com/sparklemotion/nokogiri">github.com/sparklemotion/nokogiri</a></dd>
	+ </dl><!-- #urls -->
	+
	+ <h2 class="alt">An <abbr title="HyperText Markup Language">HTML</abbr>, <abbr title="eXtensible Markup Language">XML</abbr>, <abbr title="Simple API for XML">SAX</abbr>, <abbr class="alt">&</abbr> Reader parser with the ability to search documents via <abbr title="XML Path Language">XPath</abbr> or <abbr title="Cascading Style Sheets">CSS3</abbr> selectors… and much more</h2>
	+
	+ <h1>
	+ <a href="/">
	+ <abbr title="Japanese for 'handsaw'">
	+ <span class="english">Nokogi<span class="ri">ri</span></span>
	+ <span class="japanese">鋸</span>
	+ </abbr>
	+ </a>
	+ </h1>
	+
	+ <nav>
	+ <ul>
	+ <li><a href="/tutorials/installing_nokogiri.html" title="Installing Nokogiri">Installation</a></li>
	+ <li><a href="/tutorials" title="Examples of How to Use Nokogiri">Tutorials</a></li>
	+ <li><a href="/tutorials/getting_help.html" title="Getting Help and Reporting Issues">Getting Help</a></li>
	+ </ul>
	+ </nav>
	+ </header>
	+
	+
	+ <div id="sidebar" class="column span-8">
	+ <nav class="classes section">
	+ <h4>Files</h4>
	+ <span class="toggle_list">
	+ <a href="#" data-toggle="files_nav">
	+ Hide
	+ </a>
	+ </span>
	+
	+ <div id="files_nav">
	+ <ul id="files_nav">
	+
	+ <li><a href="/C_CODING_STYLE_rdoc.html">C_CODING_STYLE.rdoc</a></li>
	+
	+ <li><a href="/CHANGELOG_ja_rdoc.html">CHANGELOG.ja.rdoc</a></li>
	+
	+ <li><a href="/CHANGELOG_rdoc.html">CHANGELOG.rdoc</a></li>
	+
	+ <li><a href="/Manifest_txt.html">Manifest.txt</a></li>
	+
	+ <li><a href="/README_ja_rdoc.html">README.ja.rdoc</a></li>
	+
	+ <li><a href="/README_rdoc.html">README.rdoc</a></li>
	+
	+ </ul>
	+ </div>
	+ </nav>
	+ <nav class="classes section">
	+ <h4>Classes</h4>
	+ <span class="toggle_list">
	+ <a href="#" data-toggle="class_nav">
	+ Hide
	+ </a>
	+ </span>
	+
	+ <div id="class_nav">
	+ <form id="filter_classes">
	+ <input class="ghosted" data-ghost="Filter Classes" id="filter_classes_q" name="filter_classes_q" type="text" value="Filter Classes" />
	+ </form>
	+
	+ <ul id='classlist'>
	+
	+ <li data-name="Nokogiri">
	+ <a href="/Nokogiri.html">Nokogiri</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::CSS">
	+ <a href="/Nokogiri/CSS.html">Nokogiri::CSS</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::CSS::Node">
	+ <a href="/Nokogiri/CSS/Node.html">Nokogiri::CSS::Node</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::CSS::Parser">
	+ <a href="/Nokogiri/CSS/Parser.html">Nokogiri::CSS::Parser</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::CSS::SyntaxError">
	+ <a href="/Nokogiri/CSS/SyntaxError.html">Nokogiri::CSS::SyntaxError</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::CSS::Tokenizer">
	+ <a href="/Nokogiri/CSS/Tokenizer.html">Nokogiri::CSS::Tokenizer</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::CSS::Tokenizer::ScanError">
	+ <a href="/Nokogiri/CSS/Tokenizer/ScanError.html">Nokogiri::CSS::Tokenizer::ScanError</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::Decorators">
	+ <a href="/Nokogiri/Decorators.html">Nokogiri::Decorators</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::Decorators::Slop">
	+ <a href="/Nokogiri/Decorators/Slop.html">Nokogiri::Decorators::Slop</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::EncodingHandler">
	+ <a href="/Nokogiri/EncodingHandler.html">Nokogiri::EncodingHandler</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML">
	+ <a href="/Nokogiri/HTML.html">Nokogiri::HTML</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::Builder">
	+ <a href="/Nokogiri/HTML/Builder.html">Nokogiri::HTML::Builder</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::Document">
	+ <a href="/Nokogiri/HTML/Document.html">Nokogiri::HTML::Document</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::Document::EncodingReader">
	+ <a href="/Nokogiri/HTML/Document/EncodingReader.html">Nokogiri::HTML::Document::EncodingReader</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::Document::EncodingReader::JumpSAXHandler">
	+ <a href="/Nokogiri/HTML/Document/EncodingReader/JumpSAXHandler.html">Nokogiri::HTML::Document::EncodingReader::JumpSAXHandler</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::DocumentFragment">
	+ <a href="/Nokogiri/HTML/DocumentFragment.html">Nokogiri::HTML::DocumentFragment</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::ElementDescription">
	+ <a href="/Nokogiri/HTML/ElementDescription.html">Nokogiri::HTML::ElementDescription</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::EntityDescription">
	+ <a href="/Nokogiri/HTML/EntityDescription.html">Nokogiri::HTML::EntityDescription</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::EntityLookup">
	+ <a href="/Nokogiri/HTML/EntityLookup.html">Nokogiri::HTML::EntityLookup</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::SAX">
	+ <a href="/Nokogiri/HTML/SAX.html">Nokogiri::HTML::SAX</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::SAX::Parser">
	+ <a href="/Nokogiri/HTML/SAX/Parser.html">Nokogiri::HTML::SAX::Parser</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::SAX::ParserContext">
	+ <a href="/Nokogiri/HTML/SAX/ParserContext.html">Nokogiri::HTML::SAX::ParserContext</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::HTML::SAX::PushParser">
	+ <a href="/Nokogiri/HTML/SAX/PushParser.html">Nokogiri::HTML::SAX::PushParser</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::SyntaxError">
	+ <a href="/Nokogiri/SyntaxError.html">Nokogiri::SyntaxError</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML">
	+ <a href="/Nokogiri/XML.html">Nokogiri::XML</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Attr">
	+ <a href="/Nokogiri/XML/Attr.html">Nokogiri::XML::Attr</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::AttributeDecl">
	+ <a href="/Nokogiri/XML/AttributeDecl.html">Nokogiri::XML::AttributeDecl</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Builder">
	+ <a href="/Nokogiri/XML/Builder.html">Nokogiri::XML::Builder</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::CDATA">
	+ <a href="/Nokogiri/XML/CDATA.html">Nokogiri::XML::CDATA</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::CharacterData">
	+ <a href="/Nokogiri/XML/CharacterData.html">Nokogiri::XML::CharacterData</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Comment">
	+ <a href="/Nokogiri/XML/Comment.html">Nokogiri::XML::Comment</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::DTD">
	+ <a href="/Nokogiri/XML/DTD.html">Nokogiri::XML::DTD</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Document">
	+ <a href="/Nokogiri/XML/Document.html">Nokogiri::XML::Document</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::DocumentFragment">
	+ <a href="/Nokogiri/XML/DocumentFragment.html">Nokogiri::XML::DocumentFragment</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Element">
	+ <a href="/Nokogiri/XML/Element.html">Nokogiri::XML::Element</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::ElementContent">
	+ <a href="/Nokogiri/XML/ElementContent.html">Nokogiri::XML::ElementContent</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::ElementDecl">
	+ <a href="/Nokogiri/XML/ElementDecl.html">Nokogiri::XML::ElementDecl</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::EntityDecl">
	+ <a href="/Nokogiri/XML/EntityDecl.html">Nokogiri::XML::EntityDecl</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::EntityReference">
	+ <a href="/Nokogiri/XML/EntityReference.html">Nokogiri::XML::EntityReference</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Namespace">
	+ <a href="/Nokogiri/XML/Namespace.html">Nokogiri::XML::Namespace</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Node">
	+ <a href="/Nokogiri/XML/Node.html">Nokogiri::XML::Node</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Node::SaveOptions">
	+ <a href="/Nokogiri/XML/Node/SaveOptions.html">Nokogiri::XML::Node::SaveOptions</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::NodeSet">
	+ <a href="/Nokogiri/XML/NodeSet.html">Nokogiri::XML::NodeSet</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Notation">
	+ <a href="/Nokogiri/XML/Notation.html">Nokogiri::XML::Notation</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::PP">
	+ <a href="/Nokogiri/XML/PP.html">Nokogiri::XML::PP</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::PP::CharacterData">
	+ <a href="/Nokogiri/XML/PP/CharacterData.html">Nokogiri::XML::PP::CharacterData</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::PP::Node">
	+ <a href="/Nokogiri/XML/PP/Node.html">Nokogiri::XML::PP::Node</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::ParseOptions">
	+ <a href="/Nokogiri/XML/ParseOptions.html">Nokogiri::XML::ParseOptions</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::ProcessingInstruction">
	+ <a href="/Nokogiri/XML/ProcessingInstruction.html">Nokogiri::XML::ProcessingInstruction</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Reader">
	+ <a href="/Nokogiri/XML/Reader.html">Nokogiri::XML::Reader</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::RelaxNG">
	+ <a href="/Nokogiri/XML/RelaxNG.html">Nokogiri::XML::RelaxNG</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SAX">
	+ <a href="/Nokogiri/XML/SAX.html">Nokogiri::XML::SAX</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SAX::Document">
	+ <a href="/Nokogiri/XML/SAX/Document.html">Nokogiri::XML::SAX::Document</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SAX::Parser">
	+ <a href="/Nokogiri/XML/SAX/Parser.html">Nokogiri::XML::SAX::Parser</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SAX::Parser::Attribute">
	+ <a href="/Nokogiri/XML/SAX/Parser/Attribute.html">Nokogiri::XML::SAX::Parser::Attribute</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SAX::ParserContext">
	+ <a href="/Nokogiri/XML/SAX/ParserContext.html">Nokogiri::XML::SAX::ParserContext</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SAX::PushParser">
	+ <a href="/Nokogiri/XML/SAX/PushParser.html">Nokogiri::XML::SAX::PushParser</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Schema">
	+ <a href="/Nokogiri/XML/Schema.html">Nokogiri::XML::Schema</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::SyntaxError">
	+ <a href="/Nokogiri/XML/SyntaxError.html">Nokogiri::XML::SyntaxError</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::Text">
	+ <a href="/Nokogiri/XML/Text.html">Nokogiri::XML::Text</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::XPath">
	+ <a href="/Nokogiri/XML/XPath.html">Nokogiri::XML::XPath</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::XPath::SyntaxError">
	+ <a href="/Nokogiri/XML/XPath/SyntaxError.html">Nokogiri::XML::XPath::SyntaxError</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XML::XPathContext">
	+ <a href="/Nokogiri/XML/XPathContext.html">Nokogiri::XML::XPathContext</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XSLT">
	+ <a href="/Nokogiri/XSLT.html">Nokogiri::XSLT</a>
	+ </li>
	+
	+ <li data-name="Nokogiri::XSLT::Stylesheet">
	+ <a href="/Nokogiri/XSLT/Stylesheet.html">Nokogiri::XSLT::Stylesheet</a>
	+ </li>
	+
	+ <li data-name="Object">
	+ <a href="/Object.html">Object</a>
	+ </li>
	+
	+ <li data-name="XSD">
	+ <a href="/XSD.html">XSD</a>
	+ </li>
	+
	+ <li data-name="XSD::XMLParser">
	+ <a href="/XSD/XMLParser.html">XSD::XMLParser</a>
	+ </li>
	+
	+ <li data-name="XSD::XMLParser::Nokogiri">
	+ <a href="/XSD/XMLParser/Nokogiri.html">XSD::XMLParser::Nokogiri</a>
	+ </li>
	+
	+ </ul>
	+
	+ <p id="noclassmatch" class="no_results error" style="display: none;">
	+ No results found. Sorry.
	+ </p>
	+ </div>
	+ </nav>
	+
	+
	+ </div><!-- #sidebar -->
	+
	+ <article class="column span-15 prepend-1 last">
	+<header>
	+ <h3>
	+ <span class="class">
	+ README.rdoc
	+ </span>
	+ </h3>
	+</header>
	+
	+
	+ <section id="description" class="alt">
	+ <h1><a href="Nokogiri.html">Nokogiri</a> <a href="http://travis-ci.org/sparklemotion/nokogiri"><img src="https://secure.travis-ci.org/sparklemotion/nokogiri.png?rvm=1.9.3" /></a> <a href="https://codeclimate.com/github/sparklemotion/nokogiri"><img src="https://codeclimate.com/badge.png" /></a></h1>
	+<ul><li>
	+<p><a href="http://nokogiri.org">nokogiri.org</a></p>
	+</li><li>
	+<p><a
	+href="http://github.com/sparklemotion/nokogiri/wikis">github.com/sparklemotion/nokogiri/wikis</a></p>
	+</li><li>
	+<p><a
	+href="http://github.com/sparklemotion/nokogiri/tree/master">github.com/sparklemotion/nokogiri/tree/master</a></p>
	+</li><li>
	+<p><a
	+href="http://groups.google.com/group/nokogiri-talk">groups.google.com/group/nokogiri-talk</a></p>
	+</li><li>
	+<p><a
	+href="http://github.com/sparklemotion/nokogiri/issues">github.com/sparklemotion/nokogiri/issues</a></p>
	+</li></ul>
	+
	+<h2>DESCRIPTION:</h2>
	+
	+<p><a href="Nokogiri.html">Nokogiri</a> (鋸) is an HTML, XML, SAX, and Reader
	+parser. Among Nokogiri’s many features is the ability to search documents
	+via XPath or CSS3 selectors.</p>
	+
	+<p>XML is like violence - if it doesn’t solve your problems, you are not using
	+enough of it.</p>
	+
	+<h2>FEATURES:</h2>
	+<ul><li>
	+<p>XPath support for document searching</p>
	+</li><li>
	+<p>CSS3 selector support for document searching</p>
	+</li><li>
	+<p>XML/HTML builder</p>
	+</li></ul>
	+
	+<p><a href="Nokogiri.html">Nokogiri</a> parses and searches XML/HTML very
	+quickly, and also has correctly implemented CSS3 selector support as well
	+as XPath support.</p>
	+
	+<h2>SUPPORT:</h2>
	+
	+<p>Before filing a bug report, please read our <a
	+href="http://nokogiri.org/tutorials/getting_help.html">submission
	+guidelines</a> at:</p>
	+
	+<pre>* http://nokogiri.org/tutorials/getting_help.html</pre>
	+
	+<p>The <a href="Nokogiri.html">Nokogiri</a> <a
	+href="http://groups.google.com/group/nokogiri-talk">mailing list</a> is
	+available here:</p>
	+
	+<pre>* http://groups.google.com/group/nokogiri-talk</pre>
	+
	+<p>The <a href="http://github.com/sparklemotion/nokogiri/issues">bug
	+tracker</a> is available here:</p>
	+
	+<pre>* http://github.com/sparklemotion/nokogiri/issues</pre>
	+
	+<p>The IRC channel is #nokogiri on freenode.</p>
	+
	+<h2>SYNOPSIS:</h2>
	+
	+<pre>require 'nokogiri'
	+require 'open-uri'
	+
	+# Get a Nokogiri::HTML::Document for the page we’re interested in...
	+
	+doc = Nokogiri::HTML(open('http://www.google.com/search?q=sparklemotion'))
	+
	+# Do funky things with it using Nokogiri::XML::Node methods...
	+
	+####
	+# Search for nodes by css
	+doc.css('h3.r a').each do \|link\|
	+puts link.content
	+end
	+
	+####
	+# Search for nodes by xpath
	+doc.xpath('//h3/a').each do \|link\|
	+puts link.content
	+end
	+
	+####
	+# Or mix and match.
	+doc.search('h3.r a.l', '//h3/a').each do \|link\|
	+puts link.content
	+end</pre>
	+
	+<h2>REQUIREMENTS:</h2>
	+<ul><li>
	+<p>ruby 1.8 or 1.9</p>
	+</li><li>
	+<p>libxml2</p>
	+</li><li>
	+<p>libxml2-dev</p>
	+</li><li>
	+<p>libxslt</p>
	+</li><li>
	+<p>libxslt-dev</p>
	+</li></ul>
	+
	+<h2>ENCODING:</h2>
	+
	+<p>Strings are always stored as UTF-8 internally. Methods that return text
	+values will always return UTF-8 encoded strings. Methods that return XML
	+(like to_xml, to_html and inner_html) will return a string encoded like the
	+source document.</p>
	+
	+<p><b>WARNING</b></p>
	+
	+<p>Some documents declare one particular encoding, but use a different one.
	+So, which encoding should the parser choose?</p>
	+
	+<p>Remember that data is just a stream of bytes. Only we humans add meaning to
	+that stream. Any particular set of bytes could be valid characters in
	+multiple encodings, so detecting encoding with 100% accuracy is not
	+possible. libxml2 does its best, but it can’t be right 100% of the time.</p>
	+
	+<p>If you want <a href="Nokogiri.html">Nokogiri</a> to handle the document
	+encoding properly, your best bet is to explicitly set the encoding. Here
	+is an example of explicitly setting the encoding to EUC-JP on the parser:</p>
	+
	+<pre>doc = Nokogiri.XML('<foo><bar /><foo>', nil, 'EUC-JP')</pre>
	+
	+<h2>INSTALL:</h2>
	+<ul><li>
	+<p>sudo gem install nokogiri</p>
	+</li></ul>
	+
	+<h3>Binary packages</h3>
	+
	+<p>Binary packages are available for:</p>
	+<ul><li>
	+<p><a
	+href="http://download.opensuse.org/repositories/devel:/languages:/ruby:/extensions/">SuSE</a></p>
	+</li><li>
	+<p><a
	+href="http://s390.koji.fedoraproject.org/koji/packageinfo?packageID=6756">Fedora</a></p>
	+</li></ul>
	+
	+<h2>DEVELOPMENT:</h2>
	+
	+<h3>Developing on C Ruby (MRI)</h3>
	+
	+<p>Developing <a href="Nokogiri.html">Nokogiri</a> requires racc and rexical
	+to generate the parser and tokenizer. To start development, make sure you
	+have `libxml2` and `libxslt` installed.</p>
	+
	+<p>Then install hoe and rake-compiler:</p>
	+
	+<pre>$ gem install hoe rake-compiler racc rexical minitest</pre>
	+
	+<p>Then run rake:</p>
	+
	+<pre>$ rake</pre>
	+
	+<h3>Developing on JRuby</h3>
	+
	+<p>Currently, development with JRuby depends on CRuby being installed. With
	+CRuby, install racc and rexical:</p>
	+
	+<pre>$ gem install racc rexical</pre>
	+
	+<p>Make sure hoe and rake compiler are installed with JRuby:</p>
	+
	+<pre>$ jgem install hoe rake-compiler</pre>
	+
	+<p>Then run rake:</p>
	+
	+<pre>$ jruby -S rake</pre>
	+
	+<h2>LICENSE:</h2>
	+
	+<p>(The MIT License)</p>
	+
	+<p>Copyright © 2008 - 2012:</p>
	+<ul><li>
	+<p><a href="http://tenderlovemaking.com">Aaron Patterson</a></p>
	+</li><li>
	+<p><a href="http://mike.daless.io">Mike Dalessio</a></p>
	+</li><li>
	+<p><a href="http://blog.headius.com">Charles Nutter</a></p>
	+</li><li>
	+<p><a href="http://www.serabe.com">Sergio Arbeo</a></p>
	+</li><li>
	+<p><a href="http://polycrystal.org">Patrick Mahoney</a></p>
	+</li><li>
	+<p><a href="http://yokolet.blogspot.com">Yoko Harada</a></p>
	+</li></ul>
	+
	+<p>Permission is hereby granted, free of charge, to any person obtaining a
	+copy of this software and associated documentation files (the ‘Software’),
	+to deal in the Software without restriction, including without limitation
	+the rights to use, copy, modify, merge, publish, distribute, sublicense,
	+and/or sell copies of the Software, and to permit persons to whom the
	+Software is furnished to do so, subject to the following conditions:</p>
	+
	+<p>The above copyright notice and this permission notice shall be included in
	+all copies or substantial portions of the Software.</p>
	+
	+<p>THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	+DEALINGS IN THE SOFTWARE.</p>
	+ </section>
	+
	+
	+ </article>
	+
	+ <footer class="column span-24">
	+ <p class="alt"><abbr title="eXtensible Markup Language">XML</abbr> is like violence — if it doesn’t solve your problems, you are not using enough of it</p>
	+ </footer>
	+
	+ </div><!-- .container -->
	+ </body>
	+ <script type="text/javascript">
	+ var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
	+ document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
	+ </script>
	+ <script type="text/javascript">
	+ try {
	+ var pageTracker = _gat._getTracker("UA-1260604-8");
	+ pageTracker._trackPageview();
	+ } catch(err) {}</script>
	+</html>
	diff --git a/lib/mix/tasks/fast_sanitize/html/fragment-large.html b/lib/mix/tasks/fast_sanitize/html/fragment-large.html
	new file mode 100644
	index 0000000..8260edc
	--- /dev/null
	+++ b/lib/mix/tasks/fast_sanitize/html/fragment-large.html
	@@ -0,0 +1,466 @@
	+ <div id="readme" class="clearfix announce instapaper_body md">
	+ <span class="name">
	+ <span class="octicon octicon-book"></span>
	+ README.md
	+ </span>
	+
	+ <article class="markdown-body entry-content" itemprop="mainContentOfPage"><h1>
	+<a name="user-content-sanitize" class="anchor" href="#sanitize"><span class="octicon octicon-link"></span></a>Sanitize</h1>
	+
	+<p>Sanitize is a whitelist-based HTML sanitizer. Given a list of acceptable
	+elements and attributes, Sanitize will remove all unacceptable HTML from a
	+string.</p>
	+
	+<p>Using a simple configuration syntax, you can tell Sanitize to allow certain
	+elements, certain attributes within those elements, and even certain URL
	+protocols within attributes that contain URLs. Any HTML elements or attributes
	+that you don't explicitly allow will be removed.</p>
	+
	+<p>Sanitize is based on <a href="https://github.com/google/gumbo-parser">Google's Gumbo HTML5 parser</a>, which parses HTML
	+exactly the same way modern browsers do. As long as your whitelist config only
	+allows safe markup, even the most malformed or malicious input will be
	+transformed into safe output.</p>
	+
	+<p><a href="https://travis-ci.org/rgrove/sanitize"><img src="https://camo.githubusercontent.com/8cbb6b37206c06dca9aad142aeabdb2db8a5614b/68747470733a2f2f7472617669732d63692e6f72672f7267726f76652f73616e6974697a652e7376673f6272616e63683d6d6173746572" alt="Build Status" data-canonical-src="https://travis-ci.org/rgrove/sanitize.svg?branch=master" style="max-width:100%;"></a>
	+<a href="http://badge.fury.io/rb/sanitize"><img src="https://camo.githubusercontent.com/f74d6ba1eba40a388a496b343275302bdb4260d5/68747470733a2f2f62616467652e667572792e696f2f72622f73616e6974697a652e737667" alt="Gem Version" data-canonical-src="https://badge.fury.io/rb/sanitize.svg" style="max-width:100%;"></a></p>
	+
	+<h2>
	+<a name="user-content-links" class="anchor" href="#links"><span class="octicon octicon-link"></span></a>Links</h2>
	+
	+<ul class="task-list">
	+<li><a href="https://github.com/rgrove/sanitize/">Home</a></li>
	+<li><a href="http://rubydoc.info/github/rgrove/sanitize/master">API Docs</a></li>
	+<li><a href="https://github.com/rgrove/sanitize/issues">Issues</a></li>
	+</ul><h2>
	+<a name="user-content-installation" class="anchor" href="#installation"><span class="octicon octicon-link"></span></a>Installation</h2>
	+
	+<pre><code>gem install sanitize
	+</code></pre>
	+
	+<h2>
	+<a name="user-content-usage" class="anchor" href="#usage"><span class="octicon octicon-link"></span></a>Usage</h2>
	+
	+<p>Sanitize can sanitize both HTML fragments and fully qualified documents.</p>
	+
	+<h3>
	+<a name="user-content-fragments" class="anchor" href="#fragments"><span class="octicon octicon-link"></span></a>Fragments</h3>
	+
	+<p>A fragment is a snippet of HTML that doesn't contain a root-level <code><html></code>
	+element.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">html</span> <span class="o">=</span> <span class="s1">'<b><a href="http://foo.com/">foo</a></b><img src="bar.jpg">'</span>
	+
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">)</span>
	+<span class="c1"># => 'foo'</span>
	+</pre></div>
	+
	+<p>If you don't specify any configuration options, Sanitize will use its strictest
	+settings by default, which means it will strip all HTML and leave only safe text
	+behind.</p>
	+
	+<p>To keep certain elements, add them to the element whitelist.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'b'</span><span class="o">]</span><span class="p">)</span>
	+<span class="c1"># => '<b>foo</b>'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-documents" class="anchor" href="#documents"><span class="octicon octicon-link"></span></a>Documents</h3>
	+
	+<p>When sanitizing a document, the <code><html></code> element must be whitelisted. You can
	+also set <code>:allow_doctype</code> to <code>true</code> to allow well-formed document type
	+definitions.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">html</span> <span class="o">=</span> <span class="sx">%[</span>
	+<span class="sx"> <!DOCTYPE html></span>
	+<span class="sx"> <html></span>
	+<span class="sx"> <b><a href="http://foo.com/">foo</a></b><img src="bar.jpg"></span>
	+<span class="sx"> </html></span>
	+<span class="sx">]</span>
	+
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">document</span><span class="p">(</span><span class="n">html</span><span class="p">,</span>
	+ <span class="ss">:allow_doctype</span> <span class="o">=></span> <span class="kp">true</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'html'</span><span class="o">]</span>
	+<span class="p">)</span>
	+<span class="c1"># => "<!DOCTYPE html>\n<html>foo\n \n</html>\n"</span>
	+</pre></div>
	+
	+<h2>
	+<a name="user-content-configuration" class="anchor" href="#configuration"><span class="octicon octicon-link"></span></a>Configuration</h2>
	+
	+<p>In addition to the ultra-safe default settings, Sanitize comes with three other
	+built-in configurations that you can use out of the box or adapt to meet your
	+needs.</p>
	+
	+<h3>
	+<a name="user-content-sanitizeconfigrestricted" class="anchor" href="#sanitizeconfigrestricted"><span class="octicon octicon-link"></span></a>Sanitize::Config::RESTRICTED</h3>
	+
	+<p>Allows only very simple inline markup. No links, images, or block elements.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">RESTRICTED</span><span class="p">)</span>
	+<span class="c1"># => '<b>foo</b>'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-sanitizeconfigbasic" class="anchor" href="#sanitizeconfigbasic"><span class="octicon octicon-link"></span></a>Sanitize::Config::BASIC</h3>
	+
	+<p>Allows a variety of markup including formatting elements, links, and lists.</p>
	+
	+<p>Images and tables are not allowed, links are limited to FTP, HTTP, HTTPS, and
	+mailto protocols, and a <code>rel="nofollow"</code> attribute is added to all links to
	+mitigate SEO spam.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="p">)</span>
	+<span class="c1"># => '<b><a href="http://foo.com/" rel="nofollow">foo</a></b>'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-sanitizeconfigrelaxed" class="anchor" href="#sanitizeconfigrelaxed"><span class="octicon octicon-link"></span></a>Sanitize::Config::RELAXED</h3>
	+
	+<p>Allows an even wider variety of markup, including images and tables. Links are
	+still limited to FTP, HTTP, HTTPS, and mailto protocols, while images are
	+limited to HTTP and HTTPS. In this mode, <code>rel="nofollow"</code> is not added to links.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">RELAXED</span><span class="p">)</span>
	+<span class="c1"># => '<b><a href="http://foo.com/">foo</a></b><img src="bar.jpg">'</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-custom-configuration" class="anchor" href="#custom-configuration"><span class="octicon octicon-link"></span></a>Custom Configuration</h3>
	+
	+<p>If the built-in modes don't meet your needs, you can easily specify a custom
	+configuration:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'a'</span><span class="p">,</span> <span class="s1">'span'</span><span class="o">]</span><span class="p">,</span>
	+
	+ <span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'href'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'span'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'class'</span><span class="o">]</span>
	+ <span class="p">},</span>
	+
	+ <span class="ss">:protocols</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'href'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="s1">'mailto'</span><span class="o">]</span><span class="p">}</span>
	+ <span class="p">}</span>
	+<span class="p">)</span>
	+</pre></div>
	+
	+<p>You can also start with one of Sanitize's built-in configurations and then
	+customize it to meet your needs.</p>
	+
	+<p>The built-in configs are deeply frozen to prevent people from modifying them
	+(either accidentally or maliciously). To customize a built-in config, create a
	+new copy using <code>Sanitize::Config.merge()</code>, like so:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Create a customized copy of the Basic config, adding <div> and <table> to the</span>
	+<span class="c1"># existing whitelisted elements.</span>
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="o">[</span><span class="ss">:elements</span><span class="o">]</span> <span class="o">+</span> <span class="o">[</span><span class="s1">'div'</span><span class="p">,</span> <span class="s1">'table'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="ss">:remove_contents</span> <span class="o">=></span> <span class="kp">true</span>
	+<span class="p">))</span>
	+</pre></div>
	+
	+<p>The example above adds the <code><div></code> and <code><table></code> elements to a copy of the
	+existing list of elements in <code>Sanitize::Config::BASIC</code>. If you instead want to
	+completely overwrite the elements array with your own, you can omit the <code>+</code>
	+operation:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Overwrite :elements instead of creating a copy with new entries.</span>
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="no">Sanitize</span><span class="o">::</span><span class="no">Config</span><span class="o">::</span><span class="no">BASIC</span><span class="p">,</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'div'</span><span class="p">,</span> <span class="s1">'table'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="ss">:remove_contents</span> <span class="o">=></span> <span class="kp">true</span>
	+<span class="p">))</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-config-settings" class="anchor" href="#config-settings"><span class="octicon octicon-link"></span></a>Config Settings</h3>
	+
	+<h4>
	+<a name="user-content-add_attributes-hash" class="anchor" href="#add_attributes-hash"><span class="octicon octicon-link"></span></a>:add_attributes (Hash)</h4>
	+
	+<p>Attributes to add to specific elements. If the attribute already exists, it will
	+be replaced with the value specified here. Specify all element names and
	+attributes in lowercase.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:add_attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'rel'</span> <span class="o">=></span> <span class="s1">'nofollow'</span><span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-allow_comments-boolean" class="anchor" href="#allow_comments-boolean"><span class="octicon octicon-link"></span></a>:allow_comments (boolean)</h4>
	+
	+<p>Whether or not to allow HTML comments. Allowing comments is strongly
	+discouraged, since IE allows script execution within conditional comments. The
	+default value is <code>false</code>.</p>
	+
	+<h4>
	+<a name="user-content-allow_doctype-boolean" class="anchor" href="#allow_doctype-boolean"><span class="octicon octicon-link"></span></a>:allow_doctype (boolean)</h4>
	+
	+<p>Whether or not to allow well-formed HTML doctype declarations such as "<!DOCTYPE
	+html>" when sanitizing a document. This setting is ignored when sanitizing
	+fragments. The default value is <code>false</code>.</p>
	+
	+<h4>
	+<a name="user-content-attributes-hash" class="anchor" href="#attributes-hash"><span class="octicon octicon-link"></span></a>:attributes (Hash)</h4>
	+
	+<p>Attributes to allow on specific elements. Specify all element names and
	+attributes in lowercase.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'href'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'blockquote'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'cite'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'img'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'alt'</span><span class="p">,</span> <span class="s1">'src'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<p>If you'd like to allow certain attributes on all elements, use the symbol <code>:all</code>
	+instead of an element name.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Allow the class attribute on all elements.</span>
	+<span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="ss">:all</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'class'</span><span class="o">]</span><span class="p">,</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'href'</span><span class="p">,</span> <span class="s1">'title'</span><span class="o">]</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<p>To allow arbitrary HTML5 <code>data-*</code> attributes, use the symbol <code>:data</code> in place of
	+an attribute name.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="c1"># Allow arbitrary HTML5 data-* attributes on <div> elements.</span>
	+<span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'div'</span> <span class="o">=></span> <span class="o">[</span><span class="ss">:data</span><span class="o">]</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-elements-array" class="anchor" href="#elements-array"><span class="octicon octicon-link"></span></a>:elements (Array)</h4>
	+
	+<p>Array of HTML element names to allow. Specify all names in lowercase. Any
	+elements not in this array will be removed.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:elements</span> <span class="o">=></span> <span class="sx">%w[</span>
	+<span class="sx"> a abbr b blockquote br cite code dd dfn dl dt em i kbd li mark ol p pre</span>
	+<span class="sx"> q s samp small strike strong sub sup time u ul var</span>
	+<span class="sx">]</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-protocols-hash" class="anchor" href="#protocols-hash"><span class="octicon octicon-link"></span></a>:protocols (Hash)</h4>
	+
	+<p>URL protocols to allow in specific attributes. If an attribute is listed here
	+and contains a protocol other than those specified (or if it contains no
	+protocol at all), it will be removed.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:protocols</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'href'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'ftp'</span><span class="p">,</span> <span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="s1">'mailto'</span><span class="o">]</span><span class="p">},</span>
	+ <span class="s1">'img'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'src'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="o">]</span><span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<p>If you'd like to allow the use of relative URLs which don't have a protocol,
	+include the symbol <code>:relative</code> in the protocol array:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:protocols</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'a'</span> <span class="o">=></span> <span class="p">{</span><span class="s1">'href'</span> <span class="o">=></span> <span class="o">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="ss">:relative</span><span class="o">]</span><span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h4>
	+<a name="user-content-remove_contents-boolean-or-array" class="anchor" href="#remove_contents-boolean-or-array"><span class="octicon octicon-link"></span></a>:remove_contents (boolean or Array)</h4>
	+
	+<p>If set to <code>true</code>, Sanitize will remove the contents of any non-whitelisted
	+elements in addition to the elements themselves. By default, Sanitize leaves the
	+safe parts of an element's contents behind when the element is removed.</p>
	+
	+<p>If set to an array of element names, then only the contents of the specified
	+elements (when filtered) will be removed, and the contents of all other filtered
	+elements will be left behind.</p>
	+
	+<p>The default value is <code>false</code>.</p>
	+
	+<h4>
	+<a name="user-content-transformers" class="anchor" href="#transformers"><span class="octicon octicon-link"></span></a>:transformers</h4>
	+
	+<p>Custom transformer or array of custom transformers. See the Transformers section
	+below for details.</p>
	+
	+<h4>
	+<a name="user-content-whitespace_elements-hash" class="anchor" href="#whitespace_elements-hash"><span class="octicon octicon-link"></span></a>:whitespace_elements (Hash)</h4>
	+
	+<p>Hash of element names which, when removed, should have their contents surrounded
	+by whitespace to preserve readability.</p>
	+
	+<p>Each element name is a key pointing to another Hash, which provides the specific
	+whitespace that should be inserted <code>:before</code> and <code>:after</code> the removed element's
	+position. The <code>:after</code> value will only be inserted if the removed element has
	+children, in which case it will be inserted after those children.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="ss">:whitespace_elements</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'br'</span> <span class="o">=></span> <span class="p">{</span> <span class="ss">:before</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="ss">:after</span> <span class="o">=></span> <span class="s2">""</span> <span class="p">},</span>
	+ <span class="s1">'div'</span> <span class="o">=></span> <span class="p">{</span> <span class="ss">:before</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="ss">:after</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span> <span class="p">},</span>
	+ <span class="s1">'p'</span> <span class="o">=></span> <span class="p">{</span> <span class="ss">:before</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="ss">:after</span> <span class="o">=></span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span> <span class="p">}</span>
	+<span class="p">}</span>
	+</pre></div>
	+
	+<h2>
	+<a name="user-content-transformers-1" class="anchor" href="#transformers-1"><span class="octicon octicon-link"></span></a>Transformers</h2>
	+
	+<p>Transformers allow you to filter and modify nodes using your own custom logic,
	+on top of (or instead of) Sanitize's core filter. A transformer is any object
	+that responds to <code>call()</code> (such as a lambda or proc).</p>
	+
	+<p>To use one or more transformers, pass them to the <code>:transformers</code> config
	+setting. You may pass a single transformer or an array of transformers.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:transformers</span> <span class="o">=></span> <span class="o">[</span>
	+ <span class="n">transformer_one</span><span class="p">,</span>
	+ <span class="n">transformer_two</span>
	+<span class="o">]</span><span class="p">)</span>
	+</pre></div>
	+
	+<h3>
	+<a name="user-content-input" class="anchor" href="#input"><span class="octicon octicon-link"></span></a>Input</h3>
	+
	+<p>Each transformer's <code>call()</code> method will be called once for each node in the HTML
	+(including elements, text nodes, comments, etc.), and will receive as an
	+argument a Hash that contains the following items:</p>
	+
	+<ul class="task-list">
	+<li><p><strong>:config</strong> - The current Sanitize configuration Hash.</p></li>
	+<li><p><strong>:is_whitelisted</strong> - <code>true</code> if the current node has been whitelisted by a
	+previous transformer, <code>false</code> otherwise. It's generally bad form to remove
	+a node that a previous transformer has whitelisted.</p></li>
	+<li><p><strong>:node</strong> - A <code>Nokogiri::XML::Node</code> object representing an HTML node. The
	+node may be an element, a text node, a comment, a CDATA node, or a document
	+fragment. Use Nokogiri's inspection methods (<code>element?</code>, <code>text?</code>, etc.) to
	+selectively ignore node types you aren't interested in.</p></li>
	+<li><p><strong>:node_name</strong> - The name of the current HTML node, always lowercase (e.g.
	+"div" or "span"). For non-element nodes, the name will be something like
	+"text", "comment", "#cdata-section", "#document-fragment", etc.</p></li>
	+<li><p><strong>:node_whitelist</strong> - Set of <code>Nokogiri::XML::Node</code> objects in the current
	+document that have been whitelisted by previous transformers, if any. It's
	+generally bad form to remove a node that a previous transformer has
	+whitelisted.</p></li>
	+</ul><h3>
	+<a name="user-content-output" class="anchor" href="#output"><span class="octicon octicon-link"></span></a>Output</h3>
	+
	+<p>A transformer doesn't have to return anything, but may optionally return a Hash,
	+which may contain the following items:</p>
	+
	+<ul class="task-list">
	+<li>
	+<strong>:node_whitelist</strong> - Array or Set of specific Nokogiri::XML::Node objects
	+to add to the document's whitelist, bypassing the current Sanitize config.
	+These specific nodes and all their attributes will be whitelisted, but
	+their children will not be.</li>
	+</ul><p>If a transformer returns anything other than a Hash, the return value will be
	+ignored.</p>
	+
	+<h3>
	+<a name="user-content-processing" class="anchor" href="#processing"><span class="octicon octicon-link"></span></a>Processing</h3>
	+
	+<p>Each transformer has full access to the <code>Nokogiri::XML::Node</code> that's passed into
	+it and to the rest of the document via the node's <code>document()</code> method. Any
	+changes made to the current node or to the document will be reflected instantly
	+in the document and passed on to subsequently called transformers and to
	+Sanitize itself. A transformer may even call Sanitize internally to perform
	+custom sanitization if needed.</p>
	+
	+<p>Nodes are passed into transformers in the order in which they're traversed.
	+Sanitize performs top-down traversal, meaning that nodes are traversed in the
	+same order you'd read them in the HTML, starting at the top node, then its first
	+child, and so on.</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">html</span> <span class="o">=</span> <span class="sx">%[</span>
	+<span class="sx"> <header></span>
	+<span class="sx"> <span></span>
	+<span class="sx"> <strong>foo</strong></span>
	+<span class="sx"> </span></span>
	+<span class="sx"> <p>bar</p></span>
	+<span class="sx"> </header></span>
	+
	+<span class="sx"> <footer></footer></span>
	+<span class="sx">]</span>
	+
	+<span class="n">transformer</span> <span class="o">=</span> <span class="nb">lambda</span> <span class="k">do</span> <span class="o">\|</span><span class="n">env</span><span class="o">\|</span>
	+ <span class="nb">puts</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node_name</span><span class="o">]</span> <span class="k">if</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node</span><span class="o">].</span><span class="n">element?</span>
	+<span class="k">end</span>
	+
	+<span class="c1"># Prints "header", "span", "strong", "p", "footer".</span>
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:transformers</span> <span class="o">=></span> <span class="n">transformer</span><span class="p">)</span>
	+</pre></div>
	+
	+<p>Transformers have a tremendous amount of power, including the power to
	+completely bypass Sanitize's built-in filtering. Be careful! Your safety is in
	+your own hands.</p>
	+
	+<h3>
	+<a name="user-content-example-transformer-to-whitelist-youtube-video-embeds" class="anchor" href="#example-transformer-to-whitelist-youtube-video-embeds"><span class="octicon octicon-link"></span></a>Example: Transformer to whitelist YouTube video embeds</h3>
	+
	+<p>The following example demonstrates how to create a transformer that will safely
	+whitelist valid YouTube video embeds without having to blindly allow other kinds
	+of embedded content, which would be the case if you tried to do this by just
	+whitelisting all <code><iframe></code> elements:</p>
	+
	+<div class="highlight highlight-ruby"><pre><span class="n">youtube_transformer</span> <span class="o">=</span> <span class="nb">lambda</span> <span class="k">do</span> <span class="o">\|</span><span class="n">env</span><span class="o">\|</span>
	+ <span class="n">node</span> <span class="o">=</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node</span><span class="o">]</span>
	+ <span class="n">node_name</span> <span class="o">=</span> <span class="n">env</span><span class="o">[</span><span class="ss">:node_name</span><span class="o">]</span>
	+
	+ <span class="c1"># Don't continue if this node is already whitelisted or is not an element.</span>
	+ <span class="k">return</span> <span class="k">if</span> <span class="n">env</span><span class="o">[</span><span class="ss">:is_whitelisted</span><span class="o">]</span> <span class="o">\|\|</span> <span class="o">!</span><span class="n">node</span><span class="o">.</span><span class="n">element?</span>
	+
	+ <span class="c1"># Don't continue unless the node is an iframe.</span>
	+ <span class="k">return</span> <span class="k">unless</span> <span class="n">node_name</span> <span class="o">==</span> <span class="s1">'iframe'</span>
	+
	+ <span class="c1"># Verify that the video URL is actually a valid YouTube video URL.</span>
	+ <span class="k">return</span> <span class="k">unless</span> <span class="n">node</span><span class="o">[</span><span class="s1">'src'</span><span class="o">]</span> <span class="o">=~</span> <span class="sr">%r\|\A(?:https?:)?//(?:www\.)?youtube(?:-nocookie)?\.com/\|</span>
	+
	+ <span class="c1"># We're now certain that this is a YouTube embed, but we still need to run</span>
	+ <span class="c1"># it through a special Sanitize step to ensure that no unwanted elements or</span>
	+ <span class="c1"># attributes that don't belong in a YouTube embed can sneak in.</span>
	+ <span class="no">Sanitize</span><span class="o">.</span><span class="n">node!</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">{</span>
	+ <span class="ss">:elements</span> <span class="o">=></span> <span class="sx">%w[iframe]</span><span class="p">,</span>
	+
	+ <span class="ss">:attributes</span> <span class="o">=></span> <span class="p">{</span>
	+ <span class="s1">'iframe'</span> <span class="o">=></span> <span class="sx">%w[allowfullscreen frameborder height src width]</span>
	+ <span class="p">}</span>
	+ <span class="p">})</span>
	+
	+ <span class="c1"># Now that we're sure that this is a valid YouTube embed and that there are</span>
	+ <span class="c1"># no unwanted elements or attributes hidden inside it, we can tell Sanitize</span>
	+ <span class="c1"># to whitelist the current node.</span>
	+ <span class="p">{</span><span class="ss">:node_whitelist</span> <span class="o">=></span> <span class="o">[</span><span class="n">node</span><span class="o">]</span><span class="p">}</span>
	+<span class="k">end</span>
	+
	+<span class="n">html</span> <span class="o">=</span> <span class="sx">%[</span>
	+<span class="sx"><iframe width="420" height="315" src="//www.youtube.com/embed/dQw4w9WgXcQ"</span>
	+<span class="sx"> frameborder="0" allowfullscreen></iframe></span>
	+<span class="sx">]</span>
	+
	+<span class="no">Sanitize</span><span class="o">.</span><span class="n">fragment</span><span class="p">(</span><span class="n">html</span><span class="p">,</span> <span class="ss">:transformers</span> <span class="o">=></span> <span class="n">youtube_transformer</span><span class="p">)</span>
	+<span class="c1"># => '<iframe width="420" height="315" src="//www.youtube.com/embed/dQw4w9WgXcQ" frameborder="0" allowfullscreen=""></iframe>'</span>
	+</pre></div>
	+
	+<h2>
	+<a name="user-content-license" class="anchor" href="#license"><span class="octicon octicon-link"></span></a>License</h2>
	+
	+<p>Copyright (c) 2014 Ryan Grove (<a href="mailto:ryan@wonko.com">ryan@wonko.com</a>)</p>
	+
	+<p>Permission is hereby granted, free of charge, to any person obtaining a copy of
	+this software and associated documentation files (the 'Software'), to deal in
	+the Software without restriction, including without limitation the rights to
	+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
	+the Software, and to permit persons to whom the Software is furnished to do so,
	+subject to the following conditions:</p>
	+
	+<p>The above copyright notice and this permission notice shall be included in all
	+copies or substantial portions of the Software.</p>
	+
	+<p>THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
	+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
	+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
	+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</p></article>
	+ </div>
	diff --git a/lib/mix/tasks/fast_sanitize/html/fragment-small.html b/lib/mix/tasks/fast_sanitize/html/fragment-small.html
	new file mode 100644
	index 0000000..7898482
	--- /dev/null
	+++ b/lib/mix/tasks/fast_sanitize/html/fragment-small.html
	@@ -0,0 +1,13 @@
	+<p>Sanitize is a whitelist-based HTML sanitizer. Given a list of acceptable
	+elements and attributes, Sanitize will remove all unacceptable HTML from a
	+string.</p>
	+
	+<p>Using a simple configuration syntax, you can tell Sanitize to allow certain
	+elements, certain attributes within those elements, and even certain URL
	+protocols within attributes that contain URLs. Any HTML elements or attributes
	+that you don't explicitly allow will be removed.</p>
	+
	+<p>Sanitize is based on <a href="https://github.com/google/gumbo-parser">Google's Gumbo HTML5 parser</a>, which parses HTML
	+exactly the same way modern browsers do. As long as your whitelist config only
	+allows safe markup, even the most malformed or malicious input will be
	+transformed into safe output.</p>
	diff --git a/mix.exs b/mix.exs
	index eb9b317..dfbb2f0 100644
	--- a/mix.exs
	+++ b/mix.exs
	@@ -1,34 +1,36 @@
	defmodule FastSanitize.MixProject do
	use Mix.Project

	def project do
	[
	app: :fast_sanitize,
	version: "0.1.0",
	elixir: "~> 1.7",
	start_permanent: Mix.env() == :prod,
	deps: deps()
	]
	end

	# Run "mix help compile.app" to learn about applications.
	def application do
	[
	extra_applications: [:logger]
	]
	end

	# Run "mix help deps" to learn about dependencies.
	defp deps do
	[
	{:plug, "~> 1.8"},
	{:myhtmlex,
	git: "https://github.com/rinpatch/myhtmlex.git",
	ref: "d973dfb1b252b1c6e6eddddc18c0895aa977091c",
	submodules: true},
	{:credo, "~> 1.0.0", only: [:dev, :test], runtime: false},
	+ {:benchee, "~> 1.0", only: :dev},
	+ {:html_sanitize_ex, "~> 1.3.0-rc3", only: :dev},
	{:ex_doc, "~> 0.19", only: :dev, runtime: false},
	{:dialyxir, "~> 1.0.0-rc.5", only: [:dev], runtime: false}
	]
	end
	end
	diff --git a/mix.lock b/mix.lock
	index 5014d01..81a5ddc 100644
	--- a/mix.lock
	+++ b/mix.lock
	@@ -1,17 +1,21 @@
	%{
	+ "benchee": {:hex, :benchee, "1.0.1", "66b211f9bfd84bd97e6d1beaddf8fc2312aaabe192f776e8931cb0c16f53a521", [:mix], [{:deep_merge, "~> 1.0", [hex: :deep_merge, repo: "hexpm", optional: false]}], "hexpm"},
	"bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm"},
	"credo": {:hex, :credo, "1.0.5", "fdea745579f8845315fe6a3b43e2f9f8866839cfbc8562bb72778e9fdaa94214", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm"},
	+ "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm"},
	"dialyxir": {:hex, :dialyxir, "1.0.0-rc.6", "78e97d9c0ff1b5521dd68041193891aebebce52fc3b93463c0a6806874557d7d", [:mix], [{:erlex, "~> 0.2.1", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm"},
	"earmark": {:hex, :earmark, "1.3.2", "b840562ea3d67795ffbb5bd88940b1bed0ed9fa32834915125ea7d02e35888a5", [:mix], [], "hexpm"},
	"erlex": {:hex, :erlex, "0.2.1", "cee02918660807cbba9a7229cae9b42d1c6143b768c781fa6cee1eaf03ad860b", [:mix], [], "hexpm"},
	"ex_doc": {:hex, :ex_doc, "0.20.2", "1bd0dfb0304bade58beb77f20f21ee3558cc3c753743ae0ddbb0fd7ba2912331", [:mix], [{:earmark, "~> 1.3", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.10", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
	+ "html_sanitize_ex": {:hex, :html_sanitize_ex, "1.3.0", "f005ad692b717691203f940c686208aa3d8ffd9dd4bb3699240096a51fa9564e", [:mix], [{:mochiweb, "~> 2.15", [hex: :mochiweb, repo: "hexpm", optional: false]}], "hexpm"},
	"jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
	"makeup": {:hex, :makeup, "0.8.0", "9cf32aea71c7fe0a4b2e9246c2c4978f9070257e5c9ce6d4a28ec450a839b55f", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm"},
	"makeup_elixir": {:hex, :makeup_elixir, "0.13.0", "be7a477997dcac2e48a9d695ec730b2d22418292675c75aa2d34ba0909dcdeda", [:mix], [{:makeup, "~> 0.8", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm"},
	"mime": {:hex, :mime, "1.3.1", "30ce04ab3175b6ad0bdce0035cba77bba68b813d523d1aac73d9781b4d193cf8", [:mix], [], "hexpm"},
	- "myhtmlex": {:git, "https://github.com/rinpatch/myhtmlex.git", "d973dfb1b252b1c6e6eddddc18c0895aa977091c", [ref: "d973dfb1b252b1c6e6eddddc18c0895aa977091c"]},
	+ "mochiweb": {:hex, :mochiweb, "2.18.0", "eb55f1db3e6e960fac4e6db4e2db9ec3602cc9f30b86cd1481d56545c3145d2e", [:rebar3], [], "hexpm"},
	+ "myhtmlex": {:git, "https://github.com/rinpatch/myhtmlex.git", "d973dfb1b252b1c6e6eddddc18c0895aa977091c", [ref: "d973dfb1b252b1c6e6eddddc18c0895aa977091c", submodules: true]},
	"nimble_parsec": {:hex, :nimble_parsec, "0.5.0", "90e2eca3d0266e5c53f8fbe0079694740b9c91b6747f2b7e3c5d21966bba8300", [:mix], [], "hexpm"},
	"nodex": {:git, "https://github.com/rinpatch/nodex", "12ca7a2c5b5791f1e847d73ed646cf006d4c8ca8", [ref: "12ca7a2c5b5791f1e847d73ed646cf006d4c8ca8"]},
	"plug": {:hex, :plug, "1.8.0", "9d2685cb007fe5e28ed9ac27af2815bc262b7817a00929ac10f56f169f43b977", [:mix], [{:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm"},
	"plug_crypto": {:hex, :plug_crypto, "1.0.0", "18e49317d3fa343f24620ed22795ec29d4a5e602d52d1513ccea0b07d8ea7d4d", [:mix], [], "hexpm"},
	}

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