From e284cde56125fb2aabefb468b788bd853461ceef Mon Sep 17 00:00:00 2001 From: Pawel Kozlowski Date: Fri, 28 Dec 2012 21:32:49 +0100 Subject: [PATCH] chore(demo): add node-markdown to local modules to make CI running --- node_modules/node-markdown/LICENSE | 38 + node_modules/node-markdown/README.md | 57 + node_modules/node-markdown/examples/test.js | 12 + node_modules/node-markdown/lib/markdown.js | 125 ++ .../vendor/showdown/compressed/showdown.js | 419 +++++ .../vendor/showdown/example/showdown-gui.html | 720 ++++++++ .../vendor/showdown/example/showdown-gui.js | 349 ++++ .../lib/vendor/showdown/example/showdown.js | 1296 +++++++++++++ .../lib/vendor/showdown/license.txt | 34 + .../perlMarkdown/Markdown License.txt | 30 + .../showdown/perlMarkdown/Markdown-1.0.2b2.pl | 1509 +++++++++++++++ .../showdown/perlMarkdown/Markdown-1.0.2b7.pl | 1642 +++++++++++++++++ .../vendor/showdown/perlMarkdown/readme.txt | 13 + .../lib/vendor/showdown/readme.txt | 156 ++ .../lib/vendor/showdown/src/showdown.js | 1299 +++++++++++++ node_modules/node-markdown/package.json | 34 + 16 files changed, 7733 insertions(+) create mode 100644 node_modules/node-markdown/LICENSE create mode 100644 node_modules/node-markdown/README.md create mode 100644 node_modules/node-markdown/examples/test.js create mode 100644 node_modules/node-markdown/lib/markdown.js create mode 100644 node_modules/node-markdown/lib/vendor/showdown/compressed/showdown.js create mode 100644 node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.html create mode 100644 node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.js create mode 100644 node_modules/node-markdown/lib/vendor/showdown/example/showdown.js create mode 100644 node_modules/node-markdown/lib/vendor/showdown/license.txt create mode 100644 node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown License.txt create mode 100644 node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b2.pl create mode 100644 node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b7.pl create mode 100644 node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/readme.txt create mode 100644 node_modules/node-markdown/lib/vendor/showdown/readme.txt create mode 100644 node_modules/node-markdown/lib/vendor/showdown/src/showdown.js create mode 100644 node_modules/node-markdown/package.json diff --git a/node_modules/node-markdown/LICENSE b/node_modules/node-markdown/LICENSE new file mode 100644 index 0000000000..f4b71d89a3 --- /dev/null +++ b/node_modules/node-markdown/LICENSE @@ -0,0 +1,38 @@ +Copyright (c) 2010, Andris Reinman + +All rights reserved. + +Original Showdown copyright (c) 2007, John Fraser + +All rights reserved. + +Original Markdown copyright (c) 2004, John Gruber + +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +* Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +* Neither the name "Markdown" nor the names of its contributors may + be used to endorse or promote products derived from this software + without specific prior written permission. + +This software is provided by the copyright holders and contributors "as +is" and any express or implied warranties, including, but not limited +to, the implied warranties of merchantability and fitness for a +particular purpose are disclaimed. In no event shall the copyright owner +or contributors be liable for any direct, indirect, incidental, special, +exemplary, or consequential damages (including, but not limited to, +procurement of substitute goods or services; loss of use, data, or +profits; or business interruption) however caused and on any theory of +liability, whether in contract, strict liability, or tort (including +negligence or otherwise) arising in any way out of the use of this +software, even if advised of the possibility of such damage. diff --git a/node_modules/node-markdown/README.md b/node_modules/node-markdown/README.md new file mode 100644 index 0000000000..362dae6213 --- /dev/null +++ b/node_modules/node-markdown/README.md @@ -0,0 +1,57 @@ +node-markdown +============= + +**node-markdown** is based on [Showdown](http://attacklab.net/showdown/) parser and is meant to parse [Markdown](http://daringfireball.net/projects/markdown/) syntax into HTML code. + +Installation +------------ + +Use `npm` package manager + + npm install node-markdown + +Usage +----- + +Include Markdown parser + + var md = require("node-markdown").Markdown; + +Parse Markdown syntax into HTML + + var html = md("**markdown** string"); + +Allow only [default set](http://github.com/andris9/node-markdown/blob/master/lib/markdown.js#L38) of HTML tags to be used + + var html = md("**markdown** string", true); + +Allow only specified HTML tags to be used (default set of allowed attributes is used) + + var html = md("**markdown** string", true, "p|strong|span"); + +Allow specified HTML tags and specified attributes + + var html = md("**markdown** string", true, "p|strong|span", { + "a":"href", // 'href' for links + "*":"title|style" // 'title' and 'style' for all + }); + +Complete example + + var md_text = "**bold** *italic* [link](http://www.neti.ee) `code block`", + md_parser = require("node-markdown").Markdown; + + // simple + console.log(md_parser(md_text)); + + // limit HTML tags and attributes + console.log(md_parser(md_text, true, 'h1|p|span')); + + // limit HTML tags and keep attributes for allowed tags + var allowedTags = 'a|img'; + allowedAttributes = { + 'a':'href|style', + 'img': 'src', + '*': 'title' + } + console.log(md_parser(md_text, true, allowedTags, allowedAttributes)); diff --git a/node_modules/node-markdown/examples/test.js b/node_modules/node-markdown/examples/test.js new file mode 100644 index 0000000000..8b02d0110b --- /dev/null +++ b/node_modules/node-markdown/examples/test.js @@ -0,0 +1,12 @@ +var md = require("../lib/markdown.js").Markdown; + +var md_text = "**bold** *italic* [link](http://www.neti.ee) `code block`"; + +console.log("--all"); +console.log(md(md_text)); + +console.log("--only and ") +console.log(md(md_text, true, 'strong|code')); + +console.log("--only with _href_") +console.log(md(md_text, true, 'a', {a:'href'})); \ No newline at end of file diff --git a/node_modules/node-markdown/lib/markdown.js b/node_modules/node-markdown/lib/markdown.js new file mode 100644 index 0000000000..c8b2b7ad3e --- /dev/null +++ b/node_modules/node-markdown/lib/markdown.js @@ -0,0 +1,125 @@ +/* node-markdown is based on Showdown parser (see vendor/showdown) */ +/* usage: html = require("markdown").Markdown(markdown_string); */ + +// import Showdown parser +var Showdown = new (require("./vendor/showdown/src/showdown.js").Showdown.converter)(); + +/** + * Markdown(text, stripUnwanted, allowedtags, allowedAttribs) -> String + * - text (String): Markdown syntax to be parsed + * - stripUnwanted (Boolean): if TRUE strip all unwanted tags and attributes + * - allowedTags (String): allowed HTML tags in the form of "tag1|tag2|tag3" + * - allowedAttributes (Object): allowed attributes for specific tags + * format: {"tag1":"attrib1|attrib2|attrib3", "tag2":...} + * wildcard for all tags: "*" + * - forceProtocol (Boolean): Force src and href to http:// if they miss a protocol. + * + * Converts a markdown text into a HTML + **/ +this.Markdown = function(text, stripUnwanted, allowedTags, allowedAttributes, forceProtocol){ + var md = Showdown.makeHtml(text); + if(stripUnwanted) + return stripUnwantedHTML(md, allowedTags, allowedAttributes, forceProtocol); + else + return md; +} + +/** + * stripUnwantedHTML(html, allowedtags, allowedAttribs, forceProtocol) -> String + * - html (String): HTML code to be parsed + * - allowedTags (String): allowed HTML tags in the form of "tag1|tag2|tag3" + * - allowedAttributes (Object): allowed attributes for specific tags + * format: {"tag1":"attrib1|attrib2|attrib3", "tag2":...} + * wildcard for all tags: "*" + * - forceProtocol (Boolean): Force src and href to http:// if they miss a protocol. + * + * Removes unwanted tags and attributes from HTML string + **/ +var stripUnwantedHTML = function(html /*, allowedTags, allowedAttributes, forceProtocol */){ + var allowedTags = arguments[1] || + 'a|b|blockquote|code|del|dd|dl|dt|em|h1|h2|h3|'+ + 'i|img|li|ol|p|pre|sup|sub|strong|strike|ul|br|hr', + allowedAttributes = arguments[2] || { + 'img': 'src|width|height|alt', + 'a': 'href', + '*': 'title' + }, forceProtocol = arguments[3] || false, + + testAllowed = new RegExp('^('+allowedTags.toLowerCase()+')$'), + findTags = /<(\/?)\s*([\w:\-]+)([^>]*)>/g, + findAttribs = /(\s*)([\w:-]+)\s*=\s*(?:(?:(["'])([^\3]+?)(?:\3))|([^\s]+))/g; + + // convert all strings patterns into regexp objects (if not already converted) + for(var i in allowedAttributes){ + if(allowedAttributes.hasOwnProperty(i) && typeof allowedAttributes[i] === 'string'){ + allowedAttributes[i] = new RegExp('^('+ + allowedAttributes[i].toLowerCase()+')$'); + } + } + + // find and match html tags + return html.replace(findTags, function(original, lslash, tag, params){ + var tagAttr, wildcardAttr, + rslash = params.substr(-1)=="/" && "/" || ""; + + tag = tag.toLowerCase(); + + // tag is not allowed, return empty string + if(!tag.match(testAllowed)) + return ""; + + // tag is allowed + else{ + // regexp objects for a particular tag + tagAttr = tag in allowedAttributes && allowedAttributes[tag]; + wildcardAttr = "*" in allowedAttributes && allowedAttributes["*"]; + + // if no attribs are allowed + if(!tagAttr && !wildcardAttr) + return "<"+lslash+tag+rslash+">"; + + // remove trailing slash if any + params = params.trim(); + if(rslash){ + params = params.substr(0, params.length-1); 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+});
+_99=""+_99+"";
+_99=_99.replace(/">.+:/g,"\">");
+return _99;
+};
+var _a=function(_a3){
+_a3=_a3.replace(/~E(\d+)E/g,function(_a4,m1){
+var _a6=parseInt(m1);
+return String.fromCharCode(_a6);
+});
+return _a3;
+};
+var _72=function(_a7){
+_a7=_a7.replace(/^(\t|[ ]{1,4})/gm,"~0");
+_a7=_a7.replace(/~0/g,"");
+return _a7;
+};
+var _6=function(_a8){
+_a8=_a8.replace(/\t(?=\t)/g,"    ");
+_a8=_a8.replace(/\t/g,"~A~B");
+_a8=_a8.replace(/~B(.+?)~A/g,function(_a9,m1,m2){
+var _ac=m1;
+var _ad=4-_ac.length%4;
+for(var i=0;i<_ad;i++){
+_ac+=" ";
+}
+return _ac;
+});
+_a8=_a8.replace(/~A/g,"    ");
+_a8=_a8.replace(/~B/g,"");
+return _a8;
+};
+var _2e=function(_af,_b0,_b1){
+var _b2="(["+_b0.replace(/([\[\]\\])/g,"\\$1")+"])";
+if(_b1){
+_b2="\\\\"+_b2;
+}
+var _b3=new RegExp(_b2,"g");
+_af=_af.replace(_b3,_94);
+return _af;
+};
+var _94=function(_b4,m1){
+var _b6=m1.charCodeAt(0);
+return "~E"+_b6+"E";
+};
+};
+
diff --git a/node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.html b/node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.html
new file mode 100644
index 0000000000..c447221ee8
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.html
@@ -0,0 +1,720 @@
+
+
+
+	
+	Showdown - Markdown in Javascript
+	
+	
+	
+
+
+
+
+	
+	
+	
    
+		
    
+			Input
+		
    
+		 
+	
    
+
+	
    
+		
    
+			
+		
    
+	
+		
+	
+		
    
+	
+
+
+
+
+
+
+
+
+
+
+
+
+
+	
    
+	
+	
+	
+	
+	
+
\ No newline at end of file
diff --git a/node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.js b/node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.js
new file mode 100644
index 0000000000..5f3519f3f5
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/example/showdown-gui.js
@@ -0,0 +1,349 @@
+//
+// showdown-gui.js
+//
+// A sample application for Showdown, a javascript port
+// of Markdown.
+//
+// Copyright (c) 2007 John Fraser.
+//
+// Redistributable under a BSD-style open source license.
+// See license.txt for more information.
+//
+// The full source distribution is at:
+//
+//				A A L
+//				T C A
+//				T K B
+//
+//   
+//
+
+//
+// The Showdown converter itself is in showdown.js, which must be
+// included by the HTML before this file is.
+//
+// showdown-gui.js assumes the id and class definitions in
+// showdown.html.  It isn't dependent on the CSS, but it does
+// manually hide, display, and resize the individual panes --
+// overriding the stylesheets.
+//
+// This sample application only interacts with showdown.js in
+// two places:
+//
+//  In startGui():
+//
+//      converter = new Showdown.converter();
+//
+//  In convertText():
+//
+//      text = converter.makeHtml(text);
+//
+// The rest of this file is user interface stuff.
+//
+
+
+//
+// Register for onload
+//
+window.onload = startGui;
+
+
+//
+// Globals
+//
+
+var converter;
+var convertTextTimer,processingTime;
+var lastText,lastOutput,lastRoomLeft;
+var convertTextSetting, convertTextButton, paneSetting;
+var inputPane,previewPane,outputPane,syntaxPane;
+var maxDelay = 3000; // longest update pause (in ms)
+
+
+//
+//	Initialization
+//
+
+function startGui() {
+	// find elements
+	convertTextSetting = document.getElementById("convertTextSetting");
+	convertTextButton = document.getElementById("convertTextButton");
+	paneSetting = document.getElementById("paneSetting");
+
+	inputPane = document.getElementById("inputPane");
+	previewPane = document.getElementById("previewPane");
+	outputPane = document.getElementById("outputPane");
+	syntaxPane = document.getElementById("syntaxPane");
+
+	// set event handlers
+	convertTextSetting.onchange = onConvertTextSettingChanged;
+	convertTextButton.onclick = onConvertTextButtonClicked;
+	paneSetting.onchange = onPaneSettingChanged;
+	window.onresize = setPaneHeights;
+
+	// First, try registering for keyup events
+	// (There's no harm in calling onInput() repeatedly)
+	window.onkeyup = inputPane.onkeyup = onInput;
+
+	// In case we can't capture paste events, poll for them
+	var pollingFallback = window.setInterval(function(){
+		if(inputPane.value != lastText)
+			onInput();
+	},1000);
+
+	// Try registering for paste events
+	inputPane.onpaste = function() {
+		// It worked! Cancel paste polling.
+		if (pollingFallback!=undefined) {
+			window.clearInterval(pollingFallback);
+			pollingFallback = undefined;
+		}
+		onInput();
+	}
+
+	// Try registering for input events (the best solution)
+	if (inputPane.addEventListener) {
+		// Let's assume input also fires on paste.
+		// No need to cancel our keyup handlers;
+		// they're basically free.
+		inputPane.addEventListener("input",inputPane.onpaste,false);
+	}
+
+	// poll for changes in font size
+	// this is cheap; do it often
+	window.setInterval(setPaneHeights,250);
+
+	// start with blank page?
+	if (top.document.location.href.match(/\?blank=1$/))
+		inputPane.value = "";
+
+	// refresh panes to avoid a hiccup
+	onPaneSettingChanged();
+
+	// build the converter
+	converter = new Showdown.converter();
+
+	// do an initial conversion to avoid a hiccup
+	convertText();
+
+	// give the input pane focus
+	inputPane.focus();
+
+	// start the other panes at the top
+	// (our smart scrolling moved them to the bottom)
+	previewPane.scrollTop = 0;
+	outputPane.scrollTop = 0;
+}
+
+
+//
+//	Conversion
+//
+
+function convertText() {
+	// get input text
+	var text = inputPane.value;
+	
+	// if there's no change to input, cancel conversion
+	if (text && text == lastText) {
+		return;
+	} else {
+		lastText = text;
+	}
+
+	var startTime = new Date().getTime();
+
+	// Do the conversion
+	text = converter.makeHtml(text);
+
+	// display processing time
+	var endTime = new Date().getTime();	
+	processingTime = endTime - startTime;
+	document.getElementById("processingTime").innerHTML = processingTime+" ms";
+
+	// save proportional scroll positions
+	saveScrollPositions();
+
+	// update right pane
+	if (paneSetting.value == "outputPane") {
+		// the output pane is selected
+		outputPane.value = text;
+	} else if (paneSetting.value == "previewPane") {
+		// the preview pane is selected
+		previewPane.innerHTML = text;
+	}
+
+	lastOutput = text;
+
+	// restore proportional scroll positions
+	restoreScrollPositions();
+};
+
+
+//
+//	Event handlers
+//
+
+function onConvertTextSettingChanged() {
+	// If the user just enabled automatic
+	// updates, we'll do one now.
+	onInput();
+}
+
+function onConvertTextButtonClicked() {
+	// hack: force the converter to run
+	lastText = "";
+
+	convertText();
+	inputPane.focus();
+}
+
+function onPaneSettingChanged() {
+	previewPane.style.display = "none";
+	outputPane.style.display = "none";
+	syntaxPane.style.display = "none";
+
+	// now make the selected one visible
+	top[paneSetting.value].style.display = "block";
+
+	lastRoomLeft = 0;  // hack: force resize of new pane
+	setPaneHeights();
+
+	if (paneSetting.value == "outputPane") {
+		// Update output pane
+		outputPane.value = lastOutput;
+	} else if (paneSetting.value == "previewPane") {
+		// Update preview pane
+		previewPane.innerHTML = lastOutput;
+	}
+}
+
+function onInput() {
+// In "delayed" mode, we do the conversion at pauses in input.
+// The pause is equal to the last runtime, so that slow
+// updates happen less frequently.
+//
+// Use a timer to schedule updates.  Each keystroke
+// resets the timer.
+
+	// if we already have convertText scheduled, cancel it
+	if (convertTextTimer) {
+		window.clearTimeout(convertTextTimer);
+		convertTextTimer = undefined;
+	}
+
+	if (convertTextSetting.value != "manual") {
+		var timeUntilConvertText = 0;
+		if (convertTextSetting.value == "delayed") {
+			// make timer adaptive
+			timeUntilConvertText = processingTime;
+		}
+
+		if (timeUntilConvertText > maxDelay)
+			timeUntilConvertText = maxDelay;
+
+		// Schedule convertText().
+		// Even if we're updating every keystroke, use a timer at 0.
+		// This gives the browser time to handle other events.
+		convertTextTimer = window.setTimeout(convertText,timeUntilConvertText);
+	}
+}
+
+
+//
+// Smart scrollbar adjustment
+//
+// We need to make sure the user can't type off the bottom
+// of the preview and output pages.  We'll do this by saving
+// the proportional scroll positions before the update, and
+// restoring them afterwards.
+//
+
+var previewScrollPos;
+var outputScrollPos;
+
+function getScrollPos(element) {
+	// favor the bottom when the text first overflows the window
+	if (element.scrollHeight <= element.clientHeight)
+		return 1.0;
+	return element.scrollTop/(element.scrollHeight-element.clientHeight);
+}
+
+function setScrollPos(element,pos) {
+	element.scrollTop = (element.scrollHeight - element.clientHeight) * pos;
+}
+
+function saveScrollPositions() {
+	previewScrollPos = getScrollPos(previewPane);
+	outputScrollPos = getScrollPos(outputPane);
+}
+
+function restoreScrollPositions() {
+	// hack for IE: setting scrollTop ensures scrollHeight
+	// has been updated after a change in contents
+	previewPane.scrollTop = previewPane.scrollTop;
+
+	setScrollPos(previewPane,previewScrollPos);
+	setScrollPos(outputPane,outputScrollPos);
+}
+
+//
+// Textarea resizing
+//
+// Some browsers (i.e. IE) refuse to set textarea
+// percentage heights in standards mode. (But other units?
+// No problem.  Percentage widths? No problem.)
+//
+// So we'll do it in javascript.  If IE's behavior ever
+// changes, we should remove this crap and do 100% textarea
+// heights in CSS, because it makes resizing much smoother
+// on other browsers.
+//
+
+function getTop(element) {
+	var sum = element.offsetTop;
+	while(element = element.offsetParent)
+		sum += element.offsetTop;
+	return sum;
+}
+
+function getElementHeight(element) {
+	var height = element.clientHeight;
+	if (!height) height = element.scrollHeight;
+	return height;
+}
+
+function getWindowHeight(element) {
+	if (window.innerHeight)
+		return window.innerHeight;
+	else if (document.documentElement && document.documentElement.clientHeight)
+		return document.documentElement.clientHeight;
+	else if (document.body)
+		return document.body.clientHeight;
+}
+
+function setPaneHeights() {
+    var textarea  = inputPane;
+	var footer = document.getElementById("footer");
+
+	var windowHeight = getWindowHeight();
+	var footerHeight = getElementHeight(footer);
+	var textareaTop = getTop(textarea);
+
+	// figure out how much room the panes should fill
+	var roomLeft = windowHeight - footerHeight - textareaTop;
+
+	if (roomLeft < 0) roomLeft = 0;
+
+	// if it hasn't changed, return
+	if (roomLeft == lastRoomLeft) {
+		return;
+	}
+	lastRoomLeft = roomLeft;
+
+	// resize all panes
+	inputPane.style.height = roomLeft + "px";
+	previewPane.style.height = roomLeft + "px";
+	outputPane.style.height = roomLeft + "px";
+	syntaxPane.style.height = roomLeft + "px";
+}
\ No newline at end of file
diff --git a/node_modules/node-markdown/lib/vendor/showdown/example/showdown.js b/node_modules/node-markdown/lib/vendor/showdown/example/showdown.js
new file mode 100644
index 0000000000..a960309c11
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/example/showdown.js
@@ -0,0 +1,1296 @@
+//
+// showdown.js -- A javascript port of Markdown.
+//
+// Copyright (c) 2007 John Fraser.
+//
+// Original Markdown Copyright (c) 2004-2005 John Gruber
+//   
+//
+// Redistributable under a BSD-style open source license.
+// See license.txt for more information.
+//
+// The full source distribution is at:
+//
+//				A A L
+//				T C A
+//				T K B
+//
+//   
+//
+
+//
+// Wherever possible, Showdown is a straight, line-by-line port
+// of the Perl version of Markdown.
+//
+// This is not a normal parser design; it's basically just a
+// series of string substitutions.  It's hard to read and
+// maintain this way,  but keeping Showdown close to the original
+// design makes it easier to port new features.
+//
+// More importantly, Showdown behaves like markdown.pl in most
+// edge cases.  So web applications can do client-side preview
+// in Javascript, and then build identical HTML on the server.
+//
+// This port needs the new RegExp functionality of ECMA 262,
+// 3rd Edition (i.e. Javascript 1.5).  Most modern web browsers
+// should do fine.  Even with the new regular expression features,
+// We do a lot of work to emulate Perl's regex functionality.
+// The tricky changes in this file mostly have the "attacklab:"
+// label.  Major or self-explanatory changes don't.
+//
+// Smart diff tools like Araxis Merge will be able to match up
+// this file with markdown.pl in a useful way.  A little tweaking
+// helps: in a copy of markdown.pl, replace "#" with "//" and
+// replace "$text" with "text".  Be sure to ignore whitespace
+// and line endings.
+//
+
+
+//
+// Showdown usage:
+//
+//   var text = "Markdown *rocks*.";
+//
+//   var converter = new Showdown.converter();
+//   var html = converter.makeHtml(text);
+//
+//   alert(html);
+//
+// Note: move the sample code to the bottom of this
+// file before uncommenting it.
+//
+
+
+//
+// Showdown namespace
+//
+var Showdown = {};
+
+//
+// converter
+//
+// Wraps all "globals" so that the only thing
+// exposed is makeHtml().
+//
+Showdown.converter = function() {
+
+//
+// Globals:
+//
+
+// Global hashes, used by various utility routines
+var g_urls;
+var g_titles;
+var g_html_blocks;
+
+// Used to track when we're inside an ordered or unordered list
+// (see _ProcessListItems() for details):
+var g_list_level = 0;
+
+
+this.makeHtml = function(text) {
+//
+// Main function. The order in which other subs are called here is
+// essential. Link and image substitutions need to happen before
+// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the 
+// and  tags get encoded.
+//
+
+	// Clear the global hashes. If we don't clear these, you get conflicts
+	// from other articles when generating a page which contains more than
+	// one article (e.g. an index page that shows the N most recent
+	// articles):
+	g_urls = new Array();
+	g_titles = new Array();
+	g_html_blocks = new Array();
+
+	// attacklab: Replace ~ with ~T
+	// This lets us use tilde as an escape char to avoid md5 hashes
+	// The choice of character is arbitray; anything that isn't
+    // magic in Markdown will work.
+	text = text.replace(/~/g,"~T");
+
+	// attacklab: Replace $ with ~D
+	// RegExp interprets $ as a special character
+	// when it's in a replacement string
+	text = text.replace(/\$/g,"~D");
+
+	// Standardize line endings
+	text = text.replace(/\r\n/g,"\n"); // DOS to Unix
+	text = text.replace(/\r/g,"\n"); // Mac to Unix
+
+	// Make sure text begins and ends with a couple of newlines:
+	text = "\n\n" + text + "\n\n";
+
+	// Convert all tabs to spaces.
+	text = _Detab(text);
+
+	// Strip any lines consisting only of spaces and tabs.
+	// This makes subsequent regexen easier to write, because we can
+	// match consecutive blank lines with /\n+/ instead of something
+	// contorted like /[ \t]*\n+/ .
+	text = text.replace(/^[ \t]+$/mg,"");
+
+	// Turn block-level HTML blocks into hash entries
+	text = _HashHTMLBlocks(text);
+
+	// Strip link definitions, store in hashes.
+	text = _StripLinkDefinitions(text);
+
+	text = _RunBlockGamut(text);
+
+	text = _UnescapeSpecialChars(text);
+
+	// attacklab: Restore dollar signs
+	text = text.replace(/~D/g,"$$");
+
+	// attacklab: Restore tildes
+	text = text.replace(/~T/g,"~");
+
+	return text;
+}
+
+
+var _StripLinkDefinitions = function(text) {
+//
+// Strips link definitions from text, stores the URLs and titles in
+// hash references.
+//
+
+	// Link defs are in the form: ^[id]: url "optional title"
+
+	/*
+		var text = text.replace(/
+				^[ ]{0,3}\[(.+)\]:  // id = $1  attacklab: g_tab_width - 1
+				  [ \t]*
+				  \n?				// maybe *one* newline
+				  [ \t]*
+				?			// url = $2
+				  [ \t]*
+				  \n?				// maybe one newline
+				  [ \t]*
+				(?:
+				  (\n*)				// any lines skipped = $3 attacklab: lookbehind removed
+				  ["(]
+				  (.+?)				// title = $4
+				  [")]
+				  [ \t]*
+				)?					// title is optional
+				(?:\n+|$)
+			  /gm,
+			  function(){...});
+	*/
+	var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,
+		function (wholeMatch,m1,m2,m3,m4) {
+			m1 = m1.toLowerCase();
+			g_urls[m1] = _EncodeAmpsAndAngles(m2);  // Link IDs are case-insensitive
+			if (m3) {
+				// Oops, found blank lines, so it's not a title.
+				// Put back the parenthetical statement we stole.
+				return m3+m4;
+			} else if (m4) {
+				g_titles[m1] = m4.replace(/"/g,""");
+			}
+			
+			// Completely remove the definition from the text
+			return "";
+		}
+	);
+
+	return text;
+}
+
+
+var _HashHTMLBlocks = function(text) {
+	// attacklab: Double up blank lines to reduce lookaround
+	text = text.replace(/\n/g,"\n\n");
+
+	// Hashify HTML blocks:
+	// We only want to do this for block-level HTML tags, such as headers,
+	// lists, and tables. That's because we still want to wrap 
    s around
+	// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+	// phrase emphasis, and spans. The list of tags we're looking for is
+	// hard-coded:
+	var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
+	var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
+
+	// First, look for nested blocks, e.g.:
+	//   
    
+	//     
    
+	//     tags for inner block must be indented.
+	//     
    
+	//   
    
+	//
+	// The outermost tags must start at the left margin for this to match, and
+	// the inner nested divs must be indented.
+	// We need to do this before the next, more liberal match, because the next
+	// match will start at the first `
    ` and stop at the first `
    `.
+
+	// attacklab: This regex can be expensive when it fails.
+	/*
+		var text = text.replace(/
+		(						// save in $1
+			^					// start of line  (with /m)
+			<($block_tags_a)	// start tag = $2
+			\b					// word break
+								// attacklab: hack around khtml/pcre bug...
+			[^\r]*?\n			// any number of lines, minimally matching
+							// the matching end tag
+			[ \t]*				// trailing spaces/tabs
+			(?=\n+)				// followed by a newline
+		)						// attacklab: there are sentinel newlines at end of document
+		/gm,function(){...}};
+	*/
+	text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement);
+
+	//
+	// Now match more liberally, simply from `\n` to `\n`
+	//
+
+	/*
+		var text = text.replace(/
+		(						// save in $1
+			^					// start of line  (with /m)
+			<($block_tags_b)	// start tag = $2
+			\b					// word break
+								// attacklab: hack around khtml/pcre bug...
+			[^\r]*?				// any number of lines, minimally matching
+			.*				// the matching end tag
+			[ \t]*				// trailing spaces/tabs
+			(?=\n+)				// followed by a newline
+		)						// attacklab: there are sentinel newlines at end of document
+		/gm,function(){...}};
+	*/
+	text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement);
+
+	// Special case just for 
    . It was easier to make a special case than
+	// to make the other regex more complicated.  
+
+	/*
+		text = text.replace(/
+		(						// save in $1
+			\n\n				// Starting after a blank line
+			[ ]{0,3}
+			(<(hr)				// start tag = $2
+			\b					// word break
+			([^<>])*?			// 
+			\/?>)				// the matching end tag
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// Special case for standalone HTML comments:
+
+	/*
+		text = text.replace(/
+		(						// save in $1
+			\n\n				// Starting after a blank line
+			[ ]{0,3}			// attacklab: g_tab_width - 1
+			
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(\n\n[ ]{0,3}[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// PHP and ASP-style processor instructions ( and <%...%>)
+
+	/*
+		text = text.replace(/
+		(?:
+			\n\n				// Starting after a blank line
+		)
+		(						// save in $1
+			[ ]{0,3}			// attacklab: g_tab_width - 1
+			(?:
+				<([?%])			// $2
+				[^\r]*?
+				\2>
+			)
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// attacklab: Undo double lines (see comment at top of this function)
+	text = text.replace(/\n\n/g,"\n");
+	return text;
+}
+
+var hashElement = function(wholeMatch,m1) {
+	var blockText = m1;
+
+	// Undo double lines
+	blockText = blockText.replace(/\n\n/g,"\n");
+	blockText = blockText.replace(/^\n/,"");
+	
+	// strip trailing blank lines
+	blockText = blockText.replace(/\n+$/g,"");
+	
+	// Replace the element text with a marker ("~KxK" where x is its key)
+	blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n";
+	
+	return blockText;
+};
+
+var _RunBlockGamut = function(text) {
+//
+// These are all the transformations that form block-level
+// tags like paragraphs, headers, and list items.
+//
+	text = _DoHeaders(text);
+
+	// Do Horizontal Rules:
+	var key = hashBlock("
    ");
+	text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,key);
+	text = text.replace(/^[ ]{0,2}([ ]?\-[ ]?){3,}[ \t]*$/gm,key);
+	text = text.replace(/^[ ]{0,2}([ ]?\_[ ]?){3,}[ \t]*$/gm,key);
+
+	text = _DoLists(text);
+	text = _DoCodeBlocks(text);
+	text = _DoBlockQuotes(text);
+
+	// We already ran _HashHTMLBlocks() before, in Markdown(), but that
+	// was to escape raw HTML in the original Markdown source. This time,
+	// we're escaping the markup we've just created, so that we don't wrap
+	// 
     tags around block-level tags.
+	text = _HashHTMLBlocks(text);
+	text = _FormParagraphs(text);
+
+	return text;
+}
+
+
+var _RunSpanGamut = function(text) {
+//
+// These are all the transformations that occur *within* block-level
+// tags like paragraphs, headers, and list items.
+//
+
+	text = _DoCodeSpans(text);
+	text = _EscapeSpecialCharsWithinTagAttributes(text);
+	text = _EncodeBackslashEscapes(text);
+
+	// Process anchor and image tags. Images must come first,
+	// because ![foo][f] looks like an anchor.
+	text = _DoImages(text);
+	text = _DoAnchors(text);
+
+	// Make links out of things like ``
+	// Must come after _DoAnchors(), because you can use < and >
+	// delimiters in inline links like [this]().
+	text = _DoAutoLinks(text);
+	text = _EncodeAmpsAndAngles(text);
+	text = _DoItalicsAndBold(text);
+
+	// Do hard breaks:
+	text = text.replace(/  +\n/g," 
    \n");
+
+	return text;
+}
+
+var _EscapeSpecialCharsWithinTagAttributes = function(text) {
+//
+// Within tags -- meaning between < and > -- encode [\ ` * _] so they
+// don't conflict with their use in Markdown for code, italics and strong.
+//
+
+	// Build a regex to find HTML tags and comments.  See Friedl's 
+	// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
+	var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|)/gi;
+
+	text = text.replace(regex, function(wholeMatch) {
+		var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`");
+		tag = escapeCharacters(tag,"\\`*_");
+		return tag;
+	});
+
+	return text;
+}
+
+var _DoAnchors = function(text) {
+//
+// Turn Markdown link shortcuts into XHTML      tags.
+//
+	//
+	// First, handle reference-style links: [link text] [id]
+	//
+
+	/*
+		text = text.replace(/
+		(							// wrap whole match in $1
+			\[
+			(
+				(?:
+					\[[^\]]*\]		// allow brackets nested one level
+					|
+					[^\[]			// or anything else
+				)*
+			)
+			\]
+
+			[ ]?					// one optional space
+			(?:\n[ ]*)?				// one optional newline followed by spaces
+
+			\[
+			(.*?)					// id = $3
+			\]
+		)()()()()					// pad remaining backreferences
+		/g,_DoAnchors_callback);
+	*/
+	text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag);
+
+	//
+	// Next, inline-style links: [link text](url "optional title")
+	//
+
+	/*
+		text = text.replace(/
+			(						// wrap whole match in $1
+				\[
+				(
+					(?:
+						\[[^\]]*\]	// allow brackets nested one level
+					|
+					[^\[\]]			// or anything else
+				)
+			)
+			\]
+			\(						// literal paren
+			[ \t]*
+			()						// no id, so leave $3 empty
+			?				// href = $4
+			[ \t]*
+			(						// $5
+				(['"])				// quote char = $6
+				(.*?)				// Title = $7
+				\6					// matching quote
+				[ \t]*				// ignore any spaces/tabs between closing quote and )
+			)?						// title is optional
+			\)
+		)
+		/g,writeAnchorTag);
+	*/
+	text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag);
+
+	//
+	// Last, handle reference-style shortcuts: [link text]
+	// These must come last in case you've also got [link test][1]
+	// or [link test](/foo)
+	//
+
+	/*
+		text = text.replace(/
+		(		 					// wrap whole match in $1
+			\[
+			([^\[\]]+)				// link text = $2; can't contain '[' or ']'
+			\]
+		)()()()()()					// pad rest of backreferences
+		/g, writeAnchorTag);
+	*/
+	text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
+
+	return text;
+}
+
+var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+	if (m7 == undefined) m7 = "";
+	var whole_match = m1;
+	var link_text   = m2;
+	var link_id	 = m3.toLowerCase();
+	var url		= m4;
+	var title	= m7;
+	
+	if (url == "") {
+		if (link_id == "") {
+			// lower-case and turn embedded newlines into spaces
+			link_id = link_text.toLowerCase().replace(/ ?\n/g," ");
+		}
+		url = "#"+link_id;
+		
+		if (g_urls[link_id] != undefined) {
+			url = g_urls[link_id];
+			if (g_titles[link_id] != undefined) {
+				title = g_titles[link_id];
+			}
+		}
+		else {
+			if (whole_match.search(/\(\s*\)$/m)>-1) {
+				// Special case for explicit empty url
+				url = "";
+			} else {
+				return whole_match;
+			}
+		}
+	}	
+	
+	url = escapeCharacters(url,"*_");
+	var result = "";
+	
+	return result;
+}
+
+
+var _DoImages = function(text) {
+//
+// Turn Markdown image shortcuts into  tags.
+//
+
+	//
+	// First, handle reference-style labeled images: ![alt text][id]
+	//
+
+	/*
+		text = text.replace(/
+		(						// wrap whole match in $1
+			!\[
+			(.*?)				// alt text = $2
+			\]
+
+			[ ]?				// one optional space
+			(?:\n[ ]*)?			// one optional newline followed by spaces
+
+			\[
+			(.*?)				// id = $3
+			\]
+		)()()()()				// pad rest of backreferences
+		/g,writeImageTag);
+	*/
+	text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag);
+
+	//
+	// Next, handle inline images:  ![alt text](url "optional title")
+	// Don't forget: encode * and _
+
+	/*
+		text = text.replace(/
+		(						// wrap whole match in $1
+			!\[
+			(.*?)				// alt text = $2
+			\]
+			\s?					// One optional whitespace character
+			\(					// literal paren
+			[ \t]*
+			()					// no id, so leave $3 empty
+			?			// src url = $4
+			[ \t]*
+			(					// $5
+				(['"])			// quote char = $6
+				(.*?)			// title = $7
+				\6				// matching quote
+				[ \t]*
+			)?					// title is optional
+		\)
+		)
+		/g,writeImageTag);
+	*/
+	text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag);
+
+	return text;
+}
+
+var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+	var whole_match = m1;
+	var alt_text   = m2;
+	var link_id	 = m3.toLowerCase();
+	var url		= m4;
+	var title	= m7;
+
+	if (!title) title = "";
+	
+	if (url == "") {
+		if (link_id == "") {
+			// lower-case and turn embedded newlines into spaces
+			link_id = alt_text.toLowerCase().replace(/ ?\n/g," ");
+		}
+		url = "#"+link_id;
+		
+		if (g_urls[link_id] != undefined) {
+			url = g_urls[link_id];
+			if (g_titles[link_id] != undefined) {
+				title = g_titles[link_id];
+			}
+		}
+		else {
+			return whole_match;
+		}
+	}	
+	
+	alt_text = alt_text.replace(/"/g,""");
+	url = escapeCharacters(url,"*_");
+	var result = "\""" + _RunSpanGamut(m1) + "");});
+
+	text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
+		function(matchFound,m1){return hashBlock("
    " + _RunSpanGamut(m1) + "
    ");});
+
+	// atx-style headers:
+	//  # Header 1
+	//  ## Header 2
+	//  ## Header 2 with closing hashes ##
+	//  ...
+	//  ###### Header 6
+	//
+
+	/*
+		text = text.replace(/
+			^(\#{1,6})				// $1 = string of #'s
+			[ \t]*
+			(.+?)					// $2 = Header text
+			[ \t]*
+			\#*						// optional closing #'s (not counted)
+			\n+
+		/gm, function() {...});
+	*/
+
+	text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
+		function(wholeMatch,m1,m2) {
+			var h_level = m1.length;
+			return hashBlock("" + _RunSpanGamut(m2) + "");
+		});
+
+	return text;
+}
+
+// This declaration keeps Dojo compressor from outputting garbage:
+var _ProcessListItems;
+
+var _DoLists = function(text) {
+//
+// Form HTML ordered (numbered) and unordered (bulleted) lists.
+//
+
+	// attacklab: add sentinel to hack around khtml/safari bug:
+	// http://bugs.webkit.org/show_bug.cgi?id=11231
+	text += "~0";
+
+	// Re-usable pattern to match any entirel ul or ol list:
+
+	/*
+		var whole_list = /
+		(									// $1 = whole list
+			(								// $2
+				[ ]{0,3}					// attacklab: g_tab_width - 1
+				([*+-]|\d+[.])				// $3 = first list item marker
+				[ \t]+
+			)
+			[^\r]+?
+			(								// $4
+				~0							// sentinel for workaround; should be $
+			|
+				\n{2,}
+				(?=\S)
+				(?!							// Negative lookahead for another list item marker
+					[ \t]*
+					(?:[*+-]|\d+[.])[ \t]+
+				)
+			)
+		)/g
+	*/
+	var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
+
+	if (g_list_level) {
+		text = text.replace(whole_list,function(wholeMatch,m1,m2) {
+			var list = m1;
+			var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol";
+
+			// Turn double returns into triple returns, so that we can make a
+			// paragraph for the last item in a list, if necessary:
+			list = list.replace(/\n{2,}/g,"\n\n\n");;
+			var result = _ProcessListItems(list);
+	
+			// Trim any trailing whitespace, to put the closing ``
+			// up on the preceding line, to get it past the current stupid
+			// HTML block parser. This is a hack to work around the terrible
+			// hack that is the HTML block parser.
+			result = result.replace(/\s+$/,"");
+			result = "<"+list_type+">" + result + "\n";
+			return result;
+		});
+	} else {
+		whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
+		text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) {
+			var runup = m1;
+			var list = m2;
+
+			var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol";
+			// Turn double returns into triple returns, so that we can make a
+			// paragraph for the last item in a list, if necessary:
+			var list = list.replace(/\n{2,}/g,"\n\n\n");;
+			var result = _ProcessListItems(list);
+			result = runup + "<"+list_type+">\n" + result + "\n";	
+			return result;
+		});
+	}
+
+	// attacklab: strip sentinel
+	text = text.replace(/~0/,"");
+
+	return text;
+}
+
+_ProcessListItems = function(list_str) {
+//
+//  Process the contents of a single ordered or unordered list, splitting it
+//  into individual list items.
+//
+	// The $g_list_level global keeps track of when we're inside a list.
+	// Each time we enter a list, we increment it; when we leave a list,
+	// we decrement. If it's zero, we're not in a list anymore.
+	//
+	// We do this because when we're not inside a list, we want to treat
+	// something like this:
+	//
+	//    I recommend upgrading to version
+	//    8. Oops, now this line is treated
+	//    as a sub-list.
+	//
+	// As a single paragraph, despite the fact that the second line starts
+	// with a digit-period-space sequence.
+	//
+	// Whereas when we're inside a list (or sub-list), that line will be
+	// treated as the start of a sub-list. What a kludge, huh? This is
+	// an aspect of Markdown's syntax that's hard to parse perfectly
+	// without resorting to mind-reading. Perhaps the solution is to
+	// change the syntax rules such that sub-lists must start with a
+	// starting cardinal number; e.g. "1." or "a.".
+
+	g_list_level++;
+
+	// trim trailing blank lines:
+	list_str = list_str.replace(/\n{2,}$/,"\n");
+
+	// attacklab: add sentinel to emulate \z
+	list_str += "~0";
+
+	/*
+		list_str = list_str.replace(/
+			(\n)?							// leading line = $1
+			(^[ \t]*)						// leading whitespace = $2
+			([*+-]|\d+[.]) [ \t]+			// list marker = $3
+			([^\r]+?						// list item text   = $4
+			(\n{1,2}))
+			(?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+))
+		/gm, function(){...});
+	*/
+	list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,
+		function(wholeMatch,m1,m2,m3,m4){
+			var item = m4;
+			var leading_line = m1;
+			var leading_space = m2;
+
+			if (leading_line || (item.search(/\n{2,}/)>-1)) {
+				item = _RunBlockGamut(_Outdent(item));
+			}
+			else {
+				// Recursion for sub-lists:
+				item = _DoLists(_Outdent(item));
+				item = item.replace(/\n$/,""); // chomp(item)
+				item = _RunSpanGamut(item);
+			}
+
+			return  "
  • " + item + "
    • \n";
+		}
+	);
+
+	// attacklab: strip sentinel
+	list_str = list_str.replace(/~0/g,"");
+
+	g_list_level--;
+	return list_str;
+}
+
+
+var _DoCodeBlocks = function(text) {
+//
+//  Process Markdown `
    ` blocks.
+//  
+
+	/*
+		text = text.replace(text,
+			/(?:\n\n|^)
+			(								// $1 = the code block -- one or more lines, starting with a space/tab
+				(?:
+					(?:[ ]{4}|\t)			// Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
+					.*\n+
+				)+
+			)
+			(\n*[ ]{0,3}[^ \t\n]|(?=~0))	// attacklab: g_tab_width
+		/g,function(){...});
+	*/
+
+	// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
+	text += "~0";
+	
+	text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
+		function(wholeMatch,m1,m2) {
+			var codeblock = m1;
+			var nextChar = m2;
+		
+			codeblock = _EncodeCode( _Outdent(codeblock));
+			codeblock = _Detab(codeblock);
+			codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
+			codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
+
+			codeblock = "
    " + codeblock + "\n
    ";
+
+			return hashBlock(codeblock) + nextChar;
+		}
+	);
+
+	// attacklab: strip sentinel
+	text = text.replace(/~0/,"");
+
+	return text;
+}
+
+var hashBlock = function(text) {
+	text = text.replace(/(^\n+|\n+$)/g,"");
+	return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n";
+}
+
+
+var _DoCodeSpans = function(text) {
+//
+//   *  Backtick quotes are used for  spans.
+// 
+//   *  You can use multiple backticks as the delimiters if you want to
+//	 include literal backticks in the code span. So, this input:
+//	 
+//		 Just type ``foo `bar` baz`` at the prompt.
+//	 
+//	   Will translate to:
+//	 
+//		 
    Just type foo `bar` baz at the prompt.
    
+//	 
+//	There's no arbitrary limit to the number of backticks you
+//	can use as delimters. If you need three consecutive backticks
+//	in your code, use four for delimiters, etc.
+//
+//  *  You can use spaces to get literal backticks at the edges:
+//	 
+//		 ... type `` `bar` `` ...
+//	 
+//	   Turns to:
+//	 
+//		 ... type `bar` ...
+//
+
+	/*
+		text = text.replace(/
+			(^|[^\\])					// Character before opening ` can't be a backslash
+			(`+)						// $2 = Opening run of `
+			(							// $3 = The code block
+				[^\r]*?
+				[^`]					// attacklab: work around lack of lookbehind
+			)
+			\2							// Matching closer
+			(?!`)
+		/gm, function(){...});
+	*/
+
+	text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
+		function(wholeMatch,m1,m2,m3,m4) {
+			var c = m3;
+			c = c.replace(/^([ \t]*)/g,"");	// leading whitespace
+			c = c.replace(/[ \t]*$/g,"");	// trailing whitespace
+			c = _EncodeCode(c);
+			return m1+""+c+"";
+		});
+
+	return text;
+}
+
+
+var _EncodeCode = function(text) {
+//
+// Encode/escape certain characters inside Markdown code runs.
+// The point is that in code, these characters are literals,
+// and lose their special Markdown meanings.
+//
+	// Encode all ampersands; HTML entities are not
+	// entities within a Markdown code span.
+	text = text.replace(/&/g,"&");
+
+	// Do the angle bracket song and dance:
+	text = text.replace(//g,">");
+
+	// Now, escape characters that are magic in Markdown:
+	text = escapeCharacters(text,"\*_{}[]\\",false);
+
+// jj the line above breaks this:
+//---
+
+//* Item
+
+//   1. Subitem
+
+//            special char: *
+//---
+
+	return text;
+}
+
+
+var _DoItalicsAndBold = function(text) {
+
+	//  must go first:
+	text = text.replace(/(\*\*|__)(?=\S)([^\r]*?\S[*_]*)\1/g,
+		"$2");
+
+	text = text.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g,
+		"$2");
+
+	return text;
+}
+
+
+var _DoBlockQuotes = function(text) {
+
+	/*
+		text = text.replace(/
+		(								// Wrap whole match in $1
+			(
+				^[ \t]*>[ \t]?			// '>' at the start of a line
+				.+\n					// rest of the first line
+				(.+\n)*					// subsequent consecutive lines
+				\n*						// blanks
+			)+
+		)
+		/gm, function(){...});
+	*/
+
+	text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
+		function(wholeMatch,m1) {
+			var bq = m1;
+
+			// attacklab: hack around Konqueror 3.5.4 bug:
+			// "----------bug".replace(/^-/g,"") == "bug"
+
+			bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0");	// trim one level of quoting
+
+			// attacklab: clean up hack
+			bq = bq.replace(/~0/g,"");
+
+			bq = bq.replace(/^[ \t]+$/gm,"");		// trim whitespace-only lines
+			bq = _RunBlockGamut(bq);				// recurse
+			
+			bq = bq.replace(/(^|\n)/g,"$1  ");
+			// These leading spaces screw with 
     content, so we need to fix that:
+			bq = bq.replace(
+					/(\s*
    [^\r]+?<\/pre>)/gm,
+				function(wholeMatch,m1) {
+					var pre = m1;
+					// attacklab: hack around Konqueror 3.5.4 bug:
+					pre = pre.replace(/^  /mg,"~0");
+					pre = pre.replace(/~0/g,"");
+					return pre;
+				});
+			
+			return hashBlock("
    \n" + bq + "\n
    ");
+		});
+	return text;
+}
+
+
+var _FormParagraphs = function(text) {
+//
+//  Params:
+//    $text - string to process with html 
     tags
+//
+
+	// Strip leading and trailing lines:
+	text = text.replace(/^\n+/g,"");
+	text = text.replace(/\n+$/g,"");
+
+	var grafs = text.split(/\n{2,}/g);
+	var grafsOut = new Array();
+
+	//
+	// Wrap 
     tags.
+	//
+	var end = grafs.length;
+	for (var i=0; i= 0) {
+			grafsOut.push(str);
+		}
+		else if (str.search(/\S/) >= 0) {
+			str = _RunSpanGamut(str);
+			str = str.replace(/^([ \t]*)/g,"
    ");
+			str += "
    "
+			grafsOut.push(str);
+		}
+
+	}
+
+	//
+	// Unhashify HTML blocks
+	//
+	end = grafsOut.length;
+	for (var i=0; i= 0) {
+			var blockText = g_html_blocks[RegExp.$1];
+			blockText = blockText.replace(/\$/g,"$$$$"); // Escape any dollar signs
+			grafsOut[i] = grafsOut[i].replace(/~K\d+K/,blockText);
+		}
+	}
+
+	return grafsOut.join("\n\n");
+}
+
+
+var _EncodeAmpsAndAngles = function(text) {
+// Smart processing for ampersands and angle brackets that need to be encoded.
+	
+	// Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
+	//   http://bumppo.net/projects/amputator/
+	text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g,"&");
+	
+	// Encode naked <'s
+	text = text.replace(/<(?![a-z\/?\$!])/gi,"<");
+	
+	return text;
+}
+
+
+var _EncodeBackslashEscapes = function(text) {
+//
+//   Parameter:  String.
+//   Returns:	The string, with after processing the following backslash
+//			   escape sequences.
+//
+
+	// attacklab: The polite way to do this is with the new
+	// escapeCharacters() function:
+	//
+	// 	text = escapeCharacters(text,"\\",true);
+	// 	text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
+	//
+	// ...but we're sidestepping its use of the (slow) RegExp constructor
+	// as an optimization for Firefox.  This function gets called a LOT.
+
+	text = text.replace(/\\(\\)/g,escapeCharacters_callback);
+	text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g,escapeCharacters_callback);
+	return text;
+}
+
+
+var _DoAutoLinks = function(text) {
+
+	text = text.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi,"    $1");
+
+	// Email addresses: 
+
+	/*
+		text = text.replace(/
+			<
+			(?:mailto:)?
+			(
+				[-.\w]+
+				\@
+				[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
+			)
+			>
+		/gi, _DoAutoLinks_callback());
+	*/
+	text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
+		function(wholeMatch,m1) {
+			return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
+		}
+	);
+
+	return text;
+}
+
+
+var _EncodeEmailAddress = function(addr) {
+//
+//  Input: an email address, e.g. "foo@example.com"
+//
+//  Output: the email address as a mailto link, with each character
+//	of the address encoded as either a decimal or hex entity, in
+//	the hopes of foiling most address harvesting spam bots. E.g.:
+//
+//	foo
+//	   @example.com
+//
+//  Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
+//  mailing list: 
+//
+
+	// attacklab: why can't javascript speak hex?
+	function char2hex(ch) {
+		var hexDigits = '0123456789ABCDEF';
+		var dec = ch.charCodeAt(0);
+		return(hexDigits.charAt(dec>>4) + hexDigits.charAt(dec&15));
+	}
+
+	var encode = [
+		function(ch){return "&#"+ch.charCodeAt(0)+";";},
+		function(ch){return "&#x"+char2hex(ch)+";";},
+		function(ch){return ch;}
+	];
+
+	addr = "mailto:" + addr;
+
+	addr = addr.replace(/./g, function(ch) {
+		if (ch == "@") {
+		   	// this *must* be encoded. I insist.
+			ch = encode[Math.floor(Math.random()*2)](ch);
+		} else if (ch !=":") {
+			// leave ':' alone (to spot mailto: later)
+			var r = Math.random();
+			// roughly 10% raw, 45% hex, 45% dec
+			ch =  (
+					r > .9  ?	encode[2](ch)   :
+					r > .45 ?	encode[1](ch)   :
+								encode[0](ch)
+				);
+		}
+		return ch;
+	});
+
+	addr = "" + addr + "";
+	addr = addr.replace(/">.+:/g,"\">"); // strip the mailto: from the visible part
+
+	return addr;
+}
+
+
+var _UnescapeSpecialChars = function(text) {
+//
+// Swap back in all the special characters we've hidden.
+//
+	text = text.replace(/~E(\d+)E/g,
+		function(wholeMatch,m1) {
+			var charCodeToReplace = parseInt(m1);
+			return String.fromCharCode(charCodeToReplace);
+		}
+	);
+	return text;
+}
+
+
+var _Outdent = function(text) {
+//
+// Remove one level of line-leading tabs or spaces
+//
+
+	// attacklab: hack around Konqueror 3.5.4 bug:
+	// "----------bug".replace(/^-/g,"") == "bug"
+
+	text = text.replace(/^(\t|[ ]{1,4})/gm,"~0"); // attacklab: g_tab_width
+
+	// attacklab: clean up hack
+	text = text.replace(/~0/g,"")
+
+	return text;
+}
+
+var _Detab = function(text) {
+// attacklab: Detab's completely rewritten for speed.
+// In perl we could fix it by anchoring the regexp with \G.
+// In javascript we're less fortunate.
+
+	// expand first n-1 tabs
+	text = text.replace(/\t(?=\t)/g,"    "); // attacklab: g_tab_width
+
+	// replace the nth with two sentinels
+	text = text.replace(/\t/g,"~A~B");
+
+	// use the sentinel to anchor our regex so it doesn't explode
+	text = text.replace(/~B(.+?)~A/g,
+		function(wholeMatch,m1,m2) {
+			var leadingText = m1;
+			var numSpaces = 4 - leadingText.length % 4;  // attacklab: g_tab_width
+
+			// there *must* be a better way to do this:
+			for (var i=0; i  
+All rights reserved.
+
+Original Markdown copyright (c) 2004, John Gruber  
+  
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name "Markdown" nor the names of its contributors may
+  be used to endorse or promote products derived from this software
+  without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
diff --git a/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown License.txt b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown License.txt
new file mode 100644
index 0000000000..6d76506505
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown License.txt	
@@ -0,0 +1,30 @@
+Copyright (c) 2004, John Gruber  
+  
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name "Markdown" nor the names of its contributors may
+  be used to endorse or promote products derived from this software
+  without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
diff --git a/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b2.pl b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b2.pl
new file mode 100644
index 0000000000..5c78edd47e
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b2.pl
@@ -0,0 +1,1509 @@
+#!/usr/bin/perl
+
+#
+# Markdown -- A text-to-HTML conversion tool for web writers
+#
+# Copyright (c) 2004-2005 John Gruber
+# 
+#
+
+
+package Markdown;
+require 5.006_000;
+use strict;
+use warnings;
+
+use Digest::MD5 qw(md5_hex);
+use vars qw($VERSION);
+$VERSION = '1.0.2b2';
+# Sat 26 Mar 2005
+
+## Disabled; causes problems under Perl 5.6.1:
+# use utf8;
+# binmode( STDOUT, ":utf8" );  # c.f.: http://acis.openlib.org/dev/perl-unicode-struggle.html
+
+
+#
+# Global default settings:
+#
+my $g_empty_element_suffix = " />";     # Change to ">" for HTML output
+my $g_tab_width = 4;
+
+
+#
+# Globals:
+#
+
+# Regex to match balanced [brackets]. See Friedl's
+# "Mastering Regular Expressions", 2nd Ed., pp. 328-331.
+my $g_nested_brackets;
+$g_nested_brackets = qr{
+  (?>                 # Atomic matching
+     [^\[\]]+              # Anything other than brackets
+   | 
+     \[
+     (??{ $g_nested_brackets })    # Recursive set of nested brackets
+     \]
+  )*
+}x;
+
+
+# Table of hash values for escaped characters:
+my %g_escape_table;
+foreach my $char (split //, '\\`*_{}[]()>#+-.!') {
+  $g_escape_table{$char} = md5_hex($char);
+}
+
+
+# Global hashes, used by various utility routines
+my %g_urls;
+my %g_titles;
+my %g_html_blocks;
+
+# Used to track when we're inside an ordered or unordered list
+# (see _ProcessListItems() for details):
+my $g_list_level = 0;
+
+
+#### Blosxom plug-in interface ##########################################
+
+# Set $g_blosxom_use_meta to 1 to use Blosxom's meta plug-in to determine
+# which posts Markdown should process, using a "meta-markup: markdown"
+# header. If it's set to 0 (the default), Markdown will process all
+# entries.
+my $g_blosxom_use_meta = 0;
+
+sub start { 1; }
+sub story {
+  my($pkg, $path, $filename, $story_ref, $title_ref, $body_ref) = @_;
+
+  if ( (! $g_blosxom_use_meta) or
+       (defined($meta::markup) and ($meta::markup =~ /^\s*markdown\s*$/i))
+       ){
+      $$body_ref  = Markdown($$body_ref);
+     }
+     1;
+}
+
+
+#### Movable Type plug-in interface #####################################
+eval {require MT};  # Test to see if we're running in MT.
+unless ($@) {
+    require MT;
+    import  MT;
+    require MT::Template::Context;
+    import  MT::Template::Context;
+
+  eval {require MT::Plugin};  # Test to see if we're running >= MT 3.0.
+  unless ($@) {
+    require MT::Plugin;
+    import  MT::Plugin;
+    my $plugin = new MT::Plugin({
+      name => "Markdown",
+      description => "A plain-text-to-HTML formatting plugin. (Version: $VERSION)",
+      doc_link => 'http://daringfireball.net/projects/markdown/'
+    });
+    MT->add_plugin( $plugin );
+  }
+
+  MT::Template::Context->add_container_tag(MarkdownOptions => sub {
+    my $ctx   = shift;
+    my $args = shift;
+    my $builder = $ctx->stash('builder');
+    my $tokens = $ctx->stash('tokens');
+
+    if (defined ($args->{'output'}) ) {
+      $ctx->stash('markdown_output', lc $args->{'output'});
+    }
+
+    defined (my $str = $builder->build($ctx, $tokens) )
+      or return $ctx->error($builder->errstr);
+    $str;    # return value
+  });
+
+  MT->add_text_filter('markdown' => {
+    label     => 'Markdown',
+    docs      => 'http://daringfireball.net/projects/markdown/',
+    on_format => sub {
+      my $text = shift;
+      my $ctx  = shift;
+      my $raw  = 0;
+        if (defined $ctx) {
+          my $output = $ctx->stash('markdown_output'); 
+        if (defined $output  &&  $output =~ m/^html/i) {
+          $g_empty_element_suffix = ">";
+          $ctx->stash('markdown_output', '');
+        }
+        elsif (defined $output  &&  $output eq 'raw') {
+          $raw = 1;
+          $ctx->stash('markdown_output', '');
+        }
+        else {
+          $raw = 0;
+          $g_empty_element_suffix = " />";
+        }
+      }
+      $text = $raw ? $text : Markdown($text);
+      $text;
+    },
+  });
+
+  # If SmartyPants is loaded, add a combo Markdown/SmartyPants text filter:
+  my $smartypants;
+
+  {
+    no warnings "once";
+    $smartypants = $MT::Template::Context::Global_filters{'smarty_pants'};
+  }
+
+  if ($smartypants) {
+    MT->add_text_filter('markdown_with_smartypants' => {
+      label     => 'Markdown With SmartyPants',
+      docs      => 'http://daringfireball.net/projects/markdown/',
+      on_format => sub {
+        my $text = shift;
+        my $ctx  = shift;
+        if (defined $ctx) {
+          my $output = $ctx->stash('markdown_output'); 
+          if (defined $output  &&  $output eq 'html') {
+            $g_empty_element_suffix = ">";
+          }
+          else {
+            $g_empty_element_suffix = " />";
+          }
+        }
+        $text = Markdown($text);
+        $text = $smartypants->($text, '1');
+      },
+    });
+  }
+}
+else {
+#### BBEdit/command-line text filter interface ##########################
+# Needs to be hidden from MT (and Blosxom when running in static mode).
+
+    # We're only using $blosxom::version once; tell Perl not to warn us:
+  no warnings 'once';
+    unless ( defined($blosxom::version) ) {
+    use warnings;
+
+    #### Check for command-line switches: #################
+    my %cli_opts;
+    use Getopt::Long;
+    Getopt::Long::Configure('pass_through');
+    GetOptions(\%cli_opts,
+      'version',
+      'shortversion',
+      'html4tags',
+    );
+    if ($cli_opts{'version'}) {    # Version info
+      print "\nThis is Markdown, version $VERSION.\n";
+      print "Copyright 2004 John Gruber\n";
+      print "http://daringfireball.net/projects/markdown/\n\n";
+      exit 0;
+    }
+    if ($cli_opts{'shortversion'}) {    # Just the version number string.
+      print $VERSION;
+      exit 0;
+    }
+    if ($cli_opts{'html4tags'}) {      # Use HTML tag style instead of XHTML
+      $g_empty_element_suffix = ">";
+    }
+
+
+    #### Process incoming text: ###########################
+    my $text;
+    {
+      local $/;               # Slurp the whole file
+      $text = <>;
+    }
+        print Markdown($text);
+    }
+}
+
+
+
+sub Markdown {
+#
+# Main function. The order in which other subs are called here is
+# essential. Link and image substitutions need to happen before
+# _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the 
+# and  tags get encoded.
+#
+  my $text = shift;
+
+  # Clear the global hashes. If we don't clear these, you get conflicts
+  # from other articles when generating a page which contains more than
+  # one article (e.g. an index page that shows the N most recent
+  # articles):
+  %g_urls = ();
+  %g_titles = ();
+  %g_html_blocks = ();
+
+
+  # Standardize line endings:
+  $text =~ s{\r\n}{\n}g;   # DOS to Unix
+  $text =~ s{\r}{\n}g;   # Mac to Unix
+
+  # Make sure $text ends with a couple of newlines:
+  $text .= "\n\n";
+
+  # Convert all tabs to spaces.
+  $text = _Detab($text);
+
+  # Strip any lines consisting only of spaces and tabs.
+  # This makes subsequent regexen easier to write, because we can
+  # match consecutive blank lines with /\n+/ instead of something
+  # contorted like /[ \t]*\n+/ .
+  $text =~ s/^[ \t]+$//mg;
+
+  # Turn block-level HTML blocks into hash entries
+  $text = _HashHTMLBlocks($text);
+
+  # Strip link definitions, store in hashes.
+  $text = _StripLinkDefinitions($text);
+
+  $text = _RunBlockGamut($text);
+
+  $text = _UnescapeSpecialChars($text);
+
+  return $text . "\n";
+}
+
+
+sub _StripLinkDefinitions {
+#
+# Strips link definitions from text, stores the URLs and titles in
+# hash references.
+#
+  my $text = shift;
+  my $less_than_tab = $g_tab_width - 1;
+
+  # Link defs are in the form: ^[id]: url "optional title"
+  while ($text =~ s{
+            ^[ ]{0,$less_than_tab}\[(.+)\]:  # id = $1
+              [ \t]*
+              \n?        # maybe *one* newline
+              [ \t]*
+            ?      # url = $2
+              [ \t]*
+              \n?        # maybe one newline
+              [ \t]*
+            (?:
+              (?<=\s)      # lookbehind for whitespace
+              ["(]
+              (.+?)      # title = $3
+              [")]
+              [ \t]*
+            )?  # title is optional
+            (?:\n+|\Z)
+          }
+          {}mx) {
+    $g_urls{lc $1} = _EncodeAmpsAndAngles( $2 );  # Link IDs are case-insensitive
+    if ($3) {
+      $g_titles{lc $1} = $3;
+      $g_titles{lc $1} =~ s/"/"/g;
+    }
+  }
+
+  return $text;
+}
+
+
+sub _HashHTMLBlocks {
+  my $text = shift;
+  my $less_than_tab = $g_tab_width - 1;
+
+  # Hashify HTML blocks:
+  # We only want to do this for block-level HTML tags, such as headers,
+  # lists, and tables. That's because we still want to wrap 
    s around
+  # "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+  # phrase emphasis, and spans. The list of tags we're looking for is
+  # hard-coded:
+  my $block_tags_a = qr/p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del/;
+  my $block_tags_b = qr/p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math/;
+
+  # First, look for nested blocks, e.g.:
+  #   
    
+  #     
    
+  #     tags for inner block must be indented.
+  #     
    
+  #   
    
+  #
+  # The outermost tags must start at the left margin for this to match, and
+  # the inner nested divs must be indented.
+  # We need to do this before the next, more liberal match, because the next
+  # match will start at the first `
    ` and stop at the first `
    `.
+  $text =~ s{
+        (            # save in $1
+          ^          # start of line  (with /m)
+          <($block_tags_a)  # start tag = $2
+          \b          # word break
+          (.*\n)*?      # any number of lines, minimally matching
+                  # the matching end tag
+          [ \t]*        # trailing spaces/tabs
+          (?=\n+|\Z)  # followed by a newline or end of document
+        )
+      }{
+        my $key = md5_hex($1);
+        $g_html_blocks{$key} = $1;
+        "\n\n" . $key . "\n\n";
+      }egmx;
+
+
+  #
+  # Now match more liberally, simply from `\n` to `\n`
+  #
+  $text =~ s{
+        (            # save in $1
+          ^          # start of line  (with /m)
+          <($block_tags_b)  # start tag = $2
+          \b          # word break
+          (.*\n)*?      # any number of lines, minimally matching
+          .*        # the matching end tag
+          [ \t]*        # trailing spaces/tabs
+          (?=\n+|\Z)  # followed by a newline or end of document
+        )
+      }{
+        my $key = md5_hex($1);
+        $g_html_blocks{$key} = $1;
+        "\n\n" . $key . "\n\n";
+      }egmx;
+  # Special case just for 
    . It was easier to make a special case than
+  # to make the other regex more complicated.  
+  $text =~ s{
+        (?:
+          (?<=\n\n)    # Starting after a blank line
+          |        # or
+          \A\n?      # the beginning of the doc
+        )
+        (            # save in $1
+          [ ]{0,$less_than_tab}
+          <(hr)        # start tag = $2
+          \b          # word break
+          ([^<>])*?      # 
+          /?>          # the matching end tag
+          [ \t]*
+          (?=\n{2,}|\Z)    # followed by a blank line or end of document
+        )
+      }{
+        my $key = md5_hex($1);
+        $g_html_blocks{$key} = $1;
+        "\n\n" . $key . "\n\n";
+      }egx;
+
+  # Special case for standalone HTML comments:
+  $text =~ s{
+        (?:
+          (?<=\n\n)    # Starting after a blank line
+          |        # or
+          \A\n?      # the beginning of the doc
+        )
+        (            # save in $1
+          [ ]{0,$less_than_tab}
+          (?s:
+            
+          )
+          [ \t]*
+          (?=\n{2,}|\Z)    # followed by a blank line or end of document
+        )
+      }{
+        my $key = md5_hex($1);
+        $g_html_blocks{$key} = $1;
+        "\n\n" . $key . "\n\n";
+      }egx;
+
+
+  return $text;
+}
+
+
+sub _RunBlockGamut {
+#
+# These are all the transformations that form block-level
+# tags like paragraphs, headers, and list items.
+#
+  my $text = shift;
+
+  $text = _DoHeaders($text);
+
+  # Do Horizontal Rules:
+  $text =~ s{^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$}{\n tags around block-level tags.
+  $text = _HashHTMLBlocks($text);
+  $text = _FormParagraphs($text);
+
+  return $text;
+}
+
+
+sub _RunSpanGamut {
+#
+# These are all the transformations that occur *within* block-level
+# tags like paragraphs, headers, and list items.
+#
+  my $text = shift;
+
+  $text = _EscapeSpecialCharsWithinTagAttributes($text);
+  $text = _DoCodeSpans($text);
+  $text = _EncodeBackslashEscapes($text);
+
+  # Process anchor and image tags. Images must come first,
+  # because ![foo][f] looks like an anchor.
+  $text = _DoImages($text);
+  $text = _DoAnchors($text);
+
+  # Make links out of things like ``
+  # Must come after _DoAnchors(), because you can use < and >
+  # delimiters in inline links like [this]().
+  $text = _DoAutoLinks($text);
+  $text = _EncodeAmpsAndAngles($text);
+  $text = _DoItalicsAndBold($text);
+
+  # Do hard breaks:
+  $text =~ s/ {2,}\n/  -- encode [\ ` * _] so they
+# don't conflict with their use in Markdown for code, italics and strong.
+# We're replacing each such character with its corresponding MD5 checksum
+# value; this is likely overkill, but it should prevent us from colliding
+# with the escape values by accident.
+#
+  my $text = shift;
+  my $tokens ||= _TokenizeHTML($text);
+  $text = '';   # rebuild $text from the tokens
+
+  foreach my $cur_token (@$tokens) {
+    if ($cur_token->[0] eq "tag") {
+      $cur_token->[1] =~  s! \\ !$g_escape_table{'\\'}!gx;
+      $cur_token->[1] =~  s! `  !$g_escape_table{'`'}!gx;
+      $cur_token->[1] =~  s! \* !$g_escape_table{'*'}!gx;
+      $cur_token->[1] =~  s! _  !$g_escape_table{'_'}!gx;
+    }
+    $text .= $cur_token->[1];
+  }
+  return $text;
+}
+
+
+sub _DoAnchors {
+#
+# Turn Markdown link shortcuts into XHTML      tags.
+#
+  my $text = shift;
+
+  #
+  # First, handle reference-style links: [link text] [id]
+  #
+  $text =~ s{
+    (          # wrap whole match in $1
+      \[
+        ($g_nested_brackets)  # link text = $2
+      \]
+
+      [ ]?        # one optional space
+      (?:\n[ ]*)?    # one optional newline followed by spaces
+
+      \[
+        (.*?)    # id = $3
+      \]
+    )
+  }{
+    my $result;
+    my $whole_match = $1;
+    my $link_text   = $2;
+    my $link_id     = lc $3;
+
+    if ($link_id eq "") {
+      $link_id = lc $link_text;     # for shortcut links like [this][].
+    }
+
+    if (defined $g_urls{$link_id}) {
+      my $url = $g_urls{$link_id};
+      $url =~ s! \* !$g_escape_table{'*'}!gx;    # We've got to encode these to avoid
+      $url =~ s!  _ !$g_escape_table{'_'}!gx;    # conflicting with italics/bold.
+      $result = "?  # href = $3
+        [ \t]*
+      (      # $4
+        (['"])  # quote char = $5
+        (.*?)    # Title = $6
+        \5    # matching quote
+      )?      # title is optional
+      \)
+    )
+  }{
+    my $result;
+    my $whole_match = $1;
+    my $link_text   = $2;
+    my $url        = $3;
+    my $title    = $6;
+
+    $url =~ s! \* !$g_escape_table{'*'}!gx;    # We've got to encode these to avoid
+    $url =~ s!  _ !$g_escape_table{'_'}!gx;    # conflicting with italics/bold.
+    $result = " tags.
+#
+  my $text = shift;
+
+  #
+  # First, handle reference-style labeled images: ![alt text][id]
+  #
+  $text =~ s{
+    (        # wrap whole match in $1
+      !\[
+        (.*?)    # alt text = $2
+      \]
+
+      [ ]?        # one optional space
+      (?:\n[ ]*)?    # one optional newline followed by spaces
+
+      \[
+        (.*?)    # id = $3
+      \]
+
+    )
+  }{
+    my $result;
+    my $whole_match = $1;
+    my $alt_text    = $2;
+    my $link_id     = lc $3;
+
+    if ($link_id eq "") {
+      $link_id = lc $alt_text;     # for shortcut links like ![this][].
+    }
+
+    $alt_text =~ s/"/"/g;
+    if (defined $g_urls{$link_id}) {
+      my $url = $g_urls{$link_id};
+      $url =~ s! \* !$g_escape_table{'*'}!gx;    # We've got to encode these to avoid
+      $url =~ s!  _ !$g_escape_table{'_'}!gx;    # conflicting with italics/bold.
+      $result = "\"$alt_text\"";?  # src url = $3
+        [ \t]*
+      (      # $4
+        (['"])  # quote char = $5
+        (.*?)    # title = $6
+        \5    # matching quote
+        [ \t]*
+      )?      # title is optional
+      \)
+    )
+  }{
+    my $result;
+    my $whole_match = $1;
+    my $alt_text    = $2;
+    my $url        = $3;
+    my $title    = '';
+    if (defined($6)) {
+      $title    = $6;
+    }
+
+    $alt_text =~ s/"/"/g;
+    $title    =~ s/"/"/g;
+    $url =~ s! \* !$g_escape_table{'*'}!gx;    # We've got to encode these to avoid
+    $url =~ s!  _ !$g_escape_table{'_'}!gx;    # conflicting with italics/bold.
+    $result = "\"$alt_text\"";"  .  _RunSpanGamut($1)  .  "\n\n";
+  }egmx;
+
+  $text =~ s{ ^(.+)[ \t]*\n-+[ \t]*\n+ }{
+    "
    "  .  _RunSpanGamut($1)  .  "
    \n\n";
+  }egmx;
+
+
+  # atx-style headers:
+  #  # Header 1
+  #  ## Header 2
+  #  ## Header 2 with closing hashes ##
+  #  ...
+  #  ###### Header 6
+  #
+  $text =~ s{
+      ^(\#{1,6})  # $1 = string of #'s
+      [ \t]*
+      (.+?)    # $2 = Header text
+      [ \t]*
+      \#*      # optional closing #'s (not counted)
+      \n+
+    }{
+      my $h_level = length($1);
+      ""  .  _RunSpanGamut($2)  .  "\n\n";
+    }egmx;
+
+  return $text;
+}
+
+
+sub _DoLists {
+#
+# Form HTML ordered (numbered) and unordered (bulleted) lists.
+#
+  my $text = shift;
+  my $less_than_tab = $g_tab_width - 1;
+
+  # Re-usable patterns to match list item bullets and number markers:
+  my $marker_ul  = qr/[*+-]/;
+  my $marker_ol  = qr/\d+[.]/;
+  my $marker_any = qr/(?:$marker_ul|$marker_ol)/;
+
+  # Re-usable pattern to match any entirel ul or ol list:
+  my $whole_list = qr{
+    (                # $1 = whole list
+      (                # $2
+      [ ]{0,$less_than_tab}
+      (${marker_any})        # $3 = first list item marker
+      [ \t]+
+      )
+      (?s:.+?)
+      (                # $4
+        \z
+      |
+        \n{2,}
+        (?=\S)
+        (?!            # Negative lookahead for another list item marker
+        [ \t]*
+        ${marker_any}[ \t]+
+        )
+      )
+    )
+  }mx;
+
+  # We use a different prefix before nested lists than top-level lists.
+  # See extended comment in _ProcessListItems().
+  #
+  # Note: There's a bit of duplication here. My original implementation
+  # created a scalar regex pattern as the conditional result of the test on
+  # $g_list_level, and then only ran the $text =~ s{...}{...}egmx
+  # substitution once, using the scalar as the pattern. This worked,
+  # everywhere except when running under MT on my hosting account at Pair
+  # Networks. There, this caused all rebuilds to be killed by the reaper (or
+  # perhaps they crashed, but that seems incredibly unlikely given that the
+  # same script on the same server ran fine *except* under MT. I've spent
+  # more time trying to figure out why this is happening than I'd like to
+  # admit. My only guess, backed up by the fact that this workaround works,
+  # is that Perl optimizes the substition when it can figure out that the
+  # pattern will never change, and when this optimization isn't on, we run
+  # afoul of the reaper. Thus, the slightly redundant code that uses two
+  # static s/// patterns rather than one conditional pattern.
+
+  if ($g_list_level) {
+    $text =~ s{
+        ^
+        $whole_list
+      }{
+        my $list = $1;
+        my $list_type = ($3 =~ m/$marker_ul/) ? "ul" : "ol";
+
+        # Turn double returns into triple returns, so that we can make a
+        # paragraph for the last item in a list, if necessary:
+        $list =~ s/\n{2,}/\n\n\n/g;
+        my $result = _ProcessListItems($list, $marker_any);
+
+        # Trim any trailing whitespace, to put the closing ``
+        # up on the preceding line, to get it past the current stupid
+        # HTML block parser. This is a hack to work around the terrible
+        # hack that is the HTML block parser.
+        $result =~ s{\s+$}{};
+        $result = "<$list_type>" . $result . "\n";
+        $result;
+      }egmx;
+  }
+  else {
+    $text =~ s{
+        (?:(?<=\n\n)|\A\n?)
+        $whole_list
+      }{
+        my $list = $1;
+        my $list_type = ($3 =~ m/$marker_ul/) ? "ul" : "ol";
+        # Turn double returns into triple returns, so that we can make a
+        # paragraph for the last item in a list, if necessary:
+        $list =~ s/\n{2,}/\n\n\n/g;
+        my $result = _ProcessListItems($list, $marker_any);
+        $result = "<$list_type>\n" . $result . "\n";
+        $result;
+      }egmx;
+  }
+
+
+  return $text;
+}
+
+
+sub _ProcessListItems {
+#
+#  Process the contents of a single ordered or unordered list, splitting it
+#  into individual list items.
+#
+
+  my $list_str = shift;
+  my $marker_any = shift;
+
+
+  # The $g_list_level global keeps track of when we're inside a list.
+  # Each time we enter a list, we increment it; when we leave a list,
+  # we decrement. If it's zero, we're not in a list anymore.
+  #
+  # We do this because when we're not inside a list, we want to treat
+  # something like this:
+  #
+  #    I recommend upgrading to version
+  #    8. Oops, now this line is treated
+  #    as a sub-list.
+  #
+  # As a single paragraph, despite the fact that the second line starts
+  # with a digit-period-space sequence.
+  #
+  # Whereas when we're inside a list (or sub-list), that line will be
+  # treated as the start of a sub-list. What a kludge, huh? This is
+  # an aspect of Markdown's syntax that's hard to parse perfectly
+  # without resorting to mind-reading. Perhaps the solution is to
+  # change the syntax rules such that sub-lists must start with a
+  # starting cardinal number; e.g. "1." or "a.".
+
+  $g_list_level++;
+
+  # trim trailing blank lines:
+  $list_str =~ s/\n{2,}\z/\n/;
+
+
+  $list_str =~ s{
+    (\n)?              # leading line = $1
+    (^[ \t]*)            # leading whitespace = $2
+    ($marker_any) [ \t]+      # list marker = $3
+    ((?s:.+?)            # list item text   = $4
+    (\n{1,2}))
+    (?= \n* (\z | \2 ($marker_any) [ \t]+))
+  }{
+    my $item = $4;
+    my $leading_line = $1;
+    my $leading_space = $2;
+
+    if ($leading_line or ($item =~ m/\n{2,}/)) {
+      $item = _RunBlockGamut(_Outdent($item));
+    }
+    else {
+      # Recursion for sub-lists:
+      $item = _DoLists(_Outdent($item));
+      chomp $item;
+      $item = _RunSpanGamut($item);
+    }
+
+    "
  • " . $item . "
    • \n";
+  }egmx;
+
+  $g_list_level--;
+  return $list_str;
+}
+
+
+
+sub _DoCodeBlocks {
+#
+#  Process Markdown `
    ` blocks.
+#  
+
+  my $text = shift;
+
+  $text =~ s{
+      (?:\n\n|\A)
+      (              # $1 = the code block -- one or more lines, starting with a space/tab
+        (?:
+          (?:[ ]{$g_tab_width} | \t)  # Lines must start with a tab or a tab-width of spaces
+          .*\n+
+        )+
+      )
+      ((?=^[ ]{0,$g_tab_width}\S)|\Z)  # Lookahead for non-space at line-start, or end of doc
+    }{
+      my $codeblock = $1;
+      my $result; # return value
+
+      $codeblock = _EncodeCode(_Outdent($codeblock));
+      $codeblock = _Detab($codeblock);
+      $codeblock =~ s/\A\n+//; # trim leading newlines
+      $codeblock =~ s/\s+\z//; # trim trailing whitespace
+
+      $result = "\n\n
    " . $codeblock . "\n
    \n\n";
+
+      $result;
+    }egmx;
+
+  return $text;
+}
+
+
+sub _DoCodeSpans {
+#
+#   *  Backtick quotes are used for  spans.
+# 
+#   *  You can use multiple backticks as the delimiters if you want to
+#     include literal backticks in the code span. So, this input:
+#     
+#         Just type ``foo `bar` baz`` at the prompt.
+#     
+#       Will translate to:
+#     
+#         
    Just type foo `bar` baz at the prompt.
    
+#     
+#    There's no arbitrary limit to the number of backticks you
+#    can use as delimters. If you need three consecutive backticks
+#    in your code, use four for delimiters, etc.
+#
+#  *  You can use spaces to get literal backticks at the edges:
+#     
+#         ... type `` `bar` `` ...
+#     
+#       Turns to:
+#     
+#         ... type `bar` ...
+#
+
+  my $text = shift;
+
+  $text =~ s@
+      (?$c    ";
+    @egsx;
+
+  return $text;
+}
+
+
+sub _EncodeCode {
+#
+# Encode/escape certain characters inside Markdown code runs.
+# The point is that in code, these characters are literals,
+# and lose their special Markdown meanings.
+#
+    local $_ = shift;
+
+  # Encode all ampersands; HTML entities are not
+  # entities within a Markdown code span.
+  s/&/&/g;
+
+  # Encode $'s, but only if we're running under Blosxom.
+  # (Blosxom interpolates Perl variables in article bodies.)
+  {
+    no warnings 'once';
+      if (defined($blosxom::version)) {
+        s/\$/$/g;  
+      }
+    }
+
+
+  # Do the angle bracket song and dance:
+  s! <  !<!gx;
+  s! >  !>!gx;
+
+  # Now, escape characters that are magic in Markdown:
+  s! \* !$g_escape_table{'*'}!gx;
+  s! _  !$g_escape_table{'_'}!gx;
+  s! {  !$g_escape_table{'{'}!gx;
+  s! }  !$g_escape_table{'}'}!gx;
+  s! \[ !$g_escape_table{'['}!gx;
+  s! \] !$g_escape_table{']'}!gx;
+  s! \\ !$g_escape_table{'\\'}!gx;
+
+  return $_;
+}
+
+
+sub _DoItalicsAndBold {
+  my $text = shift;
+
+  #  must go first:
+  $text =~ s{ (\*\*|__) (?=\S) (.+?[*_]*) (?<=\S) \1 }
+    {$2}gsx;
+
+  $text =~ s{ (\*|_) (?=\S) (.+?) (?<=\S) \1 }
+    {$2}gsx;
+
+  return $text;
+}
+
+
+sub _DoBlockQuotes {
+  my $text = shift;
+
+  $text =~ s{
+      (                # Wrap whole match in $1
+      (
+        ^[ \t]*>[ \t]?      # '>' at the start of a line
+          .+\n          # rest of the first line
+        (.+\n)*          # subsequent consecutive lines
+        \n*            # blanks
+      )+
+      )
+    }{
+      my $bq = $1;
+      $bq =~ s/^[ \t]*>[ \t]?//gm;  # trim one level of quoting
+      $bq =~ s/^[ \t]+$//mg;      # trim whitespace-only lines
+      $bq = _RunBlockGamut($bq);    # recurse
+
+      $bq =~ s/^/  /g;
+      # These leading spaces screw with 
     content, so we need to fix that:
+      $bq =~ s{
+          (\s*
    .+?
    )
+        }{
+          my $pre = $1;
+          $pre =~ s/^  //mg;
+          $pre;
+        }egsx;
+
+      "
    \n$bq\n
    \n\n";
+    }egmx;
+
+
+  return $text;
+}
+
+
+sub _FormParagraphs {
+#
+#  Params:
+#    $text - string to process with html 
     tags
+#
+  my $text = shift;
+
+  # Strip leading and trailing lines:
+  $text =~ s/\A\n+//;
+  $text =~ s/\n+\z//;
+
+  my @grafs = split(/\n{2,}/, $text);
+
+  #
+  # Wrap 
     tags.
+  #
+  foreach (@grafs) {
+    unless (defined( $g_html_blocks{$_} )) {
+      $_ = _RunSpanGamut($_);
+      s/^([ \t]*)/
    /;
+      $_ .= "
    ";
+    }
+  }
+
+  #
+  # Unhashify HTML blocks
+  #
+  foreach (@grafs) {
+    if (defined( $g_html_blocks{$_} )) {
+      $_ = $g_html_blocks{$_};
+    }
+  }
+
+  return join "\n\n", @grafs;
+}
+
+
+sub _EncodeAmpsAndAngles {
+# Smart processing for ampersands and angle brackets that need to be encoded.
+
+  my $text = shift;
+
+  # Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
+  #   http://bumppo.net/projects/amputator/
+   $text =~ s/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/&/g;
+
+  # Encode naked <'s
+   $text =~ s{<(?![a-z/?\$!])}{<}gi;
+
+  return $text;
+}
+
+
+sub _EncodeBackslashEscapes {
+#
+#   Parameter:  String.
+#   Returns:    The string, with after processing the following backslash
+#               escape sequences.
+#
+    local $_ = shift;
+
+    s! \\\\  !$g_escape_table{'\\'}!gx;    # Must process escaped backslashes first.
+    s! \\`   !$g_escape_table{'`'}!gx;
+    s! \\\*  !$g_escape_table{'*'}!gx;
+    s! \\_   !$g_escape_table{'_'}!gx;
+    s! \\\{  !$g_escape_table{'{'}!gx;
+    s! \\\}  !$g_escape_table{'}'}!gx;
+    s! \\\[  !$g_escape_table{'['}!gx;
+    s! \\\]  !$g_escape_table{']'}!gx;
+    s! \\\(  !$g_escape_table{'('}!gx;
+    s! \\\)  !$g_escape_table{')'}!gx;
+    s! \\>   !$g_escape_table{'>'}!gx;
+    s! \\\#  !$g_escape_table{'#'}!gx;
+    s! \\\+  !$g_escape_table{'+'}!gx;
+    s! \\\-  !$g_escape_table{'-'}!gx;
+    s! \\\.  !$g_escape_table{'.'}!gx;
+    s{ \\!  }{$g_escape_table{'!'}}gx;
+
+    return $_;
+}
+
+
+sub _DoAutoLinks {
+  my $text = shift;
+
+  $text =~ s{<((https?|ftp):[^'">\s]+)>}{    $1}gi;
+
+  # Email addresses: 
+  $text =~ s{
+    <
+        (?:mailto:)?
+    (
+      [-.\w]+
+      \@
+      [-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
+    )
+    >
+  }{
+    _EncodeEmailAddress( _UnescapeSpecialChars($1) );
+  }egix;
+
+  return $text;
+}
+
+
+sub _EncodeEmailAddress {
+#
+#  Input: an email address, e.g. "foo@example.com"
+#
+#  Output: the email address as a mailto link, with each character
+#    of the address encoded as either a decimal or hex entity, in
+#    the hopes of foiling most address harvesting spam bots. E.g.:
+#
+#    foo
+#       @example.com
+#
+#  Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
+#  mailing list: 
+#
+
+  my $addr = shift;
+
+  srand;
+  my @encode = (
+    sub { '&#' .                 ord(shift)   . ';' },
+    sub { '&#x' . sprintf( "%X", ord(shift) ) . ';' },
+    sub {                            shift          },
+  );
+
+  $addr = "mailto:" . $addr;
+
+  $addr =~ s{(.)}{
+    my $char = $1;
+    if ( $char eq '@' ) {
+      # this *must* be encoded. I insist.
+      $char = $encode[int rand 1]->($char);
+    } elsif ( $char ne ':' ) {
+      # leave ':' alone (to spot mailto: later)
+      my $r = rand;
+      # roughly 10% raw, 45% hex, 45% dec
+      $char = (
+        $r > .9   ?  $encode[2]->($char)  :
+        $r < .45  ?  $encode[1]->($char)  :
+               $encode[0]->($char)
+      );
+    }
+    $char;
+  }gex;
+
+  $addr = qq{$addr};
+  $addr =~ s{">.+?:}{">}; # strip the mailto: from the visible part
+
+  return $addr;
+}
+
+
+sub _UnescapeSpecialChars {
+#
+# Swap back in all the special characters we've hidden.
+#
+  my $text = shift;
+
+  while( my($char, $hash) = each(%g_escape_table) ) {
+    $text =~ s/$hash/$char/g;
+  }
+    return $text;
+}
+
+
+sub _TokenizeHTML {
+#
+#   Parameter:  String containing HTML markup.
+#   Returns:    Reference to an array of the tokens comprising the input
+#               string. Each token is either a tag (possibly with nested,
+#               tags contained therein, such as , or a
+#               run of text between tags. Each element of the array is a
+#               two-element array; the first is either 'tag' or 'text';
+#               the second is the actual value.
+#
+#
+#   Derived from the _tokenize() subroutine from Brad Choate's MTRegex plugin.
+#       
+#
+
+    my $str = shift;
+    my $pos = 0;
+    my $len = length $str;
+    my @tokens;
+
+    my $depth = 6;
+    my $nested_tags = join('|', ('(?:<[a-z/!$](?:[^<>]') x $depth) . (')*>)' x  $depth);
+    my $match = qr/(?s:  ) |  # comment
+                   (?s: <\? .*? \?> ) |              # processing instruction
+                   $nested_tags/ix;                   # nested tags
+
+    while ($str =~ m/($match)/g) {
+        my $whole_tag = $1;
+        my $sec_start = pos $str;
+        my $tag_start = $sec_start - length $whole_tag;
+        if ($pos < $tag_start) {
+            push @tokens, ['text', substr($str, $pos, $tag_start - $pos)];
+        }
+        push @tokens, ['tag', $whole_tag];
+        $pos = pos $str;
+    }
+    push @tokens, ['text', substr($str, $pos, $len - $pos)] if $pos < $len;
+    \@tokens;
+}
+
+
+sub _Outdent {
+#
+# Remove one level of line-leading tabs or spaces
+#
+  my $text = shift;
+
+  $text =~ s/^(\t|[ ]{1,$g_tab_width})//gm;
+  return $text;
+}
+
+
+sub _Detab {
+#
+# Cribbed from a post by Bart Lateur:
+# 
+#
+  my $text = shift;
+
+  $text =~ s{(.*?)\t}{$1.(' ' x ($g_tab_width - length($1) % $g_tab_width))}ge;
+  return $text;
+}
+
+
+1;
+
+__END__
+
+
+=pod
+
+=head1 NAME
+
+B
+
+
+=head1 SYNOPSIS
+
+B [ B<--html4tags> ] [ B<--version> ] [ B<-shortversion> ]
+    [ I ... ]
+
+
+=head1 DESCRIPTION
+
+Markdown is a text-to-HTML filter; it translates an easy-to-read /
+easy-to-write structured text format into HTML. Markdown's text format
+is most similar to that of plain text email, and supports features such
+as headers, *emphasis*, code blocks, blockquotes, and links.
+
+Markdown's syntax is designed not as a generic markup language, but
+specifically to serve as a front-end to (X)HTML. You can  use span-level
+HTML tags anywhere in a Markdown document, and you can use block level
+HTML tags (like 
     and  as well).
+
+For more information about Markdown's syntax, see:
+
+    http://daringfireball.net/projects/markdown/
+
+
+=head1 OPTIONS
+
+Use "--" to end switch parsing. For example, to open a file named "-z", use:
+
+  Markdown.pl -- -z
+
+=over 4
+
+
+=item B<--html4tags>
+
+Use HTML 4 style for empty element tags, e.g.:
+
+    
    
+
+instead of Markdown's default XHTML style tags, e.g.:
+
+    
    
+
+
+=item B<-v>, B<--version>
+
+Display Markdown's version number and copyright information.
+
+
+=item B<-s>, B<--shortversion>
+
+Display the short-form version number.
+
+
+=back
+
+
+
+=head1 BUGS
+
+To file bug reports or feature requests (other than topics listed in the
+Caveats section above) please send email to:
+
+    support@daringfireball.net
+
+Please include with your report: (1) the example input; (2) the output
+you expected; (3) the output Markdown actually produced.
+
+
+=head1 VERSION HISTORY
+
+See the readme file for detailed release notes for this version.
+
+1.0.2b2 - 20 Mar 2005
+
+  +  Fix for nested sub-lists in list-paragraph mode. Previously we got
+    a spurious extra level of `
    ` tags for something like this:
+    
+      *  this
+      
+        *  sub
+      
+        that
+    
+  +  Experimental support for [this] as a synonym for [this][].
+    (Note to self: No test yet for this.)
+    Be sure to test, e.g.: [permutations of this sort of [thing][].]
+
+
+1.0.2b1 - 28  Feb 2005
+
+  +  Fix for backticks within HTML tag: like this
+
+  +  Fix for escaped backticks still triggering code spans:
+  
+      There are two raw backticks here: \` and here: \`, not a code span
+
+1.0.1 - 14 Dec 2004
+
+1.0 - 28 Aug 2004
+
+
+=head1 AUTHOR
+
+    John Gruber
+    http://daringfireball.net
+
+    PHP port and other contributions by Michel Fortin
+    http://michelf.com
+
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright (c) 2003-2005 John Gruber   
+   
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name "Markdown" nor the names of its contributors may
+  be used to endorse or promote products derived from this software
+  without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
+
+=cut
diff --git a/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b7.pl b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b7.pl
new file mode 100644
index 0000000000..c3b351fed2
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/Markdown-1.0.2b7.pl
@@ -0,0 +1,1642 @@
+#!/usr/bin/env perl
+
+#
+# Markdown -- A text-to-HTML conversion tool for web writers
+#
+# Copyright (c) 2004-2005 John Gruber
+# 
+#
+
+
+package Markdown;
+require 5.006_000;
+use strict;
+use warnings;
+
+use Digest::MD5 qw(md5_hex);
+use vars qw($VERSION);
+$VERSION = '1.0.2b7';
+# Tue 29 Aug 2006
+
+## Disabled; causes problems under Perl 5.6.1:
+# use utf8;
+# binmode( STDOUT, ":utf8" );  # c.f.: http://acis.openlib.org/dev/perl-unicode-struggle.html
+
+#
+# Global default settings:
+#
+my $g_empty_element_suffix = " />";     # Change to ">" for HTML output
+my $g_tab_width = 4;
+
+
+#
+# Globals:
+#
+
+# Regex to match balanced [brackets]. See Friedl's
+# "Mastering Regular Expressions", 2nd Ed., pp. 328-331.
+my $g_nested_brackets;
+$g_nested_brackets = qr{
+	(?> 								# Atomic matching
+	   [^\[\]]+							# Anything other than brackets
+	 | 
+	   \[
+		 (??{ $g_nested_brackets })		# Recursive set of nested brackets
+	   \]
+	)*
+}x;
+
+
+# Table of hash values for escaped characters:
+my %g_escape_table;
+foreach my $char (split //, '\\`*_{}[]()>#+-.!') {
+	$g_escape_table{$char} = md5_hex($char);
+}
+
+
+# Global hashes, used by various utility routines
+my %g_urls;
+my %g_titles;
+my %g_html_blocks;
+
+# Used to track when we're inside an ordered or unordered list
+# (see _ProcessListItems() for details):
+my $g_list_level = 0;
+
+
+#### Blosxom plug-in interface ##########################################
+
+# Set $g_blosxom_use_meta to 1 to use Blosxom's meta plug-in to determine
+# which posts Markdown should process, using a "meta-markup: markdown"
+# header. If it's set to 0 (the default), Markdown will process all
+# entries.
+my $g_blosxom_use_meta = 0;
+
+sub start { 1; }
+sub story {
+	my($pkg, $path, $filename, $story_ref, $title_ref, $body_ref) = @_;
+
+	if ( (! $g_blosxom_use_meta) or
+	     (defined($meta::markup) and ($meta::markup =~ /^\s*markdown\s*$/i))
+	     ){
+			$$body_ref  = Markdown($$body_ref);
+     }
+     1;
+}
+
+
+#### Movable Type plug-in interface #####################################
+eval {require MT};  # Test to see if we're running in MT.
+unless ($@) {
+    require MT;
+    import  MT;
+    require MT::Template::Context;
+    import  MT::Template::Context;
+
+	eval {require MT::Plugin};  # Test to see if we're running >= MT 3.0.
+	unless ($@) {
+		require MT::Plugin;
+		import  MT::Plugin;
+		my $plugin = new MT::Plugin({
+			name => "Markdown",
+			description => "A plain-text-to-HTML formatting plugin. (Version: $VERSION)",
+			doc_link => 'http://daringfireball.net/projects/markdown/'
+		});
+		MT->add_plugin( $plugin );
+	}
+
+	MT::Template::Context->add_container_tag(MarkdownOptions => sub {
+		my $ctx	 = shift;
+		my $args = shift;
+		my $builder = $ctx->stash('builder');
+		my $tokens = $ctx->stash('tokens');
+
+		if (defined ($args->{'output'}) ) {
+			$ctx->stash('markdown_output', lc $args->{'output'});
+		}
+
+		defined (my $str = $builder->build($ctx, $tokens) )
+			or return $ctx->error($builder->errstr);
+		$str;		# return value
+	});
+
+	MT->add_text_filter('markdown' => {
+		label     => 'Markdown',
+		docs      => 'http://daringfireball.net/projects/markdown/',
+		on_format => sub {
+			my $text = shift;
+			my $ctx  = shift;
+			my $raw  = 0;
+		    if (defined $ctx) {
+		    	my $output = $ctx->stash('markdown_output'); 
+				if (defined $output  &&  $output =~ m/^html/i) {
+					$g_empty_element_suffix = ">";
+					$ctx->stash('markdown_output', '');
+				}
+				elsif (defined $output  &&  $output eq 'raw') {
+					$raw = 1;
+					$ctx->stash('markdown_output', '');
+				}
+				else {
+					$raw = 0;
+					$g_empty_element_suffix = " />";
+				}
+			}
+			$text = $raw ? $text : Markdown($text);
+			$text;
+		},
+	});
+
+	# If SmartyPants is loaded, add a combo Markdown/SmartyPants text filter:
+	my $smartypants;
+
+	{
+		no warnings "once";
+		$smartypants = $MT::Template::Context::Global_filters{'smarty_pants'};
+	}
+
+	if ($smartypants) {
+		MT->add_text_filter('markdown_with_smartypants' => {
+			label     => 'Markdown With SmartyPants',
+			docs      => 'http://daringfireball.net/projects/markdown/',
+			on_format => sub {
+				my $text = shift;
+				my $ctx  = shift;
+				if (defined $ctx) {
+					my $output = $ctx->stash('markdown_output'); 
+					if (defined $output  &&  $output eq 'html') {
+						$g_empty_element_suffix = ">";
+					}
+					else {
+						$g_empty_element_suffix = " />";
+					}
+				}
+				$text = Markdown($text);
+				$text = $smartypants->($text, '1');
+			},
+		});
+	}
+}
+else {
+#### BBEdit/command-line text filter interface ##########################
+# Needs to be hidden from MT (and Blosxom when running in static mode).
+
+    # We're only using $blosxom::version once; tell Perl not to warn us:
+	no warnings 'once';
+    unless ( defined($blosxom::version) ) {
+		use warnings;
+
+		#### Check for command-line switches: #################
+		my %cli_opts;
+		use Getopt::Long;
+		Getopt::Long::Configure('pass_through');
+		GetOptions(\%cli_opts,
+			'version',
+			'shortversion',
+			'html4tags',
+		);
+		if ($cli_opts{'version'}) {		# Version info
+			print "\nThis is Markdown, version $VERSION.\n";
+			print "Copyright 2004 John Gruber\n";
+			print "http://daringfireball.net/projects/markdown/\n\n";
+			exit 0;
+		}
+		if ($cli_opts{'shortversion'}) {		# Just the version number string.
+			print $VERSION;
+			exit 0;
+		}
+		if ($cli_opts{'html4tags'}) {			# Use HTML tag style instead of XHTML
+			$g_empty_element_suffix = ">";
+		}
+
+
+		#### Process incoming text: ###########################
+		my $text;
+		{
+			local $/;               # Slurp the whole file
+			$text = <>;
+		}
+        print Markdown($text);
+    }
+}
+
+
+
+sub Markdown {
+#
+# Main function. The order in which other subs are called here is
+# essential. Link and image substitutions need to happen before
+# _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the 
+# and  tags get encoded.
+#
+	my $text = shift;
+
+	# Clear the global hashes. If we don't clear these, you get conflicts
+	# from other articles when generating a page which contains more than
+	# one article (e.g. an index page that shows the N most recent
+	# articles):
+	%g_urls = ();
+	%g_titles = ();
+	%g_html_blocks = ();
+
+
+	# Standardize line endings:
+	$text =~ s{\r\n}{\n}g; 	# DOS to Unix
+	$text =~ s{\r}{\n}g; 	# Mac to Unix
+
+	# Make sure $text ends with a couple of newlines:
+	$text .= "\n\n";
+
+	# Convert all tabs to spaces.
+	$text = _Detab($text);
+
+	# Strip any lines consisting only of spaces and tabs.
+	# This makes subsequent regexen easier to write, because we can
+	# match consecutive blank lines with /\n+/ instead of something
+	# contorted like /[ \t]*\n+/ .
+	$text =~ s/^[ \t]+$//mg;
+
+	# Turn block-level HTML blocks into hash entries
+	$text = _HashHTMLBlocks($text);
+
+	# Strip link definitions, store in hashes.
+	$text = _StripLinkDefinitions($text);
+
+	$text = _RunBlockGamut($text);
+
+	$text = _UnescapeSpecialChars($text);
+
+	return $text . "\n";
+}
+
+
+sub _StripLinkDefinitions {
+#
+# Strips link definitions from text, stores the URLs and titles in
+# hash references.
+#
+	my $text = shift;
+	my $less_than_tab = $g_tab_width - 1;
+
+	# Link defs are in the form: ^[id]: url "optional title"
+	while ($text =~ s{
+						^[ ]{0,$less_than_tab}\[(.+)\]:	# id = $1
+						  [ \t]*
+						  \n?				# maybe *one* newline
+						  [ \t]*
+						?			# url = $2
+						  [ \t]*
+						  \n?				# maybe one newline
+						  [ \t]*
+						(?:
+							(?<=\s)			# lookbehind for whitespace
+							["(]
+							(.+?)			# title = $3
+							[")]
+							[ \t]*
+						)?	# title is optional
+						(?:\n+|\Z)
+					}
+					{}mx) {
+		$g_urls{lc $1} = _EncodeAmpsAndAngles( $2 );	# Link IDs are case-insensitive
+		if ($3) {
+			$g_titles{lc $1} = $3;
+			$g_titles{lc $1} =~ s/"/"/g;
+		}
+	}
+
+	return $text;
+}
+
+
+sub _HashHTMLBlocks {
+	my $text = shift;
+	my $less_than_tab = $g_tab_width - 1;
+
+	# Hashify HTML blocks:
+	# We only want to do this for block-level HTML tags, such as headers,
+	# lists, and tables. That's because we still want to wrap 
    s around
+	# "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+	# phrase emphasis, and spans. The list of tags we're looking for is
+	# hard-coded:
+	my $block_tags = qr{
+		  (?:
+			p         |  div     |  h[1-6]  |  blockquote  |  pre       |  table  |
+			dl        |  ol      |  ul      |  script      |  noscript  |  form   |
+			fieldset  |  iframe  |  math    |  ins         |  del
+		  )
+		}x;
+
+	my $tag_attrs = qr{
+						(?:				# Match one attr name/value pair
+							\s+				# There needs to be at least some whitespace
+											# before each attribute name.
+							[\w.:_-]+		# Attribute name
+							\s*=\s*
+							(["'])			# Attribute quoter
+							.+?				# Attribute value
+							\1				# Closing quoter
+						)*				# Zero or more
+					}x;
+
+	my $empty_tag = qr{< \w+ $tag_attrs \s* />}xms;
+	my $open_tag =  qr{< $block_tags $tag_attrs \s* >}xms;
+	my $close_tag = undef;	# let Text::Balanced handle this
+
+	use Text::Balanced qw(gen_extract_tagged);
+	my $extract_block = gen_extract_tagged($open_tag, $close_tag, undef, { ignore => [$empty_tag] });
+
+	my @chunks;
+	## TO-DO: the 0,3 on the next line ought to respect the
+	## tabwidth, or else, we should mandate 4-space tabwidth and
+	## be done with it:
+	while ($text =~ s{^(([ ]{0,3}<)?.*\n)}{}m) {
+		my $cur_line = $1;
+		if (defined $2) {
+			# current line could be start of code block
+
+			my ($tag, $remainder) = $extract_block->($cur_line . $text);
+			if ($tag) {
+				my $key = md5_hex($tag);
+				$g_html_blocks{$key} = $tag;
+				push @chunks, "\n\n" . $key . "\n\n";
+				$text = $remainder;
+			}
+			else {
+				# No tag match, so toss $cur_line into @chunks
+				push @chunks, $cur_line;
+			}
+		}
+		else {
+			# current line could NOT be start of code block
+			push @chunks, $cur_line;
+		}
+
+	}
+	push @chunks, $text; # Whatever is left.
+
+	$text = join '', @chunks;
+
+
+
+	# Special case just for 
    . It was easier to make a special case than
+	# to make the other regex more complicated.	
+	$text =~ s{
+				(?:
+					(?<=\n\n)		# Starting after a blank line
+					|				# or
+					\A\n?			# the beginning of the doc
+				)
+				(						# save in $1
+					[ ]{0,$less_than_tab}
+					<(hr)				# start tag = $2
+					\b					# word break
+					([^<>])*?			# 
+					/?>					# the matching end tag
+					[ \t]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+				)
+			}{
+				my $key = md5_hex($1);
+				$g_html_blocks{$key} = $1;
+				"\n\n" . $key . "\n\n";
+			}egx;
+
+	# Special case for standalone HTML comments:
+	$text =~ s{
+				(?:
+					(?<=\n\n)		# Starting after a blank line
+					|				# or
+					\A\n?			# the beginning of the doc
+				)
+				(						# save in $1
+					[ ]{0,$less_than_tab}
+					(?s:
+						
+					)
+					[ \t]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+				)
+			}{
+				my $key = md5_hex($1);
+				$g_html_blocks{$key} = $1;
+				"\n\n" . $key . "\n\n";
+			}egx;
+
+	# PHP and ASP-style processor instructions ( and <%…%>)
+	$text =~ s{
+				(?:
+					(?<=\n\n)		# Starting after a blank line
+					|				# or
+					\A\n?			# the beginning of the doc
+				)
+				(						# save in $1
+					[ ]{0,$less_than_tab}
+					(?s:
+						<([?%])			# $2
+						.*?
+						\2>
+					)
+					[ \t]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+				)
+			}{
+				my $key = md5_hex($1);
+				$g_html_blocks{$key} = $1;
+				"\n\n" . $key . "\n\n";
+			}egx;
+
+
+	return $text;
+}
+
+
+sub _RunBlockGamut {
+#
+# These are all the transformations that form block-level
+# tags like paragraphs, headers, and list items.
+#
+	my $text = shift;
+
+	$text = _DoHeaders($text);
+
+	# Do Horizontal Rules:
+	$text =~ s{^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$}{\n tags around block-level tags.
+	$text = _HashHTMLBlocks($text);
+	$text = _FormParagraphs($text);
+
+	return $text;
+}
+
+
+sub _RunSpanGamut {
+#
+# These are all the transformations that occur *within* block-level
+# tags like paragraphs, headers, and list items.
+#
+	my $text = shift;
+
+	$text = _DoCodeSpans($text);
+	$text = _EscapeSpecialCharsWithinTagAttributes($text);
+	$text = _EncodeBackslashEscapes($text);
+
+	# Process anchor and image tags. Images must come first,
+	# because ![foo][f] looks like an anchor.
+	$text = _DoImages($text);
+	$text = _DoAnchors($text);
+
+	# Make links out of things like ``
+	# Must come after _DoAnchors(), because you can use < and >
+	# delimiters in inline links like [this]().
+	$text = _DoAutoLinks($text);
+	$text = _EncodeAmpsAndAngles($text);
+	$text = _DoItalicsAndBold($text);
+
+	# Do hard breaks:
+	$text =~ s/ {2,}\n/  -- encode [\ ` * _] so they
+# don't conflict with their use in Markdown for code, italics and strong.
+# We're replacing each such character with its corresponding MD5 checksum
+# value; this is likely overkill, but it should prevent us from colliding
+# with the escape values by accident.
+#
+	my $text = shift;
+	my $tokens ||= _TokenizeHTML($text);
+	$text = '';   # rebuild $text from the tokens
+
+	foreach my $cur_token (@$tokens) {
+		if ($cur_token->[0] eq "tag") {
+			$cur_token->[1] =~  s! \\ !$g_escape_table{'\\'}!gx;
+			$cur_token->[1] =~  s{ (?<=.)(?=.)  }{$g_escape_table{'`'}}gx;
+			$cur_token->[1] =~  s! \* !$g_escape_table{'*'}!gx;
+			$cur_token->[1] =~  s! _  !$g_escape_table{'_'}!gx;
+		}
+		$text .= $cur_token->[1];
+	}
+	return $text;
+}
+
+
+sub _DoAnchors {
+#
+# Turn Markdown link shortcuts into XHTML  tags.
+#
+	my $text = shift;
+
+	#
+	# First, handle reference-style links: [link text] [id]
+	#
+	$text =~ s{
+		(					# wrap whole match in $1
+		  \[
+		    ($g_nested_brackets)	# link text = $2
+		  \]
+
+		  [ ]?				# one optional space
+		  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+		  \[
+		    (.*?)		# id = $3
+		  \]
+		)
+	}{
+		my $result;
+		my $whole_match = $1;
+		my $link_text   = $2;
+		my $link_id     = lc $3;
+
+		if ($link_id eq "") {
+			$link_id = lc $link_text;     # for shortcut links like [this][].
+		}
+
+		if (defined $g_urls{$link_id}) {
+			my $url = $g_urls{$link_id};
+			$url =~ s! \* !$g_escape_table{'*'}!gx;		# We've got to encode these to avoid
+			$url =~ s!  _ !$g_escape_table{'_'}!gx;		# conflicting with italics/bold.
+			$result = "?	# href = $3
+		  	[ \t]*
+			(			# $4
+			  (['"])	# quote char = $5
+			  (.*?)		# Title = $6
+			  \5		# matching quote
+  		  	  [ \t]*	# ignore any spaces/tabs between closing quote and )
+			)?			# title is optional
+		  \)
+		)
+	}{
+		my $result;
+		my $whole_match = $1;
+		my $link_text   = $2;
+		my $url	  		= $3;
+		my $title		= $6;
+
+		$url =~ s! \* !$g_escape_table{'*'}!gx;		# We've got to encode these to avoid
+		$url =~ s!  _ !$g_escape_table{'_'}!gx;		# conflicting with italics/bold.
+		$result = " tags.
+#
+	my $text = shift;
+
+	#
+	# First, handle reference-style labeled images: ![alt text][id]
+	#
+	$text =~ s{
+		(				# wrap whole match in $1
+		  !\[
+		    (.*?)		# alt text = $2
+		  \]
+
+		  [ ]?				# one optional space
+		  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+		  \[
+		    (.*?)		# id = $3
+		  \]
+
+		)
+	}{
+		my $result;
+		my $whole_match = $1;
+		my $alt_text    = $2;
+		my $link_id     = lc $3;
+
+		if ($link_id eq "") {
+			$link_id = lc $alt_text;     # for shortcut links like ![this][].
+		}
+
+		$alt_text =~ s/"/"/g;
+		if (defined $g_urls{$link_id}) {
+			my $url = $g_urls{$link_id};
+			$url =~ s! \* !$g_escape_table{'*'}!gx;		# We've got to encode these to avoid
+			$url =~ s!  _ !$g_escape_table{'_'}!gx;		# conflicting with italics/bold.
+			$result = "\"$alt_text\"";?	# src url = $3
+		  	[ \t]*
+			(			# $4
+			  (['"])	# quote char = $5
+			  (.*?)		# title = $6
+			  \5		# matching quote
+			  [ \t]*
+			)?			# title is optional
+		  \)
+		)
+	}{
+		my $result;
+		my $whole_match = $1;
+		my $alt_text    = $2;
+		my $url	  		= $3;
+		my $title		= '';
+		if (defined($6)) {
+			$title		= $6;
+		}
+
+		$alt_text =~ s/"/"/g;
+		$title    =~ s/"/"/g;
+		$url =~ s! \* !$g_escape_table{'*'}!gx;		# We've got to encode these to avoid
+		$url =~ s!  _ !$g_escape_table{'_'}!gx;		# conflicting with italics/bold.
+		$result = "\"$alt_text\"";"  .  _RunSpanGamut($1)  .  "\n\n";
+	}egmx;
+
+	$text =~ s{ ^(.+)[ \t]*\n-+[ \t]*\n+ }{
+		"
    "  .  _RunSpanGamut($1)  .  "
    \n\n";
+	}egmx;
+
+
+	# atx-style headers:
+	#	# Header 1
+	#	## Header 2
+	#	## Header 2 with closing hashes ##
+	#	...
+	#	###### Header 6
+	#
+	$text =~ s{
+			^(\#{1,6})	# $1 = string of #'s
+			[ \t]*
+			(.+?)		# $2 = Header text
+			[ \t]*
+			\#*			# optional closing #'s (not counted)
+			\n+
+		}{
+			my $h_level = length($1);
+			""  .  _RunSpanGamut($2)  .  "\n\n";
+		}egmx;
+
+	return $text;
+}
+
+
+sub _DoLists {
+#
+# Form HTML ordered (numbered) and unordered (bulleted) lists.
+#
+	my $text = shift;
+	my $less_than_tab = $g_tab_width - 1;
+
+	# Re-usable patterns to match list item bullets and number markers:
+	my $marker_ul  = qr/[*+-]/;
+	my $marker_ol  = qr/\d+[.]/;
+	my $marker_any = qr/(?:$marker_ul|$marker_ol)/;
+
+	# Re-usable pattern to match any entirel ul or ol list:
+	my $whole_list = qr{
+		(								# $1 = whole list
+		  (								# $2
+			[ ]{0,$less_than_tab}
+			(${marker_any})				# $3 = first list item marker
+			[ \t]+
+		  )
+		  (?s:.+?)
+		  (								# $4
+			  \z
+			|
+			  \n{2,}
+			  (?=\S)
+			  (?!						# Negative lookahead for another list item marker
+				[ \t]*
+				${marker_any}[ \t]+
+			  )
+		  )
+		)
+	}mx;
+
+	# We use a different prefix before nested lists than top-level lists.
+	# See extended comment in _ProcessListItems().
+	#
+	# Note: There's a bit of duplication here. My original implementation
+	# created a scalar regex pattern as the conditional result of the test on
+	# $g_list_level, and then only ran the $text =~ s{...}{...}egmx
+	# substitution once, using the scalar as the pattern. This worked,
+	# everywhere except when running under MT on my hosting account at Pair
+	# Networks. There, this caused all rebuilds to be killed by the reaper (or
+	# perhaps they crashed, but that seems incredibly unlikely given that the
+	# same script on the same server ran fine *except* under MT. I've spent
+	# more time trying to figure out why this is happening than I'd like to
+	# admit. My only guess, backed up by the fact that this workaround works,
+	# is that Perl optimizes the substition when it can figure out that the
+	# pattern will never change, and when this optimization isn't on, we run
+	# afoul of the reaper. Thus, the slightly redundant code that uses two
+	# static s/// patterns rather than one conditional pattern.
+
+	if ($g_list_level) {
+		$text =~ s{
+				^
+				$whole_list
+			}{
+				my $list = $1;
+				my $list_type = ($3 =~ m/$marker_ul/) ? "ul" : "ol";
+
+				# Turn double returns into triple returns, so that we can make a
+				# paragraph for the last item in a list, if necessary:
+				$list =~ s/\n{2,}/\n\n\n/g;
+				my $result = _ProcessListItems($list, $marker_any);
+
+				# Trim any trailing whitespace, to put the closing ``
+				# up on the preceding line, to get it past the current stupid
+				# HTML block parser. This is a hack to work around the terrible
+				# hack that is the HTML block parser.
+				$result =~ s{\s+$}{};
+				$result = "<$list_type>" . $result . "\n";
+				$result;
+			}egmx;
+	}
+	else {
+		$text =~ s{
+				(?:(?<=\n\n)|\A\n?)
+				$whole_list
+			}{
+				my $list = $1;
+				my $list_type = ($3 =~ m/$marker_ul/) ? "ul" : "ol";
+				# Turn double returns into triple returns, so that we can make a
+				# paragraph for the last item in a list, if necessary:
+				$list =~ s/\n{2,}/\n\n\n/g;
+				my $result = _ProcessListItems($list, $marker_any);
+				$result = "<$list_type>\n" . $result . "\n";
+				$result;
+			}egmx;
+	}
+
+
+	return $text;
+}
+
+
+sub _ProcessListItems {
+#
+#	Process the contents of a single ordered or unordered list, splitting it
+#	into individual list items.
+#
+
+	my $list_str = shift;
+	my $marker_any = shift;
+
+
+	# The $g_list_level global keeps track of when we're inside a list.
+	# Each time we enter a list, we increment it; when we leave a list,
+	# we decrement. If it's zero, we're not in a list anymore.
+	#
+	# We do this because when we're not inside a list, we want to treat
+	# something like this:
+	#
+	#		I recommend upgrading to version
+	#		8. Oops, now this line is treated
+	#		as a sub-list.
+	#
+	# As a single paragraph, despite the fact that the second line starts
+	# with a digit-period-space sequence.
+	#
+	# Whereas when we're inside a list (or sub-list), that line will be
+	# treated as the start of a sub-list. What a kludge, huh? This is
+	# an aspect of Markdown's syntax that's hard to parse perfectly
+	# without resorting to mind-reading. Perhaps the solution is to
+	# change the syntax rules such that sub-lists must start with a
+	# starting cardinal number; e.g. "1." or "a.".
+
+	$g_list_level++;
+
+	# trim trailing blank lines:
+	$list_str =~ s/\n{2,}\z/\n/;
+
+
+	$list_str =~ s{
+		(\n)?							# leading line = $1
+		(^[ \t]*)						# leading whitespace = $2
+		($marker_any) [ \t]+			# list marker = $3
+		((?s:.+?)						# list item text   = $4
+		(\n{1,2}))
+		(?= \n* (\z | \2 ($marker_any) [ \t]+))
+	}{
+		my $item = $4;
+		my $leading_line = $1;
+		my $leading_space = $2;
+
+		if ($leading_line or ($item =~ m/\n{2,}/)) {
+			$item = _RunBlockGamut(_Outdent($item));
+		}
+		else {
+			# Recursion for sub-lists:
+			$item = _DoLists(_Outdent($item));
+			chomp $item;
+			$item = _RunSpanGamut($item);
+		}
+
+		"
  • " . $item . "
    • \n";
+	}egmx;
+
+	$g_list_level--;
+	return $list_str;
+}
+
+
+
+sub _DoCodeBlocks {
+#
+#	Process Markdown `
    ` blocks.
+#	
+
+	my $text = shift;
+
+	$text =~ s{
+			(?:\n\n|\A)
+			(	            # $1 = the code block -- one or more lines, starting with a space/tab
+			  (?:
+			    (?:[ ]{$g_tab_width} | \t)  # Lines must start with a tab or a tab-width of spaces
+			    .*\n+
+			  )+
+			)
+			((?=^[ ]{0,$g_tab_width}\S)|\Z)	# Lookahead for non-space at line-start, or end of doc
+		}{
+			my $codeblock = $1;
+			my $result; # return value
+
+			$codeblock = _EncodeCode(_Outdent($codeblock));
+			$codeblock = _Detab($codeblock);
+			$codeblock =~ s/\A\n+//; # trim leading newlines
+			$codeblock =~ s/\n+\z//; # trim trailing newlines
+
+			$result = "\n\n
    " . $codeblock . "\n
    \n\n";
+
+			$result;
+		}egmx;
+
+	return $text;
+}
+
+
+sub _DoCodeSpans {
+#
+# 	*	Backtick quotes are used for  spans.
+# 
+# 	*	You can use multiple backticks as the delimiters if you want to
+# 		include literal backticks in the code span. So, this input:
+#     
+#         Just type ``foo `bar` baz`` at the prompt.
+#     
+#     	Will translate to:
+#     
+#         
    Just type foo `bar` baz at the prompt.
    
+#     
+#		There's no arbitrary limit to the number of backticks you
+#		can use as delimters. If you need three consecutive backticks
+#		in your code, use four for delimiters, etc.
+#
+#	*	You can use spaces to get literal backticks at the edges:
+#     
+#         ... type `` `bar` `` ...
+#     
+#     	Turns to:
+#     
+#         ... type `bar` ...
+#
+
+	my $text = shift;
+
+	$text =~ s@
+			(?$c    ";
+		@egsx;
+
+	return $text;
+}
+
+
+sub _EncodeCode {
+#
+# Encode/escape certain characters inside Markdown code runs.
+# The point is that in code, these characters are literals,
+# and lose their special Markdown meanings.
+#
+    local $_ = shift;
+
+	# Encode all ampersands; HTML entities are not
+	# entities within a Markdown code span.
+	s/&/&/g;
+
+	# Encode $'s, but only if we're running under Blosxom.
+	# (Blosxom interpolates Perl variables in article bodies.)
+	{
+		no warnings 'once';
+    	if (defined($blosxom::version)) {
+    		s/\$/$/g;	
+    	}
+    }
+
+
+	# Do the angle bracket song and dance:
+	s! <  !<!gx;
+	s! >  !>!gx;
+
+	# Now, escape characters that are magic in Markdown:
+	s! \* !$g_escape_table{'*'}!gx;
+	s! _  !$g_escape_table{'_'}!gx;
+	s! {  !$g_escape_table{'{'}!gx;
+	s! }  !$g_escape_table{'}'}!gx;
+	s! \[ !$g_escape_table{'['}!gx;
+	s! \] !$g_escape_table{']'}!gx;
+	s! \\ !$g_escape_table{'\\'}!gx;
+
+	return $_;
+}
+
+
+sub _DoItalicsAndBold {
+	my $text = shift;
+
+	#  must go first:
+	$text =~ s{ (\*\*|__) (?=\S) (.+?[*_]*) (?<=\S) \1 }
+		{$2}gsx;
+
+	$text =~ s{ (\*|_) (?=\S) (.+?) (?<=\S) \1 }
+		{$2}gsx;
+
+	return $text;
+}
+
+
+sub _DoBlockQuotes {
+	my $text = shift;
+
+	$text =~ s{
+		  (								# Wrap whole match in $1
+			(
+			  ^[ \t]*>[ \t]?			# '>' at the start of a line
+			    .+\n					# rest of the first line
+			  (.+\n)*					# subsequent consecutive lines
+			  \n*						# blanks
+			)+
+		  )
+		}{
+			my $bq = $1;
+			$bq =~ s/^[ \t]*>[ \t]?//gm;	# trim one level of quoting
+			$bq =~ s/^[ \t]+$//mg;			# trim whitespace-only lines
+			$bq = _RunBlockGamut($bq);		# recurse
+
+			$bq =~ s/^/  /g;
+			# These leading spaces screw with 
     content, so we need to fix that:
+			$bq =~ s{
+					(\s*
    .+?
    )
+				}{
+					my $pre = $1;
+					$pre =~ s/^  //mg;
+					$pre;
+				}egsx;
+
+			"
    \n$bq\n
    \n\n";
+		}egmx;
+
+
+	return $text;
+}
+
+
+sub _FormParagraphs {
+#
+#	Params:
+#		$text - string to process with html 
     tags
+#
+	my $text = shift;
+
+	# Strip leading and trailing lines:
+	$text =~ s/\A\n+//;
+	$text =~ s/\n+\z//;
+
+	my @grafs = split(/\n{2,}/, $text);
+
+	#
+	# Wrap 
     tags.
+	#
+	foreach (@grafs) {
+		unless (defined( $g_html_blocks{$_} )) {
+			$_ = _RunSpanGamut($_);
+			s/^([ \t]*)/
    /;
+			$_ .= "
    ";
+		}
+	}
+
+	#
+	# Unhashify HTML blocks
+	#
+# 	foreach my $graf (@grafs) {
+# 		my $block = $g_html_blocks{$graf};
+# 		if (defined $block) {
+# 			$graf = $block;
+# 		}
+# 	}
+
+	foreach my $graf (@grafs) {
+		# Modify elements of @grafs in-place...
+		my $block = $g_html_blocks{$graf};
+		if (defined $block) {
+			$graf = $block;
+			if ($block =~ m{
+							\A
+							(							# $1 = 
     tag
+							  
    ]*
+							  \b
+							  markdown\s*=\s*  (['"])	#	$2 = attr quote char
+							  1
+							  \2
+							  [^>]*
+							  >
+							)
+							(							# $3 = contents
+							.*
+							)
+							(
    )					# $4 = closing tag
+							\z
+
+							}xms
+				) {
+				my ($div_open, $div_content, $div_close) = ($1, $3, $4);
+
+				# We can't call Markdown(), because that resets the hash;
+				# that initialization code should be pulled into its own sub, though.
+				$div_content = _HashHTMLBlocks($div_content);
+				$div_content = _StripLinkDefinitions($div_content);
+				$div_content = _RunBlockGamut($div_content);
+				$div_content = _UnescapeSpecialChars($div_content);
+
+				$div_open =~ s{\smarkdown\s*=\s*(['"]).+?\1}{}ms;
+
+				$graf = $div_open . "\n" . $div_content . "\n" . $div_close;
+			}
+		}
+	}
+
+
+	return join "\n\n", @grafs;
+}
+
+
+sub _EncodeAmpsAndAngles {
+# Smart processing for ampersands and angle brackets that need to be encoded.
+
+	my $text = shift;
+
+	# Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
+	#   http://bumppo.net/projects/amputator/
+ 	$text =~ s/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/&/g;
+
+	# Encode naked <'s
+ 	$text =~ s{<(?![a-z/?\$!])}{<}gi;
+
+	return $text;
+}
+
+
+sub _EncodeBackslashEscapes {
+#
+#   Parameter:  String.
+#   Returns:    The string, with after processing the following backslash
+#               escape sequences.
+#
+    local $_ = shift;
+
+    s! \\\\  !$g_escape_table{'\\'}!gx;		# Must process escaped backslashes first.
+    s! \\`   !$g_escape_table{'`'}!gx;
+    s! \\\*  !$g_escape_table{'*'}!gx;
+    s! \\_   !$g_escape_table{'_'}!gx;
+    s! \\\{  !$g_escape_table{'{'}!gx;
+    s! \\\}  !$g_escape_table{'}'}!gx;
+    s! \\\[  !$g_escape_table{'['}!gx;
+    s! \\\]  !$g_escape_table{']'}!gx;
+    s! \\\(  !$g_escape_table{'('}!gx;
+    s! \\\)  !$g_escape_table{')'}!gx;
+    s! \\>   !$g_escape_table{'>'}!gx;
+    s! \\\#  !$g_escape_table{'#'}!gx;
+    s! \\\+  !$g_escape_table{'+'}!gx;
+    s! \\\-  !$g_escape_table{'-'}!gx;
+    s! \\\.  !$g_escape_table{'.'}!gx;
+    s{ \\!  }{$g_escape_table{'!'}}gx;
+
+    return $_;
+}
+
+
+sub _DoAutoLinks {
+	my $text = shift;
+
+	$text =~ s{<((https?|ftp|dict):[^'">\s]+)>}{    $1}gi;
+
+	# Email addresses: 
+	$text =~ s{
+		<
+        (?:mailto:)?
+		(
+			[-.\w]+
+			\@
+			[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
+		)
+		>
+	}{
+		_EncodeEmailAddress( _UnescapeSpecialChars($1) );
+	}egix;
+
+	return $text;
+}
+
+
+sub _EncodeEmailAddress {
+#
+#	Input: an email address, e.g. "foo@example.com"
+#
+#	Output: the email address as a mailto link, with each character
+#		of the address encoded as either a decimal or hex entity, in
+#		the hopes of foiling most address harvesting spam bots. E.g.:
+#
+#	  foo
+#       @example.com
+#
+#	Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
+#	mailing list: 
+#
+
+	my $addr = shift;
+
+	srand;
+	my @encode = (
+		sub { '&#' .                 ord(shift)   . ';' },
+		sub { '&#x' . sprintf( "%X", ord(shift) ) . ';' },
+		sub {                            shift          },
+	);
+
+	$addr = "mailto:" . $addr;
+
+	$addr =~ s{(.)}{
+		my $char = $1;
+		if ( $char eq '@' ) {
+			# this *must* be encoded. I insist.
+			$char = $encode[int rand 1]->($char);
+		} elsif ( $char ne ':' ) {
+			# leave ':' alone (to spot mailto: later)
+			my $r = rand;
+			# roughly 10% raw, 45% hex, 45% dec
+			$char = (
+				$r > .9   ?  $encode[2]->($char)  :
+				$r < .45  ?  $encode[1]->($char)  :
+							 $encode[0]->($char)
+			);
+		}
+		$char;
+	}gex;
+
+	$addr = qq{$addr};
+	$addr =~ s{">.+?:}{">}; # strip the mailto: from the visible part
+
+	return $addr;
+}
+
+
+sub _UnescapeSpecialChars {
+#
+# Swap back in all the special characters we've hidden.
+#
+	my $text = shift;
+
+	while( my($char, $hash) = each(%g_escape_table) ) {
+		$text =~ s/$hash/$char/g;
+	}
+    return $text;
+}
+
+
+sub _TokenizeHTML {
+#
+#   Parameter:  String containing HTML markup.
+#   Returns:    Reference to an array of the tokens comprising the input
+#               string. Each token is either a tag (possibly with nested,
+#               tags contained therein, such as , or a
+#               run of text between tags. Each element of the array is a
+#               two-element array; the first is either 'tag' or 'text';
+#               the second is the actual value.
+#
+#
+#   Derived from the _tokenize() subroutine from Brad Choate's MTRegex plugin.
+#       
+#
+
+    my $str = shift;
+    my $pos = 0;
+    my $len = length $str;
+    my @tokens;
+
+    my $depth = 6;
+    my $nested_tags = join('|', ('(?:<[a-z/!$](?:[^<>]') x $depth) . (')*>)' x  $depth);
+    my $match = qr/(?s:  ) |  # comment
+                   (?s: <\? .*? \?> ) |              # processing instruction
+                   $nested_tags/ix;                   # nested tags
+
+    while ($str =~ m/($match)/g) {
+        my $whole_tag = $1;
+        my $sec_start = pos $str;
+        my $tag_start = $sec_start - length $whole_tag;
+        if ($pos < $tag_start) {
+            push @tokens, ['text', substr($str, $pos, $tag_start - $pos)];
+        }
+        push @tokens, ['tag', $whole_tag];
+        $pos = pos $str;
+    }
+    push @tokens, ['text', substr($str, $pos, $len - $pos)] if $pos < $len;
+
+    return \@tokens;
+}
+
+
+sub _Outdent {
+#
+# Remove one level of line-leading tabs or spaces
+#
+	my $text = shift;
+
+	$text =~ s/^(\t|[ ]{1,$g_tab_width})//gm;
+	return $text;
+}
+
+
+sub _Detab {
+#
+# Cribbed from a post by Bart Lateur:
+# 
+#
+	my $text = shift;
+
+	$text =~ s{(.*?)\t}{$1.(' ' x ($g_tab_width - length($1) % $g_tab_width))}ge;
+	return $text;
+}
+
+
+1;
+
+__END__
+
+
+=pod
+
+=head1 NAME
+
+B
+
+
+=head1 SYNOPSIS
+
+B [ B<--html4tags> ] [ B<--version> ] [ B<-shortversion> ]
+    [ I ... ]
+
+
+=head1 DESCRIPTION
+
+Markdown is a text-to-HTML filter; it translates an easy-to-read /
+easy-to-write structured text format into HTML. Markdown's text format
+is most similar to that of plain text email, and supports features such
+as headers, *emphasis*, code blocks, blockquotes, and links.
+
+Markdown's syntax is designed not as a generic markup language, but
+specifically to serve as a front-end to (X)HTML. You can  use span-level
+HTML tags anywhere in a Markdown document, and you can use block level
+HTML tags (like 
     and 
     as well).
+
+For more information about Markdown's syntax, see:
+
+    http://daringfireball.net/projects/markdown/
+
+
+=head1 OPTIONS
+
+Use "--" to end switch parsing. For example, to open a file named "-z", use:
+
+	Markdown.pl -- -z
+
+=over 4
+
+
+=item B<--html4tags>
+
+Use HTML 4 style for empty element tags, e.g.:
+
+    
    
+
+instead of Markdown's default XHTML style tags, e.g.:
+
+    
    
+
+
+=item B<-v>, B<--version>
+
+Display Markdown's version number and copyright information.
+
+
+=item B<-s>, B<--shortversion>
+
+Display the short-form version number.
+
+
+=back
+
+
+
+=head1 BUGS
+
+To file bug reports or feature requests (other than topics listed in the
+Caveats section above) please send email to:
+
+    support@daringfireball.net
+
+Please include with your report: (1) the example input; (2) the output
+you expected; (3) the output Markdown actually produced.
+
+
+=head1 VERSION HISTORY
+
+See the readme file for detailed release notes for this version.
+
+1.0.2b7
+
+	+	Changed shebang line from "/usr/bin/perl" to "/usr/bin/env perl"
+	
+	+	Now only trim trailing newlines from code blocks, instead of trimming
+		all trailing whitespace characters.
+
+
+1.0.2b6 - Mon 03 Apr 2006
+
+	+	Fixed bad performance bug in new `Text::Balanced`-based block-level parser.
+
+
+1.0.2b5 - Thu 08 Dec 2005
+
+	+	Fixed bug where this:
+	
+			[text](http://m.com "title" )
+			
+		wasn't working as expected, because the parser wasn't allowing for spaces
+		before the closing paren.
+
+
+1.0.2b4 - Thu 08 Sep 2005
+
+	+	Filthy hack to support markdown='1' in div tags, because I need it
+		to write today's fireball.
+	
+	+	First crack at a new, smarter, block-level HTML parser.
+
+1.0.2b3 - Thu 28 Apr 2005
+
+	+	_DoAutoLinks() now supports the 'dict://' URL scheme.
+
+	+	PHP- and ASP-style processor instructions are now protected as
+		raw HTML blocks.
+
+			
+			<% ... %>
+
+	+	Workarounds for regressions introduced with fix for "backticks within
+		tags" bug in 1.0.2b1. The fix is to allow `...` to be turned into
+		... within an HTML tag attribute, and then to turn
+		these spurious `` tags back into literal backtick characters
+		in _EscapeSpecialCharsWithinTagAttributes().
+
+		The regression was caused because in the fix, we moved
+		_EscapeSpecialCharsWithinTagAttributes() ahead of _DoCodeSpans()
+		in _RunSpanGamut(), but that's no good. We need to process code
+		spans first, otherwise we can get tripped up by something like this:
+
+			``
+
+
+1.0.2b2 - 20 Mar 2005
+
+	+	Fix for nested sub-lists in list-paragraph mode. Previously we got
+		a spurious extra level of `
    ` tags for something like this:
+
+			*	this
+
+				*	sub
+
+				that
+
+	+	Experimental support for [this] as a synonym for [this][].
+		(Note to self: No test yet for this.)
+		Be sure to test, e.g.: [permutations of this sort of [thing][].]
+
+
+1.0.2b1 - 28  Feb 2005
+
+	+	Fix for backticks within HTML tag: like this
+
+	+	Fix for escaped backticks still triggering code spans:
+
+			There are two raw backticks here: \` and here: \`, not a code span
+
+1.0.1 - 14 Dec 2004
+
+1.0 - 28 Aug 2004
+
+
+=head1 AUTHOR
+
+    John Gruber
+    http://daringfireball.net
+
+    PHP port and other contributions by Michel Fortin
+    http://michelf.com
+
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright (c) 2003-2005 John Gruber   
+   
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name "Markdown" nor the names of its contributors may
+  be used to endorse or promote products derived from this software
+  without specific prior written permission.
+
+This software is provided by the copyright holders and contributors "as
+is" and any express or implied warranties, including, but not limited
+to, the implied warranties of merchantability and fitness for a
+particular purpose are disclaimed. In no event shall the copyright owner
+or contributors be liable for any direct, indirect, incidental, special,
+exemplary, or consequential damages (including, but not limited to,
+procurement of substitute goods or services; loss of use, data, or
+profits; or business interruption) however caused and on any theory of
+liability, whether in contract, strict liability, or tort (including
+negligence or otherwise) arising in any way out of the use of this
+software, even if advised of the possibility of such damage.
+
+=cut
diff --git a/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/readme.txt b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/readme.txt
new file mode 100644
index 0000000000..9e73e56c4d
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/perlMarkdown/readme.txt
@@ -0,0 +1,13 @@
+Reference Implementation
+------------------------
+
+This directory contains John Gruber's original Perl implementation of Markdown.  Smart diff programs like Araxis Merge will be able to match up this file with markdown.pl.
+
+A little tweaking helps.  In markdown.pl:
+
+  - replace `#` with `//`
+  - replace `$text` with `text`
+
+Be sure to ignore whitespace and line endings.
+
+Note: This release of Showdown is based on `markdown1.0.2b7.pl`, but uses the HTML parser from `markdown1.0.2b2.pl`.
diff --git a/node_modules/node-markdown/lib/vendor/showdown/readme.txt b/node_modules/node-markdown/lib/vendor/showdown/readme.txt
new file mode 100644
index 0000000000..4b0d96107f
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/readme.txt
@@ -0,0 +1,156 @@
+
+Showdown -- A JavaScript port of Markdown
+=========================================
+
+Showdown Copyright (c) 2007 John Fraser.
+
+
+Original Markdown Copyright (c) 2004-2005 John Gruber
+
+
+Redistributable under a BSD-style open source license.
+See license.txt for more information.
+
+
+What's it for?
+--------------
+
+Developers can use Showdown to:
+
+ * Add in-browser preview to existing Markdown apps
+
+    Showdown's output is (almost always) identical to
+    markdown.pl's, so the server can reproduce exactly
+    the output that the user saw.  (See below for
+    exceptions.)
+
+ * Add Markdown input to programs that don't support it
+
+    Any app that accepts HTML input can now be made to speak
+    Markdown by modifying the input pages's HTML.  If your
+    application lets users edit documents again later,
+    then they won't have access to the original Markdown
+    text.  But this should be good enough for many
+    uses -- and you can do it with just a two-line
+    `onsubmit` function!
+
+ * Add Markdown input to closed-source web apps
+
+    You can write bookmarklets or userscripts to extend
+    any standard textarea on the web so that it accepts
+    Markdown instead of HTML.  With a little more hacking,
+    the same can probably be done with  many rich edit
+    controls.
+
+ * Build new web apps from scratch
+
+    A Showdown front-end can send back text in Markdown,
+    HTML or both, so you can trade bandwidth for server
+    load to reduce your cost of operation.  If your app
+    requires JavaScript, you won't need to do any
+    Markdown processing on the server at all.  (For most
+    uses, you'll still need to sanitize the HTML before
+    showing it to other users -- but you'd need to do
+    that anyway if you're allowing raw HTML in your
+    Markdown.)
+
+
+Browser Compatibility
+---------------------
+
+Showdown has been tested successfully with:
+
+ - Firefox 1.5 and 2.0
+ - Internet Explorer 6 and 7
+ - Safari 2.0.4
+ - Opera 8.54 and 9.10
+ - Netscape 8.1.2
+ - Konqueror 3.5.4
+
+In theory, Showdown will work in any browser that supports ECMA 262 3rd Edition (JavaScript 1.5).  The converter itself might even work in things that aren't web browsers, like Acrobat.  No promises.
+
+
+Known Differences in Output
+---------------------------
+
+In most cases, Showdown's output is identical to that of Perl Markdown v1.0.2b7.  What follows is a list of all known deviations.  Please email me if you find more.
+
+
+ *  This release uses the HTML parser from Markdown 1.0.2b2,
+    which means it fails `Inline HTML (Advanced).text` from
+    the Markdown test suite:
+
+        
    
+        
    
+        unindented == broken
+        
    
+        
    
+
+
+ *  Showdown doesn't support the markdown="1" attribute:
+
+        
    
+             Markdown does *not* work in here.
+        
    
+
+    This is half laziness on my part and half stubbornness.
+    Markdown is smart enough to process the contents of span-
+    level tags without screwing things up; shouldn't it be
+    able to do the same inside block elements?  Let's find a
+    way to make markdown="1" the default.
+
+
+ *  You can only nest square brackets in link titles to a
+    depth of two levels:
+
+        [[fine]](http://www.attacklab.net/)
+        [[[broken]]](http://www.attacklab.net/)
+
+    If you need more, you can escape them with backslashes.
+
+
+ *  When sublists have paragraphs, Showdown produces equivalent
+    HTML with a slightly different arrangement of newlines:
+
+        + item
+
+             - subitem
+
+               The HTML has a superfluous newline before this
+               paragraph.
+
+             - subitem
+
+               The HTML here is unchanged.
+
+             - subitem
+
+               The HTML is missing a newline after this
+               list subitem.
+
+
+
+ *  Markdown.pl creates empty title attributes for
+    inline-style images:
+
+        Here's an empty title on an inline-style
+        ![image](http://w3.org/Icons/valid-xhtml10).
+
+    I tried to replicate this to clean up my diffs during
+    testing, but I went too far: now Showdown also makes
+    empty titles for reference-style images:
+
+        Showdown  makes an empty title for
+        reference-style ![images][] too.
+
+        [images]: http://w3.org/Icons/valid-xhtml10
+
+
+ *  With crazy input, Markdown will mistakenly put
+    `` or `` tags in URLs:
+
+            
+           improbable URL
+        
+
+    Showdown won't.  But still, don't do that.
diff --git a/node_modules/node-markdown/lib/vendor/showdown/src/showdown.js b/node_modules/node-markdown/lib/vendor/showdown/src/showdown.js
new file mode 100644
index 0000000000..35c6fb00d5
--- /dev/null
+++ b/node_modules/node-markdown/lib/vendor/showdown/src/showdown.js
@@ -0,0 +1,1299 @@
+// Line 70, 78 updated to be compatible with node.js module system
+// 2010 Andris Reinman
+
+//
+// showdown.js -- A javascript port of Markdown.
+//
+// Copyright (c) 2007 John Fraser.
+//
+// Original Markdown Copyright (c) 2004-2005 John Gruber
+//   
+//
+// Redistributable under a BSD-style open source license.
+// See license.txt for more information.
+//
+// The full source distribution is at:
+//
+//				A A L
+//				T C A
+//				T K B
+//
+//   
+//
+
+//
+// Wherever possible, Showdown is a straight, line-by-line port
+// of the Perl version of Markdown.
+//
+// This is not a normal parser design; it's basically just a
+// series of string substitutions.  It's hard to read and
+// maintain this way,  but keeping Showdown close to the original
+// design makes it easier to port new features.
+//
+// More importantly, Showdown behaves like markdown.pl in most
+// edge cases.  So web applications can do client-side preview
+// in Javascript, and then build identical HTML on the server.
+//
+// This port needs the new RegExp functionality of ECMA 262,
+// 3rd Edition (i.e. Javascript 1.5).  Most modern web browsers
+// should do fine.  Even with the new regular expression features,
+// We do a lot of work to emulate Perl's regex functionality.
+// The tricky changes in this file mostly have the "attacklab:"
+// label.  Major or self-explanatory changes don't.
+//
+// Smart diff tools like Araxis Merge will be able to match up
+// this file with markdown.pl in a useful way.  A little tweaking
+// helps: in a copy of markdown.pl, replace "#" with "//" and
+// replace "$text" with "text".  Be sure to ignore whitespace
+// and line endings.
+//
+
+
+//
+// Showdown usage:
+//
+//   var text = "Markdown *rocks*.";
+//
+//   var converter = new Showdown.converter();
+//   var html = converter.makeHtml(text);
+//
+//   alert(html);
+//
+// Note: move the sample code to the bottom of this
+// file before uncommenting it.
+//
+
+
+//
+// Showdown namespace
+//
+this.Showdown = {};
+
+//
+// converter
+//
+// Wraps all "globals" so that the only thing
+// exposed is makeHtml().
+//
+this.Showdown.converter = function() {
+
+//
+// Globals:
+//
+
+// Global hashes, used by various utility routines
+var g_urls;
+var g_titles;
+var g_html_blocks;
+
+// Used to track when we're inside an ordered or unordered list
+// (see _ProcessListItems() for details):
+var g_list_level = 0;
+
+
+this.makeHtml = function(text) {
+//
+// Main function. The order in which other subs are called here is
+// essential. Link and image substitutions need to happen before
+// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the 
+// and  tags get encoded.
+//
+
+	// Clear the global hashes. If we don't clear these, you get conflicts
+	// from other articles when generating a page which contains more than
+	// one article (e.g. an index page that shows the N most recent
+	// articles):
+	g_urls = new Array();
+	g_titles = new Array();
+	g_html_blocks = new Array();
+
+	// attacklab: Replace ~ with ~T
+	// This lets us use tilde as an escape char to avoid md5 hashes
+	// The choice of character is arbitray; anything that isn't
+    // magic in Markdown will work.
+	text = text.replace(/~/g,"~T");
+
+	// attacklab: Replace $ with ~D
+	// RegExp interprets $ as a special character
+	// when it's in a replacement string
+	text = text.replace(/\$/g,"~D");
+
+	// Standardize line endings
+	text = text.replace(/\r\n/g,"\n"); // DOS to Unix
+	text = text.replace(/\r/g,"\n"); // Mac to Unix
+
+	// Make sure text begins and ends with a couple of newlines:
+	text = "\n\n" + text + "\n\n";
+
+	// Convert all tabs to spaces.
+	text = _Detab(text);
+
+	// Strip any lines consisting only of spaces and tabs.
+	// This makes subsequent regexen easier to write, because we can
+	// match consecutive blank lines with /\n+/ instead of something
+	// contorted like /[ \t]*\n+/ .
+	text = text.replace(/^[ \t]+$/mg,"");
+
+	// Turn block-level HTML blocks into hash entries
+	text = _HashHTMLBlocks(text);
+
+	// Strip link definitions, store in hashes.
+	text = _StripLinkDefinitions(text);
+
+	text = _RunBlockGamut(text);
+
+	text = _UnescapeSpecialChars(text);
+
+	// attacklab: Restore dollar signs
+	text = text.replace(/~D/g,"$$");
+
+	// attacklab: Restore tildes
+	text = text.replace(/~T/g,"~");
+
+	return text;
+}
+
+
+var _StripLinkDefinitions = function(text) {
+//
+// Strips link definitions from text, stores the URLs and titles in
+// hash references.
+//
+
+	// Link defs are in the form: ^[id]: url "optional title"
+
+	/*
+		var text = text.replace(/
+				^[ ]{0,3}\[(.+)\]:  // id = $1  attacklab: g_tab_width - 1
+				  [ \t]*
+				  \n?				// maybe *one* newline
+				  [ \t]*
+				?			// url = $2
+				  [ \t]*
+				  \n?				// maybe one newline
+				  [ \t]*
+				(?:
+				  (\n*)				// any lines skipped = $3 attacklab: lookbehind removed
+				  ["(]
+				  (.+?)				// title = $4
+				  [")]
+				  [ \t]*
+				)?					// title is optional
+				(?:\n+|$)
+			  /gm,
+			  function(){...});
+	*/
+	var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,
+		function (wholeMatch,m1,m2,m3,m4) {
+			m1 = m1.toLowerCase();
+			g_urls[m1] = _EncodeAmpsAndAngles(m2);  // Link IDs are case-insensitive
+			if (m3) {
+				// Oops, found blank lines, so it's not a title.
+				// Put back the parenthetical statement we stole.
+				return m3+m4;
+			} else if (m4) {
+				g_titles[m1] = m4.replace(/"/g,""");
+			}
+			
+			// Completely remove the definition from the text
+			return "";
+		}
+	);
+
+	return text;
+}
+
+
+var _HashHTMLBlocks = function(text) {
+	// attacklab: Double up blank lines to reduce lookaround
+	text = text.replace(/\n/g,"\n\n");
+
+	// Hashify HTML blocks:
+	// We only want to do this for block-level HTML tags, such as headers,
+	// lists, and tables. That's because we still want to wrap 
    s around
+	// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+	// phrase emphasis, and spans. The list of tags we're looking for is
+	// hard-coded:
+	var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
+	var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
+
+	// First, look for nested blocks, e.g.:
+	//   
    
+	//     
    
+	//     tags for inner block must be indented.
+	//     
    
+	//   
    
+	//
+	// The outermost tags must start at the left margin for this to match, and
+	// the inner nested divs must be indented.
+	// We need to do this before the next, more liberal match, because the next
+	// match will start at the first `
    ` and stop at the first `
    `.
+
+	// attacklab: This regex can be expensive when it fails.
+	/*
+		var text = text.replace(/
+		(						// save in $1
+			^					// start of line  (with /m)
+			<($block_tags_a)	// start tag = $2
+			\b					// word break
+								// attacklab: hack around khtml/pcre bug...
+			[^\r]*?\n			// any number of lines, minimally matching
+							// the matching end tag
+			[ \t]*				// trailing spaces/tabs
+			(?=\n+)				// followed by a newline
+		)						// attacklab: there are sentinel newlines at end of document
+		/gm,function(){...}};
+	*/
+	text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement);
+
+	//
+	// Now match more liberally, simply from `\n` to `\n`
+	//
+
+	/*
+		var text = text.replace(/
+		(						// save in $1
+			^					// start of line  (with /m)
+			<($block_tags_b)	// start tag = $2
+			\b					// word break
+								// attacklab: hack around khtml/pcre bug...
+			[^\r]*?				// any number of lines, minimally matching
+			.*				// the matching end tag
+			[ \t]*				// trailing spaces/tabs
+			(?=\n+)				// followed by a newline
+		)						// attacklab: there are sentinel newlines at end of document
+		/gm,function(){...}};
+	*/
+	text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement);
+
+	// Special case just for 
    . It was easier to make a special case than
+	// to make the other regex more complicated.  
+
+	/*
+		text = text.replace(/
+		(						// save in $1
+			\n\n				// Starting after a blank line
+			[ ]{0,3}
+			(<(hr)				// start tag = $2
+			\b					// word break
+			([^<>])*?			// 
+			\/?>)				// the matching end tag
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// Special case for standalone HTML comments:
+
+	/*
+		text = text.replace(/
+		(						// save in $1
+			\n\n				// Starting after a blank line
+			[ ]{0,3}			// attacklab: g_tab_width - 1
+			
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(\n\n[ ]{0,3}[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// PHP and ASP-style processor instructions ( and <%...%>)
+
+	/*
+		text = text.replace(/
+		(?:
+			\n\n				// Starting after a blank line
+		)
+		(						// save in $1
+			[ ]{0,3}			// attacklab: g_tab_width - 1
+			(?:
+				<([?%])			// $2
+				[^\r]*?
+				\2>
+			)
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// attacklab: Undo double lines (see comment at top of this function)
+	text = text.replace(/\n\n/g,"\n");
+	return text;
+}
+
+var hashElement = function(wholeMatch,m1) {
+	var blockText = m1;
+
+	// Undo double lines
+	blockText = blockText.replace(/\n\n/g,"\n");
+	blockText = blockText.replace(/^\n/,"");
+	
+	// strip trailing blank lines
+	blockText = blockText.replace(/\n+$/g,"");
+	
+	// Replace the element text with a marker ("~KxK" where x is its key)
+	blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n";
+	
+	return blockText;
+};
+
+var _RunBlockGamut = function(text) {
+//
+// These are all the transformations that form block-level
+// tags like paragraphs, headers, and list items.
+//
+	text = _DoHeaders(text);
+
+	// Do Horizontal Rules:
+	var key = hashBlock("
    ");
+	text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,key);
+	text = text.replace(/^[ ]{0,2}([ ]?\-[ ]?){3,}[ \t]*$/gm,key);
+	text = text.replace(/^[ ]{0,2}([ ]?\_[ ]?){3,}[ \t]*$/gm,key);
+
+	text = _DoLists(text);
+	text = _DoCodeBlocks(text);
+	text = _DoBlockQuotes(text);
+
+	// We already ran _HashHTMLBlocks() before, in Markdown(), but that
+	// was to escape raw HTML in the original Markdown source. This time,
+	// we're escaping the markup we've just created, so that we don't wrap
+	// 
     tags around block-level tags.
+	text = _HashHTMLBlocks(text);
+	text = _FormParagraphs(text);
+
+	return text;
+}
+
+
+var _RunSpanGamut = function(text) {
+//
+// These are all the transformations that occur *within* block-level
+// tags like paragraphs, headers, and list items.
+//
+
+	text = _DoCodeSpans(text);
+	text = _EscapeSpecialCharsWithinTagAttributes(text);
+	text = _EncodeBackslashEscapes(text);
+
+	// Process anchor and image tags. Images must come first,
+	// because ![foo][f] looks like an anchor.
+	text = _DoImages(text);
+	text = _DoAnchors(text);
+
+	// Make links out of things like ``
+	// Must come after _DoAnchors(), because you can use < and >
+	// delimiters in inline links like [this]().
+	text = _DoAutoLinks(text);
+	text = _EncodeAmpsAndAngles(text);
+	text = _DoItalicsAndBold(text);
+
+	// Do hard breaks:
+	text = text.replace(/  +\n/g," 
    \n");
+
+	return text;
+}
+
+var _EscapeSpecialCharsWithinTagAttributes = function(text) {
+//
+// Within tags -- meaning between < and > -- encode [\ ` * _] so they
+// don't conflict with their use in Markdown for code, italics and strong.
+//
+
+	// Build a regex to find HTML tags and comments.  See Friedl's 
+	// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
+	var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|)/gi;
+
+	text = text.replace(regex, function(wholeMatch) {
+		var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`");
+		tag = escapeCharacters(tag,"\\`*_");
+		return tag;
+	});
+
+	return text;
+}
+
+var _DoAnchors = function(text) {
+//
+// Turn Markdown link shortcuts into XHTML      tags.
+//
+	//
+	// First, handle reference-style links: [link text] [id]
+	//
+
+	/*
+		text = text.replace(/
+		(							// wrap whole match in $1
+			\[
+			(
+				(?:
+					\[[^\]]*\]		// allow brackets nested one level
+					|
+					[^\[]			// or anything else
+				)*
+			)
+			\]
+
+			[ ]?					// one optional space
+			(?:\n[ ]*)?				// one optional newline followed by spaces
+
+			\[
+			(.*?)					// id = $3
+			\]
+		)()()()()					// pad remaining backreferences
+		/g,_DoAnchors_callback);
+	*/
+	text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag);
+
+	//
+	// Next, inline-style links: [link text](url "optional title")
+	//
+
+	/*
+		text = text.replace(/
+			(						// wrap whole match in $1
+				\[
+				(
+					(?:
+						\[[^\]]*\]	// allow brackets nested one level
+					|
+					[^\[\]]			// or anything else
+				)
+			)
+			\]
+			\(						// literal paren
+			[ \t]*
+			()						// no id, so leave $3 empty
+			?				// href = $4
+			[ \t]*
+			(						// $5
+				(['"])				// quote char = $6
+				(.*?)				// Title = $7
+				\6					// matching quote
+				[ \t]*				// ignore any spaces/tabs between closing quote and )
+			)?						// title is optional
+			\)
+		)
+		/g,writeAnchorTag);
+	*/
+	text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag);
+
+	//
+	// Last, handle reference-style shortcuts: [link text]
+	// These must come last in case you've also got [link test][1]
+	// or [link test](/foo)
+	//
+
+	/*
+		text = text.replace(/
+		(		 					// wrap whole match in $1
+			\[
+			([^\[\]]+)				// link text = $2; can't contain '[' or ']'
+			\]
+		)()()()()()					// pad rest of backreferences
+		/g, writeAnchorTag);
+	*/
+	text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
+
+	return text;
+}
+
+var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+	if (m7 == undefined) m7 = "";
+	var whole_match = m1;
+	var link_text   = m2;
+	var link_id	 = m3.toLowerCase();
+	var url		= m4;
+	var title	= m7;
+	
+	if (url == "") {
+		if (link_id == "") {
+			// lower-case and turn embedded newlines into spaces
+			link_id = link_text.toLowerCase().replace(/ ?\n/g," ");
+		}
+		url = "#"+link_id;
+		
+		if (g_urls[link_id] != undefined) {
+			url = g_urls[link_id];
+			if (g_titles[link_id] != undefined) {
+				title = g_titles[link_id];
+			}
+		}
+		else {
+			if (whole_match.search(/\(\s*\)$/m)>-1) {
+				// Special case for explicit empty url
+				url = "";
+			} else {
+				return whole_match;
+			}
+		}
+	}	
+	
+	url = escapeCharacters(url,"*_");
+	var result = "";
+	
+	return result;
+}
+
+
+var _DoImages = function(text) {
+//
+// Turn Markdown image shortcuts into  tags.
+//
+
+	//
+	// First, handle reference-style labeled images: ![alt text][id]
+	//
+
+	/*
+		text = text.replace(/
+		(						// wrap whole match in $1
+			!\[
+			(.*?)				// alt text = $2
+			\]
+
+			[ ]?				// one optional space
+			(?:\n[ ]*)?			// one optional newline followed by spaces
+
+			\[
+			(.*?)				// id = $3
+			\]
+		)()()()()				// pad rest of backreferences
+		/g,writeImageTag);
+	*/
+	text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag);
+
+	//
+	// Next, handle inline images:  ![alt text](url "optional title")
+	// Don't forget: encode * and _
+
+	/*
+		text = text.replace(/
+		(						// wrap whole match in $1
+			!\[
+			(.*?)				// alt text = $2
+			\]
+			\s?					// One optional whitespace character
+			\(					// literal paren
+			[ \t]*
+			()					// no id, so leave $3 empty
+			?			// src url = $4
+			[ \t]*
+			(					// $5
+				(['"])			// quote char = $6
+				(.*?)			// title = $7
+				\6				// matching quote
+				[ \t]*
+			)?					// title is optional
+		\)
+		)
+		/g,writeImageTag);
+	*/
+	text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag);
+
+	return text;
+}
+
+var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+	var whole_match = m1;
+	var alt_text   = m2;
+	var link_id	 = m3.toLowerCase();
+	var url		= m4;
+	var title	= m7;
+
+	if (!title) title = "";
+	
+	if (url == "") {
+		if (link_id == "") {
+			// lower-case and turn embedded newlines into spaces
+			link_id = alt_text.toLowerCase().replace(/ ?\n/g," ");
+		}
+		url = "#"+link_id;
+		
+		if (g_urls[link_id] != undefined) {
+			url = g_urls[link_id];
+			if (g_titles[link_id] != undefined) {
+				title = g_titles[link_id];
+			}
+		}
+		else {
+			return whole_match;
+		}
+	}	
+	
+	alt_text = alt_text.replace(/"/g,""");
+	url = escapeCharacters(url,"*_");
+	var result = "\""" + _RunSpanGamut(m1) + "");});
+
+	text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
+		function(matchFound,m1){return hashBlock("
    " + _RunSpanGamut(m1) + "
    ");});
+
+	// atx-style headers:
+	//  # Header 1
+	//  ## Header 2
+	//  ## Header 2 with closing hashes ##
+	//  ...
+	//  ###### Header 6
+	//
+
+	/*
+		text = text.replace(/
+			^(\#{1,6})				// $1 = string of #'s
+			[ \t]*
+			(.+?)					// $2 = Header text
+			[ \t]*
+			\#*						// optional closing #'s (not counted)
+			\n+
+		/gm, function() {...});
+	*/
+
+	text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
+		function(wholeMatch,m1,m2) {
+			var h_level = m1.length;
+			return hashBlock("" + _RunSpanGamut(m2) + "");
+		});
+
+	return text;
+}
+
+// This declaration keeps Dojo compressor from outputting garbage:
+var _ProcessListItems;
+
+var _DoLists = function(text) {
+//
+// Form HTML ordered (numbered) and unordered (bulleted) lists.
+//
+
+	// attacklab: add sentinel to hack around khtml/safari bug:
+	// http://bugs.webkit.org/show_bug.cgi?id=11231
+	text += "~0";
+
+	// Re-usable pattern to match any entirel ul or ol list:
+
+	/*
+		var whole_list = /
+		(									// $1 = whole list
+			(								// $2
+				[ ]{0,3}					// attacklab: g_tab_width - 1
+				([*+-]|\d+[.])				// $3 = first list item marker
+				[ \t]+
+			)
+			[^\r]+?
+			(								// $4
+				~0							// sentinel for workaround; should be $
+			|
+				\n{2,}
+				(?=\S)
+				(?!							// Negative lookahead for another list item marker
+					[ \t]*
+					(?:[*+-]|\d+[.])[ \t]+
+				)
+			)
+		)/g
+	*/
+	var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
+
+	if (g_list_level) {
+		text = text.replace(whole_list,function(wholeMatch,m1,m2) {
+			var list = m1;
+			var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol";
+
+			// Turn double returns into triple returns, so that we can make a
+			// paragraph for the last item in a list, if necessary:
+			list = list.replace(/\n{2,}/g,"\n\n\n");;
+			var result = _ProcessListItems(list);
+	
+			// Trim any trailing whitespace, to put the closing ``
+			// up on the preceding line, to get it past the current stupid
+			// HTML block parser. This is a hack to work around the terrible
+			// hack that is the HTML block parser.
+			result = result.replace(/\s+$/,"");
+			result = "<"+list_type+">" + result + "\n";
+			return result;
+		});
+	} else {
+		whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
+		text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) {
+			var runup = m1;
+			var list = m2;
+
+			var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol";
+			// Turn double returns into triple returns, so that we can make a
+			// paragraph for the last item in a list, if necessary:
+			var list = list.replace(/\n{2,}/g,"\n\n\n");;
+			var result = _ProcessListItems(list);
+			result = runup + "<"+list_type+">\n" + result + "\n";	
+			return result;
+		});
+	}
+
+	// attacklab: strip sentinel
+	text = text.replace(/~0/,"");
+
+	return text;
+}
+
+_ProcessListItems = function(list_str) {
+//
+//  Process the contents of a single ordered or unordered list, splitting it
+//  into individual list items.
+//
+	// The $g_list_level global keeps track of when we're inside a list.
+	// Each time we enter a list, we increment it; when we leave a list,
+	// we decrement. If it's zero, we're not in a list anymore.
+	//
+	// We do this because when we're not inside a list, we want to treat
+	// something like this:
+	//
+	//    I recommend upgrading to version
+	//    8. Oops, now this line is treated
+	//    as a sub-list.
+	//
+	// As a single paragraph, despite the fact that the second line starts
+	// with a digit-period-space sequence.
+	//
+	// Whereas when we're inside a list (or sub-list), that line will be
+	// treated as the start of a sub-list. What a kludge, huh? This is
+	// an aspect of Markdown's syntax that's hard to parse perfectly
+	// without resorting to mind-reading. Perhaps the solution is to
+	// change the syntax rules such that sub-lists must start with a
+	// starting cardinal number; e.g. "1." or "a.".
+
+	g_list_level++;
+
+	// trim trailing blank lines:
+	list_str = list_str.replace(/\n{2,}$/,"\n");
+
+	// attacklab: add sentinel to emulate \z
+	list_str += "~0";
+
+	/*
+		list_str = list_str.replace(/
+			(\n)?							// leading line = $1
+			(^[ \t]*)						// leading whitespace = $2
+			([*+-]|\d+[.]) [ \t]+			// list marker = $3
+			([^\r]+?						// list item text   = $4
+			(\n{1,2}))
+			(?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+))
+		/gm, function(){...});
+	*/
+	list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,
+		function(wholeMatch,m1,m2,m3,m4){
+			var item = m4;
+			var leading_line = m1;
+			var leading_space = m2;
+
+			if (leading_line || (item.search(/\n{2,}/)>-1)) {
+				item = _RunBlockGamut(_Outdent(item));
+			}
+			else {
+				// Recursion for sub-lists:
+				item = _DoLists(_Outdent(item));
+				item = item.replace(/\n$/,""); // chomp(item)
+				item = _RunSpanGamut(item);
+			}
+
+			return  "
  • " + item + "
    • \n";
+		}
+	);
+
+	// attacklab: strip sentinel
+	list_str = list_str.replace(/~0/g,"");
+
+	g_list_level--;
+	return list_str;
+}
+
+
+var _DoCodeBlocks = function(text) {
+//
+//  Process Markdown `
    ` blocks.
+//  
+
+	/*
+		text = text.replace(text,
+			/(?:\n\n|^)
+			(								// $1 = the code block -- one or more lines, starting with a space/tab
+				(?:
+					(?:[ ]{4}|\t)			// Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
+					.*\n+
+				)+
+			)
+			(\n*[ ]{0,3}[^ \t\n]|(?=~0))	// attacklab: g_tab_width
+		/g,function(){...});
+	*/
+
+	// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
+	text += "~0";
+	
+	text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
+		function(wholeMatch,m1,m2) {
+			var codeblock = m1;
+			var nextChar = m2;
+		
+			codeblock = _EncodeCode( _Outdent(codeblock));
+			codeblock = _Detab(codeblock);
+			codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
+			codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
+
+			codeblock = "
    " + codeblock + "\n
    ";
+
+			return hashBlock(codeblock) + nextChar;
+		}
+	);
+
+	// attacklab: strip sentinel
+	text = text.replace(/~0/,"");
+
+	return text;
+}
+
+var hashBlock = function(text) {
+	text = text.replace(/(^\n+|\n+$)/g,"");
+	return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n";
+}
+
+
+var _DoCodeSpans = function(text) {
+//
+//   *  Backtick quotes are used for  spans.
+// 
+//   *  You can use multiple backticks as the delimiters if you want to
+//	 include literal backticks in the code span. So, this input:
+//	 
+//		 Just type ``foo `bar` baz`` at the prompt.
+//	 
+//	   Will translate to:
+//	 
+//		 
    Just type foo `bar` baz at the prompt.
    
+//	 
+//	There's no arbitrary limit to the number of backticks you
+//	can use as delimters. If you need three consecutive backticks
+//	in your code, use four for delimiters, etc.
+//
+//  *  You can use spaces to get literal backticks at the edges:
+//	 
+//		 ... type `` `bar` `` ...
+//	 
+//	   Turns to:
+//	 
+//		 ... type `bar` ...
+//
+
+	/*
+		text = text.replace(/
+			(^|[^\\])					// Character before opening ` can't be a backslash
+			(`+)						// $2 = Opening run of `
+			(							// $3 = The code block
+				[^\r]*?
+				[^`]					// attacklab: work around lack of lookbehind
+			)
+			\2							// Matching closer
+			(?!`)
+		/gm, function(){...});
+	*/
+
+	text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
+		function(wholeMatch,m1,m2,m3,m4) {
+			var c = m3;
+			c = c.replace(/^([ \t]*)/g,"");	// leading whitespace
+			c = c.replace(/[ \t]*$/g,"");	// trailing whitespace
+			c = _EncodeCode(c);
+			return m1+""+c+"";
+		});
+
+	return text;
+}
+
+
+var _EncodeCode = function(text) {
+//
+// Encode/escape certain characters inside Markdown code runs.
+// The point is that in code, these characters are literals,
+// and lose their special Markdown meanings.
+//
+	// Encode all ampersands; HTML entities are not
+	// entities within a Markdown code span.
+	text = text.replace(/&/g,"&");
+
+	// Do the angle bracket song and dance:
+	text = text.replace(//g,">");
+
+	// Now, escape characters that are magic in Markdown:
+	text = escapeCharacters(text,"\*_{}[]\\",false);
+
+// jj the line above breaks this:
+//---
+
+//* Item
+
+//   1. Subitem
+
+//            special char: *
+//---
+
+	return text;
+}
+
+
+var _DoItalicsAndBold = function(text) {
+
+	//  must go first:
+	text = text.replace(/(\*\*|__)(?=\S)([^\r]*?\S[*_]*)\1/g,
+		"$2");
+
+	text = text.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g,
+		"$2");
+
+	return text;
+}
+
+
+var _DoBlockQuotes = function(text) {
+
+	/*
+		text = text.replace(/
+		(								// Wrap whole match in $1
+			(
+				^[ \t]*>[ \t]?			// '>' at the start of a line
+				.+\n					// rest of the first line
+				(.+\n)*					// subsequent consecutive lines
+				\n*						// blanks
+			)+
+		)
+		/gm, function(){...});
+	*/
+
+	text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
+		function(wholeMatch,m1) {
+			var bq = m1;
+
+			// attacklab: hack around Konqueror 3.5.4 bug:
+			// "----------bug".replace(/^-/g,"") == "bug"
+
+			bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0");	// trim one level of quoting
+
+			// attacklab: clean up hack
+			bq = bq.replace(/~0/g,"");
+
+			bq = bq.replace(/^[ \t]+$/gm,"");		// trim whitespace-only lines
+			bq = _RunBlockGamut(bq);				// recurse
+			
+			bq = bq.replace(/(^|\n)/g,"$1  ");
+			// These leading spaces screw with 
     content, so we need to fix that:
+			bq = bq.replace(
+					/(\s*
    [^\r]+?<\/pre>)/gm,
+				function(wholeMatch,m1) {
+					var pre = m1;
+					// attacklab: hack around Konqueror 3.5.4 bug:
+					pre = pre.replace(/^  /mg,"~0");
+					pre = pre.replace(/~0/g,"");
+					return pre;
+				});
+			
+			return hashBlock("
    \n" + bq + "\n
    ");
+		});
+	return text;
+}
+
+
+var _FormParagraphs = function(text) {
+//
+//  Params:
+//    $text - string to process with html 
     tags
+//
+
+	// Strip leading and trailing lines:
+	text = text.replace(/^\n+/g,"");
+	text = text.replace(/\n+$/g,"");
+
+	var grafs = text.split(/\n{2,}/g);
+	var grafsOut = new Array();
+
+	//
+	// Wrap 
     tags.
+	//
+	var end = grafs.length;
+	for (var i=0; i= 0) {
+			grafsOut.push(str);
+		}
+		else if (str.search(/\S/) >= 0) {
+			str = _RunSpanGamut(str);
+			str = str.replace(/^([ \t]*)/g,"
    ");
+			str += "
    "
+			grafsOut.push(str);
+		}
+
+	}
+
+	//
+	// Unhashify HTML blocks
+	//
+	end = grafsOut.length;
+	for (var i=0; i= 0) {
+			var blockText = g_html_blocks[RegExp.$1];
+			blockText = blockText.replace(/\$/g,"$$$$"); // Escape any dollar signs
+			grafsOut[i] = grafsOut[i].replace(/~K\d+K/,blockText);
+		}
+	}
+
+	return grafsOut.join("\n\n");
+}
+
+
+var _EncodeAmpsAndAngles = function(text) {
+// Smart processing for ampersands and angle brackets that need to be encoded.
+	
+	// Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
+	//   http://bumppo.net/projects/amputator/
+	text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g,"&");
+	
+	// Encode naked <'s
+	text = text.replace(/<(?![a-z\/?\$!])/gi,"<");
+	
+	return text;
+}
+
+
+var _EncodeBackslashEscapes = function(text) {
+//
+//   Parameter:  String.
+//   Returns:	The string, with after processing the following backslash
+//			   escape sequences.
+//
+
+	// attacklab: The polite way to do this is with the new
+	// escapeCharacters() function:
+	//
+	// 	text = escapeCharacters(text,"\\",true);
+	// 	text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
+	//
+	// ...but we're sidestepping its use of the (slow) RegExp constructor
+	// as an optimization for Firefox.  This function gets called a LOT.
+
+	text = text.replace(/\\(\\)/g,escapeCharacters_callback);
+	text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g,escapeCharacters_callback);
+	return text;
+}
+
+
+var _DoAutoLinks = function(text) {
+
+	text = text.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi,"    $1");
+
+	// Email addresses: 
+
+	/*
+		text = text.replace(/
+			<
+			(?:mailto:)?
+			(
+				[-.\w]+
+				\@
+				[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
+			)
+			>
+		/gi, _DoAutoLinks_callback());
+	*/
+	text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
+		function(wholeMatch,m1) {
+			return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
+		}
+	);
+
+	return text;
+}
+
+
+var _EncodeEmailAddress = function(addr) {
+//
+//  Input: an email address, e.g. "foo@example.com"
+//
+//  Output: the email address as a mailto link, with each character
+//	of the address encoded as either a decimal or hex entity, in
+//	the hopes of foiling most address harvesting spam bots. E.g.:
+//
+//	foo
+//	   @example.com
+//
+//  Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
+//  mailing list: 
+//
+
+	// attacklab: why can't javascript speak hex?
+	function char2hex(ch) {
+		var hexDigits = '0123456789ABCDEF';
+		var dec = ch.charCodeAt(0);
+		return(hexDigits.charAt(dec>>4) + hexDigits.charAt(dec&15));
+	}
+
+	var encode = [
+		function(ch){return "&#"+ch.charCodeAt(0)+";";},
+		function(ch){return "&#x"+char2hex(ch)+";";},
+		function(ch){return ch;}
+	];
+
+	addr = "mailto:" + addr;
+
+	addr = addr.replace(/./g, function(ch) {
+		if (ch == "@") {
+		   	// this *must* be encoded. I insist.
+			ch = encode[Math.floor(Math.random()*2)](ch);
+		} else if (ch !=":") {
+			// leave ':' alone (to spot mailto: later)
+			var r = Math.random();
+			// roughly 10% raw, 45% hex, 45% dec
+			ch =  (
+					r > .9  ?	encode[2](ch)   :
+					r > .45 ?	encode[1](ch)   :
+								encode[0](ch)
+				);
+		}
+		return ch;
+	});
+
+	addr = "" + addr + "";
+	addr = addr.replace(/">.+:/g,"\">"); // strip the mailto: from the visible part
+
+	return addr;
+}
+
+
+var _UnescapeSpecialChars = function(text) {
+//
+// Swap back in all the special characters we've hidden.
+//
+	text = text.replace(/~E(\d+)E/g,
+		function(wholeMatch,m1) {
+			var charCodeToReplace = parseInt(m1);
+			return String.fromCharCode(charCodeToReplace);
+		}
+	);
+	return text;
+}
+
+
+var _Outdent = function(text) {
+//
+// Remove one level of line-leading tabs or spaces
+//
+
+	// attacklab: hack around Konqueror 3.5.4 bug:
+	// "----------bug".replace(/^-/g,"") == "bug"
+
+	text = text.replace(/^(\t|[ ]{1,4})/gm,"~0"); // attacklab: g_tab_width
+
+	// attacklab: clean up hack
+	text = text.replace(/~0/g,"")
+
+	return text;
+}
+
+var _Detab = function(text) {
+// attacklab: Detab's completely rewritten for speed.
+// In perl we could fix it by anchoring the regexp with \G.
+// In javascript we're less fortunate.
+
+	// expand first n-1 tabs
+	text = text.replace(/\t(?=\t)/g,"    "); // attacklab: g_tab_width
+
+	// replace the nth with two sentinels
+	text = text.replace(/\t/g,"~A~B");
+
+	// use the sentinel to anchor our regex so it doesn't explode
+	text = text.replace(/~B(.+?)~A/g,
+		function(wholeMatch,m1,m2) {
+			var leadingText = m1;
+			var numSpaces = 4 - leadingText.length % 4;  // attacklab: g_tab_width
+
+			// there *must* be a better way to do this:
+			for (var i=0; i