diff --git a/min/builder/index.php b/min/builder/index.php
index a3c4e2f..76b29bf 100644
--- a/min/builder/index.php
+++ b/min/builder/index.php
@@ -53,7 +53,7 @@ if (! isset($min_cachePath) && ! function_exists('sys_get_temp_dir')) {
 
 ob_start();
 ?>
-<!DOCTYPE HTML>
+<!DOCTYPE html>
 <title>Minify URI Builder</title>
 <meta name="ROBOTS" content="NOINDEX, NOFOLLOW">
 <style>
@@ -176,52 +176,51 @@ by Minify. E.g. <code>@import "<span class=minRoot>/min/?</span>g=css2";</code><
  list</a>.</p>
  <p><small>Powered by Minify <?php echo Minify::VERSION; ?></small></p>
 
-<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
+<script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.3/jquery.min.js"></script>
+<script>window.jQuery || document.write('<script src="jquery-1.6.3.min.js"><\/script>')</script>
 <script>
-$(function () {
-    // give Minify a few seconds to serve _index.js before showing scary red warning
-    setTimeout(function () {
-        if (! window.MUB) {
-            // Minify didn't load
-            $('#jsDidntLoad').css({display:'block'});
-        }
-    }, 3000);
+(function () {
+    // workaround required to test when /min isn't child of web root
+    var src = "../?f=" + location.pathname.replace(/\/[^\/]*$/, '/_index.js').substr(1);
+    // load script immediately
+    document.write('<\script src="' + src + '"><\/script>');
+    $(function () {
+        $('#builderScriptSrc')[0].href = src;
+        // give Minify a few seconds to serve _index.js before showing scary red warning
+        setTimeout(function () {
+            if (! window.MUB) {
+                // Minify didn't load
+                $('#jsDidntLoad').css({display:'block'});
+            }
+        }, 3000);
 
-    // detection of double output encoding
-    var msg = '<\p class=topWarning><\strong>Warning:<\/strong> ';
-    var url = 'ocCheck.php?' + (new Date()).getTime();
-    $.get(url, function (ocStatus) {
-        $.get(url + '&hello=1', function (ocHello) {
-            if (ocHello != 'World!') {
-                msg += 'It appears output is being automatically compressed, interfering ' 
-                     + ' with Minify\'s own compression. ';
-                if (ocStatus == '1')
-                    msg += 'The option "zlib.output_compression" is enabled in your PHP configuration. '
-                         + 'Minify set this to "0", but it had no effect. This option must be disabled ' 
-                         + 'in php.ini or .htaccess.';
-                else
-                    msg += 'The option "zlib.output_compression" is disabled in your PHP configuration '
-                         + 'so this behavior is likely due to a server option.';
-                $(document.body).prepend(msg + '<\/p>');
-            } else
-                if (ocStatus == '1')
-                    $(document.body).prepend('<\p class=topNote><\strong>Note:</\strong> The option '
-                        + '"zlib.output_compression" is enabled in your PHP configuration, but has been '
-                        + 'successfully disabled via ini_set(). If you experience mangled output you '
-                        + 'may want to consider disabling this option in your PHP configuration.<\/p>'
-                    );
+        // detection of double output encoding
+        var msg = '<\p class=topWarning><\strong>Warning:<\/strong> ';
+        var url = 'ocCheck.php?' + (new Date()).getTime();
+        $.get(url, function (ocStatus) {
+            $.get(url + '&hello=1', function (ocHello) {
+                if (ocHello != 'World!') {
+                    msg += 'It appears output is being automatically compressed, interfering '
+                         + ' with Minify\'s own compression. ';
+                    if (ocStatus == '1')
+                        msg += 'The option "zlib.output_compression" is enabled in your PHP configuration. '
+                             + 'Minify set this to "0", but it had no effect. This option must be disabled '
+                             + 'in php.ini or .htaccess.';
+                    else
+                        msg += 'The option "zlib.output_compression" is disabled in your PHP configuration '
+                             + 'so this behavior is likely due to a server option.';
+                    $(document.body).prepend(msg + '<\/p>');
+                } else
+                    if (ocStatus == '1')
+                        $(document.body).prepend('<\p class=topNote><\strong>Note:</\strong> The option '
+                            + '"zlib.output_compression" is enabled in your PHP configuration, but has been '
+                            + 'successfully disabled via ini_set(). If you experience mangled output you '
+                            + 'may want to consider disabling this option in your PHP configuration.<\/p>'
+                        );
+            });
         });
     });
-});
-</script>
-<script>
-// workaround required to test when /min isn't child of web root
-var src = location.pathname.replace(/\/[^\/]*$/, '/_index.js').substr(1);
-src = "../?f=" + src;
-document.write('<\script type="text/javascript" src="' + src + '"><\/script>');
-$(function () {
-    $('#builderScriptSrc')[0].href = src;
-});
+})();
 </script>
 </body>
 <?php
diff --git a/min/builder/jquery-1.6.3.min.js b/min/builder/jquery-1.6.3.min.js
new file mode 100644
index 0000000..f57003f
--- /dev/null
+++ b/min/builder/jquery-1.6.3.min.js
@@ -0,0 +1,4 @@
+/*! jQuery v1.6.3 http://jquery.com/ | http://jquery.org/license */
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a})}}),f.each(["Left","Top"],function(a,c){var d="scroll"+c;f.fn[d]=function(c){var e,g;if(c===b){e=this[0];if(!e)return null;g=cu(e);return g?"pageXOffset"in g?g[a?"pageYOffset":"pageXOffset"]:f.support.boxModel&&g.document.documentElement[d]||g.document.body[d]:e[d]}return this.each(function(){g=cu(this),g?g.scrollTo(a?f(g).scrollLeft():c,a?c:f(g).scrollTop()):this[d]=c})}}),f.each(["Height","Width"],function(a,c){var d=c.toLowerCase();f.fn["inner"+c]=function(){var a=this[0];return a&&a.style?parseFloat(f.css(a,d,"padding")):null},f.fn["outer"+c]=function(a){var b=this[0];return b&&b.style?parseFloat(f.css(b,d,a?"margin":"border")):null},f.fn[d]=function(a){var e=this[0];if(!e)return a==null?null:this;if(f.isFunction(a))return this.each(function(b){var c=f(this);c[d](a.call(this,b,c[d]()))});if(f.isWindow(e)){var g=e.document.documentElement["client"+c],h=e.document.body;return e.document.compatMode==="CSS1Compat"&&g||h&&h["client"+c]||g}if(e.nodeType===9)return 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\ No newline at end of file
diff --git a/min/lib/Minify.php b/min/lib/Minify.php
index 75b44c2..36b1d48 100644
--- a/min/lib/Minify.php
+++ b/min/lib/Minify.php
@@ -388,30 +388,24 @@ class Minify {
     }
     
     /**
-     * On IIS, create $_SERVER['DOCUMENT_ROOT']
+     * Set $_SERVER['DOCUMENT_ROOT']. On IIS, the value is created from SCRIPT_FILENAME and SCRIPT_NAME.
      * 
-     * @param bool $unsetPathInfo (default false) if true, $_SERVER['PATH_INFO']
-     * will be unset (it is inconsistent with Apache's setting)
-     * 
-     * @return null
+     * @param string $docRoot value to use for DOCUMENT_ROOT
      */
-    public static function setDocRoot($unsetPathInfo = false)
+    public static function setDocRoot($docRoot = '')
     {
-        if (isset($_SERVER['SERVER_SOFTWARE'])
-            && 0 === strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/')
+        self::$isDocRootSet = true;
+        if ($docRoot) {
+            $_SERVER['DOCUMENT_ROOT'] = $docRoot;
+        } elseif (isset($_SERVER['SERVER_SOFTWARE'])
+                  && 0 === strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/')
         ) {
             $_SERVER['DOCUMENT_ROOT'] = rtrim(substr(
                 $_SERVER['SCRIPT_FILENAME']
                 ,0
                 ,strlen($_SERVER['SCRIPT_FILENAME']) - strlen($_SERVER['SCRIPT_NAME'])
             ), '\\');
-            if ($unsetPathInfo) {
-                unset($_SERVER['PATH_INFO']);
-            }
-            require_once 'Minify/Logger.php';
-            Minify_Logger::log("setDocRoot() set DOCUMENT_ROOT to \"{$_SERVER['DOCUMENT_ROOT']}\"");
         }
-        self::$isDocRootSet = true;
     }
     
     /**
@@ -511,7 +505,7 @@ class Minify {
                     : $defaultOptions;
             }
             // do we need to process our group right now?
-            if ($i > 0                               // no, the first group doesn't exist yet
+            if ($i > 0                               // yes, we have at least the first group populated
                 && (
                     ! $source                        // yes, we ran out of sources
                     || $type === self::TYPE_CSS      // yes, to process CSS individually (avoiding PCRE bugs/limits)
diff --git a/min/lib/MrClay/Matcher.php b/min/lib/MrClay/Matcher.php
new file mode 100644
index 0000000..ba9a1be
--- /dev/null
+++ b/min/lib/MrClay/Matcher.php
@@ -0,0 +1,594 @@
+<?php
+/**
+ * Class MrClay_Matcher
+ * @package Minify
+ */
+
+/**
+ * Port of java.util.regex.Matcher
+ *
+ * @package Minify
+ * @throws InvalidArgumentException|RuntimeException
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class MrClay_Matcher {
+
+    /**
+     * @var MrClay_Pattern The Pattern object that created this Matcher.
+     */
+    protected $parentPattern;
+
+    /**
+     * @var array The storage used by groups. They may contain invalid values if a group was skipped during the matching.
+     */
+    protected $groups = array();
+
+    /**
+     * @var int The beginning of the range within the sequence that is to be matched. Anchors will match at these
+     * "hard" boundaries. Changing the region changes these values.
+     */
+    protected $from;
+
+    /**
+     * @var int The end of the range within the sequence that is to be matched. Anchors will match at these
+     * "hard" boundaries. Changing the region changes these values.
+     */
+    protected $to;
+
+    /**
+     * @var string The original string being matched.
+     */
+    protected $text;
+
+    /**
+     * mode used for matching all the input.
+     */
+    const ENDANCHOR = 1;
+
+    /**
+     * mode used when a match does not have to consume all of the input.
+     */
+    const NOANCHOR = 0;
+
+    /**
+     * @var int Matcher state used by the last node. NOANCHOR is used when a match does not have to consume
+     * all of the input. ENDANCHOR is the mode used for matching all the input.
+     */
+    protected $acceptMode = self::NOANCHOR;
+
+    /**
+     * @var int Beginning of the range of string that last matched the pattern. If the last match failed then $first
+     * is -1;
+     */
+    protected $first = -1;
+
+    /**
+     * @var int $last initially holds 0 then it holds the index of the end of the last match (which is where the next
+     * search starts).
+     */
+    protected $last = 0;
+
+    /**
+     * @var int The end index of what matched in the last match operation.
+     */
+    protected $oldLast = -1;
+
+    /**
+     * @var int The index of the last position appended in a substitution.
+     */
+    protected $lastAppendPosition = 0;
+
+    /**
+     * @var bool Boolean indicating whether or not more input could change the results of the last match.
+     *
+     * If hitEnd is true, and a match was found, then more input might cause a different match to be found.
+     * If hitEnd is true and a match was not found, then more input could cause a match to be found.
+     * If hitEnd is false and a match was found, then more input will not change the match.
+     * If hitEnd is false and a match was not found, then more input will not cause a match to be found.
+     */
+    protected $hitEnd;
+
+    /**
+     * @var bool Boolean indicating whether or not more input could change a positive match into a negative one.
+     *
+     * If requireEnd is true, and a match was found, then more input could cause the match to be lost.
+     * If requireEnd is false and a match was found, then more input might change the match but the match won't be lost.
+     * If a match was not found, then requireEnd has no meaning.
+     */
+    protected $requireEnd;
+
+    /**
+     * @var bool If transparentBounds is true then the boundaries of this matcher's region are transparent to
+     * lookahead, lookbehind, and boundary matching constructs that try to see beyond them.
+     */
+    protected $transparentBounds = false;
+
+    /**
+     * @var bool If anchoringBounds is true then the boundaries of this matcher's region match anchors such as ^ and $.
+     */
+    protected $anchoringBounds = true;
+
+    /**
+     * @param MrClay_Pattern $parent
+     * @param string $text
+     */
+    public function __construct(MrClay_Pattern $parent, $text)
+    {
+        $this->parentPattern = $parent;
+        $this->text = $text;
+
+        // Put fields into initial states
+        $this->reset();
+    }
+
+    /**
+     * Returns the pattern that is interpreted by this matcher.
+     * @return MrClay_Pattern
+     */
+    public function pattern()
+    {
+        return $this->parentPattern;
+    }
+
+    /**
+     * Returns the match state of this matcher
+     * @return MrClay_MatchResult
+     */
+    public function toMatchResult()
+    {
+        // @todo
+    }
+
+    /**
+     * Changes the Pattern that this Matcher uses to find matches with.
+     * @param MrClay_Pattern $newPattern
+     * @return MrClay_Matcher
+     */
+    public function usePattern(MrClay_Pattern $newPattern)
+    {
+        $this->parentPattern = $newPattern;
+        $this->groups = array();
+        return $this;
+    }
+
+    /**
+     * Attempts to match the entire region against the pattern.
+     * @return bool
+     */
+    public function matches()
+    {
+        return $this->match($this->from, self::ENDANCHOR);
+    }
+
+    /**
+     * Attempts to find the next subsequence of the input sequence that matches the pattern. If $start is specified,
+     * this resets this matcher and then attempts to find the next subsequence of the input sequence that matches the
+     * pattern, starting at the specified index.
+     * @param int $start
+     * @return bool
+     */
+    public function find($start = null)
+    {
+        if ($start !== null) {
+            $this->reset();
+            return $this->search($start);
+        }
+
+        $nextSearchIndex = $this->last;
+        if ($nextSearchIndex == $this->first)
+            $nextSearchIndex++;
+
+        // If next search starts before region, start it at region
+        if ($nextSearchIndex < $this->from)
+            $nextSearchIndex = $this->from;
+
+        // If next search starts beyond region then it fails
+        if ($nextSearchIndex > $this->to) {
+            $this->groups = array();
+            return false;
+        }
+        return $this->search($nextSearchIndex);
+    }
+
+    /**
+     * Resets this matcher with a new input sequence.
+     * @param $input
+     * @return MrClay_Matcher
+     */
+    public function reset($input = null)
+    {
+        if ($input !== null) {
+            $this->text = $input;
+        }
+        $this->first = -1;
+        $this->last = 0;
+        $this->oldLast = -1;
+        $this->groups = array();
+        $this->lastAppendPosition = 0;
+        $this->from = 0;
+        $this->to = strlen($this->text);
+        return $this;
+    }
+
+    /**
+     * Returns the start index of the previous match. If $group is given, this returns the start index of the
+     * subsequence captured by the given group during the previous match operation.
+     * @param int $group
+     * @return int
+     */
+    public function start($group = null)
+    {
+        if ($group !== null) {
+            return isset($this->groups[$group * 2]) ? $this->groups[$group * 2] : -1;
+        }
+        return $this->first;
+    }
+
+    /**
+     * Returns the offset after the last character matched. If $group is given, this returns the offset after the last
+     * character of the subsequence captured by the given group during the previous match operation
+     * @param int $group
+     * @return int
+     */
+    public function end($group = null)
+    {
+        if ($group !== null) {
+            return isset($this->groups[$group * 2 + 1]) ? $this->groups[$group * 2 + 1] : -1;
+        }
+        return $this->last;
+    }
+
+    /**
+     * Returns the input subsequence matched by the previous match. If $group is given, this returns the input
+     * subsequence captured by the given group during the previous match operation.
+     * @param int $group
+     * @return string
+     */
+    public function group($group = null)
+    {
+        if ($group !== null) {
+            return substr(
+                $this->text,
+                $this->groups[$group * 2],
+                ($this->groups[$group * 2 + 1] - $this->groups[$group * 2]));
+        }
+        return $this->group(0);
+    }
+
+    /**
+     * Returns the number of capturing groups in this matcher's pattern.
+     * @return int
+     */
+    public function groupCount()
+    {
+        return $this->parentPattern->capturingGroupCount - 1;
+    }
+
+    /**
+     * Attempts to match the input sequence, starting at the beginning of the region, against the pattern.
+     * @return bool
+     */
+    public function lookingAt()
+    {
+        return $this->match($this->from, self::NOANCHOR);
+    }
+
+    /**
+     * Returns a literal replacement String for the specified String.
+     * @param string $s
+     * @return string
+     */
+    public function quoteReplacement($s)
+    {
+        return preg_quote($s, '/');
+    }
+
+    /**
+     * Implements a non-terminal append-and-replace step.
+     * @param string $sb
+     * @param string $replacement
+     * @return MrClay_Matcher
+     */
+    public function appendReplacement(&$sb, $replacement)
+    {
+        // If no match, return error
+        if ($this->first < 0)
+            throw new RuntimeException("No match available");
+
+        // Process substitution string to replace group references with groups
+        $cursor = 0;
+        $result = '';
+
+        while ($cursor < strlen($replacement)) {
+            $nextChar = $replacement[$cursor];
+            if ($nextChar == '\\') {
+                $cursor++;
+                $nextChar = $replacement[$cursor];
+                $result .= $nextChar;
+                $cursor++;
+            } else if ($nextChar == '$') {
+                // Skip past $
+                $cursor++;
+                // The first number is always a group
+                $refNum = (int) $replacement[$cursor] - '0';
+                if (($refNum < 0) || ($refNum > 9))
+                    throw new InvalidArgumentException(
+                            "Illegal group reference");
+                $cursor++;
+
+                // Capture the largest legal group string
+                $done = false;
+                while (!$done) {
+                    if ($cursor >= strlen($replacement)) {
+                        break;
+                    }
+                    $nextDigit = $replacement[$cursor] - '0';
+                    if (($nextDigit < 0) || ($nextDigit > 9)) { // not a number
+                        break;
+                    }
+                    $newRefNum = ($refNum * 10) + $nextDigit;
+                    if ($this->groupCount() < $newRefNum) {
+                        $done = true;
+                    } else {
+                        $refNum = $newRefNum;
+                        $cursor++;
+                    }
+                }
+                // Append group
+                if ($this->start($refNum) != -1 && $this->end($refNum) != -1)
+                    $result .= substr(
+                            $this->text,
+                            $this->start($refNum),
+                            $this->end($refNum) - $this->start($refNum)
+                    );
+            } else {
+                $result .= $nextChar;
+                $cursor++;
+            }
+        }
+        // Append the intervening text
+        $sb .= substr($this->text, $this->lastAppendPosition, $this->first - $this->lastAppendPosition);
+        // Append the match substitution
+        $sb .= $result;
+
+        $this->lastAppendPosition = $this->last;
+        return $this;
+    }
+
+    /**
+     * Implements a terminal append-and-replace step.
+     * @param string $sb
+     * @return string
+     */
+    public function appendTail(&$sb)
+    {
+        $sb .= substr($this->text, $this->lastAppendPosition);
+        return $sb;
+    }
+
+    /**
+     * Replaces every subsequence of the input sequence that matches the pattern with the given replacement string.
+     * @param string $replacement
+     * @return string
+     */
+    public function replaceAll($replacement)
+    {
+        $this->reset();
+        $result = $this->find();
+        if ($result) {
+            $sb = '';
+            do {
+                $this->appendReplacement($sb, $replacement);
+                $result = $this->find();
+            } while ($result);
+            $this->appendTail($sb);
+            return $sb;
+        }
+        return $this->text;
+    }
+
+    /**
+     * Replaces the first subsequence of the input sequence that matches the pattern with the given replacement string.
+     * @param string $replacement
+     * @return string
+     */
+    public function replaceFirst($replacement)
+    {
+        $this->reset();
+        if (!$this->find())
+            return $this->text;
+        $sb = '';
+        $this->appendReplacement($sb, $replacement);
+        $this->appendTail($sb);
+        return $sb;
+    }
+
+    /**
+     * Sets the limits of this matcher's region.
+     * @param int $start
+     * @param int $end
+     * @return MrClay_Matcher
+     */
+    public function region($start, $end)
+    {
+        $this->reset();
+        $this->from = $start;
+        $this->to = $end;
+        return $this;
+    }
+
+    /**
+     * Reports the start index of this matcher's region.
+     * @return int
+     */
+    public function regionStart()
+    {
+        return $this->from;
+    }
+
+    /**
+     * Reports the end index (exclusive) of this matcher's region.
+     * @return int
+     */
+    public function regionEnd()
+    {
+        return $this->to;
+    }
+
+    /**
+     * Queries the transparency of region bounds for this matcher.
+     * @return bool
+     */
+    public function hasTransparentBounds()
+    {
+        return $this->transparentBounds;
+    }
+
+    /**
+     * Sets the transparency of region bounds for this matcher.
+     * @param bool $b
+     * @return MrClay_Matcher
+     */
+    public function useTransparentBounds($b)
+    {
+        $this->transparentBounds = $b;
+        return $this;
+    }
+
+    /**
+     * Queries the anchoring of region bounds for this matcher.
+     * @return bool
+     */
+    public function hasAnchoringBounds()
+    {
+        return $this->anchoringBounds;
+    }
+
+    /**
+     * Sets the anchoring of region bounds for this matcher.
+     * @param bool $b
+     * @return MrClay_Matcher
+     */
+    public function useAnchoringBounds($b)
+    {
+        $this->anchoringBounds = $b;
+        return $this;
+    }
+
+    /**
+     * Returns true if the end of input was hit by the search engine in the last match operation performed by this
+     * matcher.
+     * @return bool
+     */
+    public function hitEnd()
+    {
+        return $this->hitEnd;
+    }
+
+    /**
+     * Returns true if more input could change a positive match into a negative one.
+     * @return bool
+     */
+    public function requireEnd()
+    {
+        return $this->requireEnd;
+    }
+
+    /**
+     * Initiates a search to find a Pattern within the given bounds. The groups are filled with
+     * default values and the match of the root of the state machine is called. The state machine
+     * will hold the state of the match as it proceeds in this matcher.
+     *
+     * Matcher.from is not set here, because it is the "hard" boundary of the start of the search
+     * which anchors will set to. The from param is the "soft" boundary of the start of the search,
+     * meaning that the regex tries to match at that index but ^ won't match there. Subsequent
+     * calls to the search methods start at a new "soft" boundary which is the end of the previous match.
+     *
+     * @param int $from
+     * @return bool
+     */
+    protected function search($from)
+    {
+        $this->hitEnd = false;
+        $this->requireEnd = false;
+        $from = $from < 0 ? 0 : $from;
+        $this->first = $from;
+        $this->oldLast = $this->oldLast < 0 ? $from : $this->oldLast;
+        $this->groups = array();
+        $this->acceptMode = self::NOANCHOR;
+
+        if ($this->anchoringBounds) {
+            // ^ and $ should anchor the beg/end of the string given
+            $result = preg_match($this->parentPattern->pattern, substr($this->text, $from), $m, PREG_OFFSET_CAPTURE);
+            if ($result) {
+                // adjust the offsets to account for sending a substring in
+                foreach ($m as $k => $match) {
+                    $m[$k][1] = $match[1] + $from;
+                }
+            }
+        } else {
+            $result = preg_match($this->parentPattern->pattern, $this->text, $m, PREG_OFFSET_CAPTURE, $from);
+        }
+        if ($result) {
+            $this->first = $m[0][1];
+            $this->last = $m[0][1] + strlen($m[0][0]);
+            foreach ($m as $match) {
+                $this->groups[] = $match[1];
+                $this->groups[] = $match[1] + strlen($match[0]);
+            }
+        } else {
+            $this->first = -1;
+        }
+        $this->oldLast = $this->last;
+        return (bool) $result;
+    }
+
+    /**
+     * Initiates a search for an anchored match to a Pattern within the given
+     * bounds. The groups are filled with default values and the match of the
+     * root of the state machine is called. The state machine will hold the
+     * state of the match as it proceeds in this matcher.
+     *
+     * @param int $from
+     * @param int $anchor
+     * @return bool
+     */
+    protected function match($from, $anchor) {
+        $this->hitEnd = false;
+        $this->requireEnd = false;
+        $from = $from < 0 ? 0 : $from;
+        $this->first = $from;
+        $this->oldLast = $this->oldLast < 0 ? $from : $this->oldLast;
+        $this->groups = array();
+        $this->acceptMode = $anchor;
+
+        if ($this->anchoringBounds) {
+            // ^ and $ should anchor the beg/end of the string given
+            $result = preg_match($this->parentPattern->pattern, substr($this->text, $from), $m, PREG_OFFSET_CAPTURE);
+            if ($result) {
+                // adjust the offsets to account for sending a substring in
+                foreach ($m as $k => $match) {
+                    $m[$k][1] = $match[1] + $from;
+                }
+            }
+        } else {
+            $result = preg_match($this->parentPattern->pattern, $this->text, $m, PREG_OFFSET_CAPTURE, $from);
+        }
+        // require entire match in ENDANCHOR mode
+        if ($result && ($this->acceptMode === self::ENDANCHOR) && ($m[0][0] !== substr($this->text, $from))) {
+            $result = false;
+        }
+        if ($result) {
+            $this->first = $m[0][1];
+            $this->last = $m[0][1] + strlen($m[0][0]);
+            foreach ($m as $match) {
+                $this->groups[] = $match[1];
+                $this->groups[] = $match[1] + strlen($match[0]);
+            }
+        } else {
+            $this->first = -1;
+        }
+        $this->oldLast = $this->last;
+        return (bool) $result;
+    }
+}
diff --git a/min/lib/MrClay/Pattern.php b/min/lib/MrClay/Pattern.php
new file mode 100644
index 0000000..b88fc40
--- /dev/null
+++ b/min/lib/MrClay/Pattern.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Class MrClay_Pattern
+ * @package Minify
+ */
+
+/**
+ * Extremely incomplete port of java.util.regex.Pattern
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class MrClay_Pattern {
+    public $pattern = '';
+    public $capturingGroupCount = 0;
+
+    public function __construct($pattern, $numGroups)
+    {
+        $this->pattern = $pattern;
+        $this->capturingGroupCount = $numGroups;
+    }
+
+    public function matcher($input)
+    {
+        return new MrClay_Matcher($this, $input);
+    }
+}
diff --git a/min_unit_tests/test_MrClay_Matcher.php b/min_unit_tests/test_MrClay_Matcher.php
new file mode 100644
index 0000000..a067f1f
--- /dev/null
+++ b/min_unit_tests/test_MrClay_Matcher.php
@@ -0,0 +1,55 @@
+<?php
+require_once '_inc.php';
+
+require_once 'MrClay/Pattern.php';
+require_once 'MrClay/Matcher.php';
+
+function test_MrClay_Matcher()
+{
+    global $thisDir;
+   
+    $tests = array(
+        array(
+            'pattern' => '/cat/',
+            'numGroups' => 0,
+            'input' => 'one cat two cats in the yard',
+            'replacement' => 'dog',
+        ),
+        array(
+            'pattern' => '/([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3/',
+            'numGroups' => 3,
+            'input' => 'Hello World! aa66ff fefe 44ee6677 gg',
+            'replacement' => '######',
+        ),
+        array(
+            'pattern' => '/^([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3/',
+            'numGroups' => 3,
+            'input' => 'Hello World! aa66ff fefe 44ee6677 gg',
+            'replacement' => '######',
+        ),
+        array(
+            'pattern' => '/([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3/',
+            'numGroups' => 3,
+            'input' => 'Hello World! aa66ff fefe 44ee6677 gg',
+            'replacement' => '$1$1$2$2$3$3',
+        ),
+    );
+    foreach ($tests as $test) {
+        $pattern = new MrClay_Pattern($test['pattern'], $test['numGroups']);
+        $matcher = $pattern->matcher($test['input']);
+        var_export($matcher->matches()); echo "\n";
+        while ($matcher->find()) {
+            var_export($matcher->group());
+        }
+        $matcher->reset(); echo "\n";
+        $sb = '';
+        while ($matcher->find()) {
+            $matcher->appendReplacement($sb, $test['replacement']);
+        }
+        $matcher->appendTail($sb);
+        var_export($sb);
+        echo "\n\n";
+    }
+}
+
+test_MrClay_Matcher();
