diff -r 000000000000 -r d970ebf37754 wp/wp-includes/class.wp-styles.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/class.wp-styles.php	Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,171 @@
+<?php
+/**
+ * BackPress Styles enqueue.
+ *
+ * These classes were refactored from the WordPress WP_Scripts and WordPress
+ * script enqueue API.
+ *
+ * @package BackPress
+ * @since r74
+ */
+
+/**
+ * BackPress Styles enqueue class.
+ *
+ * @package BackPress
+ * @uses WP_Dependencies
+ * @since r74
+ */
+class WP_Styles extends WP_Dependencies {
+	var $base_url;
+	var $content_url;
+	var $default_version;
+	var $text_direction = 'ltr';
+	var $concat = '';
+	var $concat_version = '';
+	var $do_concat = false;
+	var $print_html = '';
+	var $print_code = '';
+	var $default_dirs;
+
+	function __construct() {
+		do_action_ref_array( 'wp_default_styles', array(&$this) );
+	}
+
+	function do_item( $handle ) {
+		if ( !parent::do_item($handle) )
+			return false;
+
+		$obj = $this->registered[$handle];
+		if ( null === $obj->ver )
+			$ver = '';
+		else
+			$ver = $obj->ver ? $obj->ver : $this->default_version;
+
+		if ( isset($this->args[$handle]) )
+			$ver = $ver ? $ver . '&amp;' . $this->args[$handle] : $this->args[$handle];
+
+		if ( $this->do_concat ) {
+			if ( $this->in_default_dir($obj->src) && !isset($obj->extra['conditional']) && !isset($obj->extra['alt']) ) {
+				$this->concat .= "$handle,";
+				$this->concat_version .= "$handle$ver";
+
+				$this->print_code .= $this->print_inline_style( $handle, false );
+
+				return true;
+			}
+		}
+
+		if ( isset($obj->args) )
+			$media = esc_attr( $obj->args );
+		else
+			$media = 'all';
+
+		$href = $this->_css_href( $obj->src, $ver, $handle );
+		$rel = isset($obj->extra['alt']) && $obj->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
+		$title = isset($obj->extra['title']) ? "title='" . esc_attr( $obj->extra['title'] ) . "'" : '';
+
+		$end_cond = $tag = '';
+		if ( isset($obj->extra['conditional']) && $obj->extra['conditional'] ) {
+			$tag .= "<!--[if {$obj->extra['conditional']}]>\n";
+			$end_cond = "<![endif]-->\n";
+		}
+
+		$tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
+		if ( 'rtl' === $this->text_direction && isset($obj->extra['rtl']) && $obj->extra['rtl'] ) {
+			if ( is_bool( $obj->extra['rtl'] ) ) {
+				$suffix = isset( $obj->extra['suffix'] ) ? $obj->extra['suffix'] : '';
+				$rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $obj->src , $ver, "$handle-rtl" ));
+			} else {
+				$rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" );
+			}
+
+			$tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
+		}
+
+		$tag .= $end_cond;
+
+		if ( $this->do_concat ) {
+			$this->print_html .= $tag;
+			if ( $inline_style = $this->print_inline_style( $handle, false ) )
+				$this->print_html .= sprintf( "<style type='text/css'>\n%s\n</style>\n", $inline_style );
+		} else {
+			echo $tag;
+			$this->print_inline_style( $handle );
+		}
+
+		return true;
+	}
+
+	function add_inline_style( $handle, $code ) {
+		if ( !$code )
+			return false;
+
+		$after = $this->get_data( $handle, 'after' );
+		if ( !$after )
+			$after = array();
+
+		$after[] = $code;
+
+		return $this->add_data( $handle, 'after', $after );
+	}
+
+	function print_inline_style( $handle, $echo = true ) {
+		$output = $this->get_data( $handle, 'after' );
+
+		if ( empty( $output ) )
+			return false;
+
+		$output = implode( "\n", $output );
+
+		if ( !$echo )
+			return $output;
+
+		echo "<style type='text/css'>\n";
+		echo "$output\n";
+		echo "</style>\n";
+
+		return true;
+	}
+
+	function all_deps( $handles, $recursion = false, $group = false ) {
+		$r = parent::all_deps( $handles, $recursion );
+		if ( !$recursion )
+			$this->to_do = apply_filters( 'print_styles_array', $this->to_do );
+		return $r;
+	}
+
+	function _css_href( $src, $ver, $handle ) {
+		if ( !is_bool($src) && !preg_match('|^(https?:)?//|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
+			$src = $this->base_url . $src;
+		}
+
+		if ( !empty($ver) )
+			$src = add_query_arg('ver', $ver, $src);
+		$src = apply_filters( 'style_loader_src', $src, $handle );
+		return esc_url( $src );
+	}
+
+	function in_default_dir($src) {
+		if ( ! $this->default_dirs )
+			return true;
+
+		foreach ( (array) $this->default_dirs as $test ) {
+			if ( 0 === strpos($src, $test) )
+				return true;
+		}
+		return false;
+	}
+
+	function do_footer_items() { // HTML 5 allows styles in the body, grab late enqueued items and output them in the footer.
+		$this->do_items(false, 1);
+		return $this->done;
+	}
+
+	function reset() {
+		$this->do_concat = false;
+		$this->concat = '';
+		$this->concat_version = '';
+		$this->print_html = '';
+	}
+}