Ticket #16024: 16024.diff

wp-includes/class.wp-scripts.php

@@ -122 +122 @@
                         $src = add_query_arg('ver', $ver, $src);
                 $src = esc_url(apply_filters( 'script_loader_src', $src, $handle ));
 
-                if ( $this->do_concat )
+                if ( $this->do_concat ) {
                         $this->print_html .= "<script type='text/javascript' src='$src'></script>\n";
-                else
-                        echo "<script type='text/javascript' src='$src'></script>\n";
+                } else {
+                        $start_cond = $end_cond = '';
+                        if ( isset($this->registered[$handle]->extra['conditional']) && $this->registered[$handle]->extra['conditional'] ) {
+                                $start_cond = "<!--[if {$this->registered[$handle]->extra['conditional']}]>\n";
+                                $end_cond = "<![endif]-->\n";
+                        }
+                        echo "{$start_cond}<script type='text/javascript' src='$src'></script>\n{$end_cond}";
+                }
 
                 return true;
         }