Get the raw coverage instead of a proxied object. We're handling the

html escaping manually here.

www/CoverageAnalyzer/templates/SourceFile.tpl.php

@@ -13,7 +13,7 @@
  <pre>
 <?php foreach ($context->source() as $num => $line):
 
- $coverage = $context->coverage($num);
+ $coverage = $context->getRawObject()->coverage($num);
  echo '<span class="ln">';
     echo str_pad($num, 8, ' ', STR_PAD_LEFT);
     echo '</span>';