NOTE: This needs to be tested by someone who can access their site's localcache directory. Testing mustache revision update In your local terminal, open your site's mustache localcache, the path will be something like ~moodles/ {site_name}/moodledata/localcache/mustache/ View the mustache directory contents, and note down the subdirectory name (now referred to as rev1). If there is more than one, note down the one whose name is the largest number. Log into your test Moodle site as admin. Navigate to Site admin > Appearance > click 'Boost'. Click 'Advanced settings' and add some scss to 'Raw SCSS' (eg .blah { float: left; }) and click 'Save changes'. Return to your terminal, and again view the contents of the mustache directory, to check the revision directories that exist there. CONFIRM there is only subdirectory present, and CONFIRM the subdirectory is a larger number than rev1.