Okay, that must have been why I didn't notice this. I was getting the old embed code -- perhaps YouTube had stored this as my preference at some point.
Re-opening. We should support the new and old embed code, by supporting scheme-relative URLs for iframes. This will probably require us rewriting the $cfg variable that stores the regular expression that checks for valid iframe URLs, and/or changing how we use htmlpurifier.
Okay, that must have been why I didn't notice this. I was getting the old embed code -- perhaps YouTube had stored this as my preference at some point.
Re-opening. We should support the new and old embed code, by supporting scheme-relative URLs for iframes. This will probably require us rewriting the $cfg variable that stores the regular expression that checks for valid iframe URLs, and/or changing how we use htmlpurifier.