We should look at removing this from our setup.php:
I have been having issues using an external lib that relies on http_build_query() using the default handling of the argument - & not & nbsp ;
We also tell http_build_query explicitly to use the normal default value of & in many areas of our code eg:
In Telegram chat - Andrew found this:
(Looks like all of the & have been converted to & in the article making it nonsense - but - at some point in the past, PHP docs incorrectly stated that & nbsp; should be set for XHTML compliance.)
We should look at removing this.