Comment 11 for bug 1433761

@miskokot

Probably best to open this up in a new bug report if you think there is an error. However, I can at least confirm that having http_proxy and https_proxy set does yield connections to my proxy with apt-add-repository

root@bionic:~# http_proxy=http://10.5.0.5:8000 https_proxy=http://10.5.0.5:8000 apt-add-repository ppa:canonical-kernel-team/ppa

Notice, that your example has you doing an 'echo $http...' to prove that things are set, however that doesn't show if the variable is exported (available to suprocesses).