Re: [PATCH v2 2/3] http: try http_proxy env var when http.proxy config option is not set

Jeff King [off-list ref] writes:

When we need to authenticate for the destination webserver, we detect an
HTTP 401, _then_ ask for the credentials, and retry the request. I'm
curious what the error condition is for the authentication failure, and
if we can do the same here.

Yeah, that would be ideal.