Update of bug #45443 (project wget):
Status: None => Wont Fix
Assigned to: None => rockdaboot
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Follow-up Comment #1:
I cite Daniel Stenberg (curl maintainer/developer) from the mailing list
[email protected], Tue, 30 Jun 2015 11:20:28 +0200 (CEST):
"The reason some tools don't accept "HTTP_PROXY" and only "http_proxy" is that
the CGI interface from back in the old days provide headers from the incoming
request to the CGI program prefixed with "HTTP_".
Thus, running a CGI script from a server, an incoming "Proxy:" header (which
normally doesn't do anything) would be sent to the program as "HTTP_PROXY",
leading to confusions or in the worst case some sort of attack.
The CGI interface is an ancient thing, probably boardering to extinction.
Still it is out there and some such CGIs probably use wget.
Incidently, curl also only accepts the lower case version of this environment
variable and I believe it goes for some other related tools as well."
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