HTTP push not respecting .netrc

[David Borowitz <dave@bwitz.com>]

Hi all,

I'm trying to push to a smart HTTP remote using the following command line:
http_proxy=localhost:4242 git push -v http://xxxxx:25989/git/foo
+refs/heads/*:refs/heads/*
(The weird proxy and port are not under my control.)

The webserver should return 401 for unauthorized access, and indeed it does:
error: RPC failed; result=65, HTTP code = 401
(The rest of the error text from git push is not particularly useful,
but I'm not worried about that at the moment.)

Making a request manually with curl --netrc shows that the auth header
is being sent[1]. But sniffing the HTTP traffic from git shows that
the auth header is not sent[2].

I also tried various other things like aliasing xxxxx to 127.0.0.1 and
removing the proxy and port number, and specifying user@xxxxx in the
URL, and nothing I've done makes git send the necessary auth header.
(In the last case it does prompt for a password.)

Anyone have any other ideas? I could swear this was working a few
weeks ago, so I must be missing something simple.

[1]
$ http_proxy=localhost:4242 curl -vvn
http://xxxxx:25989/git/foo/info/refs?service=git-receive-pack
* About to connect() to proxy localhost port 4242 (#0)
*   Trying ::1... Connection refused
*   Trying 127.0.0.1... connected
* Connected to localhost (127.0.0.1) port 4242 (#0)
* Server auth using Basic with user 'yyyyy'         <----
> GET http://xxxxx:25989/git/foo/info/refs?service=git-receive-pack HTTP/1.1
> Authorization: Basic zzzzzzzz          <----
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: xxxxx:25989
> Accept: */*
> Proxy-Connection: Keep-Alive
>
< HTTP/1.1 200 OK
...


[2]
GET http://xxxxx:25989/git/foo/info/refs?service=git-receive-pack HTTP/1.1
User-Agent: git/1.7.4.rc0
Host: xxxxx:25989
Accept: */*
Proxy-Connection: Keep-Alive
Pragma: no-cache