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Re: [PATCH] Add support for HTTP proxies

From: Taylan Ulrich B.
Subject: Re: [PATCH] Add support for HTTP proxies
Date: Wed, 12 Jun 2013 16:41:38 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (berkeley-unix)

address@hidden (Ludovic Courtès) writes:

> What about just:
>   (make-parameter (getenv "http_proxy"))

The empty-string case needs to be handled specially, no?  Perhaps:

  (define current-http-proxy
    (make-parameter (getenv "http_proxy")
                    (lambda (proxy)
                      (and (not (string-null? proxy))

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