From: "Clément Pit--Claudel" <clement.pit@gmail.com>
To: Emacs developers <emacs-devel@gnu.org>
Subject: Why does url-retrieve ignore url-mime-accept-string and most other url variables?
Date: Tue, 29 Mar 2016 11:52:49 +0200 [thread overview]
Message-ID: <56FA5071.6080506@gmail.com> (raw)
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The doc string of url-retrieve says:
> The variables ‘url-request-data’, ‘url-request-method’ and
> ‘url-request-extra-headers’ can be dynamically bound around the
> request; dynamic binding of other variables doesn’t necessarily
> take effect.
What's the proper way, then, to set ‘url-mime-encoding-string’, ‘url-mime-charset-string’, and ‘url-mime-accept-string’ for a single query? In particular, how come things work with ‘url-retrieve-synchronously’, but not with ‘url-retrieve’?
More precisely: this sends a query with ‘Accept: */*’, and prints nil:
(let ((url-mime-accept-string "abc/def"))
(url-retrieve "http://www.gnu.org/software/emacs/"
(lambda (&rest _)
(message "url-retrieve: %S"
url-mime-accept-string))))
but this sends a query with ‘Accept: abc/def’, and prints “abc/def”:
(let ((url-mime-accept-string "abc/def"))
(with-current-buffer
(url-retrieve-synchronously
"http://www.gnu.org/software/emacs/")
(message "url-retrieve: %S"
url-mime-accept-string)))
Is that a bug? If not, could we document the proper way to set an Accept header?
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reply other threads:[~2016-03-29 9:52 UTC|newest]
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