* Gnus doubles MIME tags
@ 2009-06-22 12:11 Katsumi Yamaoka
0 siblings, 0 replies; only message in thread
From: Katsumi Yamaoka @ 2009-06-22 12:11 UTC (permalink / raw)
To: emacs-pretest-bug; +Cc: ding
Hi,
You might have ever seen a MIME tag in the Gnus article buffer
like this:
[2.
non-ascii-filename.pdf --- application/pdf; non-ascii-filename.pdf]...
Note that the tag is broken into two lines.
In such a case, typing the `E' command there to display
the attachment externally doubles the tag like:
[2.
non-ascii-filename.pdf --- application/pdf; non-ascii-filename.pdf]...
non-ascii-filename.pdf --- application/pdf; non-ascii-filename.pdf]...
or
[2.
[2.
non-ascii-filename.pdf --- application/pdf; non-ascii-filename.pdf]...
I found this is due to M$'s MIME encoder. In the raw form,
the MIME header it made looks like this:
Content-Description:
=?iso-8859-1?Q?non-ascii-filename.pdf?=
It's ugly but is not a bug. Gnus decodes it including the first
newline and displays it in the MIME tag as is. However, Gnus
works properly only with a MIME tag drawn in a single line.
The following patch solves it. It uses `message-fetch-field'
that strips newlines instead of `mail-fetch-field'.
(I don't know how I commit it to the Emacs trunk and also
the branches, so I post it here.)
2009-06-22 Katsumi Yamaoka <yamaoka@jpl.org>
* mm-decode.el (mm-dissect-buffer): Use message-fetch-field instead of
mail-fetch-field to fetch Content-Description header in order to
exclude newlines.
--- mm-decode.el~ 2009-01-22 08:09:02 +0000
+++ mm-decode.el 2009-06-22 11:52:50 +0000
@@ -563,7 +563,7 @@
ctl (and ct (mail-header-parse-content-type ct))
cte (mail-fetch-field "content-transfer-encoding")
cd (mail-fetch-field "content-disposition")
- description (mail-fetch-field "content-description")
+ description (message-fetch-field "content-description")
id (mail-fetch-field "content-id"))
(unless from
(setq from (mail-fetch-field "from")))
Regards,
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