[kmail2] [Bug 433995] Attachments with accentuated characters in their file names are automatically renamed "attachment.bin"

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=433995

--- Comment #3 from martial at saunois.net ---
Hello Laurent

I use the Protonmail bridge, but it does not seem to be an SMTP issue because I
don't reproduce with Thunderbird. I have an old Gmail account somewhere, I can
try with it.

Here is the source of the sent email (without the file's content):

From: Martial Saunois <martial at saunois.net>
To: xxxxx
Subject: pdf3
Date: Fri, 05 Mar 2021 09:54:16 +0100
Message-ID: <1815530.R5LG11lME9 at soad>
X-KMail-Identity: xxxxx
X-KMail-Transport: xxxxx
X-KMail-Fcc: 20
X-KMail-Identity-Name: xxxxx
X-KMail-Transport-Name: Protonmail
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="nextPart8847928.zgmNX5ZPIN"
Content-Transfer-Encoding: 7Bit

This is a multi-part message in MIME format.

--nextPart8847928.zgmNX5ZPIN
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"


--nextPart8847928.zgmNX5ZPIN
Content-Disposition: attachment;
filename*=ISO-8859-1''Certificat%20m%E9dical%2Epdf
Content-Transfer-Encoding: base64
Content-Type: application/pdf; name*=iso-8859-1''Certificat%20m%E9dical%2Epdf

And here is the source of the received email:

Content-Type: multipart/mixed;
boundary=81facc3804535dd466211b0b92a1051892fb88e331a5678ccb006af1c8ed2fad
Date: Fri, 05 Mar 2021 08:54:17 +0000
Delivered-To: xxxxxxx
From: "Martial Saunois" <martial at saunois.net>
Message-Id: <1815530.R5LG11lME9 at soad>
Mime-Version: 1.0
Received: from mail.protonmail.ch by mail.protonmail.ch; Fri, 05 Mar 2021
08:54:22 +0000
References:
<avFRvPJH5FfVeYxzcjtBBouIKF1codwhO9v3qmOsL90yIu6ICMDprh9Lx25YeW0UTTxVuYVG38zXUQo4-qvv2g==@protonmail.internalid>
Reply-To: "Martial Saunois" <martial at saunois.net>
Return-Path: <martial at saunois.net>
Subject: pdf3
To: xxxxxx
X-Attached: attachment.bin
X-Original-To: xxxxxx
X-Pm-Content-Encryption: end-to-end
X-Pm-Conversationid-Id:
yDHE9UNFm9KVQ5qWc1PW-fSgq4W2rvLm1-RgciODL-i_fxQASQ4_9k0obst4sSqPU46B-Iuafg2_vEW4ZFdQ8A==
X-Pm-Date: Fri, 05 Mar 2021 09:54:17 +0100
X-Pm-External-Id: xxxxxx
X-Pm-Internal-Id: xxxxxx
X-Pm-Origin: internal
X-Pm-Spamscore: 0



--81facc3804535dd466211b0b92a1051892fb88e331a5678ccb006af1c8ed2fad
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset=utf-8


--81facc3804535dd466211b0b92a1051892fb88e331a5678ccb006af1c8ed2fad
Content-Disposition: attachment; filename=attachment.bin
Content-Transfer-Encoding: base64
Content-Type: application/pdf; name=attachment.bin

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