Bug 285301 - Subject line in message list unescaped twice
Summary: Subject line in message list unescaped twice
Status: RESOLVED FIXED
Alias: None
Product: kmail2
Classification: Applications
Component: message list (show other bugs)
Version: 4.7
Platform: Ubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-10-30 09:57 UTC by Gunter Ohrner
Modified: 2016-09-24 23:37 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:

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Double-decoding of subject string in message list. The string as shown in the message window is actually correct, as the subject was encoded twice by accident. (6.21 KB, image/png)
2011-10-30 09:57 UTC, Gunter Ohrner 		Details
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Description Gunter Ohrner 2011-10-30 09:57:02 UTC 
Created attachment 65035 [details]
Double-decoding of subject string in message list. The string as shown in the message window is actually correct, as the subject was encoded twice by accident.

Version:           4.7 (using KDE 4.7.2) 
OS:                Linux

The subject line display in the message list apparently gets unescaped / decoded too often. I don't know if this could have negative effects if the first decoding pass yields strings with special characters.
This seems to happen always.

Reproducible: Always

Steps to Reproduce:
I have some mails with a messed-up subject line that somehow got encoded twice in quoted-printable encoding:

Subject: =?UTF-8?Q?=3D=3Fiso-8859-15=3FQ=3FTODO!=5F=28update=29=5FWRT-Verfugebar?= =?UTF-8?Q?keitsberechnung=5Fbeginnt=5Fzu=5Ffr=3DFCh=3F=3D?=


Actual Results:  
This string is (correctly) displayed as "=?iso-8859-15?Q?TODO!_(update)_WRT-Verfugebarkeitsberechnung_beginnt_zu_fr=FCh?=" in the message header as shown in the message window. The outermost encoding has been decoded, showing the embedded string which also is encoded.
The message list, however, shows a completely decoded string only containing the original clear text, as if the subject had been encoded only once. (See screenshot.)

Expected Results:  
The message list should show the subject the same way as the message window does.
Comment 1 Laurent Montel 2011-10-30 11:19:03 UTC 
could you send me in private your message please ? (if possible)
Comment 2 Gunter Ohrner 2011-10-30 13:50:21 UTC 
Sent to you by mail.
Comment 3 Laurent Montel 2012-03-26 07:03:36 UTC 
still valid in last kdepim ?
Comment 4 Gunter Ohrner 2012-05-15 19:31:21 UTC 
Still valid in:

KMail, Version 4.8.2, Unter KDE 4.8.2 (4.8.2)

I just received a new mail which shows this behaviour:

Actual subject header:

Subject: =?UTF-8?Q?=3D=3Futf-8=3FB=3FR2VzY2jDpGZ0c21vZGVsbGUgaW4gZGVyIFNvZnR3YXJ?= =?UTF-8?Q?laW5kdXN0cmllOiBFaW5lIFVtZnJhZ2UgZGVyIFRVIERhcm1zdGFkdA=3D=3D?= =?UTF-8?Q?=3F=3D?=

In the message window, this is correctly displayed as:

=?utf-8?B?R2VzY2jDpGZ0c21vZGVsbGUgaW4gZGVyIFNvZnR3YXJlaW5kdXN0cmllOiBFaW5lIFVtZnJhZ2UgZGVyIFRVIERhcm1zdGFkdA==?=

In the message list, it's fully decoded and readable, which I consider to be wrong.
Comment 5 Denis Kurz 2016-09-24 18:07:06 UTC 
This bug has only been reported for versions before 4.14, which have been unsupported for at least two years now. Can anyone tell if this bug still present?

If noone confirms this bug for a Framework-based version of kmail2 (version 5.0 or later, as part of KDE Applications 15.12 or later), it gets closed in about three months.
Comment 6 Gunter Ohrner 2016-09-24 23:37:35 UTC 
Apparently fixed in kMail 5.3.x.