[Bug 302752] New: Signing emails interprets escape characters

[Daniel Hornung]

https://bugs.kde.org/show_bug.cgi?id=302752

            Bug ID: 302752
          Severity: major
           Version: 4.8.3
          Priority: NOR
          Assignee: kdepim-bugs at kde.org
           Summary: Signing emails interprets escape characters
    Classification: Unclassified
                OS: Linux
          Reporter: daniel.hornung at gmx.de
          Hardware: Gentoo Packages
            Status: UNCONFIRMED
         Component: composer
           Product: kmail2

When sending the following text to myself and signing it, the sequence "=97"
seems to interpreted as a non-ascii escape sequence and changed. This leads to
an unusable result on the receiving side and a corrupted gpg signature.

Reproducible: Sometimes

Steps to Reproduce:
1. Send this text to yourself and sign it.
2. Look into your sent mail folder (or inbox) and compare to what you typed in.
Actual Results:  
The text was changed.

Expected Results:  
Text should have stayed the same.

The message as I sent it:
===
http://www.procity.de/front_content.php?idcat=975
-- 
Mein öffentlicher Schlüssel / My public key: 4096R/600ACB3B 2012-04-01
Fingerabdruck / Fingerprint:
9902 575B B9A0 C339 CFDF  250B 9267 CA6B 600A CB3B
Runterladen z.B. bei/ Get it e.g. from:
pgp.mit.edu, subkeys.pgp.net, pgp.uni-mainz.de, pool.sks-keyservers.net, ...
===

And the message as changed by KMail (both sent and received):
===
http://www.procity.de/front_content.php?idcat—5

--

Mein öffentlicher Schlüssel / My public key: 4096R/600ACB3B 2012-04-01

Fingerabdruck / Fingerprint:

9902 575B B9A0 C339 CFDF  250B 9267 CA6B 600A CB3B

Runterladen z.B. bei/ Get it e.g. from:

pgp.mit.edu, subkeys.pgp.net, pgp.uni-mainz.de, pool.sks-keyservers.net, ...
===

This is the message source:
===
........
User-Agent: KMail/4.8.3 (Linux/3.3.8-gentoo; KDE/4.8.3; x86_64; ; )
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="iso-8859-1"
X-GMX-Antivirus: 0 (no virus found)
X-GMX-Antispam: 0 (Sender is in whitelist: daniel.hornung at gmx.de);
Detail=5D7Q89H36p4L00VTXC6D4q0N+AH0PUCnCmiMEemJMAnPYHVGrokQauYIUk2bZSU0Dwk9Q
AkhyxRsOC6ODbhPYA==V1;
X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.2

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

http://www.procity.de/front_content.php?idcat=975

- --=20

Mein =F6ffentlicher Schl=FCssel / My public key: 4096R/600ACB3B 2012-04=
-01

Fingerabdruck / Fingerprint:

9902 575B B9A0 C339 CFDF  250B 9267 CA6B 600A CB3B

Runterladen z.B. bei/ Get it e.g. from:

pgp.mit.edu, subkeys.pgp.net, pgp.uni-mainz.de, pool.sks-keyservers.net=
, ...
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
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v8cv
-----END PGP SIGNATURE-----

===

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