[kmail2] [Bug 313478] New: Kmail adds newlines to inline-gpg-signed messages

[Daniel Hornung]

https://bugs.kde.org/show_bug.cgi?id=313478

            Bug ID: 313478
           Summary: Kmail adds newlines to inline-gpg-signed messages
    Classification: Unclassified
           Product: kmail2
           Version: 4.9.3
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: crypto
          Assignee: kdepim-bugs at kde.org
          Reporter: daniel.hornung at gmx.de

When signing messages inline (no OpenPGP/MIME attachment), line endings in the
message are mixed between \n (Unix line ending) and \r\n (DOS line ending).
This equivalent to the output produced on the command line by 

  gpg --clearsign -a > test_output

The \r\n lines however do not arrive intact after sending: They seem to be
converted to \n\n (two newlines), which breaks the signature. The sent-messages
folder shows still a correct signature (with \r\n) but in the inbox the
signature is shown as invalid (since all newlines from the original message
have effectively doubled to \n\n).

This bug happens with several mail servers, it does not happen when sending the
content of the above mentioned file test_output manually with e.g. Python's
SMTP lib via the same mail servers.

Reproducible: Always

Steps to Reproduce:
1. Compose a multiline message.
2. Sign as Inline PGP.
3. Send message.
Actual Results:  
Each newline is doubled, GPG signatures are invalid.

Expected Results:  
Should not change newlines.

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