[Users] [Bug 3629] New: Invalid subject can distort message list view

[noreply at thewildbeast.co.uk]

http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=3629

            Bug ID: 3629
           Summary: Invalid subject can distort message list view
    Classification: Unclassified
           Product: Claws Mail
           Version: 3.13.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: UI/Message List
          Assignee: users at lists.claws-mail.org
          Reporter: hanno at hboeck.de

Created attachment 1636
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http://www.thewildbeast.co.uk/claws-mail/bugzilla/attachment.cgi?id=1636&action=edit
mail with invalid subject triggering bug

I discovered something odd: A mail I got that had an obviously invalid subject
containing multiple encodings and a probably invalid utf-8 character
(quoted-printable encoded) was displayed as a multiline subject in the message
list.

This obviously distorts the view, because a multiline subject will spread over
other messages in the list. I have attached a sample message and a screenshot
of the phenomen.

This is an example subject line causing this:
Subject: =?utf-8?Q?YYYYYYYYYYYYYYYY=E2=80=A8?=
 =?utf-8?Q?YYYYYYYYYYYYYYYY=E2=80=A8?= =?utf-8?Q?YYYYYYYYYYYYYYYY=E2=80=A8?=

Not sure why this happens, but it seems obvious that claws-mail should not try
to render multiple lines in the subject of the message list.

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