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Trojitá, an e-mail client, tries to sanitize non-printable and whitespace characters at various places such as message subjects, senders, etc. Your job is to look into this really hard and to check that we have not missed any place where, for example, an extra-long sequence of newline ("Enter") characters, or the Unicode box drawing, would cause havoc.

How to approach this task

• ensure that you have done your first Trojitá task already
• read the bugreport and check if it's interesting for you to solve it : https://bugs.kde.org/show_bug.cgi?id=360205
• create malicious e-mails, inject them to your IMAP account (maybe a testing one?), check how Trojita renders them
• report back in the bugreport

Need help?

• KDE and Qt both have documentation, please read it.
• Using search engines such as Google helps answer many questions.
• We are always happy to help, and we use IRC for that.