Problem with accented characters in mailbox.Maildir()

[Chris Green]

A bit more information, msg.get("subject", "unknown") does return a
string, as follows:-

    Subject: =?utf-8?Q?aka_Marne_=C3=A0_la_Sa=C3=B4ne_(Waterways_Continental_Europe)?=

So it's the 'searchTxt in msg.get("subject", "unknown")' that's
failing. I.e. for some reason 'in' isn't working when the searched
string has utf-8 characters.  

Surely there's a way to handle this.

-- 
Chris Green
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