On Fri, 08 Apr 2022, Max Nikulin wrote: > Notice that the default file name to save the message has ".mbox" > suffix while freedesktop mime database entry assumes ".eml" for the > "message/rfc822" mime type: > https://sources.debian.org/src/shared-mime-info/1.10-1/freedesktop.org.xml.in/#L5466 > As a result if "message/rfc822" mime type is associated with > thunderbird.desktop file then the application starts composition of a > new message with the .mbox file as attachment instead of displaying > the downloaded message.
> I have not managed to convince thunderbird developers that there > should be a way to tell the application that some file should be > opened namely as a message no matter what is the name and the > extension of the file. They believe that current heuristics is correct > and ".mbox" suffix means collection of messages in "application/mbox" > mail box. Thunderbird does not support opening a mbox file outside of > its mail directories. The only real difference between a single message in an mbox and a complete mbox is From escaping. Debbugs is probably technically incorrect, because we do From escaping even if we're returning just a single message, so we're actually returning an application/mbox instead of a message/rfc822. Frankly, using the extension to determine mime time is bad practice, but it's a common bad practice. I've no objection to changing the default extension; I personally wasn't aware of the eml extension when I wrote that part of the code. We should also not do From escaping when we're just returning a single message. -- Don Armstrong https://www.donarmstrong.com The terrorist's job is to terrorize the people, to interfere with freedom in such a way that disrupts ordinary life and commerce. With due respect, it is clear that the above referenced governmental agencies are aiding the terrorists' objective. -- Gary Fielder in Gary Fielder vs Janet Napolitano et al.
