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[VM] MIME displaying errors

From: Uday Reddy
Subject: [VM] MIME displaying errors
Date: Thu, 31 Mar 2011 11:03:53 +0100
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20110303 Thunderbird/3.1.9

This is a bit of a tricky issue.

If an error is encountered while displaying a MIME attachment, e.g., file not found, error in an external viewer., VM has been designed to write that error message into an internal field and continue silently. We might call this "aggressive error recovery".

To test this behavior, you might for instance save an attachment into a file, then rename the file to something else. Now, if you click on the attachment, you would expect to get a "file not found" error. Instead, VM fires up the external viewer as if everything is normal and passes it some dummy text. What the external viewer might do in response is anybody's guess.

It seems to me that this kind of aggressive error recovery is not desirable. But this is the behavior that VM has always had. Does anybody know why VM was designed to work this way?


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