Actually, I think that the solution you adopted was correct even in
principle: attachments are part of an inbound email message, and should
not be overwritten. If nothing else, what if for some reason the message
was refetched from the IMAP server? What if you look at the attachment
from one device, which does its own IMAP fetches, after editing it on
another? I'd always assumed that attachments were locked; I was glad
when MailMate finally implemented it.
On 26 Jan 2023, at 6:16, Benny Kjær Nielsen wrote:
On 7 Jan 2023, at 13:35, Robert M. Münch wrote:
I see this effect I think since I use 5933.
The change is in r5927 (November 10th, 2022).
I do exactly the same as in the past, but now is looks like files are
somehow locked by MM. Checking the file attributes I see that the
*Immutable* flag is set.
Is this a known problem? How to fix/workaround it?
I can see this developed into a very large thread. Someone found the
workaround, but I repeat it here to make sure it's more easily found:
defaults write com.freron.MailMate
MmAttachmentsCacheImmutableStateDisabled -bool YES
But it's only to be used by users who understand that attachments are
saved in a *temporary* location which can be deleted at any time. It
just doesn't happen very often.
I can add that the change was motivated by a user working on a
document for weeks (possibly hundreds of hours). The corresponding
email was later deleted and MailMate cleaned up by also removing
temporary files related to the email. Note that the cache is not part
of a Time Machine backup. The file could not be salvaged.
I have some notes on how this behavior could be improved, but the
quick/safest fix was to simply disallow it.
--
Benny
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—Steve Bellovin, https://www.cs.columbia.edu/~smb
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