[MlMt] 5933: Dragging files into a folder => files are locked (immutable set)

[Benny Kjær Nielsen]

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
https://freron.com/become_a_mailmate_patron/
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