zlib plugin doesn't add "Z" flag to Maildir filename

[Tom Sommer]

On 2016-03-10 15:00, Alessio Cecchi wrote:
> Il 10/03/2016 10:38, Tom Sommer ha scritto:
>> I enabled zlib compression, so new mails are saved compressed.
>> 
>> Now I want to convert the old mails to gzip with the find and gzip
>> command, but now I don't know which files are already gzip compressed 
>> by
>> dovecot.
> 
> Simple check if the file is already compress (es. if gzip -t
> "${MAILFILE}" 2> /dev/null".

Thanks. I worked around it with `file`.

>> Shouldn't zlib_save itself add Z to the Maildir flags? As suggested in
>> the compress guide on http://wiki2.dovecot.org/Plugins/Zlib ?
>> 
> 
> No, zlib plugins only compress email without chaning the name.

I know, I'm suggesting it _should_ change the Maildir flag.

> I suggest to do not use script that rename email files because they
> can invalid the uidlist.

I don't think adding a Maildir flag does that. If it does, then the wiki 
should be changed.

// Tom