[Bug 265326] New: KMail does not delete outdated information from the cache files of the IMAP folders

[Sergey Y. Afonin]

https://bugs.kde.org/show_bug.cgi?id=265326

           Summary: KMail does not delete outdated information from the
                    cache files of the IMAP folders
           Product: kmail
           Version: 1.13.5
          Platform: Unlisted Binaries
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: IMAP
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: asy at kraft-s.ru


Version:           1.13.5 (using KDE 4.5.5) 
OS:                Linux

I found that the cache files contain information about the long-deleted
messages. For example I have folper "postmaster" with 52 messages. But

$ cat
~/.kde/share/apps/kmail/imap/.1499195625.directory/.INBOX.directory/postmaster
| grep "From " | wc -l
29538

In some case this files have size in hundreds Mb and processed too slow when
recreating indexes. This is a very old bug. I found the headers with date 2003
year.

Reproducible: Didn't try

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