How to avoid colons in file names?

[Felix E. K. <fel...@in...>]

I set up mbsync on a Linux system. The Maildir store would be synced to
Windows. However, Windows doesn’t like colons in file names. So I tried
enabling *alternative scheme*, hoping that this would lead to simpler
file names.

However, file names still contain colons:

    $ ls -1 sync_test/INBOX/cur/ | head -3
    1398199972.1938_1.linux:2,S
    1398199972.1938_2.linux:2,S
    1398199972.1938_3.linux:2,S

*Can I tell `mbsync` not to use colons in file names?*

My `.mbsyncrc` for creating a backup of one of my Gmail accounts:

    IMAPAccount gmail
    Host imap.gmail.com
    User fe...@f7...
    PassCmd "/bin/cat /secret/gmail_password"
    UseIMAPS yes
    CertificateFile ~/.mbsync/Equifax_Secure_Certificate_Authority.pem

    IMAPStore gmail-imap
    Account gmail

    MaildirStore gmail-local
    Path "~/sync_test"
    Inbox "~/sync_test/INBOX"
    AltMap yes

    Channel gmail
    Master ":gmail-imap:[Gmail]/All Mail"
    Slave :gmail-local:INBOX
    Create Slave
    Expunge Slave
    Sync Pull