dovecot - Apr 2003 - Why can't hierarchy sep be changed?

>From: Charlie Brady <charlieb at e-smith.com>
There's something wrong with manually accepting posts from
non-subscribed addresses now, they're just left to queue directory for
some reason.. Please try to keep the From-address the same as the
subscribed one.
> >From maildir-storage.c:
> 
> ...
>         '.', /* hierarchy_sep - can't be changed */
> ...
> 
> Why can't it be changed? Is this just for courier compatibility, or is 
> there a deeper reason why it can't be changed?
Actually I'm going to change it to '/' to allow folders such as
shared/timo.sirainen/mailbox. The directory names themselves will still
contain '.' separator to stay compatible with Courier's Maildir++
format. So even though new IMAP separator will be '/', '.' still
can't
be used in mailbox names.

On 7 Apr 2003, Timo Sirainen wrote:
> > >From maildir-storage.c:
> > 
> > ...
> >         '.', /* hierarchy_sep - can't be changed */
> > ...
> > 
> > Why can't it be changed? Is this just for courier compatibility,
or is
> > there a deeper reason why it can't be changed?
> 
> Actually I'm going to change it to '/' to allow folders such as
> shared/timo.sirainen/mailbox. The directory names themselves will still
> contain '.' separator to stay compatible with Courier's
Maildir++
> format. So even though new IMAP separator will be '/', '.'
still can't
> be used in mailbox names.
I don't care about Courier compatibility (speaking just for myself - no 
flames please), and I do want '.' in mailbox names. Will that be easy
for
me?

And just to repeat my question - is the only reason that '.' is
unwelcome
Courier compatibility?

--
Charlie