Re: LSUB failure

[Sergey Poznyakoff]

> I can turn off lsub easy enough, but I'm wondering if we're doing the
> right thing?  I'm quite new to imap so please forgive errors. =)

Imap4d LSUB returns OK response only if file named
'.mailboxlist' exists in user's home directory. The file is
supposed to keep user's subscriptions, one per line.

> Evolution seems to not know how to subscribe to folders at all (so
> won't even list the inbox) without this result being succesful.  
> 
> Who's bad behaviour is this?

Well, RFC says that NO response must be returned on "lsub failure: can't
list that reference or name". For imap4d, failure to open ~/.mailboxlist
means that it is impossible to list any references, so it seems to
comply with RFC. But I'd propose it to return OK if ~/.mailboxlist
does not exist, this will make it coexist with programs that depend on
LSUB returning success:

Index: lsub.c
===================================================================
RCS file: /cvsroot/mailutils/mailutils/imap4d/lsub.c,v
retrieving revision 1.5
diff -p -u -w -b -r1.5 lsub.c
--- lsub.c      9 May 2001 04:23:52 -0000       1.5
+++ lsub.c      2 Apr 2002 08:25:04 -0000
@@ -60,5 +60,7 @@ imap4d_lsub (struct imap4d_command *comm
       fclose (fp);
       return util_finish (command, RESP_OK, "Completed");
     }
+  else if (errno == ENOENT)
+    return util_finish (command, RESP_OK, "Completed");
   return util_finish (command, RESP_NO, "Can not list subscriber");
 }

Regards,
Sergey