# HG changeset patch
# User Timo Sirainen <timo.sirainen@dovecot.fi>
# Date 1457672493 -46800
# Node ID 9234cb74bc17a200db82e8213af1dc33d7a96126
# Parent  c27d9577b06d425a844a611e660b0bae752742dc
lazy-expunge: If lazy_expunge is set to namespace root, save all mails to the root mailbox.

So the difference is:

namespace {
  prefix = expunged/
  ..
}
plugin {
  # Move expunged mails to expunged/INBOX, expunged/Trash, etc. mailboxes
  lazy_expunge = expunged/
  # Move all expunged mails to "expunged" mailbox, which is the namespace root.
  lazy_expunge = expunged
}

diff -r c27d9577b06d -r 9234cb74bc17 src/plugins/lazy-expunge/lazy-expunge-plugin.c
--- a/src/plugins/lazy-expunge/lazy-expunge-plugin.c	Fri Mar 11 17:57:41 2016 +1300
+++ b/src/plugins/lazy-expunge/lazy-expunge-plugin.c	Fri Mar 11 18:01:33 2016 +1300
@@ -31,6 +31,7 @@
 	union mail_user_module_context module_ctx;
 
 	struct mail_namespace *lazy_ns;
+	const char *lazy_mailbox_vname;
 	const char *env;
 	bool copy_only_last_instance;
 };
@@ -69,9 +70,14 @@
 static const char *
 get_dest_vname(struct mailbox_list *list, struct mailbox *src_box)
 {
+	struct lazy_expunge_mail_user *luser =
+		LAZY_EXPUNGE_USER_CONTEXT(list->ns->user);
 	const char *name;
 	char src_sep, dest_sep;
 
+	if (luser->lazy_mailbox_vname != NULL)
+		return luser->lazy_mailbox_vname;
+
 	/* use the (canonical / unaliased) storage name */
 	name = src_box->name;
 	/* replace hierarchy separators with destination virtual separator */
@@ -435,6 +441,13 @@
 		return;
 
 	luser->lazy_ns = mail_namespace_find_prefix(namespaces, luser->env);
+	if (luser->lazy_ns == NULL) {
+		/* see if it's set to namespace root itself. in that case we
+		   store all the expunged mails to the namespace root. */
+		luser->lazy_ns = mail_namespace_find_prefix_nosep(namespaces, luser->env);
+		luser->lazy_mailbox_vname = p_strndup(namespaces->user->pool,
+			luser->lazy_ns->prefix, luser->lazy_ns->prefix_len-1);
+	}
 	if (luser->lazy_ns == NULL)
 		i_fatal("lazy_expunge: Unknown namespace: '%s'", luser->env);
 	mail_namespace_ref(luser->lazy_ns);