See public-inbox-compact(1) man page for full documentation.
EOF
-GetOptions($opt, qw(all help|h),
+GetOptions($opt, qw(all C=s@ help|h),
# compact options:
qw(jobs|j=i quiet|q blocksize|b=s no-full|n fuller|F),
) or die $help;
require PublicInbox::Admin;
PublicInbox::Admin::require_or_die('-index');
+PublicInbox::Admin::do_chdir(delete $opt->{C});
PublicInbox::Admin::progress_prepare($opt);
require PublicInbox::InboxWritable;