about summary refs log tree commit homepage
path: root/lib/PublicInbox/LeiToMail.pm
diff options
context:
space:
mode:
Diffstat (limited to 'lib/PublicInbox/LeiToMail.pm')
-rw-r--r--lib/PublicInbox/LeiToMail.pm4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/PublicInbox/LeiToMail.pm b/lib/PublicInbox/LeiToMail.pm
index de75e99e..008da52e 100644
--- a/lib/PublicInbox/LeiToMail.pm
+++ b/lib/PublicInbox/LeiToMail.pm
@@ -407,7 +407,9 @@ sub new {
                 $lei->{opt}->{save} //= \1 if $lei->{cmd} eq 'q';
         } elsif (substr($fmt, 0, 4) eq 'mbox') {
                 require PublicInbox::MboxReader;
-                $self->can("eml2$fmt") or die "bad mbox format: $fmt\n";
+                $self->can("eml2$fmt") or die <<EOM;
+E: bad mbox format: $fmt (did you mean: mboxrd, mboxo, mboxcl, or mboxcl2?)
+EOM
                 $self->{base_type} = 'mbox';
                 if ($lei->{cmd} eq 'q' &&
                                 (($lei->path_to_fd($dst) // -1) < 0) &&