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-rw-r--r--lib/PublicInbox/LeiLsMailSource.pm12
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/PublicInbox/LeiLsMailSource.pm b/lib/PublicInbox/LeiLsMailSource.pm
index 50799270..ab6c1e60 100644
--- a/lib/PublicInbox/LeiLsMailSource.pm
+++ b/lib/PublicInbox/LeiLsMailSource.pm
@@ -19,7 +19,8 @@ sub input_path_url { # overrides LeiInput version
         if ($url =~ m!\Aimaps?://!i) {
                 my $uri = PublicInbox::URIimap->new($url);
                 my $sec = $lei->{net}->can('uri_section')->($uri);
-                my $mic = $lei->{net}->mic_get($uri);
+                my $mic = $lei->{net}->mic_get($uri) or
+                        return $lei->err("E: $uri");
                 my $l = $mic->folders_hash($uri->path); # server-side filter
                 @$l = map { $_->[2] } # undo Schwartzian transform below:
                         sort { $a->[0] cmp $b->[0] || $a->[1] <=> $b->[1] }
@@ -39,8 +40,13 @@ sub input_path_url { # overrides LeiInput version
                 }
         } elsif ($url =~ m!\A(?:nntps?|s?news)://!i) {
                 my $uri = PublicInbox::URInntps->new($url);
-                my $nn = $lei->{net}->nn_get($uri);
-                my $l = $nn->newsgroups($uri->group); # name => description
+                my $nn = $lei->{net}->nn_get($uri) or
+                        return $lei->err("E: $uri");
+                # $l = name => description
+                my $l = $nn->newsgroups($uri->group) // return $lei->err(<<EOM);
+E: $uri LIST NEWSGROUPS: ${\($lei->{net}->ndump($nn->message))}
+E: login may be required, try adding `-c nntp.debug' to your command
+EOM
                 my $sec = $lei->{net}->can('uri_section')->($uri);
                 if ($json) {
                         my $all = $nn->list;