[PATCH 1/2] learn: fix buggy typo on List-ID mapping

[Eric Wong <e@yhbt.net>]

There is obviously a typo here, so fix it and add a test
case to guard against future regressions.

Fixes: 74a3206babe0572a ("mda: support multiple List-ID matches")
---
 script/public-inbox-learn |  2 +-
 t/mda.t                   | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/script/public-inbox-learn b/script/public-inbox-learn
index a33d813ad01..0cb2c8e96e5 100644
--- a/script/public-inbox-learn
+++ b/script/public-inbox-learn
@@ -97,7 +97,7 @@ if ($train eq 'spam') {
 	}
 	my $dests = PublicInbox::MDA->inboxes_for_list_id($pi_config, $mime);
 	for my $ibx (@$dests) {
-		next if !$seen{"$ibx"}++;
+		next if $seen{"$ibx"}++;
 		remove_or_add($ibx, $train, $mime, $ibx->{-primary_address});
 	}
 }
diff --git a/t/mda.t b/t/mda.t
index 759c0b020ab..c7caf3e0cca 100644
--- a/t/mda.t
+++ b/t/mda.t
@@ -299,9 +299,17 @@ EOF
 	ok(run_script(['-mda'], undef, $rdr),
 		'mda OK with multiple List-Id matches');
 	$cur = $git->qx(qw(diff HEAD~1..HEAD));
-	like($cur, qr/Message-ID: <2lids\@example>/,
+	like($cur, qr/^\+Message-ID: <2lids\@example>/sm,
 		'multi List-ID match delivered');
 	like($err, qr/multiple List-ID/, 'warned about multiple List-ID');
+
+	# ensure -learn rm works after inbox address is updated
+	($out, $err) = ('', '');
+	xsys(qw(git config --file), $pi_config, "$cfgpfx.address",
+		'updated-address@example.com');
+	ok(run_script(['-learn', 'rm'], undef, $rdr), 'rm-ed via -learn');
+	$cur = $git->qx(qw(diff HEAD~1..HEAD));
+	like($cur, qr/^-Message-ID: <2lids\@example>/sm, 'changed in git');
 }
 
 done_testing();