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-rw-r--r--lib/PublicInbox/LeiMark.pm2
-rw-r--r--t/lei-mark.t6
2 files changed, 7 insertions, 1 deletions
diff --git a/lib/PublicInbox/LeiMark.pm b/lib/PublicInbox/LeiMark.pm
index 6d236411..34846b84 100644
--- a/lib/PublicInbox/LeiMark.pm
+++ b/lib/PublicInbox/LeiMark.pm
@@ -23,7 +23,7 @@ my %ERR = (
                 my ($label) = @_;
                 length($label) >= $L_MAX and
                         return "`$label' too long (must be <= $L_MAX)";
-                $label =~ m{\A[a-z0-9_][a-z0-9_\-\./\@,]*[a-z0-9]\z} ?
+                $label =~ m{\A[a-z0-9_](?:[a-z0-9_\-\./\@,]*[a-z0-9])?\z}i ?
                         undef : "`$label' is invalid";
         },
         kw => sub {
diff --git a/t/lei-mark.t b/t/lei-mark.t
index 23f5002e..7855839e 100644
--- a/t/lei-mark.t
+++ b/t/lei-mark.t
@@ -78,6 +78,12 @@ test_lei(sub {
         lei_ok(qw(ls-label));
         is($lei_out, "nope\nqp\nurgent\n", 'ls-label shows qp');
 
+        lei_ok qw(mark -F eml t/utf8.eml +L:INBOX +L:x); diag $lei_err;
+        lei_ok qw(q m:testmessage@example.com);
+        $check_kw->([qw(answered seen)], L => [qw(INBOX nope urgent x)]);
+        lei_ok(qw(ls-label));
+        is($lei_out, "INBOX\nnope\nqp\nurgent\nx\n", 'ls-label shows qp');
+
         if (0) { # TODO label+kw search w/ externals
                 lei_ok(qw(q L:qp), "mid:$mid", '--only', "$ro_home/t2");
         }