From ba6f3d8379fb9ee8d0f18e3e0d6d77386daf79c9 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Sat, 27 Mar 2021 23:22:38 +0000
Subject: lei mark: relax label requirements

It seems safe to use ALLCAPS labels like "INBOX" with Xapian.
We'll also allow single-character labels.
---
 lib/PublicInbox/LeiMark.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/PublicInbox/LeiMark.pm')

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 {
-- 
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