From 5d39caaf83799ba3a94b73463a3597c181816425 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Tue, 4 Apr 2017 18:25:47 +0000
Subject: watchmaildir: do not reject lowercase flags on Maildir files

Dovecot uses 'a'..'z' (lowercase) to designate keywords
in Maildir flags.  This was preventing certain messages
from being marked as spam.

https://wiki2.dovecot.org/MailboxFormat/Maildir
---
 lib/PublicInbox/WatchMaildir.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/WatchMaildir.pm b/lib/PublicInbox/WatchMaildir.pm
index 1823c248..985f9192 100644
--- a/lib/PublicInbox/WatchMaildir.pm
+++ b/lib/PublicInbox/WatchMaildir.pm
@@ -97,7 +97,8 @@ sub _try_fsn_paths {
 
 sub _remove_spam {
 	my ($self, $path) = @_;
-	$path =~ /:2,[A-R]*S[T-Z]*\z/i or return;
+	# path must be marked as (S)een
+	$path =~ /:2,[A-R]*S[T-Za-z]*\z/ or return;
 	my $mime = _path_to_mime($path) or return;
 	_force_mid($mime);
 	$self->{config}->each_inbox(sub {
-- 
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