From d66aa534a4a7506cfc5cfab49d1e09f8db8be3dd Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Wed, 16 Jan 2019 04:51:28 +0000
Subject: nntp: header responses use CRLF consistently

Alpine is apparently stricter than other clients I've tried
w.r.t. using CRLF for headers.  So do the same thing we do for
bodies to ensure we only emit CRLFs and no bare LFs.

Reported-by: Wang Kang <i@scateu.me>
  https://public-inbox.org/meta/alpine.DEB.2.21.99.1901161043430.29788@la.scateu.me/
---
 lib/PublicInbox/NNTP.pm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/PublicInbox/NNTP.pm b/lib/PublicInbox/NNTP.pm
index 623ffd35..63d5870b 100644
--- a/lib/PublicInbox/NNTP.pm
+++ b/lib/PublicInbox/NNTP.pm
@@ -515,6 +515,7 @@ sub set_art {
 sub _header ($) {
 	my $hdr = $_[0]->header_obj->as_string;
 	utf8::encode($hdr);
+	$hdr =~ s/(?<!\r)\n/\r\n/sg;
 	$hdr
 }
 
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