From 8feae882e53e453bc7e8a290a66c4ebcb984e501 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Thu, 10 Oct 2019 10:16:18 +0200
Subject: sendmailadvanced.in: auto-insert spacing lines for headers/footers
 (will mangle successing linebreaks in header-/footer-output, too)

---
 sendmailadvanced.in | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/sendmailadvanced.in b/sendmailadvanced.in
index 5e5a58e..b3433b4 100755
--- a/sendmailadvanced.in
+++ b/sendmailadvanced.in
@@ -228,11 +228,29 @@ fi
     (
       for hookParam in "${hooks[@]}"; do
         "#ETCDIR#/sendmailadvanced.hooks/${hookParam}" head
-      done
+        echo
+      done \
+      | sed '
+        /^$/ {
+          :a
+          N
+          s@^\n$@@
+          ta
+        }
+      '
       cat
       for hookParam in "${hooks[@]}"; do
         "#ETCDIR#/sendmailadvanced.hooks/${hookParam}" foot
-      done
+        echo
+      done \
+      | sed '
+        /^$/ {
+          :a
+          N
+          s@^\n$@@
+          ta
+        }
+      '
     ) | \
     if ${encrypt}; then
       (
-- 
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