From b2e5fe4499ea853ff112a94d9447a5ec90179e44 Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Wed, 17 Feb 2021 11:27:11 +0300
Subject: [PATCH] sendmail.sh example

---
 doc/integration.texi | 5 ++++-
 doc/sendmail.sh      | 6 ++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100755 doc/sendmail.sh

diff --git a/doc/integration.texi b/doc/integration.texi
index 098e877..84698cc 100644
--- a/doc/integration.texi
+++ b/doc/integration.texi
@@ -71,7 +71,10 @@ information will be lost. Possibly you will also need somehow to
 preserve that header on the receiving side, because @command{sendmail}
 command will replace it. For example you can rename it before feeding to
 @command{sendmail} with
-@code{reformail -R Return-Path: X-Original-Return-Path: | sendmail}.
+@code{reformail -R Return-Path: X-Original-Return-Path: | sendmail}, or
+extract with:
+
+@verbatiminclude sendmail.sh
 
 @item Specify that mail for @emph{example.com}, should be delivered via
 NNCP, to a host named @emph{nncp-host}:
diff --git a/doc/sendmail.sh b/doc/sendmail.sh
new file mode 100755
index 0000000..b826091
--- /dev/null
+++ b/doc/sendmail.sh
@@ -0,0 +1,6 @@
+#!/bin/sh -e
+
+tmp=`mktemp`
+trap "rm -f $tmp" HUP PIPE INT QUIT TERM EXIT
+cat > $tmp
+sendmail -f "`reformail -x Return-Path: < $tmp`" $@ < $tmp
-- 
2.44.0