#! /bin/sh
set -e

DRAFT=`tempfile`

cat >$DRAFT <<EOF
From: Colin Watson <cjwatson@debian.org>
To: $2@bugs.debian.org
Cc: control@bugs.debian.org
Subject: $1: Proposed NMU diff
Fcc: =debian/nmus

tags $2 patch
thanks

Here's a patch fixing this bug. If I don't hear anything, I'll upload
this as an NMU in a week or so.

EOF

if [ -n "$4" ]; then
    debdiff $3 $4 >>$DRAFT
else
    cat $3 >>$DRAFT
fi

cat >>$DRAFT <<EOF

Regards,
EOF

mutt -H $DRAFT

rm -f $DRAFT

exit 0