#! /bin/bash
set -e

if ([ "$1" != subscribe ] && [ "$1" != unsubscribe ]) || \
	[ -z "$2" ] || [ -z "$3" ]; then
    echo "Usage: $0 subscribe|unsubscribe list address" 2>&1
    exit 1
fi

ACTION="$1"
LIST="${2%%@*}"
ADDRESS="$3"

DRAFT=`tempfile`
trap 'rm -f "$DRAFT"' EXIT ERR HUP INT QUIT TERM

cat >"$DRAFT" <<EOF
From: Colin Watson <$ADDRESS>
To: $LIST-request@lists.debian.org
Subject: $ACTION $ADDRESS
Fcc: =debian/lists

$ACTION $ADDRESS
EOF

mutt -H "$DRAFT"

exit 0