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#! /bin/sh
set -euf
# require flock from util-linux
if test "${FLOCK-}" != "$state_file"; then
exec env FLOCK="$state_file" flock "$state_file" "$0" "$@"
fi
from="$_prefix"
to="$1"; shift
msg="$*"
date=$(date)
# TODO tell now, if already joined
printf '%s %s <%s> %s\n' "$to" "$from" "$date" "$msg" >> "$state_file"
echo 'Consider it noted.' # that's what lambdabot says...
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