#!/bin/sh
if [ $# -lt 2 ]; then >&2 echo Usage: "$0" bibtex-id [ -a author ] title; exit 1; fi
name="$(mktemp)"
exec 3>&1 >"$name"
id="$1"
shift
if mathid -d mzadg -x printf ' %s' --- "$@"; then
  if [ -s "$name" ]; then
    exec 1>&3
    printf '%s' "$id"
    cat "$name"
    printf '\n'
  fi
fi