#! /bin/sh
# grep for stuff in each message from mailboxes, sending
# matching messages to stdout.
# 

regexp=${1?}
maild=${2:-$HOME/Mail}

tmp=$HOME/tmp
if test ! -d $tmp; then
	mkdir $tmp || exit 1
fi

# temporary scripts
s1=$tmp/s1-$$
s2=$tmp/s2-$$

# duplicate database for formail
dups=$tmp/dups-$$
: > $dups

cat <<'EOF' | sed -e "s!@XregexpX@!$regexp!" -e "s!@XtmpX@!$tmp!g" > $s1
cat > @XtmpX@/m-$FILENO
if test "`egrep -i '@XregexpX@' @XtmpX@/m-$FILENO`"; then
	printf "+" 1>&2
	cat @XtmpX@/m-$FILENO
else
	printf "-" 1>&2
fi
rm @XtmpX@/m-$FILENO
EOF

cat <<'EOF' | sed -e "s!@Xs1X@!$s1!" -e "s!@XdupsX@!$dups!" > $s2
cat $* | formail -D 10000000 @XdupsX@ -s sh @Xs1X@
EOF

trap "rm -f $s1 $s2 $dups" 2
find $maild -type f -print0 | xargs -0 -n 20 sh $s2
echo 1>&2
rm -f $s1 $s2 $dups