#!/bin/sh

p=$(basename "$0")
t=$HOME/TODO

test -f "$t" || {
	printf "%s: %s: no such file\n" "$p" "$t" >/dev/stderr;
	exit 1;
}

case $# in
	0) key=${PWD#$HOME/} ;;
	1) key=${1#$HOME/} ;;
	*) printf "usage: %s (key)" "$p" >/dev/stderr; exit 1;;
esac

test "$HOME" = "$key" && key=""
grep "^$key" "$t" | sed -n "/^\t/!p"