#! /bin/sh

[ -z "$TODO_FILE" ] && TODO_FILE=".todo"

if [ "$1" = "" ]; then
    cat "$TODO_FILE" 2>/dev/null
    exit 0
fi

mkdir -p "$(dirname "$TODO_FILE")"

if [ "$(echo "$*" | cut -c1)" = "-" ]; then
    exec 3< "$TODO_FILE" || exit 0

    pattern="$(echo "$*" | cut -c2-)"

    rm "$TODO_FILE"
    sed "/^$pattern/d" <&3 > "$TODO_FILE"
else
    echo "$*" >> "$TODO_FILE"
fi