# usage:
#   t             # todo -list
#   t "fix app"   # todo -add "fix app"
#   t 13          # todo -check 13
#   t 1 2 3       # todo -check 1 2 3
#   t -clear      # todo -clear
#   t -h          # todo -h
function t
    if not type -q todo
        echo "> can't find `todo` in PATH"
        return 1
    end
    if [ -z "$argv" ] # no arguments
        todo -list
    else
        set -l arg $argv[1]
        if test (string sub -l 1 -- $arg) = "-" # starts with -, pass to todo
            todo $argv
        else if string match --quiet --regex '\d' (string sub -l 1 -- $arg) # arg is number
            todo -check $argv
        else
            todo -add $argv # arg is a string, add todo
        end
    end
end