#!/usr/bin/perl -w
use strict;

my $range = shift;

my %app;
foreach (`git diff --name-only $range`) {
    if (m@lib/([^/]*)@) {
	$app{$1} = 1;
    } elsif (m@erts/@) {
	$app{erts} = 1;
    } else {
	$app{otp} = 1;
    }
}
print join(', ', sort keys %app), "\n";