Falsey key for map removes value from map

[davidkpiano]

TEST:

$map: (
  true: 1,
  false: 0
);

.test {
  map: inspect($map);
  value: inspect(map-get($map, false));
}

EXPECTED: (Ruby Sass)

.test {
  map: (true: 1, false: 0);
  value: 0;
}

ACTUAL: (Libsass 3.2.5)

.test {
  map: (true: 1);
  value: null;
}

[xzyfer]

@davidkpiano thanks for the report. This is fixed on master and will be 3.3.