Lack of short-circuit @if condition evaluation

[ChristianPeters]

@if $ie and $ie <= 7
  position: absolute
  left: 50px
@else 
  position: relative

This renders a syntax error: Undefined operation: "false lte 7". if $ie is false.

If I would have to choose between short-circuit and eager evaluation, I chose the former one because it's the more useful behavior in 99% of cases. In fact, some languages like PHP or Javascript do not even have an eagerly evaluating operator.

The docs do not say anything about boolean operators. I think they are essential though.