Duplicated output from @extend when scss partial imported multiple times

[JakeElder]

Thanks for the great work.

I've taken to writing scss modules that import all their dependencies, in order to make them as portable and explicit as possible. EG

_type.scss

%type-0 { color: red; }

_carousel.scss

@import "type";
%carousel { @extend %type-0; }

_accordion.scss

@import "type";
%accordion { @extend %type-0; }

default.scss

@import "carousel";
@import "accordion";
.carousel { @extend %carousel; }
.accordion { @extend %accordion; }

When default.scss is compiled, I would expect

.carousel, .accordion {
  color: red; }

Actual:

.carousel, .accordion {
  color: red; }

.carousel, .accordion {
  color: red; }

gzip will mitigate the cost attached to the increased file size, but I'm wondering if this is intended behaviour?

[nex3]

The issue is that @import always creates a new copy of the stylesheet you're importing, so there are two copies of the selectors you're @extending. I'm closing this as a duplicate of #156.