Provide a mechanism to dereference nested mixin structure

[Bilge]

Given the following Less, there is no way to dereference the value of @inner-background.

.tag(@background, @color: tint(@background, 68%)) {
  color: @color;
  background: @background;
  @inner-background: tint(@background, 28%);

  >span {
    background: @inner-background;
  }
}

Although we can dereference top-level properties, e.g. .tag(red)[color], we cannot dereference variables or nested structure. All of the following are invalid:

• .tag(red)[>span background]
• .tag(red)[>span.background]
• .tag(red).span[background]
• .tag(red).span()[background]

However, as an interesting aside, .tag(red)[@inner-background] is valid.

[matthew-dean]

It's not clear what you're trying to do here.