[] operator does not return usable ruleset values.

Map operator seems to not return anything reasonable if the value of interest is a ruleset.

Example:

@typography: {
    @h1: {
        font:         roboto;
        font-weight:     300;
        font-size:    9.6rem;
        line-height:  9.6rem;
        text-transform: none;
    }
}

#usage {
    @x: @typography[@h1];
    r: @x[font]; // err: could not evaluate variable call @x
    @x();        // err: could not evaluate variable call @x
}

Expected: @x value should be a proper DR for both subsequent statements to work.

[matthew-dean]

It seems that this was fixed with other fixes. The latest version of Less (3.12.2) does not have this issue. The output is, as expected:

#usage {
  r: roboto;
  font: roboto;
  font-weight: 300;
  font-size: 9.6rem;
  line-height: 9.6rem;
  text-transform: none;
}

[matthew-dean]

Closing as fixed.