logical properties

[chharvey]

__tool.border-radius.less

(note that the @radius variable could take the form of one or two values, e.g. @radius: 2px 4px for the x- and y- radii, in that order)

// could the following 4 mixins be css shorthand properties?
.border-block-start-radius(@radius: 0) {
  border-start-start-radius: @radius;
  border-start-end-radius:   @radius;
}
.border-block-end-radius(@radius: 0) {
  border-end-start-radius: @radius;
  border-end-end-radius:   @radius;
}
.border-inline-start-radius(@radius: 0) {
  border-start-start-radius: @radius;
  border-end-start-radius:   @radius;
}
.border-inline-end-radius(@radius: 0) {
  border-start-end-radius: @radius;
  border-end-end-radius:   @radius;
}

Related: w3c/csswg-drafts#491

__tool.borders.less

.border-block(start; @width: 0) {
  border-block-start-width: @width;
  margin-block-start: (-@width);
}
.border-block(end; @width: 0) {
  border-block-end-width: @width;
  margin-block-start: (-@width);
}
.border-block(block; @width: 0) {
  border-block-width: @width;
  margin-block-start: (-2 * @width);
}
.border-block(all; @width: 0) {
  border-width: @width;
  margin-block-start: (-2 * @width);
}

_c-Permalink.less

.c-Permalink {
  margin-inline-start: 1rem;
}

_h-Hidden.less

.h-Hidden {
  inset-inline-start: -999999px;
}

_h-Ruled.less

.h-Ruled {
  background-position-block: end;
}

[chharvey]

xmeter v6.2.0