Wrong arbitrary values for border shorthand

[guivr]

Current Behavior

a {
  border-width: 1px 0;
}

Converts to:

a {
  @apply border-[1px_0];
}

Expected Behavior

It should convert to:

a {
  @apply border-y;
}

Things get more complicated if you do

a {
  border-width: 1px 0 3px;
}

then it should be

a {
 @apply border-t border-b-[3px];
}

It's currently using border-[] for arbitrary values but that's for border-color, not for border-width.

In the case above, where border-bottom-width has an arbitrary value of 3px, it should convert to border-b-[3px]

There are many other edge cases on that, like border-width: 1px 2px; which would be border-y border-x-2. Amazing if everything can be converted nicely, but if not, then it should remain unconverted.