The hyphen in value have less meaning than in property

[kizu]

We have the following test: tht → text-height: text-size;, that we do not pass, we get just text-height.

So, in this case (when there is just one letter in property) it must have greater priority than the same property but without the value.

[kizu]

Some more tests that must be fixed with this issue:

baclc (line 330)
  background-clip no-clip
  background-clip content-box

baclp (line 329)
  background-clip
  background-clip padding-box

baoc (line 334)
  background-color
  background-origin content-box

baop (line 332)
  background-position
  background-origin padding-box

[kizu]

Two more:

lstl (line 455)
  list-style-type circle
  list-style-type lower-roman

lstu (line 456)
  list-style-type square
  list-style-type upper-roman