Look up the expression/keyword under the cursor (such as background-color)

[sebastienbarre]

Thanks for DashDoc, very useful.
Not sure if this is doable, but depending on the buffer syntax, could the look up be performed on something "larger" than the word? For example, in a CSS file:

div.foo {
  background-color: #ddd;
}

If my cursor is on background, Dash looks up background, if my cursor is on color, it looks up color, but one would likely expect Sublime would ask Dash to look up background-color.

Thanks