Line Sort using F9 - Option to ignore non-alphanumeric characters?

[gnat]

Problem description

Really simple sorting example using CSS to illustrate the problem:

border: 1px solid white;
border-left: 1px solid black;
border-right: 1px solid black;

When I press F9 to sort these lines, they un-intuitively sort to:

border-left: 1px solid black;
border-right: 1px solid black;
border: 1px solid white;

We know that TECHNICALLY : is a higher ASCII value than -.

But this breaks the usefulness of sort because border is shorter than border-left and border-right.

Preferred solution

Add an option to ignore non-alphanumeric characters (or specific characters).

Alternatives

N/A

Additional Information

N/A