Specify a blacklist of disallowed attribute operators.
[target="_blank"] {} /** ↑ * This operator */
array|string
: ["array", "of", "operators"]|"operator"
Given:
[ "*=" ]
The following patterns are considered violations:
[class*="test"] {}
The following patterns are not considered violations:
[target] {}
[target="_blank"] {}
[class|="top"] {}