trace-viewer/tracing/third_party/tvcm/third_party/rcssmin/tests/yui/preserve-strings.css

/* preserving strings */
.sele {
  content: "\"keep  \"    me";
  something: '\\\' .     . ';
  else: 'empty{}';
  content: "/* test */"; /* <---- this is not a comment, should be be kept */
}