[rel~="with\5c slashes"] should match an element whose rel is with\slashes, but it doesn't, because the logic here checks if the selector value contains whitespace, not recognizing that whitespace could be part of a valid escape of a non-whitespace character:
[rel~="with\5c slashes"]should match an element whose rel iswith\slashes, but it doesn't, because the logic here checks if the selector value contains whitespace, not recognizing that whitespace could be part of a valid escape of a non-whitespace character:https://github.com/dperini/nwsapi/blob/8d71cdfcdeb85800d7c0578476e8bca31d36285b/src/nwsapi.js#L855-L860
Presumably the escapes need to be converted before doing this bailout logic.