Function name with escaping not properly recognized

[crisp-tweakers]

e.g.

body { background: ur\l("//example.org/picture.jpg"); }

the url-function is not parsed into a URL object but into a CSSFunction object, even though the function name is normalized to 'url'

[raxbg]

Thanks, I might look into this soon.

[sabberworm]

@raxbg thanks, you’re amazing.