def attr.find
import gralha-xml-doc@0.1.0.1/xml.bend as Xmlimport Base
import gralha-text-scan@0.1.0.1/scan.bend as U
302def attr.find(attrs: List<&2, Attr>, +key: String) -> Maybe<&2, String>:
303 match attrs:
304 case Nil{}: None{}
305 case Con{Attr{k, v}, t}: attr.find.go(U.string.equal(k, key), v, t, key)