Compare canonical paths by token spelling

internal/engine/resolution.go

@@ -337,12 +337,12 @@ func pathContains(container, descendant Path) bool {
 	if !container.valid() || !descendant.valid() || len(container.segments) > len(descendant.segments) {
 		return false
 	}
-	if container.String() == "" {
-		return true
+	for i, segment := range container.segments {
+		if !pathTokenSpellingEqual(segment, descendant.segments[i]) {
+			return false
+		}
 	}
-	prefix := container.String()
-	value := descendant.String()
-	return value == prefix || strings.HasPrefix(value, prefix+"/")
+	return true
 }
 
 func appendUniqueString(values []string, value string) []string {
@@ -354,7 +354,7 @@ func appendUniqueString(values []string, value string) []string {
 
 func appendUniquePath(paths []Path, path Path) []Path {
 	for _, existing := range paths {
-		if existing.String() == path.String() {
+		if pathSpellingEqual(existing, path) {
 			return paths
 		}
 	}