captures keep the name's diacritics

1 files changed, 17 insertions, 0 deletions

diff --git a/internal/cond/eval_test.go b/internal/cond/eval_test.go
index 88612ac..2e8bcfd 100644
--- a/internal/cond/eval_test.go
+++ b/internal/cond/eval_test.go
@@ -240,3 +240,20 @@ func TestEvalReportsUnreadableContent(t *testing.T) {
 		t.Errorf("not reached: Match %v Unreadable %v; want true, false", r.Match, r.Unreadable)
 	}
 }
+
+// TestCapturesKeepDiacritics: a name test matches the folded name, but its
+// captures are the original name's characters, so {1} keeps "Łódź".
+func TestCapturesKeepDiacritics(t *testing.T) {
+	f := &fake{name: "Łódź-Faktura.pdf"}
+	r := eval(t, `(name "^(.+)-faktura")`, Options{IgnoreCase: true, Fold: true}, f)
+	if !r.Match {
+		t.Fatal("no match")
+	}
+	if want := []string{"Łódź-Faktura", "Łódź"}; !reflect.DeepEqual(r.Captures, want) {
+		t.Errorf("captures = %q, want %q", r.Captures, want)
+	}
+	r = eval(t, `(name "^(lodz)?(x)?-")`, Options{IgnoreCase: true, Fold: true}, f)
+	if want := []string{"Łódź-", "Łódź", ""}; !reflect.DeepEqual(r.Captures, want) {
+		t.Errorf("captures with a group that did not take part = %q, want %q", r.Captures, want)
+	}
+}