Refuse to translate if set2 contains more than one unique characters and set1 contains a character class (#6472)

* Refuse to translate if set2 contains > 1 unique characters

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/by-util/test_tr.rs b/tests/by-util/test_tr.rs
index a68a793bc..4179e21fb 100644
--- a/tests/by-util/test_tr.rs
+++ b/tests/by-util/test_tr.rs
@@ -1386,3 +1386,23 @@ fn check_set1_longer_set2_ends_in_class_with_trunc() {
         .args(&["-t", "[:lower:]a", "[:upper:]"])
         .succeeds();
 }
+
+#[test]
+fn check_complement_2_unique_in_set2() {
+    let x226 = "x".repeat(226);
+
+    // [y*] is expanded tp "y" here
+    let arg = x226 + "[y*]xxx";
+    new_ucmd!().args(&["-c", "[:upper:]", arg.as_str()]).fails();
+}
+
+#[test]
+fn check_complement_1_unique_in_set2() {
+    let x226 = "x".repeat(226);
+
+    // [y*] is expanded to "" here
+    let arg = x226 + "[y*]xxxx";
+    new_ucmd!()
+        .args(&["-c", "[:upper:]", arg.as_str()])
+        .succeeds();
+}