From 3568a472353f34a59c3592faa4f0b8d83321c8d3 Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Tue, 17 Oct 2023 23:21:56 +0200
Subject: [PATCH] Fix string octal escape encoding

The bug affected invisible ASCII characters that have one of the two high bits set, so only DEL.
---
 src/buf.rs    | 2 +-
 src/object.rs | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/buf.rs b/src/buf.rs
index c3fceca..b6bf397 100644
--- a/src/buf.rs
+++ b/src/buf.rs
@@ -76,7 +76,7 @@ impl BufExt for Vec<u8> {
         }
 
         self.push(octal(value >> 6));
-        self.push(octal((value >> 3) & 63));
+        self.push(octal((value >> 3) & 7));
         self.push(octal(value & 7));
     }
 }
diff --git a/src/object.rs b/src/object.rs
index d0cf5e8..5445079 100644
--- a/src/object.rs
+++ b/src/object.rs
@@ -1088,6 +1088,7 @@ mod tests {
         test_primitive!(Str(br"\n"), br"(\\n)");
         test_primitive!(Str(b"a\x14b"), br"(a\024b)");
         test_primitive!(Str(b"\xFF\xAA"), b"<FFAA>");
+        test_primitive!(Str(b"\x0A\x7F\x1F"), br"(\n\177\037)");
 
         // Test text strings.
         test_primitive!(TextStr("Hallo"), b"(Hallo)");