From 5521a657c9271e55cbf520892ee3fe11fcbb743a Mon Sep 17 00:00:00 2001
From: chris olin <bailson.jr@gmail.com>
Date: Fri, 13 May 2022 11:08:16 -0400
Subject: [PATCH] sanitize RTS string output

---
 README.md                | 1 +
 server/public/runtime.js | 2 +-
 tests/hustle/8.wkt       | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 tests/hustle/8.wkt

diff --git a/README.md b/README.md
index 50a7e1b..dc8d6b3 100644
--- a/README.md
+++ b/README.md
@@ -101,6 +101,7 @@ Alternatively, your syntax checker may fail to do anything at all, because of th
 - Tail recursion
 - Lambdas with arbitrary signatures
 - update the wat AST in the README to reflect more recent changes
+- RTS printing for heap structures
 
 ## Complete
 
diff --git a/server/public/runtime.js b/server/public/runtime.js
index e4303e8..bb8103b 100644
--- a/server/public/runtime.js
+++ b/server/public/runtime.js
@@ -66,7 +66,7 @@ function run(){
         console.log("unwrapped: ", unwrappedResult);
         result = unwrappedResult;
         console.log("result: ", result);
-        output.innerHTML = output.innerHTML + result;
+        output.innerHTML = output.innerHTML + result.replace("<", "&lt;").replace(">", "&gt;");
       })();
 }
 
diff --git a/tests/hustle/8.wkt b/tests/hustle/8.wkt
new file mode 100644
index 0000000..281c871
--- /dev/null
+++ b/tests/hustle/8.wkt
@@ -0,0 +1,2 @@
+#lang wacket
+(cdr (cons #\a (cons #\b '())))
\ No newline at end of file