1 files changed, 4 insertions, 0 deletions
diff --git a/tests/run-tests.py b/tests/run-tests.py
index 5eebc72460..628fde9d30 100755
--- a/tests/run-tests.py
+++ b/tests/run-tests.py
@@ -405,6 +405,10 @@ def run_micropython(pyb, args, test_file, test_file_abspath, is_special=False):
                                     return rv
 
                     def send_get(what):
+                        # Detect {\x00} pattern and convert to ctrl-key codes.
+                        ctrl_code = lambda m: bytes([int(m.group(1))])
+                        what = re.sub(rb'{\\x(\d\d)}', ctrl_code, what)
+
                         os.write(master, what)
                         return get()