tests/run-tests.py: Fix hex parsing of {\xnn} escapes.

Signed-off-by: Dan Halbert <halbert@halwitz.org>

Author: dhalbert

tests/run-tests.py

@@ -489,8 +489,8 @@ def get(required=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))])
+                        # Detect hex {\x00} pattern and convert to ctrl-key codes.
+                        ctrl_code = lambda m: bytes([int(m.group(1), 16)])
                         what = re.sub(rb"{\\x(\d\d)}", ctrl_code, what)
 
                         os.write(master, what)