Extend and Improve Interruption

klippy/exceptions.py

@@ -0,0 +1,13 @@
+# Exceptions that are broadly used in the klippy codebase
+#
+# Copyright (C) 2026  Gareth Farrington <gareth@waves.ky>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+
+
+class CommandError(Exception):
+    pass
+
+
+class WaitInterruption(CommandError):
+    pass

klippy/extras/pause_resume.py

@@ -30,6 +30,7 @@ def __init__(self, config):
             "CANCEL_PRINT",
             self.cmd_CANCEL_PRINT,
             desc=self.cmd_CANCEL_PRINT_help,
+            trigger_interrupt=True,
         )
         webhooks = self.printer.lookup_object("webhooks")
         webhooks.register_endpoint(

klippy/extras/trad_rack.py

@@ -2317,6 +2317,7 @@ class TradRackToolHead(toolhead.ToolHead, object):
     def __init__(self, config, buffer_pull_speed, is_extruder_synced):
         self.printer = config.get_printer()
         self.danger_options = self.printer.lookup_object("danger_options")
+        self.gcode = self.printer.lookup_object("gcode")
         self.reactor = self.printer.get_reactor()
         self.all_mcus = [
             m for n, m in self.printer.lookup_objects(module="mcu")