Better exception when connecting an event (#201)

pwndbg/events.py

@@ -16,9 +16,11 @@ import traceback
 
 import gdb
 
+import pwndbg.color
 import pwndbg.config
 import pwndbg.stdio
 
+
 debug = pwndbg.config.Parameter('debug-events', False, 'display internal event debugging info')
 pause = 0
 
@@ -119,6 +121,9 @@ def connect(func, event_handler, name=''):
             try:
                 func()
             except Exception as e:
+                msg = "Exception during func={}.{} {!r}".format(func.__module__, func.__name__, a)
+                msg = pwndbg.color.red(msg)
+                print(msg, file=sys.stderr)
                 traceback.print_exc()
                 raise e