I'm sure there was a reason this was complicated.

plugins/choose.py

@@ -1,4 +1,3 @@
-import re
 import random
 
 from util import hook
@@ -6,13 +5,10 @@ from util import hook
 
 @hook.command
 def choose(inp):
-    """choose <choice1>, [choice2], [choice3] ... [choiceN]
+    """choose <choice1>, [choice2], [choice3]
     Randomly picks one of the given choices."""
 
-    c = re.findall(r'([^,]+)', inp)
+    c = inp.split(" ")
     if len(c) == 1:
-        c = re.findall(r'(\S+)', inp)
-        if len(c) == 1:
-            return 'The decision is up to you!'
-
+        return 'banana'
     return random.choice(c).strip()