bpo-21519: IDLE basic custom key entry better detects duplicates. (#2428)
diff --git a/Lib/idlelib/config_key.py b/Lib/idlelib/config_key.py
index 8d575ec..fc6e341 100644
--- a/Lib/idlelib/config_key.py
+++ b/Lib/idlelib/config_key.py
@@ -250,10 +250,10 @@
'''
finalKey = self.listKeysFinal.get(ANCHOR)
modifiers = self.GetModifiers()
- # create a key sequence list for overlap check:
- keySequence = keys.split()
keysOK = False
title = self.keyerror_title
+ key_sequences = [key for keylist in self.currentKeySequences
+ for key in keylist]
if not keys.endswith('>'):
self.showerror(title, parent=self,
message='Missing the final Key')
@@ -267,7 +267,7 @@
msg = 'The shift modifier by itself may not be used with'\
' this key symbol.'
self.showerror(title=title, parent=self, message=msg)
- elif keySequence in self.currentKeySequences:
+ elif keys in key_sequences:
msg = 'This key combination is already in use.'
self.showerror(title=title, parent=self, message=msg)
else: