mercurial/filemerge.py

--- a/mercurial/filemerge.py	Thu Mar 03 17:39:20 2022 -0800
+++ b/mercurial/filemerge.py	Thu Mar 03 18:28:30 2022 -0800
@@ -1199,7 +1199,7 @@
 
 def loadinternalmerge(ui, extname, registrarobj):
     """Load internal merge tool from specified registrarobj"""
-    for name, func in pycompat.iteritems(registrarobj._table):
+    for name, func in registrarobj._table.items():
         fullname = b':' + name
         internals[fullname] = func
         internals[b'internal:' + name] = func