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The
AliasedGroupexample overridesresolve_commandand doesreturn cmd.name, cmd, args. During shell completion (resilient parsing) of an unknown or mistyped command, the baseGroup.resolve_commandreturnscmd = None, socmd.nameraisesAttributeError: 'NoneType' object has no attribute 'name'.Click's base
Group.resolve_commandalready guards this withcmd_name if cmd else None; this change makes the example do the same (return cmd.name if cmd else None, cmd, args). The identical bug is in the runnableexamples/aliases/aliases.py, fixed here too.Verified on click 8.4.2 (Python 3.14): the current example raises the AttributeError during completion of an unknown command; with the fix, completion returns the expected results.
Closes #2402.