> Presumably you would also include aliases, shell builtins, and functions > in this file.
Yes. I just want to replace executables in PATH by the result from my custom function. I think that aliases, builtins, and functions are all in the memory of bash already, so it doesn't take extra time to search them from bash. Therefore, the ideal behaviors is that bash still search for aliases, builtins and functions, and in addition check the results returned by my custom function. Hence, my custom function should not return anything about them (this should be expect at least by default). -- Regards, Peng
