Re: Moving files from lisp/gnus/ to lisp/net/?

[Richard Stallman]

    (3) if read-passwd caches passphrases when the optional argument is
    given, some people will misuse that new feature (perhaps by cut&paste
    existing code)
    even though the docstring of read-passwd explicitly states that behavior.

I don't follow.  What is the scenario you are worried about?
What code are they copying and pasting?  And why is misuse
more likely if the new feature is an optional argument
than if it is a separate function?