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From: Mikael Magnusson <mikachu@gmail.com>
Date: Fri, 30 Mar 2018 22:10:59 +0200
Message-ID: <CAHYJk3RBu1wE=m76eeF6+LEAbDAJDE1E6zfeuddxf5LPhW8i4w@mail.gmail.com>
Subject: Re: local unfunction
To: Ray Andrews <rayandrews@eastlink.ca>
Cc: Zsh Users <zsh-users@zsh.org>
Content-Type: text/plain; charset="UTF-8"

On Fri, Mar 30, 2018 at 6:11 PM, Ray Andrews <rayandrews@eastlink.ca> wrote:
> Is it possible to unfunction something just within another function?  I've
> tried:
>
> unset -fm ....
>
> ... but the functions remain dead after the calling function returns.  I can
> of course just resource them, but I'll bet the unset can be made local.

If it's okay to also cancel all other side effects, you can use a subshell,
function() hey {
  normal stuff here
  (
     unfunction foo
     foo
     a=5 # this will also disappear after the )
  )
}

-- 
Mikael Magnusson