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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <150930000505.ZM21759@torch.brasslantern.com>
Date: Wed, 30 Sep 2015 00:05:05 -0700
In-Reply-To: <560B61C5.2080001@eastlink.ca>
Comments: In reply to Ray Andrews <rayandrews@eastlink.ca>
        "Re: wheels within wheels" (Sep 29,  9:15pm)
References: <55FAE223.2080502@eastlink.ca> 
	<150917103419.ZM10067@torch.brasslantern.com> 
	<150918171441.ZM27212@torch.brasslantern.com> 
	<55FD7982.9030505@eastlink.ca> 
	<150919092922.ZM28214@torch.brasslantern.com> 
	<55FDA5D3.9020304@eastlink.ca> 
	<150919142243.ZM23634@torch.brasslantern.com> 
	<55FE04AD.1070304@eastlink.ca> 
	<150919224120.ZM4736@torch.brasslantern.com> 
	<55FF3F7E.4060906@eastlink.ca> 
	<150920211840.ZM31871@torch.brasslantern.com> 
	<5600386E.7060201@eastlink.ca> 
	<150921111746.ZM388@torch.brasslantern.com> 
	<56006401.5060902@eastlink.ca> 
	<150921201943.ZM707@torch.brasslantern.com> 
	<560B1BE7.8020507@eastlink.ca> 
	<CABx2=D_2aXYy1GaZ-d719ZvDQxGD2NwT+KxG7NTwjhGpjkV2OA@mail.gmail.com> 
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To: zsh-users@zsh.org
Subject: Re: wheels within wheels
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On Sep 29,  9:15pm, Ray Andrews wrote:
}
} Each command is past when it's past so that must mean that the address
} of first foo ... is there ... yes of course there is, the thing is in
} memory ... just aborts when second foo comes along.

No, the outer foo will happily keep executing until it returns, at
which point it is garbage-collected.  The old body has merely been
disconnected from the name.

    function foo {
      echo defining bar
      function bar {
	echo hello from bar
      }
      echo redefining foo
      function foo {
	echo hello from new foo
	bar
      }
      foo
      echo goodbye from the old foo
    }