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Re: local unfunction
- X-seq: zsh-users 23293
- From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
- To: Zsh Users <zsh-users@xxxxxxx>
- Subject: Re: local unfunction
- Date: Fri, 30 Mar 2018 22:23:20 -0700
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On Fri, Mar 30, 2018 at 5:30 PM, Ray Andrews <rayandrews@xxxxxxxxxxx> wrote:
> playing with Mikael's use of parenthesis -- I'd swear this is the first time
> I've seen any such thing -- and it seems too good to be true, so far it just
> works. Are there any lurking gotchas?
It's just creating a subshell, like any other time you'd put one or
more commands in parentheses.
The "lurking gotcha" is that because it is a subshell it can't affect
the parent shell in any way. That's what Mikael means by "cancel all
other side effects" which he demonstrates with a=5.
> Disadvantages? It doesn't seem any slower.
It does fork an additional process.
> BTW, just to keep flogging a dead horse:
> function test1 ()
> echo "\none"
> whence -a "zsh"
> echo "\ntwo"
> whence -ma "zsh*"
> echo "\nthree"
> whence -m "zsh*"
Try adding -w to get whence to tell you which hash table it's reading from.
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