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Subject: Re: real time alias?
To: zsh-users@zsh.org
References: <98aa0638-97ed-dfe0-8dd2-39129d02c084@eastlink.ca>
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From: Ray Andrews <rayandrews@eastlink.ca>
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Date: Fri, 16 Mar 2018 09:47:48 -0700
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On 15/03/18 02:44 PM, Marc Chantreux wrote:
> my advice is: see aliases as macro: don't use it as long as you can
> achieve things with functions. one of the reasons is aliases can be used
> after a variable expansion and so you can get some surprising behaviors.
Yeah, I know what to expect, I'm mostly just curious about possibilities.


$ alias test2="echo this is the original alias test2"
$ function test3 () { echo this is function test3 }

$ function test1 ()
{
     test2
     test3
}


$ alias test2="echo changed alias test2"

$ function test3 () { echo "test3 is now changed" }

$ test1
this is the original alias test2
test3 is now changed

... to be honest I can't even think of a reason to want anything more 
than what we have,  but I was curious.  One might imagine:

$ function test1 ()
{
     test2 # unchanged since last sourcing of this function.
     setopt GRAB_ALIASES_AGAIN test2
     test2 # Up-to-date.
     test3
}

Nevermind.