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From: Bart Schaefer <schaefer@brasslantern.com>
To: Ray Andrews <rayandrews@eastlink.ca>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: local functions
Date: Mon, 19 Dec 2022 17:00:53 -0800	[thread overview]
Message-ID: <CAH+w=7YUVieOKvf4Wb-Z=jkbSDfF3UNq6cMDF4m014fp+hfxAA@mail.gmail.com> (raw)
In-Reply-To: <4ffaaa6a-d276-7715-a62f-fbd9bf880968@eastlink.ca>

The current git head has a new utility function
Completion/Base/Utility/_shadow that can be used to simulate local
function names.  You write

   {
     _shadow myfunc
     function myfunc {
       # Do your new thing
     }
     # call myfunc as needed
   } always {
     _unshadow myfunc
   }

If there is already a function named "myfunc" it gets moved aside and
replaced by the new one, and then moved back by _unshadow.  This can
also be used to temporarily replace a builtin.

The functions aren't really local -- they exist in the global scope,
so there's still a chance that something that wants to call the
original one will get the newer one by mistake -- but that's pretty
similar to what happens with local parameters.


  reply	other threads:[~2022-12-20  1:01 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-19 18:19 Ray Andrews
2022-12-19 19:01 ` Bart Schaefer
2022-12-19 21:52   ` Ray Andrews
2022-12-20  1:00     ` Bart Schaefer [this message]
2022-12-20  2:51       ` Ray Andrews

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