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From: "Bart Schaefer" <schaefer@brasslantern.com>
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Date: Tue, 8 Dec 1998 15:50:32 -0800
In-Reply-To: <19981208220443.A180@morpheus.demon.co.uk>
Comments: In reply to Paul Moore <gustav@morpheus.demon.co.uk>
        ""Fallback" alias/function in zsh" (Dec  8, 10:04pm)
References: <19981208220443.A180@morpheus.demon.co.uk>
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To: Paul Moore <gustav@morpheus.demon.co.uk>, zsh-users@math.gatech.edu
Subject: Re: "Fallback" alias/function in zsh
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On Dec 8, 10:04pm, Paul Moore wrote:
> Subject: "Fallback" alias/function in zsh
>
> Is it possible to define a function which gets used whenever zsh's
> normal alias/function/builtin/path lookup fails?

In 3.1.5, there's the preexec() function, in which you could do something
like this:

  function preexec() {
    command=("$@")
  }
  function precmd() {
    (($?)) && CMD /C "$command[@]"
  }

That means, before executing the command, save it in $command; then, after
executing it (and just before printing the prompt) if the exit status was
nonzero, attempt to execute the command with CMD /C.

This will do unusual things when you execute compound commands (separated
with ; && || etc.) and won't work for backgrounded commands (&) but should
do what you want for simple commands typed at the prompt.

Of course, 3.1.5 isn't ported to Windows yet ...