From: "Bart Schaefer" <schaefer@brasslantern.com>
To: zsh-users@math.gatech.edu
Subject: Re: "Fallback" alias/function in zsh
Date: Tue, 8 Dec 1998 18:55:01 -0800 [thread overview]
Message-ID: <981208185501.ZM7746@candle.brasslantern.com> (raw)
In-Reply-To: <19981209011923.40055@athenaeum.demon.co.uk>
On Dec 9, 1:19am, Phil Pennock wrote:
} Subject: Re: "Fallback" alias/function in zsh
}
} Typing away merrily, Bart Schaefer produced the immortal words:
} > In 3.1.5, there's the preexec() function, in which you could do something
} > like this:
} >
} > function preexec() {
} > command=("$@")
} > }
} > function precmd() {
} > (($?)) && CMD /C "$command[@]"
} > }
}
} That seems dangerous. The problem looks to be 'if path lookup fails'
} not 'if path lookup fails or program returns non-zero'; could be fun to
} run a grep(1) port and have it run twice if no matches were found ...
Easily enough adjusted:
function precmd() {
(($?)) && { whence "$command[1]" >& /dev/null || CMD /C "$command[@]" }
}
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
prev parent reply other threads:[~1998-12-09 2:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-12-08 22:04 Paul Moore
1998-12-08 23:50 ` Bart Schaefer
1998-12-09 1:19 ` Phil Pennock
1998-12-09 2:55 ` Bart Schaefer [this message]
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