From: Bart Schaefer <schaefer@brasslantern.com>
To: William Scott <wgscott@chemistry.ucsc.edu>,
L:ZSH-users <zsh-users@sunsite.dk>
Subject: Re: odd recursion
Date: Mon, 31 Jan 2005 16:46:32 +0000 [thread overview]
Message-ID: <1050131164632.ZM31318@candle.brasslantern.com> (raw)
In-Reply-To: <5ced8dfb84fe26e20350095da48dd44d@chemistry.ucsc.edu>
On Jan 31, 8:24am, William Scott wrote:
}
} I stumbled onto something that makes me realize there is a lot to zsh I
} don't understand. I've resolved the problem, but I still don't
} understand it.
You stumbled on FAQ question number 2.3, "Why do my csh aliases not work?
(Plus other alias pitfalls.)"
There is one other serious problem with aliases: consider
alias l='/bin/ls -F'
l() { /bin/ls -la "$@" | more }
`l' in the function definition is in command position and is expanded
as an alias, defining `/bin/ls' and `-F' as functions which call
`/bin/ls', which gets a bit recursive. This can be avoided if you use
`function' to define a function, which doesn't expand aliases. It is
possible to argue for extra warnings somewhere in this mess.
Bart Schaefer's rule is: Define first those aliases you expect to
use in the body of a function, but define the function first if the
alias has the same name as the function.
next prev parent reply other threads:[~2005-01-31 16:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-31 16:24 William Scott
2005-01-31 16:46 ` Bart Schaefer [this message]
2005-01-31 16:54 ` Thorsten Kampe
2005-01-31 18:16 ` William Scott
2005-01-31 20:44 ` Seth Kurtzberg
2005-01-31 23:30 ` William Scott
2005-02-01 2:48 ` Bart Schaefer
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