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Re: set function and special builtin set


From: Andreas Schwab
Subject: Re: set function and special builtin set
Date: Fri, 18 May 2007 21:42:17 +0200
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.97 (gnu/linux)

Benno Schulenberg <address@hidden> writes:

> Clive Nicolson wrote:
>> Is it posible to get a user function named set to be called in
>> place of the special builtin set?
>>
>> ie
>>
>> set() { echo "My set $@" ;}
>>
>> set params
>
> You haven't tried this?
>
> $ set() { echo "My set $@" ;}
> $ set params
> My set params
>
> It just works.

It's not supposed to.  See
<http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_09_01_01>:

    If a simple command results in a command name and an optional list
    of arguments, the following actions shall be performed:
      1. If the command name does not contain any slashes, the first
      successful step in the following sequence shall occur:
            a. If the command name matches the name of a special
            built-in utility, that special built-in utility shall be
            invoked.

(And set is a special built-in.)

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."




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