bug-bash
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: printf %q represents null argument as empty string.


From: Chet Ramey
Subject: Re: printf %q represents null argument as empty string.
Date: Sat, 12 Jan 2013 14:40:35 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/17.0 Thunderbird/17.0

On 1/12/13 9:48 AM, John Kearney wrote:

> anyway now we have a point I disagree that
> "address@hidden"
> 
> should expand to 0 or more words, from the documentation it should be 1
> or more. At least that is how I read  that paragragh. IT says it will
> split the word not make the word vanish.
> so I had to test and it really does how weird, is that in the posix spec?.

Yes.  Here's the relevant sentence from the man page description of $@:

        When  there  are no positional parameters, "$@" and $@ expand to
        nothing (i.e., they are removed).

Posix says something similar:

        If there are no positional parameters, the expansion of '@' shall
        generate zero fields, even when '@' is double-quoted.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



reply via email to

[Prev in Thread] Current Thread [Next in Thread]