GNU bug report logs - #22909
Manpage test(1): Obsolescent logical operators

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Message #14 received at 22909 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Eric Blake <eblake <at> redhat.com>, 22909 <at> debbugs.gnu.org
Subject: Re: bug#22909: [PATCH] test: Document that -a and -o are undesirable
Date: Fri, 4 Mar 2016 09:12:59 -0800

On 04/03/16 08:55, Eric Blake wrote:
> POSIX recommends avoiding -a and -o, for good reason.
> src/test.c (usage): Mention that inherent ambiguities exist with
> binary -a and -o.
> Problem reported by Martin Gebert in: http://bugs.gnu.org/22909
> ---
>   src/test.c | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/src/test.c b/src/test.c
> index 36817d2..bf31cf9 100644
> --- a/src/test.c
> +++ b/src/test.c
> @@ -790,6 +790,11 @@ INTEGER may also be -l STRING, which evaluates to the length of STRING.\n\
>   "), stdout);
>         fputs (_("\
>   \n\
> +NOTE: Use of binary -a and -o create inherently ambiguous situations.  Use\n\
> +'test EXPR1 && test EXPR2' or 'test EXPR1 || test EXPR2' instead.\n\
> +"), stdout);
> +      fputs (_("\
> +\n\
>   NOTE: [ honors the --help and --version options, but test does not.\n\
>   test treats each of those as it treats any other nonempty STRING.\n\
>   "), stdout);
>

+1

thanks

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