GNU bug report logs - #17450
multiplication bug

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: julien becan <zoskoy <at> hotmail.fr>
To: "bug-coreutils <at> gnu.org" <bug-coreutils <at> gnu.org>
Subject: multiplication bug
Date: Fri, 9 May 2014 09:32:19 +0200

[Message part 1 (text/plain, inline)]

Hello,

I've tried the `expr` program yesterday and I think that there is a problem with multiplication because when I type 2 * 2 I have a syntax error.

Do you have the solution ?

Thanks

Julien Becan
 		 	   		  

[Message part 2 (text/html, inline)]

Message #8 received at 17450 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: julien becan <zoskoy <at> hotmail.fr>
Cc: 17450 <at> debbugs.gnu.org
Subject: Re: bug#17450: multiplication bug
Date: Fri, 09 May 2014 16:51:15 +0100

tag 17540 notabug
close 17450
stop

http://www.gnu.org/software/coreutils/faq/coreutils-faq.html#expr-2-_002a-3-does-not-work

On 05/09/2014 08:32 AM, julien becan wrote:
> Hello,
> 
> I've tried the `expr` program yesterday and I think that there is a problem with multiplication because when I type 2 * 2 I have a syntax error.
> 
> Do you have the solution ?
> 
> Thanks
> 
> Julien Becan
>  		 	   		  
> 

Message #13 received at 17450 <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: Pádraig Brady <P <at> draigBrady.com>, 
 julien becan <zoskoy <at> hotmail.fr>
Cc: 17450 <at> debbugs.gnu.org
Subject: Re: bug#17450: multiplication bug
Date: Sat, 10 May 2014 19:50:03 +0200

On 05/09/2014 05:51 PM, Pádraig Brady wrote:
> http://www.gnu.org/software/coreutils/faq/coreutils-faq.html#expr-2-_002a-3-does-not-work

Hi Padraig,

I don't know if this was discussed before: what do you think about
adding a sentence to the FAQ that some shells allow to turn off
globbing?  E.g. in bash with 'set -f' or 'set -o noglob':

  $ ( set -o noglob && expr 2 * 2 )
  4

Have a nice day,
Berny

Message #16 received at 17450 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Bernhard Voelker <mail <at> bernhard-voelker.de>
Cc: 17450 <at> debbugs.gnu.org, julien becan <zoskoy <at> hotmail.fr>
Subject: Re: bug#17450: multiplication bug
Date: Sat, 10 May 2014 19:33:42 +0100

On 05/10/2014 06:50 PM, Bernhard Voelker wrote:
> On 05/09/2014 05:51 PM, Pádraig Brady wrote:
>> http://www.gnu.org/software/coreutils/faq/coreutils-faq.html#expr-2-_002a-3-does-not-work
> 
> Hi Padraig,
> 
> I don't know if this was discussed before: what do you think about
> adding a sentence to the FAQ that some shells allow to turn off
> globbing?  E.g. in bash with 'set -f' or 'set -o noglob':
> 
>   $ ( set -o noglob && expr 2 * 2 )
>   4

Maybe, though you'd probably never do that in the
context of calculations in a shell script,
where escaping the '*' is the standard and portable
way to achieve it.

cheers,
Pádraig.

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