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Re: assert built-in


From: Chet Ramey
Subject: Re: assert built-in
Date: Thu, 20 Aug 2015 15:12:30 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.0.1

On 8/19/15 11:48 AM, Greg Wooledge wrote:
> On Wed, Aug 19, 2015 at 08:39:15AM +0000, Craig wrote:
>> It's somewhat cumbersome to have to transport this assert function from
>> project to project, so it would save a considerable amount of effort and
>> time if it were built-in.
> 
>> function assert() {
>>     local lineno=${BASH_LINENO[0]} \
>>           src=${BASH_SOURCE[1]} \
>>           lines=()
>>
>>     mapfile -n 1 -t -s $(( $lineno - 1 )) lines < "$src"
>>
>>     printf "ASSERT: ${src##*/}:$lineno: %s\n" "$lines"
>>
>>     exit 1
>> }
> 
> I don't think there will be broad enough interest to justify bloating
> bash with a feature that can be achieved with a 4-line function.  

I agree with this assessment, and note that this is the first request for
such a builtin.  There's no indication that it's been generally requested.

-- 
``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/



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