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Re: doesn't bash do variable subst. or quote removal on function stateme


From: Chet Ramey
Subject: Re: doesn't bash do variable subst. or quote removal on function statement
Date: Wed, 13 Jan 2016 10:41:40 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.5.1

On 1/12/16 4:33 PM, Linda Walsh wrote:
> 
> 
> Greg Wooledge wrote:
>> On Tue, Jan 12, 2016 at 11:52:47AM -0800, Linda Walsh wrote:
>>  
>>> Also, from a documentation standpoint, not all behaviors are documented
>>> in the manpage, like:
>>>
>>> echo $[1+2]
>>>
>>> as far as I can tell, isn't documented, yet not supporting
>>> its behavior would break many older scripts....
>>>     
>>
>> That syntax has been deprecated for at least 15 years.
> ---
>    But why?  It's less noisy than any alternative.
> It's not as if I can type echo $(1+2) and expect it to work.

Because it only ever appeared in a Posix draft standard, and there's no
reason not to use the standard syntax.

-- 
``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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