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Re: [Help-bash] Why BASH_SUBSHELL behaves differently in () and <()?
From: |
Chet Ramey |
Subject: |
Re: [Help-bash] Why BASH_SUBSHELL behaves differently in () and <()? |
Date: |
Fri, 18 Sep 2015 09:33:44 -0400 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 |
On 9/18/15 8:35 AM, Greg Wooledge wrote:
> On Fri, Sep 18, 2015 at 01:46:45PM +0800, ziyunfei wrote:
>> But as you said in
>> http://lists.gnu.org/archive/html/help-bash/2015-04/msg00010.html
>> BASHPID is expanded in the subshell, so BASH_SUBSHELL must also be like that.
>
> I think you mean "should" rather than "must". I.e. you would like bash
> to treat them both the same. However, it doesn't (currently).
>
> In http://lists.gnu.org/archive/html/help-bash/2015-04/msg00013.html
> Chet says it will be fixed in the next release of bash.
What I said in that message was that the process substitution environment
would be modified to change how BASH_SUBSHELL was handled.
--
``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/