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Re: -e does not take effects in subshell

From: Chet Ramey
Subject: Re: -e does not take effects in subshell
Date: Thu, 13 Aug 2015 09:51:17 -0400
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On 8/13/15 1:35 AM, isabella parakiss wrote:
> On 8/13/15, Eric Blake <address@hidden> wrote:
>> Like it or not, it is the historical behavior standardized by POSIX. It
>> is NOT intuitive, and our advice is "DON'T USE set -e - IT WON'T DO WHAT
>> YOU WANT".  We can't change the behavior, because it would break scripts
>> that rely on the POSIX-specified behavior.
> POSIX didn't say anything about shopt set-e-that-actually-makes-sense.

Sure, all it needs is a specification with the same rigor as Posix's.
There have been a couple of attempts to do that so far, but they haven't
been articulated well enough to differentiate from set -e or to
implement.  I encourage folks to take another shot at specifying their
requirements for something `that actually makes sense', and `not sucking'
isn't sufficient.

``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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