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Re: Continue behavior in devel branch


From: Chet Ramey
Subject: Re: Continue behavior in devel branch
Date: Sat, 10 Oct 2015 12:51:39 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

On 10/10/15 9:36 AM, Carlos Pita wrote:
> Hi Chet,
> 
> consider the following program:
> 
> yyy() {
>   continue
> }
> 
> xxx() {
>   while true; do
>     echo x
>     yyy
>     echo y
>     break
>   done
> }
> 
> xxx
> 
> In the bash devel branch it will ignore the continue and echo
> 
> x
> y

The change was made intentionally.  Historical versions of sh ignore (or
more precisely reset) the loop state when entering a shell function, so
the continue doesn't have any effect.  Posix doesn't say anything specific
about it, but it doesn't call out a change from the historical behavior,
so it came up reported as a bug.

The discussion about the change took place on the dash mailing list,
but the gmane.org archives are down right now so I can't give you a URL.

Chet
-- 
``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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