Re: Shell substitution with quotes in bash-4.1

[Chet Ramey]

On 2/26/15 8:20 AM, Corentin Peuvrel wrote:
> Hello,
> 
> I found a bug in bash-4.1 (CentOS 6) that was fixed (at least) in bash-4.3
> (Fedora 21).
> 
> $ foo=aXb ; echo "$BASH_VERSION : ${foo/X/\'}"
> 4.3.33(1)-release : a'b
> 
> $ foo=aXb ; echo "$BASH_VERSION : ${foo/X/\'}"
> 4.1.2(1)-release : a\'b
> 
> The shell substitution add the backslash before the quote, but it shouldn't
> (and ${foo/X/'} fail because it wait for an ending quote).
> 
> I was wondering if it was possible to backport a fix in 4.1 ?

No.  The changes were pretty extensive, and I don't have the time
it would take to port them two versions back.

You can read the rationale for the changes in all its glory at

http://austingroupbugs.net/view.php?id=221

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/