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Re: [bash4.2] ${v//[/} bug?


From: Dennis Williamson
Subject: Re: [bash4.2] ${v//[/} bug?
Date: Tue, 15 Feb 2011 21:54:57 -0600

On Tue, Feb 15, 2011 at 9:16 PM, Clark J. Wang <address@hidden> wrote:
> On Wed, Feb 16, 2011 at 9:59 AM, Chet Ramey <address@hidden> wrote:
>
>> On 2/15/11 6:18 AM, Clark J. Wang wrote:
>> > For following script:
>> >
>> > var='[hello'
>> > echo "${var//[/}"
>> >
>> > With bash 4.1 it outputs hello but with 4.2 it outputs [hello . And bash
>> 4.2
>> > with compat41 on still outputs [hello . Bug? Or Bug fixed?
>>
>> It's a bug, and I will release a patch.  In the meantime, see if the
>> attached patch does the right thing on your platform.
>>
>> The patch fixed this simple example but it does not work for more
> complicated scenario:
>
> bash# cat foo.sh
> var='[hello'
> echo "${var//[/}"
>
> red='\[\e[0;31m\]'
> echo "${red//\\[\\e/}"
> bash# /usr/local/bash-4.1.9/bin/bash foo.sh
> hello
> [0;31m\]
> bash# /usr/local/bash-4.2.0/bin/bash foo.sh
> [hello
> \[\e[0;31m\]
> bash# /usr/local/bash-4.2.0-fix/bin/bash foo.sh
> hello
> \[\e[0;31m\]
> bash#
>
> 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/
>>
>
>
>
> --
> Clark
>

Also, 4.0.33 and 3.2.0 pass, 2.05b and 4.2.0 fail.



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