Re: pattern substitution expands "~" even in quoted variables

[Chet Ramey]

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On 3/9/14, 3:16 AM, Mike Frysinger wrote:
> On Fri 07 Mar 2014 16:15:05 Eduardo A. Bustamante López wrote:
>> dualbus@debian:~$ for shell in /bin/bash ~/local/bin/bash; do "$shell" -c
>> 'p=foo_bar; echo "${p/_/\~} $BASH_VERSION"'; done
>> foo\~bar 4.2.37(1)-release
>> foo~bar 4.3.0(2)-release
> 
> you can get same behavior in <=bash-4.2 and >=bash-4.3 by using single quotes:
>       P="foo_bar"
>       MY_P=${P/_/'~'}
>       echo "${MY_P}"

Yes, only the behavior when in double quotes changed.

- -- 
``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/
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