Re: [[ ... =~ ... ]] is broken when RHS is quoted

[Chet Ramey]

Alexis Huxley wrote:

> Bash Version: 3.2
> Patch Level: 39
> Release Status: release
>
> Description:
>         [[ ... =~ ... ]] is broken when RHS is quoted

The behavior changed, intentionally, between bash-3.1 and bash-3.2.

>         #  As described by OP, =~ has stopped working:
>         lasagne$ bash -c '[[ "apple" =~ "^(apple)" ]]; echo ${BASH_REMATCH[1]}'
>                 <--- no output!

And this is how.  Quoting any part of the rhs forces it to be matched
as a string.

Patch 39, which you appear to have applied, introduces a `compat31' shell
option which you may enable to restore the bash-3.1 behavior.

Chet

--
``The lyf so short, the craft so long to lerne.'' - Chaucer

Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/