Am 17.10.2012 03:13, schrieb Clark WANG:
> On Wed, Oct 17, 2012 at 5:18 AM, <car...@taltos.org> wrote:
>
>> Bash Version: 4.2
>> Patch Level: 37
>>
>> Description:
>>
>> bash -c 're=".*([0-9])"; if [[ "foo1" =~ ".*([0-9])" ]]; then echo
>> ${BASH_REMATCH[0]}; elif [[ "bar2" =~ $re ]]; then echo ${BASH_REMATCH[0]};
>> fi'
>>
>> This should output foo1. It instead outputs bar2, as the first match fails.
>>
>>
>> From bash's man page:
> [[ expression ]]
> ... ...
> An additional binary operator, =~, is available, with the
> same
> ... ...
> alphabetic characters. Any part of the pattern may be quoted
> to
> force it to be matched as a string. Substrings matched
> by
> ... ...
Drop the quotes on the regex
bash -c 're=".*([0-9])"; if [[ "foo1" =~ .*([0-9]) ]]; then echo
${BASH_REMATCH[0]}; elif [[ "bar2" =~ $re ]]; then echo ${BASH_REMATCH[0]};
fi'
outputs foo1
