In article <[EMAIL PROTECTED]>,
Phil Carmody <[EMAIL PROTECTED]> writes:
> This is a real world task which can be solved in a couple of lines.
> Which makes me think that you guys can do it in about half a line!
>
> The simple version of the task is to verify that each line of a file is the
> insertion of one character somewhere (maybe at the start or the end) into the
> prior line.
>
> So
> <<<
> 1
> 12
> 132
> x132
>>>>
> would be accepted, but
> <<<
> 1
> 12
> 132
> alien132
>>>>
> would not be accepted.
Regex is always nice:
-p0 $_ x=/^((.*)(.*)
(?=\2.\3
|$))*$/
