Re: pie multiline replace

Rob Dixon wrote:
> If you think the one-liner is non-trivial then all the more reason that you
> should use a proper script. It is a bad idea to use any code unless you
> understand why and how it works.

The script isn't trivial (to me) either. Incidentally the same can be done in 
sed one-liner.
sed -i -e 'N;s/aa\nbb/aa\ncc\nbb/g' foo.txt

I was not sure if perl had the same multi-line mode however neither m or s 
switch is effective in pie mode, (I'm happy to know if it can be done).

regard,