Re: grep --perl-regexp and empty match

[Jori Mantysalo]

On Fri, 4 Jul 2003, Stepan Kasal wrote:

> To the original problem:
> the bug is that grep -o doesn't print empty matches.  If it were fixed, then
>
>       echo abc | grep -o 'X*'
>
> would output four empty lines.

But why grep prints nothing after it at once see empty match? See:
 echo 'abbbbc abbbc ac abbc abc' | grep -o -P '(?<=a)b*(?=c)'

-- 
Jori Mäntysalo