Re: [OT] help understanding a PCRE expression (CORRECTION)

[Markus Schönhaber]

21.02.25, 18:12 +0100, Mike Wright:
> Reading an article about a fedora kernel vulnerability regression and 
> found this PCRE expression
>
> '(<= )\w+'  <--- mistake
>
> '(?<= )\w+' <--- actual expression
>
> I got the "one or more words" part but what is the meaning of the part 
> inside the parens?

In the man page for pcrepattern(3) search for "Lookbehind assertions".