PCRE version 8.11 2010-12-10
/a(*:any name)/K
Failed: (*VERB) not recognized at offset 7
"MARK" verb don't allow to use in "NAME" parameter national symbols,
spaces, CRs, LFs and may be many other symbols.
Original Perl allows it.
It seems that in Perl "NAME" may be any sequence until close round bracket
occurs.