[Feature] $0 contains the last record in the END block [POSIX awk] yes? [GNU awk 3.1.6] yes [Busybox awk 1.11.3] yes [mawk 1.3.3] yes [nawk (solaris 2.8)] no no [tawk x.xx] unknown yes [NetBSD? awk 20030729] no [jawk 1.02] 
no