local $_ = 'foo';
say 'Start' if /\G foo/gcx;
say 'Mid' if /\G .*/gcx;
say 'End' if /\G \z/gcx;
####
Start
Mid
####
say 'Mid' if /\G .+/gcx;
####
Start
Mid
End
####
perl -E 'local $_ = "foo\n"; say "Start" if /\G foo/gcx; say "Mid" if /\G .*/gcx; say "End" if /\G (?=\n)/gcx'