Really thanks for you further assistance

but i used what you have said "paragraph mode" but there is also still a 2 blank lines between the zone assume that i have deleted a zone in the middle of 2 zones
the out is still just like that

zone "foo.com" {
type xxxxx
path xxxxx
info xxxxx
};

zone "blah.com" {
type xxxxx
path xxxxx
info xxxxx
};

zone "bar.com" {
type xxxxx
path xxxxx
info xxxxx
};
[download]

after running zonedel.pl with your new optimization

zone "foo.com" {
type xxxxx
path xxxxx
info xxxxx
};
#2 blanks still created 
#
zone "bar.com" {
type xxxxx
path xxxxx
info xxxxx
};
[download]

i have read perlrun and i didnot find any switch that i can enable to eliminate the the blank lines created
what do you think about providing a line that makes a shifted up move after delete zone
or after deletion do

s/\n//;
[download]

to eliminate the created blank line so i will always have a one blank line between the two zones
and thanks again for your further support