I think this might do what you want.

use strict;
use warnings;

use Test::More tests => 1;

my $want = <<'EOT';
if(/ok .*$/) {
if(m/a good match/( {
$string =~ s/[a-f]//g; # but print this line
( $string ) = ( $string =~ /(show this)/));
/but show\/this, too/
EOT

my $have = '';

while (<DATA>) {
    $have .= $_ if m~^(?!#)[^/]*/[^/]+(\\/|/(?!\w+/?))~;
}

is $have, $want;

__DATA__

#!/usr/bin/perl
foo
bar
foo/bar
/src/bin/oops/otehnoes
if(/ok .*$/) {
    print "not OK\n";
}
# skip a comment
if(m/a good match/( {
    print "not ok\n";
}

# do not /print/ this line either
$string =~ s/[a-f]//g; # but print this line
( $string ) = ( $string =~ /(show this)/));
/but show\/this, too/
my $butdontprintthis = "/var/cache/dictionaries-common";

[download]

In reply to Re: Regex AND NOT with zero-width negative lookahead assertion by hippo
in thread Regex AND NOT with zero-width negative lookahead assertion by mldvx4

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