my $str = q{this is "a test} 
    . qq{\n} 
    . q{this is "only a "poor "test}; 
print $str; 
print qq{=====}; 
$str =~ s/"[^"]+"//gs; 
print $str;

##</code><code>##

this is "a test
this is "only a "poor "test
=====
this is only a test