I actually did read perlsyn. I even go back and browse it periodically for fun. I have even written code that had no purpose other than to play with features that I found there. (For instance a program that was designed as a finite state machine, switching states with "goto &foo;".) I sincerely missed this particular point. Actually I remember seeing it, and not seeing why it would be useful, then forgetting it again.

That said, unless I am missing something obvious, I find the above feature to be buggy for perl 5.005_03 on both Windows and Linux. Here is my test: 

$ perl
$str = <<FOO;
# line 1 "foo"
sub bar {
    die('gotcha');
}
&bar();
FOO

print "When executed by eval:\n";
eval($str);
print $@;

print "When executed by perl:\n";
open (PERL, "| perl") or die "Cannot start perl: $!";
print PERL $str;
close PERL;
__END__
When executed by eval:
gotcha at (eval 1) line 3.
When executed by perl:
gotcha at foo line 2.

[download]
When I go home tonight I will try this on 5.6 and send a bug report in if I still cannot get it to work.

For the record, I consider myself a Perl hacker, not a perl hacker. (VBG)

In reply to RE: RE: RE: RE: RE: RE: Re: How to tell eval where the code is from by tilly
in thread How to tell eval where the code is from by Yaakov

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