i'm trying to use variables in #line directives so that i can pass the proper line/file on. essentially, i've written a wrapper to Test::More, and instead of seeing which line/file the tests fail on, it displays the line in my wrapper library.

short version of what i'm trying:
test.pl 
#!/usr/bin/perl -w

use strict;
use warnings;

use lib '.';
use test;

my $l = 200;
my $ld = 'foo';

#line $l $ld ;
test::test();

exit;

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test.pm 
package test;
use strict;
use warnings;

require Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw();

sub test {    
    my @caller = caller();
    
    print "@caller\n";
    
    print "DBGZ" if 0;
    
}

1;

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i'm seeing: 
$ perl test.pl
main test.pl 13

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i want to see: 
$ perl test.pl
main foo 200

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the llama book says: Technically, it matches the pattern /^#\s*line\s+(\d+)\s*(?:\s"(^"+)")?\s*$/, with $1 providing the line number for the next line, and $2 providing the optional filename specified within quotes. (A null filename leaves __FILE__ unchanged.)

making me think this is not possible, but then i see AutoSplit.pm: 

#line $lineno "$filename (autosplit into $path)"

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can anyone point me in the right direction to allow variables in #line directives? or at least confirm that it is not possible..

In reply to variable based #line directives? by chorankates

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