If dws's suggestion of warn w/o trailing "\n" isn't good enough, you might want to look into using caller to get more control: 

my $Debugging= ...;
sub Trace {
    return   if  ! $Debugging;
    my( $file, $line )= ( caller )[1,2];
    warn @_, " at $file:$line\n";
}
#...
Trace("stupid debug message");

[download]

                - tye

In reply to Re: __FILE__ and __LINE__ for Perl? (caller) by tye
in thread __FILE__ and __LINE__ for Perl? by Plankton

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