1) Comments:

my $count = ($line =~ s/[#] .*? \n//xms);
$total += $count;

[download]

2) Strings:

$line =~ s/["'] [^'"\n] ['"]//gxms

[download]

3) use statements:

$count = ($line =~ s/use [^;]+ ;//gxms);
$total += $count;

[download]

4) Here docs:

my $count = ($all_text =~ s/<<(\w+) .*? \1//gxms); 
$total += $count;

[download]

5) __DATA__, __END__:

$total++ if $all_text =~ s/(__DATA__|__END__) .*//xms;

[download]
Although, I would argue that if __DATA__ or __END__ appear anywhere in the text, then you couldn't go wrong by delcaring then and there that the text has perl code in it.

In reply to Re^3: heuristic to detect (perl) code by 7stud
in thread heuristic to detect (perl) code by LanX

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