/usr/share/doc/libparse-recdescent-perl/examples/demo.pl is in libparse-recdescent-perl 1.967013+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #! /usr/bin/perl -w
package Foo;
use base Parse::RecDescent;
sub print_cat {
print "Found ", @_[1..$#_], "\n";
}
package main;
$parse = new Parse::RecDescent(<<'EOG');
input : "cat"
{ $thisparser->print_cat($item[1]); }
| "dog"
{ $thisparser->print_cat($item[1]); }
EOG
$parse = bless $parse, "Foo";
$parse->input("cat");
$parse->input("doggone");
|