# Copyright 1998 M-J. Dominus. (mjd-perl-diff@plover.com)
# This program is free software; you can redistribute it and/or modify it
# under the same terms as Perl itself.
use Algorithm
::Diff
qw(diff);
bag
("Usage: $0 oldfile newfile") unless @ARGV == 2;
my ($file1, $file2) = @ARGV;
# -f $file1 or bag("$file1: not a regular file");
# -f $file2 or bag("$file2: not a regular file");
-T
$file1 or bag
("$file1: binary");
-T
$file2 or bag
("$file2: binary");
open (F1
, $file1) or bag
("Couldn't open $file1: $!");
open (F2
, $file2) or bag
("Couldn't open $file2: $!");
$diffs = diff
(\
@f1, \
@f2);
foreach $chunk (@
$diffs) {
foreach $line (@
$chunk) {
my ($sign, $lineno, $text) = @
$line;
printf "%4d$sign %s\n", $lineno+1, $text;