=pod =for advent_year 2010 =for advent_day 24 =for advent_title 'Twas the night before diffmas =for advent_author Jerrad Pierce Although the venerable C command handles code quite nicely, it is terrible at comparing natural language documents. Consequently there have been numerous attempts to solve this problem over the years. One, that does a rather good job is M. With it you can create an interactive web page of a two document diff as simply as: =begin pre % tdiff old.txt new.txt > delta.html =end pre And thus we can see that there are more differences between the original and modern versions of the famous Christmas A. Unfortunately, this particular test case reveals a A. =cut