[zpallin]

The original bar set by Doug Mcllroy was:

> ... [a] more practical, much faster to implement, debug and modify solution of the problem takes only six lines of shell script by reusing standard Unix utilities.

Unlike tr, sort, uniq, awk and tr, perl is not a standard Unix utility. Not only that, but Text::LevenshteinXS is a plugin that must be downloaded.

It's still far more convenient than Knuth's work, and it follows Spinellis' reasoning about the Unix mindset, but Spinellis' Levenshtein example doesn't actually support Mcllroy's original argument.