A wrapper around aspell for finding spelling mistakes using a dictionary and a whitelist

spell.rb

# -*- coding: utf-8 -*-
#
# Usage spell.rb <files...>

require 'open3'

found_words = ARGV.map { |path| IO.read(path).scan(/[A-Z]?[a-z]+/) }
whitelist = IO.read('.dictionary').split
stdout, _ = Open3.capture2('aspell -l en_US list', stdin_data: found_words)
misspelled_according_to_aspell = stdout.split.uniq.sort
unrecognized_words = misspelled_according_to_aspell - whitelist
puts unrecognized_words.sort