ruby/ruby — pull request #422 by agrimm (2013-10-13 11:02:20+00:00)
Title: Fix spelling from compliment to complement

http://public.wsu.edu/~brians/errors/complement.html

Compliment is when you say something nice.

Complement is when what you have matches something else.

https://en.wikipedia.org/wiki/Two's_complement indicates that it's spelt "complement".