Homebrew/homebrew — pull request #32368 by bukzor (2014-09-17 19:42:50+00:00)
Title: add a --ucs4 option for python builds

This was necessary for me to run my tests that deal with emoji.

FWIW Macports has a ucs4 "variant":
https://trac.macports.org/browser/trunk/dports/lang/python27/Portfile#L148