mozilla/rust — pull request #5957 by huonw (2013-04-19 12:35:29+00:00)
Title: libcore: clarify documentation for char_at(_reverse)

The documentation was unclear/wrong: it implies the functions operated on unicode char indices, but they actually operate on byte indices. Also, the `char_at_reverse` documentation was unclear whether it counted from the beginning or the end (causing #5956).