rust-lang/rfcs — pull request #526 by alexcrichton (2014-12-15 15:59:57+00:00)
Title: RFC: Statically enforce Unicode in std::fmt

Statically enforce that the `std::fmt` module can only create valid UTF-8 data
by removing the arbitrary `write` method in favor of a `write_str` method.

[Rendered](https://github.com/alexcrichton/rfcs/blob/fmt-text-writer/text/0000-fmt-text-writer.md)