Problem

Solution

See Octopress issue #413 for details.

Method 1 (@ DrayChou)

1
2

set LC_ALL=en_US.UTF-8
set LANG=en_US.UTF-8

I’ve only tested the above two commands in the command prompt, and I’ve never touched setup_environment.bat.

Method 2 (@ robatron)

I now use this method.¹ It’s much simpler than the above one—just add/set encoding: UTF-8 in _config.yml.