$ LANG=es_ES.UTF-8 python -m bpython.cli
Traceback (most recent call last):
  File "/usr/lib/python2.6/runpy.py", line 122, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.6/runpy.py", line 34, in _run_code
    exec code in run_globals
  File "/home/sebastian/development/bpython/bpython/cli.py", line 1858, in <module>
    main()
  File "bpython/cli.py", line 1844, in main
    banner=banner)
  File "bpython/cli.py", line 1743, in curses_wrapper
    return func(stdscr, *args, **kwargs)
  File "bpython/cli.py", line 1787, in main_curses
    main_win, statusbar = init_wins(scr, config)
  File "bpython/cli.py", line 1610, in init_wins
    get_colpair(config, 'main'))
  File "bpython/cli.py", line 1477, in __init__
    self.settext(s, c)
  File "bpython/cli.py", line 1576, in settext
    self.win.addstr(s, self.c)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xf3' in position 71: ordinal not in range(128)