Fix bug #132 by assuming ascii when getpreferredencoding() returns an empty string. This is better than breaking always.
Fix bug #132 by assuming ascii when getpreferredencoding() returns an empty string. This is better than breaking always.

aktorion/bpython,kdart/bpython,wevial/bpython,wevial/bpython,kdart/bpython,aktorion/bpython